drm/amd/display: add color space option when sending link test pattern

[why]
In the TEST_MSIC dpcd register field definition, the test equipment
has the option to choose between YCbCr601 or YCbCr709.
We will apply corresponding YCbCr coefficient based on this test
request.

[how]
Add a new input parameter in dc_link_dp_set_test_pattern to allow the
selection between different color space.
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

@@ -657,6 +657,7 @@ static ssize_t dp_phy_test_pattern_debugfs_write(struct file *f, const char __us
 	dc_link_set_test_pattern(
 		link,
 		test_pattern,
+		DP_TEST_PATTERN_COLOR_SPACE_RGB,
 		&link_training_settings,
 		custom_pattern,
 		10);

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

@@ -3319,6 +3319,7 @@ void dc_link_disable_hpd(const struct dc_link *link)
 
 void dc_link_set_test_pattern(struct dc_link *link,
 			      enum dp_test_pattern test_pattern,
+			      enum dp_test_pattern_color_space test_pattern_color_space,
 			      const struct link_training_settings *p_link_settings,
 			      const unsigned char *p_custom_pattern,
 			      unsigned int cust_pattern_size)
@@ -3327,6 +3328,7 @@ void dc_link_set_test_pattern(struct dc_link *link,
 		dc_link_dp_set_test_pattern(
 			link,
 			test_pattern,
+			test_pattern_color_space,
 			p_link_settings,
 			p_custom_pattern,
 			cust_pattern_size);

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

@@ -2493,6 +2493,7 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link)
 	dc_link_dp_set_test_pattern(
 		link,
 		test_pattern,
+		DP_TEST_PATTERN_COLOR_SPACE_UNDEFINED,
 		&link_training_settings,
 		test_80_bit_pattern,
 		(DP_TEST_80BIT_CUSTOM_PATTERN_79_72 -
@@ -2504,6 +2505,8 @@ static void dp_test_send_link_test_pattern(struct dc_link *link)
 	union link_test_pattern dpcd_test_pattern;
 	union test_misc dpcd_test_params;
 	enum dp_test_pattern test_pattern;
+	enum dp_test_pattern_color_space test_pattern_color_space =
+			DP_TEST_PATTERN_COLOR_SPACE_UNDEFINED;
 
 	memset(&dpcd_test_pattern, 0, sizeof(dpcd_test_pattern));
 	memset(&dpcd_test_params, 0, sizeof(dpcd_test_params));
@@ -2538,9 +2541,14 @@ static void dp_test_send_link_test_pattern(struct dc_link *link)
 	break;
 	}
 
+	test_pattern_color_space = dpcd_test_params.bits.YCBCR_COEFS ?
+			DP_TEST_PATTERN_COLOR_SPACE_YCBCR709 :
+			DP_TEST_PATTERN_COLOR_SPACE_YCBCR601;
+
 	dc_link_dp_set_test_pattern(
 			link,
 			test_pattern,
+			test_pattern_color_space,
 			NULL,
 			NULL,
 			0);
@@ -3426,7 +3434,8 @@ static bool is_dp_phy_pattern(enum dp_test_pattern test_pattern)
 
 static void set_crtc_test_pattern(struct dc_link *link,
 				struct pipe_ctx *pipe_ctx,
-				enum dp_test_pattern test_pattern)
+				enum dp_test_pattern test_pattern,
+				enum dp_test_pattern_color_space test_pattern_color_space)
 {
 	enum controller_dp_test_pattern controller_test_pattern;
 	enum dc_color_depth color_depth = pipe_ctx->
@@ -3484,8 +3493,27 @@ static void set_crtc_test_pattern(struct dc_link *link,
 				controller_test_pattern, color_depth);
 		else if (opp->funcs->opp_set_disp_pattern_generator) {
 			struct pipe_ctx *odm_pipe;
+			enum controller_dp_color_space controller_color_space;
 			int opp_cnt = 1;
 
+			switch (test_pattern_color_space) {
+			case DP_TEST_PATTERN_COLOR_SPACE_RGB:
+				controller_color_space = CONTROLLER_DP_COLOR_SPACE_RGB;
+				break;
+			case DP_TEST_PATTERN_COLOR_SPACE_YCBCR601:
+				controller_color_space = CONTROLLER_DP_COLOR_SPACE_YCBCR601;
+				break;
+			case DP_TEST_PATTERN_COLOR_SPACE_YCBCR709:
+				controller_color_space = CONTROLLER_DP_COLOR_SPACE_YCBCR709;
+				break;
+			case DP_TEST_PATTERN_COLOR_SPACE_UNDEFINED:
+			default:
+				controller_color_space = CONTROLLER_DP_COLOR_SPACE_UDEFINED;
+				DC_LOG_ERROR("%s: Color space must be defined for test pattern", __func__);
+				ASSERT(0);
+				break;
+			}
+
 			for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe)
 				opp_cnt++;
 
@@ -3497,6 +3525,7 @@ static void set_crtc_test_pattern(struct dc_link *link,
 				odm_opp->funcs->opp_program_bit_depth_reduction(odm_opp, &params);
 				odm_opp->funcs->opp_set_disp_pattern_generator(odm_opp,
 					controller_test_pattern,
+					controller_color_space,
 					color_depth,
 					NULL,
 					width,
@@ -3504,6 +3533,7 @@ static void set_crtc_test_pattern(struct dc_link *link,
 			}
 			opp->funcs->opp_set_disp_pattern_generator(opp,
 				controller_test_pattern,
+				controller_color_space,
 				color_depth,
 				NULL,
 				width,
@@ -3535,6 +3565,7 @@ static void set_crtc_test_pattern(struct dc_link *link,
 				odm_opp->funcs->opp_program_bit_depth_reduction(odm_opp, &params);
 				odm_opp->funcs->opp_set_disp_pattern_generator(odm_opp,
 					CONTROLLER_DP_TEST_PATTERN_VIDEOMODE,
+					CONTROLLER_DP_COLOR_SPACE_UDEFINED,
 					color_depth,
 					NULL,
 					width,
@@ -3542,6 +3573,7 @@ static void set_crtc_test_pattern(struct dc_link *link,
 			}
 			opp->funcs->opp_set_disp_pattern_generator(opp,
 				CONTROLLER_DP_TEST_PATTERN_VIDEOMODE,
+				CONTROLLER_DP_COLOR_SPACE_UDEFINED,
 				color_depth,
 				NULL,
 				width,
@@ -3558,6 +3590,7 @@ static void set_crtc_test_pattern(struct dc_link *link,
 bool dc_link_dp_set_test_pattern(
 	struct dc_link *link,
 	enum dp_test_pattern test_pattern,
+	enum dp_test_pattern_color_space test_pattern_color_space,
 	const struct link_training_settings *p_link_settings,
 	const unsigned char *p_custom_pattern,
 	unsigned int cust_pattern_size)
@@ -3586,7 +3619,7 @@ bool dc_link_dp_set_test_pattern(
 	if (link->test_pattern_enabled && test_pattern ==
 			DP_TEST_PATTERN_VIDEO_MODE) {
 		/* Set CRTC Test Pattern */
-		set_crtc_test_pattern(link, pipe_ctx, test_pattern);
+		set_crtc_test_pattern(link, pipe_ctx, test_pattern, test_pattern_color_space);
 		dp_set_hw_test_pattern(link, test_pattern,
 				(uint8_t *)p_custom_pattern,
 				(uint32_t)cust_pattern_size);
@@ -3701,7 +3734,7 @@ bool dc_link_dp_set_test_pattern(
 		}
 	} else {
 	/* CRTC Patterns */
-		set_crtc_test_pattern(link, pipe_ctx, test_pattern);
+		set_crtc_test_pattern(link, pipe_ctx, test_pattern, test_pattern_color_space);
 		/* Set Test Pattern state */
 		link->test_pattern_enabled = true;
 	}

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

@@ -527,7 +527,7 @@ union test_misc {
 		unsigned char CLR_FORMAT  :2;
 		/* dpcd_test_dyn_range */
 		unsigned char DYN_RANGE   :1;
-		unsigned char YCBCR      :1;
+		unsigned char YCBCR_COEFS :1;
 		/* dpcd_test_bit_depth */
 		unsigned char BPC         :3;
 	} bits;

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

@@ -257,6 +257,7 @@ void dc_link_dp_disable_hpd(const struct dc_link *link);
 bool dc_link_dp_set_test_pattern(
 	struct dc_link *link,
 	enum dp_test_pattern test_pattern,
+	enum dp_test_pattern_color_space test_pattern_color_space,
 	const struct link_training_settings *p_link_settings,
 	const unsigned char *p_custom_pattern,
 	unsigned int cust_pattern_size);
@@ -288,6 +289,7 @@ void dc_link_enable_hpd(const struct dc_link *link);
 void dc_link_disable_hpd(const struct dc_link *link);
 void dc_link_set_test_pattern(struct dc_link *link,
 			enum dp_test_pattern test_pattern,
+			enum dp_test_pattern_color_space test_pattern_color_space,
 			const struct link_training_settings *p_link_settings,
 			const unsigned char *p_custom_pattern,
 			unsigned int cust_pattern_size);

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -223,6 +223,7 @@ void dcn20_init_blank(
 	opp->funcs->opp_set_disp_pattern_generator(
 			opp,
 			CONTROLLER_DP_TEST_PATTERN_SOLID_COLOR,
+			CONTROLLER_DP_COLOR_SPACE_UDEFINED,
 			COLOR_DEPTH_UNDEFINED,
 			&black_color,
 			otg_active_width,
@@ -232,6 +233,7 @@ void dcn20_init_blank(
 		bottom_opp->funcs->opp_set_disp_pattern_generator(
 				bottom_opp,
 				CONTROLLER_DP_TEST_PATTERN_SOLID_COLOR,
+				CONTROLLER_DP_COLOR_SPACE_UDEFINED,
 				COLOR_DEPTH_UNDEFINED,
 				&black_color,
 				otg_active_width,
@@ -851,6 +853,7 @@ void dcn20_blank_pixel_data(
 	struct dc_stream_state *stream = pipe_ctx->stream;
 	enum dc_color_space color_space = stream->output_color_space;
 	enum controller_dp_test_pattern test_pattern = CONTROLLER_DP_TEST_PATTERN_SOLID_COLOR;
+	enum controller_dp_color_space test_pattern_color_space = CONTROLLER_DP_COLOR_SPACE_UDEFINED;
 	struct pipe_ctx *odm_pipe;
 	int odm_cnt = 1;
 
@@ -869,8 +872,10 @@ void dcn20_blank_pixel_data(
 		if (stream_res->abm)
 			stream_res->abm->funcs->set_abm_immediate_disable(stream_res->abm);
 
-		if (dc->debug.visual_confirm != VISUAL_CONFIRM_DISABLE)
+		if (dc->debug.visual_confirm != VISUAL_CONFIRM_DISABLE) {
 			test_pattern = CONTROLLER_DP_TEST_PATTERN_COLORSQUARES;
+			test_pattern_color_space = CONTROLLER_DP_COLOR_SPACE_RGB;
+		}
 	} else {
 		test_pattern = CONTROLLER_DP_TEST_PATTERN_VIDEOMODE;
 	}
@@ -878,6 +883,7 @@ void dcn20_blank_pixel_data(
 	stream_res->opp->funcs->opp_set_disp_pattern_generator(
 			stream_res->opp,
 			test_pattern,
+			test_pattern_color_space,
 			stream->timing.display_color_depth,
 			&black_color,
 			width,
@@ -888,6 +894,7 @@ void dcn20_blank_pixel_data(
 				odm_pipe->stream_res.opp,
 				dc->debug.visual_confirm != VISUAL_CONFIRM_DISABLE && blank ?
 						CONTROLLER_DP_TEST_PATTERN_COLORRAMP : test_pattern,
+				test_pattern_color_space,
 				stream->timing.display_color_depth,
 				&black_color,
 				width,

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_opp.c

@@ -41,6 +41,7 @@
 void opp2_set_disp_pattern_generator(
 		struct output_pixel_processor *opp,
 		enum controller_dp_test_pattern test_pattern,
+		enum controller_dp_color_space color_space,
 		enum dc_color_depth color_depth,
 		const struct tg_color *solid_color,
 		int width,
@@ -100,9 +101,22 @@ void opp2_set_disp_pattern_generator(
 				TEST_PATTERN_DYN_RANGE_CEA :
 				TEST_PATTERN_DYN_RANGE_VESA);
 
+		switch (color_space) {
+		case CONTROLLER_DP_COLOR_SPACE_YCBCR601:
+			mode = TEST_PATTERN_MODE_COLORSQUARES_YCBCR601;
+		break;
+		case CONTROLLER_DP_COLOR_SPACE_YCBCR709:
+			mode = TEST_PATTERN_MODE_COLORSQUARES_YCBCR709;
+		break;
+		case CONTROLLER_DP_COLOR_SPACE_RGB:
+		default:
+			mode = TEST_PATTERN_MODE_COLORSQUARES_RGB;
+		break;
+		}
+
 		REG_UPDATE_6(DPG_CONTROL,
 			DPG_EN, 1,
-			DPG_MODE, TEST_PATTERN_MODE_COLORSQUARES_RGB,
+			DPG_MODE, mode,
 			DPG_DYNAMIC_RANGE, dyn_range,
 			DPG_BIT_DEPTH, bit_depth,
 			DPG_VRES, 6,

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_opp.h

@@ -140,6 +140,7 @@ void dcn20_opp_construct(struct dcn20_opp *oppn20,
 void opp2_set_disp_pattern_generator(
 	struct output_pixel_processor *opp,
 	enum controller_dp_test_pattern test_pattern,
+	enum controller_dp_color_space color_space,
 	enum dc_color_depth color_depth,
 	const struct tg_color *solid_color,
 	int width,

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

@@ -245,6 +245,13 @@ enum controller_dp_test_pattern {
 	CONTROLLER_DP_TEST_PATTERN_SOLID_COLOR
 };
 
+enum controller_dp_color_space {
+	CONTROLLER_DP_COLOR_SPACE_RGB,
+	CONTROLLER_DP_COLOR_SPACE_YCBCR601,
+	CONTROLLER_DP_COLOR_SPACE_YCBCR709,
+	CONTROLLER_DP_COLOR_SPACE_UDEFINED
+};
+
 enum dc_lut_mode {
 	LUT_BYPASS,
 	LUT_RAM_A,

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

@@ -306,6 +306,7 @@ struct opp_funcs {
 	void (*opp_set_disp_pattern_generator)(
 			struct output_pixel_processor *opp,
 			enum controller_dp_test_pattern test_pattern,
+			enum controller_dp_color_space color_space,
 			enum dc_color_depth color_depth,
 			const struct tg_color *solid_color,
 			int width,

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

@@ -123,6 +123,13 @@ enum dp_test_pattern {
 	DP_TEST_PATTERN_UNSUPPORTED
 };
 
+enum dp_test_pattern_color_space {
+	DP_TEST_PATTERN_COLOR_SPACE_RGB,
+	DP_TEST_PATTERN_COLOR_SPACE_YCBCR601,
+	DP_TEST_PATTERN_COLOR_SPACE_YCBCR709,
+	DP_TEST_PATTERN_COLOR_SPACE_UNDEFINED
+};
+
 enum dp_panel_mode {
 	/* not required */
 	DP_PANEL_MODE_DEFAULT,