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drm/amd/display: Read Sink emission rate capability

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[WHY]
To get sink emission rate information for future
supported refresh rate calculation.

Reviewed-by: ChunTao Tso <chuntao.tso@amd.com>
Signed-off-by: Robin Chen <robin.chen@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Robin Chen 2024-09-12 20:59:36 +08:00 committed by Alex Deucher
parent ad6b76cd91
commit 668d6808e9
3 changed files with 20 additions and 10 deletions
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3
drivers/gpu/drm/amd/display/dc/dc_dp_types.h
View File

@ -1192,6 +1192,7 @@ struct dpcd_caps {
struct edp_psr_info psr_info;
struct replay_info pr_info;
uint16_t edp_oled_emission_rate;
};
union dpcd_sink_ext_caps {
@ -1205,7 +1206,7 @@ union dpcd_sink_ext_caps {
uint8_t oled : 1;
uint8_t reserved_2 : 1;
uint8_t miniled : 1;
uint8_t reserved : 1;
uint8_t emission_output : 1;
} bits;
uint8_t raw;
};

8
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
View File

@ -2067,6 +2067,14 @@ void detect_edp_sink_caps(struct dc_link *link)
core_link_read_dpcd(link, DP_SINK_PR_MAX_NUMBER_OF_DEVIATION_LINE,
&link->dpcd_caps.pr_info.max_deviation_line,
sizeof(link->dpcd_caps.pr_info.max_deviation_line));
/*
* OLED Emission Rate info
*/
if (link->dpcd_sink_ext_caps.bits.emission_output)
core_link_read_dpcd(link, DP_SINK_EMISSION_RATE,
(uint8_t *)&link->dpcd_caps.edp_oled_emission_rate,
sizeof(link->dpcd_caps.edp_oled_emission_rate));
}
bool dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap)

19
drivers/gpu/drm/amd/display/include/dpcd_defs.h
View File

@ -164,18 +164,19 @@ enum dpcd_psr_sink_states {
PSR_SINK_STATE_SINK_INTERNAL_ERROR = 7,
};
#define DP_SOURCE_SEQUENCE 0x30c
#define DP_SOURCE_TABLE_REVISION 0x310
#define DP_SOURCE_PAYLOAD_SIZE 0x311
#define DP_SOURCE_SINK_CAP 0x317
#define DP_SOURCE_BACKLIGHT_LEVEL 0x320
#define DP_SOURCE_BACKLIGHT_CURRENT_PEAK 0x326
#define DP_SOURCE_BACKLIGHT_CONTROL 0x32E
#define DP_SOURCE_BACKLIGHT_ENABLE 0x32F
#define DP_SOURCE_MINIMUM_HBLANK_SUPPORTED 0x340
#define DP_SOURCE_SEQUENCE 0x30C
#define DP_SOURCE_TABLE_REVISION 0x310
#define DP_SOURCE_PAYLOAD_SIZE 0x311
#define DP_SOURCE_SINK_CAP 0x317
#define DP_SOURCE_BACKLIGHT_LEVEL 0x320
#define DP_SOURCE_BACKLIGHT_CURRENT_PEAK 0x326
#define DP_SOURCE_BACKLIGHT_CONTROL 0x32E
#define DP_SOURCE_BACKLIGHT_ENABLE 0x32F
#define DP_SOURCE_MINIMUM_HBLANK_SUPPORTED 0x340
#define DP_SINK_PR_REPLAY_STATUS 0x378
#define DP_SINK_PR_PIXEL_DEVIATION_PER_LINE 0x379
#define DP_SINK_PR_MAX_NUMBER_OF_DEVIATION_LINE 0x37A
#define DP_SINK_EMISSION_RATE 0x37E
/* Remove once drm_dp_helper.h is updated upstream */
#ifndef DP_TOTAL_LTTPR_CNT