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        unsigned int autosuspended:1;   
  41        atomic_t active;
  42        atomic_t shutdown;
  43        atomic_t usage_count;
  44        wait_queue_head_t shutdown_wait;
  45        unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */
  46        unsigned int tx_length_quirk:1; /* Put length specifier in transfers */
  47        
  48        int num_interfaces;
  49        int num_suspended_intf;
  50
  51        struct list_head pcm_list;      /* list of pcm streams */
  52        struct list_head ep_list;       /* list of audio-related endpoints */
  53        int pcm_devs;
  54
  55        struct list_head midi_list;     /* list of midi interfaces */
  56
  57        struct list_head mixer_list;    /* list of mixer interfaces */
  58
  59        int setup;                      /* from the 'device_setup' module param */
  60        bool autoclock;                 /* from the 'autoclock' module param */
  61
  62        struct usb_host_interface *ctrl_intf;   /* the audio control interface */
  63};
  64
  65#define usb_audio_err(chip, fmt, args...) \
  66        dev_err(&(chip)->dev->dev, fmt, ##args)
  67#define usb_audio_warn(chip, fmt, args...) \
  68        dev_warn(&(chip)->dev->dev, fmt, ##args)
  69#define usb_audio_info(chip, fmt, args...) \
  70        dev_info(&(chip)->dev->dev, fmt, ##args)
  71#define usb_audio_dbg(chip, fmt, args...) \
  72        dev_dbg(&(chip)->dev->dev, fmt, ##args)
  73
  74/*
  75 * Information about devices with broken descriptors
  76 */
  77
  78/* special values for .ifnum */
  79#define QUIRK_NO_INTERFACE              -2
  80#define QUIRK_ANY_INTERFACE             -1
  81
  82enum quirk_type {
  83        QUIRK_IGNORE_INTERFACE,
  84        QUIRK_COMPOSITE,
  85        QUIRK_AUTODETECT,
  86        QUIRK_MIDI_STANDARD_INTERFACE,
  87        QUIRK_MIDI_FIXED_ENDPOINT,
  88        QUIRK_MIDI_YAMAHA,
  89        QUIRK_MIDI_ROLAND,
  90        QUIRK_MIDI_MIDIMAN,
  91        QUIRK_MIDI_NOVATION,
  92        QUIRK_MIDI_RAW_BYTES,
  93        QUIRK_MIDI_EMAGIC,
  94        QUIRK_MIDI_CME,
  95        QUIRK_MIDI_AKAI,
  96        QUIRK_MIDI_US122L,
  97        QUIRK_MIDI_FTDI,
  98        QUIRK_MIDI_CH345,
  99        QUIRK_AUDIO_STANDARD_INTERFACE,
 100        QUIRK_AUDIO_FIXED_ENDPOINT,
 101        QUIRK_AUDIO_EDIROL_UAXX,
 102        QUIRK_AUDIO_ALIGN_TRANSFER,
 103        QUIRK_AUDIO_STANDARD_MIXER,
 104
 105        QUIRK_TYPE_COUNT
 106};
 107
 108struct snd_usb_audio_quirk {
 109        const char *vendor_name;
 110        const char *product_name;
 111        int16_t ifnum;
 112        uint16_t type;
 113        const void *data;
 114};
 115
 116#define combine_word(s)    ((*(s)) | ((unsigned int)(s)[1] << 8))
 117#define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))
 118#define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))
 119
 120int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
 121void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
 122
 123#endif /* __USBAUDIO_H */
 124