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/* handling of USB vendor/product ID pairs as 32-bit numbers */
  25#define USB_ID(vendor, product) (((vendor) << 16) | (product))
  26#define USB_ID_VENDOR(id) ((id) >> 16)
  27#define USB_ID_PRODUCT(id) ((u16)(id))
  28
  29/*
  30 *
  31 */
  32
  33struct snd_usb_audio {
  34        int index;
  35        struct usb_device *dev;
  36        struct snd_card *card;
  37        struct usb_interface *pm_intf;
  38        u32 usb_id;
  39        struct mutex mutex;
  40        struct rw_semaphore shutdown_rwsem;
  41        unsigned int shutdown:1;
  42        unsigned int probing:1;
  43        unsigned int in_pm:1;
  44        unsigned int autosuspended:1;   
  45        unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */
  46        
  47        int num_interfaces;
  48        int num_suspended_intf;
  49
  50        struct list_head pcm_list;      /* list of pcm streams */
  51        struct list_head ep_list;       /* list of audio-related endpoints */
  52        int pcm_devs;
  53
  54        struct list_head midi_list;     /* list of midi interfaces */
  55
  56        struct list_head mixer_list;    /* list of mixer interfaces */
  57
  58        int setup;                      /* from the 'device_setup' module param */
  59        bool autoclock;                 /* from the 'autoclock' module param */
  60
  61        struct usb_host_interface *ctrl_intf;   /* the audio control interface */
  62};
  63
  64#define usb_audio_err(chip, fmt, args...) \
  65        dev_err(&(chip)->dev->dev, fmt, ##args)
  66#define usb_audio_warn(chip, fmt, args...) \
  67        dev_warn(&(chip)->dev->dev, fmt, ##args)
  68#define usb_audio_info(chip, fmt, args...) \
  69        dev_info(&(chip)->dev->dev, fmt, ##args)
  70#define usb_audio_dbg(chip, fmt, args...) \
  71        dev_dbg(&(chip)->dev->dev, fmt, ##args)
  72
  73/*
  74 * Information about devices with broken descriptors
  75 */
  76
  77/* special values for .ifnum */
  78#define QUIRK_NO_INTERFACE              -2
  79#define QUIRK_ANY_INTERFACE             -1
  80
  81enum quirk_type {
  82        QUIRK_IGNORE_INTERFACE,
  83        QUIRK_COMPOSITE,
  84        QUIRK_AUTODETECT,
  85        QUIRK_MIDI_STANDARD_INTERFACE,
  86        QUIRK_MIDI_FIXED_ENDPOINT,
  87        QUIRK_MIDI_YAMAHA,
  88        QUIRK_MIDI_ROLAND,
  89        QUIRK_MIDI_MIDIMAN,
  90        QUIRK_MIDI_NOVATION,
  91        QUIRK_MIDI_RAW_BYTES,
  92        QUIRK_MIDI_EMAGIC,
  93        QUIRK_MIDI_CME,
  94        QUIRK_MIDI_AKAI,
  95        QUIRK_MIDI_US122L,
  96        QUIRK_MIDI_FTDI,
  97        QUIRK_AUDIO_STANDARD_INTERFACE,
  98        QUIRK_AUDIO_FIXED_ENDPOINT,
  99        QUIRK_AUDIO_EDIROL_UAXX,
 100        QUIRK_AUDIO_ALIGN_TRANSFER,
 101        QUIRK_AUDIO_STANDARD_MIXER,
 102
 103        QUIRK_TYPE_COUNT
 104};
 105
 106struct snd_usb_audio_quirk {
 107        const char *vendor_name;
 108        const char *product_name;
 109        int16_t ifnum;
 110        uint16_t type;
 111        const void *data;
 112};
 113
 114#define combine_word(s)    ((*(s)) | ((unsigned int)(s)[1] << 8))
 115#define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))
 116#define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))
 117
 118#endif /* __USBAUDIO_H */
 119