drm/amd/display: Add DCN3 DPP

Add support to program the DCN3 DPP (Multiple pipe and plane combine)

HW Blocks:

    +--------+
    |  DPP   |
    +--------+
        |
        v
    +--------+
    |  MPC   |
    +--------+
        |
        v
    +-------+
    |  OPP  |
    +-------+
        |
        v
    +--------+
    |  OPTC  |
    +--------+
        |
        v
    +--------+       +--------+
    |  DIO   |       |  DCCG  |
    +--------+       +--------+
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.h

+/*
+ * Copyright 2020 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 "dcn10/dcn10_cm_common.h"
+
+#ifndef __DAL_DCN30_CM_COMMON_H__
+#define __DAL_DCN30_CM_COMMON_H__
+
+#define TF_HELPER_REG_FIELD_LIST_DCN3(type) \
+	TF_HELPER_REG_FIELD_LIST(type);\
+	type field_region_start_base;\
+	type field_offset
+
+struct DCN3_xfer_func_shift {
+	TF_HELPER_REG_FIELD_LIST_DCN3(uint8_t);
+};
+
+struct DCN3_xfer_func_mask {
+	TF_HELPER_REG_FIELD_LIST_DCN3(uint32_t);
+};
+
+struct dcn3_xfer_func_reg {
+	struct DCN3_xfer_func_shift shifts;
+	struct DCN3_xfer_func_mask masks;
+
+	TF_HELPER_REG_LIST;
+	uint32_t offset_b;
+	uint32_t offset_g;
+	uint32_t offset_r;
+	uint32_t start_base_cntl_b;
+	uint32_t start_base_cntl_g;
+	uint32_t start_base_cntl_r;
+};
+
+void cm_helper_program_gamcor_xfer_func(
+	struct dc_context *ctx,
+	const struct pwl_params *params,
+	const struct dcn3_xfer_func_reg *reg);
+
+bool cm3_helper_translate_curve_to_hw_format(
+	const struct dc_transfer_func *output_tf,
+	struct pwl_params *lut_params, bool fixpoint);
+
+bool cm3_helper_translate_curve_to_degamma_hw_format(
+				const struct dc_transfer_func *output_tf,
+				struct pwl_params *lut_params);
+
+bool cm3_helper_convert_to_custom_float(
+		struct pwl_result_data *rgb_resulted,
+		struct curve_points3 *corner_points,
+		uint32_t hw_points_num,
+		bool fixpoint);
+
+bool is_rgb_equal(const struct pwl_result_data *rgb, uint32_t num);
+
+#endif

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

@@ -121,6 +121,13 @@ struct CM_bias_params {
 };
 
 struct dpp_funcs {
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+	bool (*dpp_program_gamcor_lut)(
+		struct dpp *dpp_base, const struct pwl_params *params);
+
+	void (*dpp_set_pre_degam)(struct dpp *dpp_base,
+			enum dc_transfer_func_predefined tr);
+#endif
 
 	void (*dpp_program_cm_dealpha)(struct dpp *dpp_base,
 		uint32_t enable, uint32_t additive_blending);