drm/i915: Share the common force-audio property between connectors

Make the audio property creation routine common and share the single
property between the connectors.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c
index 9034dd8f33c7..3b26a3ba02dd 100644
--- a/drivers/gpu/drm/i915/intel_modes.c
+++ b/drivers/gpu/drm/i915/intel_modes.c
@@ -81,6 +81,36 @@ int intel_ddc_get_modes(struct drm_connector *connector,
         return ret;
 }
 
+static const char *force_audio_names[] = {
+        "off",
+        "auto",
+        "on",
+};
+
+void
+intel_attach_force_audio_property(struct drm_connector *connector)
+{
+        struct drm_device *dev = connector->dev;
+        struct drm_i915_private *dev_priv = dev->dev_private;
+        struct drm_property *prop;
+        int i;
+
+        prop = dev_priv->force_audio_property;
+        if (prop == NULL) {
+                prop = drm_property_create(dev, DRM_MODE_PROP_ENUM,
+                                           "audio",
+                                           ARRAY_SIZE(force_audio_names));
+                if (prop == NULL)
+                        return;
+
+                for (i = 0; i < ARRAY_SIZE(force_audio_names); i++)
+                        drm_property_add_enum(prop, i, i-1, force_audio_names[i]);
+
+                dev_priv->force_audio_property = prop;
+        }
+        drm_connector_attach_property(connector, prop, 0);
+}
+
 static const char *broadcast_rgb_names[] = {
         "Full",
         "Limited 16:235",