drivers/usb/audio.h

   1 #define USB_DT_CS_DEVICE                0x21
   2 #define USB_DT_CS_CONFIG                0x22
   3 #define USB_DT_CS_STRING                0x23
   4 #define USB_DT_CS_INTERFACE             0x24
   5 #define USB_DT_CS_ENDPOINT              0x25
   6
   7 #define CS_AUDIO_UNDEFINED              0x20
   8 #define CS_AUDIO_DEVICE                 0x21
   9 #define CS_AUDIO_CONFIGURATION          0x22
  10 #define CS_AUDIO_STRING                 0x23
  11 #define CS_AUDIO_INTERFACE              0x24
  12 #define CS_AUDIO_ENDPOINT               0x25
  13
  14 #define HEADER                          0x01
  15 #define INPUT_TERMINAL                  0x02
  16 #define OUTPUT_TERMINAL                 0x03
  17 #define MIXER_UNIT                      0x04
  18 #define SELECTOR_UNIT                   0x05
  19 #define FEATURE_UNIT                    0x06
  20 #define PROCESSING_UNIT                 0x07
  21 #define EXTENSION_UNIT                  0x08
  22
  23 #define AS_GENERAL                      0x01
  24 #define FORMAT_TYPE                     0x02
  25 #define FORMAT_SPECIFIC                 0x03
  26
  27 #define EP_GENERAL                      0x01
  28
  29 #define MAX_CHAN                        9
  30 #define MAX_FREQ                        16
  31 #define MAX_IFACE                       8
  32 #define MAX_FORMAT                      8
  33 #define MAX_ALT                         32      /* Sorry, we need quite a few for the Philips webcams */
  34
  35 struct usb_audio_terminal
  36 {
  37         u8      flags;
  38         u8      assoc;
  39         u16     type;                   /* Mic etc */
  40         u8      channels;
  41         u8      source;
  42         u16     chancfg;
  43 };
  44
  45 struct usb_audio_format
  46 {
  47         u8      type;
  48         u8      channels;
  49         u8      num_freq;
  50         u8      sfz;
  51         u8      bits;
  52         u16     freq[MAX_FREQ];
  53 };
  54
  55 struct usb_audio_interface
  56 {
  57         u8      terminal;
  58         u8      delay;
  59         u16     num_formats;
  60         u16     format_type;
  61         u8      flags;
  62         u8      idleconf;       /* Idle config */
  63 #define AU_IFACE_FOUND  1
  64         struct  usb_audio_format format[MAX_FORMAT];
  65 };
  66
  67 struct usb_audio_device
  68 {
  69         struct list_head list;
  70         u8      mixer;
  71         u8      selector;
  72         void    *irq_handle;
  73         u8      num_channels;
  74         u8      num_dsp_iface;
  75         u8      channel_map[MAX_CHAN];
  76         struct usb_audio_terminal terminal[MAX_CHAN];
  77         struct usb_audio_interface interface[MAX_IFACE][MAX_ALT];
  78 };
  79
  80
  81
  82 /* Audio Class specific Request Codes */
  83
  84 #define SET_CUR    0x01
  85 #define GET_CUR    0x81
  86 #define SET_MIN    0x02
  87 #define GET_MIN    0x82
  88 #define SET_MAX    0x03
  89 #define GET_MAX    0x83
  90 #define SET_RES    0x04
  91 #define GET_RES    0x84
  92 #define SET_MEM    0x05
  93 #define GET_MEM    0x85
  94 #define GET_STAT   0xff
  95
  96 /* Terminal Control Selectors */
  97
  98 #define COPY_PROTECT_CONTROL       0x01
  99
 100 /* Feature Unit Control Selectors */
 101
 102 #define MUTE_CONTROL               0x01
 103 #define VOLUME_CONTROL             0x02
 104 #define BASS_CONTROL               0x03
 105 #define MID_CONTROL                0x04
 106 #define TREBLE_CONTROL             0x05
 107 #define GRAPHIC_EQUALIZER_CONTROL  0x06
 108 #define AUTOMATIC_GAIN_CONTROL     0x07
 109 #define DELAY_CONTROL              0x08
 110 #define BASS_BOOST_CONTROL         0x09
 111 #define LOUDNESS_CONTROL           0x0a
 112
 113 /* Endpoint Control Selectors */
 114
 115 #define SAMPLING_FREQ_CONTROL      0x01
 116 #define PITCH_CONTROL              0x02