drm/nv50/disp: fix gamma with page flipping overlay turned on
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 74a3f68..08da478 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -409,7 +409,7 @@
struct nouveau_channel *evo = dispc->sync;
int ret;
- ret = RING_SPACE(evo, 24);
+ ret = RING_SPACE(evo, chan ? 25 : 27);
if (unlikely(ret))
return ret;
@@ -458,8 +458,19 @@
/* queue the flip on the crtc's "display sync" channel */
BEGIN_RING(evo, 0, 0x0100, 1);
OUT_RING (evo, 0xfffe0000);
- BEGIN_RING(evo, 0, 0x0084, 5);
- OUT_RING (evo, chan ? 0x00000100 : 0x00000010);
+ if (chan) {
+ BEGIN_RING(evo, 0, 0x0084, 1);
+ OUT_RING (evo, 0x00000100);
+ } else {
+ BEGIN_RING(evo, 0, 0x0084, 1);
+ OUT_RING (evo, 0x00000010);
+ /* allows gamma somehow, PDISP will bitch at you if
+ * you don't wait for vblank before changing this..
+ */
+ BEGIN_RING(evo, 0, 0x00e0, 1);
+ OUT_RING (evo, 0x40000000);
+ }
+ BEGIN_RING(evo, 0, 0x0088, 4);
OUT_RING (evo, dispc->sem.offset);
OUT_RING (evo, 0xf00d0000 | dispc->sem.value);
OUT_RING (evo, 0x74b1e000);