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))
34 struct media_intf_devnode;
36 struct snd_usb_audio {
38 struct usb_device *dev;
39 struct snd_card *card;
40 struct usb_interface *pm_intf;
43 unsigned int autosuspended:1;
47 wait_queue_head_t shutdown_wait;
48 unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */
49 unsigned int tx_length_quirk:1; /* Put length specifier in transfers */
52 int num_suspended_intf;
53 int sample_rate_read_error;
55 int badd_profile; /* UAC3 BADD profile */
57 struct list_head pcm_list; /* list of pcm streams */
58 struct list_head ep_list; /* list of audio-related endpoints */
61 struct list_head midi_list; /* list of midi interfaces */
63 struct list_head mixer_list; /* list of mixer interfaces */
65 int setup; /* from the 'device_setup' module param */
66 bool autoclock; /* from the 'autoclock' module param */
67 bool keep_iface; /* keep interface/altset after closing
71 struct usb_host_interface *ctrl_intf; /* the audio control interface */
72 struct media_device *media_dev;
73 struct media_intf_devnode *ctl_intf_media_devnode;
76 #define usb_audio_err(chip, fmt, args...) \
77 dev_err(&(chip)->dev->dev, fmt, ##args)
78 #define usb_audio_warn(chip, fmt, args...) \
79 dev_warn(&(chip)->dev->dev, fmt, ##args)
80 #define usb_audio_info(chip, fmt, args...) \
81 dev_info(&(chip)->dev->dev, fmt, ##args)
82 #define usb_audio_dbg(chip, fmt, args...) \
83 dev_dbg(&(chip)->dev->dev, fmt, ##args)
86 * Information about devices with broken descriptors
89 /* special values for .ifnum */
90 #define QUIRK_NO_INTERFACE -2
91 #define QUIRK_ANY_INTERFACE -1
94 QUIRK_IGNORE_INTERFACE,
97 QUIRK_MIDI_STANDARD_INTERFACE,
98 QUIRK_MIDI_FIXED_ENDPOINT,
103 QUIRK_MIDI_RAW_BYTES,
110 QUIRK_AUDIO_STANDARD_INTERFACE,
111 QUIRK_AUDIO_FIXED_ENDPOINT,
112 QUIRK_AUDIO_EDIROL_UAXX,
113 QUIRK_AUDIO_ALIGN_TRANSFER,
114 QUIRK_AUDIO_STANDARD_MIXER,
119 struct snd_usb_audio_quirk {
120 const char *vendor_name;
121 const char *product_name;
122 const char *profile_name; /* override the card->longname */
125 bool shares_media_device;
129 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8))
130 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
131 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
133 int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
134 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
136 extern bool snd_usb_use_vmalloc;
138 #endif /* __USBAUDIO_H */