diff options
| author | David Zhang <dingchen.zhang@amd.com> | 2022-05-04 00:53:44 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-06-07 23:09:57 +0300 |
| commit | 6bad4ff84cb57f548d42a41091159b750eed9ef9 (patch) | |
| tree | b6f046266e391da3c94c3ccb1ae6d9c99feb0ed6 /drivers | |
| parent | 44961f6ebce9a7dccb2ec3dca312c5dbf85920e5 (diff) | |
| download | linux-6bad4ff84cb57f548d42a41091159b750eed9ef9.tar.xz | |
drm/amd/display: expose AMD specific DPCD for PSR-SU-RC support
[why & how]
Expose vendor specific DPCD registers for rate controlling the eDP sink
TCON's refresh rate during PSR active. When used in combination with
PSR-SU and Freesync, it is called PSR-SU Rate Contorol, or PSR-SU-RC for
short.
v2: Add all DPCD registers required
Signed-off-by: David Zhang <dingchen.zhang@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/ddc_service_types.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/include/ddc_service_types.h b/drivers/gpu/drm/amd/display/include/ddc_service_types.h index 20a3d4e23f66..05096c644a60 100644 --- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h +++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h @@ -41,6 +41,10 @@ #define DP_DEVICE_ID_38EC11 0x38EC11 #define DP_FORCE_PSRSU_CAPABILITY 0x40F +#define DP_SINK_PSR_ACTIVE_VTOTAL 0x373 +#define DP_SINK_PSR_ACTIVE_VTOTAL_CONTROL_MODE 0x375 +#define DP_SOURCE_PSR_ACTIVE_VTOTAL 0x376 + enum ddc_result { DDC_RESULT_UNKNOWN = 0, DDC_RESULT_SUCESSFULL, |