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