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| author | David Zhang <dingchen.zhang@amd.com> | 2022-04-11 16:04:39 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-04-25 17:10:43 -0400 |
| commit | d9f442e9a20c20333ef9b2341d7c74c9783d30b4 (patch) | |
| tree | 86deb96794c8b8201a520392be8ee256c27fd6bb /drivers/gpu/drm/amd/display/include | |
| parent | 4a0caac06a4c587e56d89bd2fabfc0d33eb4fcb9 (diff) | |
| download | linux-d9f442e9a20c20333ef9b2341d7c74c9783d30b4.tar.bz2 | |
drm/amd/display: read PSR-SU cap DPCD for specific panel
[why & how]
For some specific eDP panel, we'd check the PSR-SU cap during boot
by reading the vendor specific DPCD, otherwise it will cause to
false report the eDP panel which supports PSR-SU as an non-PSR-SU
panel.
- add the vendor specific DPCD address in ddc_service_types header
- if specific eDP panel detected, check vendor specific DPCD for
PSR-SU cap
Reviewed-by: Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: David Zhang <dingchen.zhang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/include')
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/ddc_service_types.h | 2 |
1 files changed, 2 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 f883d87791fe..73b9e0a87e54 100644 --- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h +++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h @@ -39,6 +39,8 @@ #define DP_BRANCH_HW_REV_20 0x20 #define DP_DEVICE_ID_38EC11 0x38EC11 +#define DP_FORCE_PSRSU_CAPABILITY 0x40F + enum ddc_result { DDC_RESULT_UNKNOWN = 0, DDC_RESULT_SUCESSFULL, |