1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * For multichannel support
4 */
5
6#ifndef __SOUND_HDA_CHMAP_H
7#define __SOUND_HDA_CHMAP_H
8
9#include <sound/pcm.h>
10#include <sound/hdaudio.h>
11
12
13#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
14
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 overridden
28	 * 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