Signed-off-by: Adam Jackson <a...@redhat.com>
---
drivers/gpu/drm/i915/intel_dp.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 4b63791..cc8e1ef 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1954,6 +1954,23 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
return false;
}
+static void
+intel_dp_probe_oui(struct intel_dp *intel_dp)
+{
+ u8 buf[3];
+
+ if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
+ return;
+
+ if (intel_dp_aux_native_read_retry(intel_dp, DP_SINK_OUI, buf, 3))
+ DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n",
+ buf[0], buf[1], buf[2]);
+
+ if (intel_dp_aux_native_read_retry(intel_dp, DP_BRANCH_OUI, buf, 3))
+ DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
+ buf[0], buf[1], buf[2]);
+}
+
static bool
intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector)
{
@@ -2137,6 +2154,8 @@ intel_dp_detect(struct drm_connector *connector, bool
force)
if (status != connector_status_connected)
return status;
+ intel_dp_probe_oui(intel_dp);
+
if (intel_dp->force_audio != HDMI_AUDIO_AUTO) {
intel_dp->has_audio = (intel_dp->force_audio == HDMI_AUDIO_ON);
} else {
--
1.7.7.6
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