Hi Andrzej,
On 10/01/2014 05:14 PM, Andrzej Hajda wrote:
The patch disables vblanks during dpms off only if pagefilp has not been finished. It also replaces drm_vblank_off with drm_crtc_vblank_put. It fixes issue with page_flip ioctl not being able to acquire vblank counter.
This problem isn't related with pageflip, it just causes from 7ffd7a68511c710b84db3548a1997fd2625f580a commit (drm: Always reject drm_vblank_get() after drm_vblank_off()).
We need to use drm_vblank_on() as a counterpart to drm_vblank_off() after the commit .
How about below patch?
From 6de01473746af225c688ee430123001d57d9af2a Mon Sep 17 00:00:00 2001
From: Joonyoung Shim jy0922.shim@samsung.com Date: Thu, 2 Oct 2014 17:48:27 +0900 Subject: [PATCH] drm/exynos: use drm_vblank_on()
We need to use drm_vblank_on() as a counterpart to drm_vblank_off() after the commit 7ffd7a68511c ("drm: Always reject drm_vblank_get() after drm_vblank_off()"). If not, drm_vblank_get() will be failed always after drm_vblank_off().
Signed-off-by: Joonyoung Shim jy0922.shim@samsung.com --- drivers/gpu/drm/exynos/exynos_drm_crtc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c index 8e38e9f..dfa209a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c @@ -71,7 +71,6 @@ static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode) !atomic_read(&exynos_crtc->pending_flip), HZ/20)) atomic_set(&exynos_crtc->pending_flip, 0); - drm_vblank_off(crtc->dev, exynos_crtc->pipe); }
if (manager->ops->dpms) @@ -90,6 +89,7 @@ static void exynos_drm_crtc_commit(struct drm_crtc *crtc) struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); struct exynos_drm_manager *manager = exynos_crtc->manager;
+ drm_vblank_on(crtc->dev, exynos_crtc->pipe); exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
exynos_plane_commit(crtc->primary); @@ -177,10 +177,12 @@ static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
static void exynos_drm_crtc_disable(struct drm_crtc *crtc) { + struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc); struct drm_plane *plane; int ret;
exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + drm_vblank_off(crtc->dev, exynos_crtc->pipe);
drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) { if (plane->crtc != crtc)