diff options
| author | Eric Yang <Eric.Yang2@amd.com> | 2017-08-28 16:50:17 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 18:17:17 -0400 |
| commit | c9bb686b597d30935d6e05aaade51fc765d1ca5b (patch) | |
| tree | c53ff065907e674c2848ec2e75ab711c69458cff /drivers/gpu/drm | |
| parent | ab8db3e1653c50ae19d1c31d82f94beb5115aeef (diff) | |
drm/amd/display: Fix time out on boot
On boot, hubp 0 is powergated during enable accel mode, so we time out
when we try to blank in undo wa.
Fix: Check power gate status before set blank
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index 71ff1cedbdf4..7ea274475598 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -780,6 +780,12 @@ static void undo_DEGVIDCN10_253_wa(struct dc *dc) { struct dce_hwseq *hws = dc->hwseq; struct mem_input *mi = dc->res_pool->mis[0]; + int pwr_status = 0; + + REG_GET(DOMAIN0_PG_STATUS, DOMAIN0_PGFSM_PWR_STATUS, &pwr_status); + /* Don't need to blank if hubp is power gated*/ + if (pwr_status == 2) + return; mi->funcs->set_blank(mi, true); |