From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
We don't currently have any use for the sprite gamma on ivb-bdw.
Let's disable it. We already do that on skl+.
On pre-ivb there is no way to disable the sprite gamma, and it
only affects YCbCr pixel formats, whereas on ivb+ it also
affects RGB formats.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 2 +-
drivers/gpu/drm/i915/intel_sprite.c | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 07e3f861a92e..1c3d7aa1a52b 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6448,7 +6448,7 @@ enum {
#define SPRITE_YUV_ORDER_VYUY (3 << 16)
#define SPRITE_ROTATE_180 (1 << 15)
#define SPRITE_TRICKLE_FEED_DISABLE (1 << 14)
-#define SPRITE_INT_GAMMA_ENABLE (1 << 13)
+#define SPRITE_INT_GAMMA_DISABLE (1 << 13)
#define SPRITE_TILED (1 << 10)
#define SPRITE_DEST_KEY (1 << 2)
#define _SPRA_LINOFF 0x70284
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index c180815faabd..446df1f0ce85 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1013,6 +1013,8 @@ static u32 ivb_sprite_ctl(const struct intel_crtc_state *crtc_state,
return 0;
}
+ sprctl |= SPRITE_INT_GAMMA_DISABLE;
+
if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
sprctl |= SPRITE_YUV_TO_RGB_CSC_FORMAT_BT709;
--
2.21.0
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