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 #define MAX_CARD_INTERFACES 16 23 24 struct 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 struct mutex mutex; 31 unsigned int system_suspend; 32 atomic_t active; 33 atomic_t shutdown; 34 atomic_t usage_count; 35 wait_queue_head_t shutdown_wait; 36 unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */ 37 unsigned int tx_length_quirk:1; /* Put length specifier in transfers */ 38 unsigned int setup_fmt_after_resume_quirk:1; /* setup the format to interface after resume */ 39 unsigned int need_delayed_register:1; /* warn for delayed registration */ 40 int num_interfaces; 41 int num_suspended_intf; 42 int sample_rate_read_error; 43 44 int badd_profile; /* UAC3 BADD profile */ 45 46 struct list_head pcm_list; /* list of pcm streams */ 47 struct list_head ep_list; /* list of audio-related endpoints */ 48 int pcm_devs; 49 50 struct list_head midi_list; /* list of midi interfaces */ 51 52 struct list_head mixer_list; /* list of mixer interfaces */ 53 54 int setup; /* from the 'device_setup' module param */ 55 bool autoclock; /* from the 'autoclock' module param */ 56 bool keep_iface; /* keep interface/altset after closing 57 * or parameter change 58 */ 59 60 struct usb_host_interface *ctrl_intf; /* the audio control interface */ 61 struct media_device *media_dev; 62 struct media_intf_devnode *ctl_intf_media_devnode; 63 }; 64 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) 73 74 /* 75 * Information about devices with broken descriptors 76 */ 77 78 /* special values for .ifnum */ 79 #define QUIRK_NO_INTERFACE -2 80 #define QUIRK_ANY_INTERFACE -1 81 82 enum quirk_type { 83 QUIRK_IGNORE_INTERFACE, 84 QUIRK_COMPOSITE, 85 QUIRK_AUTODETECT, 86 QUIRK_MIDI_STANDARD_INTERFACE, 87 QUIRK_MIDI_FIXED_ENDPOINT, 88 QUIRK_MIDI_YAMAHA, 89 QUIRK_MIDI_ROLAND, 90 QUIRK_MIDI_MIDIMAN, 91 QUIRK_MIDI_NOVATION, 92 QUIRK_MIDI_RAW_BYTES, 93 QUIRK_MIDI_EMAGIC, 94 QUIRK_MIDI_CME, 95 QUIRK_MIDI_AKAI, 96 QUIRK_MIDI_US122L, 97 QUIRK_MIDI_FTDI, 98 QUIRK_MIDI_CH345, 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, 104 QUIRK_SETUP_FMT_AFTER_RESUME, 105 106 QUIRK_TYPE_COUNT 107 }; 108 109 struct snd_usb_audio_quirk { 110 const char *vendor_name; 111 const char *product_name; 112 const char *profile_name; /* override the card->longname */ 113 int16_t ifnum; 114 uint16_t type; 115 bool shares_media_device; 116 const void *data; 117 }; 118 119 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) 120 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) 121 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) 122 123 int snd_usb_lock_shutdown(struct snd_usb_audio *chip); 124 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip); 125 126 extern bool snd_usb_use_vmalloc; 127 extern bool snd_usb_skip_validation; 128 129 #endif /* __USBAUDIO_H */ 130