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| 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 | |
| 15 | struct 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 | }; |
| 23 | struct hdac_chmap; |
| 24 | |
| 25 | struct 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 | |
| 57 | struct hdac_chmap { |
| 58 | unsigned int channels_max; /* max over all cvts */ |
| 59 | struct hdac_chmap_ops ops; |
| 60 | struct hdac_device *hdac; |
| 61 | }; |
| 62 | |
| 63 | void snd_hdac_register_chmap_ops(struct hdac_device *hdac, |
| 64 | struct hdac_chmap *chmap); |
| 65 | int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc, |
| 66 | int channels, bool chmap_set, |
| 67 | bool non_pcm, unsigned char *map); |
| 68 | int snd_hdac_get_active_channels(int ca); |
| 69 | void 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); |
| 73 | void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen); |
| 74 | struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca); |
| 75 | int snd_hdac_chmap_to_spk_mask(unsigned char c); |
| 76 | int snd_hdac_spk_to_chmap(int spk); |
| 77 | int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx, |
| 78 | struct hdac_chmap *chmap); |
| 79 | #endif /* __SOUND_HDA_CHMAP_H */ |
| 80 |
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