LXR linux/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
 122struct 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
 147enum 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        QUIRK_AUDIO_EDIROL_UA101,
 163
 164        QUIRK_TYPE_COUNT
 165};
 166
 167struct snd_usb_audio_quirk {
 168        const char *vendor_name;
 169        const char *product_name;
 170        int16_t ifnum;
 171        uint16_t type;
 172        const void *data;
 173};
 174
 175/* data for QUIRK_MIDI_FIXED_ENDPOINT */
 176struct snd_usb_midi_endpoint_info {
 177        int8_t   out_ep;        /* ep number, 0 autodetect */
 178        uint8_t  out_interval;  /* interval for interrupt endpoints */
 179        int8_t   in_ep; 
 180        uint8_t  in_interval;
 181        uint16_t out_cables;    /* bitmask */
 182        uint16_t in_cables;     /* bitmask */
 183};
 184
 185/* for QUIRK_MIDI_YAMAHA, data is NULL */
 186
 187/* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info
 188 * structure (out_cables and in_cables only) */
 189
 190/* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk
 191 * structures, terminated with .ifnum = -1 */
 192
 193/* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */
 194
 195/* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */
 196
 197/* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */
 198
 199/* for QUIRK_IGNORE_INTERFACE, data is NULL */
 200
 201/* for QUIRK_MIDI_NOVATION and _RAW, data is NULL */
 202
 203/* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info
 204 * structure (out_cables and in_cables only) */
 205
 206/* for QUIRK_MIDI_CME, data is NULL */
 207
 208/*
 209 */
 210
 211#define combine_word(s)    ((*s) | ((unsigned int)(s)[1] << 8))
 212#define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))
 213#define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))
 214
 215unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
 216
 217void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
 218void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
 219
 220int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
 221                    __u8 request, __u8 requesttype, __u16 value, __u16 index,
 222                    void *data, __u16 size, int timeout);
 223
 224int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif);
 225void snd_usb_mixer_disconnect(struct list_head *p);
 226
 227int snd_usb_create_midi_interface(struct snd_usb_audio *chip, struct usb_interface *iface,
 228                                  const struct snd_usb_audio_quirk *quirk);
 229void snd_usbmidi_input_stop(struct list_head* p);
 230void snd_usbmidi_input_start(struct list_head* p);
 231void snd_usbmidi_disconnect(struct list_head *p);
 232
 233/*
 234 * retrieve usb_interface descriptor from the host interface
 235 * (conditional for compatibility with the older API)
 236 */
 237#ifndef get_iface_desc
 238#define get_iface_desc(iface)   (&(iface)->desc)
 239#define get_endpoint(alt,ep)    (&(alt)->endpoint[ep].desc)
 240#define get_ep_desc(ep)         (&(ep)->desc)
 241#define get_cfg_desc(cfg)       (&(cfg)->desc)
 242#endif
 243
 244#ifndef snd_usb_get_speed
 245#define snd_usb_get_speed(dev) ((dev)->speed)
 246#endif
 247
 248#endif /* __USBAUDIO_H */
 249