--- /dev/null
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ * Fabien Dessenne <fabien.dessenne@st.com>
+ * for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/clk.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_plane_helper.h>
+
+#include "sti_compositor.h"
+#include "sti_drm_drv.h"
+#include "sti_drm_crtc.h"
+#include "sti_vtg.h"
+
+static void sti_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
+{
+ DRM_DEBUG_KMS("\n");
+}
+
+static void sti_drm_crtc_prepare(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+
+ mixer->enabled = true;
+
+ /* Prepare and enable the compo IP clock */
+ if (mixer->id == STI_MIXER_MAIN) {
+ if (clk_prepare_enable(compo->clk_compo_main))
+ DRM_INFO("Failed to prepare/enable compo_main clk\n");
+ } else {
+ if (clk_prepare_enable(compo->clk_compo_aux))
+ DRM_INFO("Failed to prepare/enable compo_aux clk\n");
+ }
+
+ sti_mixer_clear_all_layers(mixer);
+}
+
+static void sti_drm_crtc_commit(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+ struct sti_layer *layer;
+
+ if ((!mixer || !compo)) {
+ DRM_ERROR("Can not find mixer or compositor)\n");
+ return;
+ }
+
+ /* get GDP which is reserved to the CRTC FB */
+ layer = to_sti_layer(crtc->primary);
+ if (layer)
+ sti_layer_commit(layer);
+ else
+ DRM_ERROR("Can not find CRTC dedicated plane (GDP0)\n");
+
+ /* Enable layer on mixer */
+ if (sti_mixer_set_layer_status(mixer, layer, true))
+ DRM_ERROR("Can not enable layer at mixer\n");
+
+ drm_crtc_vblank_on(crtc);
+}
+
+static bool sti_drm_crtc_mode_fixup(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ /* accept the provided drm_display_mode, do not fix it up */
+ return true;
+}
+
+static int
+sti_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+ struct clk *clk;
+ int rate = mode->clock * 1000;
+ int res;
+
+ DRM_DEBUG_KMS("CRTC:%d (%s) mode:%d (%s)\n",
+ crtc->base.id, sti_mixer_to_str(mixer),
+ mode->base.id, mode->name);
+
+ DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
+ mode->vrefresh, mode->clock,
+ mode->hdisplay,
+ mode->hsync_start, mode->hsync_end,
+ mode->htotal,
+ mode->vdisplay,
+ mode->vsync_start, mode->vsync_end,
+ mode->vtotal, mode->type, mode->flags);
+
+ /* Set rate and prepare/enable pixel clock */
+ if (mixer->id == STI_MIXER_MAIN)
+ clk = compo->clk_pix_main;
+ else
+ clk = compo->clk_pix_aux;
+
+ res = clk_set_rate(clk, rate);
+ if (res < 0) {
+ DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);
+ return -EINVAL;
+ }
+ if (clk_prepare_enable(clk)) {
+ DRM_ERROR("Failed to prepare/enable pix clk\n");
+ return -EINVAL;
+ }
+
+ sti_vtg_set_config(mixer->id == STI_MIXER_MAIN ?
+ compo->vtg_main : compo->vtg_aux, &crtc->mode);
+
+ res = sti_mixer_active_video_area(mixer, &crtc->mode);
+ if (res) {
+ DRM_ERROR("Can not set active video area\n");
+ return -EINVAL;
+ }
+
+ return res;
+}
+
+static void sti_drm_crtc_disable(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct device *dev = mixer->dev;
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+
+ if (!mixer->enabled)
+ return;
+
+ DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
+
+ /* Disable Background */
+ sti_mixer_set_background_status(mixer, false);
+
+ drm_crtc_vblank_off(crtc);
+
+ /* Disable pixel clock and compo IP clocks */
+ if (mixer->id == STI_MIXER_MAIN) {
+ clk_disable_unprepare(compo->clk_pix_main);
+ clk_disable_unprepare(compo->clk_compo_main);
+ } else {
+ clk_disable_unprepare(compo->clk_pix_aux);
+ clk_disable_unprepare(compo->clk_compo_aux);
+ }
+
+ mixer->enabled = false;
+}
+
+static void
+sti_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
+{
+ sti_drm_crtc_prepare(crtc);
+ sti_drm_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
+}
+
+static void sti_drm_atomic_begin(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+
+ if (crtc->state->event) {
+ crtc->state->event->pipe = drm_crtc_index(crtc);
+
+ WARN_ON(drm_crtc_vblank_get(crtc) != 0);
+
+ mixer->pending_event = crtc->state->event;
+ crtc->state->event = NULL;
+ }
+}
+
+static void sti_drm_atomic_flush(struct drm_crtc *crtc)
+{
+}
+
+static struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
+ .dpms = sti_drm_crtc_dpms,
+ .prepare = sti_drm_crtc_prepare,
+ .commit = sti_drm_crtc_commit,
+ .mode_fixup = sti_drm_crtc_mode_fixup,
+ .mode_set = drm_helper_crtc_mode_set,
+ .mode_set_nofb = sti_drm_crtc_mode_set_nofb,
+ .mode_set_base = drm_helper_crtc_mode_set_base,
+ .disable = sti_drm_crtc_disable,
+ .atomic_begin = sti_drm_atomic_begin,
+ .atomic_flush = sti_drm_atomic_flush,
+};
+
+static void sti_drm_crtc_destroy(struct drm_crtc *crtc)
+{
+ DRM_DEBUG_KMS("\n");
+ drm_crtc_cleanup(crtc);
+}
+
+static int sti_drm_crtc_set_property(struct drm_crtc *crtc,
+ struct drm_property *property,
+ uint64_t val)
+{
+ DRM_DEBUG_KMS("\n");
+ return 0;
+}
+
+int sti_drm_crtc_vblank_cb(struct notifier_block *nb,
+ unsigned long event, void *data)
+{
+ struct drm_device *drm_dev;
+ struct sti_compositor *compo =
+ container_of(nb, struct sti_compositor, vtg_vblank_nb);
+ int *crtc = data;
+ unsigned long flags;
+ struct sti_drm_private *priv;
+
+ drm_dev = compo->mixer[*crtc]->drm_crtc.dev;
+ priv = drm_dev->dev_private;
+
+ if ((event != VTG_TOP_FIELD_EVENT) &&
+ (event != VTG_BOTTOM_FIELD_EVENT)) {
+ DRM_ERROR("unknown event: %lu\n", event);
+ return -EINVAL;
+ }
+
+ drm_handle_vblank(drm_dev, *crtc);
+
+ spin_lock_irqsave(&drm_dev->event_lock, flags);
+ if (compo->mixer[*crtc]->pending_event) {
+ drm_send_vblank_event(drm_dev, -1,
+ compo->mixer[*crtc]->pending_event);
+ drm_vblank_put(drm_dev, *crtc);
+ compo->mixer[*crtc]->pending_event = NULL;
+ }
+ spin_unlock_irqrestore(&drm_dev->event_lock, flags);
+
+ return 0;
+}
+
+int sti_drm_crtc_enable_vblank(struct drm_device *dev, int crtc)
+{
+ struct sti_drm_private *dev_priv = dev->dev_private;
+ struct sti_compositor *compo = dev_priv->compo;
+ struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
+
+ if (sti_vtg_register_client(crtc == STI_MIXER_MAIN ?
+ compo->vtg_main : compo->vtg_aux,
+ vtg_vblank_nb, crtc)) {
+ DRM_ERROR("Cannot register VTG notifier\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(sti_drm_crtc_enable_vblank);
+
+void sti_drm_crtc_disable_vblank(struct drm_device *dev, int crtc)
+{
+ struct sti_drm_private *priv = dev->dev_private;
+ struct sti_compositor *compo = priv->compo;
+ struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
+
+ DRM_DEBUG_DRIVER("\n");
+
+ if (sti_vtg_unregister_client(crtc == STI_MIXER_MAIN ?
+ compo->vtg_main : compo->vtg_aux, vtg_vblank_nb))
+ DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
+
+ /* free the resources of the pending requests */
+ if (compo->mixer[crtc]->pending_event) {
+ drm_vblank_put(dev, crtc);
+ compo->mixer[crtc]->pending_event = NULL;
+ }
+}
+EXPORT_SYMBOL(sti_drm_crtc_disable_vblank);
+
+static struct drm_crtc_funcs sti_crtc_funcs = {
+ .set_config = drm_atomic_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
+ .destroy = sti_drm_crtc_destroy,
+ .set_property = sti_drm_crtc_set_property,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
+
+bool sti_drm_crtc_is_main(struct drm_crtc *crtc)
+{
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+
+ if (mixer->id == STI_MIXER_MAIN)
+ return true;
+
+ return false;
+}
+EXPORT_SYMBOL(sti_drm_crtc_is_main);
+
+int sti_drm_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
+ struct drm_plane *primary, struct drm_plane *cursor)
+{
+ struct drm_crtc *crtc = &mixer->drm_crtc;
+ int res;
+
+ res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
+ &sti_crtc_funcs);
+ if (res) {
+ DRM_ERROR("Can not initialze CRTC\n");
+ return -EINVAL;
+ }
+
+ drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);
+
+ DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
+ crtc->base.id, sti_mixer_to_str(mixer));
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff