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Commit | Line | Data |
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e5779998 DM |
1 | /* |
2 | * (Tentative) USB Audio Driver for ALSA | |
3 | * | |
4 | * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> | |
5 | * | |
6 | * Many codes borrowed from audio.c by | |
7 | * Alan Cox (alan@lxorguk.ukuu.org.uk) | |
8 | * Thomas Sailer (sailer@ife.ee.ethz.ch) | |
9 | * | |
9a2fe9b8 | 10 | * Audio Class 3.0 support by Ruslan Bilovol <ruslan.bilovol@gmail.com> |
e5779998 DM |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | * | |
27 | * NOTES: | |
28 | * | |
e5779998 DM |
29 | * - the linked URBs would be preferred but not used so far because of |
30 | * the instability of unlinking. | |
31 | * - type II is not supported properly. there is no device which supports | |
32 | * this type *correctly*. SB extigy looks as if it supports, but it's | |
33 | * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream). | |
34 | */ | |
35 | ||
36 | ||
37 | #include <linux/bitops.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/list.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/string.h> | |
3ffc1222 | 42 | #include <linux/ctype.h> |
e5779998 DM |
43 | #include <linux/usb.h> |
44 | #include <linux/moduleparam.h> | |
45 | #include <linux/mutex.h> | |
46 | #include <linux/usb/audio.h> | |
7e847894 | 47 | #include <linux/usb/audio-v2.h> |
9a2fe9b8 | 48 | #include <linux/usb/audio-v3.h> |
da155d5b | 49 | #include <linux/module.h> |
e5779998 | 50 | |
9e38658f | 51 | #include <sound/control.h> |
e5779998 DM |
52 | #include <sound/core.h> |
53 | #include <sound/info.h> | |
54 | #include <sound/pcm.h> | |
55 | #include <sound/pcm_params.h> | |
56 | #include <sound/initval.h> | |
57 | ||
58 | #include "usbaudio.h" | |
59 | #include "card.h" | |
60 | #include "midi.h" | |
f0b5e634 | 61 | #include "mixer.h" |
e5779998 DM |
62 | #include "proc.h" |
63 | #include "quirks.h" | |
64 | #include "endpoint.h" | |
65 | #include "helper.h" | |
66 | #include "debug.h" | |
67 | #include "pcm.h" | |
e5779998 | 68 | #include "format.h" |
88a8516a | 69 | #include "power.h" |
e8e8babf | 70 | #include "stream.h" |
e5779998 DM |
71 | |
72 | MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); | |
73 | MODULE_DESCRIPTION("USB Audio"); | |
74 | MODULE_LICENSE("GPL"); | |
75 | MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}"); | |
76 | ||
77 | ||
78 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
79 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
a67ff6a5 | 80 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */ |
e5779998 DM |
81 | /* Vendor/product IDs for this card */ |
82 | static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; | |
83 | static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; | |
e5779998 | 84 | static int device_setup[SNDRV_CARDS]; /* device parameter for this card */ |
a67ff6a5 | 85 | static bool ignore_ctl_error; |
ef02e29b | 86 | static bool autoclock = true; |
e2703363 | 87 | static char *quirk_alias[SNDRV_CARDS]; |
e5779998 | 88 | |
f274baa4 TI |
89 | bool snd_usb_use_vmalloc = true; |
90 | ||
e5779998 DM |
91 | module_param_array(index, int, NULL, 0444); |
92 | MODULE_PARM_DESC(index, "Index value for the USB audio adapter."); | |
93 | module_param_array(id, charp, NULL, 0444); | |
94 | MODULE_PARM_DESC(id, "ID string for the USB audio adapter."); | |
95 | module_param_array(enable, bool, NULL, 0444); | |
96 | MODULE_PARM_DESC(enable, "Enable USB audio adapter."); | |
97 | module_param_array(vid, int, NULL, 0444); | |
98 | MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device."); | |
99 | module_param_array(pid, int, NULL, 0444); | |
100 | MODULE_PARM_DESC(pid, "Product ID for the USB audio device."); | |
e5779998 DM |
101 | module_param_array(device_setup, int, NULL, 0444); |
102 | MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); | |
103 | module_param(ignore_ctl_error, bool, 0444); | |
104 | MODULE_PARM_DESC(ignore_ctl_error, | |
105 | "Ignore errors from USB controller for mixer interfaces."); | |
ef02e29b EZ |
106 | module_param(autoclock, bool, 0444); |
107 | MODULE_PARM_DESC(autoclock, "Enable auto-clock selection for UAC2 devices (default: yes)."); | |
e2703363 TI |
108 | module_param_array(quirk_alias, charp, NULL, 0444); |
109 | MODULE_PARM_DESC(quirk_alias, "Quirk aliases, e.g. 0123abcd:5678beef."); | |
f274baa4 TI |
110 | module_param_named(use_vmalloc, snd_usb_use_vmalloc, bool, 0444); |
111 | MODULE_PARM_DESC(use_vmalloc, "Use vmalloc for PCM intermediate buffers (default: yes)."); | |
e5779998 DM |
112 | |
113 | /* | |
114 | * we keep the snd_usb_audio_t instances by ourselves for merging | |
115 | * the all interfaces on the same card as one sound device. | |
116 | */ | |
117 | ||
118 | static DEFINE_MUTEX(register_mutex); | |
119 | static struct snd_usb_audio *usb_chip[SNDRV_CARDS]; | |
120 | static struct usb_driver usb_audio_driver; | |
121 | ||
122 | /* | |
123 | * disconnect streams | |
4c8c3a4f | 124 | * called from usb_audio_disconnect() |
e5779998 | 125 | */ |
a6cece9d | 126 | static void snd_usb_stream_disconnect(struct snd_usb_stream *as) |
e5779998 DM |
127 | { |
128 | int idx; | |
e5779998 DM |
129 | struct snd_usb_substream *subs; |
130 | ||
e5779998 DM |
131 | for (idx = 0; idx < 2; idx++) { |
132 | subs = &as->substream[idx]; | |
133 | if (!subs->num_formats) | |
76195fb0 | 134 | continue; |
e5779998 | 135 | subs->interface = -1; |
edcd3633 DM |
136 | subs->data_endpoint = NULL; |
137 | subs->sync_endpoint = NULL; | |
e5779998 DM |
138 | } |
139 | } | |
140 | ||
141 | static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int interface) | |
142 | { | |
143 | struct usb_device *dev = chip->dev; | |
144 | struct usb_host_interface *alts; | |
145 | struct usb_interface_descriptor *altsd; | |
146 | struct usb_interface *iface = usb_ifnum_to_if(dev, interface); | |
147 | ||
148 | if (!iface) { | |
0ba41d91 TI |
149 | dev_err(&dev->dev, "%u:%d : does not exist\n", |
150 | ctrlif, interface); | |
e5779998 DM |
151 | return -EINVAL; |
152 | } | |
153 | ||
342cda29 CL |
154 | alts = &iface->altsetting[0]; |
155 | altsd = get_iface_desc(alts); | |
156 | ||
157 | /* | |
158 | * Android with both accessory and audio interfaces enabled gets the | |
159 | * interface numbers wrong. | |
160 | */ | |
161 | if ((chip->usb_id == USB_ID(0x18d1, 0x2d04) || | |
162 | chip->usb_id == USB_ID(0x18d1, 0x2d05)) && | |
163 | interface == 0 && | |
164 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && | |
165 | altsd->bInterfaceSubClass == USB_SUBCLASS_VENDOR_SPEC) { | |
166 | interface = 2; | |
167 | iface = usb_ifnum_to_if(dev, interface); | |
168 | if (!iface) | |
169 | return -EINVAL; | |
170 | alts = &iface->altsetting[0]; | |
171 | altsd = get_iface_desc(alts); | |
172 | } | |
173 | ||
e5779998 | 174 | if (usb_interface_claimed(iface)) { |
0ba41d91 TI |
175 | dev_dbg(&dev->dev, "%d:%d: skipping, already claimed\n", |
176 | ctrlif, interface); | |
e5779998 DM |
177 | return -EINVAL; |
178 | } | |
179 | ||
e5779998 DM |
180 | if ((altsd->bInterfaceClass == USB_CLASS_AUDIO || |
181 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) && | |
182 | altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) { | |
79289e24 TI |
183 | int err = __snd_usbmidi_create(chip->card, iface, |
184 | &chip->midi_list, NULL, | |
185 | chip->usb_id); | |
e5779998 | 186 | if (err < 0) { |
0ba41d91 TI |
187 | dev_err(&dev->dev, |
188 | "%u:%d: cannot create sequencer device\n", | |
189 | ctrlif, interface); | |
e5779998 DM |
190 | return -EINVAL; |
191 | } | |
192 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && | |
198 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || | |
199 | altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) { | |
0ba41d91 TI |
200 | dev_dbg(&dev->dev, |
201 | "%u:%d: skipping non-supported interface %d\n", | |
202 | ctrlif, interface, altsd->bInterfaceClass); | |
e5779998 DM |
203 | /* skip non-supported classes */ |
204 | return -EINVAL; | |
205 | } | |
206 | ||
207 | if (snd_usb_get_speed(dev) == USB_SPEED_LOW) { | |
0ba41d91 | 208 | dev_err(&dev->dev, "low speed audio streaming not supported\n"); |
e5779998 DM |
209 | return -EINVAL; |
210 | } | |
211 | ||
e8e8babf | 212 | if (! snd_usb_parse_audio_interface(chip, interface)) { |
e5779998 DM |
213 | usb_set_interface(dev, interface, 0); /* reset the current interface */ |
214 | usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); | |
e5779998 DM |
215 | } |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | /* | |
221 | * parse audio control descriptor and create pcm/midi streams | |
222 | */ | |
223 | static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) | |
224 | { | |
225 | struct usb_device *dev = chip->dev; | |
226 | struct usb_host_interface *host_iface; | |
227 | struct usb_interface_descriptor *altsd; | |
e5779998 DM |
228 | int i, protocol; |
229 | ||
230 | /* find audiocontrol interface */ | |
231 | host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0]; | |
e5779998 DM |
232 | altsd = get_iface_desc(host_iface); |
233 | protocol = altsd->bInterfaceProtocol; | |
234 | ||
e5779998 | 235 | switch (protocol) { |
a2acad82 | 236 | default: |
0ba41d91 TI |
237 | dev_warn(&dev->dev, |
238 | "unknown interface protocol %#02x, assuming v1\n", | |
239 | protocol); | |
a2acad82 CL |
240 | /* fall through */ |
241 | ||
e5779998 | 242 | case UAC_VERSION_1: { |
3763f618 JS |
243 | struct uac1_ac_header_descriptor *h1; |
244 | int rest_bytes; | |
245 | ||
246 | h1 = snd_usb_find_csint_desc(host_iface->extra, | |
247 | host_iface->extralen, | |
248 | NULL, UAC_HEADER); | |
3e96d728 | 249 | if (!h1 || h1->bLength < sizeof(*h1)) { |
3763f618 JS |
250 | dev_err(&dev->dev, "cannot find UAC_HEADER\n"); |
251 | return -EINVAL; | |
252 | } | |
253 | ||
254 | rest_bytes = (void *)(host_iface->extra + | |
255 | host_iface->extralen) - (void *)h1; | |
256 | ||
257 | /* just to be sure -- this shouldn't hit at all */ | |
258 | if (rest_bytes <= 0) { | |
259 | dev_err(&dev->dev, "invalid control header\n"); | |
260 | return -EINVAL; | |
261 | } | |
e5779998 | 262 | |
bfc81a8b TI |
263 | if (rest_bytes < sizeof(*h1)) { |
264 | dev_err(&dev->dev, "too short v1 buffer descriptor\n"); | |
265 | return -EINVAL; | |
266 | } | |
267 | ||
e5779998 | 268 | if (!h1->bInCollection) { |
0ba41d91 | 269 | dev_info(&dev->dev, "skipping empty audio interface (v1)\n"); |
e5779998 DM |
270 | return -EINVAL; |
271 | } | |
272 | ||
bfc81a8b TI |
273 | if (rest_bytes < h1->bLength) { |
274 | dev_err(&dev->dev, "invalid buffer length (v1)\n"); | |
275 | return -EINVAL; | |
276 | } | |
277 | ||
e5779998 | 278 | if (h1->bLength < sizeof(*h1) + h1->bInCollection) { |
0ba41d91 | 279 | dev_err(&dev->dev, "invalid UAC_HEADER (v1)\n"); |
e5779998 DM |
280 | return -EINVAL; |
281 | } | |
282 | ||
283 | for (i = 0; i < h1->bInCollection; i++) | |
284 | snd_usb_create_stream(chip, ctrlif, h1->baInterfaceNr[i]); | |
285 | ||
286 | break; | |
287 | } | |
288 | ||
9a2fe9b8 RB |
289 | case UAC_VERSION_2: |
290 | case UAC_VERSION_3: { | |
e5779998 DM |
291 | struct usb_interface_assoc_descriptor *assoc = |
292 | usb_ifnum_to_if(dev, ctrlif)->intf_assoc; | |
293 | ||
281a6ac0 CL |
294 | if (!assoc) { |
295 | /* | |
296 | * Firmware writers cannot count to three. So to find | |
297 | * the IAD on the NuForce UDH-100, also check the next | |
298 | * interface. | |
299 | */ | |
300 | struct usb_interface *iface = | |
301 | usb_ifnum_to_if(dev, ctrlif + 1); | |
302 | if (iface && | |
303 | iface->intf_assoc && | |
304 | iface->intf_assoc->bFunctionClass == USB_CLASS_AUDIO && | |
305 | iface->intf_assoc->bFunctionProtocol == UAC_VERSION_2) | |
306 | assoc = iface->intf_assoc; | |
307 | } | |
308 | ||
e5779998 | 309 | if (!assoc) { |
9a2fe9b8 | 310 | dev_err(&dev->dev, "Audio class v2/v3 interfaces need an interface association\n"); |
e5779998 DM |
311 | return -EINVAL; |
312 | } | |
313 | ||
17156f23 RB |
314 | if (protocol == UAC_VERSION_3) { |
315 | int badd = assoc->bFunctionSubClass; | |
316 | ||
317 | if (badd != UAC3_FUNCTION_SUBCLASS_FULL_ADC_3_0 && | |
318 | (badd < UAC3_FUNCTION_SUBCLASS_GENERIC_IO || | |
319 | badd > UAC3_FUNCTION_SUBCLASS_SPEAKERPHONE)) { | |
320 | dev_err(&dev->dev, | |
321 | "Unsupported UAC3 BADD profile\n"); | |
322 | return -EINVAL; | |
323 | } | |
324 | ||
325 | chip->badd_profile = badd; | |
326 | } | |
327 | ||
e5779998 DM |
328 | for (i = 0; i < assoc->bInterfaceCount; i++) { |
329 | int intf = assoc->bFirstInterface + i; | |
330 | ||
331 | if (intf != ctrlif) | |
332 | snd_usb_create_stream(chip, ctrlif, intf); | |
333 | } | |
334 | ||
335 | break; | |
336 | } | |
e5779998 DM |
337 | } |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | /* | |
343 | * free the chip instance | |
344 | * | |
345 | * here we have to do not much, since pcm and controls are already freed | |
346 | * | |
347 | */ | |
348 | ||
011ae2bf | 349 | static void snd_usb_audio_free(struct snd_card *card) |
e5779998 | 350 | { |
011ae2bf | 351 | struct snd_usb_audio *chip = card->private_data; |
a6cece9d | 352 | struct snd_usb_endpoint *ep, *n; |
92a586bd | 353 | |
a6cece9d TI |
354 | list_for_each_entry_safe(ep, n, &chip->ep_list, list) |
355 | snd_usb_endpoint_free(ep); | |
92a586bd | 356 | |
596580d0 | 357 | mutex_destroy(&chip->mutex); |
6ff1a253 TI |
358 | if (!atomic_read(&chip->shutdown)) |
359 | dev_set_drvdata(&chip->dev->dev, NULL); | |
e5779998 DM |
360 | } |
361 | ||
07eca5fc TI |
362 | static void usb_audio_make_shortname(struct usb_device *dev, |
363 | struct snd_usb_audio *chip, | |
364 | const struct snd_usb_audio_quirk *quirk) | |
365 | { | |
366 | struct snd_card *card = chip->card; | |
367 | ||
368 | if (quirk && quirk->product_name && *quirk->product_name) { | |
369 | strlcpy(card->shortname, quirk->product_name, | |
370 | sizeof(card->shortname)); | |
371 | return; | |
372 | } | |
373 | ||
374 | /* retrieve the device string as shortname */ | |
375 | if (!dev->descriptor.iProduct || | |
376 | usb_string(dev, dev->descriptor.iProduct, | |
377 | card->shortname, sizeof(card->shortname)) <= 0) { | |
378 | /* no name available from anywhere, so use ID */ | |
379 | sprintf(card->shortname, "USB Device %#04x:%#04x", | |
380 | USB_ID_VENDOR(chip->usb_id), | |
381 | USB_ID_PRODUCT(chip->usb_id)); | |
382 | } | |
383 | ||
384 | strim(card->shortname); | |
385 | } | |
386 | ||
387 | static void usb_audio_make_longname(struct usb_device *dev, | |
388 | struct snd_usb_audio *chip, | |
389 | const struct snd_usb_audio_quirk *quirk) | |
390 | { | |
391 | struct snd_card *card = chip->card; | |
392 | int len; | |
393 | ||
394 | /* shortcut - if any pre-defined string is given, use it */ | |
395 | if (quirk && quirk->profile_name && *quirk->profile_name) { | |
396 | strlcpy(card->longname, quirk->profile_name, | |
397 | sizeof(card->longname)); | |
398 | return; | |
399 | } | |
400 | ||
401 | if (quirk && quirk->vendor_name && *quirk->vendor_name) { | |
402 | len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname)); | |
403 | } else { | |
404 | /* retrieve the vendor and device strings as longname */ | |
405 | if (dev->descriptor.iManufacturer) | |
406 | len = usb_string(dev, dev->descriptor.iManufacturer, | |
407 | card->longname, sizeof(card->longname)); | |
408 | else | |
409 | len = 0; | |
410 | /* we don't really care if there isn't any vendor string */ | |
411 | } | |
412 | if (len > 0) { | |
413 | strim(card->longname); | |
414 | if (*card->longname) | |
415 | strlcat(card->longname, " ", sizeof(card->longname)); | |
416 | } | |
417 | ||
418 | strlcat(card->longname, card->shortname, sizeof(card->longname)); | |
419 | ||
420 | len = strlcat(card->longname, " at ", sizeof(card->longname)); | |
421 | ||
422 | if (len < sizeof(card->longname)) | |
423 | usb_make_path(dev, card->longname + len, sizeof(card->longname) - len); | |
424 | ||
425 | switch (snd_usb_get_speed(dev)) { | |
426 | case USB_SPEED_LOW: | |
427 | strlcat(card->longname, ", low speed", sizeof(card->longname)); | |
428 | break; | |
429 | case USB_SPEED_FULL: | |
430 | strlcat(card->longname, ", full speed", sizeof(card->longname)); | |
431 | break; | |
432 | case USB_SPEED_HIGH: | |
433 | strlcat(card->longname, ", high speed", sizeof(card->longname)); | |
434 | break; | |
435 | case USB_SPEED_SUPER: | |
436 | strlcat(card->longname, ", super speed", sizeof(card->longname)); | |
437 | break; | |
438 | case USB_SPEED_SUPER_PLUS: | |
439 | strlcat(card->longname, ", super speed plus", sizeof(card->longname)); | |
440 | break; | |
441 | default: | |
442 | break; | |
443 | } | |
444 | } | |
445 | ||
e5779998 DM |
446 | /* |
447 | * create a chip instance and set its names. | |
448 | */ | |
874b8d42 TI |
449 | static int snd_usb_audio_create(struct usb_interface *intf, |
450 | struct usb_device *dev, int idx, | |
e5779998 | 451 | const struct snd_usb_audio_quirk *quirk, |
03a1f48e | 452 | unsigned int usb_id, |
e5779998 DM |
453 | struct snd_usb_audio **rchip) |
454 | { | |
455 | struct snd_card *card; | |
456 | struct snd_usb_audio *chip; | |
07eca5fc | 457 | int err; |
e5779998 | 458 | char component[14]; |
e5779998 DM |
459 | |
460 | *rchip = NULL; | |
461 | ||
4f4e8f69 PZ |
462 | switch (snd_usb_get_speed(dev)) { |
463 | case USB_SPEED_LOW: | |
464 | case USB_SPEED_FULL: | |
465 | case USB_SPEED_HIGH: | |
df3774c5 | 466 | case USB_SPEED_WIRELESS: |
4f4e8f69 | 467 | case USB_SPEED_SUPER: |
748a1ccc | 468 | case USB_SPEED_SUPER_PLUS: |
4f4e8f69 PZ |
469 | break; |
470 | default: | |
0ba41d91 | 471 | dev_err(&dev->dev, "unknown device speed %d\n", snd_usb_get_speed(dev)); |
e5779998 DM |
472 | return -ENXIO; |
473 | } | |
474 | ||
874b8d42 | 475 | err = snd_card_new(&intf->dev, index[idx], id[idx], THIS_MODULE, |
011ae2bf | 476 | sizeof(*chip), &card); |
e5779998 | 477 | if (err < 0) { |
0ba41d91 | 478 | dev_err(&dev->dev, "cannot create card instance %d\n", idx); |
e5779998 DM |
479 | return err; |
480 | } | |
481 | ||
011ae2bf | 482 | chip = card->private_data; |
596580d0 | 483 | mutex_init(&chip->mutex); |
47ab1545 | 484 | init_waitqueue_head(&chip->shutdown_wait); |
e5779998 DM |
485 | chip->index = idx; |
486 | chip->dev = dev; | |
487 | chip->card = card; | |
488 | chip->setup = device_setup[idx]; | |
ef02e29b | 489 | chip->autoclock = autoclock; |
a6da499b | 490 | atomic_set(&chip->active, 1); /* avoid autopm during probing */ |
47ab1545 TI |
491 | atomic_set(&chip->usage_count, 0); |
492 | atomic_set(&chip->shutdown, 0); | |
e5779998 | 493 | |
03a1f48e | 494 | chip->usb_id = usb_id; |
e5779998 | 495 | INIT_LIST_HEAD(&chip->pcm_list); |
edcd3633 | 496 | INIT_LIST_HEAD(&chip->ep_list); |
e5779998 DM |
497 | INIT_LIST_HEAD(&chip->midi_list); |
498 | INIT_LIST_HEAD(&chip->mixer_list); | |
499 | ||
011ae2bf | 500 | card->private_free = snd_usb_audio_free; |
e5779998 DM |
501 | |
502 | strcpy(card->driver, "USB-Audio"); | |
503 | sprintf(component, "USB%04x:%04x", | |
504 | USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); | |
505 | snd_component_add(card, component); | |
506 | ||
07eca5fc TI |
507 | usb_audio_make_shortname(dev, chip, quirk); |
508 | usb_audio_make_longname(dev, chip, quirk); | |
e5779998 DM |
509 | |
510 | snd_usb_audio_create_proc(chip); | |
511 | ||
512 | *rchip = chip; | |
513 | return 0; | |
514 | } | |
515 | ||
e2703363 TI |
516 | /* look for a matching quirk alias id */ |
517 | static bool get_alias_id(struct usb_device *dev, unsigned int *id) | |
518 | { | |
519 | int i; | |
520 | unsigned int src, dst; | |
521 | ||
522 | for (i = 0; i < ARRAY_SIZE(quirk_alias); i++) { | |
523 | if (!quirk_alias[i] || | |
524 | sscanf(quirk_alias[i], "%x:%x", &src, &dst) != 2 || | |
525 | src != *id) | |
526 | continue; | |
527 | dev_info(&dev->dev, | |
528 | "device (%04x:%04x): applying quirk alias %04x:%04x\n", | |
529 | USB_ID_VENDOR(*id), USB_ID_PRODUCT(*id), | |
530 | USB_ID_VENDOR(dst), USB_ID_PRODUCT(dst)); | |
531 | *id = dst; | |
532 | return true; | |
533 | } | |
534 | ||
535 | return false; | |
536 | } | |
537 | ||
8824ae2d | 538 | static const struct usb_device_id usb_audio_ids[]; /* defined below */ |
e2703363 TI |
539 | |
540 | /* look for the corresponding quirk */ | |
541 | static const struct snd_usb_audio_quirk * | |
542 | get_alias_quirk(struct usb_device *dev, unsigned int id) | |
543 | { | |
544 | const struct usb_device_id *p; | |
545 | ||
546 | for (p = usb_audio_ids; p->match_flags; p++) { | |
547 | /* FIXME: this checks only vendor:product pair in the list */ | |
548 | if ((p->match_flags & USB_DEVICE_ID_MATCH_DEVICE) == | |
549 | USB_DEVICE_ID_MATCH_DEVICE && | |
550 | p->idVendor == USB_ID_VENDOR(id) && | |
551 | p->idProduct == USB_ID_PRODUCT(id)) | |
552 | return (const struct snd_usb_audio_quirk *)p->driver_info; | |
553 | } | |
554 | ||
555 | return NULL; | |
556 | } | |
557 | ||
e5779998 DM |
558 | /* |
559 | * probe the active usb device | |
560 | * | |
561 | * note that this can be called multiple times per a device, when it | |
562 | * includes multiple audio control interfaces. | |
563 | * | |
564 | * thus we check the usb device pointer and creates the card instance | |
565 | * only at the first time. the successive calls of this function will | |
566 | * append the pcm interface to the corresponding card. | |
567 | */ | |
4c8c3a4f TI |
568 | static int usb_audio_probe(struct usb_interface *intf, |
569 | const struct usb_device_id *usb_id) | |
e5779998 | 570 | { |
4c8c3a4f TI |
571 | struct usb_device *dev = interface_to_usbdev(intf); |
572 | const struct snd_usb_audio_quirk *quirk = | |
573 | (const struct snd_usb_audio_quirk *)usb_id->driver_info; | |
e5779998 | 574 | struct snd_usb_audio *chip; |
4c8c3a4f | 575 | int i, err; |
e5779998 DM |
576 | struct usb_host_interface *alts; |
577 | int ifnum; | |
578 | u32 id; | |
579 | ||
580 | alts = &intf->altsetting[0]; | |
581 | ifnum = get_iface_desc(alts)->bInterfaceNumber; | |
582 | id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), | |
583 | le16_to_cpu(dev->descriptor.idProduct)); | |
e2703363 TI |
584 | if (get_alias_id(dev, &id)) |
585 | quirk = get_alias_quirk(dev, id); | |
e5779998 | 586 | if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum) |
4c8c3a4f | 587 | return -ENXIO; |
e5779998 | 588 | |
79289e24 | 589 | err = snd_usb_apply_boot_quirk(dev, intf, quirk, id); |
4c8c3a4f TI |
590 | if (err < 0) |
591 | return err; | |
e5779998 DM |
592 | |
593 | /* | |
594 | * found a config. now register to ALSA | |
595 | */ | |
596 | ||
597 | /* check whether it's already registered */ | |
598 | chip = NULL; | |
599 | mutex_lock(®ister_mutex); | |
600 | for (i = 0; i < SNDRV_CARDS; i++) { | |
601 | if (usb_chip[i] && usb_chip[i]->dev == dev) { | |
47ab1545 | 602 | if (atomic_read(&usb_chip[i]->shutdown)) { |
0ba41d91 | 603 | dev_err(&dev->dev, "USB device is in the shutdown state, cannot create a card instance\n"); |
4c8c3a4f | 604 | err = -EIO; |
e5779998 DM |
605 | goto __error; |
606 | } | |
607 | chip = usb_chip[i]; | |
a6da499b | 608 | atomic_inc(&chip->active); /* avoid autopm */ |
e5779998 DM |
609 | break; |
610 | } | |
611 | } | |
612 | if (! chip) { | |
613 | /* it's a fresh one. | |
614 | * now look for an empty slot and create a new card instance | |
615 | */ | |
616 | for (i = 0; i < SNDRV_CARDS; i++) | |
108884e6 | 617 | if (!usb_chip[i] && |
e5779998 DM |
618 | (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) && |
619 | (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) { | |
108884e6 TN |
620 | if (enable[i]) { |
621 | err = snd_usb_audio_create(intf, dev, i, quirk, | |
622 | id, &chip); | |
623 | if (err < 0) | |
624 | goto __error; | |
625 | chip->pm_intf = intf; | |
626 | break; | |
627 | } else if (vid[i] != -1 || pid[i] != -1) { | |
628 | dev_info(&dev->dev, | |
629 | "device (%04x:%04x) is disabled\n", | |
630 | USB_ID_VENDOR(id), | |
631 | USB_ID_PRODUCT(id)); | |
632 | err = -ENOENT; | |
e5779998 | 633 | goto __error; |
108884e6 | 634 | } |
e5779998 DM |
635 | } |
636 | if (!chip) { | |
0ba41d91 | 637 | dev_err(&dev->dev, "no available usb audio device\n"); |
4c8c3a4f | 638 | err = -ENODEV; |
e5779998 DM |
639 | goto __error; |
640 | } | |
641 | } | |
76df5296 | 642 | dev_set_drvdata(&dev->dev, chip); |
e5779998 | 643 | |
7b6717e1 DM |
644 | /* |
645 | * For devices with more than one control interface, we assume the | |
646 | * first contains the audio controls. We might need a more specific | |
647 | * check here in the future. | |
648 | */ | |
649 | if (!chip->ctrl_intf) | |
650 | chip->ctrl_intf = alts; | |
79f920fb | 651 | |
5875c2cb DM |
652 | chip->txfr_quirk = 0; |
653 | err = 1; /* continue */ | |
654 | if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) { | |
655 | /* need some special handlings */ | |
4c8c3a4f TI |
656 | err = snd_usb_create_quirk(chip, intf, &usb_audio_driver, quirk); |
657 | if (err < 0) | |
5875c2cb DM |
658 | goto __error; |
659 | } | |
660 | ||
e5779998 DM |
661 | if (err > 0) { |
662 | /* create normal USB audio interfaces */ | |
4c8c3a4f TI |
663 | err = snd_usb_create_streams(chip, ifnum); |
664 | if (err < 0) | |
665 | goto __error; | |
666 | err = snd_usb_create_mixer(chip, ifnum, ignore_ctl_error); | |
667 | if (err < 0) | |
e5779998 | 668 | goto __error; |
e5779998 DM |
669 | } |
670 | ||
671 | /* we are allowed to call snd_card_register() many times */ | |
4c8c3a4f TI |
672 | err = snd_card_register(chip->card); |
673 | if (err < 0) | |
e5779998 | 674 | goto __error; |
e5779998 DM |
675 | |
676 | usb_chip[chip->index] = chip; | |
677 | chip->num_interfaces++; | |
4c8c3a4f | 678 | usb_set_intfdata(intf, chip); |
a6da499b | 679 | atomic_dec(&chip->active); |
e5779998 | 680 | mutex_unlock(®ister_mutex); |
4c8c3a4f | 681 | return 0; |
e5779998 DM |
682 | |
683 | __error: | |
61a6a108 | 684 | if (chip) { |
5f8cf712 HP |
685 | /* chip->active is inside the chip->card object, |
686 | * decrement before memory is possibly returned. | |
687 | */ | |
688 | atomic_dec(&chip->active); | |
61a6a108 TP |
689 | if (!chip->num_interfaces) |
690 | snd_card_free(chip->card); | |
61a6a108 | 691 | } |
e5779998 | 692 | mutex_unlock(®ister_mutex); |
4c8c3a4f | 693 | return err; |
e5779998 DM |
694 | } |
695 | ||
696 | /* | |
697 | * we need to take care of counter, since disconnection can be called also | |
698 | * many times as well as usb_audio_probe(). | |
699 | */ | |
4c8c3a4f | 700 | static void usb_audio_disconnect(struct usb_interface *intf) |
e5779998 | 701 | { |
4c8c3a4f | 702 | struct snd_usb_audio *chip = usb_get_intfdata(intf); |
e5779998 | 703 | struct snd_card *card; |
92a586bd | 704 | struct list_head *p; |
e5779998 | 705 | |
81b85b6b | 706 | if (chip == (void *)-1L) |
e5779998 DM |
707 | return; |
708 | ||
e5779998 | 709 | card = chip->card; |
10e44239 TI |
710 | |
711 | mutex_lock(®ister_mutex); | |
47ab1545 | 712 | if (atomic_inc_return(&chip->shutdown) == 1) { |
a6cece9d | 713 | struct snd_usb_stream *as; |
92a586bd | 714 | struct snd_usb_endpoint *ep; |
a6cece9d | 715 | struct usb_mixer_interface *mixer; |
92a586bd | 716 | |
47ab1545 TI |
717 | /* wait until all pending tasks done; |
718 | * they are protected by snd_usb_lock_shutdown() | |
719 | */ | |
720 | wait_event(chip->shutdown_wait, | |
721 | !atomic_read(&chip->usage_count)); | |
e5779998 DM |
722 | snd_card_disconnect(card); |
723 | /* release the pcm resources */ | |
a6cece9d TI |
724 | list_for_each_entry(as, &chip->pcm_list, list) { |
725 | snd_usb_stream_disconnect(as); | |
e5779998 | 726 | } |
edcd3633 | 727 | /* release the endpoint resources */ |
92a586bd TI |
728 | list_for_each_entry(ep, &chip->ep_list, list) { |
729 | snd_usb_endpoint_release(ep); | |
edcd3633 | 730 | } |
e5779998 DM |
731 | /* release the midi resources */ |
732 | list_for_each(p, &chip->midi_list) { | |
733 | snd_usbmidi_disconnect(p); | |
734 | } | |
735 | /* release mixer resources */ | |
a6cece9d TI |
736 | list_for_each_entry(mixer, &chip->mixer_list, list) { |
737 | snd_usb_mixer_disconnect(mixer); | |
e5779998 | 738 | } |
0725dda2 TI |
739 | } |
740 | ||
741 | chip->num_interfaces--; | |
742 | if (chip->num_interfaces <= 0) { | |
e5779998 DM |
743 | usb_chip[chip->index] = NULL; |
744 | mutex_unlock(®ister_mutex); | |
745 | snd_card_free_when_closed(card); | |
746 | } else { | |
747 | mutex_unlock(®ister_mutex); | |
748 | } | |
749 | } | |
750 | ||
47ab1545 TI |
751 | /* lock the shutdown (disconnect) task and autoresume */ |
752 | int snd_usb_lock_shutdown(struct snd_usb_audio *chip) | |
88a8516a | 753 | { |
47ab1545 | 754 | int err; |
88a8516a | 755 | |
47ab1545 TI |
756 | atomic_inc(&chip->usage_count); |
757 | if (atomic_read(&chip->shutdown)) { | |
758 | err = -EIO; | |
759 | goto error; | |
760 | } | |
761 | err = snd_usb_autoresume(chip); | |
762 | if (err < 0) | |
763 | goto error; | |
764 | return 0; | |
88a8516a | 765 | |
47ab1545 TI |
766 | error: |
767 | if (atomic_dec_and_test(&chip->usage_count)) | |
768 | wake_up(&chip->shutdown_wait); | |
88a8516a ON |
769 | return err; |
770 | } | |
771 | ||
47ab1545 TI |
772 | /* autosuspend and unlock the shutdown */ |
773 | void snd_usb_unlock_shutdown(struct snd_usb_audio *chip) | |
774 | { | |
775 | snd_usb_autosuspend(chip); | |
776 | if (atomic_dec_and_test(&chip->usage_count)) | |
777 | wake_up(&chip->shutdown_wait); | |
778 | } | |
779 | ||
780 | #ifdef CONFIG_PM | |
781 | ||
782 | int snd_usb_autoresume(struct snd_usb_audio *chip) | |
783 | { | |
784 | if (atomic_read(&chip->shutdown)) | |
785 | return -EIO; | |
47ab1545 TI |
786 | if (atomic_inc_return(&chip->active) == 1) |
787 | return usb_autopm_get_interface(chip->pm_intf); | |
788 | return 0; | |
789 | } | |
790 | ||
88a8516a ON |
791 | void snd_usb_autosuspend(struct snd_usb_audio *chip) |
792 | { | |
5c06d68b TI |
793 | if (atomic_read(&chip->shutdown)) |
794 | return; | |
47ab1545 | 795 | if (atomic_dec_and_test(&chip->active)) |
88a8516a ON |
796 | usb_autopm_put_interface(chip->pm_intf); |
797 | } | |
798 | ||
e5779998 DM |
799 | static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) |
800 | { | |
801 | struct snd_usb_audio *chip = usb_get_intfdata(intf); | |
e5779998 | 802 | struct snd_usb_stream *as; |
edf7de31 | 803 | struct usb_mixer_interface *mixer; |
f7881e5e | 804 | struct list_head *p; |
e5779998 DM |
805 | |
806 | if (chip == (void *)-1L) | |
807 | return 0; | |
808 | ||
0662292a TI |
809 | chip->autosuspended = !!PMSG_IS_AUTO(message); |
810 | if (!chip->autosuspended) | |
88a8516a | 811 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); |
0662292a TI |
812 | if (!chip->num_suspended_intf++) { |
813 | list_for_each_entry(as, &chip->pcm_list, list) { | |
3f59aa11 | 814 | snd_usb_pcm_suspend(as); |
0662292a TI |
815 | as->substream[0].need_setup_ep = |
816 | as->substream[1].need_setup_ep = true; | |
aa53f986 | 817 | } |
0662292a TI |
818 | list_for_each(p, &chip->midi_list) |
819 | snd_usbmidi_suspend(p); | |
1c53e725 TI |
820 | list_for_each_entry(mixer, &chip->mixer_list, list) |
821 | snd_usb_mixer_suspend(mixer); | |
0662292a | 822 | } |
88a8516a | 823 | |
e5779998 DM |
824 | return 0; |
825 | } | |
826 | ||
400362f1 | 827 | static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume) |
e5779998 DM |
828 | { |
829 | struct snd_usb_audio *chip = usb_get_intfdata(intf); | |
3f59aa11 | 830 | struct snd_usb_stream *as; |
edf7de31 | 831 | struct usb_mixer_interface *mixer; |
f7881e5e | 832 | struct list_head *p; |
88a8516a | 833 | int err = 0; |
e5779998 DM |
834 | |
835 | if (chip == (void *)-1L) | |
836 | return 0; | |
837 | if (--chip->num_suspended_intf) | |
838 | return 0; | |
1ee23fe0 | 839 | |
47ab1545 | 840 | atomic_inc(&chip->active); /* avoid autopm */ |
3f59aa11 JS |
841 | |
842 | list_for_each_entry(as, &chip->pcm_list, list) { | |
843 | err = snd_usb_pcm_resume(as); | |
844 | if (err < 0) | |
845 | goto err_out; | |
846 | } | |
847 | ||
e5779998 DM |
848 | /* |
849 | * ALSA leaves material resumption to user space | |
edf7de31 | 850 | * we just notify and restart the mixers |
e5779998 | 851 | */ |
88a8516a | 852 | list_for_each_entry(mixer, &chip->mixer_list, list) { |
400362f1 | 853 | err = snd_usb_mixer_resume(mixer, reset_resume); |
88a8516a ON |
854 | if (err < 0) |
855 | goto err_out; | |
856 | } | |
e5779998 | 857 | |
f7881e5e AG |
858 | list_for_each(p, &chip->midi_list) { |
859 | snd_usbmidi_resume(p); | |
860 | } | |
861 | ||
88a8516a ON |
862 | if (!chip->autosuspended) |
863 | snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); | |
864 | chip->autosuspended = 0; | |
e5779998 | 865 | |
88a8516a | 866 | err_out: |
47ab1545 | 867 | atomic_dec(&chip->active); /* allow autopm after this point */ |
88a8516a | 868 | return err; |
e5779998 | 869 | } |
400362f1 TI |
870 | |
871 | static int usb_audio_resume(struct usb_interface *intf) | |
872 | { | |
873 | return __usb_audio_resume(intf, false); | |
874 | } | |
875 | ||
876 | static int usb_audio_reset_resume(struct usb_interface *intf) | |
877 | { | |
878 | return __usb_audio_resume(intf, true); | |
879 | } | |
6407d474 RD |
880 | #else |
881 | #define usb_audio_suspend NULL | |
882 | #define usb_audio_resume NULL | |
400362f1 | 883 | #define usb_audio_reset_resume NULL |
e5779998 DM |
884 | #endif /* CONFIG_PM */ |
885 | ||
8824ae2d | 886 | static const struct usb_device_id usb_audio_ids [] = { |
e5779998 DM |
887 | #include "quirks-table.h" |
888 | { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS), | |
889 | .bInterfaceClass = USB_CLASS_AUDIO, | |
890 | .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }, | |
891 | { } /* Terminating entry */ | |
892 | }; | |
f9d35435 | 893 | MODULE_DEVICE_TABLE(usb, usb_audio_ids); |
e5779998 DM |
894 | |
895 | /* | |
896 | * entry point for linux usb interface | |
897 | */ | |
898 | ||
899 | static struct usb_driver usb_audio_driver = { | |
900 | .name = "snd-usb-audio", | |
901 | .probe = usb_audio_probe, | |
902 | .disconnect = usb_audio_disconnect, | |
903 | .suspend = usb_audio_suspend, | |
904 | .resume = usb_audio_resume, | |
400362f1 | 905 | .reset_resume = usb_audio_reset_resume, |
e5779998 | 906 | .id_table = usb_audio_ids, |
88a8516a | 907 | .supports_autosuspend = 1, |
e5779998 DM |
908 | }; |
909 | ||
6b5a7c66 | 910 | module_usb_driver(usb_audio_driver); |