From 6c8b66ed0aaf888bfa2545796bf769c1c4593d58 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Tue, 3 Nov 2015 12:02:17 +0100 Subject: [PATCH] drm/imx: notify DRM core about CRTC vblank state Make sure the DRM core is aware that there will be no vblank interrupts incoming if the CRTC is disabled. That way the core will reject any attempts from userspace to wait on a vblank event on a disabled CRTC. Signed-off-by: Lucas Stach Signed-off-by: Philipp Zabel --- drivers/gpu/drm/imx/ipuv3-crtc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c index 30a57185bdb4..287226311413 100644 --- a/drivers/gpu/drm/imx/ipuv3-crtc.c +++ b/drivers/gpu/drm/imx/ipuv3-crtc.c @@ -64,6 +64,7 @@ static void ipu_fb_enable(struct ipu_crtc *ipu_crtc) /* Start DC channel and DI after IDMAC */ ipu_dc_enable_channel(ipu_crtc->dc); ipu_di_enable(ipu_crtc->di); + drm_crtc_vblank_on(&ipu_crtc->base); ipu_crtc->enabled = 1; } @@ -80,6 +81,7 @@ static void ipu_fb_disable(struct ipu_crtc *ipu_crtc) ipu_di_disable(ipu_crtc->di); ipu_plane_disable(ipu_crtc->plane[0]); ipu_dc_disable(ipu); + drm_crtc_vblank_off(&ipu_crtc->base); ipu_crtc->enabled = 0; } -- 2.45.2