Commit 79416e97 authored by Lyude Paul's avatar Lyude Paul
Browse files

drm/nouveau/kms: Start using drm_dp_read_dpcd_caps() 



Now that we've extracted i915's code for reading both the normal DPCD
caps and extended DPCD caps into a shared helper, let's start using this
in nouveau to enable us to start checking extended DPCD caps for free.

Signed-off-by: default avatarLyude Paul <lyude@redhat.com>
Reviewed-by: default avatarBen Skeggs <bskeggs@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826182456.322681-21-lyude@redhat.com
parent b9936121

drivers/gpu/drm/nouveau/nouveau_dp.c

+6 −8
Original line number Diff line number Diff line
@@ -54,15 +54,13 @@ nouveau_dp_probe_dpcd(struct nouveau_connector *nv_connector, 
	int ret;

	u8 *dpcd = outp->dp.dpcd;



	ret = drm_dp_dpcd_read(aux, DP_DPCD_REV, dpcd, DP_RECEIVER_CAP_SIZE);

	if (ret == DP_RECEIVER_CAP_SIZE && dpcd[DP_DPCD_REV]) {

		ret = drm_dp_read_desc(aux, &outp->dp.desc,

				       drm_dp_is_branch(dpcd));

	ret = drm_dp_read_dpcd_caps(aux, dpcd);

	if (ret < 0)

		goto out;

	} else {



	ret = drm_dp_read_desc(aux, &outp->dp.desc, drm_dp_is_branch(dpcd));

	if (ret < 0)

		goto out;

	}



	if (nouveau_mst) {

		mstm = outp->dp.mstm;