Commit a166f86e authored by abdoulaye berthe's avatar abdoulaye berthe Committed by Alex Deucher
Browse files

drm/amd/display: store lttpr mode with dpcd 



Make sure that lttpr_caps has the mode set to repeater.

Signed-off-by: default avatarabdoulaye berthe <abdoulaye.berthe@amd.com>
Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e8027e08

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

+11 −2
Original line number Diff line number Diff line
@@ -1217,24 +1217,33 @@ static void configure_lttpr_mode(struct dc_link *link) 
	uint8_t repeater_cnt;

	uint32_t aux_interval_address;

	uint8_t repeater_id;

	enum dc_status result = DC_ERROR_UNEXPECTED;

	uint8_t repeater_mode = DP_PHY_REPEATER_MODE_TRANSPARENT;



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

	core_link_write_dpcd(link,

	result = core_link_write_dpcd(link,

			DP_PHY_REPEATER_MODE,

			(uint8_t *)&repeater_mode,

			sizeof(repeater_mode));



	if (result == DC_OK) {

		link->dpcd_caps.lttpr_caps.mode = repeater_mode;

	}



	if (!link->is_lttpr_mode_transparent) {



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



		repeater_mode = DP_PHY_REPEATER_MODE_NON_TRANSPARENT;

		core_link_write_dpcd(link,

		result = core_link_write_dpcd(link,

				DP_PHY_REPEATER_MODE,

				(uint8_t *)&repeater_mode,

				sizeof(repeater_mode));



		if (result == DC_OK) {

			link->dpcd_caps.lttpr_caps.mode = repeater_mode;

		}



		repeater_cnt = convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt);

		for (repeater_id = repeater_cnt; repeater_id > 0; repeater_id--) {

			aux_interval_address = DP_TRAINING_AUX_RD_INTERVAL_PHY_REPEATER1 +

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