drm/nv40/fb: use an actual compressed zeta format
SPLIT is apparently just that, and only splits Z and S components.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/fb/nv40.c
index fe7e298..65e131b 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/fb/nv40.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/fb/nv40.c
@@ -54,7 +54,7 @@
u32 tags = round_up(tiles / pfb->ram.parts, 0x100);
if ( (flags & 2) &&
!nouveau_mm_head(&pfb->tags, 1, tags, tags, 1, &tile->tag)) {
- tile->zcomp = 0x24000000; /* Z24S8_SPLIT */
+ tile->zcomp = 0x28000000; /* Z24S8_SPLIT_GRAD */
tile->zcomp |= ((tile->tag->offset ) >> 8);
tile->zcomp |= ((tile->tag->offset + tags - 1) >> 8) << 13;
#ifdef __BIG_ENDIAN