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) (((unsigned int)(vendor) << 16) | (product)) 12#define USB_ID_VENDOR(id) ((id) >> 16) 13#define USB_ID_PRODUCT(id) ((u16)(id)) 14 15/* 16 * 17 */ 18 19struct media_device; 20struct media_intf_devnode; 21 22#define MAX_CARD_INTERFACES 16 23 24struct snd_usb_audio { 25 int index; 26 struct usb_device *dev; 27 struct snd_card *card; 28 struct usb_interface *intf[MAX_CARD_INTERFACES]; 29 u32 usb_id; 30 uint16_t quirk_type; 31 struct mutex mutex; 32 unsigned int system_suspend; 33 atomic_t active; 34 atomic_t shutdown; 35 atomic_t usage_count; 36 wait_queue_head_t shutdown_wait; 37 unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */ 38 unsigned int tx_length_quirk:1; /* Put length specifier in transfers */ 39 unsigned int setup_fmt_after_resume_quirk:1; /* setup the format to interface after resume */ 40 unsigned int need_delayed_register:1; /* warn for delayed registration */ 41 int num_interfaces; 42 int num_suspended_intf; 43 int sample_rate_read_error; 44 45 int badd_profile; /* UAC3 BADD profile */ 46 47 struct list_head pcm_list; /* list of pcm streams */ 48 struct list_head ep_list; /* list of audio-related endpoints */ 49 int pcm_devs; 50 51 struct list_head midi_list; /* list of midi interfaces */ 52 53 struct list_head mixer_list; /* list of mixer interfaces */ 54 55 int setup; /* from the 'device_setup' module param */ 56 bool autoclock; /* from the 'autoclock' module param */ 57 bool keep_iface; /* keep interface/altset after closing 58 * or parameter change 59 */ 60 61 struct usb_host_interface *ctrl_intf; /* the audio control interface */ 62 struct media_device *media_dev; 63 struct media_intf_devnode *ctl_intf_media_devnode; 64}; 65 66#define USB_AUDIO_IFACE_UNUSED ((void *)-1L) 67 68#define usb_audio_err(chip, fmt, args...) \ 69 dev_err(&(chip)->dev->dev, fmt, ##args) 70#define usb_audio_warn(chip, fmt, args...) \ 71 dev_warn(&(chip)->dev->dev, fmt, ##args) 72#define usb_audio_info(chip, fmt, args...) \ 73 dev_info(&(chip)->dev->dev, fmt, ##args) 74#define usb_audio_dbg(chip, fmt, args...) \ 75 dev_dbg(&(chip)->dev->dev, fmt, ##args) 76 77/* 78 * Information about devices with broken descriptors 79 */ 80 81/* special values for .ifnum */ 82#define QUIRK_NO_INTERFACE -2 83#define QUIRK_ANY_INTERFACE -1 84 85enum quirk_type { 86 QUIRK_IGNORE_INTERFACE, 87 QUIRK_COMPOSITE, 88 QUIRK_AUTODETECT, 89 QUIRK_MIDI_STANDARD_INTERFACE, 90 QUIRK_MIDI_FIXED_ENDPOINT, 91 QUIRK_MIDI_YAMAHA, 92 QUIRK_MIDI_ROLAND, 93 QUIRK_MIDI_MIDIMAN, 94 QUIRK_MIDI_NOVATION, 95 QUIRK_MIDI_RAW_BYTES, 96 QUIRK_MIDI_EMAGIC, 97 QUIRK_MIDI_CME, 98 QUIRK_MIDI_AKAI, 99 QUIRK_MIDI_US122L, 100 QUIRK_MIDI_FTDI, 101 QUIRK_MIDI_CH345, 102 QUIRK_AUDIO_STANDARD_INTERFACE, 103 QUIRK_AUDIO_FIXED_ENDPOINT, 104 QUIRK_AUDIO_EDIROL_UAXX, 105 QUIRK_AUDIO_ALIGN_TRANSFER, 106 QUIRK_AUDIO_STANDARD_MIXER, 107 QUIRK_SETUP_FMT_AFTER_RESUME, 108 QUIRK_SETUP_DISABLE_AUTOSUSPEND, 109 110 QUIRK_TYPE_COUNT 111}; 112 113struct snd_usb_audio_quirk { 114 const char *vendor_name; 115 const char *product_name; 116 int16_t ifnum; 117 uint16_t type; 118 bool shares_media_device; 119 const void *data; 120}; 121 122#define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) 123#define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) 124#define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) 125 126int snd_usb_lock_shutdown(struct snd_usb_audio *chip); 127void snd_usb_unlock_shutdown(struct snd_usb_audio *chip); 128 129extern bool snd_usb_use_vmalloc; 130extern bool snd_usb_skip_validation; 131 132#endif /* __USBAUDIO_H */ 133