There are two separate sets of DPCD registers for the DP OUI - as well as
for the device ID and HW/SW revision - based on whether the given DP
device is a branch or a sink. Currently we print both branch and sink
OUIs, for consistency print only the one that corresponds to the
probed device.
v2:
- Split out this change into a separate patch. (Jani)
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 1c1a8c8..1991250 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3624,17 +3624,17 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
static void
intel_dp_probe_oui(struct intel_dp *intel_dp)
{
+ bool is_branch = drm_dp_is_branch(intel_dp->dpcd);
u8 buf[3];
if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
return;
- if (drm_dp_dpcd_read(&intel_dp->aux, DP_SINK_OUI, buf, 3) == 3)
- DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n",
- buf[0], buf[1], buf[2]);
-
- if (drm_dp_dpcd_read(&intel_dp->aux, DP_BRANCH_OUI, buf, 3) == 3)
- DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
+ if (drm_dp_dpcd_read(&intel_dp->aux,
+ is_branch ? DP_BRANCH_OUI : DP_SINK_OUI,
+ buf, 3) == 3)
+ DRM_DEBUG_KMS("%s OUI: %02hx%02hx%02hx\n",
+ is_branch ? "Branch" : "Sink",
buf[0], buf[1], buf[2]);
}
--
2.5.0
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