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;
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;
79 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
82 * snd_soc_put_enum_double - enumerated double mixer put callback
83 * @kcontrol: mixer control
84 * @ucontrol: control element information
86 * Callback to set the value of a double enumerated mixer.
88 * Returns 0 for success.
90 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
91 struct snd_ctl_elem_value *ucontrol)
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;
99 if (item[0] >= e->items)
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)
106 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
107 mask |= e->mask << e->shift_r;
110 return snd_soc_component_update_bits(component, e->reg, mask, val);
112 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
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
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.
127 * Returns 0 on sucess, otherwise an error value
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)
136 val = snd_soc_component_read(component, reg);
137 val = (val >> shift) & mask;
144 /* non-negative number */
145 if (!(val & BIT(sign_bit))) {
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.
158 ret |= ~((int)(BIT(sign_bit) - 1));
166 * snd_soc_info_volsw - single mixer info callback
167 * @kcontrol: mixer control
168 * @uinfo: control element information
170 * Callback to provide information about a single mixer control, or a double
171 * mixer control that spans 2 registers.
173 * Returns 0 for success.
175 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
176 struct snd_ctl_elem_info *uinfo)
178 struct soc_mixer_control *mc =
179 (struct soc_mixer_control *)kcontrol->private_value;
182 if (!mc->platform_max)
183 mc->platform_max = mc->max;
184 platform_max = mc->platform_max;
186 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
187 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
189 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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;
196 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
199 * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls
200 * @kcontrol: mixer control
201 * @uinfo: control element information
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.
208 * Returns 0 for success.
210 int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol,
211 struct snd_ctl_elem_info *uinfo)
213 struct soc_mixer_control *mc =
214 (struct soc_mixer_control *)kcontrol->private_value;
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
220 uinfo->value.integer.max += mc->min;
224 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx);
227 * snd_soc_get_volsw - single mixer get callback
228 * @kcontrol: mixer control
229 * @ucontrol: control element information
231 * Callback to get the value of a single mixer control, or a double mixer
232 * control that spans 2 registers.
234 * Returns 0 for success.
236 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
237 struct snd_ctl_elem_value *ucontrol)
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;
248 int sign_bit = mc->sign_bit;
249 unsigned int mask = (1 << fls(max)) - 1;
250 unsigned int invert = mc->invert;
255 mask = BIT(sign_bit + 1) - 1;
257 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
261 ucontrol->value.integer.value[0] = val - min;
263 ucontrol->value.integer.value[0] =
264 max - ucontrol->value.integer.value[0];
266 if (snd_soc_volsw_is_stereo(mc)) {
268 ret = snd_soc_read_signed(component, reg, mask, rshift,
271 ret = snd_soc_read_signed(component, reg2, mask, shift,
276 ucontrol->value.integer.value[1] = val - min;
278 ucontrol->value.integer.value[1] =
279 max - ucontrol->value.integer.value[1];
284 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
287 * snd_soc_put_volsw - single mixer put callback
288 * @kcontrol: mixer control
289 * @ucontrol: control element information
291 * Callback to set the value of a single mixer control, or a double mixer
292 * control that spans 2 registers.
294 * Returns 0 for success.
296 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
297 struct snd_ctl_elem_value *ucontrol)
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;
308 unsigned int sign_bit = mc->sign_bit;
309 unsigned int mask = (1 << fls(max)) - 1;
310 unsigned int invert = mc->invert;
312 bool type_2r = false;
313 unsigned int val2 = 0;
314 unsigned int val, val_mask;
317 mask = BIT(sign_bit + 1) - 1;
319 val = ((ucontrol->value.integer.value[0] + min) & mask);
322 val_mask = mask << shift;
324 if (snd_soc_volsw_is_stereo(mc)) {
325 val2 = ((ucontrol->value.integer.value[1] + min) & mask);
329 val_mask |= mask << rshift;
330 val |= val2 << rshift;
332 val2 = val2 << shift;
336 err = snd_soc_component_update_bits(component, reg, val_mask, val);
341 err = snd_soc_component_update_bits(component, reg2, val_mask,
346 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
349 * snd_soc_get_volsw_sx - single mixer get callback
350 * @kcontrol: mixer control
351 * @ucontrol: control element information
353 * Callback to get the value of a single mixer control, or a double mixer
354 * control that spans 2 registers.
356 * Returns 0 for success.
358 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
359 struct snd_ctl_elem_value *ucontrol)
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;
370 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
373 val = snd_soc_component_read(component, reg);
374 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
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;
384 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
387 * snd_soc_put_volsw_sx - double mixer set callback
388 * @kcontrol: mixer control
389 * @ucontrol: control element information
391 * Callback to set the value of a double mixer control that spans 2 registers.
393 * Returns 0 for success.
395 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
396 struct snd_ctl_elem_value *ucontrol)
398 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
399 struct soc_mixer_control *mc =
400 (struct soc_mixer_control *)kcontrol->private_value;
402 unsigned int reg = mc->reg;
403 unsigned int reg2 = mc->rreg;
404 unsigned int shift = mc->shift;
405 unsigned int rshift = mc->rshift;
408 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
410 unsigned int val, val_mask;
412 val_mask = mask << shift;
413 val = (ucontrol->value.integer.value[0] + min) & mask;
416 err = snd_soc_component_update_bits(component, reg, val_mask, val);
420 if (snd_soc_volsw_is_stereo(mc)) {
423 val_mask = mask << rshift;
424 val2 = (ucontrol->value.integer.value[1] + min) & mask;
425 val2 = val2 << rshift;
427 err = snd_soc_component_update_bits(component, reg2, val_mask,
432 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
435 * snd_soc_info_volsw_range - single mixer info callback with range.
436 * @kcontrol: mixer control
437 * @uinfo: control element information
439 * Callback to provide information, within a range, about a single
442 * returns 0 for success.
444 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
445 struct snd_ctl_elem_info *uinfo)
447 struct soc_mixer_control *mc =
448 (struct soc_mixer_control *)kcontrol->private_value;
452 if (!mc->platform_max)
453 mc->platform_max = mc->max;
454 platform_max = mc->platform_max;
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;
463 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
466 * snd_soc_put_volsw_range - single mixer put value callback with range.
467 * @kcontrol: mixer control
468 * @ucontrol: control element information
470 * Callback to set the value, within a range, for a single mixer control.
472 * Returns 0 for success.
474 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
475 struct snd_ctl_elem_value *ucontrol)
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;
485 unsigned int mask = (1 << fls(max)) - 1;
486 unsigned int invert = mc->invert;
487 unsigned int val, val_mask;
491 val = (max - ucontrol->value.integer.value[0]) & mask;
493 val = ((ucontrol->value.integer.value[0] + min) & mask);
494 val_mask = mask << shift;
497 ret = snd_soc_component_update_bits(component, reg, val_mask, val);
501 if (snd_soc_volsw_is_stereo(mc)) {
503 val = (max - ucontrol->value.integer.value[1]) & mask;
505 val = ((ucontrol->value.integer.value[1] + min) & mask);
506 val_mask = mask << shift;
509 ret = snd_soc_component_update_bits(component, rreg, val_mask,
515 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
518 * snd_soc_get_volsw_range - single mixer get callback with range
519 * @kcontrol: mixer control
520 * @ucontrol: control element information
522 * Callback to get the value, within a range, of a single mixer control.
524 * Returns 0 for success.
526 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
527 struct snd_ctl_elem_value *ucontrol)
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;
537 unsigned int mask = (1 << fls(max)) - 1;
538 unsigned int invert = mc->invert;
541 val = snd_soc_component_read(component, reg);
542 ucontrol->value.integer.value[0] = (val >> shift) & mask;
544 ucontrol->value.integer.value[0] =
545 max - ucontrol->value.integer.value[0];
547 ucontrol->value.integer.value[0] =
548 ucontrol->value.integer.value[0] - min;
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;
554 ucontrol->value.integer.value[1] =
555 max - ucontrol->value.integer.value[1];
557 ucontrol->value.integer.value[1] =
558 ucontrol->value.integer.value[1] - min;
563 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
566 * snd_soc_limit_volume - Set new limit to an existing volume control.
568 * @card: where to look for the control
569 * @name: Name of the control
570 * @max: new maximum limit
572 * Return 0 for success, else error.
574 int snd_soc_limit_volume(struct snd_soc_card *card,
575 const char *name, int max)
577 struct snd_kcontrol *kctl;
580 /* Sanity check for name and max */
581 if (unlikely(!name || max <= 0))
584 kctl = snd_soc_card_get_kcontrol(card, name);
586 struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value;
587 if (max <= mc->max) {
588 mc->platform_max = max;
594 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
596 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
597 struct snd_ctl_elem_info *uinfo)
599 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
600 struct soc_bytes *params = (void *)kcontrol->private_value;
602 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
603 uinfo->count = params->num_regs * component->val_bytes;
607 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
609 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
610 struct snd_ctl_elem_value *ucontrol)
612 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
613 struct soc_bytes *params = (void *)kcontrol->private_value;
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);
623 /* Hide any masked bytes to ensure consistent data reporting */
624 if (ret == 0 && params->mask) {
625 switch (component->val_bytes) {
627 ucontrol->value.bytes.data[0] &= ~params->mask;
630 ((u16 *)(&ucontrol->value.bytes.data))[0]
631 &= cpu_to_be16(~params->mask);
634 ((u32 *)(&ucontrol->value.bytes.data))[0]
635 &= cpu_to_be32(~params->mask);
644 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
646 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
647 struct snd_ctl_elem_value *ucontrol)
649 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
650 struct soc_bytes *params = (void *)kcontrol->private_value;
652 unsigned int val, mask;
655 if (!component->regmap || !params->num_regs)
658 len = params->num_regs * component->val_bytes;
660 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
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
670 ret = regmap_read(component->regmap, params->base, &val);
676 switch (component->val_bytes) {
678 ((u8 *)data)[0] &= ~params->mask;
679 ((u8 *)data)[0] |= val;
682 mask = ~params->mask;
683 ret = regmap_parse_val(component->regmap,
688 ((u16 *)data)[0] &= mask;
690 ret = regmap_parse_val(component->regmap,
695 ((u16 *)data)[0] |= val;
698 mask = ~params->mask;
699 ret = regmap_parse_val(component->regmap,
704 ((u32 *)data)[0] &= mask;
706 ret = regmap_parse_val(component->regmap,
711 ((u32 *)data)[0] |= val;
719 ret = regmap_raw_write(component->regmap, params->base,
727 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
729 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
730 struct snd_ctl_elem_info *ucontrol)
732 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
734 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
735 ucontrol->count = params->max;
739 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
741 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
742 unsigned int size, unsigned int __user *tlv)
744 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
745 unsigned int count = size < params->max ? size : params->max;
749 case SNDRV_CTL_TLV_OP_READ:
751 ret = params->get(kcontrol, tlv, count);
753 case SNDRV_CTL_TLV_OP_WRITE:
755 ret = params->put(kcontrol, tlv, count);
760 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
763 * snd_soc_info_xr_sx - signed multi register info callback
764 * @kcontrol: mreg control
765 * @uinfo: control element information
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.
771 * Returns 0 for success.
773 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
774 struct snd_ctl_elem_info *uinfo)
776 struct soc_mreg_control *mc =
777 (struct soc_mreg_control *)kcontrol->private_value;
778 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
780 uinfo->value.integer.min = mc->min;
781 uinfo->value.integer.max = mc->max;
785 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
788 * snd_soc_get_xr_sx - signed multi register get callback
789 * @kcontrol: mreg control
790 * @ucontrol: control element information
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.
798 * Returns 0 for success.
800 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
801 struct snd_ctl_elem_value *ucontrol)
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;
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));
822 if (min < 0 && val > max)
826 ucontrol->value.integer.value[0] = val;
830 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
833 * snd_soc_put_xr_sx - signed multi register get callback
834 * @kcontrol: mreg control
835 * @ucontrol: control element information
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.
843 * Returns 0 for success.
845 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
846 struct snd_ctl_elem_value *ucontrol)
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;
858 long val = ucontrol->value.integer.value[0];
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,
875 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
878 * snd_soc_get_strobe - strobe get callback
879 * @kcontrol: mixer control
880 * @ucontrol: control element information
882 * Callback get the value of a strobe mixer control.
884 * Returns 0 for success.
886 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
887 struct snd_ctl_elem_value *ucontrol)
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;
898 val = snd_soc_component_read(component, reg);
901 if (shift != 0 && val != 0)
903 ucontrol->value.enumerated.item[0] = val ^ invert;
907 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
910 * snd_soc_put_strobe - strobe put callback
911 * @kcontrol: mixer control
912 * @ucontrol: control element information
914 * Callback strobe a register bit to high then low (or the inverse)
915 * in one pass of a single mixer enum control.
917 * Returns 1 for success.
919 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
920 struct snd_ctl_elem_value *ucontrol)
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;
934 err = snd_soc_component_update_bits(component, reg, mask, val1);
938 return snd_soc_component_update_bits(component, reg, mask, val2);
940 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);