2 * soc-ops.c -- Generic ASoC operations
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
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.
19 #include <linux/module.h>
20 #include <linux/moduleparam.h>
21 #include <linux/init.h>
22 #include <linux/delay.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>
36 * snd_soc_info_enum_double - enumerated double mixer info callback
37 * @kcontrol: mixer control
38 * @uinfo: control element information
40 * Callback to provide information about a double enumerated
43 * Returns 0 for success.
45 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
46 struct snd_ctl_elem_info *uinfo)
48 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
50 return snd_ctl_enum_info(uinfo, e->shift_l == e->shift_r ? 1 : 2,
53 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
56 * snd_soc_get_enum_double - enumerated double mixer get callback
57 * @kcontrol: mixer control
58 * @ucontrol: control element information
60 * Callback to get the value of a double enumerated mixer.
62 * Returns 0 for success.
64 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
65 struct snd_ctl_elem_value *ucontrol)
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;
73 ret = snd_soc_component_read(component, e->reg, ®_val);
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) {
80 val = (reg_val >> e->shift_r) & e->mask;
81 item = snd_soc_enum_val_to_item(e, val);
82 ucontrol->value.enumerated.item[1] = item;
87 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
90 * snd_soc_put_enum_double - enumerated double mixer put callback
91 * @kcontrol: mixer control
92 * @ucontrol: control element information
94 * Callback to set the value of a double enumerated mixer.
96 * Returns 0 for success.
98 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
99 struct snd_ctl_elem_value *ucontrol)
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;
107 if (item[0] >= e->items)
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)
114 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
115 mask |= e->mask << e->shift_r;
118 return snd_soc_component_update_bits(component, e->reg, mask, val);
120 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
123 * snd_soc_read_signed - Read a codec register and interprete as signed value
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
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.
135 * Returns 0 on sucess, otherwise an error value
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)
144 ret = snd_soc_component_read(component, reg, &val);
148 val = (val >> shift) & mask;
155 /* non-negative number */
156 if (!(val & BIT(sign_bit))) {
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.
169 ret |= ~((int)(BIT(sign_bit) - 1));
177 * snd_soc_info_volsw - single mixer info callback
178 * @kcontrol: mixer control
179 * @uinfo: control element information
181 * Callback to provide information about a single mixer control, or a double
182 * mixer control that spans 2 registers.
184 * Returns 0 for success.
186 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
187 struct snd_ctl_elem_info *uinfo)
189 struct soc_mixer_control *mc =
190 (struct soc_mixer_control *)kcontrol->private_value;
193 if (!mc->platform_max)
194 mc->platform_max = mc->max;
195 platform_max = mc->platform_max;
197 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
198 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
200 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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;
207 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
210 * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls
211 * @kcontrol: mixer control
212 * @uinfo: control element information
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.
219 * Returns 0 for success.
221 int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol,
222 struct snd_ctl_elem_info *uinfo)
224 struct soc_mixer_control *mc =
225 (struct soc_mixer_control *)kcontrol->private_value;
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
231 uinfo->value.integer.max += mc->min;
235 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx);
238 * snd_soc_get_volsw - single mixer get callback
239 * @kcontrol: mixer control
240 * @ucontrol: control element information
242 * Callback to get the value of a single mixer control, or a double mixer
243 * control that spans 2 registers.
245 * Returns 0 for success.
247 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
248 struct snd_ctl_elem_value *ucontrol)
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;
259 int sign_bit = mc->sign_bit;
260 unsigned int mask = (1 << fls(max)) - 1;
261 unsigned int invert = mc->invert;
266 mask = BIT(sign_bit + 1) - 1;
268 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
272 ucontrol->value.integer.value[0] = val - min;
274 ucontrol->value.integer.value[0] =
275 max - ucontrol->value.integer.value[0];
277 if (snd_soc_volsw_is_stereo(mc)) {
279 ret = snd_soc_read_signed(component, reg, mask, rshift,
282 ret = snd_soc_read_signed(component, reg2, mask, shift,
287 ucontrol->value.integer.value[1] = val - min;
289 ucontrol->value.integer.value[1] =
290 max - ucontrol->value.integer.value[1];
295 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
298 * snd_soc_put_volsw - single mixer put callback
299 * @kcontrol: mixer control
300 * @ucontrol: control element information
302 * Callback to set the value of a single mixer control, or a double mixer
303 * control that spans 2 registers.
305 * Returns 0 for success.
307 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
308 struct snd_ctl_elem_value *ucontrol)
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;
319 unsigned int sign_bit = mc->sign_bit;
320 unsigned int mask = (1 << fls(max)) - 1;
321 unsigned int invert = mc->invert;
323 bool type_2r = false;
324 unsigned int val2 = 0;
325 unsigned int val, val_mask;
328 mask = BIT(sign_bit + 1) - 1;
330 val = ucontrol->value.integer.value[0];
331 if (mc->platform_max && ((int)val + min) > mc->platform_max)
337 val = (val + min) & mask;
340 val_mask = mask << shift;
342 if (snd_soc_volsw_is_stereo(mc)) {
343 val2 = ucontrol->value.integer.value[1];
344 if (mc->platform_max && ((int)val2 + min) > mc->platform_max)
346 if (val2 > max - min)
350 val2 = (val2 + min) & mask;
354 val_mask |= mask << rshift;
355 val |= val2 << rshift;
357 val2 = val2 << shift;
361 err = snd_soc_component_update_bits(component, reg, val_mask, val);
367 err = snd_soc_component_update_bits(component, reg2, val_mask,
369 /* Don't discard any error code or drop change flag */
370 if (ret == 0 || err < 0) {
377 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
380 * snd_soc_get_volsw_sx - single mixer get callback
381 * @kcontrol: mixer control
382 * @ucontrol: control element information
384 * Callback to get the value of a single mixer control, or a double mixer
385 * control that spans 2 registers.
387 * Returns 0 for success.
389 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
390 struct snd_ctl_elem_value *ucontrol)
392 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
393 struct soc_mixer_control *mc =
394 (struct soc_mixer_control *)kcontrol->private_value;
395 unsigned int reg = mc->reg;
396 unsigned int reg2 = mc->rreg;
397 unsigned int shift = mc->shift;
398 unsigned int rshift = mc->rshift;
401 int mask = (1 << (fls(min + max) - 1)) - 1;
405 ret = snd_soc_component_read(component, reg, &val);
409 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
411 if (snd_soc_volsw_is_stereo(mc)) {
412 ret = snd_soc_component_read(component, reg2, &val);
416 val = ((val >> rshift) - min) & mask;
417 ucontrol->value.integer.value[1] = val;
422 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
425 * snd_soc_put_volsw_sx - double mixer set callback
426 * @kcontrol: mixer control
427 * @ucontrol: control element information
429 * Callback to set the value of a double mixer control that spans 2 registers.
431 * Returns 0 for success.
433 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
434 struct snd_ctl_elem_value *ucontrol)
436 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
437 struct soc_mixer_control *mc =
438 (struct soc_mixer_control *)kcontrol->private_value;
440 unsigned int reg = mc->reg;
441 unsigned int reg2 = mc->rreg;
442 unsigned int shift = mc->shift;
443 unsigned int rshift = mc->rshift;
446 int mask = (1 << (fls(min + max) - 1)) - 1;
448 unsigned int val, val_mask, val2 = 0;
450 val = ucontrol->value.integer.value[0];
451 if (mc->platform_max && val > mc->platform_max)
457 val_mask = mask << shift;
458 val = (val + min) & mask;
461 err = snd_soc_component_update_bits(component, reg, val_mask, val);
465 if (snd_soc_volsw_is_stereo(mc)) {
466 val_mask = mask << rshift;
467 val2 = (ucontrol->value.integer.value[1] + min) & mask;
468 val2 = val2 << rshift;
470 err = snd_soc_component_update_bits(component, reg2, val_mask,
475 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
478 * snd_soc_info_volsw_range - single mixer info callback with range.
479 * @kcontrol: mixer control
480 * @uinfo: control element information
482 * Callback to provide information, within a range, about a single
485 * returns 0 for success.
487 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
488 struct snd_ctl_elem_info *uinfo)
490 struct soc_mixer_control *mc =
491 (struct soc_mixer_control *)kcontrol->private_value;
495 if (!mc->platform_max)
496 mc->platform_max = mc->max;
497 platform_max = mc->platform_max;
499 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
500 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
501 uinfo->value.integer.min = 0;
502 uinfo->value.integer.max = platform_max - min;
506 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
509 * snd_soc_put_volsw_range - single mixer put value callback with range.
510 * @kcontrol: mixer control
511 * @ucontrol: control element information
513 * Callback to set the value, within a range, for a single mixer control.
515 * Returns 0 for success.
517 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
518 struct snd_ctl_elem_value *ucontrol)
520 struct soc_mixer_control *mc =
521 (struct soc_mixer_control *)kcontrol->private_value;
522 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
523 unsigned int reg = mc->reg;
524 unsigned int rreg = mc->rreg;
525 unsigned int shift = mc->shift;
528 unsigned int mask = (1 << fls(max)) - 1;
529 unsigned int invert = mc->invert;
530 unsigned int val, val_mask;
533 tmp = ucontrol->value.integer.value[0];
536 if (mc->platform_max && tmp > mc->platform_max)
538 if (tmp > mc->max - mc->min)
542 val = (max - ucontrol->value.integer.value[0]) & mask;
544 val = ((ucontrol->value.integer.value[0] + min) & mask);
545 val_mask = mask << shift;
548 err = snd_soc_component_update_bits(component, reg, val_mask, val);
553 if (snd_soc_volsw_is_stereo(mc)) {
554 tmp = ucontrol->value.integer.value[1];
557 if (mc->platform_max && tmp > mc->platform_max)
559 if (tmp > mc->max - mc->min)
563 val = (max - ucontrol->value.integer.value[1]) & mask;
565 val = ((ucontrol->value.integer.value[1] + min) & mask);
566 val_mask = mask << shift;
569 err = snd_soc_component_update_bits(component, rreg, val_mask,
571 /* Don't discard any error code or drop change flag */
572 if (ret == 0 || err < 0) {
579 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
582 * snd_soc_get_volsw_range - single mixer get callback with range
583 * @kcontrol: mixer control
584 * @ucontrol: control element information
586 * Callback to get the value, within a range, of a single mixer control.
588 * Returns 0 for success.
590 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
591 struct snd_ctl_elem_value *ucontrol)
593 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
594 struct soc_mixer_control *mc =
595 (struct soc_mixer_control *)kcontrol->private_value;
596 unsigned int reg = mc->reg;
597 unsigned int rreg = mc->rreg;
598 unsigned int shift = mc->shift;
601 unsigned int mask = (1 << fls(max)) - 1;
602 unsigned int invert = mc->invert;
606 ret = snd_soc_component_read(component, reg, &val);
610 ucontrol->value.integer.value[0] = (val >> shift) & mask;
612 ucontrol->value.integer.value[0] =
613 max - ucontrol->value.integer.value[0];
615 ucontrol->value.integer.value[0] =
616 ucontrol->value.integer.value[0] - min;
618 if (snd_soc_volsw_is_stereo(mc)) {
619 ret = snd_soc_component_read(component, rreg, &val);
623 ucontrol->value.integer.value[1] = (val >> shift) & mask;
625 ucontrol->value.integer.value[1] =
626 max - ucontrol->value.integer.value[1];
628 ucontrol->value.integer.value[1] =
629 ucontrol->value.integer.value[1] - min;
634 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
637 * snd_soc_limit_volume - Set new limit to an existing volume control.
639 * @card: where to look for the control
640 * @name: Name of the control
641 * @max: new maximum limit
643 * Return 0 for success, else error.
645 int snd_soc_limit_volume(struct snd_soc_card *card,
646 const char *name, int max)
648 struct snd_card *snd_card = card->snd_card;
649 struct snd_kcontrol *kctl;
650 struct soc_mixer_control *mc;
654 /* Sanity check for name and max */
655 if (unlikely(!name || max <= 0))
658 list_for_each_entry(kctl, &snd_card->controls, list) {
659 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
665 mc = (struct soc_mixer_control *)kctl->private_value;
666 if (max <= mc->max) {
667 mc->platform_max = max;
673 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
675 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
676 struct snd_ctl_elem_info *uinfo)
678 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
679 struct soc_bytes *params = (void *)kcontrol->private_value;
681 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
682 uinfo->count = params->num_regs * component->val_bytes;
686 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
688 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
689 struct snd_ctl_elem_value *ucontrol)
691 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
692 struct soc_bytes *params = (void *)kcontrol->private_value;
695 if (component->regmap)
696 ret = regmap_raw_read(component->regmap, params->base,
697 ucontrol->value.bytes.data,
698 params->num_regs * component->val_bytes);
702 /* Hide any masked bytes to ensure consistent data reporting */
703 if (ret == 0 && params->mask) {
704 switch (component->val_bytes) {
706 ucontrol->value.bytes.data[0] &= ~params->mask;
709 ((u16 *)(&ucontrol->value.bytes.data))[0]
710 &= cpu_to_be16(~params->mask);
713 ((u32 *)(&ucontrol->value.bytes.data))[0]
714 &= cpu_to_be32(~params->mask);
723 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
725 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
726 struct snd_ctl_elem_value *ucontrol)
728 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
729 struct soc_bytes *params = (void *)kcontrol->private_value;
731 unsigned int val, mask;
734 if (!component->regmap || !params->num_regs)
737 len = params->num_regs * component->val_bytes;
739 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
744 * If we've got a mask then we need to preserve the register
745 * bits. We shouldn't modify the incoming data so take a
749 ret = regmap_read(component->regmap, params->base, &val);
755 switch (component->val_bytes) {
757 ((u8 *)data)[0] &= ~params->mask;
758 ((u8 *)data)[0] |= val;
761 mask = ~params->mask;
762 ret = regmap_parse_val(component->regmap,
767 ((u16 *)data)[0] &= mask;
769 ret = regmap_parse_val(component->regmap,
774 ((u16 *)data)[0] |= val;
777 mask = ~params->mask;
778 ret = regmap_parse_val(component->regmap,
783 ((u32 *)data)[0] &= mask;
785 ret = regmap_parse_val(component->regmap,
790 ((u32 *)data)[0] |= val;
798 ret = regmap_raw_write(component->regmap, params->base,
806 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
808 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
809 struct snd_ctl_elem_info *ucontrol)
811 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
813 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
814 ucontrol->count = params->max;
818 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
820 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
821 unsigned int size, unsigned int __user *tlv)
823 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
824 unsigned int count = size < params->max ? size : params->max;
828 case SNDRV_CTL_TLV_OP_READ:
830 ret = params->get(kcontrol, tlv, count);
832 case SNDRV_CTL_TLV_OP_WRITE:
834 ret = params->put(kcontrol, tlv, count);
839 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
842 * snd_soc_info_xr_sx - signed multi register info callback
843 * @kcontrol: mreg control
844 * @uinfo: control element information
846 * Callback to provide information of a control that can
847 * span multiple codec registers which together
848 * forms a single signed value in a MSB/LSB manner.
850 * Returns 0 for success.
852 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
853 struct snd_ctl_elem_info *uinfo)
855 struct soc_mreg_control *mc =
856 (struct soc_mreg_control *)kcontrol->private_value;
857 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
859 uinfo->value.integer.min = mc->min;
860 uinfo->value.integer.max = mc->max;
864 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
867 * snd_soc_get_xr_sx - signed multi register get callback
868 * @kcontrol: mreg control
869 * @ucontrol: control element information
871 * Callback to get the value of a control that can span
872 * multiple codec registers which together forms a single
873 * signed value in a MSB/LSB manner. The control supports
874 * specifying total no of bits used to allow for bitfields
875 * across the multiple codec registers.
877 * Returns 0 for success.
879 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
880 struct snd_ctl_elem_value *ucontrol)
882 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
883 struct soc_mreg_control *mc =
884 (struct soc_mreg_control *)kcontrol->private_value;
885 unsigned int regbase = mc->regbase;
886 unsigned int regcount = mc->regcount;
887 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
888 unsigned int regwmask = (1UL<<regwshift)-1;
889 unsigned int invert = mc->invert;
890 unsigned long mask = (1UL<<mc->nbits)-1;
898 for (i = 0; i < regcount; i++) {
899 ret = snd_soc_component_read(component, regbase+i, ®val);
902 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
905 if (min < 0 && val > max)
909 ucontrol->value.integer.value[0] = val;
913 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
916 * snd_soc_put_xr_sx - signed multi register get callback
917 * @kcontrol: mreg control
918 * @ucontrol: control element information
920 * Callback to set the value of a control that can span
921 * multiple codec registers which together forms a single
922 * signed value in a MSB/LSB manner. The control supports
923 * specifying total no of bits used to allow for bitfields
924 * across the multiple codec registers.
926 * Returns 0 for success.
928 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
929 struct snd_ctl_elem_value *ucontrol)
931 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
932 struct soc_mreg_control *mc =
933 (struct soc_mreg_control *)kcontrol->private_value;
934 unsigned int regbase = mc->regbase;
935 unsigned int regcount = mc->regcount;
936 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
937 unsigned int regwmask = (1UL<<regwshift)-1;
938 unsigned int invert = mc->invert;
939 unsigned long mask = (1UL<<mc->nbits)-1;
941 long val = ucontrol->value.integer.value[0];
942 unsigned int i, regval, regmask;
945 if (val < mc->min || val > mc->max)
950 for (i = 0; i < regcount; i++) {
951 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
952 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
953 err = snd_soc_component_update_bits(component, regbase+i,
961 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
964 * snd_soc_get_strobe - strobe get callback
965 * @kcontrol: mixer control
966 * @ucontrol: control element information
968 * Callback get the value of a strobe mixer control.
970 * Returns 0 for success.
972 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
973 struct snd_ctl_elem_value *ucontrol)
975 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
976 struct soc_mixer_control *mc =
977 (struct soc_mixer_control *)kcontrol->private_value;
978 unsigned int reg = mc->reg;
979 unsigned int shift = mc->shift;
980 unsigned int mask = 1 << shift;
981 unsigned int invert = mc->invert != 0;
985 ret = snd_soc_component_read(component, reg, &val);
991 if (shift != 0 && val != 0)
993 ucontrol->value.enumerated.item[0] = val ^ invert;
997 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
1000 * snd_soc_put_strobe - strobe put callback
1001 * @kcontrol: mixer control
1002 * @ucontrol: control element information
1004 * Callback strobe a register bit to high then low (or the inverse)
1005 * in one pass of a single mixer enum control.
1007 * Returns 1 for success.
1009 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
1010 struct snd_ctl_elem_value *ucontrol)
1012 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1013 struct soc_mixer_control *mc =
1014 (struct soc_mixer_control *)kcontrol->private_value;
1015 unsigned int reg = mc->reg;
1016 unsigned int shift = mc->shift;
1017 unsigned int mask = 1 << shift;
1018 unsigned int invert = mc->invert != 0;
1019 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
1020 unsigned int val1 = (strobe ^ invert) ? mask : 0;
1021 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
1024 err = snd_soc_component_update_bits(component, reg, mask, val1);
1028 return snd_soc_component_update_bits(component, reg, mask, val2);
1030 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);