Rely on monitor's audio capability to turn on audio output for HDMI.
Tested-by: Wu Fengguang <fengguang...@intel.com>
Signed-off-by: Zhenyu Wang <zhen...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_hdmi.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c
b/drivers/gpu/drm/i915/intel_hdmi.c
index 783924c..90184e6 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -41,6 +41,7 @@ struct intel_hdmi {
struct intel_encoder base;
u32 sdvox_reg;
bool has_hdmi_sink;
+ bool has_audio;
};
static struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
@@ -71,11 +72,12 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder,
if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
- if (intel_hdmi->has_hdmi_sink) {
+ /* Required on CPT */
+ if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
+ sdvox |= HDMI_MODE_SELECT;
+
+ if (intel_hdmi->has_audio)
sdvox |= SDVO_AUDIO_ENABLE;
- if (HAS_PCH_CPT(dev))
- sdvox |= HDMI_MODE_SELECT;
- }
if (intel_crtc->pipe == 1) {
if (HAS_PCH_CPT(dev))
@@ -152,12 +154,14 @@ intel_hdmi_detect(struct drm_connector *connector)
enum drm_connector_status status = connector_status_disconnected;
intel_hdmi->has_hdmi_sink = false;
+ intel_hdmi->has_audio = false;
edid = drm_get_edid(connector, intel_hdmi->base.ddc_bus);
if (edid) {
if (edid->input & DRM_EDID_INPUT_DIGITAL) {
status = connector_status_connected;
intel_hdmi->has_hdmi_sink =
drm_detect_hdmi_monitor(edid);
+ intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
}
connector->display_info.raw_edid = NULL;
kfree(edid);
--
1.7.1
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