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Commit de00d253 authored by Anthony Koo's avatar Anthony Koo Committed by Alex Deucher
Browse files

drm/amd/display: link_rate_set should index into table 



[Why]
Current implementation that maps link_rate_set value to
actual link rate is incorrect.

[How]
Fix this implementation, such that link_rate_set indexes into
the supported_link_rate table.

Signed-off-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Reviewed-by: default avatarHarry Wentland <Harry.Wentland@amd.com>
Acked-by: default avatarAric Cyr <Aric.Cyr@amd.com>
Acked-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 00fbeb4e

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

+1 −34
Original line number Diff line number Diff line
@@ -2540,7 +2540,6 @@ void detect_edp_sink_caps(struct dc_link *link) 
	uint32_t entry;

	uint32_t link_rate_in_khz;

	enum dc_link_rate link_rate = LINK_RATE_UNKNOWN;

	uint8_t link_rate_set = 0;



	retrieve_link_cap(link);
@@ -2560,39 +2559,7 @@ void detect_edp_sink_caps(struct dc_link *link) 
				link_rate = linkRateInKHzToLinkRateMultiplier(link_rate_in_khz);

				if (link->reported_link_cap.link_rate < link_rate) {

					link->reported_link_cap.link_rate = link_rate;



					switch (link_rate) {

					case LINK_RATE_LOW:

						link_rate_set = 1;

						break;

					case LINK_RATE_RATE_2:

						link_rate_set = 2;

						break;

					case LINK_RATE_RATE_3:

						link_rate_set = 3;

						break;

					case LINK_RATE_HIGH:

						link_rate_set = 4;

						break;

					case LINK_RATE_RBR2:

						link_rate_set = 5;

						break;

					case LINK_RATE_RATE_6:

						link_rate_set = 6;

						break;

					case LINK_RATE_HIGH2:

						link_rate_set = 7;

						break;

					case LINK_RATE_HIGH3:

						link_rate_set = 8;

						break;

					default:

						link_rate_set = 0;

						break;

					}



					if (link->dpcd_caps.link_rate_set < link_rate_set)

						link->dpcd_caps.link_rate_set = link_rate_set;

					link->dpcd_caps.link_rate_set = entry;

				}

			}

		}