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 shutdown_mutex; 40 unsigned int shutdown:1; 41 unsigned int probing:1; 42 unsigned int autosuspended:1; 43 unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */ 44 45 int num_interfaces; 46 int num_suspended_intf; 47 48 struct list_head pcm_list; /* list of pcm streams */ 49 int pcm_devs; 50 51 struct list_head midi_list; /* list of midi interfaces */ 52 53 struct list_head mixer_list; /* list of mixer interfaces */ 54 55 int setup; /* from the 'device_setup' module param */ 56 int nrpacks; /* from the 'nrpacks' module param */ 57 int async_unlink; /* from the 'async_unlink' module param */ 58 59 struct usb_host_interface *ctrl_intf; /* the audio control interface */ 60 }; 61 62 /* 63 * Information about devices with broken descriptors 64 */ 65 66 /* special values for .ifnum */ 67 #define QUIRK_NO_INTERFACE -2 68 #define QUIRK_ANY_INTERFACE -1 69 70 enum quirk_type { 71 QUIRK_IGNORE_INTERFACE, 72 QUIRK_COMPOSITE, 73 QUIRK_MIDI_STANDARD_INTERFACE, 74 QUIRK_MIDI_FIXED_ENDPOINT, 75 QUIRK_MIDI_YAMAHA, 76 QUIRK_MIDI_MIDIMAN, 77 QUIRK_MIDI_NOVATION, 78 QUIRK_MIDI_RAW_BYTES, 79 QUIRK_MIDI_EMAGIC, 80 QUIRK_MIDI_CME, 81 QUIRK_MIDI_AKAI, 82 QUIRK_MIDI_US122L, 83 QUIRK_AUDIO_STANDARD_INTERFACE, 84 QUIRK_AUDIO_FIXED_ENDPOINT, 85 QUIRK_AUDIO_EDIROL_UAXX, 86 QUIRK_AUDIO_ALIGN_TRANSFER, 87 88 QUIRK_TYPE_COUNT 89 }; 90 91 struct snd_usb_audio_quirk { 92 const char *vendor_name; 93 const char *product_name; 94 int16_t ifnum; 95 uint16_t type; 96 const void *data; 97 }; 98 99 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) 100 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) 101 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) 102 103 #endif /* __USBAUDIO_H */ 104