Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | ||
157a57b6 DM |
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 | ||
1da177e4 LT |
45 | #include <linux/bitops.h> |
46 | #include <linux/init.h> | |
47 | #include <linux/list.h> | |
48 | #include <linux/slab.h> | |
49 | #include <linux/string.h> | |
50 | #include <linux/usb.h> | |
28e1b773 | 51 | #include <linux/usb/audio.h> |
23caaf19 | 52 | #include <linux/usb/audio-v2.h> |
28e1b773 | 53 | |
1da177e4 LT |
54 | #include <sound/core.h> |
55 | #include <sound/control.h> | |
b259b10c | 56 | #include <sound/hwdep.h> |
aafad562 | 57 | #include <sound/info.h> |
7bc5ba7e | 58 | #include <sound/tlv.h> |
1da177e4 LT |
59 | |
60 | #include "usbaudio.h" | |
f0b5e634 | 61 | #include "mixer.h" |
e5779998 | 62 | #include "helper.h" |
7b1eda22 | 63 | #include "mixer_quirks.h" |
88a8516a | 64 | #include "power.h" |
4d1a70da | 65 | |
ebfdeea3 JK |
66 | #define MAX_ID_ELEMS 256 |
67 | ||
1da177e4 LT |
68 | struct usb_audio_term { |
69 | int id; | |
70 | int type; | |
71 | int channels; | |
72 | unsigned int chconfig; | |
73 | int name; | |
74 | }; | |
75 | ||
76 | struct usbmix_name_map; | |
77 | ||
86e07d34 TI |
78 | struct mixer_build { |
79 | struct snd_usb_audio *chip; | |
84957a8a | 80 | struct usb_mixer_interface *mixer; |
1da177e4 LT |
81 | unsigned char *buffer; |
82 | unsigned int buflen; | |
291186e0 | 83 | DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS); |
86e07d34 | 84 | struct usb_audio_term oterm; |
1da177e4 | 85 | const struct usbmix_name_map *map; |
8e062ec7 | 86 | const struct usbmix_selector_map *selector_map; |
1da177e4 LT |
87 | }; |
88 | ||
1cdfa9f3 | 89 | /*E-mu 0202/0404/0204 eXtension Unit(XU) control*/ |
7d2b451e SK |
90 | enum { |
91 | USB_XU_CLOCK_RATE = 0xe301, | |
92 | USB_XU_CLOCK_SOURCE = 0xe302, | |
93 | USB_XU_DIGITAL_IO_STATUS = 0xe303, | |
94 | USB_XU_DEVICE_OPTIONS = 0xe304, | |
95 | USB_XU_DIRECT_MONITORING = 0xe305, | |
96 | USB_XU_METERING = 0xe306 | |
97 | }; | |
98 | enum { | |
99 | USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/ | |
100 | USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */ | |
101 | USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */ | |
102 | USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */ | |
103 | }; | |
1da177e4 LT |
104 | |
105 | /* | |
106 | * manual mapping of mixer names | |
107 | * if the mixer topology is too complicated and the parsed names are | |
108 | * ambiguous, add the entries in usbmixer_maps.c. | |
109 | */ | |
f0b5e634 | 110 | #include "mixer_maps.c" |
1da177e4 | 111 | |
c3a3e040 JK |
112 | static const struct usbmix_name_map * |
113 | find_map(struct mixer_build *state, int unitid, int control) | |
1da177e4 | 114 | { |
c3a3e040 | 115 | const struct usbmix_name_map *p = state->map; |
1da177e4 | 116 | |
c3a3e040 JK |
117 | if (!p) |
118 | return NULL; | |
1da177e4 LT |
119 | |
120 | for (p = state->map; p->id; p++) { | |
c3a3e040 JK |
121 | if (p->id == unitid && |
122 | (!control || !p->control || control == p->control)) | |
123 | return p; | |
1da177e4 | 124 | } |
c3a3e040 | 125 | return NULL; |
1da177e4 LT |
126 | } |
127 | ||
c3a3e040 JK |
128 | /* get the mapped name if the unit matches */ |
129 | static int | |
130 | check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen) | |
1da177e4 | 131 | { |
c3a3e040 JK |
132 | if (!p || !p->name) |
133 | return 0; | |
1da177e4 | 134 | |
c3a3e040 JK |
135 | buflen--; |
136 | return strlcpy(buf, p->name, buflen); | |
137 | } | |
138 | ||
139 | /* check whether the control should be ignored */ | |
140 | static inline int | |
141 | check_ignored_ctl(const struct usbmix_name_map *p) | |
142 | { | |
143 | if (!p || p->name || p->dB) | |
1da177e4 | 144 | return 0; |
c3a3e040 JK |
145 | return 1; |
146 | } | |
147 | ||
148 | /* dB mapping */ | |
149 | static inline void check_mapped_dB(const struct usbmix_name_map *p, | |
150 | struct usb_mixer_elem_info *cval) | |
151 | { | |
152 | if (p && p->dB) { | |
153 | cval->dBmin = p->dB->min; | |
154 | cval->dBmax = p->dB->max; | |
38b65190 | 155 | cval->initialized = 1; |
1da177e4 | 156 | } |
1da177e4 LT |
157 | } |
158 | ||
8e062ec7 | 159 | /* get the mapped selector source name */ |
86e07d34 | 160 | static int check_mapped_selector_name(struct mixer_build *state, int unitid, |
8e062ec7 CL |
161 | int index, char *buf, int buflen) |
162 | { | |
163 | const struct usbmix_selector_map *p; | |
164 | ||
165 | if (! state->selector_map) | |
166 | return 0; | |
167 | for (p = state->selector_map; p->id; p++) { | |
168 | if (p->id == unitid && index < p->count) | |
169 | return strlcpy(buf, p->names[index], buflen); | |
170 | } | |
171 | return 0; | |
172 | } | |
173 | ||
1da177e4 LT |
174 | /* |
175 | * find an audio control unit with the given unit id | |
176 | */ | |
86e07d34 | 177 | static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit) |
1da177e4 | 178 | { |
67e1daa0 DM |
179 | /* we just parse the header */ |
180 | struct uac_feature_unit_descriptor *hdr = NULL; | |
181 | ||
182 | while ((hdr = snd_usb_find_desc(state->buffer, state->buflen, hdr, | |
183 | USB_DT_CS_INTERFACE)) != NULL) { | |
184 | if (hdr->bLength >= 4 && | |
185 | hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL && | |
186 | hdr->bDescriptorSubtype <= UAC2_SAMPLE_RATE_CONVERTER && | |
187 | hdr->bUnitID == unit) | |
188 | return hdr; | |
1da177e4 | 189 | } |
67e1daa0 | 190 | |
1da177e4 LT |
191 | return NULL; |
192 | } | |
193 | ||
1da177e4 LT |
194 | /* |
195 | * copy a string with the given id | |
196 | */ | |
86e07d34 | 197 | static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen) |
1da177e4 LT |
198 | { |
199 | int len = usb_string(state->chip->dev, index, buf, maxlen - 1); | |
200 | buf[len] = 0; | |
201 | return len; | |
202 | } | |
203 | ||
204 | /* | |
205 | * convert from the byte/word on usb descriptor to the zero-based integer | |
206 | */ | |
86e07d34 | 207 | static int convert_signed_value(struct usb_mixer_elem_info *cval, int val) |
1da177e4 LT |
208 | { |
209 | switch (cval->val_type) { | |
210 | case USB_MIXER_BOOLEAN: | |
211 | return !!val; | |
212 | case USB_MIXER_INV_BOOLEAN: | |
213 | return !val; | |
214 | case USB_MIXER_U8: | |
215 | val &= 0xff; | |
216 | break; | |
217 | case USB_MIXER_S8: | |
218 | val &= 0xff; | |
219 | if (val >= 0x80) | |
220 | val -= 0x100; | |
221 | break; | |
222 | case USB_MIXER_U16: | |
223 | val &= 0xffff; | |
224 | break; | |
225 | case USB_MIXER_S16: | |
226 | val &= 0xffff; | |
227 | if (val >= 0x8000) | |
228 | val -= 0x10000; | |
229 | break; | |
230 | } | |
231 | return val; | |
232 | } | |
233 | ||
234 | /* | |
235 | * convert from the zero-based int to the byte/word for usb descriptor | |
236 | */ | |
86e07d34 | 237 | static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val) |
1da177e4 LT |
238 | { |
239 | switch (cval->val_type) { | |
240 | case USB_MIXER_BOOLEAN: | |
241 | return !!val; | |
242 | case USB_MIXER_INV_BOOLEAN: | |
243 | return !val; | |
244 | case USB_MIXER_S8: | |
245 | case USB_MIXER_U8: | |
246 | return val & 0xff; | |
247 | case USB_MIXER_S16: | |
248 | case USB_MIXER_U16: | |
249 | return val & 0xffff; | |
250 | } | |
251 | return 0; /* not reached */ | |
252 | } | |
253 | ||
86e07d34 | 254 | static int get_relative_value(struct usb_mixer_elem_info *cval, int val) |
1da177e4 LT |
255 | { |
256 | if (! cval->res) | |
257 | cval->res = 1; | |
258 | if (val < cval->min) | |
259 | return 0; | |
14790f1c TI |
260 | else if (val >= cval->max) |
261 | return (cval->max - cval->min + cval->res - 1) / cval->res; | |
1da177e4 LT |
262 | else |
263 | return (val - cval->min) / cval->res; | |
264 | } | |
265 | ||
86e07d34 | 266 | static int get_abs_value(struct usb_mixer_elem_info *cval, int val) |
1da177e4 LT |
267 | { |
268 | if (val < 0) | |
269 | return cval->min; | |
270 | if (! cval->res) | |
271 | cval->res = 1; | |
272 | val *= cval->res; | |
273 | val += cval->min; | |
274 | if (val > cval->max) | |
275 | return cval->max; | |
276 | return val; | |
277 | } | |
278 | ||
279 | ||
280 | /* | |
281 | * retrieve a mixer value | |
282 | */ | |
283 | ||
23caaf19 | 284 | static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) |
1da177e4 | 285 | { |
3d8d4dcf | 286 | struct snd_usb_audio *chip = cval->mixer->chip; |
1da177e4 LT |
287 | unsigned char buf[2]; |
288 | int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; | |
289 | int timeout = 10; | |
978520b7 | 290 | int idx = 0, err; |
1da177e4 | 291 | |
88a8516a ON |
292 | err = snd_usb_autoresume(cval->mixer->chip); |
293 | if (err < 0) | |
294 | return -EIO; | |
34f3c89f | 295 | down_read(&chip->shutdown_rwsem); |
1da177e4 | 296 | while (timeout-- > 0) { |
978520b7 TI |
297 | if (chip->shutdown) |
298 | break; | |
299 | idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); | |
3d8d4dcf | 300 | if (snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request, |
1da177e4 | 301 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
978520b7 | 302 | validx, idx, buf, val_len) >= val_len) { |
1da177e4 | 303 | *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len)); |
978520b7 TI |
304 | err = 0; |
305 | goto out; | |
1da177e4 LT |
306 | } |
307 | } | |
84957a8a | 308 | snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", |
978520b7 TI |
309 | request, validx, idx, cval->val_type); |
310 | err = -EINVAL; | |
311 | ||
312 | out: | |
34f3c89f | 313 | up_read(&chip->shutdown_rwsem); |
978520b7 TI |
314 | snd_usb_autosuspend(cval->mixer->chip); |
315 | return err; | |
1da177e4 LT |
316 | } |
317 | ||
23caaf19 DM |
318 | static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) |
319 | { | |
3d8d4dcf | 320 | struct snd_usb_audio *chip = cval->mixer->chip; |
e8bdb6bb | 321 | unsigned char buf[2 + 3*sizeof(__u16)]; /* enough space for one range */ |
23caaf19 | 322 | unsigned char *val; |
978520b7 | 323 | int idx = 0, ret, size; |
23caaf19 DM |
324 | __u8 bRequest; |
325 | ||
e8bdb6bb DM |
326 | if (request == UAC_GET_CUR) { |
327 | bRequest = UAC2_CS_CUR; | |
328 | size = sizeof(__u16); | |
329 | } else { | |
330 | bRequest = UAC2_CS_RANGE; | |
331 | size = sizeof(buf); | |
332 | } | |
333 | ||
334 | memset(buf, 0, sizeof(buf)); | |
23caaf19 | 335 | |
88a8516a ON |
336 | ret = snd_usb_autoresume(chip) ? -EIO : 0; |
337 | if (ret) | |
338 | goto error; | |
339 | ||
34f3c89f | 340 | down_read(&chip->shutdown_rwsem); |
978520b7 TI |
341 | if (chip->shutdown) |
342 | ret = -ENODEV; | |
343 | else { | |
344 | idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); | |
345 | ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest, | |
23caaf19 | 346 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, |
978520b7 TI |
347 | validx, idx, buf, size); |
348 | } | |
34f3c89f | 349 | up_read(&chip->shutdown_rwsem); |
88a8516a | 350 | snd_usb_autosuspend(chip); |
23caaf19 DM |
351 | |
352 | if (ret < 0) { | |
88a8516a | 353 | error: |
09414207 | 354 | snd_printk(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n", |
978520b7 | 355 | request, validx, idx, cval->val_type); |
23caaf19 DM |
356 | return ret; |
357 | } | |
358 | ||
e8bdb6bb DM |
359 | /* FIXME: how should we handle multiple triplets here? */ |
360 | ||
23caaf19 DM |
361 | switch (request) { |
362 | case UAC_GET_CUR: | |
363 | val = buf; | |
364 | break; | |
365 | case UAC_GET_MIN: | |
366 | val = buf + sizeof(__u16); | |
367 | break; | |
368 | case UAC_GET_MAX: | |
369 | val = buf + sizeof(__u16) * 2; | |
370 | break; | |
371 | case UAC_GET_RES: | |
372 | val = buf + sizeof(__u16) * 3; | |
373 | break; | |
374 | default: | |
375 | return -EINVAL; | |
376 | } | |
377 | ||
378 | *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16))); | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
383 | static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret) | |
384 | { | |
9f814105 EZ |
385 | validx += cval->idx_off; |
386 | ||
23caaf19 DM |
387 | return (cval->mixer->protocol == UAC_VERSION_1) ? |
388 | get_ctl_value_v1(cval, request, validx, value_ret) : | |
389 | get_ctl_value_v2(cval, request, validx, value_ret); | |
390 | } | |
391 | ||
86e07d34 | 392 | static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value) |
1da177e4 | 393 | { |
de48c7bc | 394 | return get_ctl_value(cval, UAC_GET_CUR, validx, value); |
1da177e4 LT |
395 | } |
396 | ||
397 | /* channel = 0: master, 1 = first channel */ | |
641b4879 TI |
398 | static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval, |
399 | int channel, int *value) | |
1da177e4 | 400 | { |
de48c7bc | 401 | return get_ctl_value(cval, UAC_GET_CUR, (cval->control << 8) | channel, value); |
1da177e4 LT |
402 | } |
403 | ||
641b4879 TI |
404 | static int get_cur_mix_value(struct usb_mixer_elem_info *cval, |
405 | int channel, int index, int *value) | |
406 | { | |
407 | int err; | |
408 | ||
409 | if (cval->cached & (1 << channel)) { | |
410 | *value = cval->cache_val[index]; | |
411 | return 0; | |
412 | } | |
413 | err = get_cur_mix_raw(cval, channel, value); | |
414 | if (err < 0) { | |
415 | if (!cval->mixer->ignore_ctl_error) | |
23caaf19 | 416 | snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n", |
641b4879 TI |
417 | cval->control, channel, err); |
418 | return err; | |
419 | } | |
420 | cval->cached |= 1 << channel; | |
421 | cval->cache_val[index] = *value; | |
422 | return 0; | |
423 | } | |
424 | ||
425 | ||
1da177e4 LT |
426 | /* |
427 | * set a mixer value | |
428 | */ | |
429 | ||
7b1eda22 DM |
430 | int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, |
431 | int request, int validx, int value_set) | |
1da177e4 | 432 | { |
3d8d4dcf | 433 | struct snd_usb_audio *chip = cval->mixer->chip; |
1da177e4 | 434 | unsigned char buf[2]; |
978520b7 | 435 | int idx = 0, val_len, err, timeout = 10; |
23caaf19 | 436 | |
9f814105 EZ |
437 | validx += cval->idx_off; |
438 | ||
23caaf19 DM |
439 | if (cval->mixer->protocol == UAC_VERSION_1) { |
440 | val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1; | |
441 | } else { /* UAC_VERSION_2 */ | |
442 | /* audio class v2 controls are always 2 bytes in size */ | |
443 | val_len = sizeof(__u16); | |
444 | ||
445 | /* FIXME */ | |
446 | if (request != UAC_SET_CUR) { | |
447 | snd_printdd(KERN_WARNING "RANGE setting not yet supported\n"); | |
448 | return -EINVAL; | |
449 | } | |
450 | ||
451 | request = UAC2_CS_CUR; | |
452 | } | |
1da177e4 LT |
453 | |
454 | value_set = convert_bytes_value(cval, value_set); | |
455 | buf[0] = value_set & 0xff; | |
456 | buf[1] = (value_set >> 8) & 0xff; | |
88a8516a ON |
457 | err = snd_usb_autoresume(chip); |
458 | if (err < 0) | |
459 | return -EIO; | |
34f3c89f | 460 | down_read(&chip->shutdown_rwsem); |
978520b7 TI |
461 | while (timeout-- > 0) { |
462 | if (chip->shutdown) | |
463 | break; | |
464 | idx = snd_usb_ctrl_intf(chip) | (cval->id << 8); | |
3d8d4dcf DM |
465 | if (snd_usb_ctl_msg(chip->dev, |
466 | usb_sndctrlpipe(chip->dev, 0), request, | |
1da177e4 | 467 | USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT, |
978520b7 TI |
468 | validx, idx, buf, val_len) >= 0) { |
469 | err = 0; | |
470 | goto out; | |
88a8516a | 471 | } |
978520b7 | 472 | } |
84957a8a | 473 | snd_printdd(KERN_ERR "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n", |
978520b7 TI |
474 | request, validx, idx, cval->val_type, buf[0], buf[1]); |
475 | err = -EINVAL; | |
476 | ||
477 | out: | |
34f3c89f | 478 | up_read(&chip->shutdown_rwsem); |
978520b7 TI |
479 | snd_usb_autosuspend(chip); |
480 | return err; | |
1da177e4 LT |
481 | } |
482 | ||
86e07d34 | 483 | static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value) |
1da177e4 | 484 | { |
7b1eda22 | 485 | return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value); |
1da177e4 LT |
486 | } |
487 | ||
641b4879 TI |
488 | static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel, |
489 | int index, int value) | |
1da177e4 | 490 | { |
641b4879 | 491 | int err; |
a6a33259 DM |
492 | unsigned int read_only = (channel == 0) ? |
493 | cval->master_readonly : | |
494 | cval->ch_readonly & (1 << (channel - 1)); | |
495 | ||
496 | if (read_only) { | |
497 | snd_printdd(KERN_INFO "%s(): channel %d of control %d is read_only\n", | |
498 | __func__, channel, cval->control); | |
499 | return 0; | |
500 | } | |
501 | ||
7b1eda22 | 502 | err = snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel, |
641b4879 TI |
503 | value); |
504 | if (err < 0) | |
505 | return err; | |
506 | cval->cached |= 1 << channel; | |
507 | cval->cache_val[index] = value; | |
508 | return 0; | |
1da177e4 LT |
509 | } |
510 | ||
7bc5ba7e TI |
511 | /* |
512 | * TLV callback for mixer volume controls | |
513 | */ | |
285de9c0 | 514 | int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag, |
7bc5ba7e TI |
515 | unsigned int size, unsigned int __user *_tlv) |
516 | { | |
517 | struct usb_mixer_elem_info *cval = kcontrol->private_data; | |
b8e1c73f | 518 | DECLARE_TLV_DB_MINMAX(scale, 0, 0); |
7bc5ba7e TI |
519 | |
520 | if (size < sizeof(scale)) | |
521 | return -ENOMEM; | |
c3a3e040 JK |
522 | scale[2] = cval->dBmin; |
523 | scale[3] = cval->dBmax; | |
7bc5ba7e TI |
524 | if (copy_to_user(_tlv, scale, sizeof(scale))) |
525 | return -EFAULT; | |
526 | return 0; | |
527 | } | |
1da177e4 LT |
528 | |
529 | /* | |
530 | * parser routines begin here... | |
531 | */ | |
532 | ||
86e07d34 | 533 | static int parse_audio_unit(struct mixer_build *state, int unitid); |
1da177e4 LT |
534 | |
535 | ||
536 | /* | |
537 | * check if the input/output channel routing is enabled on the given bitmap. | |
538 | * used for mixer unit parser | |
539 | */ | |
540 | static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs) | |
541 | { | |
542 | int idx = ich * num_outs + och; | |
543 | return bmap[idx >> 3] & (0x80 >> (idx & 7)); | |
544 | } | |
545 | ||
546 | ||
547 | /* | |
548 | * add an alsa control element | |
549 | * search and increment the index until an empty slot is found. | |
550 | * | |
551 | * if failed, give up and free the control instance. | |
552 | */ | |
553 | ||
ef9d5970 DM |
554 | int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer, |
555 | struct snd_kcontrol *kctl) | |
1da177e4 | 556 | { |
86e07d34 | 557 | struct usb_mixer_elem_info *cval = kctl->private_data; |
1da177e4 | 558 | int err; |
84957a8a | 559 | |
ef9d5970 | 560 | while (snd_ctl_find_id(mixer->chip->card, &kctl->id)) |
1da177e4 | 561 | kctl->id.index++; |
ef9d5970 | 562 | if ((err = snd_ctl_add(mixer->chip->card, kctl)) < 0) { |
1da177e4 | 563 | snd_printd(KERN_ERR "cannot add control (err = %d)\n", err); |
6639b6c2 | 564 | return err; |
1da177e4 | 565 | } |
6639b6c2 | 566 | cval->elem_id = &kctl->id; |
ef9d5970 DM |
567 | cval->next_id_elem = mixer->id_elems[cval->id]; |
568 | mixer->id_elems[cval->id] = cval; | |
6639b6c2 | 569 | return 0; |
1da177e4 LT |
570 | } |
571 | ||
572 | ||
573 | /* | |
574 | * get a terminal name string | |
575 | */ | |
576 | ||
577 | static struct iterm_name_combo { | |
578 | int type; | |
579 | char *name; | |
580 | } iterm_names[] = { | |
581 | { 0x0300, "Output" }, | |
582 | { 0x0301, "Speaker" }, | |
583 | { 0x0302, "Headphone" }, | |
584 | { 0x0303, "HMD Audio" }, | |
585 | { 0x0304, "Desktop Speaker" }, | |
586 | { 0x0305, "Room Speaker" }, | |
587 | { 0x0306, "Com Speaker" }, | |
588 | { 0x0307, "LFE" }, | |
589 | { 0x0600, "External In" }, | |
590 | { 0x0601, "Analog In" }, | |
591 | { 0x0602, "Digital In" }, | |
592 | { 0x0603, "Line" }, | |
593 | { 0x0604, "Legacy In" }, | |
594 | { 0x0605, "IEC958 In" }, | |
595 | { 0x0606, "1394 DA Stream" }, | |
596 | { 0x0607, "1394 DV Stream" }, | |
597 | { 0x0700, "Embedded" }, | |
598 | { 0x0701, "Noise Source" }, | |
599 | { 0x0702, "Equalization Noise" }, | |
600 | { 0x0703, "CD" }, | |
601 | { 0x0704, "DAT" }, | |
602 | { 0x0705, "DCC" }, | |
603 | { 0x0706, "MiniDisk" }, | |
604 | { 0x0707, "Analog Tape" }, | |
605 | { 0x0708, "Phonograph" }, | |
606 | { 0x0709, "VCR Audio" }, | |
607 | { 0x070a, "Video Disk Audio" }, | |
608 | { 0x070b, "DVD Audio" }, | |
609 | { 0x070c, "TV Tuner Audio" }, | |
610 | { 0x070d, "Satellite Rec Audio" }, | |
611 | { 0x070e, "Cable Tuner Audio" }, | |
612 | { 0x070f, "DSS Audio" }, | |
613 | { 0x0710, "Radio Receiver" }, | |
614 | { 0x0711, "Radio Transmitter" }, | |
615 | { 0x0712, "Multi-Track Recorder" }, | |
616 | { 0x0713, "Synthesizer" }, | |
617 | { 0 }, | |
618 | }; | |
619 | ||
86e07d34 | 620 | static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm, |
1da177e4 LT |
621 | unsigned char *name, int maxlen, int term_only) |
622 | { | |
623 | struct iterm_name_combo *names; | |
624 | ||
625 | if (iterm->name) | |
626 | return snd_usb_copy_string_desc(state, iterm->name, name, maxlen); | |
627 | ||
628 | /* virtual type - not a real terminal */ | |
629 | if (iterm->type >> 16) { | |
630 | if (term_only) | |
631 | return 0; | |
632 | switch (iterm->type >> 16) { | |
de48c7bc | 633 | case UAC_SELECTOR_UNIT: |
1da177e4 | 634 | strcpy(name, "Selector"); return 8; |
69da9bcb | 635 | case UAC1_PROCESSING_UNIT: |
1da177e4 | 636 | strcpy(name, "Process Unit"); return 12; |
69da9bcb | 637 | case UAC1_EXTENSION_UNIT: |
1da177e4 | 638 | strcpy(name, "Ext Unit"); return 8; |
de48c7bc | 639 | case UAC_MIXER_UNIT: |
1da177e4 LT |
640 | strcpy(name, "Mixer"); return 5; |
641 | default: | |
642 | return sprintf(name, "Unit %d", iterm->id); | |
643 | } | |
644 | } | |
645 | ||
646 | switch (iterm->type & 0xff00) { | |
647 | case 0x0100: | |
648 | strcpy(name, "PCM"); return 3; | |
649 | case 0x0200: | |
650 | strcpy(name, "Mic"); return 3; | |
651 | case 0x0400: | |
652 | strcpy(name, "Headset"); return 7; | |
653 | case 0x0500: | |
654 | strcpy(name, "Phone"); return 5; | |
655 | } | |
656 | ||
657 | for (names = iterm_names; names->type; names++) | |
658 | if (names->type == iterm->type) { | |
659 | strcpy(name, names->name); | |
660 | return strlen(names->name); | |
661 | } | |
662 | return 0; | |
663 | } | |
664 | ||
665 | ||
666 | /* | |
667 | * parse the source unit recursively until it reaches to a terminal | |
668 | * or a branched unit. | |
669 | */ | |
86e07d34 | 670 | static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term) |
1da177e4 | 671 | { |
09414207 | 672 | int err; |
23caaf19 | 673 | void *p1; |
1da177e4 LT |
674 | |
675 | memset(term, 0, sizeof(*term)); | |
676 | while ((p1 = find_audio_control_unit(state, id)) != NULL) { | |
23caaf19 | 677 | unsigned char *hdr = p1; |
1da177e4 | 678 | term->id = id; |
23caaf19 | 679 | switch (hdr[2]) { |
de48c7bc | 680 | case UAC_INPUT_TERMINAL: |
23caaf19 DM |
681 | if (state->mixer->protocol == UAC_VERSION_1) { |
682 | struct uac_input_terminal_descriptor *d = p1; | |
683 | term->type = le16_to_cpu(d->wTerminalType); | |
684 | term->channels = d->bNrChannels; | |
685 | term->chconfig = le16_to_cpu(d->wChannelConfig); | |
686 | term->name = d->iTerminal; | |
687 | } else { /* UAC_VERSION_2 */ | |
688 | struct uac2_input_terminal_descriptor *d = p1; | |
689 | term->type = le16_to_cpu(d->wTerminalType); | |
690 | term->channels = d->bNrChannels; | |
691 | term->chconfig = le32_to_cpu(d->bmChannelConfig); | |
692 | term->name = d->iTerminal; | |
09414207 DM |
693 | |
694 | /* call recursively to get the clock selectors */ | |
695 | err = check_input_term(state, d->bCSourceID, term); | |
696 | if (err < 0) | |
697 | return err; | |
23caaf19 | 698 | } |
1da177e4 | 699 | return 0; |
23caaf19 DM |
700 | case UAC_FEATURE_UNIT: { |
701 | /* the header is the same for v1 and v2 */ | |
702 | struct uac_feature_unit_descriptor *d = p1; | |
5e688883 | 703 | id = d->bSourceID; |
1da177e4 | 704 | break; /* continue to parse */ |
23caaf19 DM |
705 | } |
706 | case UAC_MIXER_UNIT: { | |
707 | struct uac_mixer_unit_descriptor *d = p1; | |
708 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ | |
709 | term->channels = uac_mixer_unit_bNrChannels(d); | |
710 | term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol); | |
711 | term->name = uac_mixer_unit_iMixer(d); | |
1da177e4 | 712 | return 0; |
23caaf19 | 713 | } |
09414207 DM |
714 | case UAC_SELECTOR_UNIT: |
715 | case UAC2_CLOCK_SELECTOR: { | |
23caaf19 | 716 | struct uac_selector_unit_descriptor *d = p1; |
1da177e4 | 717 | /* call recursively to retrieve the channel info */ |
4d7b86c9 DM |
718 | err = check_input_term(state, d->baSourceID[0], term); |
719 | if (err < 0) | |
720 | return err; | |
23caaf19 | 721 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ |
1da177e4 | 722 | term->id = id; |
23caaf19 | 723 | term->name = uac_selector_unit_iSelector(d); |
1da177e4 | 724 | return 0; |
23caaf19 | 725 | } |
69da9bcb | 726 | case UAC1_PROCESSING_UNIT: |
5dae5fd2 EZ |
727 | case UAC1_EXTENSION_UNIT: |
728 | /* UAC2_PROCESSING_UNIT_V2 */ | |
61ac5130 TH |
729 | /* UAC2_EFFECT_UNIT */ |
730 | case UAC2_EXTENSION_UNIT_V2: { | |
23caaf19 | 731 | struct uac_processing_unit_descriptor *d = p1; |
5dae5fd2 EZ |
732 | |
733 | if (state->mixer->protocol == UAC_VERSION_2 && | |
734 | hdr[2] == UAC2_EFFECT_UNIT) { | |
735 | /* UAC2/UAC1 unit IDs overlap here in an | |
736 | * uncompatible way. Ignore this unit for now. | |
737 | */ | |
738 | return 0; | |
739 | } | |
740 | ||
23caaf19 DM |
741 | if (d->bNrInPins) { |
742 | id = d->baSourceID[0]; | |
1da177e4 LT |
743 | break; /* continue to parse */ |
744 | } | |
23caaf19 DM |
745 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ |
746 | term->channels = uac_processing_unit_bNrChannels(d); | |
747 | term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol); | |
748 | term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol); | |
1da177e4 | 749 | return 0; |
23caaf19 | 750 | } |
09414207 DM |
751 | case UAC2_CLOCK_SOURCE: { |
752 | struct uac_clock_source_descriptor *d = p1; | |
753 | term->type = d->bDescriptorSubtype << 16; /* virtual type */ | |
754 | term->id = id; | |
755 | term->name = d->iClockSource; | |
756 | return 0; | |
757 | } | |
1da177e4 LT |
758 | default: |
759 | return -ENODEV; | |
760 | } | |
761 | } | |
762 | return -ENODEV; | |
763 | } | |
764 | ||
765 | ||
766 | /* | |
767 | * Feature Unit | |
768 | */ | |
769 | ||
770 | /* feature unit control information */ | |
771 | struct usb_feature_control_info { | |
772 | const char *name; | |
773 | unsigned int type; /* control type (mute, volume, etc.) */ | |
774 | }; | |
775 | ||
776 | static struct usb_feature_control_info audio_feature_info[] = { | |
2e0281d1 DM |
777 | { "Mute", USB_MIXER_INV_BOOLEAN }, |
778 | { "Volume", USB_MIXER_S16 }, | |
1da177e4 LT |
779 | { "Tone Control - Bass", USB_MIXER_S8 }, |
780 | { "Tone Control - Mid", USB_MIXER_S8 }, | |
781 | { "Tone Control - Treble", USB_MIXER_S8 }, | |
782 | { "Graphic Equalizer", USB_MIXER_S8 }, /* FIXME: not implemeted yet */ | |
2e0281d1 DM |
783 | { "Auto Gain Control", USB_MIXER_BOOLEAN }, |
784 | { "Delay Control", USB_MIXER_U16 }, | |
785 | { "Bass Boost", USB_MIXER_BOOLEAN }, | |
786 | { "Loudness", USB_MIXER_BOOLEAN }, | |
787 | /* UAC2 specific */ | |
788 | { "Input Gain Control", USB_MIXER_U16 }, | |
789 | { "Input Gain Pad Control", USB_MIXER_BOOLEAN }, | |
790 | { "Phase Inverter Control", USB_MIXER_BOOLEAN }, | |
1da177e4 LT |
791 | }; |
792 | ||
793 | ||
794 | /* private_free callback */ | |
86e07d34 | 795 | static void usb_mixer_elem_free(struct snd_kcontrol *kctl) |
1da177e4 | 796 | { |
4d572776 JJ |
797 | kfree(kctl->private_data); |
798 | kctl->private_data = NULL; | |
1da177e4 LT |
799 | } |
800 | ||
801 | ||
802 | /* | |
803 | * interface to ALSA control for feature/mixer units | |
804 | */ | |
805 | ||
dcaaf9f2 TI |
806 | /* volume control quirks */ |
807 | static void volume_control_quirks(struct usb_mixer_elem_info *cval, | |
808 | struct snd_kcontrol *kctl) | |
809 | { | |
810 | switch (cval->mixer->chip->usb_id) { | |
d50ed624 | 811 | case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ |
e9a25e04 | 812 | case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */ |
d50ed624 EZ |
813 | if (strcmp(kctl->id.name, "Effect Duration") == 0) { |
814 | cval->min = 0x0000; | |
815 | cval->max = 0xffff; | |
816 | cval->res = 0x00e6; | |
817 | break; | |
818 | } | |
819 | if (strcmp(kctl->id.name, "Effect Volume") == 0 || | |
820 | strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { | |
821 | cval->min = 0x00; | |
822 | cval->max = 0xff; | |
823 | break; | |
824 | } | |
825 | if (strstr(kctl->id.name, "Effect Return") != NULL) { | |
826 | cval->min = 0xb706; | |
827 | cval->max = 0xff7b; | |
828 | cval->res = 0x0073; | |
829 | break; | |
830 | } | |
831 | if ((strstr(kctl->id.name, "Playback Volume") != NULL) || | |
832 | (strstr(kctl->id.name, "Effect Send") != NULL)) { | |
833 | cval->min = 0xb5fb; /* -73 dB = 0xb6ff */ | |
834 | cval->max = 0xfcfe; | |
835 | cval->res = 0x0073; | |
836 | } | |
837 | break; | |
838 | ||
d34bf148 FH |
839 | case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */ |
840 | case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */ | |
841 | if (strcmp(kctl->id.name, "Effect Duration") == 0) { | |
842 | snd_printk(KERN_INFO | |
843 | "usb-audio: set quirk for FTU Effect Duration\n"); | |
844 | cval->min = 0x0000; | |
845 | cval->max = 0x7f00; | |
846 | cval->res = 0x0100; | |
847 | break; | |
848 | } | |
849 | if (strcmp(kctl->id.name, "Effect Volume") == 0 || | |
850 | strcmp(kctl->id.name, "Effect Feedback Volume") == 0) { | |
851 | snd_printk(KERN_INFO | |
852 | "usb-audio: set quirks for FTU Effect Feedback/Volume\n"); | |
853 | cval->min = 0x00; | |
854 | cval->max = 0x7f; | |
855 | break; | |
856 | } | |
857 | break; | |
858 | ||
dcaaf9f2 TI |
859 | case USB_ID(0x0471, 0x0101): |
860 | case USB_ID(0x0471, 0x0104): | |
861 | case USB_ID(0x0471, 0x0105): | |
862 | case USB_ID(0x0672, 0x1041): | |
863 | /* quirk for UDA1321/N101. | |
864 | * note that detection between firmware 2.1.1.7 (N101) | |
865 | * and later 2.1.1.21 is not very clear from datasheets. | |
866 | * I hope that the min value is -15360 for newer firmware --jk | |
867 | */ | |
868 | if (!strcmp(kctl->id.name, "PCM Playback Volume") && | |
869 | cval->min == -15616) { | |
870 | snd_printk(KERN_INFO | |
871 | "set volume quirk for UDA1321/N101 chip\n"); | |
872 | cval->max = -256; | |
873 | } | |
874 | break; | |
875 | ||
876 | case USB_ID(0x046d, 0x09a4): | |
877 | if (!strcmp(kctl->id.name, "Mic Capture Volume")) { | |
878 | snd_printk(KERN_INFO | |
879 | "set volume quirk for QuickCam E3500\n"); | |
880 | cval->min = 6080; | |
881 | cval->max = 8768; | |
882 | cval->res = 192; | |
883 | } | |
884 | break; | |
885 | ||
d4fa4f9c | 886 | case USB_ID(0x046d, 0x0807): /* Logitech Webcam C500 */ |
dcaaf9f2 TI |
887 | case USB_ID(0x046d, 0x0808): |
888 | case USB_ID(0x046d, 0x0809): | |
36691e1b | 889 | case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */ |
55c0008b | 890 | case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */ |
11e7064f | 891 | case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */ |
5c75cd55 | 892 | case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */ |
dcaaf9f2 TI |
893 | case USB_ID(0x046d, 0x0991): |
894 | /* Most audio usb devices lie about volume resolution. | |
895 | * Most Logitech webcams have res = 384. | |
896 | * Proboly there is some logitech magic behind this number --fishor | |
897 | */ | |
898 | if (!strcmp(kctl->id.name, "Mic Capture Volume")) { | |
899 | snd_printk(KERN_INFO | |
900 | "set resolution quirk: cval->res = 384\n"); | |
901 | cval->res = 384; | |
902 | } | |
903 | break; | |
904 | ||
905 | } | |
906 | } | |
907 | ||
1da177e4 LT |
908 | /* |
909 | * retrieve the minimum and maximum values for the specified control | |
910 | */ | |
dcaaf9f2 TI |
911 | static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval, |
912 | int default_min, struct snd_kcontrol *kctl) | |
1da177e4 LT |
913 | { |
914 | /* for failsafe */ | |
915 | cval->min = default_min; | |
916 | cval->max = cval->min + 1; | |
917 | cval->res = 1; | |
c3a3e040 | 918 | cval->dBmin = cval->dBmax = 0; |
1da177e4 LT |
919 | |
920 | if (cval->val_type == USB_MIXER_BOOLEAN || | |
921 | cval->val_type == USB_MIXER_INV_BOOLEAN) { | |
922 | cval->initialized = 1; | |
923 | } else { | |
924 | int minchn = 0; | |
925 | if (cval->cmask) { | |
926 | int i; | |
927 | for (i = 0; i < MAX_CHANNELS; i++) | |
928 | if (cval->cmask & (1 << i)) { | |
929 | minchn = i + 1; | |
930 | break; | |
931 | } | |
932 | } | |
de48c7bc DM |
933 | if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 || |
934 | get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) { | |
84957a8a | 935 | snd_printd(KERN_ERR "%d:%d: cannot get min/max values for control %d (id %d)\n", |
1a4e34e6 | 936 | cval->id, snd_usb_ctrl_intf(cval->mixer->chip), cval->control, cval->id); |
1da177e4 LT |
937 | return -EINVAL; |
938 | } | |
de48c7bc | 939 | if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) { |
1da177e4 LT |
940 | cval->res = 1; |
941 | } else { | |
942 | int last_valid_res = cval->res; | |
943 | ||
944 | while (cval->res > 1) { | |
7b1eda22 DM |
945 | if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES, |
946 | (cval->control << 8) | minchn, cval->res / 2) < 0) | |
1da177e4 LT |
947 | break; |
948 | cval->res /= 2; | |
949 | } | |
de48c7bc | 950 | if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) |
1da177e4 LT |
951 | cval->res = last_valid_res; |
952 | } | |
953 | if (cval->res == 0) | |
954 | cval->res = 1; | |
14790f1c TI |
955 | |
956 | /* Additional checks for the proper resolution | |
957 | * | |
958 | * Some devices report smaller resolutions than actually | |
959 | * reacting. They don't return errors but simply clip | |
960 | * to the lower aligned value. | |
961 | */ | |
962 | if (cval->min + cval->res < cval->max) { | |
963 | int last_valid_res = cval->res; | |
964 | int saved, test, check; | |
641b4879 | 965 | get_cur_mix_raw(cval, minchn, &saved); |
14790f1c TI |
966 | for (;;) { |
967 | test = saved; | |
968 | if (test < cval->max) | |
969 | test += cval->res; | |
970 | else | |
971 | test -= cval->res; | |
972 | if (test < cval->min || test > cval->max || | |
641b4879 TI |
973 | set_cur_mix_value(cval, minchn, 0, test) || |
974 | get_cur_mix_raw(cval, minchn, &check)) { | |
14790f1c TI |
975 | cval->res = last_valid_res; |
976 | break; | |
977 | } | |
978 | if (test == check) | |
979 | break; | |
980 | cval->res *= 2; | |
981 | } | |
641b4879 | 982 | set_cur_mix_value(cval, minchn, 0, saved); |
14790f1c TI |
983 | } |
984 | ||
1da177e4 LT |
985 | cval->initialized = 1; |
986 | } | |
c3a3e040 | 987 | |
dcaaf9f2 TI |
988 | if (kctl) |
989 | volume_control_quirks(cval, kctl); | |
990 | ||
c3a3e040 JK |
991 | /* USB descriptions contain the dB scale in 1/256 dB unit |
992 | * while ALSA TLV contains in 1/100 dB unit | |
993 | */ | |
994 | cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256; | |
995 | cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256; | |
996 | if (cval->dBmin > cval->dBmax) { | |
997 | /* something is wrong; assume it's either from/to 0dB */ | |
998 | if (cval->dBmin < 0) | |
999 | cval->dBmax = 0; | |
1000 | else if (cval->dBmin > 0) | |
1001 | cval->dBmin = 0; | |
1002 | if (cval->dBmin > cval->dBmax) { | |
1003 | /* totally crap, return an error */ | |
1004 | return -EINVAL; | |
1005 | } | |
1006 | } | |
1007 | ||
1da177e4 LT |
1008 | return 0; |
1009 | } | |
1010 | ||
dcaaf9f2 | 1011 | #define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL) |
1da177e4 LT |
1012 | |
1013 | /* get a feature/mixer unit info */ | |
86e07d34 | 1014 | static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) |
1da177e4 | 1015 | { |
86e07d34 | 1016 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1da177e4 LT |
1017 | |
1018 | if (cval->val_type == USB_MIXER_BOOLEAN || | |
1019 | cval->val_type == USB_MIXER_INV_BOOLEAN) | |
1020 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1021 | else | |
1022 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1023 | uinfo->count = cval->channels; | |
1024 | if (cval->val_type == USB_MIXER_BOOLEAN || | |
1025 | cval->val_type == USB_MIXER_INV_BOOLEAN) { | |
1026 | uinfo->value.integer.min = 0; | |
1027 | uinfo->value.integer.max = 1; | |
1028 | } else { | |
9fcd0ab1 | 1029 | if (!cval->initialized) { |
dcaaf9f2 | 1030 | get_min_max_with_quirks(cval, 0, kcontrol); |
9fcd0ab1 TI |
1031 | if (cval->initialized && cval->dBmin >= cval->dBmax) { |
1032 | kcontrol->vd[0].access &= | |
1033 | ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ | | |
1034 | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK); | |
1035 | snd_ctl_notify(cval->mixer->chip->card, | |
1036 | SNDRV_CTL_EVENT_MASK_INFO, | |
1037 | &kcontrol->id); | |
1038 | } | |
1039 | } | |
1da177e4 | 1040 | uinfo->value.integer.min = 0; |
14790f1c TI |
1041 | uinfo->value.integer.max = |
1042 | (cval->max - cval->min + cval->res - 1) / cval->res; | |
1da177e4 LT |
1043 | } |
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | /* get the current value from feature/mixer unit */ | |
86e07d34 | 1048 | static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 1049 | { |
86e07d34 | 1050 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1da177e4 LT |
1051 | int c, cnt, val, err; |
1052 | ||
641b4879 | 1053 | ucontrol->value.integer.value[0] = cval->min; |
1da177e4 LT |
1054 | if (cval->cmask) { |
1055 | cnt = 0; | |
1056 | for (c = 0; c < MAX_CHANNELS; c++) { | |
641b4879 TI |
1057 | if (!(cval->cmask & (1 << c))) |
1058 | continue; | |
1059 | err = get_cur_mix_value(cval, c + 1, cnt, &val); | |
1060 | if (err < 0) | |
1061 | return cval->mixer->ignore_ctl_error ? 0 : err; | |
1062 | val = get_relative_value(cval, val); | |
1063 | ucontrol->value.integer.value[cnt] = val; | |
1064 | cnt++; | |
1da177e4 | 1065 | } |
641b4879 | 1066 | return 0; |
1da177e4 LT |
1067 | } else { |
1068 | /* master channel */ | |
641b4879 TI |
1069 | err = get_cur_mix_value(cval, 0, 0, &val); |
1070 | if (err < 0) | |
1071 | return cval->mixer->ignore_ctl_error ? 0 : err; | |
1da177e4 LT |
1072 | val = get_relative_value(cval, val); |
1073 | ucontrol->value.integer.value[0] = val; | |
1074 | } | |
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | /* put the current value to feature/mixer unit */ | |
86e07d34 | 1079 | static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 1080 | { |
86e07d34 | 1081 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1da177e4 LT |
1082 | int c, cnt, val, oval, err; |
1083 | int changed = 0; | |
1084 | ||
1085 | if (cval->cmask) { | |
1086 | cnt = 0; | |
1087 | for (c = 0; c < MAX_CHANNELS; c++) { | |
641b4879 TI |
1088 | if (!(cval->cmask & (1 << c))) |
1089 | continue; | |
1090 | err = get_cur_mix_value(cval, c + 1, cnt, &oval); | |
1091 | if (err < 0) | |
1092 | return cval->mixer->ignore_ctl_error ? 0 : err; | |
1093 | val = ucontrol->value.integer.value[cnt]; | |
1094 | val = get_abs_value(cval, val); | |
1095 | if (oval != val) { | |
1096 | set_cur_mix_value(cval, c + 1, cnt, val); | |
1097 | changed = 1; | |
1da177e4 | 1098 | } |
641b4879 | 1099 | cnt++; |
1da177e4 LT |
1100 | } |
1101 | } else { | |
1102 | /* master channel */ | |
641b4879 | 1103 | err = get_cur_mix_value(cval, 0, 0, &oval); |
1da177e4 | 1104 | if (err < 0) |
641b4879 | 1105 | return cval->mixer->ignore_ctl_error ? 0 : err; |
1da177e4 LT |
1106 | val = ucontrol->value.integer.value[0]; |
1107 | val = get_abs_value(cval, val); | |
1108 | if (val != oval) { | |
641b4879 | 1109 | set_cur_mix_value(cval, 0, 0, val); |
1da177e4 LT |
1110 | changed = 1; |
1111 | } | |
1112 | } | |
1113 | return changed; | |
1114 | } | |
1115 | ||
86e07d34 | 1116 | static struct snd_kcontrol_new usb_feature_unit_ctl = { |
1da177e4 LT |
1117 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1118 | .name = "", /* will be filled later manually */ | |
1119 | .info = mixer_ctl_feature_info, | |
1120 | .get = mixer_ctl_feature_get, | |
1121 | .put = mixer_ctl_feature_put, | |
1122 | }; | |
1123 | ||
23caaf19 DM |
1124 | /* the read-only variant */ |
1125 | static struct snd_kcontrol_new usb_feature_unit_ctl_ro = { | |
1126 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
1127 | .name = "", /* will be filled later manually */ | |
1128 | .info = mixer_ctl_feature_info, | |
1129 | .get = mixer_ctl_feature_get, | |
1130 | .put = NULL, | |
1131 | }; | |
1132 | ||
9e38658f DM |
1133 | /* This symbol is exported in order to allow the mixer quirks to |
1134 | * hook up to the standard feature unit control mechanism */ | |
1135 | struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; | |
1da177e4 LT |
1136 | |
1137 | /* | |
1138 | * build a feature control | |
1139 | */ | |
1140 | ||
08d1e635 TI |
1141 | static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str) |
1142 | { | |
1143 | return strlcat(kctl->id.name, str, sizeof(kctl->id.name)); | |
1144 | } | |
1145 | ||
9b4ef977 DH |
1146 | /* A lot of headsets/headphones have a "Speaker" mixer. Make sure we |
1147 | rename it to "Headphone". We determine if something is a headphone | |
1148 | similar to how udev determines form factor. */ | |
1149 | static void check_no_speaker_on_headset(struct snd_kcontrol *kctl, | |
1150 | struct snd_card *card) | |
1151 | { | |
1152 | const char *names_to_check[] = { | |
1153 | "Headset", "headset", "Headphone", "headphone", NULL}; | |
1154 | const char **s; | |
1155 | bool found = 0; | |
1156 | ||
1157 | if (strcmp("Speaker", kctl->id.name)) | |
1158 | return; | |
1159 | ||
1160 | for (s = names_to_check; *s; s++) | |
1161 | if (strstr(card->shortname, *s)) { | |
1162 | found = 1; | |
1163 | break; | |
1164 | } | |
1165 | ||
1166 | if (!found) | |
1167 | return; | |
1168 | ||
1169 | strlcpy(kctl->id.name, "Headphone", sizeof(kctl->id.name)); | |
1170 | } | |
1171 | ||
99fc8645 | 1172 | static void build_feature_ctl(struct mixer_build *state, void *raw_desc, |
1da177e4 | 1173 | unsigned int ctl_mask, int control, |
23caaf19 | 1174 | struct usb_audio_term *iterm, int unitid, |
a6a33259 | 1175 | int readonly_mask) |
1da177e4 | 1176 | { |
99fc8645 | 1177 | struct uac_feature_unit_descriptor *desc = raw_desc; |
1da177e4 LT |
1178 | unsigned int len = 0; |
1179 | int mapped_name = 0; | |
99fc8645 | 1180 | int nameid = uac_feature_unit_iFeature(desc); |
86e07d34 TI |
1181 | struct snd_kcontrol *kctl; |
1182 | struct usb_mixer_elem_info *cval; | |
c3a3e040 | 1183 | const struct usbmix_name_map *map; |
80acefff | 1184 | unsigned int range; |
1da177e4 LT |
1185 | |
1186 | control++; /* change from zero-based to 1-based value */ | |
1187 | ||
65f25da4 | 1188 | if (control == UAC_FU_GRAPHIC_EQUALIZER) { |
1da177e4 LT |
1189 | /* FIXME: not supported yet */ |
1190 | return; | |
1191 | } | |
1192 | ||
c3a3e040 JK |
1193 | map = find_map(state, unitid, control); |
1194 | if (check_ignored_ctl(map)) | |
1da177e4 LT |
1195 | return; |
1196 | ||
561b220a | 1197 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
1da177e4 LT |
1198 | if (! cval) { |
1199 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); | |
1200 | return; | |
1201 | } | |
84957a8a | 1202 | cval->mixer = state->mixer; |
1da177e4 LT |
1203 | cval->id = unitid; |
1204 | cval->control = control; | |
1205 | cval->cmask = ctl_mask; | |
1206 | cval->val_type = audio_feature_info[control-1].type; | |
a6a33259 | 1207 | if (ctl_mask == 0) { |
1da177e4 | 1208 | cval->channels = 1; /* master channel */ |
a6a33259 DM |
1209 | cval->master_readonly = readonly_mask; |
1210 | } else { | |
1da177e4 LT |
1211 | int i, c = 0; |
1212 | for (i = 0; i < 16; i++) | |
1213 | if (ctl_mask & (1 << i)) | |
1214 | c++; | |
1215 | cval->channels = c; | |
a6a33259 | 1216 | cval->ch_readonly = readonly_mask; |
1da177e4 LT |
1217 | } |
1218 | ||
a6a33259 DM |
1219 | /* if all channels in the mask are marked read-only, make the control |
1220 | * read-only. set_cur_mix_value() will check the mask again and won't | |
1221 | * issue write commands to read-only channels. */ | |
1222 | if (cval->channels == readonly_mask) | |
23caaf19 DM |
1223 | kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval); |
1224 | else | |
1225 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); | |
1226 | ||
1da177e4 LT |
1227 | if (! kctl) { |
1228 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); | |
1229 | kfree(cval); | |
1230 | return; | |
1231 | } | |
1232 | kctl->private_free = usb_mixer_elem_free; | |
1233 | ||
c3a3e040 | 1234 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
1da177e4 LT |
1235 | mapped_name = len != 0; |
1236 | if (! len && nameid) | |
c3a3e040 JK |
1237 | len = snd_usb_copy_string_desc(state, nameid, |
1238 | kctl->id.name, sizeof(kctl->id.name)); | |
1da177e4 LT |
1239 | |
1240 | switch (control) { | |
65f25da4 DM |
1241 | case UAC_FU_MUTE: |
1242 | case UAC_FU_VOLUME: | |
1da177e4 LT |
1243 | /* determine the control name. the rule is: |
1244 | * - if a name id is given in descriptor, use it. | |
1245 | * - if the connected input can be determined, then use the name | |
1246 | * of terminal type. | |
1247 | * - if the connected output can be determined, use it. | |
1248 | * - otherwise, anonymous name. | |
1249 | */ | |
1250 | if (! len) { | |
1251 | len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1); | |
1252 | if (! len) | |
1253 | len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1); | |
1254 | if (! len) | |
1255 | len = snprintf(kctl->id.name, sizeof(kctl->id.name), | |
1256 | "Feature %d", unitid); | |
1257 | } | |
9b4ef977 DH |
1258 | |
1259 | if (!mapped_name) | |
1260 | check_no_speaker_on_headset(kctl, state->mixer->chip->card); | |
1261 | ||
1da177e4 LT |
1262 | /* determine the stream direction: |
1263 | * if the connected output is USB stream, then it's likely a | |
1264 | * capture stream. otherwise it should be playback (hopefully :) | |
1265 | */ | |
1266 | if (! mapped_name && ! (state->oterm.type >> 16)) { | |
1267 | if ((state->oterm.type & 0xff00) == 0x0100) { | |
08d1e635 | 1268 | len = append_ctl_name(kctl, " Capture"); |
1da177e4 | 1269 | } else { |
08d1e635 | 1270 | len = append_ctl_name(kctl, " Playback"); |
1da177e4 LT |
1271 | } |
1272 | } | |
65f25da4 | 1273 | append_ctl_name(kctl, control == UAC_FU_MUTE ? |
08d1e635 | 1274 | " Switch" : " Volume"); |
1da177e4 | 1275 | break; |
1da177e4 LT |
1276 | default: |
1277 | if (! len) | |
1278 | strlcpy(kctl->id.name, audio_feature_info[control-1].name, | |
1279 | sizeof(kctl->id.name)); | |
1280 | break; | |
1281 | } | |
1282 | ||
e182534d TI |
1283 | /* get min/max values */ |
1284 | get_min_max_with_quirks(cval, 0, kctl); | |
1285 | ||
1286 | if (control == UAC_FU_VOLUME) { | |
1287 | check_mapped_dB(map, cval); | |
1288 | if (cval->dBmin < cval->dBmax || !cval->initialized) { | |
1289 | kctl->tlv.c = snd_usb_mixer_vol_tlv; | |
1290 | kctl->vd[0].access |= | |
1291 | SNDRV_CTL_ELEM_ACCESS_TLV_READ | | |
1292 | SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK; | |
1293 | } | |
1294 | } | |
1295 | ||
80acefff AF |
1296 | range = (cval->max - cval->min) / cval->res; |
1297 | /* Are there devices with volume range more than 255? I use a bit more | |
1298 | * to be sure. 384 is a resolution magic number found on Logitech | |
1299 | * devices. It will definitively catch all buggy Logitech devices. | |
1300 | */ | |
1301 | if (range > 384) { | |
1302 | snd_printk(KERN_WARNING "usb_audio: Warning! Unlikely big " | |
1303 | "volume range (=%u), cval->res is probably wrong.", | |
1304 | range); | |
1305 | snd_printk(KERN_WARNING "usb_audio: [%d] FU [%s] ch = %d, " | |
1306 | "val = %d/%d/%d", cval->id, | |
1307 | kctl->id.name, cval->channels, | |
1308 | cval->min, cval->max, cval->res); | |
1309 | } | |
1310 | ||
1da177e4 LT |
1311 | snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", |
1312 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res); | |
ef9d5970 | 1313 | snd_usb_mixer_add_control(state->mixer, kctl); |
1da177e4 LT |
1314 | } |
1315 | ||
1316 | ||
1317 | ||
1318 | /* | |
1319 | * parse a feature unit | |
1320 | * | |
25985edc | 1321 | * most of controls are defined here. |
1da177e4 | 1322 | */ |
28e1b773 | 1323 | static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void *_ftr) |
1da177e4 LT |
1324 | { |
1325 | int channels, i, j; | |
86e07d34 | 1326 | struct usb_audio_term iterm; |
1da177e4 LT |
1327 | unsigned int master_bits, first_ch_bits; |
1328 | int err, csize; | |
23caaf19 DM |
1329 | struct uac_feature_unit_descriptor *hdr = _ftr; |
1330 | __u8 *bmaControls; | |
1331 | ||
1332 | if (state->mixer->protocol == UAC_VERSION_1) { | |
1333 | csize = hdr->bControlSize; | |
60c961a9 NK |
1334 | if (!csize) { |
1335 | snd_printdd(KERN_ERR "usbaudio: unit %u: " | |
1336 | "invalid bControlSize == 0\n", unitid); | |
1337 | return -EINVAL; | |
1338 | } | |
23caaf19 DM |
1339 | channels = (hdr->bLength - 7) / csize - 1; |
1340 | bmaControls = hdr->bmaControls; | |
d56268fb CL |
1341 | if (hdr->bLength < 7 + csize) { |
1342 | snd_printk(KERN_ERR "usbaudio: unit %u: " | |
1343 | "invalid UAC_FEATURE_UNIT descriptor\n", | |
1344 | unitid); | |
1345 | return -EINVAL; | |
1346 | } | |
23caaf19 DM |
1347 | } else { |
1348 | struct uac2_feature_unit_descriptor *ftr = _ftr; | |
1349 | csize = 4; | |
e8d0fee7 | 1350 | channels = (hdr->bLength - 6) / 4 - 1; |
23caaf19 | 1351 | bmaControls = ftr->bmaControls; |
d56268fb CL |
1352 | if (hdr->bLength < 6 + csize) { |
1353 | snd_printk(KERN_ERR "usbaudio: unit %u: " | |
1354 | "invalid UAC_FEATURE_UNIT descriptor\n", | |
1355 | unitid); | |
1356 | return -EINVAL; | |
1357 | } | |
1da177e4 LT |
1358 | } |
1359 | ||
1360 | /* parse the source unit */ | |
23caaf19 | 1361 | if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0) |
1da177e4 LT |
1362 | return err; |
1363 | ||
1364 | /* determine the input source type and name */ | |
4d7b86c9 DM |
1365 | err = check_input_term(state, hdr->bSourceID, &iterm); |
1366 | if (err < 0) | |
1367 | return err; | |
1da177e4 | 1368 | |
23caaf19 | 1369 | master_bits = snd_usb_combine_bytes(bmaControls, csize); |
0c3cee57 JK |
1370 | /* master configuration quirks */ |
1371 | switch (state->chip->usb_id) { | |
1372 | case USB_ID(0x08bb, 0x2702): | |
1373 | snd_printk(KERN_INFO | |
1374 | "usbmixer: master volume quirk for PCM2702 chip\n"); | |
1375 | /* disable non-functional volume control */ | |
65f25da4 | 1376 | master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); |
0c3cee57 | 1377 | break; |
c1051439 DH |
1378 | case USB_ID(0x1130, 0xf211): |
1379 | snd_printk(KERN_INFO | |
1380 | "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n"); | |
1381 | /* disable non-functional volume control */ | |
1382 | channels = 0; | |
1383 | break; | |
1384 | ||
0c3cee57 | 1385 | } |
1da177e4 | 1386 | if (channels > 0) |
23caaf19 | 1387 | first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize); |
1da177e4 LT |
1388 | else |
1389 | first_ch_bits = 0; | |
23caaf19 DM |
1390 | |
1391 | if (state->mixer->protocol == UAC_VERSION_1) { | |
1392 | /* check all control types */ | |
1393 | for (i = 0; i < 10; i++) { | |
1394 | unsigned int ch_bits = 0; | |
1395 | for (j = 0; j < channels; j++) { | |
1396 | unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize); | |
1397 | if (mask & (1 << i)) | |
1398 | ch_bits |= (1 << j); | |
1399 | } | |
1400 | /* audio class v1 controls are never read-only */ | |
1401 | if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ | |
1402 | build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, 0); | |
1403 | if (master_bits & (1 << i)) | |
1404 | build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 0); | |
1405 | } | |
1406 | } else { /* UAC_VERSION_2 */ | |
d09c06c6 | 1407 | for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) { |
23caaf19 DM |
1408 | unsigned int ch_bits = 0; |
1409 | unsigned int ch_read_only = 0; | |
1410 | ||
1411 | for (j = 0; j < channels; j++) { | |
1412 | unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize); | |
dcbe7bcf | 1413 | if (uac2_control_is_readable(mask, i)) { |
23caaf19 | 1414 | ch_bits |= (1 << j); |
dcbe7bcf | 1415 | if (!uac2_control_is_writeable(mask, i)) |
23caaf19 DM |
1416 | ch_read_only |= (1 << j); |
1417 | } | |
1418 | } | |
1419 | ||
a6a33259 DM |
1420 | /* NOTE: build_feature_ctl() will mark the control read-only if all channels |
1421 | * are marked read-only in the descriptors. Otherwise, the control will be | |
1422 | * reported as writeable, but the driver will not actually issue a write | |
1423 | * command for read-only channels */ | |
23caaf19 | 1424 | if (ch_bits & 1) /* the first channel must be set (for ease of programming) */ |
a6a33259 | 1425 | build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, ch_read_only); |
dcbe7bcf | 1426 | if (uac2_control_is_readable(master_bits, i)) |
23caaf19 | 1427 | build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, |
dcbe7bcf | 1428 | !uac2_control_is_writeable(master_bits, i)); |
1da177e4 | 1429 | } |
1da177e4 LT |
1430 | } |
1431 | ||
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | ||
1436 | /* | |
1437 | * Mixer Unit | |
1438 | */ | |
1439 | ||
1440 | /* | |
1441 | * build a mixer unit control | |
1442 | * | |
1443 | * the callbacks are identical with feature unit. | |
1444 | * input channel number (zero based) is given in control field instead. | |
1445 | */ | |
1446 | ||
99fc8645 DM |
1447 | static void build_mixer_unit_ctl(struct mixer_build *state, |
1448 | struct uac_mixer_unit_descriptor *desc, | |
1da177e4 | 1449 | int in_pin, int in_ch, int unitid, |
86e07d34 | 1450 | struct usb_audio_term *iterm) |
1da177e4 | 1451 | { |
86e07d34 | 1452 | struct usb_mixer_elem_info *cval; |
99fc8645 | 1453 | unsigned int num_outs = uac_mixer_unit_bNrChannels(desc); |
1da177e4 | 1454 | unsigned int i, len; |
86e07d34 | 1455 | struct snd_kcontrol *kctl; |
c3a3e040 | 1456 | const struct usbmix_name_map *map; |
1da177e4 | 1457 | |
c3a3e040 JK |
1458 | map = find_map(state, unitid, 0); |
1459 | if (check_ignored_ctl(map)) | |
1da177e4 LT |
1460 | return; |
1461 | ||
561b220a | 1462 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
1da177e4 LT |
1463 | if (! cval) |
1464 | return; | |
1465 | ||
84957a8a | 1466 | cval->mixer = state->mixer; |
1da177e4 LT |
1467 | cval->id = unitid; |
1468 | cval->control = in_ch + 1; /* based on 1 */ | |
1469 | cval->val_type = USB_MIXER_S16; | |
1470 | for (i = 0; i < num_outs; i++) { | |
23caaf19 | 1471 | if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), in_ch, i, num_outs)) { |
1da177e4 LT |
1472 | cval->cmask |= (1 << i); |
1473 | cval->channels++; | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | /* get min/max values */ | |
1478 | get_min_max(cval, 0); | |
1479 | ||
1480 | kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval); | |
1481 | if (! kctl) { | |
1482 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); | |
1483 | kfree(cval); | |
1484 | return; | |
1485 | } | |
1486 | kctl->private_free = usb_mixer_elem_free; | |
1487 | ||
c3a3e040 | 1488 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
1da177e4 LT |
1489 | if (! len) |
1490 | len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0); | |
1491 | if (! len) | |
1492 | len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1); | |
08d1e635 | 1493 | append_ctl_name(kctl, " Volume"); |
1da177e4 LT |
1494 | |
1495 | snd_printdd(KERN_INFO "[%d] MU [%s] ch = %d, val = %d/%d\n", | |
1496 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max); | |
ef9d5970 | 1497 | snd_usb_mixer_add_control(state->mixer, kctl); |
1da177e4 LT |
1498 | } |
1499 | ||
1500 | ||
1501 | /* | |
1502 | * parse a mixer unit | |
1503 | */ | |
99fc8645 | 1504 | static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *raw_desc) |
1da177e4 | 1505 | { |
99fc8645 | 1506 | struct uac_mixer_unit_descriptor *desc = raw_desc; |
86e07d34 | 1507 | struct usb_audio_term iterm; |
1da177e4 LT |
1508 | int input_pins, num_ins, num_outs; |
1509 | int pin, ich, err; | |
1510 | ||
99fc8645 | 1511 | if (desc->bLength < 11 || ! (input_pins = desc->bNrInPins) || ! (num_outs = uac_mixer_unit_bNrChannels(desc))) { |
1da177e4 LT |
1512 | snd_printk(KERN_ERR "invalid MIXER UNIT descriptor %d\n", unitid); |
1513 | return -EINVAL; | |
1514 | } | |
1515 | /* no bmControls field (e.g. Maya44) -> ignore */ | |
99fc8645 | 1516 | if (desc->bLength <= 10 + input_pins) { |
1da177e4 LT |
1517 | snd_printdd(KERN_INFO "MU %d has no bmControls field\n", unitid); |
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | num_ins = 0; | |
1522 | ich = 0; | |
1523 | for (pin = 0; pin < input_pins; pin++) { | |
99fc8645 | 1524 | err = parse_audio_unit(state, desc->baSourceID[pin]); |
1da177e4 | 1525 | if (err < 0) |
284a8dd6 | 1526 | continue; |
99fc8645 | 1527 | err = check_input_term(state, desc->baSourceID[pin], &iterm); |
1da177e4 LT |
1528 | if (err < 0) |
1529 | return err; | |
1530 | num_ins += iterm.channels; | |
1531 | for (; ich < num_ins; ++ich) { | |
1532 | int och, ich_has_controls = 0; | |
1533 | ||
1534 | for (och = 0; och < num_outs; ++och) { | |
23caaf19 | 1535 | if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), |
1da177e4 LT |
1536 | ich, och, num_outs)) { |
1537 | ich_has_controls = 1; | |
1538 | break; | |
1539 | } | |
1540 | } | |
1541 | if (ich_has_controls) | |
1542 | build_mixer_unit_ctl(state, desc, pin, ich, | |
1543 | unitid, &iterm); | |
1544 | } | |
1545 | } | |
1546 | return 0; | |
1547 | } | |
1548 | ||
1549 | ||
1550 | /* | |
1551 | * Processing Unit / Extension Unit | |
1552 | */ | |
1553 | ||
1554 | /* get callback for processing/extension unit */ | |
86e07d34 | 1555 | static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 1556 | { |
86e07d34 | 1557 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1da177e4 LT |
1558 | int err, val; |
1559 | ||
1560 | err = get_cur_ctl_value(cval, cval->control << 8, &val); | |
84957a8a | 1561 | if (err < 0 && cval->mixer->ignore_ctl_error) { |
1da177e4 LT |
1562 | ucontrol->value.integer.value[0] = cval->min; |
1563 | return 0; | |
1564 | } | |
1565 | if (err < 0) | |
1566 | return err; | |
1567 | val = get_relative_value(cval, val); | |
1568 | ucontrol->value.integer.value[0] = val; | |
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | /* put callback for processing/extension unit */ | |
86e07d34 | 1573 | static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 1574 | { |
86e07d34 | 1575 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1da177e4 LT |
1576 | int val, oval, err; |
1577 | ||
1578 | err = get_cur_ctl_value(cval, cval->control << 8, &oval); | |
1579 | if (err < 0) { | |
84957a8a | 1580 | if (cval->mixer->ignore_ctl_error) |
1da177e4 LT |
1581 | return 0; |
1582 | return err; | |
1583 | } | |
1584 | val = ucontrol->value.integer.value[0]; | |
1585 | val = get_abs_value(cval, val); | |
1586 | if (val != oval) { | |
1587 | set_cur_ctl_value(cval, cval->control << 8, val); | |
1588 | return 1; | |
1589 | } | |
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | /* alsa control interface for processing/extension unit */ | |
86e07d34 | 1594 | static struct snd_kcontrol_new mixer_procunit_ctl = { |
1da177e4 LT |
1595 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1596 | .name = "", /* will be filled later */ | |
1597 | .info = mixer_ctl_feature_info, | |
1598 | .get = mixer_ctl_procunit_get, | |
1599 | .put = mixer_ctl_procunit_put, | |
1600 | }; | |
1601 | ||
1602 | ||
1603 | /* | |
1604 | * predefined data for processing units | |
1605 | */ | |
1606 | struct procunit_value_info { | |
1607 | int control; | |
1608 | char *suffix; | |
1609 | int val_type; | |
1610 | int min_value; | |
1611 | }; | |
1612 | ||
1613 | struct procunit_info { | |
1614 | int type; | |
1615 | char *name; | |
1616 | struct procunit_value_info *values; | |
1617 | }; | |
1618 | ||
1619 | static struct procunit_value_info updown_proc_info[] = { | |
65f25da4 DM |
1620 | { UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1621 | { UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, | |
1da177e4 LT |
1622 | { 0 } |
1623 | }; | |
1624 | static struct procunit_value_info prologic_proc_info[] = { | |
65f25da4 DM |
1625 | { UAC_DP_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1626 | { UAC_DP_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 }, | |
1da177e4 LT |
1627 | { 0 } |
1628 | }; | |
1629 | static struct procunit_value_info threed_enh_proc_info[] = { | |
65f25da4 DM |
1630 | { UAC_3D_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1631 | { UAC_3D_SPACE, "Spaciousness", USB_MIXER_U8 }, | |
1da177e4 LT |
1632 | { 0 } |
1633 | }; | |
1634 | static struct procunit_value_info reverb_proc_info[] = { | |
65f25da4 DM |
1635 | { UAC_REVERB_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1636 | { UAC_REVERB_LEVEL, "Level", USB_MIXER_U8 }, | |
1637 | { UAC_REVERB_TIME, "Time", USB_MIXER_U16 }, | |
1638 | { UAC_REVERB_FEEDBACK, "Feedback", USB_MIXER_U8 }, | |
1da177e4 LT |
1639 | { 0 } |
1640 | }; | |
1641 | static struct procunit_value_info chorus_proc_info[] = { | |
65f25da4 DM |
1642 | { UAC_CHORUS_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1643 | { UAC_CHORUS_LEVEL, "Level", USB_MIXER_U8 }, | |
1644 | { UAC_CHORUS_RATE, "Rate", USB_MIXER_U16 }, | |
1645 | { UAC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 }, | |
1da177e4 LT |
1646 | { 0 } |
1647 | }; | |
1648 | static struct procunit_value_info dcr_proc_info[] = { | |
65f25da4 DM |
1649 | { UAC_DCR_ENABLE, "Switch", USB_MIXER_BOOLEAN }, |
1650 | { UAC_DCR_RATE, "Ratio", USB_MIXER_U16 }, | |
1651 | { UAC_DCR_MAXAMPL, "Max Amp", USB_MIXER_S16 }, | |
1652 | { UAC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 }, | |
1653 | { UAC_DCR_ATTACK_TIME, "Attack Time", USB_MIXER_U16 }, | |
1654 | { UAC_DCR_RELEASE_TIME, "Release Time", USB_MIXER_U16 }, | |
1da177e4 LT |
1655 | { 0 } |
1656 | }; | |
1657 | ||
1658 | static struct procunit_info procunits[] = { | |
65f25da4 DM |
1659 | { UAC_PROCESS_UP_DOWNMIX, "Up Down", updown_proc_info }, |
1660 | { UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic", prologic_proc_info }, | |
1661 | { UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", threed_enh_proc_info }, | |
1662 | { UAC_PROCESS_REVERB, "Reverb", reverb_proc_info }, | |
1663 | { UAC_PROCESS_CHORUS, "Chorus", chorus_proc_info }, | |
1664 | { UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info }, | |
1da177e4 LT |
1665 | { 0 }, |
1666 | }; | |
7d2b451e SK |
1667 | /* |
1668 | * predefined data for extension units | |
1669 | */ | |
1670 | static struct procunit_value_info clock_rate_xu_info[] = { | |
e213e9cf DM |
1671 | { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 }, |
1672 | { 0 } | |
7d2b451e SK |
1673 | }; |
1674 | static struct procunit_value_info clock_source_xu_info[] = { | |
1675 | { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN }, | |
1676 | { 0 } | |
1677 | }; | |
1678 | static struct procunit_value_info spdif_format_xu_info[] = { | |
1679 | { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN }, | |
1680 | { 0 } | |
1681 | }; | |
1682 | static struct procunit_value_info soft_limit_xu_info[] = { | |
1683 | { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN }, | |
1684 | { 0 } | |
1685 | }; | |
1686 | static struct procunit_info extunits[] = { | |
1687 | { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info }, | |
1688 | { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info }, | |
1689 | { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info }, | |
1690 | { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info }, | |
1691 | { 0 } | |
1692 | }; | |
1da177e4 LT |
1693 | /* |
1694 | * build a processing/extension unit | |
1695 | */ | |
99fc8645 | 1696 | static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw_desc, struct procunit_info *list, char *name) |
1da177e4 | 1697 | { |
99fc8645 DM |
1698 | struct uac_processing_unit_descriptor *desc = raw_desc; |
1699 | int num_ins = desc->bNrInPins; | |
86e07d34 TI |
1700 | struct usb_mixer_elem_info *cval; |
1701 | struct snd_kcontrol *kctl; | |
1da177e4 LT |
1702 | int i, err, nameid, type, len; |
1703 | struct procunit_info *info; | |
1704 | struct procunit_value_info *valinfo; | |
c3a3e040 | 1705 | const struct usbmix_name_map *map; |
1da177e4 LT |
1706 | static struct procunit_value_info default_value_info[] = { |
1707 | { 0x01, "Switch", USB_MIXER_BOOLEAN }, | |
1708 | { 0 } | |
1709 | }; | |
1710 | static struct procunit_info default_info = { | |
1711 | 0, NULL, default_value_info | |
1712 | }; | |
1713 | ||
23caaf19 DM |
1714 | if (desc->bLength < 13 || desc->bLength < 13 + num_ins || |
1715 | desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) { | |
1da177e4 LT |
1716 | snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid); |
1717 | return -EINVAL; | |
1718 | } | |
1719 | ||
1720 | for (i = 0; i < num_ins; i++) { | |
99fc8645 | 1721 | if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) |
1da177e4 LT |
1722 | return err; |
1723 | } | |
1724 | ||
99fc8645 | 1725 | type = le16_to_cpu(desc->wProcessType); |
1da177e4 LT |
1726 | for (info = list; info && info->type; info++) |
1727 | if (info->type == type) | |
1728 | break; | |
1729 | if (! info || ! info->type) | |
1730 | info = &default_info; | |
1731 | ||
1732 | for (valinfo = info->values; valinfo->control; valinfo++) { | |
23caaf19 | 1733 | __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol); |
99fc8645 DM |
1734 | |
1735 | if (! (controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1)))) | |
1da177e4 | 1736 | continue; |
c3a3e040 JK |
1737 | map = find_map(state, unitid, valinfo->control); |
1738 | if (check_ignored_ctl(map)) | |
1da177e4 | 1739 | continue; |
561b220a | 1740 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
1da177e4 LT |
1741 | if (! cval) { |
1742 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); | |
1743 | return -ENOMEM; | |
1744 | } | |
84957a8a | 1745 | cval->mixer = state->mixer; |
1da177e4 LT |
1746 | cval->id = unitid; |
1747 | cval->control = valinfo->control; | |
1748 | cval->val_type = valinfo->val_type; | |
1749 | cval->channels = 1; | |
1750 | ||
1751 | /* get min/max values */ | |
65f25da4 | 1752 | if (type == UAC_PROCESS_UP_DOWNMIX && cval->control == UAC_UD_MODE_SELECT) { |
23caaf19 | 1753 | __u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol); |
1da177e4 LT |
1754 | /* FIXME: hard-coded */ |
1755 | cval->min = 1; | |
99fc8645 | 1756 | cval->max = control_spec[0]; |
1da177e4 LT |
1757 | cval->res = 1; |
1758 | cval->initialized = 1; | |
7d2b451e SK |
1759 | } else { |
1760 | if (type == USB_XU_CLOCK_RATE) { | |
1cdfa9f3 | 1761 | /* E-Mu USB 0404/0202/TrackerPre/0204 |
7d2b451e SK |
1762 | * samplerate control quirk |
1763 | */ | |
1764 | cval->min = 0; | |
1765 | cval->max = 5; | |
1766 | cval->res = 1; | |
1767 | cval->initialized = 1; | |
1768 | } else | |
1769 | get_min_max(cval, valinfo->min_value); | |
1770 | } | |
1da177e4 LT |
1771 | |
1772 | kctl = snd_ctl_new1(&mixer_procunit_ctl, cval); | |
1773 | if (! kctl) { | |
1774 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); | |
1775 | kfree(cval); | |
1776 | return -ENOMEM; | |
1777 | } | |
1778 | kctl->private_free = usb_mixer_elem_free; | |
1779 | ||
c3a3e040 JK |
1780 | if (check_mapped_name(map, kctl->id.name, |
1781 | sizeof(kctl->id.name))) | |
1782 | /* nothing */ ; | |
1da177e4 LT |
1783 | else if (info->name) |
1784 | strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name)); | |
1785 | else { | |
23caaf19 | 1786 | nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol); |
1da177e4 LT |
1787 | len = 0; |
1788 | if (nameid) | |
1789 | len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); | |
1790 | if (! len) | |
1791 | strlcpy(kctl->id.name, name, sizeof(kctl->id.name)); | |
1792 | } | |
08d1e635 TI |
1793 | append_ctl_name(kctl, " "); |
1794 | append_ctl_name(kctl, valinfo->suffix); | |
1da177e4 LT |
1795 | |
1796 | snd_printdd(KERN_INFO "[%d] PU [%s] ch = %d, val = %d/%d\n", | |
1797 | cval->id, kctl->id.name, cval->channels, cval->min, cval->max); | |
ef9d5970 | 1798 | if ((err = snd_usb_mixer_add_control(state->mixer, kctl)) < 0) |
1da177e4 LT |
1799 | return err; |
1800 | } | |
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | ||
99fc8645 | 1805 | static int parse_audio_processing_unit(struct mixer_build *state, int unitid, void *raw_desc) |
1da177e4 | 1806 | { |
99fc8645 | 1807 | return build_audio_procunit(state, unitid, raw_desc, procunits, "Processing Unit"); |
1da177e4 LT |
1808 | } |
1809 | ||
99fc8645 | 1810 | static int parse_audio_extension_unit(struct mixer_build *state, int unitid, void *raw_desc) |
1da177e4 | 1811 | { |
99fc8645 DM |
1812 | /* Note that we parse extension units with processing unit descriptors. |
1813 | * That's ok as the layout is the same */ | |
1814 | return build_audio_procunit(state, unitid, raw_desc, extunits, "Extension Unit"); | |
1da177e4 LT |
1815 | } |
1816 | ||
1817 | ||
1818 | /* | |
1819 | * Selector Unit | |
1820 | */ | |
1821 | ||
1822 | /* info callback for selector unit | |
1823 | * use an enumerator type for routing | |
1824 | */ | |
86e07d34 | 1825 | static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) |
1da177e4 | 1826 | { |
86e07d34 | 1827 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
2a1803a7 | 1828 | const char **itemlist = (const char **)kcontrol->private_value; |
1da177e4 | 1829 | |
5e246b85 TI |
1830 | if (snd_BUG_ON(!itemlist)) |
1831 | return -EINVAL; | |
2a1803a7 | 1832 | return snd_ctl_enum_info(uinfo, 1, cval->max, itemlist); |
1da177e4 LT |
1833 | } |
1834 | ||
1835 | /* get callback for selector unit */ | |
86e07d34 | 1836 | static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 1837 | { |
86e07d34 | 1838 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1da177e4 LT |
1839 | int val, err; |
1840 | ||
09414207 | 1841 | err = get_cur_ctl_value(cval, cval->control << 8, &val); |
1da177e4 | 1842 | if (err < 0) { |
84957a8a | 1843 | if (cval->mixer->ignore_ctl_error) { |
1da177e4 LT |
1844 | ucontrol->value.enumerated.item[0] = 0; |
1845 | return 0; | |
1846 | } | |
1847 | return err; | |
1848 | } | |
1849 | val = get_relative_value(cval, val); | |
1850 | ucontrol->value.enumerated.item[0] = val; | |
1851 | return 0; | |
1852 | } | |
1853 | ||
1854 | /* put callback for selector unit */ | |
86e07d34 | 1855 | static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
1da177e4 | 1856 | { |
86e07d34 | 1857 | struct usb_mixer_elem_info *cval = kcontrol->private_data; |
1da177e4 LT |
1858 | int val, oval, err; |
1859 | ||
09414207 | 1860 | err = get_cur_ctl_value(cval, cval->control << 8, &oval); |
1da177e4 | 1861 | if (err < 0) { |
84957a8a | 1862 | if (cval->mixer->ignore_ctl_error) |
1da177e4 LT |
1863 | return 0; |
1864 | return err; | |
1865 | } | |
1866 | val = ucontrol->value.enumerated.item[0]; | |
1867 | val = get_abs_value(cval, val); | |
1868 | if (val != oval) { | |
09414207 | 1869 | set_cur_ctl_value(cval, cval->control << 8, val); |
1da177e4 LT |
1870 | return 1; |
1871 | } | |
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | /* alsa control interface for selector unit */ | |
86e07d34 | 1876 | static struct snd_kcontrol_new mixer_selectunit_ctl = { |
1da177e4 LT |
1877 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1878 | .name = "", /* will be filled later */ | |
1879 | .info = mixer_ctl_selector_info, | |
1880 | .get = mixer_ctl_selector_get, | |
1881 | .put = mixer_ctl_selector_put, | |
1882 | }; | |
1883 | ||
1884 | ||
1885 | /* private free callback. | |
1886 | * free both private_data and private_value | |
1887 | */ | |
86e07d34 | 1888 | static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl) |
1da177e4 LT |
1889 | { |
1890 | int i, num_ins = 0; | |
1891 | ||
1892 | if (kctl->private_data) { | |
86e07d34 | 1893 | struct usb_mixer_elem_info *cval = kctl->private_data; |
1da177e4 LT |
1894 | num_ins = cval->max; |
1895 | kfree(cval); | |
1896 | kctl->private_data = NULL; | |
1897 | } | |
1898 | if (kctl->private_value) { | |
1899 | char **itemlist = (char **)kctl->private_value; | |
1900 | for (i = 0; i < num_ins; i++) | |
1901 | kfree(itemlist[i]); | |
1902 | kfree(itemlist); | |
1903 | kctl->private_value = 0; | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | /* | |
1908 | * parse a selector unit | |
1909 | */ | |
99fc8645 | 1910 | static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void *raw_desc) |
1da177e4 | 1911 | { |
99fc8645 | 1912 | struct uac_selector_unit_descriptor *desc = raw_desc; |
1da177e4 LT |
1913 | unsigned int i, nameid, len; |
1914 | int err; | |
86e07d34 TI |
1915 | struct usb_mixer_elem_info *cval; |
1916 | struct snd_kcontrol *kctl; | |
c3a3e040 | 1917 | const struct usbmix_name_map *map; |
1da177e4 LT |
1918 | char **namelist; |
1919 | ||
99fc8645 | 1920 | if (!desc->bNrInPins || desc->bLength < 5 + desc->bNrInPins) { |
1da177e4 LT |
1921 | snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor %d\n", unitid); |
1922 | return -EINVAL; | |
1923 | } | |
1924 | ||
99fc8645 DM |
1925 | for (i = 0; i < desc->bNrInPins; i++) { |
1926 | if ((err = parse_audio_unit(state, desc->baSourceID[i])) < 0) | |
1da177e4 LT |
1927 | return err; |
1928 | } | |
1929 | ||
99fc8645 | 1930 | if (desc->bNrInPins == 1) /* only one ? nonsense! */ |
1da177e4 LT |
1931 | return 0; |
1932 | ||
c3a3e040 JK |
1933 | map = find_map(state, unitid, 0); |
1934 | if (check_ignored_ctl(map)) | |
1da177e4 LT |
1935 | return 0; |
1936 | ||
561b220a | 1937 | cval = kzalloc(sizeof(*cval), GFP_KERNEL); |
1da177e4 LT |
1938 | if (! cval) { |
1939 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); | |
1940 | return -ENOMEM; | |
1941 | } | |
84957a8a | 1942 | cval->mixer = state->mixer; |
1da177e4 LT |
1943 | cval->id = unitid; |
1944 | cval->val_type = USB_MIXER_U8; | |
1945 | cval->channels = 1; | |
1946 | cval->min = 1; | |
99fc8645 | 1947 | cval->max = desc->bNrInPins; |
1da177e4 LT |
1948 | cval->res = 1; |
1949 | cval->initialized = 1; | |
1950 | ||
09414207 DM |
1951 | if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) |
1952 | cval->control = UAC2_CX_CLOCK_SELECTOR; | |
1953 | else | |
1954 | cval->control = 0; | |
1955 | ||
99fc8645 | 1956 | namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL); |
1da177e4 LT |
1957 | if (! namelist) { |
1958 | snd_printk(KERN_ERR "cannot malloc\n"); | |
1959 | kfree(cval); | |
1960 | return -ENOMEM; | |
1961 | } | |
1962 | #define MAX_ITEM_NAME_LEN 64 | |
99fc8645 | 1963 | for (i = 0; i < desc->bNrInPins; i++) { |
86e07d34 | 1964 | struct usb_audio_term iterm; |
1da177e4 LT |
1965 | len = 0; |
1966 | namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL); | |
1967 | if (! namelist[i]) { | |
1968 | snd_printk(KERN_ERR "cannot malloc\n"); | |
7fbe3ca5 | 1969 | while (i--) |
1da177e4 LT |
1970 | kfree(namelist[i]); |
1971 | kfree(namelist); | |
1972 | kfree(cval); | |
1973 | return -ENOMEM; | |
1974 | } | |
8e062ec7 CL |
1975 | len = check_mapped_selector_name(state, unitid, i, namelist[i], |
1976 | MAX_ITEM_NAME_LEN); | |
99fc8645 | 1977 | if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0) |
1da177e4 LT |
1978 | len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0); |
1979 | if (! len) | |
1980 | sprintf(namelist[i], "Input %d", i); | |
1981 | } | |
1982 | ||
1983 | kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval); | |
1984 | if (! kctl) { | |
1985 | snd_printk(KERN_ERR "cannot malloc kcontrol\n"); | |
878b4789 | 1986 | kfree(namelist); |
1da177e4 LT |
1987 | kfree(cval); |
1988 | return -ENOMEM; | |
1989 | } | |
1990 | kctl->private_value = (unsigned long)namelist; | |
1991 | kctl->private_free = usb_mixer_selector_elem_free; | |
1992 | ||
99fc8645 | 1993 | nameid = uac_selector_unit_iSelector(desc); |
c3a3e040 | 1994 | len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)); |
1da177e4 LT |
1995 | if (len) |
1996 | ; | |
1997 | else if (nameid) | |
1998 | snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); | |
1999 | else { | |
2000 | len = get_term_name(state, &state->oterm, | |
2001 | kctl->id.name, sizeof(kctl->id.name), 0); | |
2002 | if (! len) | |
2003 | strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); | |
2004 | ||
09414207 DM |
2005 | if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) |
2006 | append_ctl_name(kctl, " Clock Source"); | |
2007 | else if ((state->oterm.type & 0xff00) == 0x0100) | |
08d1e635 | 2008 | append_ctl_name(kctl, " Capture Source"); |
1da177e4 | 2009 | else |
08d1e635 | 2010 | append_ctl_name(kctl, " Playback Source"); |
1da177e4 LT |
2011 | } |
2012 | ||
2013 | snd_printdd(KERN_INFO "[%d] SU [%s] items = %d\n", | |
99fc8645 | 2014 | cval->id, kctl->id.name, desc->bNrInPins); |
ef9d5970 | 2015 | if ((err = snd_usb_mixer_add_control(state->mixer, kctl)) < 0) |
1da177e4 LT |
2016 | return err; |
2017 | ||
2018 | return 0; | |
2019 | } | |
2020 | ||
2021 | ||
2022 | /* | |
2023 | * parse an audio unit recursively | |
2024 | */ | |
2025 | ||
86e07d34 | 2026 | static int parse_audio_unit(struct mixer_build *state, int unitid) |
1da177e4 LT |
2027 | { |
2028 | unsigned char *p1; | |
2029 | ||
2030 | if (test_and_set_bit(unitid, state->unitbitmap)) | |
2031 | return 0; /* the unit already visited */ | |
2032 | ||
2033 | p1 = find_audio_control_unit(state, unitid); | |
2034 | if (!p1) { | |
2035 | snd_printk(KERN_ERR "usbaudio: unit %d not found!\n", unitid); | |
2036 | return -EINVAL; | |
2037 | } | |
2038 | ||
2039 | switch (p1[2]) { | |
de48c7bc | 2040 | case UAC_INPUT_TERMINAL: |
09414207 | 2041 | case UAC2_CLOCK_SOURCE: |
1da177e4 | 2042 | return 0; /* NOP */ |
de48c7bc | 2043 | case UAC_MIXER_UNIT: |
1da177e4 | 2044 | return parse_audio_mixer_unit(state, unitid, p1); |
de48c7bc | 2045 | case UAC_SELECTOR_UNIT: |
09414207 | 2046 | case UAC2_CLOCK_SELECTOR: |
1da177e4 | 2047 | return parse_audio_selector_unit(state, unitid, p1); |
de48c7bc | 2048 | case UAC_FEATURE_UNIT: |
1da177e4 | 2049 | return parse_audio_feature_unit(state, unitid, p1); |
69da9bcb | 2050 | case UAC1_PROCESSING_UNIT: |
23caaf19 DM |
2051 | /* UAC2_EFFECT_UNIT has the same value */ |
2052 | if (state->mixer->protocol == UAC_VERSION_1) | |
2053 | return parse_audio_processing_unit(state, unitid, p1); | |
2054 | else | |
2055 | return 0; /* FIXME - effect units not implemented yet */ | |
69da9bcb | 2056 | case UAC1_EXTENSION_UNIT: |
23caaf19 DM |
2057 | /* UAC2_PROCESSING_UNIT_V2 has the same value */ |
2058 | if (state->mixer->protocol == UAC_VERSION_1) | |
2059 | return parse_audio_extension_unit(state, unitid, p1); | |
2060 | else /* UAC_VERSION_2 */ | |
2061 | return parse_audio_processing_unit(state, unitid, p1); | |
61ac5130 TH |
2062 | case UAC2_EXTENSION_UNIT_V2: |
2063 | return parse_audio_extension_unit(state, unitid, p1); | |
1da177e4 LT |
2064 | default: |
2065 | snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); | |
2066 | return -EINVAL; | |
2067 | } | |
2068 | } | |
2069 | ||
84957a8a CL |
2070 | static void snd_usb_mixer_free(struct usb_mixer_interface *mixer) |
2071 | { | |
6639b6c2 CL |
2072 | kfree(mixer->id_elems); |
2073 | if (mixer->urb) { | |
2074 | kfree(mixer->urb->transfer_buffer); | |
2075 | usb_free_urb(mixer->urb); | |
2076 | } | |
68df9de1 | 2077 | usb_free_urb(mixer->rc_urb); |
b259b10c | 2078 | kfree(mixer->rc_setup_packet); |
84957a8a CL |
2079 | kfree(mixer); |
2080 | } | |
2081 | ||
86e07d34 | 2082 | static int snd_usb_mixer_dev_free(struct snd_device *device) |
84957a8a CL |
2083 | { |
2084 | struct usb_mixer_interface *mixer = device->device_data; | |
2085 | snd_usb_mixer_free(mixer); | |
2086 | return 0; | |
2087 | } | |
2088 | ||
1da177e4 LT |
2089 | /* |
2090 | * create mixer controls | |
2091 | * | |
de48c7bc | 2092 | * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers |
1da177e4 | 2093 | */ |
84957a8a | 2094 | static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) |
1da177e4 | 2095 | { |
86e07d34 | 2096 | struct mixer_build state; |
1da177e4 LT |
2097 | int err; |
2098 | const struct usbmix_ctl_map *map; | |
23caaf19 | 2099 | void *p; |
1da177e4 LT |
2100 | |
2101 | memset(&state, 0, sizeof(state)); | |
84957a8a CL |
2102 | state.chip = mixer->chip; |
2103 | state.mixer = mixer; | |
1faa5d07 DM |
2104 | state.buffer = mixer->hostif->extra; |
2105 | state.buflen = mixer->hostif->extralen; | |
1da177e4 LT |
2106 | |
2107 | /* check the mapping table */ | |
27d10f56 CL |
2108 | for (map = usbmix_ctl_maps; map->id; map++) { |
2109 | if (map->id == state.chip->usb_id) { | |
1da177e4 | 2110 | state.map = map->map; |
8e062ec7 | 2111 | state.selector_map = map->selector_map; |
84957a8a | 2112 | mixer->ignore_ctl_error = map->ignore_ctl_error; |
1da177e4 LT |
2113 | break; |
2114 | } | |
2115 | } | |
1da177e4 | 2116 | |
23caaf19 | 2117 | p = NULL; |
1faa5d07 DM |
2118 | while ((p = snd_usb_find_csint_desc(mixer->hostif->extra, mixer->hostif->extralen, |
2119 | p, UAC_OUTPUT_TERMINAL)) != NULL) { | |
23caaf19 | 2120 | if (mixer->protocol == UAC_VERSION_1) { |
69da9bcb | 2121 | struct uac1_output_terminal_descriptor *desc = p; |
23caaf19 DM |
2122 | |
2123 | if (desc->bLength < sizeof(*desc)) | |
2124 | continue; /* invalid descriptor? */ | |
2125 | set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */ | |
2126 | state.oterm.id = desc->bTerminalID; | |
2127 | state.oterm.type = le16_to_cpu(desc->wTerminalType); | |
2128 | state.oterm.name = desc->iTerminal; | |
2129 | err = parse_audio_unit(&state, desc->bSourceID); | |
83ea5d18 | 2130 | if (err < 0 && err != -EINVAL) |
23caaf19 DM |
2131 | return err; |
2132 | } else { /* UAC_VERSION_2 */ | |
2133 | struct uac2_output_terminal_descriptor *desc = p; | |
2134 | ||
2135 | if (desc->bLength < sizeof(*desc)) | |
2136 | continue; /* invalid descriptor? */ | |
2137 | set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */ | |
2138 | state.oterm.id = desc->bTerminalID; | |
2139 | state.oterm.type = le16_to_cpu(desc->wTerminalType); | |
2140 | state.oterm.name = desc->iTerminal; | |
2141 | err = parse_audio_unit(&state, desc->bSourceID); | |
83ea5d18 | 2142 | if (err < 0 && err != -EINVAL) |
23caaf19 | 2143 | return err; |
09414207 DM |
2144 | |
2145 | /* for UAC2, use the same approach to also add the clock selectors */ | |
2146 | err = parse_audio_unit(&state, desc->bCSourceID); | |
83ea5d18 | 2147 | if (err < 0 && err != -EINVAL) |
09414207 | 2148 | return err; |
23caaf19 | 2149 | } |
1da177e4 | 2150 | } |
23caaf19 | 2151 | |
1da177e4 LT |
2152 | return 0; |
2153 | } | |
84957a8a | 2154 | |
7b1eda22 | 2155 | void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid) |
6639b6c2 | 2156 | { |
86e07d34 | 2157 | struct usb_mixer_elem_info *info; |
6639b6c2 CL |
2158 | |
2159 | for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) | |
2160 | snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, | |
2161 | info->elem_id); | |
2162 | } | |
2163 | ||
ebfdeea3 JK |
2164 | static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer, |
2165 | int unitid, | |
2166 | struct usb_mixer_elem_info *cval) | |
2167 | { | |
2168 | static char *val_types[] = {"BOOLEAN", "INV_BOOLEAN", | |
2169 | "S8", "U8", "S16", "U16"}; | |
2170 | snd_iprintf(buffer, " Unit: %i\n", unitid); | |
2171 | if (cval->elem_id) | |
2172 | snd_iprintf(buffer, " Control: name=\"%s\", index=%i\n", | |
2173 | cval->elem_id->name, cval->elem_id->index); | |
2174 | snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, " | |
2175 | "channels=%i, type=\"%s\"\n", cval->id, | |
2176 | cval->control, cval->cmask, cval->channels, | |
2177 | val_types[cval->val_type]); | |
2178 | snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n", | |
2179 | cval->min, cval->max, cval->dBmin, cval->dBmax); | |
2180 | } | |
2181 | ||
2182 | static void snd_usb_mixer_proc_read(struct snd_info_entry *entry, | |
2183 | struct snd_info_buffer *buffer) | |
2184 | { | |
2185 | struct snd_usb_audio *chip = entry->private_data; | |
2186 | struct usb_mixer_interface *mixer; | |
2187 | struct usb_mixer_elem_info *cval; | |
2188 | int unitid; | |
2189 | ||
2190 | list_for_each_entry(mixer, &chip->mixer_list, list) { | |
2191 | snd_iprintf(buffer, | |
7affdc17 | 2192 | "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n", |
3d8d4dcf | 2193 | chip->usb_id, snd_usb_ctrl_intf(chip), |
7affdc17 | 2194 | mixer->ignore_ctl_error); |
ebfdeea3 JK |
2195 | snd_iprintf(buffer, "Card: %s\n", chip->card->longname); |
2196 | for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) { | |
2197 | for (cval = mixer->id_elems[unitid]; cval; | |
2198 | cval = cval->next_id_elem) | |
2199 | snd_usb_mixer_dump_cval(buffer, unitid, cval); | |
2200 | } | |
2201 | } | |
2202 | } | |
2203 | ||
e213e9cf DM |
2204 | static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer, |
2205 | int attribute, int value, int index) | |
2206 | { | |
2207 | struct usb_mixer_elem_info *info; | |
2208 | __u8 unitid = (index >> 8) & 0xff; | |
2209 | __u8 control = (value >> 8) & 0xff; | |
2210 | __u8 channel = value & 0xff; | |
2211 | ||
2212 | if (channel >= MAX_CHANNELS) { | |
2213 | snd_printk(KERN_DEBUG "%s(): bogus channel number %d\n", | |
2214 | __func__, channel); | |
2215 | return; | |
2216 | } | |
2217 | ||
2218 | for (info = mixer->id_elems[unitid]; info; info = info->next_id_elem) { | |
2219 | if (info->control != control) | |
2220 | continue; | |
2221 | ||
2222 | switch (attribute) { | |
2223 | case UAC2_CS_CUR: | |
2224 | /* invalidate cache, so the value is read from the device */ | |
2225 | if (channel) | |
2226 | info->cached &= ~(1 << channel); | |
2227 | else /* master channel */ | |
2228 | info->cached = 0; | |
2229 | ||
2230 | snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE, | |
2231 | info->elem_id); | |
2232 | break; | |
2233 | ||
2234 | case UAC2_CS_RANGE: | |
2235 | /* TODO */ | |
2236 | break; | |
2237 | ||
2238 | case UAC2_CS_MEM: | |
2239 | /* TODO */ | |
2240 | break; | |
2241 | ||
2242 | default: | |
2243 | snd_printk(KERN_DEBUG "unknown attribute %d in interrupt\n", | |
2244 | attribute); | |
2245 | break; | |
2246 | } /* switch */ | |
2247 | } | |
2248 | } | |
2249 | ||
2250 | static void snd_usb_mixer_interrupt(struct urb *urb) | |
6639b6c2 CL |
2251 | { |
2252 | struct usb_mixer_interface *mixer = urb->context; | |
e213e9cf | 2253 | int len = urb->actual_length; |
edf7de31 | 2254 | int ustatus = urb->status; |
e213e9cf | 2255 | |
edf7de31 | 2256 | if (ustatus != 0) |
e213e9cf | 2257 | goto requeue; |
6639b6c2 | 2258 | |
e213e9cf DM |
2259 | if (mixer->protocol == UAC_VERSION_1) { |
2260 | struct uac1_status_word *status; | |
6639b6c2 | 2261 | |
e213e9cf DM |
2262 | for (status = urb->transfer_buffer; |
2263 | len >= sizeof(*status); | |
2264 | len -= sizeof(*status), status++) { | |
6639b6c2 | 2265 | snd_printd(KERN_DEBUG "status interrupt: %02x %02x\n", |
e213e9cf DM |
2266 | status->bStatusType, |
2267 | status->bOriginator); | |
2268 | ||
6639b6c2 | 2269 | /* ignore any notifications not from the control interface */ |
e213e9cf DM |
2270 | if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) != |
2271 | UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF) | |
6639b6c2 | 2272 | continue; |
e213e9cf DM |
2273 | |
2274 | if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED) | |
2275 | snd_usb_mixer_rc_memory_change(mixer, status->bOriginator); | |
b259b10c | 2276 | else |
e213e9cf DM |
2277 | snd_usb_mixer_notify_id(mixer, status->bOriginator); |
2278 | } | |
2279 | } else { /* UAC_VERSION_2 */ | |
2280 | struct uac2_interrupt_data_msg *msg; | |
2281 | ||
2282 | for (msg = urb->transfer_buffer; | |
2283 | len >= sizeof(*msg); | |
2284 | len -= sizeof(*msg), msg++) { | |
2285 | /* drop vendor specific and endpoint requests */ | |
2286 | if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) || | |
2287 | (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP)) | |
2288 | continue; | |
2289 | ||
2290 | snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute, | |
2291 | le16_to_cpu(msg->wValue), | |
2292 | le16_to_cpu(msg->wIndex)); | |
6639b6c2 CL |
2293 | } |
2294 | } | |
e213e9cf DM |
2295 | |
2296 | requeue: | |
edf7de31 | 2297 | if (ustatus != -ENOENT && ustatus != -ECONNRESET && ustatus != -ESHUTDOWN) { |
6639b6c2 CL |
2298 | urb->dev = mixer->chip->dev; |
2299 | usb_submit_urb(urb, GFP_ATOMIC); | |
2300 | } | |
2301 | } | |
2302 | ||
edf7de31 ON |
2303 | /* stop any bus activity of a mixer */ |
2304 | void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer) | |
2305 | { | |
2306 | usb_kill_urb(mixer->urb); | |
2307 | usb_kill_urb(mixer->rc_urb); | |
2308 | } | |
2309 | ||
2310 | int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) | |
2311 | { | |
2312 | int err; | |
2313 | ||
2314 | if (mixer->urb) { | |
2315 | err = usb_submit_urb(mixer->urb, GFP_NOIO); | |
2316 | if (err < 0) | |
2317 | return err; | |
2318 | } | |
2319 | ||
2320 | return 0; | |
2321 | } | |
2322 | ||
6639b6c2 CL |
2323 | /* create the handler for the optional status interrupt endpoint */ |
2324 | static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer) | |
2325 | { | |
6639b6c2 CL |
2326 | struct usb_endpoint_descriptor *ep; |
2327 | void *transfer_buffer; | |
2328 | int buffer_length; | |
2329 | unsigned int epnum; | |
2330 | ||
6639b6c2 | 2331 | /* we need one interrupt input endpoint */ |
1faa5d07 | 2332 | if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1) |
6639b6c2 | 2333 | return 0; |
1faa5d07 | 2334 | ep = get_endpoint(mixer->hostif, 0); |
913ae5a2 | 2335 | if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep)) |
6639b6c2 CL |
2336 | return 0; |
2337 | ||
42a6e66f | 2338 | epnum = usb_endpoint_num(ep); |
6639b6c2 CL |
2339 | buffer_length = le16_to_cpu(ep->wMaxPacketSize); |
2340 | transfer_buffer = kmalloc(buffer_length, GFP_KERNEL); | |
2341 | if (!transfer_buffer) | |
2342 | return -ENOMEM; | |
2343 | mixer->urb = usb_alloc_urb(0, GFP_KERNEL); | |
2344 | if (!mixer->urb) { | |
2345 | kfree(transfer_buffer); | |
2346 | return -ENOMEM; | |
2347 | } | |
2348 | usb_fill_int_urb(mixer->urb, mixer->chip->dev, | |
2349 | usb_rcvintpipe(mixer->chip->dev, epnum), | |
2350 | transfer_buffer, buffer_length, | |
e213e9cf | 2351 | snd_usb_mixer_interrupt, mixer, ep->bInterval); |
6639b6c2 CL |
2352 | usb_submit_urb(mixer->urb, GFP_KERNEL); |
2353 | return 0; | |
2354 | } | |
2355 | ||
7a9b8063 TI |
2356 | int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, |
2357 | int ignore_error) | |
84957a8a | 2358 | { |
86e07d34 | 2359 | static struct snd_device_ops dev_ops = { |
84957a8a CL |
2360 | .dev_free = snd_usb_mixer_dev_free |
2361 | }; | |
2362 | struct usb_mixer_interface *mixer; | |
ebfdeea3 | 2363 | struct snd_info_entry *entry; |
23caaf19 | 2364 | int err; |
84957a8a CL |
2365 | |
2366 | strcpy(chip->card->mixername, "USB Mixer"); | |
2367 | ||
561b220a | 2368 | mixer = kzalloc(sizeof(*mixer), GFP_KERNEL); |
84957a8a CL |
2369 | if (!mixer) |
2370 | return -ENOMEM; | |
2371 | mixer->chip = chip; | |
7a9b8063 | 2372 | mixer->ignore_ctl_error = ignore_error; |
291186e0 JK |
2373 | mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems), |
2374 | GFP_KERNEL); | |
6639b6c2 CL |
2375 | if (!mixer->id_elems) { |
2376 | kfree(mixer); | |
2377 | return -ENOMEM; | |
2378 | } | |
84957a8a | 2379 | |
1faa5d07 DM |
2380 | mixer->hostif = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0]; |
2381 | switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) { | |
a2acad82 CL |
2382 | case UAC_VERSION_1: |
2383 | default: | |
2384 | mixer->protocol = UAC_VERSION_1; | |
2385 | break; | |
2386 | case UAC_VERSION_2: | |
2387 | mixer->protocol = UAC_VERSION_2; | |
2388 | break; | |
2389 | } | |
7b8a043f | 2390 | |
6639b6c2 | 2391 | if ((err = snd_usb_mixer_controls(mixer)) < 0 || |
93446edc CL |
2392 | (err = snd_usb_mixer_status_create(mixer)) < 0) |
2393 | goto _error; | |
84957a8a | 2394 | |
7b1eda22 | 2395 | snd_usb_mixer_apply_create_quirk(mixer); |
468b8fde | 2396 | |
84957a8a | 2397 | err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops); |
93446edc CL |
2398 | if (err < 0) |
2399 | goto _error; | |
ebfdeea3 JK |
2400 | |
2401 | if (list_empty(&chip->mixer_list) && | |
2402 | !snd_card_proc_new(chip->card, "usbmixer", &entry)) | |
2403 | snd_info_set_text_ops(entry, chip, snd_usb_mixer_proc_read); | |
2404 | ||
84957a8a CL |
2405 | list_add(&mixer->list, &chip->mixer_list); |
2406 | return 0; | |
93446edc CL |
2407 | |
2408 | _error: | |
2409 | snd_usb_mixer_free(mixer); | |
2410 | return err; | |
84957a8a CL |
2411 | } |
2412 | ||
2413 | void snd_usb_mixer_disconnect(struct list_head *p) | |
2414 | { | |
6639b6c2 | 2415 | struct usb_mixer_interface *mixer; |
7b1eda22 | 2416 | |
6639b6c2 | 2417 | mixer = list_entry(p, struct usb_mixer_interface, list); |
68df9de1 MK |
2418 | usb_kill_urb(mixer->urb); |
2419 | usb_kill_urb(mixer->rc_urb); | |
84957a8a | 2420 | } |