+++ /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