1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * (Tentative) USB Audio Driver for ALSA |
4 | * |
5 | * Mixer control part |
6 | * |
7 | * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> |
8 | * |
9 | * Many codes borrowed from audio.c by |
10 | * Alan Cox (alan@lxorguk.ukuu.org.uk) |
11 | * Thomas Sailer (sailer@ife.ee.ethz.ch) |
12 | */ |
13 | |
14 | /* |
15 | * TODOs, for both the mixer and the streaming interfaces: |
16 | * |
17 | * - support for UAC2 effect units |
18 | * - support for graphical equalizers |
19 | * - RANGE and MEM set commands (UAC2) |
20 | * - RANGE and MEM interrupt dispatchers (UAC2) |
21 | * - audio channel clustering (UAC2) |
22 | * - audio sample rate converter units (UAC2) |
23 | * - proper handling of clock multipliers (UAC2) |
24 | * - dispatch clock change notifications (UAC2) |
25 | * - stop PCM streams which use a clock that became invalid |
26 | * - stop PCM streams which use a clock selector that has changed |
27 | * - parse available sample rates again when clock sources changed |
28 | */ |
29 | |
30 | #include <linux/bitops.h> |
31 | #include <linux/init.h> |
32 | #include <linux/list.h> |
33 | #include <linux/log2.h> |
34 | #include <linux/slab.h> |
35 | #include <linux/string.h> |
36 | #include <linux/usb.h> |
37 | #include <linux/usb/audio.h> |
38 | #include <linux/usb/audio-v2.h> |
39 | #include <linux/usb/audio-v3.h> |
40 | |
41 | #include <sound/core.h> |
42 | #include <sound/control.h> |
43 | #include <sound/hwdep.h> |
44 | #include <sound/info.h> |
45 | #include <sound/tlv.h> |
46 | |
47 | #include "usbaudio.h" |
48 | #include "mixer.h" |
49 | #include "helper.h" |
50 | #include "mixer_quirks.h" |
51 | #include "power.h" |
52 | |
53 | #define MAX_ID_ELEMS 256 |
54 | |
55 | struct usb_audio_term { |
56 | int id; |
57 | int type; |
58 | int channels; |
59 | unsigned int chconfig; |
60 | int name; |
61 | }; |
62 | |
63 | struct usbmix_name_map; |
64 | |
65 | struct mixer_build { |
66 | struct snd_usb_audio *chip; |
67 | struct usb_mixer_interface *mixer; |
68 | unsigned char *buffer; |
69 | unsigned int buflen; |
70 | DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS); |
71 | DECLARE_BITMAP(termbitmap, MAX_ID_ELEMS); |
72 | struct usb_audio_term oterm; |
73 | const struct usbmix_name_map *map; |
74 | const struct usbmix_selector_map *selector_map; |
75 | }; |
76 | |
77 | /*E-mu 0202/0404/0204 eXtension Unit(XU) control*/ |
78 | enum { |
79 | USB_XU_CLOCK_RATE = 0xe301, |
80 | USB_XU_CLOCK_SOURCE = 0xe302, |
81 | USB_XU_DIGITAL_IO_STATUS = 0xe303, |
82 | USB_XU_DEVICE_OPTIONS = 0xe304, |
83 | USB_XU_DIRECT_MONITORING = 0xe305, |
84 | USB_XU_METERING = 0xe306 |
85 | }; |
86 | enum { |
87 | USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/ |
88 | USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */ |
89 | USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */ |
90 | USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */ |
91 | }; |
92 | |
93 | /* |
94 | * manual mapping of mixer names |
95 | * if the mixer topology is too complicated and the parsed names are |
96 | * ambiguous, add the entries in usbmixer_maps.c. |
97 | */ |
98 | #include "mixer_maps.c" |
99 | |
100 | static const struct usbmix_name_map * |
101 | find_map(const struct usbmix_name_map *p, int unitid, int control) |
102 | { |
103 | if (!p) |
104 | return NULL; |
105 | |
106 | for (; p->id; p++) { |
107 | if (p->id == unitid && |
108 | (!control || !p->control || control == p->control)) |
109 | return p; |
110 | } |
111 | return NULL; |
112 | } |
113 | |
114 | /* get the mapped name if the unit matches */ |
115 | static int |
116 | check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen) |
117 | { |
118 | int len; |
119 | |
120 | if (!p || !p->name) |
121 | return 0; |
122 | |
123 | buflen--; |
124 | len = strscpy(p: buf, q: p->name, size: buflen); |
125 | return len < 0 ? buflen : len; |
126 | } |
127 | |
128 | /* ignore the error value if ignore_ctl_error flag is set */ |
129 | #define filter_error(cval, err) \ |
130 | ((cval)->head.mixer->ignore_ctl_error ? 0 : (err)) |
131 | |
132 | /* check whether the control should be ignored */ |
133 | static inline int |
134 | check_ignored_ctl(const struct usbmix_name_map *p) |
135 | { |
136 | if (!p || p->name || p->dB) |
137 | return 0; |
138 | return 1; |
139 | } |
140 | |
141 | /* dB mapping */ |
142 | static inline void check_mapped_dB(const struct usbmix_name_map *p, |
143 | struct usb_mixer_elem_info *cval) |
144 | { |
145 | if (p && p->dB) { |
146 | cval->dBmin = p->dB->min; |
147 | cval->dBmax = p->dB->max; |
148 | cval->min_mute = p->dB->min_mute; |
149 | cval->initialized = 1; |
150 | } |
151 | } |
152 | |
153 | /* get the mapped selector source name */ |
154 | static int check_mapped_selector_name(struct mixer_build *state, int unitid, |
155 | int index, char *buf, int buflen) |
156 | { |
157 | const struct usbmix_selector_map *p; |
158 | int len; |
159 | |
160 | if (!state->selector_map) |
161 | return 0; |
162 | for (p = state->selector_map; p->id; p++) { |
163 | if (p->id == unitid && index < p->count) { |
164 | len = strscpy(p: buf, q: p->names[index], size: buflen); |
165 | return len < 0 ? buflen : len; |
166 | } |
167 | } |
168 | return 0; |
169 | } |
170 | |
171 | /* |
172 | * find an audio control unit with the given unit id |
173 | */ |
174 | static void *find_audio_control_unit(struct mixer_build *state, |
175 | unsigned char unit) |
176 | { |
177 | /* we just parse the header */ |
178 | struct uac_feature_unit_descriptor *hdr = NULL; |
179 | |
180 | while ((hdr = snd_usb_find_desc(descstart: state->buffer, desclen: state->buflen, after: hdr, |
181 | USB_DT_CS_INTERFACE)) != NULL) { |
182 | if (hdr->bLength >= 4 && |
183 | hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL && |
184 | hdr->bDescriptorSubtype <= UAC3_SAMPLE_RATE_CONVERTER && |
185 | hdr->bUnitID == unit) |
186 | return hdr; |
187 | } |
188 | |
189 | return NULL; |
190 | } |
191 | |
192 | /* |
193 | * copy a string with the given id |
194 | */ |
195 | static int snd_usb_copy_string_desc(struct snd_usb_audio *chip, |
196 | int index, char *buf, int maxlen) |
197 | { |
198 | int len = usb_string(dev: chip->dev, index, buf, size: maxlen - 1); |
199 | |
200 | if (len < 0) |
201 | return 0; |
202 | |
203 | buf[len] = 0; |
204 | return len; |
205 | } |
206 | |
207 | /* |
208 | * convert from the byte/word on usb descriptor to the zero-based integer |
209 | */ |
210 | static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) |
211 | { |
212 | switch (cval->val_type) { |
213 | case USB_MIXER_BOOLEAN: |
214 | return !!val; |
215 | case USB_MIXER_INV_BOOLEAN: |
216 | return !val; |
217 | case USB_MIXER_U8: |
218 | val &= 0xff; |
219 | break; |
220 | case USB_MIXER_S8: |
221 | val &= 0xff; |
222 | if (val >= 0x80) |
223 | val -= 0x100; |
224 | break; |
225 | case USB_MIXER_U16: |
226 | val &= 0xffff; |
227 | break; |
228 | case USB_MIXER_S16: |
229 | val &= 0xffff; |
230 | if (val >= 0x8000) |
231 | val -= 0x10000; |
232 | break; |
233 | } |
234 | return val; |
235 | } |
236 | |
237 | /* |
238 | * convert from the zero-based int to the byte/word for usb descriptor |
239 | */ |
240 | static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) |
241 | { |
242 | switch (cval->val_type) { |
243 | case USB_MIXER_BOOLEAN: |
244 | return !!val; |
245 | case USB_MIXER_INV_BOOLEAN: |
246 | return !val; |
247 | case USB_MIXER_S8: |
248 | case USB_MIXER_U8: |
249 | return val & 0xff; |
250 | case USB_MIXER_S16: |
251 | case USB_MIXER_U16: |
252 | return val & 0xffff; |
253 | } |
254 | return 0; /* not reached */ |
255 | } |
256 | |
257 | static int get_relative_value(struct usb_mixer_elem_info *cval, int val) |
258 | { |
259 | if (!cval->res) |
260 | cval->res = 1; |
261 | if (val < cval->min) |
262 | return 0; |
263 | else if (val >= cval->max) |
264 | return DIV_ROUND_UP(cval->max - cval->min, cval->res); |
265 | else |
266 | return (val - cval->min) / cval->res; |
267 | } |
268 | |
269 | static int get_abs_value(struct usb_mixer_elem_info *cval, int val) |
270 | { |
271 | if (val < 0) |
272 | return cval->min; |
273 | if (!cval->res) |
274 | cval->res = 1; |
275 | val *= cval->res; |
276 | val += cval->min; |
277 | if (val > cval->max) |
278 | return cval->max; |
279 | return val; |
280 | } |
281 | |
282 | static int uac2_ctl_value_size(int val_type) |
283 | { |
284 | switch (val_type) { |
285 | case USB_MIXER_S32: |
286 | case USB_MIXER_U32: |
287 | return 4; |
288 | case USB_MIXER_S16: |
289 | case USB_MIXER_U16: |
290 | return 2; |
291 | default: |
292 | return 1; |
293 | } |
294 | return 0; /* unreachable */ |
295 | } |
296 | |
297 | |
298 | /* |
299 | * retrieve a mixer value |
300 | */ |
301 | |
302 | static inline int mixer_ctrl_intf(struct usb_mixer_interface *mixer) |
303 | { |
304 | return get_iface_desc(mixer->hostif)->bInterfaceNumber; |
305 | } |
306 | |
307 | static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, |
308 | int validx, int *value_ret) |
309 | { |
310 | struct snd_usb_audio *chip = cval->head.mixer->chip; |
311 | unsigned char buf[2]; |
312 | int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; |
313 | int timeout = 10; |
314 | int idx = 0, err; |
315 | |
316 | err = snd_usb_lock_shutdown(chip); |
317 | if (err < 0) |
318 | return -EIO; |
319 | |
320 | while (timeout-- > 0) { |
321 | idx = mixer_ctrl_intf(mixer: cval->head.mixer) | (cval->head.id << 8); |
322 | err = snd_usb_ctl_msg(dev: chip->dev, usb_rcvctrlpipe(chip->dev, 0), request, |
323 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
324 | value: validx, index: idx, data: buf, size: val_len); |
325 | if (err >= val_len) { |
326 | *value_ret = convert_signed_value(cval, val: snd_usb_combine_bytes(bytes: buf, size: val_len)); |
327 | err = 0; |
328 | goto out; |
329 | } else if (err == -ETIMEDOUT) { |
330 | goto out; |
331 | } |
332 | } |
333 | usb_audio_dbg(chip, |
334 | "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n" , |
335 | request, validx, idx, cval->val_type); |
336 | err = -EINVAL; |
337 | |
338 | out: |
339 | snd_usb_unlock_shutdown(chip); |
340 | return err; |
341 | } |
342 | |
343 | static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, |
344 | int validx, int *value_ret) |
345 | { |
346 | struct snd_usb_audio *chip = cval->head.mixer->chip; |
347 | /* enough space for one range */ |
348 | unsigned char buf[sizeof(__u16) + 3 * sizeof(__u32)]; |
349 | unsigned char *val; |
350 | int idx = 0, ret, val_size, size; |
351 | __u8 bRequest; |
352 | |
353 | val_size = uac2_ctl_value_size(val_type: cval->val_type); |
354 | |
355 | if (request == UAC_GET_CUR) { |
356 | bRequest = UAC2_CS_CUR; |
357 | size = val_size; |
358 | } else { |
359 | bRequest = UAC2_CS_RANGE; |
360 | size = sizeof(__u16) + 3 * val_size; |
361 | } |
362 | |
363 | memset(buf, 0, sizeof(buf)); |
364 | |
365 | if (snd_usb_lock_shutdown(chip)) |
366 | return -EIO; |
367 | |
368 | idx = mixer_ctrl_intf(mixer: cval->head.mixer) | (cval->head.id << 8); |
369 | ret = snd_usb_ctl_msg(dev: chip->dev, usb_rcvctrlpipe(chip->dev, 0), request: bRequest, |
370 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
371 | value: validx, index: idx, data: buf, size); |
372 | snd_usb_unlock_shutdown(chip); |
373 | |
374 | if (ret < 0) { |
375 | usb_audio_dbg(chip, |
376 | "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n" , |
377 | request, validx, idx, cval->val_type); |
378 | return ret; |
379 | } |
380 | |
381 | /* FIXME: how should we handle multiple triplets here? */ |
382 | |
383 | switch (request) { |
384 | case UAC_GET_CUR: |
385 | val = buf; |
386 | break; |
387 | case UAC_GET_MIN: |
388 | val = buf + sizeof(__u16); |
389 | break; |
390 | case UAC_GET_MAX: |
391 | val = buf + sizeof(__u16) + val_size; |
392 | break; |
393 | case UAC_GET_RES: |
394 | val = buf + sizeof(__u16) + val_size * 2; |
395 | break; |
396 | default: |
397 | return -EINVAL; |
398 | } |
399 | |
400 | *value_ret = convert_signed_value(cval, |
401 | val: snd_usb_combine_bytes(bytes: val, size: val_size)); |
402 | |
403 | return 0; |
404 | } |
405 | |
406 | static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, |
407 | int validx, int *value_ret) |
408 | { |
409 | validx += cval->idx_off; |
410 | |
411 | return (cval->head.mixer->protocol == UAC_VERSION_1) ? |
412 | get_ctl_value_v1(cval, request, validx, value_ret) : |
413 | get_ctl_value_v2(cval, request, validx, value_ret); |
414 | } |
415 | |
416 | static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, |
417 | int validx, int *value) |
418 | { |
419 | return get_ctl_value(cval, UAC_GET_CUR, validx, value_ret: value); |
420 | } |
421 | |
422 | /* channel = 0: master, 1 = first channel */ |
423 | static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval, |
424 | int channel, int *value) |
425 | { |
426 | return get_ctl_value(cval, UAC_GET_CUR, |
427 | validx: (cval->control << 8) | channel, |
428 | value_ret: value); |
429 | } |
430 | |
431 | int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval, |
432 | int channel, int index, int *value) |
433 | { |
434 | int err; |
435 | |
436 | if (cval->cached & (1 << channel)) { |
437 | *value = cval->cache_val[index]; |
438 | return 0; |
439 | } |
440 | err = get_cur_mix_raw(cval, channel, value); |
441 | if (err < 0) { |
442 | if (!cval->head.mixer->ignore_ctl_error) |
443 | usb_audio_dbg(cval->head.mixer->chip, |
444 | "cannot get current value for control %d ch %d: err = %d\n" , |
445 | cval->control, channel, err); |
446 | return err; |
447 | } |
448 | cval->cached |= 1 << channel; |
449 | cval->cache_val[index] = *value; |
450 | return 0; |
451 | } |
452 | |
453 | /* |
454 | * set a mixer value |
455 | */ |
456 | |
457 | int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, |
458 | int request, int validx, int value_set) |
459 | { |
460 | struct snd_usb_audio *chip = cval->head.mixer->chip; |
461 | unsigned char buf[4]; |
462 | int idx = 0, val_len, err, timeout = 10; |
463 | |
464 | validx += cval->idx_off; |
465 | |
466 | |
467 | if (cval->head.mixer->protocol == UAC_VERSION_1) { |
468 | val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; |
469 | } else { /* UAC_VERSION_2/3 */ |
470 | val_len = uac2_ctl_value_size(val_type: cval->val_type); |
471 | |
472 | /* FIXME */ |
473 | if (request != UAC_SET_CUR) { |
474 | usb_audio_dbg(chip, "RANGE setting not yet supported\n" ); |
475 | return -EINVAL; |
476 | } |
477 | |
478 | request = UAC2_CS_CUR; |
479 | } |
480 | |
481 | value_set = convert_bytes_value(cval, val: value_set); |
482 | buf[0] = value_set & 0xff; |
483 | buf[1] = (value_set >> 8) & 0xff; |
484 | buf[2] = (value_set >> 16) & 0xff; |
485 | buf[3] = (value_set >> 24) & 0xff; |
486 | |
487 | err = snd_usb_lock_shutdown(chip); |
488 | if (err < 0) |
489 | return -EIO; |
490 | |
491 | while (timeout-- > 0) { |
492 | idx = mixer_ctrl_intf(mixer: cval->head.mixer) | (cval->head.id << 8); |
493 | err = snd_usb_ctl_msg(dev: chip->dev, |
494 | usb_sndctrlpipe(chip->dev, 0), request, |
495 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, |
496 | value: validx, index: idx, data: buf, size: val_len); |
497 | if (err >= 0) { |
498 | err = 0; |
499 | goto out; |
500 | } else if (err == -ETIMEDOUT) { |
501 | goto out; |
502 | } |
503 | } |
504 | usb_audio_dbg(chip, "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n" , |
505 | request, validx, idx, cval->val_type, buf[0], buf[1]); |
506 | err = -EINVAL; |
507 | |
508 | out: |
509 | snd_usb_unlock_shutdown(chip); |
510 | return err; |
511 | } |
512 | |
513 | static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, |
514 | int validx, int value) |
515 | { |
516 | return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value_set: value); |
517 | } |
518 | |
519 | int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, |
520 | int index, int value) |
521 | { |
522 | int err; |
523 | unsigned int read_only = (channel == 0) ? |
524 | cval->master_readonly : |
525 | cval->ch_readonly & (1 << (channel - 1)); |
526 | |
527 | if (read_only) { |
528 | usb_audio_dbg(cval->head.mixer->chip, |
529 | "%s(): channel %d of control %d is read_only\n" , |
530 | __func__, channel, cval->control); |
531 | return 0; |
532 | } |
533 | |
534 | err = snd_usb_mixer_set_ctl_value(cval, |
535 | UAC_SET_CUR, validx: (cval->control << 8) | channel, |
536 | value_set: value); |
537 | if (err < 0) |
538 | return err; |
539 | cval->cached |= 1 << channel; |
540 | cval->cache_val[index] = value; |
541 | return 0; |
542 | } |
543 | |
544 | /* |
545 | * TLV callback for mixer volume controls |
546 | */ |
547 | int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, |
548 | unsigned int size, unsigned int __user *_tlv) |
549 | { |
550 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
551 | DECLARE_TLV_DB_MINMAX(scale, 0, 0); |
552 | |
553 | if (size < sizeof(scale)) |
554 | return -ENOMEM; |
555 | if (cval->min_mute) |
556 | scale[0] = SNDRV_CTL_TLVT_DB_MINMAX_MUTE; |
557 | scale[2] = cval->dBmin; |
558 | scale[3] = cval->dBmax; |
559 | if (copy_to_user(to: _tlv, from: scale, n: sizeof(scale))) |
560 | return -EFAULT; |
561 | return 0; |
562 | } |
563 | |
564 | /* |
565 | * parser routines begin here... |
566 | */ |
567 | |
568 | static int parse_audio_unit(struct mixer_build *state, int unitid); |
569 | |
570 | |
571 | /* |
572 | * check if the input/output channel routing is enabled on the given bitmap. |
573 | * used for mixer unit parser |
574 | */ |
575 | static int check_matrix_bitmap(unsigned char *bmap, |
576 | int ich, int och, int num_outs) |
577 | { |
578 | int idx = ich * num_outs + och; |
579 | return bmap[idx >> 3] & (0x80 >> (idx & 7)); |
580 | } |
581 | |
582 | /* |
583 | * add an alsa control element |
584 | * search and increment the index until an empty slot is found. |
585 | * |
586 | * if failed, give up and free the control instance. |
587 | */ |
588 | |
589 | int snd_usb_mixer_add_list(struct usb_mixer_elem_list *list, |
590 | struct snd_kcontrol *kctl, |
591 | bool is_std_info) |
592 | { |
593 | struct usb_mixer_interface *mixer = list->mixer; |
594 | int err; |
595 | |
596 | while (snd_ctl_find_id(card: mixer->chip->card, id: &kctl->id)) |
597 | kctl->id.index++; |
598 | err = snd_ctl_add(card: mixer->chip->card, kcontrol: kctl); |
599 | if (err < 0) { |
600 | usb_audio_dbg(mixer->chip, "cannot add control (err = %d)\n" , |
601 | err); |
602 | return err; |
603 | } |
604 | list->kctl = kctl; |
605 | list->is_std_info = is_std_info; |
606 | list->next_id_elem = mixer->id_elems[list->id]; |
607 | mixer->id_elems[list->id] = list; |
608 | return 0; |
609 | } |
610 | |
611 | /* |
612 | * get a terminal name string |
613 | */ |
614 | |
615 | static struct iterm_name_combo { |
616 | int type; |
617 | char *name; |
618 | } iterm_names[] = { |
619 | { 0x0300, "Output" }, |
620 | { 0x0301, "Speaker" }, |
621 | { 0x0302, "Headphone" }, |
622 | { 0x0303, "HMD Audio" }, |
623 | { 0x0304, "Desktop Speaker" }, |
624 | { 0x0305, "Room Speaker" }, |
625 | { 0x0306, "Com Speaker" }, |
626 | { 0x0307, "LFE" }, |
627 | { 0x0600, "External In" }, |
628 | { 0x0601, "Analog In" }, |
629 | { 0x0602, "Digital In" }, |
630 | { 0x0603, "Line" }, |
631 | { 0x0604, "Legacy In" }, |
632 | { 0x0605, "IEC958 In" }, |
633 | { 0x0606, "1394 DA Stream" }, |
634 | { 0x0607, "1394 DV Stream" }, |
635 | { 0x0700, "Embedded" }, |
636 | { 0x0701, "Noise Source" }, |
637 | { 0x0702, "Equalization Noise" }, |
638 | { 0x0703, "CD" }, |
639 | { 0x0704, "DAT" }, |
640 | { 0x0705, "DCC" }, |
641 | { 0x0706, "MiniDisk" }, |
642 | { 0x0707, "Analog Tape" }, |
643 | { 0x0708, "Phonograph" }, |
644 | { 0x0709, "VCR Audio" }, |
645 | { 0x070a, "Video Disk Audio" }, |
646 | { 0x070b, "DVD Audio" }, |
647 | { 0x070c, "TV Tuner Audio" }, |
648 | { 0x070d, "Satellite Rec Audio" }, |
649 | { 0x070e, "Cable Tuner Audio" }, |
650 | { 0x070f, "DSS Audio" }, |
651 | { 0x0710, "Radio Receiver" }, |
652 | { 0x0711, "Radio Transmitter" }, |
653 | { 0x0712, "Multi-Track Recorder" }, |
654 | { 0x0713, "Synthesizer" }, |
655 | { 0 }, |
656 | }; |
657 | |
658 | static int get_term_name(struct snd_usb_audio *chip, struct usb_audio_term *iterm, |
659 | unsigned char *name, int maxlen, int term_only) |
660 | { |
661 | struct iterm_name_combo *names; |
662 | int len; |
663 | |
664 | if (iterm->name) { |
665 | len = snd_usb_copy_string_desc(chip, index: iterm->name, |
666 | buf: name, maxlen); |
667 | if (len) |
668 | return len; |
669 | } |
670 | |
671 | /* virtual type - not a real terminal */ |
672 | if (iterm->type >> 16) { |
673 | if (term_only) |
674 | return 0; |
675 | switch (iterm->type >> 16) { |
676 | case UAC3_SELECTOR_UNIT: |
677 | strcpy(p: name, q: "Selector" ); |
678 | return 8; |
679 | case UAC3_PROCESSING_UNIT: |
680 | strcpy(p: name, q: "Process Unit" ); |
681 | return 12; |
682 | case UAC3_EXTENSION_UNIT: |
683 | strcpy(p: name, q: "Ext Unit" ); |
684 | return 8; |
685 | case UAC3_MIXER_UNIT: |
686 | strcpy(p: name, q: "Mixer" ); |
687 | return 5; |
688 | default: |
689 | return sprintf(buf: name, fmt: "Unit %d" , iterm->id); |
690 | } |
691 | } |
692 | |
693 | switch (iterm->type & 0xff00) { |
694 | case 0x0100: |
695 | strcpy(p: name, q: "PCM" ); |
696 | return 3; |
697 | case 0x0200: |
698 | strcpy(p: name, q: "Mic" ); |
699 | return 3; |
700 | case 0x0400: |
701 | strcpy(p: name, q: "Headset" ); |
702 | return 7; |
703 | case 0x0500: |
704 | strcpy(p: name, q: "Phone" ); |
705 | return 5; |
706 | } |
707 | |
708 | for (names = iterm_names; names->type; names++) { |
709 | if (names->type == iterm->type) { |
710 | strcpy(p: name, q: names->name); |
711 | return strlen(names->name); |
712 | } |
713 | } |
714 | |
715 | return 0; |
716 | } |
717 | |
718 | /* |
719 | * Get logical cluster information for UAC3 devices. |
720 | */ |
721 | static int get_cluster_channels_v3(struct mixer_build *state, unsigned int cluster_id) |
722 | { |
723 | struct uac3_cluster_header_descriptor ; |
724 | int err; |
725 | |
726 | err = snd_usb_ctl_msg(dev: state->chip->dev, |
727 | usb_rcvctrlpipe(state->chip->dev, 0), |
728 | UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR, |
729 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
730 | value: cluster_id, |
731 | index: snd_usb_ctrl_intf(chip: state->chip), |
732 | data: &c_header, size: sizeof(c_header)); |
733 | if (err < 0) |
734 | goto error; |
735 | if (err != sizeof(c_header)) { |
736 | err = -EIO; |
737 | goto error; |
738 | } |
739 | |
740 | return c_header.bNrChannels; |
741 | |
742 | error: |
743 | usb_audio_err(state->chip, "cannot request logical cluster ID: %d (err: %d)\n" , cluster_id, err); |
744 | return err; |
745 | } |
746 | |
747 | /* |
748 | * Get number of channels for a Mixer Unit. |
749 | */ |
750 | static int uac_mixer_unit_get_channels(struct mixer_build *state, |
751 | struct uac_mixer_unit_descriptor *desc) |
752 | { |
753 | int mu_channels; |
754 | |
755 | switch (state->mixer->protocol) { |
756 | case UAC_VERSION_1: |
757 | case UAC_VERSION_2: |
758 | default: |
759 | if (desc->bLength < sizeof(*desc) + desc->bNrInPins + 1) |
760 | return 0; /* no bmControls -> skip */ |
761 | mu_channels = uac_mixer_unit_bNrChannels(desc); |
762 | break; |
763 | case UAC_VERSION_3: |
764 | mu_channels = get_cluster_channels_v3(state, |
765 | cluster_id: uac3_mixer_unit_wClusterDescrID(desc)); |
766 | break; |
767 | } |
768 | |
769 | return mu_channels; |
770 | } |
771 | |
772 | /* |
773 | * Parse Input Terminal Unit |
774 | */ |
775 | static int __check_input_term(struct mixer_build *state, int id, |
776 | struct usb_audio_term *term); |
777 | |
778 | static int parse_term_uac1_iterm_unit(struct mixer_build *state, |
779 | struct usb_audio_term *term, |
780 | void *p1, int id) |
781 | { |
782 | struct uac_input_terminal_descriptor *d = p1; |
783 | |
784 | term->type = le16_to_cpu(d->wTerminalType); |
785 | term->channels = d->bNrChannels; |
786 | term->chconfig = le16_to_cpu(d->wChannelConfig); |
787 | term->name = d->iTerminal; |
788 | return 0; |
789 | } |
790 | |
791 | static int parse_term_uac2_iterm_unit(struct mixer_build *state, |
792 | struct usb_audio_term *term, |
793 | void *p1, int id) |
794 | { |
795 | struct uac2_input_terminal_descriptor *d = p1; |
796 | int err; |
797 | |
798 | /* call recursively to verify the referenced clock entity */ |
799 | err = __check_input_term(state, id: d->bCSourceID, term); |
800 | if (err < 0) |
801 | return err; |
802 | |
803 | /* save input term properties after recursion, |
804 | * to ensure they are not overriden by the recursion calls |
805 | */ |
806 | term->id = id; |
807 | term->type = le16_to_cpu(d->wTerminalType); |
808 | term->channels = d->bNrChannels; |
809 | term->chconfig = le32_to_cpu(d->bmChannelConfig); |
810 | term->name = d->iTerminal; |
811 | return 0; |
812 | } |
813 | |
814 | static int parse_term_uac3_iterm_unit(struct mixer_build *state, |
815 | struct usb_audio_term *term, |
816 | void *p1, int id) |
817 | { |
818 | struct uac3_input_terminal_descriptor *d = p1; |
819 | int err; |
820 | |
821 | /* call recursively to verify the referenced clock entity */ |
822 | err = __check_input_term(state, id: d->bCSourceID, term); |
823 | if (err < 0) |
824 | return err; |
825 | |
826 | /* save input term properties after recursion, |
827 | * to ensure they are not overriden by the recursion calls |
828 | */ |
829 | term->id = id; |
830 | term->type = le16_to_cpu(d->wTerminalType); |
831 | |
832 | err = get_cluster_channels_v3(state, le16_to_cpu(d->wClusterDescrID)); |
833 | if (err < 0) |
834 | return err; |
835 | term->channels = err; |
836 | |
837 | /* REVISIT: UAC3 IT doesn't have channels cfg */ |
838 | term->chconfig = 0; |
839 | |
840 | term->name = le16_to_cpu(d->wTerminalDescrStr); |
841 | return 0; |
842 | } |
843 | |
844 | static int parse_term_mixer_unit(struct mixer_build *state, |
845 | struct usb_audio_term *term, |
846 | void *p1, int id) |
847 | { |
848 | struct uac_mixer_unit_descriptor *d = p1; |
849 | int protocol = state->mixer->protocol; |
850 | int err; |
851 | |
852 | err = uac_mixer_unit_get_channels(state, desc: d); |
853 | if (err <= 0) |
854 | return err; |
855 | |
856 | term->type = UAC3_MIXER_UNIT << 16; /* virtual type */ |
857 | term->channels = err; |
858 | if (protocol != UAC_VERSION_3) { |
859 | term->chconfig = uac_mixer_unit_wChannelConfig(desc: d, protocol); |
860 | term->name = uac_mixer_unit_iMixer(desc: d); |
861 | } |
862 | return 0; |
863 | } |
864 | |
865 | static int parse_term_selector_unit(struct mixer_build *state, |
866 | struct usb_audio_term *term, |
867 | void *p1, int id) |
868 | { |
869 | struct uac_selector_unit_descriptor *d = p1; |
870 | int err; |
871 | |
872 | /* call recursively to retrieve the channel info */ |
873 | err = __check_input_term(state, id: d->baSourceID[0], term); |
874 | if (err < 0) |
875 | return err; |
876 | term->type = UAC3_SELECTOR_UNIT << 16; /* virtual type */ |
877 | term->id = id; |
878 | if (state->mixer->protocol != UAC_VERSION_3) |
879 | term->name = uac_selector_unit_iSelector(desc: d); |
880 | return 0; |
881 | } |
882 | |
883 | static int parse_term_proc_unit(struct mixer_build *state, |
884 | struct usb_audio_term *term, |
885 | void *p1, int id, int vtype) |
886 | { |
887 | struct uac_processing_unit_descriptor *d = p1; |
888 | int protocol = state->mixer->protocol; |
889 | int err; |
890 | |
891 | if (d->bNrInPins) { |
892 | /* call recursively to retrieve the channel info */ |
893 | err = __check_input_term(state, id: d->baSourceID[0], term); |
894 | if (err < 0) |
895 | return err; |
896 | } |
897 | |
898 | term->type = vtype << 16; /* virtual type */ |
899 | term->id = id; |
900 | |
901 | if (protocol == UAC_VERSION_3) |
902 | return 0; |
903 | |
904 | if (!term->channels) { |
905 | term->channels = uac_processing_unit_bNrChannels(desc: d); |
906 | term->chconfig = uac_processing_unit_wChannelConfig(desc: d, protocol); |
907 | } |
908 | term->name = uac_processing_unit_iProcessing(desc: d, protocol); |
909 | return 0; |
910 | } |
911 | |
912 | static int parse_term_effect_unit(struct mixer_build *state, |
913 | struct usb_audio_term *term, |
914 | void *p1, int id) |
915 | { |
916 | struct uac2_effect_unit_descriptor *d = p1; |
917 | int err; |
918 | |
919 | err = __check_input_term(state, id: d->bSourceID, term); |
920 | if (err < 0) |
921 | return err; |
922 | term->type = UAC3_EFFECT_UNIT << 16; /* virtual type */ |
923 | term->id = id; |
924 | return 0; |
925 | } |
926 | |
927 | static int parse_term_uac2_clock_source(struct mixer_build *state, |
928 | struct usb_audio_term *term, |
929 | void *p1, int id) |
930 | { |
931 | struct uac_clock_source_descriptor *d = p1; |
932 | |
933 | term->type = UAC3_CLOCK_SOURCE << 16; /* virtual type */ |
934 | term->id = id; |
935 | term->name = d->iClockSource; |
936 | return 0; |
937 | } |
938 | |
939 | static int parse_term_uac3_clock_source(struct mixer_build *state, |
940 | struct usb_audio_term *term, |
941 | void *p1, int id) |
942 | { |
943 | struct uac3_clock_source_descriptor *d = p1; |
944 | |
945 | term->type = UAC3_CLOCK_SOURCE << 16; /* virtual type */ |
946 | term->id = id; |
947 | term->name = le16_to_cpu(d->wClockSourceStr); |
948 | return 0; |
949 | } |
950 | |
951 | #define PTYPE(a, b) ((a) << 8 | (b)) |
952 | |
953 | /* |
954 | * parse the source unit recursively until it reaches to a terminal |
955 | * or a branched unit. |
956 | */ |
957 | static int __check_input_term(struct mixer_build *state, int id, |
958 | struct usb_audio_term *term) |
959 | { |
960 | int protocol = state->mixer->protocol; |
961 | void *p1; |
962 | unsigned char *hdr; |
963 | |
964 | for (;;) { |
965 | /* a loop in the terminal chain? */ |
966 | if (test_and_set_bit(nr: id, addr: state->termbitmap)) |
967 | return -EINVAL; |
968 | |
969 | p1 = find_audio_control_unit(state, unit: id); |
970 | if (!p1) |
971 | break; |
972 | if (!snd_usb_validate_audio_desc(p: p1, protocol)) |
973 | break; /* bad descriptor */ |
974 | |
975 | hdr = p1; |
976 | term->id = id; |
977 | |
978 | switch (PTYPE(protocol, hdr[2])) { |
979 | case PTYPE(UAC_VERSION_1, UAC_FEATURE_UNIT): |
980 | case PTYPE(UAC_VERSION_2, UAC_FEATURE_UNIT): |
981 | case PTYPE(UAC_VERSION_3, UAC3_FEATURE_UNIT): { |
982 | /* the header is the same for all versions */ |
983 | struct uac_feature_unit_descriptor *d = p1; |
984 | |
985 | id = d->bSourceID; |
986 | break; /* continue to parse */ |
987 | } |
988 | case PTYPE(UAC_VERSION_1, UAC_INPUT_TERMINAL): |
989 | return parse_term_uac1_iterm_unit(state, term, p1, id); |
990 | case PTYPE(UAC_VERSION_2, UAC_INPUT_TERMINAL): |
991 | return parse_term_uac2_iterm_unit(state, term, p1, id); |
992 | case PTYPE(UAC_VERSION_3, UAC_INPUT_TERMINAL): |
993 | return parse_term_uac3_iterm_unit(state, term, p1, id); |
994 | case PTYPE(UAC_VERSION_1, UAC_MIXER_UNIT): |
995 | case PTYPE(UAC_VERSION_2, UAC_MIXER_UNIT): |
996 | case PTYPE(UAC_VERSION_3, UAC3_MIXER_UNIT): |
997 | return parse_term_mixer_unit(state, term, p1, id); |
998 | case PTYPE(UAC_VERSION_1, UAC_SELECTOR_UNIT): |
999 | case PTYPE(UAC_VERSION_2, UAC_SELECTOR_UNIT): |
1000 | case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SELECTOR): |
1001 | case PTYPE(UAC_VERSION_3, UAC3_SELECTOR_UNIT): |
1002 | case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SELECTOR): |
1003 | return parse_term_selector_unit(state, term, p1, id); |
1004 | case PTYPE(UAC_VERSION_1, UAC1_PROCESSING_UNIT): |
1005 | case PTYPE(UAC_VERSION_2, UAC2_PROCESSING_UNIT_V2): |
1006 | case PTYPE(UAC_VERSION_3, UAC3_PROCESSING_UNIT): |
1007 | return parse_term_proc_unit(state, term, p1, id, |
1008 | UAC3_PROCESSING_UNIT); |
1009 | case PTYPE(UAC_VERSION_2, UAC2_EFFECT_UNIT): |
1010 | case PTYPE(UAC_VERSION_3, UAC3_EFFECT_UNIT): |
1011 | return parse_term_effect_unit(state, term, p1, id); |
1012 | case PTYPE(UAC_VERSION_1, UAC1_EXTENSION_UNIT): |
1013 | case PTYPE(UAC_VERSION_2, UAC2_EXTENSION_UNIT_V2): |
1014 | case PTYPE(UAC_VERSION_3, UAC3_EXTENSION_UNIT): |
1015 | return parse_term_proc_unit(state, term, p1, id, |
1016 | UAC3_EXTENSION_UNIT); |
1017 | case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SOURCE): |
1018 | return parse_term_uac2_clock_source(state, term, p1, id); |
1019 | case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SOURCE): |
1020 | return parse_term_uac3_clock_source(state, term, p1, id); |
1021 | default: |
1022 | return -ENODEV; |
1023 | } |
1024 | } |
1025 | return -ENODEV; |
1026 | } |
1027 | |
1028 | |
1029 | static int check_input_term(struct mixer_build *state, int id, |
1030 | struct usb_audio_term *term) |
1031 | { |
1032 | memset(term, 0, sizeof(*term)); |
1033 | memset(state->termbitmap, 0, sizeof(state->termbitmap)); |
1034 | return __check_input_term(state, id, term); |
1035 | } |
1036 | |
1037 | /* |
1038 | * Feature Unit |
1039 | */ |
1040 | |
1041 | /* feature unit control information */ |
1042 | struct usb_feature_control_info { |
1043 | int control; |
1044 | const char *name; |
1045 | int type; /* data type for uac1 */ |
1046 | int type_uac2; /* data type for uac2 if different from uac1, else -1 */ |
1047 | }; |
1048 | |
1049 | static const struct usb_feature_control_info audio_feature_info[] = { |
1050 | { UAC_FU_MUTE, "Mute" , USB_MIXER_INV_BOOLEAN, -1 }, |
1051 | { UAC_FU_VOLUME, "Volume" , USB_MIXER_S16, -1 }, |
1052 | { UAC_FU_BASS, "Tone Control - Bass" , USB_MIXER_S8, -1 }, |
1053 | { UAC_FU_MID, "Tone Control - Mid" , USB_MIXER_S8, -1 }, |
1054 | { UAC_FU_TREBLE, "Tone Control - Treble" , USB_MIXER_S8, -1 }, |
1055 | { UAC_FU_GRAPHIC_EQUALIZER, "Graphic Equalizer" , USB_MIXER_S8, -1 }, /* FIXME: not implemented yet */ |
1056 | { UAC_FU_AUTOMATIC_GAIN, "Auto Gain Control" , USB_MIXER_BOOLEAN, -1 }, |
1057 | { UAC_FU_DELAY, "Delay Control" , USB_MIXER_U16, USB_MIXER_U32 }, |
1058 | { UAC_FU_BASS_BOOST, "Bass Boost" , USB_MIXER_BOOLEAN, -1 }, |
1059 | { UAC_FU_LOUDNESS, "Loudness" , USB_MIXER_BOOLEAN, -1 }, |
1060 | /* UAC2 specific */ |
1061 | { UAC2_FU_INPUT_GAIN, "Input Gain Control" , USB_MIXER_S16, -1 }, |
1062 | { UAC2_FU_INPUT_GAIN_PAD, "Input Gain Pad Control" , USB_MIXER_S16, -1 }, |
1063 | { UAC2_FU_PHASE_INVERTER, "Phase Inverter Control" , USB_MIXER_BOOLEAN, -1 }, |
1064 | }; |
1065 | |
1066 | static void usb_mixer_elem_info_free(struct usb_mixer_elem_info *cval) |
1067 | { |
1068 | kfree(objp: cval); |
1069 | } |
1070 | |
1071 | /* private_free callback */ |
1072 | void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl) |
1073 | { |
1074 | usb_mixer_elem_info_free(cval: kctl->private_data); |
1075 | kctl->private_data = NULL; |
1076 | } |
1077 | |
1078 | /* |
1079 | * interface to ALSA control for feature/mixer units |
1080 | */ |
1081 | |
1082 | /* volume control quirks */ |
1083 | static void volume_control_quirks(struct usb_mixer_elem_info *cval, |
1084 | struct snd_kcontrol *kctl) |
1085 | { |
1086 | struct snd_usb_audio *chip = cval->head.mixer->chip; |
1087 | switch (chip->usb_id) { |
1088 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
1089 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
1090 | if (strcmp(kctl->id.name, "Effect Duration" ) == 0) { |
1091 | cval->min = 0x0000; |
1092 | cval->max = 0xffff; |
1093 | cval->res = 0x00e6; |
1094 | break; |
1095 | } |
1096 | if (strcmp(kctl->id.name, "Effect Volume" ) == 0 || |
1097 | strcmp(kctl->id.name, "Effect Feedback Volume" ) == 0) { |
1098 | cval->min = 0x00; |
1099 | cval->max = 0xff; |
1100 | break; |
1101 | } |
1102 | if (strstr(kctl->id.name, "Effect Return" ) != NULL) { |
1103 | cval->min = 0xb706; |
1104 | cval->max = 0xff7b; |
1105 | cval->res = 0x0073; |
1106 | break; |
1107 | } |
1108 | if ((strstr(kctl->id.name, "Playback Volume" ) != NULL) || |
1109 | (strstr(kctl->id.name, "Effect Send" ) != NULL)) { |
1110 | cval->min = 0xb5fb; /* -73 dB = 0xb6ff */ |
1111 | cval->max = 0xfcfe; |
1112 | cval->res = 0x0073; |
1113 | } |
1114 | break; |
1115 | |
1116 | case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */ |
1117 | case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */ |
1118 | if (strcmp(kctl->id.name, "Effect Duration" ) == 0) { |
1119 | usb_audio_info(chip, |
1120 | "set quirk for FTU Effect Duration\n" ); |
1121 | cval->min = 0x0000; |
1122 | cval->max = 0x7f00; |
1123 | cval->res = 0x0100; |
1124 | break; |
1125 | } |
1126 | if (strcmp(kctl->id.name, "Effect Volume" ) == 0 || |
1127 | strcmp(kctl->id.name, "Effect Feedback Volume" ) == 0) { |
1128 | usb_audio_info(chip, |
1129 | "set quirks for FTU Effect Feedback/Volume\n" ); |
1130 | cval->min = 0x00; |
1131 | cval->max = 0x7f; |
1132 | break; |
1133 | } |
1134 | break; |
1135 | |
1136 | case USB_ID(0x0d8c, 0x0103): |
1137 | if (!strcmp(kctl->id.name, "PCM Playback Volume" )) { |
1138 | usb_audio_info(chip, |
1139 | "set volume quirk for CM102-A+/102S+\n" ); |
1140 | cval->min = -256; |
1141 | } |
1142 | break; |
1143 | |
1144 | case USB_ID(0x0471, 0x0101): |
1145 | case USB_ID(0x0471, 0x0104): |
1146 | case USB_ID(0x0471, 0x0105): |
1147 | case USB_ID(0x0672, 0x1041): |
1148 | /* quirk for UDA1321/N101. |
1149 | * note that detection between firmware 2.1.1.7 (N101) |
1150 | * and later 2.1.1.21 is not very clear from datasheets. |
1151 | * I hope that the min value is -15360 for newer firmware --jk |
1152 | */ |
1153 | if (!strcmp(kctl->id.name, "PCM Playback Volume" ) && |
1154 | cval->min == -15616) { |
1155 | usb_audio_info(chip, |
1156 | "set volume quirk for UDA1321/N101 chip\n" ); |
1157 | cval->max = -256; |
1158 | } |
1159 | break; |
1160 | |
1161 | case USB_ID(0x046d, 0x09a4): |
1162 | if (!strcmp(kctl->id.name, "Mic Capture Volume" )) { |
1163 | usb_audio_info(chip, |
1164 | "set volume quirk for QuickCam E3500\n" ); |
1165 | cval->min = 6080; |
1166 | cval->max = 8768; |
1167 | cval->res = 192; |
1168 | } |
1169 | break; |
1170 | |
1171 | case USB_ID(0x046d, 0x0807): /* Logitech Webcam C500 */ |
1172 | case USB_ID(0x046d, 0x0808): |
1173 | case USB_ID(0x046d, 0x0809): |
1174 | case USB_ID(0x046d, 0x0819): /* Logitech Webcam C210 */ |
1175 | case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */ |
1176 | case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ |
1177 | case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ |
1178 | case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */ |
1179 | case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */ |
1180 | case USB_ID(0x046d, 0x0991): |
1181 | case USB_ID(0x046d, 0x09a2): /* QuickCam Communicate Deluxe/S7500 */ |
1182 | /* Most audio usb devices lie about volume resolution. |
1183 | * Most Logitech webcams have res = 384. |
1184 | * Probably there is some logitech magic behind this number --fishor |
1185 | */ |
1186 | if (!strcmp(kctl->id.name, "Mic Capture Volume" )) { |
1187 | usb_audio_info(chip, |
1188 | "set resolution quirk: cval->res = 384\n" ); |
1189 | cval->res = 384; |
1190 | } |
1191 | break; |
1192 | case USB_ID(0x0495, 0x3042): /* ESS Technology Asus USB DAC */ |
1193 | if ((strstr(kctl->id.name, "Playback Volume" ) != NULL) || |
1194 | strstr(kctl->id.name, "Capture Volume" ) != NULL) { |
1195 | cval->min >>= 8; |
1196 | cval->max = 0; |
1197 | cval->res = 1; |
1198 | } |
1199 | break; |
1200 | case USB_ID(0x1224, 0x2a25): /* Jieli Technology USB PHY 2.0 */ |
1201 | if (!strcmp(kctl->id.name, "Mic Capture Volume" )) { |
1202 | usb_audio_info(chip, |
1203 | "set resolution quirk: cval->res = 16\n" ); |
1204 | cval->res = 16; |
1205 | } |
1206 | break; |
1207 | case USB_ID(0x1bcf, 0x2283): /* NexiGo N930AF FHD Webcam */ |
1208 | if (!strcmp(kctl->id.name, "Mic Capture Volume" )) { |
1209 | usb_audio_info(chip, |
1210 | "set resolution quirk: cval->res = 16\n" ); |
1211 | cval->res = 16; |
1212 | } |
1213 | break; |
1214 | } |
1215 | } |
1216 | |
1217 | /* forcibly initialize the current mixer value; if GET_CUR fails, set to |
1218 | * the minimum as default |
1219 | */ |
1220 | static void init_cur_mix_raw(struct usb_mixer_elem_info *cval, int ch, int idx) |
1221 | { |
1222 | int val, err; |
1223 | |
1224 | err = snd_usb_get_cur_mix_value(cval, channel: ch, index: idx, value: &val); |
1225 | if (!err) |
1226 | return; |
1227 | if (!cval->head.mixer->ignore_ctl_error) |
1228 | usb_audio_warn(cval->head.mixer->chip, |
1229 | "%d:%d: failed to get current value for ch %d (%d)\n" , |
1230 | cval->head.id, mixer_ctrl_intf(cval->head.mixer), |
1231 | ch, err); |
1232 | snd_usb_set_cur_mix_value(cval, channel: ch, index: idx, value: cval->min); |
1233 | } |
1234 | |
1235 | /* |
1236 | * retrieve the minimum and maximum values for the specified control |
1237 | */ |
1238 | static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval, |
1239 | int default_min, struct snd_kcontrol *kctl) |
1240 | { |
1241 | int i, idx; |
1242 | |
1243 | /* for failsafe */ |
1244 | cval->min = default_min; |
1245 | cval->max = cval->min + 1; |
1246 | cval->res = 1; |
1247 | cval->dBmin = cval->dBmax = 0; |
1248 | |
1249 | if (cval->val_type == USB_MIXER_BOOLEAN || |
1250 | cval->val_type == USB_MIXER_INV_BOOLEAN) { |
1251 | cval->initialized = 1; |
1252 | } else { |
1253 | int minchn = 0; |
1254 | if (cval->cmask) { |
1255 | for (i = 0; i < MAX_CHANNELS; i++) |
1256 | if (cval->cmask & (1 << i)) { |
1257 | minchn = i + 1; |
1258 | break; |
1259 | } |
1260 | } |
1261 | if (get_ctl_value(cval, UAC_GET_MAX, validx: (cval->control << 8) | minchn, value_ret: &cval->max) < 0 || |
1262 | get_ctl_value(cval, UAC_GET_MIN, validx: (cval->control << 8) | minchn, value_ret: &cval->min) < 0) { |
1263 | usb_audio_err(cval->head.mixer->chip, |
1264 | "%d:%d: cannot get min/max values for control %d (id %d)\n" , |
1265 | cval->head.id, mixer_ctrl_intf(cval->head.mixer), |
1266 | cval->control, cval->head.id); |
1267 | return -EINVAL; |
1268 | } |
1269 | if (get_ctl_value(cval, UAC_GET_RES, |
1270 | validx: (cval->control << 8) | minchn, |
1271 | value_ret: &cval->res) < 0) { |
1272 | cval->res = 1; |
1273 | } else if (cval->head.mixer->protocol == UAC_VERSION_1) { |
1274 | int last_valid_res = cval->res; |
1275 | |
1276 | while (cval->res > 1) { |
1277 | if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES, |
1278 | validx: (cval->control << 8) | minchn, |
1279 | value_set: cval->res / 2) < 0) |
1280 | break; |
1281 | cval->res /= 2; |
1282 | } |
1283 | if (get_ctl_value(cval, UAC_GET_RES, |
1284 | validx: (cval->control << 8) | minchn, value_ret: &cval->res) < 0) |
1285 | cval->res = last_valid_res; |
1286 | } |
1287 | if (cval->res == 0) |
1288 | cval->res = 1; |
1289 | |
1290 | /* Additional checks for the proper resolution |
1291 | * |
1292 | * Some devices report smaller resolutions than actually |
1293 | * reacting. They don't return errors but simply clip |
1294 | * to the lower aligned value. |
1295 | */ |
1296 | if (cval->min + cval->res < cval->max) { |
1297 | int last_valid_res = cval->res; |
1298 | int saved, test, check; |
1299 | if (get_cur_mix_raw(cval, channel: minchn, value: &saved) < 0) |
1300 | goto no_res_check; |
1301 | for (;;) { |
1302 | test = saved; |
1303 | if (test < cval->max) |
1304 | test += cval->res; |
1305 | else |
1306 | test -= cval->res; |
1307 | if (test < cval->min || test > cval->max || |
1308 | snd_usb_set_cur_mix_value(cval, channel: minchn, index: 0, value: test) || |
1309 | get_cur_mix_raw(cval, channel: minchn, value: &check)) { |
1310 | cval->res = last_valid_res; |
1311 | break; |
1312 | } |
1313 | if (test == check) |
1314 | break; |
1315 | cval->res *= 2; |
1316 | } |
1317 | snd_usb_set_cur_mix_value(cval, channel: minchn, index: 0, value: saved); |
1318 | } |
1319 | |
1320 | no_res_check: |
1321 | cval->initialized = 1; |
1322 | } |
1323 | |
1324 | if (kctl) |
1325 | volume_control_quirks(cval, kctl); |
1326 | |
1327 | /* USB descriptions contain the dB scale in 1/256 dB unit |
1328 | * while ALSA TLV contains in 1/100 dB unit |
1329 | */ |
1330 | cval->dBmin = (convert_signed_value(cval, val: cval->min) * 100) / 256; |
1331 | cval->dBmax = (convert_signed_value(cval, val: cval->max) * 100) / 256; |
1332 | if (cval->dBmin > cval->dBmax) { |
1333 | /* something is wrong; assume it's either from/to 0dB */ |
1334 | if (cval->dBmin < 0) |
1335 | cval->dBmax = 0; |
1336 | else if (cval->dBmin > 0) |
1337 | cval->dBmin = 0; |
1338 | if (cval->dBmin > cval->dBmax) { |
1339 | /* totally crap, return an error */ |
1340 | return -EINVAL; |
1341 | } |
1342 | } else { |
1343 | /* if the max volume is too low, it's likely a bogus range; |
1344 | * here we use -96dB as the threshold |
1345 | */ |
1346 | if (cval->dBmax <= -9600) { |
1347 | usb_audio_info(cval->head.mixer->chip, |
1348 | "%d:%d: bogus dB values (%d/%d), disabling dB reporting\n" , |
1349 | cval->head.id, mixer_ctrl_intf(cval->head.mixer), |
1350 | cval->dBmin, cval->dBmax); |
1351 | cval->dBmin = cval->dBmax = 0; |
1352 | } |
1353 | } |
1354 | |
1355 | /* initialize all elements */ |
1356 | if (!cval->cmask) { |
1357 | init_cur_mix_raw(cval, ch: 0, idx: 0); |
1358 | } else { |
1359 | idx = 0; |
1360 | for (i = 0; i < MAX_CHANNELS; i++) { |
1361 | if (cval->cmask & (1 << i)) { |
1362 | init_cur_mix_raw(cval, ch: i + 1, idx); |
1363 | idx++; |
1364 | } |
1365 | } |
1366 | } |
1367 | |
1368 | return 0; |
1369 | } |
1370 | |
1371 | #define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL) |
1372 | |
1373 | /* get a feature/mixer unit info */ |
1374 | static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, |
1375 | struct snd_ctl_elem_info *uinfo) |
1376 | { |
1377 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1378 | |
1379 | if (cval->val_type == USB_MIXER_BOOLEAN || |
1380 | cval->val_type == USB_MIXER_INV_BOOLEAN) |
1381 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
1382 | else |
1383 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
1384 | uinfo->count = cval->channels; |
1385 | if (cval->val_type == USB_MIXER_BOOLEAN || |
1386 | cval->val_type == USB_MIXER_INV_BOOLEAN) { |
1387 | uinfo->value.integer.min = 0; |
1388 | uinfo->value.integer.max = 1; |
1389 | } else { |
1390 | if (!cval->initialized) { |
1391 | get_min_max_with_quirks(cval, default_min: 0, kctl: kcontrol); |
1392 | if (cval->initialized && cval->dBmin >= cval->dBmax) { |
1393 | kcontrol->vd[0].access &= |
1394 | ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ | |
1395 | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK); |
1396 | snd_ctl_notify(card: cval->head.mixer->chip->card, |
1397 | SNDRV_CTL_EVENT_MASK_INFO, |
1398 | id: &kcontrol->id); |
1399 | } |
1400 | } |
1401 | uinfo->value.integer.min = 0; |
1402 | uinfo->value.integer.max = |
1403 | DIV_ROUND_UP(cval->max - cval->min, cval->res); |
1404 | } |
1405 | return 0; |
1406 | } |
1407 | |
1408 | /* get the current value from feature/mixer unit */ |
1409 | static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, |
1410 | struct snd_ctl_elem_value *ucontrol) |
1411 | { |
1412 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1413 | int c, cnt, val, err; |
1414 | |
1415 | ucontrol->value.integer.value[0] = cval->min; |
1416 | if (cval->cmask) { |
1417 | cnt = 0; |
1418 | for (c = 0; c < MAX_CHANNELS; c++) { |
1419 | if (!(cval->cmask & (1 << c))) |
1420 | continue; |
1421 | err = snd_usb_get_cur_mix_value(cval, channel: c + 1, index: cnt, value: &val); |
1422 | if (err < 0) |
1423 | return filter_error(cval, err); |
1424 | val = get_relative_value(cval, val); |
1425 | ucontrol->value.integer.value[cnt] = val; |
1426 | cnt++; |
1427 | } |
1428 | return 0; |
1429 | } else { |
1430 | /* master channel */ |
1431 | err = snd_usb_get_cur_mix_value(cval, channel: 0, index: 0, value: &val); |
1432 | if (err < 0) |
1433 | return filter_error(cval, err); |
1434 | val = get_relative_value(cval, val); |
1435 | ucontrol->value.integer.value[0] = val; |
1436 | } |
1437 | return 0; |
1438 | } |
1439 | |
1440 | /* put the current value to feature/mixer unit */ |
1441 | static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, |
1442 | struct snd_ctl_elem_value *ucontrol) |
1443 | { |
1444 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1445 | int c, cnt, val, oval, err; |
1446 | int changed = 0; |
1447 | |
1448 | if (cval->cmask) { |
1449 | cnt = 0; |
1450 | for (c = 0; c < MAX_CHANNELS; c++) { |
1451 | if (!(cval->cmask & (1 << c))) |
1452 | continue; |
1453 | err = snd_usb_get_cur_mix_value(cval, channel: c + 1, index: cnt, value: &oval); |
1454 | if (err < 0) |
1455 | return filter_error(cval, err); |
1456 | val = ucontrol->value.integer.value[cnt]; |
1457 | val = get_abs_value(cval, val); |
1458 | if (oval != val) { |
1459 | snd_usb_set_cur_mix_value(cval, channel: c + 1, index: cnt, value: val); |
1460 | changed = 1; |
1461 | } |
1462 | cnt++; |
1463 | } |
1464 | } else { |
1465 | /* master channel */ |
1466 | err = snd_usb_get_cur_mix_value(cval, channel: 0, index: 0, value: &oval); |
1467 | if (err < 0) |
1468 | return filter_error(cval, err); |
1469 | val = ucontrol->value.integer.value[0]; |
1470 | val = get_abs_value(cval, val); |
1471 | if (val != oval) { |
1472 | snd_usb_set_cur_mix_value(cval, channel: 0, index: 0, value: val); |
1473 | changed = 1; |
1474 | } |
1475 | } |
1476 | return changed; |
1477 | } |
1478 | |
1479 | /* get the boolean value from the master channel of a UAC control */ |
1480 | static int mixer_ctl_master_bool_get(struct snd_kcontrol *kcontrol, |
1481 | struct snd_ctl_elem_value *ucontrol) |
1482 | { |
1483 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1484 | int val, err; |
1485 | |
1486 | err = snd_usb_get_cur_mix_value(cval, channel: 0, index: 0, value: &val); |
1487 | if (err < 0) |
1488 | return filter_error(cval, err); |
1489 | val = (val != 0); |
1490 | ucontrol->value.integer.value[0] = val; |
1491 | return 0; |
1492 | } |
1493 | |
1494 | static int get_connector_value(struct usb_mixer_elem_info *cval, |
1495 | char *name, int *val) |
1496 | { |
1497 | struct snd_usb_audio *chip = cval->head.mixer->chip; |
1498 | int idx = 0, validx, ret; |
1499 | |
1500 | validx = cval->control << 8 | 0; |
1501 | |
1502 | ret = snd_usb_lock_shutdown(chip) ? -EIO : 0; |
1503 | if (ret) |
1504 | goto error; |
1505 | |
1506 | idx = mixer_ctrl_intf(mixer: cval->head.mixer) | (cval->head.id << 8); |
1507 | if (cval->head.mixer->protocol == UAC_VERSION_2) { |
1508 | struct uac2_connectors_ctl_blk uac2_conn; |
1509 | |
1510 | ret = snd_usb_ctl_msg(dev: chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR, |
1511 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
1512 | value: validx, index: idx, data: &uac2_conn, size: sizeof(uac2_conn)); |
1513 | if (val) |
1514 | *val = !!uac2_conn.bNrChannels; |
1515 | } else { /* UAC_VERSION_3 */ |
1516 | struct uac3_insertion_ctl_blk uac3_conn; |
1517 | |
1518 | ret = snd_usb_ctl_msg(dev: chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR, |
1519 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
1520 | value: validx, index: idx, data: &uac3_conn, size: sizeof(uac3_conn)); |
1521 | if (val) |
1522 | *val = !!uac3_conn.bmConInserted; |
1523 | } |
1524 | |
1525 | snd_usb_unlock_shutdown(chip); |
1526 | |
1527 | if (ret < 0) { |
1528 | if (name && strstr(name, "Speaker" )) { |
1529 | if (val) |
1530 | *val = 1; |
1531 | return 0; |
1532 | } |
1533 | error: |
1534 | usb_audio_err(chip, |
1535 | "cannot get connectors status: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n" , |
1536 | UAC_GET_CUR, validx, idx, cval->val_type); |
1537 | |
1538 | if (val) |
1539 | *val = 0; |
1540 | |
1541 | return filter_error(cval, ret); |
1542 | } |
1543 | |
1544 | return ret; |
1545 | } |
1546 | |
1547 | /* get the connectors status and report it as boolean type */ |
1548 | static int mixer_ctl_connector_get(struct snd_kcontrol *kcontrol, |
1549 | struct snd_ctl_elem_value *ucontrol) |
1550 | { |
1551 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1552 | int ret, val; |
1553 | |
1554 | ret = get_connector_value(cval, name: kcontrol->id.name, val: &val); |
1555 | |
1556 | if (ret < 0) |
1557 | return ret; |
1558 | |
1559 | ucontrol->value.integer.value[0] = val; |
1560 | return 0; |
1561 | } |
1562 | |
1563 | static const struct snd_kcontrol_new usb_feature_unit_ctl = { |
1564 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1565 | .name = "" , /* will be filled later manually */ |
1566 | .info = mixer_ctl_feature_info, |
1567 | .get = mixer_ctl_feature_get, |
1568 | .put = mixer_ctl_feature_put, |
1569 | }; |
1570 | |
1571 | /* the read-only variant */ |
1572 | static const struct snd_kcontrol_new usb_feature_unit_ctl_ro = { |
1573 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1574 | .name = "" , /* will be filled later manually */ |
1575 | .info = mixer_ctl_feature_info, |
1576 | .get = mixer_ctl_feature_get, |
1577 | .put = NULL, |
1578 | }; |
1579 | |
1580 | /* |
1581 | * A control which shows the boolean value from reading a UAC control on |
1582 | * the master channel. |
1583 | */ |
1584 | static const struct snd_kcontrol_new usb_bool_master_control_ctl_ro = { |
1585 | .iface = SNDRV_CTL_ELEM_IFACE_CARD, |
1586 | .name = "" , /* will be filled later manually */ |
1587 | .access = SNDRV_CTL_ELEM_ACCESS_READ, |
1588 | .info = snd_ctl_boolean_mono_info, |
1589 | .get = mixer_ctl_master_bool_get, |
1590 | .put = NULL, |
1591 | }; |
1592 | |
1593 | static const struct snd_kcontrol_new usb_connector_ctl_ro = { |
1594 | .iface = SNDRV_CTL_ELEM_IFACE_CARD, |
1595 | .name = "" , /* will be filled later manually */ |
1596 | .access = SNDRV_CTL_ELEM_ACCESS_READ, |
1597 | .info = snd_ctl_boolean_mono_info, |
1598 | .get = mixer_ctl_connector_get, |
1599 | .put = NULL, |
1600 | }; |
1601 | |
1602 | /* |
1603 | * This symbol is exported in order to allow the mixer quirks to |
1604 | * hook up to the standard feature unit control mechanism |
1605 | */ |
1606 | const struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; |
1607 | |
1608 | /* |
1609 | * build a feature control |
1610 | */ |
1611 | static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str) |
1612 | { |
1613 | return strlcat(p: kctl->id.name, q: str, avail: sizeof(kctl->id.name)); |
1614 | } |
1615 | |
1616 | /* |
1617 | * A lot of headsets/headphones have a "Speaker" mixer. Make sure we |
1618 | * rename it to "Headphone". We determine if something is a headphone |
1619 | * similar to how udev determines form factor. |
1620 | */ |
1621 | static void check_no_speaker_on_headset(struct snd_kcontrol *kctl, |
1622 | struct snd_card *card) |
1623 | { |
1624 | static const char * const names_to_check[] = { |
1625 | "Headset" , "headset" , "Headphone" , "headphone" , NULL}; |
1626 | const char * const *s; |
1627 | bool found = false; |
1628 | |
1629 | if (strcmp("Speaker" , kctl->id.name)) |
1630 | return; |
1631 | |
1632 | for (s = names_to_check; *s; s++) |
1633 | if (strstr(card->shortname, *s)) { |
1634 | found = true; |
1635 | break; |
1636 | } |
1637 | |
1638 | if (!found) |
1639 | return; |
1640 | |
1641 | snd_ctl_rename(card, kctl, name: "Headphone" ); |
1642 | } |
1643 | |
1644 | static const struct usb_feature_control_info *get_feature_control_info(int control) |
1645 | { |
1646 | int i; |
1647 | |
1648 | for (i = 0; i < ARRAY_SIZE(audio_feature_info); ++i) { |
1649 | if (audio_feature_info[i].control == control) |
1650 | return &audio_feature_info[i]; |
1651 | } |
1652 | return NULL; |
1653 | } |
1654 | |
1655 | static void __build_feature_ctl(struct usb_mixer_interface *mixer, |
1656 | const struct usbmix_name_map *imap, |
1657 | unsigned int ctl_mask, int control, |
1658 | struct usb_audio_term *iterm, |
1659 | struct usb_audio_term *oterm, |
1660 | int unitid, int nameid, int readonly_mask) |
1661 | { |
1662 | const struct usb_feature_control_info *ctl_info; |
1663 | unsigned int len = 0; |
1664 | int mapped_name = 0; |
1665 | struct snd_kcontrol *kctl; |
1666 | struct usb_mixer_elem_info *cval; |
1667 | const struct usbmix_name_map *map; |
1668 | unsigned int range; |
1669 | |
1670 | if (control == UAC_FU_GRAPHIC_EQUALIZER) { |
1671 | /* FIXME: not supported yet */ |
1672 | return; |
1673 | } |
1674 | |
1675 | map = find_map(p: imap, unitid, control); |
1676 | if (check_ignored_ctl(p: map)) |
1677 | return; |
1678 | |
1679 | cval = kzalloc(size: sizeof(*cval), GFP_KERNEL); |
1680 | if (!cval) |
1681 | return; |
1682 | snd_usb_mixer_elem_init_std(list: &cval->head, mixer, unitid); |
1683 | cval->control = control; |
1684 | cval->cmask = ctl_mask; |
1685 | |
1686 | ctl_info = get_feature_control_info(control); |
1687 | if (!ctl_info) { |
1688 | usb_mixer_elem_info_free(cval); |
1689 | return; |
1690 | } |
1691 | if (mixer->protocol == UAC_VERSION_1) |
1692 | cval->val_type = ctl_info->type; |
1693 | else /* UAC_VERSION_2 */ |
1694 | cval->val_type = ctl_info->type_uac2 >= 0 ? |
1695 | ctl_info->type_uac2 : ctl_info->type; |
1696 | |
1697 | if (ctl_mask == 0) { |
1698 | cval->channels = 1; /* master channel */ |
1699 | cval->master_readonly = readonly_mask; |
1700 | } else { |
1701 | int i, c = 0; |
1702 | for (i = 0; i < 16; i++) |
1703 | if (ctl_mask & (1 << i)) |
1704 | c++; |
1705 | cval->channels = c; |
1706 | cval->ch_readonly = readonly_mask; |
1707 | } |
1708 | |
1709 | /* |
1710 | * If all channels in the mask are marked read-only, make the control |
1711 | * read-only. snd_usb_set_cur_mix_value() will check the mask again and won't |
1712 | * issue write commands to read-only channels. |
1713 | */ |
1714 | if (cval->channels == readonly_mask) |
1715 | kctl = snd_ctl_new1(kcontrolnew: &usb_feature_unit_ctl_ro, private_data: cval); |
1716 | else |
1717 | kctl = snd_ctl_new1(kcontrolnew: &usb_feature_unit_ctl, private_data: cval); |
1718 | |
1719 | if (!kctl) { |
1720 | usb_audio_err(mixer->chip, "cannot malloc kcontrol\n" ); |
1721 | usb_mixer_elem_info_free(cval); |
1722 | return; |
1723 | } |
1724 | kctl->private_free = snd_usb_mixer_elem_free; |
1725 | |
1726 | len = check_mapped_name(p: map, buf: kctl->id.name, buflen: sizeof(kctl->id.name)); |
1727 | mapped_name = len != 0; |
1728 | if (!len && nameid) |
1729 | len = snd_usb_copy_string_desc(chip: mixer->chip, index: nameid, |
1730 | buf: kctl->id.name, maxlen: sizeof(kctl->id.name)); |
1731 | |
1732 | switch (control) { |
1733 | case UAC_FU_MUTE: |
1734 | case UAC_FU_VOLUME: |
1735 | /* |
1736 | * determine the control name. the rule is: |
1737 | * - if a name id is given in descriptor, use it. |
1738 | * - if the connected input can be determined, then use the name |
1739 | * of terminal type. |
1740 | * - if the connected output can be determined, use it. |
1741 | * - otherwise, anonymous name. |
1742 | */ |
1743 | if (!len) { |
1744 | if (iterm) |
1745 | len = get_term_name(chip: mixer->chip, iterm, |
1746 | name: kctl->id.name, |
1747 | maxlen: sizeof(kctl->id.name), term_only: 1); |
1748 | if (!len && oterm) |
1749 | len = get_term_name(chip: mixer->chip, iterm: oterm, |
1750 | name: kctl->id.name, |
1751 | maxlen: sizeof(kctl->id.name), term_only: 1); |
1752 | if (!len) |
1753 | snprintf(buf: kctl->id.name, size: sizeof(kctl->id.name), |
1754 | fmt: "Feature %d" , unitid); |
1755 | } |
1756 | |
1757 | if (!mapped_name) |
1758 | check_no_speaker_on_headset(kctl, card: mixer->chip->card); |
1759 | |
1760 | /* |
1761 | * determine the stream direction: |
1762 | * if the connected output is USB stream, then it's likely a |
1763 | * capture stream. otherwise it should be playback (hopefully :) |
1764 | */ |
1765 | if (!mapped_name && oterm && !(oterm->type >> 16)) { |
1766 | if ((oterm->type & 0xff00) == 0x0100) |
1767 | append_ctl_name(kctl, str: " Capture" ); |
1768 | else |
1769 | append_ctl_name(kctl, str: " Playback" ); |
1770 | } |
1771 | append_ctl_name(kctl, str: control == UAC_FU_MUTE ? |
1772 | " Switch" : " Volume" ); |
1773 | break; |
1774 | default: |
1775 | if (!len) |
1776 | strscpy(p: kctl->id.name, q: audio_feature_info[control-1].name, |
1777 | size: sizeof(kctl->id.name)); |
1778 | break; |
1779 | } |
1780 | |
1781 | /* get min/max values */ |
1782 | get_min_max_with_quirks(cval, default_min: 0, kctl); |
1783 | |
1784 | /* skip a bogus volume range */ |
1785 | if (cval->max <= cval->min) { |
1786 | usb_audio_dbg(mixer->chip, |
1787 | "[%d] FU [%s] skipped due to invalid volume\n" , |
1788 | cval->head.id, kctl->id.name); |
1789 | snd_ctl_free_one(kcontrol: kctl); |
1790 | return; |
1791 | } |
1792 | |
1793 | |
1794 | if (control == UAC_FU_VOLUME) { |
1795 | check_mapped_dB(p: map, cval); |
1796 | if (cval->dBmin < cval->dBmax || !cval->initialized) { |
1797 | kctl->tlv.c = snd_usb_mixer_vol_tlv; |
1798 | kctl->vd[0].access |= |
1799 | SNDRV_CTL_ELEM_ACCESS_TLV_READ | |
1800 | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; |
1801 | } |
1802 | } |
1803 | |
1804 | snd_usb_mixer_fu_apply_quirk(mixer, cval, unitid, kctl); |
1805 | |
1806 | range = (cval->max - cval->min) / cval->res; |
1807 | /* |
1808 | * Are there devices with volume range more than 255? I use a bit more |
1809 | * to be sure. 384 is a resolution magic number found on Logitech |
1810 | * devices. It will definitively catch all buggy Logitech devices. |
1811 | */ |
1812 | if (range > 384) { |
1813 | usb_audio_warn(mixer->chip, |
1814 | "Warning! Unlikely big volume range (=%u), cval->res is probably wrong." , |
1815 | range); |
1816 | usb_audio_warn(mixer->chip, |
1817 | "[%d] FU [%s] ch = %d, val = %d/%d/%d" , |
1818 | cval->head.id, kctl->id.name, cval->channels, |
1819 | cval->min, cval->max, cval->res); |
1820 | } |
1821 | |
1822 | usb_audio_dbg(mixer->chip, "[%d] FU [%s] ch = %d, val = %d/%d/%d\n" , |
1823 | cval->head.id, kctl->id.name, cval->channels, |
1824 | cval->min, cval->max, cval->res); |
1825 | snd_usb_mixer_add_control(&cval->head, kctl); |
1826 | } |
1827 | |
1828 | static void build_feature_ctl(struct mixer_build *state, void *raw_desc, |
1829 | unsigned int ctl_mask, int control, |
1830 | struct usb_audio_term *iterm, int unitid, |
1831 | int readonly_mask) |
1832 | { |
1833 | struct uac_feature_unit_descriptor *desc = raw_desc; |
1834 | int nameid = uac_feature_unit_iFeature(desc); |
1835 | |
1836 | __build_feature_ctl(mixer: state->mixer, imap: state->map, ctl_mask, control, |
1837 | iterm, oterm: &state->oterm, unitid, nameid, readonly_mask); |
1838 | } |
1839 | |
1840 | static void build_feature_ctl_badd(struct usb_mixer_interface *mixer, |
1841 | unsigned int ctl_mask, int control, int unitid, |
1842 | const struct usbmix_name_map *badd_map) |
1843 | { |
1844 | __build_feature_ctl(mixer, imap: badd_map, ctl_mask, control, |
1845 | NULL, NULL, unitid, nameid: 0, readonly_mask: 0); |
1846 | } |
1847 | |
1848 | static void get_connector_control_name(struct usb_mixer_interface *mixer, |
1849 | struct usb_audio_term *term, |
1850 | bool is_input, char *name, int name_size) |
1851 | { |
1852 | int name_len = get_term_name(chip: mixer->chip, iterm: term, name, maxlen: name_size, term_only: 0); |
1853 | |
1854 | if (name_len == 0) |
1855 | strscpy(p: name, q: "Unknown" , size: name_size); |
1856 | |
1857 | /* |
1858 | * sound/core/ctljack.c has a convention of naming jack controls |
1859 | * by ending in " Jack". Make it slightly more useful by |
1860 | * indicating Input or Output after the terminal name. |
1861 | */ |
1862 | if (is_input) |
1863 | strlcat(p: name, q: " - Input Jack" , avail: name_size); |
1864 | else |
1865 | strlcat(p: name, q: " - Output Jack" , avail: name_size); |
1866 | } |
1867 | |
1868 | /* get connector value to "wake up" the USB audio */ |
1869 | static int connector_mixer_resume(struct usb_mixer_elem_list *list) |
1870 | { |
1871 | struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list); |
1872 | |
1873 | get_connector_value(cval, NULL, NULL); |
1874 | return 0; |
1875 | } |
1876 | |
1877 | /* Build a mixer control for a UAC connector control (jack-detect) */ |
1878 | static void build_connector_control(struct usb_mixer_interface *mixer, |
1879 | const struct usbmix_name_map *imap, |
1880 | struct usb_audio_term *term, bool is_input) |
1881 | { |
1882 | struct snd_kcontrol *kctl; |
1883 | struct usb_mixer_elem_info *cval; |
1884 | const struct usbmix_name_map *map; |
1885 | |
1886 | map = find_map(p: imap, unitid: term->id, control: 0); |
1887 | if (check_ignored_ctl(p: map)) |
1888 | return; |
1889 | |
1890 | cval = kzalloc(size: sizeof(*cval), GFP_KERNEL); |
1891 | if (!cval) |
1892 | return; |
1893 | snd_usb_mixer_elem_init_std(list: &cval->head, mixer, unitid: term->id); |
1894 | |
1895 | /* set up a specific resume callback */ |
1896 | cval->head.resume = connector_mixer_resume; |
1897 | |
1898 | /* |
1899 | * UAC2: The first byte from reading the UAC2_TE_CONNECTOR control returns the |
1900 | * number of channels connected. |
1901 | * |
1902 | * UAC3: The first byte specifies size of bitmap for the inserted controls. The |
1903 | * following byte(s) specifies which connectors are inserted. |
1904 | * |
1905 | * This boolean ctl will simply report if any channels are connected |
1906 | * or not. |
1907 | */ |
1908 | if (mixer->protocol == UAC_VERSION_2) |
1909 | cval->control = UAC2_TE_CONNECTOR; |
1910 | else /* UAC_VERSION_3 */ |
1911 | cval->control = UAC3_TE_INSERTION; |
1912 | |
1913 | cval->val_type = USB_MIXER_BOOLEAN; |
1914 | cval->channels = 1; /* report true if any channel is connected */ |
1915 | cval->min = 0; |
1916 | cval->max = 1; |
1917 | kctl = snd_ctl_new1(kcontrolnew: &usb_connector_ctl_ro, private_data: cval); |
1918 | if (!kctl) { |
1919 | usb_audio_err(mixer->chip, "cannot malloc kcontrol\n" ); |
1920 | usb_mixer_elem_info_free(cval); |
1921 | return; |
1922 | } |
1923 | |
1924 | if (check_mapped_name(p: map, buf: kctl->id.name, buflen: sizeof(kctl->id.name))) |
1925 | strlcat(p: kctl->id.name, q: " Jack" , avail: sizeof(kctl->id.name)); |
1926 | else |
1927 | get_connector_control_name(mixer, term, is_input, name: kctl->id.name, |
1928 | name_size: sizeof(kctl->id.name)); |
1929 | kctl->private_free = snd_usb_mixer_elem_free; |
1930 | snd_usb_mixer_add_control(&cval->head, kctl); |
1931 | } |
1932 | |
1933 | static int parse_clock_source_unit(struct mixer_build *state, int unitid, |
1934 | void *_ftr) |
1935 | { |
1936 | struct uac_clock_source_descriptor *hdr = _ftr; |
1937 | struct usb_mixer_elem_info *cval; |
1938 | struct snd_kcontrol *kctl; |
1939 | int ret; |
1940 | |
1941 | if (state->mixer->protocol != UAC_VERSION_2) |
1942 | return -EINVAL; |
1943 | |
1944 | /* |
1945 | * The only property of this unit we are interested in is the |
1946 | * clock source validity. If that isn't readable, just bail out. |
1947 | */ |
1948 | if (!uac_v2v3_control_is_readable(bmControls: hdr->bmControls, |
1949 | UAC2_CS_CONTROL_CLOCK_VALID)) |
1950 | return 0; |
1951 | |
1952 | cval = kzalloc(size: sizeof(*cval), GFP_KERNEL); |
1953 | if (!cval) |
1954 | return -ENOMEM; |
1955 | |
1956 | snd_usb_mixer_elem_init_std(list: &cval->head, mixer: state->mixer, unitid: hdr->bClockID); |
1957 | |
1958 | cval->min = 0; |
1959 | cval->max = 1; |
1960 | cval->channels = 1; |
1961 | cval->val_type = USB_MIXER_BOOLEAN; |
1962 | cval->control = UAC2_CS_CONTROL_CLOCK_VALID; |
1963 | |
1964 | cval->master_readonly = 1; |
1965 | /* From UAC2 5.2.5.1.2 "Only the get request is supported." */ |
1966 | kctl = snd_ctl_new1(kcontrolnew: &usb_bool_master_control_ctl_ro, private_data: cval); |
1967 | |
1968 | if (!kctl) { |
1969 | usb_mixer_elem_info_free(cval); |
1970 | return -ENOMEM; |
1971 | } |
1972 | |
1973 | kctl->private_free = snd_usb_mixer_elem_free; |
1974 | ret = snd_usb_copy_string_desc(chip: state->chip, index: hdr->iClockSource, |
1975 | buf: kctl->id.name, maxlen: sizeof(kctl->id.name)); |
1976 | if (ret > 0) |
1977 | append_ctl_name(kctl, str: " Validity" ); |
1978 | else |
1979 | snprintf(buf: kctl->id.name, size: sizeof(kctl->id.name), |
1980 | fmt: "Clock Source %d Validity" , hdr->bClockID); |
1981 | |
1982 | return snd_usb_mixer_add_control(&cval->head, kctl); |
1983 | } |
1984 | |
1985 | /* |
1986 | * parse a feature unit |
1987 | * |
1988 | * most of controls are defined here. |
1989 | */ |
1990 | static int parse_audio_feature_unit(struct mixer_build *state, int unitid, |
1991 | void *_ftr) |
1992 | { |
1993 | int channels, i, j; |
1994 | struct usb_audio_term iterm; |
1995 | unsigned int master_bits; |
1996 | int err, csize; |
1997 | struct uac_feature_unit_descriptor *hdr = _ftr; |
1998 | __u8 *bmaControls; |
1999 | |
2000 | if (state->mixer->protocol == UAC_VERSION_1) { |
2001 | csize = hdr->bControlSize; |
2002 | channels = (hdr->bLength - 7) / csize - 1; |
2003 | bmaControls = hdr->bmaControls; |
2004 | } else if (state->mixer->protocol == UAC_VERSION_2) { |
2005 | struct uac2_feature_unit_descriptor *ftr = _ftr; |
2006 | csize = 4; |
2007 | channels = (hdr->bLength - 6) / 4 - 1; |
2008 | bmaControls = ftr->bmaControls; |
2009 | } else { /* UAC_VERSION_3 */ |
2010 | struct uac3_feature_unit_descriptor *ftr = _ftr; |
2011 | |
2012 | csize = 4; |
2013 | channels = (ftr->bLength - 7) / 4 - 1; |
2014 | bmaControls = ftr->bmaControls; |
2015 | } |
2016 | |
2017 | /* parse the source unit */ |
2018 | err = parse_audio_unit(state, unitid: hdr->bSourceID); |
2019 | if (err < 0) |
2020 | return err; |
2021 | |
2022 | /* determine the input source type and name */ |
2023 | err = check_input_term(state, id: hdr->bSourceID, term: &iterm); |
2024 | if (err < 0) |
2025 | return err; |
2026 | |
2027 | master_bits = snd_usb_combine_bytes(bytes: bmaControls, size: csize); |
2028 | /* master configuration quirks */ |
2029 | switch (state->chip->usb_id) { |
2030 | case USB_ID(0x08bb, 0x2702): |
2031 | usb_audio_info(state->chip, |
2032 | "usbmixer: master volume quirk for PCM2702 chip\n" ); |
2033 | /* disable non-functional volume control */ |
2034 | master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); |
2035 | break; |
2036 | case USB_ID(0x1130, 0xf211): |
2037 | usb_audio_info(state->chip, |
2038 | "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n" ); |
2039 | /* disable non-functional volume control */ |
2040 | channels = 0; |
2041 | break; |
2042 | |
2043 | } |
2044 | |
2045 | if (state->mixer->protocol == UAC_VERSION_1) { |
2046 | /* check all control types */ |
2047 | for (i = 0; i < 10; i++) { |
2048 | unsigned int ch_bits = 0; |
2049 | int control = audio_feature_info[i].control; |
2050 | |
2051 | for (j = 0; j < channels; j++) { |
2052 | unsigned int mask; |
2053 | |
2054 | mask = snd_usb_combine_bytes(bytes: bmaControls + |
2055 | csize * (j+1), size: csize); |
2056 | if (mask & (1 << i)) |
2057 | ch_bits |= (1 << j); |
2058 | } |
2059 | /* audio class v1 controls are never read-only */ |
2060 | |
2061 | /* |
2062 | * The first channel must be set |
2063 | * (for ease of programming). |
2064 | */ |
2065 | if (ch_bits & 1) |
2066 | build_feature_ctl(state, raw_desc: _ftr, ctl_mask: ch_bits, control, |
2067 | iterm: &iterm, unitid, readonly_mask: 0); |
2068 | if (master_bits & (1 << i)) |
2069 | build_feature_ctl(state, raw_desc: _ftr, ctl_mask: 0, control, |
2070 | iterm: &iterm, unitid, readonly_mask: 0); |
2071 | } |
2072 | } else { /* UAC_VERSION_2/3 */ |
2073 | for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) { |
2074 | unsigned int ch_bits = 0; |
2075 | unsigned int ch_read_only = 0; |
2076 | int control = audio_feature_info[i].control; |
2077 | |
2078 | for (j = 0; j < channels; j++) { |
2079 | unsigned int mask; |
2080 | |
2081 | mask = snd_usb_combine_bytes(bytes: bmaControls + |
2082 | csize * (j+1), size: csize); |
2083 | if (uac_v2v3_control_is_readable(bmControls: mask, control)) { |
2084 | ch_bits |= (1 << j); |
2085 | if (!uac_v2v3_control_is_writeable(bmControls: mask, control)) |
2086 | ch_read_only |= (1 << j); |
2087 | } |
2088 | } |
2089 | |
2090 | /* |
2091 | * NOTE: build_feature_ctl() will mark the control |
2092 | * read-only if all channels are marked read-only in |
2093 | * the descriptors. Otherwise, the control will be |
2094 | * reported as writeable, but the driver will not |
2095 | * actually issue a write command for read-only |
2096 | * channels. |
2097 | */ |
2098 | |
2099 | /* |
2100 | * The first channel must be set |
2101 | * (for ease of programming). |
2102 | */ |
2103 | if (ch_bits & 1) |
2104 | build_feature_ctl(state, raw_desc: _ftr, ctl_mask: ch_bits, control, |
2105 | iterm: &iterm, unitid, readonly_mask: ch_read_only); |
2106 | if (uac_v2v3_control_is_readable(bmControls: master_bits, control)) |
2107 | build_feature_ctl(state, raw_desc: _ftr, ctl_mask: 0, control, |
2108 | iterm: &iterm, unitid, |
2109 | readonly_mask: !uac_v2v3_control_is_writeable(bmControls: master_bits, |
2110 | control)); |
2111 | } |
2112 | } |
2113 | |
2114 | return 0; |
2115 | } |
2116 | |
2117 | /* |
2118 | * Mixer Unit |
2119 | */ |
2120 | |
2121 | /* check whether the given in/out overflows bmMixerControls matrix */ |
2122 | static bool mixer_bitmap_overflow(struct uac_mixer_unit_descriptor *desc, |
2123 | int protocol, int num_ins, int num_outs) |
2124 | { |
2125 | u8 *hdr = (u8 *)desc; |
2126 | u8 *c = uac_mixer_unit_bmControls(desc, protocol); |
2127 | size_t rest; /* remaining bytes after bmMixerControls */ |
2128 | |
2129 | switch (protocol) { |
2130 | case UAC_VERSION_1: |
2131 | default: |
2132 | rest = 1; /* iMixer */ |
2133 | break; |
2134 | case UAC_VERSION_2: |
2135 | rest = 2; /* bmControls + iMixer */ |
2136 | break; |
2137 | case UAC_VERSION_3: |
2138 | rest = 6; /* bmControls + wMixerDescrStr */ |
2139 | break; |
2140 | } |
2141 | |
2142 | /* overflow? */ |
2143 | return c + (num_ins * num_outs + 7) / 8 + rest > hdr + hdr[0]; |
2144 | } |
2145 | |
2146 | /* |
2147 | * build a mixer unit control |
2148 | * |
2149 | * the callbacks are identical with feature unit. |
2150 | * input channel number (zero based) is given in control field instead. |
2151 | */ |
2152 | static void build_mixer_unit_ctl(struct mixer_build *state, |
2153 | struct uac_mixer_unit_descriptor *desc, |
2154 | int in_pin, int in_ch, int num_outs, |
2155 | int unitid, struct usb_audio_term *iterm) |
2156 | { |
2157 | struct usb_mixer_elem_info *cval; |
2158 | unsigned int i, len; |
2159 | struct snd_kcontrol *kctl; |
2160 | const struct usbmix_name_map *map; |
2161 | |
2162 | map = find_map(p: state->map, unitid, control: 0); |
2163 | if (check_ignored_ctl(p: map)) |
2164 | return; |
2165 | |
2166 | cval = kzalloc(size: sizeof(*cval), GFP_KERNEL); |
2167 | if (!cval) |
2168 | return; |
2169 | |
2170 | snd_usb_mixer_elem_init_std(list: &cval->head, mixer: state->mixer, unitid); |
2171 | cval->control = in_ch + 1; /* based on 1 */ |
2172 | cval->val_type = USB_MIXER_S16; |
2173 | for (i = 0; i < num_outs; i++) { |
2174 | __u8 *c = uac_mixer_unit_bmControls(desc, protocol: state->mixer->protocol); |
2175 | |
2176 | if (check_matrix_bitmap(bmap: c, ich: in_ch, och: i, num_outs)) { |
2177 | cval->cmask |= (1 << i); |
2178 | cval->channels++; |
2179 | } |
2180 | } |
2181 | |
2182 | /* get min/max values */ |
2183 | get_min_max(cval, 0); |
2184 | |
2185 | kctl = snd_ctl_new1(kcontrolnew: &usb_feature_unit_ctl, private_data: cval); |
2186 | if (!kctl) { |
2187 | usb_audio_err(state->chip, "cannot malloc kcontrol\n" ); |
2188 | usb_mixer_elem_info_free(cval); |
2189 | return; |
2190 | } |
2191 | kctl->private_free = snd_usb_mixer_elem_free; |
2192 | |
2193 | len = check_mapped_name(p: map, buf: kctl->id.name, buflen: sizeof(kctl->id.name)); |
2194 | if (!len) |
2195 | len = get_term_name(chip: state->chip, iterm, name: kctl->id.name, |
2196 | maxlen: sizeof(kctl->id.name), term_only: 0); |
2197 | if (!len) |
2198 | len = sprintf(buf: kctl->id.name, fmt: "Mixer Source %d" , in_ch + 1); |
2199 | append_ctl_name(kctl, str: " Volume" ); |
2200 | |
2201 | usb_audio_dbg(state->chip, "[%d] MU [%s] ch = %d, val = %d/%d\n" , |
2202 | cval->head.id, kctl->id.name, cval->channels, cval->min, cval->max); |
2203 | snd_usb_mixer_add_control(&cval->head, kctl); |
2204 | } |
2205 | |
2206 | static int parse_audio_input_terminal(struct mixer_build *state, int unitid, |
2207 | void *raw_desc) |
2208 | { |
2209 | struct usb_audio_term iterm; |
2210 | unsigned int control, bmctls, term_id; |
2211 | |
2212 | if (state->mixer->protocol == UAC_VERSION_2) { |
2213 | struct uac2_input_terminal_descriptor *d_v2 = raw_desc; |
2214 | control = UAC2_TE_CONNECTOR; |
2215 | term_id = d_v2->bTerminalID; |
2216 | bmctls = le16_to_cpu(d_v2->bmControls); |
2217 | } else if (state->mixer->protocol == UAC_VERSION_3) { |
2218 | struct uac3_input_terminal_descriptor *d_v3 = raw_desc; |
2219 | control = UAC3_TE_INSERTION; |
2220 | term_id = d_v3->bTerminalID; |
2221 | bmctls = le32_to_cpu(d_v3->bmControls); |
2222 | } else { |
2223 | return 0; /* UAC1. No Insertion control */ |
2224 | } |
2225 | |
2226 | check_input_term(state, id: term_id, term: &iterm); |
2227 | |
2228 | /* Check for jack detection. */ |
2229 | if ((iterm.type & 0xff00) != 0x0100 && |
2230 | uac_v2v3_control_is_readable(bmControls: bmctls, control)) |
2231 | build_connector_control(mixer: state->mixer, imap: state->map, term: &iterm, is_input: true); |
2232 | |
2233 | return 0; |
2234 | } |
2235 | |
2236 | /* |
2237 | * parse a mixer unit |
2238 | */ |
2239 | static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, |
2240 | void *raw_desc) |
2241 | { |
2242 | struct uac_mixer_unit_descriptor *desc = raw_desc; |
2243 | struct usb_audio_term iterm; |
2244 | int input_pins, num_ins, num_outs; |
2245 | int pin, ich, err; |
2246 | |
2247 | err = uac_mixer_unit_get_channels(state, desc); |
2248 | if (err < 0) { |
2249 | usb_audio_err(state->chip, |
2250 | "invalid MIXER UNIT descriptor %d\n" , |
2251 | unitid); |
2252 | return err; |
2253 | } |
2254 | |
2255 | num_outs = err; |
2256 | input_pins = desc->bNrInPins; |
2257 | |
2258 | num_ins = 0; |
2259 | ich = 0; |
2260 | for (pin = 0; pin < input_pins; pin++) { |
2261 | err = parse_audio_unit(state, unitid: desc->baSourceID[pin]); |
2262 | if (err < 0) |
2263 | continue; |
2264 | /* no bmControls field (e.g. Maya44) -> ignore */ |
2265 | if (!num_outs) |
2266 | continue; |
2267 | err = check_input_term(state, id: desc->baSourceID[pin], term: &iterm); |
2268 | if (err < 0) |
2269 | return err; |
2270 | num_ins += iterm.channels; |
2271 | if (mixer_bitmap_overflow(desc, protocol: state->mixer->protocol, |
2272 | num_ins, num_outs)) |
2273 | break; |
2274 | for (; ich < num_ins; ich++) { |
2275 | int och, ich_has_controls = 0; |
2276 | |
2277 | for (och = 0; och < num_outs; och++) { |
2278 | __u8 *c = uac_mixer_unit_bmControls(desc, |
2279 | protocol: state->mixer->protocol); |
2280 | |
2281 | if (check_matrix_bitmap(bmap: c, ich, och, num_outs)) { |
2282 | ich_has_controls = 1; |
2283 | break; |
2284 | } |
2285 | } |
2286 | if (ich_has_controls) |
2287 | build_mixer_unit_ctl(state, desc, in_pin: pin, in_ch: ich, num_outs, |
2288 | unitid, iterm: &iterm); |
2289 | } |
2290 | } |
2291 | return 0; |
2292 | } |
2293 | |
2294 | /* |
2295 | * Processing Unit / Extension Unit |
2296 | */ |
2297 | |
2298 | /* get callback for processing/extension unit */ |
2299 | static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, |
2300 | struct snd_ctl_elem_value *ucontrol) |
2301 | { |
2302 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
2303 | int err, val; |
2304 | |
2305 | err = get_cur_ctl_value(cval, validx: cval->control << 8, value: &val); |
2306 | if (err < 0) { |
2307 | ucontrol->value.integer.value[0] = cval->min; |
2308 | return filter_error(cval, err); |
2309 | } |
2310 | val = get_relative_value(cval, val); |
2311 | ucontrol->value.integer.value[0] = val; |
2312 | return 0; |
2313 | } |
2314 | |
2315 | /* put callback for processing/extension unit */ |
2316 | static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, |
2317 | struct snd_ctl_elem_value *ucontrol) |
2318 | { |
2319 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
2320 | int val, oval, err; |
2321 | |
2322 | err = get_cur_ctl_value(cval, validx: cval->control << 8, value: &oval); |
2323 | if (err < 0) |
2324 | return filter_error(cval, err); |
2325 | val = ucontrol->value.integer.value[0]; |
2326 | val = get_abs_value(cval, val); |
2327 | if (val != oval) { |
2328 | set_cur_ctl_value(cval, validx: cval->control << 8, value: val); |
2329 | return 1; |
2330 | } |
2331 | return 0; |
2332 | } |
2333 | |
2334 | /* alsa control interface for processing/extension unit */ |
2335 | static const struct snd_kcontrol_new mixer_procunit_ctl = { |
2336 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
2337 | .name = "" , /* will be filled later */ |
2338 | .info = mixer_ctl_feature_info, |
2339 | .get = mixer_ctl_procunit_get, |
2340 | .put = mixer_ctl_procunit_put, |
2341 | }; |
2342 | |
2343 | /* |
2344 | * predefined data for processing units |
2345 | */ |
2346 | struct procunit_value_info { |
2347 | int control; |
2348 | const char *suffix; |
2349 | int val_type; |
2350 | int min_value; |
2351 | }; |
2352 | |
2353 | struct procunit_info { |
2354 | int type; |
2355 | char *name; |
2356 | const struct procunit_value_info *values; |
2357 | }; |
2358 | |
2359 | static const struct procunit_value_info undefined_proc_info[] = { |
2360 | { 0x00, "Control Undefined" , 0 }, |
2361 | { 0 } |
2362 | }; |
2363 | |
2364 | static const struct procunit_value_info updown_proc_info[] = { |
2365 | { UAC_UD_ENABLE, "Switch" , USB_MIXER_BOOLEAN }, |
2366 | { UAC_UD_MODE_SELECT, "Mode Select" , USB_MIXER_U8, 1 }, |
2367 | { 0 } |
2368 | }; |
2369 | static const struct procunit_value_info prologic_proc_info[] = { |
2370 | { UAC_DP_ENABLE, "Switch" , USB_MIXER_BOOLEAN }, |
2371 | { UAC_DP_MODE_SELECT, "Mode Select" , USB_MIXER_U8, 1 }, |
2372 | { 0 } |
2373 | }; |
2374 | static const struct procunit_value_info threed_enh_proc_info[] = { |
2375 | { UAC_3D_ENABLE, "Switch" , USB_MIXER_BOOLEAN }, |
2376 | { UAC_3D_SPACE, "Spaciousness" , USB_MIXER_U8 }, |
2377 | { 0 } |
2378 | }; |
2379 | static const struct procunit_value_info reverb_proc_info[] = { |
2380 | { UAC_REVERB_ENABLE, "Switch" , USB_MIXER_BOOLEAN }, |
2381 | { UAC_REVERB_LEVEL, "Level" , USB_MIXER_U8 }, |
2382 | { UAC_REVERB_TIME, "Time" , USB_MIXER_U16 }, |
2383 | { UAC_REVERB_FEEDBACK, "Feedback" , USB_MIXER_U8 }, |
2384 | { 0 } |
2385 | }; |
2386 | static const struct procunit_value_info chorus_proc_info[] = { |
2387 | { UAC_CHORUS_ENABLE, "Switch" , USB_MIXER_BOOLEAN }, |
2388 | { UAC_CHORUS_LEVEL, "Level" , USB_MIXER_U8 }, |
2389 | { UAC_CHORUS_RATE, "Rate" , USB_MIXER_U16 }, |
2390 | { UAC_CHORUS_DEPTH, "Depth" , USB_MIXER_U16 }, |
2391 | { 0 } |
2392 | }; |
2393 | static const struct procunit_value_info dcr_proc_info[] = { |
2394 | { UAC_DCR_ENABLE, "Switch" , USB_MIXER_BOOLEAN }, |
2395 | { UAC_DCR_RATE, "Ratio" , USB_MIXER_U16 }, |
2396 | { UAC_DCR_MAXAMPL, "Max Amp" , USB_MIXER_S16 }, |
2397 | { UAC_DCR_THRESHOLD, "Threshold" , USB_MIXER_S16 }, |
2398 | { UAC_DCR_ATTACK_TIME, "Attack Time" , USB_MIXER_U16 }, |
2399 | { UAC_DCR_RELEASE_TIME, "Release Time" , USB_MIXER_U16 }, |
2400 | { 0 } |
2401 | }; |
2402 | |
2403 | static const struct procunit_info procunits[] = { |
2404 | { UAC_PROCESS_UP_DOWNMIX, "Up Down" , updown_proc_info }, |
2405 | { UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic" , prologic_proc_info }, |
2406 | { UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender" , threed_enh_proc_info }, |
2407 | { UAC_PROCESS_REVERB, "Reverb" , reverb_proc_info }, |
2408 | { UAC_PROCESS_CHORUS, "Chorus" , chorus_proc_info }, |
2409 | { UAC_PROCESS_DYN_RANGE_COMP, "DCR" , dcr_proc_info }, |
2410 | { 0 }, |
2411 | }; |
2412 | |
2413 | static const struct procunit_value_info uac3_updown_proc_info[] = { |
2414 | { UAC3_UD_MODE_SELECT, "Mode Select" , USB_MIXER_U8, 1 }, |
2415 | { 0 } |
2416 | }; |
2417 | static const struct procunit_value_info uac3_stereo_ext_proc_info[] = { |
2418 | { UAC3_EXT_WIDTH_CONTROL, "Width Control" , USB_MIXER_U8 }, |
2419 | { 0 } |
2420 | }; |
2421 | |
2422 | static const struct procunit_info uac3_procunits[] = { |
2423 | { UAC3_PROCESS_UP_DOWNMIX, "Up Down" , uac3_updown_proc_info }, |
2424 | { UAC3_PROCESS_STEREO_EXTENDER, "3D Stereo Extender" , uac3_stereo_ext_proc_info }, |
2425 | { UAC3_PROCESS_MULTI_FUNCTION, "Multi-Function" , undefined_proc_info }, |
2426 | { 0 }, |
2427 | }; |
2428 | |
2429 | /* |
2430 | * predefined data for extension units |
2431 | */ |
2432 | static const struct procunit_value_info clock_rate_xu_info[] = { |
2433 | { USB_XU_CLOCK_RATE_SELECTOR, "Selector" , USB_MIXER_U8, 0 }, |
2434 | { 0 } |
2435 | }; |
2436 | static const struct procunit_value_info clock_source_xu_info[] = { |
2437 | { USB_XU_CLOCK_SOURCE_SELECTOR, "External" , USB_MIXER_BOOLEAN }, |
2438 | { 0 } |
2439 | }; |
2440 | static const struct procunit_value_info spdif_format_xu_info[] = { |
2441 | { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3" , USB_MIXER_BOOLEAN }, |
2442 | { 0 } |
2443 | }; |
2444 | static const struct procunit_value_info soft_limit_xu_info[] = { |
2445 | { USB_XU_SOFT_LIMIT_SELECTOR, " " , USB_MIXER_BOOLEAN }, |
2446 | { 0 } |
2447 | }; |
2448 | static const struct procunit_info extunits[] = { |
2449 | { USB_XU_CLOCK_RATE, "Clock rate" , clock_rate_xu_info }, |
2450 | { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source" , clock_source_xu_info }, |
2451 | { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:" , spdif_format_xu_info }, |
2452 | { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit" , soft_limit_xu_info }, |
2453 | { 0 } |
2454 | }; |
2455 | |
2456 | /* |
2457 | * build a processing/extension unit |
2458 | */ |
2459 | static int build_audio_procunit(struct mixer_build *state, int unitid, |
2460 | void *raw_desc, const struct procunit_info *list, |
2461 | bool extension_unit) |
2462 | { |
2463 | struct uac_processing_unit_descriptor *desc = raw_desc; |
2464 | int num_ins; |
2465 | struct usb_mixer_elem_info *cval; |
2466 | struct snd_kcontrol *kctl; |
2467 | int i, err, nameid, type, len, val; |
2468 | const struct procunit_info *info; |
2469 | const struct procunit_value_info *valinfo; |
2470 | const struct usbmix_name_map *map; |
2471 | static const struct procunit_value_info default_value_info[] = { |
2472 | { 0x01, "Switch" , USB_MIXER_BOOLEAN }, |
2473 | { 0 } |
2474 | }; |
2475 | static const struct procunit_info default_info = { |
2476 | 0, NULL, default_value_info |
2477 | }; |
2478 | const char *name = extension_unit ? |
2479 | "Extension Unit" : "Processing Unit" ; |
2480 | |
2481 | num_ins = desc->bNrInPins; |
2482 | for (i = 0; i < num_ins; i++) { |
2483 | err = parse_audio_unit(state, unitid: desc->baSourceID[i]); |
2484 | if (err < 0) |
2485 | return err; |
2486 | } |
2487 | |
2488 | type = le16_to_cpu(desc->wProcessType); |
2489 | for (info = list; info && info->type; info++) |
2490 | if (info->type == type) |
2491 | break; |
2492 | if (!info || !info->type) |
2493 | info = &default_info; |
2494 | |
2495 | for (valinfo = info->values; valinfo->control; valinfo++) { |
2496 | __u8 *controls = uac_processing_unit_bmControls(desc, protocol: state->mixer->protocol); |
2497 | |
2498 | if (state->mixer->protocol == UAC_VERSION_1) { |
2499 | if (!(controls[valinfo->control / 8] & |
2500 | (1 << ((valinfo->control % 8) - 1)))) |
2501 | continue; |
2502 | } else { /* UAC_VERSION_2/3 */ |
2503 | if (!uac_v2v3_control_is_readable(bmControls: controls[valinfo->control / 8], |
2504 | control: valinfo->control)) |
2505 | continue; |
2506 | } |
2507 | |
2508 | map = find_map(p: state->map, unitid, control: valinfo->control); |
2509 | if (check_ignored_ctl(p: map)) |
2510 | continue; |
2511 | cval = kzalloc(size: sizeof(*cval), GFP_KERNEL); |
2512 | if (!cval) |
2513 | return -ENOMEM; |
2514 | snd_usb_mixer_elem_init_std(list: &cval->head, mixer: state->mixer, unitid); |
2515 | cval->control = valinfo->control; |
2516 | cval->val_type = valinfo->val_type; |
2517 | cval->channels = 1; |
2518 | |
2519 | if (state->mixer->protocol > UAC_VERSION_1 && |
2520 | !uac_v2v3_control_is_writeable(bmControls: controls[valinfo->control / 8], |
2521 | control: valinfo->control)) |
2522 | cval->master_readonly = 1; |
2523 | |
2524 | /* get min/max values */ |
2525 | switch (type) { |
2526 | case UAC_PROCESS_UP_DOWNMIX: { |
2527 | bool mode_sel = false; |
2528 | |
2529 | switch (state->mixer->protocol) { |
2530 | case UAC_VERSION_1: |
2531 | case UAC_VERSION_2: |
2532 | default: |
2533 | if (cval->control == UAC_UD_MODE_SELECT) |
2534 | mode_sel = true; |
2535 | break; |
2536 | case UAC_VERSION_3: |
2537 | if (cval->control == UAC3_UD_MODE_SELECT) |
2538 | mode_sel = true; |
2539 | break; |
2540 | } |
2541 | |
2542 | if (mode_sel) { |
2543 | __u8 *control_spec = uac_processing_unit_specific(desc, |
2544 | protocol: state->mixer->protocol); |
2545 | cval->min = 1; |
2546 | cval->max = control_spec[0]; |
2547 | cval->res = 1; |
2548 | cval->initialized = 1; |
2549 | break; |
2550 | } |
2551 | |
2552 | get_min_max(cval, valinfo->min_value); |
2553 | break; |
2554 | } |
2555 | case USB_XU_CLOCK_RATE: |
2556 | /* |
2557 | * E-Mu USB 0404/0202/TrackerPre/0204 |
2558 | * samplerate control quirk |
2559 | */ |
2560 | cval->min = 0; |
2561 | cval->max = 5; |
2562 | cval->res = 1; |
2563 | cval->initialized = 1; |
2564 | break; |
2565 | default: |
2566 | get_min_max(cval, valinfo->min_value); |
2567 | break; |
2568 | } |
2569 | |
2570 | err = get_cur_ctl_value(cval, validx: cval->control << 8, value: &val); |
2571 | if (err < 0) { |
2572 | usb_mixer_elem_info_free(cval); |
2573 | return -EINVAL; |
2574 | } |
2575 | |
2576 | kctl = snd_ctl_new1(kcontrolnew: &mixer_procunit_ctl, private_data: cval); |
2577 | if (!kctl) { |
2578 | usb_mixer_elem_info_free(cval); |
2579 | return -ENOMEM; |
2580 | } |
2581 | kctl->private_free = snd_usb_mixer_elem_free; |
2582 | |
2583 | if (check_mapped_name(p: map, buf: kctl->id.name, buflen: sizeof(kctl->id.name))) { |
2584 | /* nothing */ ; |
2585 | } else if (info->name) { |
2586 | strscpy(p: kctl->id.name, q: info->name, size: sizeof(kctl->id.name)); |
2587 | } else { |
2588 | if (extension_unit) |
2589 | nameid = uac_extension_unit_iExtension(desc, protocol: state->mixer->protocol); |
2590 | else |
2591 | nameid = uac_processing_unit_iProcessing(desc, protocol: state->mixer->protocol); |
2592 | len = 0; |
2593 | if (nameid) |
2594 | len = snd_usb_copy_string_desc(chip: state->chip, |
2595 | index: nameid, |
2596 | buf: kctl->id.name, |
2597 | maxlen: sizeof(kctl->id.name)); |
2598 | if (!len) |
2599 | strscpy(p: kctl->id.name, q: name, size: sizeof(kctl->id.name)); |
2600 | } |
2601 | append_ctl_name(kctl, str: " " ); |
2602 | append_ctl_name(kctl, str: valinfo->suffix); |
2603 | |
2604 | usb_audio_dbg(state->chip, |
2605 | "[%d] PU [%s] ch = %d, val = %d/%d\n" , |
2606 | cval->head.id, kctl->id.name, cval->channels, |
2607 | cval->min, cval->max); |
2608 | |
2609 | err = snd_usb_mixer_add_control(&cval->head, kctl); |
2610 | if (err < 0) |
2611 | return err; |
2612 | } |
2613 | return 0; |
2614 | } |
2615 | |
2616 | static int parse_audio_processing_unit(struct mixer_build *state, int unitid, |
2617 | void *raw_desc) |
2618 | { |
2619 | switch (state->mixer->protocol) { |
2620 | case UAC_VERSION_1: |
2621 | case UAC_VERSION_2: |
2622 | default: |
2623 | return build_audio_procunit(state, unitid, raw_desc, |
2624 | list: procunits, extension_unit: false); |
2625 | case UAC_VERSION_3: |
2626 | return build_audio_procunit(state, unitid, raw_desc, |
2627 | list: uac3_procunits, extension_unit: false); |
2628 | } |
2629 | } |
2630 | |
2631 | static int parse_audio_extension_unit(struct mixer_build *state, int unitid, |
2632 | void *raw_desc) |
2633 | { |
2634 | /* |
2635 | * Note that we parse extension units with processing unit descriptors. |
2636 | * That's ok as the layout is the same. |
2637 | */ |
2638 | return build_audio_procunit(state, unitid, raw_desc, list: extunits, extension_unit: true); |
2639 | } |
2640 | |
2641 | /* |
2642 | * Selector Unit |
2643 | */ |
2644 | |
2645 | /* |
2646 | * info callback for selector unit |
2647 | * use an enumerator type for routing |
2648 | */ |
2649 | static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, |
2650 | struct snd_ctl_elem_info *uinfo) |
2651 | { |
2652 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
2653 | const char **itemlist = (const char **)kcontrol->private_value; |
2654 | |
2655 | if (snd_BUG_ON(!itemlist)) |
2656 | return -EINVAL; |
2657 | return snd_ctl_enum_info(info: uinfo, channels: 1, items: cval->max, names: itemlist); |
2658 | } |
2659 | |
2660 | /* get callback for selector unit */ |
2661 | static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, |
2662 | struct snd_ctl_elem_value *ucontrol) |
2663 | { |
2664 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
2665 | int val, err; |
2666 | |
2667 | err = get_cur_ctl_value(cval, validx: cval->control << 8, value: &val); |
2668 | if (err < 0) { |
2669 | ucontrol->value.enumerated.item[0] = 0; |
2670 | return filter_error(cval, err); |
2671 | } |
2672 | val = get_relative_value(cval, val); |
2673 | ucontrol->value.enumerated.item[0] = val; |
2674 | return 0; |
2675 | } |
2676 | |
2677 | /* put callback for selector unit */ |
2678 | static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, |
2679 | struct snd_ctl_elem_value *ucontrol) |
2680 | { |
2681 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
2682 | int val, oval, err; |
2683 | |
2684 | err = get_cur_ctl_value(cval, validx: cval->control << 8, value: &oval); |
2685 | if (err < 0) |
2686 | return filter_error(cval, err); |
2687 | val = ucontrol->value.enumerated.item[0]; |
2688 | val = get_abs_value(cval, val); |
2689 | if (val != oval) { |
2690 | set_cur_ctl_value(cval, validx: cval->control << 8, value: val); |
2691 | return 1; |
2692 | } |
2693 | return 0; |
2694 | } |
2695 | |
2696 | /* alsa control interface for selector unit */ |
2697 | static const struct snd_kcontrol_new mixer_selectunit_ctl = { |
2698 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
2699 | .name = "" , /* will be filled later */ |
2700 | .info = mixer_ctl_selector_info, |
2701 | .get = mixer_ctl_selector_get, |
2702 | .put = mixer_ctl_selector_put, |
2703 | }; |
2704 | |
2705 | /* |
2706 | * private free callback. |
2707 | * free both private_data and private_value |
2708 | */ |
2709 | static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) |
2710 | { |
2711 | int i, num_ins = 0; |
2712 | |
2713 | if (kctl->private_data) { |
2714 | struct usb_mixer_elem_info *cval = kctl->private_data; |
2715 | num_ins = cval->max; |
2716 | usb_mixer_elem_info_free(cval); |
2717 | kctl->private_data = NULL; |
2718 | } |
2719 | if (kctl->private_value) { |
2720 | char **itemlist = (char **)kctl->private_value; |
2721 | for (i = 0; i < num_ins; i++) |
2722 | kfree(objp: itemlist[i]); |
2723 | kfree(objp: itemlist); |
2724 | kctl->private_value = 0; |
2725 | } |
2726 | } |
2727 | |
2728 | /* |
2729 | * parse a selector unit |
2730 | */ |
2731 | static int parse_audio_selector_unit(struct mixer_build *state, int unitid, |
2732 | void *raw_desc) |
2733 | { |
2734 | struct uac_selector_unit_descriptor *desc = raw_desc; |
2735 | unsigned int i, nameid, len; |
2736 | int err; |
2737 | struct usb_mixer_elem_info *cval; |
2738 | struct snd_kcontrol *kctl; |
2739 | const struct usbmix_name_map *map; |
2740 | char **namelist; |
2741 | |
2742 | for (i = 0; i < desc->bNrInPins; i++) { |
2743 | err = parse_audio_unit(state, unitid: desc->baSourceID[i]); |
2744 | if (err < 0) |
2745 | return err; |
2746 | } |
2747 | |
2748 | if (desc->bNrInPins == 1) /* only one ? nonsense! */ |
2749 | return 0; |
2750 | |
2751 | map = find_map(p: state->map, unitid, control: 0); |
2752 | if (check_ignored_ctl(p: map)) |
2753 | return 0; |
2754 | |
2755 | cval = kzalloc(size: sizeof(*cval), GFP_KERNEL); |
2756 | if (!cval) |
2757 | return -ENOMEM; |
2758 | snd_usb_mixer_elem_init_std(list: &cval->head, mixer: state->mixer, unitid); |
2759 | cval->val_type = USB_MIXER_U8; |
2760 | cval->channels = 1; |
2761 | cval->min = 1; |
2762 | cval->max = desc->bNrInPins; |
2763 | cval->res = 1; |
2764 | cval->initialized = 1; |
2765 | |
2766 | switch (state->mixer->protocol) { |
2767 | case UAC_VERSION_1: |
2768 | default: |
2769 | cval->control = 0; |
2770 | break; |
2771 | case UAC_VERSION_2: |
2772 | case UAC_VERSION_3: |
2773 | if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR || |
2774 | desc->bDescriptorSubtype == UAC3_CLOCK_SELECTOR) |
2775 | cval->control = UAC2_CX_CLOCK_SELECTOR; |
2776 | else /* UAC2/3_SELECTOR_UNIT */ |
2777 | cval->control = UAC2_SU_SELECTOR; |
2778 | break; |
2779 | } |
2780 | |
2781 | namelist = kcalloc(n: desc->bNrInPins, size: sizeof(char *), GFP_KERNEL); |
2782 | if (!namelist) { |
2783 | err = -ENOMEM; |
2784 | goto error_cval; |
2785 | } |
2786 | #define MAX_ITEM_NAME_LEN 64 |
2787 | for (i = 0; i < desc->bNrInPins; i++) { |
2788 | struct usb_audio_term iterm; |
2789 | namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); |
2790 | if (!namelist[i]) { |
2791 | err = -ENOMEM; |
2792 | goto error_name; |
2793 | } |
2794 | len = check_mapped_selector_name(state, unitid, index: i, buf: namelist[i], |
2795 | MAX_ITEM_NAME_LEN); |
2796 | if (! len && check_input_term(state, id: desc->baSourceID[i], term: &iterm) >= 0) |
2797 | len = get_term_name(chip: state->chip, iterm: &iterm, name: namelist[i], |
2798 | MAX_ITEM_NAME_LEN, term_only: 0); |
2799 | if (! len) |
2800 | sprintf(buf: namelist[i], fmt: "Input %u" , i); |
2801 | } |
2802 | |
2803 | kctl = snd_ctl_new1(kcontrolnew: &mixer_selectunit_ctl, private_data: cval); |
2804 | if (! kctl) { |
2805 | usb_audio_err(state->chip, "cannot malloc kcontrol\n" ); |
2806 | err = -ENOMEM; |
2807 | goto error_name; |
2808 | } |
2809 | kctl->private_value = (unsigned long)namelist; |
2810 | kctl->private_free = usb_mixer_selector_elem_free; |
2811 | |
2812 | /* check the static mapping table at first */ |
2813 | len = check_mapped_name(p: map, buf: kctl->id.name, buflen: sizeof(kctl->id.name)); |
2814 | if (!len) { |
2815 | /* no mapping ? */ |
2816 | switch (state->mixer->protocol) { |
2817 | case UAC_VERSION_1: |
2818 | case UAC_VERSION_2: |
2819 | default: |
2820 | /* if iSelector is given, use it */ |
2821 | nameid = uac_selector_unit_iSelector(desc); |
2822 | if (nameid) |
2823 | len = snd_usb_copy_string_desc(chip: state->chip, |
2824 | index: nameid, buf: kctl->id.name, |
2825 | maxlen: sizeof(kctl->id.name)); |
2826 | break; |
2827 | case UAC_VERSION_3: |
2828 | /* TODO: Class-Specific strings not yet supported */ |
2829 | break; |
2830 | } |
2831 | |
2832 | /* ... or pick up the terminal name at next */ |
2833 | if (!len) |
2834 | len = get_term_name(chip: state->chip, iterm: &state->oterm, |
2835 | name: kctl->id.name, maxlen: sizeof(kctl->id.name), term_only: 0); |
2836 | /* ... or use the fixed string "USB" as the last resort */ |
2837 | if (!len) |
2838 | strscpy(p: kctl->id.name, q: "USB" , size: sizeof(kctl->id.name)); |
2839 | |
2840 | /* and add the proper suffix */ |
2841 | if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR || |
2842 | desc->bDescriptorSubtype == UAC3_CLOCK_SELECTOR) |
2843 | append_ctl_name(kctl, str: " Clock Source" ); |
2844 | else if ((state->oterm.type & 0xff00) == 0x0100) |
2845 | append_ctl_name(kctl, str: " Capture Source" ); |
2846 | else |
2847 | append_ctl_name(kctl, str: " Playback Source" ); |
2848 | } |
2849 | |
2850 | usb_audio_dbg(state->chip, "[%d] SU [%s] items = %d\n" , |
2851 | cval->head.id, kctl->id.name, desc->bNrInPins); |
2852 | return snd_usb_mixer_add_control(&cval->head, kctl); |
2853 | |
2854 | error_name: |
2855 | for (i = 0; i < desc->bNrInPins; i++) |
2856 | kfree(objp: namelist[i]); |
2857 | kfree(objp: namelist); |
2858 | error_cval: |
2859 | usb_mixer_elem_info_free(cval); |
2860 | return err; |
2861 | } |
2862 | |
2863 | /* |
2864 | * parse an audio unit recursively |
2865 | */ |
2866 | |
2867 | static int parse_audio_unit(struct mixer_build *state, int unitid) |
2868 | { |
2869 | unsigned char *p1; |
2870 | int protocol = state->mixer->protocol; |
2871 | |
2872 | if (test_and_set_bit(nr: unitid, addr: state->unitbitmap)) |
2873 | return 0; /* the unit already visited */ |
2874 | |
2875 | p1 = find_audio_control_unit(state, unit: unitid); |
2876 | if (!p1) { |
2877 | usb_audio_err(state->chip, "unit %d not found!\n" , unitid); |
2878 | return -EINVAL; |
2879 | } |
2880 | |
2881 | if (!snd_usb_validate_audio_desc(p: p1, protocol)) { |
2882 | usb_audio_dbg(state->chip, "invalid unit %d\n" , unitid); |
2883 | return 0; /* skip invalid unit */ |
2884 | } |
2885 | |
2886 | switch (PTYPE(protocol, p1[2])) { |
2887 | case PTYPE(UAC_VERSION_1, UAC_INPUT_TERMINAL): |
2888 | case PTYPE(UAC_VERSION_2, UAC_INPUT_TERMINAL): |
2889 | case PTYPE(UAC_VERSION_3, UAC_INPUT_TERMINAL): |
2890 | return parse_audio_input_terminal(state, unitid, raw_desc: p1); |
2891 | case PTYPE(UAC_VERSION_1, UAC_MIXER_UNIT): |
2892 | case PTYPE(UAC_VERSION_2, UAC_MIXER_UNIT): |
2893 | case PTYPE(UAC_VERSION_3, UAC3_MIXER_UNIT): |
2894 | return parse_audio_mixer_unit(state, unitid, raw_desc: p1); |
2895 | case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SOURCE): |
2896 | case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SOURCE): |
2897 | return parse_clock_source_unit(state, unitid, ftr: p1); |
2898 | case PTYPE(UAC_VERSION_1, UAC_SELECTOR_UNIT): |
2899 | case PTYPE(UAC_VERSION_2, UAC_SELECTOR_UNIT): |
2900 | case PTYPE(UAC_VERSION_3, UAC3_SELECTOR_UNIT): |
2901 | case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SELECTOR): |
2902 | case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SELECTOR): |
2903 | return parse_audio_selector_unit(state, unitid, raw_desc: p1); |
2904 | case PTYPE(UAC_VERSION_1, UAC_FEATURE_UNIT): |
2905 | case PTYPE(UAC_VERSION_2, UAC_FEATURE_UNIT): |
2906 | case PTYPE(UAC_VERSION_3, UAC3_FEATURE_UNIT): |
2907 | return parse_audio_feature_unit(state, unitid, ftr: p1); |
2908 | case PTYPE(UAC_VERSION_1, UAC1_PROCESSING_UNIT): |
2909 | case PTYPE(UAC_VERSION_2, UAC2_PROCESSING_UNIT_V2): |
2910 | case PTYPE(UAC_VERSION_3, UAC3_PROCESSING_UNIT): |
2911 | return parse_audio_processing_unit(state, unitid, raw_desc: p1); |
2912 | case PTYPE(UAC_VERSION_1, UAC1_EXTENSION_UNIT): |
2913 | case PTYPE(UAC_VERSION_2, UAC2_EXTENSION_UNIT_V2): |
2914 | case PTYPE(UAC_VERSION_3, UAC3_EXTENSION_UNIT): |
2915 | return parse_audio_extension_unit(state, unitid, raw_desc: p1); |
2916 | case PTYPE(UAC_VERSION_2, UAC2_EFFECT_UNIT): |
2917 | case PTYPE(UAC_VERSION_3, UAC3_EFFECT_UNIT): |
2918 | return 0; /* FIXME - effect units not implemented yet */ |
2919 | default: |
2920 | usb_audio_err(state->chip, |
2921 | "unit %u: unexpected type 0x%02x\n" , |
2922 | unitid, p1[2]); |
2923 | return -EINVAL; |
2924 | } |
2925 | } |
2926 | |
2927 | static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) |
2928 | { |
2929 | /* kill pending URBs */ |
2930 | snd_usb_mixer_disconnect(mixer); |
2931 | |
2932 | kfree(objp: mixer->id_elems); |
2933 | if (mixer->urb) { |
2934 | kfree(objp: mixer->urb->transfer_buffer); |
2935 | usb_free_urb(urb: mixer->urb); |
2936 | } |
2937 | usb_free_urb(urb: mixer->rc_urb); |
2938 | kfree(objp: mixer->rc_setup_packet); |
2939 | kfree(objp: mixer); |
2940 | } |
2941 | |
2942 | static int snd_usb_mixer_dev_free(struct snd_device *device) |
2943 | { |
2944 | struct usb_mixer_interface *mixer = device->device_data; |
2945 | snd_usb_mixer_free(mixer); |
2946 | return 0; |
2947 | } |
2948 | |
2949 | /* UAC3 predefined channels configuration */ |
2950 | struct uac3_badd_profile { |
2951 | int subclass; |
2952 | const char *name; |
2953 | int c_chmask; /* capture channels mask */ |
2954 | int p_chmask; /* playback channels mask */ |
2955 | int st_chmask; /* side tone mixing channel mask */ |
2956 | }; |
2957 | |
2958 | static const struct uac3_badd_profile uac3_badd_profiles[] = { |
2959 | { |
2960 | /* |
2961 | * BAIF, BAOF or combination of both |
2962 | * IN: Mono or Stereo cfg, Mono alt possible |
2963 | * OUT: Mono or Stereo cfg, Mono alt possible |
2964 | */ |
2965 | .subclass = UAC3_FUNCTION_SUBCLASS_GENERIC_IO, |
2966 | .name = "GENERIC IO" , |
2967 | .c_chmask = -1, /* dynamic channels */ |
2968 | .p_chmask = -1, /* dynamic channels */ |
2969 | }, |
2970 | { |
2971 | /* BAOF; Stereo only cfg, Mono alt possible */ |
2972 | .subclass = UAC3_FUNCTION_SUBCLASS_HEADPHONE, |
2973 | .name = "HEADPHONE" , |
2974 | .p_chmask = 3, |
2975 | }, |
2976 | { |
2977 | /* BAOF; Mono or Stereo cfg, Mono alt possible */ |
2978 | .subclass = UAC3_FUNCTION_SUBCLASS_SPEAKER, |
2979 | .name = "SPEAKER" , |
2980 | .p_chmask = -1, /* dynamic channels */ |
2981 | }, |
2982 | { |
2983 | /* BAIF; Mono or Stereo cfg, Mono alt possible */ |
2984 | .subclass = UAC3_FUNCTION_SUBCLASS_MICROPHONE, |
2985 | .name = "MICROPHONE" , |
2986 | .c_chmask = -1, /* dynamic channels */ |
2987 | }, |
2988 | { |
2989 | /* |
2990 | * BAIOF topology |
2991 | * IN: Mono only |
2992 | * OUT: Mono or Stereo cfg, Mono alt possible |
2993 | */ |
2994 | .subclass = UAC3_FUNCTION_SUBCLASS_HEADSET, |
2995 | .name = "HEADSET" , |
2996 | .c_chmask = 1, |
2997 | .p_chmask = -1, /* dynamic channels */ |
2998 | .st_chmask = 1, |
2999 | }, |
3000 | { |
3001 | /* BAIOF; IN: Mono only; OUT: Stereo only, Mono alt possible */ |
3002 | .subclass = UAC3_FUNCTION_SUBCLASS_HEADSET_ADAPTER, |
3003 | .name = "HEADSET ADAPTER" , |
3004 | .c_chmask = 1, |
3005 | .p_chmask = 3, |
3006 | .st_chmask = 1, |
3007 | }, |
3008 | { |
3009 | /* BAIF + BAOF; IN: Mono only; OUT: Mono only */ |
3010 | .subclass = UAC3_FUNCTION_SUBCLASS_SPEAKERPHONE, |
3011 | .name = "SPEAKERPHONE" , |
3012 | .c_chmask = 1, |
3013 | .p_chmask = 1, |
3014 | }, |
3015 | { 0 } /* terminator */ |
3016 | }; |
3017 | |
3018 | static bool uac3_badd_func_has_valid_channels(struct usb_mixer_interface *mixer, |
3019 | const struct uac3_badd_profile *f, |
3020 | int c_chmask, int p_chmask) |
3021 | { |
3022 | /* |
3023 | * If both playback/capture channels are dynamic, make sure |
3024 | * at least one channel is present |
3025 | */ |
3026 | if (f->c_chmask < 0 && f->p_chmask < 0) { |
3027 | if (!c_chmask && !p_chmask) { |
3028 | usb_audio_warn(mixer->chip, "BAAD %s: no channels?" , |
3029 | f->name); |
3030 | return false; |
3031 | } |
3032 | return true; |
3033 | } |
3034 | |
3035 | if ((f->c_chmask < 0 && !c_chmask) || |
3036 | (f->c_chmask >= 0 && f->c_chmask != c_chmask)) { |
3037 | usb_audio_warn(mixer->chip, "BAAD %s c_chmask mismatch" , |
3038 | f->name); |
3039 | return false; |
3040 | } |
3041 | if ((f->p_chmask < 0 && !p_chmask) || |
3042 | (f->p_chmask >= 0 && f->p_chmask != p_chmask)) { |
3043 | usb_audio_warn(mixer->chip, "BAAD %s p_chmask mismatch" , |
3044 | f->name); |
3045 | return false; |
3046 | } |
3047 | return true; |
3048 | } |
3049 | |
3050 | /* |
3051 | * create mixer controls for UAC3 BADD profiles |
3052 | * |
3053 | * UAC3 BADD device doesn't contain CS descriptors thus we will guess everything |
3054 | * |
3055 | * BADD device may contain Mixer Unit, which doesn't have any controls, skip it |
3056 | */ |
3057 | static int snd_usb_mixer_controls_badd(struct usb_mixer_interface *mixer, |
3058 | int ctrlif) |
3059 | { |
3060 | struct usb_device *dev = mixer->chip->dev; |
3061 | struct usb_interface_assoc_descriptor *assoc; |
3062 | int badd_profile = mixer->chip->badd_profile; |
3063 | const struct uac3_badd_profile *f; |
3064 | const struct usbmix_ctl_map *map; |
3065 | int p_chmask = 0, c_chmask = 0, st_chmask = 0; |
3066 | int i; |
3067 | |
3068 | assoc = usb_ifnum_to_if(dev, ifnum: ctrlif)->intf_assoc; |
3069 | |
3070 | /* Detect BADD capture/playback channels from AS EP descriptors */ |
3071 | for (i = 0; i < assoc->bInterfaceCount; i++) { |
3072 | int intf = assoc->bFirstInterface + i; |
3073 | |
3074 | struct usb_interface *iface; |
3075 | struct usb_host_interface *alts; |
3076 | struct usb_interface_descriptor *altsd; |
3077 | unsigned int maxpacksize; |
3078 | char dir_in; |
3079 | int chmask, num; |
3080 | |
3081 | if (intf == ctrlif) |
3082 | continue; |
3083 | |
3084 | iface = usb_ifnum_to_if(dev, ifnum: intf); |
3085 | if (!iface) |
3086 | continue; |
3087 | |
3088 | num = iface->num_altsetting; |
3089 | |
3090 | if (num < 2) |
3091 | return -EINVAL; |
3092 | |
3093 | /* |
3094 | * The number of Channels in an AudioStreaming interface |
3095 | * and the audio sample bit resolution (16 bits or 24 |
3096 | * bits) can be derived from the wMaxPacketSize field in |
3097 | * the Standard AS Audio Data Endpoint descriptor in |
3098 | * Alternate Setting 1 |
3099 | */ |
3100 | alts = &iface->altsetting[1]; |
3101 | altsd = get_iface_desc(alts); |
3102 | |
3103 | if (altsd->bNumEndpoints < 1) |
3104 | return -EINVAL; |
3105 | |
3106 | /* check direction */ |
3107 | dir_in = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN); |
3108 | maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); |
3109 | |
3110 | switch (maxpacksize) { |
3111 | default: |
3112 | usb_audio_err(mixer->chip, |
3113 | "incorrect wMaxPacketSize 0x%x for BADD profile\n" , |
3114 | maxpacksize); |
3115 | return -EINVAL; |
3116 | case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_16: |
3117 | case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_16: |
3118 | case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_24: |
3119 | case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_24: |
3120 | chmask = 1; |
3121 | break; |
3122 | case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_16: |
3123 | case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_16: |
3124 | case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_24: |
3125 | case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_24: |
3126 | chmask = 3; |
3127 | break; |
3128 | } |
3129 | |
3130 | if (dir_in) |
3131 | c_chmask = chmask; |
3132 | else |
3133 | p_chmask = chmask; |
3134 | } |
3135 | |
3136 | usb_audio_dbg(mixer->chip, |
3137 | "UAC3 BADD profile 0x%x: detected c_chmask=%d p_chmask=%d\n" , |
3138 | badd_profile, c_chmask, p_chmask); |
3139 | |
3140 | /* check the mapping table */ |
3141 | for (map = uac3_badd_usbmix_ctl_maps; map->id; map++) { |
3142 | if (map->id == badd_profile) |
3143 | break; |
3144 | } |
3145 | |
3146 | if (!map->id) |
3147 | return -EINVAL; |
3148 | |
3149 | for (f = uac3_badd_profiles; f->name; f++) { |
3150 | if (badd_profile == f->subclass) |
3151 | break; |
3152 | } |
3153 | if (!f->name) |
3154 | return -EINVAL; |
3155 | if (!uac3_badd_func_has_valid_channels(mixer, f, c_chmask, p_chmask)) |
3156 | return -EINVAL; |
3157 | st_chmask = f->st_chmask; |
3158 | |
3159 | /* Playback */ |
3160 | if (p_chmask) { |
3161 | /* Master channel, always writable */ |
3162 | build_feature_ctl_badd(mixer, ctl_mask: 0, UAC_FU_MUTE, |
3163 | UAC3_BADD_FU_ID2, badd_map: map->map); |
3164 | /* Mono/Stereo volume channels, always writable */ |
3165 | build_feature_ctl_badd(mixer, ctl_mask: p_chmask, UAC_FU_VOLUME, |
3166 | UAC3_BADD_FU_ID2, badd_map: map->map); |
3167 | } |
3168 | |
3169 | /* Capture */ |
3170 | if (c_chmask) { |
3171 | /* Master channel, always writable */ |
3172 | build_feature_ctl_badd(mixer, ctl_mask: 0, UAC_FU_MUTE, |
3173 | UAC3_BADD_FU_ID5, badd_map: map->map); |
3174 | /* Mono/Stereo volume channels, always writable */ |
3175 | build_feature_ctl_badd(mixer, ctl_mask: c_chmask, UAC_FU_VOLUME, |
3176 | UAC3_BADD_FU_ID5, badd_map: map->map); |
3177 | } |
3178 | |
3179 | /* Side tone-mixing */ |
3180 | if (st_chmask) { |
3181 | /* Master channel, always writable */ |
3182 | build_feature_ctl_badd(mixer, ctl_mask: 0, UAC_FU_MUTE, |
3183 | UAC3_BADD_FU_ID7, badd_map: map->map); |
3184 | /* Mono volume channel, always writable */ |
3185 | build_feature_ctl_badd(mixer, ctl_mask: 1, UAC_FU_VOLUME, |
3186 | UAC3_BADD_FU_ID7, badd_map: map->map); |
3187 | } |
3188 | |
3189 | /* Insertion Control */ |
3190 | if (f->subclass == UAC3_FUNCTION_SUBCLASS_HEADSET_ADAPTER) { |
3191 | struct usb_audio_term iterm, oterm; |
3192 | |
3193 | /* Input Term - Insertion control */ |
3194 | memset(&iterm, 0, sizeof(iterm)); |
3195 | iterm.id = UAC3_BADD_IT_ID4; |
3196 | iterm.type = UAC_BIDIR_TERMINAL_HEADSET; |
3197 | build_connector_control(mixer, imap: map->map, term: &iterm, is_input: true); |
3198 | |
3199 | /* Output Term - Insertion control */ |
3200 | memset(&oterm, 0, sizeof(oterm)); |
3201 | oterm.id = UAC3_BADD_OT_ID3; |
3202 | oterm.type = UAC_BIDIR_TERMINAL_HEADSET; |
3203 | build_connector_control(mixer, imap: map->map, term: &oterm, is_input: false); |
3204 | } |
3205 | |
3206 | return 0; |
3207 | } |
3208 | |
3209 | /* |
3210 | * create mixer controls |
3211 | * |
3212 | * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers |
3213 | */ |
3214 | static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) |
3215 | { |
3216 | struct mixer_build state; |
3217 | int err; |
3218 | const struct usbmix_ctl_map *map; |
3219 | void *p; |
3220 | |
3221 | memset(&state, 0, sizeof(state)); |
3222 | state.chip = mixer->chip; |
3223 | state.mixer = mixer; |
3224 | state.buffer = mixer->hostif->extra; |
3225 | state.buflen = mixer->hostif->extralen; |
3226 | |
3227 | /* check the mapping table */ |
3228 | for (map = usbmix_ctl_maps; map->id; map++) { |
3229 | if (map->id == state.chip->usb_id) { |
3230 | state.map = map->map; |
3231 | state.selector_map = map->selector_map; |
3232 | mixer->connector_map = map->connector_map; |
3233 | break; |
3234 | } |
3235 | } |
3236 | |
3237 | p = NULL; |
3238 | while ((p = snd_usb_find_csint_desc(descstart: mixer->hostif->extra, |
3239 | desclen: mixer->hostif->extralen, |
3240 | after: p, UAC_OUTPUT_TERMINAL)) != NULL) { |
3241 | if (!snd_usb_validate_audio_desc(p, protocol: mixer->protocol)) |
3242 | continue; /* skip invalid descriptor */ |
3243 | |
3244 | if (mixer->protocol == UAC_VERSION_1) { |
3245 | struct uac1_output_terminal_descriptor *desc = p; |
3246 | |
3247 | /* mark terminal ID as visited */ |
3248 | set_bit(nr: desc->bTerminalID, addr: state.unitbitmap); |
3249 | state.oterm.id = desc->bTerminalID; |
3250 | state.oterm.type = le16_to_cpu(desc->wTerminalType); |
3251 | state.oterm.name = desc->iTerminal; |
3252 | err = parse_audio_unit(state: &state, unitid: desc->bSourceID); |
3253 | if (err < 0 && err != -EINVAL) |
3254 | return err; |
3255 | } else if (mixer->protocol == UAC_VERSION_2) { |
3256 | struct uac2_output_terminal_descriptor *desc = p; |
3257 | |
3258 | /* mark terminal ID as visited */ |
3259 | set_bit(nr: desc->bTerminalID, addr: state.unitbitmap); |
3260 | state.oterm.id = desc->bTerminalID; |
3261 | state.oterm.type = le16_to_cpu(desc->wTerminalType); |
3262 | state.oterm.name = desc->iTerminal; |
3263 | err = parse_audio_unit(state: &state, unitid: desc->bSourceID); |
3264 | if (err < 0 && err != -EINVAL) |
3265 | return err; |
3266 | |
3267 | /* |
3268 | * For UAC2, use the same approach to also add the |
3269 | * clock selectors |
3270 | */ |
3271 | err = parse_audio_unit(state: &state, unitid: desc->bCSourceID); |
3272 | if (err < 0 && err != -EINVAL) |
3273 | return err; |
3274 | |
3275 | if ((state.oterm.type & 0xff00) != 0x0100 && |
3276 | uac_v2v3_control_is_readable(le16_to_cpu(desc->bmControls), |
3277 | UAC2_TE_CONNECTOR)) { |
3278 | build_connector_control(mixer: state.mixer, imap: state.map, |
3279 | term: &state.oterm, is_input: false); |
3280 | } |
3281 | } else { /* UAC_VERSION_3 */ |
3282 | struct uac3_output_terminal_descriptor *desc = p; |
3283 | |
3284 | /* mark terminal ID as visited */ |
3285 | set_bit(nr: desc->bTerminalID, addr: state.unitbitmap); |
3286 | state.oterm.id = desc->bTerminalID; |
3287 | state.oterm.type = le16_to_cpu(desc->wTerminalType); |
3288 | state.oterm.name = le16_to_cpu(desc->wTerminalDescrStr); |
3289 | err = parse_audio_unit(state: &state, unitid: desc->bSourceID); |
3290 | if (err < 0 && err != -EINVAL) |
3291 | return err; |
3292 | |
3293 | /* |
3294 | * For UAC3, use the same approach to also add the |
3295 | * clock selectors |
3296 | */ |
3297 | err = parse_audio_unit(state: &state, unitid: desc->bCSourceID); |
3298 | if (err < 0 && err != -EINVAL) |
3299 | return err; |
3300 | |
3301 | if ((state.oterm.type & 0xff00) != 0x0100 && |
3302 | uac_v2v3_control_is_readable(le32_to_cpu(desc->bmControls), |
3303 | UAC3_TE_INSERTION)) { |
3304 | build_connector_control(mixer: state.mixer, imap: state.map, |
3305 | term: &state.oterm, is_input: false); |
3306 | } |
3307 | } |
3308 | } |
3309 | |
3310 | return 0; |
3311 | } |
3312 | |
3313 | static int delegate_notify(struct usb_mixer_interface *mixer, int unitid, |
3314 | u8 *control, u8 *channel) |
3315 | { |
3316 | const struct usbmix_connector_map *map = mixer->connector_map; |
3317 | |
3318 | if (!map) |
3319 | return unitid; |
3320 | |
3321 | for (; map->id; map++) { |
3322 | if (map->id == unitid) { |
3323 | if (control && map->control) |
3324 | *control = map->control; |
3325 | if (channel && map->channel) |
3326 | *channel = map->channel; |
3327 | return map->delegated_id; |
3328 | } |
3329 | } |
3330 | return unitid; |
3331 | } |
3332 | |
3333 | void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) |
3334 | { |
3335 | struct usb_mixer_elem_list *list; |
3336 | |
3337 | unitid = delegate_notify(mixer, unitid, NULL, NULL); |
3338 | |
3339 | for_each_mixer_elem(list, mixer, unitid) { |
3340 | struct usb_mixer_elem_info *info; |
3341 | |
3342 | if (!list->is_std_info) |
3343 | continue; |
3344 | info = mixer_elem_list_to_info(list); |
3345 | /* invalidate cache, so the value is read from the device */ |
3346 | info->cached = 0; |
3347 | snd_ctl_notify(card: mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
3348 | id: &list->kctl->id); |
3349 | } |
3350 | } |
3351 | |
3352 | static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer, |
3353 | struct usb_mixer_elem_list *list) |
3354 | { |
3355 | struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list); |
3356 | static const char * const val_types[] = { |
3357 | [USB_MIXER_BOOLEAN] = "BOOLEAN" , |
3358 | [USB_MIXER_INV_BOOLEAN] = "INV_BOOLEAN" , |
3359 | [USB_MIXER_S8] = "S8" , |
3360 | [USB_MIXER_U8] = "U8" , |
3361 | [USB_MIXER_S16] = "S16" , |
3362 | [USB_MIXER_U16] = "U16" , |
3363 | [USB_MIXER_S32] = "S32" , |
3364 | [USB_MIXER_U32] = "U32" , |
3365 | [USB_MIXER_BESPOKEN] = "BESPOKEN" , |
3366 | }; |
3367 | snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, " |
3368 | "channels=%i, type=\"%s\"\n" , cval->head.id, |
3369 | cval->control, cval->cmask, cval->channels, |
3370 | val_types[cval->val_type]); |
3371 | snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n" , |
3372 | cval->min, cval->max, cval->dBmin, cval->dBmax); |
3373 | } |
3374 | |
3375 | static void snd_usb_mixer_proc_read(struct snd_info_entry *entry, |
3376 | struct snd_info_buffer *buffer) |
3377 | { |
3378 | struct snd_usb_audio *chip = entry->private_data; |
3379 | struct usb_mixer_interface *mixer; |
3380 | struct usb_mixer_elem_list *list; |
3381 | int unitid; |
3382 | |
3383 | list_for_each_entry(mixer, &chip->mixer_list, list) { |
3384 | snd_iprintf(buffer, |
3385 | "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n" , |
3386 | chip->usb_id, mixer_ctrl_intf(mixer), |
3387 | mixer->ignore_ctl_error); |
3388 | snd_iprintf(buffer, "Card: %s\n" , chip->card->longname); |
3389 | for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) { |
3390 | for_each_mixer_elem(list, mixer, unitid) { |
3391 | snd_iprintf(buffer, " Unit: %i\n" , list->id); |
3392 | if (list->kctl) |
3393 | snd_iprintf(buffer, |
3394 | " Control: name=\"%s\", index=%i\n" , |
3395 | list->kctl->id.name, |
3396 | list->kctl->id.index); |
3397 | if (list->dump) |
3398 | list->dump(buffer, list); |
3399 | } |
3400 | } |
3401 | } |
3402 | } |
3403 | |
3404 | static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer, |
3405 | int attribute, int value, int index) |
3406 | { |
3407 | struct usb_mixer_elem_list *list; |
3408 | __u8 unitid = (index >> 8) & 0xff; |
3409 | __u8 control = (value >> 8) & 0xff; |
3410 | __u8 channel = value & 0xff; |
3411 | unsigned int count = 0; |
3412 | |
3413 | if (channel >= MAX_CHANNELS) { |
3414 | usb_audio_dbg(mixer->chip, |
3415 | "%s(): bogus channel number %d\n" , |
3416 | __func__, channel); |
3417 | return; |
3418 | } |
3419 | |
3420 | unitid = delegate_notify(mixer, unitid, control: &control, channel: &channel); |
3421 | |
3422 | for_each_mixer_elem(list, mixer, unitid) |
3423 | count++; |
3424 | |
3425 | if (count == 0) |
3426 | return; |
3427 | |
3428 | for_each_mixer_elem(list, mixer, unitid) { |
3429 | struct usb_mixer_elem_info *info; |
3430 | |
3431 | if (!list->kctl) |
3432 | continue; |
3433 | if (!list->is_std_info) |
3434 | continue; |
3435 | |
3436 | info = mixer_elem_list_to_info(list); |
3437 | if (count > 1 && info->control != control) |
3438 | continue; |
3439 | |
3440 | switch (attribute) { |
3441 | case UAC2_CS_CUR: |
3442 | /* invalidate cache, so the value is read from the device */ |
3443 | if (channel) |
3444 | info->cached &= ~(1 << channel); |
3445 | else /* master channel */ |
3446 | info->cached = 0; |
3447 | |
3448 | snd_ctl_notify(card: mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
3449 | id: &info->head.kctl->id); |
3450 | break; |
3451 | |
3452 | case UAC2_CS_RANGE: |
3453 | /* TODO */ |
3454 | break; |
3455 | |
3456 | case UAC2_CS_MEM: |
3457 | /* TODO */ |
3458 | break; |
3459 | |
3460 | default: |
3461 | usb_audio_dbg(mixer->chip, |
3462 | "unknown attribute %d in interrupt\n" , |
3463 | attribute); |
3464 | break; |
3465 | } /* switch */ |
3466 | } |
3467 | } |
3468 | |
3469 | static void snd_usb_mixer_interrupt(struct urb *urb) |
3470 | { |
3471 | struct usb_mixer_interface *mixer = urb->context; |
3472 | int len = urb->actual_length; |
3473 | int ustatus = urb->status; |
3474 | |
3475 | if (ustatus != 0) |
3476 | goto requeue; |
3477 | |
3478 | if (mixer->protocol == UAC_VERSION_1) { |
3479 | struct uac1_status_word *status; |
3480 | |
3481 | for (status = urb->transfer_buffer; |
3482 | len >= sizeof(*status); |
3483 | len -= sizeof(*status), status++) { |
3484 | dev_dbg(&urb->dev->dev, "status interrupt: %02x %02x\n" , |
3485 | status->bStatusType, |
3486 | status->bOriginator); |
3487 | |
3488 | /* ignore any notifications not from the control interface */ |
3489 | if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) != |
3490 | UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF) |
3491 | continue; |
3492 | |
3493 | if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED) |
3494 | snd_usb_mixer_rc_memory_change(mixer, unitid: status->bOriginator); |
3495 | else |
3496 | snd_usb_mixer_notify_id(mixer, unitid: status->bOriginator); |
3497 | } |
3498 | } else { /* UAC_VERSION_2 */ |
3499 | struct uac2_interrupt_data_msg *msg; |
3500 | |
3501 | for (msg = urb->transfer_buffer; |
3502 | len >= sizeof(*msg); |
3503 | len -= sizeof(*msg), msg++) { |
3504 | /* drop vendor specific and endpoint requests */ |
3505 | if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) || |
3506 | (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP)) |
3507 | continue; |
3508 | |
3509 | snd_usb_mixer_interrupt_v2(mixer, attribute: msg->bAttribute, |
3510 | le16_to_cpu(msg->wValue), |
3511 | le16_to_cpu(msg->wIndex)); |
3512 | } |
3513 | } |
3514 | |
3515 | requeue: |
3516 | if (ustatus != -ENOENT && |
3517 | ustatus != -ECONNRESET && |
3518 | ustatus != -ESHUTDOWN) { |
3519 | urb->dev = mixer->chip->dev; |
3520 | usb_submit_urb(urb, GFP_ATOMIC); |
3521 | } |
3522 | } |
3523 | |
3524 | /* create the handler for the optional status interrupt endpoint */ |
3525 | static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) |
3526 | { |
3527 | struct usb_endpoint_descriptor *ep; |
3528 | void *transfer_buffer; |
3529 | int buffer_length; |
3530 | unsigned int epnum; |
3531 | |
3532 | /* we need one interrupt input endpoint */ |
3533 | if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1) |
3534 | return 0; |
3535 | ep = get_endpoint(mixer->hostif, 0); |
3536 | if (!usb_endpoint_dir_in(epd: ep) || !usb_endpoint_xfer_int(epd: ep)) |
3537 | return 0; |
3538 | |
3539 | epnum = usb_endpoint_num(epd: ep); |
3540 | buffer_length = le16_to_cpu(ep->wMaxPacketSize); |
3541 | transfer_buffer = kmalloc(size: buffer_length, GFP_KERNEL); |
3542 | if (!transfer_buffer) |
3543 | return -ENOMEM; |
3544 | mixer->urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
3545 | if (!mixer->urb) { |
3546 | kfree(objp: transfer_buffer); |
3547 | return -ENOMEM; |
3548 | } |
3549 | usb_fill_int_urb(urb: mixer->urb, dev: mixer->chip->dev, |
3550 | usb_rcvintpipe(mixer->chip->dev, epnum), |
3551 | transfer_buffer, buffer_length, |
3552 | complete_fn: snd_usb_mixer_interrupt, context: mixer, interval: ep->bInterval); |
3553 | usb_submit_urb(urb: mixer->urb, GFP_KERNEL); |
3554 | return 0; |
3555 | } |
3556 | |
3557 | int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif) |
3558 | { |
3559 | static const struct snd_device_ops dev_ops = { |
3560 | .dev_free = snd_usb_mixer_dev_free |
3561 | }; |
3562 | struct usb_mixer_interface *mixer; |
3563 | int err; |
3564 | |
3565 | strcpy(p: chip->card->mixername, q: "USB Mixer" ); |
3566 | |
3567 | mixer = kzalloc(size: sizeof(*mixer), GFP_KERNEL); |
3568 | if (!mixer) |
3569 | return -ENOMEM; |
3570 | mixer->chip = chip; |
3571 | mixer->ignore_ctl_error = !!(chip->quirk_flags & QUIRK_FLAG_IGNORE_CTL_ERROR); |
3572 | mixer->id_elems = kcalloc(MAX_ID_ELEMS, size: sizeof(*mixer->id_elems), |
3573 | GFP_KERNEL); |
3574 | if (!mixer->id_elems) { |
3575 | kfree(objp: mixer); |
3576 | return -ENOMEM; |
3577 | } |
3578 | |
3579 | mixer->hostif = &usb_ifnum_to_if(dev: chip->dev, ifnum: ctrlif)->altsetting[0]; |
3580 | switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) { |
3581 | case UAC_VERSION_1: |
3582 | default: |
3583 | mixer->protocol = UAC_VERSION_1; |
3584 | break; |
3585 | case UAC_VERSION_2: |
3586 | mixer->protocol = UAC_VERSION_2; |
3587 | break; |
3588 | case UAC_VERSION_3: |
3589 | mixer->protocol = UAC_VERSION_3; |
3590 | break; |
3591 | } |
3592 | |
3593 | if (mixer->protocol == UAC_VERSION_3 && |
3594 | chip->badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) { |
3595 | err = snd_usb_mixer_controls_badd(mixer, ctrlif); |
3596 | if (err < 0) |
3597 | goto _error; |
3598 | } else { |
3599 | err = snd_usb_mixer_controls(mixer); |
3600 | if (err < 0) |
3601 | goto _error; |
3602 | } |
3603 | |
3604 | err = snd_usb_mixer_status_create(mixer); |
3605 | if (err < 0) |
3606 | goto _error; |
3607 | |
3608 | err = snd_usb_mixer_apply_create_quirk(mixer); |
3609 | if (err < 0) |
3610 | goto _error; |
3611 | |
3612 | err = snd_device_new(card: chip->card, type: SNDRV_DEV_CODEC, device_data: mixer, ops: &dev_ops); |
3613 | if (err < 0) |
3614 | goto _error; |
3615 | |
3616 | if (list_empty(head: &chip->mixer_list)) |
3617 | snd_card_ro_proc_new(card: chip->card, name: "usbmixer" , private_data: chip, |
3618 | read: snd_usb_mixer_proc_read); |
3619 | |
3620 | list_add(new: &mixer->list, head: &chip->mixer_list); |
3621 | return 0; |
3622 | |
3623 | _error: |
3624 | snd_usb_mixer_free(mixer); |
3625 | return err; |
3626 | } |
3627 | |
3628 | void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer) |
3629 | { |
3630 | if (mixer->disconnected) |
3631 | return; |
3632 | if (mixer->urb) |
3633 | usb_kill_urb(urb: mixer->urb); |
3634 | if (mixer->rc_urb) |
3635 | usb_kill_urb(urb: mixer->rc_urb); |
3636 | if (mixer->private_free) |
3637 | mixer->private_free(mixer); |
3638 | mixer->disconnected = true; |
3639 | } |
3640 | |
3641 | /* stop any bus activity of a mixer */ |
3642 | static void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer) |
3643 | { |
3644 | usb_kill_urb(urb: mixer->urb); |
3645 | usb_kill_urb(urb: mixer->rc_urb); |
3646 | } |
3647 | |
3648 | static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) |
3649 | { |
3650 | int err; |
3651 | |
3652 | if (mixer->urb) { |
3653 | err = usb_submit_urb(urb: mixer->urb, GFP_NOIO); |
3654 | if (err < 0) |
3655 | return err; |
3656 | } |
3657 | |
3658 | return 0; |
3659 | } |
3660 | |
3661 | int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer) |
3662 | { |
3663 | snd_usb_mixer_inactivate(mixer); |
3664 | if (mixer->private_suspend) |
3665 | mixer->private_suspend(mixer); |
3666 | return 0; |
3667 | } |
3668 | |
3669 | static int restore_mixer_value(struct usb_mixer_elem_list *list) |
3670 | { |
3671 | struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list); |
3672 | int c, err, idx; |
3673 | |
3674 | if (cval->val_type == USB_MIXER_BESPOKEN) |
3675 | return 0; |
3676 | |
3677 | if (cval->cmask) { |
3678 | idx = 0; |
3679 | for (c = 0; c < MAX_CHANNELS; c++) { |
3680 | if (!(cval->cmask & (1 << c))) |
3681 | continue; |
3682 | if (cval->cached & (1 << (c + 1))) { |
3683 | err = snd_usb_set_cur_mix_value(cval, channel: c + 1, index: idx, |
3684 | value: cval->cache_val[idx]); |
3685 | if (err < 0) |
3686 | break; |
3687 | } |
3688 | idx++; |
3689 | } |
3690 | } else { |
3691 | /* master */ |
3692 | if (cval->cached) |
3693 | snd_usb_set_cur_mix_value(cval, channel: 0, index: 0, value: *cval->cache_val); |
3694 | } |
3695 | |
3696 | return 0; |
3697 | } |
3698 | |
3699 | int snd_usb_mixer_resume(struct usb_mixer_interface *mixer) |
3700 | { |
3701 | struct usb_mixer_elem_list *list; |
3702 | int id, err; |
3703 | |
3704 | /* restore cached mixer values */ |
3705 | for (id = 0; id < MAX_ID_ELEMS; id++) { |
3706 | for_each_mixer_elem(list, mixer, id) { |
3707 | if (list->resume) { |
3708 | err = list->resume(list); |
3709 | if (err < 0) |
3710 | return err; |
3711 | } |
3712 | } |
3713 | } |
3714 | |
3715 | snd_usb_mixer_resume_quirk(mixer); |
3716 | |
3717 | return snd_usb_mixer_activate(mixer); |
3718 | } |
3719 | |
3720 | void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list, |
3721 | struct usb_mixer_interface *mixer, |
3722 | int unitid) |
3723 | { |
3724 | list->mixer = mixer; |
3725 | list->id = unitid; |
3726 | list->dump = snd_usb_mixer_dump_cval; |
3727 | list->resume = restore_mixer_value; |
3728 | } |
3729 | |