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1 | /* |
2 | * (Tentative) USB Audio Driver for ALSA |
3 | * |
4 | * Mixer control part |
5 | * |
6 | * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> |
7 | * |
8 | * Many codes borrowed from audio.c by |
9 | * Alan Cox (alan@lxorguk.ukuu.org.uk) |
10 | * Thomas Sailer (sailer@ife.ee.ethz.ch) |
11 | * |
12 | * |
13 | * This program is free software; you can redistribute it and/or modify |
14 | * it under the terms of the GNU General Public License as published by |
15 | * the Free Software Foundation; either version 2 of the License, or |
16 | * (at your option) any later version. |
17 | * |
18 | * This program is distributed in the hope that it will be useful, |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
21 | * GNU General Public License for more details. |
22 | * |
23 | * You should have received a copy of the GNU General Public License |
24 | * along with this program; if not, write to the Free Software |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
26 | * |
27 | */ |
28 | |
29 | /* |
30 | * TODOs, for both the mixer and the streaming interfaces: |
31 | * |
32 | * - support for UAC2 effect units |
33 | * - support for graphical equalizers |
34 | * - RANGE and MEM set commands (UAC2) |
35 | * - RANGE and MEM interrupt dispatchers (UAC2) |
36 | * - audio channel clustering (UAC2) |
37 | * - audio sample rate converter units (UAC2) |
38 | * - proper handling of clock multipliers (UAC2) |
39 | * - dispatch clock change notifications (UAC2) |
40 | * - stop PCM streams which use a clock that became invalid |
41 | * - stop PCM streams which use a clock selector that has changed |
42 | * - parse available sample rates again when clock sources changed |
43 | */ |
44 | |
45 | #include <linux/bitops.h> |
46 | #include <linux/init.h> |
47 | #include <linux/list.h> |
48 | #include <linux/slab.h> |
49 | #include <linux/string.h> |
50 | #include <linux/usb.h> |
51 | #include <linux/usb/audio.h> |
52 | #include <linux/usb/audio-v2.h> |
53 | |
54 | #include <sound/core.h> |
55 | #include <sound/control.h> |
56 | #include <sound/hwdep.h> |
57 | #include <sound/info.h> |
58 | #include <sound/tlv.h> |
59 | |
60 | #include "usbaudio.h" |
61 | #include "mixer.h" |
62 | #include "helper.h" |
63 | #include "mixer_quirks.h" |
64 | #include "power.h" |
65 | |
66 | #define MAX_ID_ELEMS 256 |
67 | |
68 | struct usb_audio_term { |
69 | int id; |
70 | int type; |
71 | int channels; |
72 | unsigned int chconfig; |
73 | int name; |
74 | }; |
75 | |
76 | struct usbmix_name_map; |
77 | |
78 | struct mixer_build { |
79 | struct snd_usb_audio *chip; |
80 | struct usb_mixer_interface *mixer; |
81 | unsigned char *buffer; |
82 | unsigned int buflen; |
83 | DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS); |
84 | struct usb_audio_term oterm; |
85 | const struct usbmix_name_map *map; |
86 | const struct usbmix_selector_map *selector_map; |
87 | }; |
88 | |
89 | /*E-mu 0202/0404/0204 eXtension Unit(XU) control*/ |
90 | enum { |
91 | USB_XU_CLOCK_RATE = 0xe301, |
92 | USB_XU_CLOCK_SOURCE = 0xe302, |
93 | USB_XU_DIGITAL_IO_STATUS = 0xe303, |
94 | USB_XU_DEVICE_OPTIONS = 0xe304, |
95 | USB_XU_DIRECT_MONITORING = 0xe305, |
96 | USB_XU_METERING = 0xe306 |
97 | }; |
98 | enum { |
99 | USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/ |
100 | USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */ |
101 | USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */ |
102 | USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */ |
103 | }; |
104 | |
105 | /* |
106 | * manual mapping of mixer names |
107 | * if the mixer topology is too complicated and the parsed names are |
108 | * ambiguous, add the entries in usbmixer_maps.c. |
109 | */ |
110 | #include "mixer_maps.c" |
111 | |
112 | static const struct usbmix_name_map * |
113 | find_map(struct mixer_build *state, int unitid, int control) |
114 | { |
115 | const struct usbmix_name_map *p = state->map; |
116 | |
117 | if (!p) |
118 | return NULL; |
119 | |
120 | for (p = state->map; p->id; p++) { |
121 | if (p->id == unitid && |
122 | (!control || !p->control || control == p->control)) |
123 | return p; |
124 | } |
125 | return NULL; |
126 | } |
127 | |
128 | /* get the mapped name if the unit matches */ |
129 | static int |
130 | check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen) |
131 | { |
132 | if (!p || !p->name) |
133 | return 0; |
134 | |
135 | buflen--; |
136 | return strlcpy(buf, p->name, buflen); |
137 | } |
138 | |
139 | /* check whether the control should be ignored */ |
140 | static inline int |
141 | check_ignored_ctl(const struct usbmix_name_map *p) |
142 | { |
143 | if (!p || p->name || p->dB) |
144 | return 0; |
145 | return 1; |
146 | } |
147 | |
148 | /* dB mapping */ |
149 | static inline void check_mapped_dB(const struct usbmix_name_map *p, |
150 | struct usb_mixer_elem_info *cval) |
151 | { |
152 | if (p && p->dB) { |
153 | cval->dBmin = p->dB->min; |
154 | cval->dBmax = p->dB->max; |
155 | cval->initialized = 1; |
156 | } |
157 | } |
158 | |
159 | /* get the mapped selector source name */ |
160 | static int check_mapped_selector_name(struct mixer_build *state, int unitid, |
161 | int index, char *buf, int buflen) |
162 | { |
163 | const struct usbmix_selector_map *p; |
164 | |
165 | if (! state->selector_map) |
166 | return 0; |
167 | for (p = state->selector_map; p->id; p++) { |
168 | if (p->id == unitid && index < p->count) |
169 | return strlcpy(buf, p->names[index], buflen); |
170 | } |
171 | return 0; |
172 | } |
173 | |
174 | /* |
175 | * find an audio control unit with the given unit id |
176 | */ |
177 | static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit) |
178 | { |
179 | /* we just parse the header */ |
180 | struct uac_feature_unit_descriptor *hdr = NULL; |
181 | |
182 | while ((hdr = snd_usb_find_desc(state->buffer, state->buflen, hdr, |
183 | USB_DT_CS_INTERFACE)) != NULL) { |
184 | if (hdr->bLength >= 4 && |
185 | hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL && |
186 | hdr->bDescriptorSubtype <= UAC2_SAMPLE_RATE_CONVERTER && |
187 | hdr->bUnitID == unit) |
188 | return hdr; |
189 | } |
190 | |
191 | return NULL; |
192 | } |
193 | |
194 | /* |
195 | * copy a string with the given id |
196 | */ |
197 | static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen) |
198 | { |
199 | int len = usb_string(state->chip->dev, index, buf, maxlen - 1); |
200 | buf[len] = 0; |
201 | return len; |
202 | } |
203 | |
204 | /* |
205 | * convert from the byte/word on usb descriptor to the zero-based integer |
206 | */ |
207 | static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) |
208 | { |
209 | switch (cval->val_type) { |
210 | case USB_MIXER_BOOLEAN: |
211 | return !!val; |
212 | case USB_MIXER_INV_BOOLEAN: |
213 | return !val; |
214 | case USB_MIXER_U8: |
215 | val &= 0xff; |
216 | break; |
217 | case USB_MIXER_S8: |
218 | val &= 0xff; |
219 | if (val >= 0x80) |
220 | val -= 0x100; |
221 | break; |
222 | case USB_MIXER_U16: |
223 | val &= 0xffff; |
224 | break; |
225 | case USB_MIXER_S16: |
226 | val &= 0xffff; |
227 | if (val >= 0x8000) |
228 | val -= 0x10000; |
229 | break; |
230 | } |
231 | return val; |
232 | } |
233 | |
234 | /* |
235 | * convert from the zero-based int to the byte/word for usb descriptor |
236 | */ |
237 | static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) |
238 | { |
239 | switch (cval->val_type) { |
240 | case USB_MIXER_BOOLEAN: |
241 | return !!val; |
242 | case USB_MIXER_INV_BOOLEAN: |
243 | return !val; |
244 | case USB_MIXER_S8: |
245 | case USB_MIXER_U8: |
246 | return val & 0xff; |
247 | case USB_MIXER_S16: |
248 | case USB_MIXER_U16: |
249 | return val & 0xffff; |
250 | } |
251 | return 0; /* not reached */ |
252 | } |
253 | |
254 | static int get_relative_value(struct usb_mixer_elem_info *cval, int val) |
255 | { |
256 | if (! cval->res) |
257 | cval->res = 1; |
258 | if (val < cval->min) |
259 | return 0; |
260 | else if (val >= cval->max) |
261 | return (cval->max - cval->min + cval->res - 1) / cval->res; |
262 | else |
263 | return (val - cval->min) / cval->res; |
264 | } |
265 | |
266 | static int get_abs_value(struct usb_mixer_elem_info *cval, int val) |
267 | { |
268 | if (val < 0) |
269 | return cval->min; |
270 | if (! cval->res) |
271 | cval->res = 1; |
272 | val *= cval->res; |
273 | val += cval->min; |
274 | if (val > cval->max) |
275 | return cval->max; |
276 | return val; |
277 | } |
278 | |
279 | |
280 | /* |
281 | * retrieve a mixer value |
282 | */ |
283 | |
284 | static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) |
285 | { |
286 | struct snd_usb_audio *chip = cval->mixer->chip; |
287 | unsigned char buf[2]; |
288 | int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; |
289 | int timeout = 10; |
290 | int idx = 0, err; |
291 | |
292 | err = snd_usb_autoresume(cval->mixer->chip); |
293 | if (err < 0) |
294 | return -EIO; |
295 | down_read(&chip->shutdown_rwsem); |
296 | while (timeout-- > 0) { |
297 | if (chip->shutdown) |
298 | break; |
299 | idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); |
300 | if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request, |
301 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
302 | validx, idx, buf, val_len) >= val_len) { |
303 | *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); |
304 | err = 0; |
305 | goto out; |
306 | } |
307 | } |
308 | snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", |
309 | request, validx, idx, cval->val_type); |
310 | err = -EINVAL; |
311 | |
312 | out: |
313 | up_read(&chip->shutdown_rwsem); |
314 | snd_usb_autosuspend(cval->mixer->chip); |
315 | return err; |
316 | } |
317 | |
318 | static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) |
319 | { |
320 | struct snd_usb_audio *chip = cval->mixer->chip; |
321 | unsigned char buf[2 + 3*sizeof(__u16)]; /* enough space for one range */ |
322 | unsigned char *val; |
323 | int idx = 0, ret, size; |
324 | __u8 bRequest; |
325 | |
326 | if (request == UAC_GET_CUR) { |
327 | bRequest = UAC2_CS_CUR; |
328 | size = sizeof(__u16); |
329 | } else { |
330 | bRequest = UAC2_CS_RANGE; |
331 | size = sizeof(buf); |
332 | } |
333 | |
334 | memset(buf, 0, sizeof(buf)); |
335 | |
336 | ret = snd_usb_autoresume(chip) ? -EIO : 0; |
337 | if (ret) |
338 | goto error; |
339 | |
340 | down_read(&chip->shutdown_rwsem); |
341 | if (chip->shutdown) |
342 | ret = -ENODEV; |
343 | else { |
344 | idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); |
345 | ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest, |
346 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
347 | validx, idx, buf, size); |
348 | } |
349 | up_read(&chip->shutdown_rwsem); |
350 | snd_usb_autosuspend(chip); |
351 | |
352 | if (ret < 0) { |
353 | error: |
354 | snd_printk(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", |
355 | request, validx, idx, cval->val_type); |
356 | return ret; |
357 | } |
358 | |
359 | /* FIXME: how should we handle multiple triplets here? */ |
360 | |
361 | switch (request) { |
362 | case UAC_GET_CUR: |
363 | val = buf; |
364 | break; |
365 | case UAC_GET_MIN: |
366 | val = buf + sizeof(__u16); |
367 | break; |
368 | case UAC_GET_MAX: |
369 | val = buf + sizeof(__u16) * 2; |
370 | break; |
371 | case UAC_GET_RES: |
372 | val = buf + sizeof(__u16) * 3; |
373 | break; |
374 | default: |
375 | return -EINVAL; |
376 | } |
377 | |
378 | *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16))); |
379 | |
380 | return 0; |
381 | } |
382 | |
383 | static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) |
384 | { |
385 | validx += cval->idx_off; |
386 | |
387 | return (cval->mixer->protocol == UAC_VERSION_1) ? |
388 | get_ctl_value_v1(cval, request, validx, value_ret) : |
389 | get_ctl_value_v2(cval, request, validx, value_ret); |
390 | } |
391 | |
392 | static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value) |
393 | { |
394 | return get_ctl_value(cval, UAC_GET_CUR, validx, value); |
395 | } |
396 | |
397 | /* channel = 0: master, 1 = first channel */ |
398 | static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval, |
399 | int channel, int *value) |
400 | { |
401 | return get_ctl_value(cval, UAC_GET_CUR, (cval->control << 8) | channel, value); |
402 | } |
403 | |
404 | static int get_cur_mix_value(struct usb_mixer_elem_info *cval, |
405 | int channel, int index, int *value) |
406 | { |
407 | int err; |
408 | |
409 | if (cval->cached & (1 << channel)) { |
410 | *value = cval->cache_val[index]; |
411 | return 0; |
412 | } |
413 | err = get_cur_mix_raw(cval, channel, value); |
414 | if (err < 0) { |
415 | if (!cval->mixer->ignore_ctl_error) |
416 | snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", |
417 | cval->control, channel, err); |
418 | return err; |
419 | } |
420 | cval->cached |= 1 << channel; |
421 | cval->cache_val[index] = *value; |
422 | return 0; |
423 | } |
424 | |
425 | |
426 | /* |
427 | * set a mixer value |
428 | */ |
429 | |
430 | int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, |
431 | int request, int validx, int value_set) |
432 | { |
433 | struct snd_usb_audio *chip = cval->mixer->chip; |
434 | unsigned char buf[2]; |
435 | int idx = 0, val_len, err, timeout = 10; |
436 | |
437 | validx += cval->idx_off; |
438 | |
439 | if (cval->mixer->protocol == UAC_VERSION_1) { |
440 | val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; |
441 | } else { /* UAC_VERSION_2 */ |
442 | /* audio class v2 controls are always 2 bytes in size */ |
443 | val_len = sizeof(__u16); |
444 | |
445 | /* FIXME */ |
446 | if (request != UAC_SET_CUR) { |
447 | snd_printdd(KERN_WARNING "RANGE setting not yet supported\n"); |
448 | return -EINVAL; |
449 | } |
450 | |
451 | request = UAC2_CS_CUR; |
452 | } |
453 | |
454 | value_set = convert_bytes_value(cval, value_set); |
455 | buf[0] = value_set & 0xff; |
456 | buf[1] = (value_set >> 8) & 0xff; |
457 | err = snd_usb_autoresume(chip); |
458 | if (err < 0) |
459 | return -EIO; |
460 | down_read(&chip->shutdown_rwsem); |
461 | while (timeout-- > 0) { |
462 | if (chip->shutdown) |
463 | break; |
464 | idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); |
465 | if (snd_usb_ctl_msg(chip->dev, |
466 | usb_sndctrlpipe(chip->dev, 0), request, |
467 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, |
468 | validx, idx, buf, val_len) >= 0) { |
469 | err = 0; |
470 | goto out; |
471 | } |
472 | } |
473 | snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", |
474 | request, validx, idx, cval->val_type, buf[0], buf[1]); |
475 | err = -EINVAL; |
476 | |
477 | out: |
478 | up_read(&chip->shutdown_rwsem); |
479 | snd_usb_autosuspend(chip); |
480 | return err; |
481 | } |
482 | |
483 | static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value) |
484 | { |
485 | return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value); |
486 | } |
487 | |
488 | static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, |
489 | int index, int value) |
490 | { |
491 | int err; |
492 | unsigned int read_only = (channel == 0) ? |
493 | cval->master_readonly : |
494 | cval->ch_readonly & (1 << (channel - 1)); |
495 | |
496 | if (read_only) { |
497 | snd_printdd(KERN_INFO "%s(): channel %d of control %d is read_only\n", |
498 | __func__, channel, cval->control); |
499 | return 0; |
500 | } |
501 | |
502 | err = snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel, |
503 | value); |
504 | if (err < 0) |
505 | return err; |
506 | cval->cached |= 1 << channel; |
507 | cval->cache_val[index] = value; |
508 | return 0; |
509 | } |
510 | |
511 | /* |
512 | * TLV callback for mixer volume controls |
513 | */ |
514 | int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, |
515 | unsigned int size, unsigned int __user *_tlv) |
516 | { |
517 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
518 | DECLARE_TLV_DB_MINMAX(scale, 0, 0); |
519 | |
520 | if (size < sizeof(scale)) |
521 | return -ENOMEM; |
522 | scale[2] = cval->dBmin; |
523 | scale[3] = cval->dBmax; |
524 | if (copy_to_user(_tlv, scale, sizeof(scale))) |
525 | return -EFAULT; |
526 | return 0; |
527 | } |
528 | |
529 | /* |
530 | * parser routines begin here... |
531 | */ |
532 | |
533 | static int parse_audio_unit(struct mixer_build *state, int unitid); |
534 | |
535 | |
536 | /* |
537 | * check if the input/output channel routing is enabled on the given bitmap. |
538 | * used for mixer unit parser |
539 | */ |
540 | static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs) |
541 | { |
542 | int idx = ich * num_outs + och; |
543 | return bmap[idx >> 3] & (0x80 >> (idx & 7)); |
544 | } |
545 | |
546 | |
547 | /* |
548 | * add an alsa control element |
549 | * search and increment the index until an empty slot is found. |
550 | * |
551 | * if failed, give up and free the control instance. |
552 | */ |
553 | |
554 | int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer, |
555 | struct snd_kcontrol *kctl) |
556 | { |
557 | struct usb_mixer_elem_info *cval = kctl->private_data; |
558 | int err; |
559 | |
560 | while (snd_ctl_find_id(mixer->chip->card, &kctl->id)) |
561 | kctl->id.index++; |
562 | if ((err = snd_ctl_add(mixer->chip->card, kctl)) < 0) { |
563 | snd_printd(KERN_ERR "cannot add control (err = %d)\n", err); |
564 | return err; |
565 | } |
566 | cval->elem_id = &kctl->id; |
567 | cval->next_id_elem = mixer->id_elems[cval->id]; |
568 | mixer->id_elems[cval->id] = cval; |
569 | return 0; |
570 | } |
571 | |
572 | |
573 | /* |
574 | * get a terminal name string |
575 | */ |
576 | |
577 | static struct iterm_name_combo { |
578 | int type; |
579 | char *name; |
580 | } iterm_names[] = { |
581 | { 0x0300, "Output" }, |
582 | { 0x0301, "Speaker" }, |
583 | { 0x0302, "Headphone" }, |
584 | { 0x0303, "HMD Audio" }, |
585 | { 0x0304, "Desktop Speaker" }, |
586 | { 0x0305, "Room Speaker" }, |
587 | { 0x0306, "Com Speaker" }, |
588 | { 0x0307, "LFE" }, |
589 | { 0x0600, "External In" }, |
590 | { 0x0601, "Analog In" }, |
591 | { 0x0602, "Digital In" }, |
592 | { 0x0603, "Line" }, |
593 | { 0x0604, "Legacy In" }, |
594 | { 0x0605, "IEC958 In" }, |
595 | { 0x0606, "1394 DA Stream" }, |
596 | { 0x0607, "1394 DV Stream" }, |
597 | { 0x0700, "Embedded" }, |
598 | { 0x0701, "Noise Source" }, |
599 | { 0x0702, "Equalization Noise" }, |
600 | { 0x0703, "CD" }, |
601 | { 0x0704, "DAT" }, |
602 | { 0x0705, "DCC" }, |
603 | { 0x0706, "MiniDisk" }, |
604 | { 0x0707, "Analog Tape" }, |
605 | { 0x0708, "Phonograph" }, |
606 | { 0x0709, "VCR Audio" }, |
607 | { 0x070a, "Video Disk Audio" }, |
608 | { 0x070b, "DVD Audio" }, |
609 | { 0x070c, "TV Tuner Audio" }, |
610 | { 0x070d, "Satellite Rec Audio" }, |
611 | { 0x070e, "Cable Tuner Audio" }, |
612 | { 0x070f, "DSS Audio" }, |
613 | { 0x0710, "Radio Receiver" }, |
614 | { 0x0711, "Radio Transmitter" }, |
615 | { 0x0712, "Multi-Track Recorder" }, |
616 | { 0x0713, "Synthesizer" }, |
617 | { 0 }, |
618 | }; |
619 | |
620 | static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm, |
621 | unsigned char *name, int maxlen, int term_only) |
622 | { |
623 | struct iterm_name_combo *names; |
624 | |
625 | if (iterm->name) |
626 | return snd_usb_copy_string_desc(state, iterm->name, name, maxlen); |
627 | |
628 | /* virtual type - not a real terminal */ |
629 | if (iterm->type >> 16) { |
630 | if (term_only) |
631 | return 0; |
632 | switch (iterm->type >> 16) { |
633 | case UAC_SELECTOR_UNIT: |
634 | strcpy(name, "Selector"); return 8; |
635 | case UAC1_PROCESSING_UNIT: |
636 | strcpy(name, "Process Unit"); return 12; |
637 | case UAC1_EXTENSION_UNIT: |
638 | strcpy(name, "Ext Unit"); return 8; |
639 | case UAC_MIXER_UNIT: |
640 | strcpy(name, "Mixer"); return 5; |
641 | default: |
642 | return sprintf(name, "Unit %d", iterm->id); |
643 | } |
644 | } |
645 | |
646 | switch (iterm->type & 0xff00) { |
647 | case 0x0100: |
648 | strcpy(name, "PCM"); return 3; |
649 | case 0x0200: |
650 | strcpy(name, "Mic"); return 3; |
651 | case 0x0400: |
652 | strcpy(name, "Headset"); return 7; |
653 | case 0x0500: |
654 | strcpy(name, "Phone"); return 5; |
655 | } |
656 | |
657 | for (names = iterm_names; names->type; names++) |
658 | if (names->type == iterm->type) { |
659 | strcpy(name, names->name); |
660 | return strlen(names->name); |
661 | } |
662 | return 0; |
663 | } |
664 | |
665 | |
666 | /* |
667 | * parse the source unit recursively until it reaches to a terminal |
668 | * or a branched unit. |
669 | */ |
670 | static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term) |
671 | { |
672 | int err; |
673 | void *p1; |
674 | |
675 | memset(term, 0, sizeof(*term)); |
676 | while ((p1 = find_audio_control_unit(state, id)) != NULL) { |
677 | unsigned char *hdr = p1; |
678 | term->id = id; |
679 | switch (hdr[2]) { |
680 | case UAC_INPUT_TERMINAL: |
681 | if (state->mixer->protocol == UAC_VERSION_1) { |
682 | struct uac_input_terminal_descriptor *d = p1; |
683 | term->type = le16_to_cpu(d->wTerminalType); |
684 | term->channels = d->bNrChannels; |
685 | term->chconfig = le16_to_cpu(d->wChannelConfig); |
686 | term->name = d->iTerminal; |
687 | } else { /* UAC_VERSION_2 */ |
688 | struct uac2_input_terminal_descriptor *d = p1; |
689 | term->type = le16_to_cpu(d->wTerminalType); |
690 | term->channels = d->bNrChannels; |
691 | term->chconfig = le32_to_cpu(d->bmChannelConfig); |
692 | term->name = d->iTerminal; |
693 | |
694 | /* call recursively to get the clock selectors */ |
695 | err = check_input_term(state, d->bCSourceID, term); |
696 | if (err < 0) |
697 | return err; |
698 | } |
699 | return 0; |
700 | case UAC_FEATURE_UNIT: { |
701 | /* the header is the same for v1 and v2 */ |
702 | struct uac_feature_unit_descriptor *d = p1; |
703 | id = d->bSourceID; |
704 | break; /* continue to parse */ |
705 | } |
706 | case UAC_MIXER_UNIT: { |
707 | struct uac_mixer_unit_descriptor *d = p1; |
708 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ |
709 | term->channels = uac_mixer_unit_bNrChannels(d); |
710 | term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol); |
711 | term->name = uac_mixer_unit_iMixer(d); |
712 | return 0; |
713 | } |
714 | case UAC_SELECTOR_UNIT: |
715 | case UAC2_CLOCK_SELECTOR: { |
716 | struct uac_selector_unit_descriptor *d = p1; |
717 | /* call recursively to retrieve the channel info */ |
718 | err = check_input_term(state, d->baSourceID[0], term); |
719 | if (err < 0) |
720 | return err; |
721 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ |
722 | term->id = id; |
723 | term->name = uac_selector_unit_iSelector(d); |
724 | return 0; |
725 | } |
726 | case UAC1_PROCESSING_UNIT: |
727 | case UAC1_EXTENSION_UNIT: |
728 | /* UAC2_PROCESSING_UNIT_V2 */ |
729 | /* UAC2_EFFECT_UNIT */ |
730 | case UAC2_EXTENSION_UNIT_V2: { |
731 | struct uac_processing_unit_descriptor *d = p1; |
732 | |
733 | if (state->mixer->protocol == UAC_VERSION_2 && |
734 | hdr[2] == UAC2_EFFECT_UNIT) { |
735 | /* UAC2/UAC1 unit IDs overlap here in an |
736 | * uncompatible way. Ignore this unit for now. |
737 | */ |
738 | return 0; |
739 | } |
740 | |
741 | if (d->bNrInPins) { |
742 | id = d->baSourceID[0]; |
743 | break; /* continue to parse */ |
744 | } |
745 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ |
746 | term->channels = uac_processing_unit_bNrChannels(d); |
747 | term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol); |
748 | term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol); |
749 | return 0; |
750 | } |
751 | case UAC2_CLOCK_SOURCE: { |
752 | struct uac_clock_source_descriptor *d = p1; |
753 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ |
754 | term->id = id; |
755 | term->name = d->iClockSource; |
756 | return 0; |
757 | } |
758 | default: |
759 | return -ENODEV; |
760 | } |
761 | } |
762 | return -ENODEV; |
763 | } |
764 | |
765 | |
766 | /* |
767 | * Feature Unit |
768 | */ |
769 | |
770 | /* feature unit control information */ |
771 | struct usb_feature_control_info { |
772 | const char *name; |
773 | unsigned int type; /* control type (mute, volume, etc.) */ |
774 | }; |
775 | |
776 | static struct usb_feature_control_info audio_feature_info[] = { |
777 | { "Mute", USB_MIXER_INV_BOOLEAN }, |
778 | { "Volume", USB_MIXER_S16 }, |
779 | { "Tone Control - Bass", USB_MIXER_S8 }, |
780 | { "Tone Control - Mid", USB_MIXER_S8 }, |
781 | { "Tone Control - Treble", USB_MIXER_S8 }, |
782 | { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */ |
783 | { "Auto Gain Control", USB_MIXER_BOOLEAN }, |
784 | { "Delay Control", USB_MIXER_U16 }, |
785 | { "Bass Boost", USB_MIXER_BOOLEAN }, |
786 | { "Loudness", USB_MIXER_BOOLEAN }, |
787 | /* UAC2 specific */ |
788 | { "Input Gain Control", USB_MIXER_U16 }, |
789 | { "Input Gain Pad Control", USB_MIXER_BOOLEAN }, |
790 | { "Phase Inverter Control", USB_MIXER_BOOLEAN }, |
791 | }; |
792 | |
793 | |
794 | /* private_free callback */ |
795 | static void usb_mixer_elem_free(struct snd_kcontrol *kctl) |
796 | { |
797 | kfree(kctl->private_data); |
798 | kctl->private_data = NULL; |
799 | } |
800 | |
801 | |
802 | /* |
803 | * interface to ALSA control for feature/mixer units |
804 | */ |
805 | |
806 | /* volume control quirks */ |
807 | static void volume_control_quirks(struct usb_mixer_elem_info *cval, |
808 | struct snd_kcontrol *kctl) |
809 | { |
810 | switch (cval->mixer->chip->usb_id) { |
811 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
812 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
813 | if (strcmp(kctl->id.name, "Effect Duration") == 0) { |
814 | cval->min = 0x0000; |
815 | cval->max = 0xffff; |
816 | cval->res = 0x00e6; |
817 | break; |
818 | } |
819 | if (strcmp(kctl->id.name, "Effect Volume") == 0 || |
820 | strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { |
821 | cval->min = 0x00; |
822 | cval->max = 0xff; |
823 | break; |
824 | } |
825 | if (strstr(kctl->id.name, "Effect Return") != NULL) { |
826 | cval->min = 0xb706; |
827 | cval->max = 0xff7b; |
828 | cval->res = 0x0073; |
829 | break; |
830 | } |
831 | if ((strstr(kctl->id.name, "Playback Volume") != NULL) || |
832 | (strstr(kctl->id.name, "Effect Send") != NULL)) { |
833 | cval->min = 0xb5fb; /* -73 dB = 0xb6ff */ |
834 | cval->max = 0xfcfe; |
835 | cval->res = 0x0073; |
836 | } |
837 | break; |
838 | |
839 | case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */ |
840 | case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */ |
841 | if (strcmp(kctl->id.name, "Effect Duration") == 0) { |
842 | snd_printk(KERN_INFO |
843 | "usb-audio: set quirk for FTU Effect Duration\n"); |
844 | cval->min = 0x0000; |
845 | cval->max = 0x7f00; |
846 | cval->res = 0x0100; |
847 | break; |
848 | } |
849 | if (strcmp(kctl->id.name, "Effect Volume") == 0 || |
850 | strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { |
851 | snd_printk(KERN_INFO |
852 | "usb-audio: set quirks for FTU Effect Feedback/Volume\n"); |
853 | cval->min = 0x00; |
854 | cval->max = 0x7f; |
855 | break; |
856 | } |
857 | break; |
858 | |
859 | case USB_ID(0x0471, 0x0101): |
860 | case USB_ID(0x0471, 0x0104): |
861 | case USB_ID(0x0471, 0x0105): |
862 | case USB_ID(0x0672, 0x1041): |
863 | /* quirk for UDA1321/N101. |
864 | * note that detection between firmware 2.1.1.7 (N101) |
865 | * and later 2.1.1.21 is not very clear from datasheets. |
866 | * I hope that the min value is -15360 for newer firmware --jk |
867 | */ |
868 | if (!strcmp(kctl->id.name, "PCM Playback Volume") && |
869 | cval->min == -15616) { |
870 | snd_printk(KERN_INFO |
871 | "set volume quirk for UDA1321/N101 chip\n"); |
872 | cval->max = -256; |
873 | } |
874 | break; |
875 | |
876 | case USB_ID(0x046d, 0x09a4): |
877 | if (!strcmp(kctl->id.name, "Mic Capture Volume")) { |
878 | snd_printk(KERN_INFO |
879 | "set volume quirk for QuickCam E3500\n"); |
880 | cval->min = 6080; |
881 | cval->max = 8768; |
882 | cval->res = 192; |
883 | } |
884 | break; |
885 | |
886 | case USB_ID(0x046d, 0x0808): |
887 | case USB_ID(0x046d, 0x0809): |
888 | case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ |
889 | case USB_ID(0x046d, 0x0991): |
890 | /* Most audio usb devices lie about volume resolution. |
891 | * Most Logitech webcams have res = 384. |
892 | * Proboly there is some logitech magic behind this number --fishor |
893 | */ |
894 | if (!strcmp(kctl->id.name, "Mic Capture Volume")) { |
895 | snd_printk(KERN_INFO |
896 | "set resolution quirk: cval->res = 384\n"); |
897 | cval->res = 384; |
898 | } |
899 | break; |
900 | |
901 | } |
902 | } |
903 | |
904 | /* |
905 | * retrieve the minimum and maximum values for the specified control |
906 | */ |
907 | static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval, |
908 | int default_min, struct snd_kcontrol *kctl) |
909 | { |
910 | /* for failsafe */ |
911 | cval->min = default_min; |
912 | cval->max = cval->min + 1; |
913 | cval->res = 1; |
914 | cval->dBmin = cval->dBmax = 0; |
915 | |
916 | if (cval->val_type == USB_MIXER_BOOLEAN || |
917 | cval->val_type == USB_MIXER_INV_BOOLEAN) { |
918 | cval->initialized = 1; |
919 | } else { |
920 | int minchn = 0; |
921 | if (cval->cmask) { |
922 | int i; |
923 | for (i = 0; i < MAX_CHANNELS; i++) |
924 | if (cval->cmask & (1 << i)) { |
925 | minchn = i + 1; |
926 | break; |
927 | } |
928 | } |
929 | if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || |
930 | get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { |
931 | snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n", |
932 | cval->id, snd_usb_ctrl_intf(cval->mixer->chip), cval->control, cval->id); |
933 | return -EINVAL; |
934 | } |
935 | if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) { |
936 | cval->res = 1; |
937 | } else { |
938 | int last_valid_res = cval->res; |
939 | |
940 | while (cval->res > 1) { |
941 | if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES, |
942 | (cval->control << 8) | minchn, cval->res / 2) < 0) |
943 | break; |
944 | cval->res /= 2; |
945 | } |
946 | if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) |
947 | cval->res = last_valid_res; |
948 | } |
949 | if (cval->res == 0) |
950 | cval->res = 1; |
951 | |
952 | /* Additional checks for the proper resolution |
953 | * |
954 | * Some devices report smaller resolutions than actually |
955 | * reacting. They don't return errors but simply clip |
956 | * to the lower aligned value. |
957 | */ |
958 | if (cval->min + cval->res < cval->max) { |
959 | int last_valid_res = cval->res; |
960 | int saved, test, check; |
961 | get_cur_mix_raw(cval, minchn, &saved); |
962 | for (;;) { |
963 | test = saved; |
964 | if (test < cval->max) |
965 | test += cval->res; |
966 | else |
967 | test -= cval->res; |
968 | if (test < cval->min || test > cval->max || |
969 | set_cur_mix_value(cval, minchn, 0, test) || |
970 | get_cur_mix_raw(cval, minchn, &check)) { |
971 | cval->res = last_valid_res; |
972 | break; |
973 | } |
974 | if (test == check) |
975 | break; |
976 | cval->res *= 2; |
977 | } |
978 | set_cur_mix_value(cval, minchn, 0, saved); |
979 | } |
980 | |
981 | cval->initialized = 1; |
982 | } |
983 | |
984 | if (kctl) |
985 | volume_control_quirks(cval, kctl); |
986 | |
987 | /* USB descriptions contain the dB scale in 1/256 dB unit |
988 | * while ALSA TLV contains in 1/100 dB unit |
989 | */ |
990 | cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256; |
991 | cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256; |
992 | if (cval->dBmin > cval->dBmax) { |
993 | /* something is wrong; assume it's either from/to 0dB */ |
994 | if (cval->dBmin < 0) |
995 | cval->dBmax = 0; |
996 | else if (cval->dBmin > 0) |
997 | cval->dBmin = 0; |
998 | if (cval->dBmin > cval->dBmax) { |
999 | /* totally crap, return an error */ |
1000 | return -EINVAL; |
1001 | } |
1002 | } |
1003 | |
1004 | return 0; |
1005 | } |
1006 | |
1007 | #define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL) |
1008 | |
1009 | /* get a feature/mixer unit info */ |
1010 | static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) |
1011 | { |
1012 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1013 | |
1014 | if (cval->val_type == USB_MIXER_BOOLEAN || |
1015 | cval->val_type == USB_MIXER_INV_BOOLEAN) |
1016 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
1017 | else |
1018 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
1019 | uinfo->count = cval->channels; |
1020 | if (cval->val_type == USB_MIXER_BOOLEAN || |
1021 | cval->val_type == USB_MIXER_INV_BOOLEAN) { |
1022 | uinfo->value.integer.min = 0; |
1023 | uinfo->value.integer.max = 1; |
1024 | } else { |
1025 | if (!cval->initialized) { |
1026 | get_min_max_with_quirks(cval, 0, kcontrol); |
1027 | if (cval->initialized && cval->dBmin >= cval->dBmax) { |
1028 | kcontrol->vd[0].access &= |
1029 | ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ | |
1030 | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK); |
1031 | snd_ctl_notify(cval->mixer->chip->card, |
1032 | SNDRV_CTL_EVENT_MASK_INFO, |
1033 | &kcontrol->id); |
1034 | } |
1035 | } |
1036 | uinfo->value.integer.min = 0; |
1037 | uinfo->value.integer.max = |
1038 | (cval->max - cval->min + cval->res - 1) / cval->res; |
1039 | } |
1040 | return 0; |
1041 | } |
1042 | |
1043 | /* get the current value from feature/mixer unit */ |
1044 | static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1045 | { |
1046 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1047 | int c, cnt, val, err; |
1048 | |
1049 | ucontrol->value.integer.value[0] = cval->min; |
1050 | if (cval->cmask) { |
1051 | cnt = 0; |
1052 | for (c = 0; c < MAX_CHANNELS; c++) { |
1053 | if (!(cval->cmask & (1 << c))) |
1054 | continue; |
1055 | err = get_cur_mix_value(cval, c + 1, cnt, &val); |
1056 | if (err < 0) |
1057 | return cval->mixer->ignore_ctl_error ? 0 : err; |
1058 | val = get_relative_value(cval, val); |
1059 | ucontrol->value.integer.value[cnt] = val; |
1060 | cnt++; |
1061 | } |
1062 | return 0; |
1063 | } else { |
1064 | /* master channel */ |
1065 | err = get_cur_mix_value(cval, 0, 0, &val); |
1066 | if (err < 0) |
1067 | return cval->mixer->ignore_ctl_error ? 0 : err; |
1068 | val = get_relative_value(cval, val); |
1069 | ucontrol->value.integer.value[0] = val; |
1070 | } |
1071 | return 0; |
1072 | } |
1073 | |
1074 | /* put the current value to feature/mixer unit */ |
1075 | static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1076 | { |
1077 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1078 | int c, cnt, val, oval, err; |
1079 | int changed = 0; |
1080 | |
1081 | if (cval->cmask) { |
1082 | cnt = 0; |
1083 | for (c = 0; c < MAX_CHANNELS; c++) { |
1084 | if (!(cval->cmask & (1 << c))) |
1085 | continue; |
1086 | err = get_cur_mix_value(cval, c + 1, cnt, &oval); |
1087 | if (err < 0) |
1088 | return cval->mixer->ignore_ctl_error ? 0 : err; |
1089 | val = ucontrol->value.integer.value[cnt]; |
1090 | val = get_abs_value(cval, val); |
1091 | if (oval != val) { |
1092 | set_cur_mix_value(cval, c + 1, cnt, val); |
1093 | changed = 1; |
1094 | } |
1095 | cnt++; |
1096 | } |
1097 | } else { |
1098 | /* master channel */ |
1099 | err = get_cur_mix_value(cval, 0, 0, &oval); |
1100 | if (err < 0) |
1101 | return cval->mixer->ignore_ctl_error ? 0 : err; |
1102 | val = ucontrol->value.integer.value[0]; |
1103 | val = get_abs_value(cval, val); |
1104 | if (val != oval) { |
1105 | set_cur_mix_value(cval, 0, 0, val); |
1106 | changed = 1; |
1107 | } |
1108 | } |
1109 | return changed; |
1110 | } |
1111 | |
1112 | static struct snd_kcontrol_new usb_feature_unit_ctl = { |
1113 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1114 | .name = "", /* will be filled later manually */ |
1115 | .info = mixer_ctl_feature_info, |
1116 | .get = mixer_ctl_feature_get, |
1117 | .put = mixer_ctl_feature_put, |
1118 | }; |
1119 | |
1120 | /* the read-only variant */ |
1121 | static struct snd_kcontrol_new usb_feature_unit_ctl_ro = { |
1122 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1123 | .name = "", /* will be filled later manually */ |
1124 | .info = mixer_ctl_feature_info, |
1125 | .get = mixer_ctl_feature_get, |
1126 | .put = NULL, |
1127 | }; |
1128 | |
1129 | /* This symbol is exported in order to allow the mixer quirks to |
1130 | * hook up to the standard feature unit control mechanism */ |
1131 | struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; |
1132 | |
1133 | /* |
1134 | * build a feature control |
1135 | */ |
1136 | |
1137 | static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str) |
1138 | { |
1139 | return strlcat(kctl->id.name, str, sizeof(kctl->id.name)); |
1140 | } |
1141 | |
1142 | /* A lot of headsets/headphones have a "Speaker" mixer. Make sure we |
1143 | rename it to "Headphone". We determine if something is a headphone |
1144 | similar to how udev determines form factor. */ |
1145 | static void check_no_speaker_on_headset(struct snd_kcontrol *kctl, |
1146 | struct snd_card *card) |
1147 | { |
1148 | const char *names_to_check[] = { |
1149 | "Headset", "headset", "Headphone", "headphone", NULL}; |
1150 | const char **s; |
1151 | bool found = 0; |
1152 | |
1153 | if (strcmp("Speaker", kctl->id.name)) |
1154 | return; |
1155 | |
1156 | for (s = names_to_check; *s; s++) |
1157 | if (strstr(card->shortname, *s)) { |
1158 | found = 1; |
1159 | break; |
1160 | } |
1161 | |
1162 | if (!found) |
1163 | return; |
1164 | |
1165 | strlcpy(kctl->id.name, "Headphone", sizeof(kctl->id.name)); |
1166 | } |
1167 | |
1168 | static void build_feature_ctl(struct mixer_build *state, void *raw_desc, |
1169 | unsigned int ctl_mask, int control, |
1170 | struct usb_audio_term *iterm, int unitid, |
1171 | int readonly_mask) |
1172 | { |
1173 | struct uac_feature_unit_descriptor *desc = raw_desc; |
1174 | unsigned int len = 0; |
1175 | int mapped_name = 0; |
1176 | int nameid = uac_feature_unit_iFeature(desc); |
1177 | struct snd_kcontrol *kctl; |
1178 | struct usb_mixer_elem_info *cval; |
1179 | const struct usbmix_name_map *map; |
1180 | unsigned int range; |
1181 | |
1182 | control++; /* change from zero-based to 1-based value */ |
1183 | |
1184 | if (control == UAC_FU_GRAPHIC_EQUALIZER) { |
1185 | /* FIXME: not supported yet */ |
1186 | return; |
1187 | } |
1188 | |
1189 | map = find_map(state, unitid, control); |
1190 | if (check_ignored_ctl(map)) |
1191 | return; |
1192 | |
1193 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
1194 | if (! cval) { |
1195 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
1196 | return; |
1197 | } |
1198 | cval->mixer = state->mixer; |
1199 | cval->id = unitid; |
1200 | cval->control = control; |
1201 | cval->cmask = ctl_mask; |
1202 | cval->val_type = audio_feature_info[control-1].type; |
1203 | if (ctl_mask == 0) { |
1204 | cval->channels = 1; /* master channel */ |
1205 | cval->master_readonly = readonly_mask; |
1206 | } else { |
1207 | int i, c = 0; |
1208 | for (i = 0; i < 16; i++) |
1209 | if (ctl_mask & (1 << i)) |
1210 | c++; |
1211 | cval->channels = c; |
1212 | cval->ch_readonly = readonly_mask; |
1213 | } |
1214 | |
1215 | /* if all channels in the mask are marked read-only, make the control |
1216 | * read-only. set_cur_mix_value() will check the mask again and won't |
1217 | * issue write commands to read-only channels. */ |
1218 | if (cval->channels == readonly_mask) |
1219 | kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval); |
1220 | else |
1221 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); |
1222 | |
1223 | if (! kctl) { |
1224 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
1225 | kfree(cval); |
1226 | return; |
1227 | } |
1228 | kctl->private_free = usb_mixer_elem_free; |
1229 | |
1230 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
1231 | mapped_name = len != 0; |
1232 | if (! len && nameid) |
1233 | len = snd_usb_copy_string_desc(state, nameid, |
1234 | kctl->id.name, sizeof(kctl->id.name)); |
1235 | |
1236 | switch (control) { |
1237 | case UAC_FU_MUTE: |
1238 | case UAC_FU_VOLUME: |
1239 | /* determine the control name. the rule is: |
1240 | * - if a name id is given in descriptor, use it. |
1241 | * - if the connected input can be determined, then use the name |
1242 | * of terminal type. |
1243 | * - if the connected output can be determined, use it. |
1244 | * - otherwise, anonymous name. |
1245 | */ |
1246 | if (! len) { |
1247 | len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1); |
1248 | if (! len) |
1249 | len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1); |
1250 | if (! len) |
1251 | len = snprintf(kctl->id.name, sizeof(kctl->id.name), |
1252 | "Feature %d", unitid); |
1253 | } |
1254 | |
1255 | if (!mapped_name) |
1256 | check_no_speaker_on_headset(kctl, state->mixer->chip->card); |
1257 | |
1258 | /* determine the stream direction: |
1259 | * if the connected output is USB stream, then it's likely a |
1260 | * capture stream. otherwise it should be playback (hopefully :) |
1261 | */ |
1262 | if (! mapped_name && ! (state->oterm.type >> 16)) { |
1263 | if ((state->oterm.type & 0xff00) == 0x0100) { |
1264 | len = append_ctl_name(kctl, " Capture"); |
1265 | } else { |
1266 | len = append_ctl_name(kctl, " Playback"); |
1267 | } |
1268 | } |
1269 | append_ctl_name(kctl, control == UAC_FU_MUTE ? |
1270 | " Switch" : " Volume"); |
1271 | break; |
1272 | default: |
1273 | if (! len) |
1274 | strlcpy(kctl->id.name, audio_feature_info[control-1].name, |
1275 | sizeof(kctl->id.name)); |
1276 | break; |
1277 | } |
1278 | |
1279 | /* get min/max values */ |
1280 | get_min_max_with_quirks(cval, 0, kctl); |
1281 | |
1282 | if (control == UAC_FU_VOLUME) { |
1283 | check_mapped_dB(map, cval); |
1284 | if (cval->dBmin < cval->dBmax || !cval->initialized) { |
1285 | kctl->tlv.c = snd_usb_mixer_vol_tlv; |
1286 | kctl->vd[0].access |= |
1287 | SNDRV_CTL_ELEM_ACCESS_TLV_READ | |
1288 | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; |
1289 | } |
1290 | } |
1291 | |
1292 | range = (cval->max - cval->min) / cval->res; |
1293 | /* Are there devices with volume range more than 255? I use a bit more |
1294 | * to be sure. 384 is a resolution magic number found on Logitech |
1295 | * devices. It will definitively catch all buggy Logitech devices. |
1296 | */ |
1297 | if (range > 384) { |
1298 | snd_printk(KERN_WARNING "usb_audio: Warning! Unlikely big " |
1299 | "volume range (=%u), cval->res is probably wrong.", |
1300 | range); |
1301 | snd_printk(KERN_WARNING "usb_audio: [%d] FU [%s] ch = %d, " |
1302 | "val = %d/%d/%d", cval->id, |
1303 | kctl->id.name, cval->channels, |
1304 | cval->min, cval->max, cval->res); |
1305 | } |
1306 | |
1307 | snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", |
1308 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res); |
1309 | snd_usb_mixer_add_control(state->mixer, kctl); |
1310 | } |
1311 | |
1312 | |
1313 | |
1314 | /* |
1315 | * parse a feature unit |
1316 | * |
1317 | * most of controls are defined here. |
1318 | */ |
1319 | static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void *_ftr) |
1320 | { |
1321 | int channels, i, j; |
1322 | struct usb_audio_term iterm; |
1323 | unsigned int master_bits, first_ch_bits; |
1324 | int err, csize; |
1325 | struct uac_feature_unit_descriptor *hdr = _ftr; |
1326 | __u8 *bmaControls; |
1327 | |
1328 | if (state->mixer->protocol == UAC_VERSION_1) { |
1329 | csize = hdr->bControlSize; |
1330 | if (!csize) { |
1331 | snd_printdd(KERN_ERR "usbaudio: unit %u: " |
1332 | "invalid bControlSize == 0\n", unitid); |
1333 | return -EINVAL; |
1334 | } |
1335 | channels = (hdr->bLength - 7) / csize - 1; |
1336 | bmaControls = hdr->bmaControls; |
1337 | if (hdr->bLength < 7 + csize) { |
1338 | snd_printk(KERN_ERR "usbaudio: unit %u: " |
1339 | "invalid UAC_FEATURE_UNIT descriptor\n", |
1340 | unitid); |
1341 | return -EINVAL; |
1342 | } |
1343 | } else { |
1344 | struct uac2_feature_unit_descriptor *ftr = _ftr; |
1345 | csize = 4; |
1346 | channels = (hdr->bLength - 6) / 4 - 1; |
1347 | bmaControls = ftr->bmaControls; |
1348 | if (hdr->bLength < 6 + csize) { |
1349 | snd_printk(KERN_ERR "usbaudio: unit %u: " |
1350 | "invalid UAC_FEATURE_UNIT descriptor\n", |
1351 | unitid); |
1352 | return -EINVAL; |
1353 | } |
1354 | } |
1355 | |
1356 | /* parse the source unit */ |
1357 | if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0) |
1358 | return err; |
1359 | |
1360 | /* determine the input source type and name */ |
1361 | err = check_input_term(state, hdr->bSourceID, &iterm); |
1362 | if (err < 0) |
1363 | return err; |
1364 | |
1365 | master_bits = snd_usb_combine_bytes(bmaControls, csize); |
1366 | /* master configuration quirks */ |
1367 | switch (state->chip->usb_id) { |
1368 | case USB_ID(0x08bb, 0x2702): |
1369 | snd_printk(KERN_INFO |
1370 | "usbmixer: master volume quirk for PCM2702 chip\n"); |
1371 | /* disable non-functional volume control */ |
1372 | master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); |
1373 | break; |
1374 | case USB_ID(0x1130, 0xf211): |
1375 | snd_printk(KERN_INFO |
1376 | "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n"); |
1377 | /* disable non-functional volume control */ |
1378 | channels = 0; |
1379 | break; |
1380 | |
1381 | } |
1382 | if (channels > 0) |
1383 | first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize); |
1384 | else |
1385 | first_ch_bits = 0; |
1386 | |
1387 | if (state->mixer->protocol == UAC_VERSION_1) { |
1388 | /* check all control types */ |
1389 | for (i = 0; i < 10; i++) { |
1390 | unsigned int ch_bits = 0; |
1391 | for (j = 0; j < channels; j++) { |
1392 | unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize); |
1393 | if (mask & (1 << i)) |
1394 | ch_bits |= (1 << j); |
1395 | } |
1396 | /* audio class v1 controls are never read-only */ |
1397 | if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ |
1398 | build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, 0); |
1399 | if (master_bits & (1 << i)) |
1400 | build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 0); |
1401 | } |
1402 | } else { /* UAC_VERSION_2 */ |
1403 | for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) { |
1404 | unsigned int ch_bits = 0; |
1405 | unsigned int ch_read_only = 0; |
1406 | |
1407 | for (j = 0; j < channels; j++) { |
1408 | unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize); |
1409 | if (uac2_control_is_readable(mask, i)) { |
1410 | ch_bits |= (1 << j); |
1411 | if (!uac2_control_is_writeable(mask, i)) |
1412 | ch_read_only |= (1 << j); |
1413 | } |
1414 | } |
1415 | |
1416 | /* NOTE: build_feature_ctl() will mark the control read-only if all channels |
1417 | * are marked read-only in the descriptors. Otherwise, the control will be |
1418 | * reported as writeable, but the driver will not actually issue a write |
1419 | * command for read-only channels */ |
1420 | if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ |
1421 | build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, ch_read_only); |
1422 | if (uac2_control_is_readable(master_bits, i)) |
1423 | build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, |
1424 | !uac2_control_is_writeable(master_bits, i)); |
1425 | } |
1426 | } |
1427 | |
1428 | return 0; |
1429 | } |
1430 | |
1431 | |
1432 | /* |
1433 | * Mixer Unit |
1434 | */ |
1435 | |
1436 | /* |
1437 | * build a mixer unit control |
1438 | * |
1439 | * the callbacks are identical with feature unit. |
1440 | * input channel number (zero based) is given in control field instead. |
1441 | */ |
1442 | |
1443 | static void build_mixer_unit_ctl(struct mixer_build *state, |
1444 | struct uac_mixer_unit_descriptor *desc, |
1445 | int in_pin, int in_ch, int unitid, |
1446 | struct usb_audio_term *iterm) |
1447 | { |
1448 | struct usb_mixer_elem_info *cval; |
1449 | unsigned int num_outs = uac_mixer_unit_bNrChannels(desc); |
1450 | unsigned int i, len; |
1451 | struct snd_kcontrol *kctl; |
1452 | const struct usbmix_name_map *map; |
1453 | |
1454 | map = find_map(state, unitid, 0); |
1455 | if (check_ignored_ctl(map)) |
1456 | return; |
1457 | |
1458 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
1459 | if (! cval) |
1460 | return; |
1461 | |
1462 | cval->mixer = state->mixer; |
1463 | cval->id = unitid; |
1464 | cval->control = in_ch + 1; /* based on 1 */ |
1465 | cval->val_type = USB_MIXER_S16; |
1466 | for (i = 0; i < num_outs; i++) { |
1467 | if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), in_ch, i, num_outs)) { |
1468 | cval->cmask |= (1 << i); |
1469 | cval->channels++; |
1470 | } |
1471 | } |
1472 | |
1473 | /* get min/max values */ |
1474 | get_min_max(cval, 0); |
1475 | |
1476 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); |
1477 | if (! kctl) { |
1478 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
1479 | kfree(cval); |
1480 | return; |
1481 | } |
1482 | kctl->private_free = usb_mixer_elem_free; |
1483 | |
1484 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
1485 | if (! len) |
1486 | len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0); |
1487 | if (! len) |
1488 | len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); |
1489 | append_ctl_name(kctl, " Volume"); |
1490 | |
1491 | snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n", |
1492 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max); |
1493 | snd_usb_mixer_add_control(state->mixer, kctl); |
1494 | } |
1495 | |
1496 | |
1497 | /* |
1498 | * parse a mixer unit |
1499 | */ |
1500 | static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *raw_desc) |
1501 | { |
1502 | struct uac_mixer_unit_descriptor *desc = raw_desc; |
1503 | struct usb_audio_term iterm; |
1504 | int input_pins, num_ins, num_outs; |
1505 | int pin, ich, err; |
1506 | |
1507 | if (desc->bLength < 11 || ! (input_pins = desc->bNrInPins) || ! (num_outs = uac_mixer_unit_bNrChannels(desc))) { |
1508 | snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid); |
1509 | return -EINVAL; |
1510 | } |
1511 | /* no bmControls field (e.g. Maya44) -> ignore */ |
1512 | if (desc->bLength <= 10 + input_pins) { |
1513 | snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid); |
1514 | return 0; |
1515 | } |
1516 | |
1517 | num_ins = 0; |
1518 | ich = 0; |
1519 | for (pin = 0; pin < input_pins; pin++) { |
1520 | err = parse_audio_unit(state, desc->baSourceID[pin]); |
1521 | if (err < 0) |
1522 | continue; |
1523 | err = check_input_term(state, desc->baSourceID[pin], &iterm); |
1524 | if (err < 0) |
1525 | return err; |
1526 | num_ins += iterm.channels; |
1527 | for (; ich < num_ins; ++ich) { |
1528 | int och, ich_has_controls = 0; |
1529 | |
1530 | for (och = 0; och < num_outs; ++och) { |
1531 | if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), |
1532 | ich, och, num_outs)) { |
1533 | ich_has_controls = 1; |
1534 | break; |
1535 | } |
1536 | } |
1537 | if (ich_has_controls) |
1538 | build_mixer_unit_ctl(state, desc, pin, ich, |
1539 | unitid, &iterm); |
1540 | } |
1541 | } |
1542 | return 0; |
1543 | } |
1544 | |
1545 | |
1546 | /* |
1547 | * Processing Unit / Extension Unit |
1548 | */ |
1549 | |
1550 | /* get callback for processing/extension unit */ |
1551 | static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1552 | { |
1553 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1554 | int err, val; |
1555 | |
1556 | err = get_cur_ctl_value(cval, cval->control << 8, &val); |
1557 | if (err < 0 && cval->mixer->ignore_ctl_error) { |
1558 | ucontrol->value.integer.value[0] = cval->min; |
1559 | return 0; |
1560 | } |
1561 | if (err < 0) |
1562 | return err; |
1563 | val = get_relative_value(cval, val); |
1564 | ucontrol->value.integer.value[0] = val; |
1565 | return 0; |
1566 | } |
1567 | |
1568 | /* put callback for processing/extension unit */ |
1569 | static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1570 | { |
1571 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1572 | int val, oval, err; |
1573 | |
1574 | err = get_cur_ctl_value(cval, cval->control << 8, &oval); |
1575 | if (err < 0) { |
1576 | if (cval->mixer->ignore_ctl_error) |
1577 | return 0; |
1578 | return err; |
1579 | } |
1580 | val = ucontrol->value.integer.value[0]; |
1581 | val = get_abs_value(cval, val); |
1582 | if (val != oval) { |
1583 | set_cur_ctl_value(cval, cval->control << 8, val); |
1584 | return 1; |
1585 | } |
1586 | return 0; |
1587 | } |
1588 | |
1589 | /* alsa control interface for processing/extension unit */ |
1590 | static struct snd_kcontrol_new mixer_procunit_ctl = { |
1591 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1592 | .name = "", /* will be filled later */ |
1593 | .info = mixer_ctl_feature_info, |
1594 | .get = mixer_ctl_procunit_get, |
1595 | .put = mixer_ctl_procunit_put, |
1596 | }; |
1597 | |
1598 | |
1599 | /* |
1600 | * predefined data for processing units |
1601 | */ |
1602 | struct procunit_value_info { |
1603 | int control; |
1604 | char *suffix; |
1605 | int val_type; |
1606 | int min_value; |
1607 | }; |
1608 | |
1609 | struct procunit_info { |
1610 | int type; |
1611 | char *name; |
1612 | struct procunit_value_info *values; |
1613 | }; |
1614 | |
1615 | static struct procunit_value_info updown_proc_info[] = { |
1616 | { UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1617 | { UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, |
1618 | { 0 } |
1619 | }; |
1620 | static struct procunit_value_info prologic_proc_info[] = { |
1621 | { UAC_DP_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1622 | { UAC_DP_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, |
1623 | { 0 } |
1624 | }; |
1625 | static struct procunit_value_info threed_enh_proc_info[] = { |
1626 | { UAC_3D_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1627 | { UAC_3D_SPACE, "Spaciousness", USB_MIXER_U8 }, |
1628 | { 0 } |
1629 | }; |
1630 | static struct procunit_value_info reverb_proc_info[] = { |
1631 | { UAC_REVERB_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1632 | { UAC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, |
1633 | { UAC_REVERB_TIME, "Time", USB_MIXER_U16 }, |
1634 | { UAC_REVERB_FEEDBACK, "Feedback", USB_MIXER_U8 }, |
1635 | { 0 } |
1636 | }; |
1637 | static struct procunit_value_info chorus_proc_info[] = { |
1638 | { UAC_CHORUS_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1639 | { UAC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, |
1640 | { UAC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, |
1641 | { UAC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, |
1642 | { 0 } |
1643 | }; |
1644 | static struct procunit_value_info dcr_proc_info[] = { |
1645 | { UAC_DCR_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1646 | { UAC_DCR_RATE, "Ratio", USB_MIXER_U16 }, |
1647 | { UAC_DCR_MAXAMPL, "Max Amp", USB_MIXER_S16 }, |
1648 | { UAC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, |
1649 | { UAC_DCR_ATTACK_TIME, "Attack Time", USB_MIXER_U16 }, |
1650 | { UAC_DCR_RELEASE_TIME, "Release Time", USB_MIXER_U16 }, |
1651 | { 0 } |
1652 | }; |
1653 | |
1654 | static struct procunit_info procunits[] = { |
1655 | { UAC_PROCESS_UP_DOWNMIX, "Up Down", updown_proc_info }, |
1656 | { UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic", prologic_proc_info }, |
1657 | { UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", threed_enh_proc_info }, |
1658 | { UAC_PROCESS_REVERB, "Reverb", reverb_proc_info }, |
1659 | { UAC_PROCESS_CHORUS, "Chorus", chorus_proc_info }, |
1660 | { UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info }, |
1661 | { 0 }, |
1662 | }; |
1663 | /* |
1664 | * predefined data for extension units |
1665 | */ |
1666 | static struct procunit_value_info clock_rate_xu_info[] = { |
1667 | { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 }, |
1668 | { 0 } |
1669 | }; |
1670 | static struct procunit_value_info clock_source_xu_info[] = { |
1671 | { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN }, |
1672 | { 0 } |
1673 | }; |
1674 | static struct procunit_value_info spdif_format_xu_info[] = { |
1675 | { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN }, |
1676 | { 0 } |
1677 | }; |
1678 | static struct procunit_value_info soft_limit_xu_info[] = { |
1679 | { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN }, |
1680 | { 0 } |
1681 | }; |
1682 | static struct procunit_info extunits[] = { |
1683 | { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info }, |
1684 | { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info }, |
1685 | { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info }, |
1686 | { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info }, |
1687 | { 0 } |
1688 | }; |
1689 | /* |
1690 | * build a processing/extension unit |
1691 | */ |
1692 | static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw_desc, struct procunit_info *list, char *name) |
1693 | { |
1694 | struct uac_processing_unit_descriptor *desc = raw_desc; |
1695 | int num_ins = desc->bNrInPins; |
1696 | struct usb_mixer_elem_info *cval; |
1697 | struct snd_kcontrol *kctl; |
1698 | int i, err, nameid, type, len; |
1699 | struct procunit_info *info; |
1700 | struct procunit_value_info *valinfo; |
1701 | const struct usbmix_name_map *map; |
1702 | static struct procunit_value_info default_value_info[] = { |
1703 | { 0x01, "Switch", USB_MIXER_BOOLEAN }, |
1704 | { 0 } |
1705 | }; |
1706 | static struct procunit_info default_info = { |
1707 | 0, NULL, default_value_info |
1708 | }; |
1709 | |
1710 | if (desc->bLength < 13 || desc->bLength < 13 + num_ins || |
1711 | desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) { |
1712 | snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid); |
1713 | return -EINVAL; |
1714 | } |
1715 | |
1716 | for (i = 0; i < num_ins; i++) { |
1717 | if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) |
1718 | return err; |
1719 | } |
1720 | |
1721 | type = le16_to_cpu(desc->wProcessType); |
1722 | for (info = list; info && info->type; info++) |
1723 | if (info->type == type) |
1724 | break; |
1725 | if (! info || ! info->type) |
1726 | info = &default_info; |
1727 | |
1728 | for (valinfo = info->values; valinfo->control; valinfo++) { |
1729 | __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol); |
1730 | |
1731 | if (! (controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1)))) |
1732 | continue; |
1733 | map = find_map(state, unitid, valinfo->control); |
1734 | if (check_ignored_ctl(map)) |
1735 | continue; |
1736 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
1737 | if (! cval) { |
1738 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
1739 | return -ENOMEM; |
1740 | } |
1741 | cval->mixer = state->mixer; |
1742 | cval->id = unitid; |
1743 | cval->control = valinfo->control; |
1744 | cval->val_type = valinfo->val_type; |
1745 | cval->channels = 1; |
1746 | |
1747 | /* get min/max values */ |
1748 | if (type == UAC_PROCESS_UP_DOWNMIX && cval->control == UAC_UD_MODE_SELECT) { |
1749 | __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol); |
1750 | /* FIXME: hard-coded */ |
1751 | cval->min = 1; |
1752 | cval->max = control_spec[0]; |
1753 | cval->res = 1; |
1754 | cval->initialized = 1; |
1755 | } else { |
1756 | if (type == USB_XU_CLOCK_RATE) { |
1757 | /* E-Mu USB 0404/0202/TrackerPre/0204 |
1758 | * samplerate control quirk |
1759 | */ |
1760 | cval->min = 0; |
1761 | cval->max = 5; |
1762 | cval->res = 1; |
1763 | cval->initialized = 1; |
1764 | } else |
1765 | get_min_max(cval, valinfo->min_value); |
1766 | } |
1767 | |
1768 | kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); |
1769 | if (! kctl) { |
1770 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
1771 | kfree(cval); |
1772 | return -ENOMEM; |
1773 | } |
1774 | kctl->private_free = usb_mixer_elem_free; |
1775 | |
1776 | if (check_mapped_name(map, kctl->id.name, |
1777 | sizeof(kctl->id.name))) |
1778 | /* nothing */ ; |
1779 | else if (info->name) |
1780 | strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); |
1781 | else { |
1782 | nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol); |
1783 | len = 0; |
1784 | if (nameid) |
1785 | len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); |
1786 | if (! len) |
1787 | strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); |
1788 | } |
1789 | append_ctl_name(kctl, " "); |
1790 | append_ctl_name(kctl, valinfo->suffix); |
1791 | |
1792 | snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n", |
1793 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max); |
1794 | if ((err = snd_usb_mixer_add_control(state->mixer, kctl)) < 0) |
1795 | return err; |
1796 | } |
1797 | return 0; |
1798 | } |
1799 | |
1800 | |
1801 | static int parse_audio_processing_unit(struct mixer_build *state, int unitid, void *raw_desc) |
1802 | { |
1803 | return build_audio_procunit(state, unitid, raw_desc, procunits, "Processing Unit"); |
1804 | } |
1805 | |
1806 | static int parse_audio_extension_unit(struct mixer_build *state, int unitid, void *raw_desc) |
1807 | { |
1808 | /* Note that we parse extension units with processing unit descriptors. |
1809 | * That's ok as the layout is the same */ |
1810 | return build_audio_procunit(state, unitid, raw_desc, extunits, "Extension Unit"); |
1811 | } |
1812 | |
1813 | |
1814 | /* |
1815 | * Selector Unit |
1816 | */ |
1817 | |
1818 | /* info callback for selector unit |
1819 | * use an enumerator type for routing |
1820 | */ |
1821 | static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) |
1822 | { |
1823 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1824 | const char **itemlist = (const char **)kcontrol->private_value; |
1825 | |
1826 | if (snd_BUG_ON(!itemlist)) |
1827 | return -EINVAL; |
1828 | return snd_ctl_enum_info(uinfo, 1, cval->max, itemlist); |
1829 | } |
1830 | |
1831 | /* get callback for selector unit */ |
1832 | static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1833 | { |
1834 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1835 | int val, err; |
1836 | |
1837 | err = get_cur_ctl_value(cval, cval->control << 8, &val); |
1838 | if (err < 0) { |
1839 | if (cval->mixer->ignore_ctl_error) { |
1840 | ucontrol->value.enumerated.item[0] = 0; |
1841 | return 0; |
1842 | } |
1843 | return err; |
1844 | } |
1845 | val = get_relative_value(cval, val); |
1846 | ucontrol->value.enumerated.item[0] = val; |
1847 | return 0; |
1848 | } |
1849 | |
1850 | /* put callback for selector unit */ |
1851 | static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1852 | { |
1853 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1854 | int val, oval, err; |
1855 | |
1856 | err = get_cur_ctl_value(cval, cval->control << 8, &oval); |
1857 | if (err < 0) { |
1858 | if (cval->mixer->ignore_ctl_error) |
1859 | return 0; |
1860 | return err; |
1861 | } |
1862 | val = ucontrol->value.enumerated.item[0]; |
1863 | val = get_abs_value(cval, val); |
1864 | if (val != oval) { |
1865 | set_cur_ctl_value(cval, cval->control << 8, val); |
1866 | return 1; |
1867 | } |
1868 | return 0; |
1869 | } |
1870 | |
1871 | /* alsa control interface for selector unit */ |
1872 | static struct snd_kcontrol_new mixer_selectunit_ctl = { |
1873 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1874 | .name = "", /* will be filled later */ |
1875 | .info = mixer_ctl_selector_info, |
1876 | .get = mixer_ctl_selector_get, |
1877 | .put = mixer_ctl_selector_put, |
1878 | }; |
1879 | |
1880 | |
1881 | /* private free callback. |
1882 | * free both private_data and private_value |
1883 | */ |
1884 | static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) |
1885 | { |
1886 | int i, num_ins = 0; |
1887 | |
1888 | if (kctl->private_data) { |
1889 | struct usb_mixer_elem_info *cval = kctl->private_data; |
1890 | num_ins = cval->max; |
1891 | kfree(cval); |
1892 | kctl->private_data = NULL; |
1893 | } |
1894 | if (kctl->private_value) { |
1895 | char **itemlist = (char **)kctl->private_value; |
1896 | for (i = 0; i < num_ins; i++) |
1897 | kfree(itemlist[i]); |
1898 | kfree(itemlist); |
1899 | kctl->private_value = 0; |
1900 | } |
1901 | } |
1902 | |
1903 | /* |
1904 | * parse a selector unit |
1905 | */ |
1906 | static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void *raw_desc) |
1907 | { |
1908 | struct uac_selector_unit_descriptor *desc = raw_desc; |
1909 | unsigned int i, nameid, len; |
1910 | int err; |
1911 | struct usb_mixer_elem_info *cval; |
1912 | struct snd_kcontrol *kctl; |
1913 | const struct usbmix_name_map *map; |
1914 | char **namelist; |
1915 | |
1916 | if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) { |
1917 | snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid); |
1918 | return -EINVAL; |
1919 | } |
1920 | |
1921 | for (i = 0; i < desc->bNrInPins; i++) { |
1922 | if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) |
1923 | return err; |
1924 | } |
1925 | |
1926 | if (desc->bNrInPins == 1) /* only one ? nonsense! */ |
1927 | return 0; |
1928 | |
1929 | map = find_map(state, unitid, 0); |
1930 | if (check_ignored_ctl(map)) |
1931 | return 0; |
1932 | |
1933 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
1934 | if (! cval) { |
1935 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
1936 | return -ENOMEM; |
1937 | } |
1938 | cval->mixer = state->mixer; |
1939 | cval->id = unitid; |
1940 | cval->val_type = USB_MIXER_U8; |
1941 | cval->channels = 1; |
1942 | cval->min = 1; |
1943 | cval->max = desc->bNrInPins; |
1944 | cval->res = 1; |
1945 | cval->initialized = 1; |
1946 | |
1947 | if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) |
1948 | cval->control = UAC2_CX_CLOCK_SELECTOR; |
1949 | else |
1950 | cval->control = 0; |
1951 | |
1952 | namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL); |
1953 | if (! namelist) { |
1954 | snd_printk(KERN_ERR "cannot malloc\n"); |
1955 | kfree(cval); |
1956 | return -ENOMEM; |
1957 | } |
1958 | #define MAX_ITEM_NAME_LEN 64 |
1959 | for (i = 0; i < desc->bNrInPins; i++) { |
1960 | struct usb_audio_term iterm; |
1961 | len = 0; |
1962 | namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); |
1963 | if (! namelist[i]) { |
1964 | snd_printk(KERN_ERR "cannot malloc\n"); |
1965 | while (i--) |
1966 | kfree(namelist[i]); |
1967 | kfree(namelist); |
1968 | kfree(cval); |
1969 | return -ENOMEM; |
1970 | } |
1971 | len = check_mapped_selector_name(state, unitid, i, namelist[i], |
1972 | MAX_ITEM_NAME_LEN); |
1973 | if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0) |
1974 | len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); |
1975 | if (! len) |
1976 | sprintf(namelist[i], "Input %d", i); |
1977 | } |
1978 | |
1979 | kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); |
1980 | if (! kctl) { |
1981 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); |
1982 | kfree(namelist); |
1983 | kfree(cval); |
1984 | return -ENOMEM; |
1985 | } |
1986 | kctl->private_value = (unsigned long)namelist; |
1987 | kctl->private_free = usb_mixer_selector_elem_free; |
1988 | |
1989 | nameid = uac_selector_unit_iSelector(desc); |
1990 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
1991 | if (len) |
1992 | ; |
1993 | else if (nameid) |
1994 | snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); |
1995 | else { |
1996 | len = get_term_name(state, &state->oterm, |
1997 | kctl->id.name, sizeof(kctl->id.name), 0); |
1998 | if (! len) |
1999 | strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); |
2000 | |
2001 | if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) |
2002 | append_ctl_name(kctl, " Clock Source"); |
2003 | else if ((state->oterm.type & 0xff00) == 0x0100) |
2004 | append_ctl_name(kctl, " Capture Source"); |
2005 | else |
2006 | append_ctl_name(kctl, " Playback Source"); |
2007 | } |
2008 | |
2009 | snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n", |
2010 | cval->id, kctl->id.name, desc->bNrInPins); |
2011 | if ((err = snd_usb_mixer_add_control(state->mixer, kctl)) < 0) |
2012 | return err; |
2013 | |
2014 | return 0; |
2015 | } |
2016 | |
2017 | |
2018 | /* |
2019 | * parse an audio unit recursively |
2020 | */ |
2021 | |
2022 | static int parse_audio_unit(struct mixer_build *state, int unitid) |
2023 | { |
2024 | unsigned char *p1; |
2025 | |
2026 | if (test_and_set_bit(unitid, state->unitbitmap)) |
2027 | return 0; /* the unit already visited */ |
2028 | |
2029 | p1 = find_audio_control_unit(state, unitid); |
2030 | if (!p1) { |
2031 | snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid); |
2032 | return -EINVAL; |
2033 | } |
2034 | |
2035 | switch (p1[2]) { |
2036 | case UAC_INPUT_TERMINAL: |
2037 | case UAC2_CLOCK_SOURCE: |
2038 | return 0; /* NOP */ |
2039 | case UAC_MIXER_UNIT: |
2040 | return parse_audio_mixer_unit(state, unitid, p1); |
2041 | case UAC_SELECTOR_UNIT: |
2042 | case UAC2_CLOCK_SELECTOR: |
2043 | return parse_audio_selector_unit(state, unitid, p1); |
2044 | case UAC_FEATURE_UNIT: |
2045 | return parse_audio_feature_unit(state, unitid, p1); |
2046 | case UAC1_PROCESSING_UNIT: |
2047 | /* UAC2_EFFECT_UNIT has the same value */ |
2048 | if (state->mixer->protocol == UAC_VERSION_1) |
2049 | return parse_audio_processing_unit(state, unitid, p1); |
2050 | else |
2051 | return 0; /* FIXME - effect units not implemented yet */ |
2052 | case UAC1_EXTENSION_UNIT: |
2053 | /* UAC2_PROCESSING_UNIT_V2 has the same value */ |
2054 | if (state->mixer->protocol == UAC_VERSION_1) |
2055 | return parse_audio_extension_unit(state, unitid, p1); |
2056 | else /* UAC_VERSION_2 */ |
2057 | return parse_audio_processing_unit(state, unitid, p1); |
2058 | case UAC2_EXTENSION_UNIT_V2: |
2059 | return parse_audio_extension_unit(state, unitid, p1); |
2060 | default: |
2061 | snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); |
2062 | return -EINVAL; |
2063 | } |
2064 | } |
2065 | |
2066 | static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) |
2067 | { |
2068 | kfree(mixer->id_elems); |
2069 | if (mixer->urb) { |
2070 | kfree(mixer->urb->transfer_buffer); |
2071 | usb_free_urb(mixer->urb); |
2072 | } |
2073 | usb_free_urb(mixer->rc_urb); |
2074 | kfree(mixer->rc_setup_packet); |
2075 | kfree(mixer); |
2076 | } |
2077 | |
2078 | static int snd_usb_mixer_dev_free(struct snd_device *device) |
2079 | { |
2080 | struct usb_mixer_interface *mixer = device->device_data; |
2081 | snd_usb_mixer_free(mixer); |
2082 | return 0; |
2083 | } |
2084 | |
2085 | /* |
2086 | * create mixer controls |
2087 | * |
2088 | * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers |
2089 | */ |
2090 | static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) |
2091 | { |
2092 | struct mixer_build state; |
2093 | int err; |
2094 | const struct usbmix_ctl_map *map; |
2095 | void *p; |
2096 | |
2097 | memset(&state, 0, sizeof(state)); |
2098 | state.chip = mixer->chip; |
2099 | state.mixer = mixer; |
2100 | state.buffer = mixer->hostif->extra; |
2101 | state.buflen = mixer->hostif->extralen; |
2102 | |
2103 | /* check the mapping table */ |
2104 | for (map = usbmix_ctl_maps; map->id; map++) { |
2105 | if (map->id == state.chip->usb_id) { |
2106 | state.map = map->map; |
2107 | state.selector_map = map->selector_map; |
2108 | mixer->ignore_ctl_error = map->ignore_ctl_error; |
2109 | break; |
2110 | } |
2111 | } |
2112 | |
2113 | p = NULL; |
2114 | while ((p = snd_usb_find_csint_desc(mixer->hostif->extra, mixer->hostif->extralen, |
2115 | p, UAC_OUTPUT_TERMINAL)) != NULL) { |
2116 | if (mixer->protocol == UAC_VERSION_1) { |
2117 | struct uac1_output_terminal_descriptor *desc = p; |
2118 | |
2119 | if (desc->bLength < sizeof(*desc)) |
2120 | continue; /* invalid descriptor? */ |
2121 | set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */ |
2122 | state.oterm.id = desc->bTerminalID; |
2123 | state.oterm.type = le16_to_cpu(desc->wTerminalType); |
2124 | state.oterm.name = desc->iTerminal; |
2125 | err = parse_audio_unit(&state, desc->bSourceID); |
2126 | if (err < 0 && err != -EINVAL) |
2127 | return err; |
2128 | } else { /* UAC_VERSION_2 */ |
2129 | struct uac2_output_terminal_descriptor *desc = p; |
2130 | |
2131 | if (desc->bLength < sizeof(*desc)) |
2132 | continue; /* invalid descriptor? */ |
2133 | set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */ |
2134 | state.oterm.id = desc->bTerminalID; |
2135 | state.oterm.type = le16_to_cpu(desc->wTerminalType); |
2136 | state.oterm.name = desc->iTerminal; |
2137 | err = parse_audio_unit(&state, desc->bSourceID); |
2138 | if (err < 0 && err != -EINVAL) |
2139 | return err; |
2140 | |
2141 | /* for UAC2, use the same approach to also add the clock selectors */ |
2142 | err = parse_audio_unit(&state, desc->bCSourceID); |
2143 | if (err < 0 && err != -EINVAL) |
2144 | return err; |
2145 | } |
2146 | } |
2147 | |
2148 | return 0; |
2149 | } |
2150 | |
2151 | void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) |
2152 | { |
2153 | struct usb_mixer_elem_info *info; |
2154 | |
2155 | for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) |
2156 | snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
2157 | info->elem_id); |
2158 | } |
2159 | |
2160 | static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer, |
2161 | int unitid, |
2162 | struct usb_mixer_elem_info *cval) |
2163 | { |
2164 | static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN", |
2165 | "S8", "U8", "S16", "U16"}; |
2166 | snd_iprintf(buffer, " Unit: %i\n", unitid); |
2167 | if (cval->elem_id) |
2168 | snd_iprintf(buffer, " Control: name=\"%s\", index=%i\n", |
2169 | cval->elem_id->name, cval->elem_id->index); |
2170 | snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, " |
2171 | "channels=%i, type=\"%s\"\n", cval->id, |
2172 | cval->control, cval->cmask, cval->channels, |
2173 | val_types[cval->val_type]); |
2174 | snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n", |
2175 | cval->min, cval->max, cval->dBmin, cval->dBmax); |
2176 | } |
2177 | |
2178 | static void snd_usb_mixer_proc_read(struct snd_info_entry *entry, |
2179 | struct snd_info_buffer *buffer) |
2180 | { |
2181 | struct snd_usb_audio *chip = entry->private_data; |
2182 | struct usb_mixer_interface *mixer; |
2183 | struct usb_mixer_elem_info *cval; |
2184 | int unitid; |
2185 | |
2186 | list_for_each_entry(mixer, &chip->mixer_list, list) { |
2187 | snd_iprintf(buffer, |
2188 | "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n", |
2189 | chip->usb_id, snd_usb_ctrl_intf(chip), |
2190 | mixer->ignore_ctl_error); |
2191 | snd_iprintf(buffer, "Card: %s\n", chip->card->longname); |
2192 | for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) { |
2193 | for (cval = mixer->id_elems[unitid]; cval; |
2194 | cval = cval->next_id_elem) |
2195 | snd_usb_mixer_dump_cval(buffer, unitid, cval); |
2196 | } |
2197 | } |
2198 | } |
2199 | |
2200 | static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer, |
2201 | int attribute, int value, int index) |
2202 | { |
2203 | struct usb_mixer_elem_info *info; |
2204 | __u8 unitid = (index >> 8) & 0xff; |
2205 | __u8 control = (value >> 8) & 0xff; |
2206 | __u8 channel = value & 0xff; |
2207 | |
2208 | if (channel >= MAX_CHANNELS) { |
2209 | snd_printk(KERN_DEBUG "%s(): bogus channel number %d\n", |
2210 | __func__, channel); |
2211 | return; |
2212 | } |
2213 | |
2214 | for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) { |
2215 | if (info->control != control) |
2216 | continue; |
2217 | |
2218 | switch (attribute) { |
2219 | case UAC2_CS_CUR: |
2220 | /* invalidate cache, so the value is read from the device */ |
2221 | if (channel) |
2222 | info->cached &= ~(1 << channel); |
2223 | else /* master channel */ |
2224 | info->cached = 0; |
2225 | |
2226 | snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, |
2227 | info->elem_id); |
2228 | break; |
2229 | |
2230 | case UAC2_CS_RANGE: |
2231 | /* TODO */ |
2232 | break; |
2233 | |
2234 | case UAC2_CS_MEM: |
2235 | /* TODO */ |
2236 | break; |
2237 | |
2238 | default: |
2239 | snd_printk(KERN_DEBUG "unknown attribute %d in interrupt\n", |
2240 | attribute); |
2241 | break; |
2242 | } /* switch */ |
2243 | } |
2244 | } |
2245 | |
2246 | static void snd_usb_mixer_interrupt(struct urb *urb) |
2247 | { |
2248 | struct usb_mixer_interface *mixer = urb->context; |
2249 | int len = urb->actual_length; |
2250 | int ustatus = urb->status; |
2251 | |
2252 | if (ustatus != 0) |
2253 | goto requeue; |
2254 | |
2255 | if (mixer->protocol == UAC_VERSION_1) { |
2256 | struct uac1_status_word *status; |
2257 | |
2258 | for (status = urb->transfer_buffer; |
2259 | len >= sizeof(*status); |
2260 | len -= sizeof(*status), status++) { |
2261 | snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n", |
2262 | status->bStatusType, |
2263 | status->bOriginator); |
2264 | |
2265 | /* ignore any notifications not from the control interface */ |
2266 | if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) != |
2267 | UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF) |
2268 | continue; |
2269 | |
2270 | if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED) |
2271 | snd_usb_mixer_rc_memory_change(mixer, status->bOriginator); |
2272 | else |
2273 | snd_usb_mixer_notify_id(mixer, status->bOriginator); |
2274 | } |
2275 | } else { /* UAC_VERSION_2 */ |
2276 | struct uac2_interrupt_data_msg *msg; |
2277 | |
2278 | for (msg = urb->transfer_buffer; |
2279 | len >= sizeof(*msg); |
2280 | len -= sizeof(*msg), msg++) { |
2281 | /* drop vendor specific and endpoint requests */ |
2282 | if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) || |
2283 | (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP)) |
2284 | continue; |
2285 | |
2286 | snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute, |
2287 | le16_to_cpu(msg->wValue), |
2288 | le16_to_cpu(msg->wIndex)); |
2289 | } |
2290 | } |
2291 | |
2292 | requeue: |
2293 | if (ustatus != -ENOENT && ustatus != -ECONNRESET && ustatus != -ESHUTDOWN) { |
2294 | urb->dev = mixer->chip->dev; |
2295 | usb_submit_urb(urb, GFP_ATOMIC); |
2296 | } |
2297 | } |
2298 | |
2299 | /* stop any bus activity of a mixer */ |
2300 | void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer) |
2301 | { |
2302 | usb_kill_urb(mixer->urb); |
2303 | usb_kill_urb(mixer->rc_urb); |
2304 | } |
2305 | |
2306 | int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) |
2307 | { |
2308 | int err; |
2309 | |
2310 | if (mixer->urb) { |
2311 | err = usb_submit_urb(mixer->urb, GFP_NOIO); |
2312 | if (err < 0) |
2313 | return err; |
2314 | } |
2315 | |
2316 | return 0; |
2317 | } |
2318 | |
2319 | /* create the handler for the optional status interrupt endpoint */ |
2320 | static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) |
2321 | { |
2322 | struct usb_endpoint_descriptor *ep; |
2323 | void *transfer_buffer; |
2324 | int buffer_length; |
2325 | unsigned int epnum; |
2326 | |
2327 | /* we need one interrupt input endpoint */ |
2328 | if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1) |
2329 | return 0; |
2330 | ep = get_endpoint(mixer->hostif, 0); |
2331 | if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep)) |
2332 | return 0; |
2333 | |
2334 | epnum = usb_endpoint_num(ep); |
2335 | buffer_length = le16_to_cpu(ep->wMaxPacketSize); |
2336 | transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); |
2337 | if (!transfer_buffer) |
2338 | return -ENOMEM; |
2339 | mixer->urb = usb_alloc_urb(0, GFP_KERNEL); |
2340 | if (!mixer->urb) { |
2341 | kfree(transfer_buffer); |
2342 | return -ENOMEM; |
2343 | } |
2344 | usb_fill_int_urb(mixer->urb, mixer->chip->dev, |
2345 | usb_rcvintpipe(mixer->chip->dev, epnum), |
2346 | transfer_buffer, buffer_length, |
2347 | snd_usb_mixer_interrupt, mixer, ep->bInterval); |
2348 | usb_submit_urb(mixer->urb, GFP_KERNEL); |
2349 | return 0; |
2350 | } |
2351 | |
2352 | int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, |
2353 | int ignore_error) |
2354 | { |
2355 | static struct snd_device_ops dev_ops = { |
2356 | .dev_free = snd_usb_mixer_dev_free |
2357 | }; |
2358 | struct usb_mixer_interface *mixer; |
2359 | struct snd_info_entry *entry; |
2360 | int err; |
2361 | |
2362 | strcpy(chip->card->mixername, "USB Mixer"); |
2363 | |
2364 | mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); |
2365 | if (!mixer) |
2366 | return -ENOMEM; |
2367 | mixer->chip = chip; |
2368 | mixer->ignore_ctl_error = ignore_error; |
2369 | mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems), |
2370 | GFP_KERNEL); |
2371 | if (!mixer->id_elems) { |
2372 | kfree(mixer); |
2373 | return -ENOMEM; |
2374 | } |
2375 | |
2376 | mixer->hostif = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0]; |
2377 | switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) { |
2378 | case UAC_VERSION_1: |
2379 | default: |
2380 | mixer->protocol = UAC_VERSION_1; |
2381 | break; |
2382 | case UAC_VERSION_2: |
2383 | mixer->protocol = UAC_VERSION_2; |
2384 | break; |
2385 | } |
2386 | |
2387 | if ((err = snd_usb_mixer_controls(mixer)) < 0 || |
2388 | (err = snd_usb_mixer_status_create(mixer)) < 0) |
2389 | goto _error; |
2390 | |
2391 | snd_usb_mixer_apply_create_quirk(mixer); |
2392 | |
2393 | err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops); |
2394 | if (err < 0) |
2395 | goto _error; |
2396 | |
2397 | if (list_empty(&chip->mixer_list) && |
2398 | !snd_card_proc_new(chip->card, "usbmixer", &entry)) |
2399 | snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read); |
2400 | |
2401 | list_add(&mixer->list, &chip->mixer_list); |
2402 | return 0; |
2403 | |
2404 | _error: |
2405 | snd_usb_mixer_free(mixer); |
2406 | return err; |
2407 | } |
2408 | |
2409 | void snd_usb_mixer_disconnect(struct list_head *p) |
2410 | { |
2411 | struct usb_mixer_interface *mixer; |
2412 | |
2413 | mixer = list_entry(p, struct usb_mixer_interface, list); |
2414 | usb_kill_urb(mixer->urb); |
2415 | usb_kill_urb(mixer->rc_urb); |
2416 | } |
2417 |
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Tags:
od-2011-09-04
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v2.6.34-rc5
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