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| author |   Dale Zhao <dale.zhao@amd.com> | 2021-12-28 16:50:28 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2022-01-18 17:43:36 -0500 |
| commit | 047db281c026de5971cedb5bb486aa29bd16a39d (patch) | |
| tree | d9f10d284b1aafa8961888dbfbce50310f6dbbcb | |
| parent | drm/amd/display: update dml to rev.99 and smu clk_table w/a (diff) | |
| download | wireguard-linux-047db281c026de5971cedb5bb486aa29bd16a39d.tar.xz wireguard-linux-047db281c026de5971cedb5bb486aa29bd16a39d.zip | |
drm/amd/display: Add signal type check when verify stream backends same
[Why]
For allow eDP hot-plug feature, the stream signal may change to VIRTUAL
when plug-out and back to eDP when plug-in. OS will still setPathMode
with same timing for each plugging, but eDP gets no stream update as we
don't check signal type changing back as keeping it VIRTUAL. It's also
unsafe for future cases that stream signal is switched with same timing.
[How]
Check stream signal type change include previous HDMI signal case.
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Dale Zhao <dale.zhao@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index b3912ff9dc91..b34bf59cf54b 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1640,6 +1640,9 @@ static bool are_stream_backends_same( if (is_timing_changed(stream_a, stream_b)) return false; + if (stream_a->signal != stream_b->signal) + return false; + if (stream_a->dpms_off != stream_b->dpms_off) return false; |