drm/sti: atomic crtc/plane update
Better fit STI hardware structure.
Planes are no more responsible of updating mixer information such
as z-order and status. It is now up to the CRTC atomic flush to
do it. Plane actions (enable or disable) are performed atomically.
Disabling of a plane is synchronize with the vsync event.
Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
diff --git a/drivers/gpu/drm/sti/sti_crtc.c b/drivers/gpu/drm/sti/sti_crtc.c
index 27b3ef2..23fc2db 100644
--- a/drivers/gpu/drm/sti/sti_crtc.c
+++ b/drivers/gpu/drm/sti/sti_crtc.c
@@ -17,20 +17,18 @@
#include "sti_compositor.h"
#include "sti_crtc.h"
#include "sti_drv.h"
+#include "sti_vid.h"
#include "sti_vtg.h"
-static void sti_crtc_dpms(struct drm_crtc *crtc, int mode)
-{
- DRM_DEBUG_KMS("\n");
-}
-
-static void sti_crtc_prepare(struct drm_crtc *crtc)
+static void sti_crtc_enable(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;
+ DRM_DEBUG_DRIVER("\n");
+
+ mixer->status = STI_MIXER_READY;
/* Prepare and enable the compo IP clock */
if (mixer->id == STI_MIXER_MAIN) {
@@ -41,31 +39,16 @@
DRM_INFO("Failed to prepare/enable compo_aux clk\n");
}
- sti_mixer_clear_all_planes(mixer);
+ drm_crtc_vblank_on(crtc);
}
-static void sti_crtc_commit(struct drm_crtc *crtc)
+static void sti_crtc_disabling(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_plane *plane;
- if ((!mixer || !compo)) {
- DRM_ERROR("Can't find mixer or compositor)\n");
- return;
- }
+ DRM_DEBUG_DRIVER("\n");
- /* get GDP which is reserved to the CRTC FB */
- plane = to_sti_plane(crtc->primary);
- if (!plane)
- DRM_ERROR("Can't find CRTC dedicated plane (GDP0)\n");
-
- /* Enable plane on mixer */
- if (sti_mixer_set_plane_status(mixer, plane, true))
- DRM_ERROR("Cannot enable plane at mixer\n");
-
- drm_crtc_vblank_on(crtc);
+ mixer->status = STI_MIXER_DISABLING;
}
static bool sti_crtc_mode_fixup(struct drm_crtc *crtc,
@@ -133,9 +116,6 @@
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 */
@@ -152,13 +132,13 @@
clk_disable_unprepare(compo->clk_compo_aux);
}
- mixer->enabled = false;
+ mixer->status = STI_MIXER_DISABLED;
}
static void
sti_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
- sti_crtc_prepare(crtc);
+ sti_crtc_enable(crtc);
sti_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
}
@@ -178,17 +158,79 @@
static void sti_crtc_atomic_flush(struct drm_crtc *crtc)
{
+ struct drm_device *drm_dev = crtc->dev;
+ struct sti_mixer *mixer = to_sti_mixer(crtc);
+ struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
+ struct drm_plane *p;
+
+ DRM_DEBUG_DRIVER("\n");
+
+ /* perform plane actions */
+ list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
+ struct sti_plane *plane = to_sti_plane(p);
+
+ switch (plane->status) {
+ case STI_PLANE_UPDATED:
+ /* update planes tag as updated */
+ DRM_DEBUG_DRIVER("update plane %s\n",
+ sti_plane_to_str(plane));
+
+ if (sti_mixer_set_plane_depth(mixer, plane)) {
+ DRM_ERROR("Cannot set plane %s depth\n",
+ sti_plane_to_str(plane));
+ break;
+ }
+
+ if (sti_mixer_set_plane_status(mixer, plane, true)) {
+ DRM_ERROR("Cannot enable plane %s at mixer\n",
+ sti_plane_to_str(plane));
+ break;
+ }
+
+ /* if plane is HQVDP_0 then commit the vid[0] */
+ if (plane->desc == STI_HQVDP_0)
+ sti_vid_commit(compo->vid[0], p->state);
+
+ plane->status = STI_PLANE_READY;
+
+ break;
+ case STI_PLANE_DISABLING:
+ /* disabling sequence for planes tag as disabling */
+ DRM_DEBUG_DRIVER("disable plane %s from mixer\n",
+ sti_plane_to_str(plane));
+
+ if (sti_mixer_set_plane_status(mixer, plane, false)) {
+ DRM_ERROR("Cannot disable plane %s at mixer\n",
+ sti_plane_to_str(plane));
+ continue;
+ }
+
+ if (plane->desc == STI_CURSOR)
+ /* tag plane status for disabled */
+ plane->status = STI_PLANE_DISABLED;
+ else
+ /* tag plane status for flushing */
+ plane->status = STI_PLANE_FLUSHING;
+
+ /* if plane is HQVDP_0 then disable the vid[0] */
+ if (plane->desc == STI_HQVDP_0)
+ sti_vid_disable(compo->vid[0]);
+
+ break;
+ default:
+ /* Other status case are not handled */
+ break;
+ }
+ }
}
static struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
- .dpms = sti_crtc_dpms,
- .prepare = sti_crtc_prepare,
- .commit = sti_crtc_commit,
+ .enable = sti_crtc_enable,
+ .disable = sti_crtc_disabling,
.mode_fixup = sti_crtc_mode_fixup,
.mode_set = drm_helper_crtc_mode_set,
.mode_set_nofb = sti_crtc_mode_set_nofb,
.mode_set_base = drm_helper_crtc_mode_set_base,
- .disable = sti_crtc_disable,
.atomic_begin = sti_crtc_atomic_begin,
.atomic_flush = sti_crtc_atomic_flush,
};
@@ -237,6 +279,21 @@
}
spin_unlock_irqrestore(&drm_dev->event_lock, flags);
+ if (compo->mixer[*crtc]->status == STI_MIXER_DISABLING) {
+ struct drm_plane *p;
+
+ /* Disable mixer only if all overlay planes (GDP and VDP)
+ * are disabled */
+ list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
+ struct sti_plane *plane = to_sti_plane(p);
+
+ if ((plane->desc & STI_PLANE_TYPE_MASK) <= STI_VDP)
+ if (plane->status != STI_PLANE_DISABLED)
+ return 0;
+ }
+ sti_crtc_disable(&compo->mixer[*crtc]->drm_crtc);
+ }
+
return 0;
}
@@ -259,9 +316,9 @@
}
EXPORT_SYMBOL(sti_crtc_enable_vblank);
-void sti_crtc_disable_vblank(struct drm_device *dev, int crtc)
+void sti_crtc_disable_vblank(struct drm_device *drm_dev, int crtc)
{
- struct sti_private *priv = dev->dev_private;
+ struct sti_private *priv = drm_dev->dev_private;
struct sti_compositor *compo = priv->compo;
struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
@@ -273,7 +330,7 @@
/* free the resources of the pending requests */
if (compo->mixer[crtc]->pending_event) {
- drm_vblank_put(dev, crtc);
+ drm_vblank_put(drm_dev, crtc);
compo->mixer[crtc]->pending_event = NULL;
}
}