drm/amd/display: Add DP 2.0 SST DC Support

1. Retrieve 128/132b link cap.
2. 128/132b link training and payload allocation.
3. UHBR10 link rate support.

[squash in warning fixes - Alex]
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -751,3 +751,11 @@ void dm_helpers_mst_enable_stream_features(const struct dc_stream_state *stream)
 					 &new_downspread.raw,
 					 sizeof(new_downspread));
 }
+
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+void dm_set_phyd32clk(struct dc_context *ctx, int freq_khz)
+{
+       // FPGA programming for this clock in diags framework that
+       // needs to go through dm layer, therefore leave dummy interace here
+}
+#endif
\ No newline at end of file

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

@@ -255,6 +255,24 @@ static bool create_links(
 			goto failed_alloc;
 		}
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+		if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment) &&
+				dc->caps.dp_hpo &&
+				link->dc->res_pool->res_cap->num_hpo_dp_link_encoder > 0) {
+			/* FPGA case - Allocate HPO DP link encoder */
+			if (i < link->dc->res_pool->res_cap->num_hpo_dp_link_encoder) {
+				link->hpo_dp_link_enc = link->dc->res_pool->hpo_dp_link_enc[i];
+
+				if (link->hpo_dp_link_enc == NULL) {
+					BREAK_TO_DEBUGGER();
+					goto failed_alloc;
+				}
+				link->hpo_dp_link_enc->hpd_source = link->link_enc->hpd_source;
+				link->hpo_dp_link_enc->transmitter = link->link_enc->transmitter;
+			}
+		}
+#endif
+
 		link->link_status.dpcd_caps = &link->dpcd_caps;
 
 		enc_init.ctx = dc->ctx;

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

@@ -41,6 +41,7 @@
 #include "set_mode_types.h"
 #include "virtual/virtual_stream_encoder.h"
 #include "dpcd_defs.h"
+#include "dc_link_dp.h"
 
 #if defined(CONFIG_DRM_AMD_DC_SI)
 #include "dce60/dce60_resource.h"
@@ -346,6 +347,29 @@ bool resource_construct(
 		}
 	}
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	pool->hpo_dp_stream_enc_count = 0;
+	if (create_funcs->create_hpo_dp_stream_encoder) {
+		for (i = 0; i < caps->num_hpo_dp_stream_encoder; i++) {
+			pool->hpo_dp_stream_enc[i] = create_funcs->create_hpo_dp_stream_encoder(i+ENGINE_ID_HPO_DP_0, ctx);
+			if (pool->hpo_dp_stream_enc[i] == NULL)
+				DC_ERR("DC: failed to create HPO DP stream encoder!\n");
+			pool->hpo_dp_stream_enc_count++;
+
+		}
+	}
+
+	pool->hpo_dp_link_enc_count = 0;
+	if (create_funcs->create_hpo_dp_link_encoder) {
+		for (i = 0; i < caps->num_hpo_dp_link_encoder; i++) {
+			pool->hpo_dp_link_enc[i] = create_funcs->create_hpo_dp_link_encoder(i, ctx);
+			if (pool->hpo_dp_link_enc[i] == NULL)
+				DC_ERR("DC: failed to create HPO DP link encoder!\n");
+			pool->hpo_dp_link_enc_count++;
+		}
+	}
+#endif
+
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	for (i = 0; i < caps->num_mpc_3dlut; i++) {
 		pool->mpc_lut[i] = dc_create_3dlut_func();
@@ -1665,6 +1689,22 @@ static void update_stream_engine_usage(
 	}
 }
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+static void update_hpo_dp_stream_engine_usage(
+		struct resource_context *res_ctx,
+		const struct resource_pool *pool,
+		struct hpo_dp_stream_encoder *hpo_dp_stream_enc,
+		bool acquired)
+{
+	int i;
+
+	for (i = 0; i < pool->hpo_dp_stream_enc_count; i++) {
+		if (pool->hpo_dp_stream_enc[i] == hpo_dp_stream_enc)
+			res_ctx->is_hpo_dp_stream_enc_acquired[i] = acquired;
+	}
+}
+#endif
+
 /* TODO: release audio object */
 void update_audio_usage(
 		struct resource_context *res_ctx,
@@ -1709,6 +1749,26 @@ static int acquire_first_free_pipe(
 	return -1;
 }
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+static struct hpo_dp_stream_encoder *find_first_free_match_hpo_dp_stream_enc_for_link(
+		struct resource_context *res_ctx,
+		const struct resource_pool *pool,
+		struct dc_stream_state *stream)
+{
+	int i;
+
+	for (i = 0; i < pool->hpo_dp_stream_enc_count; i++) {
+		if (!res_ctx->is_hpo_dp_stream_enc_acquired[i] &&
+				pool->hpo_dp_stream_enc[i]) {
+
+			return pool->hpo_dp_stream_enc[i];
+		}
+	}
+
+	return NULL;
+}
+#endif
+
 static struct audio *find_first_free_audio(
 		struct resource_context *res_ctx,
 		const struct resource_pool *pool,
@@ -1799,6 +1859,15 @@ enum dc_status dc_remove_stream_from_ctx(
 	if (dc->res_pool->funcs->link_enc_unassign)
 		dc->res_pool->funcs->link_enc_unassign(new_ctx, del_pipe->stream);
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (is_dp_128b_132b_signal(del_pipe)) {
+		update_hpo_dp_stream_engine_usage(
+			&new_ctx->res_ctx, dc->res_pool,
+			del_pipe->stream_res.hpo_dp_stream_enc,
+			false);
+	}
+#endif
+
 	if (del_pipe->stream_res.audio)
 		update_audio_usage(
 			&new_ctx->res_ctx,
@@ -2051,6 +2120,31 @@ enum dc_status resource_map_pool_resources(
 		pipe_ctx->stream_res.stream_enc,
 		true);
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	/* Allocate DP HPO Stream Encoder based on signal, hw capabilities
+	 * and link settings
+	 */
+	if (dc_is_dp_signal(stream->signal) &&
+			dc->caps.dp_hpo) {
+		struct dc_link_settings link_settings = {0};
+
+		decide_link_settings(stream, &link_settings);
+		if (dp_get_link_encoding_format(&link_settings) == DP_128b_132b_ENCODING) {
+			pipe_ctx->stream_res.hpo_dp_stream_enc =
+					find_first_free_match_hpo_dp_stream_enc_for_link(
+							&context->res_ctx, pool, stream);
+
+			if (!pipe_ctx->stream_res.hpo_dp_stream_enc)
+				return DC_NO_STREAM_ENC_RESOURCE;
+
+			update_hpo_dp_stream_engine_usage(
+					&context->res_ctx, pool,
+					pipe_ctx->stream_res.hpo_dp_stream_enc,
+					true);
+		}
+	}
+#endif
+
 	/* TODO: Add check if ASIC support and EDID audio */
 	if (!stream->converter_disable_audio &&
 	    dc_is_audio_capable_signal(pipe_ctx->stream->signal) &&
@@ -2726,6 +2820,11 @@ bool pipe_need_reprogram(
 	if (pipe_ctx_old->stream_res.dsc != pipe_ctx->stream_res.dsc)
 		return true;
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (pipe_ctx_old->stream_res.hpo_dp_stream_enc != pipe_ctx->stream_res.hpo_dp_stream_enc)
+		return true;
+#endif
+
 	/* DIG link encoder resource assignment for stream changed. */
 	if (pipe_ctx_old->stream->link_enc != pipe_ctx->stream->link_enc)
 		return true;
@@ -2975,3 +3074,22 @@ void get_audio_check(struct audio_info *aud_modes,
 	}
 }
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+struct hpo_dp_link_encoder *resource_get_unused_hpo_dp_link_encoder(
+		const struct resource_pool *pool)
+{
+	uint8_t i;
+	struct hpo_dp_link_encoder *enc = NULL;
+
+	ASSERT(pool->hpo_dp_link_enc_count <= MAX_HPO_DP2_LINK_ENCODERS);
+
+	for (i = 0; i < pool->hpo_dp_link_enc_count; i++) {
+		if (pool->hpo_dp_link_enc[i]->transmitter == TRANSMITTER_UNKNOWN) {
+			enc = pool->hpo_dp_link_enc[i];
+			break;
+		}
+	}
+
+	return enc;
+}
+#endif

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

@@ -183,6 +183,9 @@ struct dc_caps {
 	unsigned int cursor_cache_size;
 	struct dc_plane_cap planes[MAX_PLANES];
 	struct dc_color_caps color;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	bool dp_hpo;
+#endif
 	bool vbios_lttpr_aware;
 	bool vbios_lttpr_enable;
 };
@@ -289,7 +292,15 @@ struct dc_cap_funcs {
 
 struct link_training_settings;
 
-
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+union allow_lttpr_non_transparent_mode {
+	struct {
+		bool DP1_4A : 1;
+		bool DP2_0 : 1;
+	} bits;
+	unsigned char raw;
+};
+#endif
 /* Structure to hold configuration flags set by dm at dc creation. */
 struct dc_config {
 	bool gpu_vm_support;
@@ -302,7 +313,11 @@ struct dc_config {
 	bool edp_no_power_sequencing;
 	bool force_enum_edp;
 	bool forced_clocks;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	union allow_lttpr_non_transparent_mode allow_lttpr_non_transparent_mode;
+#else
 	bool allow_lttpr_non_transparent_mode;
+#endif
 	bool multi_mon_pp_mclk_switch;
 	bool disable_dmcu;
 	bool enable_4to1MPC;
@@ -614,6 +629,10 @@ struct dc_debug_options {
 	bool enable_dmcub_surface_flip;
 	bool usbc_combo_phy_reset_wa;
 	bool enable_dram_clock_change_one_display_vactive;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	/* TODO - remove once tested */
+	bool legacy_dp2_lt;
+#endif
 	union mem_low_power_enable_options enable_mem_low_power;
 	bool force_vblank_alignment;
 
@@ -1146,6 +1165,12 @@ struct dpcd_caps {
 	struct dc_lttpr_caps lttpr_caps;
 	struct psr_caps psr_caps;
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	union dp_128b_132b_supported_link_rates dp_128b_132b_supported_link_rates;
+	union dp_main_line_channel_coding_cap channel_coding_cap;
+	union dp_sink_video_fallback_formats fallback_formats;
+	union dp_fec_capability1 fec_cap1;
+#endif
 };
 
 union dpcd_sink_ext_caps {

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

@@ -53,7 +53,17 @@ enum dc_link_rate {
 	LINK_RATE_RBR2 = 0x0C,		// Rate_5 (RBR2)- 3.24 Gbps/Lane
 	LINK_RATE_RATE_6 = 0x10,	// Rate_6		- 4.32 Gbps/Lane
 	LINK_RATE_HIGH2 = 0x14,		// Rate_7 (HBR2)- 5.40 Gbps/Lane
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	LINK_RATE_HIGH3 = 0x1E,		// Rate_8 (HBR3)- 8.10 Gbps/Lane
+	/* Starting from DP2.0 link rate enum directly represents actual
+	 * link rate value in unit of 10 mbps
+	 */
+	LINK_RATE_UHBR10 = 1000,	// UHBR10 - 10.0 Gbps/Lane
+	LINK_RATE_UHBR13_5 = 1350,	// UHBR13.5 - 13.5 Gbps/Lane
+	LINK_RATE_UHBR20 = 2000,	// UHBR10 - 20.0 Gbps/Lane
+#else
 	LINK_RATE_HIGH3 = 0x1E		// Rate_8 (HBR3)- 8.10 Gbps/Lane
+#endif
 };
 
 enum dc_link_spread {
@@ -90,17 +100,47 @@ enum dc_post_cursor2 {
 	POST_CURSOR2_MAX_LEVEL = POST_CURSOR2_LEVEL3,
 };
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+enum dc_dp_ffe_preset_level {
+	DP_FFE_PRESET_LEVEL0 = 0,
+	DP_FFE_PRESET_LEVEL1,
+	DP_FFE_PRESET_LEVEL2,
+	DP_FFE_PRESET_LEVEL3,
+	DP_FFE_PRESET_LEVEL4,
+	DP_FFE_PRESET_LEVEL5,
+	DP_FFE_PRESET_LEVEL6,
+	DP_FFE_PRESET_LEVEL7,
+	DP_FFE_PRESET_LEVEL8,
+	DP_FFE_PRESET_LEVEL9,
+	DP_FFE_PRESET_LEVEL10,
+	DP_FFE_PRESET_LEVEL11,
+	DP_FFE_PRESET_LEVEL12,
+	DP_FFE_PRESET_LEVEL13,
+	DP_FFE_PRESET_LEVEL14,
+	DP_FFE_PRESET_LEVEL15,
+	DP_FFE_PRESET_MAX_LEVEL = DP_FFE_PRESET_LEVEL15,
+};
+#endif
+
 enum dc_dp_training_pattern {
 	DP_TRAINING_PATTERN_SEQUENCE_1 = 0,
 	DP_TRAINING_PATTERN_SEQUENCE_2,
 	DP_TRAINING_PATTERN_SEQUENCE_3,
 	DP_TRAINING_PATTERN_SEQUENCE_4,
 	DP_TRAINING_PATTERN_VIDEOIDLE,
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	DP_128b_132b_TPS1,
+	DP_128b_132b_TPS2,
+	DP_128b_132b_TPS2_CDS,
+#endif
 };
 
 enum dp_link_encoding {
 	DP_UNKNOWN_ENCODING = 0,
 	DP_8b_10b_ENCODING = 1,
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	DP_128b_132b_ENCODING = 2,
+#endif
 };
 
 struct dc_link_settings {
@@ -112,10 +152,26 @@ struct dc_link_settings {
 	bool dpcd_source_device_specific_field_support;
 };
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+union dc_dp_ffe_preset {
+	struct {
+		uint8_t level		: 4;
+		uint8_t reserved	: 1;
+		uint8_t no_preshoot	: 1;
+		uint8_t no_deemphasis	: 1;
+		uint8_t method2		: 1;
+	} settings;
+	uint8_t raw;
+};
+#endif
+
 struct dc_lane_settings {
 	enum dc_voltage_swing VOLTAGE_SWING;
 	enum dc_pre_emphasis PRE_EMPHASIS;
 	enum dc_post_cursor2 POST_CURSOR2;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	union dc_dp_ffe_preset FFE_PRESET;
+#endif
 };
 
 struct dc_link_training_settings {
@@ -127,6 +183,9 @@ struct dc_link_training_overrides {
 	enum dc_voltage_swing *voltage_swing;
 	enum dc_pre_emphasis *pre_emphasis;
 	enum dc_post_cursor2 *post_cursor2;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	union dc_dp_ffe_preset *ffe_preset;
+#endif
 
 	uint16_t *cr_pattern_time;
 	uint16_t *eq_pattern_time;
@@ -140,6 +199,16 @@ struct dc_link_training_overrides {
 	bool *fec_enable;
 };
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+union payload_table_update_status {
+	struct {
+		uint8_t  VC_PAYLOAD_TABLE_UPDATED:1;
+		uint8_t  ACT_HANDLED:1;
+	} bits;
+	uint8_t  raw;
+};
+#endif
+
 union dpcd_rev {
 	struct {
 		uint8_t MINOR:4;
@@ -227,7 +296,14 @@ union lane_align_status_updated {
 	struct {
 		uint8_t INTERLANE_ALIGN_DONE:1;
 		uint8_t POST_LT_ADJ_REQ_IN_PROGRESS:1;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+		uint8_t EQ_INTERLANE_ALIGN_DONE_128b_132b:1;
+		uint8_t CDS_INTERLANE_ALIGN_DONE_128b_132b:1;
+		uint8_t LT_FAILED_128b_132b:1;
+		uint8_t RESERVED:1;
+#else
 		uint8_t RESERVED:4;
+#endif
 		uint8_t DOWNSTREAM_PORT_STATUS_CHANGED:1;
 		uint8_t LINK_STATUS_UPDATED:1;
 	} bits;
@@ -240,6 +316,12 @@ union lane_adjust {
 		uint8_t PRE_EMPHASIS_LANE:2;
 		uint8_t RESERVED:4;
 	} bits;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct {
+		uint8_t PRESET_VALUE	:4;
+		uint8_t RESERVED	:4;
+	} tx_ffe;
+#endif
 	uint8_t raw;
 };
 
@@ -269,6 +351,12 @@ union dpcd_training_lane {
 		uint8_t MAX_PRE_EMPHASIS_REACHED:1;
 		uint8_t RESERVED:2;
 	} bits;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct {
+		uint8_t PRESET_VALUE	:4;
+		uint8_t RESERVED	:4;
+	} tx_ffe;
+#endif
 	uint8_t raw;
 };
 
@@ -551,12 +639,18 @@ union test_response {
 
 union phy_test_pattern {
 	struct {
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+		/* This field is 7 bits for DP2.0 */
+		uint8_t PATTERN     :7;
+		uint8_t RESERVED    :1;
+#else
 		/* DpcdPhyTestPatterns. This field is 2 bits for DP1.1
 		 * and 3 bits for DP1.2.
 		 */
 		uint8_t PATTERN     :3;
 		/* BY speci, bit7:2 is 0 for DP1.1. */
 		uint8_t RESERVED    :5;
+#endif
 	} bits;
 	uint8_t raw;
 };
@@ -634,7 +728,14 @@ union dpcd_fec_capability {
 		uint8_t UNCORRECTED_BLOCK_ERROR_COUNT_CAPABLE:1;
 		uint8_t CORRECTED_BLOCK_ERROR_COUNT_CAPABLE:1;
 		uint8_t BIT_ERROR_COUNT_CAPABLE:1;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+		uint8_t PARITY_BLOCK_ERROR_COUNT_CAPABLE:1;
+		uint8_t ARITY_BIT_ERROR_COUNT_CAPABLE:1;
+		uint8_t FEC_RUNNING_INDICATOR_SUPPORTED:1;
+		uint8_t FEC_ERROR_REPORTING_POLICY_SUPPORTED:1;
+#else
 		uint8_t RESERVED:4;
+#endif
 	} bits;
 	uint8_t raw;
 };
@@ -758,4 +859,125 @@ struct psr_caps {
 	bool psr_exit_link_training_required;
 };
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+#define DP_MAIN_LINK_CHANNEL_CODING_CAP			0x006
+#define DP_SINK_VIDEO_FALLBACK_FORMATS			0x020
+#define DP_FEC_CAPABILITY_1				0x091
+#define DP_DFP_CAPABILITY_EXTENSION_SUPPORT		0x0A3
+#define DP_DSC_CONFIGURATION				0x161
+#define DP_PHY_SQUARE_PATTERN				0x249
+#define DP_128b_132b_SUPPORTED_LINK_RATES		0x2215
+#define DP_128b_132b_TRAINING_AUX_RD_INTERVAL		0x2216
+#define DP_TEST_264BIT_CUSTOM_PATTERN_7_0		0X2230
+#define DP_TEST_264BIT_CUSTOM_PATTERN_263_256		0X2250
+#define DP_DSC_SUPPORT_AND_DECODER_COUNT		0x2260
+#define DP_DSC_MAX_SLICE_COUNT_AND_AGGREGATION_0	0x2270
+# define DP_DSC_DECODER_0_MAXIMUM_SLICE_COUNT_MASK	(1 << 0)
+# define DP_DSC_DECODER_0_AGGREGATION_SUPPORT_MASK	(0b111 << 1)
+# define DP_DSC_DECODER_0_AGGREGATION_SUPPORT_SHIFT	1
+# define DP_DSC_DECODER_COUNT_MASK			(0b111 << 5)
+# define DP_DSC_DECODER_COUNT_SHIFT			5
+#define DP_MAIN_LINK_CHANNEL_CODING_SET			0x108
+#define DP_MAIN_LINK_CHANNEL_CODING_PHY_REPEATER	0xF0006
+#define DP_PHY_REPEATER_128b_132b_RATES			0xF0007
+#define DP_128b_132b_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1	0xF0022
+#define DP_INTRA_HOP_AUX_REPLY_INDICATION		(1 << 3)
+/* TODO - Use DRM header to replace above once available */
+
+union dp_main_line_channel_coding_cap {
+	struct {
+		uint8_t DP_8b_10b_SUPPORTED	:1;
+		uint8_t DP_128b_132b_SUPPORTED	:1;
+		uint8_t RESERVED		:6;
+	} bits;
+	uint8_t raw;
+};
+
+union dp_main_link_channel_coding_lttpr_cap {
+	struct {
+		uint8_t DP_128b_132b_SUPPORTED	:1;
+		uint8_t RESERVED		:7;
+	} bits;
+	uint8_t raw;
+};
+
+union dp_128b_132b_supported_link_rates {
+	struct {
+		uint8_t UHBR10	:1;
+		uint8_t UHBR20	:1;
+		uint8_t UHBR13_5:1;
+		uint8_t RESERVED:5;
+	} bits;
+	uint8_t raw;
+};
+
+union dp_128b_132b_supported_lttpr_link_rates {
+	struct {
+		uint8_t UHBR10	:1;
+		uint8_t UHBR13_5:1;
+		uint8_t UHBR20	:1;
+		uint8_t RESERVED:5;
+	} bits;
+	uint8_t raw;
+};
+
+union dp_sink_video_fallback_formats {
+	struct {
+		uint8_t dp_1024x768_60Hz_24bpp_support	:1;
+		uint8_t dp_1280x720_60Hz_24bpp_support	:1;
+		uint8_t dp_1920x1080_60Hz_24bpp_support	:1;
+		uint8_t RESERVED			:5;
+	} bits;
+	uint8_t raw;
+};
+
+union dp_fec_capability1 {
+	struct {
+		uint8_t AGGREGATED_ERROR_COUNTERS_CAPABLE	:1;
+		uint8_t RESERVED				:7;
+	} bits;
+	uint8_t raw;
+};
+
+struct dp_color_depth_caps {
+	uint8_t support_6bpc	:1;
+	uint8_t support_8bpc	:1;
+	uint8_t support_10bpc	:1;
+	uint8_t support_12bpc	:1;
+	uint8_t support_16bpc	:1;
+	uint8_t RESERVED	:3;
+};
+
+struct dp_encoding_format_caps {
+	uint8_t support_rgb	:1;
+	uint8_t support_ycbcr444:1;
+	uint8_t support_ycbcr422:1;
+	uint8_t support_ycbcr420:1;
+	uint8_t RESERVED	:4;
+};
+
+union dp_dfp_cap_ext {
+	struct {
+		uint8_t supported;
+		uint8_t max_pixel_rate_in_mps[2];
+		uint8_t max_video_h_active_width[2];
+		uint8_t max_video_v_active_height[2];
+		struct dp_encoding_format_caps encoding_format_caps;
+		struct dp_color_depth_caps rgb_color_depth_caps;
+		struct dp_color_depth_caps ycbcr444_color_depth_caps;
+		struct dp_color_depth_caps ycbcr422_color_depth_caps;
+		struct dp_color_depth_caps ycbcr420_color_depth_caps;
+	} fields;
+	uint8_t raw[12];
+};
+
+union dp_128b_132b_training_aux_rd_interval {
+	struct {
+		uint8_t VALUE	:7;
+		uint8_t UNIT	:1;
+	} bits;
+	uint8_t raw;
+};
+#endif
+
 #endif /* DC_DP_TYPES_H */

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

@@ -154,6 +154,9 @@ struct dc_link {
 
 	struct panel_cntl *panel_cntl;
 	struct link_encoder *link_enc;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct hpo_dp_link_encoder *hpo_dp_link_enc;
+#endif
 	struct graphics_object_id link_id;
 	/* Endpoint type distinguishes display endpoints which do not have entries
 	 * in the BIOS connector table from those that do. Helps when tracking link

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

@@ -395,9 +395,27 @@ struct dc_lttpr_caps {
 	uint8_t max_link_rate;
 	uint8_t phy_repeater_cnt;
 	uint8_t max_ext_timeout;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	union dp_main_link_channel_coding_lttpr_cap main_link_channel_coding;
+	union dp_128b_132b_supported_lttpr_link_rates supported_128b_132b_rates;
+#endif
 	uint8_t aux_rd_interval[MAX_REPEATER_CNT - 1];
 };
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+struct dc_dongle_dfp_cap_ext {
+	bool supported;
+	uint16_t max_pixel_rate_in_mps;
+	uint16_t max_video_h_active_width;
+	uint16_t max_video_v_active_height;
+	struct dp_encoding_format_caps encoding_format_caps;
+	struct dp_color_depth_caps rgb_color_depth_caps;
+	struct dp_color_depth_caps ycbcr444_color_depth_caps;
+	struct dp_color_depth_caps ycbcr422_color_depth_caps;
+	struct dp_color_depth_caps ycbcr420_color_depth_caps;
+};
+#endif
+
 struct dc_dongle_caps {
 	/* dongle type (DP converter, CV smart dongle) */
 	enum display_dongle_type dongle_type;
@@ -411,6 +429,9 @@ struct dc_dongle_caps {
 	bool is_dp_hdmi_ycbcr420_converter;
 	uint32_t dp_hdmi_max_bpc;
 	uint32_t dp_hdmi_max_pixel_clk_in_khz;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	struct dc_dongle_dfp_cap_ext dfp_cap_ext;
+#endif
 };
 /* Scaling format */
 enum scaling_transformation {

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -1108,8 +1108,17 @@ void dce110_enable_audio_stream(struct pipe_ctx *pipe_ctx)
 			clk_mgr->funcs->enable_pme_wa(clk_mgr);
 		/* un-mute audio */
 		/* TODO: audio should be per stream rather than per link */
-		pipe_ctx->stream_res.stream_enc->funcs->audio_mute_control(
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+		if (is_dp_128b_132b_signal(pipe_ctx))
+			pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->audio_mute_control(
+					pipe_ctx->stream_res.hpo_dp_stream_enc, false);
+		else
+			pipe_ctx->stream_res.stream_enc->funcs->audio_mute_control(
 					pipe_ctx->stream_res.stream_enc, false);
+#else
+		pipe_ctx->stream_res.stream_enc->funcs->audio_mute_control(
+				pipe_ctx->stream_res.stream_enc, false);
+#endif
 		if (pipe_ctx->stream_res.audio)
 			pipe_ctx->stream_res.audio->enabled = true;
 	}
@@ -1129,14 +1138,32 @@ void dce110_disable_audio_stream(struct pipe_ctx *pipe_ctx)
 	if (pipe_ctx->stream_res.audio && pipe_ctx->stream_res.audio->enabled == false)
 		return;
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (is_dp_128b_132b_signal(pipe_ctx))
+		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->audio_mute_control(
+				pipe_ctx->stream_res.hpo_dp_stream_enc, true);
+	else
+		pipe_ctx->stream_res.stream_enc->funcs->audio_mute_control(
+				pipe_ctx->stream_res.stream_enc, true);
+#else
 	pipe_ctx->stream_res.stream_enc->funcs->audio_mute_control(
 			pipe_ctx->stream_res.stream_enc, true);
+#endif
 	if (pipe_ctx->stream_res.audio) {
 		pipe_ctx->stream_res.audio->enabled = false;
 
 		if (dc_is_dp_signal(pipe_ctx->stream->signal))
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+			if (is_dp_128b_132b_signal(pipe_ctx))
+				pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_audio_disable(
+						pipe_ctx->stream_res.hpo_dp_stream_enc);
+			else
+				pipe_ctx->stream_res.stream_enc->funcs->dp_audio_disable(
+						pipe_ctx->stream_res.stream_enc);
+#else
 			pipe_ctx->stream_res.stream_enc->funcs->dp_audio_disable(
 					pipe_ctx->stream_res.stream_enc);
+#endif
 		else
 			pipe_ctx->stream_res.stream_enc->funcs->hdmi_audio_disable(
 					pipe_ctx->stream_res.stream_enc);
@@ -1166,16 +1193,37 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx)
 			pipe_ctx->stream_res.stream_enc);
 	}
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (is_dp_128b_132b_signal(pipe_ctx)) {
+		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->stop_dp_info_packets(
+					pipe_ctx->stream_res.hpo_dp_stream_enc);
+	} else if (dc_is_dp_signal(pipe_ctx->stream->signal))
+#else
 	if (dc_is_dp_signal(pipe_ctx->stream->signal))
+#endif
 		pipe_ctx->stream_res.stream_enc->funcs->stop_dp_info_packets(
 			pipe_ctx->stream_res.stream_enc);
 
 	dc->hwss.disable_audio_stream(pipe_ctx);
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (is_dp_128b_132b_signal(pipe_ctx)) {
+		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->disable(
+				pipe_ctx->stream_res.hpo_dp_stream_enc);
+		setup_dp_hpo_stream(pipe_ctx, false);
+	/* TODO - DP2.0 HW: unmap stream from link encoder here */
+	} else {
+		link->link_enc->funcs->connect_dig_be_to_fe(
+				link->link_enc,
+				pipe_ctx->stream_res.stream_enc->id,
+				false);
+	}
+#else
 	link->link_enc->funcs->connect_dig_be_to_fe(
 			link->link_enc,
 			pipe_ctx->stream_res.stream_enc->id,
 			false);
+#endif
 
 }
 
@@ -1210,7 +1258,15 @@ void dce110_blank_stream(struct pipe_ctx *pipe_ctx)
 		link->dc->hwss.set_abm_immediate_disable(pipe_ctx);
 	}
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (is_dp_128b_132b_signal(pipe_ctx)) {
+		/* TODO - DP2.0 HW: Set ODM mode in dp hpo encoder here */
+		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_blank(
+				pipe_ctx->stream_res.hpo_dp_stream_enc);
+	} else if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
+#else
 	if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
+#endif
 		pipe_ctx->stream_res.stream_enc->funcs->dp_blank(pipe_ctx->stream_res.stream_enc);
 
 		if (!dc_is_embedded_signal(pipe_ctx->stream->signal)) {
@@ -1451,10 +1507,23 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 		build_audio_output(context, pipe_ctx, &audio_output);
 
 		if (dc_is_dp_signal(pipe_ctx->stream->signal))
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+			if (is_dp_128b_132b_signal(pipe_ctx))
+				pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_audio_setup(
+						pipe_ctx->stream_res.hpo_dp_stream_enc,
+						pipe_ctx->stream_res.audio->inst,
+						&pipe_ctx->stream->audio_info);
+			else
+				pipe_ctx->stream_res.stream_enc->funcs->dp_audio_setup(
+						pipe_ctx->stream_res.stream_enc,
+						pipe_ctx->stream_res.audio->inst,
+						&pipe_ctx->stream->audio_info);
+#else
 			pipe_ctx->stream_res.stream_enc->funcs->dp_audio_setup(
 					pipe_ctx->stream_res.stream_enc,
 					pipe_ctx->stream_res.audio->inst,
 					&pipe_ctx->stream->audio_info);
+#endif
 		else
 			pipe_ctx->stream_res.stream_enc->funcs->hdmi_audio_setup(
 					pipe_ctx->stream_res.stream_enc,
@@ -1469,10 +1538,18 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 				&pipe_ctx->stream->audio_info);
 	}
 
-	/*  */
-	/* Do not touch stream timing on seamless boot optimization. */
-	if (!pipe_ctx->stream->apply_seamless_boot_optimization)
-		hws->funcs.enable_stream_timing(pipe_ctx, context, dc);
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	/* DCN3.1 FPGA Workaround
+	 * Need to enable HPO DP Stream Encoder before setting OTG master enable.
+	 * To do so, move calling function enable_stream_timing to only be done AFTER calling
+	 * function core_link_enable_stream
+	 */
+	if (!(hws->wa.dp_hpo_and_otg_sequence && is_dp_128b_132b_signal(pipe_ctx)))
+#endif
+		/*  */
+		/* Do not touch stream timing on seamless boot optimization. */
+		if (!pipe_ctx->stream->apply_seamless_boot_optimization)
+			hws->funcs.enable_stream_timing(pipe_ctx, context, dc);
 
 	if (hws->funcs.setup_vupdate_interrupt)
 		hws->funcs.setup_vupdate_interrupt(dc, pipe_ctx);
@@ -1526,6 +1603,18 @@ static enum dc_status apply_single_controller_ctx_to_hw(
 	if (!stream->dpms_off)
 		core_link_enable_stream(context, pipe_ctx);
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	/* DCN3.1 FPGA Workaround
+	 * Need to enable HPO DP Stream Encoder before setting OTG master enable.
+	 * To do so, move calling function enable_stream_timing to only be done AFTER calling
+	 * function core_link_enable_stream
+	 */
+	if (hws->wa.dp_hpo_and_otg_sequence && is_dp_128b_132b_signal(pipe_ctx)) {
+		if (!pipe_ctx->stream->apply_seamless_boot_optimization)
+			hws->funcs.enable_stream_timing(pipe_ctx, context, dc);
+	}
+#endif
+
 	pipe_ctx->plane_res.scl_data.lb_params.alpha_en = pipe_ctx->bottom_pipe != 0;
 
 	pipe_ctx->stream->link->psr_settings.psr_feature_enabled = false;

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c

@@ -1460,5 +1460,14 @@ void dcn10_link_encoder_get_max_link_cap(struct link_encoder *enc,
 	if (enc->features.flags.bits.IS_HBR3_CAPABLE)
 		max_link_cap.link_rate = LINK_RATE_HIGH3;
 
+	if (enc->features.flags.bits.IS_UHBR10_CAPABLE)
+		max_link_cap.link_rate = LINK_RATE_UHBR10;
+
+	if (enc->features.flags.bits.IS_UHBR13_5_CAPABLE)
+		max_link_cap.link_rate = LINK_RATE_UHBR13_5;
+
+	if (enc->features.flags.bits.IS_UHBR20_CAPABLE)
+		max_link_cap.link_rate = LINK_RATE_UHBR20;
+
 	*link_settings = max_link_cap;
 }

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

@@ -2135,7 +2135,12 @@ void dcn20_unblank_stream(struct pipe_ctx *pipe_ctx,
 
 	params.link_settings.link_rate = link_settings->link_rate;
 
-	if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
+	if (is_dp_128b_132b_signal(pipe_ctx)) {
+		/* TODO - DP2.0 HW: Set ODM mode in dp hpo encoder here */
+		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_unblank(
+				pipe_ctx->stream_res.hpo_dp_stream_enc,
+				pipe_ctx->stream_res.tg->inst);
+	} else if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
 		if (optc2_is_two_pixels_per_containter(&stream->timing) || params.opp_cnt > 1)
 			params.timing.pix_clk_100hz /= 2;
 		pipe_ctx->stream_res.stream_enc->funcs->dp_set_odm_combine(
@@ -2380,8 +2385,19 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 	 * disconnect them during disable_stream
 	 * BY this, it is logic clean to separate stream and link
 	 */
-	link->link_enc->funcs->connect_dig_be_to_fe(link->link_enc,
-						    pipe_ctx->stream_res.stream_enc->id, true);
+	if (is_dp_128b_132b_signal(pipe_ctx)) {
+		setup_dp_hpo_stream(pipe_ctx, true);
+		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->enable_stream(
+				pipe_ctx->stream_res.hpo_dp_stream_enc);
+		pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->map_stream_to_link(
+				pipe_ctx->stream_res.hpo_dp_stream_enc,
+				pipe_ctx->stream_res.hpo_dp_stream_enc->inst,
+				link->hpo_dp_link_enc->inst);
+	}
+
+	if (!is_dp_128b_132b_signal(pipe_ctx))
+		link->link_enc->funcs->connect_dig_be_to_fe(
+			link->link_enc, pipe_ctx->stream_res.stream_enc->id, true);
 
 	if (pipe_ctx->plane_state && pipe_ctx->plane_state->flip_immediate != 1) {
 		if (link->dc->hwss.program_dmdata_engine)
@@ -2406,7 +2422,9 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 
 	/* enable audio only within mode set */
 	if (pipe_ctx->stream_res.audio != NULL) {
-		if (dc_is_dp_signal(pipe_ctx->stream->signal))
+		if (is_dp_128b_132b_signal(pipe_ctx))
+			pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_audio_enable(pipe_ctx->stream_res.hpo_dp_stream_enc);
+		else if (dc_is_dp_signal(pipe_ctx->stream->signal))
 			pipe_ctx->stream_res.stream_enc->funcs->dp_audio_enable(pipe_ctx->stream_res.stream_enc);
 	}
 }

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

@@ -63,6 +63,7 @@
 #include "dcn20_dccg.h"
 #include "dcn20_vmid.h"
 #include "dc_link_ddc.h"
+#include "dc_link_dp.h"
 #include "dce/dce_panel_cntl.h"
 
 #include "navi10_ip_offset.h"
@@ -1604,6 +1605,7 @@ static void get_pixel_clock_parameters(
 	pixel_clk_params->signal_type = pipe_ctx->stream->signal;
 	pixel_clk_params->controller_id = pipe_ctx->stream_res.tg->inst + 1;
 	/* TODO: un-hardcode*/
+	/* TODO - DP2.0 HW: calculate requested_sym_clk for UHBR rates */
 	pixel_clk_params->requested_sym_clk = LINK_RATE_LOW *
 		LINK_RATE_REF_FREQ_IN_KHZ;
 	pixel_clk_params->flags.ENABLE_SS = 0;
@@ -3044,6 +3046,8 @@ static bool is_dtbclk_required(struct dc *dc, struct dc_state *context)
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
 		if (!context->res_ctx.pipe_ctx[i].stream)
 			continue;
+		if (is_dp_128b_132b_signal(&context->res_ctx.pipe_ctx[i]))
+			return true;
 	}
 	return false;
 }

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c

@@ -561,11 +561,6 @@ static const struct dcn10_link_enc_mask le_mask = {
 	DPCS_DCN31_MASK_SH_LIST(_MASK)
 };
 
-#define dpp_regs(id)\
-[id] = {\
-	DPP_REG_LIST_DCN30(id),\
-}
-
 #define hpo_dp_stream_encoder_reg_list(id)\
 [id] = {\
 	DCN3_1_HPO_DP_STREAM_ENC_REG_LIST(id)\
@@ -609,6 +604,11 @@ static const struct dcn31_hpo_dp_link_encoder_mask hpo_dp_le_mask = {
 	DCN3_1_HPO_DP_LINK_ENC_MASK_SH_LIST(_MASK)
 };
 
+#define dpp_regs(id)\
+[id] = {\
+	DPP_REG_LIST_DCN30(id),\
+}
+
 static const struct dcn3_dpp_registers dpp_regs[] = {
 	dpp_regs(0),
 	dpp_regs(1),
@@ -1449,6 +1449,13 @@ static struct dce_hwseq *dcn31_hwseq_create(
 		hws->regs = &hwseq_reg;
 		hws->shifts = &hwseq_shift;
 		hws->masks = &hwseq_mask;
+		/* DCN3.1 FPGA Workaround
+		 * Need to enable HPO DP Stream Encoder before setting OTG master enable.
+		 * To do so, move calling function enable_stream_timing to only be done AFTER calling
+		 * function core_link_enable_stream
+		 */
+		if (IS_FPGA_MAXIMUS_DC(ctx->dce_environment))
+			hws->wa.dp_hpo_and_otg_sequence = true;
 	}
 	return hws;
 }
@@ -2102,6 +2109,7 @@ static bool dcn31_resource_construct(
 	dc->caps.max_slave_rgb_planes = 1;
 	dc->caps.post_blend_color_processing = true;
 	dc->caps.force_dp_tps4_for_cp2520 = true;
+	dc->caps.dp_hpo = true;
 	dc->caps.extended_aux_timeout_support = true;
 	dc->caps.dmcub_support = true;
 	dc->caps.is_apu = true;

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

@@ -37,6 +37,7 @@ struct cp_psp_stream_config {
 	uint8_t phy_idx;
 	uint8_t assr_enabled;
 	uint8_t mst_enabled;
+	uint8_t dp2_enabled;
 	void *dm_stream_ctx;
 	bool dpms_off;
 };

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

@@ -160,6 +160,8 @@ void dm_set_dcn_clocks(
 		struct dc_context *ctx,
 		struct dc_clocks *clks);
 
+void dm_set_phyd32clk(struct dc_context *ctx, int freq_khz);
+
 bool dm_helpers_dmub_outbox_interrupt_control(struct dc_context *ctx, bool enable);
 
 void dm_helpers_smu_timeout(struct dc_context *ctx, unsigned int msg_id, unsigned int param, unsigned int timeout_us);

drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h

@@ -30,6 +30,7 @@
 #define LINK_TRAINING_RETRY_DELAY 50 /* ms */
 #define LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD 3200 /*us*/
 #define LINK_AUX_DEFAULT_TIMEOUT_PERIOD 552 /*us*/
+#define MAX_MTP_SLOT_COUNT 64
 #define DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE 0x50
 #define TRAINING_AUX_RD_INTERVAL 100 //us
 
@@ -189,5 +190,26 @@ enum dc_status dpcd_configure_lttpr_mode(
 		struct link_training_settings *lt_settings);
 
 enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings);
+bool dpcd_write_128b_132b_sst_payload_allocation_table(
+		const struct dc_stream_state *stream,
+		struct dc_link *link,
+		struct link_mst_stream_allocation_table *proposed_table,
+		bool allocate);
+
+enum dc_status dpcd_configure_channel_coding(
+		struct dc_link *link,
+		struct link_training_settings *lt_settings);
+
+bool dpcd_poll_for_allocation_change_trigger(struct dc_link *link);
+
+struct fixed31_32 calculate_sst_avg_time_slots_per_mtp(
+		const struct dc_stream_state *stream,
+		const struct dc_link *link);
+void enable_dp_hpo_output(struct dc_link *link, const struct dc_link_settings *link_settings);
+void disable_dp_hpo_output(struct dc_link *link, enum signal_type signal);
+void setup_dp_hpo_stream(struct pipe_ctx *pipe_ctx, bool enable);
+bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx);
+void reset_dp_hpo_stream_encoders_for_link(struct dc_link *link);
+
 bool dp_retrieve_lttpr_cap(struct dc_link *link);
 #endif /* __DC_LINK_DP_H__ */

drivers/gpu/drm/amd/display/dc/inc/hw_sequencer_private.h

@@ -41,6 +41,9 @@ struct dce_hwseq_wa {
 	bool DEGVIDCN10_254;
 	bool DEGVIDCN21;
 	bool disallow_self_refresh_during_multi_plane_transition;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	bool dp_hpo_and_otg_sequence;
+#endif
 };
 
 struct hwseq_wa_state {

drivers/gpu/drm/amd/display/dc/inc/resource.h

@@ -200,4 +200,9 @@ int get_num_mpc_splits(struct pipe_ctx *pipe);
 
 int get_num_odm_splits(struct pipe_ctx *pipe);
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+struct hpo_dp_link_encoder *resource_get_unused_hpo_dp_link_encoder(
+		const struct resource_pool *pool);
+#endif
+
 #endif /* DRIVERS_GPU_DRM_AMD_DC_DEV_DC_INC_RESOURCE_H_ */

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

@@ -80,6 +80,15 @@ enum dpcd_phy_test_patterns {
 	PHY_TEST_PATTERN_CP2520_1,
 	PHY_TEST_PATTERN_CP2520_2,
 	PHY_TEST_PATTERN_CP2520_3, /* same as TPS4 */
+	PHY_TEST_PATTERN_128b_132b_TPS1 = 0x8,
+	PHY_TEST_PATTERN_128b_132b_TPS2 = 0x10,
+	PHY_TEST_PATTERN_PRBS9 = 0x18,
+	PHY_TEST_PATTERN_PRBS11 = 0x20,
+	PHY_TEST_PATTERN_PRBS15 = 0x28,
+	PHY_TEST_PATTERN_PRBS23 = 0x30,
+	PHY_TEST_PATTERN_PRBS31 = 0x38,
+	PHY_TEST_PATTERN_264BIT_CUSTOM = 0x40,
+	PHY_TEST_PATTERN_SQUARE_PULSE = 0x48,
 };
 
 enum dpcd_test_dyn_range {
@@ -135,7 +144,14 @@ enum dpcd_training_patterns {
 	DPCD_TRAINING_PATTERN_1,
 	DPCD_TRAINING_PATTERN_2,
 	DPCD_TRAINING_PATTERN_3,
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	DPCD_TRAINING_PATTERN_4 = 7,
+	DPCD_128b_132b_TPS1 = 1,
+	DPCD_128b_132b_TPS2 = 2,
+	DPCD_128b_132b_TPS2_CDS = 3,
+#else
 	DPCD_TRAINING_PATTERN_4 = 7
+#endif
 };
 
 /* This enum is for use with PsrSinkPsrStatus.bits.sinkSelfRefreshStatus

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

@@ -53,7 +53,11 @@ enum edp_revision {
 };
 
 enum {
-	LINK_RATE_REF_FREQ_IN_KHZ = 27000 /*27MHz*/
+	LINK_RATE_REF_FREQ_IN_KHZ = 27000, /*27MHz*/
+	BITS_PER_DP_BYTE = 10,
+	DATA_EFFICIENCY_8b_10b_x10000 = 8000, /* 80% data efficiency */
+	DATA_EFFICIENCY_8b_10b_FEC_EFFICIENCY_x100 = 97, /* 97% data efficiency when FEC is enabled */
+	DATA_EFFICIENCY_128b_132b_x10000 = 9646, /* 96.71% data efficiency x 99.75% downspread factor */
 };
 
 enum link_training_result {
@@ -70,6 +74,12 @@ enum link_training_result {
 	LINK_TRAINING_LINK_LOSS,
 	/* Abort link training (because sink unplugged) */
 	LINK_TRAINING_ABORT,
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	DP_128b_132b_LT_FAILED,
+	DP_128b_132b_MAX_LOOP_COUNT_REACHED,
+	DP_128b_132b_CHANNEL_EQ_DONE_TIMEOUT,
+	DP_128b_132b_CDS_DONE_TIMEOUT,
+#endif
 };
 
 enum lttpr_mode {
@@ -86,11 +96,23 @@ struct link_training_settings {
 	enum dc_pre_emphasis *pre_emphasis;
 	enum dc_post_cursor2 *post_cursor2;
 	bool should_set_fec_ready;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	/* TODO - factor lane_settings out because it changes during LT */
+	union dc_dp_ffe_preset *ffe_preset;
+#endif
 
 	uint16_t cr_pattern_time;
 	uint16_t eq_pattern_time;
+	uint16_t cds_pattern_time;
 	enum dc_dp_training_pattern pattern_for_cr;
 	enum dc_dp_training_pattern pattern_for_eq;
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	enum dc_dp_training_pattern pattern_for_cds;
+
+	uint32_t eq_wait_time_limit;
+	uint8_t eq_loop_count_limit;
+	uint32_t cds_wait_time_limit;
+#endif
 
 	bool enhanced_framing;
 	bool allow_invalid_msa_timing_param;

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

@@ -72,6 +72,9 @@
 #define DC_LOG_DSC(...) DRM_DEBUG_KMS(__VA_ARGS__)
 #define DC_LOG_SMU(...) pr_debug("[SMU_MSG]:"__VA_ARGS__)
 #define DC_LOG_DWB(...) DRM_DEBUG_KMS(__VA_ARGS__)
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+#define DC_LOG_DP2(...) DRM_DEBUG_KMS(__VA_ARGS__)
+#endif
 
 struct dal_logger;
 
@@ -123,6 +126,9 @@ enum dc_log_type {
 	LOG_MAX_HW_POINTS,
 	LOG_ALL_TF_CHANNELS,
 	LOG_SAMPLE_1DLUT,
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	LOG_DP2,
+#endif
 	LOG_SECTION_TOTAL_COUNT
 };