include/sound/hda_chmap.h

   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
  14 struct 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 };
  22 struct hdac_chmap;
  23
  24 struct 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         int (*get_spk_alloc)(struct hdac_device *hdac, int pcm_idx);
  40
  41         void (*get_chmap)(struct hdac_device *hdac, int pcm_idx,
  42                                         unsigned char *chmap);
  43         void (*set_chmap)(struct hdac_device *hdac, int pcm_idx,
  44                         unsigned char *chmap, int prepared);
  45         bool (*is_pcm_attached)(struct hdac_device *hdac, int pcm_idx);
  46
  47         /* get and set channel assigned to each HDMI ASP (audio sample packet) slot */
  48         int (*pin_get_slot_channel)(struct hdac_device *codec,
  49                         hda_nid_t pin_nid, int asp_slot);
  50         int (*pin_set_slot_channel)(struct hdac_device *codec,
  51                         hda_nid_t pin_nid, int asp_slot, int channel);
  52         void (*set_channel_count)(struct hdac_device *codec,
  53                                 hda_nid_t cvt_nid, int chs);
  54 };
  55
  56 struct hdac_chmap {
  57         unsigned int channels_max; /* max over all cvts */
  58         struct hdac_chmap_ops ops;
  59         struct hdac_device *hdac;
  60 };
  61
  62 void snd_hdac_register_chmap_ops(struct hdac_device *hdac,
  63                                 struct hdac_chmap *chmap);
  64 int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,
  65                         int channels, bool chmap_set,
  66                         bool non_pcm, unsigned char *map);
  67 int snd_hdac_get_active_channels(int ca);
  68 void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,
  69                        hda_nid_t pin_nid, bool non_pcm, int ca,
  70                        int channels, unsigned char *map,
  71                        bool chmap_set);
  72 void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen);
  73 struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca);
  74 int snd_hdac_chmap_to_spk_mask(unsigned char c);
  75 int snd_hdac_spk_to_chmap(int spk);
  76 int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,
  77                                 struct hdac_chmap *chmap);
  78 #endif /* __SOUND_HDA_CHMAP_H */