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drm/nouveau/dp: Probe branch/sink OUIs (v2) 

(airlied: v2: fix missing struct - fixes compile)

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Adam Jackson 2012-05-14 16:05:49 -04:00 committed by Dave Airlie
parent 40c5d87647
commit 6225ee05ea
1 changed files with 21 additions and 0 deletions
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21
drivers/gpu/drm/nouveau/nouveau_dp.c
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@ -510,6 +510,25 @@ nouveau_dp_dpms(struct drm_encoder *encoder, int mode, u32 datarate,
nouveau_dp_link_train(encoder, datarate, func);
}
static void
nouveau_dp_probe_oui(struct drm_device *dev, struct nouveau_i2c_chan *auxch,
u8 *dpcd)
{
u8 buf[3];
if (!(dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
return;
if (!auxch_tx(dev, auxch->drive, 9, DP_SINK_OUI, buf, 3))
NV_DEBUG_KMS(dev, "Sink OUI: %02hx%02hx%02hx\n",
buf[0], buf[1], buf[2]);
if (!auxch_tx(dev, auxch->drive, 9, DP_BRANCH_OUI, buf, 3))
NV_DEBUG_KMS(dev, "Branch OUI: %02hx%02hx%02hx\n",
buf[0], buf[1], buf[2]);
}
bool
nouveau_dp_detect(struct drm_encoder *encoder)
{
@ -544,6 +563,8 @@ nouveau_dp_detect(struct drm_encoder *encoder)
NV_DEBUG_KMS(dev, "maximum: %dx%d\n",
nv_encoder->dp.link_nr, nv_encoder->dp.link_bw);
nouveau_dp_probe_oui(dev, auxch, dpcd);
return true;
}