Commit 460adc6b authored by abdoulaye berthe's avatar abdoulaye berthe Committed by Alex Deucher
Browse files

drm/amd/display: add log for lttpr 



Signed-off-by: default avatarabdoulaye berthe <abdoulaye.berthe@amd.com>
Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: default avatarLeo Li <sunpeng.li@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 769dbc16

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

+93 −32
Original line number Diff line number Diff line
@@ -255,11 +255,18 @@ static void dpcd_set_lt_pattern_and_lane_settings( 
	dpcd_lt_buffer[DP_TRAINING_PATTERN_SET - DP_TRAINING_PATTERN_SET]

		= dpcd_pattern.raw;



	if (is_repeater(link, offset)) {

		DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Repeater ID: %d\n 0x%X pattern = %x\n",

			__func__,

			offset,

			dpcd_base_lt_offset,

			dpcd_pattern.v1_4.TRAINING_PATTERN_SET);

	} else {

		DC_LOG_HW_LINK_TRAINING("%s\n 0x%X pattern = %x\n",

			__func__,

			dpcd_base_lt_offset,

			dpcd_pattern.v1_4.TRAINING_PATTERN_SET);



	}

	/*****************************************************************

	* DpcdAddress_Lane0Set -> DpcdAddress_Lane3Set

	*****************************************************************/
@@ -289,6 +296,17 @@ static void dpcd_set_lt_pattern_and_lane_settings( 
		dpcd_lane,

		size_in_bytes);



	if (is_repeater(link, offset)) {

		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"

				" 0x%X VS set = %x PE set = %x max VS Reached = %x  max PE Reached = %x\n",

			__func__,

			offset,

			dpcd_base_lt_offset,

			dpcd_lane[0].bits.VOLTAGE_SWING_SET,

			dpcd_lane[0].bits.PRE_EMPHASIS_SET,

			dpcd_lane[0].bits.MAX_SWING_REACHED,

			dpcd_lane[0].bits.MAX_PRE_EMPHASIS_REACHED);

	} else {

		DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",

			__func__,

			dpcd_base_lt_offset,
@@ -296,7 +314,7 @@ static void dpcd_set_lt_pattern_and_lane_settings( 
			dpcd_lane[0].bits.PRE_EMPHASIS_SET,

			dpcd_lane[0].bits.MAX_SWING_REACHED,

			dpcd_lane[0].bits.MAX_PRE_EMPHASIS_REACHED);



	}

	if (edp_workaround) {

		/* for eDP write in 2 parts because the 5-byte burst is

		* causing issues on some eDP panels (EPR#366724)
@@ -544,23 +562,42 @@ static void get_lane_status_and_drive_settings( 


	ln_status_updated->raw = dpcd_buf[2];



	if (is_repeater(link, offset)) {

		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"

				" 0x%X Lane01Status = %x\n 0x%X Lane23Status = %x\n ",

			__func__,

			offset,

			lane01_status_address, dpcd_buf[0],

			lane01_status_address + 1, dpcd_buf[1]);

	} else {

		DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X Lane01Status = %x\n 0x%X Lane23Status = %x\n ",

			__func__,

			lane01_status_address, dpcd_buf[0],

			lane01_status_address + 1, dpcd_buf[1]);



	}

	lane01_adjust_address = DP_ADJUST_REQUEST_LANE0_1;



	if (is_repeater(link, offset))

		lane01_adjust_address = DP_ADJUST_REQUEST_LANE0_1_PHY_REPEATER1 +

				((DP_REPEATER_CONFIGURATION_AND_STATUS_SIZE) * (offset - 1));



	if (is_repeater(link, offset)) {

		DC_LOG_HW_LINK_TRAINING("%s:\n LTTPR Repeater ID: %d\n"

				" 0x%X Lane01AdjustRequest = %x\n 0x%X Lane23AdjustRequest = %x\n",

					__func__,

					offset,

					lane01_adjust_address,

					dpcd_buf[lane_adjust_offset],

					lane01_adjust_address + 1,

					dpcd_buf[lane_adjust_offset + 1]);

	} else {

		DC_LOG_HW_LINK_TRAINING("%s:\n 0x%X Lane01AdjustRequest = %x\n 0x%X Lane23AdjustRequest = %x\n",

			__func__,

			lane01_adjust_address,

			dpcd_buf[lane_adjust_offset],

			lane01_adjust_address + 1,

			dpcd_buf[lane_adjust_offset + 1]);

	}



	/*copy to req_settings*/

	request_settings.link_settings.lane_count =
@@ -656,14 +693,26 @@ static void dpcd_set_lane_settings( 
	}

	*/



	DC_LOG_HW_LINK_TRAINING("%s\n 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",

	if (is_repeater(link, offset)) {

		DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Repeater ID: %d\n"

				" 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",

			__func__,

			offset,

			lane0_set_address,

			dpcd_lane[0].bits.VOLTAGE_SWING_SET,

			dpcd_lane[0].bits.PRE_EMPHASIS_SET,

			dpcd_lane[0].bits.MAX_SWING_REACHED,

			dpcd_lane[0].bits.MAX_PRE_EMPHASIS_REACHED);



	} else {

		DC_LOG_HW_LINK_TRAINING("%s\n 0x%X VS set = %x  PE set = %x max VS Reached = %x  max PE Reached = %x\n",

			__func__,

			lane0_set_address,

			dpcd_lane[0].bits.VOLTAGE_SWING_SET,

			dpcd_lane[0].bits.PRE_EMPHASIS_SET,

			dpcd_lane[0].bits.MAX_SWING_REACHED,

			dpcd_lane[0].bits.MAX_PRE_EMPHASIS_REACHED);

	}

	link->cur_lane_setting = link_training_setting->lane_settings[0];



}
@@ -1170,12 +1219,16 @@ static void configure_lttpr_mode(struct dc_link *link) 
	uint8_t repeater_id;

	uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;



	DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Non Transparent Mode\n", __func__);

	core_link_write_dpcd(link,

			DP_PHY_REPEATER_MODE,

			(uint8_t *)&repeater_mode,

			sizeof(repeater_mode));



	if (!link->is_lttpr_mode_transparent) {



		DC_LOG_HW_LINK_TRAINING("%s\n Set LTTPR to Transparent Mode\n", __func__);



		repeater_mode = DP_PHY_REPEATER_MODE_NON_TRANSPARENT;

		core_link_write_dpcd(link,

				DP_PHY_REPEATER_MODE,
@@ -1212,8 +1265,9 @@ static void repeater_training_done(struct dc_link *link, uint32_t offset) 
		&dpcd_pattern.raw,

		1);



	DC_LOG_HW_LINK_TRAINING("%s\n 0x%X pattern = %x\n",

	DC_LOG_HW_LINK_TRAINING("%s\n LTTPR Id: %d 0x%X pattern = %x\n",

		__func__,

		offset,

		dpcd_base_lt_offset,

		dpcd_pattern.v1_4.TRAINING_PATTERN_SET);

}
@@ -1663,6 +1717,11 @@ static struct dc_link_settings get_max_link_cap(struct dc_link *link) 


		if (link->dpcd_caps.lttpr_caps.max_link_rate < max_link_cap.link_rate)

			max_link_cap.link_rate = link->dpcd_caps.lttpr_caps.max_link_rate;



		DC_LOG_HW_LINK_TRAINING("%s\n Training with LTTPR,  max_lane count %d max_link rate %d \n",

						__func__,

						max_link_cap.lane_count,

						max_link_cap.link_rate);

	}

	return max_link_cap;

}
@@ -3196,6 +3255,8 @@ static bool retrieve_link_cap(struct dc_link *link) 
			link->is_lttpr_mode_transparent = true;

			dc_link_aux_configure_timeout(link->ddc, LINK_AUX_DEFAULT_TIMEOUT_PERIOD);

		}



		CONN_DATA_DETECT(link, lttpr_dpcd_data, sizeof(lttpr_dpcd_data), "LTTPR Caps: ");

	}



	{

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