[Intel-gfx] [PATCH] drm/i915: Support 30 bit depth modes

[Kristian Høgsberg]

Signed-off-by: Kristian Høgsberg <krh at redhat.com>
---

I have a 30 bit display here and wondered what it looked like.
It's pretty.

 drivers/gpu/drm/i915/i915_reg.h      |    1 +
 drivers/gpu/drm/i915/intel_display.c |    5 ++++-
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 2955083..7fdf39a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1722,6 +1722,7 @@
 #define   DISPPLANE_16BPP			(0x5<<26)
 #define   DISPPLANE_32BPP_NO_ALPHA		(0x6<<26)
 #define   DISPPLANE_32BPP			(0x7<<26)
+#define   DISPPLANE_32BPP_30BIT_NO_ALPHA	(0xa<<26)
 #define   DISPPLANE_STEREO_ENABLE		(1<<25)
 #define   DISPPLANE_STEREO_DISABLE		0
 #define   DISPPLANE_SEL_PIPE_MASK		(1<<24)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 748ed50..2927f52 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -993,7 +993,10 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 		break;
 	case 24:
 	case 32:
-		dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
+		if (crtc->fb->depth == 30)
+			dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
+		else 
+			dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
 		break;
 	default:
 		DRM_ERROR("Unknown color depth\n");
-- 
1.6.5.rc2