sound/usb/usbaudio.h

   1 #ifndef __USBAUDIO_H
   2 #define __USBAUDIO_H
   3 /*
   4  *   (Tentative) USB Audio Driver for ALSA
   5  *
   6  *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
   7  *
   8  *
   9  *   This program is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU General Public License as published by
  11  *   the Free Software Foundation; either version 2 of the License, or
  12  *   (at your option) any later version.
  13  *
  14  *   This program is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with this program; if not, write to the Free Software
  21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  */
  23
  24
  25 /*
  26  */
  27
  28 #define USB_SUBCLASS_AUDIO_CONTROL      0x01
  29 #define USB_SUBCLASS_AUDIO_STREAMING    0x02
  30 #define USB_SUBCLASS_MIDI_STREAMING     0x03
  31 #define USB_SUBCLASS_VENDOR_SPEC        0xff
  32
  33 #define HEADER                          0x01
  34 #define INPUT_TERMINAL                  0x02
  35 #define OUTPUT_TERMINAL                 0x03
  36 #define MIXER_UNIT                      0x04
  37 #define SELECTOR_UNIT                   0x05
  38 #define FEATURE_UNIT                    0x06
  39 #define PROCESSING_UNIT                 0x07
  40 #define EXTENSION_UNIT                  0x08
  41
  42 #define AS_GENERAL                      0x01
  43 #define FORMAT_TYPE                     0x02
  44 #define FORMAT_SPECIFIC                 0x03
  45
  46 #define EP_GENERAL                      0x01
  47
  48 #define MS_GENERAL                      0x01
  49 #define MIDI_IN_JACK                    0x02
  50 #define MIDI_OUT_JACK                   0x03
  51
  52 /* endpoint attributes */
  53 #define EP_ATTR_MASK                    0x0c
  54 #define EP_ATTR_ASYNC                   0x04
  55 #define EP_ATTR_ADAPTIVE                0x08
  56 #define EP_ATTR_SYNC                    0x0c
  57
  58 /* cs endpoint attributes */
  59 #define EP_CS_ATTR_SAMPLE_RATE          0x01
  60 #define EP_CS_ATTR_PITCH_CONTROL        0x02
  61 #define EP_CS_ATTR_FILL_MAX             0x80
  62
  63 /* Audio Class specific Request Codes */
  64
  65 #define SET_CUR    0x01
  66 #define GET_CUR    0x81
  67 #define SET_MIN    0x02
  68 #define GET_MIN    0x82
  69 #define SET_MAX    0x03
  70 #define GET_MAX    0x83
  71 #define SET_RES    0x04
  72 #define GET_RES    0x84
  73 #define SET_MEM    0x05
  74 #define GET_MEM    0x85
  75 #define GET_STAT   0xff
  76
  77 /* Terminal Control Selectors */
  78
  79 #define COPY_PROTECT_CONTROL       0x01
  80
  81 /* Endpoint Control Selectors */
  82
  83 #define SAMPLING_FREQ_CONTROL      0x01
  84 #define PITCH_CONTROL              0x02
  85
  86 /* Format Types */
  87 #define USB_FORMAT_TYPE_I       0x01
  88 #define USB_FORMAT_TYPE_II      0x02
  89 #define USB_FORMAT_TYPE_III     0x03
  90
  91 /* type I */
  92 #define USB_AUDIO_FORMAT_PCM    0x01
  93 #define USB_AUDIO_FORMAT_PCM8   0x02
  94 #define USB_AUDIO_FORMAT_IEEE_FLOAT     0x03
  95 #define USB_AUDIO_FORMAT_ALAW   0x04
  96 #define USB_AUDIO_FORMAT_MU_LAW 0x05
  97
  98 /* type II */
  99 #define USB_AUDIO_FORMAT_MPEG   0x1001
 100 #define USB_AUDIO_FORMAT_AC3    0x1002
 101
 102 /* type III */
 103 #define USB_AUDIO_FORMAT_IEC1937_AC3    0x2001
 104 #define USB_AUDIO_FORMAT_IEC1937_MPEG1_LAYER1   0x2002
 105 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_NOEXT    0x2003
 106 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_EXT      0x2004
 107 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER1_LS        0x2005
 108 #define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER23_LS       0x2006
 109
 110
 111 /* maximum number of endpoints per interface */
 112 #define MIDI_MAX_ENDPOINTS 2
 113
 114 /* handling of USB vendor/product ID pairs as 32-bit numbers */
 115 #define USB_ID(vendor, product) (((vendor) << 16) | (product))
 116 #define USB_ID_VENDOR(id) ((id) >> 16)
 117 #define USB_ID_PRODUCT(id) ((u16)(id))
 118
 119 /*
 120  */
 121
 122 struct snd_usb_audio {
 123         int index;
 124         struct usb_device *dev;
 125         struct snd_card *card;
 126         u32 usb_id;
 127         int shutdown;
 128         int num_interfaces;
 129
 130         struct list_head pcm_list;      /* list of pcm streams */
 131         int pcm_devs;
 132
 133         struct list_head midi_list;     /* list of midi interfaces */
 134         int next_midi_device;
 135
 136         struct list_head mixer_list;    /* list of mixer interfaces */
 137 };
 138
 139 /*
 140  * Information about devices with broken descriptors
 141  */
 142
 143 /* special values for .ifnum */
 144 #define QUIRK_NO_INTERFACE              -2
 145 #define QUIRK_ANY_INTERFACE             -1
 146
 147 enum quirk_type {
 148         QUIRK_IGNORE_INTERFACE,
 149         QUIRK_COMPOSITE,
 150         QUIRK_MIDI_STANDARD_INTERFACE,
 151         QUIRK_MIDI_FIXED_ENDPOINT,
 152         QUIRK_MIDI_YAMAHA,
 153         QUIRK_MIDI_MIDIMAN,
 154         QUIRK_MIDI_NOVATION,
 155         QUIRK_MIDI_RAW,
 156         QUIRK_MIDI_EMAGIC,
 157         QUIRK_MIDI_CME,
 158         QUIRK_AUDIO_STANDARD_INTERFACE,
 159         QUIRK_AUDIO_FIXED_ENDPOINT,
 160         QUIRK_AUDIO_EDIROL_UA700_UA25,
 161         QUIRK_AUDIO_EDIROL_UA1000,
 162
 163         QUIRK_TYPE_COUNT
 164 };
 165
 166 struct snd_usb_audio_quirk {
 167         const char *vendor_name;
 168         const char *product_name;
 169         int16_t ifnum;
 170         uint16_t type;
 171         const void *data;
 172 };
 173
 174 /* data for QUIRK_MIDI_FIXED_ENDPOINT */
 175 struct snd_usb_midi_endpoint_info {
 176         int8_t   out_ep;        /* ep number, 0 autodetect */
 177         uint8_t  out_interval;  /* interval for interrupt endpoints */
 178         int8_t   in_ep;
 179         uint8_t  in_interval;
 180         uint16_t out_cables;    /* bitmask */
 181         uint16_t in_cables;     /* bitmask */
 182 };
 183
 184 /* for QUIRK_MIDI_YAMAHA, data is NULL */
 185
 186 /* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info
 187  * structure (out_cables and in_cables only) */
 188
 189 /* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk
 190  * structures, terminated with .ifnum = -1 */
 191
 192 /* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */
 193
 194 /* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */
 195
 196 /* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */
 197
 198 /* for QUIRK_IGNORE_INTERFACE, data is NULL */
 199
 200 /* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */
 201
 202 /* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info
 203  * structure (out_cables and in_cables only) */
 204
 205 /* for QUIRK_MIDI_CME, data is NULL */
 206
 207 /*
 208  */
 209
 210 #define combine_word(s)    ((*s) | ((unsigned int)(s)[1] << 8))
 211 #define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))
 212 #define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))
 213
 214 unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
 215
 216 void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
 217 void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
 218
 219 int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
 220                     __u8 request, __u8 requesttype, __u16 value, __u16 index,
 221                     void *data, __u16 size, int timeout);
 222
 223 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif);
 224 void snd_usb_mixer_disconnect(struct list_head *p);
 225
 226 int snd_usb_create_midi_interface(struct snd_usb_audio *chip, struct usb_interface *iface,
 227                                   const struct snd_usb_audio_quirk *quirk);
 228 void snd_usbmidi_input_stop(struct list_head* p);
 229 void snd_usbmidi_input_start(struct list_head* p);
 230 void snd_usbmidi_disconnect(struct list_head *p);
 231
 232 /*
 233  * retrieve usb_interface descriptor from the host interface
 234  * (conditional for compatibility with the older API)
 235  */
 236 #ifndef get_iface_desc
 237 #define get_iface_desc(iface)   (&(iface)->desc)
 238 #define get_endpoint(alt,ep)    (&(alt)->endpoint[ep].desc)
 239 #define get_ep_desc(ep)         (&(ep)->desc)
 240 #define get_cfg_desc(cfg)       (&(cfg)->desc)
 241 #endif
 242
 243 #ifndef snd_usb_get_speed
 244 #define snd_usb_get_speed(dev) ((dev)->speed)
 245 #endif
 246
 247 #endif /* __USBAUDIO_H */