Commit 4a897de1 authored by Sung Joon Kim's avatar Sung Joon Kim Committed by Alex Deucher
Browse files

drm/amd/display: disable HPD SW timer for passive dongle type 1 only 



[why]
Need to provide this workaround
only for type 1 passive dongle

[how]
Detect if dongle is type 1 or 2.
And use it to determine if w/a is needed.

Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Acked-by: default avatarAlan Liu <HaoPing.Liu@amd.com>
Signed-off-by: default avatarSung Joon Kim <sungjoon.kim@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 76a52f36

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

+1 −0
Original line number Diff line number Diff line
@@ -731,6 +731,7 @@ static bool detect_dp(struct dc_link *link, 
								sink_caps,

								audio_support);

		link->dpcd_caps.dongle_type = sink_caps->dongle_type;

		link->dpcd_caps.is_dongle_type_one = sink_caps->is_dongle_type_one;

		link->dpcd_caps.dpcd_rev.raw = 0;

	}

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

+2 −0
Original line number Diff line number Diff line
@@ -493,6 +493,7 @@ void dal_ddc_service_i2c_query_dp_dual_mode_adaptor( 
			sink_cap->max_hdmi_pixel_clock =

				max_tmds_clk * 1000;

		}

		sink_cap->is_dongle_type_one = false;



	} else {

		if (is_valid_hdmi_signature == true) {
@@ -510,6 +511,7 @@ void dal_ddc_service_i2c_query_dp_dual_mode_adaptor( 
					"Type 1 DP-HDMI passive dongle (no signature) %dMhz: ",

					sink_cap->max_hdmi_pixel_clock / 1000);

		}

		sink_cap->is_dongle_type_one = true;

	}



	return;

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

+1 −0
Original line number Diff line number Diff line
@@ -1206,6 +1206,7 @@ struct dpcd_caps { 


	/* dongle type (DP converter, CV smart dongle) */

	enum display_dongle_type dongle_type;

	bool is_dongle_type_one;

	/* branch device or sink device */

	bool is_branch_dev;

	/* Dongle's downstream count. */

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

+1 −0
Original line number Diff line number Diff line
@@ -64,6 +64,7 @@ enum ddc_service_type { 
struct display_sink_capability {

	/* dongle type (DP converter, CV smart dongle) */

	enum display_dongle_type dongle_type;

	bool is_dongle_type_one;



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

	 capabilities going INTO SINK DEVICE (stream capabilities)