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 interpret 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] + min) & mask);
333 val_mask = mask << shift;
335 if (snd_soc_volsw_is_stereo(mc)) {
336 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
340 val_mask |= mask << rshift;
341 val |= val2 << rshift;
343 val2 = val2 << shift;
347 err = snd_soc_component_update_bits(component, reg, val_mask, val);
352 err = snd_soc_component_update_bits(component, reg2, val_mask,
357 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
360 * snd_soc_get_volsw_sx - single mixer get callback
361 * @kcontrol: mixer control
362 * @ucontrol: control element information
364 * Callback to get the value of a single mixer control, or a double mixer
365 * control that spans 2 registers.
367 * Returns 0 for success.
369 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
370 struct snd_ctl_elem_value *ucontrol)
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;
381 int mask = (1 << (fls(min + max) - 1)) - 1;
385 ret = snd_soc_component_read(component, reg, &val);
389 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
391 if (snd_soc_volsw_is_stereo(mc)) {
392 ret = snd_soc_component_read(component, reg2, &val);
396 val = ((val >> rshift) - min) & mask;
397 ucontrol->value.integer.value[1] = val;
402 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
405 * snd_soc_put_volsw_sx - double mixer set callback
406 * @kcontrol: mixer control
407 * @ucontrol: control element information
409 * Callback to set the value of a double mixer control that spans 2 registers.
411 * Returns 0 for success.
413 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
414 struct snd_ctl_elem_value *ucontrol)
416 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
417 struct soc_mixer_control *mc =
418 (struct soc_mixer_control *)kcontrol->private_value;
420 unsigned int reg = mc->reg;
421 unsigned int reg2 = mc->rreg;
422 unsigned int shift = mc->shift;
423 unsigned int rshift = mc->rshift;
426 int mask = (1 << (fls(min + max) - 1)) - 1;
428 unsigned int val, val_mask, val2 = 0;
430 val_mask = mask << shift;
431 val = (ucontrol->value.integer.value[0] + min) & mask;
434 err = snd_soc_component_update_bits(component, reg, val_mask, val);
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;
443 err = snd_soc_component_update_bits(component, reg2, val_mask,
448 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
451 * snd_soc_info_volsw_range - single mixer info callback with range.
452 * @kcontrol: mixer control
453 * @uinfo: control element information
455 * Callback to provide information, within a range, about a single
458 * returns 0 for success.
460 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
461 struct snd_ctl_elem_info *uinfo)
463 struct soc_mixer_control *mc =
464 (struct soc_mixer_control *)kcontrol->private_value;
468 if (!mc->platform_max)
469 mc->platform_max = mc->max;
470 platform_max = mc->platform_max;
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;
479 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
482 * snd_soc_put_volsw_range - single mixer put value callback with range.
483 * @kcontrol: mixer control
484 * @ucontrol: control element information
486 * Callback to set the value, within a range, for a single mixer control.
488 * Returns 0 for success.
490 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
491 struct snd_ctl_elem_value *ucontrol)
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;
501 unsigned int mask = (1 << fls(max)) - 1;
502 unsigned int invert = mc->invert;
503 unsigned int val, val_mask;
507 val = (max - ucontrol->value.integer.value[0]) & mask;
509 val = ((ucontrol->value.integer.value[0] + min) & mask);
510 val_mask = mask << shift;
513 ret = snd_soc_component_update_bits(component, reg, val_mask, val);
517 if (snd_soc_volsw_is_stereo(mc)) {
519 val = (max - ucontrol->value.integer.value[1]) & mask;
521 val = ((ucontrol->value.integer.value[1] + min) & mask);
522 val_mask = mask << shift;
525 ret = snd_soc_component_update_bits(component, rreg, val_mask,
531 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
534 * snd_soc_get_volsw_range - single mixer get callback with range
535 * @kcontrol: mixer control
536 * @ucontrol: control element information
538 * Callback to get the value, within a range, of a single mixer control.
540 * Returns 0 for success.
542 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
543 struct snd_ctl_elem_value *ucontrol)
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;
553 unsigned int mask = (1 << fls(max)) - 1;
554 unsigned int invert = mc->invert;
558 ret = snd_soc_component_read(component, reg, &val);
562 ucontrol->value.integer.value[0] = (val >> shift) & mask;
564 ucontrol->value.integer.value[0] =
565 max - ucontrol->value.integer.value[0];
567 ucontrol->value.integer.value[0] =
568 ucontrol->value.integer.value[0] - min;
570 if (snd_soc_volsw_is_stereo(mc)) {
571 ret = snd_soc_component_read(component, rreg, &val);
575 ucontrol->value.integer.value[1] = (val >> shift) & mask;
577 ucontrol->value.integer.value[1] =
578 max - ucontrol->value.integer.value[1];
580 ucontrol->value.integer.value[1] =
581 ucontrol->value.integer.value[1] - min;
586 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
589 * snd_soc_limit_volume - Set new limit to an existing volume control.
591 * @card: where to look for the control
592 * @name: Name of the control
593 * @max: new maximum limit
595 * Return 0 for success, else error.
597 int snd_soc_limit_volume(struct snd_soc_card *card,
598 const char *name, int max)
600 struct snd_card *snd_card = card->snd_card;
601 struct snd_kcontrol *kctl;
602 struct soc_mixer_control *mc;
606 /* Sanity check for name and max */
607 if (unlikely(!name || max <= 0))
610 list_for_each_entry(kctl, &snd_card->controls, list) {
611 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
617 mc = (struct soc_mixer_control *)kctl->private_value;
618 if (max <= mc->max) {
619 mc->platform_max = max;
625 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
627 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
628 struct snd_ctl_elem_info *uinfo)
630 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
631 struct soc_bytes *params = (void *)kcontrol->private_value;
633 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
634 uinfo->count = params->num_regs * component->val_bytes;
638 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
640 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
641 struct snd_ctl_elem_value *ucontrol)
643 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
644 struct soc_bytes *params = (void *)kcontrol->private_value;
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);
654 /* Hide any masked bytes to ensure consistent data reporting */
655 if (ret == 0 && params->mask) {
656 switch (component->val_bytes) {
658 ucontrol->value.bytes.data[0] &= ~params->mask;
661 ((u16 *)(&ucontrol->value.bytes.data))[0]
662 &= cpu_to_be16(~params->mask);
665 ((u32 *)(&ucontrol->value.bytes.data))[0]
666 &= cpu_to_be32(~params->mask);
675 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
677 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
678 struct snd_ctl_elem_value *ucontrol)
680 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
681 struct soc_bytes *params = (void *)kcontrol->private_value;
683 unsigned int val, mask;
686 if (!component->regmap || !params->num_regs)
689 len = params->num_regs * component->val_bytes;
691 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
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
701 ret = regmap_read(component->regmap, params->base, &val);
707 switch (component->val_bytes) {
709 ((u8 *)data)[0] &= ~params->mask;
710 ((u8 *)data)[0] |= val;
713 mask = ~params->mask;
714 ret = regmap_parse_val(component->regmap,
719 ((u16 *)data)[0] &= mask;
721 ret = regmap_parse_val(component->regmap,
726 ((u16 *)data)[0] |= val;
729 mask = ~params->mask;
730 ret = regmap_parse_val(component->regmap,
735 ((u32 *)data)[0] &= mask;
737 ret = regmap_parse_val(component->regmap,
742 ((u32 *)data)[0] |= val;
750 ret = regmap_raw_write(component->regmap, params->base,
758 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
760 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
761 struct snd_ctl_elem_info *ucontrol)
763 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
765 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
766 ucontrol->count = params->max;
770 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
772 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
773 unsigned int size, unsigned int __user *tlv)
775 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
776 unsigned int count = size < params->max ? size : params->max;
780 case SNDRV_CTL_TLV_OP_READ:
782 ret = params->get(kcontrol, tlv, count);
784 case SNDRV_CTL_TLV_OP_WRITE:
786 ret = params->put(kcontrol, tlv, count);
791 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
794 * snd_soc_info_xr_sx - signed multi register info callback
795 * @kcontrol: mreg control
796 * @uinfo: control element information
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.
802 * Returns 0 for success.
804 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
805 struct snd_ctl_elem_info *uinfo)
807 struct soc_mreg_control *mc =
808 (struct soc_mreg_control *)kcontrol->private_value;
809 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
811 uinfo->value.integer.min = mc->min;
812 uinfo->value.integer.max = mc->max;
816 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
819 * snd_soc_get_xr_sx - signed multi register get callback
820 * @kcontrol: mreg control
821 * @ucontrol: control element information
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.
829 * Returns 0 for success.
831 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
832 struct snd_ctl_elem_value *ucontrol)
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;
850 for (i = 0; i < regcount; i++) {
851 ret = snd_soc_component_read(component, regbase+i, ®val);
854 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
857 if (min < 0 && val > max)
861 ucontrol->value.integer.value[0] = val;
865 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
868 * snd_soc_put_xr_sx - signed multi register get callback
869 * @kcontrol: mreg control
870 * @ucontrol: control element information
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.
878 * Returns 0 for success.
880 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
881 struct snd_ctl_elem_value *ucontrol)
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;
893 long val = ucontrol->value.integer.value[0];
894 unsigned int i, regval, regmask;
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,
911 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
914 * snd_soc_get_strobe - strobe get callback
915 * @kcontrol: mixer control
916 * @ucontrol: control element information
918 * Callback get the value of a strobe mixer control.
920 * Returns 0 for success.
922 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
923 struct snd_ctl_elem_value *ucontrol)
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;
935 ret = snd_soc_component_read(component, reg, &val);
941 if (shift != 0 && val != 0)
943 ucontrol->value.enumerated.item[0] = val ^ invert;
947 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
950 * snd_soc_put_strobe - strobe put callback
951 * @kcontrol: mixer control
952 * @ucontrol: control element information
954 * Callback strobe a register bit to high then low (or the inverse)
955 * in one pass of a single mixer enum control.
957 * Returns 1 for success.
959 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
960 struct snd_ctl_elem_value *ucontrol)
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;
974 err = snd_soc_component_update_bits(component, reg, mask, val1);
978 return snd_soc_component_update_bits(component, reg, mask, val2);
980 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);