--- /dev/null
+/*
+ * Copyright © 2006-2007 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Eric Anholt <eric@anholt.net>
+ */
+
+#include <linux/dmi.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/vgaarb.h>
+#include <drm/drm_edid.h>
+#include <drm/drmP.h>
+#include "intel_drv.h"
+#include <drm/i915_drm.h>
+#include "i915_drv.h"
+#include "i915_trace.h"
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_dp_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_rect.h>
+#include <linux/dma_remapping.h>
+
+/* Primary plane formats supported by all gen */
+#define COMMON_PRIMARY_FORMATS \
+ DRM_FORMAT_C8, \
+ DRM_FORMAT_RGB565, \
+ DRM_FORMAT_XRGB8888, \
+ DRM_FORMAT_ARGB8888
+
+/* Primary plane formats for gen <= 3 */
+static const uint32_t intel_primary_formats_gen2[] = {
+ COMMON_PRIMARY_FORMATS,
+ DRM_FORMAT_XRGB1555,
+ DRM_FORMAT_ARGB1555,
+};
+
+/* Primary plane formats for gen >= 4 */
+static const uint32_t intel_primary_formats_gen4[] = {
+ COMMON_PRIMARY_FORMATS, \
+ DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_ABGR8888,
+ DRM_FORMAT_XRGB2101010,
+ DRM_FORMAT_ARGB2101010,
+ DRM_FORMAT_XBGR2101010,
+ DRM_FORMAT_ABGR2101010,
+};
+
+/* Cursor formats */
+static const uint32_t intel_cursor_formats[] = {
+ DRM_FORMAT_ARGB8888,
+};
+
+static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
+
+static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config);
+static void ironlake_pch_clock_get(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config);
+
+static int intel_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
+ int x, int y, struct drm_framebuffer *old_fb,
+ struct drm_atomic_state *state);
+static int intel_framebuffer_init(struct drm_device *dev,
+ struct intel_framebuffer *ifb,
+ struct drm_mode_fb_cmd2 *mode_cmd,
+ struct drm_i915_gem_object *obj);
+static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
+static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
+static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
+ struct intel_link_m_n *m_n,
+ struct intel_link_m_n *m2_n2);
+static void ironlake_set_pipeconf(struct drm_crtc *crtc);
+static void haswell_set_pipeconf(struct drm_crtc *crtc);
+static void intel_set_pipe_csc(struct drm_crtc *crtc);
+static void vlv_prepare_pll(struct intel_crtc *crtc,
+ const struct intel_crtc_state *pipe_config);
+static void chv_prepare_pll(struct intel_crtc *crtc,
+ const struct intel_crtc_state *pipe_config);
+static void intel_begin_crtc_commit(struct drm_crtc *crtc);
+static void intel_finish_crtc_commit(struct drm_crtc *crtc);
+
+static struct intel_encoder *intel_find_encoder(struct intel_connector *connector, int pipe)
+{
+ if (!connector->mst_port)
+ return connector->encoder;
+ else
+ return &connector->mst_port->mst_encoders[pipe]->base;
+}
+
+typedef struct {
+ int min, max;
+} intel_range_t;
+
+typedef struct {
+ int dot_limit;
+ int p2_slow, p2_fast;
+} intel_p2_t;
+
+typedef struct intel_limit intel_limit_t;
+struct intel_limit {
+ intel_range_t dot, vco, n, m, m1, m2, p, p1;
+ intel_p2_t p2;
+};
+
+int
+intel_pch_rawclk(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ WARN_ON(!HAS_PCH_SPLIT(dev));
+
+ return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
+}
+
+static inline u32 /* units of 100MHz */
+intel_fdi_link_freq(struct drm_device *dev)
+{
+ if (IS_GEN5(dev)) {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
+ } else
+ return 27;
+}
+
+static const intel_limit_t intel_limits_i8xx_dac = {
+ .dot = { .min = 25000, .max = 350000 },
+ .vco = { .min = 908000, .max = 1512000 },
+ .n = { .min = 2, .max = 16 },
+ .m = { .min = 96, .max = 140 },
+ .m1 = { .min = 18, .max = 26 },
+ .m2 = { .min = 6, .max = 16 },
+ .p = { .min = 4, .max = 128 },
+ .p1 = { .min = 2, .max = 33 },
+ .p2 = { .dot_limit = 165000,
+ .p2_slow = 4, .p2_fast = 2 },
+};
+
+static const intel_limit_t intel_limits_i8xx_dvo = {
+ .dot = { .min = 25000, .max = 350000 },
+ .vco = { .min = 908000, .max = 1512000 },
+ .n = { .min = 2, .max = 16 },
+ .m = { .min = 96, .max = 140 },
+ .m1 = { .min = 18, .max = 26 },
+ .m2 = { .min = 6, .max = 16 },
+ .p = { .min = 4, .max = 128 },
+ .p1 = { .min = 2, .max = 33 },
+ .p2 = { .dot_limit = 165000,
+ .p2_slow = 4, .p2_fast = 4 },
+};
+
+static const intel_limit_t intel_limits_i8xx_lvds = {
+ .dot = { .min = 25000, .max = 350000 },
+ .vco = { .min = 908000, .max = 1512000 },
+ .n = { .min = 2, .max = 16 },
+ .m = { .min = 96, .max = 140 },
+ .m1 = { .min = 18, .max = 26 },
+ .m2 = { .min = 6, .max = 16 },
+ .p = { .min = 4, .max = 128 },
+ .p1 = { .min = 1, .max = 6 },
+ .p2 = { .dot_limit = 165000,
+ .p2_slow = 14, .p2_fast = 7 },
+};
+
+static const intel_limit_t intel_limits_i9xx_sdvo = {
+ .dot = { .min = 20000, .max = 400000 },
+ .vco = { .min = 1400000, .max = 2800000 },
+ .n = { .min = 1, .max = 6 },
+ .m = { .min = 70, .max = 120 },
+ .m1 = { .min = 8, .max = 18 },
+ .m2 = { .min = 3, .max = 7 },
+ .p = { .min = 5, .max = 80 },
+ .p1 = { .min = 1, .max = 8 },
+ .p2 = { .dot_limit = 200000,
+ .p2_slow = 10, .p2_fast = 5 },
+};
+
+static const intel_limit_t intel_limits_i9xx_lvds = {
+ .dot = { .min = 20000, .max = 400000 },
+ .vco = { .min = 1400000, .max = 2800000 },
+ .n = { .min = 1, .max = 6 },
+ .m = { .min = 70, .max = 120 },
+ .m1 = { .min = 8, .max = 18 },
+ .m2 = { .min = 3, .max = 7 },
+ .p = { .min = 7, .max = 98 },
+ .p1 = { .min = 1, .max = 8 },
+ .p2 = { .dot_limit = 112000,
+ .p2_slow = 14, .p2_fast = 7 },
+};
+
+
+static const intel_limit_t intel_limits_g4x_sdvo = {
+ .dot = { .min = 25000, .max = 270000 },
+ .vco = { .min = 1750000, .max = 3500000},
+ .n = { .min = 1, .max = 4 },
+ .m = { .min = 104, .max = 138 },
+ .m1 = { .min = 17, .max = 23 },
+ .m2 = { .min = 5, .max = 11 },
+ .p = { .min = 10, .max = 30 },
+ .p1 = { .min = 1, .max = 3},
+ .p2 = { .dot_limit = 270000,
+ .p2_slow = 10,
+ .p2_fast = 10
+ },
+};
+
+static const intel_limit_t intel_limits_g4x_hdmi = {
+ .dot = { .min = 22000, .max = 400000 },
+ .vco = { .min = 1750000, .max = 3500000},
+ .n = { .min = 1, .max = 4 },
+ .m = { .min = 104, .max = 138 },
+ .m1 = { .min = 16, .max = 23 },
+ .m2 = { .min = 5, .max = 11 },
+ .p = { .min = 5, .max = 80 },
+ .p1 = { .min = 1, .max = 8},
+ .p2 = { .dot_limit = 165000,
+ .p2_slow = 10, .p2_fast = 5 },
+};
+
+static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
+ .dot = { .min = 20000, .max = 115000 },
+ .vco = { .min = 1750000, .max = 3500000 },
+ .n = { .min = 1, .max = 3 },
+ .m = { .min = 104, .max = 138 },
+ .m1 = { .min = 17, .max = 23 },
+ .m2 = { .min = 5, .max = 11 },
+ .p = { .min = 28, .max = 112 },
+ .p1 = { .min = 2, .max = 8 },
+ .p2 = { .dot_limit = 0,
+ .p2_slow = 14, .p2_fast = 14
+ },
+};
+
+static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
+ .dot = { .min = 80000, .max = 224000 },
+ .vco = { .min = 1750000, .max = 3500000 },
+ .n = { .min = 1, .max = 3 },
+ .m = { .min = 104, .max = 138 },
+ .m1 = { .min = 17, .max = 23 },
+ .m2 = { .min = 5, .max = 11 },
+ .p = { .min = 14, .max = 42 },
+ .p1 = { .min = 2, .max = 6 },
+ .p2 = { .dot_limit = 0,
+ .p2_slow = 7, .p2_fast = 7
+ },
+};
+
+static const intel_limit_t intel_limits_pineview_sdvo = {
+ .dot = { .min = 20000, .max = 400000},
+ .vco = { .min = 1700000, .max = 3500000 },
+ /* Pineview's Ncounter is a ring counter */
+ .n = { .min = 3, .max = 6 },
+ .m = { .min = 2, .max = 256 },
+ /* Pineview only has one combined m divider, which we treat as m2. */
+ .m1 = { .min = 0, .max = 0 },
+ .m2 = { .min = 0, .max = 254 },
+ .p = { .min = 5, .max = 80 },
+ .p1 = { .min = 1, .max = 8 },
+ .p2 = { .dot_limit = 200000,
+ .p2_slow = 10, .p2_fast = 5 },
+};
+
+static const intel_limit_t intel_limits_pineview_lvds = {
+ .dot = { .min = 20000, .max = 400000 },
+ .vco = { .min = 1700000, .max = 3500000 },
+ .n = { .min = 3, .max = 6 },
+ .m = { .min = 2, .max = 256 },
+ .m1 = { .min = 0, .max = 0 },
+ .m2 = { .min = 0, .max = 254 },
+ .p = { .min = 7, .max = 112 },
+ .p1 = { .min = 1, .max = 8 },
+ .p2 = { .dot_limit = 112000,
+ .p2_slow = 14, .p2_fast = 14 },
+};
+
+/* Ironlake / Sandybridge
+ *
+ * We calculate clock using (register_value + 2) for N/M1/M2, so here
+ * the range value for them is (actual_value - 2).
+ */
+static const intel_limit_t intel_limits_ironlake_dac = {
+ .dot = { .min = 25000, .max = 350000 },
+ .vco = { .min = 1760000, .max = 3510000 },
+ .n = { .min = 1, .max = 5 },
+ .m = { .min = 79, .max = 127 },
+ .m1 = { .min = 12, .max = 22 },
+ .m2 = { .min = 5, .max = 9 },
+ .p = { .min = 5, .max = 80 },
+ .p1 = { .min = 1, .max = 8 },
+ .p2 = { .dot_limit = 225000,
+ .p2_slow = 10, .p2_fast = 5 },
+};
+
+static const intel_limit_t intel_limits_ironlake_single_lvds = {
+ .dot = { .min = 25000, .max = 350000 },
+ .vco = { .min = 1760000, .max = 3510000 },
+ .n = { .min = 1, .max = 3 },
+ .m = { .min = 79, .max = 118 },
+ .m1 = { .min = 12, .max = 22 },
+ .m2 = { .min = 5, .max = 9 },
+ .p = { .min = 28, .max = 112 },
+ .p1 = { .min = 2, .max = 8 },
+ .p2 = { .dot_limit = 225000,
+ .p2_slow = 14, .p2_fast = 14 },
+};
+
+static const intel_limit_t intel_limits_ironlake_dual_lvds = {
+ .dot = { .min = 25000, .max = 350000 },
+ .vco = { .min = 1760000, .max = 3510000 },
+ .n = { .min = 1, .max = 3 },
+ .m = { .min = 79, .max = 127 },
+ .m1 = { .min = 12, .max = 22 },
+ .m2 = { .min = 5, .max = 9 },
+ .p = { .min = 14, .max = 56 },
+ .p1 = { .min = 2, .max = 8 },
+ .p2 = { .dot_limit = 225000,
+ .p2_slow = 7, .p2_fast = 7 },
+};
+
+/* LVDS 100mhz refclk limits. */
+static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
+ .dot = { .min = 25000, .max = 350000 },
+ .vco = { .min = 1760000, .max = 3510000 },
+ .n = { .min = 1, .max = 2 },
+ .m = { .min = 79, .max = 126 },
+ .m1 = { .min = 12, .max = 22 },
+ .m2 = { .min = 5, .max = 9 },
+ .p = { .min = 28, .max = 112 },
+ .p1 = { .min = 2, .max = 8 },
+ .p2 = { .dot_limit = 225000,
+ .p2_slow = 14, .p2_fast = 14 },
+};
+
+static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
+ .dot = { .min = 25000, .max = 350000 },
+ .vco = { .min = 1760000, .max = 3510000 },
+ .n = { .min = 1, .max = 3 },
+ .m = { .min = 79, .max = 126 },
+ .m1 = { .min = 12, .max = 22 },
+ .m2 = { .min = 5, .max = 9 },
+ .p = { .min = 14, .max = 42 },
+ .p1 = { .min = 2, .max = 6 },
+ .p2 = { .dot_limit = 225000,
+ .p2_slow = 7, .p2_fast = 7 },
+};
+
+static const intel_limit_t intel_limits_vlv = {
+ /*
+ * These are the data rate limits (measured in fast clocks)
+ * since those are the strictest limits we have. The fast
+ * clock and actual rate limits are more relaxed, so checking
+ * them would make no difference.
+ */
+ .dot = { .min = 25000 * 5, .max = 270000 * 5 },
+ .vco = { .min = 4000000, .max = 6000000 },
+ .n = { .min = 1, .max = 7 },
+ .m1 = { .min = 2, .max = 3 },
+ .m2 = { .min = 11, .max = 156 },
+ .p1 = { .min = 2, .max = 3 },
+ .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
+};
+
+static const intel_limit_t intel_limits_chv = {
+ /*
+ * These are the data rate limits (measured in fast clocks)
+ * since those are the strictest limits we have. The fast
+ * clock and actual rate limits are more relaxed, so checking
+ * them would make no difference.
+ */
+ .dot = { .min = 25000 * 5, .max = 540000 * 5},
+ .vco = { .min = 4800000, .max = 6480000 },
+ .n = { .min = 1, .max = 1 },
+ .m1 = { .min = 2, .max = 2 },
+ .m2 = { .min = 24 << 22, .max = 175 << 22 },
+ .p1 = { .min = 2, .max = 4 },
+ .p2 = { .p2_slow = 1, .p2_fast = 14 },
+};
+
+static void vlv_clock(int refclk, intel_clock_t *clock)
+{
+ clock->m = clock->m1 * clock->m2;
+ clock->p = clock->p1 * clock->p2;
+ if (WARN_ON(clock->n == 0 || clock->p == 0))
+ return;
+ clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
+ clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+}
+
+/**
+ * Returns whether any output on the specified pipe is of the specified type
+ */
+bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct intel_encoder *encoder;
+
+ for_each_encoder_on_crtc(dev, &crtc->base, encoder)
+ if (encoder->type == type)
+ return true;
+
+ return false;
+}
+
+/**
+ * Returns whether any output on the specified pipe will have the specified
+ * type after a staged modeset is complete, i.e., the same as
+ * intel_pipe_has_type() but looking at encoder->new_crtc instead of
+ * encoder->crtc.
+ */
+static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state,
+ int type)
+{
+ struct drm_atomic_state *state = crtc_state->base.state;
+ struct drm_connector_state *connector_state;
+ struct intel_encoder *encoder;
+ int i, num_connectors = 0;
+
+ for (i = 0; i < state->num_connector; i++) {
+ if (!state->connectors[i])
+ continue;
+
+ connector_state = state->connector_states[i];
+ if (connector_state->crtc != crtc_state->base.crtc)
+ continue;
+
+ num_connectors++;
+
+ encoder = to_intel_encoder(connector_state->best_encoder);
+ if (encoder->type == type)
+ return true;
+ }
+
+ WARN_ON(num_connectors == 0);
+
+ return false;
+}
+
+static const intel_limit_t *
+intel_ironlake_limit(struct intel_crtc_state *crtc_state, int refclk)
+{
+ struct drm_device *dev = crtc_state->base.crtc->dev;
+ const intel_limit_t *limit;
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+ if (intel_is_dual_link_lvds(dev)) {
+ if (refclk == 100000)
+ limit = &intel_limits_ironlake_dual_lvds_100m;
+ else
+ limit = &intel_limits_ironlake_dual_lvds;
+ } else {
+ if (refclk == 100000)
+ limit = &intel_limits_ironlake_single_lvds_100m;
+ else
+ limit = &intel_limits_ironlake_single_lvds;
+ }
+ } else
+ limit = &intel_limits_ironlake_dac;
+
+ return limit;
+}
+
+static const intel_limit_t *
+intel_g4x_limit(struct intel_crtc_state *crtc_state)
+{
+ struct drm_device *dev = crtc_state->base.crtc->dev;
+ const intel_limit_t *limit;
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+ if (intel_is_dual_link_lvds(dev))
+ limit = &intel_limits_g4x_dual_channel_lvds;
+ else
+ limit = &intel_limits_g4x_single_channel_lvds;
+ } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI) ||
+ intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
+ limit = &intel_limits_g4x_hdmi;
+ } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO)) {
+ limit = &intel_limits_g4x_sdvo;
+ } else /* The option is for other outputs */
+ limit = &intel_limits_i9xx_sdvo;
+
+ return limit;
+}
+
+static const intel_limit_t *
+intel_limit(struct intel_crtc_state *crtc_state, int refclk)
+{
+ struct drm_device *dev = crtc_state->base.crtc->dev;
+ const intel_limit_t *limit;
+
+ if (HAS_PCH_SPLIT(dev))
+ limit = intel_ironlake_limit(crtc_state, refclk);
+ else if (IS_G4X(dev)) {
+ limit = intel_g4x_limit(crtc_state);
+ } else if (IS_PINEVIEW(dev)) {
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
+ limit = &intel_limits_pineview_lvds;
+ else
+ limit = &intel_limits_pineview_sdvo;
+ } else if (IS_CHERRYVIEW(dev)) {
+ limit = &intel_limits_chv;
+ } else if (IS_VALLEYVIEW(dev)) {
+ limit = &intel_limits_vlv;
+ } else if (!IS_GEN2(dev)) {
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
+ limit = &intel_limits_i9xx_lvds;
+ else
+ limit = &intel_limits_i9xx_sdvo;
+ } else {
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
+ limit = &intel_limits_i8xx_lvds;
+ else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
+ limit = &intel_limits_i8xx_dvo;
+ else
+ limit = &intel_limits_i8xx_dac;
+ }
+ return limit;
+}
+
+/* m1 is reserved as 0 in Pineview, n is a ring counter */
+static void pineview_clock(int refclk, intel_clock_t *clock)
+{
+ clock->m = clock->m2 + 2;
+ clock->p = clock->p1 * clock->p2;
+ if (WARN_ON(clock->n == 0 || clock->p == 0))
+ return;
+ clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
+ clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+}
+
+static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
+{
+ return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
+}
+
+static void i9xx_clock(int refclk, intel_clock_t *clock)
+{
+ clock->m = i9xx_dpll_compute_m(clock);
+ clock->p = clock->p1 * clock->p2;
+ if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
+ return;
+ clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
+ clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+}
+
+static void chv_clock(int refclk, intel_clock_t *clock)
+{
+ clock->m = clock->m1 * clock->m2;
+ clock->p = clock->p1 * clock->p2;
+ if (WARN_ON(clock->n == 0 || clock->p == 0))
+ return;
+ clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
+ clock->n << 22);
+ clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
+}
+
+#define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
+/**
+ * Returns whether the given set of divisors are valid for a given refclk with
+ * the given connectors.
+ */
+
+static bool intel_PLL_is_valid(struct drm_device *dev,
+ const intel_limit_t *limit,
+ const intel_clock_t *clock)
+{
+ if (clock->n < limit->n.min || limit->n.max < clock->n)
+ INTELPllInvalid("n out of range\n");
+ if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
+ INTELPllInvalid("p1 out of range\n");
+ if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
+ INTELPllInvalid("m2 out of range\n");
+ if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
+ INTELPllInvalid("m1 out of range\n");
+
+ if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev))
+ if (clock->m1 <= clock->m2)
+ INTELPllInvalid("m1 <= m2\n");
+
+ if (!IS_VALLEYVIEW(dev)) {
+ if (clock->p < limit->p.min || limit->p.max < clock->p)
+ INTELPllInvalid("p out of range\n");
+ if (clock->m < limit->m.min || limit->m.max < clock->m)
+ INTELPllInvalid("m out of range\n");
+ }
+
+ if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
+ INTELPllInvalid("vco out of range\n");
+ /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
+ * connector, etc., rather than just a single range.
+ */
+ if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
+ INTELPllInvalid("dot out of range\n");
+
+ return true;
+}
+
+static bool
+i9xx_find_best_dpll(const intel_limit_t *limit,
+ struct intel_crtc_state *crtc_state,
+ int target, int refclk, intel_clock_t *match_clock,
+ intel_clock_t *best_clock)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+ struct drm_device *dev = crtc->base.dev;
+ intel_clock_t clock;
+ int err = target;
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+ /*
+ * For LVDS just rely on its current settings for dual-channel.
+ * We haven't figured out how to reliably set up different
+ * single/dual channel state, if we even can.
+ */
+ if (intel_is_dual_link_lvds(dev))
+ clock.p2 = limit->p2.p2_fast;
+ else
+ clock.p2 = limit->p2.p2_slow;
+ } else {
+ if (target < limit->p2.dot_limit)
+ clock.p2 = limit->p2.p2_slow;
+ else
+ clock.p2 = limit->p2.p2_fast;
+ }
+
+ memset(best_clock, 0, sizeof(*best_clock));
+
+ for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
+ clock.m1++) {
+ for (clock.m2 = limit->m2.min;
+ clock.m2 <= limit->m2.max; clock.m2++) {
+ if (clock.m2 >= clock.m1)
+ break;
+ for (clock.n = limit->n.min;
+ clock.n <= limit->n.max; clock.n++) {
+ for (clock.p1 = limit->p1.min;
+ clock.p1 <= limit->p1.max; clock.p1++) {
+ int this_err;
+
+ i9xx_clock(refclk, &clock);
+ if (!intel_PLL_is_valid(dev, limit,
+ &clock))
+ continue;
+ if (match_clock &&
+ clock.p != match_clock->p)
+ continue;
+
+ this_err = abs(clock.dot - target);
+ if (this_err < err) {
+ *best_clock = clock;
+ err = this_err;
+ }
+ }
+ }
+ }
+ }
+
+ return (err != target);
+}
+
+static bool
+pnv_find_best_dpll(const intel_limit_t *limit,
+ struct intel_crtc_state *crtc_state,
+ int target, int refclk, intel_clock_t *match_clock,
+ intel_clock_t *best_clock)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+ struct drm_device *dev = crtc->base.dev;
+ intel_clock_t clock;
+ int err = target;
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+ /*
+ * For LVDS just rely on its current settings for dual-channel.
+ * We haven't figured out how to reliably set up different
+ * single/dual channel state, if we even can.
+ */
+ if (intel_is_dual_link_lvds(dev))
+ clock.p2 = limit->p2.p2_fast;
+ else
+ clock.p2 = limit->p2.p2_slow;
+ } else {
+ if (target < limit->p2.dot_limit)
+ clock.p2 = limit->p2.p2_slow;
+ else
+ clock.p2 = limit->p2.p2_fast;
+ }
+
+ memset(best_clock, 0, sizeof(*best_clock));
+
+ for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
+ clock.m1++) {
+ for (clock.m2 = limit->m2.min;
+ clock.m2 <= limit->m2.max; clock.m2++) {
+ for (clock.n = limit->n.min;
+ clock.n <= limit->n.max; clock.n++) {
+ for (clock.p1 = limit->p1.min;
+ clock.p1 <= limit->p1.max; clock.p1++) {
+ int this_err;
+
+ pineview_clock(refclk, &clock);
+ if (!intel_PLL_is_valid(dev, limit,
+ &clock))
+ continue;
+ if (match_clock &&
+ clock.p != match_clock->p)
+ continue;
+
+ this_err = abs(clock.dot - target);
+ if (this_err < err) {
+ *best_clock = clock;
+ err = this_err;
+ }
+ }
+ }
+ }
+ }
+
+ return (err != target);
+}
+
+static bool
+g4x_find_best_dpll(const intel_limit_t *limit,
+ struct intel_crtc_state *crtc_state,
+ int target, int refclk, intel_clock_t *match_clock,
+ intel_clock_t *best_clock)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+ struct drm_device *dev = crtc->base.dev;
+ intel_clock_t clock;
+ int max_n;
+ bool found;
+ /* approximately equals target * 0.00585 */
+ int err_most = (target >> 8) + (target >> 9);
+ found = false;
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+ if (intel_is_dual_link_lvds(dev))
+ clock.p2 = limit->p2.p2_fast;
+ else
+ clock.p2 = limit->p2.p2_slow;
+ } else {
+ if (target < limit->p2.dot_limit)
+ clock.p2 = limit->p2.p2_slow;
+ else
+ clock.p2 = limit->p2.p2_fast;
+ }
+
+ memset(best_clock, 0, sizeof(*best_clock));
+ max_n = limit->n.max;
+ /* based on hardware requirement, prefer smaller n to precision */
+ for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
+ /* based on hardware requirement, prefere larger m1,m2 */
+ for (clock.m1 = limit->m1.max;
+ clock.m1 >= limit->m1.min; clock.m1--) {
+ for (clock.m2 = limit->m2.max;
+ clock.m2 >= limit->m2.min; clock.m2--) {
+ for (clock.p1 = limit->p1.max;
+ clock.p1 >= limit->p1.min; clock.p1--) {
+ int this_err;
+
+ i9xx_clock(refclk, &clock);
+ if (!intel_PLL_is_valid(dev, limit,
+ &clock))
+ continue;
+
+ this_err = abs(clock.dot - target);
+ if (this_err < err_most) {
+ *best_clock = clock;
+ err_most = this_err;
+ max_n = clock.n;
+ found = true;
+ }
+ }
+ }
+ }
+ }
+ return found;
+}
+
+/*
+ * Check if the calculated PLL configuration is more optimal compared to the
+ * best configuration and error found so far. Return the calculated error.
+ */
+static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
+ const intel_clock_t *calculated_clock,
+ const intel_clock_t *best_clock,
+ unsigned int best_error_ppm,
+ unsigned int *error_ppm)
+{
+ /*
+ * For CHV ignore the error and consider only the P value.
+ * Prefer a bigger P value based on HW requirements.
+ */
+ if (IS_CHERRYVIEW(dev)) {
+ *error_ppm = 0;
+
+ return calculated_clock->p > best_clock->p;
+ }
+
+ if (WARN_ON_ONCE(!target_freq))
+ return false;
+
+ *error_ppm = div_u64(1000000ULL *
+ abs(target_freq - calculated_clock->dot),
+ target_freq);
+ /*
+ * Prefer a better P value over a better (smaller) error if the error
+ * is small. Ensure this preference for future configurations too by
+ * setting the error to 0.
+ */
+ if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
+ *error_ppm = 0;
+
+ return true;
+ }
+
+ return *error_ppm + 10 < best_error_ppm;
+}
+
+static bool
+vlv_find_best_dpll(const intel_limit_t *limit,
+ struct intel_crtc_state *crtc_state,
+ int target, int refclk, intel_clock_t *match_clock,
+ intel_clock_t *best_clock)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+ struct drm_device *dev = crtc->base.dev;
+ intel_clock_t clock;
+ unsigned int bestppm = 1000000;
+ /* min update 19.2 MHz */
+ int max_n = min(limit->n.max, refclk / 19200);
+ bool found = false;
+
+ target *= 5; /* fast clock */
+
+ memset(best_clock, 0, sizeof(*best_clock));
+
+ /* based on hardware requirement, prefer smaller n to precision */
+ for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
+ for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
+ for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
+ clock.p2 -= clock.p2 > 10 ? 2 : 1) {
+ clock.p = clock.p1 * clock.p2;
+ /* based on hardware requirement, prefer bigger m1,m2 values */
+ for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
+ unsigned int ppm;
+
+ clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
+ refclk * clock.m1);
+
+ vlv_clock(refclk, &clock);
+
+ if (!intel_PLL_is_valid(dev, limit,
+ &clock))
+ continue;
+
+ if (!vlv_PLL_is_optimal(dev, target,
+ &clock,
+ best_clock,
+ bestppm, &ppm))
+ continue;
+
+ *best_clock = clock;
+ bestppm = ppm;
+ found = true;
+ }
+ }
+ }
+ }
+
+ return found;
+}
+
+static bool
+chv_find_best_dpll(const intel_limit_t *limit,
+ struct intel_crtc_state *crtc_state,
+ int target, int refclk, intel_clock_t *match_clock,
+ intel_clock_t *best_clock)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+ struct drm_device *dev = crtc->base.dev;
+ unsigned int best_error_ppm;
+ intel_clock_t clock;
+ uint64_t m2;
+ int found = false;
+
+ memset(best_clock, 0, sizeof(*best_clock));
+ best_error_ppm = 1000000;
+
+ /*
+ * Based on hardware doc, the n always set to 1, and m1 always
+ * set to 2. If requires to support 200Mhz refclk, we need to
+ * revisit this because n may not 1 anymore.
+ */
+ clock.n = 1, clock.m1 = 2;
+ target *= 5; /* fast clock */
+
+ for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
+ for (clock.p2 = limit->p2.p2_fast;
+ clock.p2 >= limit->p2.p2_slow;
+ clock.p2 -= clock.p2 > 10 ? 2 : 1) {
+ unsigned int error_ppm;
+
+ clock.p = clock.p1 * clock.p2;
+
+ m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
+ clock.n) << 22, refclk * clock.m1);
+
+ if (m2 > INT_MAX/clock.m1)
+ continue;
+
+ clock.m2 = m2;
+
+ chv_clock(refclk, &clock);
+
+ if (!intel_PLL_is_valid(dev, limit, &clock))
+ continue;
+
+ if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
+ best_error_ppm, &error_ppm))
+ continue;
+
+ *best_clock = clock;
+ best_error_ppm = error_ppm;
+ found = true;
+ }
+ }
+
+ return found;
+}
+
+bool intel_crtc_active(struct drm_crtc *crtc)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ /* Be paranoid as we can arrive here with only partial
+ * state retrieved from the hardware during setup.
+ *
+ * We can ditch the adjusted_mode.crtc_clock check as soon
+ * as Haswell has gained clock readout/fastboot support.
+ *
+ * We can ditch the crtc->primary->fb check as soon as we can
+ * properly reconstruct framebuffers.
+ *
+ * FIXME: The intel_crtc->active here should be switched to
+ * crtc->state->active once we have proper CRTC states wired up
+ * for atomic.
+ */
+ return intel_crtc->active && crtc->primary->state->fb &&
+ intel_crtc->config->base.adjusted_mode.crtc_clock;
+}
+
+enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ return intel_crtc->config->cpu_transcoder;
+}
+
+static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 reg = PIPEDSL(pipe);
+ u32 line1, line2;
+ u32 line_mask;
+
+ if (IS_GEN2(dev))
+ line_mask = DSL_LINEMASK_GEN2;
+ else
+ line_mask = DSL_LINEMASK_GEN3;
+
+ line1 = I915_READ(reg) & line_mask;
+ mdelay(5);
+ line2 = I915_READ(reg) & line_mask;
+
+ return line1 == line2;
+}
+
+/*
+ * intel_wait_for_pipe_off - wait for pipe to turn off
+ * @crtc: crtc whose pipe to wait for
+ *
+ * After disabling a pipe, we can't wait for vblank in the usual way,
+ * spinning on the vblank interrupt status bit, since we won't actually
+ * see an interrupt when the pipe is disabled.
+ *
+ * On Gen4 and above:
+ * wait for the pipe register state bit to turn off
+ *
+ * Otherwise:
+ * wait for the display line value to settle (it usually
+ * ends up stopping at the start of the next frame).
+ *
+ */
+static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+ enum pipe pipe = crtc->pipe;
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ int reg = PIPECONF(cpu_transcoder);
+
+ /* Wait for the Pipe State to go off */
+ if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
+ 100))
+ WARN(1, "pipe_off wait timed out\n");
+ } else {
+ /* Wait for the display line to settle */
+ if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
+ WARN(1, "pipe_off wait timed out\n");
+ }
+}
+
+/*
+ * ibx_digital_port_connected - is the specified port connected?
+ * @dev_priv: i915 private structure
+ * @port: the port to test
+ *
+ * Returns true if @port is connected, false otherwise.
+ */
+bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
+ struct intel_digital_port *port)
+{
+ u32 bit;
+
+ if (HAS_PCH_IBX(dev_priv->dev)) {
+ switch (port->port) {
+ case PORT_B:
+ bit = SDE_PORTB_HOTPLUG;
+ break;
+ case PORT_C:
+ bit = SDE_PORTC_HOTPLUG;
+ break;
+ case PORT_D:
+ bit = SDE_PORTD_HOTPLUG;
+ break;
+ default:
+ return true;
+ }
+ } else {
+ switch (port->port) {
+ case PORT_B:
+ bit = SDE_PORTB_HOTPLUG_CPT;
+ break;
+ case PORT_C:
+ bit = SDE_PORTC_HOTPLUG_CPT;
+ break;
+ case PORT_D:
+ bit = SDE_PORTD_HOTPLUG_CPT;
+ break;
+ default:
+ return true;
+ }
+ }
+
+ return I915_READ(SDEISR) & bit;
+}
+
+static const char *state_string(bool enabled)
+{
+ return enabled ? "on" : "off";
+}
+
+/* Only for pre-ILK configs */
+void assert_pll(struct drm_i915_private *dev_priv,
+ enum pipe pipe, bool state)
+{
+ int reg;
+ u32 val;
+ bool cur_state;
+
+ reg = DPLL(pipe);
+ val = I915_READ(reg);
+ cur_state = !!(val & DPLL_VCO_ENABLE);
+ I915_STATE_WARN(cur_state != state,
+ "PLL state assertion failure (expected %s, current %s)\n",
+ state_string(state), state_string(cur_state));
+}
+
+/* XXX: the dsi pll is shared between MIPI DSI ports */
+static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
+{
+ u32 val;
+ bool cur_state;
+
+ mutex_lock(&dev_priv->dpio_lock);
+ val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
+ mutex_unlock(&dev_priv->dpio_lock);
+
+ cur_state = val & DSI_PLL_VCO_EN;
+ I915_STATE_WARN(cur_state != state,
+ "DSI PLL state assertion failure (expected %s, current %s)\n",
+ state_string(state), state_string(cur_state));
+}
+#define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
+#define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
+
+struct intel_shared_dpll *
+intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
+
+ if (crtc->config->shared_dpll < 0)
+ return NULL;
+
+ return &dev_priv->shared_dplls[crtc->config->shared_dpll];
+}
+
+/* For ILK+ */
+void assert_shared_dpll(struct drm_i915_private *dev_priv,
+ struct intel_shared_dpll *pll,
+ bool state)
+{
+ bool cur_state;
+ struct intel_dpll_hw_state hw_state;
+
+ if (WARN (!pll,
+ "asserting DPLL %s with no DPLL\n", state_string(state)))
+ return;
+
+ cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
+ I915_STATE_WARN(cur_state != state,
+ "%s assertion failure (expected %s, current %s)\n",
+ pll->name, state_string(state), state_string(cur_state));
+}
+
+static void assert_fdi_tx(struct drm_i915_private *dev_priv,
+ enum pipe pipe, bool state)
+{
+ int reg;
+ u32 val;
+ bool cur_state;
+ enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
+ pipe);
+
+ if (HAS_DDI(dev_priv->dev)) {
+ /* DDI does not have a specific FDI_TX register */
+ reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
+ val = I915_READ(reg);
+ cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
+ } else {
+ reg = FDI_TX_CTL(pipe);
+ val = I915_READ(reg);
+ cur_state = !!(val & FDI_TX_ENABLE);
+ }
+ I915_STATE_WARN(cur_state != state,
+ "FDI TX state assertion failure (expected %s, current %s)\n",
+ state_string(state), state_string(cur_state));
+}
+#define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
+#define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
+
+static void assert_fdi_rx(struct drm_i915_private *dev_priv,
+ enum pipe pipe, bool state)
+{
+ int reg;
+ u32 val;
+ bool cur_state;
+
+ reg = FDI_RX_CTL(pipe);
+ val = I915_READ(reg);
+ cur_state = !!(val & FDI_RX_ENABLE);
+ I915_STATE_WARN(cur_state != state,
+ "FDI RX state assertion failure (expected %s, current %s)\n",
+ state_string(state), state_string(cur_state));
+}
+#define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
+#define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
+
+static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ int reg;
+ u32 val;
+
+ /* ILK FDI PLL is always enabled */
+ if (INTEL_INFO(dev_priv->dev)->gen == 5)
+ return;
+
+ /* On Haswell, DDI ports are responsible for the FDI PLL setup */
+ if (HAS_DDI(dev_priv->dev))
+ return;
+
+ reg = FDI_TX_CTL(pipe);
+ val = I915_READ(reg);
+ I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
+}
+
+void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
+ enum pipe pipe, bool state)
+{
+ int reg;
+ u32 val;
+ bool cur_state;
+
+ reg = FDI_RX_CTL(pipe);
+ val = I915_READ(reg);
+ cur_state = !!(val & FDI_RX_PLL_ENABLE);
+ I915_STATE_WARN(cur_state != state,
+ "FDI RX PLL assertion failure (expected %s, current %s)\n",
+ state_string(state), state_string(cur_state));
+}
+
+void assert_panel_unlocked(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ struct drm_device *dev = dev_priv->dev;
+ int pp_reg;
+ u32 val;
+ enum pipe panel_pipe = PIPE_A;
+ bool locked = true;
+
+ if (WARN_ON(HAS_DDI(dev)))
+ return;
+
+ if (HAS_PCH_SPLIT(dev)) {
+ u32 port_sel;
+
+ pp_reg = PCH_PP_CONTROL;
+ port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK;
+
+ if (port_sel == PANEL_PORT_SELECT_LVDS &&
+ I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
+ panel_pipe = PIPE_B;
+ /* XXX: else fix for eDP */
+ } else if (IS_VALLEYVIEW(dev)) {
+ /* presumably write lock depends on pipe, not port select */
+ pp_reg = VLV_PIPE_PP_CONTROL(pipe);
+ panel_pipe = pipe;
+ } else {
+ pp_reg = PP_CONTROL;
+ if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
+ panel_pipe = PIPE_B;
+ }
+
+ val = I915_READ(pp_reg);
+ if (!(val & PANEL_POWER_ON) ||
+ ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
+ locked = false;
+
+ I915_STATE_WARN(panel_pipe == pipe && locked,
+ "panel assertion failure, pipe %c regs locked\n",
+ pipe_name(pipe));
+}
+
+static void assert_cursor(struct drm_i915_private *dev_priv,
+ enum pipe pipe, bool state)
+{
+ struct drm_device *dev = dev_priv->dev;
+ bool cur_state;
+
+ if (IS_845G(dev) || IS_I865G(dev))
+ cur_state = I915_READ(_CURACNTR) & CURSOR_ENABLE;
+ else
+ cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
+
+ I915_STATE_WARN(cur_state != state,
+ "cursor on pipe %c assertion failure (expected %s, current %s)\n",
+ pipe_name(pipe), state_string(state), state_string(cur_state));
+}
+#define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
+#define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
+
+void assert_pipe(struct drm_i915_private *dev_priv,
+ enum pipe pipe, bool state)
+{
+ int reg;
+ u32 val;
+ bool cur_state;
+ enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
+ pipe);
+
+ /* if we need the pipe quirk it must be always on */
+ if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
+ (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
+ state = true;
+
+ if (!intel_display_power_is_enabled(dev_priv,
+ POWER_DOMAIN_TRANSCODER(cpu_transcoder))) {
+ cur_state = false;
+ } else {
+ reg = PIPECONF(cpu_transcoder);
+ val = I915_READ(reg);
+ cur_state = !!(val & PIPECONF_ENABLE);
+ }
+
+ I915_STATE_WARN(cur_state != state,
+ "pipe %c assertion failure (expected %s, current %s)\n",
+ pipe_name(pipe), state_string(state), state_string(cur_state));
+}
+
+static void assert_plane(struct drm_i915_private *dev_priv,
+ enum plane plane, bool state)
+{
+ int reg;
+ u32 val;
+ bool cur_state;
+
+ reg = DSPCNTR(plane);
+ val = I915_READ(reg);
+ cur_state = !!(val & DISPLAY_PLANE_ENABLE);
+ I915_STATE_WARN(cur_state != state,
+ "plane %c assertion failure (expected %s, current %s)\n",
+ plane_name(plane), state_string(state), state_string(cur_state));
+}
+
+#define assert_plane_enabled(d, p) assert_plane(d, p, true)
+#define assert_plane_disabled(d, p) assert_plane(d, p, false)
+
+static void assert_planes_disabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ struct drm_device *dev = dev_priv->dev;
+ int reg, i;
+ u32 val;
+ int cur_pipe;
+
+ /* Primary planes are fixed to pipes on gen4+ */
+ if (INTEL_INFO(dev)->gen >= 4) {
+ reg = DSPCNTR(pipe);
+ val = I915_READ(reg);
+ I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
+ "plane %c assertion failure, should be disabled but not\n",
+ plane_name(pipe));
+ return;
+ }
+
+ /* Need to check both planes against the pipe */
+ for_each_pipe(dev_priv, i) {
+ reg = DSPCNTR(i);
+ val = I915_READ(reg);
+ cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
+ DISPPLANE_SEL_PIPE_SHIFT;
+ I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
+ "plane %c assertion failure, should be off on pipe %c but is still active\n",
+ plane_name(i), pipe_name(pipe));
+ }
+}
+
+static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ struct drm_device *dev = dev_priv->dev;
+ int reg, sprite;
+ u32 val;
+
+ if (INTEL_INFO(dev)->gen >= 9) {
+ for_each_sprite(dev_priv, pipe, sprite) {
+ val = I915_READ(PLANE_CTL(pipe, sprite));
+ I915_STATE_WARN(val & PLANE_CTL_ENABLE,
+ "plane %d assertion failure, should be off on pipe %c but is still active\n",
+ sprite, pipe_name(pipe));
+ }
+ } else if (IS_VALLEYVIEW(dev)) {
+ for_each_sprite(dev_priv, pipe, sprite) {
+ reg = SPCNTR(pipe, sprite);
+ val = I915_READ(reg);
+ I915_STATE_WARN(val & SP_ENABLE,
+ "sprite %c assertion failure, should be off on pipe %c but is still active\n",
+ sprite_name(pipe, sprite), pipe_name(pipe));
+ }
+ } else if (INTEL_INFO(dev)->gen >= 7) {
+ reg = SPRCTL(pipe);
+ val = I915_READ(reg);
+ I915_STATE_WARN(val & SPRITE_ENABLE,
+ "sprite %c assertion failure, should be off on pipe %c but is still active\n",
+ plane_name(pipe), pipe_name(pipe));
+ } else if (INTEL_INFO(dev)->gen >= 5) {
+ reg = DVSCNTR(pipe);
+ val = I915_READ(reg);
+ I915_STATE_WARN(val & DVS_ENABLE,
+ "sprite %c assertion failure, should be off on pipe %c but is still active\n",
+ plane_name(pipe), pipe_name(pipe));
+ }
+}
+
+static void assert_vblank_disabled(struct drm_crtc *crtc)
+{
+ if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
+ drm_crtc_vblank_put(crtc);
+}
+
+static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
+{
+ u32 val;
+ bool enabled;
+
+ I915_STATE_WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
+
+ val = I915_READ(PCH_DREF_CONTROL);
+ enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
+ DREF_SUPERSPREAD_SOURCE_MASK));
+ I915_STATE_WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
+}
+
+static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ int reg;
+ u32 val;
+ bool enabled;
+
+ reg = PCH_TRANSCONF(pipe);
+ val = I915_READ(reg);
+ enabled = !!(val & TRANS_ENABLE);
+ I915_STATE_WARN(enabled,
+ "transcoder assertion failed, should be off on pipe %c but is still active\n",
+ pipe_name(pipe));
+}
+
+static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, u32 port_sel, u32 val)
+{
+ if ((val & DP_PORT_EN) == 0)
+ return false;
+
+ if (HAS_PCH_CPT(dev_priv->dev)) {
+ u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
+ u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
+ if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
+ return false;
+ } else if (IS_CHERRYVIEW(dev_priv->dev)) {
+ if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
+ return false;
+ } else {
+ if ((val & DP_PIPE_MASK) != (pipe << 30))
+ return false;
+ }
+ return true;
+}
+
+static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, u32 val)
+{
+ if ((val & SDVO_ENABLE) == 0)
+ return false;
+
+ if (HAS_PCH_CPT(dev_priv->dev)) {
+ if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
+ return false;
+ } else if (IS_CHERRYVIEW(dev_priv->dev)) {
+ if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
+ return false;
+ } else {
+ if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
+ return false;
+ }
+ return true;
+}
+
+static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, u32 val)
+{
+ if ((val & LVDS_PORT_EN) == 0)
+ return false;
+
+ if (HAS_PCH_CPT(dev_priv->dev)) {
+ if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
+ return false;
+ } else {
+ if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
+ return false;
+ }
+ return true;
+}
+
+static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, u32 val)
+{
+ if ((val & ADPA_DAC_ENABLE) == 0)
+ return false;
+ if (HAS_PCH_CPT(dev_priv->dev)) {
+ if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
+ return false;
+ } else {
+ if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
+ return false;
+ }
+ return true;
+}
+
+static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, int reg, u32 port_sel)
+{
+ u32 val = I915_READ(reg);
+ I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
+ "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
+ reg, pipe_name(pipe));
+
+ I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & DP_PORT_EN) == 0
+ && (val & DP_PIPEB_SELECT),
+ "IBX PCH dp port still using transcoder B\n");
+}
+
+static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, int reg)
+{
+ u32 val = I915_READ(reg);
+ I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
+ "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
+ reg, pipe_name(pipe));
+
+ I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_ENABLE) == 0
+ && (val & SDVO_PIPE_B_SELECT),
+ "IBX PCH hdmi port still using transcoder B\n");
+}
+
+static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ int reg;
+ u32 val;
+
+ assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
+ assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
+ assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
+
+ reg = PCH_ADPA;
+ val = I915_READ(reg);
+ I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
+ "PCH VGA enabled on transcoder %c, should be disabled\n",
+ pipe_name(pipe));
+
+ reg = PCH_LVDS;
+ val = I915_READ(reg);
+ I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
+ "PCH LVDS enabled on transcoder %c, should be disabled\n",
+ pipe_name(pipe));
+
+ assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
+ assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
+ assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
+}
+
+static void intel_init_dpio(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!IS_VALLEYVIEW(dev))
+ return;
+
+ /*
+ * IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C),
+ * CHV x1 PHY (DP/HDMI D)
+ * IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C)
+ */
+ if (IS_CHERRYVIEW(dev)) {
+ DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2;
+ DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO;
+ } else {
+ DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
+ }
+}
+
+static void vlv_enable_pll(struct intel_crtc *crtc,
+ const struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int reg = DPLL(crtc->pipe);
+ u32 dpll = pipe_config->dpll_hw_state.dpll;
+
+ assert_pipe_disabled(dev_priv, crtc->pipe);
+
+ /* No really, not for ILK+ */
+ BUG_ON(!IS_VALLEYVIEW(dev_priv->dev));
+
+ /* PLL is protected by panel, make sure we can write it */
+ if (IS_MOBILE(dev_priv->dev))
+ assert_panel_unlocked(dev_priv, crtc->pipe);
+
+ I915_WRITE(reg, dpll);
+ POSTING_READ(reg);
+ udelay(150);
+
+ if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
+ DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
+
+ I915_WRITE(DPLL_MD(crtc->pipe), pipe_config->dpll_hw_state.dpll_md);
+ POSTING_READ(DPLL_MD(crtc->pipe));
+
+ /* We do this three times for luck */
+ I915_WRITE(reg, dpll);
+ POSTING_READ(reg);
+ udelay(150); /* wait for warmup */
+ I915_WRITE(reg, dpll);
+ POSTING_READ(reg);
+ udelay(150); /* wait for warmup */
+ I915_WRITE(reg, dpll);
+ POSTING_READ(reg);
+ udelay(150); /* wait for warmup */
+}
+
+static void chv_enable_pll(struct intel_crtc *crtc,
+ const struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+ enum dpio_channel port = vlv_pipe_to_channel(pipe);
+ u32 tmp;
+
+ assert_pipe_disabled(dev_priv, crtc->pipe);
+
+ BUG_ON(!IS_CHERRYVIEW(dev_priv->dev));
+
+ mutex_lock(&dev_priv->dpio_lock);
+
+ /* Enable back the 10bit clock to display controller */
+ tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
+ tmp |= DPIO_DCLKP_EN;
+ vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
+
+ /*
+ * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
+ */
+ udelay(1);
+
+ /* Enable PLL */
+ I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
+
+ /* Check PLL is locked */
+ if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
+ DRM_ERROR("PLL %d failed to lock\n", pipe);
+
+ /* not sure when this should be written */
+ I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
+ POSTING_READ(DPLL_MD(pipe));
+
+ mutex_unlock(&dev_priv->dpio_lock);
+}
+
+static int intel_num_dvo_pipes(struct drm_device *dev)
+{
+ struct intel_crtc *crtc;
+ int count = 0;
+
+ for_each_intel_crtc(dev, crtc)
+ count += crtc->active &&
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO);
+
+ return count;
+}
+
+static void i9xx_enable_pll(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int reg = DPLL(crtc->pipe);
+ u32 dpll = crtc->config->dpll_hw_state.dpll;
+
+ assert_pipe_disabled(dev_priv, crtc->pipe);
+
+ /* No really, not for ILK+ */
+ BUG_ON(INTEL_INFO(dev)->gen >= 5);
+
+ /* PLL is protected by panel, make sure we can write it */
+ if (IS_MOBILE(dev) && !IS_I830(dev))
+ assert_panel_unlocked(dev_priv, crtc->pipe);
+
+ /* Enable DVO 2x clock on both PLLs if necessary */
+ if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
+ /*
+ * It appears to be important that we don't enable this
+ * for the current pipe before otherwise configuring the
+ * PLL. No idea how this should be handled if multiple
+ * DVO outputs are enabled simultaneosly.
+ */
+ dpll |= DPLL_DVO_2X_MODE;
+ I915_WRITE(DPLL(!crtc->pipe),
+ I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
+ }
+
+ /* Wait for the clocks to stabilize. */
+ POSTING_READ(reg);
+ udelay(150);
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ I915_WRITE(DPLL_MD(crtc->pipe),
+ crtc->config->dpll_hw_state.dpll_md);
+ } else {
+ /* The pixel multiplier can only be updated once the
+ * DPLL is enabled and the clocks are stable.
+ *
+ * So write it again.
+ */
+ I915_WRITE(reg, dpll);
+ }
+
+ /* We do this three times for luck */
+ I915_WRITE(reg, dpll);
+ POSTING_READ(reg);
+ udelay(150); /* wait for warmup */
+ I915_WRITE(reg, dpll);
+ POSTING_READ(reg);
+ udelay(150); /* wait for warmup */
+ I915_WRITE(reg, dpll);
+ POSTING_READ(reg);
+ udelay(150); /* wait for warmup */
+}
+
+/**
+ * i9xx_disable_pll - disable a PLL
+ * @dev_priv: i915 private structure
+ * @pipe: pipe PLL to disable
+ *
+ * Disable the PLL for @pipe, making sure the pipe is off first.
+ *
+ * Note! This is for pre-ILK only.
+ */
+static void i9xx_disable_pll(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe = crtc->pipe;
+
+ /* Disable DVO 2x clock on both PLLs if necessary */
+ if (IS_I830(dev) &&
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) &&
+ intel_num_dvo_pipes(dev) == 1) {
+ I915_WRITE(DPLL(PIPE_B),
+ I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
+ I915_WRITE(DPLL(PIPE_A),
+ I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
+ }
+
+ /* Don't disable pipe or pipe PLLs if needed */
+ if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
+ (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
+ return;
+
+ /* Make sure the pipe isn't still relying on us */
+ assert_pipe_disabled(dev_priv, pipe);
+
+ I915_WRITE(DPLL(pipe), 0);
+ POSTING_READ(DPLL(pipe));
+}
+
+static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+ u32 val = 0;
+
+ /* Make sure the pipe isn't still relying on us */
+ assert_pipe_disabled(dev_priv, pipe);
+
+ /*
+ * Leave integrated clock source and reference clock enabled for pipe B.
+ * The latter is needed for VGA hotplug / manual detection.
+ */
+ if (pipe == PIPE_B)
+ val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REFA_CLK_ENABLE_VLV;
+ I915_WRITE(DPLL(pipe), val);
+ POSTING_READ(DPLL(pipe));
+
+}
+
+static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+ enum dpio_channel port = vlv_pipe_to_channel(pipe);
+ u32 val;
+
+ /* Make sure the pipe isn't still relying on us */
+ assert_pipe_disabled(dev_priv, pipe);
+
+ /* Set PLL en = 0 */
+ val = DPLL_SSC_REF_CLOCK_CHV | DPLL_REFA_CLK_ENABLE_VLV;
+ if (pipe != PIPE_A)
+ val |= DPLL_INTEGRATED_CRI_CLK_VLV;
+ I915_WRITE(DPLL(pipe), val);
+ POSTING_READ(DPLL(pipe));
+
+ mutex_lock(&dev_priv->dpio_lock);
+
+ /* Disable 10bit clock to display controller */
+ val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
+ val &= ~DPIO_DCLKP_EN;
+ vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
+
+ /* disable left/right clock distribution */
+ if (pipe != PIPE_B) {
+ val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
+ val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
+ vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
+ } else {
+ val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
+ val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
+ vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
+ }
+
+ mutex_unlock(&dev_priv->dpio_lock);
+}
+
+void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
+ struct intel_digital_port *dport)
+{
+ u32 port_mask;
+ int dpll_reg;
+
+ switch (dport->port) {
+ case PORT_B:
+ port_mask = DPLL_PORTB_READY_MASK;
+ dpll_reg = DPLL(0);
+ break;
+ case PORT_C:
+ port_mask = DPLL_PORTC_READY_MASK;
+ dpll_reg = DPLL(0);
+ break;
+ case PORT_D:
+ port_mask = DPLL_PORTD_READY_MASK;
+ dpll_reg = DPIO_PHY_STATUS;
+ break;
+ default:
+ BUG();
+ }
+
+ if (wait_for((I915_READ(dpll_reg) & port_mask) == 0, 1000))
+ WARN(1, "timed out waiting for port %c ready: 0x%08x\n",
+ port_name(dport->port), I915_READ(dpll_reg));
+}
+
+static void intel_prepare_shared_dpll(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
+
+ if (WARN_ON(pll == NULL))
+ return;
+
+ WARN_ON(!pll->config.crtc_mask);
+ if (pll->active == 0) {
+ DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
+ WARN_ON(pll->on);
+ assert_shared_dpll_disabled(dev_priv, pll);
+
+ pll->mode_set(dev_priv, pll);
+ }
+}
+
+/**
+ * intel_enable_shared_dpll - enable PCH PLL
+ * @dev_priv: i915 private structure
+ * @pipe: pipe PLL to enable
+ *
+ * The PCH PLL needs to be enabled before the PCH transcoder, since it
+ * drives the transcoder clock.
+ */
+static void intel_enable_shared_dpll(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
+
+ if (WARN_ON(pll == NULL))
+ return;
+
+ if (WARN_ON(pll->config.crtc_mask == 0))
+ return;
+
+ DRM_DEBUG_KMS("enable %s (active %d, on? %d) for crtc %d\n",
+ pll->name, pll->active, pll->on,
+ crtc->base.base.id);
+
+ if (pll->active++) {
+ WARN_ON(!pll->on);
+ assert_shared_dpll_enabled(dev_priv, pll);
+ return;
+ }
+ WARN_ON(pll->on);
+
+ intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
+
+ DRM_DEBUG_KMS("enabling %s\n", pll->name);
+ pll->enable(dev_priv, pll);
+ pll->on = true;
+}
+
+static void intel_disable_shared_dpll(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
+
+ /* PCH only available on ILK+ */
+ BUG_ON(INTEL_INFO(dev)->gen < 5);
+ if (WARN_ON(pll == NULL))
+ return;
+
+ if (WARN_ON(pll->config.crtc_mask == 0))
+ return;
+
+ DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
+ pll->name, pll->active, pll->on,
+ crtc->base.base.id);
+
+ if (WARN_ON(pll->active == 0)) {
+ assert_shared_dpll_disabled(dev_priv, pll);
+ return;
+ }
+
+ assert_shared_dpll_enabled(dev_priv, pll);
+ WARN_ON(!pll->on);
+ if (--pll->active)
+ return;
+
+ DRM_DEBUG_KMS("disabling %s\n", pll->name);
+ pll->disable(dev_priv, pll);
+ pll->on = false;
+
+ intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
+}
+
+static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ uint32_t reg, val, pipeconf_val;
+
+ /* PCH only available on ILK+ */
+ BUG_ON(!HAS_PCH_SPLIT(dev));
+
+ /* Make sure PCH DPLL is enabled */
+ assert_shared_dpll_enabled(dev_priv,
+ intel_crtc_to_shared_dpll(intel_crtc));
+
+ /* FDI must be feeding us bits for PCH ports */
+ assert_fdi_tx_enabled(dev_priv, pipe);
+ assert_fdi_rx_enabled(dev_priv, pipe);
+
+ if (HAS_PCH_CPT(dev)) {
+ /* Workaround: Set the timing override bit before enabling the
+ * pch transcoder. */
+ reg = TRANS_CHICKEN2(pipe);
+ val = I915_READ(reg);
+ val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
+ I915_WRITE(reg, val);
+ }
+
+ reg = PCH_TRANSCONF(pipe);
+ val = I915_READ(reg);
+ pipeconf_val = I915_READ(PIPECONF(pipe));
+
+ if (HAS_PCH_IBX(dev_priv->dev)) {
+ /*
+ * make the BPC in transcoder be consistent with
+ * that in pipeconf reg.
+ */
+ val &= ~PIPECONF_BPC_MASK;
+ val |= pipeconf_val & PIPECONF_BPC_MASK;
+ }
+
+ val &= ~TRANS_INTERLACE_MASK;
+ if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
+ if (HAS_PCH_IBX(dev_priv->dev) &&
+ intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
+ val |= TRANS_LEGACY_INTERLACED_ILK;
+ else
+ val |= TRANS_INTERLACED;
+ else
+ val |= TRANS_PROGRESSIVE;
+
+ I915_WRITE(reg, val | TRANS_ENABLE);
+ if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
+ DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
+}
+
+static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
+ enum transcoder cpu_transcoder)
+{
+ u32 val, pipeconf_val;
+
+ /* PCH only available on ILK+ */
+ BUG_ON(!HAS_PCH_SPLIT(dev_priv->dev));
+
+ /* FDI must be feeding us bits for PCH ports */
+ assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
+ assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
+
+ /* Workaround: set timing override bit. */
+ val = I915_READ(_TRANSA_CHICKEN2);
+ val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
+ I915_WRITE(_TRANSA_CHICKEN2, val);
+
+ val = TRANS_ENABLE;
+ pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
+
+ if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
+ PIPECONF_INTERLACED_ILK)
+ val |= TRANS_INTERLACED;
+ else
+ val |= TRANS_PROGRESSIVE;
+
+ I915_WRITE(LPT_TRANSCONF, val);
+ if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100))
+ DRM_ERROR("Failed to enable PCH transcoder\n");
+}
+
+static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
+ enum pipe pipe)
+{
+ struct drm_device *dev = dev_priv->dev;
+ uint32_t reg, val;
+
+ /* FDI relies on the transcoder */
+ assert_fdi_tx_disabled(dev_priv, pipe);
+ assert_fdi_rx_disabled(dev_priv, pipe);
+
+ /* Ports must be off as well */
+ assert_pch_ports_disabled(dev_priv, pipe);
+
+ reg = PCH_TRANSCONF(pipe);
+ val = I915_READ(reg);
+ val &= ~TRANS_ENABLE;
+ I915_WRITE(reg, val);
+ /* wait for PCH transcoder off, transcoder state */
+ if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
+ DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
+
+ if (!HAS_PCH_IBX(dev)) {
+ /* Workaround: Clear the timing override chicken bit again. */
+ reg = TRANS_CHICKEN2(pipe);
+ val = I915_READ(reg);
+ val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
+ I915_WRITE(reg, val);
+ }
+}
+
+static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
+{
+ u32 val;
+
+ val = I915_READ(LPT_TRANSCONF);
+ val &= ~TRANS_ENABLE;
+ I915_WRITE(LPT_TRANSCONF, val);
+ /* wait for PCH transcoder off, transcoder state */
+ if (wait_for((I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE) == 0, 50))
+ DRM_ERROR("Failed to disable PCH transcoder\n");
+
+ /* Workaround: clear timing override bit. */
+ val = I915_READ(_TRANSA_CHICKEN2);
+ val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
+ I915_WRITE(_TRANSA_CHICKEN2, val);
+}
+
+/**
+ * intel_enable_pipe - enable a pipe, asserting requirements
+ * @crtc: crtc responsible for the pipe
+ *
+ * Enable @crtc's pipe, making sure that various hardware specific requirements
+ * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
+ */
+static void intel_enable_pipe(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe = crtc->pipe;
+ enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
+ pipe);
+ enum pipe pch_transcoder;
+ int reg;
+ u32 val;
+
+ assert_planes_disabled(dev_priv, pipe);
+ assert_cursor_disabled(dev_priv, pipe);
+ assert_sprites_disabled(dev_priv, pipe);
+
+ if (HAS_PCH_LPT(dev_priv->dev))
+ pch_transcoder = TRANSCODER_A;
+ else
+ pch_transcoder = pipe;
+
+ /*
+ * A pipe without a PLL won't actually be able to drive bits from
+ * a plane. On ILK+ the pipe PLLs are integrated, so we don't
+ * need the check.
+ */
+ if (!HAS_PCH_SPLIT(dev_priv->dev))
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI))
+ assert_dsi_pll_enabled(dev_priv);
+ else
+ assert_pll_enabled(dev_priv, pipe);
+ else {
+ if (crtc->config->has_pch_encoder) {
+ /* if driving the PCH, we need FDI enabled */
+ assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
+ assert_fdi_tx_pll_enabled(dev_priv,
+ (enum pipe) cpu_transcoder);
+ }
+ /* FIXME: assert CPU port conditions for SNB+ */
+ }
+
+ reg = PIPECONF(cpu_transcoder);
+ val = I915_READ(reg);
+ if (val & PIPECONF_ENABLE) {
+ WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
+ (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
+ return;
+ }
+
+ I915_WRITE(reg, val | PIPECONF_ENABLE);
+ POSTING_READ(reg);
+}
+
+/**
+ * intel_disable_pipe - disable a pipe, asserting requirements
+ * @crtc: crtc whose pipes is to be disabled
+ *
+ * Disable the pipe of @crtc, making sure that various hardware
+ * specific requirements are met, if applicable, e.g. plane
+ * disabled, panel fitter off, etc.
+ *
+ * Will wait until the pipe has shut down before returning.
+ */
+static void intel_disable_pipe(struct intel_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
+ enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+ enum pipe pipe = crtc->pipe;
+ int reg;
+ u32 val;
+
+ /*
+ * Make sure planes won't keep trying to pump pixels to us,
+ * or we might hang the display.
+ */
+ assert_planes_disabled(dev_priv, pipe);
+ assert_cursor_disabled(dev_priv, pipe);
+ assert_sprites_disabled(dev_priv, pipe);
+
+ reg = PIPECONF(cpu_transcoder);
+ val = I915_READ(reg);
+ if ((val & PIPECONF_ENABLE) == 0)
+ return;
+
+ /*
+ * Double wide has implications for planes
+ * so best keep it disabled when not needed.
+ */
+ if (crtc->config->double_wide)
+ val &= ~PIPECONF_DOUBLE_WIDE;
+
+ /* Don't disable pipe or pipe PLLs if needed */
+ if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
+ !(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
+ val &= ~PIPECONF_ENABLE;
+
+ I915_WRITE(reg, val);
+ if ((val & PIPECONF_ENABLE) == 0)
+ intel_wait_for_pipe_off(crtc);
+}
+
+/*
+ * Plane regs are double buffered, going from enabled->disabled needs a
+ * trigger in order to latch. The display address reg provides this.
+ */
+void intel_flush_primary_plane(struct drm_i915_private *dev_priv,
+ enum plane plane)
+{
+ struct drm_device *dev = dev_priv->dev;
+ u32 reg = INTEL_INFO(dev)->gen >= 4 ? DSPSURF(plane) : DSPADDR(plane);
+
+ I915_WRITE(reg, I915_READ(reg));
+ POSTING_READ(reg);
+}
+
+/**
+ * intel_enable_primary_hw_plane - enable the primary plane on a given pipe
+ * @plane: plane to be enabled
+ * @crtc: crtc for the plane
+ *
+ * Enable @plane on @crtc, making sure that the pipe is running first.
+ */
+static void intel_enable_primary_hw_plane(struct drm_plane *plane,
+ struct drm_crtc *crtc)
+{
+ struct drm_device *dev = plane->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ /* If the pipe isn't enabled, we can't pump pixels and may hang */
+ assert_pipe_enabled(dev_priv, intel_crtc->pipe);
+
+ if (intel_crtc->primary_enabled)
+ return;
+
+ intel_crtc->primary_enabled = true;
+
+ dev_priv->display.update_primary_plane(crtc, plane->fb,
+ crtc->x, crtc->y);
+
+ /*
+ * BDW signals flip done immediately if the plane
+ * is disabled, even if the plane enable is already
+ * armed to occur at the next vblank :(
+ */
+ if (IS_BROADWELL(dev))
+ intel_wait_for_vblank(dev, intel_crtc->pipe);
+}
+
+/**
+ * intel_disable_primary_hw_plane - disable the primary hardware plane
+ * @plane: plane to be disabled
+ * @crtc: crtc for the plane
+ *
+ * Disable @plane on @crtc, making sure that the pipe is running first.
+ */
+static void intel_disable_primary_hw_plane(struct drm_plane *plane,
+ struct drm_crtc *crtc)
+{
+ struct drm_device *dev = plane->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ if (WARN_ON(!intel_crtc->active))
+ return;
+
+ if (!intel_crtc->primary_enabled)
+ return;
+
+ intel_crtc->primary_enabled = false;
+
+ dev_priv->display.update_primary_plane(crtc, plane->fb,
+ crtc->x, crtc->y);
+}
+
+static bool need_vtd_wa(struct drm_device *dev)
+{
+#ifdef CONFIG_INTEL_IOMMU
+ if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped)
+ return true;
+#endif
+ return false;
+}
+
+unsigned int
+intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
+ uint64_t fb_format_modifier)
+{
+ unsigned int tile_height;
+ uint32_t pixel_bytes;
+
+ switch (fb_format_modifier) {
+ case DRM_FORMAT_MOD_NONE:
+ tile_height = 1;
+ break;
+ case I915_FORMAT_MOD_X_TILED:
+ tile_height = IS_GEN2(dev) ? 16 : 8;
+ break;
+ case I915_FORMAT_MOD_Y_TILED:
+ tile_height = 32;
+ break;
+ case I915_FORMAT_MOD_Yf_TILED:
+ pixel_bytes = drm_format_plane_cpp(pixel_format, 0);
+ switch (pixel_bytes) {
+ default:
+ case 1:
+ tile_height = 64;
+ break;
+ case 2:
+ case 4:
+ tile_height = 32;
+ break;
+ case 8:
+ tile_height = 16;
+ break;
+ case 16:
+ WARN_ONCE(1,
+ "128-bit pixels are not supported for display!");
+ tile_height = 16;
+ break;
+ }
+ break;
+ default:
+ MISSING_CASE(fb_format_modifier);
+ tile_height = 1;
+ break;
+ }
+
+ return tile_height;
+}
+
+unsigned int
+intel_fb_align_height(struct drm_device *dev, unsigned int height,
+ uint32_t pixel_format, uint64_t fb_format_modifier)
+{
+ return ALIGN(height, intel_tile_height(dev, pixel_format,
+ fb_format_modifier));
+}
+
+static int
+intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
+ const struct drm_plane_state *plane_state)
+{
+ struct intel_rotation_info *info = &view->rotation_info;
+
+ *view = i915_ggtt_view_normal;
+
+ if (!plane_state)
+ return 0;
+
+ if (!intel_rotation_90_or_270(plane_state->rotation))
+ return 0;
+
+ *view = i915_ggtt_view_rotated;
+
+ info->height = fb->height;
+ info->pixel_format = fb->pixel_format;
+ info->pitch = fb->pitches[0];
+ info->fb_modifier = fb->modifier[0];
+
+ if (!(info->fb_modifier == I915_FORMAT_MOD_Y_TILED ||
+ info->fb_modifier == I915_FORMAT_MOD_Yf_TILED)) {
+ DRM_DEBUG_KMS(
+ "Y or Yf tiling is needed for 90/270 rotation!\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int
+intel_pin_and_fence_fb_obj(struct drm_plane *plane,
+ struct drm_framebuffer *fb,
+ const struct drm_plane_state *plane_state,
+ struct intel_engine_cs *pipelined)
+{
+ struct drm_device *dev = fb->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+ struct i915_ggtt_view view;
+ u32 alignment;
+ int ret;
+
+ WARN_ON(!mutex_is_locked(&dev->struct_mutex));
+
+ switch (fb->modifier[0]) {
+ case DRM_FORMAT_MOD_NONE:
+ if (INTEL_INFO(dev)->gen >= 9)
+ alignment = 256 * 1024;
+ else if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
+ alignment = 128 * 1024;
+ else if (INTEL_INFO(dev)->gen >= 4)
+ alignment = 4 * 1024;
+ else
+ alignment = 64 * 1024;
+ break;
+ case I915_FORMAT_MOD_X_TILED:
+ if (INTEL_INFO(dev)->gen >= 9)
+ alignment = 256 * 1024;
+ else {
+ /* pin() will align the object as required by fence */
+ alignment = 0;
+ }
+ break;
+ case I915_FORMAT_MOD_Y_TILED:
+ case I915_FORMAT_MOD_Yf_TILED:
+ if (WARN_ONCE(INTEL_INFO(dev)->gen < 9,
+ "Y tiling bo slipped through, driver bug!\n"))
+ return -EINVAL;
+ alignment = 1 * 1024 * 1024;
+ break;
+ default:
+ MISSING_CASE(fb->modifier[0]);
+ return -EINVAL;
+ }
+
+ ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
+ if (ret)
+ return ret;
+
+ /* Note that the w/a also requires 64 PTE of padding following the
+ * bo. We currently fill all unused PTE with the shadow page and so
+ * we should always have valid PTE following the scanout preventing
+ * the VT-d warning.
+ */
+ if (need_vtd_wa(dev) && alignment < 256 * 1024)
+ alignment = 256 * 1024;
+
+ /*
+ * Global gtt pte registers are special registers which actually forward
+ * writes to a chunk of system memory. Which means that there is no risk
+ * that the register values disappear as soon as we call
+ * intel_runtime_pm_put(), so it is correct to wrap only the
+ * pin/unpin/fence and not more.
+ */
+ intel_runtime_pm_get(dev_priv);
+
+ dev_priv->mm.interruptible = false;
+ ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined,
+ &view);
+ if (ret)
+ goto err_interruptible;
+
+ /* Install a fence for tiled scan-out. Pre-i965 always needs a
+ * fence, whereas 965+ only requires a fence if using
+ * framebuffer compression. For simplicity, we always install
+ * a fence as the cost is not that onerous.
+ */
+ ret = i915_gem_object_get_fence(obj);
+ if (ret)
+ goto err_unpin;
+
+ i915_gem_object_pin_fence(obj);
+
+ dev_priv->mm.interruptible = true;
+ intel_runtime_pm_put(dev_priv);
+ return 0;
+
+err_unpin:
+ i915_gem_object_unpin_from_display_plane(obj, &view);
+err_interruptible:
+ dev_priv->mm.interruptible = true;
+ intel_runtime_pm_put(dev_priv);
+ return ret;
+}
+
+static void intel_unpin_fb_obj(struct drm_framebuffer *fb,
+ const struct drm_plane_state *plane_state)
+{
+ struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+ struct i915_ggtt_view view;
+ int ret;
+
+ WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
+
+ ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
+ WARN_ONCE(ret, "Couldn't get view from plane state!");
+
+ i915_gem_object_unpin_fence(obj);
+ i915_gem_object_unpin_from_display_plane(obj, &view);
+}
+
+/* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
+ * is assumed to be a power-of-two. */
+unsigned long intel_gen4_compute_page_offset(int *x, int *y,
+ unsigned int tiling_mode,
+ unsigned int cpp,
+ unsigned int pitch)
+{
+ if (tiling_mode != I915_TILING_NONE) {
+ unsigned int tile_rows, tiles;
+
+ tile_rows = *y / 8;
+ *y %= 8;
+
+ tiles = *x / (512/cpp);
+ *x %= 512/cpp;
+
+ return tile_rows * pitch * 8 + tiles * 4096;
+ } else {
+ unsigned int offset;
+
+ offset = *y * pitch + *x * cpp;
+ *y = 0;
+ *x = (offset & 4095) / cpp;
+ return offset & -4096;
+ }
+}
+
+static int i9xx_format_to_fourcc(int format)
+{
+ switch (format) {
+ case DISPPLANE_8BPP:
+ return DRM_FORMAT_C8;
+ case DISPPLANE_BGRX555:
+ return DRM_FORMAT_XRGB1555;
+ case DISPPLANE_BGRX565:
+ return DRM_FORMAT_RGB565;
+ default:
+ case DISPPLANE_BGRX888:
+ return DRM_FORMAT_XRGB8888;
+ case DISPPLANE_RGBX888:
+ return DRM_FORMAT_XBGR8888;
+ case DISPPLANE_BGRX101010:
+ return DRM_FORMAT_XRGB2101010;
+ case DISPPLANE_RGBX101010:
+ return DRM_FORMAT_XBGR2101010;
+ }
+}
+
+static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
+{
+ switch (format) {
+ case PLANE_CTL_FORMAT_RGB_565:
+ return DRM_FORMAT_RGB565;
+ default:
+ case PLANE_CTL_FORMAT_XRGB_8888:
+ if (rgb_order) {
+ if (alpha)
+ return DRM_FORMAT_ABGR8888;
+ else
+ return DRM_FORMAT_XBGR8888;
+ } else {
+ if (alpha)
+ return DRM_FORMAT_ARGB8888;
+ else
+ return DRM_FORMAT_XRGB8888;
+ }
+ case PLANE_CTL_FORMAT_XRGB_2101010:
+ if (rgb_order)
+ return DRM_FORMAT_XBGR2101010;
+ else
+ return DRM_FORMAT_XRGB2101010;
+ }
+}
+
+static bool
+intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
+ struct intel_initial_plane_config *plane_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_gem_object *obj = NULL;
+ struct drm_mode_fb_cmd2 mode_cmd = { 0 };
+ struct drm_framebuffer *fb = &plane_config->fb->base;
+ u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
+ u32 size_aligned = round_up(plane_config->base + plane_config->size,
+ PAGE_SIZE);
+
+ size_aligned -= base_aligned;
+
+ if (plane_config->size == 0)
+ return false;
+
+ obj = i915_gem_object_create_stolen_for_preallocated(dev,
+ base_aligned,
+ base_aligned,
+ size_aligned);
+ if (!obj)
+ return false;
+
+ obj->tiling_mode = plane_config->tiling;
+ if (obj->tiling_mode == I915_TILING_X)
+ obj->stride = fb->pitches[0];
+
+ mode_cmd.pixel_format = fb->pixel_format;
+ mode_cmd.width = fb->width;
+ mode_cmd.height = fb->height;
+ mode_cmd.pitches[0] = fb->pitches[0];
+ mode_cmd.modifier[0] = fb->modifier[0];
+ mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
+
+ mutex_lock(&dev->struct_mutex);
+ if (intel_framebuffer_init(dev, to_intel_framebuffer(fb),
+ &mode_cmd, obj)) {
+ DRM_DEBUG_KMS("intel fb init failed\n");
+ goto out_unref_obj;
+ }
+ mutex_unlock(&dev->struct_mutex);
+
+ DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
+ return true;
+
+out_unref_obj:
+ drm_gem_object_unreference(&obj->base);
+ mutex_unlock(&dev->struct_mutex);
+ return false;
+}
+
+/* Update plane->state->fb to match plane->fb after driver-internal updates */
+static void
+update_state_fb(struct drm_plane *plane)
+{
+ if (plane->fb == plane->state->fb)
+ return;
+
+ if (plane->state->fb)
+ drm_framebuffer_unreference(plane->state->fb);
+ plane->state->fb = plane->fb;
+ if (plane->state->fb)
+ drm_framebuffer_reference(plane->state->fb);
+}
+
+static void
+intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
+ struct intel_initial_plane_config *plane_config)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *c;
+ struct intel_crtc *i;
+ struct drm_i915_gem_object *obj;
+ struct drm_plane *primary = intel_crtc->base.primary;
+ struct drm_framebuffer *fb;
+
+ if (!plane_config->fb)
+ return;
+
+ if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
+ fb = &plane_config->fb->base;
+ goto valid_fb;
+ }
+
+ kfree(plane_config->fb);
+
+ /*
+ * Failed to alloc the obj, check to see if we should share
+ * an fb with another CRTC instead
+ */
+ for_each_crtc(dev, c) {
+ i = to_intel_crtc(c);
+
+ if (c == &intel_crtc->base)
+ continue;
+
+ if (!i->active)
+ continue;
+
+ fb = c->primary->fb;
+ if (!fb)
+ continue;
+
+ obj = intel_fb_obj(fb);
+ if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) {
+ drm_framebuffer_reference(fb);
+ goto valid_fb;
+ }
+ }
+
+ return;
+
+valid_fb:
+ obj = intel_fb_obj(fb);
+ if (obj->tiling_mode != I915_TILING_NONE)
+ dev_priv->preserve_bios_swizzle = true;
+
+ primary->fb = fb;
+ primary->state->crtc = &intel_crtc->base;
+ primary->crtc = &intel_crtc->base;
+ update_state_fb(primary);
+ obj->frontbuffer_bits |= INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
+}
+
+static void i9xx_update_primary_plane(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ int x, int y)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_i915_gem_object *obj;
+ int plane = intel_crtc->plane;
+ unsigned long linear_offset;
+ u32 dspcntr;
+ u32 reg = DSPCNTR(plane);
+ int pixel_size;
+
+ if (!intel_crtc->primary_enabled) {
+ I915_WRITE(reg, 0);
+ if (INTEL_INFO(dev)->gen >= 4)
+ I915_WRITE(DSPSURF(plane), 0);
+ else
+ I915_WRITE(DSPADDR(plane), 0);
+ POSTING_READ(reg);
+ return;
+ }
+
+ obj = intel_fb_obj(fb);
+ if (WARN_ON(obj == NULL))
+ return;
+
+ pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+
+ dspcntr = DISPPLANE_GAMMA_ENABLE;
+
+ dspcntr |= DISPLAY_PLANE_ENABLE;
+
+ if (INTEL_INFO(dev)->gen < 4) {
+ if (intel_crtc->pipe == PIPE_B)
+ dspcntr |= DISPPLANE_SEL_PIPE_B;
+
+ /* pipesrc and dspsize control the size that is scaled from,
+ * which should always be the user's requested size.
+ */
+ I915_WRITE(DSPSIZE(plane),
+ ((intel_crtc->config->pipe_src_h - 1) << 16) |
+ (intel_crtc->config->pipe_src_w - 1));
+ I915_WRITE(DSPPOS(plane), 0);
+ } else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) {
+ I915_WRITE(PRIMSIZE(plane),
+ ((intel_crtc->config->pipe_src_h - 1) << 16) |
+ (intel_crtc->config->pipe_src_w - 1));
+ I915_WRITE(PRIMPOS(plane), 0);
+ I915_WRITE(PRIMCNSTALPHA(plane), 0);
+ }
+
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_C8:
+ dspcntr |= DISPPLANE_8BPP;
+ break;
+ case DRM_FORMAT_XRGB1555:
+ case DRM_FORMAT_ARGB1555:
+ dspcntr |= DISPPLANE_BGRX555;
+ break;
+ case DRM_FORMAT_RGB565:
+ dspcntr |= DISPPLANE_BGRX565;
+ break;
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ dspcntr |= DISPPLANE_BGRX888;
+ break;
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ dspcntr |= DISPPLANE_RGBX888;
+ break;
+ case DRM_FORMAT_XRGB2101010:
+ case DRM_FORMAT_ARGB2101010:
+ dspcntr |= DISPPLANE_BGRX101010;
+ break;
+ case DRM_FORMAT_XBGR2101010:
+ case DRM_FORMAT_ABGR2101010:
+ dspcntr |= DISPPLANE_RGBX101010;
+ break;
+ default:
+ BUG();
+ }
+
+ if (INTEL_INFO(dev)->gen >= 4 &&
+ obj->tiling_mode != I915_TILING_NONE)
+ dspcntr |= DISPPLANE_TILED;
+
+ if (IS_G4X(dev))
+ dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
+
+ linear_offset = y * fb->pitches[0] + x * pixel_size;
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ intel_crtc->dspaddr_offset =
+ intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
+ pixel_size,
+ fb->pitches[0]);
+ linear_offset -= intel_crtc->dspaddr_offset;
+ } else {
+ intel_crtc->dspaddr_offset = linear_offset;
+ }
+
+ if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
+ dspcntr |= DISPPLANE_ROTATE_180;
+
+ x += (intel_crtc->config->pipe_src_w - 1);
+ y += (intel_crtc->config->pipe_src_h - 1);
+
+ /* Finding the last pixel of the last line of the display
+ data and adding to linear_offset*/
+ linear_offset +=
+ (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
+ (intel_crtc->config->pipe_src_w - 1) * pixel_size;
+ }
+
+ I915_WRITE(reg, dspcntr);
+
+ I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
+ if (INTEL_INFO(dev)->gen >= 4) {
+ I915_WRITE(DSPSURF(plane),
+ i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
+ I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
+ I915_WRITE(DSPLINOFF(plane), linear_offset);
+ } else
+ I915_WRITE(DSPADDR(plane), i915_gem_obj_ggtt_offset(obj) + linear_offset);
+ POSTING_READ(reg);
+}
+
+static void ironlake_update_primary_plane(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ int x, int y)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_i915_gem_object *obj;
+ int plane = intel_crtc->plane;
+ unsigned long linear_offset;
+ u32 dspcntr;
+ u32 reg = DSPCNTR(plane);
+ int pixel_size;
+
+ if (!intel_crtc->primary_enabled) {
+ I915_WRITE(reg, 0);
+ I915_WRITE(DSPSURF(plane), 0);
+ POSTING_READ(reg);
+ return;
+ }
+
+ obj = intel_fb_obj(fb);
+ if (WARN_ON(obj == NULL))
+ return;
+
+ pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
+
+ dspcntr = DISPPLANE_GAMMA_ENABLE;
+
+ dspcntr |= DISPLAY_PLANE_ENABLE;
+
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+ dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
+
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_C8:
+ dspcntr |= DISPPLANE_8BPP;
+ break;
+ case DRM_FORMAT_RGB565:
+ dspcntr |= DISPPLANE_BGRX565;
+ break;
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ dspcntr |= DISPPLANE_BGRX888;
+ break;
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ dspcntr |= DISPPLANE_RGBX888;
+ break;
+ case DRM_FORMAT_XRGB2101010:
+ case DRM_FORMAT_ARGB2101010:
+ dspcntr |= DISPPLANE_BGRX101010;
+ break;
+ case DRM_FORMAT_XBGR2101010:
+ case DRM_FORMAT_ABGR2101010:
+ dspcntr |= DISPPLANE_RGBX101010;
+ break;
+ default:
+ BUG();
+ }
+
+ if (obj->tiling_mode != I915_TILING_NONE)
+ dspcntr |= DISPPLANE_TILED;
+
+ if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
+ dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
+
+ linear_offset = y * fb->pitches[0] + x * pixel_size;
+ intel_crtc->dspaddr_offset =
+ intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
+ pixel_size,
+ fb->pitches[0]);
+ linear_offset -= intel_crtc->dspaddr_offset;
+ if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
+ dspcntr |= DISPPLANE_ROTATE_180;
+
+ if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
+ x += (intel_crtc->config->pipe_src_w - 1);
+ y += (intel_crtc->config->pipe_src_h - 1);
+
+ /* Finding the last pixel of the last line of the display
+ data and adding to linear_offset*/
+ linear_offset +=
+ (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
+ (intel_crtc->config->pipe_src_w - 1) * pixel_size;
+ }
+ }
+
+ I915_WRITE(reg, dspcntr);
+
+ I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
+ I915_WRITE(DSPSURF(plane),
+ i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+ I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
+ } else {
+ I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
+ I915_WRITE(DSPLINOFF(plane), linear_offset);
+ }
+ POSTING_READ(reg);
+}
+
+u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
+ uint32_t pixel_format)
+{
+ u32 bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
+
+ /*
+ * The stride is either expressed as a multiple of 64 bytes
+ * chunks for linear buffers or in number of tiles for tiled
+ * buffers.
+ */
+ switch (fb_modifier) {
+ case DRM_FORMAT_MOD_NONE:
+ return 64;
+ case I915_FORMAT_MOD_X_TILED:
+ if (INTEL_INFO(dev)->gen == 2)
+ return 128;
+ return 512;
+ case I915_FORMAT_MOD_Y_TILED:
+ /* No need to check for old gens and Y tiling since this is
+ * about the display engine and those will be blocked before
+ * we get here.
+ */
+ return 128;
+ case I915_FORMAT_MOD_Yf_TILED:
+ if (bits_per_pixel == 8)
+ return 64;
+ else
+ return 128;
+ default:
+ MISSING_CASE(fb_modifier);
+ return 64;
+ }
+}
+
+unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
+ struct drm_i915_gem_object *obj)
+{
+ const struct i915_ggtt_view *view = &i915_ggtt_view_normal;
+
+ if (intel_rotation_90_or_270(intel_plane->base.state->rotation))
+ view = &i915_ggtt_view_rotated;
+
+ return i915_gem_obj_ggtt_offset_view(obj, view);
+}
+
+static void skylake_update_primary_plane(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ int x, int y)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_i915_gem_object *obj;
+ int pipe = intel_crtc->pipe;
+ u32 plane_ctl, stride_div;
+ unsigned long surf_addr;
+
+ if (!intel_crtc->primary_enabled) {
+ I915_WRITE(PLANE_CTL(pipe, 0), 0);
+ I915_WRITE(PLANE_SURF(pipe, 0), 0);
+ POSTING_READ(PLANE_CTL(pipe, 0));
+ return;
+ }
+
+ plane_ctl = PLANE_CTL_ENABLE |
+ PLANE_CTL_PIPE_GAMMA_ENABLE |
+ PLANE_CTL_PIPE_CSC_ENABLE;
+
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_RGB565:
+ plane_ctl |= PLANE_CTL_FORMAT_RGB_565;
+ break;
+ case DRM_FORMAT_XRGB8888:
+ plane_ctl |= PLANE_CTL_FORMAT_XRGB_8888;
+ break;
+ case DRM_FORMAT_ARGB8888:
+ plane_ctl |= PLANE_CTL_FORMAT_XRGB_8888;
+ plane_ctl |= PLANE_CTL_ALPHA_SW_PREMULTIPLY;
+ break;
+ case DRM_FORMAT_XBGR8888:
+ plane_ctl |= PLANE_CTL_ORDER_RGBX;
+ plane_ctl |= PLANE_CTL_FORMAT_XRGB_8888;
+ break;
+ case DRM_FORMAT_ABGR8888:
+ plane_ctl |= PLANE_CTL_ORDER_RGBX;
+ plane_ctl |= PLANE_CTL_FORMAT_XRGB_8888;
+ plane_ctl |= PLANE_CTL_ALPHA_SW_PREMULTIPLY;
+ break;
+ case DRM_FORMAT_XRGB2101010:
+ plane_ctl |= PLANE_CTL_FORMAT_XRGB_2101010;
+ break;
+ case DRM_FORMAT_XBGR2101010:
+ plane_ctl |= PLANE_CTL_ORDER_RGBX;
+ plane_ctl |= PLANE_CTL_FORMAT_XRGB_2101010;
+ break;
+ default:
+ BUG();
+ }
+
+ switch (fb->modifier[0]) {
+ case DRM_FORMAT_MOD_NONE:
+ break;
+ case I915_FORMAT_MOD_X_TILED:
+ plane_ctl |= PLANE_CTL_TILED_X;
+ break;
+ case I915_FORMAT_MOD_Y_TILED:
+ plane_ctl |= PLANE_CTL_TILED_Y;
+ break;
+ case I915_FORMAT_MOD_Yf_TILED:
+ plane_ctl |= PLANE_CTL_TILED_YF;
+ break;
+ default:
+ MISSING_CASE(fb->modifier[0]);
+ }
+
+ plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
+ if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180))
+ plane_ctl |= PLANE_CTL_ROTATE_180;
+
+ obj = intel_fb_obj(fb);
+ stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
+ fb->pixel_format);
+ surf_addr = intel_plane_obj_offset(to_intel_plane(crtc->primary), obj);
+
+ I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
+ I915_WRITE(PLANE_POS(pipe, 0), 0);
+ I915_WRITE(PLANE_OFFSET(pipe, 0), (y << 16) | x);
+ I915_WRITE(PLANE_SIZE(pipe, 0),
+ (intel_crtc->config->pipe_src_h - 1) << 16 |
+ (intel_crtc->config->pipe_src_w - 1));
+ I915_WRITE(PLANE_STRIDE(pipe, 0), fb->pitches[0] / stride_div);
+ I915_WRITE(PLANE_SURF(pipe, 0), surf_addr);
+
+ POSTING_READ(PLANE_SURF(pipe, 0));
+}
+
+/* Assume fb object is pinned & idle & fenced and just update base pointers */
+static int
+intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
+ int x, int y, enum mode_set_atomic state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->display.disable_fbc)
+ dev_priv->display.disable_fbc(dev);
+
+ dev_priv->display.update_primary_plane(crtc, fb, x, y);
+
+ return 0;
+}
+
+static void intel_complete_page_flips(struct drm_device *dev)
+{
+ struct drm_crtc *crtc;
+
+ for_each_crtc(dev, crtc) {
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum plane plane = intel_crtc->plane;
+
+ intel_prepare_page_flip(dev, plane);
+ intel_finish_page_flip_plane(dev, plane);
+ }
+}
+
+static void intel_update_primary_planes(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc;
+
+ for_each_crtc(dev, crtc) {
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ drm_modeset_lock(&crtc->mutex, NULL);
+ /*
+ * FIXME: Once we have proper support for primary planes (and
+ * disabling them without disabling the entire crtc) allow again
+ * a NULL crtc->primary->fb.
+ */
+ if (intel_crtc->active && crtc->primary->fb)
+ dev_priv->display.update_primary_plane(crtc,
+ crtc->primary->fb,
+ crtc->x,
+ crtc->y);
+ drm_modeset_unlock(&crtc->mutex);
+ }
+}
+
+void intel_prepare_reset(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ struct intel_crtc *crtc;
+
+ /* no reset support for gen2 */
+ if (IS_GEN2(dev))
+ return;
+
+ /* reset doesn't touch the display */
+ if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
+ return;
+
+ drm_modeset_lock_all(dev);
+
+ /*
+ * Disabling the crtcs gracefully seems nicer. Also the
+ * g33 docs say we should at least disable all the planes.
+ */
+ for_each_intel_crtc(dev, crtc) {
+ if (crtc->active)
+ dev_priv->display.crtc_disable(&crtc->base);
+ }
+}
+
+void intel_finish_reset(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = to_i915(dev);
+
+ /*
+ * Flips in the rings will be nuked by the reset,
+ * so complete all pending flips so that user space
+ * will get its events and not get stuck.
+ */
+ intel_complete_page_flips(dev);
+
+ /* no reset support for gen2 */
+ if (IS_GEN2(dev))
+ return;
+
+ /* reset doesn't touch the display */
+ if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) {
+ /*
+ * Flips in the rings have been nuked by the reset,
+ * so update the base address of all primary
+ * planes to the the last fb to make sure we're
+ * showing the correct fb after a reset.
+ */
+ intel_update_primary_planes(dev);
+ return;
+ }
+
+ /*
+ * The display has been reset as well,
+ * so need a full re-initialization.
+ */
+ intel_runtime_pm_disable_interrupts(dev_priv);
+ intel_runtime_pm_enable_interrupts(dev_priv);
+
+ intel_modeset_init_hw(dev);
+
+ spin_lock_irq(&dev_priv->irq_lock);
+ if (dev_priv->display.hpd_irq_setup)
+ dev_priv->display.hpd_irq_setup(dev);
+ spin_unlock_irq(&dev_priv->irq_lock);
+
+ intel_modeset_setup_hw_state(dev, true);
+
+ intel_hpd_init(dev_priv);
+
+ drm_modeset_unlock_all(dev);
+}
+
+static int
+intel_finish_fb(struct drm_framebuffer *old_fb)
+{
+ struct drm_i915_gem_object *obj = intel_fb_obj(old_fb);
+ struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+ bool was_interruptible = dev_priv->mm.interruptible;
+ int ret;
+
+ /* Big Hammer, we also need to ensure that any pending
+ * MI_WAIT_FOR_EVENT inside a user batch buffer on the
+ * current scanout is retired before unpinning the old
+ * framebuffer.
+ *
+ * This should only fail upon a hung GPU, in which case we
+ * can safely continue.
+ */
+ dev_priv->mm.interruptible = false;
+ ret = i915_gem_object_finish_gpu(obj);
+ dev_priv->mm.interruptible = was_interruptible;
+
+ return ret;
+}
+
+static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ bool pending;
+
+ if (i915_reset_in_progress(&dev_priv->gpu_error) ||
+ intel_crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
+ return false;
+
+ spin_lock_irq(&dev->event_lock);
+ pending = to_intel_crtc(crtc)->unpin_work != NULL;
+ spin_unlock_irq(&dev->event_lock);
+
+ return pending;
+}
+
+static void intel_update_pipe_size(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ const struct drm_display_mode *adjusted_mode;
+
+ if (!i915.fastboot)
+ return;
+
+ /*
+ * Update pipe size and adjust fitter if needed: the reason for this is
+ * that in compute_mode_changes we check the native mode (not the pfit
+ * mode) to see if we can flip rather than do a full mode set. In the
+ * fastboot case, we'll flip, but if we don't update the pipesrc and
+ * pfit state, we'll end up with a big fb scanned out into the wrong
+ * sized surface.
+ *
+ * To fix this properly, we need to hoist the checks up into
+ * compute_mode_changes (or above), check the actual pfit state and
+ * whether the platform allows pfit disable with pipe active, and only
+ * then update the pipesrc and pfit state, even on the flip path.
+ */
+
+ adjusted_mode = &crtc->config->base.adjusted_mode;
+
+ I915_WRITE(PIPESRC(crtc->pipe),
+ ((adjusted_mode->crtc_hdisplay - 1) << 16) |
+ (adjusted_mode->crtc_vdisplay - 1));
+ if (!crtc->config->pch_pfit.enabled &&
+ (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
+ I915_WRITE(PF_CTL(crtc->pipe), 0);
+ I915_WRITE(PF_WIN_POS(crtc->pipe), 0);
+ I915_WRITE(PF_WIN_SZ(crtc->pipe), 0);
+ }
+ crtc->config->pipe_src_w = adjusted_mode->crtc_hdisplay;
+ crtc->config->pipe_src_h = adjusted_mode->crtc_vdisplay;
+}
+
+static void intel_fdi_normal_train(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp;
+
+ /* enable normal train */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ if (IS_IVYBRIDGE(dev)) {
+ temp &= ~FDI_LINK_TRAIN_NONE_IVB;
+ temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
+ } else {
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
+ }
+ I915_WRITE(reg, temp);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ if (HAS_PCH_CPT(dev)) {
+ temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+ temp |= FDI_LINK_TRAIN_NORMAL_CPT;
+ } else {
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_NONE;
+ }
+ I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
+
+ /* wait one idle pattern time */
+ POSTING_READ(reg);
+ udelay(1000);
+
+ /* IVB wants error correction enabled */
+ if (IS_IVYBRIDGE(dev))
+ I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
+ FDI_FE_ERRC_ENABLE);
+}
+
+/* The FDI link training functions for ILK/Ibexpeak. */
+static void ironlake_fdi_link_train(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp, tries;
+
+ /* FDI needs bits from pipe first */
+ assert_pipe_enabled(dev_priv, pipe);
+
+ /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
+ for train result */
+ reg = FDI_RX_IMR(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_RX_SYMBOL_LOCK;
+ temp &= ~FDI_RX_BIT_LOCK;
+ I915_WRITE(reg, temp);
+ I915_READ(reg);
+ udelay(150);
+
+ /* enable CPU FDI TX and PCH FDI RX */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_DP_PORT_WIDTH_MASK;
+ temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_1;
+ I915_WRITE(reg, temp | FDI_TX_ENABLE);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_1;
+ I915_WRITE(reg, temp | FDI_RX_ENABLE);
+
+ POSTING_READ(reg);
+ udelay(150);
+
+ /* Ironlake workaround, enable clock pointer after FDI enable*/
+ I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
+ I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
+ FDI_RX_PHASE_SYNC_POINTER_EN);
+
+ reg = FDI_RX_IIR(pipe);
+ for (tries = 0; tries < 5; tries++) {
+ temp = I915_READ(reg);
+ DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
+
+ if ((temp & FDI_RX_BIT_LOCK)) {
+ DRM_DEBUG_KMS("FDI train 1 done.\n");
+ I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
+ break;
+ }
+ }
+ if (tries == 5)
+ DRM_ERROR("FDI train 1 fail!\n");
+
+ /* Train 2 */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_2;
+ I915_WRITE(reg, temp);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_2;
+ I915_WRITE(reg, temp);
+
+ POSTING_READ(reg);
+ udelay(150);
+
+ reg = FDI_RX_IIR(pipe);
+ for (tries = 0; tries < 5; tries++) {
+ temp = I915_READ(reg);
+ DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
+
+ if (temp & FDI_RX_SYMBOL_LOCK) {
+ I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
+ DRM_DEBUG_KMS("FDI train 2 done.\n");
+ break;
+ }
+ }
+ if (tries == 5)
+ DRM_ERROR("FDI train 2 fail!\n");
+
+ DRM_DEBUG_KMS("FDI train done\n");
+
+}
+
+static const int snb_b_fdi_train_param[] = {
+ FDI_LINK_TRAIN_400MV_0DB_SNB_B,
+ FDI_LINK_TRAIN_400MV_6DB_SNB_B,
+ FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
+ FDI_LINK_TRAIN_800MV_0DB_SNB_B,
+};
+
+/* The FDI link training functions for SNB/Cougarpoint. */
+static void gen6_fdi_link_train(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp, i, retry;
+
+ /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
+ for train result */
+ reg = FDI_RX_IMR(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_RX_SYMBOL_LOCK;
+ temp &= ~FDI_RX_BIT_LOCK;
+ I915_WRITE(reg, temp);
+
+ POSTING_READ(reg);
+ udelay(150);
+
+ /* enable CPU FDI TX and PCH FDI RX */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_DP_PORT_WIDTH_MASK;
+ temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_1;
+ temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+ /* SNB-B */
+ temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
+ I915_WRITE(reg, temp | FDI_TX_ENABLE);
+
+ I915_WRITE(FDI_RX_MISC(pipe),
+ FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ if (HAS_PCH_CPT(dev)) {
+ temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+ temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
+ } else {
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_1;
+ }
+ I915_WRITE(reg, temp | FDI_RX_ENABLE);
+
+ POSTING_READ(reg);
+ udelay(150);
+
+ for (i = 0; i < 4; i++) {
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+ temp |= snb_b_fdi_train_param[i];
+ I915_WRITE(reg, temp);
+
+ POSTING_READ(reg);
+ udelay(500);
+
+ for (retry = 0; retry < 5; retry++) {
+ reg = FDI_RX_IIR(pipe);
+ temp = I915_READ(reg);
+ DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
+ if (temp & FDI_RX_BIT_LOCK) {
+ I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
+ DRM_DEBUG_KMS("FDI train 1 done.\n");
+ break;
+ }
+ udelay(50);
+ }
+ if (retry < 5)
+ break;
+ }
+ if (i == 4)
+ DRM_ERROR("FDI train 1 fail!\n");
+
+ /* Train 2 */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_2;
+ if (IS_GEN6(dev)) {
+ temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+ /* SNB-B */
+ temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
+ }
+ I915_WRITE(reg, temp);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ if (HAS_PCH_CPT(dev)) {
+ temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+ temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
+ } else {
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_2;
+ }
+ I915_WRITE(reg, temp);
+
+ POSTING_READ(reg);
+ udelay(150);
+
+ for (i = 0; i < 4; i++) {
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+ temp |= snb_b_fdi_train_param[i];
+ I915_WRITE(reg, temp);
+
+ POSTING_READ(reg);
+ udelay(500);
+
+ for (retry = 0; retry < 5; retry++) {
+ reg = FDI_RX_IIR(pipe);
+ temp = I915_READ(reg);
+ DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
+ if (temp & FDI_RX_SYMBOL_LOCK) {
+ I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
+ DRM_DEBUG_KMS("FDI train 2 done.\n");
+ break;
+ }
+ udelay(50);
+ }
+ if (retry < 5)
+ break;
+ }
+ if (i == 4)
+ DRM_ERROR("FDI train 2 fail!\n");
+
+ DRM_DEBUG_KMS("FDI train done.\n");
+}
+
+/* Manual link training for Ivy Bridge A0 parts */
+static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp, i, j;
+
+ /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
+ for train result */
+ reg = FDI_RX_IMR(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_RX_SYMBOL_LOCK;
+ temp &= ~FDI_RX_BIT_LOCK;
+ I915_WRITE(reg, temp);
+
+ POSTING_READ(reg);
+ udelay(150);
+
+ DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
+ I915_READ(FDI_RX_IIR(pipe)));
+
+ /* Try each vswing and preemphasis setting twice before moving on */
+ for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
+ /* disable first in case we need to retry */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
+ temp &= ~FDI_TX_ENABLE;
+ I915_WRITE(reg, temp);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_AUTO;
+ temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+ temp &= ~FDI_RX_ENABLE;
+ I915_WRITE(reg, temp);
+
+ /* enable CPU FDI TX and PCH FDI RX */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_DP_PORT_WIDTH_MASK;
+ temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
+ temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
+ temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
+ temp |= snb_b_fdi_train_param[j/2];
+ temp |= FDI_COMPOSITE_SYNC;
+ I915_WRITE(reg, temp | FDI_TX_ENABLE);
+
+ I915_WRITE(FDI_RX_MISC(pipe),
+ FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
+ temp |= FDI_COMPOSITE_SYNC;
+ I915_WRITE(reg, temp | FDI_RX_ENABLE);
+
+ POSTING_READ(reg);
+ udelay(1); /* should be 0.5us */
+
+ for (i = 0; i < 4; i++) {
+ reg = FDI_RX_IIR(pipe);
+ temp = I915_READ(reg);
+ DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
+
+ if (temp & FDI_RX_BIT_LOCK ||
+ (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
+ I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
+ DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
+ i);
+ break;
+ }
+ udelay(1); /* should be 0.5us */
+ }
+ if (i == 4) {
+ DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
+ continue;
+ }
+
+ /* Train 2 */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_NONE_IVB;
+ temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
+ I915_WRITE(reg, temp);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+ temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
+ I915_WRITE(reg, temp);
+
+ POSTING_READ(reg);
+ udelay(2); /* should be 1.5us */
+
+ for (i = 0; i < 4; i++) {
+ reg = FDI_RX_IIR(pipe);
+ temp = I915_READ(reg);
+ DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
+
+ if (temp & FDI_RX_SYMBOL_LOCK ||
+ (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
+ I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
+ DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
+ i);
+ goto train_done;
+ }
+ udelay(2); /* should be 1.5us */
+ }
+ if (i == 4)
+ DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
+ }
+
+train_done:
+ DRM_DEBUG_KMS("FDI train done.\n");
+}
+
+static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp;
+
+
+ /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
+ temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
+ temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
+ I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
+
+ POSTING_READ(reg);
+ udelay(200);
+
+ /* Switch from Rawclk to PCDclk */
+ temp = I915_READ(reg);
+ I915_WRITE(reg, temp | FDI_PCDCLK);
+
+ POSTING_READ(reg);
+ udelay(200);
+
+ /* Enable CPU FDI TX PLL, always on for Ironlake */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ if ((temp & FDI_TX_PLL_ENABLE) == 0) {
+ I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
+
+ POSTING_READ(reg);
+ udelay(100);
+ }
+}
+
+static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp;
+
+ /* Switch from PCDclk to Rawclk */
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ I915_WRITE(reg, temp & ~FDI_PCDCLK);
+
+ /* Disable CPU FDI TX PLL */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
+
+ POSTING_READ(reg);
+ udelay(100);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
+
+ /* Wait for the clocks to turn off. */
+ POSTING_READ(reg);
+ udelay(100);
+}
+
+static void ironlake_fdi_disable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp;
+
+ /* disable CPU FDI tx and PCH FDI rx */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
+ POSTING_READ(reg);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~(0x7 << 16);
+ temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
+ I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
+
+ POSTING_READ(reg);
+ udelay(100);
+
+ /* Ironlake workaround, disable clock pointer after downing FDI */
+ if (HAS_PCH_IBX(dev))
+ I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
+
+ /* still set train pattern 1 */
+ reg = FDI_TX_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_1;
+ I915_WRITE(reg, temp);
+
+ reg = FDI_RX_CTL(pipe);
+ temp = I915_READ(reg);
+ if (HAS_PCH_CPT(dev)) {
+ temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
+ temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
+ } else {
+ temp &= ~FDI_LINK_TRAIN_NONE;
+ temp |= FDI_LINK_TRAIN_PATTERN_1;
+ }
+ /* BPC in FDI rx is consistent with that in PIPECONF */
+ temp &= ~(0x07 << 16);
+ temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
+ I915_WRITE(reg, temp);
+
+ POSTING_READ(reg);
+ udelay(100);
+}
+
+bool intel_has_pending_fb_unpin(struct drm_device *dev)
+{
+ struct intel_crtc *crtc;
+
+ /* Note that we don't need to be called with mode_config.lock here
+ * as our list of CRTC objects is static for the lifetime of the
+ * device and so cannot disappear as we iterate. Similarly, we can
+ * happily treat the predicates as racy, atomic checks as userspace
+ * cannot claim and pin a new fb without at least acquring the
+ * struct_mutex and so serialising with us.
+ */
+ for_each_intel_crtc(dev, crtc) {
+ if (atomic_read(&crtc->unpin_work_count) == 0)
+ continue;
+
+ if (crtc->unpin_work)
+ intel_wait_for_vblank(dev, crtc->pipe);
+
+ return true;
+ }
+
+ return false;
+}
+
+static void page_flip_completed(struct intel_crtc *intel_crtc)
+{
+ struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
+ struct intel_unpin_work *work = intel_crtc->unpin_work;
+
+ /* ensure that the unpin work is consistent wrt ->pending. */
+ smp_rmb();
+ intel_crtc->unpin_work = NULL;
+
+ if (work->event)
+ drm_send_vblank_event(intel_crtc->base.dev,
+ intel_crtc->pipe,
+ work->event);
+
+ drm_crtc_vblank_put(&intel_crtc->base);
+
+ wake_up_all(&dev_priv->pending_flip_queue);
+ queue_work(dev_priv->wq, &work->work);
+
+ trace_i915_flip_complete(intel_crtc->plane,
+ work->pending_flip_obj);
+}
+
+void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
+ if (WARN_ON(wait_event_timeout(dev_priv->pending_flip_queue,
+ !intel_crtc_has_pending_flip(crtc),
+ 60*HZ) == 0)) {
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ spin_lock_irq(&dev->event_lock);
+ if (intel_crtc->unpin_work) {
+ WARN_ONCE(1, "Removing stuck page flip\n");
+ page_flip_completed(intel_crtc);
+ }
+ spin_unlock_irq(&dev->event_lock);
+ }
+
+ if (crtc->primary->fb) {
+ mutex_lock(&dev->struct_mutex);
+ intel_finish_fb(crtc->primary->fb);
+ mutex_unlock(&dev->struct_mutex);
+ }
+}
+
+/* Program iCLKIP clock to the desired frequency */
+static void lpt_program_iclkip(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
+ u32 divsel, phaseinc, auxdiv, phasedir = 0;
+ u32 temp;
+
+ mutex_lock(&dev_priv->dpio_lock);
+
+ /* It is necessary to ungate the pixclk gate prior to programming
+ * the divisors, and gate it back when it is done.
+ */
+ I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
+
+ /* Disable SSCCTL */
+ intel_sbi_write(dev_priv, SBI_SSCCTL6,
+ intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK) |
+ SBI_SSCCTL_DISABLE,
+ SBI_ICLK);
+
+ /* 20MHz is a corner case which is out of range for the 7-bit divisor */
+ if (clock == 20000) {
+ auxdiv = 1;
+ divsel = 0x41;
+ phaseinc = 0x20;
+ } else {
+ /* The iCLK virtual clock root frequency is in MHz,
+ * but the adjusted_mode->crtc_clock in in KHz. To get the
+ * divisors, it is necessary to divide one by another, so we
+ * convert the virtual clock precision to KHz here for higher
+ * precision.
+ */
+ u32 iclk_virtual_root_freq = 172800 * 1000;
+ u32 iclk_pi_range = 64;
+ u32 desired_divisor, msb_divisor_value, pi_value;
+
+ desired_divisor = (iclk_virtual_root_freq / clock);
+ msb_divisor_value = desired_divisor / iclk_pi_range;
+ pi_value = desired_divisor % iclk_pi_range;
+
+ auxdiv = 0;
+ divsel = msb_divisor_value - 2;
+ phaseinc = pi_value;
+ }
+
+ /* This should not happen with any sane values */
+ WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
+ ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
+ WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
+ ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
+
+ DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
+ clock,
+ auxdiv,
+ divsel,
+ phasedir,
+ phaseinc);
+
+ /* Program SSCDIVINTPHASE6 */
+ temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
+ temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
+ temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
+ temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
+ temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
+ temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
+ temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
+ intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
+
+ /* Program SSCAUXDIV */
+ temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
+ temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
+ temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
+ intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
+
+ /* Enable modulator and associated divider */
+ temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
+ temp &= ~SBI_SSCCTL_DISABLE;
+ intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
+
+ /* Wait for initialization time */
+ udelay(24);
+
+ I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
+
+ mutex_unlock(&dev_priv->dpio_lock);
+}
+
+static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc,
+ enum pipe pch_transcoder)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+
+ I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
+ I915_READ(HTOTAL(cpu_transcoder)));
+ I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
+ I915_READ(HBLANK(cpu_transcoder)));
+ I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
+ I915_READ(HSYNC(cpu_transcoder)));
+
+ I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
+ I915_READ(VTOTAL(cpu_transcoder)));
+ I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
+ I915_READ(VBLANK(cpu_transcoder)));
+ I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
+ I915_READ(VSYNC(cpu_transcoder)));
+ I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
+ I915_READ(VSYNCSHIFT(cpu_transcoder)));
+}
+
+static void cpt_set_fdi_bc_bifurcation(struct drm_device *dev, bool enable)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t temp;
+
+ temp = I915_READ(SOUTH_CHICKEN1);
+ if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
+ return;
+
+ WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
+ WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
+
+ temp &= ~FDI_BC_BIFURCATION_SELECT;
+ if (enable)
+ temp |= FDI_BC_BIFURCATION_SELECT;
+
+ DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
+ I915_WRITE(SOUTH_CHICKEN1, temp);
+ POSTING_READ(SOUTH_CHICKEN1);
+}
+
+static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+
+ switch (intel_crtc->pipe) {
+ case PIPE_A:
+ break;
+ case PIPE_B:
+ if (intel_crtc->config->fdi_lanes > 2)
+ cpt_set_fdi_bc_bifurcation(dev, false);
+ else
+ cpt_set_fdi_bc_bifurcation(dev, true);
+
+ break;
+ case PIPE_C:
+ cpt_set_fdi_bc_bifurcation(dev, true);
+
+ break;
+ default:
+ BUG();
+ }
+}
+
+/*
+ * Enable PCH resources required for PCH ports:
+ * - PCH PLLs
+ * - FDI training & RX/TX
+ * - update transcoder timings
+ * - DP transcoding bits
+ * - transcoder
+ */
+static void ironlake_pch_enable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp;
+
+ assert_pch_transcoder_disabled(dev_priv, pipe);
+
+ if (IS_IVYBRIDGE(dev))
+ ivybridge_update_fdi_bc_bifurcation(intel_crtc);
+
+ /* Write the TU size bits before fdi link training, so that error
+ * detection works. */
+ I915_WRITE(FDI_RX_TUSIZE1(pipe),
+ I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
+
+ /* For PCH output, training FDI link */
+ dev_priv->display.fdi_link_train(crtc);
+
+ /* We need to program the right clock selection before writing the pixel
+ * mutliplier into the DPLL. */
+ if (HAS_PCH_CPT(dev)) {
+ u32 sel;
+
+ temp = I915_READ(PCH_DPLL_SEL);
+ temp |= TRANS_DPLL_ENABLE(pipe);
+ sel = TRANS_DPLLB_SEL(pipe);
+ if (intel_crtc->config->shared_dpll == DPLL_ID_PCH_PLL_B)
+ temp |= sel;
+ else
+ temp &= ~sel;
+ I915_WRITE(PCH_DPLL_SEL, temp);
+ }
+
+ /* XXX: pch pll's can be enabled any time before we enable the PCH
+ * transcoder, and we actually should do this to not upset any PCH
+ * transcoder that already use the clock when we share it.
+ *
+ * Note that enable_shared_dpll tries to do the right thing, but
+ * get_shared_dpll unconditionally resets the pll - we need that to have
+ * the right LVDS enable sequence. */
+ intel_enable_shared_dpll(intel_crtc);
+
+ /* set transcoder timing, panel must allow it */
+ assert_panel_unlocked(dev_priv, pipe);
+ ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
+
+ intel_fdi_normal_train(crtc);
+
+ /* For PCH DP, enable TRANS_DP_CTL */
+ if (HAS_PCH_CPT(dev) && intel_crtc->config->has_dp_encoder) {
+ u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
+ reg = TRANS_DP_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~(TRANS_DP_PORT_SEL_MASK |
+ TRANS_DP_SYNC_MASK |
+ TRANS_DP_BPC_MASK);
+ temp |= (TRANS_DP_OUTPUT_ENABLE |
+ TRANS_DP_ENH_FRAMING);
+ temp |= bpc << 9; /* same format but at 11:9 */
+
+ if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
+ temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
+ if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
+ temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
+
+ switch (intel_trans_dp_port_sel(crtc)) {
+ case PCH_DP_B:
+ temp |= TRANS_DP_PORT_SEL_B;
+ break;
+ case PCH_DP_C:
+ temp |= TRANS_DP_PORT_SEL_C;
+ break;
+ case PCH_DP_D:
+ temp |= TRANS_DP_PORT_SEL_D;
+ break;
+ default:
+ BUG();
+ }
+
+ I915_WRITE(reg, temp);
+ }
+
+ ironlake_enable_pch_transcoder(dev_priv, pipe);
+}
+
+static void lpt_pch_enable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+
+ assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
+
+ lpt_program_iclkip(crtc);
+
+ /* Set transcoder timing. */
+ ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
+
+ lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
+}
+
+void intel_put_shared_dpll(struct intel_crtc *crtc)
+{
+ struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
+
+ if (pll == NULL)
+ return;
+
+ if (!(pll->config.crtc_mask & (1 << crtc->pipe))) {
+ WARN(1, "bad %s crtc mask\n", pll->name);
+ return;
+ }
+
+ pll->config.crtc_mask &= ~(1 << crtc->pipe);
+ if (pll->config.crtc_mask == 0) {
+ WARN_ON(pll->on);
+ WARN_ON(pll->active);
+ }
+
+ crtc->config->shared_dpll = DPLL_ID_PRIVATE;
+}
+
+struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
+ struct intel_shared_dpll *pll;
+ enum intel_dpll_id i;
+
+ if (HAS_PCH_IBX(dev_priv->dev)) {
+ /* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
+ i = (enum intel_dpll_id) crtc->pipe;
+ pll = &dev_priv->shared_dplls[i];
+
+ DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
+ crtc->base.base.id, pll->name);
+
+ WARN_ON(pll->new_config->crtc_mask);
+
+ goto found;
+ }
+
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ pll = &dev_priv->shared_dplls[i];
+
+ /* Only want to check enabled timings first */
+ if (pll->new_config->crtc_mask == 0)
+ continue;
+
+ if (memcmp(&crtc_state->dpll_hw_state,
+ &pll->new_config->hw_state,
+ sizeof(pll->new_config->hw_state)) == 0) {
+ DRM_DEBUG_KMS("CRTC:%d sharing existing %s (crtc mask 0x%08x, ative %d)\n",
+ crtc->base.base.id, pll->name,
+ pll->new_config->crtc_mask,
+ pll->active);
+ goto found;
+ }
+ }
+
+ /* Ok no matching timings, maybe there's a free one? */
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ pll = &dev_priv->shared_dplls[i];
+ if (pll->new_config->crtc_mask == 0) {
+ DRM_DEBUG_KMS("CRTC:%d allocated %s\n",
+ crtc->base.base.id, pll->name);
+ goto found;
+ }
+ }
+
+ return NULL;
+
+found:
+ if (pll->new_config->crtc_mask == 0)
+ pll->new_config->hw_state = crtc_state->dpll_hw_state;
+
+ crtc_state->shared_dpll = i;
+ DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
+ pipe_name(crtc->pipe));
+
+ pll->new_config->crtc_mask |= 1 << crtc->pipe;
+
+ return pll;
+}
+
+/**
+ * intel_shared_dpll_start_config - start a new PLL staged config
+ * @dev_priv: DRM device
+ * @clear_pipes: mask of pipes that will have their PLLs freed
+ *
+ * Starts a new PLL staged config, copying the current config but
+ * releasing the references of pipes specified in clear_pipes.
+ */
+static int intel_shared_dpll_start_config(struct drm_i915_private *dev_priv,
+ unsigned clear_pipes)
+{
+ struct intel_shared_dpll *pll;
+ enum intel_dpll_id i;
+
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ pll = &dev_priv->shared_dplls[i];
+
+ pll->new_config = kmemdup(&pll->config, sizeof pll->config,
+ GFP_KERNEL);
+ if (!pll->new_config)
+ goto cleanup;
+
+ pll->new_config->crtc_mask &= ~clear_pipes;
+ }
+
+ return 0;
+
+cleanup:
+ while (--i >= 0) {
+ pll = &dev_priv->shared_dplls[i];
+ kfree(pll->new_config);
+ pll->new_config = NULL;
+ }
+
+ return -ENOMEM;
+}
+
+static void intel_shared_dpll_commit(struct drm_i915_private *dev_priv)
+{
+ struct intel_shared_dpll *pll;
+ enum intel_dpll_id i;
+
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ pll = &dev_priv->shared_dplls[i];
+
+ WARN_ON(pll->new_config == &pll->config);
+
+ pll->config = *pll->new_config;
+ kfree(pll->new_config);
+ pll->new_config = NULL;
+ }
+}
+
+static void intel_shared_dpll_abort_config(struct drm_i915_private *dev_priv)
+{
+ struct intel_shared_dpll *pll;
+ enum intel_dpll_id i;
+
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ pll = &dev_priv->shared_dplls[i];
+
+ WARN_ON(pll->new_config == &pll->config);
+
+ kfree(pll->new_config);
+ pll->new_config = NULL;
+ }
+}
+
+static void cpt_verify_modeset(struct drm_device *dev, int pipe)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int dslreg = PIPEDSL(pipe);
+ u32 temp;
+
+ temp = I915_READ(dslreg);
+ udelay(500);
+ if (wait_for(I915_READ(dslreg) != temp, 5)) {
+ if (wait_for(I915_READ(dslreg) != temp, 5))
+ DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
+ }
+}
+
+static void skylake_pfit_enable(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+
+ if (crtc->config->pch_pfit.enabled) {
+ I915_WRITE(PS_CTL(pipe), PS_ENABLE);
+ I915_WRITE(PS_WIN_POS(pipe), crtc->config->pch_pfit.pos);
+ I915_WRITE(PS_WIN_SZ(pipe), crtc->config->pch_pfit.size);
+ }
+}
+
+static void ironlake_pfit_enable(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+
+ if (crtc->config->pch_pfit.enabled) {
+ /* Force use of hard-coded filter coefficients
+ * as some pre-programmed values are broken,
+ * e.g. x201.
+ */
+ if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
+ I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
+ PF_PIPE_SEL_IVB(pipe));
+ else
+ I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
+ I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos);
+ I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size);
+ }
+}
+
+static void intel_enable_sprite_planes(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
+ struct drm_plane *plane;
+ struct intel_plane *intel_plane;
+
+ drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
+ intel_plane = to_intel_plane(plane);
+ if (intel_plane->pipe == pipe)
+ intel_plane_restore(&intel_plane->base);
+ }
+}
+
+/*
+ * Disable a plane internally without actually modifying the plane's state.
+ * This will allow us to easily restore the plane later by just reprogramming
+ * its state.
+ */
+static void disable_plane_internal(struct drm_plane *plane)
+{
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+ struct drm_plane_state *state =
+ plane->funcs->atomic_duplicate_state(plane);
+ struct intel_plane_state *intel_state = to_intel_plane_state(state);
+
+ intel_state->visible = false;
+ intel_plane->commit_plane(plane, intel_state);
+
+ intel_plane_destroy_state(plane, state);
+}
+
+static void intel_disable_sprite_planes(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
+ struct drm_plane *plane;
+ struct intel_plane *intel_plane;
+
+ drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
+ intel_plane = to_intel_plane(plane);
+ if (plane->fb && intel_plane->pipe == pipe)
+ disable_plane_internal(plane);
+ }
+}
+
+void hsw_enable_ips(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!crtc->config->ips_enabled)
+ return;
+
+ /* We can only enable IPS after we enable a plane and wait for a vblank */
+ intel_wait_for_vblank(dev, crtc->pipe);
+
+ assert_plane_enabled(dev_priv, crtc->plane);
+ if (IS_BROADWELL(dev)) {
+ mutex_lock(&dev_priv->rps.hw_lock);
+ WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
+ mutex_unlock(&dev_priv->rps.hw_lock);
+ /* Quoting Art Runyan: "its not safe to expect any particular
+ * value in IPS_CTL bit 31 after enabling IPS through the
+ * mailbox." Moreover, the mailbox may return a bogus state,
+ * so we need to just enable it and continue on.
+ */
+ } else {
+ I915_WRITE(IPS_CTL, IPS_ENABLE);
+ /* The bit only becomes 1 in the next vblank, so this wait here
+ * is essentially intel_wait_for_vblank. If we don't have this
+ * and don't wait for vblanks until the end of crtc_enable, then
+ * the HW state readout code will complain that the expected
+ * IPS_CTL value is not the one we read. */
+ if (wait_for(I915_READ_NOTRACE(IPS_CTL) & IPS_ENABLE, 50))
+ DRM_ERROR("Timed out waiting for IPS enable\n");
+ }
+}
+
+void hsw_disable_ips(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!crtc->config->ips_enabled)
+ return;
+
+ assert_plane_enabled(dev_priv, crtc->plane);
+ if (IS_BROADWELL(dev)) {
+ mutex_lock(&dev_priv->rps.hw_lock);
+ WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
+ mutex_unlock(&dev_priv->rps.hw_lock);
+ /* wait for pcode to finish disabling IPS, which may take up to 42ms */
+ if (wait_for((I915_READ(IPS_CTL) & IPS_ENABLE) == 0, 42))
+ DRM_ERROR("Timed out waiting for IPS disable\n");
+ } else {
+ I915_WRITE(IPS_CTL, 0);
+ POSTING_READ(IPS_CTL);
+ }
+
+ /* We need to wait for a vblank before we can disable the plane. */
+ intel_wait_for_vblank(dev, crtc->pipe);
+}
+
+/** Loads the palette/gamma unit for the CRTC with the prepared values */
+static void intel_crtc_load_lut(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum pipe pipe = intel_crtc->pipe;
+ int palreg = PALETTE(pipe);
+ int i;
+ bool reenable_ips = false;
+
+ /* The clocks have to be on to load the palette. */
+ if (!crtc->state->enable || !intel_crtc->active)
+ return;
+
+ if (!HAS_PCH_SPLIT(dev_priv->dev)) {
+ if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI))
+ assert_dsi_pll_enabled(dev_priv);
+ else
+ assert_pll_enabled(dev_priv, pipe);
+ }
+
+ /* use legacy palette for Ironlake */
+ if (!HAS_GMCH_DISPLAY(dev))
+ palreg = LGC_PALETTE(pipe);
+
+ /* Workaround : Do not read or write the pipe palette/gamma data while
+ * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
+ */
+ if (IS_HASWELL(dev) && intel_crtc->config->ips_enabled &&
+ ((I915_READ(GAMMA_MODE(pipe)) & GAMMA_MODE_MODE_MASK) ==
+ GAMMA_MODE_MODE_SPLIT)) {
+ hsw_disable_ips(intel_crtc);
+ reenable_ips = true;
+ }
+
+ for (i = 0; i < 256; i++) {
+ I915_WRITE(palreg + 4 * i,
+ (intel_crtc->lut_r[i] << 16) |
+ (intel_crtc->lut_g[i] << 8) |
+ intel_crtc->lut_b[i]);
+ }
+
+ if (reenable_ips)
+ hsw_enable_ips(intel_crtc);
+}
+
+static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
+{
+ if (!enable && intel_crtc->overlay) {
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ mutex_lock(&dev->struct_mutex);
+ dev_priv->mm.interruptible = false;
+ (void) intel_overlay_switch_off(intel_crtc->overlay);
+ dev_priv->mm.interruptible = true;
+ mutex_unlock(&dev->struct_mutex);
+ }
+
+ /* Let userspace switch the overlay on again. In most cases userspace
+ * has to recompute where to put it anyway.
+ */
+}
+
+static void intel_crtc_enable_planes(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+
+ intel_enable_primary_hw_plane(crtc->primary, crtc);
+ intel_enable_sprite_planes(crtc);
+ intel_crtc_update_cursor(crtc, true);
+ intel_crtc_dpms_overlay(intel_crtc, true);
+
+ hsw_enable_ips(intel_crtc);
+
+ mutex_lock(&dev->struct_mutex);
+ intel_fbc_update(dev);
+ mutex_unlock(&dev->struct_mutex);
+
+ /*
+ * FIXME: Once we grow proper nuclear flip support out of this we need
+ * to compute the mask of flip planes precisely. For the time being
+ * consider this a flip from a NULL plane.
+ */
+ intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
+}
+
+static void intel_crtc_disable_planes(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+
+ intel_crtc_wait_for_pending_flips(crtc);
+
+ if (dev_priv->fbc.crtc == intel_crtc)
+ intel_fbc_disable(dev);
+
+ hsw_disable_ips(intel_crtc);
+
+ intel_crtc_dpms_overlay(intel_crtc, false);
+ intel_crtc_update_cursor(crtc, false);
+ intel_disable_sprite_planes(crtc);
+ intel_disable_primary_hw_plane(crtc->primary, crtc);
+
+ /*
+ * FIXME: Once we grow proper nuclear flip support out of this we need
+ * to compute the mask of flip planes precisely. For the time being
+ * consider this a flip to a NULL plane.
+ */
+ intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
+}
+
+static void ironlake_crtc_enable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_encoder *encoder;
+ int pipe = intel_crtc->pipe;
+
+ WARN_ON(!crtc->state->enable);
+
+ if (intel_crtc->active)
+ return;
+
+ if (intel_crtc->config->has_pch_encoder)
+ intel_prepare_shared_dpll(intel_crtc);
+
+ if (intel_crtc->config->has_dp_encoder)
+ intel_dp_set_m_n(intel_crtc, M1_N1);
+
+ intel_set_pipe_timings(intel_crtc);
+
+ if (intel_crtc->config->has_pch_encoder) {
+ intel_cpu_transcoder_set_m_n(intel_crtc,
+ &intel_crtc->config->fdi_m_n, NULL);
+ }
+
+ ironlake_set_pipeconf(crtc);
+
+ intel_crtc->active = true;
+
+ intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+ intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->pre_enable)
+ encoder->pre_enable(encoder);
+
+ if (intel_crtc->config->has_pch_encoder) {
+ /* Note: FDI PLL enabling _must_ be done before we enable the
+ * cpu pipes, hence this is separate from all the other fdi/pch
+ * enabling. */
+ ironlake_fdi_pll_enable(intel_crtc);
+ } else {
+ assert_fdi_tx_disabled(dev_priv, pipe);
+ assert_fdi_rx_disabled(dev_priv, pipe);
+ }
+
+ ironlake_pfit_enable(intel_crtc);
+
+ /*
+ * On ILK+ LUT must be loaded before the pipe is running but with
+ * clocks enabled
+ */
+ intel_crtc_load_lut(crtc);
+
+ intel_update_watermarks(crtc);
+ intel_enable_pipe(intel_crtc);
+
+ if (intel_crtc->config->has_pch_encoder)
+ ironlake_pch_enable(crtc);
+
+ assert_vblank_disabled(crtc);
+ drm_crtc_vblank_on(crtc);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ encoder->enable(encoder);
+
+ if (HAS_PCH_CPT(dev))
+ cpt_verify_modeset(dev, intel_crtc->pipe);
+
+ intel_crtc_enable_planes(crtc);
+}
+
+/* IPS only exists on ULT machines and is tied to pipe A. */
+static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
+{
+ return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A;
+}
+
+/*
+ * This implements the workaround described in the "notes" section of the mode
+ * set sequence documentation. When going from no pipes or single pipe to
+ * multiple pipes, and planes are enabled after the pipe, we need to wait at
+ * least 2 vblanks on the first pipe before enabling planes on the second pipe.
+ */
+static void haswell_mode_set_planes_workaround(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct intel_crtc *crtc_it, *other_active_crtc = NULL;
+
+ /* We want to get the other_active_crtc only if there's only 1 other
+ * active crtc. */
+ for_each_intel_crtc(dev, crtc_it) {
+ if (!crtc_it->active || crtc_it == crtc)
+ continue;
+
+ if (other_active_crtc)
+ return;
+
+ other_active_crtc = crtc_it;
+ }
+ if (!other_active_crtc)
+ return;
+
+ intel_wait_for_vblank(dev, other_active_crtc->pipe);
+ intel_wait_for_vblank(dev, other_active_crtc->pipe);
+}
+
+static void haswell_crtc_enable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_encoder *encoder;
+ int pipe = intel_crtc->pipe;
+
+ WARN_ON(!crtc->state->enable);
+
+ if (intel_crtc->active)
+ return;
+
+ if (intel_crtc_to_shared_dpll(intel_crtc))
+ intel_enable_shared_dpll(intel_crtc);
+
+ if (intel_crtc->config->has_dp_encoder)
+ intel_dp_set_m_n(intel_crtc, M1_N1);
+
+ intel_set_pipe_timings(intel_crtc);
+
+ if (intel_crtc->config->cpu_transcoder != TRANSCODER_EDP) {
+ I915_WRITE(PIPE_MULT(intel_crtc->config->cpu_transcoder),
+ intel_crtc->config->pixel_multiplier - 1);
+ }
+
+ if (intel_crtc->config->has_pch_encoder) {
+ intel_cpu_transcoder_set_m_n(intel_crtc,
+ &intel_crtc->config->fdi_m_n, NULL);
+ }
+
+ haswell_set_pipeconf(crtc);
+
+ intel_set_pipe_csc(crtc);
+
+ intel_crtc->active = true;
+
+ intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->pre_enable)
+ encoder->pre_enable(encoder);
+
+ if (intel_crtc->config->has_pch_encoder) {
+ intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
+ true);
+ dev_priv->display.fdi_link_train(crtc);
+ }
+
+ intel_ddi_enable_pipe_clock(intel_crtc);
+
+ if (IS_SKYLAKE(dev))
+ skylake_pfit_enable(intel_crtc);
+ else
+ ironlake_pfit_enable(intel_crtc);
+
+ /*
+ * On ILK+ LUT must be loaded before the pipe is running but with
+ * clocks enabled
+ */
+ intel_crtc_load_lut(crtc);
+
+ intel_ddi_set_pipe_settings(crtc);
+ intel_ddi_enable_transcoder_func(crtc);
+
+ intel_update_watermarks(crtc);
+ intel_enable_pipe(intel_crtc);
+
+ if (intel_crtc->config->has_pch_encoder)
+ lpt_pch_enable(crtc);
+
+ if (intel_crtc->config->dp_encoder_is_mst)
+ intel_ddi_set_vc_payload_alloc(crtc, true);
+
+ assert_vblank_disabled(crtc);
+ drm_crtc_vblank_on(crtc);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder) {
+ encoder->enable(encoder);
+ intel_opregion_notify_encoder(encoder, true);
+ }
+
+ /* If we change the relative order between pipe/planes enabling, we need
+ * to change the workaround. */
+ haswell_mode_set_planes_workaround(intel_crtc);
+ intel_crtc_enable_planes(crtc);
+}
+
+static void skylake_pfit_disable(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+
+ /* To avoid upsetting the power well on haswell only disable the pfit if
+ * it's in use. The hw state code will make sure we get this right. */
+ if (crtc->config->pch_pfit.enabled) {
+ I915_WRITE(PS_CTL(pipe), 0);
+ I915_WRITE(PS_WIN_POS(pipe), 0);
+ I915_WRITE(PS_WIN_SZ(pipe), 0);
+ }
+}
+
+static void ironlake_pfit_disable(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+
+ /* To avoid upsetting the power well on haswell only disable the pfit if
+ * it's in use. The hw state code will make sure we get this right. */
+ if (crtc->config->pch_pfit.enabled) {
+ I915_WRITE(PF_CTL(pipe), 0);
+ I915_WRITE(PF_WIN_POS(pipe), 0);
+ I915_WRITE(PF_WIN_SZ(pipe), 0);
+ }
+}
+
+static void ironlake_crtc_disable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_encoder *encoder;
+ int pipe = intel_crtc->pipe;
+ u32 reg, temp;
+
+ if (!intel_crtc->active)
+ return;
+
+ intel_crtc_disable_planes(crtc);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ encoder->disable(encoder);
+
+ drm_crtc_vblank_off(crtc);
+ assert_vblank_disabled(crtc);
+
+ if (intel_crtc->config->has_pch_encoder)
+ intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
+
+ intel_disable_pipe(intel_crtc);
+
+ ironlake_pfit_disable(intel_crtc);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->post_disable)
+ encoder->post_disable(encoder);
+
+ if (intel_crtc->config->has_pch_encoder) {
+ ironlake_fdi_disable(crtc);
+
+ ironlake_disable_pch_transcoder(dev_priv, pipe);
+
+ if (HAS_PCH_CPT(dev)) {
+ /* disable TRANS_DP_CTL */
+ reg = TRANS_DP_CTL(pipe);
+ temp = I915_READ(reg);
+ temp &= ~(TRANS_DP_OUTPUT_ENABLE |
+ TRANS_DP_PORT_SEL_MASK);
+ temp |= TRANS_DP_PORT_SEL_NONE;
+ I915_WRITE(reg, temp);
+
+ /* disable DPLL_SEL */
+ temp = I915_READ(PCH_DPLL_SEL);
+ temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
+ I915_WRITE(PCH_DPLL_SEL, temp);
+ }
+
+ /* disable PCH DPLL */
+ intel_disable_shared_dpll(intel_crtc);
+
+ ironlake_fdi_pll_disable(intel_crtc);
+ }
+
+ intel_crtc->active = false;
+ intel_update_watermarks(crtc);
+
+ mutex_lock(&dev->struct_mutex);
+ intel_fbc_update(dev);
+ mutex_unlock(&dev->struct_mutex);
+}
+
+static void haswell_crtc_disable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_encoder *encoder;
+ enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+
+ if (!intel_crtc->active)
+ return;
+
+ intel_crtc_disable_planes(crtc);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder) {
+ intel_opregion_notify_encoder(encoder, false);
+ encoder->disable(encoder);
+ }
+
+ drm_crtc_vblank_off(crtc);
+ assert_vblank_disabled(crtc);
+
+ if (intel_crtc->config->has_pch_encoder)
+ intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
+ false);
+ intel_disable_pipe(intel_crtc);
+
+ if (intel_crtc->config->dp_encoder_is_mst)
+ intel_ddi_set_vc_payload_alloc(crtc, false);
+
+ intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
+
+ if (IS_SKYLAKE(dev))
+ skylake_pfit_disable(intel_crtc);
+ else
+ ironlake_pfit_disable(intel_crtc);
+
+ intel_ddi_disable_pipe_clock(intel_crtc);
+
+ if (intel_crtc->config->has_pch_encoder) {
+ lpt_disable_pch_transcoder(dev_priv);
+ intel_ddi_fdi_disable(crtc);
+ }
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->post_disable)
+ encoder->post_disable(encoder);
+
+ intel_crtc->active = false;
+ intel_update_watermarks(crtc);
+
+ mutex_lock(&dev->struct_mutex);
+ intel_fbc_update(dev);
+ mutex_unlock(&dev->struct_mutex);
+
+ if (intel_crtc_to_shared_dpll(intel_crtc))
+ intel_disable_shared_dpll(intel_crtc);
+}
+
+static void ironlake_crtc_off(struct drm_crtc *crtc)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ intel_put_shared_dpll(intel_crtc);
+}
+
+
+static void i9xx_pfit_enable(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc_state *pipe_config = crtc->config;
+
+ if (!pipe_config->gmch_pfit.control)
+ return;
+
+ /*
+ * The panel fitter should only be adjusted whilst the pipe is disabled,
+ * according to register description and PRM.
+ */
+ WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
+ assert_pipe_disabled(dev_priv, crtc->pipe);
+
+ I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios);
+ I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control);
+
+ /* Border color in case we don't scale up to the full screen. Black by
+ * default, change to something else for debugging. */
+ I915_WRITE(BCLRPAT(crtc->pipe), 0);
+}
+
+static enum intel_display_power_domain port_to_power_domain(enum port port)
+{
+ switch (port) {
+ case PORT_A:
+ return POWER_DOMAIN_PORT_DDI_A_4_LANES;
+ case PORT_B:
+ return POWER_DOMAIN_PORT_DDI_B_4_LANES;
+ case PORT_C:
+ return POWER_DOMAIN_PORT_DDI_C_4_LANES;
+ case PORT_D:
+ return POWER_DOMAIN_PORT_DDI_D_4_LANES;
+ default:
+ WARN_ON_ONCE(1);
+ return POWER_DOMAIN_PORT_OTHER;
+ }
+}
+
+#define for_each_power_domain(domain, mask) \
+ for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
+ if ((1 << (domain)) & (mask))
+
+enum intel_display_power_domain
+intel_display_port_power_domain(struct intel_encoder *intel_encoder)
+{
+ struct drm_device *dev = intel_encoder->base.dev;
+ struct intel_digital_port *intel_dig_port;
+
+ switch (intel_encoder->type) {
+ case INTEL_OUTPUT_UNKNOWN:
+ /* Only DDI platforms should ever use this output type */
+ WARN_ON_ONCE(!HAS_DDI(dev));
+ case INTEL_OUTPUT_DISPLAYPORT:
+ case INTEL_OUTPUT_HDMI:
+ case INTEL_OUTPUT_EDP:
+ intel_dig_port = enc_to_dig_port(&intel_encoder->base);
+ return port_to_power_domain(intel_dig_port->port);
+ case INTEL_OUTPUT_DP_MST:
+ intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
+ return port_to_power_domain(intel_dig_port->port);
+ case INTEL_OUTPUT_ANALOG:
+ return POWER_DOMAIN_PORT_CRT;
+ case INTEL_OUTPUT_DSI:
+ return POWER_DOMAIN_PORT_DSI;
+ default:
+ return POWER_DOMAIN_PORT_OTHER;
+ }
+}
+
+static unsigned long get_crtc_power_domains(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct intel_encoder *intel_encoder;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum pipe pipe = intel_crtc->pipe;
+ unsigned long mask;
+ enum transcoder transcoder;
+
+ transcoder = intel_pipe_to_cpu_transcoder(dev->dev_private, pipe);
+
+ mask = BIT(POWER_DOMAIN_PIPE(pipe));
+ mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder));
+ if (intel_crtc->config->pch_pfit.enabled ||
+ intel_crtc->config->pch_pfit.force_thru)
+ mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
+
+ for_each_encoder_on_crtc(dev, crtc, intel_encoder)
+ mask |= BIT(intel_display_port_power_domain(intel_encoder));
+
+ return mask;
+}
+
+static void modeset_update_crtc_power_domains(struct drm_atomic_state *state)
+{
+ struct drm_device *dev = state->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ unsigned long pipe_domains[I915_MAX_PIPES] = { 0, };
+ struct intel_crtc *crtc;
+
+ /*
+ * First get all needed power domains, then put all unneeded, to avoid
+ * any unnecessary toggling of the power wells.
+ */
+ for_each_intel_crtc(dev, crtc) {
+ enum intel_display_power_domain domain;
+
+ if (!crtc->base.state->enable)
+ continue;
+
+ pipe_domains[crtc->pipe] = get_crtc_power_domains(&crtc->base);
+
+ for_each_power_domain(domain, pipe_domains[crtc->pipe])
+ intel_display_power_get(dev_priv, domain);
+ }
+
+ if (dev_priv->display.modeset_global_resources)
+ dev_priv->display.modeset_global_resources(state);
+
+ for_each_intel_crtc(dev, crtc) {
+ enum intel_display_power_domain domain;
+
+ for_each_power_domain(domain, crtc->enabled_power_domains)
+ intel_display_power_put(dev_priv, domain);
+
+ crtc->enabled_power_domains = pipe_domains[crtc->pipe];
+ }
+
+ intel_display_set_init_power(dev_priv, false);
+}
+
+/* returns HPLL frequency in kHz */
+static int valleyview_get_vco(struct drm_i915_private *dev_priv)
+{
+ int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
+
+ /* Obtain SKU information */
+ mutex_lock(&dev_priv->dpio_lock);
+ hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
+ CCK_FUSE_HPLL_FREQ_MASK;
+ mutex_unlock(&dev_priv->dpio_lock);
+
+ return vco_freq[hpll_freq] * 1000;
+}
+
+static void vlv_update_cdclk(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ dev_priv->vlv_cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
+ DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
+ dev_priv->vlv_cdclk_freq);
+
+ /*
+ * Program the gmbus_freq based on the cdclk frequency.
+ * BSpec erroneously claims we should aim for 4MHz, but
+ * in fact 1MHz is the correct frequency.
+ */
+ I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->vlv_cdclk_freq, 1000));
+}
+
+/* Adjust CDclk dividers to allow high res or save power if possible */
+static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 val, cmd;
+
+ WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->vlv_cdclk_freq);
+
+ if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
+ cmd = 2;
+ else if (cdclk == 266667)
+ cmd = 1;
+ else
+ cmd = 0;
+
+ mutex_lock(&dev_priv->rps.hw_lock);
+ val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
+ val &= ~DSPFREQGUAR_MASK;
+ val |= (cmd << DSPFREQGUAR_SHIFT);
+ vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
+ if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
+ DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
+ 50)) {
+ DRM_ERROR("timed out waiting for CDclk change\n");
+ }
+ mutex_unlock(&dev_priv->rps.hw_lock);
+
+ if (cdclk == 400000) {
+ u32 divider;
+
+ divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
+
+ mutex_lock(&dev_priv->dpio_lock);
+ /* adjust cdclk divider */
+ val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
+ val &= ~DISPLAY_FREQUENCY_VALUES;
+ val |= divider;
+ vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
+
+ if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
+ DISPLAY_FREQUENCY_STATUS) == (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
+ 50))
+ DRM_ERROR("timed out waiting for CDclk change\n");
+ mutex_unlock(&dev_priv->dpio_lock);
+ }
+
+ mutex_lock(&dev_priv->dpio_lock);
+ /* adjust self-refresh exit latency value */
+ val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
+ val &= ~0x7f;
+
+ /*
+ * For high bandwidth configs, we set a higher latency in the bunit
+ * so that the core display fetch happens in time to avoid underruns.
+ */
+ if (cdclk == 400000)
+ val |= 4500 / 250; /* 4.5 usec */
+ else
+ val |= 3000 / 250; /* 3.0 usec */
+ vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
+ mutex_unlock(&dev_priv->dpio_lock);
+
+ vlv_update_cdclk(dev);
+}
+
+static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 val, cmd;
+
+ WARN_ON(dev_priv->display.get_display_clock_speed(dev) != dev_priv->vlv_cdclk_freq);
+
+ switch (cdclk) {
+ case 333333:
+ case 320000:
+ case 266667:
+ case 200000:
+ break;
+ default:
+ MISSING_CASE(cdclk);
+ return;
+ }
+
+ /*
+ * Specs are full of misinformation, but testing on actual
+ * hardware has shown that we just need to write the desired
+ * CCK divider into the Punit register.
+ */
+ cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
+
+ mutex_lock(&dev_priv->rps.hw_lock);
+ val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
+ val &= ~DSPFREQGUAR_MASK_CHV;
+ val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
+ vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
+ if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
+ DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
+ 50)) {
+ DRM_ERROR("timed out waiting for CDclk change\n");
+ }
+ mutex_unlock(&dev_priv->rps.hw_lock);
+
+ vlv_update_cdclk(dev);
+}
+
+static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
+ int max_pixclk)
+{
+ int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000;
+ int limit = IS_CHERRYVIEW(dev_priv) ? 95 : 90;
+
+ /*
+ * Really only a few cases to deal with, as only 4 CDclks are supported:
+ * 200MHz
+ * 267MHz
+ * 320/333MHz (depends on HPLL freq)
+ * 400MHz (VLV only)
+ * So we check to see whether we're above 90% (VLV) or 95% (CHV)
+ * of the lower bin and adjust if needed.
+ *
+ * We seem to get an unstable or solid color picture at 200MHz.
+ * Not sure what's wrong. For now use 200MHz only when all pipes
+ * are off.
+ */
+ if (!IS_CHERRYVIEW(dev_priv) &&
+ max_pixclk > freq_320*limit/100)
+ return 400000;
+ else if (max_pixclk > 266667*limit/100)
+ return freq_320;
+ else if (max_pixclk > 0)
+ return 266667;
+ else
+ return 200000;
+}
+
+/* compute the max pixel clock for new configuration */
+static int intel_mode_max_pixclk(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct intel_crtc *intel_crtc;
+ int max_pixclk = 0;
+
+ for_each_intel_crtc(dev, intel_crtc) {
+ if (intel_crtc->new_enabled)
+ max_pixclk = max(max_pixclk,
+ intel_crtc->new_config->base.adjusted_mode.crtc_clock);
+ }
+
+ return max_pixclk;
+}
+
+static void valleyview_modeset_global_pipes(struct drm_device *dev,
+ unsigned *prepare_pipes)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc;
+ int max_pixclk = intel_mode_max_pixclk(dev_priv);
+
+ if (valleyview_calc_cdclk(dev_priv, max_pixclk) ==
+ dev_priv->vlv_cdclk_freq)
+ return;
+
+ /* disable/enable all currently active pipes while we change cdclk */
+ for_each_intel_crtc(dev, intel_crtc)
+ if (intel_crtc->base.state->enable)
+ *prepare_pipes |= (1 << intel_crtc->pipe);
+}
+
+static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
+{
+ unsigned int credits, default_credits;
+
+ if (IS_CHERRYVIEW(dev_priv))
+ default_credits = PFI_CREDIT(12);
+ else
+ default_credits = PFI_CREDIT(8);
+
+ if (DIV_ROUND_CLOSEST(dev_priv->vlv_cdclk_freq, 1000) >= dev_priv->rps.cz_freq) {
+ /* CHV suggested value is 31 or 63 */
+ if (IS_CHERRYVIEW(dev_priv))
+ credits = PFI_CREDIT_31;
+ else
+ credits = PFI_CREDIT(15);
+ } else {
+ credits = default_credits;
+ }
+
+ /*
+ * WA - write default credits before re-programming
+ * FIXME: should we also set the resend bit here?
+ */
+ I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
+ default_credits);
+
+ I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
+ credits | PFI_CREDIT_RESEND);
+
+ /*
+ * FIXME is this guaranteed to clear
+ * immediately or should we poll for it?
+ */
+ WARN_ON(I915_READ(GCI_CONTROL) & PFI_CREDIT_RESEND);
+}
+
+static void valleyview_modeset_global_resources(struct drm_atomic_state *state)
+{
+ struct drm_device *dev = state->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int max_pixclk = intel_mode_max_pixclk(dev_priv);
+ int req_cdclk = valleyview_calc_cdclk(dev_priv, max_pixclk);
+
+ if (req_cdclk != dev_priv->vlv_cdclk_freq) {
+ /*
+ * FIXME: We can end up here with all power domains off, yet
+ * with a CDCLK frequency other than the minimum. To account
+ * for this take the PIPE-A power domain, which covers the HW
+ * blocks needed for the following programming. This can be
+ * removed once it's guaranteed that we get here either with
+ * the minimum CDCLK set, or the required power domains
+ * enabled.
+ */
+ intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
+
+ if (IS_CHERRYVIEW(dev))
+ cherryview_set_cdclk(dev, req_cdclk);
+ else
+ valleyview_set_cdclk(dev, req_cdclk);
+
+ vlv_program_pfi_credits(dev_priv);
+
+ intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A);
+ }
+}
+
+static void valleyview_crtc_enable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_encoder *encoder;
+ int pipe = intel_crtc->pipe;
+ bool is_dsi;
+
+ WARN_ON(!crtc->state->enable);
+
+ if (intel_crtc->active)
+ return;
+
+ is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
+
+ if (!is_dsi) {
+ if (IS_CHERRYVIEW(dev))
+ chv_prepare_pll(intel_crtc, intel_crtc->config);
+ else
+ vlv_prepare_pll(intel_crtc, intel_crtc->config);
+ }
+
+ if (intel_crtc->config->has_dp_encoder)
+ intel_dp_set_m_n(intel_crtc, M1_N1);
+
+ intel_set_pipe_timings(intel_crtc);
+
+ if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) {
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
+ I915_WRITE(CHV_CANVAS(pipe), 0);
+ }
+
+ i9xx_set_pipeconf(intel_crtc);
+
+ intel_crtc->active = true;
+
+ intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->pre_pll_enable)
+ encoder->pre_pll_enable(encoder);
+
+ if (!is_dsi) {
+ if (IS_CHERRYVIEW(dev))
+ chv_enable_pll(intel_crtc, intel_crtc->config);
+ else
+ vlv_enable_pll(intel_crtc, intel_crtc->config);
+ }
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->pre_enable)
+ encoder->pre_enable(encoder);
+
+ i9xx_pfit_enable(intel_crtc);
+
+ intel_crtc_load_lut(crtc);
+
+ intel_update_watermarks(crtc);
+ intel_enable_pipe(intel_crtc);
+
+ assert_vblank_disabled(crtc);
+ drm_crtc_vblank_on(crtc);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ encoder->enable(encoder);
+
+ intel_crtc_enable_planes(crtc);
+
+ /* Underruns don't raise interrupts, so check manually. */
+ i9xx_check_fifo_underruns(dev_priv);
+}
+
+static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0);
+ I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1);
+}
+
+static void i9xx_crtc_enable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_encoder *encoder;
+ int pipe = intel_crtc->pipe;
+
+ WARN_ON(!crtc->state->enable);
+
+ if (intel_crtc->active)
+ return;
+
+ i9xx_set_pll_dividers(intel_crtc);
+
+ if (intel_crtc->config->has_dp_encoder)
+ intel_dp_set_m_n(intel_crtc, M1_N1);
+
+ intel_set_pipe_timings(intel_crtc);
+
+ i9xx_set_pipeconf(intel_crtc);
+
+ intel_crtc->active = true;
+
+ if (!IS_GEN2(dev))
+ intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->pre_enable)
+ encoder->pre_enable(encoder);
+
+ i9xx_enable_pll(intel_crtc);
+
+ i9xx_pfit_enable(intel_crtc);
+
+ intel_crtc_load_lut(crtc);
+
+ intel_update_watermarks(crtc);
+ intel_enable_pipe(intel_crtc);
+
+ assert_vblank_disabled(crtc);
+ drm_crtc_vblank_on(crtc);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ encoder->enable(encoder);
+
+ intel_crtc_enable_planes(crtc);
+
+ /*
+ * Gen2 reports pipe underruns whenever all planes are disabled.
+ * So don't enable underrun reporting before at least some planes
+ * are enabled.
+ * FIXME: Need to fix the logic to work when we turn off all planes
+ * but leave the pipe running.
+ */
+ if (IS_GEN2(dev))
+ intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
+
+ /* Underruns don't raise interrupts, so check manually. */
+ i9xx_check_fifo_underruns(dev_priv);
+}
+
+static void i9xx_pfit_disable(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!crtc->config->gmch_pfit.control)
+ return;
+
+ assert_pipe_disabled(dev_priv, crtc->pipe);
+
+ DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n",
+ I915_READ(PFIT_CONTROL));
+ I915_WRITE(PFIT_CONTROL, 0);
+}
+
+static void i9xx_crtc_disable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_encoder *encoder;
+ int pipe = intel_crtc->pipe;
+
+ if (!intel_crtc->active)
+ return;
+
+ /*
+ * Gen2 reports pipe underruns whenever all planes are disabled.
+ * So diasble underrun reporting before all the planes get disabled.
+ * FIXME: Need to fix the logic to work when we turn off all planes
+ * but leave the pipe running.
+ */
+ if (IS_GEN2(dev))
+ intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
+
+ /*
+ * Vblank time updates from the shadow to live plane control register
+ * are blocked if the memory self-refresh mode is active at that
+ * moment. So to make sure the plane gets truly disabled, disable
+ * first the self-refresh mode. The self-refresh enable bit in turn
+ * will be checked/applied by the HW only at the next frame start
+ * event which is after the vblank start event, so we need to have a
+ * wait-for-vblank between disabling the plane and the pipe.
+ */
+ intel_set_memory_cxsr(dev_priv, false);
+ intel_crtc_disable_planes(crtc);
+
+ /*
+ * On gen2 planes are double buffered but the pipe isn't, so we must
+ * wait for planes to fully turn off before disabling the pipe.
+ * We also need to wait on all gmch platforms because of the
+ * self-refresh mode constraint explained above.
+ */
+ intel_wait_for_vblank(dev, pipe);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ encoder->disable(encoder);
+
+ drm_crtc_vblank_off(crtc);
+ assert_vblank_disabled(crtc);
+
+ intel_disable_pipe(intel_crtc);
+
+ i9xx_pfit_disable(intel_crtc);
+
+ for_each_encoder_on_crtc(dev, crtc, encoder)
+ if (encoder->post_disable)
+ encoder->post_disable(encoder);
+
+ if (!intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI)) {
+ if (IS_CHERRYVIEW(dev))
+ chv_disable_pll(dev_priv, pipe);
+ else if (IS_VALLEYVIEW(dev))
+ vlv_disable_pll(dev_priv, pipe);
+ else
+ i9xx_disable_pll(intel_crtc);
+ }
+
+ if (!IS_GEN2(dev))
+ intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
+
+ intel_crtc->active = false;
+ intel_update_watermarks(crtc);
+
+ mutex_lock(&dev->struct_mutex);
+ intel_fbc_update(dev);
+ mutex_unlock(&dev->struct_mutex);
+}
+
+static void i9xx_crtc_off(struct drm_crtc *crtc)
+{
+}
+
+/* Master function to enable/disable CRTC and corresponding power wells */
+void intel_crtc_control(struct drm_crtc *crtc, bool enable)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum intel_display_power_domain domain;
+ unsigned long domains;
+
+ if (enable) {
+ if (!intel_crtc->active) {
+ domains = get_crtc_power_domains(crtc);
+ for_each_power_domain(domain, domains)
+ intel_display_power_get(dev_priv, domain);
+ intel_crtc->enabled_power_domains = domains;
+
+ dev_priv->display.crtc_enable(crtc);
+ }
+ } else {
+ if (intel_crtc->active) {
+ dev_priv->display.crtc_disable(crtc);
+
+ domains = intel_crtc->enabled_power_domains;
+ for_each_power_domain(domain, domains)
+ intel_display_power_put(dev_priv, domain);
+ intel_crtc->enabled_power_domains = 0;
+ }
+ }
+}
+
+/**
+ * Sets the power management mode of the pipe and plane.
+ */
+void intel_crtc_update_dpms(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct intel_encoder *intel_encoder;
+ bool enable = false;
+
+ for_each_encoder_on_crtc(dev, crtc, intel_encoder)
+ enable |= intel_encoder->connectors_active;
+
+ intel_crtc_control(crtc, enable);
+}
+
+static void intel_crtc_disable(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_connector *connector;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ /* crtc should still be enabled when we disable it. */
+ WARN_ON(!crtc->state->enable);
+
+ dev_priv->display.crtc_disable(crtc);
+ dev_priv->display.off(crtc);
+
+ crtc->primary->funcs->disable_plane(crtc->primary);
+
+ /* Update computed state. */
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (!connector->encoder || !connector->encoder->crtc)
+ continue;
+
+ if (connector->encoder->crtc != crtc)
+ continue;
+
+ connector->dpms = DRM_MODE_DPMS_OFF;
+ to_intel_encoder(connector->encoder)->connectors_active = false;
+ }
+}
+
+void intel_encoder_destroy(struct drm_encoder *encoder)
+{
+ struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
+
+ drm_encoder_cleanup(encoder);
+ kfree(intel_encoder);
+}
+
+/* Simple dpms helper for encoders with just one connector, no cloning and only
+ * one kind of off state. It clamps all !ON modes to fully OFF and changes the
+ * state of the entire output pipe. */
+static void intel_encoder_dpms(struct intel_encoder *encoder, int mode)
+{
+ if (mode == DRM_MODE_DPMS_ON) {
+ encoder->connectors_active = true;
+
+ intel_crtc_update_dpms(encoder->base.crtc);
+ } else {
+ encoder->connectors_active = false;
+
+ intel_crtc_update_dpms(encoder->base.crtc);
+ }
+}
+
+/* Cross check the actual hw state with our own modeset state tracking (and it's
+ * internal consistency). */
+static void intel_connector_check_state(struct intel_connector *connector)
+{
+ if (connector->get_hw_state(connector)) {
+ struct intel_encoder *encoder = connector->encoder;
+ struct drm_crtc *crtc;
+ bool encoder_enabled;
+ enum pipe pipe;
+
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
+ connector->base.base.id,
+ connector->base.name);
+
+ /* there is no real hw state for MST connectors */
+ if (connector->mst_port)
+ return;
+
+ I915_STATE_WARN(connector->base.dpms == DRM_MODE_DPMS_OFF,
+ "wrong connector dpms state\n");
+ I915_STATE_WARN(connector->base.encoder != &encoder->base,
+ "active connector not linked to encoder\n");
+
+ if (encoder) {
+ I915_STATE_WARN(!encoder->connectors_active,
+ "encoder->connectors_active not set\n");
+
+ encoder_enabled = encoder->get_hw_state(encoder, &pipe);
+ I915_STATE_WARN(!encoder_enabled, "encoder not enabled\n");
+ if (I915_STATE_WARN_ON(!encoder->base.crtc))
+ return;
+
+ crtc = encoder->base.crtc;
+
+ I915_STATE_WARN(!crtc->state->enable,
+ "crtc not enabled\n");
+ I915_STATE_WARN(!to_intel_crtc(crtc)->active, "crtc not active\n");
+ I915_STATE_WARN(pipe != to_intel_crtc(crtc)->pipe,
+ "encoder active on the wrong pipe\n");
+ }
+ }
+}
+
+int intel_connector_init(struct intel_connector *connector)
+{
+ struct drm_connector_state *connector_state;
+
+ connector_state = kzalloc(sizeof *connector_state, GFP_KERNEL);
+ if (!connector_state)
+ return -ENOMEM;
+
+ connector->base.state = connector_state;
+ return 0;
+}
+
+struct intel_connector *intel_connector_alloc(void)
+{
+ struct intel_connector *connector;
+
+ connector = kzalloc(sizeof *connector, GFP_KERNEL);
+ if (!connector)
+ return NULL;
+
+ if (intel_connector_init(connector) < 0) {
+ kfree(connector);
+ return NULL;
+ }
+
+ return connector;
+}
+
+/* Even simpler default implementation, if there's really no special case to
+ * consider. */
+void intel_connector_dpms(struct drm_connector *connector, int mode)
+{
+ /* All the simple cases only support two dpms states. */
+ if (mode != DRM_MODE_DPMS_ON)
+ mode = DRM_MODE_DPMS_OFF;
+
+ if (mode == connector->dpms)
+ return;
+
+ connector->dpms = mode;
+
+ /* Only need to change hw state when actually enabled */
+ if (connector->encoder)
+ intel_encoder_dpms(to_intel_encoder(connector->encoder), mode);
+
+ intel_modeset_check_state(connector->dev);
+}
+
+/* Simple connector->get_hw_state implementation for encoders that support only
+ * one connector and no cloning and hence the encoder state determines the state
+ * of the connector. */
+bool intel_connector_get_hw_state(struct intel_connector *connector)
+{
+ enum pipe pipe = 0;
+ struct intel_encoder *encoder = connector->encoder;
+
+ return encoder->get_hw_state(encoder, &pipe);
+}
+
+static int pipe_required_fdi_lanes(struct drm_device *dev, enum pipe pipe)
+{
+ struct intel_crtc *crtc =
+ to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
+
+ if (crtc->base.state->enable &&
+ crtc->config->has_pch_encoder)
+ return crtc->config->fdi_lanes;
+
+ return 0;
+}
+
+static bool ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
+ struct intel_crtc_state *pipe_config)
+{
+ DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
+ pipe_name(pipe), pipe_config->fdi_lanes);
+ if (pipe_config->fdi_lanes > 4) {
+ DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
+ pipe_name(pipe), pipe_config->fdi_lanes);
+ return false;
+ }
+
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+ if (pipe_config->fdi_lanes > 2) {
+ DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
+ pipe_config->fdi_lanes);
+ return false;
+ } else {
+ return true;
+ }
+ }
+
+ if (INTEL_INFO(dev)->num_pipes == 2)
+ return true;
+
+ /* Ivybridge 3 pipe is really complicated */
+ switch (pipe) {
+ case PIPE_A:
+ return true;
+ case PIPE_B:
+ if (pipe_config->fdi_lanes > 2 &&
+ pipe_required_fdi_lanes(dev, PIPE_C) > 0) {
+ DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
+ pipe_name(pipe), pipe_config->fdi_lanes);
+ return false;
+ }
+ return true;
+ case PIPE_C:
+ if (pipe_config->fdi_lanes > 2) {
+ DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
+ pipe_name(pipe), pipe_config->fdi_lanes);
+ return false;
+ }
+ if (pipe_required_fdi_lanes(dev, PIPE_B) > 2) {
+ DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
+ return false;
+ }
+ return true;
+ default:
+ BUG();
+ }
+}
+
+#define RETRY 1
+static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
+ int lane, link_bw, fdi_dotclock;
+ bool setup_ok, needs_recompute = false;
+
+retry:
+ /* FDI is a binary signal running at ~2.7GHz, encoding
+ * each output octet as 10 bits. The actual frequency
+ * is stored as a divider into a 100MHz clock, and the
+ * mode pixel clock is stored in units of 1KHz.
+ * Hence the bw of each lane in terms of the mode signal
+ * is:
+ */
+ link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
+
+ fdi_dotclock = adjusted_mode->crtc_clock;
+
+ lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
+ pipe_config->pipe_bpp);
+
+ pipe_config->fdi_lanes = lane;
+
+ intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
+ link_bw, &pipe_config->fdi_m_n);
+
+ setup_ok = ironlake_check_fdi_lanes(intel_crtc->base.dev,
+ intel_crtc->pipe, pipe_config);
+ if (!setup_ok && pipe_config->pipe_bpp > 6*3) {
+ pipe_config->pipe_bpp -= 2*3;
+ DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
+ pipe_config->pipe_bpp);
+ needs_recompute = true;
+ pipe_config->bw_constrained = true;
+
+ goto retry;
+ }
+
+ if (needs_recompute)
+ return RETRY;
+
+ return setup_ok ? 0 : -EINVAL;
+}
+
+static void hsw_compute_ips_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ pipe_config->ips_enabled = i915.enable_ips &&
+ hsw_crtc_supports_ips(crtc) &&
+ pipe_config->pipe_bpp <= 24;
+}
+
+static int intel_crtc_compute_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
+
+ /* FIXME should check pixel clock limits on all platforms */
+ if (INTEL_INFO(dev)->gen < 4) {
+ int clock_limit =
+ dev_priv->display.get_display_clock_speed(dev);
+
+ /*
+ * Enable pixel doubling when the dot clock
+ * is > 90% of the (display) core speed.
+ *
+ * GDG double wide on either pipe,
+ * otherwise pipe A only.
+ */
+ if ((crtc->pipe == PIPE_A || IS_I915G(dev)) &&
+ adjusted_mode->crtc_clock > clock_limit * 9 / 10) {
+ clock_limit *= 2;
+ pipe_config->double_wide = true;
+ }
+
+ if (adjusted_mode->crtc_clock > clock_limit * 9 / 10)
+ return -EINVAL;
+ }
+
+ /*
+ * Pipe horizontal size must be even in:
+ * - DVO ganged mode
+ * - LVDS dual channel mode
+ * - Double wide pipe
+ */
+ if ((intel_pipe_will_have_type(pipe_config, INTEL_OUTPUT_LVDS) &&
+ intel_is_dual_link_lvds(dev)) || pipe_config->double_wide)
+ pipe_config->pipe_src_w &= ~1;
+
+ /* Cantiga+ cannot handle modes with a hsync front porch of 0.
+ * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
+ */
+ if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
+ adjusted_mode->hsync_start == adjusted_mode->hdisplay)
+ return -EINVAL;
+
+ if ((IS_G4X(dev) || IS_VALLEYVIEW(dev)) && pipe_config->pipe_bpp > 10*3) {
+ pipe_config->pipe_bpp = 10*3; /* 12bpc is gen5+ */
+ } else if (INTEL_INFO(dev)->gen <= 4 && pipe_config->pipe_bpp > 8*3) {
+ /* only a 8bpc pipe, with 6bpc dither through the panel fitter
+ * for lvds. */
+ pipe_config->pipe_bpp = 8*3;
+ }
+
+ if (HAS_IPS(dev))
+ hsw_compute_ips_config(crtc, pipe_config);
+
+ if (pipe_config->has_pch_encoder)
+ return ironlake_fdi_compute_config(crtc, pipe_config);
+
+ return 0;
+}
+
+static int valleyview_get_display_clock_speed(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 val;
+ int divider;
+
+ if (dev_priv->hpll_freq == 0)
+ dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
+
+ mutex_lock(&dev_priv->dpio_lock);
+ val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
+ mutex_unlock(&dev_priv->dpio_lock);
+
+ divider = val & DISPLAY_FREQUENCY_VALUES;
+
+ WARN((val & DISPLAY_FREQUENCY_STATUS) !=
+ (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
+ "cdclk change in progress\n");
+
+ return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, divider + 1);
+}
+
+static int i945_get_display_clock_speed(struct drm_device *dev)
+{
+ return 400000;
+}
+
+static int i915_get_display_clock_speed(struct drm_device *dev)
+{
+ return 333000;
+}
+
+static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
+{
+ return 200000;
+}
+
+static int pnv_get_display_clock_speed(struct drm_device *dev)
+{
+ u16 gcfgc = 0;
+
+ pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
+
+ switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
+ case GC_DISPLAY_CLOCK_267_MHZ_PNV:
+ return 267000;
+ case GC_DISPLAY_CLOCK_333_MHZ_PNV:
+ return 333000;
+ case GC_DISPLAY_CLOCK_444_MHZ_PNV:
+ return 444000;
+ case GC_DISPLAY_CLOCK_200_MHZ_PNV:
+ return 200000;
+ default:
+ DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc);
+ case GC_DISPLAY_CLOCK_133_MHZ_PNV:
+ return 133000;
+ case GC_DISPLAY_CLOCK_167_MHZ_PNV:
+ return 167000;
+ }
+}
+
+static int i915gm_get_display_clock_speed(struct drm_device *dev)
+{
+ u16 gcfgc = 0;
+
+ pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
+
+ if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
+ return 133000;
+ else {
+ switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
+ case GC_DISPLAY_CLOCK_333_MHZ:
+ return 333000;
+ default:
+ case GC_DISPLAY_CLOCK_190_200_MHZ:
+ return 190000;
+ }
+ }
+}
+
+static int i865_get_display_clock_speed(struct drm_device *dev)
+{
+ return 266000;
+}
+
+static int i855_get_display_clock_speed(struct drm_device *dev)
+{
+ u16 hpllcc = 0;
+ /* Assume that the hardware is in the high speed state. This
+ * should be the default.
+ */
+ switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
+ case GC_CLOCK_133_200:
+ case GC_CLOCK_100_200:
+ return 200000;
+ case GC_CLOCK_166_250:
+ return 250000;
+ case GC_CLOCK_100_133:
+ return 133000;
+ }
+
+ /* Shouldn't happen */
+ return 0;
+}
+
+static int i830_get_display_clock_speed(struct drm_device *dev)
+{
+ return 133000;
+}
+
+static void
+intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den)
+{
+ while (*num > DATA_LINK_M_N_MASK ||
+ *den > DATA_LINK_M_N_MASK) {
+ *num >>= 1;
+ *den >>= 1;
+ }
+}
+
+static void compute_m_n(unsigned int m, unsigned int n,
+ uint32_t *ret_m, uint32_t *ret_n)
+{
+ *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
+ *ret_m = div_u64((uint64_t) m * *ret_n, n);
+ intel_reduce_m_n_ratio(ret_m, ret_n);
+}
+
+void
+intel_link_compute_m_n(int bits_per_pixel, int nlanes,
+ int pixel_clock, int link_clock,
+ struct intel_link_m_n *m_n)
+{
+ m_n->tu = 64;
+
+ compute_m_n(bits_per_pixel * pixel_clock,
+ link_clock * nlanes * 8,
+ &m_n->gmch_m, &m_n->gmch_n);
+
+ compute_m_n(pixel_clock, link_clock,
+ &m_n->link_m, &m_n->link_n);
+}
+
+static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
+{
+ if (i915.panel_use_ssc >= 0)
+ return i915.panel_use_ssc != 0;
+ return dev_priv->vbt.lvds_use_ssc
+ && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
+}
+
+static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
+ int num_connectors)
+{
+ struct drm_device *dev = crtc_state->base.crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int refclk;
+
+ WARN_ON(!crtc_state->base.state);
+
+ if (IS_VALLEYVIEW(dev)) {
+ refclk = 100000;
+ } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
+ intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
+ refclk = dev_priv->vbt.lvds_ssc_freq;
+ DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
+ } else if (!IS_GEN2(dev)) {
+ refclk = 96000;
+ } else {
+ refclk = 48000;
+ }
+
+ return refclk;
+}
+
+static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
+{
+ return (1 << dpll->n) << 16 | dpll->m2;
+}
+
+static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
+{
+ return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
+}
+
+static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state,
+ intel_clock_t *reduced_clock)
+{
+ struct drm_device *dev = crtc->base.dev;
+ u32 fp, fp2 = 0;
+
+ if (IS_PINEVIEW(dev)) {
+ fp = pnv_dpll_compute_fp(&crtc_state->dpll);
+ if (reduced_clock)
+ fp2 = pnv_dpll_compute_fp(reduced_clock);
+ } else {
+ fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
+ if (reduced_clock)
+ fp2 = i9xx_dpll_compute_fp(reduced_clock);
+ }
+
+ crtc_state->dpll_hw_state.fp0 = fp;
+
+ crtc->lowfreq_avail = false;
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
+ reduced_clock) {
+ crtc_state->dpll_hw_state.fp1 = fp2;
+ crtc->lowfreq_avail = true;
+ } else {
+ crtc_state->dpll_hw_state.fp1 = fp;
+ }
+}
+
+static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
+ pipe)
+{
+ u32 reg_val;
+
+ /*
+ * PLLB opamp always calibrates to max value of 0x3f, force enable it
+ * and set it to a reasonable value instead.
+ */
+ reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
+ reg_val &= 0xffffff00;
+ reg_val |= 0x00000030;
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
+
+ reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
+ reg_val &= 0x8cffffff;
+ reg_val = 0x8c000000;
+ vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
+
+ reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
+ reg_val &= 0xffffff00;
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
+
+ reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
+ reg_val &= 0x00ffffff;
+ reg_val |= 0xb0000000;
+ vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
+}
+
+static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
+ struct intel_link_m_n *m_n)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+
+ I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
+ I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
+ I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
+ I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
+}
+
+static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
+ struct intel_link_m_n *m_n,
+ struct intel_link_m_n *m2_n2)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+ enum transcoder transcoder = crtc->config->cpu_transcoder;
+
+ if (INTEL_INFO(dev)->gen >= 5) {
+ I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
+ I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
+ I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
+ I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
+ /* M2_N2 registers to be set only for gen < 8 (M2_N2 available
+ * for gen < 8) and if DRRS is supported (to make sure the
+ * registers are not unnecessarily accessed).
+ */
+ if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) &&
+ crtc->config->has_drrs) {
+ I915_WRITE(PIPE_DATA_M2(transcoder),
+ TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
+ I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
+ I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
+ I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
+ }
+ } else {
+ I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
+ I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
+ I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
+ I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
+ }
+}
+
+void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n)
+{
+ struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
+
+ if (m_n == M1_N1) {
+ dp_m_n = &crtc->config->dp_m_n;
+ dp_m2_n2 = &crtc->config->dp_m2_n2;
+ } else if (m_n == M2_N2) {
+
+ /*
+ * M2_N2 registers are not supported. Hence m2_n2 divider value
+ * needs to be programmed into M1_N1.
+ */
+ dp_m_n = &crtc->config->dp_m2_n2;
+ } else {
+ DRM_ERROR("Unsupported divider value\n");
+ return;
+ }
+
+ if (crtc->config->has_pch_encoder)
+ intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n);
+ else
+ intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2);
+}
+
+static void vlv_update_pll(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ u32 dpll, dpll_md;
+
+ /*
+ * Enable DPIO clock input. We should never disable the reference
+ * clock for pipe B, since VGA hotplug / manual detection depends
+ * on it.
+ */
+ dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REFA_CLK_ENABLE_VLV |
+ DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_CLOCK_VLV;
+ /* We should never disable this, set it here for state tracking */
+ if (crtc->pipe == PIPE_B)
+ dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
+ dpll |= DPLL_VCO_ENABLE;
+ pipe_config->dpll_hw_state.dpll = dpll;
+
+ dpll_md = (pipe_config->pixel_multiplier - 1)
+ << DPLL_MD_UDI_MULTIPLIER_SHIFT;
+ pipe_config->dpll_hw_state.dpll_md = dpll_md;
+}
+
+static void vlv_prepare_pll(struct intel_crtc *crtc,
+ const struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+ u32 mdiv;
+ u32 bestn, bestm1, bestm2, bestp1, bestp2;
+ u32 coreclk, reg_val;
+
+ mutex_lock(&dev_priv->dpio_lock);
+
+ bestn = pipe_config->dpll.n;
+ bestm1 = pipe_config->dpll.m1;
+ bestm2 = pipe_config->dpll.m2;
+ bestp1 = pipe_config->dpll.p1;
+ bestp2 = pipe_config->dpll.p2;
+
+ /* See eDP HDMI DPIO driver vbios notes doc */
+
+ /* PLL B needs special handling */
+ if (pipe == PIPE_B)
+ vlv_pllb_recal_opamp(dev_priv, pipe);
+
+ /* Set up Tx target for periodic Rcomp update */
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
+
+ /* Disable target IRef on PLL */
+ reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
+ reg_val &= 0x00ffffff;
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
+
+ /* Disable fast lock */
+ vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
+
+ /* Set idtafcrecal before PLL is enabled */
+ mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
+ mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
+ mdiv |= ((bestn << DPIO_N_SHIFT));
+ mdiv |= (1 << DPIO_K_SHIFT);
+
+ /*
+ * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
+ * but we don't support that).
+ * Note: don't use the DAC post divider as it seems unstable.
+ */
+ mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
+
+ mdiv |= DPIO_ENABLE_CALIBRATION;
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
+
+ /* Set HBR and RBR LPF coefficients */
+ if (pipe_config->port_clock == 162000 ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
+ 0x009f0003);
+ else
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
+ 0x00d0000f);
+
+ if (pipe_config->has_dp_encoder) {
+ /* Use SSC source */
+ if (pipe == PIPE_A)
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+ 0x0df40000);
+ else
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+ 0x0df70000);
+ } else { /* HDMI or VGA */
+ /* Use bend source */
+ if (pipe == PIPE_A)
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+ 0x0df70000);
+ else
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
+ 0x0df40000);
+ }
+
+ coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
+ coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
+ coreclk |= 0x01000000;
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
+
+ vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
+ mutex_unlock(&dev_priv->dpio_lock);
+}
+
+static void chv_update_pll(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLOCK_CHV |
+ DPLL_REFA_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS |
+ DPLL_VCO_ENABLE;
+ if (crtc->pipe != PIPE_A)
+ pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
+
+ pipe_config->dpll_hw_state.dpll_md =
+ (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
+}
+
+static void chv_prepare_pll(struct intel_crtc *crtc,
+ const struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = crtc->pipe;
+ int dpll_reg = DPLL(crtc->pipe);
+ enum dpio_channel port = vlv_pipe_to_channel(pipe);
+ u32 loopfilter, tribuf_calcntr;
+ u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
+ u32 dpio_val;
+ int vco;
+
+ bestn = pipe_config->dpll.n;
+ bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
+ bestm1 = pipe_config->dpll.m1;
+ bestm2 = pipe_config->dpll.m2 >> 22;
+ bestp1 = pipe_config->dpll.p1;
+ bestp2 = pipe_config->dpll.p2;
+ vco = pipe_config->dpll.vco;
+ dpio_val = 0;
+ loopfilter = 0;
+
+ /*
+ * Enable Refclk and SSC
+ */
+ I915_WRITE(dpll_reg,
+ pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
+
+ mutex_lock(&dev_priv->dpio_lock);
+
+ /* p1 and p2 divider */
+ vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
+ 5 << DPIO_CHV_S1_DIV_SHIFT |
+ bestp1 << DPIO_CHV_P1_DIV_SHIFT |
+ bestp2 << DPIO_CHV_P2_DIV_SHIFT |
+ 1 << DPIO_CHV_K_DIV_SHIFT);
+
+ /* Feedback post-divider - m2 */
+ vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
+
+ /* Feedback refclk divider - n and m1 */
+ vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
+ DPIO_CHV_M1_DIV_BY_2 |
+ 1 << DPIO_CHV_N_DIV_SHIFT);
+
+ /* M2 fraction division */
+ if (bestm2_frac)
+ vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
+
+ /* M2 fraction division enable */
+ dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
+ dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
+ dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
+ if (bestm2_frac)
+ dpio_val |= DPIO_CHV_FRAC_DIV_EN;
+ vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
+
+ /* Program digital lock detect threshold */
+ dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
+ dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
+ DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
+ dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
+ if (!bestm2_frac)
+ dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
+ vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
+
+ /* Loop filter */
+ if (vco == 5400000) {
+ loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
+ loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
+ loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
+ tribuf_calcntr = 0x9;
+ } else if (vco <= 6200000) {
+ loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
+ loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
+ loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
+ tribuf_calcntr = 0x9;
+ } else if (vco <= 6480000) {
+ loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
+ loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
+ loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
+ tribuf_calcntr = 0x8;
+ } else {
+ /* Not supported. Apply the same limits as in the max case */
+ loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
+ loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
+ loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
+ tribuf_calcntr = 0;
+ }
+ vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
+
+ dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
+ dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
+ dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
+ vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
+
+ /* AFC Recal */
+ vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
+ vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
+ DPIO_AFC_RECAL);
+
+ mutex_unlock(&dev_priv->dpio_lock);
+}
+
+/**
+ * vlv_force_pll_on - forcibly enable just the PLL
+ * @dev_priv: i915 private structure
+ * @pipe: pipe PLL to enable
+ * @dpll: PLL configuration
+ *
+ * Enable the PLL for @pipe using the supplied @dpll config. To be used
+ * in cases where we need the PLL enabled even when @pipe is not going to
+ * be enabled.
+ */
+void vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
+ const struct dpll *dpll)
+{
+ struct intel_crtc *crtc =
+ to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
+ struct intel_crtc_state pipe_config = {
+ .base.crtc = &crtc->base,
+ .pixel_multiplier = 1,
+ .dpll = *dpll,
+ };
+
+ if (IS_CHERRYVIEW(dev)) {
+ chv_update_pll(crtc, &pipe_config);
+ chv_prepare_pll(crtc, &pipe_config);
+ chv_enable_pll(crtc, &pipe_config);
+ } else {
+ vlv_update_pll(crtc, &pipe_config);
+ vlv_prepare_pll(crtc, &pipe_config);
+ vlv_enable_pll(crtc, &pipe_config);
+ }
+}
+
+/**
+ * vlv_force_pll_off - forcibly disable just the PLL
+ * @dev_priv: i915 private structure
+ * @pipe: pipe PLL to disable
+ *
+ * Disable the PLL for @pipe. To be used in cases where we need
+ * the PLL enabled even when @pipe is not going to be enabled.
+ */
+void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe)
+{
+ if (IS_CHERRYVIEW(dev))
+ chv_disable_pll(to_i915(dev), pipe);
+ else
+ vlv_disable_pll(to_i915(dev), pipe);
+}
+
+static void i9xx_update_pll(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state,
+ intel_clock_t *reduced_clock,
+ int num_connectors)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dpll;
+ bool is_sdvo;
+ struct dpll *clock = &crtc_state->dpll;
+
+ i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
+
+ is_sdvo = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO) ||
+ intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI);
+
+ dpll = DPLL_VGA_MODE_DIS;
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
+ dpll |= DPLLB_MODE_LVDS;
+ else
+ dpll |= DPLLB_MODE_DAC_SERIAL;
+
+ if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
+ dpll |= (crtc_state->pixel_multiplier - 1)
+ << SDVO_MULTIPLIER_SHIFT_HIRES;
+ }
+
+ if (is_sdvo)
+ dpll |= DPLL_SDVO_HIGH_SPEED;
+
+ if (crtc_state->has_dp_encoder)
+ dpll |= DPLL_SDVO_HIGH_SPEED;
+
+ /* compute bitmask from p1 value */
+ if (IS_PINEVIEW(dev))
+ dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
+ else {
+ dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ if (IS_G4X(dev) && reduced_clock)
+ dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+ }
+ switch (clock->p2) {
+ case 5:
+ dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
+ break;
+ case 7:
+ dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
+ break;
+ case 10:
+ dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
+ break;
+ case 14:
+ dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
+ break;
+ }
+ if (INTEL_INFO(dev)->gen >= 4)
+ dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
+
+ if (crtc_state->sdvo_tv_clock)
+ dpll |= PLL_REF_INPUT_TVCLKINBC;
+ else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
+ intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+ dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+ else
+ dpll |= PLL_REF_INPUT_DREFCLK;
+
+ dpll |= DPLL_VCO_ENABLE;
+ crtc_state->dpll_hw_state.dpll = dpll;
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ u32 dpll_md = (crtc_state->pixel_multiplier - 1)
+ << DPLL_MD_UDI_MULTIPLIER_SHIFT;
+ crtc_state->dpll_hw_state.dpll_md = dpll_md;
+ }
+}
+
+static void i8xx_update_pll(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state,
+ intel_clock_t *reduced_clock,
+ int num_connectors)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dpll;
+ struct dpll *clock = &crtc_state->dpll;
+
+ i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
+
+ dpll = DPLL_VGA_MODE_DIS;
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
+ dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ } else {
+ if (clock->p1 == 2)
+ dpll |= PLL_P1_DIVIDE_BY_TWO;
+ else
+ dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ if (clock->p2 == 4)
+ dpll |= PLL_P2_DIVIDE_BY_4;
+ }
+
+ if (!IS_I830(dev) && intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
+ dpll |= DPLL_DVO_2X_MODE;
+
+ if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
+ intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+ dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+ else
+ dpll |= PLL_REF_INPUT_DREFCLK;
+
+ dpll |= DPLL_VCO_ENABLE;
+ crtc_state->dpll_hw_state.dpll = dpll;
+}
+
+static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe = intel_crtc->pipe;
+ enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+ struct drm_display_mode *adjusted_mode =
+ &intel_crtc->config->base.adjusted_mode;
+ uint32_t crtc_vtotal, crtc_vblank_end;
+ int vsyncshift = 0;
+
+ /* We need to be careful not to changed the adjusted mode, for otherwise
+ * the hw state checker will get angry at the mismatch. */
+ crtc_vtotal = adjusted_mode->crtc_vtotal;
+ crtc_vblank_end = adjusted_mode->crtc_vblank_end;
+
+ if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
+ /* the chip adds 2 halflines automatically */
+ crtc_vtotal -= 1;
+ crtc_vblank_end -= 1;
+
+ if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
+ vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
+ else
+ vsyncshift = adjusted_mode->crtc_hsync_start -
+ adjusted_mode->crtc_htotal / 2;
+ if (vsyncshift < 0)
+ vsyncshift += adjusted_mode->crtc_htotal;
+ }
+
+ if (INTEL_INFO(dev)->gen > 3)
+ I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
+
+ I915_WRITE(HTOTAL(cpu_transcoder),
+ (adjusted_mode->crtc_hdisplay - 1) |
+ ((adjusted_mode->crtc_htotal - 1) << 16));
+ I915_WRITE(HBLANK(cpu_transcoder),
+ (adjusted_mode->crtc_hblank_start - 1) |
+ ((adjusted_mode->crtc_hblank_end - 1) << 16));
+ I915_WRITE(HSYNC(cpu_transcoder),
+ (adjusted_mode->crtc_hsync_start - 1) |
+ ((adjusted_mode->crtc_hsync_end - 1) << 16));
+
+ I915_WRITE(VTOTAL(cpu_transcoder),
+ (adjusted_mode->crtc_vdisplay - 1) |
+ ((crtc_vtotal - 1) << 16));
+ I915_WRITE(VBLANK(cpu_transcoder),
+ (adjusted_mode->crtc_vblank_start - 1) |
+ ((crtc_vblank_end - 1) << 16));
+ I915_WRITE(VSYNC(cpu_transcoder),
+ (adjusted_mode->crtc_vsync_start - 1) |
+ ((adjusted_mode->crtc_vsync_end - 1) << 16));
+
+ /* Workaround: when the EDP input selection is B, the VTOTAL_B must be
+ * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
+ * documented on the DDI_FUNC_CTL register description, EDP Input Select
+ * bits. */
+ if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP &&
+ (pipe == PIPE_B || pipe == PIPE_C))
+ I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
+
+ /* pipesrc controls the size that is scaled from, which should
+ * always be the user's requested size.
+ */
+ I915_WRITE(PIPESRC(pipe),
+ ((intel_crtc->config->pipe_src_w - 1) << 16) |
+ (intel_crtc->config->pipe_src_h - 1));
+}
+
+static void intel_get_pipe_timings(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
+ uint32_t tmp;
+
+ tmp = I915_READ(HTOTAL(cpu_transcoder));
+ pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
+ pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
+ tmp = I915_READ(HBLANK(cpu_transcoder));
+ pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1;
+ pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1;
+ tmp = I915_READ(HSYNC(cpu_transcoder));
+ pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
+ pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
+
+ tmp = I915_READ(VTOTAL(cpu_transcoder));
+ pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
+ pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
+ tmp = I915_READ(VBLANK(cpu_transcoder));
+ pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1;
+ pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1;
+ tmp = I915_READ(VSYNC(cpu_transcoder));
+ pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
+ pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
+
+ if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
+ pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
+ pipe_config->base.adjusted_mode.crtc_vtotal += 1;
+ pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
+ }
+
+ tmp = I915_READ(PIPESRC(crtc->pipe));
+ pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
+ pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
+
+ pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
+ pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
+}
+
+void intel_mode_from_pipe_config(struct drm_display_mode *mode,
+ struct intel_crtc_state *pipe_config)
+{
+ mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
+ mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
+ mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
+ mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
+
+ mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
+ mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
+ mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
+ mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
+
+ mode->flags = pipe_config->base.adjusted_mode.flags;
+
+ mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
+ mode->flags |= pipe_config->base.adjusted_mode.flags;
+}
+
+static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t pipeconf;
+
+ pipeconf = 0;
+
+ if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
+ (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
+ pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE;
+
+ if (intel_crtc->config->double_wide)
+ pipeconf |= PIPECONF_DOUBLE_WIDE;
+
+ /* only g4x and later have fancy bpc/dither controls */
+ if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
+ /* Bspec claims that we can't use dithering for 30bpp pipes. */
+ if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30)
+ pipeconf |= PIPECONF_DITHER_EN |
+ PIPECONF_DITHER_TYPE_SP;
+
+ switch (intel_crtc->config->pipe_bpp) {
+ case 18:
+ pipeconf |= PIPECONF_6BPC;
+ break;
+ case 24:
+ pipeconf |= PIPECONF_8BPC;
+ break;
+ case 30:
+ pipeconf |= PIPECONF_10BPC;
+ break;
+ default:
+ /* Case prevented by intel_choose_pipe_bpp_dither. */
+ BUG();
+ }
+ }
+
+ if (HAS_PIPE_CXSR(dev)) {
+ if (intel_crtc->lowfreq_avail) {
+ DRM_DEBUG_KMS("enabling CxSR downclocking\n");
+ pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
+ } else {
+ DRM_DEBUG_KMS("disabling CxSR downclocking\n");
+ }
+ }
+
+ if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
+ if (INTEL_INFO(dev)->gen < 4 ||
+ intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
+ pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
+ else
+ pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
+ } else
+ pipeconf |= PIPECONF_PROGRESSIVE;
+
+ if (IS_VALLEYVIEW(dev) && intel_crtc->config->limited_color_range)
+ pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
+
+ I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf);
+ POSTING_READ(PIPECONF(intel_crtc->pipe));
+}
+
+static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int refclk, num_connectors = 0;
+ intel_clock_t clock, reduced_clock;
+ bool ok, has_reduced_clock = false;
+ bool is_lvds = false, is_dsi = false;
+ struct intel_encoder *encoder;
+ const intel_limit_t *limit;
+ struct drm_atomic_state *state = crtc_state->base.state;
+ struct drm_connector_state *connector_state;
+ int i;
+
+ for (i = 0; i < state->num_connector; i++) {
+ if (!state->connectors[i])
+ continue;
+
+ connector_state = state->connector_states[i];
+ if (connector_state->crtc != &crtc->base)
+ continue;
+
+ encoder = to_intel_encoder(connector_state->best_encoder);
+
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ is_lvds = true;
+ break;
+ case INTEL_OUTPUT_DSI:
+ is_dsi = true;
+ break;
+ default:
+ break;
+ }
+
+ num_connectors++;
+ }
+
+ if (is_dsi)
+ return 0;
+
+ if (!crtc_state->clock_set) {
+ refclk = i9xx_get_refclk(crtc_state, num_connectors);
+
+ /*
+ * Returns a set of divisors for the desired target clock with
+ * the given refclk, or FALSE. The returned values represent
+ * the clock equation: reflck * (5 * (m1 + 2) + (m2 + 2)) / (n +
+ * 2) / p1 / p2.
+ */
+ limit = intel_limit(crtc_state, refclk);
+ ok = dev_priv->display.find_dpll(limit, crtc_state,
+ crtc_state->port_clock,
+ refclk, NULL, &clock);
+ if (!ok) {
+ DRM_ERROR("Couldn't find PLL settings for mode!\n");
+ return -EINVAL;
+ }
+
+ if (is_lvds && dev_priv->lvds_downclock_avail) {
+ /*
+ * Ensure we match the reduced clock's P to the target
+ * clock. If the clocks don't match, we can't switch
+ * the display clock by using the FP0/FP1. In such case
+ * we will disable the LVDS downclock feature.
+ */
+ has_reduced_clock =
+ dev_priv->display.find_dpll(limit, crtc_state,
+ dev_priv->lvds_downclock,
+ refclk, &clock,
+ &reduced_clock);
+ }
+ /* Compat-code for transition, will disappear. */
+ crtc_state->dpll.n = clock.n;
+ crtc_state->dpll.m1 = clock.m1;
+ crtc_state->dpll.m2 = clock.m2;
+ crtc_state->dpll.p1 = clock.p1;
+ crtc_state->dpll.p2 = clock.p2;
+ }
+
+ if (IS_GEN2(dev)) {
+ i8xx_update_pll(crtc, crtc_state,
+ has_reduced_clock ? &reduced_clock : NULL,
+ num_connectors);
+ } else if (IS_CHERRYVIEW(dev)) {
+ chv_update_pll(crtc, crtc_state);
+ } else if (IS_VALLEYVIEW(dev)) {
+ vlv_update_pll(crtc, crtc_state);
+ } else {
+ i9xx_update_pll(crtc, crtc_state,
+ has_reduced_clock ? &reduced_clock : NULL,
+ num_connectors);
+ }
+
+ return 0;
+}
+
+static void i9xx_get_pfit_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t tmp;
+
+ if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
+ return;
+
+ tmp = I915_READ(PFIT_CONTROL);
+ if (!(tmp & PFIT_ENABLE))
+ return;
+
+ /* Check whether the pfit is attached to our pipe. */
+ if (INTEL_INFO(dev)->gen < 4) {
+ if (crtc->pipe != PIPE_B)
+ return;
+ } else {
+ if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
+ return;
+ }
+
+ pipe_config->gmch_pfit.control = tmp;
+ pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
+ if (INTEL_INFO(dev)->gen < 5)
+ pipe_config->gmch_pfit.lvds_border_bits =
+ I915_READ(LVDS) & LVDS_BORDER_ENABLE;
+}
+
+static void vlv_crtc_clock_get(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = pipe_config->cpu_transcoder;
+ intel_clock_t clock;
+ u32 mdiv;
+ int refclk = 100000;
+
+ /* In case of MIPI DPLL will not even be used */
+ if (!(pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE))
+ return;
+
+ mutex_lock(&dev_priv->dpio_lock);
+ mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
+ mutex_unlock(&dev_priv->dpio_lock);
+
+ clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
+ clock.m2 = mdiv & DPIO_M2DIV_MASK;
+ clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
+ clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
+ clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
+
+ vlv_clock(refclk, &clock);
+
+ /* clock.dot is the fast clock */
+ pipe_config->port_clock = clock.dot / 5;
+}
+
+static void
+i9xx_get_initial_plane_config(struct intel_crtc *crtc,
+ struct intel_initial_plane_config *plane_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 val, base, offset;
+ int pipe = crtc->pipe, plane = crtc->plane;
+ int fourcc, pixel_format;
+ unsigned int aligned_height;
+ struct drm_framebuffer *fb;
+ struct intel_framebuffer *intel_fb;
+
+ val = I915_READ(DSPCNTR(plane));
+ if (!(val & DISPLAY_PLANE_ENABLE))
+ return;
+
+ intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
+ if (!intel_fb) {
+ DRM_DEBUG_KMS("failed to alloc fb\n");
+ return;
+ }
+
+ fb = &intel_fb->base;
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ if (val & DISPPLANE_TILED) {
+ plane_config->tiling = I915_TILING_X;
+ fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
+ }
+ }
+
+ pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
+ fourcc = i9xx_format_to_fourcc(pixel_format);
+ fb->pixel_format = fourcc;
+ fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ if (plane_config->tiling)
+ offset = I915_READ(DSPTILEOFF(plane));
+ else
+ offset = I915_READ(DSPLINOFF(plane));
+ base = I915_READ(DSPSURF(plane)) & 0xfffff000;
+ } else {
+ base = I915_READ(DSPADDR(plane));
+ }
+ plane_config->base = base;
+
+ val = I915_READ(PIPESRC(pipe));
+ fb->width = ((val >> 16) & 0xfff) + 1;
+ fb->height = ((val >> 0) & 0xfff) + 1;
+
+ val = I915_READ(DSPSTRIDE(pipe));
+ fb->pitches[0] = val & 0xffffffc0;
+
+ aligned_height = intel_fb_align_height(dev, fb->height,
+ fb->pixel_format,
+ fb->modifier[0]);
+
+ plane_config->size = fb->pitches[0] * aligned_height;
+
+ DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
+ pipe_name(pipe), plane, fb->width, fb->height,
+ fb->bits_per_pixel, base, fb->pitches[0],
+ plane_config->size);
+
+ plane_config->fb = intel_fb;
+}
+
+static void chv_crtc_clock_get(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = pipe_config->cpu_transcoder;
+ enum dpio_channel port = vlv_pipe_to_channel(pipe);
+ intel_clock_t clock;
+ u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2;
+ int refclk = 100000;
+
+ mutex_lock(&dev_priv->dpio_lock);
+ cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
+ pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
+ pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
+ pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
+ mutex_unlock(&dev_priv->dpio_lock);
+
+ clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
+ clock.m2 = ((pll_dw0 & 0xff) << 22) | (pll_dw2 & 0x3fffff);
+ clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
+ clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
+ clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
+
+ chv_clock(refclk, &clock);
+
+ /* clock.dot is the fast clock */
+ pipe_config->port_clock = clock.dot / 5;
+}
+
+static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t tmp;
+
+ if (!intel_display_power_is_enabled(dev_priv,
+ POWER_DOMAIN_PIPE(crtc->pipe)))
+ return false;
+
+ pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
+ pipe_config->shared_dpll = DPLL_ID_PRIVATE;
+
+ tmp = I915_READ(PIPECONF(crtc->pipe));
+ if (!(tmp & PIPECONF_ENABLE))
+ return false;
+
+ if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
+ switch (tmp & PIPECONF_BPC_MASK) {
+ case PIPECONF_6BPC:
+ pipe_config->pipe_bpp = 18;
+ break;
+ case PIPECONF_8BPC:
+ pipe_config->pipe_bpp = 24;
+ break;
+ case PIPECONF_10BPC:
+ pipe_config->pipe_bpp = 30;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (IS_VALLEYVIEW(dev) && (tmp & PIPECONF_COLOR_RANGE_SELECT))
+ pipe_config->limited_color_range = true;
+
+ if (INTEL_INFO(dev)->gen < 4)
+ pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
+
+ intel_get_pipe_timings(crtc, pipe_config);
+
+ i9xx_get_pfit_config(crtc, pipe_config);
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ tmp = I915_READ(DPLL_MD(crtc->pipe));
+ pipe_config->pixel_multiplier =
+ ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
+ >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
+ pipe_config->dpll_hw_state.dpll_md = tmp;
+ } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
+ tmp = I915_READ(DPLL(crtc->pipe));
+ pipe_config->pixel_multiplier =
+ ((tmp & SDVO_MULTIPLIER_MASK)
+ >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
+ } else {
+ /* Note that on i915G/GM the pixel multiplier is in the sdvo
+ * port and will be fixed up in the encoder->get_config
+ * function. */
+ pipe_config->pixel_multiplier = 1;
+ }
+ pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
+ if (!IS_VALLEYVIEW(dev)) {
+ /*
+ * DPLL_DVO_2X_MODE must be enabled for both DPLLs
+ * on 830. Filter it out here so that we don't
+ * report errors due to that.
+ */
+ if (IS_I830(dev))
+ pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
+
+ pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
+ pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
+ } else {
+ /* Mask out read-only status bits. */
+ pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
+ DPLL_PORTC_READY_MASK |
+ DPLL_PORTB_READY_MASK);
+ }
+
+ if (IS_CHERRYVIEW(dev))
+ chv_crtc_clock_get(crtc, pipe_config);
+ else if (IS_VALLEYVIEW(dev))
+ vlv_crtc_clock_get(crtc, pipe_config);
+ else
+ i9xx_crtc_clock_get(crtc, pipe_config);
+
+ return true;
+}
+
+static void ironlake_init_pch_refclk(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_encoder *encoder;
+ u32 val, final;
+ bool has_lvds = false;
+ bool has_cpu_edp = false;
+ bool has_panel = false;
+ bool has_ck505 = false;
+ bool can_ssc = false;
+
+ /* We need to take the global config into account */
+ for_each_intel_encoder(dev, encoder) {
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ has_panel = true;
+ has_lvds = true;
+ break;
+ case INTEL_OUTPUT_EDP:
+ has_panel = true;
+ if (enc_to_dig_port(&encoder->base)->port == PORT_A)
+ has_cpu_edp = true;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (HAS_PCH_IBX(dev)) {
+ has_ck505 = dev_priv->vbt.display_clock_mode;
+ can_ssc = has_ck505;
+ } else {
+ has_ck505 = false;
+ can_ssc = true;
+ }
+
+ DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
+ has_panel, has_lvds, has_ck505);
+
+ /* Ironlake: try to setup display ref clock before DPLL
+ * enabling. This is only under driver's control after
+ * PCH B stepping, previous chipset stepping should be
+ * ignoring this setting.
+ */
+ val = I915_READ(PCH_DREF_CONTROL);
+
+ /* As we must carefully and slowly disable/enable each source in turn,
+ * compute the final state we want first and check if we need to
+ * make any changes at all.
+ */
+ final = val;
+ final &= ~DREF_NONSPREAD_SOURCE_MASK;
+ if (has_ck505)
+ final |= DREF_NONSPREAD_CK505_ENABLE;
+ else
+ final |= DREF_NONSPREAD_SOURCE_ENABLE;
+
+ final &= ~DREF_SSC_SOURCE_MASK;
+ final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+ final &= ~DREF_SSC1_ENABLE;
+
+ if (has_panel) {
+ final |= DREF_SSC_SOURCE_ENABLE;
+
+ if (intel_panel_use_ssc(dev_priv) && can_ssc)
+ final |= DREF_SSC1_ENABLE;
+
+ if (has_cpu_edp) {
+ if (intel_panel_use_ssc(dev_priv) && can_ssc)
+ final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
+ else
+ final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
+ } else
+ final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+ } else {
+ final |= DREF_SSC_SOURCE_DISABLE;
+ final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+ }
+
+ if (final == val)
+ return;
+
+ /* Always enable nonspread source */
+ val &= ~DREF_NONSPREAD_SOURCE_MASK;
+
+ if (has_ck505)
+ val |= DREF_NONSPREAD_CK505_ENABLE;
+ else
+ val |= DREF_NONSPREAD_SOURCE_ENABLE;
+
+ if (has_panel) {
+ val &= ~DREF_SSC_SOURCE_MASK;
+ val |= DREF_SSC_SOURCE_ENABLE;
+
+ /* SSC must be turned on before enabling the CPU output */
+ if (intel_panel_use_ssc(dev_priv) && can_ssc) {
+ DRM_DEBUG_KMS("Using SSC on panel\n");
+ val |= DREF_SSC1_ENABLE;
+ } else
+ val &= ~DREF_SSC1_ENABLE;
+
+ /* Get SSC going before enabling the outputs */
+ I915_WRITE(PCH_DREF_CONTROL, val);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+
+ val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+
+ /* Enable CPU source on CPU attached eDP */
+ if (has_cpu_edp) {
+ if (intel_panel_use_ssc(dev_priv) && can_ssc) {
+ DRM_DEBUG_KMS("Using SSC on eDP\n");
+ val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
+ } else
+ val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
+ } else
+ val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+
+ I915_WRITE(PCH_DREF_CONTROL, val);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+ } else {
+ DRM_DEBUG_KMS("Disabling SSC entirely\n");
+
+ val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+
+ /* Turn off CPU output */
+ val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
+
+ I915_WRITE(PCH_DREF_CONTROL, val);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+
+ /* Turn off the SSC source */
+ val &= ~DREF_SSC_SOURCE_MASK;
+ val |= DREF_SSC_SOURCE_DISABLE;
+
+ /* Turn off SSC1 */
+ val &= ~DREF_SSC1_ENABLE;
+
+ I915_WRITE(PCH_DREF_CONTROL, val);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+ }
+
+ BUG_ON(val != final);
+}
+
+static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
+{
+ uint32_t tmp;
+
+ tmp = I915_READ(SOUTH_CHICKEN2);
+ tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
+ I915_WRITE(SOUTH_CHICKEN2, tmp);
+
+ if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) &
+ FDI_MPHY_IOSFSB_RESET_STATUS, 100))
+ DRM_ERROR("FDI mPHY reset assert timeout\n");
+
+ tmp = I915_READ(SOUTH_CHICKEN2);
+ tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
+ I915_WRITE(SOUTH_CHICKEN2, tmp);
+
+ if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) &
+ FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
+ DRM_ERROR("FDI mPHY reset de-assert timeout\n");
+}
+
+/* WaMPhyProgramming:hsw */
+static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
+{
+ uint32_t tmp;
+
+ tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
+ tmp &= ~(0xFF << 24);
+ tmp |= (0x12 << 24);
+ intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
+ tmp |= (1 << 11);
+ intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
+ tmp |= (1 << 11);
+ intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
+ tmp |= (1 << 24) | (1 << 21) | (1 << 18);
+ intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
+ tmp |= (1 << 24) | (1 << 21) | (1 << 18);
+ intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
+ tmp &= ~(7 << 13);
+ tmp |= (5 << 13);
+ intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
+ tmp &= ~(7 << 13);
+ tmp |= (5 << 13);
+ intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
+ tmp &= ~0xFF;
+ tmp |= 0x1C;
+ intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
+ tmp &= ~0xFF;
+ tmp |= 0x1C;
+ intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
+ tmp &= ~(0xFF << 16);
+ tmp |= (0x1C << 16);
+ intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
+ tmp &= ~(0xFF << 16);
+ tmp |= (0x1C << 16);
+ intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
+ tmp |= (1 << 27);
+ intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
+ tmp |= (1 << 27);
+ intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
+ tmp &= ~(0xF << 28);
+ tmp |= (4 << 28);
+ intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
+
+ tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
+ tmp &= ~(0xF << 28);
+ tmp |= (4 << 28);
+ intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
+}
+
+/* Implements 3 different sequences from BSpec chapter "Display iCLK
+ * Programming" based on the parameters passed:
+ * - Sequence to enable CLKOUT_DP
+ * - Sequence to enable CLKOUT_DP without spread
+ * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
+ */
+static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread,
+ bool with_fdi)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t reg, tmp;
+
+ if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
+ with_spread = true;
+ if (WARN(dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE &&
+ with_fdi, "LP PCH doesn't have FDI\n"))
+ with_fdi = false;
+
+ mutex_lock(&dev_priv->dpio_lock);
+
+ tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
+ tmp &= ~SBI_SSCCTL_DISABLE;
+ tmp |= SBI_SSCCTL_PATHALT;
+ intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
+
+ udelay(24);
+
+ if (with_spread) {
+ tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
+ tmp &= ~SBI_SSCCTL_PATHALT;
+ intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
+
+ if (with_fdi) {
+ lpt_reset_fdi_mphy(dev_priv);
+ lpt_program_fdi_mphy(dev_priv);
+ }
+ }
+
+ reg = (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) ?
+ SBI_GEN0 : SBI_DBUFF0;
+ tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
+ tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
+ intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
+
+ mutex_unlock(&dev_priv->dpio_lock);
+}
+
+/* Sequence to disable CLKOUT_DP */
+static void lpt_disable_clkout_dp(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t reg, tmp;
+
+ mutex_lock(&dev_priv->dpio_lock);
+
+ reg = (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) ?
+ SBI_GEN0 : SBI_DBUFF0;
+ tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
+ tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
+ intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
+
+ tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
+ if (!(tmp & SBI_SSCCTL_DISABLE)) {
+ if (!(tmp & SBI_SSCCTL_PATHALT)) {
+ tmp |= SBI_SSCCTL_PATHALT;
+ intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
+ udelay(32);
+ }
+ tmp |= SBI_SSCCTL_DISABLE;
+ intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
+ }
+
+ mutex_unlock(&dev_priv->dpio_lock);
+}
+
+static void lpt_init_pch_refclk(struct drm_device *dev)
+{
+ struct intel_encoder *encoder;
+ bool has_vga = false;
+
+ for_each_intel_encoder(dev, encoder) {
+ switch (encoder->type) {
+ case INTEL_OUTPUT_ANALOG:
+ has_vga = true;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (has_vga)
+ lpt_enable_clkout_dp(dev, true, true);
+ else
+ lpt_disable_clkout_dp(dev);
+}
+
+/*
+ * Initialize reference clocks when the driver loads
+ */
+void intel_init_pch_refclk(struct drm_device *dev)
+{
+ if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+ ironlake_init_pch_refclk(dev);
+ else if (HAS_PCH_LPT(dev))
+ lpt_init_pch_refclk(dev);
+}
+
+static int ironlake_get_refclk(struct intel_crtc_state *crtc_state)
+{
+ struct drm_device *dev = crtc_state->base.crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_atomic_state *state = crtc_state->base.state;
+ struct drm_connector_state *connector_state;
+ struct intel_encoder *encoder;
+ int num_connectors = 0, i;
+ bool is_lvds = false;
+
+ for (i = 0; i < state->num_connector; i++) {
+ if (!state->connectors[i])
+ continue;
+
+ connector_state = state->connector_states[i];
+ if (connector_state->crtc != crtc_state->base.crtc)
+ continue;
+
+ encoder = to_intel_encoder(connector_state->best_encoder);
+
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ is_lvds = true;
+ break;
+ default:
+ break;
+ }
+ num_connectors++;
+ }
+
+ if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
+ DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
+ dev_priv->vbt.lvds_ssc_freq);
+ return dev_priv->vbt.lvds_ssc_freq;
+ }
+
+ return 120000;
+}
+
+static void ironlake_set_pipeconf(struct drm_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = crtc->dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ uint32_t val;
+
+ val = 0;
+
+ switch (intel_crtc->config->pipe_bpp) {
+ case 18:
+ val |= PIPECONF_6BPC;
+ break;
+ case 24:
+ val |= PIPECONF_8BPC;
+ break;
+ case 30:
+ val |= PIPECONF_10BPC;
+ break;
+ case 36:
+ val |= PIPECONF_12BPC;
+ break;
+ default:
+ /* Case prevented by intel_choose_pipe_bpp_dither. */
+ BUG();
+ }
+
+ if (intel_crtc->config->dither)
+ val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
+
+ if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
+ val |= PIPECONF_INTERLACED_ILK;
+ else
+ val |= PIPECONF_PROGRESSIVE;
+
+ if (intel_crtc->config->limited_color_range)
+ val |= PIPECONF_COLOR_RANGE_SELECT;
+
+ I915_WRITE(PIPECONF(pipe), val);
+ POSTING_READ(PIPECONF(pipe));
+}
+
+/*
+ * Set up the pipe CSC unit.
+ *
+ * Currently only full range RGB to limited range RGB conversion
+ * is supported, but eventually this should handle various
+ * RGB<->YCbCr scenarios as well.
+ */
+static void intel_set_pipe_csc(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ uint16_t coeff = 0x7800; /* 1.0 */
+
+ /*
+ * TODO: Check what kind of values actually come out of the pipe
+ * with these coeff/postoff values and adjust to get the best
+ * accuracy. Perhaps we even need to take the bpc value into
+ * consideration.
+ */
+
+ if (intel_crtc->config->limited_color_range)
+ coeff = ((235 - 16) * (1 << 12) / 255) & 0xff8; /* 0.xxx... */
+
+ /*
+ * GY/GU and RY/RU should be the other way around according
+ * to BSpec, but reality doesn't agree. Just set them up in
+ * a way that results in the correct picture.
+ */
+ I915_WRITE(PIPE_CSC_COEFF_RY_GY(pipe), coeff << 16);
+ I915_WRITE(PIPE_CSC_COEFF_BY(pipe), 0);
+
+ I915_WRITE(PIPE_CSC_COEFF_RU_GU(pipe), coeff);
+ I915_WRITE(PIPE_CSC_COEFF_BU(pipe), 0);
+
+ I915_WRITE(PIPE_CSC_COEFF_RV_GV(pipe), 0);
+ I915_WRITE(PIPE_CSC_COEFF_BV(pipe), coeff << 16);
+
+ I915_WRITE(PIPE_CSC_PREOFF_HI(pipe), 0);
+ I915_WRITE(PIPE_CSC_PREOFF_ME(pipe), 0);
+ I915_WRITE(PIPE_CSC_PREOFF_LO(pipe), 0);
+
+ if (INTEL_INFO(dev)->gen > 6) {
+ uint16_t postoff = 0;
+
+ if (intel_crtc->config->limited_color_range)
+ postoff = (16 * (1 << 12) / 255) & 0x1fff;
+
+ I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), postoff);
+ I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), postoff);
+ I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), postoff);
+
+ I915_WRITE(PIPE_CSC_MODE(pipe), 0);
+ } else {
+ uint32_t mode = CSC_MODE_YUV_TO_RGB;
+
+ if (intel_crtc->config->limited_color_range)
+ mode |= CSC_BLACK_SCREEN_OFFSET;
+
+ I915_WRITE(PIPE_CSC_MODE(pipe), mode);
+ }
+}
+
+static void haswell_set_pipeconf(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum pipe pipe = intel_crtc->pipe;
+ enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+ uint32_t val;
+
+ val = 0;
+
+ if (IS_HASWELL(dev) && intel_crtc->config->dither)
+ val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
+
+ if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
+ val |= PIPECONF_INTERLACED_ILK;
+ else
+ val |= PIPECONF_PROGRESSIVE;
+
+ I915_WRITE(PIPECONF(cpu_transcoder), val);
+ POSTING_READ(PIPECONF(cpu_transcoder));
+
+ I915_WRITE(GAMMA_MODE(intel_crtc->pipe), GAMMA_MODE_MODE_8BIT);
+ POSTING_READ(GAMMA_MODE(intel_crtc->pipe));
+
+ if (IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) {
+ val = 0;
+
+ switch (intel_crtc->config->pipe_bpp) {
+ case 18:
+ val |= PIPEMISC_DITHER_6_BPC;
+ break;
+ case 24:
+ val |= PIPEMISC_DITHER_8_BPC;
+ break;
+ case 30:
+ val |= PIPEMISC_DITHER_10_BPC;
+ break;
+ case 36:
+ val |= PIPEMISC_DITHER_12_BPC;
+ break;
+ default:
+ /* Case prevented by pipe_config_set_bpp. */
+ BUG();
+ }
+
+ if (intel_crtc->config->dither)
+ val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
+
+ I915_WRITE(PIPEMISC(pipe), val);
+ }
+}
+
+static bool ironlake_compute_clocks(struct drm_crtc *crtc,
+ struct intel_crtc_state *crtc_state,
+ intel_clock_t *clock,
+ bool *has_reduced_clock,
+ intel_clock_t *reduced_clock)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int refclk;
+ const intel_limit_t *limit;
+ bool ret, is_lvds = false;
+
+ is_lvds = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS);
+
+ refclk = ironlake_get_refclk(crtc_state);
+
+ /*
+ * Returns a set of divisors for the desired target clock with the given
+ * refclk, or FALSE. The returned values represent the clock equation:
+ * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
+ */
+ limit = intel_limit(crtc_state, refclk);
+ ret = dev_priv->display.find_dpll(limit, crtc_state,
+ crtc_state->port_clock,
+ refclk, NULL, clock);
+ if (!ret)
+ return false;
+
+ if (is_lvds && dev_priv->lvds_downclock_avail) {
+ /*
+ * Ensure we match the reduced clock's P to the target clock.
+ * If the clocks don't match, we can't switch the display clock
+ * by using the FP0/FP1. In such case we will disable the LVDS
+ * downclock feature.
+ */
+ *has_reduced_clock =
+ dev_priv->display.find_dpll(limit, crtc_state,
+ dev_priv->lvds_downclock,
+ refclk, clock,
+ reduced_clock);
+ }
+
+ return true;
+}
+
+int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
+{
+ /*
+ * Account for spread spectrum to avoid
+ * oversubscribing the link. Max center spread
+ * is 2.5%; use 5% for safety's sake.
+ */
+ u32 bps = target_clock * bpp * 21 / 20;
+ return DIV_ROUND_UP(bps, link_bw * 8);
+}
+
+static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
+{
+ return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
+}
+
+static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
+ struct intel_crtc_state *crtc_state,
+ u32 *fp,
+ intel_clock_t *reduced_clock, u32 *fp2)
+{
+ struct drm_crtc *crtc = &intel_crtc->base;
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_atomic_state *state = crtc_state->base.state;
+ struct drm_connector_state *connector_state;
+ struct intel_encoder *encoder;
+ uint32_t dpll;
+ int factor, num_connectors = 0, i;
+ bool is_lvds = false, is_sdvo = false;
+
+ for (i = 0; i < state->num_connector; i++) {
+ if (!state->connectors[i])
+ continue;
+
+ connector_state = state->connector_states[i];
+ if (connector_state->crtc != crtc_state->base.crtc)
+ continue;
+
+ encoder = to_intel_encoder(connector_state->best_encoder);
+
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ is_lvds = true;
+ break;
+ case INTEL_OUTPUT_SDVO:
+ case INTEL_OUTPUT_HDMI:
+ is_sdvo = true;
+ break;
+ default:
+ break;
+ }
+
+ num_connectors++;
+ }
+
+ /* Enable autotuning of the PLL clock (if permissible) */
+ factor = 21;
+ if (is_lvds) {
+ if ((intel_panel_use_ssc(dev_priv) &&
+ dev_priv->vbt.lvds_ssc_freq == 100000) ||
+ (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
+ factor = 25;
+ } else if (crtc_state->sdvo_tv_clock)
+ factor = 20;
+
+ if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
+ *fp |= FP_CB_TUNE;
+
+ if (fp2 && (reduced_clock->m < factor * reduced_clock->n))
+ *fp2 |= FP_CB_TUNE;
+
+ dpll = 0;
+
+ if (is_lvds)
+ dpll |= DPLLB_MODE_LVDS;
+ else
+ dpll |= DPLLB_MODE_DAC_SERIAL;
+
+ dpll |= (crtc_state->pixel_multiplier - 1)
+ << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
+
+ if (is_sdvo)
+ dpll |= DPLL_SDVO_HIGH_SPEED;
+ if (crtc_state->has_dp_encoder)
+ dpll |= DPLL_SDVO_HIGH_SPEED;
+
+ /* compute bitmask from p1 value */
+ dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
+ /* also FPA1 */
+ dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+
+ switch (crtc_state->dpll.p2) {
+ case 5:
+ dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
+ break;
+ case 7:
+ dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
+ break;
+ case 10:
+ dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
+ break;
+ case 14:
+ dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
+ break;
+ }
+
+ if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
+ dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
+ else
+ dpll |= PLL_REF_INPUT_DREFCLK;
+
+ return dpll | DPLL_VCO_ENABLE;
+}
+
+static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state)
+{
+ struct drm_device *dev = crtc->base.dev;
+ intel_clock_t clock, reduced_clock;
+ u32 dpll = 0, fp = 0, fp2 = 0;
+ bool ok, has_reduced_clock = false;
+ bool is_lvds = false;
+ struct intel_shared_dpll *pll;
+
+ is_lvds = intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS);
+
+ WARN(!(HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)),
+ "Unexpected PCH type %d\n", INTEL_PCH_TYPE(dev));
+
+ ok = ironlake_compute_clocks(&crtc->base, crtc_state, &clock,
+ &has_reduced_clock, &reduced_clock);
+ if (!ok && !crtc_state->clock_set) {
+ DRM_ERROR("Couldn't find PLL settings for mode!\n");
+ return -EINVAL;
+ }
+ /* Compat-code for transition, will disappear. */
+ if (!crtc_state->clock_set) {
+ crtc_state->dpll.n = clock.n;
+ crtc_state->dpll.m1 = clock.m1;
+ crtc_state->dpll.m2 = clock.m2;
+ crtc_state->dpll.p1 = clock.p1;
+ crtc_state->dpll.p2 = clock.p2;
+ }
+
+ /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
+ if (crtc_state->has_pch_encoder) {
+ fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
+ if (has_reduced_clock)
+ fp2 = i9xx_dpll_compute_fp(&reduced_clock);
+
+ dpll = ironlake_compute_dpll(crtc, crtc_state,
+ &fp, &reduced_clock,
+ has_reduced_clock ? &fp2 : NULL);
+
+ crtc_state->dpll_hw_state.dpll = dpll;
+ crtc_state->dpll_hw_state.fp0 = fp;
+ if (has_reduced_clock)
+ crtc_state->dpll_hw_state.fp1 = fp2;
+ else
+ crtc_state->dpll_hw_state.fp1 = fp;
+
+ pll = intel_get_shared_dpll(crtc, crtc_state);
+ if (pll == NULL) {
+ DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
+ pipe_name(crtc->pipe));
+ return -EINVAL;
+ }
+ }
+
+ if (is_lvds && has_reduced_clock)
+ crtc->lowfreq_avail = true;
+ else
+ crtc->lowfreq_avail = false;
+
+ return 0;
+}
+
+static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
+ struct intel_link_m_n *m_n)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe = crtc->pipe;
+
+ m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
+ m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
+ m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
+ & ~TU_SIZE_MASK;
+ m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
+ m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
+ & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+}
+
+static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
+ enum transcoder transcoder,
+ struct intel_link_m_n *m_n,
+ struct intel_link_m_n *m2_n2)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe = crtc->pipe;
+
+ if (INTEL_INFO(dev)->gen >= 5) {
+ m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
+ m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
+ m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
+ & ~TU_SIZE_MASK;
+ m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
+ m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
+ & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+ /* Read M2_N2 registers only for gen < 8 (M2_N2 available for
+ * gen < 8) and if DRRS is supported (to make sure the
+ * registers are not unnecessarily read).
+ */
+ if (m2_n2 && INTEL_INFO(dev)->gen < 8 &&
+ crtc->config->has_drrs) {
+ m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
+ m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
+ m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
+ & ~TU_SIZE_MASK;
+ m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
+ m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
+ & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+ }
+ } else {
+ m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
+ m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
+ m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
+ & ~TU_SIZE_MASK;
+ m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
+ m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
+ & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
+ }
+}
+
+void intel_dp_get_m_n(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ if (pipe_config->has_pch_encoder)
+ intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
+ else
+ intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
+ &pipe_config->dp_m_n,
+ &pipe_config->dp_m2_n2);
+}
+
+static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
+ &pipe_config->fdi_m_n, NULL);
+}
+
+static void skylake_get_pfit_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t tmp;
+
+ tmp = I915_READ(PS_CTL(crtc->pipe));
+
+ if (tmp & PS_ENABLE) {
+ pipe_config->pch_pfit.enabled = true;
+ pipe_config->pch_pfit.pos = I915_READ(PS_WIN_POS(crtc->pipe));
+ pipe_config->pch_pfit.size = I915_READ(PS_WIN_SZ(crtc->pipe));
+ }
+}
+
+static void
+skylake_get_initial_plane_config(struct intel_crtc *crtc,
+ struct intel_initial_plane_config *plane_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 val, base, offset, stride_mult, tiling;
+ int pipe = crtc->pipe;
+ int fourcc, pixel_format;
+ unsigned int aligned_height;
+ struct drm_framebuffer *fb;
+ struct intel_framebuffer *intel_fb;
+
+ intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
+ if (!intel_fb) {
+ DRM_DEBUG_KMS("failed to alloc fb\n");
+ return;
+ }
+
+ fb = &intel_fb->base;
+
+ val = I915_READ(PLANE_CTL(pipe, 0));
+ if (!(val & PLANE_CTL_ENABLE))
+ goto error;
+
+ pixel_format = val & PLANE_CTL_FORMAT_MASK;
+ fourcc = skl_format_to_fourcc(pixel_format,
+ val & PLANE_CTL_ORDER_RGBX,
+ val & PLANE_CTL_ALPHA_MASK);
+ fb->pixel_format = fourcc;
+ fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
+
+ tiling = val & PLANE_CTL_TILED_MASK;
+ switch (tiling) {
+ case PLANE_CTL_TILED_LINEAR:
+ fb->modifier[0] = DRM_FORMAT_MOD_NONE;
+ break;
+ case PLANE_CTL_TILED_X:
+ plane_config->tiling = I915_TILING_X;
+ fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
+ break;
+ case PLANE_CTL_TILED_Y:
+ fb->modifier[0] = I915_FORMAT_MOD_Y_TILED;
+ break;
+ case PLANE_CTL_TILED_YF:
+ fb->modifier[0] = I915_FORMAT_MOD_Yf_TILED;
+ break;
+ default:
+ MISSING_CASE(tiling);
+ goto error;
+ }
+
+ base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000;
+ plane_config->base = base;
+
+ offset = I915_READ(PLANE_OFFSET(pipe, 0));
+
+ val = I915_READ(PLANE_SIZE(pipe, 0));
+ fb->height = ((val >> 16) & 0xfff) + 1;
+ fb->width = ((val >> 0) & 0x1fff) + 1;
+
+ val = I915_READ(PLANE_STRIDE(pipe, 0));
+ stride_mult = intel_fb_stride_alignment(dev, fb->modifier[0],
+ fb->pixel_format);
+ fb->pitches[0] = (val & 0x3ff) * stride_mult;
+
+ aligned_height = intel_fb_align_height(dev, fb->height,
+ fb->pixel_format,
+ fb->modifier[0]);
+
+ plane_config->size = fb->pitches[0] * aligned_height;
+
+ DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
+ pipe_name(pipe), fb->width, fb->height,
+ fb->bits_per_pixel, base, fb->pitches[0],
+ plane_config->size);
+
+ plane_config->fb = intel_fb;
+ return;
+
+error:
+ kfree(fb);
+}
+
+static void ironlake_get_pfit_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t tmp;
+
+ tmp = I915_READ(PF_CTL(crtc->pipe));
+
+ if (tmp & PF_ENABLE) {
+ pipe_config->pch_pfit.enabled = true;
+ pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
+ pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
+
+ /* We currently do not free assignements of panel fitters on
+ * ivb/hsw (since we don't use the higher upscaling modes which
+ * differentiates them) so just WARN about this case for now. */
+ if (IS_GEN7(dev)) {
+ WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
+ PF_PIPE_SEL_IVB(crtc->pipe));
+ }
+ }
+}
+
+static void
+ironlake_get_initial_plane_config(struct intel_crtc *crtc,
+ struct intel_initial_plane_config *plane_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 val, base, offset;
+ int pipe = crtc->pipe;
+ int fourcc, pixel_format;
+ unsigned int aligned_height;
+ struct drm_framebuffer *fb;
+ struct intel_framebuffer *intel_fb;
+
+ val = I915_READ(DSPCNTR(pipe));
+ if (!(val & DISPLAY_PLANE_ENABLE))
+ return;
+
+ intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
+ if (!intel_fb) {
+ DRM_DEBUG_KMS("failed to alloc fb\n");
+ return;
+ }
+
+ fb = &intel_fb->base;
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ if (val & DISPPLANE_TILED) {
+ plane_config->tiling = I915_TILING_X;
+ fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
+ }
+ }
+
+ pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
+ fourcc = i9xx_format_to_fourcc(pixel_format);
+ fb->pixel_format = fourcc;
+ fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
+
+ base = I915_READ(DSPSURF(pipe)) & 0xfffff000;
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+ offset = I915_READ(DSPOFFSET(pipe));
+ } else {
+ if (plane_config->tiling)
+ offset = I915_READ(DSPTILEOFF(pipe));
+ else
+ offset = I915_READ(DSPLINOFF(pipe));
+ }
+ plane_config->base = base;
+
+ val = I915_READ(PIPESRC(pipe));
+ fb->width = ((val >> 16) & 0xfff) + 1;
+ fb->height = ((val >> 0) & 0xfff) + 1;
+
+ val = I915_READ(DSPSTRIDE(pipe));
+ fb->pitches[0] = val & 0xffffffc0;
+
+ aligned_height = intel_fb_align_height(dev, fb->height,
+ fb->pixel_format,
+ fb->modifier[0]);
+
+ plane_config->size = fb->pitches[0] * aligned_height;
+
+ DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
+ pipe_name(pipe), fb->width, fb->height,
+ fb->bits_per_pixel, base, fb->pitches[0],
+ plane_config->size);
+
+ plane_config->fb = intel_fb;
+}
+
+static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t tmp;
+
+ if (!intel_display_power_is_enabled(dev_priv,
+ POWER_DOMAIN_PIPE(crtc->pipe)))
+ return false;
+
+ pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
+ pipe_config->shared_dpll = DPLL_ID_PRIVATE;
+
+ tmp = I915_READ(PIPECONF(crtc->pipe));
+ if (!(tmp & PIPECONF_ENABLE))
+ return false;
+
+ switch (tmp & PIPECONF_BPC_MASK) {
+ case PIPECONF_6BPC:
+ pipe_config->pipe_bpp = 18;
+ break;
+ case PIPECONF_8BPC:
+ pipe_config->pipe_bpp = 24;
+ break;
+ case PIPECONF_10BPC:
+ pipe_config->pipe_bpp = 30;
+ break;
+ case PIPECONF_12BPC:
+ pipe_config->pipe_bpp = 36;
+ break;
+ default:
+ break;
+ }
+
+ if (tmp & PIPECONF_COLOR_RANGE_SELECT)
+ pipe_config->limited_color_range = true;
+
+ if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
+ struct intel_shared_dpll *pll;
+
+ pipe_config->has_pch_encoder = true;
+
+ tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
+ pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
+ FDI_DP_PORT_WIDTH_SHIFT) + 1;
+
+ ironlake_get_fdi_m_n_config(crtc, pipe_config);
+
+ if (HAS_PCH_IBX(dev_priv->dev)) {
+ pipe_config->shared_dpll =
+ (enum intel_dpll_id) crtc->pipe;
+ } else {
+ tmp = I915_READ(PCH_DPLL_SEL);
+ if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
+ pipe_config->shared_dpll = DPLL_ID_PCH_PLL_B;
+ else
+ pipe_config->shared_dpll = DPLL_ID_PCH_PLL_A;
+ }
+
+ pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
+
+ WARN_ON(!pll->get_hw_state(dev_priv, pll,
+ &pipe_config->dpll_hw_state));
+
+ tmp = pipe_config->dpll_hw_state.dpll;
+ pipe_config->pixel_multiplier =
+ ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
+ >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
+
+ ironlake_pch_clock_get(crtc, pipe_config);
+ } else {
+ pipe_config->pixel_multiplier = 1;
+ }
+
+ intel_get_pipe_timings(crtc, pipe_config);
+
+ ironlake_get_pfit_config(crtc, pipe_config);
+
+ return true;
+}
+
+static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct intel_crtc *crtc;
+
+ for_each_intel_crtc(dev, crtc)
+ I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
+ pipe_name(crtc->pipe));
+
+ I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n");
+ I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
+ I915_STATE_WARN(I915_READ(WRPLL_CTL1) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
+ I915_STATE_WARN(I915_READ(WRPLL_CTL2) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n");
+ I915_STATE_WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n");
+ I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
+ "CPU PWM1 enabled\n");
+ if (IS_HASWELL(dev))
+ I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
+ "CPU PWM2 enabled\n");
+ I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
+ "PCH PWM1 enabled\n");
+ I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
+ "Utility pin enabled\n");
+ I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n");
+
+ /*
+ * In theory we can still leave IRQs enabled, as long as only the HPD
+ * interrupts remain enabled. We used to check for that, but since it's
+ * gen-specific and since we only disable LCPLL after we fully disable
+ * the interrupts, the check below should be enough.
+ */
+ I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
+}
+
+static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+
+ if (IS_HASWELL(dev))
+ return I915_READ(D_COMP_HSW);
+ else
+ return I915_READ(D_COMP_BDW);
+}
+
+static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
+{
+ struct drm_device *dev = dev_priv->dev;
+
+ if (IS_HASWELL(dev)) {
+ mutex_lock(&dev_priv->rps.hw_lock);
+ if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
+ val))
+ DRM_ERROR("Failed to write to D_COMP\n");
+ mutex_unlock(&dev_priv->rps.hw_lock);
+ } else {
+ I915_WRITE(D_COMP_BDW, val);
+ POSTING_READ(D_COMP_BDW);
+ }
+}
+
+/*
+ * This function implements pieces of two sequences from BSpec:
+ * - Sequence for display software to disable LCPLL
+ * - Sequence for display software to allow package C8+
+ * The steps implemented here are just the steps that actually touch the LCPLL
+ * register. Callers should take care of disabling all the display engine
+ * functions, doing the mode unset, fixing interrupts, etc.
+ */
+static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
+ bool switch_to_fclk, bool allow_power_down)
+{
+ uint32_t val;
+
+ assert_can_disable_lcpll(dev_priv);
+
+ val = I915_READ(LCPLL_CTL);
+
+ if (switch_to_fclk) {
+ val |= LCPLL_CD_SOURCE_FCLK;
+ I915_WRITE(LCPLL_CTL, val);
+
+ if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
+ LCPLL_CD_SOURCE_FCLK_DONE, 1))
+ DRM_ERROR("Switching to FCLK failed\n");
+
+ val = I915_READ(LCPLL_CTL);
+ }
+
+ val |= LCPLL_PLL_DISABLE;
+ I915_WRITE(LCPLL_CTL, val);
+ POSTING_READ(LCPLL_CTL);
+
+ if (wait_for((I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK) == 0, 1))
+ DRM_ERROR("LCPLL still locked\n");
+
+ val = hsw_read_dcomp(dev_priv);
+ val |= D_COMP_COMP_DISABLE;
+ hsw_write_dcomp(dev_priv, val);
+ ndelay(100);
+
+ if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0,
+ 1))
+ DRM_ERROR("D_COMP RCOMP still in progress\n");
+
+ if (allow_power_down) {
+ val = I915_READ(LCPLL_CTL);
+ val |= LCPLL_POWER_DOWN_ALLOW;
+ I915_WRITE(LCPLL_CTL, val);
+ POSTING_READ(LCPLL_CTL);
+ }
+}
+
+/*
+ * Fully restores LCPLL, disallowing power down and switching back to LCPLL
+ * source.
+ */
+static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
+{
+ uint32_t val;
+
+ val = I915_READ(LCPLL_CTL);
+
+ if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
+ LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
+ return;
+
+ /*
+ * Make sure we're not on PC8 state before disabling PC8, otherwise
+ * we'll hang the machine. To prevent PC8 state, just enable force_wake.
+ */
+ intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
+
+ if (val & LCPLL_POWER_DOWN_ALLOW) {
+ val &= ~LCPLL_POWER_DOWN_ALLOW;
+ I915_WRITE(LCPLL_CTL, val);
+ POSTING_READ(LCPLL_CTL);
+ }
+
+ val = hsw_read_dcomp(dev_priv);
+ val |= D_COMP_COMP_FORCE;
+ val &= ~D_COMP_COMP_DISABLE;
+ hsw_write_dcomp(dev_priv, val);
+
+ val = I915_READ(LCPLL_CTL);
+ val &= ~LCPLL_PLL_DISABLE;
+ I915_WRITE(LCPLL_CTL, val);
+
+ if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5))
+ DRM_ERROR("LCPLL not locked yet\n");
+
+ if (val & LCPLL_CD_SOURCE_FCLK) {
+ val = I915_READ(LCPLL_CTL);
+ val &= ~LCPLL_CD_SOURCE_FCLK;
+ I915_WRITE(LCPLL_CTL, val);
+
+ if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
+ LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
+ DRM_ERROR("Switching back to LCPLL failed\n");
+ }
+
+ intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
+}
+
+/*
+ * Package states C8 and deeper are really deep PC states that can only be
+ * reached when all the devices on the system allow it, so even if the graphics
+ * device allows PC8+, it doesn't mean the system will actually get to these
+ * states. Our driver only allows PC8+ when going into runtime PM.
+ *
+ * The requirements for PC8+ are that all the outputs are disabled, the power
+ * well is disabled and most interrupts are disabled, and these are also
+ * requirements for runtime PM. When these conditions are met, we manually do
+ * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
+ * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
+ * hang the machine.
+ *
+ * When we really reach PC8 or deeper states (not just when we allow it) we lose
+ * the state of some registers, so when we come back from PC8+ we need to
+ * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
+ * need to take care of the registers kept by RC6. Notice that this happens even
+ * if we don't put the device in PCI D3 state (which is what currently happens
+ * because of the runtime PM support).
+ *
+ * For more, read "Display Sequences for Package C8" on the hardware
+ * documentation.
+ */
+void hsw_enable_pc8(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ uint32_t val;
+
+ DRM_DEBUG_KMS("Enabling package C8+\n");
+
+ if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
+ val = I915_READ(SOUTH_DSPCLK_GATE_D);
+ val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
+ I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
+ }
+
+ lpt_disable_clkout_dp(dev);
+ hsw_disable_lcpll(dev_priv, true, true);
+}
+
+void hsw_disable_pc8(struct drm_i915_private *dev_priv)
+{
+ struct drm_device *dev = dev_priv->dev;
+ uint32_t val;
+
+ DRM_DEBUG_KMS("Disabling package C8+\n");
+
+ hsw_restore_lcpll(dev_priv);
+ lpt_init_pch_refclk(dev);
+
+ if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
+ val = I915_READ(SOUTH_DSPCLK_GATE_D);
+ val |= PCH_LP_PARTITION_LEVEL_DISABLE;
+ I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
+ }
+
+ intel_prepare_ddi(dev);
+}
+
+static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state)
+{
+ if (!intel_ddi_pll_select(crtc, crtc_state))
+ return -EINVAL;
+
+ crtc->lowfreq_avail = false;
+
+ return 0;
+}
+
+static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
+ enum port port,
+ struct intel_crtc_state *pipe_config)
+{
+ u32 temp, dpll_ctl1;
+
+ temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
+ pipe_config->ddi_pll_sel = temp >> (port * 3 + 1);
+
+ switch (pipe_config->ddi_pll_sel) {
+ case SKL_DPLL0:
+ /*
+ * On SKL the eDP DPLL (DPLL0 as we don't use SSC) is not part
+ * of the shared DPLL framework and thus needs to be read out
+ * separately
+ */
+ dpll_ctl1 = I915_READ(DPLL_CTRL1);
+ pipe_config->dpll_hw_state.ctrl1 = dpll_ctl1 & 0x3f;
+ break;
+ case SKL_DPLL1:
+ pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
+ break;
+ case SKL_DPLL2:
+ pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
+ break;
+ case SKL_DPLL3:
+ pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
+ break;
+ }
+}
+
+static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
+ enum port port,
+ struct intel_crtc_state *pipe_config)
+{
+ pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
+
+ switch (pipe_config->ddi_pll_sel) {
+ case PORT_CLK_SEL_WRPLL1:
+ pipe_config->shared_dpll = DPLL_ID_WRPLL1;
+ break;
+ case PORT_CLK_SEL_WRPLL2:
+ pipe_config->shared_dpll = DPLL_ID_WRPLL2;
+ break;
+ }
+}
+
+static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_shared_dpll *pll;
+ enum port port;
+ uint32_t tmp;
+
+ tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
+
+ port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
+
+ if (IS_SKYLAKE(dev))
+ skylake_get_ddi_pll(dev_priv, port, pipe_config);
+ else
+ haswell_get_ddi_pll(dev_priv, port, pipe_config);
+
+ if (pipe_config->shared_dpll >= 0) {
+ pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
+
+ WARN_ON(!pll->get_hw_state(dev_priv, pll,
+ &pipe_config->dpll_hw_state));
+ }
+
+ /*
+ * Haswell has only FDI/PCH transcoder A. It is which is connected to
+ * DDI E. So just check whether this pipe is wired to DDI E and whether
+ * the PCH transcoder is on.
+ */
+ if (INTEL_INFO(dev)->gen < 9 &&
+ (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
+ pipe_config->has_pch_encoder = true;
+
+ tmp = I915_READ(FDI_RX_CTL(PIPE_A));
+ pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
+ FDI_DP_PORT_WIDTH_SHIFT) + 1;
+
+ ironlake_get_fdi_m_n_config(crtc, pipe_config);
+ }
+}
+
+static bool haswell_get_pipe_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum intel_display_power_domain pfit_domain;
+ uint32_t tmp;
+
+ if (!intel_display_power_is_enabled(dev_priv,
+ POWER_DOMAIN_PIPE(crtc->pipe)))
+ return false;
+
+ pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
+ pipe_config->shared_dpll = DPLL_ID_PRIVATE;
+
+ tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
+ if (tmp & TRANS_DDI_FUNC_ENABLE) {
+ enum pipe trans_edp_pipe;
+ switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
+ default:
+ WARN(1, "unknown pipe linked to edp transcoder\n");
+ case TRANS_DDI_EDP_INPUT_A_ONOFF:
+ case TRANS_DDI_EDP_INPUT_A_ON:
+ trans_edp_pipe = PIPE_A;
+ break;
+ case TRANS_DDI_EDP_INPUT_B_ONOFF:
+ trans_edp_pipe = PIPE_B;
+ break;
+ case TRANS_DDI_EDP_INPUT_C_ONOFF:
+ trans_edp_pipe = PIPE_C;
+ break;
+ }
+
+ if (trans_edp_pipe == crtc->pipe)
+ pipe_config->cpu_transcoder = TRANSCODER_EDP;
+ }
+
+ if (!intel_display_power_is_enabled(dev_priv,
+ POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder)))
+ return false;
+
+ tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
+ if (!(tmp & PIPECONF_ENABLE))
+ return false;
+
+ haswell_get_ddi_port_state(crtc, pipe_config);
+
+ intel_get_pipe_timings(crtc, pipe_config);
+
+ pfit_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
+ if (intel_display_power_is_enabled(dev_priv, pfit_domain)) {
+ if (IS_SKYLAKE(dev))
+ skylake_get_pfit_config(crtc, pipe_config);
+ else
+ ironlake_get_pfit_config(crtc, pipe_config);
+ }
+
+ if (IS_HASWELL(dev))
+ pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) &&
+ (I915_READ(IPS_CTL) & IPS_ENABLE);
+
+ if (pipe_config->cpu_transcoder != TRANSCODER_EDP) {
+ pipe_config->pixel_multiplier =
+ I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
+ } else {
+ pipe_config->pixel_multiplier = 1;
+ }
+
+ return true;
+}
+
+static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ uint32_t cntl = 0, size = 0;
+
+ if (base) {
+ unsigned int width = intel_crtc->base.cursor->state->crtc_w;
+ unsigned int height = intel_crtc->base.cursor->state->crtc_h;
+ unsigned int stride = roundup_pow_of_two(width) * 4;
+
+ switch (stride) {
+ default:
+ WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n",
+ width, stride);
+ stride = 256;
+ /* fallthrough */
+ case 256:
+ case 512:
+ case 1024:
+ case 2048:
+ break;
+ }
+
+ cntl |= CURSOR_ENABLE |
+ CURSOR_GAMMA_ENABLE |
+ CURSOR_FORMAT_ARGB |
+ CURSOR_STRIDE(stride);
+
+ size = (height << 12) | width;
+ }
+
+ if (intel_crtc->cursor_cntl != 0 &&
+ (intel_crtc->cursor_base != base ||
+ intel_crtc->cursor_size != size ||
+ intel_crtc->cursor_cntl != cntl)) {
+ /* On these chipsets we can only modify the base/size/stride
+ * whilst the cursor is disabled.
+ */
+ I915_WRITE(_CURACNTR, 0);
+ POSTING_READ(_CURACNTR);
+ intel_crtc->cursor_cntl = 0;
+ }
+
+ if (intel_crtc->cursor_base != base) {
+ I915_WRITE(_CURABASE, base);
+ intel_crtc->cursor_base = base;
+ }
+
+ if (intel_crtc->cursor_size != size) {
+ I915_WRITE(CURSIZE, size);
+ intel_crtc->cursor_size = size;
+ }
+
+ if (intel_crtc->cursor_cntl != cntl) {
+ I915_WRITE(_CURACNTR, cntl);
+ POSTING_READ(_CURACNTR);
+ intel_crtc->cursor_cntl = cntl;
+ }
+}
+
+static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ uint32_t cntl;
+
+ cntl = 0;
+ if (base) {
+ cntl = MCURSOR_GAMMA_ENABLE;
+ switch (intel_crtc->base.cursor->state->crtc_w) {
+ case 64:
+ cntl |= CURSOR_MODE_64_ARGB_AX;
+ break;
+ case 128:
+ cntl |= CURSOR_MODE_128_ARGB_AX;
+ break;
+ case 256:
+ cntl |= CURSOR_MODE_256_ARGB_AX;
+ break;
+ default:
+ MISSING_CASE(intel_crtc->base.cursor->state->crtc_w);
+ return;
+ }
+ cntl |= pipe << 28; /* Connect to correct pipe */
+
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+ cntl |= CURSOR_PIPE_CSC_ENABLE;
+ }
+
+ if (crtc->cursor->state->rotation == BIT(DRM_ROTATE_180))
+ cntl |= CURSOR_ROTATE_180;
+
+ if (intel_crtc->cursor_cntl != cntl) {
+ I915_WRITE(CURCNTR(pipe), cntl);
+ POSTING_READ(CURCNTR(pipe));
+ intel_crtc->cursor_cntl = cntl;
+ }
+
+ /* and commit changes on next vblank */
+ I915_WRITE(CURBASE(pipe), base);
+ POSTING_READ(CURBASE(pipe));
+
+ intel_crtc->cursor_base = base;
+}
+
+/* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
+static void intel_crtc_update_cursor(struct drm_crtc *crtc,
+ bool on)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ int x = crtc->cursor_x;
+ int y = crtc->cursor_y;
+ u32 base = 0, pos = 0;
+
+ if (on)
+ base = intel_crtc->cursor_addr;
+
+ if (x >= intel_crtc->config->pipe_src_w)
+ base = 0;
+
+ if (y >= intel_crtc->config->pipe_src_h)
+ base = 0;
+
+ if (x < 0) {
+ if (x + intel_crtc->base.cursor->state->crtc_w <= 0)
+ base = 0;
+
+ pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
+ x = -x;
+ }
+ pos |= x << CURSOR_X_SHIFT;
+
+ if (y < 0) {
+ if (y + intel_crtc->base.cursor->state->crtc_h <= 0)
+ base = 0;
+
+ pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
+ y = -y;
+ }
+ pos |= y << CURSOR_Y_SHIFT;
+
+ if (base == 0 && intel_crtc->cursor_base == 0)
+ return;
+
+ I915_WRITE(CURPOS(pipe), pos);
+
+ /* ILK+ do this automagically */
+ if (HAS_GMCH_DISPLAY(dev) &&
+ crtc->cursor->state->rotation == BIT(DRM_ROTATE_180)) {
+ base += (intel_crtc->base.cursor->state->crtc_h *
+ intel_crtc->base.cursor->state->crtc_w - 1) * 4;
+ }
+
+ if (IS_845G(dev) || IS_I865G(dev))
+ i845_update_cursor(crtc, base);
+ else
+ i9xx_update_cursor(crtc, base);
+}
+
+static bool cursor_size_ok(struct drm_device *dev,
+ uint32_t width, uint32_t height)
+{
+ if (width == 0 || height == 0)
+ return false;
+
+ /*
+ * 845g/865g are special in that they are only limited by
+ * the width of their cursors, the height is arbitrary up to
+ * the precision of the register. Everything else requires
+ * square cursors, limited to a few power-of-two sizes.
+ */
+ if (IS_845G(dev) || IS_I865G(dev)) {
+ if ((width & 63) != 0)
+ return false;
+
+ if (width > (IS_845G(dev) ? 64 : 512))
+ return false;
+
+ if (height > 1023)
+ return false;
+ } else {
+ switch (width | height) {
+ case 256:
+ case 128:
+ if (IS_GEN2(dev))
+ return false;
+ case 64:
+ break;
+ default:
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, uint32_t start, uint32_t size)
+{
+ int end = (start + size > 256) ? 256 : start + size, i;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ for (i = start; i < end; i++) {
+ intel_crtc->lut_r[i] = red[i] >> 8;
+ intel_crtc->lut_g[i] = green[i] >> 8;
+ intel_crtc->lut_b[i] = blue[i] >> 8;
+ }
+
+ intel_crtc_load_lut(crtc);
+}
+
+/* VESA 640x480x72Hz mode to set on the pipe */
+static struct drm_display_mode load_detect_mode = {
+ DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
+ 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
+};
+
+struct drm_framebuffer *
+__intel_framebuffer_create(struct drm_device *dev,
+ struct drm_mode_fb_cmd2 *mode_cmd,
+ struct drm_i915_gem_object *obj)
+{
+ struct intel_framebuffer *intel_fb;
+ int ret;
+
+ intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
+ if (!intel_fb) {
+ drm_gem_object_unreference(&obj->base);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
+ if (ret)
+ goto err;
+
+ return &intel_fb->base;
+err:
+ drm_gem_object_unreference(&obj->base);
+ kfree(intel_fb);
+
+ return ERR_PTR(ret);
+}
+
+static struct drm_framebuffer *
+intel_framebuffer_create(struct drm_device *dev,
+ struct drm_mode_fb_cmd2 *mode_cmd,
+ struct drm_i915_gem_object *obj)
+{
+ struct drm_framebuffer *fb;
+ int ret;
+
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ return ERR_PTR(ret);
+ fb = __intel_framebuffer_create(dev, mode_cmd, obj);
+ mutex_unlock(&dev->struct_mutex);
+
+ return fb;
+}
+
+static u32
+intel_framebuffer_pitch_for_width(int width, int bpp)
+{
+ u32 pitch = DIV_ROUND_UP(width * bpp, 8);
+ return ALIGN(pitch, 64);
+}
+
+static u32
+intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
+{
+ u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
+ return PAGE_ALIGN(pitch * mode->vdisplay);
+}
+
+static struct drm_framebuffer *
+intel_framebuffer_create_for_mode(struct drm_device *dev,
+ struct drm_display_mode *mode,
+ int depth, int bpp)
+{
+ struct drm_i915_gem_object *obj;
+ struct drm_mode_fb_cmd2 mode_cmd = { 0 };
+
+ obj = i915_gem_alloc_object(dev,
+ intel_framebuffer_size_for_mode(mode, bpp));
+ if (obj == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ mode_cmd.width = mode->hdisplay;
+ mode_cmd.height = mode->vdisplay;
+ mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
+ bpp);
+ mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
+
+ return intel_framebuffer_create(dev, &mode_cmd, obj);
+}
+
+static struct drm_framebuffer *
+mode_fits_in_fbdev(struct drm_device *dev,
+ struct drm_display_mode *mode)
+{
+#ifdef CONFIG_DRM_I915_FBDEV
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_gem_object *obj;
+ struct drm_framebuffer *fb;
+
+ if (!dev_priv->fbdev)
+ return NULL;
+
+ if (!dev_priv->fbdev->fb)
+ return NULL;
+
+ obj = dev_priv->fbdev->fb->obj;
+ BUG_ON(!obj);
+
+ fb = &dev_priv->fbdev->fb->base;
+ if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
+ fb->bits_per_pixel))
+ return NULL;
+
+ if (obj->base.size < mode->vdisplay * fb->pitches[0])
+ return NULL;
+
+ return fb;
+#else
+ return NULL;
+#endif
+}
+
+bool intel_get_load_detect_pipe(struct drm_connector *connector,
+ struct drm_display_mode *mode,
+ struct intel_load_detect_pipe *old,
+ struct drm_modeset_acquire_ctx *ctx)
+{
+ struct intel_crtc *intel_crtc;
+ struct intel_encoder *intel_encoder =
+ intel_attached_encoder(connector);
+ struct drm_crtc *possible_crtc;
+ struct drm_encoder *encoder = &intel_encoder->base;
+ struct drm_crtc *crtc = NULL;
+ struct drm_device *dev = encoder->dev;
+ struct drm_framebuffer *fb;
+ struct drm_mode_config *config = &dev->mode_config;
+ struct drm_atomic_state *state = NULL;
+ struct drm_connector_state *connector_state;
+ int ret, i = -1;
+
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
+ connector->base.id, connector->name,
+ encoder->base.id, encoder->name);
+
+retry:
+ ret = drm_modeset_lock(&config->connection_mutex, ctx);
+ if (ret)
+ goto fail_unlock;
+
+ /*
+ * Algorithm gets a little messy:
+ *
+ * - if the connector already has an assigned crtc, use it (but make
+ * sure it's on first)
+ *
+ * - try to find the first unused crtc that can drive this connector,
+ * and use that if we find one
+ */
+
+ /* See if we already have a CRTC for this connector */
+ if (encoder->crtc) {
+ crtc = encoder->crtc;
+
+ ret = drm_modeset_lock(&crtc->mutex, ctx);
+ if (ret)
+ goto fail_unlock;
+ ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
+ if (ret)
+ goto fail_unlock;
+
+ old->dpms_mode = connector->dpms;
+ old->load_detect_temp = false;
+
+ /* Make sure the crtc and connector are running */
+ if (connector->dpms != DRM_MODE_DPMS_ON)
+ connector->funcs->dpms(connector, DRM_MODE_DPMS_ON);
+
+ return true;
+ }
+
+ /* Find an unused one (if possible) */
+ for_each_crtc(dev, possible_crtc) {
+ i++;
+ if (!(encoder->possible_crtcs & (1 << i)))
+ continue;
+ if (possible_crtc->state->enable)
+ continue;
+ /* This can occur when applying the pipe A quirk on resume. */
+ if (to_intel_crtc(possible_crtc)->new_enabled)
+ continue;
+
+ crtc = possible_crtc;
+ break;
+ }
+
+ /*
+ * If we didn't find an unused CRTC, don't use any.
+ */
+ if (!crtc) {
+ DRM_DEBUG_KMS("no pipe available for load-detect\n");
+ goto fail_unlock;
+ }
+
+ ret = drm_modeset_lock(&crtc->mutex, ctx);
+ if (ret)
+ goto fail_unlock;
+ ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
+ if (ret)
+ goto fail_unlock;
+ intel_encoder->new_crtc = to_intel_crtc(crtc);
+ to_intel_connector(connector)->new_encoder = intel_encoder;
+
+ intel_crtc = to_intel_crtc(crtc);
+ intel_crtc->new_enabled = true;
+ intel_crtc->new_config = intel_crtc->config;
+ old->dpms_mode = connector->dpms;
+ old->load_detect_temp = true;
+ old->release_fb = NULL;
+
+ state = drm_atomic_state_alloc(dev);
+ if (!state)
+ return false;
+
+ state->acquire_ctx = ctx;
+
+ connector_state = drm_atomic_get_connector_state(state, connector);
+ if (IS_ERR(connector_state)) {
+ ret = PTR_ERR(connector_state);
+ goto fail;
+ }
+
+ connector_state->crtc = crtc;
+ connector_state->best_encoder = &intel_encoder->base;
+
+ if (!mode)
+ mode = &load_detect_mode;
+
+ /* We need a framebuffer large enough to accommodate all accesses
+ * that the plane may generate whilst we perform load detection.
+ * We can not rely on the fbcon either being present (we get called
+ * during its initialisation to detect all boot displays, or it may
+ * not even exist) or that it is large enough to satisfy the
+ * requested mode.
+ */
+ fb = mode_fits_in_fbdev(dev, mode);
+ if (fb == NULL) {
+ DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
+ fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
+ old->release_fb = fb;
+ } else
+ DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
+ if (IS_ERR(fb)) {
+ DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
+ goto fail;
+ }
+
+ if (intel_set_mode(crtc, mode, 0, 0, fb, state)) {
+ DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
+ if (old->release_fb)
+ old->release_fb->funcs->destroy(old->release_fb);
+ goto fail;
+ }
+ crtc->primary->crtc = crtc;
+
+ /* let the connector get through one full cycle before testing */
+ intel_wait_for_vblank(dev, intel_crtc->pipe);
+ return true;
+
+ fail:
+ intel_crtc->new_enabled = crtc->state->enable;
+ if (intel_crtc->new_enabled)
+ intel_crtc->new_config = intel_crtc->config;
+ else
+ intel_crtc->new_config = NULL;
+fail_unlock:
+ if (state) {
+ drm_atomic_state_free(state);
+ state = NULL;
+ }
+
+ if (ret == -EDEADLK) {
+ drm_modeset_backoff(ctx);
+ goto retry;
+ }
+
+ return false;
+}
+
+void intel_release_load_detect_pipe(struct drm_connector *connector,
+ struct intel_load_detect_pipe *old,
+ struct drm_modeset_acquire_ctx *ctx)
+{
+ struct drm_device *dev = connector->dev;
+ struct intel_encoder *intel_encoder =
+ intel_attached_encoder(connector);
+ struct drm_encoder *encoder = &intel_encoder->base;
+ struct drm_crtc *crtc = encoder->crtc;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_atomic_state *state;
+ struct drm_connector_state *connector_state;
+
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
+ connector->base.id, connector->name,
+ encoder->base.id, encoder->name);
+
+ if (old->load_detect_temp) {
+ state = drm_atomic_state_alloc(dev);
+ if (!state)
+ goto fail;
+
+ state->acquire_ctx = ctx;
+
+ connector_state = drm_atomic_get_connector_state(state, connector);
+ if (IS_ERR(connector_state))
+ goto fail;
+
+ to_intel_connector(connector)->new_encoder = NULL;
+ intel_encoder->new_crtc = NULL;
+ intel_crtc->new_enabled = false;
+ intel_crtc->new_config = NULL;
+
+ connector_state->best_encoder = NULL;
+ connector_state->crtc = NULL;
+
+ intel_set_mode(crtc, NULL, 0, 0, NULL, state);
+
+ drm_atomic_state_free(state);
+
+ if (old->release_fb) {
+ drm_framebuffer_unregister_private(old->release_fb);
+ drm_framebuffer_unreference(old->release_fb);
+ }
+
+ return;
+ }
+
+ /* Switch crtc and encoder back off if necessary */
+ if (old->dpms_mode != DRM_MODE_DPMS_ON)
+ connector->funcs->dpms(connector, old->dpms_mode);
+
+ return;
+fail:
+ DRM_DEBUG_KMS("Couldn't release load detect pipe.\n");
+ drm_atomic_state_free(state);
+}
+
+static int i9xx_pll_refclk(struct drm_device *dev,
+ const struct intel_crtc_state *pipe_config)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dpll = pipe_config->dpll_hw_state.dpll;
+
+ if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
+ return dev_priv->vbt.lvds_ssc_freq;
+ else if (HAS_PCH_SPLIT(dev))
+ return 120000;
+ else if (!IS_GEN2(dev))
+ return 96000;
+ else
+ return 48000;
+}
+
+/* Returns the clock of the currently programmed mode of the given pipe. */
+static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int pipe = pipe_config->cpu_transcoder;
+ u32 dpll = pipe_config->dpll_hw_state.dpll;
+ u32 fp;
+ intel_clock_t clock;
+ int refclk = i9xx_pll_refclk(dev, pipe_config);
+
+ if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
+ fp = pipe_config->dpll_hw_state.fp0;
+ else
+ fp = pipe_config->dpll_hw_state.fp1;
+
+ clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
+ if (IS_PINEVIEW(dev)) {
+ clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
+ clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
+ } else {
+ clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
+ clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
+ }
+
+ if (!IS_GEN2(dev)) {
+ if (IS_PINEVIEW(dev))
+ clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
+ DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
+ else
+ clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
+ DPLL_FPA01_P1_POST_DIV_SHIFT);
+
+ switch (dpll & DPLL_MODE_MASK) {
+ case DPLLB_MODE_DAC_SERIAL:
+ clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
+ 5 : 10;
+ break;
+ case DPLLB_MODE_LVDS:
+ clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
+ 7 : 14;
+ break;
+ default:
+ DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
+ "mode\n", (int)(dpll & DPLL_MODE_MASK));
+ return;
+ }
+
+ if (IS_PINEVIEW(dev))
+ pineview_clock(refclk, &clock);
+ else
+ i9xx_clock(refclk, &clock);
+ } else {
+ u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
+ bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
+
+ if (is_lvds) {
+ clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
+ DPLL_FPA01_P1_POST_DIV_SHIFT);
+
+ if (lvds & LVDS_CLKB_POWER_UP)
+ clock.p2 = 7;
+ else
+ clock.p2 = 14;
+ } else {
+ if (dpll & PLL_P1_DIVIDE_BY_TWO)
+ clock.p1 = 2;
+ else {
+ clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
+ DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
+ }
+ if (dpll & PLL_P2_DIVIDE_BY_4)
+ clock.p2 = 4;
+ else
+ clock.p2 = 2;
+ }
+
+ i9xx_clock(refclk, &clock);
+ }
+
+ /*
+ * This value includes pixel_multiplier. We will use
+ * port_clock to compute adjusted_mode.crtc_clock in the
+ * encoder's get_config() function.
+ */
+ pipe_config->port_clock = clock.dot;
+}
+
+int intel_dotclock_calculate(int link_freq,
+ const struct intel_link_m_n *m_n)
+{
+ /*
+ * The calculation for the data clock is:
+ * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
+ * But we want to avoid losing precison if possible, so:
+ * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
+ *
+ * and the link clock is simpler:
+ * link_clock = (m * link_clock) / n
+ */
+
+ if (!m_n->link_n)
+ return 0;
+
+ return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
+}
+
+static void ironlake_pch_clock_get(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+
+ /* read out port_clock from the DPLL */
+ i9xx_crtc_clock_get(crtc, pipe_config);
+
+ /*
+ * This value does not include pixel_multiplier.
+ * We will check that port_clock and adjusted_mode.crtc_clock
+ * agree once we know their relationship in the encoder's
+ * get_config() function.
+ */
+ pipe_config->base.adjusted_mode.crtc_clock =
+ intel_dotclock_calculate(intel_fdi_link_freq(dev) * 10000,
+ &pipe_config->fdi_m_n);
+}
+
+/** Returns the currently programmed mode of the given pipe. */
+struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
+ struct drm_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+ struct drm_display_mode *mode;
+ struct intel_crtc_state pipe_config;
+ int htot = I915_READ(HTOTAL(cpu_transcoder));
+ int hsync = I915_READ(HSYNC(cpu_transcoder));
+ int vtot = I915_READ(VTOTAL(cpu_transcoder));
+ int vsync = I915_READ(VSYNC(cpu_transcoder));
+ enum pipe pipe = intel_crtc->pipe;
+
+ mode = kzalloc(sizeof(*mode), GFP_KERNEL);
+ if (!mode)
+ return NULL;
+
+ /*
+ * Construct a pipe_config sufficient for getting the clock info
+ * back out of crtc_clock_get.
+ *
+ * Note, if LVDS ever uses a non-1 pixel multiplier, we'll need
+ * to use a real value here instead.
+ */
+ pipe_config.cpu_transcoder = (enum transcoder) pipe;
+ pipe_config.pixel_multiplier = 1;
+ pipe_config.dpll_hw_state.dpll = I915_READ(DPLL(pipe));
+ pipe_config.dpll_hw_state.fp0 = I915_READ(FP0(pipe));
+ pipe_config.dpll_hw_state.fp1 = I915_READ(FP1(pipe));
+ i9xx_crtc_clock_get(intel_crtc, &pipe_config);
+
+ mode->clock = pipe_config.port_clock / pipe_config.pixel_multiplier;
+ mode->hdisplay = (htot & 0xffff) + 1;
+ mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
+ mode->hsync_start = (hsync & 0xffff) + 1;
+ mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
+ mode->vdisplay = (vtot & 0xffff) + 1;
+ mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
+ mode->vsync_start = (vsync & 0xffff) + 1;
+ mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
+
+ drm_mode_set_name(mode);
+
+ return mode;
+}
+
+static void intel_decrease_pllclock(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ if (!HAS_GMCH_DISPLAY(dev))
+ return;
+
+ if (!dev_priv->lvds_downclock_avail)
+ return;
+
+ /*
+ * Since this is called by a timer, we should never get here in
+ * the manual case.
+ */
+ if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
+ int pipe = intel_crtc->pipe;
+ int dpll_reg = DPLL(pipe);
+ int dpll;
+
+ DRM_DEBUG_DRIVER("downclocking LVDS\n");
+
+ assert_panel_unlocked(dev_priv, pipe);
+
+ dpll = I915_READ(dpll_reg);
+ dpll |= DISPLAY_RATE_SELECT_FPA1;
+ I915_WRITE(dpll_reg, dpll);
+ intel_wait_for_vblank(dev, pipe);
+ dpll = I915_READ(dpll_reg);
+ if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
+ DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
+ }
+
+}
+
+void intel_mark_busy(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->mm.busy)
+ return;
+
+ intel_runtime_pm_get(dev_priv);
+ i915_update_gfx_val(dev_priv);
+ if (INTEL_INFO(dev)->gen >= 6)
+ gen6_rps_busy(dev_priv);
+ dev_priv->mm.busy = true;
+}
+
+void intel_mark_idle(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc;
+
+ if (!dev_priv->mm.busy)
+ return;
+
+ dev_priv->mm.busy = false;
+
+ for_each_crtc(dev, crtc) {
+ if (!crtc->primary->fb)
+ continue;
+
+ intel_decrease_pllclock(crtc);
+ }
+
+ if (INTEL_INFO(dev)->gen >= 6)
+ gen6_rps_idle(dev->dev_private);
+
+ intel_runtime_pm_put(dev_priv);
+}
+
+static void intel_crtc_set_state(struct intel_crtc *crtc,
+ struct intel_crtc_state *crtc_state)
+{
+ kfree(crtc->config);
+ crtc->config = crtc_state;
+ crtc->base.state = &crtc_state->base;
+}
+
+static void intel_crtc_destroy(struct drm_crtc *crtc)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
+ struct intel_unpin_work *work;
+
+ spin_lock_irq(&dev->event_lock);
+ work = intel_crtc->unpin_work;
+ intel_crtc->unpin_work = NULL;
+ spin_unlock_irq(&dev->event_lock);
+
+ if (work) {
+ cancel_work_sync(&work->work);
+ kfree(work);
+ }
+
+ intel_crtc_set_state(intel_crtc, NULL);
+ drm_crtc_cleanup(crtc);
+
+ kfree(intel_crtc);
+}
+
+static void intel_unpin_work_fn(struct work_struct *__work)
+{
+ struct intel_unpin_work *work =
+ container_of(__work, struct intel_unpin_work, work);
+ struct drm_device *dev = work->crtc->dev;
+ enum pipe pipe = to_intel_crtc(work->crtc)->pipe;
+
+ mutex_lock(&dev->struct_mutex);
+ intel_unpin_fb_obj(work->old_fb, work->crtc->primary->state);
+ drm_gem_object_unreference(&work->pending_flip_obj->base);
+
+ intel_fbc_update(dev);
+
+ if (work->flip_queued_req)
+ i915_gem_request_assign(&work->flip_queued_req, NULL);
+ mutex_unlock(&dev->struct_mutex);
+
+ intel_frontbuffer_flip_complete(dev, INTEL_FRONTBUFFER_PRIMARY(pipe));
+ drm_framebuffer_unreference(work->old_fb);
+
+ BUG_ON(atomic_read(&to_intel_crtc(work->crtc)->unpin_work_count) == 0);
+ atomic_dec(&to_intel_crtc(work->crtc)->unpin_work_count);
+
+ kfree(work);
+}
+
+static void do_intel_finish_page_flip(struct drm_device *dev,
+ struct drm_crtc *crtc)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_unpin_work *work;
+ unsigned long flags;
+
+ /* Ignore early vblank irqs */
+ if (intel_crtc == NULL)
+ return;
+
+ /*
+ * This is called both by irq handlers and the reset code (to complete
+ * lost pageflips) so needs the full irqsave spinlocks.
+ */
+ spin_lock_irqsave(&dev->event_lock, flags);
+ work = intel_crtc->unpin_work;
+
+ /* Ensure we don't miss a work->pending update ... */
+ smp_rmb();
+
+ if (work == NULL || atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ return;
+ }
+
+ page_flip_completed(intel_crtc);
+
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
+void intel_finish_page_flip(struct drm_device *dev, int pipe)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
+
+ do_intel_finish_page_flip(dev, crtc);
+}
+
+void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
+
+ do_intel_finish_page_flip(dev, crtc);
+}
+
+/* Is 'a' after or equal to 'b'? */
+static bool g4x_flip_count_after_eq(u32 a, u32 b)
+{
+ return !((a - b) & 0x80000000);
+}
+
+static bool page_flip_finished(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (i915_reset_in_progress(&dev_priv->gpu_error) ||
+ crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
+ return true;
+
+ /*
+ * The relevant registers doen't exist on pre-ctg.
+ * As the flip done interrupt doesn't trigger for mmio
+ * flips on gmch platforms, a flip count check isn't
+ * really needed there. But since ctg has the registers,
+ * include it in the check anyway.
+ */
+ if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
+ return true;
+
+ /*
+ * A DSPSURFLIVE check isn't enough in case the mmio and CS flips
+ * used the same base address. In that case the mmio flip might
+ * have completed, but the CS hasn't even executed the flip yet.
+ *
+ * A flip count check isn't enough as the CS might have updated
+ * the base address just after start of vblank, but before we
+ * managed to process the interrupt. This means we'd complete the
+ * CS flip too soon.
+ *
+ * Combining both checks should get us a good enough result. It may
+ * still happen that the CS flip has been executed, but has not
+ * yet actually completed. But in case the base address is the same
+ * anyway, we don't really care.
+ */
+ return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
+ crtc->unpin_work->gtt_offset &&
+ g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_GM45(crtc->pipe)),
+ crtc->unpin_work->flip_count);
+}
+
+void intel_prepare_page_flip(struct drm_device *dev, int plane)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc =
+ to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
+ unsigned long flags;
+
+
+ /*
+ * This is called both by irq handlers and the reset code (to complete
+ * lost pageflips) so needs the full irqsave spinlocks.
+ *
+ * NB: An MMIO update of the plane base pointer will also
+ * generate a page-flip completion irq, i.e. every modeset
+ * is also accompanied by a spurious intel_prepare_page_flip().
+ */
+ spin_lock_irqsave(&dev->event_lock, flags);
+ if (intel_crtc->unpin_work && page_flip_finished(intel_crtc))
+ atomic_inc_not_zero(&intel_crtc->unpin_work->pending);
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
+static inline void intel_mark_page_flip_active(struct intel_crtc *intel_crtc)
+{
+ /* Ensure that the work item is consistent when activating it ... */
+ smp_wmb();
+ atomic_set(&intel_crtc->unpin_work->pending, INTEL_FLIP_PENDING);
+ /* and that it is marked active as soon as the irq could fire. */
+ smp_wmb();
+}
+
+static int intel_gen2_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj,
+ struct intel_engine_cs *ring,
+ uint32_t flags)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ u32 flip_mask;
+ int ret;
+
+ ret = intel_ring_begin(ring, 6);
+ if (ret)
+ return ret;
+
+ /* Can't queue multiple flips, so wait for the previous
+ * one to finish before executing the next.
+ */
+ if (intel_crtc->plane)
+ flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
+ else
+ flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
+ intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
+ intel_ring_emit(ring, MI_NOOP);
+ intel_ring_emit(ring, MI_DISPLAY_FLIP |
+ MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
+ intel_ring_emit(ring, fb->pitches[0]);
+ intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
+ intel_ring_emit(ring, 0); /* aux display base address, unused */
+
+ intel_mark_page_flip_active(intel_crtc);
+ __intel_ring_advance(ring);
+ return 0;
+}
+
+static int intel_gen3_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj,
+ struct intel_engine_cs *ring,
+ uint32_t flags)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ u32 flip_mask;
+ int ret;
+
+ ret = intel_ring_begin(ring, 6);
+ if (ret)
+ return ret;
+
+ if (intel_crtc->plane)
+ flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
+ else
+ flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
+ intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
+ intel_ring_emit(ring, MI_NOOP);
+ intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
+ MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
+ intel_ring_emit(ring, fb->pitches[0]);
+ intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
+ intel_ring_emit(ring, MI_NOOP);
+
+ intel_mark_page_flip_active(intel_crtc);
+ __intel_ring_advance(ring);
+ return 0;
+}
+
+static int intel_gen4_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj,
+ struct intel_engine_cs *ring,
+ uint32_t flags)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ uint32_t pf, pipesrc;
+ int ret;
+
+ ret = intel_ring_begin(ring, 4);
+ if (ret)
+ return ret;
+
+ /* i965+ uses the linear or tiled offsets from the
+ * Display Registers (which do not change across a page-flip)
+ * so we need only reprogram the base address.
+ */
+ intel_ring_emit(ring, MI_DISPLAY_FLIP |
+ MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
+ intel_ring_emit(ring, fb->pitches[0]);
+ intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset |
+ obj->tiling_mode);
+
+ /* XXX Enabling the panel-fitter across page-flip is so far
+ * untested on non-native modes, so ignore it for now.
+ * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
+ */
+ pf = 0;
+ pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
+ intel_ring_emit(ring, pf | pipesrc);
+
+ intel_mark_page_flip_active(intel_crtc);
+ __intel_ring_advance(ring);
+ return 0;
+}
+
+static int intel_gen6_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj,
+ struct intel_engine_cs *ring,
+ uint32_t flags)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ uint32_t pf, pipesrc;
+ int ret;
+
+ ret = intel_ring_begin(ring, 4);
+ if (ret)
+ return ret;
+
+ intel_ring_emit(ring, MI_DISPLAY_FLIP |
+ MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
+ intel_ring_emit(ring, fb->pitches[0] | obj->tiling_mode);
+ intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
+
+ /* Contrary to the suggestions in the documentation,
+ * "Enable Panel Fitter" does not seem to be required when page
+ * flipping with a non-native mode, and worse causes a normal
+ * modeset to fail.
+ * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
+ */
+ pf = 0;
+ pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
+ intel_ring_emit(ring, pf | pipesrc);
+
+ intel_mark_page_flip_active(intel_crtc);
+ __intel_ring_advance(ring);
+ return 0;
+}
+
+static int intel_gen7_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj,
+ struct intel_engine_cs *ring,
+ uint32_t flags)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ uint32_t plane_bit = 0;
+ int len, ret;
+
+ switch (intel_crtc->plane) {
+ case PLANE_A:
+ plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
+ break;
+ case PLANE_B:
+ plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
+ break;
+ case PLANE_C:
+ plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
+ break;
+ default:
+ WARN_ONCE(1, "unknown plane in flip command\n");
+ return -ENODEV;
+ }
+
+ len = 4;
+ if (ring->id == RCS) {
+ len += 6;
+ /*
+ * On Gen 8, SRM is now taking an extra dword to accommodate
+ * 48bits addresses, and we need a NOOP for the batch size to
+ * stay even.
+ */
+ if (IS_GEN8(dev))
+ len += 2;
+ }
+
+ /*
+ * BSpec MI_DISPLAY_FLIP for IVB:
+ * "The full packet must be contained within the same cache line."
+ *
+ * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
+ * cacheline, if we ever start emitting more commands before
+ * the MI_DISPLAY_FLIP we may need to first emit everything else,
+ * then do the cacheline alignment, and finally emit the
+ * MI_DISPLAY_FLIP.
+ */
+ ret = intel_ring_cacheline_align(ring);
+ if (ret)
+ return ret;
+
+ ret = intel_ring_begin(ring, len);
+ if (ret)
+ return ret;
+
+ /* Unmask the flip-done completion message. Note that the bspec says that
+ * we should do this for both the BCS and RCS, and that we must not unmask
+ * more than one flip event at any time (or ensure that one flip message
+ * can be sent by waiting for flip-done prior to queueing new flips).
+ * Experimentation says that BCS works despite DERRMR masking all
+ * flip-done completion events and that unmasking all planes at once
+ * for the RCS also doesn't appear to drop events. Setting the DERRMR
+ * to zero does lead to lockups within MI_DISPLAY_FLIP.
+ */
+ if (ring->id == RCS) {
+ intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
+ intel_ring_emit(ring, DERRMR);
+ intel_ring_emit(ring, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
+ DERRMR_PIPEB_PRI_FLIP_DONE |
+ DERRMR_PIPEC_PRI_FLIP_DONE));
+ if (IS_GEN8(dev))
+ intel_ring_emit(ring, MI_STORE_REGISTER_MEM_GEN8(1) |
+ MI_SRM_LRM_GLOBAL_GTT);
+ else
+ intel_ring_emit(ring, MI_STORE_REGISTER_MEM(1) |
+ MI_SRM_LRM_GLOBAL_GTT);
+ intel_ring_emit(ring, DERRMR);
+ intel_ring_emit(ring, ring->scratch.gtt_offset + 256);
+ if (IS_GEN8(dev)) {
+ intel_ring_emit(ring, 0);
+ intel_ring_emit(ring, MI_NOOP);
+ }
+ }
+
+ intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
+ intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
+ intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
+ intel_ring_emit(ring, (MI_NOOP));
+
+ intel_mark_page_flip_active(intel_crtc);
+ __intel_ring_advance(ring);
+ return 0;
+}
+
+static bool use_mmio_flip(struct intel_engine_cs *ring,
+ struct drm_i915_gem_object *obj)
+{
+ /*
+ * This is not being used for older platforms, because
+ * non-availability of flip done interrupt forces us to use
+ * CS flips. Older platforms derive flip done using some clever
+ * tricks involving the flip_pending status bits and vblank irqs.
+ * So using MMIO flips there would disrupt this mechanism.
+ */
+
+ if (ring == NULL)
+ return true;
+
+ if (INTEL_INFO(ring->dev)->gen < 5)
+ return false;
+
+ if (i915.use_mmio_flip < 0)
+ return false;
+ else if (i915.use_mmio_flip > 0)
+ return true;
+ else if (i915.enable_execlists)
+ return true;
+ else
+ return ring != i915_gem_request_get_ring(obj->last_read_req);
+}
+
+static void skl_do_mmio_flip(struct intel_crtc *intel_crtc)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ struct drm_i915_gem_object *obj = intel_fb->obj;
+ const enum pipe pipe = intel_crtc->pipe;
+ u32 ctl, stride;
+
+ ctl = I915_READ(PLANE_CTL(pipe, 0));
+ ctl &= ~PLANE_CTL_TILED_MASK;
+ if (obj->tiling_mode == I915_TILING_X)
+ ctl |= PLANE_CTL_TILED_X;
+
+ /*
+ * The stride is either expressed as a multiple of 64 bytes chunks for
+ * linear buffers or in number of tiles for tiled buffers.
+ */
+ stride = fb->pitches[0] >> 6;
+ if (obj->tiling_mode == I915_TILING_X)
+ stride = fb->pitches[0] >> 9; /* X tiles are 512 bytes wide */
+
+ /*
+ * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
+ * PLANE_SURF updates, the update is then guaranteed to be atomic.
+ */
+ I915_WRITE(PLANE_CTL(pipe, 0), ctl);
+ I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
+
+ I915_WRITE(PLANE_SURF(pipe, 0), intel_crtc->unpin_work->gtt_offset);
+ POSTING_READ(PLANE_SURF(pipe, 0));
+}
+
+static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_framebuffer *intel_fb =
+ to_intel_framebuffer(intel_crtc->base.primary->fb);
+ struct drm_i915_gem_object *obj = intel_fb->obj;
+ u32 dspcntr;
+ u32 reg;
+
+ reg = DSPCNTR(intel_crtc->plane);
+ dspcntr = I915_READ(reg);
+
+ if (obj->tiling_mode != I915_TILING_NONE)
+ dspcntr |= DISPPLANE_TILED;
+ else
+ dspcntr &= ~DISPPLANE_TILED;
+
+ I915_WRITE(reg, dspcntr);
+
+ I915_WRITE(DSPSURF(intel_crtc->plane),
+ intel_crtc->unpin_work->gtt_offset);
+ POSTING_READ(DSPSURF(intel_crtc->plane));
+
+}
+
+/*
+ * XXX: This is the temporary way to update the plane registers until we get
+ * around to using the usual plane update functions for MMIO flips
+ */
+static void intel_do_mmio_flip(struct intel_crtc *intel_crtc)
+{
+ struct drm_device *dev = intel_crtc->base.dev;
+ bool atomic_update;
+ u32 start_vbl_count;
+
+ intel_mark_page_flip_active(intel_crtc);
+
+ atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
+
+ if (INTEL_INFO(dev)->gen >= 9)
+ skl_do_mmio_flip(intel_crtc);
+ else
+ /* use_mmio_flip() retricts MMIO flips to ilk+ */
+ ilk_do_mmio_flip(intel_crtc);
+
+ if (atomic_update)
+ intel_pipe_update_end(intel_crtc, start_vbl_count);
+}
+
+static void intel_mmio_flip_work_func(struct work_struct *work)
+{
+ struct intel_crtc *crtc =
+ container_of(work, struct intel_crtc, mmio_flip.work);
+ struct intel_mmio_flip *mmio_flip;
+
+ mmio_flip = &crtc->mmio_flip;
+ if (mmio_flip->req)
+ WARN_ON(__i915_wait_request(mmio_flip->req,
+ crtc->reset_counter,
+ false, NULL, NULL) != 0);
+
+ intel_do_mmio_flip(crtc);
+ if (mmio_flip->req) {
+ mutex_lock(&crtc->base.dev->struct_mutex);
+ i915_gem_request_assign(&mmio_flip->req, NULL);
+ mutex_unlock(&crtc->base.dev->struct_mutex);
+ }
+}
+
+static int intel_queue_mmio_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj,
+ struct intel_engine_cs *ring,
+ uint32_t flags)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ i915_gem_request_assign(&intel_crtc->mmio_flip.req,
+ obj->last_write_req);
+
+ schedule_work(&intel_crtc->mmio_flip.work);
+
+ return 0;
+}
+
+static int intel_default_queue_flip(struct drm_device *dev,
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_i915_gem_object *obj,
+ struct intel_engine_cs *ring,
+ uint32_t flags)
+{
+ return -ENODEV;
+}
+
+static bool __intel_pageflip_stall_check(struct drm_device *dev,
+ struct drm_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_unpin_work *work = intel_crtc->unpin_work;
+ u32 addr;
+
+ if (atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE)
+ return true;
+
+ if (!work->enable_stall_check)
+ return false;
+
+ if (work->flip_ready_vblank == 0) {
+ if (work->flip_queued_req &&
+ !i915_gem_request_completed(work->flip_queued_req, true))
+ return false;
+
+ work->flip_ready_vblank = drm_crtc_vblank_count(crtc);
+ }
+
+ if (drm_crtc_vblank_count(crtc) - work->flip_ready_vblank < 3)
+ return false;
+
+ /* Potential stall - if we see that the flip has happened,
+ * assume a missed interrupt. */
+ if (INTEL_INFO(dev)->gen >= 4)
+ addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
+ else
+ addr = I915_READ(DSPADDR(intel_crtc->plane));
+
+ /* There is a potential issue here with a false positive after a flip
+ * to the same address. We could address this by checking for a
+ * non-incrementing frame counter.
+ */
+ return addr == work->gtt_offset;
+}
+
+void intel_check_page_flip(struct drm_device *dev, int pipe)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ WARN_ON_NONRT(!in_interrupt());
+
+ if (crtc == NULL)
+ return;
+
+ spin_lock(&dev->event_lock);
+ if (intel_crtc->unpin_work && __intel_pageflip_stall_check(dev, crtc)) {
+ WARN_ONCE(1, "Kicking stuck page flip: queued at %d, now %d\n",
+ intel_crtc->unpin_work->flip_queued_vblank,
+ drm_vblank_count(dev, pipe));
+ page_flip_completed(intel_crtc);
+ }
+ spin_unlock(&dev->event_lock);
+}
+
+static int intel_crtc_page_flip(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t page_flip_flags)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_framebuffer *old_fb = crtc->primary->fb;
+ struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_plane *primary = crtc->primary;
+ enum pipe pipe = intel_crtc->pipe;
+ struct intel_unpin_work *work;
+ struct intel_engine_cs *ring;
+ int ret;
+
+ /*
+ * drm_mode_page_flip_ioctl() should already catch this, but double
+ * check to be safe. In the future we may enable pageflipping from
+ * a disabled primary plane.
+ */
+ if (WARN_ON(intel_fb_obj(old_fb) == NULL))
+ return -EBUSY;
+
+ /* Can't change pixel format via MI display flips. */
+ if (fb->pixel_format != crtc->primary->fb->pixel_format)
+ return -EINVAL;
+
+ /*
+ * TILEOFF/LINOFF registers can't be changed via MI display flips.
+ * Note that pitch changes could also affect these register.
+ */
+ if (INTEL_INFO(dev)->gen > 3 &&
+ (fb->offsets[0] != crtc->primary->fb->offsets[0] ||
+ fb->pitches[0] != crtc->primary->fb->pitches[0]))
+ return -EINVAL;
+
+ if (i915_terminally_wedged(&dev_priv->gpu_error))
+ goto out_hang;
+
+ work = kzalloc(sizeof(*work), GFP_KERNEL);
+ if (work == NULL)
+ return -ENOMEM;
+
+ work->event = event;
+ work->crtc = crtc;
+ work->old_fb = old_fb;
+ INIT_WORK(&work->work, intel_unpin_work_fn);
+
+ ret = drm_crtc_vblank_get(crtc);
+ if (ret)
+ goto free_work;
+
+ /* We borrow the event spin lock for protecting unpin_work */
+ spin_lock_irq(&dev->event_lock);
+ if (intel_crtc->unpin_work) {
+ /* Before declaring the flip queue wedged, check if
+ * the hardware completed the operation behind our backs.
+ */
+ if (__intel_pageflip_stall_check(dev, crtc)) {
+ DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
+ page_flip_completed(intel_crtc);
+ } else {
+ DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
+ spin_unlock_irq(&dev->event_lock);
+
+ drm_crtc_vblank_put(crtc);
+ kfree(work);
+ return -EBUSY;
+ }
+ }
+ intel_crtc->unpin_work = work;
+ spin_unlock_irq(&dev->event_lock);
+
+ if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
+ flush_workqueue(dev_priv->wq);
+
+ /* Reference the objects for the scheduled work. */
+ drm_framebuffer_reference(work->old_fb);
+ drm_gem_object_reference(&obj->base);
+
+ crtc->primary->fb = fb;
+ update_state_fb(crtc->primary);
+
+ work->pending_flip_obj = obj;
+
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ goto cleanup;
+
+ atomic_inc(&intel_crtc->unpin_work_count);
+ intel_crtc->reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
+
+ if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
+ work->flip_count = I915_READ(PIPE_FLIPCOUNT_GM45(pipe)) + 1;
+
+ if (IS_VALLEYVIEW(dev)) {
+ ring = &dev_priv->ring[BCS];
+ if (obj->tiling_mode != intel_fb_obj(work->old_fb)->tiling_mode)
+ /* vlv: DISPLAY_FLIP fails to change tiling */
+ ring = NULL;
+ } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
+ ring = &dev_priv->ring[BCS];
+ } else if (INTEL_INFO(dev)->gen >= 7) {
+ ring = i915_gem_request_get_ring(obj->last_read_req);
+ if (ring == NULL || ring->id != RCS)
+ ring = &dev_priv->ring[BCS];
+ } else {
+ ring = &dev_priv->ring[RCS];
+ }
+
+ ret = intel_pin_and_fence_fb_obj(crtc->primary, fb,
+ crtc->primary->state, ring);
+ if (ret)
+ goto cleanup_pending;
+
+ work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary), obj)
+ + intel_crtc->dspaddr_offset;
+
+ if (use_mmio_flip(ring, obj)) {
+ ret = intel_queue_mmio_flip(dev, crtc, fb, obj, ring,
+ page_flip_flags);
+ if (ret)
+ goto cleanup_unpin;
+
+ i915_gem_request_assign(&work->flip_queued_req,
+ obj->last_write_req);
+ } else {
+ ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, ring,
+ page_flip_flags);
+ if (ret)
+ goto cleanup_unpin;
+
+ i915_gem_request_assign(&work->flip_queued_req,
+ intel_ring_get_request(ring));
+ }
+
+ work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
+ work->enable_stall_check = true;
+
+ i915_gem_track_fb(intel_fb_obj(work->old_fb), obj,
+ INTEL_FRONTBUFFER_PRIMARY(pipe));
+
+ intel_fbc_disable(dev);
+ intel_frontbuffer_flip_prepare(dev, INTEL_FRONTBUFFER_PRIMARY(pipe));
+ mutex_unlock(&dev->struct_mutex);
+
+ trace_i915_flip_request(intel_crtc->plane, obj);
+
+ return 0;
+
+cleanup_unpin:
+ intel_unpin_fb_obj(fb, crtc->primary->state);
+cleanup_pending:
+ atomic_dec(&intel_crtc->unpin_work_count);
+ mutex_unlock(&dev->struct_mutex);
+cleanup:
+ crtc->primary->fb = old_fb;
+ update_state_fb(crtc->primary);
+
+ drm_gem_object_unreference_unlocked(&obj->base);
+ drm_framebuffer_unreference(work->old_fb);
+
+ spin_lock_irq(&dev->event_lock);
+ intel_crtc->unpin_work = NULL;
+ spin_unlock_irq(&dev->event_lock);
+
+ drm_crtc_vblank_put(crtc);
+free_work:
+ kfree(work);
+
+ if (ret == -EIO) {
+out_hang:
+ ret = intel_plane_restore(primary);
+ if (ret == 0 && event) {
+ spin_lock_irq(&dev->event_lock);
+ drm_send_vblank_event(dev, pipe, event);
+ spin_unlock_irq(&dev->event_lock);
+ }
+ }
+ return ret;
+}
+
+static struct drm_crtc_helper_funcs intel_helper_funcs = {
+ .mode_set_base_atomic = intel_pipe_set_base_atomic,
+ .load_lut = intel_crtc_load_lut,
+ .atomic_begin = intel_begin_crtc_commit,
+ .atomic_flush = intel_finish_crtc_commit,
+};
+
+/**
+ * intel_modeset_update_staged_output_state
+ *
+ * Updates the staged output configuration state, e.g. after we've read out the
+ * current hw state.
+ */
+static void intel_modeset_update_staged_output_state(struct drm_device *dev)
+{
+ struct intel_crtc *crtc;
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+
+ for_each_intel_connector(dev, connector) {
+ connector->new_encoder =
+ to_intel_encoder(connector->base.encoder);
+ }
+
+ for_each_intel_encoder(dev, encoder) {
+ encoder->new_crtc =
+ to_intel_crtc(encoder->base.crtc);
+ }
+
+ for_each_intel_crtc(dev, crtc) {
+ crtc->new_enabled = crtc->base.state->enable;
+
+ if (crtc->new_enabled)
+ crtc->new_config = crtc->config;
+ else
+ crtc->new_config = NULL;
+ }
+}
+
+/* Transitional helper to copy current connector/encoder state to
+ * connector->state. This is needed so that code that is partially
+ * converted to atomic does the right thing.
+ */
+static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
+{
+ struct intel_connector *connector;
+
+ for_each_intel_connector(dev, connector) {
+ if (connector->base.encoder) {
+ connector->base.state->best_encoder =
+ connector->base.encoder;
+ connector->base.state->crtc =
+ connector->base.encoder->crtc;
+ } else {
+ connector->base.state->best_encoder = NULL;
+ connector->base.state->crtc = NULL;
+ }
+ }
+}
+
+/**
+ * intel_modeset_commit_output_state
+ *
+ * This function copies the stage display pipe configuration to the real one.
+ */
+static void intel_modeset_commit_output_state(struct drm_device *dev)
+{
+ struct intel_crtc *crtc;
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+
+ for_each_intel_connector(dev, connector) {
+ connector->base.encoder = &connector->new_encoder->base;
+ }
+
+ for_each_intel_encoder(dev, encoder) {
+ encoder->base.crtc = &encoder->new_crtc->base;
+ }
+
+ for_each_intel_crtc(dev, crtc) {
+ crtc->base.state->enable = crtc->new_enabled;
+ crtc->base.enabled = crtc->new_enabled;
+ }
+
+ intel_modeset_update_connector_atomic_state(dev);
+}
+
+static void
+connected_sink_compute_bpp(struct intel_connector *connector,
+ struct intel_crtc_state *pipe_config)
+{
+ int bpp = pipe_config->pipe_bpp;
+
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
+ connector->base.base.id,
+ connector->base.name);
+
+ /* Don't use an invalid EDID bpc value */
+ if (connector->base.display_info.bpc &&
+ connector->base.display_info.bpc * 3 < bpp) {
+ DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
+ bpp, connector->base.display_info.bpc*3);
+ pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
+ }
+
+ /* Clamp bpp to 8 on screens without EDID 1.4 */
+ if (connector->base.display_info.bpc == 0 && bpp > 24) {
+ DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
+ bpp);
+ pipe_config->pipe_bpp = 24;
+ }
+}
+
+static int
+compute_baseline_pipe_bpp(struct intel_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_atomic_state *state;
+ struct intel_connector *connector;
+ int bpp, i;
+
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_C8:
+ bpp = 8*3; /* since we go through a colormap */
+ break;
+ case DRM_FORMAT_XRGB1555:
+ case DRM_FORMAT_ARGB1555:
+ /* checked in intel_framebuffer_init already */
+ if (WARN_ON(INTEL_INFO(dev)->gen > 3))
+ return -EINVAL;
+ case DRM_FORMAT_RGB565:
+ bpp = 6*3; /* min is 18bpp */
+ break;
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ /* checked in intel_framebuffer_init already */
+ if (WARN_ON(INTEL_INFO(dev)->gen < 4))
+ return -EINVAL;
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ bpp = 8*3;
+ break;
+ case DRM_FORMAT_XRGB2101010:
+ case DRM_FORMAT_ARGB2101010:
+ case DRM_FORMAT_XBGR2101010:
+ case DRM_FORMAT_ABGR2101010:
+ /* checked in intel_framebuffer_init already */
+ if (WARN_ON(INTEL_INFO(dev)->gen < 4))
+ return -EINVAL;
+ bpp = 10*3;
+ break;
+ /* TODO: gen4+ supports 16 bpc floating point, too. */
+ default:
+ DRM_DEBUG_KMS("unsupported depth\n");
+ return -EINVAL;
+ }
+
+ pipe_config->pipe_bpp = bpp;
+
+ state = pipe_config->base.state;
+
+ /* Clamp display bpp to EDID value */
+ for (i = 0; i < state->num_connector; i++) {
+ if (!state->connectors[i])
+ continue;
+
+ connector = to_intel_connector(state->connectors[i]);
+ if (state->connector_states[i]->crtc != &crtc->base)
+ continue;
+
+ connected_sink_compute_bpp(connector, pipe_config);
+ }
+
+ return bpp;
+}
+
+static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
+{
+ DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
+ "type: 0x%x flags: 0x%x\n",
+ mode->crtc_clock,
+ mode->crtc_hdisplay, mode->crtc_hsync_start,
+ mode->crtc_hsync_end, mode->crtc_htotal,
+ mode->crtc_vdisplay, mode->crtc_vsync_start,
+ mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
+}
+
+static void intel_dump_pipe_config(struct intel_crtc *crtc,
+ struct intel_crtc_state *pipe_config,
+ const char *context)
+{
+ DRM_DEBUG_KMS("[CRTC:%d]%s config for pipe %c\n", crtc->base.base.id,
+ context, pipe_name(crtc->pipe));
+
+ DRM_DEBUG_KMS("cpu_transcoder: %c\n", transcoder_name(pipe_config->cpu_transcoder));
+ DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n",
+ pipe_config->pipe_bpp, pipe_config->dither);
+ DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
+ pipe_config->has_pch_encoder,
+ pipe_config->fdi_lanes,
+ pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
+ pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
+ pipe_config->fdi_m_n.tu);
+ DRM_DEBUG_KMS("dp: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
+ pipe_config->has_dp_encoder,
+ pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
+ pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
+ pipe_config->dp_m_n.tu);
+
+ DRM_DEBUG_KMS("dp: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
+ pipe_config->has_dp_encoder,
+ pipe_config->dp_m2_n2.gmch_m,
+ pipe_config->dp_m2_n2.gmch_n,
+ pipe_config->dp_m2_n2.link_m,
+ pipe_config->dp_m2_n2.link_n,
+ pipe_config->dp_m2_n2.tu);
+
+ DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
+ pipe_config->has_audio,
+ pipe_config->has_infoframe);
+
+ DRM_DEBUG_KMS("requested mode:\n");
+ drm_mode_debug_printmodeline(&pipe_config->base.mode);
+ DRM_DEBUG_KMS("adjusted mode:\n");
+ drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
+ intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
+ DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock);
+ DRM_DEBUG_KMS("pipe src size: %dx%d\n",
+ pipe_config->pipe_src_w, pipe_config->pipe_src_h);
+ DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
+ pipe_config->gmch_pfit.control,
+ pipe_config->gmch_pfit.pgm_ratios,
+ pipe_config->gmch_pfit.lvds_border_bits);
+ DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n",
+ pipe_config->pch_pfit.pos,
+ pipe_config->pch_pfit.size,
+ pipe_config->pch_pfit.enabled ? "enabled" : "disabled");
+ DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
+ DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
+}
+
+static bool encoders_cloneable(const struct intel_encoder *a,
+ const struct intel_encoder *b)
+{
+ /* masks could be asymmetric, so check both ways */
+ return a == b || (a->cloneable & (1 << b->type) &&
+ b->cloneable & (1 << a->type));
+}
+
+static bool check_single_encoder_cloning(struct intel_crtc *crtc,
+ struct intel_encoder *encoder)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct intel_encoder *source_encoder;
+
+ for_each_intel_encoder(dev, source_encoder) {
+ if (source_encoder->new_crtc != crtc)
+ continue;
+
+ if (!encoders_cloneable(encoder, source_encoder))
+ return false;
+ }
+
+ return true;
+}
+
+static bool check_encoder_cloning(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct intel_encoder *encoder;
+
+ for_each_intel_encoder(dev, encoder) {
+ if (encoder->new_crtc != crtc)
+ continue;
+
+ if (!check_single_encoder_cloning(crtc, encoder))
+ return false;
+ }
+
+ return true;
+}
+
+static bool check_digital_port_conflicts(struct drm_device *dev)
+{
+ struct intel_connector *connector;
+ unsigned int used_ports = 0;
+
+ /*
+ * Walk the connector list instead of the encoder
+ * list to detect the problem on ddi platforms
+ * where there's just one encoder per digital port.
+ */
+ for_each_intel_connector(dev, connector) {
+ struct intel_encoder *encoder = connector->new_encoder;
+
+ if (!encoder)
+ continue;
+
+ WARN_ON(!encoder->new_crtc);
+
+ switch (encoder->type) {
+ unsigned int port_mask;
+ case INTEL_OUTPUT_UNKNOWN:
+ if (WARN_ON(!HAS_DDI(dev)))
+ break;
+ case INTEL_OUTPUT_DISPLAYPORT:
+ case INTEL_OUTPUT_HDMI:
+ case INTEL_OUTPUT_EDP:
+ port_mask = 1 << enc_to_dig_port(&encoder->base)->port;
+
+ /* the same port mustn't appear more than once */
+ if (used_ports & port_mask)
+ return false;
+
+ used_ports |= port_mask;
+ default:
+ break;
+ }
+ }
+
+ return true;
+}
+
+static void
+clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
+{
+ struct drm_crtc_state tmp_state;
+
+ /* Clear only the intel specific part of the crtc state */
+ tmp_state = crtc_state->base;
+ memset(crtc_state, 0, sizeof *crtc_state);
+ crtc_state->base = tmp_state;
+}
+
+static struct intel_crtc_state *
+intel_modeset_pipe_config(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_display_mode *mode,
+ struct drm_atomic_state *state)
+{
+ struct drm_device *dev = crtc->dev;
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+ struct drm_connector_state *connector_state;
+ struct intel_crtc_state *pipe_config;
+ int plane_bpp, ret = -EINVAL;
+ int i;
+ bool retry = true;
+
+ if (!check_encoder_cloning(to_intel_crtc(crtc))) {
+ DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (!check_digital_port_conflicts(dev)) {
+ DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ pipe_config = intel_atomic_get_crtc_state(state, to_intel_crtc(crtc));
+ if (IS_ERR(pipe_config))
+ return pipe_config;
+
+ clear_intel_crtc_state(pipe_config);
+
+ pipe_config->base.crtc = crtc;
+ drm_mode_copy(&pipe_config->base.adjusted_mode, mode);
+ drm_mode_copy(&pipe_config->base.mode, mode);
+
+ pipe_config->cpu_transcoder =
+ (enum transcoder) to_intel_crtc(crtc)->pipe;
+ pipe_config->shared_dpll = DPLL_ID_PRIVATE;
+
+ /*
+ * Sanitize sync polarity flags based on requested ones. If neither
+ * positive or negative polarity is requested, treat this as meaning
+ * negative polarity.
+ */
+ if (!(pipe_config->base.adjusted_mode.flags &
+ (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
+ pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
+
+ if (!(pipe_config->base.adjusted_mode.flags &
+ (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
+ pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
+
+ /* Compute a starting value for pipe_config->pipe_bpp taking the source
+ * plane pixel format and any sink constraints into account. Returns the
+ * source plane bpp so that dithering can be selected on mismatches
+ * after encoders and crtc also have had their say. */
+ plane_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
+ fb, pipe_config);
+ if (plane_bpp < 0)
+ goto fail;
+
+ /*
+ * Determine the real pipe dimensions. Note that stereo modes can
+ * increase the actual pipe size due to the frame doubling and
+ * insertion of additional space for blanks between the frame. This
+ * is stored in the crtc timings. We use the requested mode to do this
+ * computation to clearly distinguish it from the adjusted mode, which
+ * can be changed by the connectors in the below retry loop.
+ */
+ drm_crtc_get_hv_timing(&pipe_config->base.mode,
+ &pipe_config->pipe_src_w,
+ &pipe_config->pipe_src_h);
+
+encoder_retry:
+ /* Ensure the port clock defaults are reset when retrying. */
+ pipe_config->port_clock = 0;
+ pipe_config->pixel_multiplier = 1;
+
+ /* Fill in default crtc timings, allow encoders to overwrite them. */
+ drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
+ CRTC_STEREO_DOUBLE);
+
+ /* Pass our mode to the connectors and the CRTC to give them a chance to
+ * adjust it according to limitations or connector properties, and also
+ * a chance to reject the mode entirely.
+ */
+ for (i = 0; i < state->num_connector; i++) {
+ connector = to_intel_connector(state->connectors[i]);
+ if (!connector)
+ continue;
+
+ connector_state = state->connector_states[i];
+ if (connector_state->crtc != crtc)
+ continue;
+
+ encoder = to_intel_encoder(connector_state->best_encoder);
+
+ if (!(encoder->compute_config(encoder, pipe_config))) {
+ DRM_DEBUG_KMS("Encoder config failure\n");
+ goto fail;
+ }
+ }
+
+ /* Set default port clock if not overwritten by the encoder. Needs to be
+ * done afterwards in case the encoder adjusts the mode. */
+ if (!pipe_config->port_clock)
+ pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
+ * pipe_config->pixel_multiplier;
+
+ ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
+ if (ret < 0) {
+ DRM_DEBUG_KMS("CRTC fixup failed\n");
+ goto fail;
+ }
+
+ if (ret == RETRY) {
+ if (WARN(!retry, "loop in pipe configuration computation\n")) {
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
+ retry = false;
+ goto encoder_retry;
+ }
+
+ pipe_config->dither = pipe_config->pipe_bpp != plane_bpp;
+ DRM_DEBUG_KMS("plane bpp: %i, pipe bpp: %i, dithering: %i\n",
+ plane_bpp, pipe_config->pipe_bpp, pipe_config->dither);
+
+ return pipe_config;
+fail:
+ return ERR_PTR(ret);
+}
+
+/* Computes which crtcs are affected and sets the relevant bits in the mask. For
+ * simplicity we use the crtc's pipe number (because it's easier to obtain). */
+static void
+intel_modeset_affected_pipes(struct drm_crtc *crtc, unsigned *modeset_pipes,
+ unsigned *prepare_pipes, unsigned *disable_pipes)
+{
+ struct intel_crtc *intel_crtc;
+ struct drm_device *dev = crtc->dev;
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+ struct drm_crtc *tmp_crtc;
+
+ *disable_pipes = *modeset_pipes = *prepare_pipes = 0;
+
+ /* Check which crtcs have changed outputs connected to them, these need
+ * to be part of the prepare_pipes mask. We don't (yet) support global
+ * modeset across multiple crtcs, so modeset_pipes will only have one
+ * bit set at most. */
+ for_each_intel_connector(dev, connector) {
+ if (connector->base.encoder == &connector->new_encoder->base)
+ continue;
+
+ if (connector->base.encoder) {
+ tmp_crtc = connector->base.encoder->crtc;
+
+ *prepare_pipes |= 1 << to_intel_crtc(tmp_crtc)->pipe;
+ }
+
+ if (connector->new_encoder)
+ *prepare_pipes |=
+ 1 << connector->new_encoder->new_crtc->pipe;
+ }
+
+ for_each_intel_encoder(dev, encoder) {
+ if (encoder->base.crtc == &encoder->new_crtc->base)
+ continue;
+
+ if (encoder->base.crtc) {
+ tmp_crtc = encoder->base.crtc;
+
+ *prepare_pipes |= 1 << to_intel_crtc(tmp_crtc)->pipe;
+ }
+
+ if (encoder->new_crtc)
+ *prepare_pipes |= 1 << encoder->new_crtc->pipe;
+ }
+
+ /* Check for pipes that will be enabled/disabled ... */
+ for_each_intel_crtc(dev, intel_crtc) {
+ if (intel_crtc->base.state->enable == intel_crtc->new_enabled)
+ continue;
+
+ if (!intel_crtc->new_enabled)
+ *disable_pipes |= 1 << intel_crtc->pipe;
+ else
+ *prepare_pipes |= 1 << intel_crtc->pipe;
+ }
+
+
+ /* set_mode is also used to update properties on life display pipes. */
+ intel_crtc = to_intel_crtc(crtc);
+ if (intel_crtc->new_enabled)
+ *prepare_pipes |= 1 << intel_crtc->pipe;
+
+ /*
+ * For simplicity do a full modeset on any pipe where the output routing
+ * changed. We could be more clever, but that would require us to be
+ * more careful with calling the relevant encoder->mode_set functions.
+ */
+ if (*prepare_pipes)
+ *modeset_pipes = *prepare_pipes;
+
+ /* ... and mask these out. */
+ *modeset_pipes &= ~(*disable_pipes);
+ *prepare_pipes &= ~(*disable_pipes);
+
+ /*
+ * HACK: We don't (yet) fully support global modesets. intel_set_config
+ * obies this rule, but the modeset restore mode of
+ * intel_modeset_setup_hw_state does not.
+ */
+ *modeset_pipes &= 1 << intel_crtc->pipe;
+ *prepare_pipes &= 1 << intel_crtc->pipe;
+
+ DRM_DEBUG_KMS("set mode pipe masks: modeset: %x, prepare: %x, disable: %x\n",
+ *modeset_pipes, *prepare_pipes, *disable_pipes);
+}
+
+static bool intel_crtc_in_use(struct drm_crtc *crtc)
+{
+ struct drm_encoder *encoder;
+ struct drm_device *dev = crtc->dev;
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
+ if (encoder->crtc == crtc)
+ return true;
+
+ return false;
+}
+
+static void
+intel_modeset_update_state(struct drm_device *dev, unsigned prepare_pipes)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_encoder *intel_encoder;
+ struct intel_crtc *intel_crtc;
+ struct drm_connector *connector;
+
+ intel_shared_dpll_commit(dev_priv);
+
+ for_each_intel_encoder(dev, intel_encoder) {
+ if (!intel_encoder->base.crtc)
+ continue;
+
+ intel_crtc = to_intel_crtc(intel_encoder->base.crtc);
+
+ if (prepare_pipes & (1 << intel_crtc->pipe))
+ intel_encoder->connectors_active = false;
+ }
+
+ intel_modeset_commit_output_state(dev);
+
+ /* Double check state. */
+ for_each_intel_crtc(dev, intel_crtc) {
+ WARN_ON(intel_crtc->base.state->enable != intel_crtc_in_use(&intel_crtc->base));
+ WARN_ON(intel_crtc->new_config &&
+ intel_crtc->new_config != intel_crtc->config);
+ WARN_ON(intel_crtc->base.state->enable != !!intel_crtc->new_config);
+ }
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ if (!connector->encoder || !connector->encoder->crtc)
+ continue;
+
+ intel_crtc = to_intel_crtc(connector->encoder->crtc);
+
+ if (prepare_pipes & (1 << intel_crtc->pipe)) {
+ struct drm_property *dpms_property =
+ dev->mode_config.dpms_property;
+
+ connector->dpms = DRM_MODE_DPMS_ON;
+ drm_object_property_set_value(&connector->base,
+ dpms_property,
+ DRM_MODE_DPMS_ON);
+
+ intel_encoder = to_intel_encoder(connector->encoder);
+ intel_encoder->connectors_active = true;
+ }
+ }
+
+}
+
+static bool intel_fuzzy_clock_check(int clock1, int clock2)
+{
+ int diff;
+
+ if (clock1 == clock2)
+ return true;
+
+ if (!clock1 || !clock2)
+ return false;
+
+ diff = abs(clock1 - clock2);
+
+ if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
+ return true;
+
+ return false;
+}
+
+#define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
+ list_for_each_entry((intel_crtc), \
+ &(dev)->mode_config.crtc_list, \
+ base.head) \
+ if (mask & (1 <<(intel_crtc)->pipe))
+
+static bool
+intel_pipe_config_compare(struct drm_device *dev,
+ struct intel_crtc_state *current_config,
+ struct intel_crtc_state *pipe_config)
+{
+#define PIPE_CONF_CHECK_X(name) \
+ if (current_config->name != pipe_config->name) { \
+ DRM_ERROR("mismatch in " #name " " \
+ "(expected 0x%08x, found 0x%08x)\n", \
+ current_config->name, \
+ pipe_config->name); \
+ return false; \
+ }
+
+#define PIPE_CONF_CHECK_I(name) \
+ if (current_config->name != pipe_config->name) { \
+ DRM_ERROR("mismatch in " #name " " \
+ "(expected %i, found %i)\n", \
+ current_config->name, \
+ pipe_config->name); \
+ return false; \
+ }
+
+/* This is required for BDW+ where there is only one set of registers for
+ * switching between high and low RR.
+ * This macro can be used whenever a comparison has to be made between one
+ * hw state and multiple sw state variables.
+ */
+#define PIPE_CONF_CHECK_I_ALT(name, alt_name) \
+ if ((current_config->name != pipe_config->name) && \
+ (current_config->alt_name != pipe_config->name)) { \
+ DRM_ERROR("mismatch in " #name " " \
+ "(expected %i or %i, found %i)\n", \
+ current_config->name, \
+ current_config->alt_name, \
+ pipe_config->name); \
+ return false; \
+ }
+
+#define PIPE_CONF_CHECK_FLAGS(name, mask) \
+ if ((current_config->name ^ pipe_config->name) & (mask)) { \
+ DRM_ERROR("mismatch in " #name "(" #mask ") " \
+ "(expected %i, found %i)\n", \
+ current_config->name & (mask), \
+ pipe_config->name & (mask)); \
+ return false; \
+ }
+
+#define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \
+ if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
+ DRM_ERROR("mismatch in " #name " " \
+ "(expected %i, found %i)\n", \
+ current_config->name, \
+ pipe_config->name); \
+ return false; \
+ }
+
+#define PIPE_CONF_QUIRK(quirk) \
+ ((current_config->quirks | pipe_config->quirks) & (quirk))
+
+ PIPE_CONF_CHECK_I(cpu_transcoder);
+
+ PIPE_CONF_CHECK_I(has_pch_encoder);
+ PIPE_CONF_CHECK_I(fdi_lanes);
+ PIPE_CONF_CHECK_I(fdi_m_n.gmch_m);
+ PIPE_CONF_CHECK_I(fdi_m_n.gmch_n);
+ PIPE_CONF_CHECK_I(fdi_m_n.link_m);
+ PIPE_CONF_CHECK_I(fdi_m_n.link_n);
+ PIPE_CONF_CHECK_I(fdi_m_n.tu);
+
+ PIPE_CONF_CHECK_I(has_dp_encoder);
+
+ if (INTEL_INFO(dev)->gen < 8) {
+ PIPE_CONF_CHECK_I(dp_m_n.gmch_m);
+ PIPE_CONF_CHECK_I(dp_m_n.gmch_n);
+ PIPE_CONF_CHECK_I(dp_m_n.link_m);
+ PIPE_CONF_CHECK_I(dp_m_n.link_n);
+ PIPE_CONF_CHECK_I(dp_m_n.tu);
+
+ if (current_config->has_drrs) {
+ PIPE_CONF_CHECK_I(dp_m2_n2.gmch_m);
+ PIPE_CONF_CHECK_I(dp_m2_n2.gmch_n);
+ PIPE_CONF_CHECK_I(dp_m2_n2.link_m);
+ PIPE_CONF_CHECK_I(dp_m2_n2.link_n);
+ PIPE_CONF_CHECK_I(dp_m2_n2.tu);
+ }
+ } else {
+ PIPE_CONF_CHECK_I_ALT(dp_m_n.gmch_m, dp_m2_n2.gmch_m);
+ PIPE_CONF_CHECK_I_ALT(dp_m_n.gmch_n, dp_m2_n2.gmch_n);
+ PIPE_CONF_CHECK_I_ALT(dp_m_n.link_m, dp_m2_n2.link_m);
+ PIPE_CONF_CHECK_I_ALT(dp_m_n.link_n, dp_m2_n2.link_n);
+ PIPE_CONF_CHECK_I_ALT(dp_m_n.tu, dp_m2_n2.tu);
+ }
+
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
+
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
+ PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
+
+ PIPE_CONF_CHECK_I(pixel_multiplier);
+ PIPE_CONF_CHECK_I(has_hdmi_sink);
+ if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
+ IS_VALLEYVIEW(dev))
+ PIPE_CONF_CHECK_I(limited_color_range);
+ PIPE_CONF_CHECK_I(has_infoframe);
+
+ PIPE_CONF_CHECK_I(has_audio);
+
+ PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
+ DRM_MODE_FLAG_INTERLACE);
+
+ if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
+ PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
+ DRM_MODE_FLAG_PHSYNC);
+ PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
+ DRM_MODE_FLAG_NHSYNC);
+ PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
+ DRM_MODE_FLAG_PVSYNC);
+ PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
+ DRM_MODE_FLAG_NVSYNC);
+ }
+
+ PIPE_CONF_CHECK_I(pipe_src_w);
+ PIPE_CONF_CHECK_I(pipe_src_h);
+
+ /*
+ * FIXME: BIOS likes to set up a cloned config with lvds+external
+ * screen. Since we don't yet re-compute the pipe config when moving
+ * just the lvds port away to another pipe the sw tracking won't match.
+ *
+ * Proper atomic modesets with recomputed global state will fix this.
+ * Until then just don't check gmch state for inherited modes.
+ */
+ if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_INHERITED_MODE)) {
+ PIPE_CONF_CHECK_I(gmch_pfit.control);
+ /* pfit ratios are autocomputed by the hw on gen4+ */
+ if (INTEL_INFO(dev)->gen < 4)
+ PIPE_CONF_CHECK_I(gmch_pfit.pgm_ratios);
+ PIPE_CONF_CHECK_I(gmch_pfit.lvds_border_bits);
+ }
+
+ PIPE_CONF_CHECK_I(pch_pfit.enabled);
+ if (current_config->pch_pfit.enabled) {
+ PIPE_CONF_CHECK_I(pch_pfit.pos);
+ PIPE_CONF_CHECK_I(pch_pfit.size);
+ }
+
+ /* BDW+ don't expose a synchronous way to read the state */
+ if (IS_HASWELL(dev))
+ PIPE_CONF_CHECK_I(ips_enabled);
+
+ PIPE_CONF_CHECK_I(double_wide);
+
+ PIPE_CONF_CHECK_X(ddi_pll_sel);
+
+ PIPE_CONF_CHECK_I(shared_dpll);
+ PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
+ PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
+ PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
+ PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
+ PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
+ PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
+ PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
+ PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
+
+ if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
+ PIPE_CONF_CHECK_I(pipe_bpp);
+
+ PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
+ PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
+
+#undef PIPE_CONF_CHECK_X
+#undef PIPE_CONF_CHECK_I
+#undef PIPE_CONF_CHECK_I_ALT
+#undef PIPE_CONF_CHECK_FLAGS
+#undef PIPE_CONF_CHECK_CLOCK_FUZZY
+#undef PIPE_CONF_QUIRK
+
+ return true;
+}
+
+static void check_wm_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct skl_ddb_allocation hw_ddb, *sw_ddb;
+ struct intel_crtc *intel_crtc;
+ int plane;
+
+ if (INTEL_INFO(dev)->gen < 9)
+ return;
+
+ skl_ddb_get_hw_state(dev_priv, &hw_ddb);
+ sw_ddb = &dev_priv->wm.skl_hw.ddb;
+
+ for_each_intel_crtc(dev, intel_crtc) {
+ struct skl_ddb_entry *hw_entry, *sw_entry;
+ const enum pipe pipe = intel_crtc->pipe;
+
+ if (!intel_crtc->active)
+ continue;
+
+ /* planes */
+ for_each_plane(dev_priv, pipe, plane) {
+ hw_entry = &hw_ddb.plane[pipe][plane];
+ sw_entry = &sw_ddb->plane[pipe][plane];
+
+ if (skl_ddb_entry_equal(hw_entry, sw_entry))
+ continue;
+
+ DRM_ERROR("mismatch in DDB state pipe %c plane %d "
+ "(expected (%u,%u), found (%u,%u))\n",
+ pipe_name(pipe), plane + 1,
+ sw_entry->start, sw_entry->end,
+ hw_entry->start, hw_entry->end);
+ }
+
+ /* cursor */
+ hw_entry = &hw_ddb.cursor[pipe];
+ sw_entry = &sw_ddb->cursor[pipe];
+
+ if (skl_ddb_entry_equal(hw_entry, sw_entry))
+ continue;
+
+ DRM_ERROR("mismatch in DDB state pipe %c cursor "
+ "(expected (%u,%u), found (%u,%u))\n",
+ pipe_name(pipe),
+ sw_entry->start, sw_entry->end,
+ hw_entry->start, hw_entry->end);
+ }
+}
+
+static void
+check_connector_state(struct drm_device *dev)
+{
+ struct intel_connector *connector;
+
+ for_each_intel_connector(dev, connector) {
+ /* This also checks the encoder/connector hw state with the
+ * ->get_hw_state callbacks. */
+ intel_connector_check_state(connector);
+
+ I915_STATE_WARN(&connector->new_encoder->base != connector->base.encoder,
+ "connector's staged encoder doesn't match current encoder\n");
+ }
+}
+
+static void
+check_encoder_state(struct drm_device *dev)
+{
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+
+ for_each_intel_encoder(dev, encoder) {
+ bool enabled = false;
+ bool active = false;
+ enum pipe pipe, tracked_pipe;
+
+ DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
+ encoder->base.base.id,
+ encoder->base.name);
+
+ I915_STATE_WARN(&encoder->new_crtc->base != encoder->base.crtc,
+ "encoder's stage crtc doesn't match current crtc\n");
+ I915_STATE_WARN(encoder->connectors_active && !encoder->base.crtc,
+ "encoder's active_connectors set, but no crtc\n");
+
+ for_each_intel_connector(dev, connector) {
+ if (connector->base.encoder != &encoder->base)
+ continue;
+ enabled = true;
+ if (connector->base.dpms != DRM_MODE_DPMS_OFF)
+ active = true;
+ }
+ /*
+ * for MST connectors if we unplug the connector is gone
+ * away but the encoder is still connected to a crtc
+ * until a modeset happens in response to the hotplug.
+ */
+ if (!enabled && encoder->base.encoder_type == DRM_MODE_ENCODER_DPMST)
+ continue;
+
+ I915_STATE_WARN(!!encoder->base.crtc != enabled,
+ "encoder's enabled state mismatch "
+ "(expected %i, found %i)\n",
+ !!encoder->base.crtc, enabled);
+ I915_STATE_WARN(active && !encoder->base.crtc,
+ "active encoder with no crtc\n");
+
+ I915_STATE_WARN(encoder->connectors_active != active,
+ "encoder's computed active state doesn't match tracked active state "
+ "(expected %i, found %i)\n", active, encoder->connectors_active);
+
+ active = encoder->get_hw_state(encoder, &pipe);
+ I915_STATE_WARN(active != encoder->connectors_active,
+ "encoder's hw state doesn't match sw tracking "
+ "(expected %i, found %i)\n",
+ encoder->connectors_active, active);
+
+ if (!encoder->base.crtc)
+ continue;
+
+ tracked_pipe = to_intel_crtc(encoder->base.crtc)->pipe;
+ I915_STATE_WARN(active && pipe != tracked_pipe,
+ "active encoder's pipe doesn't match"
+ "(expected %i, found %i)\n",
+ tracked_pipe, pipe);
+
+ }
+}
+
+static void
+check_crtc_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *crtc;
+ struct intel_encoder *encoder;
+ struct intel_crtc_state pipe_config;
+
+ for_each_intel_crtc(dev, crtc) {
+ bool enabled = false;
+ bool active = false;
+
+ memset(&pipe_config, 0, sizeof(pipe_config));
+
+ DRM_DEBUG_KMS("[CRTC:%d]\n",
+ crtc->base.base.id);
+
+ I915_STATE_WARN(crtc->active && !crtc->base.state->enable,
+ "active crtc, but not enabled in sw tracking\n");
+
+ for_each_intel_encoder(dev, encoder) {
+ if (encoder->base.crtc != &crtc->base)
+ continue;
+ enabled = true;
+ if (encoder->connectors_active)
+ active = true;
+ }
+
+ I915_STATE_WARN(active != crtc->active,
+ "crtc's computed active state doesn't match tracked active state "
+ "(expected %i, found %i)\n", active, crtc->active);
+ I915_STATE_WARN(enabled != crtc->base.state->enable,
+ "crtc's computed enabled state doesn't match tracked enabled state "
+ "(expected %i, found %i)\n", enabled,
+ crtc->base.state->enable);
+
+ active = dev_priv->display.get_pipe_config(crtc,
+ &pipe_config);
+
+ /* hw state is inconsistent with the pipe quirk */
+ if ((crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
+ (crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
+ active = crtc->active;
+
+ for_each_intel_encoder(dev, encoder) {
+ enum pipe pipe;
+ if (encoder->base.crtc != &crtc->base)
+ continue;
+ if (encoder->get_hw_state(encoder, &pipe))
+ encoder->get_config(encoder, &pipe_config);
+ }
+
+ I915_STATE_WARN(crtc->active != active,
+ "crtc active state doesn't match with hw state "
+ "(expected %i, found %i)\n", crtc->active, active);
+
+ if (active &&
+ !intel_pipe_config_compare(dev, crtc->config, &pipe_config)) {
+ I915_STATE_WARN(1, "pipe state doesn't match!\n");
+ intel_dump_pipe_config(crtc, &pipe_config,
+ "[hw state]");
+ intel_dump_pipe_config(crtc, crtc->config,
+ "[sw state]");
+ }
+ }
+}
+
+static void
+check_shared_dpll_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *crtc;
+ struct intel_dpll_hw_state dpll_hw_state;
+ int i;
+
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
+ int enabled_crtcs = 0, active_crtcs = 0;
+ bool active;
+
+ memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
+
+ DRM_DEBUG_KMS("%s\n", pll->name);
+
+ active = pll->get_hw_state(dev_priv, pll, &dpll_hw_state);
+
+ I915_STATE_WARN(pll->active > hweight32(pll->config.crtc_mask),
+ "more active pll users than references: %i vs %i\n",
+ pll->active, hweight32(pll->config.crtc_mask));
+ I915_STATE_WARN(pll->active && !pll->on,
+ "pll in active use but not on in sw tracking\n");
+ I915_STATE_WARN(pll->on && !pll->active,
+ "pll in on but not on in use in sw tracking\n");
+ I915_STATE_WARN(pll->on != active,
+ "pll on state mismatch (expected %i, found %i)\n",
+ pll->on, active);
+
+ for_each_intel_crtc(dev, crtc) {
+ if (crtc->base.state->enable && intel_crtc_to_shared_dpll(crtc) == pll)
+ enabled_crtcs++;
+ if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll)
+ active_crtcs++;
+ }
+ I915_STATE_WARN(pll->active != active_crtcs,
+ "pll active crtcs mismatch (expected %i, found %i)\n",
+ pll->active, active_crtcs);
+ I915_STATE_WARN(hweight32(pll->config.crtc_mask) != enabled_crtcs,
+ "pll enabled crtcs mismatch (expected %i, found %i)\n",
+ hweight32(pll->config.crtc_mask), enabled_crtcs);
+
+ I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state, &dpll_hw_state,
+ sizeof(dpll_hw_state)),
+ "pll hw state mismatch\n");
+ }
+}
+
+void
+intel_modeset_check_state(struct drm_device *dev)
+{
+ check_wm_state(dev);
+ check_connector_state(dev);
+ check_encoder_state(dev);
+ check_crtc_state(dev);
+ check_shared_dpll_state(dev);
+}
+
+void ironlake_check_encoder_dotclock(const struct intel_crtc_state *pipe_config,
+ int dotclock)
+{
+ /*
+ * FDI already provided one idea for the dotclock.
+ * Yell if the encoder disagrees.
+ */
+ WARN(!intel_fuzzy_clock_check(pipe_config->base.adjusted_mode.crtc_clock, dotclock),
+ "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
+ pipe_config->base.adjusted_mode.crtc_clock, dotclock);
+}
+
+static void update_scanline_offset(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+
+ /*
+ * The scanline counter increments at the leading edge of hsync.
+ *
+ * On most platforms it starts counting from vtotal-1 on the
+ * first active line. That means the scanline counter value is
+ * always one less than what we would expect. Ie. just after
+ * start of vblank, which also occurs at start of hsync (on the
+ * last active line), the scanline counter will read vblank_start-1.
+ *
+ * On gen2 the scanline counter starts counting from 1 instead
+ * of vtotal-1, so we have to subtract one (or rather add vtotal-1
+ * to keep the value positive), instead of adding one.
+ *
+ * On HSW+ the behaviour of the scanline counter depends on the output
+ * type. For DP ports it behaves like most other platforms, but on HDMI
+ * there's an extra 1 line difference. So we need to add two instead of
+ * one to the value.
+ */
+ if (IS_GEN2(dev)) {
+ const struct drm_display_mode *mode = &crtc->config->base.adjusted_mode;
+ int vtotal;
+
+ vtotal = mode->crtc_vtotal;
+ if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+ vtotal /= 2;
+
+ crtc->scanline_offset = vtotal - 1;
+ } else if (HAS_DDI(dev) &&
+ intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
+ crtc->scanline_offset = 2;
+ } else
+ crtc->scanline_offset = 1;
+}
+
+static struct intel_crtc_state *
+intel_modeset_compute_config(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ struct drm_framebuffer *fb,
+ struct drm_atomic_state *state,
+ unsigned *modeset_pipes,
+ unsigned *prepare_pipes,
+ unsigned *disable_pipes)
+{
+ struct drm_device *dev = crtc->dev;
+ struct intel_crtc_state *pipe_config = NULL;
+ struct intel_crtc *intel_crtc;
+ int ret = 0;
+
+ ret = drm_atomic_add_affected_connectors(state, crtc);
+ if (ret)
+ return ERR_PTR(ret);
+
+ intel_modeset_affected_pipes(crtc, modeset_pipes,
+ prepare_pipes, disable_pipes);
+
+ for_each_intel_crtc_masked(dev, *disable_pipes, intel_crtc) {
+ pipe_config = intel_atomic_get_crtc_state(state, intel_crtc);
+ if (IS_ERR(pipe_config))
+ return pipe_config;
+
+ pipe_config->base.enable = false;
+ }
+
+ /*
+ * Note this needs changes when we start tracking multiple modes
+ * and crtcs. At that point we'll need to compute the whole config
+ * (i.e. one pipe_config for each crtc) rather than just the one
+ * for this crtc.
+ */
+ for_each_intel_crtc_masked(dev, *modeset_pipes, intel_crtc) {
+ /* FIXME: For now we still expect modeset_pipes has at most
+ * one bit set. */
+ if (WARN_ON(&intel_crtc->base != crtc))
+ continue;
+
+ pipe_config = intel_modeset_pipe_config(crtc, fb, mode, state);
+ if (IS_ERR(pipe_config))
+ return pipe_config;
+
+ intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,
+ "[modeset]");
+ }
+
+ return intel_atomic_get_crtc_state(state, to_intel_crtc(crtc));;
+}
+
+static int __intel_set_mode_setup_plls(struct drm_device *dev,
+ unsigned modeset_pipes,
+ unsigned disable_pipes)
+{
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ unsigned clear_pipes = modeset_pipes | disable_pipes;
+ struct intel_crtc *intel_crtc;
+ int ret = 0;
+
+ if (!dev_priv->display.crtc_compute_clock)
+ return 0;
+
+ ret = intel_shared_dpll_start_config(dev_priv, clear_pipes);
+ if (ret)
+ goto done;
+
+ for_each_intel_crtc_masked(dev, modeset_pipes, intel_crtc) {
+ struct intel_crtc_state *state = intel_crtc->new_config;
+ ret = dev_priv->display.crtc_compute_clock(intel_crtc,
+ state);
+ if (ret) {
+ intel_shared_dpll_abort_config(dev_priv);
+ goto done;
+ }
+ }
+
+done:
+ return ret;
+}
+
+static int __intel_set_mode(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ int x, int y, struct drm_framebuffer *fb,
+ struct intel_crtc_state *pipe_config,
+ unsigned modeset_pipes,
+ unsigned prepare_pipes,
+ unsigned disable_pipes)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_display_mode *saved_mode;
+ struct intel_crtc_state *crtc_state_copy = NULL;
+ struct intel_crtc *intel_crtc;
+ int ret = 0;
+
+ saved_mode = kmalloc(sizeof(*saved_mode), GFP_KERNEL);
+ if (!saved_mode)
+ return -ENOMEM;
+
+ crtc_state_copy = kmalloc(sizeof(*crtc_state_copy), GFP_KERNEL);
+ if (!crtc_state_copy) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ *saved_mode = crtc->mode;
+
+ if (modeset_pipes)
+ to_intel_crtc(crtc)->new_config = pipe_config;
+
+ /*
+ * See if the config requires any additional preparation, e.g.
+ * to adjust global state with pipes off. We need to do this
+ * here so we can get the modeset_pipe updated config for the new
+ * mode set on this crtc. For other crtcs we need to use the
+ * adjusted_mode bits in the crtc directly.
+ */
+ if (IS_VALLEYVIEW(dev)) {
+ valleyview_modeset_global_pipes(dev, &prepare_pipes);
+
+ /* may have added more to prepare_pipes than we should */
+ prepare_pipes &= ~disable_pipes;
+ }
+
+ ret = __intel_set_mode_setup_plls(dev, modeset_pipes, disable_pipes);
+ if (ret)
+ goto done;
+
+ for_each_intel_crtc_masked(dev, disable_pipes, intel_crtc)
+ intel_crtc_disable(&intel_crtc->base);
+
+ for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc) {
+ if (intel_crtc->base.state->enable)
+ dev_priv->display.crtc_disable(&intel_crtc->base);
+ }
+
+ /* crtc->mode is already used by the ->mode_set callbacks, hence we need
+ * to set it here already despite that we pass it down the callchain.
+ *
+ * Note we'll need to fix this up when we start tracking multiple
+ * pipes; here we assume a single modeset_pipe and only track the
+ * single crtc and mode.
+ */
+ if (modeset_pipes) {
+ crtc->mode = *mode;
+ /* mode_set/enable/disable functions rely on a correct pipe
+ * config. */
+ intel_crtc_set_state(to_intel_crtc(crtc), pipe_config);
+
+ /*
+ * Calculate and store various constants which
+ * are later needed by vblank and swap-completion
+ * timestamping. They are derived from true hwmode.
+ */
+ drm_calc_timestamping_constants(crtc,
+ &pipe_config->base.adjusted_mode);
+ }
+
+ /* Only after disabling all output pipelines that will be changed can we
+ * update the the output configuration. */
+ intel_modeset_update_state(dev, prepare_pipes);
+
+ modeset_update_crtc_power_domains(pipe_config->base.state);
+
+ /* Set up the DPLL and any encoders state that needs to adjust or depend
+ * on the DPLL.
+ */
+ for_each_intel_crtc_masked(dev, modeset_pipes, intel_crtc) {
+ struct drm_plane *primary = intel_crtc->base.primary;
+ int vdisplay, hdisplay;
+
+ drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
+ ret = primary->funcs->update_plane(primary, &intel_crtc->base,
+ fb, 0, 0,
+ hdisplay, vdisplay,
+ x << 16, y << 16,
+ hdisplay << 16, vdisplay << 16);
+ }
+
+ /* Now enable the clocks, plane, pipe, and connectors that we set up. */
+ for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc) {
+ update_scanline_offset(intel_crtc);
+
+ dev_priv->display.crtc_enable(&intel_crtc->base);
+ }
+
+ /* FIXME: add subpixel order */
+done:
+ if (ret && crtc->state->enable)
+ crtc->mode = *saved_mode;
+
+ if (ret == 0 && pipe_config) {
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ /* The pipe_config will be freed with the atomic state, so
+ * make a copy. */
+ memcpy(crtc_state_copy, intel_crtc->config,
+ sizeof *crtc_state_copy);
+ intel_crtc->config = crtc_state_copy;
+ intel_crtc->base.state = &crtc_state_copy->base;
+
+ if (modeset_pipes)
+ intel_crtc->new_config = intel_crtc->config;
+ } else {
+ kfree(crtc_state_copy);
+ }
+
+ kfree(saved_mode);
+ return ret;
+}
+
+static int intel_set_mode_pipes(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ int x, int y, struct drm_framebuffer *fb,
+ struct intel_crtc_state *pipe_config,
+ unsigned modeset_pipes,
+ unsigned prepare_pipes,
+ unsigned disable_pipes)
+{
+ int ret;
+
+ ret = __intel_set_mode(crtc, mode, x, y, fb, pipe_config, modeset_pipes,
+ prepare_pipes, disable_pipes);
+
+ if (ret == 0)
+ intel_modeset_check_state(crtc->dev);
+
+ return ret;
+}
+
+static int intel_set_mode(struct drm_crtc *crtc,
+ struct drm_display_mode *mode,
+ int x, int y, struct drm_framebuffer *fb,
+ struct drm_atomic_state *state)
+{
+ struct intel_crtc_state *pipe_config;
+ unsigned modeset_pipes, prepare_pipes, disable_pipes;
+ int ret = 0;
+
+ pipe_config = intel_modeset_compute_config(crtc, mode, fb, state,
+ &modeset_pipes,
+ &prepare_pipes,
+ &disable_pipes);
+
+ if (IS_ERR(pipe_config)) {
+ ret = PTR_ERR(pipe_config);
+ goto out;
+ }
+
+ ret = intel_set_mode_pipes(crtc, mode, x, y, fb, pipe_config,
+ modeset_pipes, prepare_pipes,
+ disable_pipes);
+ if (ret)
+ goto out;
+
+out:
+ return ret;
+}
+
+void intel_crtc_restore_mode(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_atomic_state *state;
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+ struct drm_connector_state *connector_state;
+
+ state = drm_atomic_state_alloc(dev);
+ if (!state) {
+ DRM_DEBUG_KMS("[CRTC:%d] mode restore failed, out of memory",
+ crtc->base.id);
+ return;
+ }
+
+ state->acquire_ctx = dev->mode_config.acquire_ctx;
+
+ /* The force restore path in the HW readout code relies on the staged
+ * config still keeping the user requested config while the actual
+ * state has been overwritten by the configuration read from HW. We
+ * need to copy the staged config to the atomic state, otherwise the
+ * mode set will just reapply the state the HW is already in. */
+ for_each_intel_encoder(dev, encoder) {
+ if (&encoder->new_crtc->base != crtc)
+ continue;
+
+ for_each_intel_connector(dev, connector) {
+ if (connector->new_encoder != encoder)
+ continue;
+
+ connector_state = drm_atomic_get_connector_state(state, &connector->base);
+ if (IS_ERR(connector_state)) {
+ DRM_DEBUG_KMS("Failed to add [CONNECTOR:%d:%s] to state: %ld\n",
+ connector->base.base.id,
+ connector->base.name,
+ PTR_ERR(connector_state));
+ continue;
+ }
+
+ connector_state->crtc = crtc;
+ connector_state->best_encoder = &encoder->base;
+ }
+ }
+
+ intel_set_mode(crtc, &crtc->mode, crtc->x, crtc->y, crtc->primary->fb,
+ state);
+
+ drm_atomic_state_free(state);
+}
+
+#undef for_each_intel_crtc_masked
+
+static void intel_set_config_free(struct intel_set_config *config)
+{
+ if (!config)
+ return;
+
+ kfree(config->save_connector_encoders);
+ kfree(config->save_encoder_crtcs);
+ kfree(config->save_crtc_enabled);
+ kfree(config);
+}
+
+static int intel_set_config_save_state(struct drm_device *dev,
+ struct intel_set_config *config)
+{
+ struct drm_crtc *crtc;
+ struct drm_encoder *encoder;
+ struct drm_connector *connector;
+ int count;
+
+ config->save_crtc_enabled =
+ kcalloc(dev->mode_config.num_crtc,
+ sizeof(bool), GFP_KERNEL);
+ if (!config->save_crtc_enabled)
+ return -ENOMEM;
+
+ config->save_encoder_crtcs =
+ kcalloc(dev->mode_config.num_encoder,
+ sizeof(struct drm_crtc *), GFP_KERNEL);
+ if (!config->save_encoder_crtcs)
+ return -ENOMEM;
+
+ config->save_connector_encoders =
+ kcalloc(dev->mode_config.num_connector,
+ sizeof(struct drm_encoder *), GFP_KERNEL);
+ if (!config->save_connector_encoders)
+ return -ENOMEM;
+
+ /* Copy data. Note that driver private data is not affected.
+ * Should anything bad happen only the expected state is
+ * restored, not the drivers personal bookkeeping.
+ */
+ count = 0;
+ for_each_crtc(dev, crtc) {
+ config->save_crtc_enabled[count++] = crtc->state->enable;
+ }
+
+ count = 0;
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ config->save_encoder_crtcs[count++] = encoder->crtc;
+ }
+
+ count = 0;
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ config->save_connector_encoders[count++] = connector->encoder;
+ }
+
+ return 0;
+}
+
+static void intel_set_config_restore_state(struct drm_device *dev,
+ struct intel_set_config *config)
+{
+ struct intel_crtc *crtc;
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+ int count;
+
+ count = 0;
+ for_each_intel_crtc(dev, crtc) {
+ crtc->new_enabled = config->save_crtc_enabled[count++];
+
+ if (crtc->new_enabled)
+ crtc->new_config = crtc->config;
+ else
+ crtc->new_config = NULL;
+ }
+
+ count = 0;
+ for_each_intel_encoder(dev, encoder) {
+ encoder->new_crtc =
+ to_intel_crtc(config->save_encoder_crtcs[count++]);
+ }
+
+ count = 0;
+ for_each_intel_connector(dev, connector) {
+ connector->new_encoder =
+ to_intel_encoder(config->save_connector_encoders[count++]);
+ }
+}
+
+static bool
+is_crtc_connector_off(struct drm_mode_set *set)
+{
+ int i;
+
+ if (set->num_connectors == 0)
+ return false;
+
+ if (WARN_ON(set->connectors == NULL))
+ return false;
+
+ for (i = 0; i < set->num_connectors; i++)
+ if (set->connectors[i]->encoder &&
+ set->connectors[i]->encoder->crtc == set->crtc &&
+ set->connectors[i]->dpms != DRM_MODE_DPMS_ON)
+ return true;
+
+ return false;
+}
+
+static void
+intel_set_config_compute_mode_changes(struct drm_mode_set *set,
+ struct intel_set_config *config)
+{
+
+ /* We should be able to check here if the fb has the same properties
+ * and then just flip_or_move it */
+ if (is_crtc_connector_off(set)) {
+ config->mode_changed = true;
+ } else if (set->crtc->primary->fb != set->fb) {
+ /*
+ * If we have no fb, we can only flip as long as the crtc is
+ * active, otherwise we need a full mode set. The crtc may
+ * be active if we've only disabled the primary plane, or
+ * in fastboot situations.
+ */
+ if (set->crtc->primary->fb == NULL) {
+ struct intel_crtc *intel_crtc =
+ to_intel_crtc(set->crtc);
+
+ if (intel_crtc->active) {
+ DRM_DEBUG_KMS("crtc has no fb, will flip\n");
+ config->fb_changed = true;
+ } else {
+ DRM_DEBUG_KMS("inactive crtc, full mode set\n");
+ config->mode_changed = true;
+ }
+ } else if (set->fb == NULL) {
+ config->mode_changed = true;
+ } else if (set->fb->pixel_format !=
+ set->crtc->primary->fb->pixel_format) {
+ config->mode_changed = true;
+ } else {
+ config->fb_changed = true;
+ }
+ }
+
+ if (set->fb && (set->x != set->crtc->x || set->y != set->crtc->y))
+ config->fb_changed = true;
+
+ if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
+ DRM_DEBUG_KMS("modes are different, full mode set\n");
+ drm_mode_debug_printmodeline(&set->crtc->mode);
+ drm_mode_debug_printmodeline(set->mode);
+ config->mode_changed = true;
+ }
+
+ DRM_DEBUG_KMS("computed changes for [CRTC:%d], mode_changed=%d, fb_changed=%d\n",
+ set->crtc->base.id, config->mode_changed, config->fb_changed);
+}
+
+static int
+intel_modeset_stage_output_state(struct drm_device *dev,
+ struct drm_mode_set *set,
+ struct intel_set_config *config,
+ struct drm_atomic_state *state)
+{
+ struct intel_connector *connector;
+ struct drm_connector_state *connector_state;
+ struct intel_encoder *encoder;
+ struct intel_crtc *crtc;
+ int ro;
+
+ /* The upper layers ensure that we either disable a crtc or have a list
+ * of connectors. For paranoia, double-check this. */
+ WARN_ON(!set->fb && (set->num_connectors != 0));
+ WARN_ON(set->fb && (set->num_connectors == 0));
+
+ for_each_intel_connector(dev, connector) {
+ /* Otherwise traverse passed in connector list and get encoders
+ * for them. */
+ for (ro = 0; ro < set->num_connectors; ro++) {
+ if (set->connectors[ro] == &connector->base) {
+ connector->new_encoder = intel_find_encoder(connector, to_intel_crtc(set->crtc)->pipe);
+ break;
+ }
+ }
+
+ /* If we disable the crtc, disable all its connectors. Also, if
+ * the connector is on the changing crtc but not on the new
+ * connector list, disable it. */
+ if ((!set->fb || ro == set->num_connectors) &&
+ connector->base.encoder &&
+ connector->base.encoder->crtc == set->crtc) {
+ connector->new_encoder = NULL;
+
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",
+ connector->base.base.id,
+ connector->base.name);
+ }
+
+
+ if (&connector->new_encoder->base != connector->base.encoder) {
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] encoder changed, full mode switch\n",
+ connector->base.base.id,
+ connector->base.name);
+ config->mode_changed = true;
+ }
+ }
+ /* connector->new_encoder is now updated for all connectors. */
+
+ /* Update crtc of enabled connectors. */
+ for_each_intel_connector(dev, connector) {
+ struct drm_crtc *new_crtc;
+
+ if (!connector->new_encoder)
+ continue;
+
+ new_crtc = connector->new_encoder->base.crtc;
+
+ for (ro = 0; ro < set->num_connectors; ro++) {
+ if (set->connectors[ro] == &connector->base)
+ new_crtc = set->crtc;
+ }
+
+ /* Make sure the new CRTC will work with the encoder */
+ if (!drm_encoder_crtc_ok(&connector->new_encoder->base,
+ new_crtc)) {
+ return -EINVAL;
+ }
+ connector->new_encoder->new_crtc = to_intel_crtc(new_crtc);
+
+ connector_state =
+ drm_atomic_get_connector_state(state, &connector->base);
+ if (IS_ERR(connector_state))
+ return PTR_ERR(connector_state);
+
+ connector_state->crtc = new_crtc;
+ connector_state->best_encoder = &connector->new_encoder->base;
+
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n",
+ connector->base.base.id,
+ connector->base.name,
+ new_crtc->base.id);
+ }
+
+ /* Check for any encoders that needs to be disabled. */
+ for_each_intel_encoder(dev, encoder) {
+ int num_connectors = 0;
+ for_each_intel_connector(dev, connector) {
+ if (connector->new_encoder == encoder) {
+ WARN_ON(!connector->new_encoder->new_crtc);
+ num_connectors++;
+ }
+ }
+
+ if (num_connectors == 0)
+ encoder->new_crtc = NULL;
+ else if (num_connectors > 1)
+ return -EINVAL;
+
+ /* Only now check for crtc changes so we don't miss encoders
+ * that will be disabled. */
+ if (&encoder->new_crtc->base != encoder->base.crtc) {
+ DRM_DEBUG_KMS("[ENCODER:%d:%s] crtc changed, full mode switch\n",
+ encoder->base.base.id,
+ encoder->base.name);
+ config->mode_changed = true;
+ }
+ }
+ /* Now we've also updated encoder->new_crtc for all encoders. */
+ for_each_intel_connector(dev, connector) {
+ connector_state =
+ drm_atomic_get_connector_state(state, &connector->base);
+ if (IS_ERR(connector_state))
+ return PTR_ERR(connector_state);
+
+ if (connector->new_encoder) {
+ if (connector->new_encoder != connector->encoder)
+ connector->encoder = connector->new_encoder;
+ } else {
+ connector_state->crtc = NULL;
+ }
+ }
+ for_each_intel_crtc(dev, crtc) {
+ crtc->new_enabled = false;
+
+ for_each_intel_encoder(dev, encoder) {
+ if (encoder->new_crtc == crtc) {
+ crtc->new_enabled = true;
+ break;
+ }
+ }
+
+ if (crtc->new_enabled != crtc->base.state->enable) {
+ DRM_DEBUG_KMS("[CRTC:%d] %sabled, full mode switch\n",
+ crtc->base.base.id,
+ crtc->new_enabled ? "en" : "dis");
+ config->mode_changed = true;
+ }
+
+ if (crtc->new_enabled)
+ crtc->new_config = crtc->config;
+ else
+ crtc->new_config = NULL;
+ }
+
+ return 0;
+}
+
+static void disable_crtc_nofb(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+
+ DRM_DEBUG_KMS("Trying to restore without FB -> disabling pipe %c\n",
+ pipe_name(crtc->pipe));
+
+ for_each_intel_connector(dev, connector) {
+ if (connector->new_encoder &&
+ connector->new_encoder->new_crtc == crtc)
+ connector->new_encoder = NULL;
+ }
+
+ for_each_intel_encoder(dev, encoder) {
+ if (encoder->new_crtc == crtc)
+ encoder->new_crtc = NULL;
+ }
+
+ crtc->new_enabled = false;
+ crtc->new_config = NULL;
+}
+
+static int intel_crtc_set_config(struct drm_mode_set *set)
+{
+ struct drm_device *dev;
+ struct drm_mode_set save_set;
+ struct drm_atomic_state *state = NULL;
+ struct intel_set_config *config;
+ struct intel_crtc_state *pipe_config;
+ unsigned modeset_pipes, prepare_pipes, disable_pipes;
+ int ret;
+
+ BUG_ON(!set);
+ BUG_ON(!set->crtc);
+ BUG_ON(!set->crtc->helper_private);
+
+ /* Enforce sane interface api - has been abused by the fb helper. */
+ BUG_ON(!set->mode && set->fb);
+ BUG_ON(set->fb && set->num_connectors == 0);
+
+ if (set->fb) {
+ DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
+ set->crtc->base.id, set->fb->base.id,
+ (int)set->num_connectors, set->x, set->y);
+ } else {
+ DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
+ }
+
+ dev = set->crtc->dev;
+
+ ret = -ENOMEM;
+ config = kzalloc(sizeof(*config), GFP_KERNEL);
+ if (!config)
+ goto out_config;
+
+ ret = intel_set_config_save_state(dev, config);
+ if (ret)
+ goto out_config;
+
+ save_set.crtc = set->crtc;
+ save_set.mode = &set->crtc->mode;
+ save_set.x = set->crtc->x;
+ save_set.y = set->crtc->y;
+ save_set.fb = set->crtc->primary->fb;
+
+ /* Compute whether we need a full modeset, only an fb base update or no
+ * change at all. In the future we might also check whether only the
+ * mode changed, e.g. for LVDS where we only change the panel fitter in
+ * such cases. */
+ intel_set_config_compute_mode_changes(set, config);
+
+ state = drm_atomic_state_alloc(dev);
+ if (!state) {
+ ret = -ENOMEM;
+ goto out_config;
+ }
+
+ state->acquire_ctx = dev->mode_config.acquire_ctx;
+
+ ret = intel_modeset_stage_output_state(dev, set, config, state);
+ if (ret)
+ goto fail;
+
+ pipe_config = intel_modeset_compute_config(set->crtc, set->mode,
+ set->fb, state,
+ &modeset_pipes,
+ &prepare_pipes,
+ &disable_pipes);
+ if (IS_ERR(pipe_config)) {
+ ret = PTR_ERR(pipe_config);
+ goto fail;
+ } else if (pipe_config) {
+ if (pipe_config->has_audio !=
+ to_intel_crtc(set->crtc)->config->has_audio)
+ config->mode_changed = true;
+
+ /*
+ * Note we have an issue here with infoframes: current code
+ * only updates them on the full mode set path per hw
+ * requirements. So here we should be checking for any
+ * required changes and forcing a mode set.
+ */
+ }
+
+ intel_update_pipe_size(to_intel_crtc(set->crtc));
+
+ if (config->mode_changed) {
+ ret = intel_set_mode_pipes(set->crtc, set->mode,
+ set->x, set->y, set->fb, pipe_config,
+ modeset_pipes, prepare_pipes,
+ disable_pipes);
+ } else if (config->fb_changed) {
+ struct intel_crtc *intel_crtc = to_intel_crtc(set->crtc);
+ struct drm_plane *primary = set->crtc->primary;
+ int vdisplay, hdisplay;
+
+ drm_crtc_get_hv_timing(set->mode, &hdisplay, &vdisplay);
+ ret = primary->funcs->update_plane(primary, set->crtc, set->fb,
+ 0, 0, hdisplay, vdisplay,
+ set->x << 16, set->y << 16,
+ hdisplay << 16, vdisplay << 16);
+
+ /*
+ * We need to make sure the primary plane is re-enabled if it
+ * has previously been turned off.
+ */
+ if (!intel_crtc->primary_enabled && ret == 0) {
+ WARN_ON(!intel_crtc->active);
+ intel_enable_primary_hw_plane(set->crtc->primary, set->crtc);
+ }
+
+ /*
+ * In the fastboot case this may be our only check of the
+ * state after boot. It would be better to only do it on
+ * the first update, but we don't have a nice way of doing that
+ * (and really, set_config isn't used much for high freq page
+ * flipping, so increasing its cost here shouldn't be a big
+ * deal).
+ */
+ if (i915.fastboot && ret == 0)
+ intel_modeset_check_state(set->crtc->dev);
+ }
+
+ if (ret) {
+ DRM_DEBUG_KMS("failed to set mode on [CRTC:%d], err = %d\n",
+ set->crtc->base.id, ret);
+fail:
+ intel_set_config_restore_state(dev, config);
+
+ drm_atomic_state_clear(state);
+
+ /*
+ * HACK: if the pipe was on, but we didn't have a framebuffer,
+ * force the pipe off to avoid oopsing in the modeset code
+ * due to fb==NULL. This should only happen during boot since
+ * we don't yet reconstruct the FB from the hardware state.
+ */
+ if (to_intel_crtc(save_set.crtc)->new_enabled && !save_set.fb)
+ disable_crtc_nofb(to_intel_crtc(save_set.crtc));
+
+ /* Try to restore the config */
+ if (config->mode_changed &&
+ intel_set_mode(save_set.crtc, save_set.mode,
+ save_set.x, save_set.y, save_set.fb,
+ state))
+ DRM_ERROR("failed to restore config after modeset failure\n");
+ }
+
+out_config:
+ if (state)
+ drm_atomic_state_free(state);
+
+ intel_set_config_free(config);
+ return ret;
+}
+
+static const struct drm_crtc_funcs intel_crtc_funcs = {
+ .gamma_set = intel_crtc_gamma_set,
+ .set_config = intel_crtc_set_config,
+ .destroy = intel_crtc_destroy,
+ .page_flip = intel_crtc_page_flip,
+ .atomic_duplicate_state = intel_crtc_duplicate_state,
+ .atomic_destroy_state = intel_crtc_destroy_state,
+};
+
+static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
+ struct intel_shared_dpll *pll,
+ struct intel_dpll_hw_state *hw_state)
+{
+ uint32_t val;
+
+ if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_PLLS))
+ return false;
+
+ val = I915_READ(PCH_DPLL(pll->id));
+ hw_state->dpll = val;
+ hw_state->fp0 = I915_READ(PCH_FP0(pll->id));
+ hw_state->fp1 = I915_READ(PCH_FP1(pll->id));
+
+ return val & DPLL_VCO_ENABLE;
+}
+
+static void ibx_pch_dpll_mode_set(struct drm_i915_private *dev_priv,
+ struct intel_shared_dpll *pll)
+{
+ I915_WRITE(PCH_FP0(pll->id), pll->config.hw_state.fp0);
+ I915_WRITE(PCH_FP1(pll->id), pll->config.hw_state.fp1);
+}
+
+static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
+ struct intel_shared_dpll *pll)
+{
+ /* PCH refclock must be enabled first */
+ ibx_assert_pch_refclk_enabled(dev_priv);
+
+ I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
+
+ /* Wait for the clocks to stabilize. */
+ POSTING_READ(PCH_DPLL(pll->id));
+ udelay(150);
+
+ /* The pixel multiplier can only be updated once the
+ * DPLL is enabled and the clocks are stable.
+ *
+ * So write it again.
+ */
+ I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
+ POSTING_READ(PCH_DPLL(pll->id));
+ udelay(200);
+}
+
+static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
+ struct intel_shared_dpll *pll)
+{
+ struct drm_device *dev = dev_priv->dev;
+ struct intel_crtc *crtc;
+
+ /* Make sure no transcoder isn't still depending on us. */
+ for_each_intel_crtc(dev, crtc) {
+ if (intel_crtc_to_shared_dpll(crtc) == pll)
+ assert_pch_transcoder_disabled(dev_priv, crtc->pipe);
+ }
+
+ I915_WRITE(PCH_DPLL(pll->id), 0);
+ POSTING_READ(PCH_DPLL(pll->id));
+ udelay(200);
+}
+
+static char *ibx_pch_dpll_names[] = {
+ "PCH DPLL A",
+ "PCH DPLL B",
+};
+
+static void ibx_pch_dpll_init(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int i;
+
+ dev_priv->num_shared_dpll = 2;
+
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ dev_priv->shared_dplls[i].id = i;
+ dev_priv->shared_dplls[i].name = ibx_pch_dpll_names[i];
+ dev_priv->shared_dplls[i].mode_set = ibx_pch_dpll_mode_set;
+ dev_priv->shared_dplls[i].enable = ibx_pch_dpll_enable;
+ dev_priv->shared_dplls[i].disable = ibx_pch_dpll_disable;
+ dev_priv->shared_dplls[i].get_hw_state =
+ ibx_pch_dpll_get_hw_state;
+ }
+}
+
+static void intel_shared_dpll_init(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (HAS_DDI(dev))
+ intel_ddi_pll_init(dev);
+ else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+ ibx_pch_dpll_init(dev);
+ else
+ dev_priv->num_shared_dpll = 0;
+
+ BUG_ON(dev_priv->num_shared_dpll > I915_NUM_PLLS);
+}
+
+/**
+ * intel_wm_need_update - Check whether watermarks need updating
+ * @plane: drm plane
+ * @state: new plane state
+ *
+ * Check current plane state versus the new one to determine whether
+ * watermarks need to be recalculated.
+ *
+ * Returns true or false.
+ */
+bool intel_wm_need_update(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ /* Update watermarks on tiling changes. */
+ if (!plane->state->fb || !state->fb ||
+ plane->state->fb->modifier[0] != state->fb->modifier[0] ||
+ plane->state->rotation != state->rotation)
+ return true;
+
+ return false;
+}
+
+/**
+ * intel_prepare_plane_fb - Prepare fb for usage on plane
+ * @plane: drm plane to prepare for
+ * @fb: framebuffer to prepare for presentation
+ *
+ * Prepares a framebuffer for usage on a display plane. Generally this
+ * involves pinning the underlying object and updating the frontbuffer tracking
+ * bits. Some older platforms need special physical address handling for
+ * cursor planes.
+ *
+ * Returns 0 on success, negative error code on failure.
+ */
+int
+intel_prepare_plane_fb(struct drm_plane *plane,
+ struct drm_framebuffer *fb,
+ const struct drm_plane_state *new_state)
+{
+ struct drm_device *dev = plane->dev;
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+ enum pipe pipe = intel_plane->pipe;
+ struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+ struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
+ unsigned frontbuffer_bits = 0;
+ int ret = 0;
+
+ if (!obj)
+ return 0;
+
+ switch (plane->type) {
+ case DRM_PLANE_TYPE_PRIMARY:
+ frontbuffer_bits = INTEL_FRONTBUFFER_PRIMARY(pipe);
+ break;
+ case DRM_PLANE_TYPE_CURSOR:
+ frontbuffer_bits = INTEL_FRONTBUFFER_CURSOR(pipe);
+ break;
+ case DRM_PLANE_TYPE_OVERLAY:
+ frontbuffer_bits = INTEL_FRONTBUFFER_SPRITE(pipe);
+ break;
+ }
+
+ mutex_lock(&dev->struct_mutex);
+
+ if (plane->type == DRM_PLANE_TYPE_CURSOR &&
+ INTEL_INFO(dev)->cursor_needs_physical) {
+ int align = IS_I830(dev) ? 16 * 1024 : 256;
+ ret = i915_gem_object_attach_phys(obj, align);
+ if (ret)
+ DRM_DEBUG_KMS("failed to attach phys object\n");
+ } else {
+ ret = intel_pin_and_fence_fb_obj(plane, fb, new_state, NULL);
+ }
+
+ if (ret == 0)
+ i915_gem_track_fb(old_obj, obj, frontbuffer_bits);
+
+ mutex_unlock(&dev->struct_mutex);
+
+ return ret;
+}
+
+/**
+ * intel_cleanup_plane_fb - Cleans up an fb after plane use
+ * @plane: drm plane to clean up for
+ * @fb: old framebuffer that was on plane
+ *
+ * Cleans up a framebuffer that has just been removed from a plane.
+ */
+void
+intel_cleanup_plane_fb(struct drm_plane *plane,
+ struct drm_framebuffer *fb,
+ const struct drm_plane_state *old_state)
+{
+ struct drm_device *dev = plane->dev;
+ struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+
+ if (WARN_ON(!obj))
+ return;
+
+ if (plane->type != DRM_PLANE_TYPE_CURSOR ||
+ !INTEL_INFO(dev)->cursor_needs_physical) {
+ mutex_lock(&dev->struct_mutex);
+ intel_unpin_fb_obj(fb, old_state);
+ mutex_unlock(&dev->struct_mutex);
+ }
+}
+
+static int
+intel_check_primary_plane(struct drm_plane *plane,
+ struct intel_plane_state *state)
+{
+ struct drm_device *dev = plane->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = state->base.crtc;
+ struct intel_crtc *intel_crtc;
+ struct drm_framebuffer *fb = state->base.fb;
+ struct drm_rect *dest = &state->dst;
+ struct drm_rect *src = &state->src;
+ const struct drm_rect *clip = &state->clip;
+ int ret;
+
+ crtc = crtc ? crtc : plane->crtc;
+ intel_crtc = to_intel_crtc(crtc);
+
+ ret = drm_plane_helper_check_update(plane, crtc, fb,
+ src, dest, clip,
+ DRM_PLANE_HELPER_NO_SCALING,
+ DRM_PLANE_HELPER_NO_SCALING,
+ false, true, &state->visible);
+ if (ret)
+ return ret;
+
+ if (intel_crtc->active) {
+ intel_crtc->atomic.wait_for_flips = true;
+
+ /*
+ * FBC does not work on some platforms for rotated
+ * planes, so disable it when rotation is not 0 and
+ * update it when rotation is set back to 0.
+ *
+ * FIXME: This is redundant with the fbc update done in
+ * the primary plane enable function except that that
+ * one is done too late. We eventually need to unify
+ * this.
+ */
+ if (intel_crtc->primary_enabled &&
+ INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev) &&
+ dev_priv->fbc.crtc == intel_crtc &&
+ state->base.rotation != BIT(DRM_ROTATE_0)) {
+ intel_crtc->atomic.disable_fbc = true;
+ }
+
+ if (state->visible) {
+ /*
+ * BDW signals flip done immediately if the plane
+ * is disabled, even if the plane enable is already
+ * armed to occur at the next vblank :(
+ */
+ if (IS_BROADWELL(dev) && !intel_crtc->primary_enabled)
+ intel_crtc->atomic.wait_vblank = true;
+ }
+
+ intel_crtc->atomic.fb_bits |=
+ INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
+
+ intel_crtc->atomic.update_fbc = true;
+
+ if (intel_wm_need_update(plane, &state->base))
+ intel_crtc->atomic.update_wm = true;
+ }
+
+ return 0;
+}
+
+static void
+intel_commit_primary_plane(struct drm_plane *plane,
+ struct intel_plane_state *state)
+{
+ struct drm_crtc *crtc = state->base.crtc;
+ struct drm_framebuffer *fb = state->base.fb;
+ struct drm_device *dev = plane->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc;
+ struct drm_rect *src = &state->src;
+
+ crtc = crtc ? crtc : plane->crtc;
+ intel_crtc = to_intel_crtc(crtc);
+
+ plane->fb = fb;
+ crtc->x = src->x1 >> 16;
+ crtc->y = src->y1 >> 16;
+
+ if (intel_crtc->active) {
+ if (state->visible) {
+ /* FIXME: kill this fastboot hack */
+ intel_update_pipe_size(intel_crtc);
+
+ intel_crtc->primary_enabled = true;
+
+ dev_priv->display.update_primary_plane(crtc, plane->fb,
+ crtc->x, crtc->y);
+ } else {
+ /*
+ * If clipping results in a non-visible primary plane,
+ * we'll disable the primary plane. Note that this is
+ * a bit different than what happens if userspace
+ * explicitly disables the plane by passing fb=0
+ * because plane->fb still gets set and pinned.
+ */
+ intel_disable_primary_hw_plane(plane, crtc);
+ }
+ }
+}
+
+static void intel_begin_crtc_commit(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_plane *intel_plane;
+ struct drm_plane *p;
+ unsigned fb_bits = 0;
+
+ /* Track fb's for any planes being disabled */
+ list_for_each_entry(p, &dev->mode_config.plane_list, head) {
+ intel_plane = to_intel_plane(p);
+
+ if (intel_crtc->atomic.disabled_planes &
+ (1 << drm_plane_index(p))) {
+ switch (p->type) {
+ case DRM_PLANE_TYPE_PRIMARY:
+ fb_bits = INTEL_FRONTBUFFER_PRIMARY(intel_plane->pipe);
+ break;
+ case DRM_PLANE_TYPE_CURSOR:
+ fb_bits = INTEL_FRONTBUFFER_CURSOR(intel_plane->pipe);
+ break;
+ case DRM_PLANE_TYPE_OVERLAY:
+ fb_bits = INTEL_FRONTBUFFER_SPRITE(intel_plane->pipe);
+ break;
+ }
+
+ mutex_lock(&dev->struct_mutex);
+ i915_gem_track_fb(intel_fb_obj(p->fb), NULL, fb_bits);
+ mutex_unlock(&dev->struct_mutex);
+ }
+ }
+
+ if (intel_crtc->atomic.wait_for_flips)
+ intel_crtc_wait_for_pending_flips(crtc);
+
+ if (intel_crtc->atomic.disable_fbc)
+ intel_fbc_disable(dev);
+
+ if (intel_crtc->atomic.pre_disable_primary)
+ intel_pre_disable_primary(crtc);
+
+ if (intel_crtc->atomic.update_wm)
+ intel_update_watermarks(crtc);
+
+ intel_runtime_pm_get(dev_priv);
+
+ /* Perform vblank evasion around commit operation */
+ if (intel_crtc->active)
+ intel_crtc->atomic.evade =
+ intel_pipe_update_start(intel_crtc,
+ &intel_crtc->atomic.start_vbl_count);
+}
+
+static void intel_finish_crtc_commit(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct drm_plane *p;
+
+ if (intel_crtc->atomic.evade)
+ intel_pipe_update_end(intel_crtc,
+ intel_crtc->atomic.start_vbl_count);
+
+ intel_runtime_pm_put(dev_priv);
+
+ if (intel_crtc->atomic.wait_vblank)
+ intel_wait_for_vblank(dev, intel_crtc->pipe);
+
+ intel_frontbuffer_flip(dev, intel_crtc->atomic.fb_bits);
+
+ if (intel_crtc->atomic.update_fbc) {
+ mutex_lock(&dev->struct_mutex);
+ intel_fbc_update(dev);
+ mutex_unlock(&dev->struct_mutex);
+ }
+
+ if (intel_crtc->atomic.post_enable_primary)
+ intel_post_enable_primary(crtc);
+
+ drm_for_each_legacy_plane(p, &dev->mode_config.plane_list)
+ if (intel_crtc->atomic.update_sprite_watermarks & drm_plane_index(p))
+ intel_update_sprite_watermarks(p, crtc, 0, 0, 0,
+ false, false);
+
+ memset(&intel_crtc->atomic, 0, sizeof(intel_crtc->atomic));
+}
+
+/**
+ * intel_plane_destroy - destroy a plane
+ * @plane: plane to destroy
+ *
+ * Common destruction function for all types of planes (primary, cursor,
+ * sprite).
+ */
+void intel_plane_destroy(struct drm_plane *plane)
+{
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+ drm_plane_cleanup(plane);
+ kfree(intel_plane);
+}
+
+const struct drm_plane_funcs intel_plane_funcs = {
+ .update_plane = drm_plane_helper_update,
+ .disable_plane = drm_plane_helper_disable,
+ .destroy = intel_plane_destroy,
+ .set_property = drm_atomic_helper_plane_set_property,
+ .atomic_get_property = intel_plane_atomic_get_property,
+ .atomic_set_property = intel_plane_atomic_set_property,
+ .atomic_duplicate_state = intel_plane_duplicate_state,
+ .atomic_destroy_state = intel_plane_destroy_state,
+
+};
+
+static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
+ int pipe)
+{
+ struct intel_plane *primary;
+ struct intel_plane_state *state;
+ const uint32_t *intel_primary_formats;
+ int num_formats;
+
+ primary = kzalloc(sizeof(*primary), GFP_KERNEL);
+ if (primary == NULL)
+ return NULL;
+
+ state = intel_create_plane_state(&primary->base);
+ if (!state) {
+ kfree(primary);
+ return NULL;
+ }
+ primary->base.state = &state->base;
+
+ primary->can_scale = false;
+ primary->max_downscale = 1;
+ primary->pipe = pipe;
+ primary->plane = pipe;
+ primary->check_plane = intel_check_primary_plane;
+ primary->commit_plane = intel_commit_primary_plane;
+ if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
+ primary->plane = !pipe;
+
+ if (INTEL_INFO(dev)->gen <= 3) {
+ intel_primary_formats = intel_primary_formats_gen2;
+ num_formats = ARRAY_SIZE(intel_primary_formats_gen2);
+ } else {
+ intel_primary_formats = intel_primary_formats_gen4;
+ num_formats = ARRAY_SIZE(intel_primary_formats_gen4);
+ }
+
+ drm_universal_plane_init(dev, &primary->base, 0,
+ &intel_plane_funcs,
+ intel_primary_formats, num_formats,
+ DRM_PLANE_TYPE_PRIMARY);
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ if (!dev->mode_config.rotation_property)
+ dev->mode_config.rotation_property =
+ drm_mode_create_rotation_property(dev,
+ BIT(DRM_ROTATE_0) |
+ BIT(DRM_ROTATE_180));
+ if (dev->mode_config.rotation_property)
+ drm_object_attach_property(&primary->base.base,
+ dev->mode_config.rotation_property,
+ state->base.rotation);
+ }
+
+ drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
+
+ return &primary->base;
+}
+
+static int
+intel_check_cursor_plane(struct drm_plane *plane,
+ struct intel_plane_state *state)
+{
+ struct drm_crtc *crtc = state->base.crtc;
+ struct drm_device *dev = plane->dev;
+ struct drm_framebuffer *fb = state->base.fb;
+ struct drm_rect *dest = &state->dst;
+ struct drm_rect *src = &state->src;
+ const struct drm_rect *clip = &state->clip;
+ struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+ struct intel_crtc *intel_crtc;
+ unsigned stride;
+ int ret;
+
+ crtc = crtc ? crtc : plane->crtc;
+ intel_crtc = to_intel_crtc(crtc);
+
+ ret = drm_plane_helper_check_update(plane, crtc, fb,
+ src, dest, clip,
+ DRM_PLANE_HELPER_NO_SCALING,
+ DRM_PLANE_HELPER_NO_SCALING,
+ true, true, &state->visible);
+ if (ret)
+ return ret;
+
+
+ /* if we want to turn off the cursor ignore width and height */
+ if (!obj)
+ goto finish;
+
+ /* Check for which cursor types we support */
+ if (!cursor_size_ok(dev, state->base.crtc_w, state->base.crtc_h)) {
+ DRM_DEBUG("Cursor dimension %dx%d not supported\n",
+ state->base.crtc_w, state->base.crtc_h);
+ return -EINVAL;
+ }
+
+ stride = roundup_pow_of_two(state->base.crtc_w) * 4;
+ if (obj->base.size < stride * state->base.crtc_h) {
+ DRM_DEBUG_KMS("buffer is too small\n");
+ return -ENOMEM;
+ }
+
+ if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
+ DRM_DEBUG_KMS("cursor cannot be tiled\n");
+ ret = -EINVAL;
+ }
+
+finish:
+ if (intel_crtc->active) {
+ if (plane->state->crtc_w != state->base.crtc_w)
+ intel_crtc->atomic.update_wm = true;
+
+ intel_crtc->atomic.fb_bits |=
+ INTEL_FRONTBUFFER_CURSOR(intel_crtc->pipe);
+ }
+
+ return ret;
+}
+
+static void
+intel_commit_cursor_plane(struct drm_plane *plane,
+ struct intel_plane_state *state)
+{
+ struct drm_crtc *crtc = state->base.crtc;
+ struct drm_device *dev = plane->dev;
+ struct intel_crtc *intel_crtc;
+ struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
+ uint32_t addr;
+
+ crtc = crtc ? crtc : plane->crtc;
+ intel_crtc = to_intel_crtc(crtc);
+
+ plane->fb = state->base.fb;
+ crtc->cursor_x = state->base.crtc_x;
+ crtc->cursor_y = state->base.crtc_y;
+
+ if (intel_crtc->cursor_bo == obj)
+ goto update;
+
+ if (!obj)
+ addr = 0;
+ else if (!INTEL_INFO(dev)->cursor_needs_physical)
+ addr = i915_gem_obj_ggtt_offset(obj);
+ else
+ addr = obj->phys_handle->busaddr;
+
+ intel_crtc->cursor_addr = addr;
+ intel_crtc->cursor_bo = obj;
+update:
+
+ if (intel_crtc->active)
+ intel_crtc_update_cursor(crtc, state->visible);
+}
+
+static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
+ int pipe)
+{
+ struct intel_plane *cursor;
+ struct intel_plane_state *state;
+
+ cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
+ if (cursor == NULL)
+ return NULL;
+
+ state = intel_create_plane_state(&cursor->base);
+ if (!state) {
+ kfree(cursor);
+ return NULL;
+ }
+ cursor->base.state = &state->base;
+
+ cursor->can_scale = false;
+ cursor->max_downscale = 1;
+ cursor->pipe = pipe;
+ cursor->plane = pipe;
+ cursor->check_plane = intel_check_cursor_plane;
+ cursor->commit_plane = intel_commit_cursor_plane;
+
+ drm_universal_plane_init(dev, &cursor->base, 0,
+ &intel_plane_funcs,
+ intel_cursor_formats,
+ ARRAY_SIZE(intel_cursor_formats),
+ DRM_PLANE_TYPE_CURSOR);
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ if (!dev->mode_config.rotation_property)
+ dev->mode_config.rotation_property =
+ drm_mode_create_rotation_property(dev,
+ BIT(DRM_ROTATE_0) |
+ BIT(DRM_ROTATE_180));
+ if (dev->mode_config.rotation_property)
+ drm_object_attach_property(&cursor->base.base,
+ dev->mode_config.rotation_property,
+ state->base.rotation);
+ }
+
+ drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
+
+ return &cursor->base;
+}
+
+static void intel_crtc_init(struct drm_device *dev, int pipe)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc;
+ struct intel_crtc_state *crtc_state = NULL;
+ struct drm_plane *primary = NULL;
+ struct drm_plane *cursor = NULL;
+ int i, ret;
+
+ intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
+ if (intel_crtc == NULL)
+ return;
+
+ crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
+ if (!crtc_state)
+ goto fail;
+ intel_crtc_set_state(intel_crtc, crtc_state);
+ crtc_state->base.crtc = &intel_crtc->base;
+
+ primary = intel_primary_plane_create(dev, pipe);
+ if (!primary)
+ goto fail;
+
+ cursor = intel_cursor_plane_create(dev, pipe);
+ if (!cursor)
+ goto fail;
+
+ ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary,
+ cursor, &intel_crtc_funcs);
+ if (ret)
+ goto fail;
+
+ drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
+ for (i = 0; i < 256; i++) {
+ intel_crtc->lut_r[i] = i;
+ intel_crtc->lut_g[i] = i;
+ intel_crtc->lut_b[i] = i;
+ }
+
+ /*
+ * On gen2/3 only plane A can do fbc, but the panel fitter and lvds port
+ * is hooked to pipe B. Hence we want plane A feeding pipe B.
+ */
+ intel_crtc->pipe = pipe;
+ intel_crtc->plane = pipe;
+ if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) {
+ DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
+ intel_crtc->plane = !pipe;
+ }
+
+ intel_crtc->cursor_base = ~0;
+ intel_crtc->cursor_cntl = ~0;
+ intel_crtc->cursor_size = ~0;
+
+ BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
+ dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
+ dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
+ dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
+
+ INIT_WORK(&intel_crtc->mmio_flip.work, intel_mmio_flip_work_func);
+
+ drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
+
+ WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
+ return;
+
+fail:
+ if (primary)
+ drm_plane_cleanup(primary);
+ if (cursor)
+ drm_plane_cleanup(cursor);
+ kfree(crtc_state);
+ kfree(intel_crtc);
+}
+
+enum pipe intel_get_pipe_from_connector(struct intel_connector *connector)
+{
+ struct drm_encoder *encoder = connector->base.encoder;
+ struct drm_device *dev = connector->base.dev;
+
+ WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
+
+ if (!encoder || WARN_ON(!encoder->crtc))
+ return INVALID_PIPE;
+
+ return to_intel_crtc(encoder->crtc)->pipe;
+}
+
+int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
+ struct drm_crtc *drmmode_crtc;
+ struct intel_crtc *crtc;
+
+ drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
+
+ if (!drmmode_crtc) {
+ DRM_ERROR("no such CRTC id\n");
+ return -ENOENT;
+ }
+
+ crtc = to_intel_crtc(drmmode_crtc);
+ pipe_from_crtc_id->pipe = crtc->pipe;
+
+ return 0;
+}
+
+static int intel_encoder_clones(struct intel_encoder *encoder)
+{
+ struct drm_device *dev = encoder->base.dev;
+ struct intel_encoder *source_encoder;
+ int index_mask = 0;
+ int entry = 0;
+
+ for_each_intel_encoder(dev, source_encoder) {
+ if (encoders_cloneable(encoder, source_encoder))
+ index_mask |= (1 << entry);
+
+ entry++;
+ }
+
+ return index_mask;
+}
+
+static bool has_edp_a(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!IS_MOBILE(dev))
+ return false;
+
+ if ((I915_READ(DP_A) & DP_DETECTED) == 0)
+ return false;
+
+ if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
+ return false;
+
+ return true;
+}
+
+static bool intel_crt_present(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (INTEL_INFO(dev)->gen >= 9)
+ return false;
+
+ if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
+ return false;
+
+ if (IS_CHERRYVIEW(dev))
+ return false;
+
+ if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support)
+ return false;
+
+ return true;
+}
+
+static void intel_setup_outputs(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_encoder *encoder;
+ bool dpd_is_edp = false;
+
+ intel_lvds_init(dev);
+
+ if (intel_crt_present(dev))
+ intel_crt_init(dev);
+
+ if (HAS_DDI(dev)) {
+ int found;
+
+ /*
+ * Haswell uses DDI functions to detect digital outputs.
+ * On SKL pre-D0 the strap isn't connected, so we assume
+ * it's there.
+ */
+ found = I915_READ(DDI_BUF_CTL_A) & DDI_INIT_DISPLAY_DETECTED;
+ /* WaIgnoreDDIAStrap: skl */
+ if (found ||
+ (IS_SKYLAKE(dev) && INTEL_REVID(dev) < SKL_REVID_D0))
+ intel_ddi_init(dev, PORT_A);
+
+ /* DDI B, C and D detection is indicated by the SFUSE_STRAP
+ * register */
+ found = I915_READ(SFUSE_STRAP);
+
+ if (found & SFUSE_STRAP_DDIB_DETECTED)
+ intel_ddi_init(dev, PORT_B);
+ if (found & SFUSE_STRAP_DDIC_DETECTED)
+ intel_ddi_init(dev, PORT_C);
+ if (found & SFUSE_STRAP_DDID_DETECTED)
+ intel_ddi_init(dev, PORT_D);
+ } else if (HAS_PCH_SPLIT(dev)) {
+ int found;
+ dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
+
+ if (has_edp_a(dev))
+ intel_dp_init(dev, DP_A, PORT_A);
+
+ if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
+ /* PCH SDVOB multiplex with HDMIB */
+ found = intel_sdvo_init(dev, PCH_SDVOB, true);
+ if (!found)
+ intel_hdmi_init(dev, PCH_HDMIB, PORT_B);
+ if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
+ intel_dp_init(dev, PCH_DP_B, PORT_B);
+ }
+
+ if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
+ intel_hdmi_init(dev, PCH_HDMIC, PORT_C);
+
+ if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
+ intel_hdmi_init(dev, PCH_HDMID, PORT_D);
+
+ if (I915_READ(PCH_DP_C) & DP_DETECTED)
+ intel_dp_init(dev, PCH_DP_C, PORT_C);
+
+ if (I915_READ(PCH_DP_D) & DP_DETECTED)
+ intel_dp_init(dev, PCH_DP_D, PORT_D);
+ } else if (IS_VALLEYVIEW(dev)) {
+ /*
+ * The DP_DETECTED bit is the latched state of the DDC
+ * SDA pin at boot. However since eDP doesn't require DDC
+ * (no way to plug in a DP->HDMI dongle) the DDC pins for
+ * eDP ports may have been muxed to an alternate function.
+ * Thus we can't rely on the DP_DETECTED bit alone to detect
+ * eDP ports. Consult the VBT as well as DP_DETECTED to
+ * detect eDP ports.
+ */
+ if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIB) & SDVO_DETECTED &&
+ !intel_dp_is_edp(dev, PORT_B))
+ intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIB,
+ PORT_B);
+ if (I915_READ(VLV_DISPLAY_BASE + DP_B) & DP_DETECTED ||
+ intel_dp_is_edp(dev, PORT_B))
+ intel_dp_init(dev, VLV_DISPLAY_BASE + DP_B, PORT_B);
+
+ if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED &&
+ !intel_dp_is_edp(dev, PORT_C))
+ intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIC,
+ PORT_C);
+ if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED ||
+ intel_dp_is_edp(dev, PORT_C))
+ intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C, PORT_C);
+
+ if (IS_CHERRYVIEW(dev)) {
+ if (I915_READ(VLV_DISPLAY_BASE + CHV_HDMID) & SDVO_DETECTED)
+ intel_hdmi_init(dev, VLV_DISPLAY_BASE + CHV_HDMID,
+ PORT_D);
+ /* eDP not supported on port D, so don't check VBT */
+ if (I915_READ(VLV_DISPLAY_BASE + DP_D) & DP_DETECTED)
+ intel_dp_init(dev, VLV_DISPLAY_BASE + DP_D, PORT_D);
+ }
+
+ intel_dsi_init(dev);
+ } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
+ bool found = false;
+
+ if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
+ DRM_DEBUG_KMS("probing SDVOB\n");
+ found = intel_sdvo_init(dev, GEN3_SDVOB, true);
+ if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
+ DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
+ intel_hdmi_init(dev, GEN4_HDMIB, PORT_B);
+ }
+
+ if (!found && SUPPORTS_INTEGRATED_DP(dev))
+ intel_dp_init(dev, DP_B, PORT_B);
+ }
+
+ /* Before G4X SDVOC doesn't have its own detect register */
+
+ if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
+ DRM_DEBUG_KMS("probing SDVOC\n");
+ found = intel_sdvo_init(dev, GEN3_SDVOC, false);
+ }
+
+ if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
+
+ if (SUPPORTS_INTEGRATED_HDMI(dev)) {
+ DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
+ intel_hdmi_init(dev, GEN4_HDMIC, PORT_C);
+ }
+ if (SUPPORTS_INTEGRATED_DP(dev))
+ intel_dp_init(dev, DP_C, PORT_C);
+ }
+
+ if (SUPPORTS_INTEGRATED_DP(dev) &&
+ (I915_READ(DP_D) & DP_DETECTED))
+ intel_dp_init(dev, DP_D, PORT_D);
+ } else if (IS_GEN2(dev))
+ intel_dvo_init(dev);
+
+ if (SUPPORTS_TV(dev))
+ intel_tv_init(dev);
+
+ intel_psr_init(dev);
+
+ for_each_intel_encoder(dev, encoder) {
+ encoder->base.possible_crtcs = encoder->crtc_mask;
+ encoder->base.possible_clones =
+ intel_encoder_clones(encoder);
+ }
+
+ intel_init_pch_refclk(dev);
+
+ drm_helper_move_panel_connectors_to_head(dev);
+}
+
+static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
+{
+ struct drm_device *dev = fb->dev;
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+
+ drm_framebuffer_cleanup(fb);
+ mutex_lock(&dev->struct_mutex);
+ WARN_ON(!intel_fb->obj->framebuffer_references--);
+ drm_gem_object_unreference(&intel_fb->obj->base);
+ mutex_unlock(&dev->struct_mutex);
+ kfree(intel_fb);
+}
+
+static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ struct drm_file *file,
+ unsigned int *handle)
+{
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ struct drm_i915_gem_object *obj = intel_fb->obj;
+
+ return drm_gem_handle_create(file, &obj->base, handle);
+}
+
+static const struct drm_framebuffer_funcs intel_fb_funcs = {
+ .destroy = intel_user_framebuffer_destroy,
+ .create_handle = intel_user_framebuffer_create_handle,
+};
+
+static
+u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
+ uint32_t pixel_format)
+{
+ u32 gen = INTEL_INFO(dev)->gen;
+
+ if (gen >= 9) {
+ /* "The stride in bytes must not exceed the of the size of 8K
+ * pixels and 32K bytes."
+ */
+ return min(8192*drm_format_plane_cpp(pixel_format, 0), 32768);
+ } else if (gen >= 5 && !IS_VALLEYVIEW(dev)) {
+ return 32*1024;
+ } else if (gen >= 4) {
+ if (fb_modifier == I915_FORMAT_MOD_X_TILED)
+ return 16*1024;
+ else
+ return 32*1024;
+ } else if (gen >= 3) {
+ if (fb_modifier == I915_FORMAT_MOD_X_TILED)
+ return 8*1024;
+ else
+ return 16*1024;
+ } else {
+ /* XXX DSPC is limited to 4k tiled */
+ return 8*1024;
+ }
+}
+
+static int intel_framebuffer_init(struct drm_device *dev,
+ struct intel_framebuffer *intel_fb,
+ struct drm_mode_fb_cmd2 *mode_cmd,
+ struct drm_i915_gem_object *obj)
+{
+ unsigned int aligned_height;
+ int ret;
+ u32 pitch_limit, stride_alignment;
+
+ WARN_ON(!mutex_is_locked(&dev->struct_mutex));
+
+ if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
+ /* Enforce that fb modifier and tiling mode match, but only for
+ * X-tiled. This is needed for FBC. */
+ if (!!(obj->tiling_mode == I915_TILING_X) !=
+ !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) {
+ DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
+ return -EINVAL;
+ }
+ } else {
+ if (obj->tiling_mode == I915_TILING_X)
+ mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
+ else if (obj->tiling_mode == I915_TILING_Y) {
+ DRM_DEBUG("No Y tiling for legacy addfb\n");
+ return -EINVAL;
+ }
+ }
+
+ /* Passed in modifier sanity checking. */
+ switch (mode_cmd->modifier[0]) {
+ case I915_FORMAT_MOD_Y_TILED:
+ case I915_FORMAT_MOD_Yf_TILED:
+ if (INTEL_INFO(dev)->gen < 9) {
+ DRM_DEBUG("Unsupported tiling 0x%llx!\n",
+ mode_cmd->modifier[0]);
+ return -EINVAL;
+ }
+ case DRM_FORMAT_MOD_NONE:
+ case I915_FORMAT_MOD_X_TILED:
+ break;
+ default:
+ DRM_DEBUG("Unsupported fb modifier 0x%llx!\n",
+ mode_cmd->modifier[0]);
+ return -EINVAL;
+ }
+
+ stride_alignment = intel_fb_stride_alignment(dev, mode_cmd->modifier[0],
+ mode_cmd->pixel_format);
+ if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
+ DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
+ mode_cmd->pitches[0], stride_alignment);
+ return -EINVAL;
+ }
+
+ pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
+ mode_cmd->pixel_format);
+ if (mode_cmd->pitches[0] > pitch_limit) {
+ DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
+ mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
+ "tiled" : "linear",
+ mode_cmd->pitches[0], pitch_limit);
+ return -EINVAL;
+ }
+
+ if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED &&
+ mode_cmd->pitches[0] != obj->stride) {
+ DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n",
+ mode_cmd->pitches[0], obj->stride);
+ return -EINVAL;
+ }
+
+ /* Reject formats not supported by any plane early. */
+ switch (mode_cmd->pixel_format) {
+ case DRM_FORMAT_C8:
+ case DRM_FORMAT_RGB565:
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ break;
+ case DRM_FORMAT_XRGB1555:
+ case DRM_FORMAT_ARGB1555:
+ if (INTEL_INFO(dev)->gen > 3) {
+ DRM_DEBUG("unsupported pixel format: %s\n",
+ drm_get_format_name(mode_cmd->pixel_format));
+ return -EINVAL;
+ }
+ break;
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ case DRM_FORMAT_XRGB2101010:
+ case DRM_FORMAT_ARGB2101010:
+ case DRM_FORMAT_XBGR2101010:
+ case DRM_FORMAT_ABGR2101010:
+ if (INTEL_INFO(dev)->gen < 4) {
+ DRM_DEBUG("unsupported pixel format: %s\n",
+ drm_get_format_name(mode_cmd->pixel_format));
+ return -EINVAL;
+ }
+ break;
+ case DRM_FORMAT_YUYV:
+ case DRM_FORMAT_UYVY:
+ case DRM_FORMAT_YVYU:
+ case DRM_FORMAT_VYUY:
+ if (INTEL_INFO(dev)->gen < 5) {
+ DRM_DEBUG("unsupported pixel format: %s\n",
+ drm_get_format_name(mode_cmd->pixel_format));
+ return -EINVAL;
+ }
+ break;
+ default:
+ DRM_DEBUG("unsupported pixel format: %s\n",
+ drm_get_format_name(mode_cmd->pixel_format));
+ return -EINVAL;
+ }
+
+ /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
+ if (mode_cmd->offsets[0] != 0)
+ return -EINVAL;
+
+ aligned_height = intel_fb_align_height(dev, mode_cmd->height,
+ mode_cmd->pixel_format,
+ mode_cmd->modifier[0]);
+ /* FIXME drm helper for size checks (especially planar formats)? */
+ if (obj->base.size < aligned_height * mode_cmd->pitches[0])
+ return -EINVAL;
+
+ drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
+ intel_fb->obj = obj;
+ intel_fb->obj->framebuffer_references++;
+
+ ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
+ if (ret) {
+ DRM_ERROR("framebuffer init failed %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct drm_framebuffer *
+intel_user_framebuffer_create(struct drm_device *dev,
+ struct drm_file *filp,
+ struct drm_mode_fb_cmd2 *mode_cmd)
+{
+ struct drm_i915_gem_object *obj;
+
+ obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
+ mode_cmd->handles[0]));
+ if (&obj->base == NULL)
+ return ERR_PTR(-ENOENT);
+
+ return intel_framebuffer_create(dev, mode_cmd, obj);
+}
+
+#ifndef CONFIG_DRM_I915_FBDEV
+static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
+{
+}
+#endif
+
+static const struct drm_mode_config_funcs intel_mode_funcs = {
+ .fb_create = intel_user_framebuffer_create,
+ .output_poll_changed = intel_fbdev_output_poll_changed,
+ .atomic_check = intel_atomic_check,
+ .atomic_commit = intel_atomic_commit,
+};
+
+/* Set up chip specific display functions */
+static void intel_init_display(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (HAS_PCH_SPLIT(dev) || IS_G4X(dev))
+ dev_priv->display.find_dpll = g4x_find_best_dpll;
+ else if (IS_CHERRYVIEW(dev))
+ dev_priv->display.find_dpll = chv_find_best_dpll;
+ else if (IS_VALLEYVIEW(dev))
+ dev_priv->display.find_dpll = vlv_find_best_dpll;
+ else if (IS_PINEVIEW(dev))
+ dev_priv->display.find_dpll = pnv_find_best_dpll;
+ else
+ dev_priv->display.find_dpll = i9xx_find_best_dpll;
+
+ if (INTEL_INFO(dev)->gen >= 9) {
+ dev_priv->display.get_pipe_config = haswell_get_pipe_config;
+ dev_priv->display.get_initial_plane_config =
+ skylake_get_initial_plane_config;
+ dev_priv->display.crtc_compute_clock =
+ haswell_crtc_compute_clock;
+ dev_priv->display.crtc_enable = haswell_crtc_enable;
+ dev_priv->display.crtc_disable = haswell_crtc_disable;
+ dev_priv->display.off = ironlake_crtc_off;
+ dev_priv->display.update_primary_plane =
+ skylake_update_primary_plane;
+ } else if (HAS_DDI(dev)) {
+ dev_priv->display.get_pipe_config = haswell_get_pipe_config;
+ dev_priv->display.get_initial_plane_config =
+ ironlake_get_initial_plane_config;
+ dev_priv->display.crtc_compute_clock =
+ haswell_crtc_compute_clock;
+ dev_priv->display.crtc_enable = haswell_crtc_enable;
+ dev_priv->display.crtc_disable = haswell_crtc_disable;
+ dev_priv->display.off = ironlake_crtc_off;
+ dev_priv->display.update_primary_plane =
+ ironlake_update_primary_plane;
+ } else if (HAS_PCH_SPLIT(dev)) {
+ dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
+ dev_priv->display.get_initial_plane_config =
+ ironlake_get_initial_plane_config;
+ dev_priv->display.crtc_compute_clock =
+ ironlake_crtc_compute_clock;
+ dev_priv->display.crtc_enable = ironlake_crtc_enable;
+ dev_priv->display.crtc_disable = ironlake_crtc_disable;
+ dev_priv->display.off = ironlake_crtc_off;
+ dev_priv->display.update_primary_plane =
+ ironlake_update_primary_plane;
+ } else if (IS_VALLEYVIEW(dev)) {
+ dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
+ dev_priv->display.get_initial_plane_config =
+ i9xx_get_initial_plane_config;
+ dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
+ dev_priv->display.crtc_enable = valleyview_crtc_enable;
+ dev_priv->display.crtc_disable = i9xx_crtc_disable;
+ dev_priv->display.off = i9xx_crtc_off;
+ dev_priv->display.update_primary_plane =
+ i9xx_update_primary_plane;
+ } else {
+ dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
+ dev_priv->display.get_initial_plane_config =
+ i9xx_get_initial_plane_config;
+ dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
+ dev_priv->display.crtc_enable = i9xx_crtc_enable;
+ dev_priv->display.crtc_disable = i9xx_crtc_disable;
+ dev_priv->display.off = i9xx_crtc_off;
+ dev_priv->display.update_primary_plane =
+ i9xx_update_primary_plane;
+ }
+
+ /* Returns the core display clock speed */
+ if (IS_VALLEYVIEW(dev))
+ dev_priv->display.get_display_clock_speed =
+ valleyview_get_display_clock_speed;
+ else if (IS_I945G(dev) || (IS_G33(dev) && !IS_PINEVIEW_M(dev)))
+ dev_priv->display.get_display_clock_speed =
+ i945_get_display_clock_speed;
+ else if (IS_I915G(dev))
+ dev_priv->display.get_display_clock_speed =
+ i915_get_display_clock_speed;
+ else if (IS_I945GM(dev) || IS_845G(dev))
+ dev_priv->display.get_display_clock_speed =
+ i9xx_misc_get_display_clock_speed;
+ else if (IS_PINEVIEW(dev))
+ dev_priv->display.get_display_clock_speed =
+ pnv_get_display_clock_speed;
+ else if (IS_I915GM(dev))
+ dev_priv->display.get_display_clock_speed =
+ i915gm_get_display_clock_speed;
+ else if (IS_I865G(dev))
+ dev_priv->display.get_display_clock_speed =
+ i865_get_display_clock_speed;
+ else if (IS_I85X(dev))
+ dev_priv->display.get_display_clock_speed =
+ i855_get_display_clock_speed;
+ else /* 852, 830 */
+ dev_priv->display.get_display_clock_speed =
+ i830_get_display_clock_speed;
+
+ if (IS_GEN5(dev)) {
+ dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
+ } else if (IS_GEN6(dev)) {
+ dev_priv->display.fdi_link_train = gen6_fdi_link_train;
+ } else if (IS_IVYBRIDGE(dev)) {
+ /* FIXME: detect B0+ stepping and use auto training */
+ dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
+ } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+ dev_priv->display.fdi_link_train = hsw_fdi_link_train;
+ } else if (IS_VALLEYVIEW(dev)) {
+ dev_priv->display.modeset_global_resources =
+ valleyview_modeset_global_resources;
+ }
+
+ switch (INTEL_INFO(dev)->gen) {
+ case 2:
+ dev_priv->display.queue_flip = intel_gen2_queue_flip;
+ break;
+
+ case 3:
+ dev_priv->display.queue_flip = intel_gen3_queue_flip;
+ break;
+
+ case 4:
+ case 5:
+ dev_priv->display.queue_flip = intel_gen4_queue_flip;
+ break;
+
+ case 6:
+ dev_priv->display.queue_flip = intel_gen6_queue_flip;
+ break;
+ case 7:
+ case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
+ dev_priv->display.queue_flip = intel_gen7_queue_flip;
+ break;
+ case 9:
+ /* Drop through - unsupported since execlist only. */
+ default:
+ /* Default just returns -ENODEV to indicate unsupported */
+ dev_priv->display.queue_flip = intel_default_queue_flip;
+ }
+
+ intel_panel_init_backlight_funcs(dev);
+
+ mutex_init(&dev_priv->pps_mutex);
+}
+
+/*
+ * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
+ * resume, or other times. This quirk makes sure that's the case for
+ * affected systems.
+ */
+static void quirk_pipea_force(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ dev_priv->quirks |= QUIRK_PIPEA_FORCE;
+ DRM_INFO("applying pipe a force quirk\n");
+}
+
+static void quirk_pipeb_force(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ dev_priv->quirks |= QUIRK_PIPEB_FORCE;
+ DRM_INFO("applying pipe b force quirk\n");
+}
+
+/*
+ * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
+ */
+static void quirk_ssc_force_disable(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
+ DRM_INFO("applying lvds SSC disable quirk\n");
+}
+
+/*
+ * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
+ * brightness value
+ */
+static void quirk_invert_brightness(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
+ DRM_INFO("applying inverted panel brightness quirk\n");
+}
+
+/* Some VBT's incorrectly indicate no backlight is present */
+static void quirk_backlight_present(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
+ DRM_INFO("applying backlight present quirk\n");
+}
+
+struct intel_quirk {
+ int device;
+ int subsystem_vendor;
+ int subsystem_device;
+ void (*hook)(struct drm_device *dev);
+};
+
+/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
+struct intel_dmi_quirk {
+ void (*hook)(struct drm_device *dev);
+ const struct dmi_system_id (*dmi_id_list)[];
+};
+
+static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
+{
+ DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
+ return 1;
+}
+
+static const struct intel_dmi_quirk intel_dmi_quirks[] = {
+ {
+ .dmi_id_list = &(const struct dmi_system_id[]) {
+ {
+ .callback = intel_dmi_reverse_brightness,
+ .ident = "NCR Corporation",
+ .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, ""),
+ },
+ },
+ { } /* terminating entry */
+ },
+ .hook = quirk_invert_brightness,
+ },
+};
+
+static struct intel_quirk intel_quirks[] = {
+ /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
+ { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
+
+ /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
+ { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
+
+ /* 830 needs to leave pipe A & dpll A up */
+ { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
+
+ /* 830 needs to leave pipe B & dpll B up */
+ { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force },
+
+ /* Lenovo U160 cannot use SSC on LVDS */
+ { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
+
+ /* Sony Vaio Y cannot use SSC on LVDS */
+ { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
+
+ /* Acer Aspire 5734Z must invert backlight brightness */
+ { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
+
+ /* Acer/eMachines G725 */
+ { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
+
+ /* Acer/eMachines e725 */
+ { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
+
+ /* Acer/Packard Bell NCL20 */
+ { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
+
+ /* Acer Aspire 4736Z */
+ { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
+
+ /* Acer Aspire 5336 */
+ { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
+
+ /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
+ { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
+
+ /* Acer C720 Chromebook (Core i3 4005U) */
+ { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
+
+ /* Apple Macbook 2,1 (Core 2 T7400) */
+ { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
+
+ /* Toshiba CB35 Chromebook (Celeron 2955U) */
+ { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
+
+ /* HP Chromebook 14 (Celeron 2955U) */
+ { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
+
+ /* Dell Chromebook 11 */
+ { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
+};
+
+static void intel_init_quirks(struct drm_device *dev)
+{
+ struct pci_dev *d = dev->pdev;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
+ struct intel_quirk *q = &intel_quirks[i];
+
+ if (d->device == q->device &&
+ (d->subsystem_vendor == q->subsystem_vendor ||
+ q->subsystem_vendor == PCI_ANY_ID) &&
+ (d->subsystem_device == q->subsystem_device ||
+ q->subsystem_device == PCI_ANY_ID))
+ q->hook(dev);
+ }
+ for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
+ if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
+ intel_dmi_quirks[i].hook(dev);
+ }
+}
+
+/* Disable the VGA plane that we never use */
+static void i915_disable_vga(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u8 sr1;
+ u32 vga_reg = i915_vgacntrl_reg(dev);
+
+ /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
+ vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
+ outb(SR01, VGA_SR_INDEX);
+ sr1 = inb(VGA_SR_DATA);
+ outb(sr1 | 1<<5, VGA_SR_DATA);
+ vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
+ udelay(300);
+
+ I915_WRITE(vga_reg, VGA_DISP_DISABLE);
+ POSTING_READ(vga_reg);
+}
+
+void intel_modeset_init_hw(struct drm_device *dev)
+{
+ intel_prepare_ddi(dev);
+
+ if (IS_VALLEYVIEW(dev))
+ vlv_update_cdclk(dev);
+
+ intel_init_clock_gating(dev);
+
+ intel_enable_gt_powersave(dev);
+}
+
+void intel_modeset_init(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int sprite, ret;
+ enum pipe pipe;
+ struct intel_crtc *crtc;
+
+ drm_mode_config_init(dev);
+
+ dev->mode_config.min_width = 0;
+ dev->mode_config.min_height = 0;
+
+ dev->mode_config.preferred_depth = 24;
+ dev->mode_config.prefer_shadow = 1;
+
+ dev->mode_config.allow_fb_modifiers = true;
+
+ dev->mode_config.funcs = &intel_mode_funcs;
+
+ intel_init_quirks(dev);
+
+ intel_init_pm(dev);
+
+ if (INTEL_INFO(dev)->num_pipes == 0)
+ return;
+
+ intel_init_display(dev);
+ intel_init_audio(dev);
+
+ if (IS_GEN2(dev)) {
+ dev->mode_config.max_width = 2048;
+ dev->mode_config.max_height = 2048;
+ } else if (IS_GEN3(dev)) {
+ dev->mode_config.max_width = 4096;
+ dev->mode_config.max_height = 4096;
+ } else {
+ dev->mode_config.max_width = 8192;
+ dev->mode_config.max_height = 8192;
+ }
+
+ if (IS_845G(dev) || IS_I865G(dev)) {
+ dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512;
+ dev->mode_config.cursor_height = 1023;
+ } else if (IS_GEN2(dev)) {
+ dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH;
+ dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT;
+ } else {
+ dev->mode_config.cursor_width = MAX_CURSOR_WIDTH;
+ dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT;
+ }
+
+ dev->mode_config.fb_base = dev_priv->gtt.mappable_base;
+
+ DRM_DEBUG_KMS("%d display pipe%s available.\n",
+ INTEL_INFO(dev)->num_pipes,
+ INTEL_INFO(dev)->num_pipes > 1 ? "s" : "");
+
+ for_each_pipe(dev_priv, pipe) {
+ intel_crtc_init(dev, pipe);
+ for_each_sprite(dev_priv, pipe, sprite) {
+ ret = intel_plane_init(dev, pipe, sprite);
+ if (ret)
+ DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
+ pipe_name(pipe), sprite_name(pipe, sprite), ret);
+ }
+ }
+
+ intel_init_dpio(dev);
+
+ intel_shared_dpll_init(dev);
+
+ /* Just disable it once at startup */
+ i915_disable_vga(dev);
+ intel_setup_outputs(dev);
+
+ /* Just in case the BIOS is doing something questionable. */
+ intel_fbc_disable(dev);
+
+ drm_modeset_lock_all(dev);
+ intel_modeset_setup_hw_state(dev, false);
+ drm_modeset_unlock_all(dev);
+
+ for_each_intel_crtc(dev, crtc) {
+ if (!crtc->active)
+ continue;
+
+ /*
+ * Note that reserving the BIOS fb up front prevents us
+ * from stuffing other stolen allocations like the ring
+ * on top. This prevents some ugliness at boot time, and
+ * can even allow for smooth boot transitions if the BIOS
+ * fb is large enough for the active pipe configuration.
+ */
+ if (dev_priv->display.get_initial_plane_config) {
+ dev_priv->display.get_initial_plane_config(crtc,
+ &crtc->plane_config);
+ /*
+ * If the fb is shared between multiple heads, we'll
+ * just get the first one.
+ */
+ intel_find_initial_plane_obj(crtc, &crtc->plane_config);
+ }
+ }
+}
+
+static void intel_enable_pipe_a(struct drm_device *dev)
+{
+ struct intel_connector *connector;
+ struct drm_connector *crt = NULL;
+ struct intel_load_detect_pipe load_detect_temp;
+ struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
+
+ /* We can't just switch on the pipe A, we need to set things up with a
+ * proper mode and output configuration. As a gross hack, enable pipe A
+ * by enabling the load detect pipe once. */
+ for_each_intel_connector(dev, connector) {
+ if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
+ crt = &connector->base;
+ break;
+ }
+ }
+
+ if (!crt)
+ return;
+
+ if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx))
+ intel_release_load_detect_pipe(crt, &load_detect_temp, ctx);
+}
+
+static bool
+intel_check_plane_mapping(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 reg, val;
+
+ if (INTEL_INFO(dev)->num_pipes == 1)
+ return true;
+
+ reg = DSPCNTR(!crtc->plane);
+ val = I915_READ(reg);
+
+ if ((val & DISPLAY_PLANE_ENABLE) &&
+ (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
+ return false;
+
+ return true;
+}
+
+static void intel_sanitize_crtc(struct intel_crtc *crtc)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 reg;
+
+ /* Clear any frame start delays used for debugging left by the BIOS */
+ reg = PIPECONF(crtc->config->cpu_transcoder);
+ I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
+
+ /* restore vblank interrupts to correct state */
+ drm_crtc_vblank_reset(&crtc->base);
+ if (crtc->active) {
+ update_scanline_offset(crtc);
+ drm_crtc_vblank_on(&crtc->base);
+ }
+
+ /* We need to sanitize the plane -> pipe mapping first because this will
+ * disable the crtc (and hence change the state) if it is wrong. Note
+ * that gen4+ has a fixed plane -> pipe mapping. */
+ if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
+ struct intel_connector *connector;
+ bool plane;
+
+ DRM_DEBUG_KMS("[CRTC:%d] wrong plane connection detected!\n",
+ crtc->base.base.id);
+
+ /* Pipe has the wrong plane attached and the plane is active.
+ * Temporarily change the plane mapping and disable everything
+ * ... */
+ plane = crtc->plane;
+ crtc->plane = !plane;
+ crtc->primary_enabled = true;
+ dev_priv->display.crtc_disable(&crtc->base);
+ crtc->plane = plane;
+
+ /* ... and break all links. */
+ for_each_intel_connector(dev, connector) {
+ if (connector->encoder->base.crtc != &crtc->base)
+ continue;
+
+ connector->base.dpms = DRM_MODE_DPMS_OFF;
+ connector->base.encoder = NULL;
+ }
+ /* multiple connectors may have the same encoder:
+ * handle them and break crtc link separately */
+ for_each_intel_connector(dev, connector)
+ if (connector->encoder->base.crtc == &crtc->base) {
+ connector->encoder->base.crtc = NULL;
+ connector->encoder->connectors_active = false;
+ }
+
+ WARN_ON(crtc->active);
+ crtc->base.state->enable = false;
+ crtc->base.enabled = false;
+ }
+
+ if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
+ crtc->pipe == PIPE_A && !crtc->active) {
+ /* BIOS forgot to enable pipe A, this mostly happens after
+ * resume. Force-enable the pipe to fix this, the update_dpms
+ * call below we restore the pipe to the right state, but leave
+ * the required bits on. */
+ intel_enable_pipe_a(dev);
+ }
+
+ /* Adjust the state of the output pipe according to whether we
+ * have active connectors/encoders. */
+ intel_crtc_update_dpms(&crtc->base);
+
+ if (crtc->active != crtc->base.state->enable) {
+ struct intel_encoder *encoder;
+
+ /* This can happen either due to bugs in the get_hw_state
+ * functions or because the pipe is force-enabled due to the
+ * pipe A quirk. */
+ DRM_DEBUG_KMS("[CRTC:%d] hw state adjusted, was %s, now %s\n",
+ crtc->base.base.id,
+ crtc->base.state->enable ? "enabled" : "disabled",
+ crtc->active ? "enabled" : "disabled");
+
+ crtc->base.state->enable = crtc->active;
+ crtc->base.enabled = crtc->active;
+
+ /* Because we only establish the connector -> encoder ->
+ * crtc links if something is active, this means the
+ * crtc is now deactivated. Break the links. connector
+ * -> encoder links are only establish when things are
+ * actually up, hence no need to break them. */
+ WARN_ON(crtc->active);
+
+ for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
+ WARN_ON(encoder->connectors_active);
+ encoder->base.crtc = NULL;
+ }
+ }
+
+ if (crtc->active || HAS_GMCH_DISPLAY(dev)) {
+ /*
+ * We start out with underrun reporting disabled to avoid races.
+ * For correct bookkeeping mark this on active crtcs.
+ *
+ * Also on gmch platforms we dont have any hardware bits to
+ * disable the underrun reporting. Which means we need to start
+ * out with underrun reporting disabled also on inactive pipes,
+ * since otherwise we'll complain about the garbage we read when
+ * e.g. coming up after runtime pm.
+ *
+ * No protection against concurrent access is required - at
+ * worst a fifo underrun happens which also sets this to false.
+ */
+ crtc->cpu_fifo_underrun_disabled = true;
+ crtc->pch_fifo_underrun_disabled = true;
+ }
+}
+
+static void intel_sanitize_encoder(struct intel_encoder *encoder)
+{
+ struct intel_connector *connector;
+ struct drm_device *dev = encoder->base.dev;
+
+ /* We need to check both for a crtc link (meaning that the
+ * encoder is active and trying to read from a pipe) and the
+ * pipe itself being active. */
+ bool has_active_crtc = encoder->base.crtc &&
+ to_intel_crtc(encoder->base.crtc)->active;
+
+ if (encoder->connectors_active && !has_active_crtc) {
+ DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
+ encoder->base.base.id,
+ encoder->base.name);
+
+ /* Connector is active, but has no active pipe. This is
+ * fallout from our resume register restoring. Disable
+ * the encoder manually again. */
+ if (encoder->base.crtc) {
+ DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
+ encoder->base.base.id,
+ encoder->base.name);
+ encoder->disable(encoder);
+ if (encoder->post_disable)
+ encoder->post_disable(encoder);
+ }
+ encoder->base.crtc = NULL;
+ encoder->connectors_active = false;
+
+ /* Inconsistent output/port/pipe state happens presumably due to
+ * a bug in one of the get_hw_state functions. Or someplace else
+ * in our code, like the register restore mess on resume. Clamp
+ * things to off as a safer default. */
+ for_each_intel_connector(dev, connector) {
+ if (connector->encoder != encoder)
+ continue;
+ connector->base.dpms = DRM_MODE_DPMS_OFF;
+ connector->base.encoder = NULL;
+ }
+ }
+ /* Enabled encoders without active connectors will be fixed in
+ * the crtc fixup. */
+}
+
+void i915_redisable_vga_power_on(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 vga_reg = i915_vgacntrl_reg(dev);
+
+ if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
+ DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
+ i915_disable_vga(dev);
+ }
+}
+
+void i915_redisable_vga(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ /* This function can be called both from intel_modeset_setup_hw_state or
+ * at a very early point in our resume sequence, where the power well
+ * structures are not yet restored. Since this function is at a very
+ * paranoid "someone might have enabled VGA while we were not looking"
+ * level, just check if the power well is enabled instead of trying to
+ * follow the "don't touch the power well if we don't need it" policy
+ * the rest of the driver uses. */
+ if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_VGA))
+ return;
+
+ i915_redisable_vga_power_on(dev);
+}
+
+static bool primary_get_hw_state(struct intel_crtc *crtc)
+{
+ struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
+
+ if (!crtc->active)
+ return false;
+
+ return I915_READ(DSPCNTR(crtc->plane)) & DISPLAY_PLANE_ENABLE;
+}
+
+static void intel_modeset_readout_hw_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe;
+ struct intel_crtc *crtc;
+ struct intel_encoder *encoder;
+ struct intel_connector *connector;
+ int i;
+
+ for_each_intel_crtc(dev, crtc) {
+ memset(crtc->config, 0, sizeof(*crtc->config));
+
+ crtc->config->quirks |= PIPE_CONFIG_QUIRK_INHERITED_MODE;
+
+ crtc->active = dev_priv->display.get_pipe_config(crtc,
+ crtc->config);
+
+ crtc->base.state->enable = crtc->active;
+ crtc->base.enabled = crtc->active;
+ crtc->primary_enabled = primary_get_hw_state(crtc);
+
+ DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
+ crtc->base.base.id,
+ crtc->active ? "enabled" : "disabled");
+ }
+
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
+
+ pll->on = pll->get_hw_state(dev_priv, pll,
+ &pll->config.hw_state);
+ pll->active = 0;
+ pll->config.crtc_mask = 0;
+ for_each_intel_crtc(dev, crtc) {
+ if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll) {
+ pll->active++;
+ pll->config.crtc_mask |= 1 << crtc->pipe;
+ }
+ }
+
+ DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
+ pll->name, pll->config.crtc_mask, pll->on);
+
+ if (pll->config.crtc_mask)
+ intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
+ }
+
+ for_each_intel_encoder(dev, encoder) {
+ pipe = 0;
+
+ if (encoder->get_hw_state(encoder, &pipe)) {
+ crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
+ encoder->base.crtc = &crtc->base;
+ encoder->get_config(encoder, crtc->config);
+ } else {
+ encoder->base.crtc = NULL;
+ }
+
+ encoder->connectors_active = false;
+ DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
+ encoder->base.base.id,
+ encoder->base.name,
+ encoder->base.crtc ? "enabled" : "disabled",
+ pipe_name(pipe));
+ }
+
+ for_each_intel_connector(dev, connector) {
+ if (connector->get_hw_state(connector)) {
+ connector->base.dpms = DRM_MODE_DPMS_ON;
+ connector->encoder->connectors_active = true;
+ connector->base.encoder = &connector->encoder->base;
+ } else {
+ connector->base.dpms = DRM_MODE_DPMS_OFF;
+ connector->base.encoder = NULL;
+ }
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
+ connector->base.base.id,
+ connector->base.name,
+ connector->base.encoder ? "enabled" : "disabled");
+ }
+}
+
+/* Scan out the current hw modeset state, sanitizes it and maps it into the drm
+ * and i915 state tracking structures. */
+void intel_modeset_setup_hw_state(struct drm_device *dev,
+ bool force_restore)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum pipe pipe;
+ struct intel_crtc *crtc;
+ struct intel_encoder *encoder;
+ int i;
+
+ intel_modeset_readout_hw_state(dev);
+
+ /*
+ * Now that we have the config, copy it to each CRTC struct
+ * Note that this could go away if we move to using crtc_config
+ * checking everywhere.
+ */
+ for_each_intel_crtc(dev, crtc) {
+ if (crtc->active && i915.fastboot) {
+ intel_mode_from_pipe_config(&crtc->base.mode,
+ crtc->config);
+ DRM_DEBUG_KMS("[CRTC:%d] found active mode: ",
+ crtc->base.base.id);
+ drm_mode_debug_printmodeline(&crtc->base.mode);
+ }
+ }
+
+ /* HW state is read out, now we need to sanitize this mess. */
+ for_each_intel_encoder(dev, encoder) {
+ intel_sanitize_encoder(encoder);
+ }
+
+ for_each_pipe(dev_priv, pipe) {
+ crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
+ intel_sanitize_crtc(crtc);
+ intel_dump_pipe_config(crtc, crtc->config,
+ "[setup_hw_state]");
+ }
+
+ intel_modeset_update_connector_atomic_state(dev);
+
+ for (i = 0; i < dev_priv->num_shared_dpll; i++) {
+ struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
+
+ if (!pll->on || pll->active)
+ continue;
+
+ DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name);
+
+ pll->disable(dev_priv, pll);
+ pll->on = false;
+ }
+
+ if (IS_GEN9(dev))
+ skl_wm_get_hw_state(dev);
+ else if (HAS_PCH_SPLIT(dev))
+ ilk_wm_get_hw_state(dev);
+
+ if (force_restore) {
+ i915_redisable_vga(dev);
+
+ /*
+ * We need to use raw interfaces for restoring state to avoid
+ * checking (bogus) intermediate states.
+ */
+ for_each_pipe(dev_priv, pipe) {
+ struct drm_crtc *crtc =
+ dev_priv->pipe_to_crtc_mapping[pipe];
+
+ intel_crtc_restore_mode(crtc);
+ }
+ } else {
+ intel_modeset_update_staged_output_state(dev);
+ }
+
+ intel_modeset_check_state(dev);
+}
+
+void intel_modeset_gem_init(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *c;
+ struct drm_i915_gem_object *obj;
+ int ret;
+
+ mutex_lock(&dev->struct_mutex);
+ intel_init_gt_powersave(dev);
+ mutex_unlock(&dev->struct_mutex);
+
+ /*
+ * There may be no VBT; and if the BIOS enabled SSC we can
+ * just keep using it to avoid unnecessary flicker. Whereas if the
+ * BIOS isn't using it, don't assume it will work even if the VBT
+ * indicates as much.
+ */
+ if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+ dev_priv->vbt.lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
+ DREF_SSC1_ENABLE);
+
+ intel_modeset_init_hw(dev);
+
+ intel_setup_overlay(dev);
+
+ /*
+ * Make sure any fbs we allocated at startup are properly
+ * pinned & fenced. When we do the allocation it's too early
+ * for this.
+ */
+ for_each_crtc(dev, c) {
+ obj = intel_fb_obj(c->primary->fb);
+ if (obj == NULL)
+ continue;
+
+ mutex_lock(&dev->struct_mutex);
+ ret = intel_pin_and_fence_fb_obj(c->primary,
+ c->primary->fb,
+ c->primary->state,
+ NULL);
+ mutex_unlock(&dev->struct_mutex);
+ if (ret) {
+ DRM_ERROR("failed to pin boot fb on pipe %d\n",
+ to_intel_crtc(c)->pipe);
+ drm_framebuffer_unreference(c->primary->fb);
+ c->primary->fb = NULL;
+ update_state_fb(c->primary);
+ }
+ }
+
+ intel_backlight_register(dev);
+}
+
+void intel_connector_unregister(struct intel_connector *intel_connector)
+{
+ struct drm_connector *connector = &intel_connector->base;
+
+ intel_panel_destroy_backlight(connector);
+ drm_connector_unregister(connector);
+}
+
+void intel_modeset_cleanup(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_connector *connector;
+
+ intel_disable_gt_powersave(dev);
+
+ intel_backlight_unregister(dev);
+
+ /*
+ * Interrupts and polling as the first thing to avoid creating havoc.
+ * Too much stuff here (turning of connectors, ...) would
+ * experience fancy races otherwise.
+ */
+ intel_irq_uninstall(dev_priv);
+
+ /*
+ * Due to the hpd irq storm handling the hotplug work can re-arm the
+ * poll handlers. Hence disable polling after hpd handling is shut down.
+ */
+ drm_kms_helper_poll_fini(dev);
+
+ mutex_lock(&dev->struct_mutex);
+
+ intel_unregister_dsm_handler();
+
+ intel_fbc_disable(dev);
+
+ mutex_unlock(&dev->struct_mutex);
+
+ /* flush any delayed tasks or pending work */
+ flush_scheduled_work();
+
+ /* destroy the backlight and sysfs files before encoders/connectors */
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ struct intel_connector *intel_connector;
+
+ intel_connector = to_intel_connector(connector);
+ intel_connector->unregister(intel_connector);
+ }
+
+ drm_mode_config_cleanup(dev);
+
+ intel_cleanup_overlay(dev);
+
+ mutex_lock(&dev->struct_mutex);
+ intel_cleanup_gt_powersave(dev);
+ mutex_unlock(&dev->struct_mutex);
+}
+
+/*
+ * Return which encoder is currently attached for connector.
+ */
+struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
+{
+ return &intel_attached_encoder(connector)->base;
+}
+
+void intel_connector_attach_encoder(struct intel_connector *connector,
+ struct intel_encoder *encoder)
+{
+ connector->encoder = encoder;
+ drm_mode_connector_attach_encoder(&connector->base,
+ &encoder->base);
+}
+
+/*
+ * set vga decode state - true == enable VGA decode
+ */
+int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
+ u16 gmch_ctrl;
+
+ if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
+ DRM_ERROR("failed to read control word\n");
+ return -EIO;
+ }
+
+ if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
+ return 0;
+
+ if (state)
+ gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
+ else
+ gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
+
+ if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
+ DRM_ERROR("failed to write control word\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+struct intel_display_error_state {
+
+ u32 power_well_driver;
+
+ int num_transcoders;
+
+ struct intel_cursor_error_state {
+ u32 control;
+ u32 position;
+ u32 base;
+ u32 size;
+ } cursor[I915_MAX_PIPES];
+
+ struct intel_pipe_error_state {
+ bool power_domain_on;
+ u32 source;
+ u32 stat;
+ } pipe[I915_MAX_PIPES];
+
+ struct intel_plane_error_state {
+ u32 control;
+ u32 stride;
+ u32 size;
+ u32 pos;
+ u32 addr;
+ u32 surface;
+ u32 tile_offset;
+ } plane[I915_MAX_PIPES];
+
+ struct intel_transcoder_error_state {
+ bool power_domain_on;
+ enum transcoder cpu_transcoder;
+
+ u32 conf;
+
+ u32 htotal;
+ u32 hblank;
+ u32 hsync;
+ u32 vtotal;
+ u32 vblank;
+ u32 vsync;
+ } transcoder[4];
+};
+
+struct intel_display_error_state *
+intel_display_capture_error_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_display_error_state *error;
+ int transcoders[] = {
+ TRANSCODER_A,
+ TRANSCODER_B,
+ TRANSCODER_C,
+ TRANSCODER_EDP,
+ };
+ int i;
+
+ if (INTEL_INFO(dev)->num_pipes == 0)
+ return NULL;
+
+ error = kzalloc(sizeof(*error), GFP_ATOMIC);
+ if (error == NULL)
+ return NULL;
+
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+ error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
+
+ for_each_pipe(dev_priv, i) {
+ error->pipe[i].power_domain_on =
+ __intel_display_power_is_enabled(dev_priv,
+ POWER_DOMAIN_PIPE(i));
+ if (!error->pipe[i].power_domain_on)
+ continue;
+
+ error->cursor[i].control = I915_READ(CURCNTR(i));
+ error->cursor[i].position = I915_READ(CURPOS(i));
+ error->cursor[i].base = I915_READ(CURBASE(i));
+
+ error->plane[i].control = I915_READ(DSPCNTR(i));
+ error->plane[i].stride = I915_READ(DSPSTRIDE(i));
+ if (INTEL_INFO(dev)->gen <= 3) {
+ error->plane[i].size = I915_READ(DSPSIZE(i));
+ error->plane[i].pos = I915_READ(DSPPOS(i));
+ }
+ if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
+ error->plane[i].addr = I915_READ(DSPADDR(i));
+ if (INTEL_INFO(dev)->gen >= 4) {
+ error->plane[i].surface = I915_READ(DSPSURF(i));
+ error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
+ }
+
+ error->pipe[i].source = I915_READ(PIPESRC(i));
+
+ if (HAS_GMCH_DISPLAY(dev))
+ error->pipe[i].stat = I915_READ(PIPESTAT(i));
+ }
+
+ error->num_transcoders = INTEL_INFO(dev)->num_pipes;
+ if (HAS_DDI(dev_priv->dev))
+ error->num_transcoders++; /* Account for eDP. */
+
+ for (i = 0; i < error->num_transcoders; i++) {
+ enum transcoder cpu_transcoder = transcoders[i];
+
+ error->transcoder[i].power_domain_on =
+ __intel_display_power_is_enabled(dev_priv,
+ POWER_DOMAIN_TRANSCODER(cpu_transcoder));
+ if (!error->transcoder[i].power_domain_on)
+ continue;
+
+ error->transcoder[i].cpu_transcoder = cpu_transcoder;
+
+ error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
+ error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
+ error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
+ error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
+ error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
+ error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
+ error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
+ }
+
+ return error;
+}
+
+#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
+
+void
+intel_display_print_error_state(struct drm_i915_error_state_buf *m,
+ struct drm_device *dev,
+ struct intel_display_error_state *error)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int i;
+
+ if (!error)
+ return;
+
+ err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes);
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+ err_printf(m, "PWR_WELL_CTL2: %08x\n",
+ error->power_well_driver);
+ for_each_pipe(dev_priv, i) {
+ err_printf(m, "Pipe [%d]:\n", i);
+ err_printf(m, " Power: %s\n",
+ error->pipe[i].power_domain_on ? "on" : "off");
+ err_printf(m, " SRC: %08x\n", error->pipe[i].source);
+ err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
+
+ err_printf(m, "Plane [%d]:\n", i);
+ err_printf(m, " CNTR: %08x\n", error->plane[i].control);
+ err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
+ if (INTEL_INFO(dev)->gen <= 3) {
+ err_printf(m, " SIZE: %08x\n", error->plane[i].size);
+ err_printf(m, " POS: %08x\n", error->plane[i].pos);
+ }
+ if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
+ err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
+ if (INTEL_INFO(dev)->gen >= 4) {
+ err_printf(m, " SURF: %08x\n", error->plane[i].surface);
+ err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
+ }
+
+ err_printf(m, "Cursor [%d]:\n", i);
+ err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
+ err_printf(m, " POS: %08x\n", error->cursor[i].position);
+ err_printf(m, " BASE: %08x\n", error->cursor[i].base);
+ }
+
+ for (i = 0; i < error->num_transcoders; i++) {
+ err_printf(m, "CPU transcoder: %c\n",
+ transcoder_name(error->transcoder[i].cpu_transcoder));
+ err_printf(m, " Power: %s\n",
+ error->transcoder[i].power_domain_on ? "on" : "off");
+ err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
+ err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
+ err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
+ err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
+ err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
+ err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
+ err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);
+ }
+}
+
+void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file)
+{
+ struct intel_crtc *crtc;
+
+ for_each_intel_crtc(dev, crtc) {
+ struct intel_unpin_work *work;
+
+ spin_lock_irq(&dev->event_lock);
+
+ work = crtc->unpin_work;
+
+ if (work && work->event &&
+ work->event->base.file_priv == file) {
+ kfree(work->event);
+ work->event = NULL;
+ }
+
+ spin_unlock_irq(&dev->event_lock);
+ }
+}
Code Review / kvmfornfv.git / blobdiff