Commit | Line | Data |
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e8e8babf DM |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | */ | |
16 | ||
17 | ||
18 | #include <linux/init.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/usb.h> | |
21 | #include <linux/usb/audio.h> | |
22 | #include <linux/usb/audio-v2.h> | |
23 | ||
24 | #include <sound/core.h> | |
25 | #include <sound/pcm.h> | |
04324ccc TI |
26 | #include <sound/control.h> |
27 | #include <sound/tlv.h> | |
e8e8babf DM |
28 | |
29 | #include "usbaudio.h" | |
30 | #include "card.h" | |
31 | #include "proc.h" | |
32 | #include "quirks.h" | |
33 | #include "endpoint.h" | |
e8e8babf DM |
34 | #include "pcm.h" |
35 | #include "helper.h" | |
36 | #include "format.h" | |
37 | #include "clock.h" | |
38 | #include "stream.h" | |
39 | ||
40 | /* | |
41 | * free a substream | |
42 | */ | |
43 | static void free_substream(struct snd_usb_substream *subs) | |
44 | { | |
88766f04 | 45 | struct audioformat *fp, *n; |
e8e8babf DM |
46 | |
47 | if (!subs->num_formats) | |
48 | return; /* not initialized */ | |
88766f04 | 49 | list_for_each_entry_safe(fp, n, &subs->fmt_list, list) { |
e8e8babf | 50 | kfree(fp->rate_table); |
04324ccc | 51 | kfree(fp->chmap); |
e8e8babf DM |
52 | kfree(fp); |
53 | } | |
54 | kfree(subs->rate_list.list); | |
55 | } | |
56 | ||
57 | ||
58 | /* | |
59 | * free a usb stream instance | |
60 | */ | |
61 | static void snd_usb_audio_stream_free(struct snd_usb_stream *stream) | |
62 | { | |
63 | free_substream(&stream->substream[0]); | |
64 | free_substream(&stream->substream[1]); | |
65 | list_del(&stream->list); | |
66 | kfree(stream); | |
67 | } | |
68 | ||
69 | static void snd_usb_audio_pcm_free(struct snd_pcm *pcm) | |
70 | { | |
71 | struct snd_usb_stream *stream = pcm->private_data; | |
72 | if (stream) { | |
73 | stream->pcm = NULL; | |
74 | snd_usb_audio_stream_free(stream); | |
75 | } | |
76 | } | |
77 | ||
edcd3633 DM |
78 | /* |
79 | * initialize the substream instance. | |
80 | */ | |
81 | ||
82 | static void snd_usb_init_substream(struct snd_usb_stream *as, | |
83 | int stream, | |
84 | struct audioformat *fp) | |
85 | { | |
86 | struct snd_usb_substream *subs = &as->substream[stream]; | |
87 | ||
88 | INIT_LIST_HEAD(&subs->fmt_list); | |
89 | spin_lock_init(&subs->lock); | |
90 | ||
91 | subs->stream = as; | |
92 | subs->direction = stream; | |
93 | subs->dev = as->chip->dev; | |
94 | subs->txfr_quirk = as->chip->txfr_quirk; | |
978520b7 | 95 | subs->speed = snd_usb_get_speed(subs->dev); |
1539d4f8 | 96 | subs->pkt_offset_adj = 0; |
edcd3633 DM |
97 | |
98 | snd_usb_set_pcm_ops(as->pcm, stream); | |
99 | ||
100 | list_add_tail(&fp->list, &subs->fmt_list); | |
101 | subs->formats |= fp->formats; | |
102 | subs->num_formats++; | |
103 | subs->fmt_type = fp->fmt_type; | |
8260ef07 | 104 | subs->ep_num = fp->endpoint; |
04324ccc TI |
105 | if (fp->channels > subs->channels_max) |
106 | subs->channels_max = fp->channels; | |
107 | } | |
108 | ||
109 | /* kctl callbacks for usb-audio channel maps */ | |
110 | static int usb_chmap_ctl_info(struct snd_kcontrol *kcontrol, | |
111 | struct snd_ctl_elem_info *uinfo) | |
112 | { | |
113 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
114 | struct snd_usb_substream *subs = info->private_data; | |
115 | ||
116 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
117 | uinfo->count = subs->channels_max; | |
118 | uinfo->value.integer.min = 0; | |
119 | uinfo->value.integer.max = SNDRV_CHMAP_LAST; | |
120 | return 0; | |
121 | } | |
122 | ||
123 | /* check whether a duplicated entry exists in the audiofmt list */ | |
124 | static bool have_dup_chmap(struct snd_usb_substream *subs, | |
125 | struct audioformat *fp) | |
126 | { | |
127 | struct list_head *p; | |
128 | ||
129 | for (p = fp->list.prev; p != &subs->fmt_list; p = p->prev) { | |
130 | struct audioformat *prev; | |
131 | prev = list_entry(p, struct audioformat, list); | |
132 | if (prev->chmap && | |
133 | !memcmp(prev->chmap, fp->chmap, sizeof(*fp->chmap))) | |
134 | return true; | |
135 | } | |
136 | return false; | |
137 | } | |
138 | ||
139 | static int usb_chmap_ctl_tlv(struct snd_kcontrol *kcontrol, int op_flag, | |
140 | unsigned int size, unsigned int __user *tlv) | |
141 | { | |
142 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
143 | struct snd_usb_substream *subs = info->private_data; | |
144 | struct audioformat *fp; | |
145 | unsigned int __user *dst; | |
146 | int count = 0; | |
147 | ||
148 | if (size < 8) | |
149 | return -ENOMEM; | |
150 | if (put_user(SNDRV_CTL_TLVT_CONTAINER, tlv)) | |
151 | return -EFAULT; | |
152 | size -= 8; | |
153 | dst = tlv + 2; | |
154 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
155 | int i, ch_bytes; | |
156 | ||
157 | if (!fp->chmap) | |
158 | continue; | |
159 | if (have_dup_chmap(subs, fp)) | |
160 | continue; | |
161 | /* copy the entry */ | |
162 | ch_bytes = fp->chmap->channels * 4; | |
163 | if (size < 8 + ch_bytes) | |
164 | return -ENOMEM; | |
165 | if (put_user(SNDRV_CTL_TLVT_CHMAP_FIXED, dst) || | |
166 | put_user(ch_bytes, dst + 1)) | |
167 | return -EFAULT; | |
168 | dst += 2; | |
169 | for (i = 0; i < fp->chmap->channels; i++, dst++) { | |
170 | if (put_user(fp->chmap->map[i], dst)) | |
171 | return -EFAULT; | |
172 | } | |
173 | ||
174 | count += 8 + ch_bytes; | |
175 | size -= 8 + ch_bytes; | |
176 | } | |
177 | if (put_user(count, tlv + 1)) | |
178 | return -EFAULT; | |
179 | return 0; | |
180 | } | |
181 | ||
182 | static int usb_chmap_ctl_get(struct snd_kcontrol *kcontrol, | |
183 | struct snd_ctl_elem_value *ucontrol) | |
184 | { | |
185 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
186 | struct snd_usb_substream *subs = info->private_data; | |
187 | struct snd_pcm_chmap_elem *chmap = NULL; | |
188 | int i; | |
189 | ||
190 | memset(ucontrol->value.integer.value, 0, | |
191 | sizeof(ucontrol->value.integer.value)); | |
192 | if (subs->cur_audiofmt) | |
193 | chmap = subs->cur_audiofmt->chmap; | |
194 | if (chmap) { | |
195 | for (i = 0; i < chmap->channels; i++) | |
196 | ucontrol->value.integer.value[i] = chmap->map[i]; | |
197 | } | |
198 | return 0; | |
199 | } | |
200 | ||
201 | /* create a chmap kctl assigned to the given USB substream */ | |
202 | static int add_chmap(struct snd_pcm *pcm, int stream, | |
203 | struct snd_usb_substream *subs) | |
204 | { | |
205 | struct audioformat *fp; | |
206 | struct snd_pcm_chmap *chmap; | |
207 | struct snd_kcontrol *kctl; | |
208 | int err; | |
209 | ||
210 | list_for_each_entry(fp, &subs->fmt_list, list) | |
211 | if (fp->chmap) | |
212 | goto ok; | |
213 | /* no chmap is found */ | |
214 | return 0; | |
215 | ||
216 | ok: | |
217 | err = snd_pcm_add_chmap_ctls(pcm, stream, NULL, 0, 0, &chmap); | |
218 | if (err < 0) | |
219 | return err; | |
220 | ||
221 | /* override handlers */ | |
222 | chmap->private_data = subs; | |
223 | kctl = chmap->kctl; | |
224 | kctl->info = usb_chmap_ctl_info; | |
225 | kctl->get = usb_chmap_ctl_get; | |
226 | kctl->tlv.c = usb_chmap_ctl_tlv; | |
227 | ||
228 | return 0; | |
229 | } | |
230 | ||
231 | /* convert from USB ChannelConfig bits to ALSA chmap element */ | |
232 | static struct snd_pcm_chmap_elem *convert_chmap(int channels, unsigned int bits, | |
233 | int protocol) | |
234 | { | |
235 | static unsigned int uac1_maps[] = { | |
236 | SNDRV_CHMAP_FL, /* left front */ | |
237 | SNDRV_CHMAP_FR, /* right front */ | |
238 | SNDRV_CHMAP_FC, /* center front */ | |
239 | SNDRV_CHMAP_LFE, /* LFE */ | |
240 | SNDRV_CHMAP_SL, /* left surround */ | |
241 | SNDRV_CHMAP_SR, /* right surround */ | |
242 | SNDRV_CHMAP_FLC, /* left of center */ | |
243 | SNDRV_CHMAP_FRC, /* right of center */ | |
244 | SNDRV_CHMAP_RC, /* surround */ | |
245 | SNDRV_CHMAP_SL, /* side left */ | |
246 | SNDRV_CHMAP_SR, /* side right */ | |
247 | SNDRV_CHMAP_TC, /* top */ | |
248 | 0 /* terminator */ | |
249 | }; | |
250 | static unsigned int uac2_maps[] = { | |
251 | SNDRV_CHMAP_FL, /* front left */ | |
252 | SNDRV_CHMAP_FR, /* front right */ | |
253 | SNDRV_CHMAP_FC, /* front center */ | |
254 | SNDRV_CHMAP_LFE, /* LFE */ | |
255 | SNDRV_CHMAP_RL, /* back left */ | |
256 | SNDRV_CHMAP_RR, /* back right */ | |
257 | SNDRV_CHMAP_FLC, /* front left of center */ | |
258 | SNDRV_CHMAP_FRC, /* front right of center */ | |
259 | SNDRV_CHMAP_RC, /* back center */ | |
260 | SNDRV_CHMAP_SL, /* side left */ | |
261 | SNDRV_CHMAP_SR, /* side right */ | |
262 | SNDRV_CHMAP_TC, /* top center */ | |
263 | SNDRV_CHMAP_TFL, /* top front left */ | |
264 | SNDRV_CHMAP_TFC, /* top front center */ | |
265 | SNDRV_CHMAP_TFR, /* top front right */ | |
266 | SNDRV_CHMAP_TRL, /* top back left */ | |
267 | SNDRV_CHMAP_TRC, /* top back center */ | |
268 | SNDRV_CHMAP_TRR, /* top back right */ | |
269 | SNDRV_CHMAP_TFLC, /* top front left of center */ | |
270 | SNDRV_CHMAP_TFRC, /* top front right of center */ | |
271 | SNDRV_CHMAP_LLFE, /* left LFE */ | |
272 | SNDRV_CHMAP_RLFE, /* right LFE */ | |
273 | SNDRV_CHMAP_TSL, /* top side left */ | |
274 | SNDRV_CHMAP_TSR, /* top side right */ | |
275 | SNDRV_CHMAP_BC, /* bottom center */ | |
276 | SNDRV_CHMAP_BLC, /* bottom left center */ | |
277 | SNDRV_CHMAP_BRC, /* bottom right center */ | |
278 | 0 /* terminator */ | |
279 | }; | |
280 | struct snd_pcm_chmap_elem *chmap; | |
281 | const unsigned int *maps; | |
282 | int c; | |
283 | ||
284 | if (!bits) | |
285 | return NULL; | |
286 | if (channels > ARRAY_SIZE(chmap->map)) | |
287 | return NULL; | |
288 | ||
289 | chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); | |
290 | if (!chmap) | |
291 | return NULL; | |
292 | ||
293 | maps = protocol == UAC_VERSION_2 ? uac2_maps : uac1_maps; | |
294 | chmap->channels = channels; | |
295 | c = 0; | |
296 | for (; bits && *maps; maps++, bits >>= 1) { | |
297 | if (bits & 1) | |
298 | chmap->map[c++] = *maps; | |
299 | } | |
300 | ||
301 | for (; c < channels; c++) | |
302 | chmap->map[c] = SNDRV_CHMAP_UNKNOWN; | |
303 | ||
304 | return chmap; | |
edcd3633 | 305 | } |
e8e8babf DM |
306 | |
307 | /* | |
308 | * add this endpoint to the chip instance. | |
309 | * if a stream with the same endpoint already exists, append to it. | |
310 | * if not, create a new pcm stream. | |
311 | */ | |
312 | int snd_usb_add_audio_stream(struct snd_usb_audio *chip, | |
313 | int stream, | |
314 | struct audioformat *fp) | |
315 | { | |
e8e8babf DM |
316 | struct snd_usb_stream *as; |
317 | struct snd_usb_substream *subs; | |
318 | struct snd_pcm *pcm; | |
319 | int err; | |
320 | ||
88766f04 | 321 | list_for_each_entry(as, &chip->pcm_list, list) { |
e8e8babf DM |
322 | if (as->fmt_type != fp->fmt_type) |
323 | continue; | |
324 | subs = &as->substream[stream]; | |
8260ef07 | 325 | if (subs->ep_num == fp->endpoint) { |
e8e8babf DM |
326 | list_add_tail(&fp->list, &subs->fmt_list); |
327 | subs->num_formats++; | |
328 | subs->formats |= fp->formats; | |
329 | return 0; | |
330 | } | |
331 | } | |
332 | /* look for an empty stream */ | |
88766f04 | 333 | list_for_each_entry(as, &chip->pcm_list, list) { |
e8e8babf DM |
334 | if (as->fmt_type != fp->fmt_type) |
335 | continue; | |
336 | subs = &as->substream[stream]; | |
8260ef07 | 337 | if (subs->ep_num) |
e8e8babf DM |
338 | continue; |
339 | err = snd_pcm_new_stream(as->pcm, stream, 1); | |
340 | if (err < 0) | |
341 | return err; | |
342 | snd_usb_init_substream(as, stream, fp); | |
04324ccc | 343 | return add_chmap(as->pcm, stream, subs); |
e8e8babf DM |
344 | } |
345 | ||
346 | /* create a new pcm */ | |
347 | as = kzalloc(sizeof(*as), GFP_KERNEL); | |
348 | if (!as) | |
349 | return -ENOMEM; | |
350 | as->pcm_index = chip->pcm_devs; | |
351 | as->chip = chip; | |
352 | as->fmt_type = fp->fmt_type; | |
353 | err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs, | |
354 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0, | |
355 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1, | |
356 | &pcm); | |
357 | if (err < 0) { | |
358 | kfree(as); | |
359 | return err; | |
360 | } | |
361 | as->pcm = pcm; | |
362 | pcm->private_data = as; | |
363 | pcm->private_free = snd_usb_audio_pcm_free; | |
364 | pcm->info_flags = 0; | |
365 | if (chip->pcm_devs > 0) | |
366 | sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs); | |
367 | else | |
368 | strcpy(pcm->name, "USB Audio"); | |
369 | ||
370 | snd_usb_init_substream(as, stream, fp); | |
371 | ||
372 | list_add(&as->list, &chip->pcm_list); | |
373 | chip->pcm_devs++; | |
374 | ||
375 | snd_usb_proc_pcm_format_add(as); | |
376 | ||
04324ccc | 377 | return add_chmap(pcm, stream, &as->substream[stream]); |
e8e8babf DM |
378 | } |
379 | ||
380 | static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip, | |
381 | struct usb_host_interface *alts, | |
382 | int protocol, int iface_no) | |
383 | { | |
384 | /* parsed with a v1 header here. that's ok as we only look at the | |
385 | * header first which is the same for both versions */ | |
386 | struct uac_iso_endpoint_descriptor *csep; | |
387 | struct usb_interface_descriptor *altsd = get_iface_desc(alts); | |
388 | int attributes = 0; | |
389 | ||
390 | csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT); | |
391 | ||
392 | /* Creamware Noah has this descriptor after the 2nd endpoint */ | |
393 | if (!csep && altsd->bNumEndpoints >= 2) | |
394 | csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); | |
395 | ||
ebfc594c DM |
396 | /* |
397 | * If we can't locate the USB_DT_CS_ENDPOINT descriptor in the extra | |
398 | * bytes after the first endpoint, go search the entire interface. | |
399 | * Some devices have it directly *before* the standard endpoint. | |
400 | */ | |
401 | if (!csep) | |
402 | csep = snd_usb_find_desc(alts->extra, alts->extralen, NULL, USB_DT_CS_ENDPOINT); | |
403 | ||
e8e8babf DM |
404 | if (!csep || csep->bLength < 7 || |
405 | csep->bDescriptorSubtype != UAC_EP_GENERAL) { | |
406 | snd_printk(KERN_WARNING "%d:%u:%d : no or invalid" | |
407 | " class specific endpoint descriptor\n", | |
408 | chip->dev->devnum, iface_no, | |
409 | altsd->bAlternateSetting); | |
410 | return 0; | |
411 | } | |
412 | ||
413 | if (protocol == UAC_VERSION_1) { | |
414 | attributes = csep->bmAttributes; | |
415 | } else { | |
416 | struct uac2_iso_endpoint_descriptor *csep2 = | |
417 | (struct uac2_iso_endpoint_descriptor *) csep; | |
418 | ||
419 | attributes = csep->bmAttributes & UAC_EP_CS_ATTR_FILL_MAX; | |
420 | ||
421 | /* emulate the endpoint attributes of a v1 device */ | |
422 | if (csep2->bmControls & UAC2_CONTROL_PITCH) | |
423 | attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL; | |
424 | } | |
425 | ||
426 | return attributes; | |
427 | } | |
428 | ||
04324ccc TI |
429 | /* find an input terminal descriptor (either UAC1 or UAC2) with the given |
430 | * terminal id | |
431 | */ | |
432 | static void * | |
433 | snd_usb_find_input_terminal_descriptor(struct usb_host_interface *ctrl_iface, | |
e8e8babf DM |
434 | int terminal_id) |
435 | { | |
436 | struct uac2_input_terminal_descriptor *term = NULL; | |
437 | ||
438 | while ((term = snd_usb_find_csint_desc(ctrl_iface->extra, | |
439 | ctrl_iface->extralen, | |
440 | term, UAC_INPUT_TERMINAL))) { | |
441 | if (term->bTerminalID == terminal_id) | |
442 | return term; | |
443 | } | |
444 | ||
445 | return NULL; | |
446 | } | |
447 | ||
448 | static struct uac2_output_terminal_descriptor * | |
449 | snd_usb_find_output_terminal_descriptor(struct usb_host_interface *ctrl_iface, | |
450 | int terminal_id) | |
451 | { | |
452 | struct uac2_output_terminal_descriptor *term = NULL; | |
453 | ||
454 | while ((term = snd_usb_find_csint_desc(ctrl_iface->extra, | |
455 | ctrl_iface->extralen, | |
456 | term, UAC_OUTPUT_TERMINAL))) { | |
457 | if (term->bTerminalID == terminal_id) | |
458 | return term; | |
459 | } | |
460 | ||
461 | return NULL; | |
462 | } | |
463 | ||
464 | int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) | |
465 | { | |
466 | struct usb_device *dev; | |
467 | struct usb_interface *iface; | |
468 | struct usb_host_interface *alts; | |
469 | struct usb_interface_descriptor *altsd; | |
470 | int i, altno, err, stream; | |
2fcdb06d | 471 | unsigned int format = 0, num_channels = 0; |
e8e8babf DM |
472 | struct audioformat *fp = NULL; |
473 | int num, protocol, clock = 0; | |
474 | struct uac_format_type_i_continuous_descriptor *fmt; | |
04324ccc | 475 | unsigned int chconfig; |
e8e8babf DM |
476 | |
477 | dev = chip->dev; | |
478 | ||
479 | /* parse the interface's altsettings */ | |
480 | iface = usb_ifnum_to_if(dev, iface_no); | |
481 | ||
482 | num = iface->num_altsetting; | |
483 | ||
484 | /* | |
485 | * Dallas DS4201 workaround: It presents 5 altsettings, but the last | |
486 | * one misses syncpipe, and does not produce any sound. | |
487 | */ | |
488 | if (chip->usb_id == USB_ID(0x04fa, 0x4201)) | |
489 | num = 4; | |
490 | ||
491 | for (i = 0; i < num; i++) { | |
492 | alts = &iface->altsetting[i]; | |
493 | altsd = get_iface_desc(alts); | |
494 | protocol = altsd->bInterfaceProtocol; | |
495 | /* skip invalid one */ | |
aafe77cc CL |
496 | if (((altsd->bInterfaceClass != USB_CLASS_AUDIO || |
497 | (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING && | |
498 | altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC)) && | |
e8e8babf | 499 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || |
e8e8babf DM |
500 | altsd->bNumEndpoints < 1 || |
501 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0) | |
502 | continue; | |
503 | /* must be isochronous */ | |
504 | if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != | |
505 | USB_ENDPOINT_XFER_ISOC) | |
506 | continue; | |
507 | /* check direction */ | |
508 | stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ? | |
509 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
510 | altno = altsd->bAlternateSetting; | |
511 | ||
512 | if (snd_usb_apply_interface_quirk(chip, iface_no, altno)) | |
513 | continue; | |
514 | ||
aafe77cc CL |
515 | /* |
516 | * Roland audio streaming interfaces are marked with protocols | |
517 | * 0/1/2, but are UAC 1 compatible. | |
518 | */ | |
519 | if (USB_ID_VENDOR(chip->usb_id) == 0x0582 && | |
520 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && | |
521 | protocol <= 2) | |
522 | protocol = UAC_VERSION_1; | |
523 | ||
04324ccc | 524 | chconfig = 0; |
e8e8babf DM |
525 | /* get audio formats */ |
526 | switch (protocol) { | |
527 | default: | |
528 | snd_printdd(KERN_WARNING "%d:%u:%d: unknown interface protocol %#02x, assuming v1\n", | |
529 | dev->devnum, iface_no, altno, protocol); | |
530 | protocol = UAC_VERSION_1; | |
531 | /* fall through */ | |
532 | ||
533 | case UAC_VERSION_1: { | |
534 | struct uac1_as_header_descriptor *as = | |
535 | snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL); | |
04324ccc | 536 | struct uac_input_terminal_descriptor *iterm; |
e8e8babf DM |
537 | |
538 | if (!as) { | |
539 | snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n", | |
540 | dev->devnum, iface_no, altno); | |
541 | continue; | |
542 | } | |
543 | ||
544 | if (as->bLength < sizeof(*as)) { | |
545 | snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n", | |
546 | dev->devnum, iface_no, altno); | |
547 | continue; | |
548 | } | |
549 | ||
550 | format = le16_to_cpu(as->wFormatTag); /* remember the format value */ | |
04324ccc TI |
551 | |
552 | iterm = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf, | |
553 | as->bTerminalLink); | |
554 | if (iterm) { | |
555 | num_channels = iterm->bNrChannels; | |
556 | chconfig = le16_to_cpu(iterm->wChannelConfig); | |
557 | } | |
558 | ||
e8e8babf DM |
559 | break; |
560 | } | |
561 | ||
562 | case UAC_VERSION_2: { | |
563 | struct uac2_input_terminal_descriptor *input_term; | |
564 | struct uac2_output_terminal_descriptor *output_term; | |
565 | struct uac2_as_header_descriptor *as = | |
566 | snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL); | |
567 | ||
568 | if (!as) { | |
569 | snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n", | |
570 | dev->devnum, iface_no, altno); | |
571 | continue; | |
572 | } | |
573 | ||
574 | if (as->bLength < sizeof(*as)) { | |
575 | snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n", | |
576 | dev->devnum, iface_no, altno); | |
577 | continue; | |
578 | } | |
579 | ||
580 | num_channels = as->bNrChannels; | |
581 | format = le32_to_cpu(as->bmFormats); | |
582 | ||
583 | /* lookup the terminal associated to this interface | |
584 | * to extract the clock */ | |
585 | input_term = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf, | |
586 | as->bTerminalLink); | |
587 | if (input_term) { | |
588 | clock = input_term->bCSourceID; | |
04324ccc | 589 | chconfig = le32_to_cpu(input_term->bmChannelConfig); |
e8e8babf DM |
590 | break; |
591 | } | |
592 | ||
593 | output_term = snd_usb_find_output_terminal_descriptor(chip->ctrl_intf, | |
594 | as->bTerminalLink); | |
595 | if (output_term) { | |
596 | clock = output_term->bCSourceID; | |
597 | break; | |
598 | } | |
599 | ||
600 | snd_printk(KERN_ERR "%d:%u:%d : bogus bTerminalLink %d\n", | |
601 | dev->devnum, iface_no, altno, as->bTerminalLink); | |
602 | continue; | |
603 | } | |
604 | } | |
605 | ||
606 | /* get format type */ | |
607 | fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE); | |
608 | if (!fmt) { | |
609 | snd_printk(KERN_ERR "%d:%u:%d : no UAC_FORMAT_TYPE desc\n", | |
610 | dev->devnum, iface_no, altno); | |
611 | continue; | |
612 | } | |
613 | if (((protocol == UAC_VERSION_1) && (fmt->bLength < 8)) || | |
614 | ((protocol == UAC_VERSION_2) && (fmt->bLength < 6))) { | |
615 | snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n", | |
616 | dev->devnum, iface_no, altno); | |
617 | continue; | |
618 | } | |
619 | ||
620 | /* | |
621 | * Blue Microphones workaround: The last altsetting is identical | |
622 | * with the previous one, except for a larger packet size, but | |
623 | * is actually a mislabeled two-channel setting; ignore it. | |
624 | */ | |
625 | if (fmt->bNrChannels == 1 && | |
626 | fmt->bSubframeSize == 2 && | |
627 | altno == 2 && num == 3 && | |
628 | fp && fp->altsetting == 1 && fp->channels == 1 && | |
629 | fp->formats == SNDRV_PCM_FMTBIT_S16_LE && | |
630 | protocol == UAC_VERSION_1 && | |
631 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == | |
632 | fp->maxpacksize * 2) | |
633 | continue; | |
634 | ||
635 | fp = kzalloc(sizeof(*fp), GFP_KERNEL); | |
636 | if (! fp) { | |
637 | snd_printk(KERN_ERR "cannot malloc\n"); | |
638 | return -ENOMEM; | |
639 | } | |
640 | ||
641 | fp->iface = iface_no; | |
642 | fp->altsetting = altno; | |
643 | fp->altset_idx = i; | |
644 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
645 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
646 | fp->datainterval = snd_usb_parse_datainterval(chip, alts); | |
8f898e92 | 647 | fp->protocol = protocol; |
e8e8babf | 648 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); |
e8e8babf DM |
649 | fp->channels = num_channels; |
650 | if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) | |
651 | fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) | |
652 | * (fp->maxpacksize & 0x7ff); | |
653 | fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no); | |
654 | fp->clock = clock; | |
04324ccc | 655 | fp->chmap = convert_chmap(num_channels, chconfig, protocol); |
e8e8babf DM |
656 | |
657 | /* some quirks for attributes here */ | |
658 | ||
659 | switch (chip->usb_id) { | |
660 | case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */ | |
661 | /* Optoplay sets the sample rate attribute although | |
662 | * it seems not supporting it in fact. | |
663 | */ | |
664 | fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE; | |
665 | break; | |
666 | case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */ | |
667 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
668 | /* doesn't set the sample rate attribute, but supports it */ | |
669 | fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE; | |
670 | break; | |
671 | case USB_ID(0x0763, 0x2001): /* M-Audio Quattro USB */ | |
672 | case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro USB */ | |
673 | case USB_ID(0x047f, 0x0ca1): /* plantronics headset */ | |
674 | case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is | |
675 | an older model 77d:223) */ | |
676 | /* | |
677 | * plantronics headset and Griffin iMic have set adaptive-in | |
678 | * although it's really not... | |
679 | */ | |
680 | fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE; | |
681 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
682 | fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE; | |
683 | else | |
684 | fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC; | |
685 | break; | |
686 | } | |
687 | ||
688 | /* ok, let's parse further... */ | |
8f898e92 | 689 | if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream) < 0) { |
e8e8babf | 690 | kfree(fp->rate_table); |
04324ccc | 691 | kfree(fp->chmap); |
e8e8babf DM |
692 | kfree(fp); |
693 | fp = NULL; | |
694 | continue; | |
695 | } | |
696 | ||
697 | snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint); | |
698 | err = snd_usb_add_audio_stream(chip, stream, fp); | |
699 | if (err < 0) { | |
700 | kfree(fp->rate_table); | |
04324ccc | 701 | kfree(fp->chmap); |
e8e8babf DM |
702 | kfree(fp); |
703 | return err; | |
704 | } | |
705 | /* try to set the interface... */ | |
706 | usb_set_interface(chip->dev, iface_no, altno); | |
707 | snd_usb_init_pitch(chip, iface_no, alts, fp); | |
708 | snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max); | |
709 | } | |
710 | return 0; | |
711 | } | |
712 |