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(parent: cf851f3) | patch
drm/amd/display: Retry AUX write when fail occurs
authorWayne Lin <Wayne.Lin@amd.com>
Tue, 18 Aug 2020 03:19:42 +0000 (11:19 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 26 Aug 2020 20:40:19 +0000 (16:40 -0400)
commitec314c4612653aaf6e8d6a7c23fed9b3f7a0039f
tree12ca67f2f39361717caa7d409471d9d542b2ac70tree | snapshot
parentcf851f3ff891ff8cb204e7118682d55429c6fb96commit | diff
drm/amd/display: Retry AUX write when fail occurs

[Why]
In dm_dp_aux_transfer() now, we forget to handle AUX_WR fail cases. We
suppose every write wil get done successfully and hence some AUX
commands might not sent out indeed.

[How]
Check if AUX_WR success. If not, retry it.

Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c diff | blob | history
Domain: System / Kernel;