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TOMOYO Linux Cross Reference
Linux/sound/usb/usbaudio.h

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  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 
 33 struct 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         int nrpacks;                    /* from the 'nrpacks' 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 /*
 66  * Information about devices with broken descriptors
 67  */
 68 
 69 /* special values for .ifnum */
 70 #define QUIRK_NO_INTERFACE              -2
 71 #define QUIRK_ANY_INTERFACE             -1
 72 
 73 enum quirk_type {
 74         QUIRK_IGNORE_INTERFACE,
 75         QUIRK_COMPOSITE,
 76         QUIRK_AUTODETECT,
 77         QUIRK_MIDI_STANDARD_INTERFACE,
 78         QUIRK_MIDI_FIXED_ENDPOINT,
 79         QUIRK_MIDI_YAMAHA,
 80         QUIRK_MIDI_ROLAND,
 81         QUIRK_MIDI_MIDIMAN,
 82         QUIRK_MIDI_NOVATION,
 83         QUIRK_MIDI_RAW_BYTES,
 84         QUIRK_MIDI_EMAGIC,
 85         QUIRK_MIDI_CME,
 86         QUIRK_MIDI_AKAI,
 87         QUIRK_MIDI_US122L,
 88         QUIRK_MIDI_FTDI,
 89         QUIRK_MIDI_CH345,
 90         QUIRK_AUDIO_STANDARD_INTERFACE,
 91         QUIRK_AUDIO_FIXED_ENDPOINT,
 92         QUIRK_AUDIO_EDIROL_UAXX,
 93         QUIRK_AUDIO_ALIGN_TRANSFER,
 94         QUIRK_AUDIO_STANDARD_MIXER,
 95 
 96         QUIRK_TYPE_COUNT
 97 };
 98 
 99 struct snd_usb_audio_quirk {
100         const char *vendor_name;
101         const char *product_name;
102         int16_t ifnum;
103         uint16_t type;
104         const void *data;
105 };
106 
107 #define combine_word(s)    ((*(s)) | ((unsigned int)(s)[1] << 8))
108 #define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))
109 #define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))
110 
111 #endif /* __USBAUDIO_H */
112 

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