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