From: Dave Airlie <airlied@gmail.com>
To: dri-devel@lists.freedesktop.org
Subject: [PATCH] drm/dp/mst: dump branch OUI in debugfs
Date: Tue, 14 Jul 2015 11:34:39 +1000 [thread overview]
Message-ID: <1436837679-14551-1-git-send-email-airlied@gmail.com> (raw)
From: Dave Airlie <airlied@redhat.com>
It appears some MST docks are worse than other, but the only
way to know is to see the sw revisions in here, so dump
the branch OUI so we can look at the sw revision.
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/drm_dp_mst_topology.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 8a3bfcd..e17a639 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -2657,6 +2657,11 @@ void drm_dp_mst_dump_topology(struct seq_file *m,
seq_printf(m, "%02x ", buf[i]);
seq_printf(m, "\n");
+ ret = drm_dp_dpcd_read(mgr->aux, DP_BRANCH_OUI, buf, DP_RECEIVER_CAP_SIZE);
+ seq_printf(m, "branch oui: ");
+ for (i = 0; i < DP_RECEIVER_CAP_SIZE; i++)
+ seq_printf(m, "%02x ", buf[i]);
+ seq_printf(m, "\n");
bret = dump_dp_payload_table(mgr, buf);
if (bret == true) {
seq_printf(m, "payload table: ");
--
2.4.3
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next reply other threads:[~2015-07-14 1:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-14 1:34 Dave Airlie [this message]
2015-07-14 8:28 ` [PATCH] drm/dp/mst: dump branch OUI in debugfs Thierry Reding
2015-07-15 0:09 ` Dave Airlie
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