On Wed, May 27, 2020 at 11:47:56AM +0200, Daniel Vetter wrote: > mxsfb has vblank support, is atomic, but doesn't call > drm_crtc_vblank_on/off as it should. Not good. > > With my next patch to add the drm_crtc_vblank_reset to helpers this > means not even the very first crtc enabling will vblanks work anymore, > since they'll just stay off forever. > > Since mxsfb doesn't have any vblank waits of its own in the > enable/disable flow, nor an enable/disable_vblank callback we can do > the on/off as the first respectively last operation, and it should all > work. > > Signed-off-by: Daniel Vetter <daniel.vet...@intel.com> > Cc: Marek Vasut <ma...@denx.de> > Cc: Stefan Agner <ste...@agner.ch> > Cc: Shawn Guo <shawn...@kernel.org> > Cc: Sascha Hauer <s.ha...@pengutronix.de> > Cc: Pengutronix Kernel Team <ker...@pengutronix.de> > Cc: Fabio Estevam <feste...@gmail.com> > Cc: NXP Linux Team <linux-...@nxp.com> > Cc: linux-arm-ker...@lists.infradead.org
Ping for some ack/review on this one here, it's holding up the subsystem wide fix in patch 2. Thanks, Daniel > --- > drivers/gpu/drm/mxsfb/mxsfb_drv.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c > b/drivers/gpu/drm/mxsfb/mxsfb_drv.c > index 497cf443a9af..1891cd6deb2f 100644 > --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c > +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c > @@ -124,6 +124,7 @@ static void mxsfb_pipe_enable(struct > drm_simple_display_pipe *pipe, > drm_panel_prepare(mxsfb->panel); > mxsfb_crtc_enable(mxsfb); > drm_panel_enable(mxsfb->panel); > + drm_crtc_vblank_on(&pipe->crtc); > } > > static void mxsfb_pipe_disable(struct drm_simple_display_pipe *pipe) > @@ -133,6 +134,7 @@ static void mxsfb_pipe_disable(struct > drm_simple_display_pipe *pipe) > struct drm_crtc *crtc = &pipe->crtc; > struct drm_pending_vblank_event *event; > > + drm_crtc_vblank_off(&pipe->crtc); > drm_panel_disable(mxsfb->panel); > mxsfb_crtc_disable(mxsfb); > drm_panel_unprepare(mxsfb->panel); > -- > 2.26.2 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
