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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * For multichannel support4 */5 6#ifndef __SOUND_HDA_CHMAP_H7#define __SOUND_HDA_CHMAP_H8 9#include <sound/pcm.h>10#include <sound/hdaudio.h>11 12 13#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 8014 15struct hdac_cea_channel_speaker_allocation {16 int ca_index;17 int speakers[8];18 19 /* derived values, just for convenience */20 int channels;21 int spk_mask;22};23struct hdac_chmap;24 25struct hdac_chmap_ops {26 /*27 * Helpers for producing the channel map TLVs. These can be overridden28 * for devices that have non-standard mapping requirements.29 */30 int (*chmap_cea_alloc_validate_get_type)(struct hdac_chmap *chmap,31 struct hdac_cea_channel_speaker_allocation *cap, int channels);32 void (*cea_alloc_to_tlv_chmap)(struct hdac_chmap *hchmap,33 struct hdac_cea_channel_speaker_allocation *cap,34 unsigned int *chmap, int channels);35 36 /* check that the user-given chmap is supported */37 int (*chmap_validate)(struct hdac_chmap *hchmap, int ca,38 int channels, unsigned char *chmap);39 40 int (*get_spk_alloc)(struct hdac_device *hdac, int pcm_idx);41 42 void (*get_chmap)(struct hdac_device *hdac, int pcm_idx,43 unsigned char *chmap);44 void (*set_chmap)(struct hdac_device *hdac, int pcm_idx,45 unsigned char *chmap, int prepared);46 bool (*is_pcm_attached)(struct hdac_device *hdac, int pcm_idx);47 48 /* get and set channel assigned to each HDMI ASP (audio sample packet) slot */49 int (*pin_get_slot_channel)(struct hdac_device *codec,50 hda_nid_t pin_nid, int asp_slot);51 int (*pin_set_slot_channel)(struct hdac_device *codec,52 hda_nid_t pin_nid, int asp_slot, int channel);53 void (*set_channel_count)(struct hdac_device *codec,54 hda_nid_t cvt_nid, int chs);55};56 57struct hdac_chmap {58 unsigned int channels_max; /* max over all cvts */59 struct hdac_chmap_ops ops;60 struct hdac_device *hdac;61};62 63void snd_hdac_register_chmap_ops(struct hdac_device *hdac,64 struct hdac_chmap *chmap);65int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,66 int channels, bool chmap_set,67 bool non_pcm, unsigned char *map);68int snd_hdac_get_active_channels(int ca);69void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,70 hda_nid_t pin_nid, bool non_pcm, int ca,71 int channels, unsigned char *map,72 bool chmap_set);73void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen);74struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca);75int snd_hdac_chmap_to_spk_mask(unsigned char c);76int snd_hdac_spk_to_chmap(int spk);77int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,78 struct hdac_chmap *chmap);79#endif /* __SOUND_HDA_CHMAP_H */80