1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * (Tentative) USB Audio Driver for ALSA
10 /* handling of USB vendor/product ID pairs as 32-bit numbers */
11 #define USB_ID(vendor, product) (((vendor) << 16) | (product))
12 #define USB_ID_VENDOR(id) ((id) >> 16)
13 #define USB_ID_PRODUCT(id) ((u16)(id))
20 struct media_intf_devnode;
22 struct snd_usb_audio {
24 struct usb_device *dev;
25 struct snd_card *card;
26 struct usb_interface *pm_intf;
29 unsigned int autosuspended:1;
33 wait_queue_head_t shutdown_wait;
34 unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */
35 unsigned int tx_length_quirk:1; /* Put length specifier in transfers */
36 unsigned int setup_fmt_after_resume_quirk:1; /* setup the format to interface after resume */
37 unsigned int need_delayed_register:1; /* warn for delayed registration */
39 int num_suspended_intf;
40 int sample_rate_read_error;
42 int badd_profile; /* UAC3 BADD profile */
44 struct list_head pcm_list; /* list of pcm streams */
45 struct list_head ep_list; /* list of audio-related endpoints */
48 struct list_head midi_list; /* list of midi interfaces */
50 struct list_head mixer_list; /* list of mixer interfaces */
52 int setup; /* from the 'device_setup' module param */
53 bool autoclock; /* from the 'autoclock' module param */
54 bool keep_iface; /* keep interface/altset after closing
58 struct usb_host_interface *ctrl_intf; /* the audio control interface */
59 struct media_device *media_dev;
60 struct media_intf_devnode *ctl_intf_media_devnode;
63 #define usb_audio_err(chip, fmt, args...) \
64 dev_err(&(chip)->dev->dev, fmt, ##args)
65 #define usb_audio_warn(chip, fmt, args...) \
66 dev_warn(&(chip)->dev->dev, fmt, ##args)
67 #define usb_audio_info(chip, fmt, args...) \
68 dev_info(&(chip)->dev->dev, fmt, ##args)
69 #define usb_audio_dbg(chip, fmt, args...) \
70 dev_dbg(&(chip)->dev->dev, fmt, ##args)
73 * Information about devices with broken descriptors
76 /* special values for .ifnum */
77 #define QUIRK_NO_INTERFACE -2
78 #define QUIRK_ANY_INTERFACE -1
81 QUIRK_IGNORE_INTERFACE,
84 QUIRK_MIDI_STANDARD_INTERFACE,
85 QUIRK_MIDI_FIXED_ENDPOINT,
97 QUIRK_AUDIO_STANDARD_INTERFACE,
98 QUIRK_AUDIO_FIXED_ENDPOINT,
99 QUIRK_AUDIO_EDIROL_UAXX,
100 QUIRK_AUDIO_ALIGN_TRANSFER,
101 QUIRK_AUDIO_STANDARD_MIXER,
102 QUIRK_SETUP_FMT_AFTER_RESUME,
107 struct snd_usb_audio_quirk {
108 const char *vendor_name;
109 const char *product_name;
110 const char *profile_name; /* override the card->longname */
113 bool shares_media_device;
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))
121 int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
122 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
124 extern bool snd_usb_use_vmalloc;
125 extern bool snd_usb_skip_validation;
127 #endif /* __USBAUDIO_H */