diff options
| author | Adam Jackson <ajax@redhat.com> | 2012-05-14 16:05:49 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-05-22 10:29:02 +0100 |
| commit | 6225ee05ea44638b51ded0056505923cb6e2656d (patch) | |
| tree | 11e020098d3fa1884982b10d4dc8c4acaff3ec5c /drivers/gpu/drm/nouveau/nouveau_dp.c | |
| parent | 40c5d876478abb5aa8e5fb1741205dd35fcffe42 (diff) | |
| download | linux-6225ee05ea44638b51ded0056505923cb6e2656d.tar.gz | |
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>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_dp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dp.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c index d996134b1b28..7e289d2ad8e4 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dp.c +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c @@ -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; } |