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 need_delayed_register:1; /* warn for delayed registration */ 39 int num_interfaces; 40 int num_suspended_intf; 41 int sample_rate_read_error; 42 43 int badd_profile; /* UAC3 BADD profile */ 44 45 struct list_head pcm_list; /* list of pcm streams */ 46 struct list_head ep_list; /* list of audio-related endpoints */ 47 struct list_head iface_ref_list; /* list of interface refcounts */ 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 generic_implicit_fb; /* from the 'implicit_fb' module param */ 56 bool autoclock; /* from the 'autoclock' module param */ 57 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; 61 }; 62 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) 71 72 /* 73 * Information about devices with broken descriptors 74 */ 75 76 /* special values for .ifnum */ 77 #define QUIRK_NO_INTERFACE -2 78 #define QUIRK_ANY_INTERFACE -1 79 80 enum quirk_type { 81 QUIRK_IGNORE_INTERFACE, 82 QUIRK_COMPOSITE, 83 QUIRK_AUTODETECT, 84 QUIRK_MIDI_STANDARD_INTERFACE, 85 QUIRK_MIDI_FIXED_ENDPOINT, 86 QUIRK_MIDI_YAMAHA, 87 QUIRK_MIDI_ROLAND, 88 QUIRK_MIDI_MIDIMAN, 89 QUIRK_MIDI_NOVATION, 90 QUIRK_MIDI_RAW_BYTES, 91 QUIRK_MIDI_EMAGIC, 92 QUIRK_MIDI_CME, 93 QUIRK_MIDI_AKAI, 94 QUIRK_MIDI_US122L, 95 QUIRK_MIDI_FTDI, 96 QUIRK_MIDI_CH345, 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, 103 QUIRK_SETUP_DISABLE_AUTOSUSPEND, 104 105 QUIRK_TYPE_COUNT 106 }; 107 108 struct snd_usb_audio_quirk { 109 const char *vendor_name; 110 const char *product_name; 111 int16_t ifnum; 112 uint16_t type; 113 bool shares_media_device; 114 const void *data; 115 }; 116 117 #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)) 120 121 int snd_usb_lock_shutdown(struct snd_usb_audio *chip); 122 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip); 123 124 extern bool snd_usb_use_vmalloc; 125 extern bool snd_usb_skip_validation; 126 127 #endif /* __USBAUDIO_H */ 128