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path: root/drivers/gpu/drm/exynos/exynos_drm_crtc.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_crtc.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_crtc.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index e8894bc9e6d5..c200e4d71e3d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -48,6 +48,8 @@ struct exynos_drm_crtc {
unsigned int pipe;
unsigned int dpms;
enum exynos_crtc_mode mode;
+ wait_queue_head_t pending_flip_queue;
+ atomic_t pending_flip;
};
static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
@@ -61,6 +63,13 @@ static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
return;
}
+ if (mode > DRM_MODE_DPMS_ON) {
+ /* wait for the completion of page flip. */
+ wait_event(exynos_crtc->pending_flip_queue,
+ atomic_read(&exynos_crtc->pending_flip) == 0);
+ drm_vblank_off(crtc->dev, exynos_crtc->pipe);
+ }
+
exynos_drm_fn_encoder(crtc, &mode, exynos_drm_encoder_crtc_dpms);
exynos_crtc->dpms = mode;
}
@@ -217,7 +226,6 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
ret = drm_vblank_get(dev, exynos_crtc->pipe);
if (ret) {
DRM_DEBUG("failed to acquire vblank counter\n");
- list_del(&event->base.link);
goto out;
}
@@ -225,6 +233,7 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
spin_lock_irq(&dev->event_lock);
list_add_tail(&event->base.link,
&dev_priv->pageflip_event_list);
+ atomic_set(&exynos_crtc->pending_flip, 1);
spin_unlock_irq(&dev->event_lock);
crtc->fb = fb;
@@ -344,6 +353,8 @@ int exynos_drm_crtc_create(struct drm_device *dev, unsigned int nr)
exynos_crtc->pipe = nr;
exynos_crtc->dpms = DRM_MODE_DPMS_OFF;
+ init_waitqueue_head(&exynos_crtc->pending_flip_queue);
+ atomic_set(&exynos_crtc->pending_flip, 0);
exynos_crtc->plane = exynos_plane_init(dev, 1 << nr, true);
if (!exynos_crtc->plane) {
kfree(exynos_crtc);
@@ -398,7 +409,8 @@ void exynos_drm_crtc_finish_pageflip(struct drm_device *dev, int crtc)
{
struct exynos_drm_private *dev_priv = dev->dev_private;
struct drm_pending_vblank_event *e, *t;
- struct timeval now;
+ struct drm_crtc *drm_crtc = dev_priv->crtc[crtc];
+ struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(drm_crtc);
unsigned long flags;
DRM_DEBUG_KMS("%s\n", __FILE__);
@@ -411,14 +423,11 @@ void exynos_drm_crtc_finish_pageflip(struct drm_device *dev, int crtc)
if (crtc != e->pipe)
continue;
- do_gettimeofday(&now);
- e->event.sequence = 0;
- e->event.tv_sec = now.tv_sec;
- e->event.tv_usec = now.tv_usec;
-
- list_move_tail(&e->base.link, &e->base.file_priv->event_list);
- wake_up_interruptible(&e->base.file_priv->event_wait);
+ list_del(&e->base.link);
+ drm_send_vblank_event(dev, -1, e);
drm_vblank_put(dev, crtc);
+ atomic_set(&exynos_crtc->pending_flip, 0);
+ wake_up(&exynos_crtc->pending_flip_queue);
}
spin_unlock_irqrestore(&dev->event_lock, flags);