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 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 quirk_flags; 38 unsigned int need_delayed_register:1; /* warn for delayed registration */ 39 int num_interfaces; 40 int last_iface; 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 struct list_head iface_ref_list; /* list of interface refcounts */ 49 struct list_head clock_ref_list; /* list of clock 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 bool lowlatency; /* from the 'lowlatency' module param */ 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_err_ratelimited(chip, fmt, args...) \ 71 dev_err_ratelimited(&(chip)->dev->dev, fmt, ##args) 72 #define usb_audio_warn(chip, fmt, args...) \ 73 dev_warn(&(chip)->dev->dev, fmt, ##args) 74 #define usb_audio_info(chip, fmt, args...) \ 75 dev_info(&(chip)->dev->dev, fmt, ##args) 76 #define usb_audio_dbg(chip, fmt, args...) \ 77 dev_dbg(&(chip)->dev->dev, fmt, ##args) 78 79 /* 80 * Information about devices with broken descriptors 81 */ 82 83 /* special values for .ifnum */ 84 #define QUIRK_NODEV_INTERFACE -3 /* return -ENODEV */ 85 #define QUIRK_NO_INTERFACE -2 86 #define QUIRK_ANY_INTERFACE -1 87 88 enum quirk_type { 89 QUIRK_IGNORE_INTERFACE, 90 QUIRK_COMPOSITE, 91 QUIRK_AUTODETECT, 92 QUIRK_MIDI_STANDARD_INTERFACE, 93 QUIRK_MIDI_FIXED_ENDPOINT, 94 QUIRK_MIDI_YAMAHA, 95 QUIRK_MIDI_ROLAND, 96 QUIRK_MIDI_MIDIMAN, 97 QUIRK_MIDI_NOVATION, 98 QUIRK_MIDI_RAW_BYTES, 99 QUIRK_MIDI_EMAGIC, 100 QUIRK_MIDI_CME, 101 QUIRK_MIDI_AKAI, 102 QUIRK_MIDI_US122L, 103 QUIRK_MIDI_FTDI, 104 QUIRK_MIDI_CH345, 105 QUIRK_AUDIO_STANDARD_INTERFACE, 106 QUIRK_AUDIO_FIXED_ENDPOINT, 107 QUIRK_AUDIO_EDIROL_UAXX, 108 QUIRK_AUDIO_STANDARD_MIXER, 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 const void *data; 119 }; 120 121 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) 122 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) 123 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) 124 125 int snd_usb_lock_shutdown(struct snd_usb_audio *chip); 126 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip); 127 128 extern bool snd_usb_use_vmalloc; 129 extern bool snd_usb_skip_validation; 130 131 /* 132 * Driver behavior quirk flags, stored in chip->quirk_flags 133 * 134 * QUIRK_FLAG_GET_SAMPLE_RATE: 135 * Skip reading sample rate for devices, as some devices behave inconsistently 136 * or return error 137 * QUIRK_FLAG_SHARE_MEDIA_DEVICE: 138 * Create Media Controller API entries 139 * QUIRK_FLAG_ALIGN_TRANSFER: 140 * Allow alignment on audio sub-slot (channel samples) rather than on audio 141 * slots (audio frames) 142 * QUIRK_TX_LENGTH: 143 * Add length specifier to transfers 144 * QUIRK_FLAG_PLAYBACK_FIRST: 145 * Start playback stream at first even in implement feedback mode 146 * QUIRK_FLAG_SKIP_CLOCK_SELECTOR: 147 * Skip clock selector setup; the device may reset to invalid state 148 * QUIRK_FLAG_IGNORE_CLOCK_SOURCE: 149 * Ignore errors from clock source search; i.e. hardcoded clock 150 * QUIRK_FLAG_ITF_USB_DSD_DAC: 151 * Indicates the device is for ITF-USB DSD based DACs that need a vendor cmd 152 * to switch between PCM and native DSD mode 153 * QUIRK_FLAG_CTL_MSG_DELAY: 154 * Add a delay of 20ms at each control message handling 155 * QUIRK_FLAG_CTL_MSG_DELAY_1M: 156 * Add a delay of 1-2ms at each control message handling 157 * QUIRK_FLAG_CTL_MSG_DELAY_5M: 158 * Add a delay of 5-6ms at each control message handling 159 * QUIRK_FLAG_IFACE_DELAY: 160 * Add a delay of 50ms at each interface setup 161 * QUIRK_FLAG_VALIDATE_RATES: 162 * Perform sample rate validations at probe 163 * QUIRK_FLAG_DISABLE_AUTOSUSPEND: 164 * Disable runtime PM autosuspend 165 * QUIRK_FLAG_IGNORE_CTL_ERROR: 166 * Ignore errors for mixer access 167 * QUIRK_FLAG_DSD_RAW: 168 * Support generic DSD raw U32_BE format 169 * QUIRK_FLAG_SET_IFACE_FIRST: 170 * Set up the interface at first like UAC1 171 * QUIRK_FLAG_GENERIC_IMPLICIT_FB 172 * Apply the generic implicit feedback sync mode (same as implicit_fb=1 option) 173 * QUIRK_FLAG_SKIP_IMPLICIT_FB 174 * Don't apply implicit feedback sync mode 175 * QUIRK_FLAG_IFACE_SKIP_CLOSE 176 * Don't closed interface during setting sample rate 177 * QUIRK_FLAG_FORCE_IFACE_RESET 178 * Force an interface reset whenever stopping & restarting a stream 179 * (e.g. after xrun) 180 * QUIRK_FLAG_FIXED_RATE 181 * Do not set PCM rate (frequency) when only one rate is available 182 * for the given endpoint. 183 */ 184 185 #define QUIRK_FLAG_GET_SAMPLE_RATE (1U << 0) 186 #define QUIRK_FLAG_SHARE_MEDIA_DEVICE (1U << 1) 187 #define QUIRK_FLAG_ALIGN_TRANSFER (1U << 2) 188 #define QUIRK_FLAG_TX_LENGTH (1U << 3) 189 #define QUIRK_FLAG_PLAYBACK_FIRST (1U << 4) 190 #define QUIRK_FLAG_SKIP_CLOCK_SELECTOR (1U << 5) 191 #define QUIRK_FLAG_IGNORE_CLOCK_SOURCE (1U << 6) 192 #define QUIRK_FLAG_ITF_USB_DSD_DAC (1U << 7) 193 #define QUIRK_FLAG_CTL_MSG_DELAY (1U << 8) 194 #define QUIRK_FLAG_CTL_MSG_DELAY_1M (1U << 9) 195 #define QUIRK_FLAG_CTL_MSG_DELAY_5M (1U << 10) 196 #define QUIRK_FLAG_IFACE_DELAY (1U << 11) 197 #define QUIRK_FLAG_VALIDATE_RATES (1U << 12) 198 #define QUIRK_FLAG_DISABLE_AUTOSUSPEND (1U << 13) 199 #define QUIRK_FLAG_IGNORE_CTL_ERROR (1U << 14) 200 #define QUIRK_FLAG_DSD_RAW (1U << 15) 201 #define QUIRK_FLAG_SET_IFACE_FIRST (1U << 16) 202 #define QUIRK_FLAG_GENERIC_IMPLICIT_FB (1U << 17) 203 #define QUIRK_FLAG_SKIP_IMPLICIT_FB (1U << 18) 204 #define QUIRK_FLAG_IFACE_SKIP_CLOSE (1U << 19) 205 #define QUIRK_FLAG_FORCE_IFACE_RESET (1U << 20) 206 #define QUIRK_FLAG_FIXED_RATE (1U << 21) 207 208 #endif /* __USBAUDIO_H */ 209