diff options
| author |   Sung Lee <sung.lee@amd.com> | 2020-06-25 13:49:31 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-07-14 14:34:02 -0400 |
| commit | ca751df231d14fd2bd1f8ee700d6a16cc541706a (patch) | |
| tree | 158127233f18f30d79dfc0e08d2d6eb8e5f8d5f8 /drivers/gpu/drm/amd/display/dc/inc | |
| parent | drm/amd/display: update dml var (diff) | |
| download | linux-dev-ca751df231d14fd2bd1f8ee700d6a16cc541706a.tar.xz linux-dev-ca751df231d14fd2bd1f8ee700d6a16cc541706a.zip | |
drm/amd/display: Power down hardware if set mode is not called before timeout
[WHY]
In headless systems, if set mode is not called, hardware will not be
powered down on boot, causing HW/SW discrepancies. Powering down
hardware on boot will ensure SW state is accurate.
[HOW]
Set a timer callback on boot for 10 seconds. If set mode is not called
within that time, power down hardware. Otherwise, do not power down.
Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@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')
| -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 066a2a723c12..720ce5e458d8 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h @@ -56,6 +56,7 @@ struct hw_sequencer_funcs { /* Pipe Programming Related */ void (*init_hw)(struct dc *dc); + void (*power_down_on_boot)(struct dc *dc); void (*enable_accelerated_mode)(struct dc *dc, struct dc_state *context); enum dc_status (*apply_ctx_to_hw)(struct dc *dc, |