1/*
 2 * For multichannel support
 3 */
 4
 5#ifndef __SOUND_HDA_CHMAP_H
 6#define __SOUND_HDA_CHMAP_H
 7
 8#include <sound/pcm.h>
 9#include <sound/hdaudio.h>
10
11
12#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
13
14struct hdac_cea_channel_speaker_allocation {
15	int ca_index;
16	int speakers[8];
17
18	/* derived values, just for convenience */
19	int channels;
20	int spk_mask;
21};
22struct hdac_chmap;
23
24struct hdac_chmap_ops {
25	/*
26	 * Helpers for producing the channel map TLVs. These can be overridden
27	 * for devices that have non-standard mapping requirements.
28	 */
29	int (*chmap_cea_alloc_validate_get_type)(struct hdac_chmap *chmap,
30		struct hdac_cea_channel_speaker_allocation *cap, int channels);
31	void (*cea_alloc_to_tlv_chmap)(struct hdac_chmap *hchmap,
32		struct hdac_cea_channel_speaker_allocation *cap,
33		unsigned int *chmap, int channels);
34
35	/* check that the user-given chmap is supported */
36	int (*chmap_validate)(struct hdac_chmap *hchmap, int ca,
37			int channels, unsigned char *chmap);
38
39	void (*get_chmap)(struct hdac_device *hdac, int pcm_idx,
40					unsigned char *chmap);
41	void (*set_chmap)(struct hdac_device *hdac, int pcm_idx,
42			unsigned char *chmap, int prepared);
43	bool (*is_pcm_attached)(struct hdac_device *hdac, int pcm_idx);
44
45	/* get and set channel assigned to each HDMI ASP (audio sample packet) slot */
46	int (*pin_get_slot_channel)(struct hdac_device *codec,
47			hda_nid_t pin_nid, int asp_slot);
48	int (*pin_set_slot_channel)(struct hdac_device *codec,
49			hda_nid_t pin_nid, int asp_slot, int channel);
50	void (*set_channel_count)(struct hdac_device *codec,
51				hda_nid_t cvt_nid, int chs);
52};
53
54struct hdac_chmap {
55	unsigned int channels_max; /* max over all cvts */
56	struct hdac_chmap_ops ops;
57	struct hdac_device *hdac;
58};
59
60void snd_hdac_register_chmap_ops(struct hdac_device *hdac,
61				struct hdac_chmap *chmap);
62int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,
63			int channels, bool chmap_set,
64			bool non_pcm, unsigned char *map);
65int snd_hdac_get_active_channels(int ca);
66void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,
67		       hda_nid_t pin_nid, bool non_pcm, int ca,
68		       int channels, unsigned char *map,
69		       bool chmap_set);
70void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen);
71struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca);
72int snd_hdac_chmap_to_spk_mask(unsigned char c);
73int snd_hdac_spk_to_chmap(int spk);
74int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,
75				struct hdac_chmap *chmap);
76#endif /* __SOUND_HDA_CHMAP_H */