1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-ops.c -- Generic ASoC operations
5 // Copyright 2005 Wolfson Microelectronics PLC.
6 // Copyright 2005 Openedhand Ltd.
7 // Copyright (C) 2010 Slimlogic Ltd.
8 // Copyright (C) 2010 Texas Instruments Inc.
10 // Author: Liam Girdwood <lrg@slimlogic.co.uk>
11 // with code, comments and ideas from :-
12 // Richard Purdie <richard@openedhand.com>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/delay.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>
31 * snd_soc_info_enum_double - enumerated double mixer info callback
32 * @kcontrol: mixer control
33 * @uinfo: control element information
35 * Callback to provide information about a double enumerated
38 * Returns 0 for success.
40 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
41 struct snd_ctl_elem_info *uinfo)
43 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
45 return snd_ctl_enum_info(uinfo, e->shift_l == e->shift_r ? 1 : 2,
48 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
51 * snd_soc_get_enum_double - enumerated double mixer get callback
52 * @kcontrol: mixer control
53 * @ucontrol: control element information
55 * Callback to get the value of a double enumerated mixer.
57 * Returns 0 for success.
59 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
60 struct snd_ctl_elem_value *ucontrol)
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;
68 ret = snd_soc_component_read(component, e->reg, ®_val);
71 val = (reg_val >> e->shift_l) & e->mask;
72 item = snd_soc_enum_val_to_item(e, val);
73 ucontrol->value.enumerated.item[0] = item;
74 if (e->shift_l != e->shift_r) {
75 val = (reg_val >> e->shift_r) & e->mask;
76 item = snd_soc_enum_val_to_item(e, val);
77 ucontrol->value.enumerated.item[1] = item;
82 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
85 * snd_soc_put_enum_double - enumerated double mixer put callback
86 * @kcontrol: mixer control
87 * @ucontrol: control element information
89 * Callback to set the value of a double enumerated mixer.
91 * Returns 0 for success.
93 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
94 struct snd_ctl_elem_value *ucontrol)
96 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
97 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
98 unsigned int *item = ucontrol->value.enumerated.item;
102 if (item[0] >= e->items)
104 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
105 mask = e->mask << e->shift_l;
106 if (e->shift_l != e->shift_r) {
107 if (item[1] >= e->items)
109 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
110 mask |= e->mask << e->shift_r;
113 return snd_soc_component_update_bits(component, e->reg, mask, val);
115 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
118 * snd_soc_read_signed - Read a codec register and interpret as signed value
119 * @component: component
120 * @reg: Register to read
121 * @mask: Mask to use after shifting the register value
122 * @shift: Right shift of register value
123 * @sign_bit: Bit that describes if a number is negative or not.
124 * @signed_val: Pointer to where the read value should be stored
126 * This functions reads a codec register. The register value is shifted right
127 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
128 * the given registervalue into a signed integer if sign_bit is non-zero.
130 * Returns 0 on sucess, otherwise an error value
132 static int snd_soc_read_signed(struct snd_soc_component *component,
133 unsigned int reg, unsigned int mask, unsigned int shift,
134 unsigned int sign_bit, int *signed_val)
139 ret = snd_soc_component_read(component, reg, &val);
143 val = (val >> shift) & mask;
150 /* non-negative number */
151 if (!(val & BIT(sign_bit))) {
159 * The register most probably does not contain a full-sized int.
160 * Instead we have an arbitrary number of bits in a signed
161 * representation which has to be translated into a full-sized int.
162 * This is done by filling up all bits above the sign-bit.
164 ret |= ~((int)(BIT(sign_bit) - 1));
172 * snd_soc_info_volsw - single mixer info callback
173 * @kcontrol: mixer control
174 * @uinfo: control element information
176 * Callback to provide information about a single mixer control, or a double
177 * mixer control that spans 2 registers.
179 * Returns 0 for success.
181 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
182 struct snd_ctl_elem_info *uinfo)
184 struct soc_mixer_control *mc =
185 (struct soc_mixer_control *)kcontrol->private_value;
188 if (!mc->platform_max)
189 mc->platform_max = mc->max;
190 platform_max = mc->platform_max;
192 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
193 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
195 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
197 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
198 uinfo->value.integer.min = 0;
199 uinfo->value.integer.max = platform_max - mc->min;
202 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
205 * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls
206 * @kcontrol: mixer control
207 * @uinfo: control element information
209 * Callback to provide information about a single mixer control, or a double
210 * mixer control that spans 2 registers of the SX TLV type. SX TLV controls
211 * have a range that represents both positive and negative values either side
212 * of zero but without a sign bit.
214 * Returns 0 for success.
216 int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol,
217 struct snd_ctl_elem_info *uinfo)
219 struct soc_mixer_control *mc =
220 (struct soc_mixer_control *)kcontrol->private_value;
222 snd_soc_info_volsw(kcontrol, uinfo);
223 /* Max represents the number of levels in an SX control not the
224 * maximum value, so add the minimum value back on
226 uinfo->value.integer.max += mc->min;
230 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx);
233 * snd_soc_get_volsw - single mixer get callback
234 * @kcontrol: mixer control
235 * @ucontrol: control element information
237 * Callback to get the value of a single mixer control, or a double mixer
238 * control that spans 2 registers.
240 * Returns 0 for success.
242 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
243 struct snd_ctl_elem_value *ucontrol)
245 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
246 struct soc_mixer_control *mc =
247 (struct soc_mixer_control *)kcontrol->private_value;
248 unsigned int reg = mc->reg;
249 unsigned int reg2 = mc->rreg;
250 unsigned int shift = mc->shift;
251 unsigned int rshift = mc->rshift;
254 int sign_bit = mc->sign_bit;
255 unsigned int mask = (1 << fls(max)) - 1;
256 unsigned int invert = mc->invert;
261 mask = BIT(sign_bit + 1) - 1;
263 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
267 ucontrol->value.integer.value[0] = val - min;
269 ucontrol->value.integer.value[0] =
270 max - ucontrol->value.integer.value[0];
272 if (snd_soc_volsw_is_stereo(mc)) {
274 ret = snd_soc_read_signed(component, reg, mask, rshift,
277 ret = snd_soc_read_signed(component, reg2, mask, shift,
282 ucontrol->value.integer.value[1] = val - min;
284 ucontrol->value.integer.value[1] =
285 max - ucontrol->value.integer.value[1];
290 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
293 * snd_soc_put_volsw - single mixer put callback
294 * @kcontrol: mixer control
295 * @ucontrol: control element information
297 * Callback to set the value of a single mixer control, or a double mixer
298 * control that spans 2 registers.
300 * Returns 0 for success.
302 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
303 struct snd_ctl_elem_value *ucontrol)
305 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
306 struct soc_mixer_control *mc =
307 (struct soc_mixer_control *)kcontrol->private_value;
308 unsigned int reg = mc->reg;
309 unsigned int reg2 = mc->rreg;
310 unsigned int shift = mc->shift;
311 unsigned int rshift = mc->rshift;
314 unsigned int sign_bit = mc->sign_bit;
315 unsigned int mask = (1 << fls(max)) - 1;
316 unsigned int invert = mc->invert;
318 bool type_2r = false;
319 unsigned int val2 = 0;
320 unsigned int val, val_mask;
323 mask = BIT(sign_bit + 1) - 1;
325 val = ((ucontrol->value.integer.value[0] + min) & mask);
328 val_mask = mask << shift;
330 if (snd_soc_volsw_is_stereo(mc)) {
331 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
335 val_mask |= mask << rshift;
336 val |= val2 << rshift;
338 val2 = val2 << shift;
342 err = snd_soc_component_update_bits(component, reg, val_mask, val);
347 err = snd_soc_component_update_bits(component, reg2, val_mask,
352 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
355 * snd_soc_get_volsw_sx - single mixer get callback
356 * @kcontrol: mixer control
357 * @ucontrol: control element information
359 * Callback to get the value of a single mixer control, or a double mixer
360 * control that spans 2 registers.
362 * Returns 0 for success.
364 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
365 struct snd_ctl_elem_value *ucontrol)
367 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
368 struct soc_mixer_control *mc =
369 (struct soc_mixer_control *)kcontrol->private_value;
370 unsigned int reg = mc->reg;
371 unsigned int reg2 = mc->rreg;
372 unsigned int shift = mc->shift;
373 unsigned int rshift = mc->rshift;
376 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
380 ret = snd_soc_component_read(component, reg, &val);
384 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
386 if (snd_soc_volsw_is_stereo(mc)) {
387 ret = snd_soc_component_read(component, reg2, &val);
391 val = ((val >> rshift) - min) & mask;
392 ucontrol->value.integer.value[1] = val;
397 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
400 * snd_soc_put_volsw_sx - double mixer set callback
401 * @kcontrol: mixer control
402 * @ucontrol: control element information
404 * Callback to set the value of a double mixer control that spans 2 registers.
406 * Returns 0 for success.
408 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
409 struct snd_ctl_elem_value *ucontrol)
411 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
412 struct soc_mixer_control *mc =
413 (struct soc_mixer_control *)kcontrol->private_value;
415 unsigned int reg = mc->reg;
416 unsigned int reg2 = mc->rreg;
417 unsigned int shift = mc->shift;
418 unsigned int rshift = mc->rshift;
421 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
423 unsigned int val, val_mask, val2 = 0;
425 val_mask = mask << shift;
426 val = (ucontrol->value.integer.value[0] + min) & mask;
429 err = snd_soc_component_update_bits(component, reg, val_mask, val);
433 if (snd_soc_volsw_is_stereo(mc)) {
434 val_mask = mask << rshift;
435 val2 = (ucontrol->value.integer.value[1] + min) & mask;
436 val2 = val2 << rshift;
438 err = snd_soc_component_update_bits(component, reg2, val_mask,
443 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
446 * snd_soc_info_volsw_range - single mixer info callback with range.
447 * @kcontrol: mixer control
448 * @uinfo: control element information
450 * Callback to provide information, within a range, about a single
453 * returns 0 for success.
455 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
456 struct snd_ctl_elem_info *uinfo)
458 struct soc_mixer_control *mc =
459 (struct soc_mixer_control *)kcontrol->private_value;
463 if (!mc->platform_max)
464 mc->platform_max = mc->max;
465 platform_max = mc->platform_max;
467 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
468 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
469 uinfo->value.integer.min = 0;
470 uinfo->value.integer.max = platform_max - min;
474 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
477 * snd_soc_put_volsw_range - single mixer put value callback with range.
478 * @kcontrol: mixer control
479 * @ucontrol: control element information
481 * Callback to set the value, within a range, for a single mixer control.
483 * Returns 0 for success.
485 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
486 struct snd_ctl_elem_value *ucontrol)
488 struct soc_mixer_control *mc =
489 (struct soc_mixer_control *)kcontrol->private_value;
490 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
491 unsigned int reg = mc->reg;
492 unsigned int rreg = mc->rreg;
493 unsigned int shift = mc->shift;
496 unsigned int mask = (1 << fls(max)) - 1;
497 unsigned int invert = mc->invert;
498 unsigned int val, val_mask;
502 val = (max - ucontrol->value.integer.value[0]) & mask;
504 val = ((ucontrol->value.integer.value[0] + min) & mask);
505 val_mask = mask << shift;
508 ret = snd_soc_component_update_bits(component, reg, val_mask, val);
512 if (snd_soc_volsw_is_stereo(mc)) {
514 val = (max - ucontrol->value.integer.value[1]) & mask;
516 val = ((ucontrol->value.integer.value[1] + min) & mask);
517 val_mask = mask << shift;
520 ret = snd_soc_component_update_bits(component, rreg, val_mask,
526 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
529 * snd_soc_get_volsw_range - single mixer get callback with range
530 * @kcontrol: mixer control
531 * @ucontrol: control element information
533 * Callback to get the value, within a range, of a single mixer control.
535 * Returns 0 for success.
537 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
538 struct snd_ctl_elem_value *ucontrol)
540 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
541 struct soc_mixer_control *mc =
542 (struct soc_mixer_control *)kcontrol->private_value;
543 unsigned int reg = mc->reg;
544 unsigned int rreg = mc->rreg;
545 unsigned int shift = mc->shift;
548 unsigned int mask = (1 << fls(max)) - 1;
549 unsigned int invert = mc->invert;
553 ret = snd_soc_component_read(component, reg, &val);
557 ucontrol->value.integer.value[0] = (val >> shift) & mask;
559 ucontrol->value.integer.value[0] =
560 max - ucontrol->value.integer.value[0];
562 ucontrol->value.integer.value[0] =
563 ucontrol->value.integer.value[0] - min;
565 if (snd_soc_volsw_is_stereo(mc)) {
566 ret = snd_soc_component_read(component, rreg, &val);
570 ucontrol->value.integer.value[1] = (val >> shift) & mask;
572 ucontrol->value.integer.value[1] =
573 max - ucontrol->value.integer.value[1];
575 ucontrol->value.integer.value[1] =
576 ucontrol->value.integer.value[1] - min;
581 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
584 * snd_soc_limit_volume - Set new limit to an existing volume control.
586 * @card: where to look for the control
587 * @name: Name of the control
588 * @max: new maximum limit
590 * Return 0 for success, else error.
592 int snd_soc_limit_volume(struct snd_soc_card *card,
593 const char *name, int max)
595 struct snd_card *snd_card = card->snd_card;
596 struct snd_kcontrol *kctl;
597 struct soc_mixer_control *mc;
601 /* Sanity check for name and max */
602 if (unlikely(!name || max <= 0))
605 list_for_each_entry(kctl, &snd_card->controls, list) {
606 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
612 mc = (struct soc_mixer_control *)kctl->private_value;
613 if (max <= mc->max) {
614 mc->platform_max = max;
620 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
622 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
623 struct snd_ctl_elem_info *uinfo)
625 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
626 struct soc_bytes *params = (void *)kcontrol->private_value;
628 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
629 uinfo->count = params->num_regs * component->val_bytes;
633 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
635 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
636 struct snd_ctl_elem_value *ucontrol)
638 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
639 struct soc_bytes *params = (void *)kcontrol->private_value;
642 if (component->regmap)
643 ret = regmap_raw_read(component->regmap, params->base,
644 ucontrol->value.bytes.data,
645 params->num_regs * component->val_bytes);
649 /* Hide any masked bytes to ensure consistent data reporting */
650 if (ret == 0 && params->mask) {
651 switch (component->val_bytes) {
653 ucontrol->value.bytes.data[0] &= ~params->mask;
656 ((u16 *)(&ucontrol->value.bytes.data))[0]
657 &= cpu_to_be16(~params->mask);
660 ((u32 *)(&ucontrol->value.bytes.data))[0]
661 &= cpu_to_be32(~params->mask);
670 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
672 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
673 struct snd_ctl_elem_value *ucontrol)
675 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
676 struct soc_bytes *params = (void *)kcontrol->private_value;
678 unsigned int val, mask;
681 if (!component->regmap || !params->num_regs)
684 len = params->num_regs * component->val_bytes;
686 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
691 * If we've got a mask then we need to preserve the register
692 * bits. We shouldn't modify the incoming data so take a
696 ret = regmap_read(component->regmap, params->base, &val);
702 switch (component->val_bytes) {
704 ((u8 *)data)[0] &= ~params->mask;
705 ((u8 *)data)[0] |= val;
708 mask = ~params->mask;
709 ret = regmap_parse_val(component->regmap,
714 ((u16 *)data)[0] &= mask;
716 ret = regmap_parse_val(component->regmap,
721 ((u16 *)data)[0] |= val;
724 mask = ~params->mask;
725 ret = regmap_parse_val(component->regmap,
730 ((u32 *)data)[0] &= mask;
732 ret = regmap_parse_val(component->regmap,
737 ((u32 *)data)[0] |= val;
745 ret = regmap_raw_write(component->regmap, params->base,
753 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
755 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
756 struct snd_ctl_elem_info *ucontrol)
758 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
760 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
761 ucontrol->count = params->max;
765 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
767 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
768 unsigned int size, unsigned int __user *tlv)
770 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
771 unsigned int count = size < params->max ? size : params->max;
775 case SNDRV_CTL_TLV_OP_READ:
777 ret = params->get(kcontrol, tlv, count);
779 case SNDRV_CTL_TLV_OP_WRITE:
781 ret = params->put(kcontrol, tlv, count);
786 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
789 * snd_soc_info_xr_sx - signed multi register info callback
790 * @kcontrol: mreg control
791 * @uinfo: control element information
793 * Callback to provide information of a control that can
794 * span multiple codec registers which together
795 * forms a single signed value in a MSB/LSB manner.
797 * Returns 0 for success.
799 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
800 struct snd_ctl_elem_info *uinfo)
802 struct soc_mreg_control *mc =
803 (struct soc_mreg_control *)kcontrol->private_value;
804 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
806 uinfo->value.integer.min = mc->min;
807 uinfo->value.integer.max = mc->max;
811 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
814 * snd_soc_get_xr_sx - signed multi register get callback
815 * @kcontrol: mreg control
816 * @ucontrol: control element information
818 * Callback to get the value of a control that can span
819 * multiple codec registers which together forms a single
820 * signed value in a MSB/LSB manner. The control supports
821 * specifying total no of bits used to allow for bitfields
822 * across the multiple codec registers.
824 * Returns 0 for success.
826 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
827 struct snd_ctl_elem_value *ucontrol)
829 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
830 struct soc_mreg_control *mc =
831 (struct soc_mreg_control *)kcontrol->private_value;
832 unsigned int regbase = mc->regbase;
833 unsigned int regcount = mc->regcount;
834 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
835 unsigned int regwmask = (1UL<<regwshift)-1;
836 unsigned int invert = mc->invert;
837 unsigned long mask = (1UL<<mc->nbits)-1;
845 for (i = 0; i < regcount; i++) {
846 ret = snd_soc_component_read(component, regbase+i, ®val);
849 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
852 if (min < 0 && val > max)
856 ucontrol->value.integer.value[0] = val;
860 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
863 * snd_soc_put_xr_sx - signed multi register get callback
864 * @kcontrol: mreg control
865 * @ucontrol: control element information
867 * Callback to set the value of a control that can span
868 * multiple codec registers which together forms a single
869 * signed value in a MSB/LSB manner. The control supports
870 * specifying total no of bits used to allow for bitfields
871 * across the multiple codec registers.
873 * Returns 0 for success.
875 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
876 struct snd_ctl_elem_value *ucontrol)
878 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
879 struct soc_mreg_control *mc =
880 (struct soc_mreg_control *)kcontrol->private_value;
881 unsigned int regbase = mc->regbase;
882 unsigned int regcount = mc->regcount;
883 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
884 unsigned int regwmask = (1UL<<regwshift)-1;
885 unsigned int invert = mc->invert;
886 unsigned long mask = (1UL<<mc->nbits)-1;
888 long val = ucontrol->value.integer.value[0];
889 unsigned int i, regval, regmask;
895 for (i = 0; i < regcount; i++) {
896 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
897 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
898 err = snd_soc_component_update_bits(component, regbase+i,
906 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
909 * snd_soc_get_strobe - strobe get callback
910 * @kcontrol: mixer control
911 * @ucontrol: control element information
913 * Callback get the value of a strobe mixer control.
915 * Returns 0 for success.
917 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
918 struct snd_ctl_elem_value *ucontrol)
920 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
921 struct soc_mixer_control *mc =
922 (struct soc_mixer_control *)kcontrol->private_value;
923 unsigned int reg = mc->reg;
924 unsigned int shift = mc->shift;
925 unsigned int mask = 1 << shift;
926 unsigned int invert = mc->invert != 0;
930 ret = snd_soc_component_read(component, reg, &val);
936 if (shift != 0 && val != 0)
938 ucontrol->value.enumerated.item[0] = val ^ invert;
942 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
945 * snd_soc_put_strobe - strobe put callback
946 * @kcontrol: mixer control
947 * @ucontrol: control element information
949 * Callback strobe a register bit to high then low (or the inverse)
950 * in one pass of a single mixer enum control.
952 * Returns 1 for success.
954 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
955 struct snd_ctl_elem_value *ucontrol)
957 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
958 struct soc_mixer_control *mc =
959 (struct soc_mixer_control *)kcontrol->private_value;
960 unsigned int reg = mc->reg;
961 unsigned int shift = mc->shift;
962 unsigned int mask = 1 << shift;
963 unsigned int invert = mc->invert != 0;
964 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
965 unsigned int val1 = (strobe ^ invert) ? mask : 0;
966 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
969 err = snd_soc_component_update_bits(component, reg, mask, val1);
973 return snd_soc_component_update_bits(component, reg, mask, val2);
975 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);