drm/radeon: Don't turn off DP sink when disconnected

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Turning off the sink in this case causes various issues, because
userspace expects it to stay on until it turns it off explicitly.

Instead, turn the sink off and back on when a display is connected
again. This dance seems necessary for link training to work correctly.

Bugzilla: https://bugs.freedesktop.org/105308
Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Michel Dänzer 2018-03-14 18:14:04 +01:00 • committed by Alex Deucher

parent 34e40f6338

commit a3f73c8cf4

1 changed files with 12 additions and 19 deletions

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drivers/gpu/drm/radeon/radeon_connectors.c

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