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drm/nouveau/dp: workaround broken display 

The display in fdo#76483 pulses the hotplug line for link retraining
after we cut power to the main link on the source, even while it's
in D3.

fdo#76483

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2014-07-03 08:53:50 +10:00
parent 0713b4510e
commit 7fac493371
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/nouveau/core/engine/disp/sornv50.c
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@ -87,6 +87,7 @@ nv50_sor_mthd(struct nouveau_object *object, u32 mthd, void *args, u32 size)
struct nvkm_output_dp *outpdp = (void *)outp;
switch (data) {
case NV94_DISP_SOR_DP_PWR_STATE_OFF:
nouveau_event_put(outpdp->irq);
((struct nvkm_output_dp_impl *)nv_oclass(outp))
->lnk_pwr(outpdp, 0);
atomic_set(&outpdp->lt.done, 0);