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| author | Hung, Cruise <Cruise.Hung@amd.com> | 2022-05-13 09:16:42 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-06-01 15:56:48 -0400 |
| commit | 6ecf9773a5030aa4932096754bacff20e1b944b8 (patch) | |
| tree | cb7db050c7728408b4f0adb04a5213f0ded0ba99 /drivers/gpu/drm/amd/display/dmub/src | |
| parent | 92909cde3235f894d7cdf59709d86e9b22f897ce (diff) | |
| download | linux-6ecf9773a5030aa4932096754bacff20e1b944b8.tar.gz linux-6ecf9773a5030aa4932096754bacff20e1b944b8.tar.bz2 linux-6ecf9773a5030aa4932096754bacff20e1b944b8.zip | |
drm/amd/display: Fix DMUB outbox trace in S4 (#4465)
[Why]
DMUB Outbox0 read/write pointer not sync after resumed from S4.
And that caused old traces were sent to outbox.
[How]
Disable DMUB Outbox0 interrupt
and clear DMUB Outbox0 read/write pointer when resumes from S4.
And then enable Outbox0 interrupt before starts DMCUB.
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Cruise Hung <Cruise.Hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub/src')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c index 8d4574895757..c7bd7e216710 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c @@ -132,6 +132,8 @@ void dmub_dcn31_reset(struct dmub_srv *dmub) REG_WRITE(DMCUB_INBOX1_WPTR, 0); REG_WRITE(DMCUB_OUTBOX1_RPTR, 0); REG_WRITE(DMCUB_OUTBOX1_WPTR, 0); + REG_WRITE(DMCUB_OUTBOX0_RPTR, 0); + REG_WRITE(DMCUB_OUTBOX0_WPTR, 0); REG_WRITE(DMCUB_SCRATCH0, 0); /* Clear the GPINT command manually so we don't send anything during boot. */ |