[Intel-gfx] [PATCH 2/6] drm/i915: Disable sprite gamma on ivb-bdw

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

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.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_sprite.c | 2 ++
 drivers/gpu/drm/i915/i915_reg.h             | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index 004b52027ae8..c7314617424a 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/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;
 
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c814cc1b3ae5..9aa55c0d737b 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6465,7 +6465,7 @@ 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
-- 
2.21.0