drm/amd/display: seperate dpp_cm_helper functions into new file

Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/Makefile

@@ -4,7 +4,7 @@
 DCN10 = dcn10_resource.o dcn10_ipp.o dcn10_hw_sequencer.o \
 		dcn10_dpp.o dcn10_opp.o dcn10_timing_generator.o \
 		dcn10_mem_input.o dcn10_mpc.o dcn10_dwb.o \
-		dcn10_dpp_dscl.o dcn10_dpp_cm.o
+		dcn10_dpp_dscl.o dcn10_dpp_cm.o dcn10_dpp_cm_helper.o
 
 AMD_DAL_DCN10 = $(addprefix $(AMDDALPATH)/dc/dcn10/,$(DCN10))
 

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.h

@@ -1262,6 +1262,8 @@ struct dcn10_dpp {
 	bool is_write_to_ram_a_safe;
 };
 
+
+
 enum dcn10_input_csc_select {
 	INPUT_CSC_SELECT_BYPASS = 0,
 	INPUT_CSC_SELECT_ICSC,

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_cm.c

@@ -29,6 +29,7 @@
 
 #include "reg_helper.h"
 #include "dcn10_dpp.h"
+#include "dcn10_dpp_cm_helper.h"
 #include "basics/conversion.h"
 
 #define NUM_PHASES    64
@@ -116,37 +117,7 @@ static const struct dcn10_input_csc_matrix dcn10_input_csc_matrix[] = {
 						0x2568, 0x43ee, 0xdbb2} }
 };
 
-static void dpp_cm_program_color_registers(
-		struct dcn10_dpp *xfm,
-		const uint16_t *regval,
-		uint32_t cm_reg_start,
-		uint32_t cm_reg_end)
-{
-	uint32_t reg_region_cur;
-	unsigned int i = 0;
-
-#undef REG
-#define REG(reg) reg
-
-	for (reg_region_cur = cm_reg_start;
-			reg_region_cur <= cm_reg_end;
-			reg_region_cur++) {
-
-		const uint16_t *regval0 = &(regval[2 * i]);
-		const uint16_t *regval1 = &(regval[(2 * i) + 1]);
 
-		REG_SET_2(reg_region_cur, 0,
-				CM_GAMUT_REMAP_C11, *regval0,
-				CM_GAMUT_REMAP_C12, *regval1);
-
-		i++;
-	}
-
-#undef REG
-#define REG(reg)\
-	xfm->tf_regs->reg
-
-}
 
 static void program_gamut_remap(
 		struct dcn10_dpp *xfm,
@@ -154,6 +125,7 @@ static void program_gamut_remap(
 		enum gamut_remap_select select)
 {
 	 uint16_t selection = 0;
+	struct color_matrices_reg gam_regs;
 
 	if (regval == NULL || select == GAMUT_REMAP_BYPASS) {
 		REG_SET(CM_GAMUT_REMAP_CONTROL, 0,
@@ -174,30 +146,40 @@ static void program_gamut_remap(
 		break;
 	}
 
+	gam_regs.shifts.csc_c11 = xfm->tf_shift->CM_GAMUT_REMAP_C11;
+	gam_regs.masks.csc_c11  = xfm->tf_mask->CM_GAMUT_REMAP_C11;
+	gam_regs.shifts.csc_c12 = xfm->tf_shift->CM_GAMUT_REMAP_C12;
+	gam_regs.masks.csc_c12 = xfm->tf_mask->CM_GAMUT_REMAP_C12;
+
 
 	if (select == GAMUT_REMAP_COEFF) {
+		gam_regs.csc_c11_c12 = REG(CM_GAMUT_REMAP_C11_C12);
+		gam_regs.csc_c33_c34 = REG(CM_GAMUT_REMAP_C33_C34);
 
-		dpp_cm_program_color_registers(
-				xfm,
+		cm_helper_program_color_matrices(
+				xfm->base.ctx,
 				regval,
-				REG(CM_GAMUT_REMAP_C11_C12),
-				REG(CM_GAMUT_REMAP_C33_C34));
+				&gam_regs);
 
 	} else  if (select == GAMUT_REMAP_COMA_COEFF) {
 
-		dpp_cm_program_color_registers(
-				xfm,
+		gam_regs.csc_c11_c12 = REG(CM_COMA_C11_C12);
+		gam_regs.csc_c33_c34 = REG(CM_COMA_C33_C34);
+
+		cm_helper_program_color_matrices(
+				xfm->base.ctx,
 				regval,
-				REG(CM_COMA_C11_C12),
-				REG(CM_COMA_C33_C34));
+				&gam_regs);
 
 	} else {
 
-		dpp_cm_program_color_registers(
-				xfm,
+		gam_regs.csc_c11_c12 = REG(CM_COMB_C11_C12);
+		gam_regs.csc_c33_c34 = REG(CM_COMB_C33_C34);
+
+		cm_helper_program_color_matrices(
+				xfm->base.ctx,
 				regval,
-				REG(CM_COMB_C11_C12),
-				REG(CM_COMB_C33_C34));
+				&gam_regs);
 	}
 
 	REG_SET(
@@ -278,11 +260,39 @@ void dcn10_dpp_cm_set_output_csc_default(
 
 }
 
+static void dcn10_dpp_cm_get_reg_field(
+		struct dcn10_dpp *xfm,
+		struct xfer_func_reg *reg)
+{
+	reg->shifts.exp_region0_lut_offset = xfm->tf_shift->CM_RGAM_RAMA_EXP_REGION0_LUT_OFFSET;
+	reg->masks.exp_region0_lut_offset = xfm->tf_mask->CM_RGAM_RAMA_EXP_REGION0_LUT_OFFSET;
+	reg->shifts.exp_region0_num_segments = xfm->tf_shift->CM_RGAM_RAMA_EXP_REGION0_NUM_SEGMENTS;
+	reg->masks.exp_region0_num_segments = xfm->tf_mask->CM_RGAM_RAMA_EXP_REGION0_NUM_SEGMENTS;
+	reg->shifts.exp_region1_lut_offset = xfm->tf_shift->CM_RGAM_RAMA_EXP_REGION1_LUT_OFFSET;
+	reg->masks.exp_region1_lut_offset = xfm->tf_mask->CM_RGAM_RAMA_EXP_REGION1_LUT_OFFSET;
+	reg->shifts.exp_region1_num_segments = xfm->tf_shift->CM_RGAM_RAMA_EXP_REGION1_NUM_SEGMENTS;
+	reg->masks.exp_region1_num_segments = xfm->tf_mask->CM_RGAM_RAMA_EXP_REGION1_NUM_SEGMENTS;
+
+	reg->shifts.field_region_end = xfm->tf_shift->CM_RGAM_RAMB_EXP_REGION_END_B;
+	reg->masks.field_region_end = xfm->tf_mask->CM_RGAM_RAMB_EXP_REGION_END_B;
+	reg->shifts.field_region_end_slope = xfm->tf_shift->CM_RGAM_RAMB_EXP_REGION_END_SLOPE_B;
+	reg->masks.field_region_end_slope = xfm->tf_mask->CM_RGAM_RAMB_EXP_REGION_END_SLOPE_B;
+	reg->shifts.field_region_end_base = xfm->tf_shift->CM_RGAM_RAMB_EXP_REGION_END_BASE_B;
+	reg->masks.field_region_end_base = xfm->tf_mask->CM_RGAM_RAMB_EXP_REGION_END_BASE_B;
+	reg->shifts.field_region_linear_slope = xfm->tf_shift->CM_RGAM_RAMB_EXP_REGION_LINEAR_SLOPE_B;
+	reg->masks.field_region_linear_slope = xfm->tf_mask->CM_RGAM_RAMB_EXP_REGION_LINEAR_SLOPE_B;
+	reg->shifts.exp_region_start = xfm->tf_shift->CM_RGAM_RAMB_EXP_REGION_START_B;
+	reg->masks.exp_region_start = xfm->tf_mask->CM_RGAM_RAMB_EXP_REGION_START_B;
+	reg->shifts.exp_resion_start_segment = xfm->tf_shift->CM_RGAM_RAMB_EXP_REGION_START_SEGMENT_B;
+	reg->masks.exp_resion_start_segment = xfm->tf_mask->CM_RGAM_RAMB_EXP_REGION_START_SEGMENT_B;
+}
+
 static void dcn10_dpp_cm_program_color_matrix(
 		struct dcn10_dpp *xfm,
 		const struct out_csc_color_matrix *tbl_entry)
 {
 	uint32_t mode;
+	struct color_matrices_reg gam_regs;
 
 	REG_GET(CM_OCSC_CONTROL, CM_OCSC_MODE, &mode);
 
@@ -291,21 +301,30 @@ static void dcn10_dpp_cm_program_color_matrix(
 		return;
 	}
 
+	gam_regs.shifts.csc_c11 = xfm->tf_shift->CM_OCSC_C11;
+	gam_regs.masks.csc_c11  = xfm->tf_mask->CM_OCSC_C11;
+	gam_regs.shifts.csc_c12 = xfm->tf_shift->CM_OCSC_C12;
+	gam_regs.masks.csc_c12 = xfm->tf_mask->CM_OCSC_C12;
+
 	if (mode == 4) {
 
-		dpp_cm_program_color_registers(
-				xfm,
+		gam_regs.csc_c11_c12 = REG(CM_OCSC_C11_C12);
+		gam_regs.csc_c33_c34 = REG(CM_OCSC_C33_C34);
+
+		cm_helper_program_color_matrices(
+				xfm->base.ctx,
 				tbl_entry->regval,
-				REG(CM_OCSC_C11_C12),
-				REG(CM_OCSC_C33_C34));
+				&gam_regs);
 
 	} else {
 
-		dpp_cm_program_color_registers(
-				xfm,
+		gam_regs.csc_c11_c12 = REG(CM_COMB_C11_C12);
+		gam_regs.csc_c33_c34 = REG(CM_COMB_C33_C34);
+
+		cm_helper_program_color_matrices(
+				xfm->base.ctx,
 				tbl_entry->regval,
-				REG(CM_COMB_C11_C12),
-				REG(CM_COMB_C33_C34));
+				&gam_regs);
 	}
 }
 
@@ -394,101 +413,15 @@ void dcn10_dpp_cm_configure_regamma_lut(
 	REG_SET(CM_RGAM_LUT_INDEX, 0, CM_RGAM_LUT_INDEX, 0);
 }
 
-struct cm_gam_ram_reg {
-	uint32_t start_cntl_b;
-	uint32_t start_cntl_g;
-	uint32_t start_cntl_r;
-	uint32_t start_slope_cntl_b;
-	uint32_t start_slope_cntl_g;
-	uint32_t start_slope_cntl_r;
-	uint32_t start_end_cntl1_b;
-	uint32_t start_end_cntl2_b;
-	uint32_t start_end_cntl1_g;
-	uint32_t start_end_cntl2_g;
-	uint32_t start_end_cntl1_r;
-	uint32_t start_end_cntl2_r;
-	uint32_t region_start;
-	uint32_t region_end;
-};
-
-static void dpp_cm_program_region_lut(
-		struct transform *xfm_base,
-		const struct pwl_params *params,
-		const struct cm_gam_ram_reg *reg)
-{
-	struct dcn10_dpp *xfm = TO_DCN10_DPP(xfm_base);
-	uint32_t reg_region_cur;
-	unsigned int i = 0;
-
-#undef REG
-#define REG(reg) reg
-
-	REG_SET_2(reg->start_cntl_b, 0,
-		CM_RGAM_RAMA_EXP_REGION_START_B, params->arr_points[0].custom_float_x,
-		CM_RGAM_RAMA_EXP_REGION_START_SEGMENT_B, 0);
-	REG_SET_2(reg->start_cntl_g, 0,
-		CM_RGAM_RAMA_EXP_REGION_START_G, params->arr_points[0].custom_float_x,
-		CM_RGAM_RAMA_EXP_REGION_START_SEGMENT_G, 0);
-	REG_SET_2(reg->start_cntl_r, 0,
-		CM_RGAM_RAMA_EXP_REGION_START_R, params->arr_points[0].custom_float_x,
-		CM_RGAM_RAMA_EXP_REGION_START_SEGMENT_R, 0);
-
-	REG_SET(reg->start_slope_cntl_b, 0,
-		CM_RGAM_RAMA_EXP_REGION_LINEAR_SLOPE_B, params->arr_points[0].custom_float_slope);
-	REG_SET(reg->start_slope_cntl_g, 0,
-		CM_RGAM_RAMA_EXP_REGION_LINEAR_SLOPE_G, params->arr_points[0].custom_float_slope);
-	REG_SET(reg->start_slope_cntl_r, 0,
-		CM_RGAM_RAMA_EXP_REGION_LINEAR_SLOPE_R, params->arr_points[0].custom_float_slope);
-
-	REG_SET(reg->start_end_cntl1_b, 0,
-		CM_RGAM_RAMA_EXP_REGION_END_B, params->arr_points[1].custom_float_x);
-	REG_SET_2(reg->start_end_cntl2_b, 0,
-		CM_RGAM_RAMA_EXP_REGION_END_SLOPE_B, params->arr_points[1].custom_float_slope,
-		CM_RGAM_RAMA_EXP_REGION_END_BASE_B, params->arr_points[1].custom_float_y);
-
-	REG_SET(reg->start_end_cntl1_g, 0,
-		CM_RGAM_RAMA_EXP_REGION_END_G, params->arr_points[1].custom_float_x);
-	REG_SET_2(reg->start_end_cntl2_g, 0,
-		CM_RGAM_RAMA_EXP_REGION_END_SLOPE_G, params->arr_points[1].custom_float_slope,
-		CM_RGAM_RAMA_EXP_REGION_END_BASE_G, params->arr_points[1].custom_float_y);
-
-	REG_SET(reg->start_end_cntl1_r, 0,
-		CM_RGAM_RAMA_EXP_REGION_END_R, params->arr_points[1].custom_float_x);
-	REG_SET_2(reg->start_end_cntl2_r, 0,
-		CM_RGAM_RAMA_EXP_REGION_END_SLOPE_R, params->arr_points[1].custom_float_slope,
-		CM_RGAM_RAMA_EXP_REGION_END_BASE_R, params->arr_points[1].custom_float_y);
-
-	for (reg_region_cur = reg->region_start;
-			reg_region_cur <= reg->region_end;
-			reg_region_cur++) {
-
-		const struct gamma_curve *curve0 = &(params->arr_curve_points[2 * i]);
-		const struct gamma_curve *curve1 = &(params->arr_curve_points[(2 * i) + 1]);
-
-		REG_SET_4(reg_region_cur, 0,
-			CM_RGAM_RAMA_EXP_REGION0_LUT_OFFSET, curve0->offset,
-			CM_RGAM_RAMA_EXP_REGION0_NUM_SEGMENTS, curve0->segments_num,
-			CM_RGAM_RAMA_EXP_REGION1_LUT_OFFSET, curve1->offset,
-			CM_RGAM_RAMA_EXP_REGION1_NUM_SEGMENTS, curve1->segments_num);
-
-		i++;
-	}
-
-#undef REG
-#define REG(reg)\
-	xfm->tf_regs->reg
-
-}
-
-
-
 /*program re gamma RAM A*/
 void dcn10_dpp_cm_program_regamma_luta_settings(
 		struct transform *xfm_base,
 		const struct pwl_params *params)
 {
 	struct dcn10_dpp *xfm = TO_DCN10_DPP(xfm_base);
-	struct cm_gam_ram_reg gam_regs;
+	struct xfer_func_reg gam_regs;
+
+	dcn10_dpp_cm_get_reg_field(xfm, &gam_regs);
 
 	gam_regs.start_cntl_b = REG(CM_RGAM_RAMA_START_CNTL_B);
 	gam_regs.start_cntl_g = REG(CM_RGAM_RAMA_START_CNTL_G);
@@ -505,7 +438,7 @@ void dcn10_dpp_cm_program_regamma_luta_settings(
 	gam_regs.region_start = REG(CM_RGAM_RAMA_REGION_0_1);
 	gam_regs.region_end = REG(CM_RGAM_RAMA_REGION_32_33);
 
-	dpp_cm_program_region_lut(xfm_base, params, &gam_regs);
+	cm_helper_program_xfer_func(xfm->base.ctx, params, &gam_regs);
 
 }
 
@@ -515,7 +448,9 @@ void dcn10_dpp_cm_program_regamma_lutb_settings(
 		const struct pwl_params *params)
 {
 	struct dcn10_dpp *xfm = TO_DCN10_DPP(xfm_base);
-	struct cm_gam_ram_reg gam_regs;
+	struct xfer_func_reg gam_regs;
+
+	dcn10_dpp_cm_get_reg_field(xfm, &gam_regs);
 
 	gam_regs.start_cntl_b = REG(CM_RGAM_RAMB_START_CNTL_B);
 	gam_regs.start_cntl_g = REG(CM_RGAM_RAMB_START_CNTL_G);
@@ -532,7 +467,7 @@ void dcn10_dpp_cm_program_regamma_lutb_settings(
 	gam_regs.region_start = REG(CM_RGAM_RAMB_REGION_0_1);
 	gam_regs.region_end = REG(CM_RGAM_RAMB_REGION_32_33);
 
-	dpp_cm_program_region_lut(xfm_base, params, &gam_regs);
+	cm_helper_program_xfer_func(xfm->base.ctx, params, &gam_regs);
 }
 
 void ippn10_program_input_csc(
@@ -545,6 +480,7 @@ void ippn10_program_input_csc(
 	int arr_size = sizeof(dcn10_input_csc_matrix)/sizeof(struct dcn10_input_csc_matrix);
 	const uint16_t *regval = NULL;
 	uint32_t selection = 1;
+	struct color_matrices_reg gam_regs;
 
 	if (select == INPUT_CSC_SELECT_BYPASS) {
 		REG_SET(CM_ICSC_CONTROL, 0, CM_ICSC_MODE, 0);
@@ -567,20 +503,30 @@ void ippn10_program_input_csc(
 	REG_SET(CM_ICSC_CONTROL, 0,
 			CM_ICSC_MODE, selection);
 
+	gam_regs.shifts.csc_c11 = xfm->tf_shift->CM_ICSC_C11;
+	gam_regs.masks.csc_c11  = xfm->tf_mask->CM_ICSC_C11;
+	gam_regs.shifts.csc_c12 = xfm->tf_shift->CM_ICSC_C12;
+	gam_regs.masks.csc_c12 = xfm->tf_mask->CM_ICSC_C12;
+
+
 	if (select == INPUT_CSC_SELECT_ICSC) {
 
-		dpp_cm_program_color_registers(
-				xfm,
+		gam_regs.csc_c11_c12 = REG(CM_ICSC_C11_C12);
+		gam_regs.csc_c33_c34 = REG(CM_ICSC_C33_C34);
+
+		cm_helper_program_color_matrices(
+				xfm->base.ctx,
 				regval,
-				REG(CM_ICSC_C11_C12),
-				REG(CM_ICSC_C33_C34));
+				&gam_regs);
 	} else {
 
-		dpp_cm_program_color_registers(
-				xfm,
+		gam_regs.csc_c11_c12 = REG(CM_COMA_C11_C12);
+		gam_regs.csc_c33_c34 = REG(CM_COMA_C33_C34);
+
+		cm_helper_program_color_matrices(
+				xfm->base.ctx,
 				regval,
-				REG(CM_COMA_C11_C12),
-				REG(CM_COMA_C33_C34));
+				&gam_regs);
 	}
 }
 
@@ -590,7 +536,9 @@ void ippn10_program_degamma_lutb_settings(
 		const struct pwl_params *params)
 {
 	struct dcn10_dpp *xfm = TO_DCN10_DPP(xfm_base);
-	struct cm_gam_ram_reg gam_regs;
+	struct xfer_func_reg gam_regs;
+
+	dcn10_dpp_cm_get_reg_field(xfm, &gam_regs);
 
 	gam_regs.start_cntl_b = REG(CM_DGAM_RAMB_START_CNTL_B);
 	gam_regs.start_cntl_g = REG(CM_DGAM_RAMB_START_CNTL_G);
@@ -607,7 +555,8 @@ void ippn10_program_degamma_lutb_settings(
 	gam_regs.region_start = REG(CM_DGAM_RAMB_REGION_0_1);
 	gam_regs.region_end = REG(CM_DGAM_RAMB_REGION_14_15);
 
-	dpp_cm_program_region_lut(xfm_base, params, &gam_regs);
+
+	cm_helper_program_xfer_func(xfm->base.ctx, params, &gam_regs);
 }
 
 /*program de gamma RAM A*/
@@ -616,7 +565,9 @@ void ippn10_program_degamma_luta_settings(
 		const struct pwl_params *params)
 {
 	struct dcn10_dpp *xfm = TO_DCN10_DPP(xfm_base);
-	struct cm_gam_ram_reg gam_regs;
+	struct xfer_func_reg gam_regs;
+
+	dcn10_dpp_cm_get_reg_field(xfm, &gam_regs);
 
 	gam_regs.start_cntl_b = REG(CM_DGAM_RAMA_START_CNTL_B);
 	gam_regs.start_cntl_g = REG(CM_DGAM_RAMA_START_CNTL_G);
@@ -633,7 +584,7 @@ void ippn10_program_degamma_luta_settings(
 	gam_regs.region_start = REG(CM_DGAM_RAMA_REGION_0_1);
 	gam_regs.region_end = REG(CM_DGAM_RAMA_REGION_14_15);
 
-	dpp_cm_program_region_lut(xfm_base, params, &gam_regs);
+	cm_helper_program_xfer_func(xfm->base.ctx, params, &gam_regs);
 }
 
 void ippn10_power_on_degamma_lut(

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_cm_helper.c

+/*
+ * Copyright 2016 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "reg_helper.h"
+#include "dcn10_dpp.h"
+
+#include "dcn10_dpp_cm_helper.h"
+
+#define REG(reg) reg
+
+#define CTX \
+	ctx
+
+#undef FN
+#define FN(reg_name, field_name) \
+	reg->shifts.field_name, reg->masks.field_name
+
+void cm_helper_program_color_matrices(
+		struct dc_context *ctx,
+		const uint16_t *regval,
+		const struct color_matrices_reg *reg)
+{
+	uint32_t cur_csc_reg;
+	unsigned int i = 0;
+
+	for (cur_csc_reg = reg->csc_c11_c12;
+			cur_csc_reg <= reg->csc_c33_c34;
+			cur_csc_reg++) {
+
+		const uint16_t *regval0 = &(regval[2 * i]);
+		const uint16_t *regval1 = &(regval[(2 * i) + 1]);
+
+		REG_SET_2(cur_csc_reg, 0,
+				csc_c11, *regval0,
+				csc_c12, *regval1);
+
+		i++;
+	}
+
+}
+
+void cm_helper_program_xfer_func(
+		struct dc_context *ctx,
+		const struct pwl_params *params,
+		const struct xfer_func_reg *reg)
+{
+	uint32_t reg_region_cur;
+	unsigned int i = 0;
+
+	REG_SET_2(reg->start_cntl_b, 0,
+			exp_region_start, params->arr_points[0].custom_float_x,
+			exp_resion_start_segment, 0);
+	REG_SET_2(reg->start_cntl_g, 0,
+			exp_region_start, params->arr_points[0].custom_float_x,
+			exp_resion_start_segment, 0);
+	REG_SET_2(reg->start_cntl_r, 0,
+			exp_region_start, params->arr_points[0].custom_float_x,
+			exp_resion_start_segment, 0);
+
+	REG_SET(reg->start_slope_cntl_b, 0,
+			field_region_linear_slope, params->arr_points[0].custom_float_slope);
+	REG_SET(reg->start_slope_cntl_g, 0,
+			field_region_linear_slope, params->arr_points[0].custom_float_slope);
+	REG_SET(reg->start_slope_cntl_r, 0,
+			field_region_linear_slope, params->arr_points[0].custom_float_slope);
+
+	REG_SET(reg->start_end_cntl1_b, 0,
+			field_region_end, params->arr_points[1].custom_float_x);
+	REG_SET_2(reg->start_end_cntl2_b, 0,
+			field_region_end_slope, params->arr_points[1].custom_float_slope,
+			field_region_end_base, params->arr_points[1].custom_float_y);
+
+	REG_SET(reg->start_end_cntl1_g, 0,
+			field_region_end, params->arr_points[1].custom_float_x);
+	REG_SET_2(reg->start_end_cntl2_g, 0,
+			field_region_end_slope, params->arr_points[1].custom_float_slope,
+		field_region_end_base, params->arr_points[1].custom_float_y);
+
+	REG_SET(reg->start_end_cntl1_r, 0,
+			field_region_end, params->arr_points[1].custom_float_x);
+	REG_SET_2(reg->start_end_cntl2_r, 0,
+			field_region_end_slope, params->arr_points[1].custom_float_slope,
+		field_region_end_base, params->arr_points[1].custom_float_y);
+
+	for (reg_region_cur = reg->region_start;
+			reg_region_cur <= reg->region_end;
+			reg_region_cur++) {
+
+		const struct gamma_curve *curve0 = &(params->arr_curve_points[2 * i]);
+		const struct gamma_curve *curve1 = &(params->arr_curve_points[(2 * i) + 1]);
+
+		REG_SET_4(reg_region_cur, 0,
+				exp_region0_lut_offset, curve0->offset,
+				exp_region0_num_segments, curve0->segments_num,
+				exp_region1_lut_offset, curve1->offset,
+				exp_region1_num_segments, curve1->segments_num);
+
+		i++;
+	}
+
+}

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_cm_helper.h

+/*
+ * Copyright 2016 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef __DAL_DPP_DCN10_CM_HELPER_H__
+#define __DAL_DPP_DCN10_CM_HELPER_H__
+
+#define TF_HELPER_REG_FIELD_LIST(type) \
+	type exp_region0_lut_offset; \
+	type exp_region0_num_segments; \
+	type exp_region1_lut_offset; \
+	type exp_region1_num_segments;\
+	type field_region_end;\
+	type field_region_end_slope;\
+	type field_region_end_base;\
+	type exp_region_start;\
+	type exp_resion_start_segment;\
+	type field_region_linear_slope
+
+#define TF_CM_REG_FIELD_LIST(type) \
+	type csc_c11; \
+	type csc_c12
+
+struct xfer_func_shift {
+	TF_HELPER_REG_FIELD_LIST(uint8_t);
+};
+
+struct xfer_func_mask {
+	TF_HELPER_REG_FIELD_LIST(uint32_t);
+};
+
+struct xfer_func_reg {
+	struct xfer_func_shift shifts;
+	struct xfer_func_mask masks;
+
+	uint32_t start_cntl_b;
+	uint32_t start_cntl_g;
+	uint32_t start_cntl_r;
+	uint32_t start_slope_cntl_b;
+	uint32_t start_slope_cntl_g;
+	uint32_t start_slope_cntl_r;
+	uint32_t start_end_cntl1_b;
+	uint32_t start_end_cntl2_b;
+	uint32_t start_end_cntl1_g;
+	uint32_t start_end_cntl2_g;
+	uint32_t start_end_cntl1_r;
+	uint32_t start_end_cntl2_r;
+	uint32_t region_start;
+	uint32_t region_end;
+};
+
+struct cm_color_matrix_shift {
+	TF_CM_REG_FIELD_LIST(uint8_t);
+};
+
+struct cm_color_matrix_mask {
+	TF_CM_REG_FIELD_LIST(uint32_t);
+};
+
+struct color_matrices_reg{
+	struct cm_color_matrix_shift shifts;
+	struct cm_color_matrix_mask masks;
+
+	uint32_t csc_c11_c12;
+	uint32_t csc_c33_c34;
+};
+
+void cm_helper_program_color_matrices(
+		struct dc_context *ctx,
+		const uint16_t *regval,
+		const struct color_matrices_reg *reg);
+
+void cm_helper_program_xfer_func(
+		struct dc_context *ctx,
+		const struct pwl_params *params,
+		const struct xfer_func_reg *reg);
+
+#endif