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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/log2.h> | |
49 | #include <linux/slab.h> | |
50 | #include <linux/string.h> | |
51 | #include <linux/usb.h> | |
52 | #include <linux/usb/audio.h> | |
53 | #include <linux/usb/audio-v2.h> | |
54 | ||
55 | #include <sound/core.h> | |
56 | #include <sound/control.h> | |
57 | #include <sound/hwdep.h> | |
58 | #include <sound/info.h> | |
59 | #include <sound/tlv.h> | |
60 | ||
61 | #include "usbaudio.h" | |
62 | #include "mixer.h" | |
63 | #include "helper.h" | |
64 | #include "mixer_quirks.h" | |
65 | #include "power.h" | |
66 | ||
67 | #define MAX_ID_ELEMS 256 | |
68 | ||
69 | struct usb_audio_term { | |
70 | int id; | |
71 | int type; | |
72 | int channels; | |
73 | unsigned int chconfig; | |
74 | int name; | |
75 | }; | |
76 | ||
77 | struct usbmix_name_map; | |
78 | ||
79 | struct mixer_build { | |
80 | struct snd_usb_audio *chip; | |
81 | struct usb_mixer_interface *mixer; | |
82 | unsigned char *buffer; | |
83 | unsigned int buflen; | |
84 | DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS); | |
85 | struct usb_audio_term oterm; | |
86 | const struct usbmix_name_map *map; | |
87 | const struct usbmix_selector_map *selector_map; | |
88 | }; | |
89 | ||
90 | /*E-mu 0202/0404/0204 eXtension Unit(XU) control*/ | |
91 | enum { | |
92 | USB_XU_CLOCK_RATE = 0xe301, | |
93 | USB_XU_CLOCK_SOURCE = 0xe302, | |
94 | USB_XU_DIGITAL_IO_STATUS = 0xe303, | |
95 | USB_XU_DEVICE_OPTIONS = 0xe304, | |
96 | USB_XU_DIRECT_MONITORING = 0xe305, | |
97 | USB_XU_METERING = 0xe306 | |
98 | }; | |
99 | enum { | |
100 | USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/ | |
101 | USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */ | |
102 | USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */ | |
103 | USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */ | |
104 | }; | |
105 | ||
106 | /* | |
107 | * manual mapping of mixer names | |
108 | * if the mixer topology is too complicated and the parsed names are | |
109 | * ambiguous, add the entries in usbmixer_maps.c. | |
110 | */ | |
111 | #include "mixer_maps.c" | |
112 | ||
113 | static const struct usbmix_name_map * | |
114 | find_map(struct mixer_build *state, int unitid, int control) | |
115 | { | |
116 | const struct usbmix_name_map *p = state->map; | |
117 | ||
118 | if (!p) | |
119 | return NULL; | |
120 | ||
121 | for (p = state->map; p->id; p++) { | |
122 | if (p->id == unitid && | |
123 | (!control || !p->control || control == p->control)) | |
124 | return p; | |
125 | } | |
126 | return NULL; | |
127 | } | |
128 | ||
129 | /* get the mapped name if the unit matches */ | |
130 | static int | |
131 | check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen) | |
132 | { | |
133 | if (!p || !p->name) | |
134 | return 0; | |
135 | ||
136 | buflen--; | |
137 | return strlcpy(buf, p->name, buflen); | |
138 | } | |
139 | ||
140 | /* ignore the error value if ignore_ctl_error flag is set */ | |
141 | #define filter_error(cval, err) \ | |
142 | ((cval)->head.mixer->ignore_ctl_error ? 0 : (err)) | |
143 | ||
144 | /* check whether the control should be ignored */ | |
145 | static inline int | |
146 | check_ignored_ctl(const struct usbmix_name_map *p) | |
147 | { | |
148 | if (!p || p->name || p->dB) | |
149 | return 0; | |
150 | return 1; | |
151 | } | |
152 | ||
153 | /* dB mapping */ | |
154 | static inline void check_mapped_dB(const struct usbmix_name_map *p, | |
155 | struct usb_mixer_elem_info *cval) | |
156 | { | |
157 | if (p && p->dB) { | |
158 | cval->dBmin = p->dB->min; | |
159 | cval->dBmax = p->dB->max; | |
160 | cval->initialized = 1; | |
161 | } | |
162 | } | |
163 | ||
164 | /* get the mapped selector source name */ | |
165 | static int check_mapped_selector_name(struct mixer_build *state, int unitid, | |
166 | int index, char *buf, int buflen) | |
167 | { | |
168 | const struct usbmix_selector_map *p; | |
169 | ||
170 | if (!state->selector_map) | |
171 | return 0; | |
172 | for (p = state->selector_map; p->id; p++) { | |
173 | if (p->id == unitid && index < p->count) | |
174 | return strlcpy(buf, p->names[index], buflen); | |
175 | } | |
176 | return 0; | |
177 | } | |
178 | ||
179 | /* | |
180 | * find an audio control unit with the given unit id | |
181 | */ | |
182 | static void *find_audio_control_unit(struct mixer_build *state, | |
183 | unsigned char unit) | |
184 | { | |
185 | /* we just parse the header */ | |
186 | struct uac_feature_unit_descriptor *hdr = NULL; | |
187 | ||
188 | while ((hdr = snd_usb_find_desc(state->buffer, state->buflen, hdr, | |
189 | USB_DT_CS_INTERFACE)) != NULL) { | |
190 | if (hdr->bLength >= 4 && | |
191 | hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL && | |
192 | hdr->bDescriptorSubtype <= UAC2_SAMPLE_RATE_CONVERTER && | |
193 | hdr->bUnitID == unit) | |
194 | return hdr; | |
195 | } | |
196 | ||
197 | return NULL; | |
198 | } | |
199 | ||
200 | /* | |
201 | * copy a string with the given id | |
202 | */ | |
203 | static int snd_usb_copy_string_desc(struct mixer_build *state, | |
204 | int index, char *buf, int maxlen) | |
205 | { | |
206 | int len = usb_string(state->chip->dev, index, buf, maxlen - 1); | |
207 | buf[len] = 0; | |
208 | return len; | |
209 | } | |
210 | ||
211 | /* | |
212 | * convert from the byte/word on usb descriptor to the zero-based integer | |
213 | */ | |
214 | static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) | |
215 | { | |
216 | switch (cval->val_type) { | |
217 | case USB_MIXER_BOOLEAN: | |
218 | return !!val; | |
219 | case USB_MIXER_INV_BOOLEAN: | |
220 | return !val; | |
221 | case USB_MIXER_U8: | |
222 | val &= 0xff; | |
223 | break; | |
224 | case USB_MIXER_S8: | |
225 | val &= 0xff; | |
226 | if (val >= 0x80) | |
227 | val -= 0x100; | |
228 | break; | |
229 | case USB_MIXER_U16: | |
230 | val &= 0xffff; | |
231 | break; | |
232 | case USB_MIXER_S16: | |
233 | val &= 0xffff; | |
234 | if (val >= 0x8000) | |
235 | val -= 0x10000; | |
236 | break; | |
237 | } | |
238 | return val; | |
239 | } | |
240 | ||
241 | /* | |
242 | * convert from the zero-based int to the byte/word for usb descriptor | |
243 | */ | |
244 | static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) | |
245 | { | |
246 | switch (cval->val_type) { | |
247 | case USB_MIXER_BOOLEAN: | |
248 | return !!val; | |
249 | case USB_MIXER_INV_BOOLEAN: | |
250 | return !val; | |
251 | case USB_MIXER_S8: | |
252 | case USB_MIXER_U8: | |
253 | return val & 0xff; | |
254 | case USB_MIXER_S16: | |
255 | case USB_MIXER_U16: | |
256 | return val & 0xffff; | |
257 | } | |
258 | return 0; /* not reached */ | |
259 | } | |
260 | ||
261 | static int get_relative_value(struct usb_mixer_elem_info *cval, int val) | |
262 | { | |
263 | if (!cval->res) | |
264 | cval->res = 1; | |
265 | if (val < cval->min) | |
266 | return 0; | |
267 | else if (val >= cval->max) | |
268 | return (cval->max - cval->min + cval->res - 1) / cval->res; | |
269 | else | |
270 | return (val - cval->min) / cval->res; | |
271 | } | |
272 | ||
273 | static int get_abs_value(struct usb_mixer_elem_info *cval, int val) | |
274 | { | |
275 | if (val < 0) | |
276 | return cval->min; | |
277 | if (!cval->res) | |
278 | cval->res = 1; | |
279 | val *= cval->res; | |
280 | val += cval->min; | |
281 | if (val > cval->max) | |
282 | return cval->max; | |
283 | return val; | |
284 | } | |
285 | ||
286 | static int uac2_ctl_value_size(int val_type) | |
287 | { | |
288 | switch (val_type) { | |
289 | case USB_MIXER_S32: | |
290 | case USB_MIXER_U32: | |
291 | return 4; | |
292 | case USB_MIXER_S16: | |
293 | case USB_MIXER_U16: | |
294 | return 2; | |
295 | default: | |
296 | return 1; | |
297 | } | |
298 | return 0; /* unreachable */ | |
299 | } | |
300 | ||
301 | ||
302 | /* | |
303 | * retrieve a mixer value | |
304 | */ | |
305 | ||
306 | static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, | |
307 | int validx, int *value_ret) | |
308 | { | |
309 | struct snd_usb_audio *chip = cval->head.mixer->chip; | |
310 | unsigned char buf[2]; | |
311 | int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; | |
312 | int timeout = 10; | |
313 | int idx = 0, err; | |
314 | ||
315 | err = snd_usb_lock_shutdown(chip); | |
316 | if (err < 0) | |
317 | return -EIO; | |
318 | ||
319 | while (timeout-- > 0) { | |
320 | idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8); | |
321 | if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request, | |
322 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, | |
323 | validx, idx, buf, val_len) >= val_len) { | |
324 | *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); | |
325 | err = 0; | |
326 | goto out; | |
327 | } | |
328 | } | |
329 | usb_audio_dbg(chip, | |
330 | "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", | |
331 | request, validx, idx, cval->val_type); | |
332 | err = -EINVAL; | |
333 | ||
334 | out: | |
335 | snd_usb_unlock_shutdown(chip); | |
336 | return err; | |
337 | } | |
338 | ||
339 | static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, | |
340 | int validx, int *value_ret) | |
341 | { | |
342 | struct snd_usb_audio *chip = cval->head.mixer->chip; | |
343 | unsigned char buf[4 + 3 * sizeof(__u32)]; /* enough space for one range */ | |
344 | unsigned char *val; | |
345 | int idx = 0, ret, size; | |
346 | __u8 bRequest; | |
347 | ||
348 | if (request == UAC_GET_CUR) { | |
349 | bRequest = UAC2_CS_CUR; | |
350 | size = uac2_ctl_value_size(cval->val_type); | |
351 | } else { | |
352 | bRequest = UAC2_CS_RANGE; | |
353 | size = sizeof(buf); | |
354 | } | |
355 | ||
356 | memset(buf, 0, sizeof(buf)); | |
357 | ||
358 | ret = snd_usb_lock_shutdown(chip) ? -EIO : 0; | |
359 | if (ret) | |
360 | goto error; | |
361 | ||
362 | idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8); | |
363 | ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest, | |
364 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, | |
365 | validx, idx, buf, size); | |
366 | snd_usb_unlock_shutdown(chip); | |
367 | ||
368 | if (ret < 0) { | |
369 | error: | |
370 | usb_audio_err(chip, | |
371 | "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", | |
372 | request, validx, idx, cval->val_type); | |
373 | return ret; | |
374 | } | |
375 | ||
376 | /* FIXME: how should we handle multiple triplets here? */ | |
377 | ||
378 | switch (request) { | |
379 | case UAC_GET_CUR: | |
380 | val = buf; | |
381 | break; | |
382 | case UAC_GET_MIN: | |
383 | val = buf + sizeof(__u16); | |
384 | break; | |
385 | case UAC_GET_MAX: | |
386 | val = buf + sizeof(__u16) * 2; | |
387 | break; | |
388 | case UAC_GET_RES: | |
389 | val = buf + sizeof(__u16) * 3; | |
390 | break; | |
391 | default: | |
392 | return -EINVAL; | |
393 | } | |
394 | ||
395 | *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16))); | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, | |
401 | int validx, int *value_ret) | |
402 | { | |
403 | validx += cval->idx_off; | |
404 | ||
405 | return (cval->head.mixer->protocol == UAC_VERSION_1) ? | |
406 | get_ctl_value_v1(cval, request, validx, value_ret) : | |
407 | get_ctl_value_v2(cval, request, validx, value_ret); | |
408 | } | |
409 | ||
410 | static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, | |
411 | int validx, int *value) | |
412 | { | |
413 | return get_ctl_value(cval, UAC_GET_CUR, validx, value); | |
414 | } | |
415 | ||
416 | /* channel = 0: master, 1 = first channel */ | |
417 | static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval, | |
418 | int channel, int *value) | |
419 | { | |
420 | return get_ctl_value(cval, UAC_GET_CUR, | |
421 | (cval->control << 8) | channel, | |
422 | value); | |
423 | } | |
424 | ||
425 | int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval, | |
426 | int channel, int index, int *value) | |
427 | { | |
428 | int err; | |
429 | ||
430 | if (cval->cached & (1 << channel)) { | |
431 | *value = cval->cache_val[index]; | |
432 | return 0; | |
433 | } | |
434 | err = get_cur_mix_raw(cval, channel, value); | |
435 | if (err < 0) { | |
436 | if (!cval->head.mixer->ignore_ctl_error) | |
437 | usb_audio_dbg(cval->head.mixer->chip, | |
438 | "cannot get current value for control %d ch %d: err = %d\n", | |
439 | cval->control, channel, err); | |
440 | return err; | |
441 | } | |
442 | cval->cached |= 1 << channel; | |
443 | cval->cache_val[index] = *value; | |
444 | return 0; | |
445 | } | |
446 | ||
447 | /* | |
448 | * set a mixer value | |
449 | */ | |
450 | ||
451 | int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, | |
452 | int request, int validx, int value_set) | |
453 | { | |
454 | struct snd_usb_audio *chip = cval->head.mixer->chip; | |
455 | unsigned char buf[4]; | |
456 | int idx = 0, val_len, err, timeout = 10; | |
457 | ||
458 | validx += cval->idx_off; | |
459 | ||
460 | if (cval->head.mixer->protocol == UAC_VERSION_1) { | |
461 | val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; | |
462 | } else { /* UAC_VERSION_2 */ | |
463 | val_len = uac2_ctl_value_size(cval->val_type); | |
464 | ||
465 | /* FIXME */ | |
466 | if (request != UAC_SET_CUR) { | |
467 | usb_audio_dbg(chip, "RANGE setting not yet supported\n"); | |
468 | return -EINVAL; | |
469 | } | |
470 | ||
471 | request = UAC2_CS_CUR; | |
472 | } | |
473 | ||
474 | value_set = convert_bytes_value(cval, value_set); | |
475 | buf[0] = value_set & 0xff; | |
476 | buf[1] = (value_set >> 8) & 0xff; | |
477 | buf[2] = (value_set >> 16) & 0xff; | |
478 | buf[3] = (value_set >> 24) & 0xff; | |
479 | ||
480 | err = snd_usb_lock_shutdown(chip); | |
481 | if (err < 0) | |
482 | return -EIO; | |
483 | ||
484 | while (timeout-- > 0) { | |
485 | idx = snd_usb_ctrl_intf(chip) | (cval->head.id << 8); | |
486 | if (snd_usb_ctl_msg(chip->dev, | |
487 | usb_sndctrlpipe(chip->dev, 0), request, | |
488 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, | |
489 | validx, idx, buf, val_len) >= 0) { | |
490 | err = 0; | |
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 | ||
503 | static 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 | ||
509 | int 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 | * TLV callback for mixer volume controls | |
536 | */ | |
537 | int 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 | scale[2] = cval->dBmin; | |
546 | scale[3] = cval->dBmax; | |
547 | if (copy_to_user(_tlv, scale, sizeof(scale))) | |
548 | return -EFAULT; | |
549 | return 0; | |
550 | } | |
551 | ||
552 | /* | |
553 | * parser routines begin here... | |
554 | */ | |
555 | ||
556 | static int parse_audio_unit(struct mixer_build *state, int unitid); | |
557 | ||
558 | ||
559 | /* | |
560 | * check if the input/output channel routing is enabled on the given bitmap. | |
561 | * used for mixer unit parser | |
562 | */ | |
563 | static int check_matrix_bitmap(unsigned char *bmap, | |
564 | int ich, int och, int num_outs) | |
565 | { | |
566 | int idx = ich * num_outs + och; | |
567 | return bmap[idx >> 3] & (0x80 >> (idx & 7)); | |
568 | } | |
569 | ||
570 | /* | |
571 | * add an alsa control element | |
572 | * search and increment the index until an empty slot is found. | |
573 | * | |
574 | * if failed, give up and free the control instance. | |
575 | */ | |
576 | ||
577 | int snd_usb_mixer_add_control(struct usb_mixer_elem_list *list, | |
578 | struct snd_kcontrol *kctl) | |
579 | { | |
580 | struct usb_mixer_interface *mixer = list->mixer; | |
581 | int err; | |
582 | ||
583 | while (snd_ctl_find_id(mixer->chip->card, &kctl->id)) | |
584 | kctl->id.index++; | |
585 | if ((err = snd_ctl_add(mixer->chip->card, kctl)) < 0) { | |
586 | usb_audio_dbg(mixer->chip, "cannot add control (err = %d)\n", | |
587 | err); | |
588 | return err; | |
589 | } | |
590 | list->kctl = kctl; | |
591 | list->next_id_elem = mixer->id_elems[list->id]; | |
592 | mixer->id_elems[list->id] = list; | |
593 | return 0; | |
594 | } | |
595 | ||
596 | /* | |
597 | * get a terminal name string | |
598 | */ | |
599 | ||
600 | static struct iterm_name_combo { | |
601 | int type; | |
602 | char *name; | |
603 | } iterm_names[] = { | |
604 | { 0x0300, "Output" }, | |
605 | { 0x0301, "Speaker" }, | |
606 | { 0x0302, "Headphone" }, | |
607 | { 0x0303, "HMD Audio" }, | |
608 | { 0x0304, "Desktop Speaker" }, | |
609 | { 0x0305, "Room Speaker" }, | |
610 | { 0x0306, "Com Speaker" }, | |
611 | { 0x0307, "LFE" }, | |
612 | { 0x0600, "External In" }, | |
613 | { 0x0601, "Analog In" }, | |
614 | { 0x0602, "Digital In" }, | |
615 | { 0x0603, "Line" }, | |
616 | { 0x0604, "Legacy In" }, | |
617 | { 0x0605, "IEC958 In" }, | |
618 | { 0x0606, "1394 DA Stream" }, | |
619 | { 0x0607, "1394 DV Stream" }, | |
620 | { 0x0700, "Embedded" }, | |
621 | { 0x0701, "Noise Source" }, | |
622 | { 0x0702, "Equalization Noise" }, | |
623 | { 0x0703, "CD" }, | |
624 | { 0x0704, "DAT" }, | |
625 | { 0x0705, "DCC" }, | |
626 | { 0x0706, "MiniDisk" }, | |
627 | { 0x0707, "Analog Tape" }, | |
628 | { 0x0708, "Phonograph" }, | |
629 | { 0x0709, "VCR Audio" }, | |
630 | { 0x070a, "Video Disk Audio" }, | |
631 | { 0x070b, "DVD Audio" }, | |
632 | { 0x070c, "TV Tuner Audio" }, | |
633 | { 0x070d, "Satellite Rec Audio" }, | |
634 | { 0x070e, "Cable Tuner Audio" }, | |
635 | { 0x070f, "DSS Audio" }, | |
636 | { 0x0710, "Radio Receiver" }, | |
637 | { 0x0711, "Radio Transmitter" }, | |
638 | { 0x0712, "Multi-Track Recorder" }, | |
639 | { 0x0713, "Synthesizer" }, | |
640 | { 0 }, | |
641 | }; | |
642 | ||
643 | static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm, | |
644 | unsigned char *name, int maxlen, int term_only) | |
645 | { | |
646 | struct iterm_name_combo *names; | |
647 | ||
648 | if (iterm->name) | |
649 | return snd_usb_copy_string_desc(state, iterm->name, | |
650 | name, maxlen); | |
651 | ||
652 | /* virtual type - not a real terminal */ | |
653 | if (iterm->type >> 16) { | |
654 | if (term_only) | |
655 | return 0; | |
656 | switch (iterm->type >> 16) { | |
657 | case UAC_SELECTOR_UNIT: | |
658 | strcpy(name, "Selector"); | |
659 | return 8; | |
660 | case UAC1_PROCESSING_UNIT: | |
661 | strcpy(name, "Process Unit"); | |
662 | return 12; | |
663 | case UAC1_EXTENSION_UNIT: | |
664 | strcpy(name, "Ext Unit"); | |
665 | return 8; | |
666 | case UAC_MIXER_UNIT: | |
667 | strcpy(name, "Mixer"); | |
668 | return 5; | |
669 | default: | |
670 | return sprintf(name, "Unit %d", iterm->id); | |
671 | } | |
672 | } | |
673 | ||
674 | switch (iterm->type & 0xff00) { | |
675 | case 0x0100: | |
676 | strcpy(name, "PCM"); | |
677 | return 3; | |
678 | case 0x0200: | |
679 | strcpy(name, "Mic"); | |
680 | return 3; | |
681 | case 0x0400: | |
682 | strcpy(name, "Headset"); | |
683 | return 7; | |
684 | case 0x0500: | |
685 | strcpy(name, "Phone"); | |
686 | return 5; | |
687 | } | |
688 | ||
689 | for (names = iterm_names; names->type; names++) { | |
690 | if (names->type == iterm->type) { | |
691 | strcpy(name, names->name); | |
692 | return strlen(names->name); | |
693 | } | |
694 | } | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
699 | /* | |
700 | * parse the source unit recursively until it reaches to a terminal | |
701 | * or a branched unit. | |
702 | */ | |
703 | static int check_input_term(struct mixer_build *state, int id, | |
704 | struct usb_audio_term *term) | |
705 | { | |
706 | int err; | |
707 | void *p1; | |
708 | ||
709 | memset(term, 0, sizeof(*term)); | |
710 | while ((p1 = find_audio_control_unit(state, id)) != NULL) { | |
711 | unsigned char *hdr = p1; | |
712 | term->id = id; | |
713 | switch (hdr[2]) { | |
714 | case UAC_INPUT_TERMINAL: | |
715 | if (state->mixer->protocol == UAC_VERSION_1) { | |
716 | struct uac_input_terminal_descriptor *d = p1; | |
717 | term->type = le16_to_cpu(d->wTerminalType); | |
718 | term->channels = d->bNrChannels; | |
719 | term->chconfig = le16_to_cpu(d->wChannelConfig); | |
720 | term->name = d->iTerminal; | |
721 | } else { /* UAC_VERSION_2 */ | |
722 | struct uac2_input_terminal_descriptor *d = p1; | |
723 | ||
724 | /* call recursively to verify that the | |
725 | * referenced clock entity is valid */ | |
726 | err = check_input_term(state, d->bCSourceID, term); | |
727 | if (err < 0) | |
728 | return err; | |
729 | ||
730 | /* save input term properties after recursion, | |
731 | * to ensure they are not overriden by the | |
732 | * recursion calls */ | |
733 | term->id = id; | |
734 | term->type = le16_to_cpu(d->wTerminalType); | |
735 | term->channels = d->bNrChannels; | |
736 | term->chconfig = le32_to_cpu(d->bmChannelConfig); | |
737 | term->name = d->iTerminal; | |
738 | } | |
739 | return 0; | |
740 | case UAC_FEATURE_UNIT: { | |
741 | /* the header is the same for v1 and v2 */ | |
742 | struct uac_feature_unit_descriptor *d = p1; | |
743 | id = d->bSourceID; | |
744 | break; /* continue to parse */ | |
745 | } | |
746 | case UAC_MIXER_UNIT: { | |
747 | struct uac_mixer_unit_descriptor *d = p1; | |
748 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ | |
749 | term->channels = uac_mixer_unit_bNrChannels(d); | |
750 | term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol); | |
751 | term->name = uac_mixer_unit_iMixer(d); | |
752 | return 0; | |
753 | } | |
754 | case UAC_SELECTOR_UNIT: | |
755 | case UAC2_CLOCK_SELECTOR: { | |
756 | struct uac_selector_unit_descriptor *d = p1; | |
757 | /* call recursively to retrieve the channel info */ | |
758 | err = check_input_term(state, d->baSourceID[0], term); | |
759 | if (err < 0) | |
760 | return err; | |
761 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ | |
762 | term->id = id; | |
763 | term->name = uac_selector_unit_iSelector(d); | |
764 | return 0; | |
765 | } | |
766 | case UAC1_PROCESSING_UNIT: | |
767 | case UAC1_EXTENSION_UNIT: | |
768 | /* UAC2_PROCESSING_UNIT_V2 */ | |
769 | /* UAC2_EFFECT_UNIT */ | |
770 | case UAC2_EXTENSION_UNIT_V2: { | |
771 | struct uac_processing_unit_descriptor *d = p1; | |
772 | ||
773 | if (state->mixer->protocol == UAC_VERSION_2 && | |
774 | hdr[2] == UAC2_EFFECT_UNIT) { | |
775 | /* UAC2/UAC1 unit IDs overlap here in an | |
776 | * uncompatible way. Ignore this unit for now. | |
777 | */ | |
778 | return 0; | |
779 | } | |
780 | ||
781 | if (d->bNrInPins) { | |
782 | id = d->baSourceID[0]; | |
783 | break; /* continue to parse */ | |
784 | } | |
785 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ | |
786 | term->channels = uac_processing_unit_bNrChannels(d); | |
787 | term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol); | |
788 | term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol); | |
789 | return 0; | |
790 | } | |
791 | case UAC2_CLOCK_SOURCE: { | |
792 | struct uac_clock_source_descriptor *d = p1; | |
793 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ | |
794 | term->id = id; | |
795 | term->name = d->iClockSource; | |
796 | return 0; | |
797 | } | |
798 | default: | |
799 | return -ENODEV; | |
800 | } | |
801 | } | |
802 | return -ENODEV; | |
803 | } | |
804 | ||
805 | /* | |
806 | * Feature Unit | |
807 | */ | |
808 | ||
809 | /* feature unit control information */ | |
810 | struct usb_feature_control_info { | |
811 | const char *name; | |
812 | int type; /* data type for uac1 */ | |
813 | int type_uac2; /* data type for uac2 if different from uac1, else -1 */ | |
814 | }; | |
815 | ||
816 | static struct usb_feature_control_info audio_feature_info[] = { | |
817 | { "Mute", USB_MIXER_INV_BOOLEAN, -1 }, | |
818 | { "Volume", USB_MIXER_S16, -1 }, | |
819 | { "Tone Control - Bass", USB_MIXER_S8, -1 }, | |
820 | { "Tone Control - Mid", USB_MIXER_S8, -1 }, | |
821 | { "Tone Control - Treble", USB_MIXER_S8, -1 }, | |
822 | { "Graphic Equalizer", USB_MIXER_S8, -1 }, /* FIXME: not implemeted yet */ | |
823 | { "Auto Gain Control", USB_MIXER_BOOLEAN, -1 }, | |
824 | { "Delay Control", USB_MIXER_U16, USB_MIXER_U32 }, | |
825 | { "Bass Boost", USB_MIXER_BOOLEAN, -1 }, | |
826 | { "Loudness", USB_MIXER_BOOLEAN, -1 }, | |
827 | /* UAC2 specific */ | |
828 | { "Input Gain Control", USB_MIXER_S16, -1 }, | |
829 | { "Input Gain Pad Control", USB_MIXER_S16, -1 }, | |
830 | { "Phase Inverter Control", USB_MIXER_BOOLEAN, -1 }, | |
831 | }; | |
832 | ||
833 | /* private_free callback */ | |
834 | void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl) | |
835 | { | |
836 | kfree(kctl->private_data); | |
837 | kctl->private_data = NULL; | |
838 | } | |
839 | ||
840 | /* | |
841 | * interface to ALSA control for feature/mixer units | |
842 | */ | |
843 | ||
844 | /* volume control quirks */ | |
845 | static void volume_control_quirks(struct usb_mixer_elem_info *cval, | |
846 | struct snd_kcontrol *kctl) | |
847 | { | |
848 | struct snd_usb_audio *chip = cval->head.mixer->chip; | |
849 | switch (chip->usb_id) { | |
850 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ | |
851 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ | |
852 | if (strcmp(kctl->id.name, "Effect Duration") == 0) { | |
853 | cval->min = 0x0000; | |
854 | cval->max = 0xffff; | |
855 | cval->res = 0x00e6; | |
856 | break; | |
857 | } | |
858 | if (strcmp(kctl->id.name, "Effect Volume") == 0 || | |
859 | strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { | |
860 | cval->min = 0x00; | |
861 | cval->max = 0xff; | |
862 | break; | |
863 | } | |
864 | if (strstr(kctl->id.name, "Effect Return") != NULL) { | |
865 | cval->min = 0xb706; | |
866 | cval->max = 0xff7b; | |
867 | cval->res = 0x0073; | |
868 | break; | |
869 | } | |
870 | if ((strstr(kctl->id.name, "Playback Volume") != NULL) || | |
871 | (strstr(kctl->id.name, "Effect Send") != NULL)) { | |
872 | cval->min = 0xb5fb; /* -73 dB = 0xb6ff */ | |
873 | cval->max = 0xfcfe; | |
874 | cval->res = 0x0073; | |
875 | } | |
876 | break; | |
877 | ||
878 | case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */ | |
879 | case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */ | |
880 | if (strcmp(kctl->id.name, "Effect Duration") == 0) { | |
881 | usb_audio_info(chip, | |
882 | "set quirk for FTU Effect Duration\n"); | |
883 | cval->min = 0x0000; | |
884 | cval->max = 0x7f00; | |
885 | cval->res = 0x0100; | |
886 | break; | |
887 | } | |
888 | if (strcmp(kctl->id.name, "Effect Volume") == 0 || | |
889 | strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { | |
890 | usb_audio_info(chip, | |
891 | "set quirks for FTU Effect Feedback/Volume\n"); | |
892 | cval->min = 0x00; | |
893 | cval->max = 0x7f; | |
894 | break; | |
895 | } | |
896 | break; | |
897 | ||
898 | case USB_ID(0x0471, 0x0101): | |
899 | case USB_ID(0x0471, 0x0104): | |
900 | case USB_ID(0x0471, 0x0105): | |
901 | case USB_ID(0x0672, 0x1041): | |
902 | /* quirk for UDA1321/N101. | |
903 | * note that detection between firmware 2.1.1.7 (N101) | |
904 | * and later 2.1.1.21 is not very clear from datasheets. | |
905 | * I hope that the min value is -15360 for newer firmware --jk | |
906 | */ | |
907 | if (!strcmp(kctl->id.name, "PCM Playback Volume") && | |
908 | cval->min == -15616) { | |
909 | usb_audio_info(chip, | |
910 | "set volume quirk for UDA1321/N101 chip\n"); | |
911 | cval->max = -256; | |
912 | } | |
913 | break; | |
914 | ||
915 | case USB_ID(0x046d, 0x09a4): | |
916 | if (!strcmp(kctl->id.name, "Mic Capture Volume")) { | |
917 | usb_audio_info(chip, | |
918 | "set volume quirk for QuickCam E3500\n"); | |
919 | cval->min = 6080; | |
920 | cval->max = 8768; | |
921 | cval->res = 192; | |
922 | } | |
923 | break; | |
924 | ||
925 | case USB_ID(0x046d, 0x0807): /* Logitech Webcam C500 */ | |
926 | case USB_ID(0x046d, 0x0808): | |
927 | case USB_ID(0x046d, 0x0809): | |
928 | case USB_ID(0x046d, 0x0819): /* Logitech Webcam C210 */ | |
929 | case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */ | |
930 | case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ | |
931 | case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ | |
932 | case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */ | |
933 | case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */ | |
934 | case USB_ID(0x046d, 0x0991): | |
935 | case USB_ID(0x046d, 0x09a2): /* QuickCam Communicate Deluxe/S7500 */ | |
936 | /* Most audio usb devices lie about volume resolution. | |
937 | * Most Logitech webcams have res = 384. | |
938 | * Probably there is some logitech magic behind this number --fishor | |
939 | */ | |
940 | if (!strcmp(kctl->id.name, "Mic Capture Volume")) { | |
941 | usb_audio_info(chip, | |
942 | "set resolution quirk: cval->res = 384\n"); | |
943 | cval->res = 384; | |
944 | } | |
945 | break; | |
946 | } | |
947 | } | |
948 | ||
949 | /* | |
950 | * retrieve the minimum and maximum values for the specified control | |
951 | */ | |
952 | static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval, | |
953 | int default_min, struct snd_kcontrol *kctl) | |
954 | { | |
955 | /* for failsafe */ | |
956 | cval->min = default_min; | |
957 | cval->max = cval->min + 1; | |
958 | cval->res = 1; | |
959 | cval->dBmin = cval->dBmax = 0; | |
960 | ||
961 | if (cval->val_type == USB_MIXER_BOOLEAN || | |
962 | cval->val_type == USB_MIXER_INV_BOOLEAN) { | |
963 | cval->initialized = 1; | |
964 | } else { | |
965 | int minchn = 0; | |
966 | if (cval->cmask) { | |
967 | int i; | |
968 | for (i = 0; i < MAX_CHANNELS; i++) | |
969 | if (cval->cmask & (1 << i)) { | |
970 | minchn = i + 1; | |
971 | break; | |
972 | } | |
973 | } | |
974 | if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || | |
975 | get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { | |
976 | usb_audio_err(cval->head.mixer->chip, | |
977 | "%d:%d: cannot get min/max values for control %d (id %d)\n", | |
978 | cval->head.id, snd_usb_ctrl_intf(cval->head.mixer->chip), | |
979 | cval->control, cval->head.id); | |
980 | return -EINVAL; | |
981 | } | |
982 | if (get_ctl_value(cval, UAC_GET_RES, | |
983 | (cval->control << 8) | minchn, | |
984 | &cval->res) < 0) { | |
985 | cval->res = 1; | |
986 | } else { | |
987 | int last_valid_res = cval->res; | |
988 | ||
989 | while (cval->res > 1) { | |
990 | if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES, | |
991 | (cval->control << 8) | minchn, | |
992 | cval->res / 2) < 0) | |
993 | break; | |
994 | cval->res /= 2; | |
995 | } | |
996 | if (get_ctl_value(cval, UAC_GET_RES, | |
997 | (cval->control << 8) | minchn, &cval->res) < 0) | |
998 | cval->res = last_valid_res; | |
999 | } | |
1000 | if (cval->res == 0) | |
1001 | cval->res = 1; | |
1002 | ||
1003 | /* Additional checks for the proper resolution | |
1004 | * | |
1005 | * Some devices report smaller resolutions than actually | |
1006 | * reacting. They don't return errors but simply clip | |
1007 | * to the lower aligned value. | |
1008 | */ | |
1009 | if (cval->min + cval->res < cval->max) { | |
1010 | int last_valid_res = cval->res; | |
1011 | int saved, test, check; | |
1012 | get_cur_mix_raw(cval, minchn, &saved); | |
1013 | for (;;) { | |
1014 | test = saved; | |
1015 | if (test < cval->max) | |
1016 | test += cval->res; | |
1017 | else | |
1018 | test -= cval->res; | |
1019 | if (test < cval->min || test > cval->max || | |
1020 | snd_usb_set_cur_mix_value(cval, minchn, 0, test) || | |
1021 | get_cur_mix_raw(cval, minchn, &check)) { | |
1022 | cval->res = last_valid_res; | |
1023 | break; | |
1024 | } | |
1025 | if (test == check) | |
1026 | break; | |
1027 | cval->res *= 2; | |
1028 | } | |
1029 | snd_usb_set_cur_mix_value(cval, minchn, 0, saved); | |
1030 | } | |
1031 | ||
1032 | cval->initialized = 1; | |
1033 | } | |
1034 | ||
1035 | if (kctl) | |
1036 | volume_control_quirks(cval, kctl); | |
1037 | ||
1038 | /* USB descriptions contain the dB scale in 1/256 dB unit | |
1039 | * while ALSA TLV contains in 1/100 dB unit | |
1040 | */ | |
1041 | cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256; | |
1042 | cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256; | |
1043 | if (cval->dBmin > cval->dBmax) { | |
1044 | /* something is wrong; assume it's either from/to 0dB */ | |
1045 | if (cval->dBmin < 0) | |
1046 | cval->dBmax = 0; | |
1047 | else if (cval->dBmin > 0) | |
1048 | cval->dBmin = 0; | |
1049 | if (cval->dBmin > cval->dBmax) { | |
1050 | /* totally crap, return an error */ | |
1051 | return -EINVAL; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | #define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL) | |
1059 | ||
1060 | /* get a feature/mixer unit info */ | |
1061 | static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, | |
1062 | struct snd_ctl_elem_info *uinfo) | |
1063 | { | |
1064 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
1065 | ||
1066 | if (cval->val_type == USB_MIXER_BOOLEAN || | |
1067 | cval->val_type == USB_MIXER_INV_BOOLEAN) | |
1068 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1069 | else | |
1070 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1071 | uinfo->count = cval->channels; | |
1072 | if (cval->val_type == USB_MIXER_BOOLEAN || | |
1073 | cval->val_type == USB_MIXER_INV_BOOLEAN) { | |
1074 | uinfo->value.integer.min = 0; | |
1075 | uinfo->value.integer.max = 1; | |
1076 | } else { | |
1077 | if (!cval->initialized) { | |
1078 | get_min_max_with_quirks(cval, 0, kcontrol); | |
1079 | if (cval->initialized && cval->dBmin >= cval->dBmax) { | |
1080 | kcontrol->vd[0].access &= | |
1081 | ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ | | |
1082 | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK); | |
1083 | snd_ctl_notify(cval->head.mixer->chip->card, | |
1084 | SNDRV_CTL_EVENT_MASK_INFO, | |
1085 | &kcontrol->id); | |
1086 | } | |
1087 | } | |
1088 | uinfo->value.integer.min = 0; | |
1089 | uinfo->value.integer.max = | |
1090 | (cval->max - cval->min + cval->res - 1) / cval->res; | |
1091 | } | |
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | /* get the current value from feature/mixer unit */ | |
1096 | static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, | |
1097 | struct snd_ctl_elem_value *ucontrol) | |
1098 | { | |
1099 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
1100 | int c, cnt, val, err; | |
1101 | ||
1102 | ucontrol->value.integer.value[0] = cval->min; | |
1103 | if (cval->cmask) { | |
1104 | cnt = 0; | |
1105 | for (c = 0; c < MAX_CHANNELS; c++) { | |
1106 | if (!(cval->cmask & (1 << c))) | |
1107 | continue; | |
1108 | err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &val); | |
1109 | if (err < 0) | |
1110 | return filter_error(cval, err); | |
1111 | val = get_relative_value(cval, val); | |
1112 | ucontrol->value.integer.value[cnt] = val; | |
1113 | cnt++; | |
1114 | } | |
1115 | return 0; | |
1116 | } else { | |
1117 | /* master channel */ | |
1118 | err = snd_usb_get_cur_mix_value(cval, 0, 0, &val); | |
1119 | if (err < 0) | |
1120 | return filter_error(cval, err); | |
1121 | val = get_relative_value(cval, val); | |
1122 | ucontrol->value.integer.value[0] = val; | |
1123 | } | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | /* put the current value to feature/mixer unit */ | |
1128 | static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, | |
1129 | struct snd_ctl_elem_value *ucontrol) | |
1130 | { | |
1131 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
1132 | int c, cnt, val, oval, err; | |
1133 | int changed = 0; | |
1134 | ||
1135 | if (cval->cmask) { | |
1136 | cnt = 0; | |
1137 | for (c = 0; c < MAX_CHANNELS; c++) { | |
1138 | if (!(cval->cmask & (1 << c))) | |
1139 | continue; | |
1140 | err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &oval); | |
1141 | if (err < 0) | |
1142 | return filter_error(cval, err); | |
1143 | val = ucontrol->value.integer.value[cnt]; | |
1144 | val = get_abs_value(cval, val); | |
1145 | if (oval != val) { | |
1146 | snd_usb_set_cur_mix_value(cval, c + 1, cnt, val); | |
1147 | changed = 1; | |
1148 | } | |
1149 | cnt++; | |
1150 | } | |
1151 | } else { | |
1152 | /* master channel */ | |
1153 | err = snd_usb_get_cur_mix_value(cval, 0, 0, &oval); | |
1154 | if (err < 0) | |
1155 | return filter_error(cval, err); | |
1156 | val = ucontrol->value.integer.value[0]; | |
1157 | val = get_abs_value(cval, val); | |
1158 | if (val != oval) { | |
1159 | snd_usb_set_cur_mix_value(cval, 0, 0, val); | |
1160 | changed = 1; | |
1161 | } | |
1162 | } | |
1163 | return changed; | |
1164 | } | |
1165 | ||
1166 | static struct snd_kcontrol_new usb_feature_unit_ctl = { | |
1167 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
1168 | .name = "", /* will be filled later manually */ | |
1169 | .info = mixer_ctl_feature_info, | |
1170 | .get = mixer_ctl_feature_get, | |
1171 | .put = mixer_ctl_feature_put, | |
1172 | }; | |
1173 | ||
1174 | /* the read-only variant */ | |
1175 | static struct snd_kcontrol_new usb_feature_unit_ctl_ro = { | |
1176 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
1177 | .name = "", /* will be filled later manually */ | |
1178 | .info = mixer_ctl_feature_info, | |
1179 | .get = mixer_ctl_feature_get, | |
1180 | .put = NULL, | |
1181 | }; | |
1182 | ||
1183 | /* | |
1184 | * This symbol is exported in order to allow the mixer quirks to | |
1185 | * hook up to the standard feature unit control mechanism | |
1186 | */ | |
1187 | struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; | |
1188 | ||
1189 | /* | |
1190 | * build a feature control | |
1191 | */ | |
1192 | static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str) | |
1193 | { | |
1194 | return strlcat(kctl->id.name, str, sizeof(kctl->id.name)); | |
1195 | } | |
1196 | ||
1197 | /* | |
1198 | * A lot of headsets/headphones have a "Speaker" mixer. Make sure we | |
1199 | * rename it to "Headphone". We determine if something is a headphone | |
1200 | * similar to how udev determines form factor. | |
1201 | */ | |
1202 | static void check_no_speaker_on_headset(struct snd_kcontrol *kctl, | |
1203 | struct snd_card *card) | |
1204 | { | |
1205 | const char *names_to_check[] = { | |
1206 | "Headset", "headset", "Headphone", "headphone", NULL}; | |
1207 | const char **s; | |
1208 | bool found = false; | |
1209 | ||
1210 | if (strcmp("Speaker", kctl->id.name)) | |
1211 | return; | |
1212 | ||
1213 | for (s = names_to_check; *s; s++) | |
1214 | if (strstr(card->shortname, *s)) { | |
1215 | found = true; | |
1216 | break; | |
1217 | } | |
1218 | ||
1219 | if (!found) | |
1220 | return; | |
1221 | ||
1222 | strlcpy(kctl->id.name, "Headphone", sizeof(kctl->id.name)); | |
1223 | } | |
1224 | ||
1225 | static void build_feature_ctl(struct mixer_build *state, void *raw_desc, | |
1226 | unsigned int ctl_mask, int control, | |
1227 | struct usb_audio_term *iterm, int unitid, | |
1228 | int readonly_mask) | |
1229 | { | |
1230 | struct uac_feature_unit_descriptor *desc = raw_desc; | |
1231 | struct usb_feature_control_info *ctl_info; | |
1232 | unsigned int len = 0; | |
1233 | int mapped_name = 0; | |
1234 | int nameid = uac_feature_unit_iFeature(desc); | |
1235 | struct snd_kcontrol *kctl; | |
1236 | struct usb_mixer_elem_info *cval; | |
1237 | const struct usbmix_name_map *map; | |
1238 | unsigned int range; | |
1239 | ||
1240 | control++; /* change from zero-based to 1-based value */ | |
1241 | ||
1242 | if (control == UAC_FU_GRAPHIC_EQUALIZER) { | |
1243 | /* FIXME: not supported yet */ | |
1244 | return; | |
1245 | } | |
1246 | ||
1247 | map = find_map(state, unitid, control); | |
1248 | if (check_ignored_ctl(map)) | |
1249 | return; | |
1250 | ||
1251 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); | |
1252 | if (!cval) | |
1253 | return; | |
1254 | snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); | |
1255 | cval->control = control; | |
1256 | cval->cmask = ctl_mask; | |
1257 | ctl_info = &audio_feature_info[control-1]; | |
1258 | if (state->mixer->protocol == UAC_VERSION_1) | |
1259 | cval->val_type = ctl_info->type; | |
1260 | else /* UAC_VERSION_2 */ | |
1261 | cval->val_type = ctl_info->type_uac2 >= 0 ? | |
1262 | ctl_info->type_uac2 : ctl_info->type; | |
1263 | ||
1264 | if (ctl_mask == 0) { | |
1265 | cval->channels = 1; /* master channel */ | |
1266 | cval->master_readonly = readonly_mask; | |
1267 | } else { | |
1268 | int i, c = 0; | |
1269 | for (i = 0; i < 16; i++) | |
1270 | if (ctl_mask & (1 << i)) | |
1271 | c++; | |
1272 | cval->channels = c; | |
1273 | cval->ch_readonly = readonly_mask; | |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * If all channels in the mask are marked read-only, make the control | |
1278 | * read-only. snd_usb_set_cur_mix_value() will check the mask again and won't | |
1279 | * issue write commands to read-only channels. | |
1280 | */ | |
1281 | if (cval->channels == readonly_mask) | |
1282 | kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval); | |
1283 | else | |
1284 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); | |
1285 | ||
1286 | if (!kctl) { | |
1287 | usb_audio_err(state->chip, "cannot malloc kcontrol\n"); | |
1288 | kfree(cval); | |
1289 | return; | |
1290 | } | |
1291 | kctl->private_free = snd_usb_mixer_elem_free; | |
1292 | ||
1293 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); | |
1294 | mapped_name = len != 0; | |
1295 | if (!len && nameid) | |
1296 | len = snd_usb_copy_string_desc(state, nameid, | |
1297 | kctl->id.name, sizeof(kctl->id.name)); | |
1298 | ||
1299 | switch (control) { | |
1300 | case UAC_FU_MUTE: | |
1301 | case UAC_FU_VOLUME: | |
1302 | /* | |
1303 | * determine the control name. the rule is: | |
1304 | * - if a name id is given in descriptor, use it. | |
1305 | * - if the connected input can be determined, then use the name | |
1306 | * of terminal type. | |
1307 | * - if the connected output can be determined, use it. | |
1308 | * - otherwise, anonymous name. | |
1309 | */ | |
1310 | if (!len) { | |
1311 | len = get_term_name(state, iterm, kctl->id.name, | |
1312 | sizeof(kctl->id.name), 1); | |
1313 | if (!len) | |
1314 | len = get_term_name(state, &state->oterm, | |
1315 | kctl->id.name, | |
1316 | sizeof(kctl->id.name), 1); | |
1317 | if (!len) | |
1318 | snprintf(kctl->id.name, sizeof(kctl->id.name), | |
1319 | "Feature %d", unitid); | |
1320 | } | |
1321 | ||
1322 | if (!mapped_name) | |
1323 | check_no_speaker_on_headset(kctl, state->mixer->chip->card); | |
1324 | ||
1325 | /* | |
1326 | * determine the stream direction: | |
1327 | * if the connected output is USB stream, then it's likely a | |
1328 | * capture stream. otherwise it should be playback (hopefully :) | |
1329 | */ | |
1330 | if (!mapped_name && !(state->oterm.type >> 16)) { | |
1331 | if ((state->oterm.type & 0xff00) == 0x0100) | |
1332 | append_ctl_name(kctl, " Capture"); | |
1333 | else | |
1334 | append_ctl_name(kctl, " Playback"); | |
1335 | } | |
1336 | append_ctl_name(kctl, control == UAC_FU_MUTE ? | |
1337 | " Switch" : " Volume"); | |
1338 | break; | |
1339 | default: | |
1340 | if (!len) | |
1341 | strlcpy(kctl->id.name, audio_feature_info[control-1].name, | |
1342 | sizeof(kctl->id.name)); | |
1343 | break; | |
1344 | } | |
1345 | ||
1346 | /* get min/max values */ | |
1347 | get_min_max_with_quirks(cval, 0, kctl); | |
1348 | ||
1349 | if (control == UAC_FU_VOLUME) { | |
1350 | check_mapped_dB(map, cval); | |
1351 | if (cval->dBmin < cval->dBmax || !cval->initialized) { | |
1352 | kctl->tlv.c = snd_usb_mixer_vol_tlv; | |
1353 | kctl->vd[0].access |= | |
1354 | SNDRV_CTL_ELEM_ACCESS_TLV_READ | | |
1355 | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; | |
1356 | } | |
1357 | } | |
1358 | ||
1359 | snd_usb_mixer_fu_apply_quirk(state->mixer, cval, unitid, kctl); | |
1360 | ||
1361 | range = (cval->max - cval->min) / cval->res; | |
1362 | /* | |
1363 | * Are there devices with volume range more than 255? I use a bit more | |
1364 | * to be sure. 384 is a resolution magic number found on Logitech | |
1365 | * devices. It will definitively catch all buggy Logitech devices. | |
1366 | */ | |
1367 | if (range > 384) { | |
1368 | usb_audio_warn(state->chip, | |
1369 | "Warning! Unlikely big volume range (=%u), cval->res is probably wrong.", | |
1370 | range); | |
1371 | usb_audio_warn(state->chip, | |
1372 | "[%d] FU [%s] ch = %d, val = %d/%d/%d", | |
1373 | cval->head.id, kctl->id.name, cval->channels, | |
1374 | cval->min, cval->max, cval->res); | |
1375 | } | |
1376 | ||
1377 | usb_audio_dbg(state->chip, "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", | |
1378 | cval->head.id, kctl->id.name, cval->channels, | |
1379 | cval->min, cval->max, cval->res); | |
1380 | snd_usb_mixer_add_control(&cval->head, kctl); | |
1381 | } | |
1382 | ||
1383 | static int parse_clock_source_unit(struct mixer_build *state, int unitid, | |
1384 | void *_ftr) | |
1385 | { | |
1386 | struct uac_clock_source_descriptor *hdr = _ftr; | |
1387 | struct usb_mixer_elem_info *cval; | |
1388 | struct snd_kcontrol *kctl; | |
1389 | char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; | |
1390 | int ret; | |
1391 | ||
1392 | if (state->mixer->protocol != UAC_VERSION_2) | |
1393 | return -EINVAL; | |
1394 | ||
1395 | if (hdr->bLength != sizeof(*hdr)) { | |
1396 | usb_audio_dbg(state->chip, | |
1397 | "Bogus clock source descriptor length of %d, ignoring.\n", | |
1398 | hdr->bLength); | |
1399 | return 0; | |
1400 | } | |
1401 | ||
1402 | /* | |
1403 | * The only property of this unit we are interested in is the | |
1404 | * clock source validity. If that isn't readable, just bail out. | |
1405 | */ | |
1406 | if (!uac2_control_is_readable(hdr->bmControls, | |
1407 | ilog2(UAC2_CS_CONTROL_CLOCK_VALID))) | |
1408 | return 0; | |
1409 | ||
1410 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); | |
1411 | if (!cval) | |
1412 | return -ENOMEM; | |
1413 | ||
1414 | snd_usb_mixer_elem_init_std(&cval->head, state->mixer, hdr->bClockID); | |
1415 | ||
1416 | cval->min = 0; | |
1417 | cval->max = 1; | |
1418 | cval->channels = 1; | |
1419 | cval->val_type = USB_MIXER_BOOLEAN; | |
1420 | cval->control = UAC2_CS_CONTROL_CLOCK_VALID; | |
1421 | ||
1422 | if (uac2_control_is_writeable(hdr->bmControls, | |
1423 | ilog2(UAC2_CS_CONTROL_CLOCK_VALID))) | |
1424 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); | |
1425 | else { | |
1426 | cval->master_readonly = 1; | |
1427 | kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval); | |
1428 | } | |
1429 | ||
1430 | if (!kctl) { | |
1431 | kfree(cval); | |
1432 | return -ENOMEM; | |
1433 | } | |
1434 | ||
1435 | kctl->private_free = snd_usb_mixer_elem_free; | |
1436 | ret = snd_usb_copy_string_desc(state, hdr->iClockSource, | |
1437 | name, sizeof(name)); | |
1438 | if (ret > 0) | |
1439 | snprintf(kctl->id.name, sizeof(kctl->id.name), | |
1440 | "%s Validity", name); | |
1441 | else | |
1442 | snprintf(kctl->id.name, sizeof(kctl->id.name), | |
1443 | "Clock Source %d Validity", hdr->bClockID); | |
1444 | ||
1445 | return snd_usb_mixer_add_control(&cval->head, kctl); | |
1446 | } | |
1447 | ||
1448 | /* | |
1449 | * parse a feature unit | |
1450 | * | |
1451 | * most of controls are defined here. | |
1452 | */ | |
1453 | static int parse_audio_feature_unit(struct mixer_build *state, int unitid, | |
1454 | void *_ftr) | |
1455 | { | |
1456 | int channels, i, j; | |
1457 | struct usb_audio_term iterm; | |
1458 | unsigned int master_bits, first_ch_bits; | |
1459 | int err, csize; | |
1460 | struct uac_feature_unit_descriptor *hdr = _ftr; | |
1461 | __u8 *bmaControls; | |
1462 | ||
1463 | if (state->mixer->protocol == UAC_VERSION_1) { | |
1464 | csize = hdr->bControlSize; | |
1465 | if (!csize) { | |
1466 | usb_audio_dbg(state->chip, | |
1467 | "unit %u: invalid bControlSize == 0\n", | |
1468 | unitid); | |
1469 | return -EINVAL; | |
1470 | } | |
1471 | channels = (hdr->bLength - 7) / csize - 1; | |
1472 | bmaControls = hdr->bmaControls; | |
1473 | if (hdr->bLength < 7 + csize) { | |
1474 | usb_audio_err(state->chip, | |
1475 | "unit %u: invalid UAC_FEATURE_UNIT descriptor\n", | |
1476 | unitid); | |
1477 | return -EINVAL; | |
1478 | } | |
1479 | } else { | |
1480 | struct uac2_feature_unit_descriptor *ftr = _ftr; | |
1481 | csize = 4; | |
1482 | channels = (hdr->bLength - 6) / 4 - 1; | |
1483 | bmaControls = ftr->bmaControls; | |
1484 | if (hdr->bLength < 6 + csize) { | |
1485 | usb_audio_err(state->chip, | |
1486 | "unit %u: invalid UAC_FEATURE_UNIT descriptor\n", | |
1487 | unitid); | |
1488 | return -EINVAL; | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | /* parse the source unit */ | |
1493 | if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0) | |
1494 | return err; | |
1495 | ||
1496 | /* determine the input source type and name */ | |
1497 | err = check_input_term(state, hdr->bSourceID, &iterm); | |
1498 | if (err < 0) | |
1499 | return err; | |
1500 | ||
1501 | master_bits = snd_usb_combine_bytes(bmaControls, csize); | |
1502 | /* master configuration quirks */ | |
1503 | switch (state->chip->usb_id) { | |
1504 | case USB_ID(0x08bb, 0x2702): | |
1505 | usb_audio_info(state->chip, | |
1506 | "usbmixer: master volume quirk for PCM2702 chip\n"); | |
1507 | /* disable non-functional volume control */ | |
1508 | master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); | |
1509 | break; | |
1510 | case USB_ID(0x1130, 0xf211): | |
1511 | usb_audio_info(state->chip, | |
1512 | "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n"); | |
1513 | /* disable non-functional volume control */ | |
1514 | channels = 0; | |
1515 | break; | |
1516 | ||
1517 | } | |
1518 | if (channels > 0) | |
1519 | first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize); | |
1520 | else | |
1521 | first_ch_bits = 0; | |
1522 | ||
1523 | if (state->mixer->protocol == UAC_VERSION_1) { | |
1524 | /* check all control types */ | |
1525 | for (i = 0; i < 10; i++) { | |
1526 | unsigned int ch_bits = 0; | |
1527 | for (j = 0; j < channels; j++) { | |
1528 | unsigned int mask; | |
1529 | ||
1530 | mask = snd_usb_combine_bytes(bmaControls + | |
1531 | csize * (j+1), csize); | |
1532 | if (mask & (1 << i)) | |
1533 | ch_bits |= (1 << j); | |
1534 | } | |
1535 | /* audio class v1 controls are never read-only */ | |
1536 | ||
1537 | /* | |
1538 | * The first channel must be set | |
1539 | * (for ease of programming). | |
1540 | */ | |
1541 | if (ch_bits & 1) | |
1542 | build_feature_ctl(state, _ftr, ch_bits, i, | |
1543 | &iterm, unitid, 0); | |
1544 | if (master_bits & (1 << i)) | |
1545 | build_feature_ctl(state, _ftr, 0, i, &iterm, | |
1546 | unitid, 0); | |
1547 | } | |
1548 | } else { /* UAC_VERSION_2 */ | |
1549 | for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) { | |
1550 | unsigned int ch_bits = 0; | |
1551 | unsigned int ch_read_only = 0; | |
1552 | ||
1553 | for (j = 0; j < channels; j++) { | |
1554 | unsigned int mask; | |
1555 | ||
1556 | mask = snd_usb_combine_bytes(bmaControls + | |
1557 | csize * (j+1), csize); | |
1558 | if (uac2_control_is_readable(mask, i)) { | |
1559 | ch_bits |= (1 << j); | |
1560 | if (!uac2_control_is_writeable(mask, i)) | |
1561 | ch_read_only |= (1 << j); | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | /* | |
1566 | * NOTE: build_feature_ctl() will mark the control | |
1567 | * read-only if all channels are marked read-only in | |
1568 | * the descriptors. Otherwise, the control will be | |
1569 | * reported as writeable, but the driver will not | |
1570 | * actually issue a write command for read-only | |
1571 | * channels. | |
1572 | */ | |
1573 | ||
1574 | /* | |
1575 | * The first channel must be set | |
1576 | * (for ease of programming). | |
1577 | */ | |
1578 | if (ch_bits & 1) | |
1579 | build_feature_ctl(state, _ftr, ch_bits, i, | |
1580 | &iterm, unitid, ch_read_only); | |
1581 | if (uac2_control_is_readable(master_bits, i)) | |
1582 | build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, | |
1583 | !uac2_control_is_writeable(master_bits, i)); | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | return 0; | |
1588 | } | |
1589 | ||
1590 | /* | |
1591 | * Mixer Unit | |
1592 | */ | |
1593 | ||
1594 | /* | |
1595 | * build a mixer unit control | |
1596 | * | |
1597 | * the callbacks are identical with feature unit. | |
1598 | * input channel number (zero based) is given in control field instead. | |
1599 | */ | |
1600 | static void build_mixer_unit_ctl(struct mixer_build *state, | |
1601 | struct uac_mixer_unit_descriptor *desc, | |
1602 | int in_pin, int in_ch, int unitid, | |
1603 | struct usb_audio_term *iterm) | |
1604 | { | |
1605 | struct usb_mixer_elem_info *cval; | |
1606 | unsigned int num_outs = uac_mixer_unit_bNrChannels(desc); | |
1607 | unsigned int i, len; | |
1608 | struct snd_kcontrol *kctl; | |
1609 | const struct usbmix_name_map *map; | |
1610 | ||
1611 | map = find_map(state, unitid, 0); | |
1612 | if (check_ignored_ctl(map)) | |
1613 | return; | |
1614 | ||
1615 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); | |
1616 | if (!cval) | |
1617 | return; | |
1618 | ||
1619 | snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); | |
1620 | cval->control = in_ch + 1; /* based on 1 */ | |
1621 | cval->val_type = USB_MIXER_S16; | |
1622 | for (i = 0; i < num_outs; i++) { | |
1623 | __u8 *c = uac_mixer_unit_bmControls(desc, state->mixer->protocol); | |
1624 | ||
1625 | if (check_matrix_bitmap(c, in_ch, i, num_outs)) { | |
1626 | cval->cmask |= (1 << i); | |
1627 | cval->channels++; | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | /* get min/max values */ | |
1632 | get_min_max(cval, 0); | |
1633 | ||
1634 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); | |
1635 | if (!kctl) { | |
1636 | usb_audio_err(state->chip, "cannot malloc kcontrol\n"); | |
1637 | kfree(cval); | |
1638 | return; | |
1639 | } | |
1640 | kctl->private_free = snd_usb_mixer_elem_free; | |
1641 | ||
1642 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); | |
1643 | if (!len) | |
1644 | len = get_term_name(state, iterm, kctl->id.name, | |
1645 | sizeof(kctl->id.name), 0); | |
1646 | if (!len) | |
1647 | len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); | |
1648 | append_ctl_name(kctl, " Volume"); | |
1649 | ||
1650 | usb_audio_dbg(state->chip, "[%d] MU [%s] ch = %d, val = %d/%d\n", | |
1651 | cval->head.id, kctl->id.name, cval->channels, cval->min, cval->max); | |
1652 | snd_usb_mixer_add_control(&cval->head, kctl); | |
1653 | } | |
1654 | ||
1655 | /* | |
1656 | * parse a mixer unit | |
1657 | */ | |
1658 | static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, | |
1659 | void *raw_desc) | |
1660 | { | |
1661 | struct uac_mixer_unit_descriptor *desc = raw_desc; | |
1662 | struct usb_audio_term iterm; | |
1663 | int input_pins, num_ins, num_outs; | |
1664 | int pin, ich, err; | |
1665 | ||
1666 | if (desc->bLength < 11 || !(input_pins = desc->bNrInPins) || | |
1667 | !(num_outs = uac_mixer_unit_bNrChannels(desc))) { | |
1668 | usb_audio_err(state->chip, | |
1669 | "invalid MIXER UNIT descriptor %d\n", | |
1670 | unitid); | |
1671 | return -EINVAL; | |
1672 | } | |
1673 | ||
1674 | num_ins = 0; | |
1675 | ich = 0; | |
1676 | for (pin = 0; pin < input_pins; pin++) { | |
1677 | err = parse_audio_unit(state, desc->baSourceID[pin]); | |
1678 | if (err < 0) | |
1679 | continue; | |
1680 | /* no bmControls field (e.g. Maya44) -> ignore */ | |
1681 | if (desc->bLength <= 10 + input_pins) | |
1682 | continue; | |
1683 | err = check_input_term(state, desc->baSourceID[pin], &iterm); | |
1684 | if (err < 0) | |
1685 | return err; | |
1686 | num_ins += iterm.channels; | |
1687 | for (; ich < num_ins; ich++) { | |
1688 | int och, ich_has_controls = 0; | |
1689 | ||
1690 | for (och = 0; och < num_outs; och++) { | |
1691 | __u8 *c = uac_mixer_unit_bmControls(desc, | |
1692 | state->mixer->protocol); | |
1693 | ||
1694 | if (check_matrix_bitmap(c, ich, och, num_outs)) { | |
1695 | ich_has_controls = 1; | |
1696 | break; | |
1697 | } | |
1698 | } | |
1699 | if (ich_has_controls) | |
1700 | build_mixer_unit_ctl(state, desc, pin, ich, | |
1701 | unitid, &iterm); | |
1702 | } | |
1703 | } | |
1704 | return 0; | |
1705 | } | |
1706 | ||
1707 | /* | |
1708 | * Processing Unit / Extension Unit | |
1709 | */ | |
1710 | ||
1711 | /* get callback for processing/extension unit */ | |
1712 | static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, | |
1713 | struct snd_ctl_elem_value *ucontrol) | |
1714 | { | |
1715 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
1716 | int err, val; | |
1717 | ||
1718 | err = get_cur_ctl_value(cval, cval->control << 8, &val); | |
1719 | if (err < 0) { | |
1720 | ucontrol->value.integer.value[0] = cval->min; | |
1721 | return filter_error(cval, err); | |
1722 | } | |
1723 | val = get_relative_value(cval, val); | |
1724 | ucontrol->value.integer.value[0] = val; | |
1725 | return 0; | |
1726 | } | |
1727 | ||
1728 | /* put callback for processing/extension unit */ | |
1729 | static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, | |
1730 | struct snd_ctl_elem_value *ucontrol) | |
1731 | { | |
1732 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
1733 | int val, oval, err; | |
1734 | ||
1735 | err = get_cur_ctl_value(cval, cval->control << 8, &oval); | |
1736 | if (err < 0) | |
1737 | return filter_error(cval, err); | |
1738 | val = ucontrol->value.integer.value[0]; | |
1739 | val = get_abs_value(cval, val); | |
1740 | if (val != oval) { | |
1741 | set_cur_ctl_value(cval, cval->control << 8, val); | |
1742 | return 1; | |
1743 | } | |
1744 | return 0; | |
1745 | } | |
1746 | ||
1747 | /* alsa control interface for processing/extension unit */ | |
1748 | static struct snd_kcontrol_new mixer_procunit_ctl = { | |
1749 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
1750 | .name = "", /* will be filled later */ | |
1751 | .info = mixer_ctl_feature_info, | |
1752 | .get = mixer_ctl_procunit_get, | |
1753 | .put = mixer_ctl_procunit_put, | |
1754 | }; | |
1755 | ||
1756 | /* | |
1757 | * predefined data for processing units | |
1758 | */ | |
1759 | struct procunit_value_info { | |
1760 | int control; | |
1761 | char *suffix; | |
1762 | int val_type; | |
1763 | int min_value; | |
1764 | }; | |
1765 | ||
1766 | struct procunit_info { | |
1767 | int type; | |
1768 | char *name; | |
1769 | struct procunit_value_info *values; | |
1770 | }; | |
1771 | ||
1772 | static struct procunit_value_info updown_proc_info[] = { | |
1773 | { UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN }, | |
1774 | { UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, | |
1775 | { 0 } | |
1776 | }; | |
1777 | static struct procunit_value_info prologic_proc_info[] = { | |
1778 | { UAC_DP_ENABLE, "Switch", USB_MIXER_BOOLEAN }, | |
1779 | { UAC_DP_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, | |
1780 | { 0 } | |
1781 | }; | |
1782 | static struct procunit_value_info threed_enh_proc_info[] = { | |
1783 | { UAC_3D_ENABLE, "Switch", USB_MIXER_BOOLEAN }, | |
1784 | { UAC_3D_SPACE, "Spaciousness", USB_MIXER_U8 }, | |
1785 | { 0 } | |
1786 | }; | |
1787 | static struct procunit_value_info reverb_proc_info[] = { | |
1788 | { UAC_REVERB_ENABLE, "Switch", USB_MIXER_BOOLEAN }, | |
1789 | { UAC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, | |
1790 | { UAC_REVERB_TIME, "Time", USB_MIXER_U16 }, | |
1791 | { UAC_REVERB_FEEDBACK, "Feedback", USB_MIXER_U8 }, | |
1792 | { 0 } | |
1793 | }; | |
1794 | static struct procunit_value_info chorus_proc_info[] = { | |
1795 | { UAC_CHORUS_ENABLE, "Switch", USB_MIXER_BOOLEAN }, | |
1796 | { UAC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, | |
1797 | { UAC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, | |
1798 | { UAC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, | |
1799 | { 0 } | |
1800 | }; | |
1801 | static struct procunit_value_info dcr_proc_info[] = { | |
1802 | { UAC_DCR_ENABLE, "Switch", USB_MIXER_BOOLEAN }, | |
1803 | { UAC_DCR_RATE, "Ratio", USB_MIXER_U16 }, | |
1804 | { UAC_DCR_MAXAMPL, "Max Amp", USB_MIXER_S16 }, | |
1805 | { UAC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, | |
1806 | { UAC_DCR_ATTACK_TIME, "Attack Time", USB_MIXER_U16 }, | |
1807 | { UAC_DCR_RELEASE_TIME, "Release Time", USB_MIXER_U16 }, | |
1808 | { 0 } | |
1809 | }; | |
1810 | ||
1811 | static struct procunit_info procunits[] = { | |
1812 | { UAC_PROCESS_UP_DOWNMIX, "Up Down", updown_proc_info }, | |
1813 | { UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic", prologic_proc_info }, | |
1814 | { UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", threed_enh_proc_info }, | |
1815 | { UAC_PROCESS_REVERB, "Reverb", reverb_proc_info }, | |
1816 | { UAC_PROCESS_CHORUS, "Chorus", chorus_proc_info }, | |
1817 | { UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info }, | |
1818 | { 0 }, | |
1819 | }; | |
1820 | /* | |
1821 | * predefined data for extension units | |
1822 | */ | |
1823 | static struct procunit_value_info clock_rate_xu_info[] = { | |
1824 | { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 }, | |
1825 | { 0 } | |
1826 | }; | |
1827 | static struct procunit_value_info clock_source_xu_info[] = { | |
1828 | { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN }, | |
1829 | { 0 } | |
1830 | }; | |
1831 | static struct procunit_value_info spdif_format_xu_info[] = { | |
1832 | { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN }, | |
1833 | { 0 } | |
1834 | }; | |
1835 | static struct procunit_value_info soft_limit_xu_info[] = { | |
1836 | { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN }, | |
1837 | { 0 } | |
1838 | }; | |
1839 | static struct procunit_info extunits[] = { | |
1840 | { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info }, | |
1841 | { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info }, | |
1842 | { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info }, | |
1843 | { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info }, | |
1844 | { 0 } | |
1845 | }; | |
1846 | ||
1847 | /* | |
1848 | * build a processing/extension unit | |
1849 | */ | |
1850 | static int build_audio_procunit(struct mixer_build *state, int unitid, | |
1851 | void *raw_desc, struct procunit_info *list, | |
1852 | char *name) | |
1853 | { | |
1854 | struct uac_processing_unit_descriptor *desc = raw_desc; | |
1855 | int num_ins = desc->bNrInPins; | |
1856 | struct usb_mixer_elem_info *cval; | |
1857 | struct snd_kcontrol *kctl; | |
1858 | int i, err, nameid, type, len; | |
1859 | struct procunit_info *info; | |
1860 | struct procunit_value_info *valinfo; | |
1861 | const struct usbmix_name_map *map; | |
1862 | static struct procunit_value_info default_value_info[] = { | |
1863 | { 0x01, "Switch", USB_MIXER_BOOLEAN }, | |
1864 | { 0 } | |
1865 | }; | |
1866 | static struct procunit_info default_info = { | |
1867 | 0, NULL, default_value_info | |
1868 | }; | |
1869 | ||
1870 | if (desc->bLength < 13 || desc->bLength < 13 + num_ins || | |
1871 | desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) { | |
1872 | usb_audio_err(state->chip, "invalid %s descriptor (id %d)\n", name, unitid); | |
1873 | return -EINVAL; | |
1874 | } | |
1875 | ||
1876 | for (i = 0; i < num_ins; i++) { | |
1877 | if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) | |
1878 | return err; | |
1879 | } | |
1880 | ||
1881 | type = le16_to_cpu(desc->wProcessType); | |
1882 | for (info = list; info && info->type; info++) | |
1883 | if (info->type == type) | |
1884 | break; | |
1885 | if (!info || !info->type) | |
1886 | info = &default_info; | |
1887 | ||
1888 | for (valinfo = info->values; valinfo->control; valinfo++) { | |
1889 | __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol); | |
1890 | ||
1891 | if (!(controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1)))) | |
1892 | continue; | |
1893 | map = find_map(state, unitid, valinfo->control); | |
1894 | if (check_ignored_ctl(map)) | |
1895 | continue; | |
1896 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); | |
1897 | if (!cval) | |
1898 | return -ENOMEM; | |
1899 | snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); | |
1900 | cval->control = valinfo->control; | |
1901 | cval->val_type = valinfo->val_type; | |
1902 | cval->channels = 1; | |
1903 | ||
1904 | /* get min/max values */ | |
1905 | if (type == UAC_PROCESS_UP_DOWNMIX && cval->control == UAC_UD_MODE_SELECT) { | |
1906 | __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol); | |
1907 | /* FIXME: hard-coded */ | |
1908 | cval->min = 1; | |
1909 | cval->max = control_spec[0]; | |
1910 | cval->res = 1; | |
1911 | cval->initialized = 1; | |
1912 | } else { | |
1913 | if (type == USB_XU_CLOCK_RATE) { | |
1914 | /* | |
1915 | * E-Mu USB 0404/0202/TrackerPre/0204 | |
1916 | * samplerate control quirk | |
1917 | */ | |
1918 | cval->min = 0; | |
1919 | cval->max = 5; | |
1920 | cval->res = 1; | |
1921 | cval->initialized = 1; | |
1922 | } else | |
1923 | get_min_max(cval, valinfo->min_value); | |
1924 | } | |
1925 | ||
1926 | kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); | |
1927 | if (!kctl) { | |
1928 | kfree(cval); | |
1929 | return -ENOMEM; | |
1930 | } | |
1931 | kctl->private_free = snd_usb_mixer_elem_free; | |
1932 | ||
1933 | if (check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name))) { | |
1934 | /* nothing */ ; | |
1935 | } else if (info->name) { | |
1936 | strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); | |
1937 | } else { | |
1938 | nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol); | |
1939 | len = 0; | |
1940 | if (nameid) | |
1941 | len = snd_usb_copy_string_desc(state, nameid, | |
1942 | kctl->id.name, | |
1943 | sizeof(kctl->id.name)); | |
1944 | if (!len) | |
1945 | strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); | |
1946 | } | |
1947 | append_ctl_name(kctl, " "); | |
1948 | append_ctl_name(kctl, valinfo->suffix); | |
1949 | ||
1950 | usb_audio_dbg(state->chip, | |
1951 | "[%d] PU [%s] ch = %d, val = %d/%d\n", | |
1952 | cval->head.id, kctl->id.name, cval->channels, | |
1953 | cval->min, cval->max); | |
1954 | ||
1955 | err = snd_usb_mixer_add_control(&cval->head, kctl); | |
1956 | if (err < 0) | |
1957 | return err; | |
1958 | } | |
1959 | return 0; | |
1960 | } | |
1961 | ||
1962 | static int parse_audio_processing_unit(struct mixer_build *state, int unitid, | |
1963 | void *raw_desc) | |
1964 | { | |
1965 | return build_audio_procunit(state, unitid, raw_desc, | |
1966 | procunits, "Processing Unit"); | |
1967 | } | |
1968 | ||
1969 | static int parse_audio_extension_unit(struct mixer_build *state, int unitid, | |
1970 | void *raw_desc) | |
1971 | { | |
1972 | /* | |
1973 | * Note that we parse extension units with processing unit descriptors. | |
1974 | * That's ok as the layout is the same. | |
1975 | */ | |
1976 | return build_audio_procunit(state, unitid, raw_desc, | |
1977 | extunits, "Extension Unit"); | |
1978 | } | |
1979 | ||
1980 | /* | |
1981 | * Selector Unit | |
1982 | */ | |
1983 | ||
1984 | /* | |
1985 | * info callback for selector unit | |
1986 | * use an enumerator type for routing | |
1987 | */ | |
1988 | static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, | |
1989 | struct snd_ctl_elem_info *uinfo) | |
1990 | { | |
1991 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
1992 | const char **itemlist = (const char **)kcontrol->private_value; | |
1993 | ||
1994 | if (snd_BUG_ON(!itemlist)) | |
1995 | return -EINVAL; | |
1996 | return snd_ctl_enum_info(uinfo, 1, cval->max, itemlist); | |
1997 | } | |
1998 | ||
1999 | /* get callback for selector unit */ | |
2000 | static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, | |
2001 | struct snd_ctl_elem_value *ucontrol) | |
2002 | { | |
2003 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
2004 | int val, err; | |
2005 | ||
2006 | err = get_cur_ctl_value(cval, cval->control << 8, &val); | |
2007 | if (err < 0) { | |
2008 | ucontrol->value.enumerated.item[0] = 0; | |
2009 | return filter_error(cval, err); | |
2010 | } | |
2011 | val = get_relative_value(cval, val); | |
2012 | ucontrol->value.enumerated.item[0] = val; | |
2013 | return 0; | |
2014 | } | |
2015 | ||
2016 | /* put callback for selector unit */ | |
2017 | static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, | |
2018 | struct snd_ctl_elem_value *ucontrol) | |
2019 | { | |
2020 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
2021 | int val, oval, err; | |
2022 | ||
2023 | err = get_cur_ctl_value(cval, cval->control << 8, &oval); | |
2024 | if (err < 0) | |
2025 | return filter_error(cval, err); | |
2026 | val = ucontrol->value.enumerated.item[0]; | |
2027 | val = get_abs_value(cval, val); | |
2028 | if (val != oval) { | |
2029 | set_cur_ctl_value(cval, cval->control << 8, val); | |
2030 | return 1; | |
2031 | } | |
2032 | return 0; | |
2033 | } | |
2034 | ||
2035 | /* alsa control interface for selector unit */ | |
2036 | static struct snd_kcontrol_new mixer_selectunit_ctl = { | |
2037 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
2038 | .name = "", /* will be filled later */ | |
2039 | .info = mixer_ctl_selector_info, | |
2040 | .get = mixer_ctl_selector_get, | |
2041 | .put = mixer_ctl_selector_put, | |
2042 | }; | |
2043 | ||
2044 | /* | |
2045 | * private free callback. | |
2046 | * free both private_data and private_value | |
2047 | */ | |
2048 | static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) | |
2049 | { | |
2050 | int i, num_ins = 0; | |
2051 | ||
2052 | if (kctl->private_data) { | |
2053 | struct usb_mixer_elem_info *cval = kctl->private_data; | |
2054 | num_ins = cval->max; | |
2055 | kfree(cval); | |
2056 | kctl->private_data = NULL; | |
2057 | } | |
2058 | if (kctl->private_value) { | |
2059 | char **itemlist = (char **)kctl->private_value; | |
2060 | for (i = 0; i < num_ins; i++) | |
2061 | kfree(itemlist[i]); | |
2062 | kfree(itemlist); | |
2063 | kctl->private_value = 0; | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | /* | |
2068 | * parse a selector unit | |
2069 | */ | |
2070 | static int parse_audio_selector_unit(struct mixer_build *state, int unitid, | |
2071 | void *raw_desc) | |
2072 | { | |
2073 | struct uac_selector_unit_descriptor *desc = raw_desc; | |
2074 | unsigned int i, nameid, len; | |
2075 | int err; | |
2076 | struct usb_mixer_elem_info *cval; | |
2077 | struct snd_kcontrol *kctl; | |
2078 | const struct usbmix_name_map *map; | |
2079 | char **namelist; | |
2080 | ||
2081 | if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) { | |
2082 | usb_audio_err(state->chip, | |
2083 | "invalid SELECTOR UNIT descriptor %d\n", unitid); | |
2084 | return -EINVAL; | |
2085 | } | |
2086 | ||
2087 | for (i = 0; i < desc->bNrInPins; i++) { | |
2088 | if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) | |
2089 | return err; | |
2090 | } | |
2091 | ||
2092 | if (desc->bNrInPins == 1) /* only one ? nonsense! */ | |
2093 | return 0; | |
2094 | ||
2095 | map = find_map(state, unitid, 0); | |
2096 | if (check_ignored_ctl(map)) | |
2097 | return 0; | |
2098 | ||
2099 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); | |
2100 | if (!cval) | |
2101 | return -ENOMEM; | |
2102 | snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid); | |
2103 | cval->val_type = USB_MIXER_U8; | |
2104 | cval->channels = 1; | |
2105 | cval->min = 1; | |
2106 | cval->max = desc->bNrInPins; | |
2107 | cval->res = 1; | |
2108 | cval->initialized = 1; | |
2109 | ||
2110 | if (state->mixer->protocol == UAC_VERSION_1) | |
2111 | cval->control = 0; | |
2112 | else /* UAC_VERSION_2 */ | |
2113 | cval->control = (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) ? | |
2114 | UAC2_CX_CLOCK_SELECTOR : UAC2_SU_SELECTOR; | |
2115 | ||
2116 | namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL); | |
2117 | if (!namelist) { | |
2118 | kfree(cval); | |
2119 | return -ENOMEM; | |
2120 | } | |
2121 | #define MAX_ITEM_NAME_LEN 64 | |
2122 | for (i = 0; i < desc->bNrInPins; i++) { | |
2123 | struct usb_audio_term iterm; | |
2124 | len = 0; | |
2125 | namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); | |
2126 | if (!namelist[i]) { | |
2127 | while (i--) | |
2128 | kfree(namelist[i]); | |
2129 | kfree(namelist); | |
2130 | kfree(cval); | |
2131 | return -ENOMEM; | |
2132 | } | |
2133 | len = check_mapped_selector_name(state, unitid, i, namelist[i], | |
2134 | MAX_ITEM_NAME_LEN); | |
2135 | if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0) | |
2136 | len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); | |
2137 | if (! len) | |
2138 | sprintf(namelist[i], "Input %u", i); | |
2139 | } | |
2140 | ||
2141 | kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); | |
2142 | if (! kctl) { | |
2143 | usb_audio_err(state->chip, "cannot malloc kcontrol\n"); | |
2144 | kfree(namelist); | |
2145 | kfree(cval); | |
2146 | return -ENOMEM; | |
2147 | } | |
2148 | kctl->private_value = (unsigned long)namelist; | |
2149 | kctl->private_free = usb_mixer_selector_elem_free; | |
2150 | ||
2151 | nameid = uac_selector_unit_iSelector(desc); | |
2152 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); | |
2153 | if (len) | |
2154 | ; | |
2155 | else if (nameid) | |
2156 | snd_usb_copy_string_desc(state, nameid, kctl->id.name, | |
2157 | sizeof(kctl->id.name)); | |
2158 | else { | |
2159 | len = get_term_name(state, &state->oterm, | |
2160 | kctl->id.name, sizeof(kctl->id.name), 0); | |
2161 | if (!len) | |
2162 | strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); | |
2163 | ||
2164 | if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) | |
2165 | append_ctl_name(kctl, " Clock Source"); | |
2166 | else if ((state->oterm.type & 0xff00) == 0x0100) | |
2167 | append_ctl_name(kctl, " Capture Source"); | |
2168 | else | |
2169 | append_ctl_name(kctl, " Playback Source"); | |
2170 | } | |
2171 | ||
2172 | usb_audio_dbg(state->chip, "[%d] SU [%s] items = %d\n", | |
2173 | cval->head.id, kctl->id.name, desc->bNrInPins); | |
2174 | return snd_usb_mixer_add_control(&cval->head, kctl); | |
2175 | } | |
2176 | ||
2177 | /* | |
2178 | * parse an audio unit recursively | |
2179 | */ | |
2180 | ||
2181 | static int parse_audio_unit(struct mixer_build *state, int unitid) | |
2182 | { | |
2183 | unsigned char *p1; | |
2184 | ||
2185 | if (test_and_set_bit(unitid, state->unitbitmap)) | |
2186 | return 0; /* the unit already visited */ | |
2187 | ||
2188 | p1 = find_audio_control_unit(state, unitid); | |
2189 | if (!p1) { | |
2190 | usb_audio_err(state->chip, "unit %d not found!\n", unitid); | |
2191 | return -EINVAL; | |
2192 | } | |
2193 | ||
2194 | switch (p1[2]) { | |
2195 | case UAC_INPUT_TERMINAL: | |
2196 | return 0; /* NOP */ | |
2197 | case UAC_MIXER_UNIT: | |
2198 | return parse_audio_mixer_unit(state, unitid, p1); | |
2199 | case UAC2_CLOCK_SOURCE: | |
2200 | return parse_clock_source_unit(state, unitid, p1); | |
2201 | case UAC_SELECTOR_UNIT: | |
2202 | case UAC2_CLOCK_SELECTOR: | |
2203 | return parse_audio_selector_unit(state, unitid, p1); | |
2204 | case UAC_FEATURE_UNIT: | |
2205 | return parse_audio_feature_unit(state, unitid, p1); | |
2206 | case UAC1_PROCESSING_UNIT: | |
2207 | /* UAC2_EFFECT_UNIT has the same value */ | |
2208 | if (state->mixer->protocol == UAC_VERSION_1) | |
2209 | return parse_audio_processing_unit(state, unitid, p1); | |
2210 | else | |
2211 | return 0; /* FIXME - effect units not implemented yet */ | |
2212 | case UAC1_EXTENSION_UNIT: | |
2213 | /* UAC2_PROCESSING_UNIT_V2 has the same value */ | |
2214 | if (state->mixer->protocol == UAC_VERSION_1) | |
2215 | return parse_audio_extension_unit(state, unitid, p1); | |
2216 | else /* UAC_VERSION_2 */ | |
2217 | return parse_audio_processing_unit(state, unitid, p1); | |
2218 | case UAC2_EXTENSION_UNIT_V2: | |
2219 | return parse_audio_extension_unit(state, unitid, p1); | |
2220 | default: | |
2221 | usb_audio_err(state->chip, | |
2222 | "unit %u: unexpected type 0x%02x\n", unitid, p1[2]); | |
2223 | return -EINVAL; | |
2224 | } | |
2225 | } | |
2226 | ||
2227 | static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) | |
2228 | { | |
2229 | kfree(mixer->id_elems); | |
2230 | if (mixer->urb) { | |
2231 | kfree(mixer->urb->transfer_buffer); | |
2232 | usb_free_urb(mixer->urb); | |
2233 | } | |
2234 | usb_free_urb(mixer->rc_urb); | |
2235 | kfree(mixer->rc_setup_packet); | |
2236 | kfree(mixer); | |
2237 | } | |
2238 | ||
2239 | static int snd_usb_mixer_dev_free(struct snd_device *device) | |
2240 | { | |
2241 | struct usb_mixer_interface *mixer = device->device_data; | |
2242 | snd_usb_mixer_free(mixer); | |
2243 | return 0; | |
2244 | } | |
2245 | ||
2246 | /* | |
2247 | * create mixer controls | |
2248 | * | |
2249 | * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers | |
2250 | */ | |
2251 | static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) | |
2252 | { | |
2253 | struct mixer_build state; | |
2254 | int err; | |
2255 | const struct usbmix_ctl_map *map; | |
2256 | void *p; | |
2257 | ||
2258 | memset(&state, 0, sizeof(state)); | |
2259 | state.chip = mixer->chip; | |
2260 | state.mixer = mixer; | |
2261 | state.buffer = mixer->hostif->extra; | |
2262 | state.buflen = mixer->hostif->extralen; | |
2263 | ||
2264 | /* check the mapping table */ | |
2265 | for (map = usbmix_ctl_maps; map->id; map++) { | |
2266 | if (map->id == state.chip->usb_id) { | |
2267 | state.map = map->map; | |
2268 | state.selector_map = map->selector_map; | |
2269 | mixer->ignore_ctl_error = map->ignore_ctl_error; | |
2270 | break; | |
2271 | } | |
2272 | } | |
2273 | ||
2274 | p = NULL; | |
2275 | while ((p = snd_usb_find_csint_desc(mixer->hostif->extra, | |
2276 | mixer->hostif->extralen, | |
2277 | p, UAC_OUTPUT_TERMINAL)) != NULL) { | |
2278 | if (mixer->protocol == UAC_VERSION_1) { | |
2279 | struct uac1_output_terminal_descriptor *desc = p; | |
2280 | ||
2281 | if (desc->bLength < sizeof(*desc)) | |
2282 | continue; /* invalid descriptor? */ | |
2283 | /* mark terminal ID as visited */ | |
2284 | set_bit(desc->bTerminalID, state.unitbitmap); | |
2285 | state.oterm.id = desc->bTerminalID; | |
2286 | state.oterm.type = le16_to_cpu(desc->wTerminalType); | |
2287 | state.oterm.name = desc->iTerminal; | |
2288 | err = parse_audio_unit(&state, desc->bSourceID); | |
2289 | if (err < 0 && err != -EINVAL) | |
2290 | return err; | |
2291 | } else { /* UAC_VERSION_2 */ | |
2292 | struct uac2_output_terminal_descriptor *desc = p; | |
2293 | ||
2294 | if (desc->bLength < sizeof(*desc)) | |
2295 | continue; /* invalid descriptor? */ | |
2296 | /* mark terminal ID as visited */ | |
2297 | set_bit(desc->bTerminalID, state.unitbitmap); | |
2298 | state.oterm.id = desc->bTerminalID; | |
2299 | state.oterm.type = le16_to_cpu(desc->wTerminalType); | |
2300 | state.oterm.name = desc->iTerminal; | |
2301 | err = parse_audio_unit(&state, desc->bSourceID); | |
2302 | if (err < 0 && err != -EINVAL) | |
2303 | return err; | |
2304 | ||
2305 | /* | |
2306 | * For UAC2, use the same approach to also add the | |
2307 | * clock selectors | |
2308 | */ | |
2309 | err = parse_audio_unit(&state, desc->bCSourceID); | |
2310 | if (err < 0 && err != -EINVAL) | |
2311 | return err; | |
2312 | } | |
2313 | } | |
2314 | ||
2315 | return 0; | |
2316 | } | |
2317 | ||
2318 | void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) | |
2319 | { | |
2320 | struct usb_mixer_elem_list *list; | |
2321 | ||
2322 | for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem) | |
2323 | snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, | |
2324 | &list->kctl->id); | |
2325 | } | |
2326 | ||
2327 | static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer, | |
2328 | struct usb_mixer_elem_list *list) | |
2329 | { | |
2330 | struct usb_mixer_elem_info *cval = (struct usb_mixer_elem_info *)list; | |
2331 | static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN", | |
2332 | "S8", "U8", "S16", "U16"}; | |
2333 | snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, " | |
2334 | "channels=%i, type=\"%s\"\n", cval->head.id, | |
2335 | cval->control, cval->cmask, cval->channels, | |
2336 | val_types[cval->val_type]); | |
2337 | snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n", | |
2338 | cval->min, cval->max, cval->dBmin, cval->dBmax); | |
2339 | } | |
2340 | ||
2341 | static void snd_usb_mixer_proc_read(struct snd_info_entry *entry, | |
2342 | struct snd_info_buffer *buffer) | |
2343 | { | |
2344 | struct snd_usb_audio *chip = entry->private_data; | |
2345 | struct usb_mixer_interface *mixer; | |
2346 | struct usb_mixer_elem_list *list; | |
2347 | int unitid; | |
2348 | ||
2349 | list_for_each_entry(mixer, &chip->mixer_list, list) { | |
2350 | snd_iprintf(buffer, | |
2351 | "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n", | |
2352 | chip->usb_id, snd_usb_ctrl_intf(chip), | |
2353 | mixer->ignore_ctl_error); | |
2354 | snd_iprintf(buffer, "Card: %s\n", chip->card->longname); | |
2355 | for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) { | |
2356 | for (list = mixer->id_elems[unitid]; list; | |
2357 | list = list->next_id_elem) { | |
2358 | snd_iprintf(buffer, " Unit: %i\n", list->id); | |
2359 | if (list->kctl) | |
2360 | snd_iprintf(buffer, | |
2361 | " Control: name=\"%s\", index=%i\n", | |
2362 | list->kctl->id.name, | |
2363 | list->kctl->id.index); | |
2364 | if (list->dump) | |
2365 | list->dump(buffer, list); | |
2366 | } | |
2367 | } | |
2368 | } | |
2369 | } | |
2370 | ||
2371 | static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer, | |
2372 | int attribute, int value, int index) | |
2373 | { | |
2374 | struct usb_mixer_elem_list *list; | |
2375 | __u8 unitid = (index >> 8) & 0xff; | |
2376 | __u8 control = (value >> 8) & 0xff; | |
2377 | __u8 channel = value & 0xff; | |
2378 | unsigned int count = 0; | |
2379 | ||
2380 | if (channel >= MAX_CHANNELS) { | |
2381 | usb_audio_dbg(mixer->chip, | |
2382 | "%s(): bogus channel number %d\n", | |
2383 | __func__, channel); | |
2384 | return; | |
2385 | } | |
2386 | ||
2387 | for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem) | |
2388 | count++; | |
2389 | ||
2390 | if (count == 0) | |
2391 | return; | |
2392 | ||
2393 | for (list = mixer->id_elems[unitid]; list; list = list->next_id_elem) { | |
2394 | struct usb_mixer_elem_info *info; | |
2395 | ||
2396 | if (!list->kctl) | |
2397 | continue; | |
2398 | ||
2399 | info = (struct usb_mixer_elem_info *)list; | |
2400 | if (count > 1 && info->control != control) | |
2401 | continue; | |
2402 | ||
2403 | switch (attribute) { | |
2404 | case UAC2_CS_CUR: | |
2405 | /* invalidate cache, so the value is read from the device */ | |
2406 | if (channel) | |
2407 | info->cached &= ~(1 << channel); | |
2408 | else /* master channel */ | |
2409 | info->cached = 0; | |
2410 | ||
2411 | snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, | |
2412 | &info->head.kctl->id); | |
2413 | break; | |
2414 | ||
2415 | case UAC2_CS_RANGE: | |
2416 | /* TODO */ | |
2417 | break; | |
2418 | ||
2419 | case UAC2_CS_MEM: | |
2420 | /* TODO */ | |
2421 | break; | |
2422 | ||
2423 | default: | |
2424 | usb_audio_dbg(mixer->chip, | |
2425 | "unknown attribute %d in interrupt\n", | |
2426 | attribute); | |
2427 | break; | |
2428 | } /* switch */ | |
2429 | } | |
2430 | } | |
2431 | ||
2432 | static void snd_usb_mixer_interrupt(struct urb *urb) | |
2433 | { | |
2434 | struct usb_mixer_interface *mixer = urb->context; | |
2435 | int len = urb->actual_length; | |
2436 | int ustatus = urb->status; | |
2437 | ||
2438 | if (ustatus != 0) | |
2439 | goto requeue; | |
2440 | ||
2441 | if (mixer->protocol == UAC_VERSION_1) { | |
2442 | struct uac1_status_word *status; | |
2443 | ||
2444 | for (status = urb->transfer_buffer; | |
2445 | len >= sizeof(*status); | |
2446 | len -= sizeof(*status), status++) { | |
2447 | dev_dbg(&urb->dev->dev, "status interrupt: %02x %02x\n", | |
2448 | status->bStatusType, | |
2449 | status->bOriginator); | |
2450 | ||
2451 | /* ignore any notifications not from the control interface */ | |
2452 | if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) != | |
2453 | UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF) | |
2454 | continue; | |
2455 | ||
2456 | if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED) | |
2457 | snd_usb_mixer_rc_memory_change(mixer, status->bOriginator); | |
2458 | else | |
2459 | snd_usb_mixer_notify_id(mixer, status->bOriginator); | |
2460 | } | |
2461 | } else { /* UAC_VERSION_2 */ | |
2462 | struct uac2_interrupt_data_msg *msg; | |
2463 | ||
2464 | for (msg = urb->transfer_buffer; | |
2465 | len >= sizeof(*msg); | |
2466 | len -= sizeof(*msg), msg++) { | |
2467 | /* drop vendor specific and endpoint requests */ | |
2468 | if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) || | |
2469 | (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP)) | |
2470 | continue; | |
2471 | ||
2472 | snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute, | |
2473 | le16_to_cpu(msg->wValue), | |
2474 | le16_to_cpu(msg->wIndex)); | |
2475 | } | |
2476 | } | |
2477 | ||
2478 | requeue: | |
2479 | if (ustatus != -ENOENT && | |
2480 | ustatus != -ECONNRESET && | |
2481 | ustatus != -ESHUTDOWN) { | |
2482 | urb->dev = mixer->chip->dev; | |
2483 | usb_submit_urb(urb, GFP_ATOMIC); | |
2484 | } | |
2485 | } | |
2486 | ||
2487 | /* create the handler for the optional status interrupt endpoint */ | |
2488 | static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) | |
2489 | { | |
2490 | struct usb_endpoint_descriptor *ep; | |
2491 | void *transfer_buffer; | |
2492 | int buffer_length; | |
2493 | unsigned int epnum; | |
2494 | ||
2495 | /* we need one interrupt input endpoint */ | |
2496 | if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1) | |
2497 | return 0; | |
2498 | ep = get_endpoint(mixer->hostif, 0); | |
2499 | if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep)) | |
2500 | return 0; | |
2501 | ||
2502 | epnum = usb_endpoint_num(ep); | |
2503 | buffer_length = le16_to_cpu(ep->wMaxPacketSize); | |
2504 | transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); | |
2505 | if (!transfer_buffer) | |
2506 | return -ENOMEM; | |
2507 | mixer->urb = usb_alloc_urb(0, GFP_KERNEL); | |
2508 | if (!mixer->urb) { | |
2509 | kfree(transfer_buffer); | |
2510 | return -ENOMEM; | |
2511 | } | |
2512 | usb_fill_int_urb(mixer->urb, mixer->chip->dev, | |
2513 | usb_rcvintpipe(mixer->chip->dev, epnum), | |
2514 | transfer_buffer, buffer_length, | |
2515 | snd_usb_mixer_interrupt, mixer, ep->bInterval); | |
2516 | usb_submit_urb(mixer->urb, GFP_KERNEL); | |
2517 | return 0; | |
2518 | } | |
2519 | ||
2520 | int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, | |
2521 | int ignore_error) | |
2522 | { | |
2523 | static struct snd_device_ops dev_ops = { | |
2524 | .dev_free = snd_usb_mixer_dev_free | |
2525 | }; | |
2526 | struct usb_mixer_interface *mixer; | |
2527 | struct snd_info_entry *entry; | |
2528 | int err; | |
2529 | ||
2530 | strcpy(chip->card->mixername, "USB Mixer"); | |
2531 | ||
2532 | mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); | |
2533 | if (!mixer) | |
2534 | return -ENOMEM; | |
2535 | mixer->chip = chip; | |
2536 | mixer->ignore_ctl_error = ignore_error; | |
2537 | mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems), | |
2538 | GFP_KERNEL); | |
2539 | if (!mixer->id_elems) { | |
2540 | kfree(mixer); | |
2541 | return -ENOMEM; | |
2542 | } | |
2543 | ||
2544 | mixer->hostif = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0]; | |
2545 | switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) { | |
2546 | case UAC_VERSION_1: | |
2547 | default: | |
2548 | mixer->protocol = UAC_VERSION_1; | |
2549 | break; | |
2550 | case UAC_VERSION_2: | |
2551 | mixer->protocol = UAC_VERSION_2; | |
2552 | break; | |
2553 | } | |
2554 | ||
2555 | if ((err = snd_usb_mixer_controls(mixer)) < 0 || | |
2556 | (err = snd_usb_mixer_status_create(mixer)) < 0) | |
2557 | goto _error; | |
2558 | ||
2559 | snd_usb_mixer_apply_create_quirk(mixer); | |
2560 | ||
2561 | err = snd_device_new(chip->card, SNDRV_DEV_CODEC, mixer, &dev_ops); | |
2562 | if (err < 0) | |
2563 | goto _error; | |
2564 | ||
2565 | if (list_empty(&chip->mixer_list) && | |
2566 | !snd_card_proc_new(chip->card, "usbmixer", &entry)) | |
2567 | snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read); | |
2568 | ||
2569 | list_add(&mixer->list, &chip->mixer_list); | |
2570 | return 0; | |
2571 | ||
2572 | _error: | |
2573 | snd_usb_mixer_free(mixer); | |
2574 | return err; | |
2575 | } | |
2576 | ||
2577 | void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer) | |
2578 | { | |
2579 | usb_kill_urb(mixer->urb); | |
2580 | usb_kill_urb(mixer->rc_urb); | |
2581 | } | |
2582 | ||
2583 | #ifdef CONFIG_PM | |
2584 | /* stop any bus activity of a mixer */ | |
2585 | static void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer) | |
2586 | { | |
2587 | usb_kill_urb(mixer->urb); | |
2588 | usb_kill_urb(mixer->rc_urb); | |
2589 | } | |
2590 | ||
2591 | static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) | |
2592 | { | |
2593 | int err; | |
2594 | ||
2595 | if (mixer->urb) { | |
2596 | err = usb_submit_urb(mixer->urb, GFP_NOIO); | |
2597 | if (err < 0) | |
2598 | return err; | |
2599 | } | |
2600 | ||
2601 | return 0; | |
2602 | } | |
2603 | ||
2604 | int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer) | |
2605 | { | |
2606 | snd_usb_mixer_inactivate(mixer); | |
2607 | return 0; | |
2608 | } | |
2609 | ||
2610 | static int restore_mixer_value(struct usb_mixer_elem_list *list) | |
2611 | { | |
2612 | struct usb_mixer_elem_info *cval = (struct usb_mixer_elem_info *)list; | |
2613 | int c, err, idx; | |
2614 | ||
2615 | if (cval->cmask) { | |
2616 | idx = 0; | |
2617 | for (c = 0; c < MAX_CHANNELS; c++) { | |
2618 | if (!(cval->cmask & (1 << c))) | |
2619 | continue; | |
2620 | if (cval->cached & (1 << (c + 1))) { | |
2621 | err = snd_usb_set_cur_mix_value(cval, c + 1, idx, | |
2622 | cval->cache_val[idx]); | |
2623 | if (err < 0) | |
2624 | return err; | |
2625 | } | |
2626 | idx++; | |
2627 | } | |
2628 | } else { | |
2629 | /* master */ | |
2630 | if (cval->cached) { | |
2631 | err = snd_usb_set_cur_mix_value(cval, 0, 0, *cval->cache_val); | |
2632 | if (err < 0) | |
2633 | return err; | |
2634 | } | |
2635 | } | |
2636 | ||
2637 | return 0; | |
2638 | } | |
2639 | ||
2640 | int snd_usb_mixer_resume(struct usb_mixer_interface *mixer, bool reset_resume) | |
2641 | { | |
2642 | struct usb_mixer_elem_list *list; | |
2643 | int id, err; | |
2644 | ||
2645 | if (reset_resume) { | |
2646 | /* restore cached mixer values */ | |
2647 | for (id = 0; id < MAX_ID_ELEMS; id++) { | |
2648 | for (list = mixer->id_elems[id]; list; | |
2649 | list = list->next_id_elem) { | |
2650 | if (list->resume) { | |
2651 | err = list->resume(list); | |
2652 | if (err < 0) | |
2653 | return err; | |
2654 | } | |
2655 | } | |
2656 | } | |
2657 | } | |
2658 | ||
2659 | return snd_usb_mixer_activate(mixer); | |
2660 | } | |
2661 | #endif | |
2662 | ||
2663 | void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list, | |
2664 | struct usb_mixer_interface *mixer, | |
2665 | int unitid) | |
2666 | { | |
2667 | list->mixer = mixer; | |
2668 | list->id = unitid; | |
2669 | list->dump = snd_usb_mixer_dump_cval; | |
2670 | #ifdef CONFIG_PM | |
2671 | list->resume = restore_mixer_value; | |
2672 | #endif | |
2673 | } |