diff options
| author | Zhan Liu <zhan.liu@amd.com> | 2021-06-14 14:54:14 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-06-29 23:41:22 -0400 |
| commit | a51482458dafb836dbf7c8ae3200ca8db7348201 (patch) | |
| tree | 0d94938411be69cbebb5b59659a90a723dbf7c87 /drivers/gpu/drm/amd/include | |
| parent | b322a50d17ede5cff6622040f345228afecdcc45 (diff) | |
drm/amd/display: Enabling eDP no power sequencing with DAL feature mask
[Why]
Sometimes, DP receiver chip power-controlled externally by an
Embedded Controller could be treated and used as eDP,
if it drives mobile display. In this case,
we shouldn't be doing power-sequencing, hence we can skip
waiting for T7-ready and T9-ready."
[How]
Added a feature mask to enable eDP no power sequencing feature.
To enable this, set 0x10 flag in amdgpu.dcfeaturemask on
Linux command line.
Signed-off-by: Zhan Liu <zhan.liu@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/include')
| -rw-r--r-- | drivers/gpu/drm/amd/include/amd_shared.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h index 332b0df53e52..ff1d3d4a6488 100644 --- a/drivers/gpu/drm/amd/include/amd_shared.h +++ b/drivers/gpu/drm/amd/include/amd_shared.h @@ -223,10 +223,12 @@ enum amd_harvest_ip_mask { }; enum DC_FEATURE_MASK { - DC_FBC_MASK = 0x1, - DC_MULTI_MON_PP_MCLK_SWITCH_MASK = 0x2, - DC_DISABLE_FRACTIONAL_PWM_MASK = 0x4, - DC_PSR_MASK = 0x8, + //Default value can be found at "uint amdgpu_dc_feature_mask" + DC_FBC_MASK = (1 << 0), //0x1, disabled by default + DC_MULTI_MON_PP_MCLK_SWITCH_MASK = (1 << 1), //0x2, enabled by default + DC_DISABLE_FRACTIONAL_PWM_MASK = (1 << 2), //0x4, disabled by default + DC_PSR_MASK = (1 << 3), //0x8, disabled by default + DC_EDP_NO_POWER_SEQUENCING = (1 << 4), //0x10, disabled by default }; enum DC_DEBUG_MASK { |