drm/i915: Enable DisplayPort audio
This will turn on DP audio output by checking monitor's audio
capability.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
[ickle: rebase onto recent changes and rearranged for clarity]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 350c541..42cd528 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1458,9 +1458,8 @@
}
static enum drm_connector_status
-ironlake_dp_detect(struct drm_connector *connector)
+ironlake_dp_detect(struct intel_dp *intel_dp)
{
- struct intel_dp *intel_dp = intel_attached_dp(connector);
enum drm_connector_status status;
/* Can't disconnect eDP */
@@ -1470,8 +1469,8 @@
status = connector_status_disconnected;
if (intel_dp_aux_native_read(intel_dp,
0x000, intel_dp->dpcd,
- sizeof (intel_dp->dpcd)) == sizeof (intel_dp->dpcd))
- {
+ sizeof (intel_dp->dpcd))
+ == sizeof(intel_dp->dpcd)) {
if (intel_dp->dpcd[0] != 0)
status = connector_status_connected;
}
@@ -1480,25 +1479,13 @@
return status;
}
-/**
- * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect DP connection.
- *
- * \return true if DP port is connected.
- * \return false if DP port is disconnected.
- */
static enum drm_connector_status
-intel_dp_detect(struct drm_connector *connector, bool force)
+g4x_dp_detect(struct intel_dp *intel_dp)
{
- struct intel_dp *intel_dp = intel_attached_dp(connector);
struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t temp, bit;
enum drm_connector_status status;
-
- intel_dp->has_audio = false;
-
- if (HAS_PCH_SPLIT(dev))
- return ironlake_dp_detect(connector);
+ uint32_t temp, bit;
switch (intel_dp->output_reg) {
case DP_B:
@@ -1520,14 +1507,47 @@
return connector_status_disconnected;
status = connector_status_disconnected;
- if (intel_dp_aux_native_read(intel_dp,
- 0x000, intel_dp->dpcd,
+ if (intel_dp_aux_native_read(intel_dp, 0x000, intel_dp->dpcd,
sizeof (intel_dp->dpcd)) == sizeof (intel_dp->dpcd))
{
if (intel_dp->dpcd[0] != 0)
status = connector_status_connected;
}
- return status;
+
+ return bit;
+}
+
+/**
+ * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect DP connection.
+ *
+ * \return true if DP port is connected.
+ * \return false if DP port is disconnected.
+ */
+static enum drm_connector_status
+intel_dp_detect(struct drm_connector *connector, bool force)
+{
+ struct intel_dp *intel_dp = intel_attached_dp(connector);
+ struct drm_device *dev = intel_dp->base.base.dev;
+ enum drm_connector_status status;
+ struct edid *edid = NULL;
+
+ intel_dp->has_audio = false;
+
+ if (HAS_PCH_SPLIT(dev))
+ status = ironlake_dp_detect(intel_dp);
+ else
+ status = g4x_dp_detect(intel_dp);
+ if (status != connector_status_connected)
+ return status;
+
+ edid = drm_get_edid(connector, &intel_dp->adapter);
+ if (edid) {
+ intel_dp->has_audio = drm_detect_monitor_audio(edid);
+ connector->display_info.raw_edid = NULL;
+ kfree(edid);
+ }
+
+ return connector_status_connected;
}
static int intel_dp_get_modes(struct drm_connector *connector)