diff options
| author | Zi Yu Liao <[email protected]> | 2019-06-20 10:55:26 -0400 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2019-07-18 14:17:19 -0500 |
| commit | 1ca068ed34d6b39d336c1b0d618ed73ba8f04548 (patch) | |
| tree | 0047cf079a22600a5ac79ebd5236dc48e883b399 /tools/perf/util/trace-event-scripting.c | |
| parent | 19f876967a98db63fbfca7e0d9f55099f52189e0 (diff) | |
drm/amd/display: fix DMCU hang when going into Modern Standby
[why]
When the system is going into suspend, set_backlight gets called
after the eDP got blanked. Since smooth brightness is enabled,
the driver will make a call into the DMCU to ramp the brightness.
The DMCU would try to enable ABM to do so. But since the display is
blanked, this ends up causing ABM1_ACE_DBUF_REG_UPDATE_PENDING to
get stuck at 1, which results in a dead lock in the DMCU firmware.
[how]
Disable brightness ramping when the eDP display is blanked.
Signed-off-by: Zi Yu Liao <[email protected]>
Reviewed-by: Eric Yang <[email protected]>
Acked-by: Anthony Koo <[email protected]>
Acked-by: Leo Li <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions