diff options
Diffstat (limited to 'include/drm/i915_component.h')
| -rw-r--r-- | include/drm/i915_component.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index fab13851f95a..b46fa0ef3005 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -65,6 +65,20 @@ struct i915_audio_component_ops { * sample rate, it will call this function to set n/cts */ int (*sync_audio_rate)(struct device *, int port, int rate); + /** + * @get_eld: fill the audio state and ELD bytes for the given port + * + * Called from audio driver to get the HDMI/DP audio state of the given + * digital port, and also fetch ELD bytes to the given pointer. + * + * It returns the byte size of the original ELD (not the actually + * copied size), zero for an invalid ELD, or a negative error code. + * + * Note that the returned size may be over @max_bytes. Then it + * implies that only a part of ELD has been copied to the buffer. + */ + int (*get_eld)(struct device *, int port, bool *enabled, + unsigned char *buf, int max_bytes); }; /** |