diff options
| author | Wesley Chalmers <Wesley.Chalmers@amd.com> | 2020-12-07 11:53:46 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-01-13 23:44:22 -0500 |
| commit | 985faf2c4ecb606552293a5af1f0b5f99b7b1a3d (patch) | |
| tree | c1154cba67a3e0e24a9d5b87e6f75b7f6d4789d1 /drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c | |
| parent | 36ec5b16619e65aea5b35c028369381494838a89 (diff) | |
drm/amd/display: New sequence for HUBP blank
[WHY]
DCN30 has a bug where blanking HUBP blocks pstate allow unless
HUBP_DISABLE is toggled afterwards.
[HOW]
Create a HW sequence for blanking HUBP.
1. Wait for enter VBLANK
2. Set HUBP_BLANK
3. Make sure HUBP_IN_BLANK = 1
4. Toggle HUBP_DISABLE on and off to perform soft reset
All existing calls to hubp->funcs->set_blank should be replaced with
this new sequence.
In wait_for_mpcc_disconnect, only blank the pipe being disconnected, and
leave all other pipes unmodified.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@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/dcn21/dcn21_init.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c index 074e2713257f..0597391b2171 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c @@ -99,6 +99,7 @@ static const struct hw_sequencer_funcs dcn21_funcs = { #endif .is_abm_supported = dcn21_is_abm_supported, .set_disp_pattern_generator = dcn20_set_disp_pattern_generator, + .set_hubp_blank = dcn10_set_hubp_blank, }; static const struct hwseq_private_funcs dcn21_private_funcs = { |