linux/include/sound/hda_chmap.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * For multichannel support
 */

#ifndef __SOUND_HDA_CHMAP_H
#define __SOUND_HDA_CHMAP_H

#include <sound/pcm.h>
#include <sound/hdaudio.h>


#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE …

struct hdac_cea_channel_speaker_allocation { … };
struct hdac_chmap;

struct hdac_chmap_ops { … };

struct hdac_chmap { … };

void snd_hdac_register_chmap_ops(struct hdac_device *hdac,
				struct hdac_chmap *chmap);
int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,
			int channels, bool chmap_set,
			bool non_pcm, unsigned char *map);
int snd_hdac_get_active_channels(int ca);
void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,
		       hda_nid_t pin_nid, bool non_pcm, int ca,
		       int channels, unsigned char *map,
		       bool chmap_set);
void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen);
struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca);
int snd_hdac_chmap_to_spk_mask(unsigned char c);
int snd_hdac_spk_to_chmap(int spk);
int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,
				struct hdac_chmap *chmap);
#endif /* __SOUND_HDA_CHMAP_H */