diff options
| author | Joshua Aberback <joshua.aberback@amd.com> | 2020-04-30 02:01:14 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-10-05 22:16:30 +0300 |
| commit | 3e19095534caec6be8f8c1a7d8fd4879e23637ed (patch) | |
| tree | e586f46680328f59140ead02872b3f8d9a75fce8 /drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c | |
| parent | fe984cb3dd325c4c5c7c360e43d93608d4d8870a (diff) | |
| download | linux-3e19095534caec6be8f8c1a7d8fd4879e23637ed.tar.xz | |
drm/amd/display: Force enable pstate on driver unload
[Why]
During driver unload, it is expected that p-state switching is supported.
If it's not supported, PMFW will hang due to a forced p-state switch. Even
if the current timing does not support p-state normally, we still want to
force allow because the worst that can happen is underflow. This will
match Navi10 behaviour.
[How]
- new hubbub func to control the force pstate register
- force allow when releasing display ownership
- registers are inaccessible after due to m_cgs.hwNotAvailable
- explicitly disable force signal during hw_init
- if driver is disabled and re-enabled, register not cleared otherwise
Also, remove DCN3 part of dcn10_init_hw, we will not be going back to it.
Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c index 7c90c2222506..ae7a789bf6e6 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c @@ -93,6 +93,7 @@ static const struct hw_sequencer_funcs dcn30_funcs = { .apply_idle_power_optimizations = dcn30_apply_idle_power_optimizations, .set_backlight_level = dcn21_set_backlight_level, .set_abm_immediate_disable = dcn21_set_abm_immediate_disable, + .hardware_release = dcn30_hardware_release, }; static const struct hwseq_private_funcs dcn30_private_funcs = { |