drm/nv50: prevent accidently turning off encoders we're actually using

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On most cards the DisplayPort connector is created with 2 encoders sharing
a single SOR (for native DP, and for DVI-over-DP).  The previous logic
for turning off unused encoders didn't take into account that we could
have multiple drm_encoders on a single hw encoder and ended up turning off
encoders that were actually being used still.

This patch fixes that issue.  We probably want to look at something a bit
better later on, and only expose one drm_encoder per hw encoder block.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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This commit is contained in:

Ben Skeggs 2010-01-18 08:52:35 +10:00

parent 134f248bea

commit 58d65b84de

1 changed files with 21 additions and 1 deletions

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drivers/gpu/drm/nouveau/nv50_crtc.c

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