David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * (Tentative) USB Audio Driver for ALSA |
| 4 | * |
| 5 | * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> |
| 6 | * |
| 7 | * Many codes borrowed from audio.c by |
| 8 | * Alan Cox (alan@lxorguk.ukuu.org.uk) |
| 9 | * Thomas Sailer (sailer@ife.ee.ethz.ch) |
| 10 | * |
| 11 | * Audio Class 3.0 support by Ruslan Bilovol <ruslan.bilovol@gmail.com> |
| 12 | * |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 13 | * NOTES: |
| 14 | * |
| 15 | * - the linked URBs would be preferred but not used so far because of |
| 16 | * the instability of unlinking. |
| 17 | * - type II is not supported properly. there is no device which supports |
| 18 | * this type *correctly*. SB extigy looks as if it supports, but it's |
| 19 | * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream). |
| 20 | */ |
| 21 | |
| 22 | |
| 23 | #include <linux/bitops.h> |
| 24 | #include <linux/init.h> |
| 25 | #include <linux/list.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/string.h> |
| 28 | #include <linux/ctype.h> |
| 29 | #include <linux/usb.h> |
| 30 | #include <linux/moduleparam.h> |
| 31 | #include <linux/mutex.h> |
| 32 | #include <linux/usb/audio.h> |
| 33 | #include <linux/usb/audio-v2.h> |
| 34 | #include <linux/usb/audio-v3.h> |
| 35 | #include <linux/module.h> |
| 36 | |
| 37 | #include <sound/control.h> |
| 38 | #include <sound/core.h> |
| 39 | #include <sound/info.h> |
| 40 | #include <sound/pcm.h> |
| 41 | #include <sound/pcm_params.h> |
| 42 | #include <sound/initval.h> |
| 43 | |
| 44 | #include "usbaudio.h" |
| 45 | #include "card.h" |
| 46 | #include "midi.h" |
| 47 | #include "mixer.h" |
| 48 | #include "proc.h" |
| 49 | #include "quirks.h" |
| 50 | #include "endpoint.h" |
| 51 | #include "helper.h" |
| 52 | #include "debug.h" |
| 53 | #include "pcm.h" |
| 54 | #include "format.h" |
| 55 | #include "power.h" |
| 56 | #include "stream.h" |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 57 | #include "media.h" |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 58 | |
| 59 | MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); |
| 60 | MODULE_DESCRIPTION("USB Audio"); |
| 61 | MODULE_LICENSE("GPL"); |
| 62 | MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}"); |
| 63 | |
| 64 | |
| 65 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
| 66 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
| 67 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */ |
| 68 | /* Vendor/product IDs for this card */ |
| 69 | static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; |
| 70 | static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; |
| 71 | static int device_setup[SNDRV_CARDS]; /* device parameter for this card */ |
| 72 | static bool ignore_ctl_error; |
| 73 | static bool autoclock = true; |
| 74 | static char *quirk_alias[SNDRV_CARDS]; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 75 | static char *delayed_register[SNDRV_CARDS]; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 76 | |
| 77 | bool snd_usb_use_vmalloc = true; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 78 | bool snd_usb_skip_validation; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 79 | |
| 80 | module_param_array(index, int, NULL, 0444); |
| 81 | MODULE_PARM_DESC(index, "Index value for the USB audio adapter."); |
| 82 | module_param_array(id, charp, NULL, 0444); |
| 83 | MODULE_PARM_DESC(id, "ID string for the USB audio adapter."); |
| 84 | module_param_array(enable, bool, NULL, 0444); |
| 85 | MODULE_PARM_DESC(enable, "Enable USB audio adapter."); |
| 86 | module_param_array(vid, int, NULL, 0444); |
| 87 | MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device."); |
| 88 | module_param_array(pid, int, NULL, 0444); |
| 89 | MODULE_PARM_DESC(pid, "Product ID for the USB audio device."); |
| 90 | module_param_array(device_setup, int, NULL, 0444); |
| 91 | MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); |
| 92 | module_param(ignore_ctl_error, bool, 0444); |
| 93 | MODULE_PARM_DESC(ignore_ctl_error, |
| 94 | "Ignore errors from USB controller for mixer interfaces."); |
| 95 | module_param(autoclock, bool, 0444); |
| 96 | MODULE_PARM_DESC(autoclock, "Enable auto-clock selection for UAC2 devices (default: yes)."); |
| 97 | module_param_array(quirk_alias, charp, NULL, 0444); |
| 98 | MODULE_PARM_DESC(quirk_alias, "Quirk aliases, e.g. 0123abcd:5678beef."); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 99 | module_param_array(delayed_register, charp, NULL, 0444); |
| 100 | MODULE_PARM_DESC(delayed_register, "Quirk for delayed registration, given by id:iface, e.g. 0123abcd:4."); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 101 | module_param_named(use_vmalloc, snd_usb_use_vmalloc, bool, 0444); |
| 102 | MODULE_PARM_DESC(use_vmalloc, "Use vmalloc for PCM intermediate buffers (default: yes)."); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 103 | module_param_named(skip_validation, snd_usb_skip_validation, bool, 0444); |
| 104 | MODULE_PARM_DESC(skip_validation, "Skip unit descriptor validation (default: no)."); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 105 | |
| 106 | /* |
| 107 | * we keep the snd_usb_audio_t instances by ourselves for merging |
| 108 | * the all interfaces on the same card as one sound device. |
| 109 | */ |
| 110 | |
| 111 | static DEFINE_MUTEX(register_mutex); |
| 112 | static struct snd_usb_audio *usb_chip[SNDRV_CARDS]; |
| 113 | static struct usb_driver usb_audio_driver; |
| 114 | |
| 115 | /* |
| 116 | * disconnect streams |
| 117 | * called from usb_audio_disconnect() |
| 118 | */ |
| 119 | static void snd_usb_stream_disconnect(struct snd_usb_stream *as) |
| 120 | { |
| 121 | int idx; |
| 122 | struct snd_usb_substream *subs; |
| 123 | |
| 124 | for (idx = 0; idx < 2; idx++) { |
| 125 | subs = &as->substream[idx]; |
| 126 | if (!subs->num_formats) |
| 127 | continue; |
| 128 | subs->interface = -1; |
| 129 | subs->data_endpoint = NULL; |
| 130 | subs->sync_endpoint = NULL; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int interface) |
| 135 | { |
| 136 | struct usb_device *dev = chip->dev; |
| 137 | struct usb_host_interface *alts; |
| 138 | struct usb_interface_descriptor *altsd; |
| 139 | struct usb_interface *iface = usb_ifnum_to_if(dev, interface); |
| 140 | |
| 141 | if (!iface) { |
| 142 | dev_err(&dev->dev, "%u:%d : does not exist\n", |
| 143 | ctrlif, interface); |
| 144 | return -EINVAL; |
| 145 | } |
| 146 | |
| 147 | alts = &iface->altsetting[0]; |
| 148 | altsd = get_iface_desc(alts); |
| 149 | |
| 150 | /* |
| 151 | * Android with both accessory and audio interfaces enabled gets the |
| 152 | * interface numbers wrong. |
| 153 | */ |
| 154 | if ((chip->usb_id == USB_ID(0x18d1, 0x2d04) || |
| 155 | chip->usb_id == USB_ID(0x18d1, 0x2d05)) && |
| 156 | interface == 0 && |
| 157 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && |
| 158 | altsd->bInterfaceSubClass == USB_SUBCLASS_VENDOR_SPEC) { |
| 159 | interface = 2; |
| 160 | iface = usb_ifnum_to_if(dev, interface); |
| 161 | if (!iface) |
| 162 | return -EINVAL; |
| 163 | alts = &iface->altsetting[0]; |
| 164 | altsd = get_iface_desc(alts); |
| 165 | } |
| 166 | |
| 167 | if (usb_interface_claimed(iface)) { |
| 168 | dev_dbg(&dev->dev, "%d:%d: skipping, already claimed\n", |
| 169 | ctrlif, interface); |
| 170 | return -EINVAL; |
| 171 | } |
| 172 | |
| 173 | if ((altsd->bInterfaceClass == USB_CLASS_AUDIO || |
| 174 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) && |
| 175 | altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) { |
| 176 | int err = __snd_usbmidi_create(chip->card, iface, |
| 177 | &chip->midi_list, NULL, |
| 178 | chip->usb_id); |
| 179 | if (err < 0) { |
| 180 | dev_err(&dev->dev, |
| 181 | "%u:%d: cannot create sequencer device\n", |
| 182 | ctrlif, interface); |
| 183 | return -EINVAL; |
| 184 | } |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 185 | return usb_driver_claim_interface(&usb_audio_driver, iface, |
| 186 | USB_AUDIO_IFACE_UNUSED); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && |
| 190 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || |
| 191 | altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) { |
| 192 | dev_dbg(&dev->dev, |
| 193 | "%u:%d: skipping non-supported interface %d\n", |
| 194 | ctrlif, interface, altsd->bInterfaceClass); |
| 195 | /* skip non-supported classes */ |
| 196 | return -EINVAL; |
| 197 | } |
| 198 | |
| 199 | if (snd_usb_get_speed(dev) == USB_SPEED_LOW) { |
| 200 | dev_err(&dev->dev, "low speed audio streaming not supported\n"); |
| 201 | return -EINVAL; |
| 202 | } |
| 203 | |
| 204 | if (! snd_usb_parse_audio_interface(chip, interface)) { |
| 205 | usb_set_interface(dev, interface, 0); /* reset the current interface */ |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 206 | return usb_driver_claim_interface(&usb_audio_driver, iface, |
| 207 | USB_AUDIO_IFACE_UNUSED); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | /* |
| 214 | * parse audio control descriptor and create pcm/midi streams |
| 215 | */ |
| 216 | static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) |
| 217 | { |
| 218 | struct usb_device *dev = chip->dev; |
| 219 | struct usb_host_interface *host_iface; |
| 220 | struct usb_interface_descriptor *altsd; |
| 221 | int i, protocol; |
| 222 | |
| 223 | /* find audiocontrol interface */ |
| 224 | host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0]; |
| 225 | altsd = get_iface_desc(host_iface); |
| 226 | protocol = altsd->bInterfaceProtocol; |
| 227 | |
| 228 | switch (protocol) { |
| 229 | default: |
| 230 | dev_warn(&dev->dev, |
| 231 | "unknown interface protocol %#02x, assuming v1\n", |
| 232 | protocol); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 233 | fallthrough; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 234 | |
| 235 | case UAC_VERSION_1: { |
| 236 | struct uac1_ac_header_descriptor *h1; |
| 237 | int rest_bytes; |
| 238 | |
| 239 | h1 = snd_usb_find_csint_desc(host_iface->extra, |
| 240 | host_iface->extralen, |
| 241 | NULL, UAC_HEADER); |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 242 | if (!h1 || h1->bLength < sizeof(*h1)) { |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 243 | dev_err(&dev->dev, "cannot find UAC_HEADER\n"); |
| 244 | return -EINVAL; |
| 245 | } |
| 246 | |
| 247 | rest_bytes = (void *)(host_iface->extra + |
| 248 | host_iface->extralen) - (void *)h1; |
| 249 | |
| 250 | /* just to be sure -- this shouldn't hit at all */ |
| 251 | if (rest_bytes <= 0) { |
| 252 | dev_err(&dev->dev, "invalid control header\n"); |
| 253 | return -EINVAL; |
| 254 | } |
| 255 | |
| 256 | if (rest_bytes < sizeof(*h1)) { |
| 257 | dev_err(&dev->dev, "too short v1 buffer descriptor\n"); |
| 258 | return -EINVAL; |
| 259 | } |
| 260 | |
| 261 | if (!h1->bInCollection) { |
| 262 | dev_info(&dev->dev, "skipping empty audio interface (v1)\n"); |
| 263 | return -EINVAL; |
| 264 | } |
| 265 | |
| 266 | if (rest_bytes < h1->bLength) { |
| 267 | dev_err(&dev->dev, "invalid buffer length (v1)\n"); |
| 268 | return -EINVAL; |
| 269 | } |
| 270 | |
| 271 | if (h1->bLength < sizeof(*h1) + h1->bInCollection) { |
| 272 | dev_err(&dev->dev, "invalid UAC_HEADER (v1)\n"); |
| 273 | return -EINVAL; |
| 274 | } |
| 275 | |
| 276 | for (i = 0; i < h1->bInCollection; i++) |
| 277 | snd_usb_create_stream(chip, ctrlif, h1->baInterfaceNr[i]); |
| 278 | |
| 279 | break; |
| 280 | } |
| 281 | |
| 282 | case UAC_VERSION_2: |
| 283 | case UAC_VERSION_3: { |
| 284 | struct usb_interface_assoc_descriptor *assoc = |
| 285 | usb_ifnum_to_if(dev, ctrlif)->intf_assoc; |
| 286 | |
| 287 | if (!assoc) { |
| 288 | /* |
| 289 | * Firmware writers cannot count to three. So to find |
| 290 | * the IAD on the NuForce UDH-100, also check the next |
| 291 | * interface. |
| 292 | */ |
| 293 | struct usb_interface *iface = |
| 294 | usb_ifnum_to_if(dev, ctrlif + 1); |
| 295 | if (iface && |
| 296 | iface->intf_assoc && |
| 297 | iface->intf_assoc->bFunctionClass == USB_CLASS_AUDIO && |
| 298 | iface->intf_assoc->bFunctionProtocol == UAC_VERSION_2) |
| 299 | assoc = iface->intf_assoc; |
| 300 | } |
| 301 | |
| 302 | if (!assoc) { |
| 303 | dev_err(&dev->dev, "Audio class v2/v3 interfaces need an interface association\n"); |
| 304 | return -EINVAL; |
| 305 | } |
| 306 | |
| 307 | if (protocol == UAC_VERSION_3) { |
| 308 | int badd = assoc->bFunctionSubClass; |
| 309 | |
| 310 | if (badd != UAC3_FUNCTION_SUBCLASS_FULL_ADC_3_0 && |
| 311 | (badd < UAC3_FUNCTION_SUBCLASS_GENERIC_IO || |
| 312 | badd > UAC3_FUNCTION_SUBCLASS_SPEAKERPHONE)) { |
| 313 | dev_err(&dev->dev, |
| 314 | "Unsupported UAC3 BADD profile\n"); |
| 315 | return -EINVAL; |
| 316 | } |
| 317 | |
| 318 | chip->badd_profile = badd; |
| 319 | } |
| 320 | |
| 321 | for (i = 0; i < assoc->bInterfaceCount; i++) { |
| 322 | int intf = assoc->bFirstInterface + i; |
| 323 | |
| 324 | if (intf != ctrlif) |
| 325 | snd_usb_create_stream(chip, ctrlif, intf); |
| 326 | } |
| 327 | |
| 328 | break; |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | /* |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 336 | * Profile name preset table |
| 337 | */ |
| 338 | struct usb_audio_device_name { |
| 339 | u32 id; |
| 340 | const char *vendor_name; |
| 341 | const char *product_name; |
| 342 | const char *profile_name; /* override card->longname */ |
| 343 | }; |
| 344 | |
| 345 | #define PROFILE_NAME(vid, pid, vendor, product, profile) \ |
| 346 | { .id = USB_ID(vid, pid), .vendor_name = (vendor), \ |
| 347 | .product_name = (product), .profile_name = (profile) } |
| 348 | #define DEVICE_NAME(vid, pid, vendor, product) \ |
| 349 | PROFILE_NAME(vid, pid, vendor, product, NULL) |
| 350 | |
| 351 | /* vendor/product and profile name presets, sorted in device id order */ |
| 352 | static const struct usb_audio_device_name usb_audio_names[] = { |
| 353 | /* HP Thunderbolt Dock Audio Headset */ |
| 354 | PROFILE_NAME(0x03f0, 0x0269, "HP", "Thunderbolt Dock Audio Headset", |
| 355 | "HP-Thunderbolt-Dock-Audio-Headset"), |
| 356 | /* HP Thunderbolt Dock Audio Module */ |
| 357 | PROFILE_NAME(0x03f0, 0x0567, "HP", "Thunderbolt Dock Audio Module", |
| 358 | "HP-Thunderbolt-Dock-Audio-Module"), |
| 359 | |
| 360 | /* Two entries for Gigabyte TRX40 Aorus Master: |
| 361 | * TRX40 Aorus Master has two USB-audio devices, one for the front |
| 362 | * headphone with ESS SABRE9218 DAC chip, while another for the rest |
| 363 | * I/O (the rear panel and the front mic) with Realtek ALC1220-VB. |
| 364 | * Here we provide two distinct names for making UCM profiles easier. |
| 365 | */ |
| 366 | PROFILE_NAME(0x0414, 0xa000, "Gigabyte", "Aorus Master Front Headphone", |
| 367 | "Gigabyte-Aorus-Master-Front-Headphone"), |
| 368 | PROFILE_NAME(0x0414, 0xa001, "Gigabyte", "Aorus Master Main Audio", |
| 369 | "Gigabyte-Aorus-Master-Main-Audio"), |
| 370 | |
| 371 | /* Gigabyte TRX40 Aorus Pro WiFi */ |
| 372 | PROFILE_NAME(0x0414, 0xa002, |
| 373 | "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"), |
| 374 | |
| 375 | /* Creative/E-Mu devices */ |
| 376 | DEVICE_NAME(0x041e, 0x3010, "Creative Labs", "Sound Blaster MP3+"), |
| 377 | /* Creative/Toshiba Multimedia Center SB-0500 */ |
| 378 | DEVICE_NAME(0x041e, 0x3048, "Toshiba", "SB-0500"), |
| 379 | |
| 380 | DEVICE_NAME(0x046d, 0x0990, "Logitech, Inc.", "QuickCam Pro 9000"), |
| 381 | |
Olivier Deprez | 92d4c21 | 2022-12-06 15:05:30 +0100 | [diff] [blame] | 382 | /* ASUS ROG Zenith II: this machine has also two devices, one for |
| 383 | * the front headphone and another for the rest |
| 384 | */ |
| 385 | PROFILE_NAME(0x0b05, 0x1915, "ASUS", "Zenith II Front Headphone", |
| 386 | "Zenith-II-Front-Headphone"), |
| 387 | PROFILE_NAME(0x0b05, 0x1916, "ASUS", "Zenith II Main Audio", |
| 388 | "Zenith-II-Main-Audio"), |
| 389 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 390 | /* ASUS ROG Strix */ |
| 391 | PROFILE_NAME(0x0b05, 0x1917, |
| 392 | "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"), |
| 393 | /* ASUS PRIME TRX40 PRO-S */ |
| 394 | PROFILE_NAME(0x0b05, 0x1918, |
| 395 | "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"), |
| 396 | |
| 397 | /* Dell WD15 Dock */ |
| 398 | PROFILE_NAME(0x0bda, 0x4014, "Dell", "WD15 Dock", "Dell-WD15-Dock"), |
| 399 | /* Dell WD19 Dock */ |
| 400 | PROFILE_NAME(0x0bda, 0x402e, "Dell", "WD19 Dock", "Dell-WD15-Dock"), |
| 401 | |
| 402 | DEVICE_NAME(0x0ccd, 0x0028, "TerraTec", "Aureon5.1MkII"), |
| 403 | |
| 404 | /* |
| 405 | * The original product_name is "USB Sound Device", however this name |
| 406 | * is also used by the CM106 based cards, so make it unique. |
| 407 | */ |
| 408 | DEVICE_NAME(0x0d8c, 0x0102, NULL, "ICUSBAUDIO7D"), |
| 409 | DEVICE_NAME(0x0d8c, 0x0103, NULL, "Audio Advantage MicroII"), |
| 410 | |
| 411 | /* MSI TRX40 Creator */ |
| 412 | PROFILE_NAME(0x0db0, 0x0d64, |
| 413 | "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"), |
| 414 | /* MSI TRX40 */ |
| 415 | PROFILE_NAME(0x0db0, 0x543d, |
| 416 | "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"), |
| 417 | |
| 418 | /* Stanton/N2IT Final Scratch v1 device ('Scratchamp') */ |
| 419 | DEVICE_NAME(0x103d, 0x0100, "Stanton", "ScratchAmp"), |
| 420 | DEVICE_NAME(0x103d, 0x0101, "Stanton", "ScratchAmp"), |
| 421 | |
| 422 | /* aka. Serato Scratch Live DJ Box */ |
| 423 | DEVICE_NAME(0x13e5, 0x0001, "Rane", "SL-1"), |
| 424 | |
| 425 | /* Lenovo ThinkStation P620 Rear Line-in, Line-out and Microphone */ |
| 426 | PROFILE_NAME(0x17aa, 0x1046, "Lenovo", "ThinkStation P620 Rear", |
| 427 | "Lenovo-ThinkStation-P620-Rear"), |
| 428 | /* Lenovo ThinkStation P620 Internal Speaker + Front Headset */ |
| 429 | PROFILE_NAME(0x17aa, 0x104d, "Lenovo", "ThinkStation P620 Main", |
| 430 | "Lenovo-ThinkStation-P620-Main"), |
| 431 | |
| 432 | /* Asrock TRX40 Creator */ |
| 433 | PROFILE_NAME(0x26ce, 0x0a01, |
| 434 | "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"), |
| 435 | |
| 436 | { } /* terminator */ |
| 437 | }; |
| 438 | |
| 439 | static const struct usb_audio_device_name * |
| 440 | lookup_device_name(u32 id) |
| 441 | { |
| 442 | static const struct usb_audio_device_name *p; |
| 443 | |
| 444 | for (p = usb_audio_names; p->id; p++) |
| 445 | if (p->id == id) |
| 446 | return p; |
| 447 | return NULL; |
| 448 | } |
| 449 | |
| 450 | /* |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 451 | * free the chip instance |
| 452 | * |
| 453 | * here we have to do not much, since pcm and controls are already freed |
| 454 | * |
| 455 | */ |
| 456 | |
| 457 | static void snd_usb_audio_free(struct snd_card *card) |
| 458 | { |
| 459 | struct snd_usb_audio *chip = card->private_data; |
| 460 | struct snd_usb_endpoint *ep, *n; |
| 461 | |
| 462 | list_for_each_entry_safe(ep, n, &chip->ep_list, list) |
| 463 | snd_usb_endpoint_free(ep); |
| 464 | |
| 465 | mutex_destroy(&chip->mutex); |
| 466 | if (!atomic_read(&chip->shutdown)) |
| 467 | dev_set_drvdata(&chip->dev->dev, NULL); |
| 468 | } |
| 469 | |
| 470 | static void usb_audio_make_shortname(struct usb_device *dev, |
| 471 | struct snd_usb_audio *chip, |
| 472 | const struct snd_usb_audio_quirk *quirk) |
| 473 | { |
| 474 | struct snd_card *card = chip->card; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 475 | const struct usb_audio_device_name *preset; |
| 476 | const char *s = NULL; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 477 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 478 | preset = lookup_device_name(chip->usb_id); |
| 479 | if (preset && preset->product_name) |
| 480 | s = preset->product_name; |
| 481 | else if (quirk && quirk->product_name) |
| 482 | s = quirk->product_name; |
| 483 | if (s && *s) { |
| 484 | strlcpy(card->shortname, s, sizeof(card->shortname)); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 485 | return; |
| 486 | } |
| 487 | |
| 488 | /* retrieve the device string as shortname */ |
| 489 | if (!dev->descriptor.iProduct || |
| 490 | usb_string(dev, dev->descriptor.iProduct, |
| 491 | card->shortname, sizeof(card->shortname)) <= 0) { |
| 492 | /* no name available from anywhere, so use ID */ |
| 493 | sprintf(card->shortname, "USB Device %#04x:%#04x", |
| 494 | USB_ID_VENDOR(chip->usb_id), |
| 495 | USB_ID_PRODUCT(chip->usb_id)); |
| 496 | } |
| 497 | |
| 498 | strim(card->shortname); |
| 499 | } |
| 500 | |
| 501 | static void usb_audio_make_longname(struct usb_device *dev, |
| 502 | struct snd_usb_audio *chip, |
| 503 | const struct snd_usb_audio_quirk *quirk) |
| 504 | { |
| 505 | struct snd_card *card = chip->card; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 506 | const struct usb_audio_device_name *preset; |
| 507 | const char *s = NULL; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 508 | int len; |
| 509 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 510 | preset = lookup_device_name(chip->usb_id); |
| 511 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 512 | /* shortcut - if any pre-defined string is given, use it */ |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 513 | if (preset && preset->profile_name) |
| 514 | s = preset->profile_name; |
| 515 | if (s && *s) { |
| 516 | strlcpy(card->longname, s, sizeof(card->longname)); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 517 | return; |
| 518 | } |
| 519 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 520 | if (preset && preset->vendor_name) |
| 521 | s = preset->vendor_name; |
| 522 | else if (quirk && quirk->vendor_name) |
| 523 | s = quirk->vendor_name; |
| 524 | if (s && *s) { |
| 525 | len = strlcpy(card->longname, s, sizeof(card->longname)); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 526 | } else { |
| 527 | /* retrieve the vendor and device strings as longname */ |
| 528 | if (dev->descriptor.iManufacturer) |
| 529 | len = usb_string(dev, dev->descriptor.iManufacturer, |
| 530 | card->longname, sizeof(card->longname)); |
| 531 | else |
| 532 | len = 0; |
| 533 | /* we don't really care if there isn't any vendor string */ |
| 534 | } |
| 535 | if (len > 0) { |
| 536 | strim(card->longname); |
| 537 | if (*card->longname) |
| 538 | strlcat(card->longname, " ", sizeof(card->longname)); |
| 539 | } |
| 540 | |
| 541 | strlcat(card->longname, card->shortname, sizeof(card->longname)); |
| 542 | |
| 543 | len = strlcat(card->longname, " at ", sizeof(card->longname)); |
| 544 | |
| 545 | if (len < sizeof(card->longname)) |
| 546 | usb_make_path(dev, card->longname + len, sizeof(card->longname) - len); |
| 547 | |
| 548 | switch (snd_usb_get_speed(dev)) { |
| 549 | case USB_SPEED_LOW: |
| 550 | strlcat(card->longname, ", low speed", sizeof(card->longname)); |
| 551 | break; |
| 552 | case USB_SPEED_FULL: |
| 553 | strlcat(card->longname, ", full speed", sizeof(card->longname)); |
| 554 | break; |
| 555 | case USB_SPEED_HIGH: |
| 556 | strlcat(card->longname, ", high speed", sizeof(card->longname)); |
| 557 | break; |
| 558 | case USB_SPEED_SUPER: |
| 559 | strlcat(card->longname, ", super speed", sizeof(card->longname)); |
| 560 | break; |
| 561 | case USB_SPEED_SUPER_PLUS: |
| 562 | strlcat(card->longname, ", super speed plus", sizeof(card->longname)); |
| 563 | break; |
| 564 | default: |
| 565 | break; |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | /* |
| 570 | * create a chip instance and set its names. |
| 571 | */ |
| 572 | static int snd_usb_audio_create(struct usb_interface *intf, |
| 573 | struct usb_device *dev, int idx, |
| 574 | const struct snd_usb_audio_quirk *quirk, |
| 575 | unsigned int usb_id, |
| 576 | struct snd_usb_audio **rchip) |
| 577 | { |
| 578 | struct snd_card *card; |
| 579 | struct snd_usb_audio *chip; |
| 580 | int err; |
| 581 | char component[14]; |
| 582 | |
| 583 | *rchip = NULL; |
| 584 | |
| 585 | switch (snd_usb_get_speed(dev)) { |
| 586 | case USB_SPEED_LOW: |
| 587 | case USB_SPEED_FULL: |
| 588 | case USB_SPEED_HIGH: |
| 589 | case USB_SPEED_WIRELESS: |
| 590 | case USB_SPEED_SUPER: |
| 591 | case USB_SPEED_SUPER_PLUS: |
| 592 | break; |
| 593 | default: |
| 594 | dev_err(&dev->dev, "unknown device speed %d\n", snd_usb_get_speed(dev)); |
| 595 | return -ENXIO; |
| 596 | } |
| 597 | |
| 598 | err = snd_card_new(&intf->dev, index[idx], id[idx], THIS_MODULE, |
| 599 | sizeof(*chip), &card); |
| 600 | if (err < 0) { |
| 601 | dev_err(&dev->dev, "cannot create card instance %d\n", idx); |
| 602 | return err; |
| 603 | } |
| 604 | |
| 605 | chip = card->private_data; |
| 606 | mutex_init(&chip->mutex); |
| 607 | init_waitqueue_head(&chip->shutdown_wait); |
| 608 | chip->index = idx; |
| 609 | chip->dev = dev; |
| 610 | chip->card = card; |
| 611 | chip->setup = device_setup[idx]; |
| 612 | chip->autoclock = autoclock; |
| 613 | atomic_set(&chip->active, 1); /* avoid autopm during probing */ |
| 614 | atomic_set(&chip->usage_count, 0); |
| 615 | atomic_set(&chip->shutdown, 0); |
| 616 | |
| 617 | chip->usb_id = usb_id; |
| 618 | INIT_LIST_HEAD(&chip->pcm_list); |
| 619 | INIT_LIST_HEAD(&chip->ep_list); |
| 620 | INIT_LIST_HEAD(&chip->midi_list); |
| 621 | INIT_LIST_HEAD(&chip->mixer_list); |
| 622 | |
| 623 | card->private_free = snd_usb_audio_free; |
| 624 | |
| 625 | strcpy(card->driver, "USB-Audio"); |
| 626 | sprintf(component, "USB%04x:%04x", |
| 627 | USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); |
| 628 | snd_component_add(card, component); |
| 629 | |
| 630 | usb_audio_make_shortname(dev, chip, quirk); |
| 631 | usb_audio_make_longname(dev, chip, quirk); |
| 632 | |
| 633 | snd_usb_audio_create_proc(chip); |
| 634 | |
| 635 | *rchip = chip; |
| 636 | return 0; |
| 637 | } |
| 638 | |
| 639 | /* look for a matching quirk alias id */ |
| 640 | static bool get_alias_id(struct usb_device *dev, unsigned int *id) |
| 641 | { |
| 642 | int i; |
| 643 | unsigned int src, dst; |
| 644 | |
| 645 | for (i = 0; i < ARRAY_SIZE(quirk_alias); i++) { |
| 646 | if (!quirk_alias[i] || |
| 647 | sscanf(quirk_alias[i], "%x:%x", &src, &dst) != 2 || |
| 648 | src != *id) |
| 649 | continue; |
| 650 | dev_info(&dev->dev, |
| 651 | "device (%04x:%04x): applying quirk alias %04x:%04x\n", |
| 652 | USB_ID_VENDOR(*id), USB_ID_PRODUCT(*id), |
| 653 | USB_ID_VENDOR(dst), USB_ID_PRODUCT(dst)); |
| 654 | *id = dst; |
| 655 | return true; |
| 656 | } |
| 657 | |
| 658 | return false; |
| 659 | } |
| 660 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 661 | static bool check_delayed_register_option(struct snd_usb_audio *chip, int iface) |
| 662 | { |
| 663 | int i; |
| 664 | unsigned int id, inum; |
| 665 | |
| 666 | for (i = 0; i < ARRAY_SIZE(delayed_register); i++) { |
| 667 | if (delayed_register[i] && |
| 668 | sscanf(delayed_register[i], "%x:%x", &id, &inum) == 2 && |
| 669 | id == chip->usb_id) |
Olivier Deprez | 92d4c21 | 2022-12-06 15:05:30 +0100 | [diff] [blame] | 670 | return iface < inum; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 671 | } |
| 672 | |
| 673 | return false; |
| 674 | } |
| 675 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 676 | static const struct usb_device_id usb_audio_ids[]; /* defined below */ |
| 677 | |
| 678 | /* look for the corresponding quirk */ |
| 679 | static const struct snd_usb_audio_quirk * |
| 680 | get_alias_quirk(struct usb_device *dev, unsigned int id) |
| 681 | { |
| 682 | const struct usb_device_id *p; |
| 683 | |
| 684 | for (p = usb_audio_ids; p->match_flags; p++) { |
| 685 | /* FIXME: this checks only vendor:product pair in the list */ |
| 686 | if ((p->match_flags & USB_DEVICE_ID_MATCH_DEVICE) == |
| 687 | USB_DEVICE_ID_MATCH_DEVICE && |
| 688 | p->idVendor == USB_ID_VENDOR(id) && |
| 689 | p->idProduct == USB_ID_PRODUCT(id)) |
| 690 | return (const struct snd_usb_audio_quirk *)p->driver_info; |
| 691 | } |
| 692 | |
| 693 | return NULL; |
| 694 | } |
| 695 | |
| 696 | /* |
| 697 | * probe the active usb device |
| 698 | * |
| 699 | * note that this can be called multiple times per a device, when it |
| 700 | * includes multiple audio control interfaces. |
| 701 | * |
| 702 | * thus we check the usb device pointer and creates the card instance |
| 703 | * only at the first time. the successive calls of this function will |
| 704 | * append the pcm interface to the corresponding card. |
| 705 | */ |
| 706 | static int usb_audio_probe(struct usb_interface *intf, |
| 707 | const struct usb_device_id *usb_id) |
| 708 | { |
| 709 | struct usb_device *dev = interface_to_usbdev(intf); |
| 710 | const struct snd_usb_audio_quirk *quirk = |
| 711 | (const struct snd_usb_audio_quirk *)usb_id->driver_info; |
| 712 | struct snd_usb_audio *chip; |
| 713 | int i, err; |
| 714 | struct usb_host_interface *alts; |
| 715 | int ifnum; |
| 716 | u32 id; |
| 717 | |
| 718 | alts = &intf->altsetting[0]; |
| 719 | ifnum = get_iface_desc(alts)->bInterfaceNumber; |
| 720 | id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), |
| 721 | le16_to_cpu(dev->descriptor.idProduct)); |
| 722 | if (get_alias_id(dev, &id)) |
| 723 | quirk = get_alias_quirk(dev, id); |
| 724 | if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum) |
| 725 | return -ENXIO; |
| 726 | |
| 727 | err = snd_usb_apply_boot_quirk(dev, intf, quirk, id); |
| 728 | if (err < 0) |
| 729 | return err; |
| 730 | |
| 731 | /* |
| 732 | * found a config. now register to ALSA |
| 733 | */ |
| 734 | |
| 735 | /* check whether it's already registered */ |
| 736 | chip = NULL; |
| 737 | mutex_lock(®ister_mutex); |
| 738 | for (i = 0; i < SNDRV_CARDS; i++) { |
| 739 | if (usb_chip[i] && usb_chip[i]->dev == dev) { |
| 740 | if (atomic_read(&usb_chip[i]->shutdown)) { |
| 741 | dev_err(&dev->dev, "USB device is in the shutdown state, cannot create a card instance\n"); |
| 742 | err = -EIO; |
| 743 | goto __error; |
| 744 | } |
| 745 | chip = usb_chip[i]; |
| 746 | atomic_inc(&chip->active); /* avoid autopm */ |
| 747 | break; |
| 748 | } |
| 749 | } |
| 750 | if (! chip) { |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 751 | err = snd_usb_apply_boot_quirk_once(dev, intf, quirk, id); |
| 752 | if (err < 0) |
| 753 | goto __error; |
| 754 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 755 | /* it's a fresh one. |
| 756 | * now look for an empty slot and create a new card instance |
| 757 | */ |
| 758 | for (i = 0; i < SNDRV_CARDS; i++) |
| 759 | if (!usb_chip[i] && |
| 760 | (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) && |
| 761 | (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) { |
| 762 | if (enable[i]) { |
| 763 | err = snd_usb_audio_create(intf, dev, i, quirk, |
| 764 | id, &chip); |
| 765 | if (err < 0) |
| 766 | goto __error; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 767 | break; |
| 768 | } else if (vid[i] != -1 || pid[i] != -1) { |
| 769 | dev_info(&dev->dev, |
| 770 | "device (%04x:%04x) is disabled\n", |
| 771 | USB_ID_VENDOR(id), |
| 772 | USB_ID_PRODUCT(id)); |
| 773 | err = -ENOENT; |
| 774 | goto __error; |
| 775 | } |
| 776 | } |
| 777 | if (!chip) { |
| 778 | dev_err(&dev->dev, "no available usb audio device\n"); |
| 779 | err = -ENODEV; |
| 780 | goto __error; |
| 781 | } |
| 782 | } |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 783 | |
| 784 | if (chip->num_interfaces >= MAX_CARD_INTERFACES) { |
| 785 | dev_info(&dev->dev, "Too many interfaces assigned to the single USB-audio card\n"); |
| 786 | err = -EINVAL; |
| 787 | goto __error; |
| 788 | } |
| 789 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 790 | dev_set_drvdata(&dev->dev, chip); |
| 791 | |
| 792 | /* |
| 793 | * For devices with more than one control interface, we assume the |
| 794 | * first contains the audio controls. We might need a more specific |
| 795 | * check here in the future. |
| 796 | */ |
| 797 | if (!chip->ctrl_intf) |
| 798 | chip->ctrl_intf = alts; |
| 799 | |
| 800 | chip->txfr_quirk = 0; |
| 801 | err = 1; /* continue */ |
| 802 | if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) { |
| 803 | /* need some special handlings */ |
| 804 | err = snd_usb_create_quirk(chip, intf, &usb_audio_driver, quirk); |
| 805 | if (err < 0) |
| 806 | goto __error; |
| 807 | } |
| 808 | |
| 809 | if (err > 0) { |
| 810 | /* create normal USB audio interfaces */ |
| 811 | err = snd_usb_create_streams(chip, ifnum); |
| 812 | if (err < 0) |
| 813 | goto __error; |
| 814 | err = snd_usb_create_mixer(chip, ifnum, ignore_ctl_error); |
| 815 | if (err < 0) |
| 816 | goto __error; |
| 817 | } |
| 818 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 819 | if (chip->need_delayed_register) { |
| 820 | dev_info(&dev->dev, |
| 821 | "Found post-registration device assignment: %08x:%02x\n", |
| 822 | chip->usb_id, ifnum); |
| 823 | chip->need_delayed_register = false; /* clear again */ |
| 824 | } |
| 825 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 826 | /* we are allowed to call snd_card_register() many times, but first |
| 827 | * check to see if a device needs to skip it or do anything special |
| 828 | */ |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 829 | if (!snd_usb_registration_quirk(chip, ifnum) && |
| 830 | !check_delayed_register_option(chip, ifnum)) { |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 831 | err = snd_card_register(chip->card); |
| 832 | if (err < 0) |
| 833 | goto __error; |
| 834 | } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 835 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 836 | if (quirk && quirk->shares_media_device) { |
| 837 | /* don't want to fail when snd_media_device_create() fails */ |
| 838 | snd_media_device_create(chip, intf); |
| 839 | } |
| 840 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 841 | if (quirk) |
| 842 | chip->quirk_type = quirk->type; |
| 843 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 844 | usb_chip[chip->index] = chip; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 845 | chip->intf[chip->num_interfaces] = intf; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 846 | chip->num_interfaces++; |
| 847 | usb_set_intfdata(intf, chip); |
| 848 | atomic_dec(&chip->active); |
| 849 | mutex_unlock(®ister_mutex); |
| 850 | return 0; |
| 851 | |
| 852 | __error: |
| 853 | if (chip) { |
| 854 | /* chip->active is inside the chip->card object, |
| 855 | * decrement before memory is possibly returned. |
| 856 | */ |
| 857 | atomic_dec(&chip->active); |
| 858 | if (!chip->num_interfaces) |
| 859 | snd_card_free(chip->card); |
| 860 | } |
| 861 | mutex_unlock(®ister_mutex); |
| 862 | return err; |
| 863 | } |
| 864 | |
| 865 | /* |
| 866 | * we need to take care of counter, since disconnection can be called also |
| 867 | * many times as well as usb_audio_probe(). |
| 868 | */ |
| 869 | static void usb_audio_disconnect(struct usb_interface *intf) |
| 870 | { |
| 871 | struct snd_usb_audio *chip = usb_get_intfdata(intf); |
| 872 | struct snd_card *card; |
| 873 | struct list_head *p; |
| 874 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 875 | if (chip == USB_AUDIO_IFACE_UNUSED) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 876 | return; |
| 877 | |
| 878 | card = chip->card; |
| 879 | |
| 880 | mutex_lock(®ister_mutex); |
| 881 | if (atomic_inc_return(&chip->shutdown) == 1) { |
| 882 | struct snd_usb_stream *as; |
| 883 | struct snd_usb_endpoint *ep; |
| 884 | struct usb_mixer_interface *mixer; |
| 885 | |
| 886 | /* wait until all pending tasks done; |
| 887 | * they are protected by snd_usb_lock_shutdown() |
| 888 | */ |
| 889 | wait_event(chip->shutdown_wait, |
| 890 | !atomic_read(&chip->usage_count)); |
| 891 | snd_card_disconnect(card); |
| 892 | /* release the pcm resources */ |
| 893 | list_for_each_entry(as, &chip->pcm_list, list) { |
| 894 | snd_usb_stream_disconnect(as); |
| 895 | } |
| 896 | /* release the endpoint resources */ |
| 897 | list_for_each_entry(ep, &chip->ep_list, list) { |
| 898 | snd_usb_endpoint_release(ep); |
| 899 | } |
| 900 | /* release the midi resources */ |
| 901 | list_for_each(p, &chip->midi_list) { |
| 902 | snd_usbmidi_disconnect(p); |
| 903 | } |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 904 | /* |
| 905 | * Nice to check quirk && quirk->shares_media_device and |
| 906 | * then call the snd_media_device_delete(). Don't have |
| 907 | * access to the quirk here. snd_media_device_delete() |
| 908 | * accesses mixer_list |
| 909 | */ |
| 910 | snd_media_device_delete(chip); |
| 911 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 912 | /* release mixer resources */ |
| 913 | list_for_each_entry(mixer, &chip->mixer_list, list) { |
| 914 | snd_usb_mixer_disconnect(mixer); |
| 915 | } |
| 916 | } |
| 917 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 918 | if (chip->quirk_type == QUIRK_SETUP_DISABLE_AUTOSUSPEND) |
| 919 | usb_enable_autosuspend(interface_to_usbdev(intf)); |
| 920 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 921 | chip->num_interfaces--; |
| 922 | if (chip->num_interfaces <= 0) { |
| 923 | usb_chip[chip->index] = NULL; |
| 924 | mutex_unlock(®ister_mutex); |
| 925 | snd_card_free_when_closed(card); |
| 926 | } else { |
| 927 | mutex_unlock(®ister_mutex); |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | /* lock the shutdown (disconnect) task and autoresume */ |
| 932 | int snd_usb_lock_shutdown(struct snd_usb_audio *chip) |
| 933 | { |
| 934 | int err; |
| 935 | |
| 936 | atomic_inc(&chip->usage_count); |
| 937 | if (atomic_read(&chip->shutdown)) { |
| 938 | err = -EIO; |
| 939 | goto error; |
| 940 | } |
| 941 | err = snd_usb_autoresume(chip); |
| 942 | if (err < 0) |
| 943 | goto error; |
| 944 | return 0; |
| 945 | |
| 946 | error: |
| 947 | if (atomic_dec_and_test(&chip->usage_count)) |
| 948 | wake_up(&chip->shutdown_wait); |
| 949 | return err; |
| 950 | } |
| 951 | |
| 952 | /* autosuspend and unlock the shutdown */ |
| 953 | void snd_usb_unlock_shutdown(struct snd_usb_audio *chip) |
| 954 | { |
| 955 | snd_usb_autosuspend(chip); |
| 956 | if (atomic_dec_and_test(&chip->usage_count)) |
| 957 | wake_up(&chip->shutdown_wait); |
| 958 | } |
| 959 | |
| 960 | #ifdef CONFIG_PM |
| 961 | |
| 962 | int snd_usb_autoresume(struct snd_usb_audio *chip) |
| 963 | { |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 964 | int i, err; |
| 965 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 966 | if (atomic_read(&chip->shutdown)) |
| 967 | return -EIO; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 968 | if (atomic_inc_return(&chip->active) != 1) |
| 969 | return 0; |
| 970 | |
| 971 | for (i = 0; i < chip->num_interfaces; i++) { |
| 972 | err = usb_autopm_get_interface(chip->intf[i]); |
| 973 | if (err < 0) { |
| 974 | /* rollback */ |
| 975 | while (--i >= 0) |
| 976 | usb_autopm_put_interface(chip->intf[i]); |
| 977 | atomic_dec(&chip->active); |
| 978 | return err; |
| 979 | } |
| 980 | } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 981 | return 0; |
| 982 | } |
| 983 | |
| 984 | void snd_usb_autosuspend(struct snd_usb_audio *chip) |
| 985 | { |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 986 | int i; |
| 987 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 988 | if (atomic_read(&chip->shutdown)) |
| 989 | return; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame] | 990 | if (!atomic_dec_and_test(&chip->active)) |
| 991 | return; |
| 992 | |
| 993 | for (i = 0; i < chip->num_interfaces; i++) |
| 994 | usb_autopm_put_interface(chip->intf[i]); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 995 | } |
| 996 | |
| 997 | static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) |
| 998 | { |
| 999 | struct snd_usb_audio *chip = usb_get_intfdata(intf); |
| 1000 | struct snd_usb_stream *as; |
| 1001 | struct usb_mixer_interface *mixer; |
| 1002 | struct list_head *p; |
| 1003 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 1004 | if (chip == USB_AUDIO_IFACE_UNUSED) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1005 | return 0; |
| 1006 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1007 | if (!chip->num_suspended_intf++) { |
| 1008 | list_for_each_entry(as, &chip->pcm_list, list) { |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1009 | snd_usb_pcm_suspend(as); |
| 1010 | as->substream[0].need_setup_ep = |
| 1011 | as->substream[1].need_setup_ep = true; |
| 1012 | } |
| 1013 | list_for_each(p, &chip->midi_list) |
| 1014 | snd_usbmidi_suspend(p); |
| 1015 | list_for_each_entry(mixer, &chip->mixer_list, list) |
| 1016 | snd_usb_mixer_suspend(mixer); |
| 1017 | } |
| 1018 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 1019 | if (!PMSG_IS_AUTO(message) && !chip->system_suspend) { |
| 1020 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); |
| 1021 | chip->system_suspend = chip->num_suspended_intf; |
| 1022 | } |
| 1023 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1024 | return 0; |
| 1025 | } |
| 1026 | |
| 1027 | static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume) |
| 1028 | { |
| 1029 | struct snd_usb_audio *chip = usb_get_intfdata(intf); |
| 1030 | struct snd_usb_stream *as; |
| 1031 | struct usb_mixer_interface *mixer; |
| 1032 | struct list_head *p; |
| 1033 | int err = 0; |
| 1034 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 1035 | if (chip == USB_AUDIO_IFACE_UNUSED) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1036 | return 0; |
| 1037 | |
| 1038 | atomic_inc(&chip->active); /* avoid autopm */ |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 1039 | if (chip->num_suspended_intf > 1) |
| 1040 | goto out; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1041 | |
| 1042 | list_for_each_entry(as, &chip->pcm_list, list) { |
| 1043 | err = snd_usb_pcm_resume(as); |
| 1044 | if (err < 0) |
| 1045 | goto err_out; |
| 1046 | } |
| 1047 | |
| 1048 | /* |
| 1049 | * ALSA leaves material resumption to user space |
| 1050 | * we just notify and restart the mixers |
| 1051 | */ |
| 1052 | list_for_each_entry(mixer, &chip->mixer_list, list) { |
| 1053 | err = snd_usb_mixer_resume(mixer, reset_resume); |
| 1054 | if (err < 0) |
| 1055 | goto err_out; |
| 1056 | } |
| 1057 | |
| 1058 | list_for_each(p, &chip->midi_list) { |
| 1059 | snd_usbmidi_resume(p); |
| 1060 | } |
| 1061 | |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 1062 | out: |
| 1063 | if (chip->num_suspended_intf == chip->system_suspend) { |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1064 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); |
Olivier Deprez | 0e64123 | 2021-09-23 10:07:05 +0200 | [diff] [blame] | 1065 | chip->system_suspend = 0; |
| 1066 | } |
| 1067 | chip->num_suspended_intf--; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1068 | |
| 1069 | err_out: |
| 1070 | atomic_dec(&chip->active); /* allow autopm after this point */ |
| 1071 | return err; |
| 1072 | } |
| 1073 | |
| 1074 | static int usb_audio_resume(struct usb_interface *intf) |
| 1075 | { |
| 1076 | return __usb_audio_resume(intf, false); |
| 1077 | } |
| 1078 | |
| 1079 | static int usb_audio_reset_resume(struct usb_interface *intf) |
| 1080 | { |
| 1081 | return __usb_audio_resume(intf, true); |
| 1082 | } |
| 1083 | #else |
| 1084 | #define usb_audio_suspend NULL |
| 1085 | #define usb_audio_resume NULL |
| 1086 | #define usb_audio_reset_resume NULL |
| 1087 | #endif /* CONFIG_PM */ |
| 1088 | |
| 1089 | static const struct usb_device_id usb_audio_ids [] = { |
| 1090 | #include "quirks-table.h" |
| 1091 | { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS), |
| 1092 | .bInterfaceClass = USB_CLASS_AUDIO, |
| 1093 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }, |
| 1094 | { } /* Terminating entry */ |
| 1095 | }; |
| 1096 | MODULE_DEVICE_TABLE(usb, usb_audio_ids); |
| 1097 | |
| 1098 | /* |
| 1099 | * entry point for linux usb interface |
| 1100 | */ |
| 1101 | |
| 1102 | static struct usb_driver usb_audio_driver = { |
| 1103 | .name = "snd-usb-audio", |
| 1104 | .probe = usb_audio_probe, |
| 1105 | .disconnect = usb_audio_disconnect, |
| 1106 | .suspend = usb_audio_suspend, |
| 1107 | .resume = usb_audio_resume, |
| 1108 | .reset_resume = usb_audio_reset_resume, |
| 1109 | .id_table = usb_audio_ids, |
| 1110 | .supports_autosuspend = 1, |
| 1111 | }; |
| 1112 | |
| 1113 | module_usb_driver(usb_audio_driver); |