Commit c798836b authored by Jack Chang's avatar Jack Chang Committed by Alex Deucher
Browse files

drm/amd/display: Get panel replay capability from DPCD 



[Why&How]
Read Panel replay caps from DPCD when retrieving link capability

Reviewed-by: default avatarRobin Chen <robin.chen@amd.com>
Signed-off-by: default avatarJack Chang <jack.chang@amd.com>
Signed-off-by: default avatarLeon Huang <Leon.Huang1@amd.com>
Signed-off-by: default avatarIvan Lipski <ivan.lipski@amd.com>
Tested-by: default avatarDan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2e6c79e4

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

+11 −0
Original line number Diff line number Diff line
@@ -1157,6 +1157,16 @@ struct dprx_states { 
	bool cable_id_written;

};



union dpcd_panel_replay_capability_supported {

	struct {

		unsigned char PANEL_REPLAY_SUPPORT          :1;

		unsigned char SELECTIVE_UPDATE_SUPPORT      :1;

		unsigned char EARLY_TRANSPORT_SUPPORT       :1;

		unsigned char RESERVED				        :5;

	} bits;

	unsigned char raw;

};



enum dpcd_downstream_port_max_bpc {

	DOWN_STREAM_MAX_8BPC = 0,

	DOWN_STREAM_MAX_10BPC,
@@ -1280,6 +1290,7 @@ struct dpcd_caps { 
	struct edp_psr_info psr_info;



	struct replay_info pr_info;

	union dpcd_panel_replay_capability_supported pr_caps_supported;

	uint16_t edp_oled_emission_rate;

	union dp_receive_port0_cap receive_port0_cap;

	/* Indicates the number of SST links supported by MSO (Multi-Stream Output) */

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c

+5 −0
Original line number Diff line number Diff line
@@ -2091,6 +2091,11 @@ static bool retrieve_link_cap(struct dc_link *link) 
			link->dpcd_caps.max_uncompressed_pixel_rate_cap.raw,

			sizeof(link->dpcd_caps.max_uncompressed_pixel_rate_cap.raw));



	core_link_read_dpcd(link,

			DP_PANEL_REPLAY_CAPABILITY_SUPPORT,

			&link->dpcd_caps.pr_caps_supported.raw,

			sizeof(link->dpcd_caps.pr_caps_supported.raw));



	/* Read DP tunneling information. */

	status = dpcd_get_tunneling_device_data(link);

	if (status != DC_OK)