drm/exynos: wait all planes updates to finish
Add infrastructure to wait for all planes updates to finish by using
an atomic_t variable to track how many pending updates we are waiting
plus a wait_queue for the wait part.
It also changes vblank behaviour and keeps it enabled for all types
of updates
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index b06fbd4..7193d94 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -136,6 +136,8 @@
* this pipe value.
* @enabled: if the crtc is enabled or not
* @event: vblank event that is currently queued for flip
+ * @wait_update: wait all pending planes updates to finish
+ * @pending_update: number of pending plane updates in this crtc
* @ops: pointer to callbacks for exynos drm specific functionality
* @ctx: A pointer to the crtc's implementation specific context
*/
@@ -145,6 +147,8 @@
unsigned int pipe;
wait_queue_head_t pending_flip_queue;
struct drm_pending_vblank_event *event;
+ wait_queue_head_t wait_update;
+ atomic_t pending_update;
const struct exynos_drm_crtc_ops *ops;
void *ctx;
};