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| author | Wesley Chalmers <Wesley.Chalmers@amd.com> | 2020-12-07 19:53:46 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-01-14 07:44:22 +0300 |
| commit | 985faf2c4ecb606552293a5af1f0b5f99b7b1a3d (patch) | |
| tree | c1154cba67a3e0e24a9d5b87e6f75b7f6d4789d1 /drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c | |
| parent | 36ec5b16619e65aea5b35c028369381494838a89 (diff) | |
| download | linux-985faf2c4ecb606552293a5af1f0b5f99b7b1a3d.tar.xz | |
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/dml/dcn30/display_mode_vba_30.c')
0 files changed, 0 insertions, 0 deletions