drm/i915: Add audio pin sense / ELD callback

This callback will be called by the i915 driver to notify the hda
driver that its HDMI information needs to be refreshed, i e,
that audio output is now available (or unavailable) - usually as a
result of a monitor being plugged in (or unplugged).

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h
index c9a8b64..ab5bde3 100644 (file)
--- a/include/drm/i915_component.h
+++ b/include/drm/i915_component.h
@@ -34,6 +34,18 @@ struct i915_audio_component {
                void (*codec_wake_override)(struct device *, bool enable);
                int (*get_cdclk_freq)(struct device *);
        } *ops;
+
+       const struct i915_audio_component_audio_ops {
+               void *audio_ptr;
+               /**
+                * Call from i915 driver, notifying the HDA driver that
+                * pin sense and/or ELD information has changed.
+                * @audio_ptr:          HDA driver object
+                * @port:               Which port has changed (PORTA / PORTB / PORTC etc)
+                * @port_mst_index:     Index within that port, for DisplayPort multistreaming
+                */
+               void (*pin_eld_notify)(void *audio_ptr, int port, int port_mst_index);
+       } *audio_ops;
 };
 
 #endif /* _I915_COMPONENT_H_ */