diff options
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/hda_chmap.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/sound/hda_chmap.h b/include/sound/hda_chmap.h new file mode 100644 index 000000000000..9ab20f0274a3 --- /dev/null +++ b/include/sound/hda_chmap.h @@ -0,0 +1,41 @@ +/* + * For multichannel support + */ + +#ifndef __SOUND_HDA_CHMAP_H +#define __SOUND_HDA_CHMAP_H + +#include <sound/hdaudio.h> + +struct cea_channel_speaker_allocation { + int ca_index; + int speakers[8]; + + /* derived values, just for convenience */ + int channels; + int spk_mask; +}; +struct hdac_chmap; + +struct hdac_chmap_ops { + /* + * Helpers for producing the channel map TLVs. These can be overridden + * for devices that have non-standard mapping requirements. + */ + int (*chmap_cea_alloc_validate_get_type)(struct hdac_chmap *chmap, + struct cea_channel_speaker_allocation *cap, int channels); + void (*cea_alloc_to_tlv_chmap) + (struct cea_channel_speaker_allocation *cap, + unsigned int *chmap, int channels); + + /* check that the user-given chmap is supported */ + int (*chmap_validate)(int ca, int channels, unsigned char *chmap); +}; + +struct hdac_chmap { + unsigned int channels_max; /* max over all cvts */ + struct hdac_chmap_ops ops; + struct hdac_device *hdac; +}; + +#endif /* __SOUND_HDA_CHMAP_H */ |