drm/i915: clean up plane bpp confusion
- There is no 16bpc linear color format in our hw. gen4+ has a 16 bpc
float layout, but we don't really support it.
- 10bpc is a gen4+ feature, fix up the support for it.
- Update_plane should never see a wrong fb bpp value, BUG in the
corresponding cases.
v2: Rebase on top of Ville's plane pixel layout changes.
v3: Actually drop the old gen4 check for 10bpc planes, spotted
by Ville Syrjälä.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e95c469..70c22b1 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2113,8 +2113,7 @@
dspcntr |= DISPPLANE_RGBX101010;
break;
default:
- DRM_ERROR("Unknown pixel format 0x%08x\n", fb->pixel_format);
- return -EINVAL;
+ BUG();
}
if (INTEL_INFO(dev)->gen >= 4) {
@@ -2207,8 +2206,7 @@
dspcntr |= DISPPLANE_RGBX101010;
break;
default:
- DRM_ERROR("Unknown pixel format 0x%08x\n", fb->pixel_format);
- return -EINVAL;
+ BUG();
}
if (obj->tiling_mode != I915_TILING_NONE)
@@ -7400,21 +7398,19 @@
bpp = 8*3;
break;
case 30:
+ if (INTEL_INFO(dev)->gen < 4) {
+ DRM_DEBUG_KMS("10 bpc not supported on gen2/3\n");
+ return -EINVAL;
+ }
+
bpp = 10*3;
break;
- case 48:
- bpp = 12*3;
- break;
+ /* TODO: gen4+ supports 16 bpc floating point, too. */
default:
DRM_DEBUG_KMS("unsupported depth\n");
return -EINVAL;
}
- if (fb->depth > 24 && !HAS_PCH_SPLIT(dev)) {
- DRM_DEBUG_KMS("high depth not supported on gmch platforms\n");
- return -EINVAL;
- }
-
pipe_config->pipe_bpp = bpp;
/* Clamp display bpp to EDID value */