Commit | Line | Data |
---|---|---|
1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e8e8babf | 2 | /* |
e8e8babf DM |
3 | */ |
4 | ||
5 | ||
6 | #include <linux/init.h> | |
7 | #include <linux/slab.h> | |
8 | #include <linux/usb.h> | |
9 | #include <linux/usb/audio.h> | |
10 | #include <linux/usb/audio-v2.h> | |
9a2fe9b8 | 11 | #include <linux/usb/audio-v3.h> |
e8e8babf DM |
12 | |
13 | #include <sound/core.h> | |
14 | #include <sound/pcm.h> | |
04324ccc TI |
15 | #include <sound/control.h> |
16 | #include <sound/tlv.h> | |
e8e8babf DM |
17 | |
18 | #include "usbaudio.h" | |
19 | #include "card.h" | |
20 | #include "proc.h" | |
21 | #include "quirks.h" | |
22 | #include "endpoint.h" | |
e8e8babf DM |
23 | #include "pcm.h" |
24 | #include "helper.h" | |
25 | #include "format.h" | |
26 | #include "clock.h" | |
27 | #include "stream.h" | |
7edf3b5e | 28 | #include "power.h" |
66354f18 | 29 | #include "media.h" |
e8e8babf | 30 | |
c1ae5e7f TI |
31 | static void audioformat_free(struct audioformat *fp) |
32 | { | |
33 | list_del(&fp->list); /* unlink for avoiding double-free */ | |
34 | kfree(fp->rate_table); | |
35 | kfree(fp->chmap); | |
36 | kfree(fp); | |
37 | } | |
38 | ||
e8e8babf DM |
39 | /* |
40 | * free a substream | |
41 | */ | |
42 | static void free_substream(struct snd_usb_substream *subs) | |
43 | { | |
88766f04 | 44 | struct audioformat *fp, *n; |
e8e8babf DM |
45 | |
46 | if (!subs->num_formats) | |
47 | return; /* not initialized */ | |
c1ae5e7f TI |
48 | list_for_each_entry_safe(fp, n, &subs->fmt_list, list) |
49 | audioformat_free(fp); | |
7edf3b5e | 50 | kfree(subs->str_pd); |
66354f18 | 51 | snd_media_stream_delete(subs); |
e8e8babf DM |
52 | } |
53 | ||
54 | ||
55 | /* | |
56 | * free a usb stream instance | |
57 | */ | |
58 | static void snd_usb_audio_stream_free(struct snd_usb_stream *stream) | |
59 | { | |
60 | free_substream(&stream->substream[0]); | |
61 | free_substream(&stream->substream[1]); | |
62 | list_del(&stream->list); | |
63 | kfree(stream); | |
64 | } | |
65 | ||
66 | static void snd_usb_audio_pcm_free(struct snd_pcm *pcm) | |
67 | { | |
68 | struct snd_usb_stream *stream = pcm->private_data; | |
69 | if (stream) { | |
70 | stream->pcm = NULL; | |
71 | snd_usb_audio_stream_free(stream); | |
72 | } | |
73 | } | |
74 | ||
edcd3633 DM |
75 | /* |
76 | * initialize the substream instance. | |
77 | */ | |
78 | ||
79 | static void snd_usb_init_substream(struct snd_usb_stream *as, | |
80 | int stream, | |
7edf3b5e JS |
81 | struct audioformat *fp, |
82 | struct snd_usb_power_domain *pd) | |
edcd3633 DM |
83 | { |
84 | struct snd_usb_substream *subs = &as->substream[stream]; | |
85 | ||
86 | INIT_LIST_HEAD(&subs->fmt_list); | |
87 | spin_lock_init(&subs->lock); | |
88 | ||
89 | subs->stream = as; | |
90 | subs->direction = stream; | |
91 | subs->dev = as->chip->dev; | |
af158a7f | 92 | subs->txfr_quirk = !!(as->chip->quirk_flags & QUIRK_FLAG_ALIGN_TRANSFER); |
c1b034a4 | 93 | subs->tx_length_quirk = !!(as->chip->quirk_flags & QUIRK_FLAG_TX_LENGTH); |
978520b7 | 94 | subs->speed = snd_usb_get_speed(subs->dev); |
1539d4f8 | 95 | subs->pkt_offset_adj = 0; |
1b7ecc24 | 96 | subs->stream_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; | |
f274baa4 | 107 | |
a0a4959e | 108 | if (pd) { |
7edf3b5e | 109 | subs->str_pd = pd; |
a0a4959e JS |
110 | /* Initialize Power Domain to idle status D1 */ |
111 | snd_usb_power_domain_set(subs->stream->chip, pd, | |
112 | UAC3_PD_STATE_D1); | |
113 | } | |
7edf3b5e | 114 | |
f274baa4 | 115 | snd_usb_preallocate_buffer(subs); |
04324ccc TI |
116 | } |
117 | ||
118 | /* kctl callbacks for usb-audio channel maps */ | |
119 | static int usb_chmap_ctl_info(struct snd_kcontrol *kcontrol, | |
120 | struct snd_ctl_elem_info *uinfo) | |
121 | { | |
122 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
123 | struct snd_usb_substream *subs = info->private_data; | |
124 | ||
125 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
126 | uinfo->count = subs->channels_max; | |
127 | uinfo->value.integer.min = 0; | |
128 | uinfo->value.integer.max = SNDRV_CHMAP_LAST; | |
129 | return 0; | |
130 | } | |
131 | ||
132 | /* check whether a duplicated entry exists in the audiofmt list */ | |
133 | static bool have_dup_chmap(struct snd_usb_substream *subs, | |
134 | struct audioformat *fp) | |
135 | { | |
f67d71ae | 136 | struct audioformat *prev = fp; |
04324ccc | 137 | |
f67d71ae | 138 | list_for_each_entry_continue_reverse(prev, &subs->fmt_list, list) { |
04324ccc TI |
139 | if (prev->chmap && |
140 | !memcmp(prev->chmap, fp->chmap, sizeof(*fp->chmap))) | |
141 | return true; | |
142 | } | |
143 | return false; | |
144 | } | |
145 | ||
146 | static int usb_chmap_ctl_tlv(struct snd_kcontrol *kcontrol, int op_flag, | |
147 | unsigned int size, unsigned int __user *tlv) | |
148 | { | |
149 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
150 | struct snd_usb_substream *subs = info->private_data; | |
151 | struct audioformat *fp; | |
152 | unsigned int __user *dst; | |
153 | int count = 0; | |
154 | ||
155 | if (size < 8) | |
156 | return -ENOMEM; | |
157 | if (put_user(SNDRV_CTL_TLVT_CONTAINER, tlv)) | |
158 | return -EFAULT; | |
159 | size -= 8; | |
160 | dst = tlv + 2; | |
161 | list_for_each_entry(fp, &subs->fmt_list, list) { | |
162 | int i, ch_bytes; | |
163 | ||
164 | if (!fp->chmap) | |
165 | continue; | |
166 | if (have_dup_chmap(subs, fp)) | |
167 | continue; | |
168 | /* copy the entry */ | |
169 | ch_bytes = fp->chmap->channels * 4; | |
170 | if (size < 8 + ch_bytes) | |
171 | return -ENOMEM; | |
172 | if (put_user(SNDRV_CTL_TLVT_CHMAP_FIXED, dst) || | |
173 | put_user(ch_bytes, dst + 1)) | |
174 | return -EFAULT; | |
175 | dst += 2; | |
176 | for (i = 0; i < fp->chmap->channels; i++, dst++) { | |
177 | if (put_user(fp->chmap->map[i], dst)) | |
178 | return -EFAULT; | |
179 | } | |
180 | ||
181 | count += 8 + ch_bytes; | |
182 | size -= 8 + ch_bytes; | |
183 | } | |
184 | if (put_user(count, tlv + 1)) | |
185 | return -EFAULT; | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static int usb_chmap_ctl_get(struct snd_kcontrol *kcontrol, | |
190 | struct snd_ctl_elem_value *ucontrol) | |
191 | { | |
192 | struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol); | |
193 | struct snd_usb_substream *subs = info->private_data; | |
194 | struct snd_pcm_chmap_elem *chmap = NULL; | |
c6dde8ff | 195 | int i = 0; |
04324ccc | 196 | |
04324ccc TI |
197 | if (subs->cur_audiofmt) |
198 | chmap = subs->cur_audiofmt->chmap; | |
199 | if (chmap) { | |
200 | for (i = 0; i < chmap->channels; i++) | |
201 | ucontrol->value.integer.value[i] = chmap->map[i]; | |
202 | } | |
c6dde8ff TI |
203 | for (; i < subs->channels_max; i++) |
204 | ucontrol->value.integer.value[i] = 0; | |
04324ccc TI |
205 | return 0; |
206 | } | |
207 | ||
208 | /* create a chmap kctl assigned to the given USB substream */ | |
209 | static int add_chmap(struct snd_pcm *pcm, int stream, | |
210 | struct snd_usb_substream *subs) | |
211 | { | |
212 | struct audioformat *fp; | |
213 | struct snd_pcm_chmap *chmap; | |
214 | struct snd_kcontrol *kctl; | |
215 | int err; | |
216 | ||
217 | list_for_each_entry(fp, &subs->fmt_list, list) | |
218 | if (fp->chmap) | |
219 | goto ok; | |
220 | /* no chmap is found */ | |
221 | return 0; | |
222 | ||
223 | ok: | |
224 | err = snd_pcm_add_chmap_ctls(pcm, stream, NULL, 0, 0, &chmap); | |
225 | if (err < 0) | |
226 | return err; | |
227 | ||
228 | /* override handlers */ | |
229 | chmap->private_data = subs; | |
230 | kctl = chmap->kctl; | |
231 | kctl->info = usb_chmap_ctl_info; | |
232 | kctl->get = usb_chmap_ctl_get; | |
233 | kctl->tlv.c = usb_chmap_ctl_tlv; | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | /* convert from USB ChannelConfig bits to ALSA chmap element */ | |
239 | static struct snd_pcm_chmap_elem *convert_chmap(int channels, unsigned int bits, | |
240 | int protocol) | |
241 | { | |
a01df925 | 242 | static const unsigned int uac1_maps[] = { |
04324ccc TI |
243 | SNDRV_CHMAP_FL, /* left front */ |
244 | SNDRV_CHMAP_FR, /* right front */ | |
245 | SNDRV_CHMAP_FC, /* center front */ | |
246 | SNDRV_CHMAP_LFE, /* LFE */ | |
b7b7e1ab TI |
247 | SNDRV_CHMAP_RL, /* left surround */ |
248 | SNDRV_CHMAP_RR, /* right surround */ | |
04324ccc TI |
249 | SNDRV_CHMAP_FLC, /* left of center */ |
250 | SNDRV_CHMAP_FRC, /* right of center */ | |
251 | SNDRV_CHMAP_RC, /* surround */ | |
252 | SNDRV_CHMAP_SL, /* side left */ | |
253 | SNDRV_CHMAP_SR, /* side right */ | |
254 | SNDRV_CHMAP_TC, /* top */ | |
255 | 0 /* terminator */ | |
256 | }; | |
a01df925 | 257 | static const unsigned int uac2_maps[] = { |
04324ccc TI |
258 | SNDRV_CHMAP_FL, /* front left */ |
259 | SNDRV_CHMAP_FR, /* front right */ | |
260 | SNDRV_CHMAP_FC, /* front center */ | |
261 | SNDRV_CHMAP_LFE, /* LFE */ | |
262 | SNDRV_CHMAP_RL, /* back left */ | |
263 | SNDRV_CHMAP_RR, /* back right */ | |
264 | SNDRV_CHMAP_FLC, /* front left of center */ | |
265 | SNDRV_CHMAP_FRC, /* front right of center */ | |
266 | SNDRV_CHMAP_RC, /* back center */ | |
267 | SNDRV_CHMAP_SL, /* side left */ | |
268 | SNDRV_CHMAP_SR, /* side right */ | |
269 | SNDRV_CHMAP_TC, /* top center */ | |
270 | SNDRV_CHMAP_TFL, /* top front left */ | |
271 | SNDRV_CHMAP_TFC, /* top front center */ | |
272 | SNDRV_CHMAP_TFR, /* top front right */ | |
273 | SNDRV_CHMAP_TRL, /* top back left */ | |
274 | SNDRV_CHMAP_TRC, /* top back center */ | |
275 | SNDRV_CHMAP_TRR, /* top back right */ | |
276 | SNDRV_CHMAP_TFLC, /* top front left of center */ | |
277 | SNDRV_CHMAP_TFRC, /* top front right of center */ | |
278 | SNDRV_CHMAP_LLFE, /* left LFE */ | |
279 | SNDRV_CHMAP_RLFE, /* right LFE */ | |
280 | SNDRV_CHMAP_TSL, /* top side left */ | |
281 | SNDRV_CHMAP_TSR, /* top side right */ | |
282 | SNDRV_CHMAP_BC, /* bottom center */ | |
71373fdd AH |
283 | SNDRV_CHMAP_RLC, /* back left of center */ |
284 | SNDRV_CHMAP_RRC, /* back right of center */ | |
04324ccc TI |
285 | 0 /* terminator */ |
286 | }; | |
287 | struct snd_pcm_chmap_elem *chmap; | |
288 | const unsigned int *maps; | |
289 | int c; | |
290 | ||
04324ccc TI |
291 | if (channels > ARRAY_SIZE(chmap->map)) |
292 | return NULL; | |
293 | ||
294 | chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); | |
295 | if (!chmap) | |
296 | return NULL; | |
297 | ||
298 | maps = protocol == UAC_VERSION_2 ? uac2_maps : uac1_maps; | |
299 | chmap->channels = channels; | |
300 | c = 0; | |
0dca01c3 DH |
301 | |
302 | if (bits) { | |
a39d51ff | 303 | for (; bits && *maps; maps++, bits >>= 1) { |
0dca01c3 DH |
304 | if (bits & 1) |
305 | chmap->map[c++] = *maps; | |
a39d51ff JC |
306 | if (c == chmap->channels) |
307 | break; | |
308 | } | |
0dca01c3 DH |
309 | } else { |
310 | /* If we're missing wChannelConfig, then guess something | |
311 | to make sure the channel map is not skipped entirely */ | |
312 | if (channels == 1) | |
313 | chmap->map[c++] = SNDRV_CHMAP_MONO; | |
314 | else | |
315 | for (; c < channels && *maps; maps++) | |
316 | chmap->map[c++] = *maps; | |
04324ccc TI |
317 | } |
318 | ||
319 | for (; c < channels; c++) | |
320 | chmap->map[c] = SNDRV_CHMAP_UNKNOWN; | |
321 | ||
322 | return chmap; | |
edcd3633 | 323 | } |
e8e8babf | 324 | |
9a2fe9b8 RB |
325 | /* UAC3 device stores channels information in Cluster Descriptors */ |
326 | static struct | |
327 | snd_pcm_chmap_elem *convert_chmap_v3(struct uac3_cluster_header_descriptor | |
328 | *cluster) | |
329 | { | |
330 | unsigned int channels = cluster->bNrChannels; | |
331 | struct snd_pcm_chmap_elem *chmap; | |
332 | void *p = cluster; | |
333 | int len, c; | |
334 | ||
335 | if (channels > ARRAY_SIZE(chmap->map)) | |
336 | return NULL; | |
337 | ||
338 | chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); | |
339 | if (!chmap) | |
340 | return NULL; | |
341 | ||
342 | len = le16_to_cpu(cluster->wLength); | |
343 | c = 0; | |
344 | p += sizeof(struct uac3_cluster_header_descriptor); | |
345 | ||
346 | while (((p - (void *)cluster) < len) && (c < channels)) { | |
347 | struct uac3_cluster_segment_descriptor *cs_desc = p; | |
348 | u16 cs_len; | |
349 | u8 cs_type; | |
350 | ||
351 | cs_len = le16_to_cpu(cs_desc->wLength); | |
352 | cs_type = cs_desc->bSegmentType; | |
353 | ||
354 | if (cs_type == UAC3_CHANNEL_INFORMATION) { | |
355 | struct uac3_cluster_information_segment_descriptor *is = p; | |
356 | unsigned char map; | |
357 | ||
358 | /* | |
359 | * TODO: this conversion is not complete, update it | |
360 | * after adding UAC3 values to asound.h | |
361 | */ | |
8e0428a7 | 362 | switch (is->bChRelationship) { |
9a2fe9b8 RB |
363 | case UAC3_CH_MONO: |
364 | map = SNDRV_CHMAP_MONO; | |
365 | break; | |
366 | case UAC3_CH_LEFT: | |
367 | case UAC3_CH_FRONT_LEFT: | |
368 | case UAC3_CH_HEADPHONE_LEFT: | |
369 | map = SNDRV_CHMAP_FL; | |
370 | break; | |
371 | case UAC3_CH_RIGHT: | |
372 | case UAC3_CH_FRONT_RIGHT: | |
373 | case UAC3_CH_HEADPHONE_RIGHT: | |
374 | map = SNDRV_CHMAP_FR; | |
375 | break; | |
376 | case UAC3_CH_FRONT_CENTER: | |
377 | map = SNDRV_CHMAP_FC; | |
378 | break; | |
379 | case UAC3_CH_FRONT_LEFT_OF_CENTER: | |
380 | map = SNDRV_CHMAP_FLC; | |
381 | break; | |
382 | case UAC3_CH_FRONT_RIGHT_OF_CENTER: | |
383 | map = SNDRV_CHMAP_FRC; | |
384 | break; | |
385 | case UAC3_CH_SIDE_LEFT: | |
386 | map = SNDRV_CHMAP_SL; | |
387 | break; | |
388 | case UAC3_CH_SIDE_RIGHT: | |
389 | map = SNDRV_CHMAP_SR; | |
390 | break; | |
391 | case UAC3_CH_BACK_LEFT: | |
392 | map = SNDRV_CHMAP_RL; | |
393 | break; | |
394 | case UAC3_CH_BACK_RIGHT: | |
395 | map = SNDRV_CHMAP_RR; | |
396 | break; | |
397 | case UAC3_CH_BACK_CENTER: | |
398 | map = SNDRV_CHMAP_RC; | |
399 | break; | |
400 | case UAC3_CH_BACK_LEFT_OF_CENTER: | |
401 | map = SNDRV_CHMAP_RLC; | |
402 | break; | |
403 | case UAC3_CH_BACK_RIGHT_OF_CENTER: | |
404 | map = SNDRV_CHMAP_RRC; | |
405 | break; | |
406 | case UAC3_CH_TOP_CENTER: | |
407 | map = SNDRV_CHMAP_TC; | |
408 | break; | |
409 | case UAC3_CH_TOP_FRONT_LEFT: | |
410 | map = SNDRV_CHMAP_TFL; | |
411 | break; | |
412 | case UAC3_CH_TOP_FRONT_RIGHT: | |
413 | map = SNDRV_CHMAP_TFR; | |
414 | break; | |
415 | case UAC3_CH_TOP_FRONT_CENTER: | |
416 | map = SNDRV_CHMAP_TFC; | |
417 | break; | |
418 | case UAC3_CH_TOP_FRONT_LOC: | |
419 | map = SNDRV_CHMAP_TFLC; | |
420 | break; | |
421 | case UAC3_CH_TOP_FRONT_ROC: | |
422 | map = SNDRV_CHMAP_TFRC; | |
423 | break; | |
424 | case UAC3_CH_TOP_SIDE_LEFT: | |
425 | map = SNDRV_CHMAP_TSL; | |
426 | break; | |
427 | case UAC3_CH_TOP_SIDE_RIGHT: | |
428 | map = SNDRV_CHMAP_TSR; | |
429 | break; | |
430 | case UAC3_CH_TOP_BACK_LEFT: | |
431 | map = SNDRV_CHMAP_TRL; | |
432 | break; | |
433 | case UAC3_CH_TOP_BACK_RIGHT: | |
434 | map = SNDRV_CHMAP_TRR; | |
435 | break; | |
436 | case UAC3_CH_TOP_BACK_CENTER: | |
437 | map = SNDRV_CHMAP_TRC; | |
438 | break; | |
439 | case UAC3_CH_BOTTOM_CENTER: | |
440 | map = SNDRV_CHMAP_BC; | |
441 | break; | |
442 | case UAC3_CH_LOW_FREQUENCY_EFFECTS: | |
443 | map = SNDRV_CHMAP_LFE; | |
444 | break; | |
445 | case UAC3_CH_LFE_LEFT: | |
446 | map = SNDRV_CHMAP_LLFE; | |
447 | break; | |
448 | case UAC3_CH_LFE_RIGHT: | |
449 | map = SNDRV_CHMAP_RLFE; | |
450 | break; | |
451 | case UAC3_CH_RELATIONSHIP_UNDEFINED: | |
452 | default: | |
453 | map = SNDRV_CHMAP_UNKNOWN; | |
454 | break; | |
455 | } | |
456 | chmap->map[c++] = map; | |
457 | } | |
458 | p += cs_len; | |
459 | } | |
460 | ||
461 | if (channels < c) | |
462 | pr_err("%s: channel number mismatch\n", __func__); | |
463 | ||
464 | chmap->channels = channels; | |
465 | ||
466 | for (; c < channels; c++) | |
467 | chmap->map[c] = SNDRV_CHMAP_UNKNOWN; | |
468 | ||
469 | return chmap; | |
470 | } | |
471 | ||
e8e8babf DM |
472 | /* |
473 | * add this endpoint to the chip instance. | |
474 | * if a stream with the same endpoint already exists, append to it. | |
836b34a9 VD |
475 | * if not, create a new pcm stream. note, fp is added to the substream |
476 | * fmt_list and will be freed on the chip instance release. do not free | |
477 | * fp or do remove it from the substream fmt_list to avoid double-free. | |
e8e8babf | 478 | */ |
7edf3b5e JS |
479 | static int __snd_usb_add_audio_stream(struct snd_usb_audio *chip, |
480 | int stream, | |
481 | struct audioformat *fp, | |
482 | struct snd_usb_power_domain *pd) | |
483 | ||
e8e8babf | 484 | { |
e8e8babf DM |
485 | struct snd_usb_stream *as; |
486 | struct snd_usb_substream *subs; | |
487 | struct snd_pcm *pcm; | |
488 | int err; | |
489 | ||
88766f04 | 490 | list_for_each_entry(as, &chip->pcm_list, list) { |
e8e8babf DM |
491 | if (as->fmt_type != fp->fmt_type) |
492 | continue; | |
493 | subs = &as->substream[stream]; | |
8260ef07 | 494 | if (subs->ep_num == fp->endpoint) { |
e8e8babf DM |
495 | list_add_tail(&fp->list, &subs->fmt_list); |
496 | subs->num_formats++; | |
497 | subs->formats |= fp->formats; | |
498 | return 0; | |
499 | } | |
500 | } | |
7e1afce5 TI |
501 | |
502 | if (chip->card->registered) | |
503 | chip->need_delayed_register = true; | |
504 | ||
e8e8babf | 505 | /* look for an empty stream */ |
88766f04 | 506 | list_for_each_entry(as, &chip->pcm_list, list) { |
e8e8babf DM |
507 | if (as->fmt_type != fp->fmt_type) |
508 | continue; | |
509 | subs = &as->substream[stream]; | |
8260ef07 | 510 | if (subs->ep_num) |
e8e8babf DM |
511 | continue; |
512 | err = snd_pcm_new_stream(as->pcm, stream, 1); | |
513 | if (err < 0) | |
514 | return err; | |
7edf3b5e | 515 | snd_usb_init_substream(as, stream, fp, pd); |
04324ccc | 516 | return add_chmap(as->pcm, stream, subs); |
e8e8babf DM |
517 | } |
518 | ||
519 | /* create a new pcm */ | |
520 | as = kzalloc(sizeof(*as), GFP_KERNEL); | |
521 | if (!as) | |
522 | return -ENOMEM; | |
523 | as->pcm_index = chip->pcm_devs; | |
524 | as->chip = chip; | |
525 | as->fmt_type = fp->fmt_type; | |
526 | err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs, | |
527 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0, | |
528 | stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1, | |
529 | &pcm); | |
530 | if (err < 0) { | |
531 | kfree(as); | |
532 | return err; | |
533 | } | |
534 | as->pcm = pcm; | |
535 | pcm->private_data = as; | |
536 | pcm->private_free = snd_usb_audio_pcm_free; | |
537 | pcm->info_flags = 0; | |
538 | if (chip->pcm_devs > 0) | |
539 | sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs); | |
540 | else | |
541 | strcpy(pcm->name, "USB Audio"); | |
542 | ||
7edf3b5e | 543 | snd_usb_init_substream(as, stream, fp, pd); |
e8e8babf | 544 | |
5ee20bc7 JR |
545 | /* |
546 | * Keep using head insertion for M-Audio Audiophile USB (tm) which has a | |
547 | * fix to swap capture stream order in conf/cards/USB-audio.conf | |
548 | */ | |
549 | if (chip->usb_id == USB_ID(0x0763, 0x2003)) | |
550 | list_add(&as->list, &chip->pcm_list); | |
551 | else | |
552 | list_add_tail(&as->list, &chip->pcm_list); | |
553 | ||
e8e8babf DM |
554 | chip->pcm_devs++; |
555 | ||
556 | snd_usb_proc_pcm_format_add(as); | |
557 | ||
04324ccc | 558 | return add_chmap(pcm, stream, &as->substream[stream]); |
e8e8babf DM |
559 | } |
560 | ||
7edf3b5e JS |
561 | int snd_usb_add_audio_stream(struct snd_usb_audio *chip, |
562 | int stream, | |
563 | struct audioformat *fp) | |
564 | { | |
565 | return __snd_usb_add_audio_stream(chip, stream, fp, NULL); | |
566 | } | |
567 | ||
568 | static int snd_usb_add_audio_stream_v3(struct snd_usb_audio *chip, | |
569 | int stream, | |
570 | struct audioformat *fp, | |
571 | struct snd_usb_power_domain *pd) | |
572 | { | |
573 | return __snd_usb_add_audio_stream(chip, stream, fp, pd); | |
574 | } | |
575 | ||
e8e8babf DM |
576 | static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip, |
577 | struct usb_host_interface *alts, | |
578 | int protocol, int iface_no) | |
579 | { | |
580 | /* parsed with a v1 header here. that's ok as we only look at the | |
581 | * header first which is the same for both versions */ | |
582 | struct uac_iso_endpoint_descriptor *csep; | |
583 | struct usb_interface_descriptor *altsd = get_iface_desc(alts); | |
584 | int attributes = 0; | |
585 | ||
586 | csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT); | |
587 | ||
588 | /* Creamware Noah has this descriptor after the 2nd endpoint */ | |
589 | if (!csep && altsd->bNumEndpoints >= 2) | |
590 | csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); | |
591 | ||
ebfc594c DM |
592 | /* |
593 | * If we can't locate the USB_DT_CS_ENDPOINT descriptor in the extra | |
594 | * bytes after the first endpoint, go search the entire interface. | |
595 | * Some devices have it directly *before* the standard endpoint. | |
596 | */ | |
597 | if (!csep) | |
598 | csep = snd_usb_find_desc(alts->extra, alts->extralen, NULL, USB_DT_CS_ENDPOINT); | |
599 | ||
e8e8babf | 600 | if (!csep || csep->bLength < 7 || |
3e96d728 TI |
601 | csep->bDescriptorSubtype != UAC_EP_GENERAL) |
602 | goto error; | |
e8e8babf DM |
603 | |
604 | if (protocol == UAC_VERSION_1) { | |
605 | attributes = csep->bmAttributes; | |
c99f0802 | 606 | } else if (protocol == UAC_VERSION_2) { |
e8e8babf DM |
607 | struct uac2_iso_endpoint_descriptor *csep2 = |
608 | (struct uac2_iso_endpoint_descriptor *) csep; | |
609 | ||
3e96d728 TI |
610 | if (csep2->bLength < sizeof(*csep2)) |
611 | goto error; | |
e8e8babf DM |
612 | attributes = csep->bmAttributes & UAC_EP_CS_ATTR_FILL_MAX; |
613 | ||
614 | /* emulate the endpoint attributes of a v1 device */ | |
615 | if (csep2->bmControls & UAC2_CONTROL_PITCH) | |
616 | attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL; | |
c99f0802 JS |
617 | } else { /* UAC_VERSION_3 */ |
618 | struct uac3_iso_endpoint_descriptor *csep3 = | |
619 | (struct uac3_iso_endpoint_descriptor *) csep; | |
620 | ||
3e96d728 TI |
621 | if (csep3->bLength < sizeof(*csep3)) |
622 | goto error; | |
c99f0802 JS |
623 | /* emulate the endpoint attributes of a v1 device */ |
624 | if (le32_to_cpu(csep3->bmControls) & UAC2_CONTROL_PITCH) | |
625 | attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL; | |
e8e8babf DM |
626 | } |
627 | ||
628 | return attributes; | |
3e96d728 TI |
629 | |
630 | error: | |
631 | usb_audio_warn(chip, | |
632 | "%u:%d : no or invalid class specific endpoint descriptor\n", | |
633 | iface_no, altsd->bAlternateSetting); | |
634 | return 0; | |
e8e8babf DM |
635 | } |
636 | ||
04324ccc TI |
637 | /* find an input terminal descriptor (either UAC1 or UAC2) with the given |
638 | * terminal id | |
639 | */ | |
640 | static void * | |
641 | snd_usb_find_input_terminal_descriptor(struct usb_host_interface *ctrl_iface, | |
57f87706 | 642 | int terminal_id, int protocol) |
e8e8babf DM |
643 | { |
644 | struct uac2_input_terminal_descriptor *term = NULL; | |
645 | ||
646 | while ((term = snd_usb_find_csint_desc(ctrl_iface->extra, | |
647 | ctrl_iface->extralen, | |
648 | term, UAC_INPUT_TERMINAL))) { | |
57f87706 | 649 | if (!snd_usb_validate_audio_desc(term, protocol)) |
3e96d728 | 650 | continue; |
e8e8babf DM |
651 | if (term->bTerminalID == terminal_id) |
652 | return term; | |
653 | } | |
654 | ||
655 | return NULL; | |
656 | } | |
657 | ||
9a2fe9b8 RB |
658 | static void * |
659 | snd_usb_find_output_terminal_descriptor(struct usb_host_interface *ctrl_iface, | |
57f87706 | 660 | int terminal_id, int protocol) |
e8e8babf | 661 | { |
9a2fe9b8 | 662 | /* OK to use with both UAC2 and UAC3 */ |
e8e8babf DM |
663 | struct uac2_output_terminal_descriptor *term = NULL; |
664 | ||
665 | while ((term = snd_usb_find_csint_desc(ctrl_iface->extra, | |
666 | ctrl_iface->extralen, | |
667 | term, UAC_OUTPUT_TERMINAL))) { | |
57f87706 TI |
668 | if (!snd_usb_validate_audio_desc(term, protocol)) |
669 | continue; | |
670 | if (term->bTerminalID == terminal_id) | |
e8e8babf DM |
671 | return term; |
672 | } | |
673 | ||
674 | return NULL; | |
675 | } | |
676 | ||
4d47fa84 RB |
677 | static struct audioformat * |
678 | audio_format_alloc_init(struct snd_usb_audio *chip, | |
679 | struct usb_host_interface *alts, | |
680 | int protocol, int iface_no, int altset_idx, | |
681 | int altno, int num_channels, int clock) | |
682 | { | |
683 | struct audioformat *fp; | |
684 | ||
685 | fp = kzalloc(sizeof(*fp), GFP_KERNEL); | |
686 | if (!fp) | |
687 | return NULL; | |
688 | ||
689 | fp->iface = iface_no; | |
690 | fp->altsetting = altno; | |
691 | fp->altset_idx = altset_idx; | |
692 | fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; | |
693 | fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; | |
694 | fp->datainterval = snd_usb_parse_datainterval(chip, alts); | |
695 | fp->protocol = protocol; | |
696 | fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); | |
697 | fp->channels = num_channels; | |
698 | if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH) | |
699 | fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) | |
700 | * (fp->maxpacksize & 0x7ff); | |
701 | fp->clock = clock; | |
702 | INIT_LIST_HEAD(&fp->list); | |
703 | ||
704 | return fp; | |
705 | } | |
706 | ||
68faa863 RB |
707 | static struct audioformat * |
708 | snd_usb_get_audioformat_uac12(struct snd_usb_audio *chip, | |
709 | struct usb_host_interface *alts, | |
710 | int protocol, int iface_no, int altset_idx, | |
711 | int altno, int stream, int bm_quirk) | |
712 | { | |
713 | struct usb_device *dev = chip->dev; | |
714 | struct uac_format_type_i_continuous_descriptor *fmt; | |
715 | unsigned int num_channels = 0, chconfig = 0; | |
6aa87001 | 716 | struct usb_host_interface *ctrl_intf; |
68faa863 RB |
717 | struct audioformat *fp; |
718 | int clock = 0; | |
719 | u64 format; | |
720 | ||
6aa87001 KK |
721 | ctrl_intf = snd_usb_find_ctrl_interface(chip, iface_no); |
722 | ||
68faa863 RB |
723 | /* get audio formats */ |
724 | if (protocol == UAC_VERSION_1) { | |
725 | struct uac1_as_header_descriptor *as = | |
726 | snd_usb_find_csint_desc(alts->extra, alts->extralen, | |
727 | NULL, UAC_AS_GENERAL); | |
728 | struct uac_input_terminal_descriptor *iterm; | |
729 | ||
730 | if (!as) { | |
731 | dev_err(&dev->dev, | |
732 | "%u:%d : UAC_AS_GENERAL descriptor not found\n", | |
733 | iface_no, altno); | |
734 | return NULL; | |
735 | } | |
736 | ||
737 | if (as->bLength < sizeof(*as)) { | |
738 | dev_err(&dev->dev, | |
739 | "%u:%d : invalid UAC_AS_GENERAL desc\n", | |
740 | iface_no, altno); | |
741 | return NULL; | |
742 | } | |
743 | ||
744 | format = le16_to_cpu(as->wFormatTag); /* remember the format value */ | |
745 | ||
6aa87001 | 746 | iterm = snd_usb_find_input_terminal_descriptor(ctrl_intf, |
3e96d728 | 747 | as->bTerminalLink, |
57f87706 | 748 | protocol); |
68faa863 RB |
749 | if (iterm) { |
750 | num_channels = iterm->bNrChannels; | |
751 | chconfig = le16_to_cpu(iterm->wChannelConfig); | |
752 | } | |
753 | } else { /* UAC_VERSION_2 */ | |
754 | struct uac2_input_terminal_descriptor *input_term; | |
755 | struct uac2_output_terminal_descriptor *output_term; | |
756 | struct uac2_as_header_descriptor *as = | |
757 | snd_usb_find_csint_desc(alts->extra, alts->extralen, | |
758 | NULL, UAC_AS_GENERAL); | |
759 | ||
760 | if (!as) { | |
761 | dev_err(&dev->dev, | |
762 | "%u:%d : UAC_AS_GENERAL descriptor not found\n", | |
763 | iface_no, altno); | |
764 | return NULL; | |
765 | } | |
766 | ||
767 | if (as->bLength < sizeof(*as)) { | |
768 | dev_err(&dev->dev, | |
769 | "%u:%d : invalid UAC_AS_GENERAL desc\n", | |
770 | iface_no, altno); | |
771 | return NULL; | |
772 | } | |
773 | ||
774 | num_channels = as->bNrChannels; | |
775 | format = le32_to_cpu(as->bmFormats); | |
776 | chconfig = le32_to_cpu(as->bmChannelConfig); | |
777 | ||
778 | /* | |
779 | * lookup the terminal associated to this interface | |
780 | * to extract the clock | |
781 | */ | |
6aa87001 | 782 | input_term = snd_usb_find_input_terminal_descriptor(ctrl_intf, |
3e96d728 | 783 | as->bTerminalLink, |
57f87706 | 784 | protocol); |
68faa863 RB |
785 | if (input_term) { |
786 | clock = input_term->bCSourceID; | |
787 | if (!chconfig && (num_channels == input_term->bNrChannels)) | |
788 | chconfig = le32_to_cpu(input_term->bmChannelConfig); | |
789 | goto found_clock; | |
790 | } | |
791 | ||
6aa87001 | 792 | output_term = snd_usb_find_output_terminal_descriptor(ctrl_intf, |
57f87706 TI |
793 | as->bTerminalLink, |
794 | protocol); | |
68faa863 RB |
795 | if (output_term) { |
796 | clock = output_term->bCSourceID; | |
797 | goto found_clock; | |
798 | } | |
799 | ||
800 | dev_err(&dev->dev, | |
801 | "%u:%d : bogus bTerminalLink %d\n", | |
802 | iface_no, altno, as->bTerminalLink); | |
803 | return NULL; | |
804 | } | |
805 | ||
806 | found_clock: | |
807 | /* get format type */ | |
808 | fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, | |
809 | NULL, UAC_FORMAT_TYPE); | |
810 | if (!fmt) { | |
811 | dev_err(&dev->dev, | |
812 | "%u:%d : no UAC_FORMAT_TYPE desc\n", | |
813 | iface_no, altno); | |
814 | return NULL; | |
815 | } | |
816 | if (((protocol == UAC_VERSION_1) && (fmt->bLength < 8)) | |
817 | || ((protocol == UAC_VERSION_2) && | |
818 | (fmt->bLength < 6))) { | |
819 | dev_err(&dev->dev, | |
820 | "%u:%d : invalid UAC_FORMAT_TYPE desc\n", | |
821 | iface_no, altno); | |
822 | return NULL; | |
823 | } | |
824 | ||
825 | /* | |
826 | * Blue Microphones workaround: The last altsetting is | |
827 | * identical with the previous one, except for a larger | |
828 | * packet size, but is actually a mislabeled two-channel | |
829 | * setting; ignore it. | |
830 | * | |
831 | * Part 2: analyze quirk flag and format | |
832 | */ | |
833 | if (bm_quirk && fmt->bNrChannels == 1 && fmt->bSubframeSize == 2) | |
834 | return NULL; | |
835 | ||
836 | fp = audio_format_alloc_init(chip, alts, protocol, iface_no, | |
837 | altset_idx, altno, num_channels, clock); | |
838 | if (!fp) | |
839 | return ERR_PTR(-ENOMEM); | |
840 | ||
841 | fp->attributes = parse_uac_endpoint_attributes(chip, alts, protocol, | |
842 | iface_no); | |
843 | ||
844 | /* some quirks for attributes here */ | |
845 | snd_usb_audioformat_attributes_quirk(chip, fp, stream); | |
846 | ||
847 | /* ok, let's parse further... */ | |
848 | if (snd_usb_parse_audio_format(chip, fp, format, | |
849 | fmt, stream) < 0) { | |
c1ae5e7f | 850 | audioformat_free(fp); |
68faa863 RB |
851 | return NULL; |
852 | } | |
853 | ||
854 | /* Create chmap */ | |
855 | if (fp->channels != num_channels) | |
856 | chconfig = 0; | |
857 | ||
858 | fp->chmap = convert_chmap(fp->channels, chconfig, protocol); | |
859 | ||
860 | return fp; | |
861 | } | |
4d47fa84 | 862 | |
eda553f4 RB |
863 | static struct audioformat * |
864 | snd_usb_get_audioformat_uac3(struct snd_usb_audio *chip, | |
865 | struct usb_host_interface *alts, | |
7edf3b5e | 866 | struct snd_usb_power_domain **pd_out, |
eda553f4 RB |
867 | int iface_no, int altset_idx, |
868 | int altno, int stream) | |
869 | { | |
870 | struct usb_device *dev = chip->dev; | |
871 | struct uac3_input_terminal_descriptor *input_term; | |
872 | struct uac3_output_terminal_descriptor *output_term; | |
873 | struct uac3_cluster_header_descriptor *cluster; | |
17156f23 | 874 | struct uac3_as_header_descriptor *as = NULL; |
eda553f4 | 875 | struct uac3_hc_descriptor_header hc_header; |
6aa87001 | 876 | struct usb_host_interface *ctrl_intf; |
eda553f4 | 877 | struct snd_pcm_chmap_elem *chmap; |
7edf3b5e | 878 | struct snd_usb_power_domain *pd; |
17156f23 RB |
879 | unsigned char badd_profile; |
880 | u64 badd_formats = 0; | |
eda553f4 RB |
881 | unsigned int num_channels; |
882 | struct audioformat *fp; | |
883 | u16 cluster_id, wLength; | |
884 | int clock = 0; | |
885 | int err; | |
886 | ||
17156f23 | 887 | badd_profile = chip->badd_profile; |
6aa87001 | 888 | ctrl_intf = snd_usb_find_ctrl_interface(chip, iface_no); |
17156f23 RB |
889 | |
890 | if (badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) { | |
891 | unsigned int maxpacksize = | |
892 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); | |
893 | ||
894 | switch (maxpacksize) { | |
895 | default: | |
896 | dev_err(&dev->dev, | |
897 | "%u:%d : incorrect wMaxPacketSize for BADD profile\n", | |
898 | iface_no, altno); | |
899 | return NULL; | |
900 | case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_16: | |
901 | case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_16: | |
902 | badd_formats = SNDRV_PCM_FMTBIT_S16_LE; | |
903 | num_channels = 1; | |
904 | break; | |
905 | case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_24: | |
906 | case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_24: | |
907 | badd_formats = SNDRV_PCM_FMTBIT_S24_3LE; | |
908 | num_channels = 1; | |
909 | break; | |
910 | case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_16: | |
911 | case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_16: | |
912 | badd_formats = SNDRV_PCM_FMTBIT_S16_LE; | |
913 | num_channels = 2; | |
914 | break; | |
915 | case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_24: | |
916 | case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_24: | |
917 | badd_formats = SNDRV_PCM_FMTBIT_S24_3LE; | |
918 | num_channels = 2; | |
919 | break; | |
920 | } | |
921 | ||
922 | chmap = kzalloc(sizeof(*chmap), GFP_KERNEL); | |
923 | if (!chmap) | |
924 | return ERR_PTR(-ENOMEM); | |
925 | ||
926 | if (num_channels == 1) { | |
927 | chmap->map[0] = SNDRV_CHMAP_MONO; | |
928 | } else { | |
929 | chmap->map[0] = SNDRV_CHMAP_FL; | |
930 | chmap->map[1] = SNDRV_CHMAP_FR; | |
931 | } | |
932 | ||
933 | chmap->channels = num_channels; | |
934 | clock = UAC3_BADD_CS_ID9; | |
935 | goto found_clock; | |
936 | } | |
937 | ||
eda553f4 RB |
938 | as = snd_usb_find_csint_desc(alts->extra, alts->extralen, |
939 | NULL, UAC_AS_GENERAL); | |
940 | if (!as) { | |
941 | dev_err(&dev->dev, | |
942 | "%u:%d : UAC_AS_GENERAL descriptor not found\n", | |
943 | iface_no, altno); | |
944 | return NULL; | |
945 | } | |
946 | ||
947 | if (as->bLength < sizeof(*as)) { | |
948 | dev_err(&dev->dev, | |
949 | "%u:%d : invalid UAC_AS_GENERAL desc\n", | |
950 | iface_no, altno); | |
951 | return NULL; | |
952 | } | |
953 | ||
954 | cluster_id = le16_to_cpu(as->wClusterDescrID); | |
955 | if (!cluster_id) { | |
956 | dev_err(&dev->dev, | |
957 | "%u:%d : no cluster descriptor\n", | |
958 | iface_no, altno); | |
959 | return NULL; | |
960 | } | |
961 | ||
962 | /* | |
963 | * Get number of channels and channel map through | |
964 | * High Capability Cluster Descriptor | |
965 | * | |
966 | * First step: get High Capability header and | |
967 | * read size of Cluster Descriptor | |
968 | */ | |
969 | err = snd_usb_ctl_msg(chip->dev, | |
970 | usb_rcvctrlpipe(chip->dev, 0), | |
971 | UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR, | |
972 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, | |
973 | cluster_id, | |
6aa87001 | 974 | snd_usb_ctrl_intf(ctrl_intf), |
eda553f4 RB |
975 | &hc_header, sizeof(hc_header)); |
976 | if (err < 0) | |
977 | return ERR_PTR(err); | |
978 | else if (err != sizeof(hc_header)) { | |
979 | dev_err(&dev->dev, | |
980 | "%u:%d : can't get High Capability descriptor\n", | |
981 | iface_no, altno); | |
982 | return ERR_PTR(-EIO); | |
983 | } | |
984 | ||
985 | /* | |
986 | * Second step: allocate needed amount of memory | |
987 | * and request Cluster Descriptor | |
988 | */ | |
989 | wLength = le16_to_cpu(hc_header.wLength); | |
990 | cluster = kzalloc(wLength, GFP_KERNEL); | |
991 | if (!cluster) | |
992 | return ERR_PTR(-ENOMEM); | |
993 | err = snd_usb_ctl_msg(chip->dev, | |
994 | usb_rcvctrlpipe(chip->dev, 0), | |
995 | UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR, | |
996 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, | |
997 | cluster_id, | |
6aa87001 | 998 | snd_usb_ctrl_intf(ctrl_intf), |
eda553f4 RB |
999 | cluster, wLength); |
1000 | if (err < 0) { | |
1001 | kfree(cluster); | |
1002 | return ERR_PTR(err); | |
1003 | } else if (err != wLength) { | |
1004 | dev_err(&dev->dev, | |
1005 | "%u:%d : can't get Cluster Descriptor\n", | |
1006 | iface_no, altno); | |
1007 | kfree(cluster); | |
1008 | return ERR_PTR(-EIO); | |
1009 | } | |
1010 | ||
1011 | num_channels = cluster->bNrChannels; | |
1012 | chmap = convert_chmap_v3(cluster); | |
1013 | kfree(cluster); | |
1014 | ||
1015 | /* | |
1016 | * lookup the terminal associated to this interface | |
1017 | * to extract the clock | |
1018 | */ | |
6aa87001 | 1019 | input_term = snd_usb_find_input_terminal_descriptor(ctrl_intf, |
3e96d728 | 1020 | as->bTerminalLink, |
57f87706 | 1021 | UAC_VERSION_3); |
eda553f4 RB |
1022 | if (input_term) { |
1023 | clock = input_term->bCSourceID; | |
1024 | goto found_clock; | |
1025 | } | |
1026 | ||
6aa87001 | 1027 | output_term = snd_usb_find_output_terminal_descriptor(ctrl_intf, |
57f87706 TI |
1028 | as->bTerminalLink, |
1029 | UAC_VERSION_3); | |
eda553f4 RB |
1030 | if (output_term) { |
1031 | clock = output_term->bCSourceID; | |
1032 | goto found_clock; | |
1033 | } | |
1034 | ||
1035 | dev_err(&dev->dev, "%u:%d : bogus bTerminalLink %d\n", | |
1036 | iface_no, altno, as->bTerminalLink); | |
6cd17ea7 | 1037 | kfree(chmap); |
eda553f4 RB |
1038 | return NULL; |
1039 | ||
1040 | found_clock: | |
1041 | fp = audio_format_alloc_init(chip, alts, UAC_VERSION_3, iface_no, | |
1042 | altset_idx, altno, num_channels, clock); | |
6cd17ea7 RB |
1043 | if (!fp) { |
1044 | kfree(chmap); | |
eda553f4 | 1045 | return ERR_PTR(-ENOMEM); |
6cd17ea7 | 1046 | } |
eda553f4 | 1047 | |
eda553f4 RB |
1048 | fp->chmap = chmap; |
1049 | ||
17156f23 RB |
1050 | if (badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) { |
1051 | fp->attributes = 0; /* No attributes */ | |
1052 | ||
1053 | fp->fmt_type = UAC_FORMAT_TYPE_I; | |
1054 | fp->formats = badd_formats; | |
1055 | ||
1056 | fp->nr_rates = 0; /* SNDRV_PCM_RATE_CONTINUOUS */ | |
1057 | fp->rate_min = UAC3_BADD_SAMPLING_RATE; | |
1058 | fp->rate_max = UAC3_BADD_SAMPLING_RATE; | |
1059 | fp->rates = SNDRV_PCM_RATE_CONTINUOUS; | |
1060 | ||
11175556 | 1061 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); |
7edf3b5e | 1062 | if (!pd) { |
c1ae5e7f | 1063 | audioformat_free(fp); |
7edf3b5e JS |
1064 | return NULL; |
1065 | } | |
1066 | pd->pd_id = (stream == SNDRV_PCM_STREAM_PLAYBACK) ? | |
1067 | UAC3_BADD_PD_ID10 : UAC3_BADD_PD_ID11; | |
1068 | pd->pd_d1d0_rec = UAC3_BADD_PD_RECOVER_D1D0; | |
1069 | pd->pd_d2d0_rec = UAC3_BADD_PD_RECOVER_D2D0; | |
1070 | ||
17156f23 RB |
1071 | } else { |
1072 | fp->attributes = parse_uac_endpoint_attributes(chip, alts, | |
1073 | UAC_VERSION_3, | |
1074 | iface_no); | |
7edf3b5e | 1075 | |
6aa87001 | 1076 | pd = snd_usb_find_power_domain(ctrl_intf, |
7edf3b5e JS |
1077 | as->bTerminalLink); |
1078 | ||
17156f23 RB |
1079 | /* ok, let's parse further... */ |
1080 | if (snd_usb_parse_audio_format_v3(chip, fp, as, stream) < 0) { | |
7edf3b5e | 1081 | kfree(pd); |
c1ae5e7f | 1082 | audioformat_free(fp); |
17156f23 RB |
1083 | return NULL; |
1084 | } | |
eda553f4 RB |
1085 | } |
1086 | ||
7edf3b5e JS |
1087 | if (pd) |
1088 | *pd_out = pd; | |
1089 | ||
eda553f4 RB |
1090 | return fp; |
1091 | } | |
1092 | ||
f7f53018 AT |
1093 | static int __snd_usb_parse_audio_interface(struct snd_usb_audio *chip, |
1094 | int iface_no, | |
1095 | bool *has_non_pcm, bool non_pcm) | |
e8e8babf DM |
1096 | { |
1097 | struct usb_device *dev; | |
1098 | struct usb_interface *iface; | |
1099 | struct usb_host_interface *alts; | |
1100 | struct usb_interface_descriptor *altsd; | |
1101 | int i, altno, err, stream; | |
e8e8babf | 1102 | struct audioformat *fp = NULL; |
7edf3b5e | 1103 | struct snd_usb_power_domain *pd = NULL; |
5fadc941 | 1104 | bool set_iface_first; |
eda553f4 | 1105 | int num, protocol; |
e8e8babf DM |
1106 | |
1107 | dev = chip->dev; | |
1108 | ||
1109 | /* parse the interface's altsettings */ | |
1110 | iface = usb_ifnum_to_if(dev, iface_no); | |
1111 | ||
1112 | num = iface->num_altsetting; | |
1113 | ||
1114 | /* | |
1115 | * Dallas DS4201 workaround: It presents 5 altsettings, but the last | |
1116 | * one misses syncpipe, and does not produce any sound. | |
1117 | */ | |
e53f47f6 | 1118 | if (chip->usb_id == USB_ID(0x04fa, 0x4201) && num >= 4) |
e8e8babf DM |
1119 | num = 4; |
1120 | ||
1121 | for (i = 0; i < num; i++) { | |
1122 | alts = &iface->altsetting[i]; | |
1123 | altsd = get_iface_desc(alts); | |
1124 | protocol = altsd->bInterfaceProtocol; | |
1125 | /* skip invalid one */ | |
aafe77cc CL |
1126 | if (((altsd->bInterfaceClass != USB_CLASS_AUDIO || |
1127 | (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING && | |
1128 | altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC)) && | |
e8e8babf | 1129 | altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || |
e8e8babf DM |
1130 | altsd->bNumEndpoints < 1 || |
1131 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0) | |
1132 | continue; | |
1133 | /* must be isochronous */ | |
1134 | if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != | |
1135 | USB_ENDPOINT_XFER_ISOC) | |
1136 | continue; | |
1137 | /* check direction */ | |
1138 | stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ? | |
1139 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; | |
1140 | altno = altsd->bAlternateSetting; | |
1141 | ||
1142 | if (snd_usb_apply_interface_quirk(chip, iface_no, altno)) | |
1143 | continue; | |
1144 | ||
aafe77cc CL |
1145 | /* |
1146 | * Roland audio streaming interfaces are marked with protocols | |
1147 | * 0/1/2, but are UAC 1 compatible. | |
1148 | */ | |
1149 | if (USB_ID_VENDOR(chip->usb_id) == 0x0582 && | |
1150 | altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && | |
1151 | protocol <= 2) | |
1152 | protocol = UAC_VERSION_1; | |
1153 | ||
e8e8babf DM |
1154 | switch (protocol) { |
1155 | default: | |
0ba41d91 TI |
1156 | dev_dbg(&dev->dev, "%u:%d: unknown interface protocol %#02x, assuming v1\n", |
1157 | iface_no, altno, protocol); | |
e8e8babf | 1158 | protocol = UAC_VERSION_1; |
c0dbbdad | 1159 | fallthrough; |
68faa863 | 1160 | case UAC_VERSION_1: |
e8e8babf | 1161 | case UAC_VERSION_2: { |
68faa863 | 1162 | int bm_quirk = 0; |
e8e8babf | 1163 | |
68faa863 RB |
1164 | /* |
1165 | * Blue Microphones workaround: The last altsetting is | |
1166 | * identical with the previous one, except for a larger | |
1167 | * packet size, but is actually a mislabeled two-channel | |
1168 | * setting; ignore it. | |
1169 | * | |
1170 | * Part 1: prepare quirk flag | |
1171 | */ | |
1172 | if (altno == 2 && num == 3 && | |
1173 | fp && fp->altsetting == 1 && fp->channels == 1 && | |
1174 | fp->formats == SNDRV_PCM_FMTBIT_S16_LE && | |
1175 | protocol == UAC_VERSION_1 && | |
1176 | le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == | |
1177 | fp->maxpacksize * 2) | |
1178 | bm_quirk = 1; | |
e8e8babf | 1179 | |
68faa863 RB |
1180 | fp = snd_usb_get_audioformat_uac12(chip, alts, protocol, |
1181 | iface_no, i, altno, | |
1182 | stream, bm_quirk); | |
1183 | break; | |
e8e8babf | 1184 | } |
eda553f4 | 1185 | case UAC_VERSION_3: |
7edf3b5e | 1186 | fp = snd_usb_get_audioformat_uac3(chip, alts, &pd, |
eda553f4 RB |
1187 | iface_no, i, altno, stream); |
1188 | break; | |
9a2fe9b8 | 1189 | } |
e8e8babf | 1190 | |
9ecb2406 | 1191 | if (!fp) |
68faa863 | 1192 | continue; |
eda553f4 RB |
1193 | else if (IS_ERR(fp)) |
1194 | return PTR_ERR(fp); | |
e8e8babf | 1195 | |
f7f53018 AT |
1196 | if (fp->fmt_type != UAC_FORMAT_TYPE_I) |
1197 | *has_non_pcm = true; | |
1198 | if ((fp->fmt_type == UAC_FORMAT_TYPE_I) == non_pcm) { | |
1199 | audioformat_free(fp); | |
1200 | kfree(pd); | |
1201 | fp = NULL; | |
1202 | pd = NULL; | |
1203 | continue; | |
1204 | } | |
1205 | ||
f6581c0e TI |
1206 | snd_usb_audioformat_set_sync_ep(chip, fp); |
1207 | ||
0ba41d91 | 1208 | dev_dbg(&dev->dev, "%u:%d: add audio endpoint %#x\n", iface_no, altno, fp->endpoint); |
7edf3b5e JS |
1209 | if (protocol == UAC_VERSION_3) |
1210 | err = snd_usb_add_audio_stream_v3(chip, stream, fp, pd); | |
1211 | else | |
1212 | err = snd_usb_add_audio_stream(chip, stream, fp); | |
1213 | ||
e8e8babf | 1214 | if (err < 0) { |
c1ae5e7f | 1215 | audioformat_free(fp); |
7edf3b5e | 1216 | kfree(pd); |
e8e8babf DM |
1217 | return err; |
1218 | } | |
54cb3190 TI |
1219 | |
1220 | /* add endpoints */ | |
1221 | err = snd_usb_add_endpoint(chip, fp->endpoint, | |
1222 | SND_USB_ENDPOINT_TYPE_DATA); | |
1223 | if (err < 0) | |
1224 | return err; | |
1225 | ||
1226 | if (fp->sync_ep) { | |
1227 | err = snd_usb_add_endpoint(chip, fp->sync_ep, | |
1228 | fp->implicit_fb ? | |
1229 | SND_USB_ENDPOINT_TYPE_DATA : | |
1230 | SND_USB_ENDPOINT_TYPE_SYNC); | |
1231 | if (err < 0) | |
1232 | return err; | |
1233 | } | |
16f1f838 | 1234 | |
5fadc941 TI |
1235 | set_iface_first = false; |
1236 | if (protocol == UAC_VERSION_1 || | |
1237 | (chip->quirk_flags & QUIRK_FLAG_SET_IFACE_FIRST)) | |
1238 | set_iface_first = true; | |
1239 | ||
16f1f838 TI |
1240 | /* try to set the interface... */ |
1241 | usb_set_interface(chip->dev, iface_no, 0); | |
5fadc941 TI |
1242 | if (set_iface_first) |
1243 | usb_set_interface(chip->dev, iface_no, altno); | |
16f1f838 TI |
1244 | snd_usb_init_pitch(chip, fp); |
1245 | snd_usb_init_sample_rate(chip, fp, fp->rate_max); | |
5fadc941 TI |
1246 | if (!set_iface_first) |
1247 | usb_set_interface(chip->dev, iface_no, altno); | |
e8e8babf DM |
1248 | } |
1249 | return 0; | |
1250 | } | |
1251 | ||
f7f53018 AT |
1252 | int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) |
1253 | { | |
1254 | int err; | |
1255 | bool has_non_pcm = false; | |
1256 | ||
1257 | /* parse PCM formats */ | |
1258 | err = __snd_usb_parse_audio_interface(chip, iface_no, &has_non_pcm, false); | |
1259 | if (err < 0) | |
1260 | return err; | |
1261 | ||
1262 | if (has_non_pcm) { | |
1263 | /* parse non-PCM formats */ | |
1264 | err = __snd_usb_parse_audio_interface(chip, iface_no, &has_non_pcm, true); | |
1265 | if (err < 0) | |
1266 | return err; | |
1267 | } | |
1268 | ||
1269 | return 0; | |
1270 | } | |
1271 |