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 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 int sample_rate_read_error; 51 52 struct list_head pcm_list; /* list of pcm streams */ 53 struct list_head ep_list; /* list of audio-related endpoints */ 54 int pcm_devs; 55 56 struct list_head midi_list; /* list of midi interfaces */ 57 58 struct list_head mixer_list; /* list of mixer interfaces */ 59 60 int setup; /* from the 'device_setup' module param */ 61 bool autoclock; /* from the 'autoclock' module param */ 62 63 struct usb_host_interface *ctrl_intf; /* the audio control interface */ 64 }; 65 66 #define usb_audio_err(chip, fmt, args...) \ 67 dev_err(&(chip)->dev->dev, fmt, ##args) 68 #define usb_audio_warn(chip, fmt, args...) \ 69 dev_warn(&(chip)->dev->dev, fmt, ##args) 70 #define usb_audio_info(chip, fmt, args...) \ 71 dev_info(&(chip)->dev->dev, fmt, ##args) 72 #define usb_audio_dbg(chip, fmt, args...) \ 73 dev_dbg(&(chip)->dev->dev, fmt, ##args) 74 75 /* 76 * Information about devices with broken descriptors 77 */ 78 79 /* special values for .ifnum */ 80 #define QUIRK_NO_INTERFACE -2 81 #define QUIRK_ANY_INTERFACE -1 82 83 enum quirk_type { 84 QUIRK_IGNORE_INTERFACE, 85 QUIRK_COMPOSITE, 86 QUIRK_AUTODETECT, 87 QUIRK_MIDI_STANDARD_INTERFACE, 88 QUIRK_MIDI_FIXED_ENDPOINT, 89 QUIRK_MIDI_YAMAHA, 90 QUIRK_MIDI_ROLAND, 91 QUIRK_MIDI_MIDIMAN, 92 QUIRK_MIDI_NOVATION, 93 QUIRK_MIDI_RAW_BYTES, 94 QUIRK_MIDI_EMAGIC, 95 QUIRK_MIDI_CME, 96 QUIRK_MIDI_AKAI, 97 QUIRK_MIDI_US122L, 98 QUIRK_MIDI_FTDI, 99 QUIRK_MIDI_CH345, 100 QUIRK_AUDIO_STANDARD_INTERFACE, 101 QUIRK_AUDIO_FIXED_ENDPOINT, 102 QUIRK_AUDIO_EDIROL_UAXX, 103 QUIRK_AUDIO_ALIGN_TRANSFER, 104 QUIRK_AUDIO_STANDARD_MIXER, 105 106 QUIRK_TYPE_COUNT 107 }; 108 109 struct snd_usb_audio_quirk { 110 const char *vendor_name; 111 const char *product_name; 112 int16_t ifnum; 113 uint16_t type; 114 const void *data; 115 }; 116 117 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) 118 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) 119 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) 120 121 int snd_usb_lock_shutdown(struct snd_usb_audio *chip); 122 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip); 123 124 #endif /* __USBAUDIO_H */ 125