1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | // |
3 | // soc-ops.c -- Generic ASoC operations |
4 | // |
5 | // Copyright 2005 Wolfson Microelectronics PLC. |
6 | // Copyright 2005 Openedhand Ltd. |
7 | // Copyright (C) 2010 Slimlogic Ltd. |
8 | // Copyright (C) 2010 Texas Instruments Inc. |
9 | // |
10 | // Author: Liam Girdwood <lrg@slimlogic.co.uk> |
11 | // with code, comments and ideas from :- |
12 | // Richard Purdie <richard@openedhand.com> |
13 | |
14 | #include <linux/module.h> |
15 | #include <linux/moduleparam.h> |
16 | #include <linux/init.h> |
17 | #include <linux/pm.h> |
18 | #include <linux/bitops.h> |
19 | #include <linux/ctype.h> |
20 | #include <linux/slab.h> |
21 | #include <sound/core.h> |
22 | #include <sound/jack.h> |
23 | #include <sound/pcm.h> |
24 | #include <sound/pcm_params.h> |
25 | #include <sound/soc.h> |
26 | #include <sound/soc-dpcm.h> |
27 | #include <sound/initval.h> |
28 | |
29 | /** |
30 | * snd_soc_info_enum_double - enumerated double mixer info callback |
31 | * @kcontrol: mixer control |
32 | * @uinfo: control element information |
33 | * |
34 | * Callback to provide information about a double enumerated |
35 | * mixer control. |
36 | * |
37 | * Returns 0 for success. |
38 | */ |
39 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, |
40 | struct snd_ctl_elem_info *uinfo) |
41 | { |
42 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
43 | |
44 | return snd_ctl_enum_info(info: uinfo, channels: e->shift_l == e->shift_r ? 1 : 2, |
45 | items: e->items, names: e->texts); |
46 | } |
47 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); |
48 | |
49 | /** |
50 | * snd_soc_get_enum_double - enumerated double mixer get callback |
51 | * @kcontrol: mixer control |
52 | * @ucontrol: control element information |
53 | * |
54 | * Callback to get the value of a double enumerated mixer. |
55 | * |
56 | * Returns 0 for success. |
57 | */ |
58 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, |
59 | struct snd_ctl_elem_value *ucontrol) |
60 | { |
61 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
62 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
63 | unsigned int val, item; |
64 | unsigned int reg_val; |
65 | |
66 | reg_val = snd_soc_component_read(component, reg: e->reg); |
67 | val = (reg_val >> e->shift_l) & e->mask; |
68 | item = snd_soc_enum_val_to_item(e, val); |
69 | ucontrol->value.enumerated.item[0] = item; |
70 | if (e->shift_l != e->shift_r) { |
71 | val = (reg_val >> e->shift_r) & e->mask; |
72 | item = snd_soc_enum_val_to_item(e, val); |
73 | ucontrol->value.enumerated.item[1] = item; |
74 | } |
75 | |
76 | return 0; |
77 | } |
78 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); |
79 | |
80 | /** |
81 | * snd_soc_put_enum_double - enumerated double mixer put callback |
82 | * @kcontrol: mixer control |
83 | * @ucontrol: control element information |
84 | * |
85 | * Callback to set the value of a double enumerated mixer. |
86 | * |
87 | * Returns 0 for success. |
88 | */ |
89 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, |
90 | struct snd_ctl_elem_value *ucontrol) |
91 | { |
92 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
93 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
94 | unsigned int *item = ucontrol->value.enumerated.item; |
95 | unsigned int val; |
96 | unsigned int mask; |
97 | |
98 | if (item[0] >= e->items) |
99 | return -EINVAL; |
100 | val = snd_soc_enum_item_to_val(e, item: item[0]) << e->shift_l; |
101 | mask = e->mask << e->shift_l; |
102 | if (e->shift_l != e->shift_r) { |
103 | if (item[1] >= e->items) |
104 | return -EINVAL; |
105 | val |= snd_soc_enum_item_to_val(e, item: item[1]) << e->shift_r; |
106 | mask |= e->mask << e->shift_r; |
107 | } |
108 | |
109 | return snd_soc_component_update_bits(component, reg: e->reg, mask, val); |
110 | } |
111 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); |
112 | |
113 | /** |
114 | * snd_soc_read_signed - Read a codec register and interpret as signed value |
115 | * @component: component |
116 | * @reg: Register to read |
117 | * @mask: Mask to use after shifting the register value |
118 | * @shift: Right shift of register value |
119 | * @sign_bit: Bit that describes if a number is negative or not. |
120 | * @signed_val: Pointer to where the read value should be stored |
121 | * |
122 | * This functions reads a codec register. The register value is shifted right |
123 | * by 'shift' bits and masked with the given 'mask'. Afterwards it translates |
124 | * the given registervalue into a signed integer if sign_bit is non-zero. |
125 | * |
126 | * Returns 0 on sucess, otherwise an error value |
127 | */ |
128 | static int snd_soc_read_signed(struct snd_soc_component *component, |
129 | unsigned int reg, unsigned int mask, unsigned int shift, |
130 | unsigned int sign_bit, int *signed_val) |
131 | { |
132 | int ret; |
133 | unsigned int val; |
134 | |
135 | val = snd_soc_component_read(component, reg); |
136 | val = (val >> shift) & mask; |
137 | |
138 | if (!sign_bit) { |
139 | *signed_val = val; |
140 | return 0; |
141 | } |
142 | |
143 | /* non-negative number */ |
144 | if (!(val & BIT(sign_bit))) { |
145 | *signed_val = val; |
146 | return 0; |
147 | } |
148 | |
149 | ret = val; |
150 | |
151 | /* |
152 | * The register most probably does not contain a full-sized int. |
153 | * Instead we have an arbitrary number of bits in a signed |
154 | * representation which has to be translated into a full-sized int. |
155 | * This is done by filling up all bits above the sign-bit. |
156 | */ |
157 | ret |= ~((int)(BIT(sign_bit) - 1)); |
158 | |
159 | *signed_val = ret; |
160 | |
161 | return 0; |
162 | } |
163 | |
164 | /** |
165 | * snd_soc_info_volsw - single mixer info callback |
166 | * @kcontrol: mixer control |
167 | * @uinfo: control element information |
168 | * |
169 | * Callback to provide information about a single mixer control, or a double |
170 | * mixer control that spans 2 registers. |
171 | * |
172 | * Returns 0 for success. |
173 | */ |
174 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, |
175 | struct snd_ctl_elem_info *uinfo) |
176 | { |
177 | struct soc_mixer_control *mc = |
178 | (struct soc_mixer_control *)kcontrol->private_value; |
179 | const char *vol_string = NULL; |
180 | int max; |
181 | |
182 | max = uinfo->value.integer.max = mc->max - mc->min; |
183 | if (mc->platform_max && mc->platform_max < max) |
184 | max = mc->platform_max; |
185 | |
186 | if (max == 1) { |
187 | /* Even two value controls ending in Volume should always be integer */ |
188 | vol_string = strstr(kcontrol->id.name, " Volume" ); |
189 | if (vol_string && !strcmp(vol_string, " Volume" )) |
190 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
191 | else |
192 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
193 | } else { |
194 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
195 | } |
196 | |
197 | uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; |
198 | uinfo->value.integer.min = 0; |
199 | uinfo->value.integer.max = max; |
200 | |
201 | return 0; |
202 | } |
203 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); |
204 | |
205 | /** |
206 | * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls |
207 | * @kcontrol: mixer control |
208 | * @uinfo: control element information |
209 | * |
210 | * Callback to provide information about a single mixer control, or a double |
211 | * mixer control that spans 2 registers of the SX TLV type. SX TLV controls |
212 | * have a range that represents both positive and negative values either side |
213 | * of zero but without a sign bit. min is the minimum register value, max is |
214 | * the number of steps. |
215 | * |
216 | * Returns 0 for success. |
217 | */ |
218 | int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol, |
219 | struct snd_ctl_elem_info *uinfo) |
220 | { |
221 | struct soc_mixer_control *mc = |
222 | (struct soc_mixer_control *)kcontrol->private_value; |
223 | int max; |
224 | |
225 | if (mc->platform_max) |
226 | max = mc->platform_max; |
227 | else |
228 | max = mc->max; |
229 | |
230 | if (max == 1 && !strstr(kcontrol->id.name, " Volume" )) |
231 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
232 | else |
233 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
234 | |
235 | uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; |
236 | uinfo->value.integer.min = 0; |
237 | uinfo->value.integer.max = max; |
238 | |
239 | return 0; |
240 | } |
241 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx); |
242 | |
243 | /** |
244 | * snd_soc_get_volsw - single mixer get callback |
245 | * @kcontrol: mixer control |
246 | * @ucontrol: control element information |
247 | * |
248 | * Callback to get the value of a single mixer control, or a double mixer |
249 | * control that spans 2 registers. |
250 | * |
251 | * Returns 0 for success. |
252 | */ |
253 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, |
254 | struct snd_ctl_elem_value *ucontrol) |
255 | { |
256 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
257 | struct soc_mixer_control *mc = |
258 | (struct soc_mixer_control *)kcontrol->private_value; |
259 | unsigned int reg = mc->reg; |
260 | unsigned int reg2 = mc->rreg; |
261 | unsigned int shift = mc->shift; |
262 | unsigned int rshift = mc->rshift; |
263 | int max = mc->max; |
264 | int min = mc->min; |
265 | int sign_bit = mc->sign_bit; |
266 | unsigned int mask = (1 << fls(x: max)) - 1; |
267 | unsigned int invert = mc->invert; |
268 | int val; |
269 | int ret; |
270 | |
271 | if (sign_bit) |
272 | mask = BIT(sign_bit + 1) - 1; |
273 | |
274 | ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, signed_val: &val); |
275 | if (ret) |
276 | return ret; |
277 | |
278 | ucontrol->value.integer.value[0] = val - min; |
279 | if (invert) |
280 | ucontrol->value.integer.value[0] = |
281 | max - ucontrol->value.integer.value[0]; |
282 | |
283 | if (snd_soc_volsw_is_stereo(mc)) { |
284 | if (reg == reg2) |
285 | ret = snd_soc_read_signed(component, reg, mask, shift: rshift, |
286 | sign_bit, signed_val: &val); |
287 | else |
288 | ret = snd_soc_read_signed(component, reg: reg2, mask, shift, |
289 | sign_bit, signed_val: &val); |
290 | if (ret) |
291 | return ret; |
292 | |
293 | ucontrol->value.integer.value[1] = val - min; |
294 | if (invert) |
295 | ucontrol->value.integer.value[1] = |
296 | max - ucontrol->value.integer.value[1]; |
297 | } |
298 | |
299 | return 0; |
300 | } |
301 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); |
302 | |
303 | /** |
304 | * snd_soc_put_volsw - single mixer put callback |
305 | * @kcontrol: mixer control |
306 | * @ucontrol: control element information |
307 | * |
308 | * Callback to set the value of a single mixer control, or a double mixer |
309 | * control that spans 2 registers. |
310 | * |
311 | * Returns 0 for success. |
312 | */ |
313 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, |
314 | struct snd_ctl_elem_value *ucontrol) |
315 | { |
316 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
317 | struct soc_mixer_control *mc = |
318 | (struct soc_mixer_control *)kcontrol->private_value; |
319 | unsigned int reg = mc->reg; |
320 | unsigned int reg2 = mc->rreg; |
321 | unsigned int shift = mc->shift; |
322 | unsigned int rshift = mc->rshift; |
323 | int max = mc->max; |
324 | int min = mc->min; |
325 | unsigned int sign_bit = mc->sign_bit; |
326 | unsigned int mask = (1 << fls(x: max)) - 1; |
327 | unsigned int invert = mc->invert; |
328 | int err, ret; |
329 | bool type_2r = false; |
330 | unsigned int val2 = 0; |
331 | unsigned int val, val_mask; |
332 | |
333 | if (sign_bit) |
334 | mask = BIT(sign_bit + 1) - 1; |
335 | |
336 | if (ucontrol->value.integer.value[0] < 0) |
337 | return -EINVAL; |
338 | val = ucontrol->value.integer.value[0]; |
339 | if (mc->platform_max && ((int)val + min) > mc->platform_max) |
340 | return -EINVAL; |
341 | if (val > max - min) |
342 | return -EINVAL; |
343 | val = (val + min) & mask; |
344 | if (invert) |
345 | val = max - val; |
346 | val_mask = mask << shift; |
347 | val = val << shift; |
348 | if (snd_soc_volsw_is_stereo(mc)) { |
349 | if (ucontrol->value.integer.value[1] < 0) |
350 | return -EINVAL; |
351 | val2 = ucontrol->value.integer.value[1]; |
352 | if (mc->platform_max && ((int)val2 + min) > mc->platform_max) |
353 | return -EINVAL; |
354 | if (val2 > max - min) |
355 | return -EINVAL; |
356 | val2 = (val2 + min) & mask; |
357 | if (invert) |
358 | val2 = max - val2; |
359 | if (reg == reg2) { |
360 | val_mask |= mask << rshift; |
361 | val |= val2 << rshift; |
362 | } else { |
363 | val2 = val2 << shift; |
364 | type_2r = true; |
365 | } |
366 | } |
367 | err = snd_soc_component_update_bits(component, reg, mask: val_mask, val); |
368 | if (err < 0) |
369 | return err; |
370 | ret = err; |
371 | |
372 | if (type_2r) { |
373 | err = snd_soc_component_update_bits(component, reg: reg2, mask: val_mask, |
374 | val: val2); |
375 | /* Don't discard any error code or drop change flag */ |
376 | if (ret == 0 || err < 0) { |
377 | ret = err; |
378 | } |
379 | } |
380 | |
381 | return ret; |
382 | } |
383 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); |
384 | |
385 | /** |
386 | * snd_soc_get_volsw_sx - single mixer get callback |
387 | * @kcontrol: mixer control |
388 | * @ucontrol: control element information |
389 | * |
390 | * Callback to get the value of a single mixer control, or a double mixer |
391 | * control that spans 2 registers. |
392 | * |
393 | * Returns 0 for success. |
394 | */ |
395 | int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol, |
396 | struct snd_ctl_elem_value *ucontrol) |
397 | { |
398 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
399 | struct soc_mixer_control *mc = |
400 | (struct soc_mixer_control *)kcontrol->private_value; |
401 | unsigned int reg = mc->reg; |
402 | unsigned int reg2 = mc->rreg; |
403 | unsigned int shift = mc->shift; |
404 | unsigned int rshift = mc->rshift; |
405 | int max = mc->max; |
406 | int min = mc->min; |
407 | unsigned int mask = (1U << (fls(x: min + max) - 1)) - 1; |
408 | unsigned int val; |
409 | |
410 | val = snd_soc_component_read(component, reg); |
411 | ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask; |
412 | |
413 | if (snd_soc_volsw_is_stereo(mc)) { |
414 | val = snd_soc_component_read(component, reg: reg2); |
415 | val = ((val >> rshift) - min) & mask; |
416 | ucontrol->value.integer.value[1] = val; |
417 | } |
418 | |
419 | return 0; |
420 | } |
421 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx); |
422 | |
423 | /** |
424 | * snd_soc_put_volsw_sx - double mixer set callback |
425 | * @kcontrol: mixer control |
426 | * @ucontrol: control element information |
427 | * |
428 | * Callback to set the value of a double mixer control that spans 2 registers. |
429 | * |
430 | * Returns 0 for success. |
431 | */ |
432 | int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, |
433 | struct snd_ctl_elem_value *ucontrol) |
434 | { |
435 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
436 | struct soc_mixer_control *mc = |
437 | (struct soc_mixer_control *)kcontrol->private_value; |
438 | |
439 | unsigned int reg = mc->reg; |
440 | unsigned int reg2 = mc->rreg; |
441 | unsigned int shift = mc->shift; |
442 | unsigned int rshift = mc->rshift; |
443 | int max = mc->max; |
444 | int min = mc->min; |
445 | unsigned int mask = (1U << (fls(x: min + max) - 1)) - 1; |
446 | int err = 0; |
447 | int ret; |
448 | unsigned int val, val_mask; |
449 | |
450 | if (ucontrol->value.integer.value[0] < 0) |
451 | return -EINVAL; |
452 | val = ucontrol->value.integer.value[0]; |
453 | if (mc->platform_max && val > mc->platform_max) |
454 | return -EINVAL; |
455 | if (val > max) |
456 | return -EINVAL; |
457 | val_mask = mask << shift; |
458 | val = (val + min) & mask; |
459 | val = val << shift; |
460 | |
461 | err = snd_soc_component_update_bits(component, reg, mask: val_mask, val); |
462 | if (err < 0) |
463 | return err; |
464 | ret = err; |
465 | |
466 | if (snd_soc_volsw_is_stereo(mc)) { |
467 | unsigned int val2 = ucontrol->value.integer.value[1]; |
468 | |
469 | if (mc->platform_max && val2 > mc->platform_max) |
470 | return -EINVAL; |
471 | if (val2 > max) |
472 | return -EINVAL; |
473 | |
474 | val_mask = mask << rshift; |
475 | val2 = (val2 + min) & mask; |
476 | val2 = val2 << rshift; |
477 | |
478 | err = snd_soc_component_update_bits(component, reg: reg2, mask: val_mask, |
479 | val: val2); |
480 | |
481 | /* Don't discard any error code or drop change flag */ |
482 | if (ret == 0 || err < 0) { |
483 | ret = err; |
484 | } |
485 | } |
486 | return ret; |
487 | } |
488 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx); |
489 | |
490 | /** |
491 | * snd_soc_info_volsw_range - single mixer info callback with range. |
492 | * @kcontrol: mixer control |
493 | * @uinfo: control element information |
494 | * |
495 | * Callback to provide information, within a range, about a single |
496 | * mixer control. |
497 | * |
498 | * returns 0 for success. |
499 | */ |
500 | int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol, |
501 | struct snd_ctl_elem_info *uinfo) |
502 | { |
503 | struct soc_mixer_control *mc = |
504 | (struct soc_mixer_control *)kcontrol->private_value; |
505 | int platform_max; |
506 | int min = mc->min; |
507 | |
508 | if (!mc->platform_max) |
509 | mc->platform_max = mc->max; |
510 | platform_max = mc->platform_max; |
511 | |
512 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
513 | uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; |
514 | uinfo->value.integer.min = 0; |
515 | uinfo->value.integer.max = platform_max - min; |
516 | |
517 | return 0; |
518 | } |
519 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range); |
520 | |
521 | /** |
522 | * snd_soc_put_volsw_range - single mixer put value callback with range. |
523 | * @kcontrol: mixer control |
524 | * @ucontrol: control element information |
525 | * |
526 | * Callback to set the value, within a range, for a single mixer control. |
527 | * |
528 | * Returns 0 for success. |
529 | */ |
530 | int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, |
531 | struct snd_ctl_elem_value *ucontrol) |
532 | { |
533 | struct soc_mixer_control *mc = |
534 | (struct soc_mixer_control *)kcontrol->private_value; |
535 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
536 | unsigned int reg = mc->reg; |
537 | unsigned int rreg = mc->rreg; |
538 | unsigned int shift = mc->shift; |
539 | int min = mc->min; |
540 | int max = mc->max; |
541 | unsigned int mask = (1 << fls(x: max)) - 1; |
542 | unsigned int invert = mc->invert; |
543 | unsigned int val, val_mask; |
544 | int err, ret, tmp; |
545 | |
546 | tmp = ucontrol->value.integer.value[0]; |
547 | if (tmp < 0) |
548 | return -EINVAL; |
549 | if (mc->platform_max && tmp > mc->platform_max) |
550 | return -EINVAL; |
551 | if (tmp > mc->max - mc->min) |
552 | return -EINVAL; |
553 | |
554 | if (invert) |
555 | val = (max - ucontrol->value.integer.value[0]) & mask; |
556 | else |
557 | val = ((ucontrol->value.integer.value[0] + min) & mask); |
558 | val_mask = mask << shift; |
559 | val = val << shift; |
560 | |
561 | err = snd_soc_component_update_bits(component, reg, mask: val_mask, val); |
562 | if (err < 0) |
563 | return err; |
564 | ret = err; |
565 | |
566 | if (snd_soc_volsw_is_stereo(mc)) { |
567 | tmp = ucontrol->value.integer.value[1]; |
568 | if (tmp < 0) |
569 | return -EINVAL; |
570 | if (mc->platform_max && tmp > mc->platform_max) |
571 | return -EINVAL; |
572 | if (tmp > mc->max - mc->min) |
573 | return -EINVAL; |
574 | |
575 | if (invert) |
576 | val = (max - ucontrol->value.integer.value[1]) & mask; |
577 | else |
578 | val = ((ucontrol->value.integer.value[1] + min) & mask); |
579 | val_mask = mask << shift; |
580 | val = val << shift; |
581 | |
582 | err = snd_soc_component_update_bits(component, reg: rreg, mask: val_mask, |
583 | val); |
584 | /* Don't discard any error code or drop change flag */ |
585 | if (ret == 0 || err < 0) { |
586 | ret = err; |
587 | } |
588 | } |
589 | |
590 | return ret; |
591 | } |
592 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range); |
593 | |
594 | /** |
595 | * snd_soc_get_volsw_range - single mixer get callback with range |
596 | * @kcontrol: mixer control |
597 | * @ucontrol: control element information |
598 | * |
599 | * Callback to get the value, within a range, of a single mixer control. |
600 | * |
601 | * Returns 0 for success. |
602 | */ |
603 | int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol, |
604 | struct snd_ctl_elem_value *ucontrol) |
605 | { |
606 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
607 | struct soc_mixer_control *mc = |
608 | (struct soc_mixer_control *)kcontrol->private_value; |
609 | unsigned int reg = mc->reg; |
610 | unsigned int rreg = mc->rreg; |
611 | unsigned int shift = mc->shift; |
612 | int min = mc->min; |
613 | int max = mc->max; |
614 | unsigned int mask = (1 << fls(x: max)) - 1; |
615 | unsigned int invert = mc->invert; |
616 | unsigned int val; |
617 | |
618 | val = snd_soc_component_read(component, reg); |
619 | ucontrol->value.integer.value[0] = (val >> shift) & mask; |
620 | if (invert) |
621 | ucontrol->value.integer.value[0] = |
622 | max - ucontrol->value.integer.value[0]; |
623 | else |
624 | ucontrol->value.integer.value[0] = |
625 | ucontrol->value.integer.value[0] - min; |
626 | |
627 | if (snd_soc_volsw_is_stereo(mc)) { |
628 | val = snd_soc_component_read(component, reg: rreg); |
629 | ucontrol->value.integer.value[1] = (val >> shift) & mask; |
630 | if (invert) |
631 | ucontrol->value.integer.value[1] = |
632 | max - ucontrol->value.integer.value[1]; |
633 | else |
634 | ucontrol->value.integer.value[1] = |
635 | ucontrol->value.integer.value[1] - min; |
636 | } |
637 | |
638 | return 0; |
639 | } |
640 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); |
641 | |
642 | /** |
643 | * snd_soc_limit_volume - Set new limit to an existing volume control. |
644 | * |
645 | * @card: where to look for the control |
646 | * @name: Name of the control |
647 | * @max: new maximum limit |
648 | * |
649 | * Return 0 for success, else error. |
650 | */ |
651 | int snd_soc_limit_volume(struct snd_soc_card *card, |
652 | const char *name, int max) |
653 | { |
654 | struct snd_kcontrol *kctl; |
655 | int ret = -EINVAL; |
656 | |
657 | /* Sanity check for name and max */ |
658 | if (unlikely(!name || max <= 0)) |
659 | return -EINVAL; |
660 | |
661 | kctl = snd_soc_card_get_kcontrol(soc_card: card, name); |
662 | if (kctl) { |
663 | struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value; |
664 | if (max <= mc->max) { |
665 | mc->platform_max = max; |
666 | ret = 0; |
667 | } |
668 | } |
669 | return ret; |
670 | } |
671 | EXPORT_SYMBOL_GPL(snd_soc_limit_volume); |
672 | |
673 | int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, |
674 | struct snd_ctl_elem_info *uinfo) |
675 | { |
676 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
677 | struct soc_bytes *params = (void *)kcontrol->private_value; |
678 | |
679 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; |
680 | uinfo->count = params->num_regs * component->val_bytes; |
681 | |
682 | return 0; |
683 | } |
684 | EXPORT_SYMBOL_GPL(snd_soc_bytes_info); |
685 | |
686 | int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, |
687 | struct snd_ctl_elem_value *ucontrol) |
688 | { |
689 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
690 | struct soc_bytes *params = (void *)kcontrol->private_value; |
691 | int ret; |
692 | |
693 | if (component->regmap) |
694 | ret = regmap_raw_read(map: component->regmap, reg: params->base, |
695 | val: ucontrol->value.bytes.data, |
696 | val_len: params->num_regs * component->val_bytes); |
697 | else |
698 | ret = -EINVAL; |
699 | |
700 | /* Hide any masked bytes to ensure consistent data reporting */ |
701 | if (ret == 0 && params->mask) { |
702 | switch (component->val_bytes) { |
703 | case 1: |
704 | ucontrol->value.bytes.data[0] &= ~params->mask; |
705 | break; |
706 | case 2: |
707 | ((u16 *)(&ucontrol->value.bytes.data))[0] |
708 | &= cpu_to_be16(~params->mask); |
709 | break; |
710 | case 4: |
711 | ((u32 *)(&ucontrol->value.bytes.data))[0] |
712 | &= cpu_to_be32(~params->mask); |
713 | break; |
714 | default: |
715 | return -EINVAL; |
716 | } |
717 | } |
718 | |
719 | return ret; |
720 | } |
721 | EXPORT_SYMBOL_GPL(snd_soc_bytes_get); |
722 | |
723 | int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, |
724 | struct snd_ctl_elem_value *ucontrol) |
725 | { |
726 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
727 | struct soc_bytes *params = (void *)kcontrol->private_value; |
728 | int ret, len; |
729 | unsigned int val, mask; |
730 | void *data; |
731 | |
732 | if (!component->regmap || !params->num_regs) |
733 | return -EINVAL; |
734 | |
735 | len = params->num_regs * component->val_bytes; |
736 | |
737 | data = kmemdup(p: ucontrol->value.bytes.data, size: len, GFP_KERNEL | GFP_DMA); |
738 | if (!data) |
739 | return -ENOMEM; |
740 | |
741 | /* |
742 | * If we've got a mask then we need to preserve the register |
743 | * bits. We shouldn't modify the incoming data so take a |
744 | * copy. |
745 | */ |
746 | if (params->mask) { |
747 | ret = regmap_read(map: component->regmap, reg: params->base, val: &val); |
748 | if (ret != 0) |
749 | goto out; |
750 | |
751 | val &= params->mask; |
752 | |
753 | switch (component->val_bytes) { |
754 | case 1: |
755 | ((u8 *)data)[0] &= ~params->mask; |
756 | ((u8 *)data)[0] |= val; |
757 | break; |
758 | case 2: |
759 | mask = ~params->mask; |
760 | ret = regmap_parse_val(map: component->regmap, |
761 | buf: &mask, val: &mask); |
762 | if (ret != 0) |
763 | goto out; |
764 | |
765 | ((u16 *)data)[0] &= mask; |
766 | |
767 | ret = regmap_parse_val(map: component->regmap, |
768 | buf: &val, val: &val); |
769 | if (ret != 0) |
770 | goto out; |
771 | |
772 | ((u16 *)data)[0] |= val; |
773 | break; |
774 | case 4: |
775 | mask = ~params->mask; |
776 | ret = regmap_parse_val(map: component->regmap, |
777 | buf: &mask, val: &mask); |
778 | if (ret != 0) |
779 | goto out; |
780 | |
781 | ((u32 *)data)[0] &= mask; |
782 | |
783 | ret = regmap_parse_val(map: component->regmap, |
784 | buf: &val, val: &val); |
785 | if (ret != 0) |
786 | goto out; |
787 | |
788 | ((u32 *)data)[0] |= val; |
789 | break; |
790 | default: |
791 | ret = -EINVAL; |
792 | goto out; |
793 | } |
794 | } |
795 | |
796 | ret = regmap_raw_write(map: component->regmap, reg: params->base, |
797 | val: data, val_len: len); |
798 | |
799 | out: |
800 | kfree(objp: data); |
801 | |
802 | return ret; |
803 | } |
804 | EXPORT_SYMBOL_GPL(snd_soc_bytes_put); |
805 | |
806 | int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol, |
807 | struct snd_ctl_elem_info *ucontrol) |
808 | { |
809 | struct soc_bytes_ext *params = (void *)kcontrol->private_value; |
810 | |
811 | ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES; |
812 | ucontrol->count = params->max; |
813 | |
814 | return 0; |
815 | } |
816 | EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext); |
817 | |
818 | int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag, |
819 | unsigned int size, unsigned int __user *tlv) |
820 | { |
821 | struct soc_bytes_ext *params = (void *)kcontrol->private_value; |
822 | unsigned int count = size < params->max ? size : params->max; |
823 | int ret = -ENXIO; |
824 | |
825 | switch (op_flag) { |
826 | case SNDRV_CTL_TLV_OP_READ: |
827 | if (params->get) |
828 | ret = params->get(kcontrol, tlv, count); |
829 | break; |
830 | case SNDRV_CTL_TLV_OP_WRITE: |
831 | if (params->put) |
832 | ret = params->put(kcontrol, tlv, count); |
833 | break; |
834 | } |
835 | return ret; |
836 | } |
837 | EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback); |
838 | |
839 | /** |
840 | * snd_soc_info_xr_sx - signed multi register info callback |
841 | * @kcontrol: mreg control |
842 | * @uinfo: control element information |
843 | * |
844 | * Callback to provide information of a control that can |
845 | * span multiple codec registers which together |
846 | * forms a single signed value in a MSB/LSB manner. |
847 | * |
848 | * Returns 0 for success. |
849 | */ |
850 | int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, |
851 | struct snd_ctl_elem_info *uinfo) |
852 | { |
853 | struct soc_mreg_control *mc = |
854 | (struct soc_mreg_control *)kcontrol->private_value; |
855 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
856 | uinfo->count = 1; |
857 | uinfo->value.integer.min = mc->min; |
858 | uinfo->value.integer.max = mc->max; |
859 | |
860 | return 0; |
861 | } |
862 | EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx); |
863 | |
864 | /** |
865 | * snd_soc_get_xr_sx - signed multi register get callback |
866 | * @kcontrol: mreg control |
867 | * @ucontrol: control element information |
868 | * |
869 | * Callback to get the value of a control that can span |
870 | * multiple codec registers which together forms a single |
871 | * signed value in a MSB/LSB manner. The control supports |
872 | * specifying total no of bits used to allow for bitfields |
873 | * across the multiple codec registers. |
874 | * |
875 | * Returns 0 for success. |
876 | */ |
877 | int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, |
878 | struct snd_ctl_elem_value *ucontrol) |
879 | { |
880 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
881 | struct soc_mreg_control *mc = |
882 | (struct soc_mreg_control *)kcontrol->private_value; |
883 | unsigned int regbase = mc->regbase; |
884 | unsigned int regcount = mc->regcount; |
885 | unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; |
886 | unsigned int regwmask = (1UL<<regwshift)-1; |
887 | unsigned int invert = mc->invert; |
888 | unsigned long mask = (1UL<<mc->nbits)-1; |
889 | long min = mc->min; |
890 | long max = mc->max; |
891 | long val = 0; |
892 | unsigned int i; |
893 | |
894 | for (i = 0; i < regcount; i++) { |
895 | unsigned int regval = snd_soc_component_read(component, reg: regbase+i); |
896 | val |= (regval & regwmask) << (regwshift*(regcount-i-1)); |
897 | } |
898 | val &= mask; |
899 | if (min < 0 && val > max) |
900 | val |= ~mask; |
901 | if (invert) |
902 | val = max - val; |
903 | ucontrol->value.integer.value[0] = val; |
904 | |
905 | return 0; |
906 | } |
907 | EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx); |
908 | |
909 | /** |
910 | * snd_soc_put_xr_sx - signed multi register get callback |
911 | * @kcontrol: mreg control |
912 | * @ucontrol: control element information |
913 | * |
914 | * Callback to set the value of a control that can span |
915 | * multiple codec registers which together forms a single |
916 | * signed value in a MSB/LSB manner. The control supports |
917 | * specifying total no of bits used to allow for bitfields |
918 | * across the multiple codec registers. |
919 | * |
920 | * Returns 0 for success. |
921 | */ |
922 | int snd_soc_put_xr_sx(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_mreg_control *mc = |
927 | (struct soc_mreg_control *)kcontrol->private_value; |
928 | unsigned int regbase = mc->regbase; |
929 | unsigned int regcount = mc->regcount; |
930 | unsigned int regwshift = component->val_bytes * BITS_PER_BYTE; |
931 | unsigned int regwmask = (1UL<<regwshift)-1; |
932 | unsigned int invert = mc->invert; |
933 | unsigned long mask = (1UL<<mc->nbits)-1; |
934 | long max = mc->max; |
935 | long val = ucontrol->value.integer.value[0]; |
936 | int ret = 0; |
937 | unsigned int i; |
938 | |
939 | if (val < mc->min || val > mc->max) |
940 | return -EINVAL; |
941 | if (invert) |
942 | val = max - val; |
943 | val &= mask; |
944 | for (i = 0; i < regcount; i++) { |
945 | unsigned int regval = (val >> (regwshift*(regcount-i-1))) & regwmask; |
946 | unsigned int regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; |
947 | int err = snd_soc_component_update_bits(component, reg: regbase+i, |
948 | mask: regmask, val: regval); |
949 | if (err < 0) |
950 | return err; |
951 | if (err > 0) |
952 | ret = err; |
953 | } |
954 | |
955 | return ret; |
956 | } |
957 | EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); |
958 | |
959 | /** |
960 | * snd_soc_get_strobe - strobe get callback |
961 | * @kcontrol: mixer control |
962 | * @ucontrol: control element information |
963 | * |
964 | * Callback get the value of a strobe mixer control. |
965 | * |
966 | * Returns 0 for success. |
967 | */ |
968 | int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, |
969 | struct snd_ctl_elem_value *ucontrol) |
970 | { |
971 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
972 | struct soc_mixer_control *mc = |
973 | (struct soc_mixer_control *)kcontrol->private_value; |
974 | unsigned int reg = mc->reg; |
975 | unsigned int shift = mc->shift; |
976 | unsigned int mask = 1 << shift; |
977 | unsigned int invert = mc->invert != 0; |
978 | unsigned int val; |
979 | |
980 | val = snd_soc_component_read(component, reg); |
981 | val &= mask; |
982 | |
983 | if (shift != 0 && val != 0) |
984 | val = val >> shift; |
985 | ucontrol->value.enumerated.item[0] = val ^ invert; |
986 | |
987 | return 0; |
988 | } |
989 | EXPORT_SYMBOL_GPL(snd_soc_get_strobe); |
990 | |
991 | /** |
992 | * snd_soc_put_strobe - strobe put callback |
993 | * @kcontrol: mixer control |
994 | * @ucontrol: control element information |
995 | * |
996 | * Callback strobe a register bit to high then low (or the inverse) |
997 | * in one pass of a single mixer enum control. |
998 | * |
999 | * Returns 1 for success. |
1000 | */ |
1001 | int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, |
1002 | struct snd_ctl_elem_value *ucontrol) |
1003 | { |
1004 | struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); |
1005 | struct soc_mixer_control *mc = |
1006 | (struct soc_mixer_control *)kcontrol->private_value; |
1007 | unsigned int reg = mc->reg; |
1008 | unsigned int shift = mc->shift; |
1009 | unsigned int mask = 1 << shift; |
1010 | unsigned int invert = mc->invert != 0; |
1011 | unsigned int strobe = ucontrol->value.enumerated.item[0] != 0; |
1012 | unsigned int val1 = (strobe ^ invert) ? mask : 0; |
1013 | unsigned int val2 = (strobe ^ invert) ? 0 : mask; |
1014 | int err; |
1015 | |
1016 | err = snd_soc_component_update_bits(component, reg, mask, val: val1); |
1017 | if (err < 0) |
1018 | return err; |
1019 | |
1020 | return snd_soc_component_update_bits(component, reg, mask, val: val2); |
1021 | } |
1022 | EXPORT_SYMBOL_GPL(snd_soc_put_strobe); |
1023 | |