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| author |   Jun Lei <jun.lei@amd.com> | 2020-11-24 11:58:19 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-01-13 23:43:56 -0500 |
| commit | cf3a2627597794797ce5930537c0e75df284b6e9 (patch) | |
| tree | e6b845ce7247f6f3e5142b195935d7182239f812 /drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h | |
| parent | drm/amd/display: Remove unused P010 debug flag (diff) | |
| download | wireguard-linux-cf3a2627597794797ce5930537c0e75df284b6e9.tar.xz wireguard-linux-cf3a2627597794797ce5930537c0e75df284b6e9.zip | |
drm/amd/display: implement T12 compliance
[why]
When OS reboots, and panel is turned off, T12 may not be maintained.
T12 is defined as the interval between VDDC off (occurs at shutdown) and
the next VDDC on (occurs when eDP is POST-ed)
[how]
DC already tracks panel power off time. Add a DC interface which DM can
call during shutdown. Ideally this should be as late as possible during
the shutdown sequence so the extra delay is minimal.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Jun Lei <jun.lei@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h index 7b12ffcdd4ec..7a19ff5d4214 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h @@ -54,6 +54,7 @@ struct hw_sequencer_funcs { /* Embedded Display Related */ void (*edp_power_control)(struct dc_link *link, bool enable); void (*edp_wait_for_hpd_ready)(struct dc_link *link, bool power_up); + void (*edp_wait_for_T12)(struct dc_link *link); /* Pipe Programming Related */ void (*init_hw)(struct dc *dc); |