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Commit 6225ee05 authored by Adam Jackson's avatar Adam Jackson Committed by Dave Airlie
Browse files

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



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

Signed-off-by: default avatarAdam Jackson <ajax@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 40c5d876

drivers/gpu/drm/nouveau/nouveau_dp.c

+21 −0
Original line number Diff line number Diff line
@@ -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;

}