diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | 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 a1a5ce71558a..71c7096e3869 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1961,6 +1961,23 @@ 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) { @@ -2144,6 +2161,8 @@ 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 { |