/* 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 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 */