--- /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/i2c.h>
+#include <drm/drmP.h>
+
+#include "intel_bios.h"
+#include "psb_drv.h"
+#include "psb_intel_drv.h"
+#include "psb_intel_reg.h"
+#include "power.h"
+#include "cdv_device.h"
+#include <linux/pm_runtime.h>
+
+
+static void cdv_intel_crt_dpms(struct drm_encoder *encoder, int mode)
+{
+ struct drm_device *dev = encoder->dev;
+ u32 temp, reg;
+ reg = ADPA;
+
+ temp = REG_READ(reg);
+ temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
+ temp &= ~ADPA_DAC_ENABLE;
+
+ switch (mode) {
+ case DRM_MODE_DPMS_ON:
+ temp |= ADPA_DAC_ENABLE;
+ break;
+ case DRM_MODE_DPMS_STANDBY:
+ temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
+ break;
+ case DRM_MODE_DPMS_SUSPEND:
+ temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
+ break;
+ case DRM_MODE_DPMS_OFF:
+ temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
+ break;
+ }
+
+ REG_WRITE(reg, temp);
+}
+
+static int cdv_intel_crt_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+ return MODE_NO_DBLESCAN;
+
+ /* The lowest clock for CDV is 20000KHz */
+ if (mode->clock < 20000)
+ return MODE_CLOCK_LOW;
+
+ /* The max clock for CDV is 355 instead of 400 */
+ if (mode->clock > 355000)
+ return MODE_CLOCK_HIGH;
+
+ return MODE_OK;
+}
+
+static void cdv_intel_crt_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+
+ struct drm_device *dev = encoder->dev;
+ struct drm_crtc *crtc = encoder->crtc;
+ struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
+ int dpll_md_reg;
+ u32 adpa, dpll_md;
+ u32 adpa_reg;
+
+ if (gma_crtc->pipe == 0)
+ dpll_md_reg = DPLL_A_MD;
+ else
+ dpll_md_reg = DPLL_B_MD;
+
+ adpa_reg = ADPA;
+
+ /*
+ * Disable separate mode multiplier used when cloning SDVO to CRT
+ * XXX this needs to be adjusted when we really are cloning
+ */
+ {
+ dpll_md = REG_READ(dpll_md_reg);
+ REG_WRITE(dpll_md_reg,
+ dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK);
+ }
+
+ adpa = 0;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+ adpa |= ADPA_HSYNC_ACTIVE_HIGH;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+ adpa |= ADPA_VSYNC_ACTIVE_HIGH;
+
+ if (gma_crtc->pipe == 0)
+ adpa |= ADPA_PIPE_A_SELECT;
+ else
+ adpa |= ADPA_PIPE_B_SELECT;
+
+ REG_WRITE(adpa_reg, adpa);
+}
+
+
+/**
+ * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
+ *
+ * \return true if CRT is connected.
+ * \return false if CRT is disconnected.
+ */
+static bool cdv_intel_crt_detect_hotplug(struct drm_connector *connector,
+ bool force)
+{
+ struct drm_device *dev = connector->dev;
+ u32 hotplug_en;
+ int i, tries = 0, ret = false;
+ u32 orig;
+
+ /*
+ * On a CDV thep, CRT detect sequence need to be done twice
+ * to get a reliable result.
+ */
+ tries = 2;
+
+ orig = hotplug_en = REG_READ(PORT_HOTPLUG_EN);
+ hotplug_en &= ~(CRT_HOTPLUG_DETECT_MASK);
+ hotplug_en |= CRT_HOTPLUG_FORCE_DETECT;
+
+ hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
+ hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
+
+ for (i = 0; i < tries ; i++) {
+ unsigned long timeout;
+ /* turn on the FORCE_DETECT */
+ REG_WRITE(PORT_HOTPLUG_EN, hotplug_en);
+ timeout = jiffies + msecs_to_jiffies(1000);
+ /* wait for FORCE_DETECT to go off */
+ do {
+ if (!(REG_READ(PORT_HOTPLUG_EN) &
+ CRT_HOTPLUG_FORCE_DETECT))
+ break;
+ msleep(1);
+ } while (time_after(timeout, jiffies));
+ }
+
+ if ((REG_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) !=
+ CRT_HOTPLUG_MONITOR_NONE)
+ ret = true;
+
+ /* clear the interrupt we just generated, if any */
+ REG_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
+
+ /* and put the bits back */
+ REG_WRITE(PORT_HOTPLUG_EN, orig);
+ return ret;
+}
+
+static enum drm_connector_status cdv_intel_crt_detect(
+ struct drm_connector *connector, bool force)
+{
+ if (cdv_intel_crt_detect_hotplug(connector, force))
+ return connector_status_connected;
+ else
+ return connector_status_disconnected;
+}
+
+static void cdv_intel_crt_destroy(struct drm_connector *connector)
+{
+ struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
+
+ psb_intel_i2c_destroy(gma_encoder->ddc_bus);
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+ kfree(connector);
+}
+
+static int cdv_intel_crt_get_modes(struct drm_connector *connector)
+{
+ struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
+ return psb_intel_ddc_get_modes(connector,
+ &gma_encoder->ddc_bus->adapter);
+}
+
+static int cdv_intel_crt_set_property(struct drm_connector *connector,
+ struct drm_property *property,
+ uint64_t value)
+{
+ return 0;
+}
+
+/*
+ * Routines for controlling stuff on the analog port
+ */
+
+static const struct drm_encoder_helper_funcs cdv_intel_crt_helper_funcs = {
+ .dpms = cdv_intel_crt_dpms,
+ .mode_fixup = gma_encoder_mode_fixup,
+ .prepare = gma_encoder_prepare,
+ .commit = gma_encoder_commit,
+ .mode_set = cdv_intel_crt_mode_set,
+};
+
+static const struct drm_connector_funcs cdv_intel_crt_connector_funcs = {
+ .dpms = drm_helper_connector_dpms,
+ .detect = cdv_intel_crt_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = cdv_intel_crt_destroy,
+ .set_property = cdv_intel_crt_set_property,
+};
+
+static const struct drm_connector_helper_funcs
+ cdv_intel_crt_connector_helper_funcs = {
+ .mode_valid = cdv_intel_crt_mode_valid,
+ .get_modes = cdv_intel_crt_get_modes,
+ .best_encoder = gma_best_encoder,
+};
+
+static void cdv_intel_crt_enc_destroy(struct drm_encoder *encoder)
+{
+ drm_encoder_cleanup(encoder);
+}
+
+static const struct drm_encoder_funcs cdv_intel_crt_enc_funcs = {
+ .destroy = cdv_intel_crt_enc_destroy,
+};
+
+void cdv_intel_crt_init(struct drm_device *dev,
+ struct psb_intel_mode_device *mode_dev)
+{
+
+ struct gma_connector *gma_connector;
+ struct gma_encoder *gma_encoder;
+ struct drm_connector *connector;
+ struct drm_encoder *encoder;
+
+ u32 i2c_reg;
+
+ gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
+ if (!gma_encoder)
+ return;
+
+ gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL);
+ if (!gma_connector)
+ goto failed_connector;
+
+ connector = &gma_connector->base;
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+ drm_connector_init(dev, connector,
+ &cdv_intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
+
+ encoder = &gma_encoder->base;
+ drm_encoder_init(dev, encoder,
+ &cdv_intel_crt_enc_funcs, DRM_MODE_ENCODER_DAC);
+
+ gma_connector_attach_encoder(gma_connector, gma_encoder);
+
+ /* Set up the DDC bus. */
+ i2c_reg = GPIOA;
+ /* Remove the following code for CDV */
+ /*
+ if (dev_priv->crt_ddc_bus != 0)
+ i2c_reg = dev_priv->crt_ddc_bus;
+ }*/
+ gma_encoder->ddc_bus = psb_intel_i2c_create(dev,
+ i2c_reg, "CRTDDC_A");
+ if (!gma_encoder->ddc_bus) {
+ dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
+ "failed.\n");
+ goto failed_ddc;
+ }
+
+ gma_encoder->type = INTEL_OUTPUT_ANALOG;
+ /*
+ psb_intel_output->clone_mask = (1 << INTEL_ANALOG_CLONE_BIT);
+ psb_intel_output->crtc_mask = (1 << 0) | (1 << 1);
+ */
+ connector->interlace_allowed = 0;
+ connector->doublescan_allowed = 0;
+
+ drm_encoder_helper_add(encoder, &cdv_intel_crt_helper_funcs);
+ drm_connector_helper_add(connector,
+ &cdv_intel_crt_connector_helper_funcs);
+
+ drm_connector_register(connector);
+
+ return;
+failed_ddc:
+ drm_encoder_cleanup(&gma_encoder->base);
+ drm_connector_cleanup(&gma_connector->base);
+ kfree(gma_connector);
+failed_connector:
+ kfree(gma_encoder);
+ return;
+}
Code Review / kvmfornfv.git / blobdiff