4 * (Tentative) USB Audio Driver for ALSA
6 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
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.
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.
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
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))
33 struct snd_usb_audio {
35 struct usb_device *dev;
36 struct snd_card *card;
37 struct usb_interface *pm_intf;
40 unsigned int autosuspended:1;
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 */
49 int num_suspended_intf;
51 struct list_head pcm_list; /* list of pcm streams */
52 struct list_head ep_list; /* list of audio-related endpoints */
55 struct list_head midi_list; /* list of midi interfaces */
57 struct list_head mixer_list; /* list of mixer interfaces */
59 int setup; /* from the 'device_setup' module param */
60 bool autoclock; /* from the 'autoclock' module param */
62 struct usb_host_interface *ctrl_intf; /* the audio control interface */
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)
75 * Information about devices with broken descriptors
78 /* special values for .ifnum */
79 #define QUIRK_NO_INTERFACE -2
80 #define QUIRK_ANY_INTERFACE -1
83 QUIRK_IGNORE_INTERFACE,
86 QUIRK_MIDI_STANDARD_INTERFACE,
87 QUIRK_MIDI_FIXED_ENDPOINT,
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,
108 struct snd_usb_audio_quirk {
109 const char *vendor_name;
110 const char *product_name;
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))
120 int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
121 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
123 #endif /* __USBAUDIO_H */