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 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 need_delayed_register:1; /* warn for delayed registration */ 40 unsigned int playback_first:1; /* for implicit fb: don't wait for the first capture URBs */ 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 struct list_head iface_ref_list; /* list of interface refcounts */ 50 int pcm_devs; 51 52 struct list_head midi_list; /* list of midi interfaces */ 53 54 struct list_head mixer_list; /* list of mixer interfaces */ 55 56 int setup; /* from the 'device_setup' module param */ 57 bool generic_implicit_fb; /* from the 'implicit_fb' module param */ 58 bool autoclock; /* from the 'autoclock' module param */ 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_IFACE_UNUSED ((void *)-1L) 66 67 #define usb_audio_err(chip, fmt, args...) \ 68 dev_err(&(chip)->dev->dev, fmt, ##args) 69 #define usb_audio_warn(chip, fmt, args...) \ 70 dev_warn(&(chip)->dev->dev, fmt, ##args) 71 #define usb_audio_info(chip, fmt, args...) \ 72 dev_info(&(chip)->dev->dev, fmt, ##args) 73 #define usb_audio_dbg(chip, fmt, args...) \ 74 dev_dbg(&(chip)->dev->dev, fmt, ##args) 75 76 /* 77 * Information about devices with broken descriptors 78 */ 79 80 /* special values for .ifnum */ 81 #define QUIRK_NODEV_INTERFACE -3 /* return -ENODEV */ 82 #define QUIRK_NO_INTERFACE -2 83 #define QUIRK_ANY_INTERFACE -1 84 85 enum 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 }; 112 113 struct 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)) 125 126 int snd_usb_lock_shutdown(struct snd_usb_audio *chip); 127 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip); 128 129 extern bool snd_usb_use_vmalloc; 130 extern bool snd_usb_skip_validation; 131 132 #endif /* __USBAUDIO_H */ 133