1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 #ifndef __USBAUDIO_H 3 #define __USBAUDIO_H 4 /* 5 * (Tentative) USB Audio Driver for ALSA 6 * 7 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> 8 */ 9 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)) 14 15 /* 16 * 17 */ 18 19 struct media_device; 20 struct media_intf_devnode; 21 22 struct snd_usb_audio { 23 int index; 24 struct usb_device *dev; 25 struct snd_card *card; 26 struct usb_interface *pm_intf; 27 u32 usb_id; 28 struct mutex mutex; 29 unsigned int autosuspended:1; 30 atomic_t active; 31 atomic_t shutdown; 32 atomic_t usage_count; 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 37 int num_interfaces; 38 int num_suspended_intf; 39 int sample_rate_read_error; 40 41 int badd_profile; /* UAC3 BADD profile */ 42 43 struct list_head pcm_list; /* list of pcm streams */ 44 struct list_head ep_list; /* list of audio-related endpoints */ 45 int pcm_devs; 46 47 struct list_head midi_list; /* list of midi interfaces */ 48 49 struct list_head mixer_list; /* list of mixer interfaces */ 50 51 int setup; /* from the 'device_setup' module param */ 52 bool autoclock; /* from the 'autoclock' module param */ 53 bool keep_iface; /* keep interface/altset after closing 54 * or parameter change 55 */ 56 57 struct usb_host_interface *ctrl_intf; /* the audio control interface */ 58 struct media_device *media_dev; 59 struct media_intf_devnode *ctl_intf_media_devnode; 60 }; 61 62 #define usb_audio_err(chip, fmt, args...) \ 63 dev_err(&(chip)->dev->dev, fmt, ##args) 64 #define usb_audio_warn(chip, fmt, args...) \ 65 dev_warn(&(chip)->dev->dev, fmt, ##args) 66 #define usb_audio_info(chip, fmt, args...) \ 67 dev_info(&(chip)->dev->dev, fmt, ##args) 68 #define usb_audio_dbg(chip, fmt, args...) \ 69 dev_dbg(&(chip)->dev->dev, fmt, ##args) 70 71 /* 72 * Information about devices with broken descriptors 73 */ 74 75 /* special values for .ifnum */ 76 #define QUIRK_NO_INTERFACE -2 77 #define QUIRK_ANY_INTERFACE -1 78 79 enum quirk_type { 80 QUIRK_IGNORE_INTERFACE, 81 QUIRK_COMPOSITE, 82 QUIRK_AUTODETECT, 83 QUIRK_MIDI_STANDARD_INTERFACE, 84 QUIRK_MIDI_FIXED_ENDPOINT, 85 QUIRK_MIDI_YAMAHA, 86 QUIRK_MIDI_ROLAND, 87 QUIRK_MIDI_MIDIMAN, 88 QUIRK_MIDI_NOVATION, 89 QUIRK_MIDI_RAW_BYTES, 90 QUIRK_MIDI_EMAGIC, 91 QUIRK_MIDI_CME, 92 QUIRK_MIDI_AKAI, 93 QUIRK_MIDI_US122L, 94 QUIRK_MIDI_FTDI, 95 QUIRK_MIDI_CH345, 96 QUIRK_AUDIO_STANDARD_INTERFACE, 97 QUIRK_AUDIO_FIXED_ENDPOINT, 98 QUIRK_AUDIO_EDIROL_UAXX, 99 QUIRK_AUDIO_ALIGN_TRANSFER, 100 QUIRK_AUDIO_STANDARD_MIXER, 101 102 QUIRK_TYPE_COUNT 103 }; 104 105 struct snd_usb_audio_quirk { 106 const char *vendor_name; 107 const char *product_name; 108 const char *profile_name; /* override the card->longname */ 109 int16_t ifnum; 110 uint16_t type; 111 bool shares_media_device; 112 const void *data; 113 }; 114 115 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) 116 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) 117 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) 118 119 int snd_usb_lock_shutdown(struct snd_usb_audio *chip); 120 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip); 121 122 extern bool snd_usb_use_vmalloc; 123 124 #endif /* __USBAUDIO_H */ 125