| 1 | /* SPDX-License-Identifier: GPL-2.0 */
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| 2 | /*
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| 3 | * For multichannel support
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| 4 | */
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| 5 |
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| 6 | #ifndef __SOUND_HDA_CHMAP_H
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| 7 | #define __SOUND_HDA_CHMAP_H
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| 8 |
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| 9 | #include <sound/pcm.h>
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| 10 | #include <sound/hdaudio.h>
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| 11 |
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| 12 |
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| 13 | #define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
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| 14 |
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| 15 | struct hdac_cea_channel_speaker_allocation {
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| 16 | int ca_index;
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| 17 | int speakers[8];
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| 18 |
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| 19 | /* derived values, just for convenience */
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| 20 | int channels;
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| 21 | int spk_mask;
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| 22 | };
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| 23 | struct hdac_chmap;
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| 24 |
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| 25 | struct hdac_chmap_ops {
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| 26 | /*
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| 27 | * Helpers for producing the channel map TLVs. These can be overridden
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| 28 | * for devices that have non-standard mapping requirements.
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| 29 | */
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| 30 | int (*chmap_cea_alloc_validate_get_type)(struct hdac_chmap *chmap,
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| 31 | struct hdac_cea_channel_speaker_allocation *cap, int channels);
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| 32 | void (*cea_alloc_to_tlv_chmap)(struct hdac_chmap *hchmap,
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| 33 | struct hdac_cea_channel_speaker_allocation *cap,
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| 34 | unsigned int *chmap, int channels);
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| 35 |
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| 36 | /* check that the user-given chmap is supported */
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| 37 | int (*chmap_validate)(struct hdac_chmap *hchmap, int ca,
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| 38 | int channels, unsigned char *chmap);
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| 39 |
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| 40 | int (*get_spk_alloc)(struct hdac_device *hdac, int pcm_idx);
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| 41 |
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| 42 | void (*get_chmap)(struct hdac_device *hdac, int pcm_idx,
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| 43 | unsigned char *chmap);
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| 44 | void (*set_chmap)(struct hdac_device *hdac, int pcm_idx,
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| 45 | unsigned char *chmap, int prepared);
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| 46 | bool (*is_pcm_attached)(struct hdac_device *hdac, int pcm_idx);
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| 47 |
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| 48 | /* get and set channel assigned to each HDMI ASP (audio sample packet) slot */
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| 49 | int (*pin_get_slot_channel)(struct hdac_device *codec,
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| 50 | hda_nid_t pin_nid, int asp_slot);
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| 51 | int (*pin_set_slot_channel)(struct hdac_device *codec,
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| 52 | hda_nid_t pin_nid, int asp_slot, int channel);
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| 53 | void (*set_channel_count)(struct hdac_device *codec,
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| 54 | hda_nid_t cvt_nid, int chs);
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| 55 | };
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| 56 |
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| 57 | struct hdac_chmap {
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| 58 | unsigned int channels_max; /* max over all cvts */
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| 59 | struct hdac_chmap_ops ops;
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| 60 | struct hdac_device *hdac;
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| 61 | };
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| 62 |
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| 63 | void snd_hdac_register_chmap_ops(struct hdac_device *hdac,
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| 64 | struct hdac_chmap *chmap);
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| 65 | int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,
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| 66 | int channels, bool chmap_set,
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| 67 | bool non_pcm, unsigned char *map);
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| 68 | int snd_hdac_get_active_channels(int ca);
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| 69 | void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,
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| 70 | hda_nid_t pin_nid, bool non_pcm, int ca,
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| 71 | int channels, unsigned char *map,
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| 72 | bool chmap_set);
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| 73 | void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen);
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| 74 | struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca);
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| 75 | int snd_hdac_chmap_to_spk_mask(unsigned char c);
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| 76 | int snd_hdac_spk_to_chmap(int spk);
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| 77 | int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,
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| 78 | struct hdac_chmap *chmap);
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| 79 | #endif /* __SOUND_HDA_CHMAP_H */
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