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: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex 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/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
 };