drm/amd/display: Output Transfer Function Regamma Refactor

- Create translation function to translate logical format to hw format
- Refactor to use transfer function in dc instead of input gamma
Signed-off-by: Amy Zhang <Amy.Zhang@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c

@@ -246,6 +246,15 @@ struct fixed31_32 dal_fixed31_32_add(
 	return res;
 }
 
+struct fixed31_32 dal_fixed31_32_add_int(
+	struct fixed31_32 arg1,
+	int32_t arg2)
+{
+	return dal_fixed31_32_add(
+		arg1,
+		dal_fixed31_32_from_int(arg2));
+}
+
 struct fixed31_32 dal_fixed31_32_sub_int(
 	struct fixed31_32 arg1,
 	int32_t arg2)

drivers/gpu/drm/amd/display/dc/calcs/Makefile

@@ -3,7 +3,7 @@
 # It calculates Bandwidth and Watermarks values for HW programming
 #
 
-BW_CALCS = bandwidth_calcs.o bw_fixed.o gamma_calcs.o
+BW_CALCS = bandwidth_calcs.o bw_fixed.o
 
 AMD_DAL_BW_CALCS = $(addprefix $(AMDDALPATH)/dc/calcs/,$(BW_CALCS))
 

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -1519,23 +1519,23 @@ void dc_update_surfaces_for_stream(struct dc *dc, struct dc_surface_update *upda
 			if (dc->debug.disable_color_module)
 				continue;  /* skip below color updates */
 
-			if (updates[i].hdr_static_metadata) {
-				resource_build_info_frame(pipe_ctx);
-				core_dc->hwss.update_info_frame(pipe_ctx);
-			}
 			if (is_new_pipe_surface[j] ||
 					updates[i].in_transfer_func)
 				core_dc->hwss.set_input_transfer_func(
 						pipe_ctx, pipe_ctx->surface);
 
 			if (is_new_pipe_surface[j] ||
-					updates[i].gamma ||
 					updates[i].out_transfer_func)
 				core_dc->hwss.set_output_transfer_func(
 						pipe_ctx,
 						pipe_ctx->surface,
 						pipe_ctx->stream);
 
+			if (updates[i].hdr_static_metadata) {
+				resource_build_info_frame(pipe_ctx);
+				core_dc->hwss.update_info_frame(pipe_ctx);
+			}
+
 		}
 		if (apply_ctx) {
 			core_dc->hwss.apply_ctx_for_surface(core_dc, surface, context);

drivers/gpu/drm/amd/display/dc/dc.h

@@ -213,11 +213,14 @@ enum dc_transfer_func_type {
 };
 
 struct dc_transfer_func_distributed_points {
-	uint16_t red[TRANSFER_FUNC_POINTS];
-	uint16_t green[TRANSFER_FUNC_POINTS];
-	uint16_t blue[TRANSFER_FUNC_POINTS];
+	struct fixed31_32 red[TRANSFER_FUNC_POINTS];
+	struct fixed31_32 green[TRANSFER_FUNC_POINTS];
+	struct fixed31_32 blue[TRANSFER_FUNC_POINTS];
+
 	uint16_t end_exponent;
-	uint16_t x_point_at_y1;
+	uint16_t x_point_at_y1_red;
+	uint16_t x_point_at_y1_green;
+	uint16_t x_point_at_y1_blue;
 };
 
 enum dc_transfer_func_predefined {

drivers/gpu/drm/amd/display/dc/inc/gamma_calcs.h

-/*
- * gamma_calcs.h
- *
- *  Created on: Feb 9, 2016
- *      Author: yonsun
- */
-
-#ifndef DRIVERS_GPU_DRM_AMD_DC_DEV_DC_INC_GAMMA_CALCS_H_
-#define DRIVERS_GPU_DRM_AMD_DC_DEV_DC_INC_GAMMA_CALCS_H_
-
-#include "opp.h"
-#include "core_types.h"
-#include "dc.h"
-
-bool calculate_regamma_params(struct pwl_params *params,
-		const struct core_gamma *ramp,
-		const struct core_surface *surface,
-		const struct core_stream *stream);
-
-#endif /* DRIVERS_GPU_DRM_AMD_DC_DEV_DC_INC_GAMMA_CALCS_H_ */

drivers/gpu/drm/amd/display/dc/inc/hw/opp.h

@@ -138,9 +138,7 @@ struct custom_float_value {
 
 struct hw_x_point {
 	uint32_t custom_float_x;
-	uint32_t custom_float_x_adjusted;
 	struct fixed31_32 x;
-	struct fixed31_32 adjusted_x;
 	struct fixed31_32 regamma_y_red;
 	struct fixed31_32 regamma_y_green;
 	struct fixed31_32 regamma_y_blue;

drivers/gpu/drm/amd/display/include/fixed31_32.h

@@ -190,6 +190,14 @@ struct fixed31_32 dal_fixed31_32_add(
 	struct fixed31_32 arg1,
 	struct fixed31_32 arg2);
 
+/*
+ * @brief
+ * result = arg1 + arg2
+ */
+struct fixed31_32 dal_fixed31_32_add_int(
+	struct fixed31_32 arg1,
+	int32_t arg2);
+
 /*
  * @brief
  * result = arg1 - arg2