Current File : //lib/modules/3.10.0-957.21.3.el7.centos.plus.x86_64/source/include/sound/hda_chmap.h
/*
* 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 80
struct hdac_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 hdac_cea_channel_speaker_allocation *cap, int channels);
void (*cea_alloc_to_tlv_chmap)(struct hdac_chmap *hchmap,
struct hdac_cea_channel_speaker_allocation *cap,
unsigned int *chmap, int channels);
/* check that the user-given chmap is supported */
int (*chmap_validate)(struct hdac_chmap *hchmap, int ca,
int channels, unsigned char *chmap);
int (*get_spk_alloc)(struct hdac_device *hdac, int pcm_idx);
void (*get_chmap)(struct hdac_device *hdac, int pcm_idx,
unsigned char *chmap);
void (*set_chmap)(struct hdac_device *hdac, int pcm_idx,
unsigned char *chmap, int prepared);
bool (*is_pcm_attached)(struct hdac_device *hdac, int pcm_idx);
/* get and set channel assigned to each HDMI ASP (audio sample packet) slot */
int (*pin_get_slot_channel)(struct hdac_device *codec,
hda_nid_t pin_nid, int asp_slot);
int (*pin_set_slot_channel)(struct hdac_device *codec,
hda_nid_t pin_nid, int asp_slot, int channel);
void (*set_channel_count)(struct hdac_device *codec,
hda_nid_t cvt_nid, int chs);
};
struct hdac_chmap {
unsigned int channels_max; /* max over all cvts */
struct hdac_chmap_ops ops;
struct hdac_device *hdac;
};
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 */
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