drivers/usb/class/audio.h

   1 #define CS_AUDIO_UNDEFINED              0x20
   2 #define CS_AUDIO_DEVICE                 0x21
   3 #define CS_AUDIO_CONFIGURATION          0x22
   4 #define CS_AUDIO_STRING                 0x23
   5 #define CS_AUDIO_INTERFACE              0x24
   6 #define CS_AUDIO_ENDPOINT               0x25
   7
   8 #define HEADER                          0x01
   9 #define INPUT_TERMINAL                  0x02
  10 #define OUTPUT_TERMINAL                 0x03
  11 #define MIXER_UNIT                      0x04
  12 #define SELECTOR_UNIT                   0x05
  13 #define FEATURE_UNIT                    0x06
  14 #define PROCESSING_UNIT                 0x07
  15 #define EXTENSION_UNIT                  0x08
  16
  17 #define AS_GENERAL                      0x01
  18 #define FORMAT_TYPE                     0x02
  19 #define FORMAT_SPECIFIC                 0x03
  20
  21 #define EP_GENERAL                      0x01
  22
  23 #define MAX_CHAN                        9
  24 #define MAX_FREQ                        16
  25 #define MAX_IFACE                       8
  26 #define MAX_FORMAT                      8
  27 #define MAX_ALT                         32      /* Sorry, we need quite a few for the Philips webcams */
  28
  29 struct usb_audio_terminal
  30 {
  31         u8      flags;
  32         u8      assoc;
  33         u16     type;                   /* Mic etc */
  34         u8      channels;
  35         u8      source;
  36         u16     chancfg;
  37 };
  38
  39 struct usb_audio_format
  40 {
  41         u8      type;
  42         u8      channels;
  43         u8      num_freq;
  44         u8      sfz;
  45         u8      bits;
  46         u16     freq[MAX_FREQ];
  47 };
  48
  49 struct usb_audio_interface
  50 {
  51         u8      terminal;
  52         u8      delay;
  53         u16     num_formats;
  54         u16     format_type;
  55         u8      flags;
  56         u8      idleconf;       /* Idle config */
  57 #define AU_IFACE_FOUND  1
  58         struct  usb_audio_format format[MAX_FORMAT];
  59 };
  60
  61 struct usb_audio_device
  62 {
  63         struct list_head list;
  64         u8      mixer;
  65         u8      selector;
  66         void    *irq_handle;
  67         u8      num_channels;
  68         u8      num_dsp_iface;
  69         u8      channel_map[MAX_CHAN];
  70         struct usb_audio_terminal terminal[MAX_CHAN];
  71         struct usb_audio_interface interface[MAX_IFACE][MAX_ALT];
  72 };
  73
  74
  75
  76 /* Audio Class specific Request Codes */
  77
  78 #define SET_CUR    0x01
  79 #define GET_CUR    0x81
  80 #define SET_MIN    0x02
  81 #define GET_MIN    0x82
  82 #define SET_MAX    0x03
  83 #define GET_MAX    0x83
  84 #define SET_RES    0x04
  85 #define GET_RES    0x84
  86 #define SET_MEM    0x05
  87 #define GET_MEM    0x85
  88 #define GET_STAT   0xff
  89
  90 /* Terminal Control Selectors */
  91
  92 #define COPY_PROTECT_CONTROL       0x01
  93
  94 /* Feature Unit Control Selectors */
  95
  96 #define MUTE_CONTROL               0x01
  97 #define VOLUME_CONTROL             0x02
  98 #define BASS_CONTROL               0x03
  99 #define MID_CONTROL                0x04
 100 #define TREBLE_CONTROL             0x05
 101 #define GRAPHIC_EQUALIZER_CONTROL  0x06
 102 #define AUTOMATIC_GAIN_CONTROL     0x07
 103 #define DELAY_CONTROL              0x08
 104 #define BASS_BOOST_CONTROL         0x09
 105 #define LOUDNESS_CONTROL           0x0a
 106
 107 /* Endpoint Control Selectors */
 108
 109 #define SAMPLING_FREQ_CONTROL      0x01
 110 #define PITCH_CONTROL              0x02