Commit 2f912935 authored by Weiguang Li's avatar Weiguang Li Committed by Alex Deucher
Browse files

drm/amd/display: Support DRR granularity 



[Why&How]
Support DRR granularity for coasting Vtotal calculation

Reviewed-by: default avatarRobin Chen <robin.chen@amd.com>
Reviewed-by: default avatarWenjing Liu <wenjing.liu@amd.com>
Signed-off-by: default avatarWeiguang Li <wei-guang.li@amd.com>
Signed-off-by: default avatarChenyu Chen <chen-yu.chen@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent cea573a8

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

+1 −0
Original line number Diff line number Diff line
@@ -1296,6 +1296,7 @@ struct dpcd_caps { 
	/* Indicates the number of SST links supported by MSO (Multi-Stream Output) */

	uint8_t mso_cap_sst_links_supported;

	uint8_t dp_edp_general_cap_2;

	uint16_t drr_granularity;

};



union dpcd_sink_ext_caps {

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

+7 −0
Original line number Diff line number Diff line
@@ -2219,6 +2219,13 @@ void detect_edp_sink_caps(struct dc_link *link) 
				(uint8_t *)&link->dpcd_caps.edp_oled_emission_rate,

				sizeof(link->dpcd_caps.edp_oled_emission_rate));



	/*

	 * Read DRR granularity

	 */

	core_link_read_dpcd(link, DP_SINK_DRR_GRANULARITY,

			(uint8_t *)&link->dpcd_caps.drr_granularity,

			sizeof(link->dpcd_caps.drr_granularity));



	/*

	 * Read Multi-SST (Single Stream Transport) capability

	 * for eDP version 1.4 or higher.

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

+1 −0
Original line number Diff line number Diff line
@@ -188,6 +188,7 @@ enum dpcd_psr_sink_states { 
#define DP_SOURCE_BACKLIGHT_CURRENT_PEAK        0x326

#define DP_SOURCE_BACKLIGHT_CONTROL             0x32E

#define DP_SOURCE_BACKLIGHT_ENABLE              0x32F

#define DP_SINK_DRR_GRANULARITY                 0x33B

#define DP_SOURCE_MINIMUM_HBLANK_SUPPORTED      0x340

#define DP_SINK_PR_REPLAY_STATUS                0x378

#define DP_SINK_PR_PIXEL_DEVIATION_PER_LINE     0x379