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 struct snd_usb_audio { 33 int index; 34 struct usb_device *dev; 35 struct snd_card *card; 36 u32 usb_id; 37 int shutdown; 38 unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */ 39 int num_interfaces; 40 int num_suspended_intf; 41 42 /* for audio class v2 */ 43 int clock_id; 44 45 struct list_head pcm_list; /* list of pcm streams */ 46 int pcm_devs; 47 48 struct list_head midi_list; /* list of midi interfaces */ 49 50 struct list_head mixer_list; /* list of mixer interfaces */ 51 }; 52 53 /* 54 * Information about devices with broken descriptors 55 */ 56 57 /* special values for .ifnum */ 58 #define QUIRK_NO_INTERFACE -2 59 #define QUIRK_ANY_INTERFACE -1 60 61 enum quirk_type { 62 QUIRK_IGNORE_INTERFACE, 63 QUIRK_COMPOSITE, 64 QUIRK_MIDI_STANDARD_INTERFACE, 65 QUIRK_MIDI_FIXED_ENDPOINT, 66 QUIRK_MIDI_YAMAHA, 67 QUIRK_MIDI_MIDIMAN, 68 QUIRK_MIDI_NOVATION, 69 QUIRK_MIDI_FASTLANE, 70 QUIRK_MIDI_EMAGIC, 71 QUIRK_MIDI_CME, 72 QUIRK_MIDI_US122L, 73 QUIRK_AUDIO_STANDARD_INTERFACE, 74 QUIRK_AUDIO_FIXED_ENDPOINT, 75 QUIRK_AUDIO_EDIROL_UAXX, 76 QUIRK_AUDIO_ALIGN_TRANSFER, 77 78 QUIRK_TYPE_COUNT 79 }; 80 81 struct snd_usb_audio_quirk { 82 const char *vendor_name; 83 const char *product_name; 84 int16_t ifnum; 85 uint16_t type; 86 const void *data; 87 }; 88 89 /* 90 */ 91 92 /*E-mu USB samplerate control quirk*/ 93 enum { 94 EMU_QUIRK_SR_44100HZ = 0, 95 EMU_QUIRK_SR_48000HZ, 96 EMU_QUIRK_SR_88200HZ, 97 EMU_QUIRK_SR_96000HZ, 98 EMU_QUIRK_SR_176400HZ, 99 EMU_QUIRK_SR_192000HZ 100 }; 101 102 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) 103 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) 104 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) 105 106 unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size); 107 108 void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype); 109 void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype); 110 111 int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, 112 __u8 request, __u8 requesttype, __u16 value, __u16 index, 113 void *data, __u16 size, int timeout); 114 115 /* 116 * retrieve usb_interface descriptor from the host interface 117 * (conditional for compatibility with the older API) 118 */ 119 #ifndef get_iface_desc 120 #define get_iface_desc(iface) (&(iface)->desc) 121 #define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc) 122 #define get_ep_desc(ep) (&(ep)->desc) 123 #define get_cfg_desc(cfg) (&(cfg)->desc) 124 #endif 125 126 #ifndef snd_usb_get_speed 127 #define snd_usb_get_speed(dev) ((dev)->speed) 128 #endif 129 130 #endif /* __USBAUDIO_H */ 131