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1 | /* |
2 | * soc-ops.c -- Generic ASoC operations | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
5 | * Copyright 2005 Openedhand Ltd. | |
6 | * Copyright (C) 2010 Slimlogic Ltd. | |
7 | * Copyright (C) 2010 Texas Instruments Inc. | |
8 | * | |
9 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> | |
10 | * with code, comments and ideas from :- | |
11 | * Richard Purdie <richard@openedhand.com> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License as published by the | |
15 | * Free Software Foundation; either version 2 of the License, or (at your | |
16 | * option) any later version. | |
17 | */ | |
18 | ||
19 | #include <linux/module.h> | |
20 | #include <linux/moduleparam.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/pm.h> | |
24 | #include <linux/bitops.h> | |
25 | #include <linux/ctype.h> | |
26 | #include <linux/slab.h> | |
27 | #include <sound/core.h> | |
28 | #include <sound/jack.h> | |
29 | #include <sound/pcm.h> | |
30 | #include <sound/pcm_params.h> | |
31 | #include <sound/soc.h> | |
32 | #include <sound/soc-dpcm.h> | |
33 | #include <sound/initval.h> | |
34 | ||
35 | /** | |
36 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
37 | * @kcontrol: mixer control | |
38 | * @uinfo: control element information | |
39 | * | |
40 | * Callback to provide information about a double enumerated | |
41 | * mixer control. | |
42 | * | |
43 | * Returns 0 for success. | |
44 | */ | |
45 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
46 | struct snd_ctl_elem_info *uinfo) | |
47 | { | |
48 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
49 | ||
50 | return snd_ctl_enum_info(uinfo, e->shift_l == e->shift_r ? 1 : 2, | |
51 | e->items, e->texts); | |
52 | } | |
53 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
54 | ||
55 | /** | |
56 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
57 | * @kcontrol: mixer control | |
58 | * @ucontrol: control element information | |
59 | * | |
60 | * Callback to get the value of a double enumerated mixer. | |
61 | * | |
62 | * Returns 0 for success. | |
63 | */ | |
64 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
65 | struct snd_ctl_elem_value *ucontrol) | |
66 | { | |
67 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
68 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
69 | unsigned int val, item; | |
70 | unsigned int reg_val; | |
71 | int ret; | |
72 | ||
73 | ret = snd_soc_component_read(component, e->reg, ®_val); | |
74 | if (ret) | |
75 | return ret; | |
76 | val = (reg_val >> e->shift_l) & e->mask; | |
77 | item = snd_soc_enum_val_to_item(e, val); | |
78 | ucontrol->value.enumerated.item[0] = item; | |
79 | if (e->shift_l != e->shift_r) { | |
189f06c0 | 80 | val = (reg_val >> e->shift_r) & e->mask; |
7077148f MB |
81 | item = snd_soc_enum_val_to_item(e, val); |
82 | ucontrol->value.enumerated.item[1] = item; | |
83 | } | |
84 | ||
85 | return 0; | |
86 | } | |
87 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
88 | ||
89 | /** | |
90 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
91 | * @kcontrol: mixer control | |
92 | * @ucontrol: control element information | |
93 | * | |
94 | * Callback to set the value of a double enumerated mixer. | |
95 | * | |
96 | * Returns 0 for success. | |
97 | */ | |
98 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
99 | struct snd_ctl_elem_value *ucontrol) | |
100 | { | |
101 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
102 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
103 | unsigned int *item = ucontrol->value.enumerated.item; | |
104 | unsigned int val; | |
105 | unsigned int mask; | |
106 | ||
107 | if (item[0] >= e->items) | |
108 | return -EINVAL; | |
109 | val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l; | |
110 | mask = e->mask << e->shift_l; | |
111 | if (e->shift_l != e->shift_r) { | |
112 | if (item[1] >= e->items) | |
113 | return -EINVAL; | |
114 | val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r; | |
115 | mask |= e->mask << e->shift_r; | |
116 | } | |
117 | ||
118 | return snd_soc_component_update_bits(component, e->reg, mask, val); | |
119 | } | |
120 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
121 | ||
122 | /** | |
8abab35f | 123 | * snd_soc_read_signed - Read a codec register and interpret as signed value |
7077148f MB |
124 | * @component: component |
125 | * @reg: Register to read | |
126 | * @mask: Mask to use after shifting the register value | |
127 | * @shift: Right shift of register value | |
128 | * @sign_bit: Bit that describes if a number is negative or not. | |
129 | * @signed_val: Pointer to where the read value should be stored | |
130 | * | |
131 | * This functions reads a codec register. The register value is shifted right | |
132 | * by 'shift' bits and masked with the given 'mask'. Afterwards it translates | |
133 | * the given registervalue into a signed integer if sign_bit is non-zero. | |
134 | * | |
135 | * Returns 0 on sucess, otherwise an error value | |
136 | */ | |
137 | static int snd_soc_read_signed(struct snd_soc_component *component, | |
138 | unsigned int reg, unsigned int mask, unsigned int shift, | |
139 | unsigned int sign_bit, int *signed_val) | |
140 | { | |
141 | int ret; | |
142 | unsigned int val; | |
143 | ||
144 | ret = snd_soc_component_read(component, reg, &val); | |
145 | if (ret < 0) | |
146 | return ret; | |
147 | ||
148 | val = (val >> shift) & mask; | |
149 | ||
150 | if (!sign_bit) { | |
151 | *signed_val = val; | |
152 | return 0; | |
153 | } | |
154 | ||
155 | /* non-negative number */ | |
156 | if (!(val & BIT(sign_bit))) { | |
157 | *signed_val = val; | |
158 | return 0; | |
159 | } | |
160 | ||
161 | ret = val; | |
162 | ||
163 | /* | |
164 | * The register most probably does not contain a full-sized int. | |
165 | * Instead we have an arbitrary number of bits in a signed | |
166 | * representation which has to be translated into a full-sized int. | |
167 | * This is done by filling up all bits above the sign-bit. | |
168 | */ | |
169 | ret |= ~((int)(BIT(sign_bit) - 1)); | |
170 | ||
171 | *signed_val = ret; | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
176 | /** | |
177 | * snd_soc_info_volsw - single mixer info callback | |
178 | * @kcontrol: mixer control | |
179 | * @uinfo: control element information | |
180 | * | |
181 | * Callback to provide information about a single mixer control, or a double | |
182 | * mixer control that spans 2 registers. | |
183 | * | |
184 | * Returns 0 for success. | |
185 | */ | |
186 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
187 | struct snd_ctl_elem_info *uinfo) | |
188 | { | |
189 | struct soc_mixer_control *mc = | |
190 | (struct soc_mixer_control *)kcontrol->private_value; | |
191 | int platform_max; | |
192 | ||
193 | if (!mc->platform_max) | |
194 | mc->platform_max = mc->max; | |
195 | platform_max = mc->platform_max; | |
196 | ||
197 | if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) | |
198 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
199 | else | |
200 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
201 | ||
202 | uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; | |
203 | uinfo->value.integer.min = 0; | |
204 | uinfo->value.integer.max = platform_max - mc->min; | |
205 | return 0; | |
206 | } | |
207 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
208 | ||
34198710 CK |
209 | /** |
210 | * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls | |
211 | * @kcontrol: mixer control | |
212 | * @uinfo: control element information | |
213 | * | |
214 | * Callback to provide information about a single mixer control, or a double | |
215 | * mixer control that spans 2 registers of the SX TLV type. SX TLV controls | |
216 | * have a range that represents both positive and negative values either side | |
217 | * of zero but without a sign bit. | |
218 | * | |
219 | * Returns 0 for success. | |
220 | */ | |
221 | int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol, | |
222 | struct snd_ctl_elem_info *uinfo) | |
223 | { | |
224 | struct soc_mixer_control *mc = | |
225 | (struct soc_mixer_control *)kcontrol->private_value; | |
226 | ||
227 | snd_soc_info_volsw(kcontrol, uinfo); | |
228 | /* Max represents the number of levels in an SX control not the | |
229 | * maximum value, so add the minimum value back on | |
230 | */ | |
231 | uinfo->value.integer.max += mc->min; | |
232 | ||
233 | return 0; | |
234 | } | |
235 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx); | |
236 | ||
7077148f MB |
237 | /** |
238 | * snd_soc_get_volsw - single mixer get callback | |
239 | * @kcontrol: mixer control | |
240 | * @ucontrol: control element information | |
241 | * | |
242 | * Callback to get the value of a single mixer control, or a double mixer | |
243 | * control that spans 2 registers. | |
244 | * | |
245 | * Returns 0 for success. | |
246 | */ | |
247 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
248 | struct snd_ctl_elem_value *ucontrol) | |
249 | { | |
250 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
251 | struct soc_mixer_control *mc = | |
252 | (struct soc_mixer_control *)kcontrol->private_value; | |
253 | unsigned int reg = mc->reg; | |
254 | unsigned int reg2 = mc->rreg; | |
255 | unsigned int shift = mc->shift; | |
256 | unsigned int rshift = mc->rshift; | |
257 | int max = mc->max; | |
258 | int min = mc->min; | |
259 | int sign_bit = mc->sign_bit; | |
260 | unsigned int mask = (1 << fls(max)) - 1; | |
261 | unsigned int invert = mc->invert; | |
262 | int val; | |
263 | int ret; | |
264 | ||
265 | if (sign_bit) | |
266 | mask = BIT(sign_bit + 1) - 1; | |
267 | ||
268 | ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val); | |
269 | if (ret) | |
270 | return ret; | |
271 | ||
272 | ucontrol->value.integer.value[0] = val - min; | |
273 | if (invert) | |
274 | ucontrol->value.integer.value[0] = | |
275 | max - ucontrol->value.integer.value[0]; | |
276 | ||
277 | if (snd_soc_volsw_is_stereo(mc)) { | |
278 | if (reg == reg2) | |
279 | ret = snd_soc_read_signed(component, reg, mask, rshift, | |
280 | sign_bit, &val); | |
281 | else | |
282 | ret = snd_soc_read_signed(component, reg2, mask, shift, | |
283 | sign_bit, &val); | |
284 | if (ret) | |
285 | return ret; | |
286 | ||
287 | ucontrol->value.integer.value[1] = val - min; | |
288 | if (invert) | |
289 | ucontrol->value.integer.value[1] = | |
290 | max - ucontrol->value.integer.value[1]; | |
291 | } | |
292 | ||
293 | return 0; | |
294 | } | |
295 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
296 | ||
297 | /** | |
298 | * snd_soc_put_volsw - single mixer put callback | |
299 | * @kcontrol: mixer control | |
300 | * @ucontrol: control element information | |
301 | * | |
302 | * Callback to set the value of a single mixer control, or a double mixer | |
303 | * control that spans 2 registers. | |
304 | * | |
305 | * Returns 0 for success. | |
306 | */ | |
307 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
308 | struct snd_ctl_elem_value *ucontrol) | |
309 | { | |
310 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
311 | struct soc_mixer_control *mc = | |
312 | (struct soc_mixer_control *)kcontrol->private_value; | |
313 | unsigned int reg = mc->reg; | |
314 | unsigned int reg2 = mc->rreg; | |
315 | unsigned int shift = mc->shift; | |
316 | unsigned int rshift = mc->rshift; | |
317 | int max = mc->max; | |
318 | int min = mc->min; | |
319 | unsigned int sign_bit = mc->sign_bit; | |
320 | unsigned int mask = (1 << fls(max)) - 1; | |
321 | unsigned int invert = mc->invert; | |
322 | int err; | |
323 | bool type_2r = false; | |
324 | unsigned int val2 = 0; | |
325 | unsigned int val, val_mask; | |
326 | ||
327 | if (sign_bit) | |
328 | mask = BIT(sign_bit + 1) - 1; | |
329 | ||
330 | val = ((ucontrol->value.integer.value[0] + min) & mask); | |
331 | if (invert) | |
332 | val = max - val; | |
333 | val_mask = mask << shift; | |
334 | val = val << shift; | |
335 | if (snd_soc_volsw_is_stereo(mc)) { | |
336 | val2 = ((ucontrol->value.integer.value[1] + min) & mask); | |
337 | if (invert) | |
338 | val2 = max - val2; | |
339 | if (reg == reg2) { | |
340 | val_mask |= mask << rshift; | |
341 | val |= val2 << rshift; | |
342 | } else { | |
343 | val2 = val2 << shift; | |
344 | type_2r = true; | |
345 | } | |
346 | } | |
347 | err = snd_soc_component_update_bits(component, reg, val_mask, val); | |
348 | if (err < 0) | |
349 | return err; | |
350 | ||
351 | if (type_2r) | |
352 | err = snd_soc_component_update_bits(component, reg2, val_mask, | |
353 | val2); | |
354 | ||
355 | return err; | |
356 | } | |
357 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
358 | ||
359 | /** | |
360 | * snd_soc_get_volsw_sx - single mixer get callback | |
361 | * @kcontrol: mixer control | |
362 | * @ucontrol: control element information | |
363 | * | |
364 | * Callback to get the value of a single mixer control, or a double mixer | |
365 | * control that spans 2 registers. | |
366 | * | |
367 | * Returns 0 for success. | |
368 | */ | |
369 | int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol, | |
370 | struct snd_ctl_elem_value *ucontrol) | |
371 | { | |
372 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
373 | struct soc_mixer_control *mc = | |
374 | (struct soc_mixer_control *)kcontrol->private_value; | |
375 | unsigned int reg = mc->reg; | |
376 | unsigned int reg2 = mc->rreg; | |
377 | unsigned int shift = mc->shift; | |
378 | unsigned int rshift = mc->rshift; | |
379 | int max = mc->max; | |
380 | int min = mc->min; | |
381 | int mask = (1 << (fls(min + max) - 1)) - 1; | |
382 | unsigned int val; | |
383 | int ret; | |
384 | ||
385 | ret = snd_soc_component_read(component, reg, &val); | |
386 | if (ret < 0) | |
387 | return ret; | |
388 | ||
389 | ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask; | |
390 | ||
391 | if (snd_soc_volsw_is_stereo(mc)) { | |
392 | ret = snd_soc_component_read(component, reg2, &val); | |
393 | if (ret < 0) | |
394 | return ret; | |
395 | ||
396 | val = ((val >> rshift) - min) & mask; | |
397 | ucontrol->value.integer.value[1] = val; | |
398 | } | |
399 | ||
400 | return 0; | |
401 | } | |
402 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx); | |
403 | ||
404 | /** | |
405 | * snd_soc_put_volsw_sx - double mixer set callback | |
406 | * @kcontrol: mixer control | |
9a11ef7f | 407 | * @ucontrol: control element information |
7077148f MB |
408 | * |
409 | * Callback to set the value of a double mixer control that spans 2 registers. | |
410 | * | |
411 | * Returns 0 for success. | |
412 | */ | |
413 | int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, | |
414 | struct snd_ctl_elem_value *ucontrol) | |
415 | { | |
416 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
417 | struct soc_mixer_control *mc = | |
418 | (struct soc_mixer_control *)kcontrol->private_value; | |
419 | ||
420 | unsigned int reg = mc->reg; | |
421 | unsigned int reg2 = mc->rreg; | |
422 | unsigned int shift = mc->shift; | |
423 | unsigned int rshift = mc->rshift; | |
424 | int max = mc->max; | |
425 | int min = mc->min; | |
426 | int mask = (1 << (fls(min + max) - 1)) - 1; | |
427 | int err = 0; | |
428 | unsigned int val, val_mask, val2 = 0; | |
429 | ||
430 | val_mask = mask << shift; | |
431 | val = (ucontrol->value.integer.value[0] + min) & mask; | |
432 | val = val << shift; | |
433 | ||
434 | err = snd_soc_component_update_bits(component, reg, val_mask, val); | |
435 | if (err < 0) | |
436 | return err; | |
437 | ||
438 | if (snd_soc_volsw_is_stereo(mc)) { | |
439 | val_mask = mask << rshift; | |
440 | val2 = (ucontrol->value.integer.value[1] + min) & mask; | |
441 | val2 = val2 << rshift; | |
442 | ||
443 | err = snd_soc_component_update_bits(component, reg2, val_mask, | |
444 | val2); | |
445 | } | |
446 | return err; | |
447 | } | |
448 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx); | |
449 | ||
450 | /** | |
451 | * snd_soc_info_volsw_range - single mixer info callback with range. | |
452 | * @kcontrol: mixer control | |
453 | * @uinfo: control element information | |
454 | * | |
455 | * Callback to provide information, within a range, about a single | |
456 | * mixer control. | |
457 | * | |
458 | * returns 0 for success. | |
459 | */ | |
460 | int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol, | |
461 | struct snd_ctl_elem_info *uinfo) | |
462 | { | |
463 | struct soc_mixer_control *mc = | |
464 | (struct soc_mixer_control *)kcontrol->private_value; | |
465 | int platform_max; | |
466 | int min = mc->min; | |
467 | ||
468 | if (!mc->platform_max) | |
469 | mc->platform_max = mc->max; | |
470 | platform_max = mc->platform_max; | |
471 | ||
472 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
473 | uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; | |
474 | uinfo->value.integer.min = 0; | |
475 | uinfo->value.integer.max = platform_max - min; | |
476 | ||
477 | return 0; | |
478 | } | |
479 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range); | |
480 | ||
481 | /** | |
482 | * snd_soc_put_volsw_range - single mixer put value callback with range. | |
483 | * @kcontrol: mixer control | |
484 | * @ucontrol: control element information | |
485 | * | |
486 | * Callback to set the value, within a range, for a single mixer control. | |
487 | * | |
488 | * Returns 0 for success. | |
489 | */ | |
490 | int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, | |
491 | struct snd_ctl_elem_value *ucontrol) | |
492 | { | |
493 | struct soc_mixer_control *mc = | |
494 | (struct soc_mixer_control *)kcontrol->private_value; | |
495 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
496 | unsigned int reg = mc->reg; | |
497 | unsigned int rreg = mc->rreg; | |
498 | unsigned int shift = mc->shift; | |
499 | int min = mc->min; | |
500 | int max = mc->max; | |
501 | unsigned int mask = (1 << fls(max)) - 1; | |
502 | unsigned int invert = mc->invert; | |
503 | unsigned int val, val_mask; | |
504 | int ret; | |
505 | ||
506 | if (invert) | |
507 | val = (max - ucontrol->value.integer.value[0]) & mask; | |
508 | else | |
509 | val = ((ucontrol->value.integer.value[0] + min) & mask); | |
510 | val_mask = mask << shift; | |
511 | val = val << shift; | |
512 | ||
513 | ret = snd_soc_component_update_bits(component, reg, val_mask, val); | |
514 | if (ret < 0) | |
515 | return ret; | |
516 | ||
517 | if (snd_soc_volsw_is_stereo(mc)) { | |
518 | if (invert) | |
519 | val = (max - ucontrol->value.integer.value[1]) & mask; | |
520 | else | |
521 | val = ((ucontrol->value.integer.value[1] + min) & mask); | |
522 | val_mask = mask << shift; | |
523 | val = val << shift; | |
524 | ||
525 | ret = snd_soc_component_update_bits(component, rreg, val_mask, | |
526 | val); | |
527 | } | |
528 | ||
529 | return ret; | |
530 | } | |
531 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range); | |
532 | ||
533 | /** | |
534 | * snd_soc_get_volsw_range - single mixer get callback with range | |
535 | * @kcontrol: mixer control | |
536 | * @ucontrol: control element information | |
537 | * | |
538 | * Callback to get the value, within a range, of a single mixer control. | |
539 | * | |
540 | * Returns 0 for success. | |
541 | */ | |
542 | int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol, | |
543 | struct snd_ctl_elem_value *ucontrol) | |
544 | { | |
545 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
546 | struct soc_mixer_control *mc = | |
547 | (struct soc_mixer_control *)kcontrol->private_value; | |
548 | unsigned int reg = mc->reg; | |
549 | unsigned int rreg = mc->rreg; | |
550 | unsigned int shift = mc->shift; | |
551 | int min = mc->min; | |
552 | int max = mc->max; | |
553 | unsigned int mask = (1 << fls(max)) - 1; | |
554 | unsigned int invert = mc->invert; | |
555 | unsigned int val; | |
556 | int ret; | |
557 | ||
558 | ret = snd_soc_component_read(component, reg, &val); | |
559 | if (ret) | |
560 | return ret; | |
561 | ||
562 | ucontrol->value.integer.value[0] = (val >> shift) & mask; | |
563 | if (invert) | |
564 | ucontrol->value.integer.value[0] = | |
565 | max - ucontrol->value.integer.value[0]; | |
566 | else | |
567 | ucontrol->value.integer.value[0] = | |
568 | ucontrol->value.integer.value[0] - min; | |
569 | ||
570 | if (snd_soc_volsw_is_stereo(mc)) { | |
571 | ret = snd_soc_component_read(component, rreg, &val); | |
572 | if (ret) | |
573 | return ret; | |
574 | ||
575 | ucontrol->value.integer.value[1] = (val >> shift) & mask; | |
576 | if (invert) | |
577 | ucontrol->value.integer.value[1] = | |
578 | max - ucontrol->value.integer.value[1]; | |
579 | else | |
580 | ucontrol->value.integer.value[1] = | |
581 | ucontrol->value.integer.value[1] - min; | |
582 | } | |
583 | ||
584 | return 0; | |
585 | } | |
586 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); | |
587 | ||
588 | /** | |
589 | * snd_soc_limit_volume - Set new limit to an existing volume control. | |
590 | * | |
26d9ca34 | 591 | * @card: where to look for the control |
7077148f MB |
592 | * @name: Name of the control |
593 | * @max: new maximum limit | |
594 | * | |
595 | * Return 0 for success, else error. | |
596 | */ | |
26d9ca34 | 597 | int snd_soc_limit_volume(struct snd_soc_card *card, |
7077148f MB |
598 | const char *name, int max) |
599 | { | |
26d9ca34 | 600 | struct snd_card *snd_card = card->snd_card; |
7077148f MB |
601 | struct snd_kcontrol *kctl; |
602 | struct soc_mixer_control *mc; | |
603 | int found = 0; | |
604 | int ret = -EINVAL; | |
605 | ||
606 | /* Sanity check for name and max */ | |
607 | if (unlikely(!name || max <= 0)) | |
608 | return -EINVAL; | |
609 | ||
26d9ca34 | 610 | list_for_each_entry(kctl, &snd_card->controls, list) { |
7077148f MB |
611 | if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) { |
612 | found = 1; | |
613 | break; | |
614 | } | |
615 | } | |
616 | if (found) { | |
617 | mc = (struct soc_mixer_control *)kctl->private_value; | |
618 | if (max <= mc->max) { | |
619 | mc->platform_max = max; | |
620 | ret = 0; | |
621 | } | |
622 | } | |
623 | return ret; | |
624 | } | |
625 | EXPORT_SYMBOL_GPL(snd_soc_limit_volume); | |
626 | ||
627 | int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, | |
628 | struct snd_ctl_elem_info *uinfo) | |
629 | { | |
630 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
631 | struct soc_bytes *params = (void *)kcontrol->private_value; | |
632 | ||
633 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; | |
634 | uinfo->count = params->num_regs * component->val_bytes; | |
635 | ||
636 | return 0; | |
637 | } | |
638 | EXPORT_SYMBOL_GPL(snd_soc_bytes_info); | |
639 | ||
640 | int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, | |
641 | struct snd_ctl_elem_value *ucontrol) | |
642 | { | |
643 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
644 | struct soc_bytes *params = (void *)kcontrol->private_value; | |
645 | int ret; | |
646 | ||
647 | if (component->regmap) | |
648 | ret = regmap_raw_read(component->regmap, params->base, | |
649 | ucontrol->value.bytes.data, | |
650 | params->num_regs * component->val_bytes); | |
651 | else | |
652 | ret = -EINVAL; | |
653 | ||
654 | /* Hide any masked bytes to ensure consistent data reporting */ | |
655 | if (ret == 0 && params->mask) { | |
656 | switch (component->val_bytes) { | |
657 | case 1: | |
658 | ucontrol->value.bytes.data[0] &= ~params->mask; | |
659 | break; | |
660 | case 2: | |
661 | ((u16 *)(&ucontrol->value.bytes.data))[0] | |
662 | &= cpu_to_be16(~params->mask); | |
663 | break; | |
664 | case 4: | |
665 | ((u32 *)(&ucontrol->value.bytes.data))[0] | |
666 | &= cpu_to_be32(~params->mask); | |
667 | break; | |
668 | default: | |
669 | return -EINVAL; | |
670 | } | |
671 | } | |
672 | ||
673 | return ret; | |
674 | } | |
675 | EXPORT_SYMBOL_GPL(snd_soc_bytes_get); | |
676 | ||
677 | int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, | |
678 | struct snd_ctl_elem_value *ucontrol) | |
679 | { | |
680 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
681 | struct soc_bytes *params = (void *)kcontrol->private_value; | |
682 | int ret, len; | |
683 | unsigned int val, mask; | |
684 | void *data; | |
685 | ||
686 | if (!component->regmap || !params->num_regs) | |
687 | return -EINVAL; | |
688 | ||
689 | len = params->num_regs * component->val_bytes; | |
690 | ||
691 | data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA); | |
692 | if (!data) | |
693 | return -ENOMEM; | |
694 | ||
695 | /* | |
696 | * If we've got a mask then we need to preserve the register | |
697 | * bits. We shouldn't modify the incoming data so take a | |
698 | * copy. | |
699 | */ | |
700 | if (params->mask) { | |
701 | ret = regmap_read(component->regmap, params->base, &val); | |
702 | if (ret != 0) | |
703 | goto out; | |
704 | ||
705 | val &= params->mask; | |
706 | ||
707 | switch (component->val_bytes) { | |
708 | case 1: | |
709 | ((u8 *)data)[0] &= ~params->mask; | |
710 | ((u8 *)data)[0] |= val; | |
711 | break; | |
712 | case 2: | |
713 | mask = ~params->mask; | |
714 | ret = regmap_parse_val(component->regmap, | |
715 | &mask, &mask); | |
716 | if (ret != 0) | |
717 | goto out; | |
718 | ||
719 | ((u16 *)data)[0] &= mask; | |
720 | ||
721 | ret = regmap_parse_val(component->regmap, | |
722 | &val, &val); | |
723 | if (ret != 0) | |
724 | goto out; | |
725 | ||
726 | ((u16 *)data)[0] |= val; | |
727 | break; | |
728 | case 4: | |
729 | mask = ~params->mask; | |
730 | ret = regmap_parse_val(component->regmap, | |
731 | &mask, &mask); | |
732 | if (ret != 0) | |
733 | goto out; | |
734 | ||
735 | ((u32 *)data)[0] &= mask; | |
736 | ||
737 | ret = regmap_parse_val(component->regmap, | |
738 | &val, &val); | |
739 | if (ret != 0) | |
740 | goto out; | |
741 | ||
742 | ((u32 *)data)[0] |= val; | |
743 | break; | |
744 | default: | |
745 | ret = -EINVAL; | |
746 | goto out; | |
747 | } | |
748 | } | |
749 | ||
750 | ret = regmap_raw_write(component->regmap, params->base, | |
751 | data, len); | |
752 | ||
753 | out: | |
754 | kfree(data); | |
755 | ||
756 | return ret; | |
757 | } | |
758 | EXPORT_SYMBOL_GPL(snd_soc_bytes_put); | |
759 | ||
760 | int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol, | |
761 | struct snd_ctl_elem_info *ucontrol) | |
762 | { | |
763 | struct soc_bytes_ext *params = (void *)kcontrol->private_value; | |
764 | ||
765 | ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES; | |
766 | ucontrol->count = params->max; | |
767 | ||
768 | return 0; | |
769 | } | |
770 | EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext); | |
771 | ||
772 | int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag, | |
773 | unsigned int size, unsigned int __user *tlv) | |
774 | { | |
775 | struct soc_bytes_ext *params = (void *)kcontrol->private_value; | |
776 | unsigned int count = size < params->max ? size : params->max; | |
777 | int ret = -ENXIO; | |
778 | ||
779 | switch (op_flag) { | |
780 | case SNDRV_CTL_TLV_OP_READ: | |
781 | if (params->get) | |
a1e5e7e9 | 782 | ret = params->get(kcontrol, tlv, count); |
7077148f MB |
783 | break; |
784 | case SNDRV_CTL_TLV_OP_WRITE: | |
785 | if (params->put) | |
a1e5e7e9 | 786 | ret = params->put(kcontrol, tlv, count); |
7077148f MB |
787 | break; |
788 | } | |
789 | return ret; | |
790 | } | |
791 | EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback); | |
792 | ||
793 | /** | |
794 | * snd_soc_info_xr_sx - signed multi register info callback | |
795 | * @kcontrol: mreg control | |
796 | * @uinfo: control element information | |
797 | * | |
798 | * Callback to provide information of a control that can | |
799 | * span multiple codec registers which together | |
800 | * forms a single signed value in a MSB/LSB manner. | |
801 | * | |
802 | * Returns 0 for success. | |
803 | */ | |
804 | int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, | |
805 | struct snd_ctl_elem_info *uinfo) | |
806 | { | |
807 | struct soc_mreg_control *mc = | |
808 | (struct soc_mreg_control *)kcontrol->private_value; | |
809 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
810 | uinfo->count = 1; | |
811 | uinfo->value.integer.min = mc->min; | |
812 | uinfo->value.integer.max = mc->max; | |
813 | ||
814 | return 0; | |
815 | } | |
816 | EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx); | |
817 | ||
818 | /** | |
819 | * snd_soc_get_xr_sx - signed multi register get callback | |
820 | * @kcontrol: mreg control | |
821 | * @ucontrol: control element information | |
822 | * | |
823 | * Callback to get the value of a control that can span | |
824 | * multiple codec registers which together forms a single | |
825 | * signed value in a MSB/LSB manner. The control supports | |
826 | * specifying total no of bits used to allow for bitfields | |
827 | * across the multiple codec registers. | |
828 | * | |
829 | * Returns 0 for success. | |
830 | */ | |
831 | int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, | |
832 | struct snd_ctl_elem_value *ucontrol) | |
833 | { | |
834 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
835 | struct soc_mreg_control *mc = | |
836 | (struct soc_mreg_control *)kcontrol->private_value; | |
837 | unsigned int regbase = mc->regbase; | |
838 | unsigned int regcount = mc->regcount; | |
839 | unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; | |
840 | unsigned int regwmask = (1<<regwshift)-1; | |
841 | unsigned int invert = mc->invert; | |
842 | unsigned long mask = (1UL<<mc->nbits)-1; | |
843 | long min = mc->min; | |
844 | long max = mc->max; | |
845 | long val = 0; | |
846 | unsigned int regval; | |
847 | unsigned int i; | |
848 | int ret; | |
849 | ||
850 | for (i = 0; i < regcount; i++) { | |
851 | ret = snd_soc_component_read(component, regbase+i, ®val); | |
852 | if (ret) | |
853 | return ret; | |
854 | val |= (regval & regwmask) << (regwshift*(regcount-i-1)); | |
855 | } | |
856 | val &= mask; | |
857 | if (min < 0 && val > max) | |
858 | val |= ~mask; | |
859 | if (invert) | |
860 | val = max - val; | |
861 | ucontrol->value.integer.value[0] = val; | |
862 | ||
863 | return 0; | |
864 | } | |
865 | EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx); | |
866 | ||
867 | /** | |
868 | * snd_soc_put_xr_sx - signed multi register get callback | |
869 | * @kcontrol: mreg control | |
870 | * @ucontrol: control element information | |
871 | * | |
872 | * Callback to set the value of a control that can span | |
873 | * multiple codec registers which together forms a single | |
874 | * signed value in a MSB/LSB manner. The control supports | |
875 | * specifying total no of bits used to allow for bitfields | |
876 | * across the multiple codec registers. | |
877 | * | |
878 | * Returns 0 for success. | |
879 | */ | |
880 | int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, | |
881 | struct snd_ctl_elem_value *ucontrol) | |
882 | { | |
883 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
884 | struct soc_mreg_control *mc = | |
885 | (struct soc_mreg_control *)kcontrol->private_value; | |
886 | unsigned int regbase = mc->regbase; | |
887 | unsigned int regcount = mc->regcount; | |
888 | unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; | |
889 | unsigned int regwmask = (1<<regwshift)-1; | |
890 | unsigned int invert = mc->invert; | |
891 | unsigned long mask = (1UL<<mc->nbits)-1; | |
892 | long max = mc->max; | |
893 | long val = ucontrol->value.integer.value[0]; | |
894 | unsigned int i, regval, regmask; | |
895 | int err; | |
896 | ||
897 | if (invert) | |
898 | val = max - val; | |
899 | val &= mask; | |
900 | for (i = 0; i < regcount; i++) { | |
901 | regval = (val >> (regwshift*(regcount-i-1))) & regwmask; | |
902 | regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; | |
903 | err = snd_soc_component_update_bits(component, regbase+i, | |
904 | regmask, regval); | |
905 | if (err < 0) | |
906 | return err; | |
907 | } | |
908 | ||
909 | return 0; | |
910 | } | |
911 | EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); | |
912 | ||
913 | /** | |
914 | * snd_soc_get_strobe - strobe get callback | |
915 | * @kcontrol: mixer control | |
916 | * @ucontrol: control element information | |
917 | * | |
918 | * Callback get the value of a strobe mixer control. | |
919 | * | |
920 | * Returns 0 for success. | |
921 | */ | |
922 | int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, | |
923 | struct snd_ctl_elem_value *ucontrol) | |
924 | { | |
925 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
926 | struct soc_mixer_control *mc = | |
927 | (struct soc_mixer_control *)kcontrol->private_value; | |
928 | unsigned int reg = mc->reg; | |
929 | unsigned int shift = mc->shift; | |
930 | unsigned int mask = 1 << shift; | |
931 | unsigned int invert = mc->invert != 0; | |
932 | unsigned int val; | |
933 | int ret; | |
934 | ||
935 | ret = snd_soc_component_read(component, reg, &val); | |
936 | if (ret) | |
937 | return ret; | |
938 | ||
939 | val &= mask; | |
940 | ||
941 | if (shift != 0 && val != 0) | |
942 | val = val >> shift; | |
943 | ucontrol->value.enumerated.item[0] = val ^ invert; | |
944 | ||
945 | return 0; | |
946 | } | |
947 | EXPORT_SYMBOL_GPL(snd_soc_get_strobe); | |
948 | ||
949 | /** | |
950 | * snd_soc_put_strobe - strobe put callback | |
951 | * @kcontrol: mixer control | |
952 | * @ucontrol: control element information | |
953 | * | |
954 | * Callback strobe a register bit to high then low (or the inverse) | |
955 | * in one pass of a single mixer enum control. | |
956 | * | |
957 | * Returns 1 for success. | |
958 | */ | |
959 | int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, | |
960 | struct snd_ctl_elem_value *ucontrol) | |
961 | { | |
962 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); | |
963 | struct soc_mixer_control *mc = | |
964 | (struct soc_mixer_control *)kcontrol->private_value; | |
965 | unsigned int reg = mc->reg; | |
966 | unsigned int shift = mc->shift; | |
967 | unsigned int mask = 1 << shift; | |
968 | unsigned int invert = mc->invert != 0; | |
969 | unsigned int strobe = ucontrol->value.enumerated.item[0] != 0; | |
970 | unsigned int val1 = (strobe ^ invert) ? mask : 0; | |
971 | unsigned int val2 = (strobe ^ invert) ? 0 : mask; | |
972 | int err; | |
973 | ||
974 | err = snd_soc_component_update_bits(component, reg, mask, val1); | |
975 | if (err < 0) | |
976 | return err; | |
977 | ||
978 | return snd_soc_component_update_bits(component, reg, mask, val2); | |
979 | } | |
980 | EXPORT_SYMBOL_GPL(snd_soc_put_strobe); |