[PATCH 04/10] drm/i915/color: Add support for 1D LUT in SDR planes

[Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>]

Extend the SDR plane color pipeline to include pre- and post-CSC
1D LUT blocks.

SDR planes use a smaller LUT size than HDR planes and therefore
initialize the 1D LUT colorops with the appropriate hardware
capacity.

Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
---
 drivers/gpu/drm/i915/display/intel_color_pipeline.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_color_pipeline.c b/drivers/gpu/drm/i915/display/intel_color_pipeline.c
index f368a896d2fc..47b3bcec7b18 100644
--- a/drivers/gpu/drm/i915/display/intel_color_pipeline.c
+++ b/drivers/gpu/drm/i915/display/intel_color_pipeline.c
@@ -15,6 +15,7 @@
 #define MAX_COLOROP 4
 #define PLANE_DEGAMMA_SIZE 128
 #define PLANE_GAMMA_SIZE 32
+#define PLANE_DEGAMMA_SIZE_SDR 32
 
 static const struct drm_colorop_funcs intel_colorop_funcs = {
 	.destroy = intel_colorop_destroy,
@@ -44,7 +45,9 @@ static const enum intel_color_block hdr_plane_pipeline[] = {
 };
 
 static const enum intel_color_block sdr_plane_pipeline[] = {
+	INTEL_PLANE_CB_PRE_CSC_LUT,
 	INTEL_PLANE_CB_CSC_FF,
+	INTEL_PLANE_CB_POST_CSC_LUT,
 };
 
 static const u64 intel_plane_supported_csc_ff =
@@ -67,8 +70,10 @@ struct intel_colorop *intel_color_pipeline_plane_add_colorop(struct drm_plane *p
 							     enum intel_color_block id)
 {
 	struct drm_device *dev = plane->dev;
+	struct intel_display *display = to_intel_display(dev);
 	struct intel_colorop *colorop;
 	int ret;
+	bool is_hdr = icl_is_hdr_plane(display, to_intel_plane(plane)->id);
 
 	colorop = intel_colorop_create(id);
 
@@ -80,7 +85,9 @@ struct intel_colorop *intel_color_pipeline_plane_add_colorop(struct drm_plane *p
 		ret = drm_plane_colorop_curve_1d_lut_init(dev,
 							  &colorop->base, plane,
 							  &intel_colorop_funcs,
-							  PLANE_DEGAMMA_SIZE,
+							  is_hdr ?
+							  PLANE_DEGAMMA_SIZE :
+							  PLANE_DEGAMMA_SIZE_SDR,
 							  DRM_COLOROP_LUT1D_INTERPOLATION_LINEAR,
 							  DRM_COLOROP_FLAG_ALLOW_BYPASS);
 		break;
-- 
2.25.1