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Message-Id: <20200811200457.134743-11-lyude@redhat.com>
Date: Tue, 11 Aug 2020 16:04:47 -0400
From: Lyude Paul <lyude@...hat.com>
To: nouveau@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org
Cc: Ben Skeggs <bskeggs@...hat.com>, David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
linux-kernel@...r.kernel.org (open list)
Subject: [RFC 10/20] drm/nouveau/kms: Use new drm_dp_has_mst() helper for checking MST caps
Signed-off-by: Lyude Paul <lyude@...hat.com>
---
drivers/gpu/drm/nouveau/nouveau_dp.c | 16 +++-------------
1 file changed, 3 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index d701f09aea645..bb85d81c25244 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -44,7 +44,6 @@ nouveau_dp_probe_dpcd(struct nouveau_connector *nv_connector,
struct nv50_mstm *mstm = NULL;
int ret;
u8 *dpcd = outp->dp.dpcd;
- u8 tmp;
ret = drm_dp_dpcd_read(aux, DP_DPCD_REV, dpcd, DP_RECEIVER_CAP_SIZE);
if (ret == DP_RECEIVER_CAP_SIZE && dpcd[DP_DPCD_REV]) {
@@ -56,19 +55,10 @@ nouveau_dp_probe_dpcd(struct nouveau_connector *nv_connector,
return connector_status_disconnected;
}
- if (nouveau_mst)
+ if (nouveau_mst) {
mstm = outp->dp.mstm;
-
- if (mstm) {
- if (dpcd[DP_DPCD_REV] >= DP_DPCD_REV_12) {
- ret = drm_dp_dpcd_readb(aux, DP_MSTM_CAP, &tmp);
- if (ret < 0)
- return connector_status_disconnected;
-
- mstm->can_mst = !!(tmp & DP_MST_CAP);
- } else {
- mstm->can_mst = false;
- }
+ if (mstm)
+ mstm->can_mst = drm_dp_has_mst(aux, dpcd);
}
return connector_status_connected;
--
2.26.2
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