1 // SPDX-License-Identifier: GPL-2.0-or-later
15  *   - the linked URBs would be preferred but not used so far because of
17  *   - type II is not supported properly.  there is no device which supports
33 #include <linux/usb/audio-v2.h>
34 #include <linux/usb/audio-v3.h>
63 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
64 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */  variable
67 static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
68 static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
83 module_param_array(id, charp, NULL, 0444);
84 MODULE_PARM_DESC(id, "ID string for the USB audio adapter.");
88 MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device.");
90 MODULE_PARM_DESC(pid, "Product ID for the USB audio device.");
97 MODULE_PARM_DESC(autoclock, "Enable auto-clock selection for UAC2 devices (default: yes).");
103 MODULE_PARM_DESC(delayed_register, "Quirk for delayed registration, given by id:iface, e.g. 0123abc…
132 		subs = &as->substream[idx];  in snd_usb_stream_disconnect()
133 		if (!subs->num_formats)  in snd_usb_stream_disconnect()
135 		subs->data_endpoint = NULL;  in snd_usb_stream_disconnect()
136 		subs->sync_endpoint = NULL;  in snd_usb_stream_disconnect()
140 static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int interface)  in snd_usb_create_stream()  argument
142 	struct usb_device *dev = chip->dev;  in snd_usb_create_stream()
148 		dev_err(&dev->dev, "%u:%d : does not exist\n",  in snd_usb_create_stream()
150 		return -EINVAL;  in snd_usb_create_stream()
153 	alts = &iface->altsetting[0];  in snd_usb_create_stream()
160 	if ((chip->usb_id == USB_ID(0x18d1, 0x2d04) ||  in snd_usb_create_stream()
161 	     chip->usb_id == USB_ID(0x18d1, 0x2d05)) &&  in snd_usb_create_stream()
163 	    altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC &&  in snd_usb_create_stream()
164 	    altsd->bInterfaceSubClass == USB_SUBCLASS_VENDOR_SPEC) {  in snd_usb_create_stream()
168 			return -EINVAL;  in snd_usb_create_stream()
169 		alts = &iface->altsetting[0];  in snd_usb_create_stream()
174 		dev_dbg(&dev->dev, "%d:%d: skipping, already claimed\n",  in snd_usb_create_stream()
176 		return -EINVAL;  in snd_usb_create_stream()
179 	if ((altsd->bInterfaceClass == USB_CLASS_AUDIO ||  in snd_usb_create_stream()
180 	     altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) &&  in snd_usb_create_stream()
181 	    altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) {  in snd_usb_create_stream()
182 		int err = snd_usb_midi_v2_create(chip, iface, NULL,  in snd_usb_create_stream()
183 						 chip->usb_id);  in snd_usb_create_stream()
185 			dev_err(&dev->dev,  in snd_usb_create_stream()
188 			return -EINVAL;  in snd_usb_create_stream()
194 	if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&  in snd_usb_create_stream()
195 	     altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||  in snd_usb_create_stream()
196 	    altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) {  in snd_usb_create_stream()
197 		dev_dbg(&dev->dev,  in snd_usb_create_stream()
198 			"%u:%d: skipping non-supported interface %d\n",  in snd_usb_create_stream()
199 			ctrlif, interface, altsd->bInterfaceClass);  in snd_usb_create_stream()
200 		/* skip non-supported classes */  in snd_usb_create_stream()
201 		return -EINVAL;  in snd_usb_create_stream()
205 		dev_err(&dev->dev, "low speed audio streaming not supported\n");  in snd_usb_create_stream()
206 		return -EINVAL;  in snd_usb_create_stream()
209 	snd_usb_add_ctrl_interface_link(chip, interface, ctrlif);  in snd_usb_create_stream()
211 	if (! snd_usb_parse_audio_interface(chip, interface)) {  in snd_usb_create_stream()
223 static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)  in snd_usb_create_streams()  argument
225 	struct usb_device *dev = chip->dev;  in snd_usb_create_streams()
231 	host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0];  in snd_usb_create_streams()
233 	protocol = altsd->bInterfaceProtocol;  in snd_usb_create_streams()
237 		dev_warn(&dev->dev,  in snd_usb_create_streams()
246 		h1 = snd_usb_find_csint_desc(host_iface->extra,  in snd_usb_create_streams()
247 							 host_iface->extralen,  in snd_usb_create_streams()
249 		if (!h1 || h1->bLength < sizeof(*h1)) {  in snd_usb_create_streams()
250 			dev_err(&dev->dev, "cannot find UAC_HEADER\n");  in snd_usb_create_streams()
251 			return -EINVAL;  in snd_usb_create_streams()
254 		rest_bytes = (void *)(host_iface->extra +  in snd_usb_create_streams()
255 				host_iface->extralen) - (void *)h1;  in snd_usb_create_streams()
257 		/* just to be sure -- this shouldn't hit at all */  in snd_usb_create_streams()
259 			dev_err(&dev->dev, "invalid control header\n");  in snd_usb_create_streams()
260 			return -EINVAL;  in snd_usb_create_streams()
264 			dev_err(&dev->dev, "too short v1 buffer descriptor\n");  in snd_usb_create_streams()
265 			return -EINVAL;  in snd_usb_create_streams()
268 		if (!h1->bInCollection) {  in snd_usb_create_streams()
269 			dev_info(&dev->dev, "skipping empty audio interface (v1)\n");  in snd_usb_create_streams()
270 			return -EINVAL;  in snd_usb_create_streams()
273 		if (rest_bytes < h1->bLength) {  in snd_usb_create_streams()
274 			dev_err(&dev->dev, "invalid buffer length (v1)\n");  in snd_usb_create_streams()
275 			return -EINVAL;  in snd_usb_create_streams()
278 		if (h1->bLength < sizeof(*h1) + h1->bInCollection) {  in snd_usb_create_streams()
279 			dev_err(&dev->dev, "invalid UAC_HEADER (v1)\n");  in snd_usb_create_streams()
280 			return -EINVAL;  in snd_usb_create_streams()
283 		for (i = 0; i < h1->bInCollection; i++)  in snd_usb_create_streams()
284 			snd_usb_create_stream(chip, ctrlif, h1->baInterfaceNr[i]);  in snd_usb_create_streams()
292 			usb_ifnum_to_if(dev, ctrlif)->intf_assoc;  in snd_usb_create_streams()
297 			 * the IAD on the NuForce UDH-100, also check the next  in snd_usb_create_streams()
303 			    iface->intf_assoc &&  in snd_usb_create_streams()
304 			    iface->intf_assoc->bFunctionClass == USB_CLASS_AUDIO &&  in snd_usb_create_streams()
305 			    iface->intf_assoc->bFunctionProtocol == UAC_VERSION_2)  in snd_usb_create_streams()
306 				assoc = iface->intf_assoc;  in snd_usb_create_streams()
310 			dev_err(&dev->dev, "Audio class v2/v3 interfaces need an interface association\n");  in snd_usb_create_streams()
311 			return -EINVAL;  in snd_usb_create_streams()
315 			int badd = assoc->bFunctionSubClass;  in snd_usb_create_streams()
320 				dev_err(&dev->dev,  in snd_usb_create_streams()
322 				return -EINVAL;  in snd_usb_create_streams()
325 			chip->badd_profile = badd;  in snd_usb_create_streams()
328 		for (i = 0; i < assoc->bInterfaceCount; i++) {  in snd_usb_create_streams()
329 			int intf = assoc->bFirstInterface + i;  in snd_usb_create_streams()
332 				snd_usb_create_stream(chip, ctrlif, intf);  in snd_usb_create_streams()
346 	u32 id;  member
349 	const char *profile_name;	/* override card->longname */
353 	{ .id = USB_ID(vid, pid), .vendor_name = (vendor),	 \
358 /* vendor/product and profile name presets, sorted in device id order */
362 		     "HP-Thunderbolt-Dock-Audio-Headset"),
365 		     "HP-Thunderbolt-Dock-Audio-Module"),
368 	 * TRX40 Aorus Master has two USB-audio devices, one for the front
369 	 * headphone with ESS SABRE9218 DAC chip, while another for the rest
370 	 * I/O (the rear panel and the front mic) with Realtek ALC1220-VB.
374 		     "Gigabyte-Aorus-Master-Front-Headphone"),
376 		     "Gigabyte-Aorus-Master-Main-Audio"),
380 		     "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"),
382 	/* Creative/E-Mu devices */
384 	/* Creative/Toshiba Multimedia Center SB-0500 */
385 	DEVICE_NAME(0x041e, 0x3048, "Toshiba", "SB-0500"),
388 	DEVICE_NAME(0x046d, 0x0867, "Logitech, Inc.", "Logi-MeetUp"),
389 	DEVICE_NAME(0x046d, 0x0874, "Logitech, Inc.", "Logi-Tap-Audio"),
390 	DEVICE_NAME(0x046d, 0x087c, "Logitech, Inc.", "Logi-Huddle"),
391 	DEVICE_NAME(0x046d, 0x0898, "Logitech, Inc.", "Logi-RB-Audio"),
392 	DEVICE_NAME(0x046d, 0x08d2, "Logitech, Inc.", "Logi-RBM-Audio"),
402 		     "Zenith-II-Front-Headphone"),
404 		     "Zenith-II-Main-Audio"),
408 		     "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"),
409 	/* ASUS PRIME TRX40 PRO-S */
411 		     "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"),
414 	PROFILE_NAME(0x0bda, 0x4014, "Dell", "WD15 Dock", "Dell-WD15-Dock"),
416 	PROFILE_NAME(0x0bda, 0x402e, "Dell", "WD19 Dock", "Dell-WD15-Dock"),
429 		     "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"),
432 		     "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"),
434 	DEVICE_NAME(0x0fd9, 0x0008, "Hauppauge", "HVR-950Q"),
438 		     "HP-Engage-Go-Dock"),
445 	DEVICE_NAME(0x13e5, 0x0001, "Rane", "SL-1"),
447 	/* Lenovo ThinkStation P620 Rear Line-in, Line-out and Microphone */
449 		     "Lenovo-ThinkStation-P620-Rear"),
452 		     "Lenovo-ThinkStation-P620-Main"),
456 		     "Realtek", "ALC1220-VB-DT", "Realtek-ALC1220-VB-Desktop"),
458 	DEVICE_NAME(0x2040, 0x7200, "Hauppauge", "HVR-950Q"),
459 	DEVICE_NAME(0x2040, 0x7201, "Hauppauge", "HVR-950Q-MXL"),
460 	DEVICE_NAME(0x2040, 0x7210, "Hauppauge", "HVR-950Q"),
461 	DEVICE_NAME(0x2040, 0x7211, "Hauppauge", "HVR-950Q-MXL"),
462 	DEVICE_NAME(0x2040, 0x7213, "Hauppauge", "HVR-950Q"),
463 	DEVICE_NAME(0x2040, 0x7217, "Hauppauge", "HVR-950Q"),
464 	DEVICE_NAME(0x2040, 0x721b, "Hauppauge", "HVR-950Q"),
465 	DEVICE_NAME(0x2040, 0x721e, "Hauppauge", "HVR-950Q"),
466 	DEVICE_NAME(0x2040, 0x721f, "Hauppauge", "HVR-950Q"),
467 	DEVICE_NAME(0x2040, 0x7240, "Hauppauge", "HVR-850"),
468 	DEVICE_NAME(0x2040, 0x7260, "Hauppauge", "HVR-950Q"),
469 	DEVICE_NAME(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
470 	DEVICE_NAME(0x2040, 0x7280, "Hauppauge", "HVR-950Q"),
471 	DEVICE_NAME(0x2040, 0x7281, "Hauppauge", "HVR-950Q-MXL"),
478 lookup_device_name(u32 id)  in lookup_device_name()  argument
482 	for (p = usb_audio_names; p->id; p++)  in lookup_device_name()
483 		if (p->id == id)  in lookup_device_name()
489  * free the chip instance
497 	struct snd_usb_audio *chip = card->private_data;  in snd_usb_audio_free()  local
499 	snd_usb_endpoint_free_all(chip);  in snd_usb_audio_free()
500 	snd_usb_midi_v2_free_all(chip);  in snd_usb_audio_free()
502 	mutex_destroy(&chip->mutex);  in snd_usb_audio_free()
503 	if (!atomic_read(&chip->shutdown))  in snd_usb_audio_free()
504 		dev_set_drvdata(&chip->dev->dev, NULL);  in snd_usb_audio_free()
508 				     struct snd_usb_audio *chip,  in usb_audio_make_shortname()  argument
511 	struct snd_card *card = chip->card;  in usb_audio_make_shortname()
515 	preset = lookup_device_name(chip->usb_id);  in usb_audio_make_shortname()
516 	if (preset && preset->product_name)  in usb_audio_make_shortname()
517 		s = preset->product_name;  in usb_audio_make_shortname()
518 	else if (quirk && quirk->product_name)  in usb_audio_make_shortname()
519 		s = quirk->product_name;  in usb_audio_make_shortname()
521 		strscpy(card->shortname, s, sizeof(card->shortname));  in usb_audio_make_shortname()
526 	if (!dev->descriptor.iProduct ||  in usb_audio_make_shortname()
527 	    usb_string(dev, dev->descriptor.iProduct,  in usb_audio_make_shortname()
528 		       card->shortname, sizeof(card->shortname)) <= 0) {  in usb_audio_make_shortname()
529 		/* no name available from anywhere, so use ID */  in usb_audio_make_shortname()
530 		sprintf(card->shortname, "USB Device %#04x:%#04x",  in usb_audio_make_shortname()
531 			USB_ID_VENDOR(chip->usb_id),  in usb_audio_make_shortname()
532 			USB_ID_PRODUCT(chip->usb_id));  in usb_audio_make_shortname()
535 	strim(card->shortname);  in usb_audio_make_shortname()
539 				    struct snd_usb_audio *chip,  in usb_audio_make_longname()  argument
542 	struct snd_card *card = chip->card;  in usb_audio_make_longname()
547 	preset = lookup_device_name(chip->usb_id);  in usb_audio_make_longname()
549 	/* shortcut - if any pre-defined string is given, use it */  in usb_audio_make_longname()
550 	if (preset && preset->profile_name)  in usb_audio_make_longname()
551 		s = preset->profile_name;  in usb_audio_make_longname()
553 		strscpy(card->longname, s, sizeof(card->longname));  in usb_audio_make_longname()
557 	if (preset && preset->vendor_name)  in usb_audio_make_longname()
558 		s = preset->vendor_name;  in usb_audio_make_longname()
559 	else if (quirk && quirk->vendor_name)  in usb_audio_make_longname()
560 		s = quirk->vendor_name;  in usb_audio_make_longname()
561 	*card->longname = 0;  in usb_audio_make_longname()
563 		strscpy(card->longname, s, sizeof(card->longname));  in usb_audio_make_longname()
566 		if (dev->descriptor.iManufacturer)  in usb_audio_make_longname()
567 			usb_string(dev, dev->descriptor.iManufacturer,  in usb_audio_make_longname()
568 				   card->longname, sizeof(card->longname));  in usb_audio_make_longname()
571 	if (*card->longname) {  in usb_audio_make_longname()
572 		strim(card->longname);  in usb_audio_make_longname()
573 		if (*card->longname)  in usb_audio_make_longname()
574 			strlcat(card->longname, " ", sizeof(card->longname));  in usb_audio_make_longname()
577 	strlcat(card->longname, card->shortname, sizeof(card->longname));  in usb_audio_make_longname()
579 	len = strlcat(card->longname, " at ", sizeof(card->longname));  in usb_audio_make_longname()
581 	if (len < sizeof(card->longname))  in usb_audio_make_longname()
582 		usb_make_path(dev, card->longname + len, sizeof(card->longname) - len);  in usb_audio_make_longname()
586 		strlcat(card->longname, ", low speed", sizeof(card->longname));  in usb_audio_make_longname()
589 		strlcat(card->longname, ", full speed", sizeof(card->longname));  in usb_audio_make_longname()
592 		strlcat(card->longname, ", high speed", sizeof(card->longname));  in usb_audio_make_longname()
595 		strlcat(card->longname, ", super speed", sizeof(card->longname));  in usb_audio_make_longname()
598 		strlcat(card->longname, ", super speed plus", sizeof(card->longname));  in usb_audio_make_longname()
606  * create a chip instance and set its names.
615 	struct snd_usb_audio *chip;  in snd_usb_audio_create()  local
629 		dev_err(&dev->dev, "unknown device speed %d\n", snd_usb_get_speed(dev));  in snd_usb_audio_create()
630 		return -ENXIO;  in snd_usb_audio_create()
633 	err = snd_card_new(&intf->dev, index[idx], id[idx], THIS_MODULE,  in snd_usb_audio_create()
634 			   sizeof(*chip), &card);  in snd_usb_audio_create()
636 		dev_err(&dev->dev, "cannot create card instance %d\n", idx);  in snd_usb_audio_create()
640 	chip = card->private_data;  in snd_usb_audio_create()
641 	mutex_init(&chip->mutex);  in snd_usb_audio_create()
642 	init_waitqueue_head(&chip->shutdown_wait);  in snd_usb_audio_create()
643 	chip->index = idx;  in snd_usb_audio_create()
644 	chip->dev = dev;  in snd_usb_audio_create()
645 	chip->card = card;  in snd_usb_audio_create()
646 	chip->setup = device_setup[idx];  in snd_usb_audio_create()
647 	chip->generic_implicit_fb = implicit_fb[idx];  in snd_usb_audio_create()
648 	chip->autoclock = autoclock;  in snd_usb_audio_create()
649 	chip->lowlatency = lowlatency;  in snd_usb_audio_create()
650 	atomic_set(&chip->active, 1); /* avoid autopm during probing */  in snd_usb_audio_create()
651 	atomic_set(&chip->usage_count, 0);  in snd_usb_audio_create()
652 	atomic_set(&chip->shutdown, 0);  in snd_usb_audio_create()
654 	chip->usb_id = usb_id;  in snd_usb_audio_create()
655 	INIT_LIST_HEAD(&chip->pcm_list);  in snd_usb_audio_create()
656 	INIT_LIST_HEAD(&chip->ep_list);  in snd_usb_audio_create()
657 	INIT_LIST_HEAD(&chip->iface_ref_list);  in snd_usb_audio_create()
658 	INIT_LIST_HEAD(&chip->clock_ref_list);  in snd_usb_audio_create()
659 	INIT_LIST_HEAD(&chip->midi_list);  in snd_usb_audio_create()
660 	INIT_LIST_HEAD(&chip->midi_v2_list);  in snd_usb_audio_create()
661 	INIT_LIST_HEAD(&chip->mixer_list);  in snd_usb_audio_create()
664 		chip->quirk_flags = quirk_flags[idx];  in snd_usb_audio_create()
666 		snd_usb_init_quirk_flags(chip);  in snd_usb_audio_create()
668 	card->private_free = snd_usb_audio_free;  in snd_usb_audio_create()
670 	strcpy(card->driver, "USB-Audio");  in snd_usb_audio_create()
672 		USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id));  in snd_usb_audio_create()
675 	usb_audio_make_shortname(dev, chip, quirk);  in snd_usb_audio_create()
676 	usb_audio_make_longname(dev, chip, quirk);  in snd_usb_audio_create()
678 	snd_usb_audio_create_proc(chip);  in snd_usb_audio_create()
680 	*rchip = chip;  in snd_usb_audio_create()
684 /* look for a matching quirk alias id */
685 static bool get_alias_id(struct usb_device *dev, unsigned int *id)  in get_alias_id()  argument
693 		    src != *id)  in get_alias_id()
695 		dev_info(&dev->dev,  in get_alias_id()
697 			 USB_ID_VENDOR(*id), USB_ID_PRODUCT(*id),  in get_alias_id()
699 		*id = dst;  in get_alias_id()
706 static int check_delayed_register_option(struct snd_usb_audio *chip)  in check_delayed_register_option()  argument
709 	unsigned int id, inum;  in check_delayed_register_option()  local
713 		    sscanf(delayed_register[i], "%x:%x", &id, &inum) == 2 &&  in check_delayed_register_option()
714 		    id == chip->usb_id)  in check_delayed_register_option()
718 	return -1;  in check_delayed_register_option()
724 static void find_last_interface(struct snd_usb_audio *chip)  in find_last_interface()  argument
726 	struct usb_host_config *config = chip->dev->actconfig;  in find_last_interface()
732 	for (i = 0; i < config->desc.bNumInterfaces; i++) {  in find_last_interface()
733 		intf = config->interface[i];  in find_last_interface()
735 			chip->last_iface = intf->altsetting[0].desc.bInterfaceNumber;  in find_last_interface()
737 	usb_audio_dbg(chip, "Found last interface = %d\n", chip->last_iface);  in find_last_interface()
742 get_alias_quirk(struct usb_device *dev, unsigned int id)  in get_alias_quirk()  argument
746 	for (p = usb_audio_ids; p->match_flags; p++) {  in get_alias_quirk()
748 		if ((p->match_flags & USB_DEVICE_ID_MATCH_DEVICE) ==  in get_alias_quirk()
750 		    p->idVendor == USB_ID_VENDOR(id) &&  in get_alias_quirk()
751 		    p->idProduct == USB_ID_PRODUCT(id))  in get_alias_quirk()
752 			return (const struct snd_usb_audio_quirk *)p->driver_info;  in get_alias_quirk()
761 static int try_to_register_card(struct snd_usb_audio *chip, int ifnum)  in try_to_register_card()  argument
763 	if (check_delayed_register_option(chip) == ifnum ||  in try_to_register_card()
764 	    chip->last_iface == ifnum ||  in try_to_register_card()
765 	    usb_interface_claimed(usb_ifnum_to_if(chip->dev, chip->last_iface)))  in try_to_register_card()
766 		return snd_card_register(chip->card);  in try_to_register_card()
785 		(const struct snd_usb_audio_quirk *)usb_id->driver_info;  in usb_audio_probe()
786 	struct snd_usb_audio *chip;  in usb_audio_probe()  local
790 	u32 id;  in usb_audio_probe()  local
792 	alts = &intf->altsetting[0];  in usb_audio_probe()
793 	ifnum = get_iface_desc(alts)->bInterfaceNumber;  in usb_audio_probe()
794 	id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),  in usb_audio_probe()
795 		    le16_to_cpu(dev->descriptor.idProduct));  in usb_audio_probe()
796 	if (get_alias_id(dev, &id))  in usb_audio_probe()
797 		quirk = get_alias_quirk(dev, id);  in usb_audio_probe()
798 	if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum)  in usb_audio_probe()
799 		return -ENXIO;  in usb_audio_probe()
800 	if (quirk && quirk->ifnum == QUIRK_NODEV_INTERFACE)  in usb_audio_probe()
801 		return -ENODEV;  in usb_audio_probe()
803 	err = snd_usb_apply_boot_quirk(dev, intf, quirk, id);  in usb_audio_probe()
812 	chip = NULL;  in usb_audio_probe()
815 		if (usb_chip[i] && usb_chip[i]->dev == dev) {  in usb_audio_probe()
816 			if (atomic_read(&usb_chip[i]->shutdown)) {  in usb_audio_probe()
817 				dev_err(&dev->dev, "USB device is in the shutdown state, cannot create a card instance\n");  in usb_audio_probe()
818 				err = -EIO;  in usb_audio_probe()
821 			chip = usb_chip[i];  in usb_audio_probe()
822 			atomic_inc(&chip->active); /* avoid autopm */  in usb_audio_probe()
826 	if (! chip) {  in usb_audio_probe()
827 		err = snd_usb_apply_boot_quirk_once(dev, intf, quirk, id);  in usb_audio_probe()
836 			    (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&  in usb_audio_probe()
837 			    (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) {  in usb_audio_probe()
840 								   id, &chip);  in usb_audio_probe()
844 				} else if (vid[i] != -1 || pid[i] != -1) {  in usb_audio_probe()
845 					dev_info(&dev->dev,  in usb_audio_probe()
847 						 USB_ID_VENDOR(id),  in usb_audio_probe()
848 						 USB_ID_PRODUCT(id));  in usb_audio_probe()
849 					err = -ENOENT;  in usb_audio_probe()
853 		if (!chip) {  in usb_audio_probe()
854 			dev_err(&dev->dev, "no available usb audio device\n");  in usb_audio_probe()
855 			err = -ENODEV;  in usb_audio_probe()
858 		find_last_interface(chip);  in usb_audio_probe()
861 	if (chip->num_interfaces >= MAX_CARD_INTERFACES) {  in usb_audio_probe()
862 		dev_info(&dev->dev, "Too many interfaces assigned to the single USB-audio card\n");  in usb_audio_probe()
863 		err = -EINVAL;  in usb_audio_probe()
867 	dev_set_drvdata(&dev->dev, chip);  in usb_audio_probe()
870 		chip->quirk_flags |= QUIRK_FLAG_IGNORE_CTL_ERROR;  in usb_audio_probe()
872 	if (chip->quirk_flags & QUIRK_FLAG_DISABLE_AUTOSUSPEND)  in usb_audio_probe()
880 	if (!chip->ctrl_intf)  in usb_audio_probe()
881 		chip->ctrl_intf = alts;  in usb_audio_probe()
884 	if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) {  in usb_audio_probe()
886 		err = snd_usb_create_quirk(chip, intf, &usb_audio_driver, quirk);  in usb_audio_probe()
893 		err = snd_usb_create_streams(chip, ifnum);  in usb_audio_probe()
896 		err = snd_usb_create_mixer(chip, ifnum);  in usb_audio_probe()
901 	if (chip->need_delayed_register) {  in usb_audio_probe()
902 		dev_info(&dev->dev,  in usb_audio_probe()
903 			 "Found post-registration device assignment: %08x:%02x\n",  in usb_audio_probe()
904 			 chip->usb_id, ifnum);  in usb_audio_probe()
905 		chip->need_delayed_register = false; /* clear again */  in usb_audio_probe()
908 	err = try_to_register_card(chip, ifnum);  in usb_audio_probe()
912 	if (chip->quirk_flags & QUIRK_FLAG_SHARE_MEDIA_DEVICE) {  in usb_audio_probe()
914 		snd_media_device_create(chip, intf);  in usb_audio_probe()
918 		chip->quirk_type = quirk->type;  in usb_audio_probe()
920 	usb_chip[chip->index] = chip;  in usb_audio_probe()
921 	chip->intf[chip->num_interfaces] = intf;  in usb_audio_probe()
922 	chip->num_interfaces++;  in usb_audio_probe()
923 	usb_set_intfdata(intf, chip);  in usb_audio_probe()
924 	atomic_dec(&chip->active);  in usb_audio_probe()
930 	if (chip)  in usb_audio_probe()
931 		try_to_register_card(chip, ifnum);  in usb_audio_probe()
934 	if (chip) {  in usb_audio_probe()
935 		/* chip->active is inside the chip->card object,  in usb_audio_probe()
938 		atomic_dec(&chip->active);  in usb_audio_probe()
939 		if (!chip->num_interfaces)  in usb_audio_probe()
940 			snd_card_free(chip->card);  in usb_audio_probe()
952 	struct snd_usb_audio *chip = usb_get_intfdata(intf);  in usb_audio_disconnect()  local
956 	if (chip == USB_AUDIO_IFACE_UNUSED)  in usb_audio_disconnect()
959 	card = chip->card;  in usb_audio_disconnect()
962 	if (atomic_inc_return(&chip->shutdown) == 1) {  in usb_audio_disconnect()
970 		wait_event(chip->shutdown_wait,  in usb_audio_disconnect()
971 			   !atomic_read(&chip->usage_count));  in usb_audio_disconnect()
974 		list_for_each_entry(as, &chip->pcm_list, list) {  in usb_audio_disconnect()
978 		list_for_each_entry(ep, &chip->ep_list, list) {  in usb_audio_disconnect()
982 		list_for_each(p, &chip->midi_list) {  in usb_audio_disconnect()
985 		snd_usb_midi_v2_disconnect_all(chip);  in usb_audio_disconnect()
987 		 * Nice to check quirk && quirk->shares_media_device and  in usb_audio_disconnect()
992 		snd_media_device_delete(chip);  in usb_audio_disconnect()
995 		list_for_each_entry(mixer, &chip->mixer_list, list) {  in usb_audio_disconnect()
1000 	if (chip->quirk_flags & QUIRK_FLAG_DISABLE_AUTOSUSPEND)  in usb_audio_disconnect()
1003 	chip->num_interfaces--;  in usb_audio_disconnect()
1004 	if (chip->num_interfaces <= 0) {  in usb_audio_disconnect()
1005 		usb_chip[chip->index] = NULL;  in usb_audio_disconnect()
1014 int snd_usb_lock_shutdown(struct snd_usb_audio *chip)  in snd_usb_lock_shutdown()  argument
1018 	atomic_inc(&chip->usage_count);  in snd_usb_lock_shutdown()
1019 	if (atomic_read(&chip->shutdown)) {  in snd_usb_lock_shutdown()
1020 		err = -EIO;  in snd_usb_lock_shutdown()
1023 	err = snd_usb_autoresume(chip);  in snd_usb_lock_shutdown()
1029 	if (atomic_dec_and_test(&chip->usage_count))  in snd_usb_lock_shutdown()
1030 		wake_up(&chip->shutdown_wait);  in snd_usb_lock_shutdown()
1035 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip)  in snd_usb_unlock_shutdown()  argument
1037 	snd_usb_autosuspend(chip);  in snd_usb_unlock_shutdown()
1038 	if (atomic_dec_and_test(&chip->usage_count))  in snd_usb_unlock_shutdown()
1039 		wake_up(&chip->shutdown_wait);  in snd_usb_unlock_shutdown()
1042 int snd_usb_autoresume(struct snd_usb_audio *chip)  in snd_usb_autoresume()  argument
1046 	if (atomic_read(&chip->shutdown))  in snd_usb_autoresume()
1047 		return -EIO;  in snd_usb_autoresume()
1048 	if (atomic_inc_return(&chip->active) != 1)  in snd_usb_autoresume()
1051 	for (i = 0; i < chip->num_interfaces; i++) {  in snd_usb_autoresume()
1052 		err = usb_autopm_get_interface(chip->intf[i]);  in snd_usb_autoresume()
1055 			while (--i >= 0)  in snd_usb_autoresume()
1056 				usb_autopm_put_interface(chip->intf[i]);  in snd_usb_autoresume()
1057 			atomic_dec(&chip->active);  in snd_usb_autoresume()
1064 void snd_usb_autosuspend(struct snd_usb_audio *chip)  in snd_usb_autosuspend()  argument
1068 	if (atomic_read(&chip->shutdown))  in snd_usb_autosuspend()
1070 	if (!atomic_dec_and_test(&chip->active))  in snd_usb_autosuspend()
1073 	for (i = 0; i < chip->num_interfaces; i++)  in snd_usb_autosuspend()
1074 		usb_autopm_put_interface(chip->intf[i]);  in snd_usb_autosuspend()
1079 	struct snd_usb_audio *chip = usb_get_intfdata(intf);  in usb_audio_suspend()  local
1085 	if (chip == USB_AUDIO_IFACE_UNUSED)  in usb_audio_suspend()
1088 	if (!chip->num_suspended_intf++) {  in usb_audio_suspend()
1089 		list_for_each_entry(as, &chip->pcm_list, list)  in usb_audio_suspend()
1091 		list_for_each_entry(ep, &chip->ep_list, list)  in usb_audio_suspend()
1093 		list_for_each(p, &chip->midi_list)  in usb_audio_suspend()
1095 		list_for_each_entry(mixer, &chip->mixer_list, list)  in usb_audio_suspend()
1097 		snd_usb_midi_v2_suspend_all(chip);  in usb_audio_suspend()
1100 	if (!PMSG_IS_AUTO(message) && !chip->system_suspend) {  in usb_audio_suspend()
1101 		snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);  in usb_audio_suspend()
1102 		chip->system_suspend = chip->num_suspended_intf;  in usb_audio_suspend()
1110 	struct snd_usb_audio *chip = usb_get_intfdata(intf);  in usb_audio_resume()  local
1116 	if (chip == USB_AUDIO_IFACE_UNUSED)  in usb_audio_resume()
1119 	atomic_inc(&chip->active); /* avoid autopm */  in usb_audio_resume()
1120 	if (chip->num_suspended_intf > 1)  in usb_audio_resume()
1123 	list_for_each_entry(as, &chip->pcm_list, list) {  in usb_audio_resume()
1133 	list_for_each_entry(mixer, &chip->mixer_list, list) {  in usb_audio_resume()
1139 	list_for_each(p, &chip->midi_list) {  in usb_audio_resume()
1143 	snd_usb_midi_v2_resume_all(chip);  in usb_audio_resume()
1146 	if (chip->num_suspended_intf == chip->system_suspend) {  in usb_audio_resume()
1147 		snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);  in usb_audio_resume()
1148 		chip->system_suspend = 0;  in usb_audio_resume()
1150 	chip->num_suspended_intf--;  in usb_audio_resume()
1153 	atomic_dec(&chip->active); /* allow autopm after this point */  in usb_audio_resume()
1158 #include "quirks-table.h"
1171 	.name =		"snd-usb-audio",