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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; | |
e0570446 | 95 | subs->tx_length_quirk = as->chip->tx_length_quirk; |
978520b7 | 96 | subs->speed = snd_usb_get_speed(subs->dev); |
1539d4f8 | 97 | subs->pkt_offset_adj = 0; |
edcd3633 DM |
98 | |
99 | snd_usb_set_pcm_ops(as->pcm, stream); | |
100 | ||
101 | list_add_tail(&fp->list, &subs->fmt_list); | |
102 | subs->formats |= fp->formats; | |
103 | subs->num_formats++; | |
104 | subs->fmt_type = fp->fmt_type; | |
8260ef07 | 105 | subs->ep_num = fp->endpoint; |
04324ccc TI |
106 | if (fp->channels > subs->channels_max) |
107 | subs->channels_max = fp->channels; | |
108 | } | |
109 | ||
110 | /* kctl callbacks for usb-audio channel maps */ | |
111 | static int usb_chmap_ctl_info(struct snd_kcontrol *kcontrol, | |
112 | struct snd_ctl_elem_info *uinfo) | |
113 | { | |
114 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
115 | struct snd_usb_substream *subs = info->private_data; | |
116 | ||
117 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
118 | uinfo->count = subs->channels_max; | |
119 | uinfo->value.integer.min = 0; | |
120 | uinfo->value.integer.max = SNDRV_CHMAP_LAST; | |
121 | return 0; | |
122 | } | |
123 | ||
124 | /* check whether a duplicated entry exists in the audiofmt list */ | |
125 | static bool have_dup_chmap(struct snd_usb_substream *subs, | |
126 | struct audioformat *fp) | |
127 | { | |
f67d71ae | 128 | struct audioformat *prev = fp; |
04324ccc | 129 | |
f67d71ae | 130 | list_for_each_entry_continue_reverse(prev, &subs->fmt_list, list) { |
04324ccc TI |
131 | if (prev->chmap && |
132 | !memcmp(prev->chmap, fp->chmap, sizeof(*fp->chmap))) | |
133 | return true; | |
134 | } | |
135 | return false; | |
136 | } | |
137 | ||
138 | static int usb_chmap_ctl_tlv(struct snd_kcontrol *kcontrol, int op_flag, | |
139 | unsigned int size, unsigned int __user *tlv) | |
140 | { | |
141 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
142 | struct snd_usb_substream *subs = info->private_data; | |
143 | struct audioformat *fp; | |
144 | unsigned int __user *dst; | |
145 | int count = 0; | |
146 | ||
147 | if (size < 8) | |
148 | return -ENOMEM; | |
149 | if (put_user(SNDRV_CTL_TLVT_CONTAINER, tlv)) | |
150 | return -EFAULT; | |
151 | size -= 8; | |
152 | dst = tlv + 2; | |
153 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
154 | int i, ch_bytes; | |
155 | ||
156 | if (!fp->chmap) | |
157 | continue; | |
158 | if (have_dup_chmap(subs, fp)) | |
159 | continue; | |
160 | /* copy the entry */ | |
161 | ch_bytes = fp->chmap->channels * 4; | |
162 | if (size < 8 + ch_bytes) | |
163 | return -ENOMEM; | |
164 | if (put_user(SNDRV_CTL_TLVT_CHMAP_FIXED, dst) || | |
165 | put_user(ch_bytes, dst + 1)) | |
166 | return -EFAULT; | |
167 | dst += 2; | |
168 | for (i = 0; i < fp->chmap->channels; i++, dst++) { | |
169 | if (put_user(fp->chmap->map[i], dst)) | |
170 | return -EFAULT; | |
171 | } | |
172 | ||
173 | count += 8 + ch_bytes; | |
174 | size -= 8 + ch_bytes; | |
175 | } | |
176 | if (put_user(count, tlv + 1)) | |
177 | return -EFAULT; | |
178 | return 0; | |
179 | } | |
180 | ||
181 | static int usb_chmap_ctl_get(struct snd_kcontrol *kcontrol, | |
182 | struct snd_ctl_elem_value *ucontrol) | |
183 | { | |
184 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
185 | struct snd_usb_substream *subs = info->private_data; | |
186 | struct snd_pcm_chmap_elem *chmap = NULL; | |
187 | int i; | |
188 | ||
189 | memset(ucontrol->value.integer.value, 0, | |
190 | sizeof(ucontrol->value.integer.value)); | |
191 | if (subs->cur_audiofmt) | |
192 | chmap = subs->cur_audiofmt->chmap; | |
193 | if (chmap) { | |
194 | for (i = 0; i < chmap->channels; i++) | |
195 | ucontrol->value.integer.value[i] = chmap->map[i]; | |
196 | } | |
197 | return 0; | |
198 | } | |
199 | ||
200 | /* create a chmap kctl assigned to the given USB substream */ | |
201 | static int add_chmap(struct snd_pcm *pcm, int stream, | |
202 | struct snd_usb_substream *subs) | |
203 | { | |
204 | struct audioformat *fp; | |
205 | struct snd_pcm_chmap *chmap; | |
206 | struct snd_kcontrol *kctl; | |
207 | int err; | |
208 | ||
209 | list_for_each_entry(fp, &subs->fmt_list, list) | |
210 | if (fp->chmap) | |
211 | goto ok; | |
212 | /* no chmap is found */ | |
213 | return 0; | |
214 | ||
215 | ok: | |
216 | err = snd_pcm_add_chmap_ctls(pcm, stream, NULL, 0, 0, &chmap); | |
217 | if (err < 0) | |
218 | return err; | |
219 | ||
220 | /* override handlers */ | |
221 | chmap->private_data = subs; | |
222 | kctl = chmap->kctl; | |
223 | kctl->info = usb_chmap_ctl_info; | |
224 | kctl->get = usb_chmap_ctl_get; | |
225 | kctl->tlv.c = usb_chmap_ctl_tlv; | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
230 | /* convert from USB ChannelConfig bits to ALSA chmap element */ | |
231 | static struct snd_pcm_chmap_elem *convert_chmap(int channels, unsigned int bits, | |
232 | int protocol) | |
233 | { | |
234 | static unsigned int uac1_maps[] = { | |
235 | SNDRV_CHMAP_FL, /* left front */ | |
236 | SNDRV_CHMAP_FR, /* right front */ | |
237 | SNDRV_CHMAP_FC, /* center front */ | |
238 | SNDRV_CHMAP_LFE, /* LFE */ | |
239 | SNDRV_CHMAP_SL, /* left surround */ | |
240 | SNDRV_CHMAP_SR, /* right surround */ | |
241 | SNDRV_CHMAP_FLC, /* left of center */ | |
242 | SNDRV_CHMAP_FRC, /* right of center */ | |
243 | SNDRV_CHMAP_RC, /* surround */ | |
244 | SNDRV_CHMAP_SL, /* side left */ | |
245 | SNDRV_CHMAP_SR, /* side right */ | |
246 | SNDRV_CHMAP_TC, /* top */ | |
247 | 0 /* terminator */ | |
248 | }; | |
249 | static unsigned int uac2_maps[] = { | |
250 | SNDRV_CHMAP_FL, /* front left */ | |
251 | SNDRV_CHMAP_FR, /* front right */ | |
252 | SNDRV_CHMAP_FC, /* front center */ | |
253 | SNDRV_CHMAP_LFE, /* LFE */ | |
254 | SNDRV_CHMAP_RL, /* back left */ | |
255 | SNDRV_CHMAP_RR, /* back right */ | |
256 | SNDRV_CHMAP_FLC, /* front left of center */ | |
257 | SNDRV_CHMAP_FRC, /* front right of center */ | |
258 | SNDRV_CHMAP_RC, /* back center */ | |
259 | SNDRV_CHMAP_SL, /* side left */ | |
260 | SNDRV_CHMAP_SR, /* side right */ | |
261 | SNDRV_CHMAP_TC, /* top center */ | |
262 | SNDRV_CHMAP_TFL, /* top front left */ | |
263 | SNDRV_CHMAP_TFC, /* top front center */ | |
264 | SNDRV_CHMAP_TFR, /* top front right */ | |
265 | SNDRV_CHMAP_TRL, /* top back left */ | |
266 | SNDRV_CHMAP_TRC, /* top back center */ | |
267 | SNDRV_CHMAP_TRR, /* top back right */ | |
268 | SNDRV_CHMAP_TFLC, /* top front left of center */ | |
269 | SNDRV_CHMAP_TFRC, /* top front right of center */ | |
270 | SNDRV_CHMAP_LLFE, /* left LFE */ | |
271 | SNDRV_CHMAP_RLFE, /* right LFE */ | |
272 | SNDRV_CHMAP_TSL, /* top side left */ | |
273 | SNDRV_CHMAP_TSR, /* top side right */ | |
274 | SNDRV_CHMAP_BC, /* bottom center */ | |
71373fdd AH |
275 | SNDRV_CHMAP_RLC, /* back left of center */ |
276 | SNDRV_CHMAP_RRC, /* back right of center */ | |
04324ccc TI |
277 | 0 /* terminator */ |
278 | }; | |
279 | struct snd_pcm_chmap_elem *chmap; | |
280 | const unsigned int *maps; | |
281 | int c; | |
282 | ||
04324ccc TI |
283 | if (channels > ARRAY_SIZE(chmap->map)) |
284 | return NULL; | |
285 | ||
286 | chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); | |
287 | if (!chmap) | |
288 | return NULL; | |
289 | ||
290 | maps = protocol == UAC_VERSION_2 ? uac2_maps : uac1_maps; | |
291 | chmap->channels = channels; | |
292 | c = 0; | |
0dca01c3 DH |
293 | |
294 | if (bits) { | |
295 | for (; bits && *maps; maps++, bits >>= 1) | |
296 | if (bits & 1) | |
297 | chmap->map[c++] = *maps; | |
298 | } else { | |
299 | /* If we're missing wChannelConfig, then guess something | |
300 | to make sure the channel map is not skipped entirely */ | |
301 | if (channels == 1) | |
302 | chmap->map[c++] = SNDRV_CHMAP_MONO; | |
303 | else | |
304 | for (; c < channels && *maps; maps++) | |
305 | chmap->map[c++] = *maps; | |
04324ccc TI |
306 | } |
307 | ||
308 | for (; c < channels; c++) | |
309 | chmap->map[c] = SNDRV_CHMAP_UNKNOWN; | |
310 | ||
311 | return chmap; | |
edcd3633 | 312 | } |
e8e8babf DM |
313 | |
314 | /* | |
315 | * add this endpoint to the chip instance. | |
316 | * if a stream with the same endpoint already exists, append to it. | |
836b34a9 VD |
317 | * if not, create a new pcm stream. note, fp is added to the substream |
318 | * fmt_list and will be freed on the chip instance release. do not free | |
319 | * fp or do remove it from the substream fmt_list to avoid double-free. | |
e8e8babf DM |
320 | */ |
321 | int snd_usb_add_audio_stream(struct snd_usb_audio *chip, | |
322 | int stream, | |
323 | struct audioformat *fp) | |
324 | { | |
e8e8babf DM |
325 | struct snd_usb_stream *as; |
326 | struct snd_usb_substream *subs; | |
327 | struct snd_pcm *pcm; | |
328 | int err; | |
329 | ||
88766f04 | 330 | list_for_each_entry(as, &chip->pcm_list, list) { |
e8e8babf DM |
331 | if (as->fmt_type != fp->fmt_type) |
332 | continue; | |
333 | subs = &as->substream[stream]; | |
8260ef07 | 334 | if (subs->ep_num == fp->endpoint) { |
e8e8babf DM |
335 | list_add_tail(&fp->list, &subs->fmt_list); |
336 | subs->num_formats++; | |
337 | subs->formats |= fp->formats; | |
338 | return 0; | |
339 | } | |
340 | } | |
341 | /* look for an empty stream */ | |
88766f04 | 342 | list_for_each_entry(as, &chip->pcm_list, list) { |
e8e8babf DM |
343 | if (as->fmt_type != fp->fmt_type) |
344 | continue; | |
345 | subs = &as->substream[stream]; | |
8260ef07 | 346 | if (subs->ep_num) |
e8e8babf DM |
347 | continue; |
348 | err = snd_pcm_new_stream(as->pcm, stream, 1); | |
349 | if (err < 0) | |
350 | return err; | |
351 | snd_usb_init_substream(as, stream, fp); | |
04324ccc | 352 | return add_chmap(as->pcm, stream, subs); |
e8e8babf DM |
353 | } |
354 | ||
355 | /* create a new pcm */ | |
356 | as = kzalloc(sizeof(*as), GFP_KERNEL); | |
357 | if (!as) | |
358 | return -ENOMEM; | |
359 | as->pcm_index = chip->pcm_devs; | |
360 | as->chip = chip; | |
361 | as->fmt_type = fp->fmt_type; | |
362 | err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs, | |
363 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0, | |
364 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1, | |
365 | &pcm); | |
366 | if (err < 0) { | |
367 | kfree(as); | |
368 | return err; | |
369 | } | |
370 | as->pcm = pcm; | |
371 | pcm->private_data = as; | |
372 | pcm->private_free = snd_usb_audio_pcm_free; | |
373 | pcm->info_flags = 0; | |
374 | if (chip->pcm_devs > 0) | |
375 | sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs); | |
376 | else | |
377 | strcpy(pcm->name, "USB Audio"); | |
378 | ||
379 | snd_usb_init_substream(as, stream, fp); | |
380 | ||
5ee20bc7 JR |
381 | /* |
382 | * Keep using head insertion for M-Audio Audiophile USB (tm) which has a | |
383 | * fix to swap capture stream order in conf/cards/USB-audio.conf | |
384 | */ | |
385 | if (chip->usb_id == USB_ID(0x0763, 0x2003)) | |
386 | list_add(&as->list, &chip->pcm_list); | |
387 | else | |
388 | list_add_tail(&as->list, &chip->pcm_list); | |
389 | ||
e8e8babf DM |
390 | chip->pcm_devs++; |
391 | ||
392 | snd_usb_proc_pcm_format_add(as); | |
393 | ||
04324ccc | 394 | return add_chmap(pcm, stream, &as->substream[stream]); |
e8e8babf DM |
395 | } |
396 | ||
397 | static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip, | |
398 | struct usb_host_interface *alts, | |
399 | int protocol, int iface_no) | |
400 | { | |
401 | /* parsed with a v1 header here. that's ok as we only look at the | |
402 | * header first which is the same for both versions */ | |
403 | struct uac_iso_endpoint_descriptor *csep; | |
404 | struct usb_interface_descriptor *altsd = get_iface_desc(alts); | |
405 | int attributes = 0; | |
406 | ||
407 | csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT); | |
408 | ||
409 | /* Creamware Noah has this descriptor after the 2nd endpoint */ | |
410 | if (!csep && altsd->bNumEndpoints >= 2) | |
411 | csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); | |
412 | ||
ebfc594c DM |
413 | /* |
414 | * If we can't locate the USB_DT_CS_ENDPOINT descriptor in the extra | |
415 | * bytes after the first endpoint, go search the entire interface. | |
416 | * Some devices have it directly *before* the standard endpoint. | |
417 | */ | |
418 | if (!csep) | |
419 | csep = snd_usb_find_desc(alts->extra, alts->extralen, NULL, USB_DT_CS_ENDPOINT); | |
420 | ||
e8e8babf DM |
421 | if (!csep || csep->bLength < 7 || |
422 | csep->bDescriptorSubtype != UAC_EP_GENERAL) { | |
0ba41d91 TI |
423 | usb_audio_warn(chip, |
424 | "%u:%d : no or invalid class specific endpoint descriptor\n", | |
425 | iface_no, altsd->bAlternateSetting); | |
e8e8babf DM |
426 | return 0; |
427 | } | |
428 | ||
429 | if (protocol == UAC_VERSION_1) { | |
430 | attributes = csep->bmAttributes; | |
431 | } else { | |
432 | struct uac2_iso_endpoint_descriptor *csep2 = | |
433 | (struct uac2_iso_endpoint_descriptor *) csep; | |
434 | ||
435 | attributes = csep->bmAttributes & UAC_EP_CS_ATTR_FILL_MAX; | |
436 | ||
437 | /* emulate the endpoint attributes of a v1 device */ | |
438 | if (csep2->bmControls & UAC2_CONTROL_PITCH) | |
439 | attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL; | |
440 | } | |
441 | ||
442 | return attributes; | |
443 | } | |
444 | ||
04324ccc TI |
445 | /* find an input terminal descriptor (either UAC1 or UAC2) with the given |
446 | * terminal id | |
447 | */ | |
448 | static void * | |
449 | snd_usb_find_input_terminal_descriptor(struct usb_host_interface *ctrl_iface, | |
e8e8babf DM |
450 | int terminal_id) |
451 | { | |
452 | struct uac2_input_terminal_descriptor *term = NULL; | |
453 | ||
454 | while ((term = snd_usb_find_csint_desc(ctrl_iface->extra, | |
455 | ctrl_iface->extralen, | |
456 | term, UAC_INPUT_TERMINAL))) { | |
457 | if (term->bTerminalID == terminal_id) | |
458 | return term; | |
459 | } | |
460 | ||
461 | return NULL; | |
462 | } | |
463 | ||
464 | static struct uac2_output_terminal_descriptor * | |
465 | snd_usb_find_output_terminal_descriptor(struct usb_host_interface *ctrl_iface, | |
466 | int terminal_id) | |
467 | { | |
468 | struct uac2_output_terminal_descriptor *term = NULL; | |
469 | ||
470 | while ((term = snd_usb_find_csint_desc(ctrl_iface->extra, | |
471 | ctrl_iface->extralen, | |
472 | term, UAC_OUTPUT_TERMINAL))) { | |
473 | if (term->bTerminalID == terminal_id) | |
474 | return term; | |
475 | } | |
476 | ||
477 | return NULL; | |
478 | } | |
479 | ||
480 | int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) | |
481 | { | |
482 | struct usb_device *dev; | |
483 | struct usb_interface *iface; | |
484 | struct usb_host_interface *alts; | |
485 | struct usb_interface_descriptor *altsd; | |
486 | int i, altno, err, stream; | |
2fcdb06d | 487 | unsigned int format = 0, num_channels = 0; |
e8e8babf DM |
488 | struct audioformat *fp = NULL; |
489 | int num, protocol, clock = 0; | |
490 | struct uac_format_type_i_continuous_descriptor *fmt; | |
04324ccc | 491 | unsigned int chconfig; |
e8e8babf DM |
492 | |
493 | dev = chip->dev; | |
494 | ||
495 | /* parse the interface's altsettings */ | |
496 | iface = usb_ifnum_to_if(dev, iface_no); | |
497 | ||
498 | num = iface->num_altsetting; | |
499 | ||
500 | /* | |
501 | * Dallas DS4201 workaround: It presents 5 altsettings, but the last | |
502 | * one misses syncpipe, and does not produce any sound. | |
503 | */ | |
504 | if (chip->usb_id == USB_ID(0x04fa, 0x4201)) | |
505 | num = 4; | |
506 | ||
507 | for (i = 0; i < num; i++) { | |
508 | alts = &iface->altsetting[i]; | |
509 | altsd = get_iface_desc(alts); | |
510 | protocol = altsd->bInterfaceProtocol; | |
511 | /* skip invalid one */ | |
aafe77cc CL |
512 | if (((altsd->bInterfaceClass != USB_CLASS_AUDIO || |
513 | (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING && | |
514 | altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC)) && | |
e8e8babf | 515 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || |
e8e8babf DM |
516 | altsd->bNumEndpoints < 1 || |
517 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0) | |
518 | continue; | |
519 | /* must be isochronous */ | |
520 | if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != | |
521 | USB_ENDPOINT_XFER_ISOC) | |
522 | continue; | |
523 | /* check direction */ | |
524 | stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ? | |
525 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
526 | altno = altsd->bAlternateSetting; | |
527 | ||
528 | if (snd_usb_apply_interface_quirk(chip, iface_no, altno)) | |
529 | continue; | |
530 | ||
aafe77cc CL |
531 | /* |
532 | * Roland audio streaming interfaces are marked with protocols | |
533 | * 0/1/2, but are UAC 1 compatible. | |
534 | */ | |
535 | if (USB_ID_VENDOR(chip->usb_id) == 0x0582 && | |
536 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && | |
537 | protocol <= 2) | |
538 | protocol = UAC_VERSION_1; | |
539 | ||
04324ccc | 540 | chconfig = 0; |
e8e8babf DM |
541 | /* get audio formats */ |
542 | switch (protocol) { | |
543 | default: | |
0ba41d91 TI |
544 | dev_dbg(&dev->dev, "%u:%d: unknown interface protocol %#02x, assuming v1\n", |
545 | iface_no, altno, protocol); | |
e8e8babf DM |
546 | protocol = UAC_VERSION_1; |
547 | /* fall through */ | |
548 | ||
549 | case UAC_VERSION_1: { | |
550 | struct uac1_as_header_descriptor *as = | |
551 | snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL); | |
04324ccc | 552 | struct uac_input_terminal_descriptor *iterm; |
e8e8babf DM |
553 | |
554 | if (!as) { | |
0ba41d91 TI |
555 | dev_err(&dev->dev, |
556 | "%u:%d : UAC_AS_GENERAL descriptor not found\n", | |
557 | iface_no, altno); | |
e8e8babf DM |
558 | continue; |
559 | } | |
560 | ||
561 | if (as->bLength < sizeof(*as)) { | |
0ba41d91 TI |
562 | dev_err(&dev->dev, |
563 | "%u:%d : invalid UAC_AS_GENERAL desc\n", | |
564 | iface_no, altno); | |
e8e8babf DM |
565 | continue; |
566 | } | |
567 | ||
568 | format = le16_to_cpu(as->wFormatTag); /* remember the format value */ | |
04324ccc TI |
569 | |
570 | iterm = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf, | |
571 | as->bTerminalLink); | |
572 | if (iterm) { | |
573 | num_channels = iterm->bNrChannels; | |
574 | chconfig = le16_to_cpu(iterm->wChannelConfig); | |
575 | } | |
576 | ||
e8e8babf DM |
577 | break; |
578 | } | |
579 | ||
580 | case UAC_VERSION_2: { | |
581 | struct uac2_input_terminal_descriptor *input_term; | |
582 | struct uac2_output_terminal_descriptor *output_term; | |
583 | struct uac2_as_header_descriptor *as = | |
584 | snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL); | |
585 | ||
586 | if (!as) { | |
0ba41d91 TI |
587 | dev_err(&dev->dev, |
588 | "%u:%d : UAC_AS_GENERAL descriptor not found\n", | |
589 | iface_no, altno); | |
e8e8babf DM |
590 | continue; |
591 | } | |
592 | ||
593 | if (as->bLength < sizeof(*as)) { | |
0ba41d91 TI |
594 | dev_err(&dev->dev, |
595 | "%u:%d : invalid UAC_AS_GENERAL desc\n", | |
596 | iface_no, altno); | |
e8e8babf DM |
597 | continue; |
598 | } | |
599 | ||
600 | num_channels = as->bNrChannels; | |
601 | format = le32_to_cpu(as->bmFormats); | |
e3e35f75 | 602 | chconfig = le32_to_cpu(as->bmChannelConfig); |
e8e8babf DM |
603 | |
604 | /* lookup the terminal associated to this interface | |
605 | * to extract the clock */ | |
606 | input_term = snd_usb_find_input_terminal_descriptor(chip->ctrl_intf, | |
607 | as->bTerminalLink); | |
608 | if (input_term) { | |
609 | clock = input_term->bCSourceID; | |
e3e35f75 DH |
610 | if (!chconfig && (num_channels == input_term->bNrChannels)) |
611 | chconfig = le32_to_cpu(input_term->bmChannelConfig); | |
e8e8babf DM |
612 | break; |
613 | } | |
614 | ||
615 | output_term = snd_usb_find_output_terminal_descriptor(chip->ctrl_intf, | |
616 | as->bTerminalLink); | |
617 | if (output_term) { | |
618 | clock = output_term->bCSourceID; | |
619 | break; | |
620 | } | |
621 | ||
0ba41d91 TI |
622 | dev_err(&dev->dev, |
623 | "%u:%d : bogus bTerminalLink %d\n", | |
624 | iface_no, altno, as->bTerminalLink); | |
e8e8babf DM |
625 | continue; |
626 | } | |
627 | } | |
628 | ||
629 | /* get format type */ | |
630 | fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE); | |
631 | if (!fmt) { | |
0ba41d91 TI |
632 | dev_err(&dev->dev, |
633 | "%u:%d : no UAC_FORMAT_TYPE desc\n", | |
634 | iface_no, altno); | |
e8e8babf DM |
635 | continue; |
636 | } | |
637 | if (((protocol == UAC_VERSION_1) && (fmt->bLength < 8)) || | |
638 | ((protocol == UAC_VERSION_2) && (fmt->bLength < 6))) { | |
0ba41d91 TI |
639 | dev_err(&dev->dev, |
640 | "%u:%d : invalid UAC_FORMAT_TYPE desc\n", | |
641 | iface_no, altno); | |
e8e8babf DM |
642 | continue; |
643 | } | |
644 | ||
645 | /* | |
646 | * Blue Microphones workaround: The last altsetting is identical | |
647 | * with the previous one, except for a larger packet size, but | |
648 | * is actually a mislabeled two-channel setting; ignore it. | |
649 | */ | |
650 | if (fmt->bNrChannels == 1 && | |
651 | fmt->bSubframeSize == 2 && | |
652 | altno == 2 && num == 3 && | |
653 | fp && fp->altsetting == 1 && fp->channels == 1 && | |
654 | fp->formats == SNDRV_PCM_FMTBIT_S16_LE && | |
655 | protocol == UAC_VERSION_1 && | |
656 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == | |
657 | fp->maxpacksize * 2) | |
658 | continue; | |
659 | ||
660 | fp = kzalloc(sizeof(*fp), GFP_KERNEL); | |
661 | if (! fp) { | |
0ba41d91 | 662 | dev_err(&dev->dev, "cannot malloc\n"); |
e8e8babf DM |
663 | return -ENOMEM; |
664 | } | |
665 | ||
666 | fp->iface = iface_no; | |
667 | fp->altsetting = altno; | |
668 | fp->altset_idx = i; | |
669 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
670 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
671 | fp->datainterval = snd_usb_parse_datainterval(chip, alts); | |
8f898e92 | 672 | fp->protocol = protocol; |
e8e8babf | 673 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); |
e8e8babf DM |
674 | fp->channels = num_channels; |
675 | if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) | |
676 | fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) | |
677 | * (fp->maxpacksize & 0x7ff); | |
678 | fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, iface_no); | |
679 | fp->clock = clock; | |
836b34a9 | 680 | INIT_LIST_HEAD(&fp->list); |
e8e8babf DM |
681 | |
682 | /* some quirks for attributes here */ | |
683 | ||
684 | switch (chip->usb_id) { | |
685 | case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */ | |
686 | /* Optoplay sets the sample rate attribute although | |
687 | * it seems not supporting it in fact. | |
688 | */ | |
689 | fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE; | |
690 | break; | |
691 | case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */ | |
692 | case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ | |
693 | /* doesn't set the sample rate attribute, but supports it */ | |
694 | fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE; | |
695 | break; | |
696 | case USB_ID(0x0763, 0x2001): /* M-Audio Quattro USB */ | |
697 | case USB_ID(0x0763, 0x2012): /* M-Audio Fast Track Pro USB */ | |
698 | case USB_ID(0x047f, 0x0ca1): /* plantronics headset */ | |
699 | case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is | |
700 | an older model 77d:223) */ | |
701 | /* | |
702 | * plantronics headset and Griffin iMic have set adaptive-in | |
703 | * although it's really not... | |
704 | */ | |
705 | fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE; | |
706 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
707 | fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE; | |
708 | else | |
709 | fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC; | |
710 | break; | |
711 | } | |
712 | ||
713 | /* ok, let's parse further... */ | |
8f898e92 | 714 | if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream) < 0) { |
e8e8babf DM |
715 | kfree(fp->rate_table); |
716 | kfree(fp); | |
717 | fp = NULL; | |
718 | continue; | |
719 | } | |
720 | ||
504333df DH |
721 | /* Create chmap */ |
722 | if (fp->channels != num_channels) | |
723 | chconfig = 0; | |
724 | fp->chmap = convert_chmap(fp->channels, chconfig, protocol); | |
725 | ||
0ba41d91 | 726 | dev_dbg(&dev->dev, "%u:%d: add audio endpoint %#x\n", iface_no, altno, fp->endpoint); |
e8e8babf DM |
727 | err = snd_usb_add_audio_stream(chip, stream, fp); |
728 | if (err < 0) { | |
836b34a9 | 729 | list_del(&fp->list); /* unlink for avoiding double-free */ |
e8e8babf | 730 | kfree(fp->rate_table); |
04324ccc | 731 | kfree(fp->chmap); |
e8e8babf DM |
732 | kfree(fp); |
733 | return err; | |
734 | } | |
735 | /* try to set the interface... */ | |
736 | usb_set_interface(chip->dev, iface_no, altno); | |
737 | snd_usb_init_pitch(chip, iface_no, alts, fp); | |
738 | snd_usb_init_sample_rate(chip, iface_no, alts, fp, fp->rate_max); | |
739 | } | |
740 | return 0; | |
741 | } | |
742 |