diff options
Diffstat (limited to 'drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c index 20adb9d2fa17..ab42a4999a55 100644 --- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c +++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c @@ -271,6 +271,9 @@ static void shmob_drm_crtc_start(struct shmob_drm_crtc *scrtc) shmob_drm_crtc_start_stop(scrtc, true); + /* Turn vertical blank interrupt reporting back on. */ + drm_crtc_vblank_on(crtc); + scrtc->started = true; } @@ -283,10 +286,12 @@ static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc) return; /* - * Wait for page flip completion before stopping the CRTC as userspace + * Disable vertical blank interrupt reporting. We first need to wait + * for page flip completion before stopping the CRTC as userspace * expects page flips to eventually complete. */ shmob_drm_crtc_wait_page_flip(scrtc); + drm_crtc_vblank_off(crtc); /* Stop the LCDC. */ shmob_drm_crtc_start_stop(scrtc, false); @@ -519,6 +524,9 @@ int shmob_drm_crtc_create(struct shmob_drm_device *sdev) drm_crtc_helper_add(crtc, &crtc_helper_funcs); + /* Start with vertical blank interrupt reporting disabled. */ + drm_crtc_vblank_off(crtc); + return 0; } |