diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2013-08-24 02:17:03 +0200 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2016-02-20 02:58:55 +0200 |
| commit | 2af0394409faec95e80d6061a8a9fe95565be358 (patch) | |
| tree | d2eae3c1bbacd0244e7f35012156f0080525f28f /drivers/gpu/drm/rcar-du/rcar_du_crtc.c | |
| parent | 34a04f2b7baaa980fcb9eff9cbfb28a947c67f74 (diff) | |
drm: rcar-du: Restart the DU group when a plane source changes
Plane sources are configured by the VSPS bit in the PnDDCR4 register.
Although the datasheet states that the bit is updated during vertical
blanking, it seems that updates only occur when the DU group is held in
reset through the DSYSR.DRES bit. Restart the group if the source
changes.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c index b87b8ffb898b..e2560aa26ef4 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -272,6 +272,10 @@ static void rcar_du_crtc_update_planes(struct rcar_du_crtc *rcrtc) rcar_du_group_restart(rcrtc->group); } + /* Restart the group if plane sources have changed. */ + if (rcrtc->group->need_restart) + rcar_du_group_restart(rcrtc->group); + mutex_unlock(&rcrtc->group->lock); rcar_du_group_write(rcrtc->group, rcrtc->index % 2 ? DS2PR : DS1PR, |