drm/amd/display: Add DCN2 DPP

Add support to program the DCN2 DPP (Multiple pipe and plane combine)

HW Blocks:

    +--------+
    |  DPP   |
    +--------+
        |
        v
    +--------+
    |  MPC   |
    +--------+
        |
        v
    +-------+
    |  OPP  |
    +-------+
        |
        v
    +--------+
    |  OPTC  |
    +--------+
        |
        v
    +--------+       +--------+
    |  DIO   |       |  DCCG  |
    +--------+       +--------+
Signed-off-by: NHarry Wentland <harry.wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -290,7 +290,12 @@ void dpp1_cnv_setup (
 		enum surface_pixel_format format,
 		enum expansion_mode mode,
 		struct dc_csc_transform input_csc_color_matrix,
+#ifdef CONFIG_DRM_AMD_DC_DCN2_0
+		enum dc_color_space input_color_space,
+		struct cnv_alpha_2bit_lut *alpha_2bit_lut)
+#else
 		enum dc_color_space input_color_space)
+#endif
 {
 	uint32_t pixel_format;
 	uint32_t alpha_en;
@@ -523,6 +528,11 @@ static const struct dpp_funcs dcn10_dpp_funcs = {
 		.set_optional_cursor_attributes = dpp1_cnv_set_optional_cursor_attributes,
 		.dpp_dppclk_control = dpp1_dppclk_control,
 		.dpp_set_hdr_multiplier = dpp1_set_hdr_multiplier,
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+		.dpp_program_blnd_lut = NULL,
+		.dpp_program_shaper_lut = NULL,
+		.dpp_program_3dlut = NULL
+#endif
 };
 
 static struct dpp_caps dcn10_dpp_cap = {

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

@@ -1486,7 +1486,12 @@ void dpp1_cnv_setup (
 		enum surface_pixel_format format,
 		enum expansion_mode mode,
 		struct dc_csc_transform input_csc_color_matrix,
+#ifdef CONFIG_DRM_AMD_DC_DCN2_0
+		enum dc_color_space input_color_space,
+		struct cnv_alpha_2bit_lut *alpha_2bit_lut);
+#else
 		enum dc_color_space input_color_space);
+#endif
 
 void dpp1_full_bypass(struct dpp *dpp_base);
 

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

@@ -731,6 +731,10 @@ void dpp1_full_bypass(struct dpp *dpp_base)
 	/* COLOR_KEYER_CONTROL.COLOR_KEYER_EN = 0 this should be default */
 	if (dpp->tf_mask->CM_BYPASS_EN)
 		REG_SET(CM_CONTROL, 0, CM_BYPASS_EN, 1);
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	else
+		REG_SET(CM_CONTROL, 0, CM_BYPASS, 1);
+#endif
 
 	/* Setting degamma bypass for now */
 	REG_SET(CM_DGAM_CONTROL, 0, CM_DGAM_LUT_MODE, 0);

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c

@@ -218,6 +218,14 @@ static void dpp1_dscl_set_lb(
 			INTERLEAVE_EN, lb_params->interleave_en, /* Interleave source enable */
 			LB_DATA_FORMAT__ALPHA_EN, lb_params->alpha_en); /* Alpha enable */
 	}
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	else {
+		/* DSCL caps: pixel data processed in float format */
+		REG_SET_2(LB_DATA_FORMAT, 0,
+			INTERLEAVE_EN, lb_params->interleave_en, /* Interleave source enable */
+			LB_DATA_FORMAT__ALPHA_EN, lb_params->alpha_en); /* Alpha enable */
+	}
+#endif
 
 	REG_SET_2(LB_MEMORY_CTRL, 0,
 		MEMORY_CONFIG, mem_size_config,

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dpp.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 "dm_services.h"
+
+#include "core_types.h"
+
+#include "reg_helper.h"
+#include "dcn20_dpp.h"
+#include "basics/conversion.h"
+
+#define NUM_PHASES    64
+#define HORZ_MAX_TAPS 8
+#define VERT_MAX_TAPS 8
+
+#define BLACK_OFFSET_RGB_Y 0x0
+#define BLACK_OFFSET_CBCR  0x8000
+
+#define REG(reg)\
+	dpp->tf_regs->reg
+
+#define CTX \
+	dpp->base.ctx
+
+#undef FN
+#define FN(reg_name, field_name) \
+	dpp->tf_shift->field_name, dpp->tf_mask->field_name
+
+void dpp20_read_state(struct dpp *dpp_base,
+		struct dcn_dpp_state *s)
+{
+	struct dcn20_dpp *dpp = TO_DCN20_DPP(dpp_base);
+
+	REG_GET(DPP_CONTROL,
+			DPP_CLOCK_ENABLE, &s->is_enabled);
+	REG_GET(CM_DGAM_CONTROL,
+			CM_DGAM_LUT_MODE, &s->dgam_lut_mode);
+	// BGAM has no ROM, and definition is different, can't reuse same dump
+	//REG_GET(CM_BLNDGAM_CONTROL,
+	//		CM_BLNDGAM_LUT_MODE, &s->rgam_lut_mode);
+	REG_GET(CM_GAMUT_REMAP_CONTROL,
+			CM_GAMUT_REMAP_MODE, &s->gamut_remap_mode);
+	if (s->gamut_remap_mode) {
+		s->gamut_remap_c11_c12 = REG_READ(CM_GAMUT_REMAP_C11_C12);
+		s->gamut_remap_c13_c14 = REG_READ(CM_GAMUT_REMAP_C13_C14);
+		s->gamut_remap_c21_c22 = REG_READ(CM_GAMUT_REMAP_C21_C22);
+		s->gamut_remap_c23_c24 = REG_READ(CM_GAMUT_REMAP_C23_C24);
+		s->gamut_remap_c31_c32 = REG_READ(CM_GAMUT_REMAP_C31_C32);
+		s->gamut_remap_c33_c34 = REG_READ(CM_GAMUT_REMAP_C33_C34);
+	}
+}
+
+void dpp2_dummy_program_input_lut(
+		struct dpp *dpp_base,
+		const struct dc_gamma *gamma)
+{}
+
+static void dpp2_cnv_setup (
+		struct dpp *dpp_base,
+		enum surface_pixel_format format,
+		enum expansion_mode mode,
+		struct dc_csc_transform input_csc_color_matrix,
+		enum dc_color_space input_color_space,
+		struct cnv_alpha_2bit_lut *alpha_2bit_lut)
+{
+	struct dcn20_dpp *dpp = TO_DCN20_DPP(dpp_base);
+	uint32_t pixel_format = 0;
+	uint32_t alpha_en = 1;
+	enum dc_color_space color_space = COLOR_SPACE_SRGB;
+	enum dcn10_input_csc_select select = INPUT_CSC_SELECT_BYPASS;
+	bool force_disable_cursor = false;
+	struct out_csc_color_matrix tbl_entry;
+	uint32_t is_2bit = 0;
+	int i = 0;
+
+	REG_SET_2(FORMAT_CONTROL, 0,
+		CNVC_BYPASS, 0,
+		FORMAT_EXPANSION_MODE, mode);
+
+	//hardcode default
+    //FORMAT_CONTROL. FORMAT_CNV16                                 	default 0: U0.16/S.1.15;         1: U1.15/ S.1.14
+    //FORMAT_CONTROL. CNVC_BYPASS_MSB_ALIGN          				default 0: disabled              1: enabled
+    //FORMAT_CONTROL. CLAMP_POSITIVE                               	default 0: disabled              1: enabled
+    //FORMAT_CONTROL. CLAMP_POSITIVE_C                          	default 0: disabled              1: enabled
+	REG_UPDATE(FORMAT_CONTROL, FORMAT_CNV16, 0);
+	REG_UPDATE(FORMAT_CONTROL, CNVC_BYPASS_MSB_ALIGN, 0);
+	REG_UPDATE(FORMAT_CONTROL, CLAMP_POSITIVE, 0);
+	REG_UPDATE(FORMAT_CONTROL, CLAMP_POSITIVE_C, 0);
+
+	switch (format) {
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
+		pixel_format = 1;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
+		pixel_format = 3;
+		alpha_en = 0;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
+		pixel_format = 8;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
+		pixel_format = 10;
+		is_2bit = 1;
+		break;
+	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCbCr:
+		force_disable_cursor = false;
+		pixel_format = 65;
+		color_space = COLOR_SPACE_YCBCR709;
+		select = INPUT_CSC_SELECT_ICSC;
+		break;
+	case SURFACE_PIXEL_FORMAT_VIDEO_420_YCrCb:
+		force_disable_cursor = true;
+		pixel_format = 64;
+		color_space = COLOR_SPACE_YCBCR709;
+		select = INPUT_CSC_SELECT_ICSC;
+		break;
+	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCbCr:
+		force_disable_cursor = true;
+		pixel_format = 67;
+		color_space = COLOR_SPACE_YCBCR709;
+		select = INPUT_CSC_SELECT_ICSC;
+		break;
+	case SURFACE_PIXEL_FORMAT_VIDEO_420_10bpc_YCrCb:
+		force_disable_cursor = true;
+		pixel_format = 66;
+		color_space = COLOR_SPACE_YCBCR709;
+		select = INPUT_CSC_SELECT_ICSC;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+		pixel_format = 22;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F:
+		pixel_format = 24;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
+		pixel_format = 25;
+		break;
+	case SURFACE_PIXEL_FORMAT_VIDEO_AYCrCb8888:
+		pixel_format = 12;
+		color_space = COLOR_SPACE_YCBCR709;
+		select = INPUT_CSC_SELECT_ICSC;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_RGB111110_FIX:
+		pixel_format = 112;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_BGR101111_FIX:
+		pixel_format = 113;
+		break;
+	case SURFACE_PIXEL_FORMAT_VIDEO_ACrYCb2101010:
+		pixel_format = 114;
+		color_space = COLOR_SPACE_YCBCR709;
+		select = INPUT_CSC_SELECT_ICSC;
+		is_2bit = 1;
+		break;
+	case SURFACE_PIXEL_FORMAT_VIDEO_CrYCbA1010102:
+		pixel_format = 115;
+		color_space = COLOR_SPACE_YCBCR709;
+		select = INPUT_CSC_SELECT_ICSC;
+		is_2bit = 1;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_RGB111110_FLOAT:
+		pixel_format = 118;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_BGR101111_FLOAT:
+		pixel_format = 119;
+		break;
+	default:
+		break;
+	}
+
+	if (is_2bit == 1 && alpha_2bit_lut != NULL) {
+		REG_UPDATE(ALPHA_2BIT_LUT, ALPHA_2BIT_LUT0, alpha_2bit_lut->lut0);
+		REG_UPDATE(ALPHA_2BIT_LUT, ALPHA_2BIT_LUT1, alpha_2bit_lut->lut1);
+		REG_UPDATE(ALPHA_2BIT_LUT, ALPHA_2BIT_LUT2, alpha_2bit_lut->lut2);
+		REG_UPDATE(ALPHA_2BIT_LUT, ALPHA_2BIT_LUT3, alpha_2bit_lut->lut3);
+	}
+
+	REG_SET(CNVC_SURFACE_PIXEL_FORMAT, 0,
+			CNVC_SURFACE_PIXEL_FORMAT, pixel_format);
+	REG_UPDATE(FORMAT_CONTROL, FORMAT_CONTROL__ALPHA_EN, alpha_en);
+
+	// if input adjustments exist, program icsc with those values
+	if (input_csc_color_matrix.enable_adjustment
+				== true) {
+		for (i = 0; i < 12; i++)
+			tbl_entry.regval[i] = input_csc_color_matrix.matrix[i];
+
+		tbl_entry.color_space = input_color_space;
+
+		if (color_space >= COLOR_SPACE_YCBCR601)
+			select = INPUT_CSC_SELECT_ICSC;
+		else
+			select = INPUT_CSC_SELECT_BYPASS;
+
+		dpp1_program_input_csc(dpp_base, color_space, select, &tbl_entry);
+	} else
+	dpp1_program_input_csc(dpp_base, color_space, select, NULL);
+
+	if (force_disable_cursor) {
+		REG_UPDATE(CURSOR_CONTROL,
+				CURSOR_ENABLE, 0);
+		REG_UPDATE(CURSOR0_CONTROL,
+				CUR0_ENABLE, 0);
+
+	}
+
+}
+
+void dpp2_cnv_set_bias_scale(
+		struct dpp *dpp_base,
+		struct  dc_bias_and_scale *bias_and_scale)
+{
+	struct dcn20_dpp *dpp = TO_DCN20_DPP(dpp_base);
+
+	REG_UPDATE(FCNV_FP_BIAS_R, FCNV_FP_BIAS_R, bias_and_scale->bias_red);
+	REG_UPDATE(FCNV_FP_BIAS_G, FCNV_FP_BIAS_G, bias_and_scale->bias_green);
+	REG_UPDATE(FCNV_FP_BIAS_B, FCNV_FP_BIAS_B, bias_and_scale->bias_blue);
+	REG_UPDATE(FCNV_FP_SCALE_R, FCNV_FP_SCALE_R, bias_and_scale->scale_red);
+	REG_UPDATE(FCNV_FP_SCALE_G, FCNV_FP_SCALE_G, bias_and_scale->scale_green);
+	REG_UPDATE(FCNV_FP_SCALE_B, FCNV_FP_SCALE_B, bias_and_scale->scale_blue);
+}
+
+/*compute the maximum number of lines that we can fit in the line buffer*/
+void dscl2_calc_lb_num_partitions(
+		const struct scaler_data *scl_data,
+		enum lb_memory_config lb_config,
+		int *num_part_y,
+		int *num_part_c)
+{
+	int line_size = scl_data->viewport.width < scl_data->recout.width ?
+			scl_data->viewport.width : scl_data->recout.width;
+	int line_size_c = scl_data->viewport_c.width < scl_data->recout.width ?
+			scl_data->viewport_c.width : scl_data->recout.width;
+	int memory_line_size_y = (line_size + 5) / 6; /* +5 to ceil */
+	int memory_line_size_c = (line_size_c + 5) / 6; /* +5 to ceil */
+	int memory_line_size_a = (line_size + 5) / 6; /* +5 to ceil */
+	int lb_memory_size, lb_memory_size_c, lb_memory_size_a, num_partitions_a;
+
+	if (lb_config == LB_MEMORY_CONFIG_1) {
+		lb_memory_size = 970;
+		lb_memory_size_c = 970;
+		lb_memory_size_a = 970;
+	} else if (lb_config == LB_MEMORY_CONFIG_2) {
+		lb_memory_size = 1290;
+		lb_memory_size_c = 1290;
+		lb_memory_size_a = 1290;
+	} else if (lb_config == LB_MEMORY_CONFIG_3) {
+		/* 420 mode: using 3rd mem from Y, Cr and Cb */
+		lb_memory_size = 970 + 1290 + 484 + 484 + 484;
+		lb_memory_size_c = 970 + 1290;
+		lb_memory_size_a = 970 + 1290 + 484;
+	} else {
+		lb_memory_size = 970 + 1290 + 484;
+		lb_memory_size_c = 970 + 1290 + 484;
+		lb_memory_size_a = 970 + 1290 + 484;
+	}
+	*num_part_y = lb_memory_size / memory_line_size_y;
+	*num_part_c = lb_memory_size_c / memory_line_size_c;
+	num_partitions_a = lb_memory_size_a / memory_line_size_a;
+
+	if (scl_data->lb_params.alpha_en
+			&& (num_partitions_a < *num_part_y))
+		*num_part_y = num_partitions_a;
+
+	if (*num_part_y > 64)
+		*num_part_y = 64;
+	if (*num_part_c > 64)
+		*num_part_c = 64;
+}
+
+void dpp2_cnv_set_alpha_keyer(
+		struct dpp *dpp_base,
+		struct cnv_color_keyer_params *color_keyer)
+{
+	struct dcn20_dpp *dpp = TO_DCN20_DPP(dpp_base);
+
+	REG_UPDATE(COLOR_KEYER_CONTROL, COLOR_KEYER_EN, color_keyer->color_keyer_en);
+
+	REG_UPDATE(COLOR_KEYER_CONTROL, COLOR_KEYER_MODE, color_keyer->color_keyer_mode);
+
+	REG_UPDATE(COLOR_KEYER_ALPHA, COLOR_KEYER_ALPHA_LOW, color_keyer->color_keyer_alpha_low);
+	REG_UPDATE(COLOR_KEYER_ALPHA, COLOR_KEYER_ALPHA_HIGH, color_keyer->color_keyer_alpha_high);
+
+	REG_UPDATE(COLOR_KEYER_RED, COLOR_KEYER_RED_LOW, color_keyer->color_keyer_red_low);
+	REG_UPDATE(COLOR_KEYER_RED, COLOR_KEYER_RED_HIGH, color_keyer->color_keyer_red_high);
+
+	REG_UPDATE(COLOR_KEYER_GREEN, COLOR_KEYER_GREEN_LOW, color_keyer->color_keyer_green_low);
+	REG_UPDATE(COLOR_KEYER_GREEN, COLOR_KEYER_GREEN_HIGH, color_keyer->color_keyer_green_high);
+
+	REG_UPDATE(COLOR_KEYER_BLUE, COLOR_KEYER_BLUE_LOW, color_keyer->color_keyer_blue_low);
+	REG_UPDATE(COLOR_KEYER_BLUE, COLOR_KEYER_BLUE_HIGH, color_keyer->color_keyer_blue_high);
+}
+
+void dpp2_set_cursor_attributes(
+		struct dpp *dpp_base,
+		enum dc_cursor_color_format color_format)
+{
+	struct dcn20_dpp *dpp = TO_DCN20_DPP(dpp_base);
+	int cur_rom_en = 0;
+
+	if (color_format == CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA ||
+		color_format == CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA)
+		cur_rom_en = 1;
+
+	REG_UPDATE_3(CURSOR0_CONTROL,
+			CUR0_MODE, color_format,
+			CUR0_EXPANSION_MODE, 0,
+			CUR0_ROM_EN, cur_rom_en);
+
+	if (color_format == CURSOR_MODE_MONO) {
+		/* todo: clarify what to program these to */
+		REG_UPDATE(CURSOR0_COLOR0,
+				CUR0_COLOR0, 0x00000000);
+		REG_UPDATE(CURSOR0_COLOR1,
+				CUR0_COLOR1, 0xFFFFFFFF);
+	}
+}
+
+#define IDENTITY_RATIO(ratio) (dc_fixpt_u3d19(ratio) == (1 << 19))
+
+bool dpp2_get_optimal_number_of_taps(
+		struct dpp *dpp,
+		struct scaler_data *scl_data,
+		const struct scaling_taps *in_taps)
+{
+	uint32_t pixel_width;
+
+	if (scl_data->viewport.width > scl_data->recout.width)
+		pixel_width = scl_data->recout.width;
+	else
+		pixel_width = scl_data->viewport.width;
+
+	/* Some ASICs does not support  FP16 scaling, so we reject modes require this*/
+	if (scl_data->viewport.width  != scl_data->h_active &&
+		scl_data->viewport.height != scl_data->v_active &&
+		dpp->caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT &&
+		scl_data->format == PIXEL_FORMAT_FP16)
+		return false;
+
+	if (scl_data->viewport.width > scl_data->h_active &&
+		dpp->ctx->dc->debug.max_downscale_src_width != 0 &&
+		scl_data->viewport.width > dpp->ctx->dc->debug.max_downscale_src_width)
+		return false;
+
+	/* TODO: add lb check */
+
+	/* No support for programming ratio of 8, drop to 7.99999.. */
+	if (scl_data->ratios.horz.value == (8ll << 32))
+		scl_data->ratios.horz.value--;
+	if (scl_data->ratios.vert.value == (8ll << 32))
+		scl_data->ratios.vert.value--;
+	if (scl_data->ratios.horz_c.value == (8ll << 32))
+		scl_data->ratios.horz_c.value--;
+	if (scl_data->ratios.vert_c.value == (8ll << 32))
+		scl_data->ratios.vert_c.value--;
+
+	/* Set default taps if none are provided */
+	if (in_taps->h_taps == 0) {
+		if (dc_fixpt_ceil(scl_data->ratios.horz) > 4)
+			scl_data->taps.h_taps = 8;
+		else
+			scl_data->taps.h_taps = 4;
+	} else
+		scl_data->taps.h_taps = in_taps->h_taps;
+	if (in_taps->v_taps == 0) {
+		if (dc_fixpt_ceil(scl_data->ratios.vert) > 4)
+			scl_data->taps.v_taps = 8;
+		else
+			scl_data->taps.v_taps = 4;
+	} else
+		scl_data->taps.v_taps = in_taps->v_taps;
+	if (in_taps->v_taps_c == 0) {
+		if (dc_fixpt_ceil(scl_data->ratios.vert_c) > 4)
+			scl_data->taps.v_taps_c = 4;
+		else
+			scl_data->taps.v_taps_c = 2;
+	} else
+		scl_data->taps.v_taps_c = in_taps->v_taps_c;
+	if (in_taps->h_taps_c == 0) {
+		if (dc_fixpt_ceil(scl_data->ratios.horz_c) > 4)
+			scl_data->taps.h_taps_c = 4;
+		else
+			scl_data->taps.h_taps_c = 2;
+	} else if ((in_taps->h_taps_c % 2) != 0 && in_taps->h_taps_c != 1)
+		/* Only 1 and even h_taps_c are supported by hw */
+		scl_data->taps.h_taps_c = in_taps->h_taps_c - 1;
+	else
+		scl_data->taps.h_taps_c = in_taps->h_taps_c;
+
+	if (!dpp->ctx->dc->debug.always_scale) {
+		if (IDENTITY_RATIO(scl_data->ratios.horz))
+			scl_data->taps.h_taps = 1;
+		if (IDENTITY_RATIO(scl_data->ratios.vert))
+			scl_data->taps.v_taps = 1;
+		if (IDENTITY_RATIO(scl_data->ratios.horz_c))
+			scl_data->taps.h_taps_c = 1;
+		if (IDENTITY_RATIO(scl_data->ratios.vert_c))
+			scl_data->taps.v_taps_c = 1;
+	}
+
+	return true;
+}
+
+void oppn20_dummy_program_regamma_pwl(
+		struct dpp *dpp,
+		const struct pwl_params *params,
+		enum opp_regamma mode)
+{}
+
+static struct dpp_funcs dcn20_dpp_funcs = {
+	.dpp_read_state = dpp20_read_state,
+	.dpp_reset = dpp_reset,
+	.dpp_set_scaler = dpp1_dscl_set_scaler_manual_scale,
+	.dpp_get_optimal_number_of_taps = dpp2_get_optimal_number_of_taps,
+	.dpp_set_gamut_remap = dpp1_cm_set_gamut_remap,
+	.dpp_set_csc_adjustment = NULL,
+	.dpp_set_csc_default = NULL,
+	.dpp_program_regamma_pwl = oppn20_dummy_program_regamma_pwl,
+	.dpp_set_degamma		= dpp2_set_degamma,
+	.dpp_program_input_lut		= dpp2_dummy_program_input_lut,
+	.dpp_full_bypass		= dpp1_full_bypass,
+	.dpp_setup			= dpp2_cnv_setup,
+	.dpp_program_degamma_pwl	= dpp2_set_degamma_pwl,
+	.dpp_program_blnd_lut = dpp20_program_blnd_lut,
+	.dpp_program_shaper_lut = dpp20_program_shaper,
+	.dpp_program_3dlut = dpp20_program_3dlut,
+	.dpp_program_bias_and_scale = NULL,
+	.dpp_cnv_set_alpha_keyer = dpp2_cnv_set_alpha_keyer,
+	.set_cursor_attributes = dpp2_set_cursor_attributes,
+	.set_cursor_position = dpp1_set_cursor_position,
+	.set_optional_cursor_attributes = dpp1_cnv_set_optional_cursor_attributes,
+	.dpp_dppclk_control = dpp1_dppclk_control,
+	.dpp_set_hdr_multiplier = dpp2_set_hdr_multiplier,
+};
+
+static struct dpp_caps dcn20_dpp_cap = {
+	.dscl_data_proc_format = DSCL_DATA_PRCESSING_FLOAT_FORMAT,
+	.dscl_calc_lb_num_partitions = dscl2_calc_lb_num_partitions,
+};
+
+bool dpp2_construct(
+	struct dcn20_dpp *dpp,
+	struct dc_context *ctx,
+	uint32_t inst,
+	const struct dcn2_dpp_registers *tf_regs,
+	const struct dcn2_dpp_shift *tf_shift,
+	const struct dcn2_dpp_mask *tf_mask)
+{
+	dpp->base.ctx = ctx;
+
+	dpp->base.inst = inst;
+	dpp->base.funcs = &dcn20_dpp_funcs;
+	dpp->base.caps = &dcn20_dpp_cap;
+
+	dpp->tf_regs = tf_regs;
+	dpp->tf_shift = tf_shift;
+	dpp->tf_mask = tf_mask;
+
+	dpp->lb_pixel_depth_supported =
+		LB_PIXEL_DEPTH_18BPP |
+		LB_PIXEL_DEPTH_24BPP |
+		LB_PIXEL_DEPTH_30BPP;
+
+	dpp->lb_bits_per_entry = LB_BITS_PER_ENTRY;
+	dpp->lb_memory_size = LB_TOTAL_NUMBER_OF_ENTRIES; /*0x1404*/
+
+	return true;
+}
+

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

@@ -36,7 +36,13 @@ struct dpp {
 	struct dpp_caps *caps;
 	struct pwl_params regamma_params;
 	struct pwl_params degamma_params;
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	struct dpp_cursor_attributes cur_attr;
+#endif
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	struct pwl_params shaper_params;
+#endif
 };
 
 struct dpp_input_csc_matrix {
@@ -49,6 +55,34 @@ struct dpp_grph_csc_adjustment {
 	enum graphics_gamut_adjust_type gamut_adjust_type;
 };
 
+#ifdef CONFIG_DRM_AMD_DC_DCN2_0
+struct cnv_color_keyer_params {
+	int color_keyer_en;
+	int color_keyer_mode;
+	int color_keyer_alpha_low;
+	int color_keyer_alpha_high;
+	int color_keyer_red_low;
+	int color_keyer_red_high;
+	int color_keyer_green_low;
+	int color_keyer_green_high;
+	int color_keyer_blue_low;
+	int color_keyer_blue_high;
+};
+
+/* new for dcn2: set the 8bit alpha values based on the 2 bit alpha
+ *ALPHA_2BIT_LUT. ALPHA_2BIT_LUT0   default: 0b00000000
+ *ALPHA_2BIT_LUT. ALPHA_2BIT_LUT1   default: 0b01010101
+ *ALPHA_2BIT_LUT. ALPHA_2BIT_LUT2   default: 0b10101010
+ *ALPHA_2BIT_LUT. ALPHA_2BIT_LUT3   default: 0b11111111
+ */
+struct cnv_alpha_2bit_lut {
+	int lut0;
+	int lut1;
+	int lut2;
+	int lut3;
+};
+#endif
+
 struct dcn_dpp_state {
 	uint32_t is_enabled;
 	uint32_t igam_lut_mode;
@@ -155,7 +189,12 @@ struct dpp_funcs {
 			enum surface_pixel_format format,
 			enum expansion_mode mode,
 			struct dc_csc_transform input_csc_color_matrix,
+#ifdef CONFIG_DRM_AMD_DC_DCN2_0
+			enum dc_color_space input_color_space,
+			struct cnv_alpha_2bit_lut *alpha_2bit_lut);
+#else
 			enum dc_color_space input_color_space);
+#endif
 
 	void (*dpp_full_bypass)(struct dpp *dpp_base);
 
@@ -184,6 +223,20 @@ struct dpp_funcs {
 			bool dppclk_div,
 			bool enable);
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+	bool (*dpp_program_blnd_lut)(
+			struct dpp *dpp,
+			const struct pwl_params *params);
+	bool (*dpp_program_shaper_lut)(
+			struct dpp *dpp,
+			const struct pwl_params *params);
+	bool (*dpp_program_3dlut)(
+			struct dpp *dpp,
+			struct tetrahedral_params *params);
+	void (*dpp_cnv_set_alpha_keyer)(
+			struct dpp *dpp_base,
+			struct cnv_color_keyer_params *color_keyer);
+#endif
 };