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 if (ucontrol->value.integer.value[0] < 0)
321 val = ucontrol->value.integer.value[0];
322 if (mc->platform_max && val > mc->platform_max)
326 val = (val + min) & mask;
329 val_mask = mask << shift;
331 if (snd_soc_volsw_is_stereo(mc)) {
332 if (ucontrol->value.integer.value[1] < 0)
334 val2 = ucontrol->value.integer.value[1];
335 if (mc->platform_max && val2 > mc->platform_max)
337 if (val2 > max - min)
339 val2 = (val2 + min) & mask;
343 val_mask |= mask << rshift;
344 val |= val2 << rshift;
346 val2 = val2 << shift;
350 err = snd_soc_component_update_bits(component, reg, val_mask, val);
355 err = snd_soc_component_update_bits(component, reg2, val_mask,
360 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
363 * snd_soc_get_volsw_sx - single mixer get callback
364 * @kcontrol: mixer control
365 * @ucontrol: control element information
367 * Callback to get the value of a single mixer control, or a double mixer
368 * control that spans 2 registers.
370 * Returns 0 for success.
372 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
373 struct snd_ctl_elem_value *ucontrol)
375 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
376 struct soc_mixer_control *mc =
377 (struct soc_mixer_control *)kcontrol->private_value;
378 unsigned int reg = mc->reg;
379 unsigned int reg2 = mc->rreg;
380 unsigned int shift = mc->shift;
381 unsigned int rshift = mc->rshift;
384 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
387 val = snd_soc_component_read(component, reg);
388 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
390 if (snd_soc_volsw_is_stereo(mc)) {
391 val = snd_soc_component_read(component, reg2);
392 val = ((val >> rshift) - min) & mask;
393 ucontrol->value.integer.value[1] = val;
398 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
401 * snd_soc_put_volsw_sx - double mixer set callback
402 * @kcontrol: mixer control
403 * @ucontrol: control element information
405 * Callback to set the value of a double mixer control that spans 2 registers.
407 * Returns 0 for success.
409 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
410 struct snd_ctl_elem_value *ucontrol)
412 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
413 struct soc_mixer_control *mc =
414 (struct soc_mixer_control *)kcontrol->private_value;
416 unsigned int reg = mc->reg;
417 unsigned int reg2 = mc->rreg;
418 unsigned int shift = mc->shift;
419 unsigned int rshift = mc->rshift;
422 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
424 unsigned int val, val_mask;
426 if (ucontrol->value.integer.value[0] < 0)
428 val = ucontrol->value.integer.value[0];
429 if (mc->platform_max && val > mc->platform_max)
433 val_mask = mask << shift;
434 val = (val + min) & mask;
437 err = snd_soc_component_update_bits(component, reg, val_mask, val);
441 if (snd_soc_volsw_is_stereo(mc)) {
444 val_mask = mask << rshift;
445 val2 = (ucontrol->value.integer.value[1] + min) & mask;
446 val2 = val2 << rshift;
448 err = snd_soc_component_update_bits(component, reg2, val_mask,
453 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
456 * snd_soc_info_volsw_range - single mixer info callback with range.
457 * @kcontrol: mixer control
458 * @uinfo: control element information
460 * Callback to provide information, within a range, about a single
463 * returns 0 for success.
465 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
466 struct snd_ctl_elem_info *uinfo)
468 struct soc_mixer_control *mc =
469 (struct soc_mixer_control *)kcontrol->private_value;
473 if (!mc->platform_max)
474 mc->platform_max = mc->max;
475 platform_max = mc->platform_max;
477 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
478 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
479 uinfo->value.integer.min = 0;
480 uinfo->value.integer.max = platform_max - min;
484 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
487 * snd_soc_put_volsw_range - single mixer put value callback with range.
488 * @kcontrol: mixer control
489 * @ucontrol: control element information
491 * Callback to set the value, within a range, for a single mixer control.
493 * Returns 0 for success.
495 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
496 struct snd_ctl_elem_value *ucontrol)
498 struct soc_mixer_control *mc =
499 (struct soc_mixer_control *)kcontrol->private_value;
500 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
501 unsigned int reg = mc->reg;
502 unsigned int rreg = mc->rreg;
503 unsigned int shift = mc->shift;
506 unsigned int mask = (1 << fls(max)) - 1;
507 unsigned int invert = mc->invert;
508 unsigned int val, val_mask;
512 val = (max - ucontrol->value.integer.value[0]) & mask;
514 val = ((ucontrol->value.integer.value[0] + min) & mask);
515 val_mask = mask << shift;
518 ret = snd_soc_component_update_bits(component, reg, val_mask, val);
522 if (snd_soc_volsw_is_stereo(mc)) {
524 val = (max - ucontrol->value.integer.value[1]) & mask;
526 val = ((ucontrol->value.integer.value[1] + min) & mask);
527 val_mask = mask << shift;
530 ret = snd_soc_component_update_bits(component, rreg, val_mask,
536 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
539 * snd_soc_get_volsw_range - single mixer get callback with range
540 * @kcontrol: mixer control
541 * @ucontrol: control element information
543 * Callback to get the value, within a range, of a single mixer control.
545 * Returns 0 for success.
547 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
548 struct snd_ctl_elem_value *ucontrol)
550 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
551 struct soc_mixer_control *mc =
552 (struct soc_mixer_control *)kcontrol->private_value;
553 unsigned int reg = mc->reg;
554 unsigned int rreg = mc->rreg;
555 unsigned int shift = mc->shift;
558 unsigned int mask = (1 << fls(max)) - 1;
559 unsigned int invert = mc->invert;
562 val = snd_soc_component_read(component, reg);
563 ucontrol->value.integer.value[0] = (val >> shift) & mask;
565 ucontrol->value.integer.value[0] =
566 max - ucontrol->value.integer.value[0];
568 ucontrol->value.integer.value[0] =
569 ucontrol->value.integer.value[0] - min;
571 if (snd_soc_volsw_is_stereo(mc)) {
572 val = snd_soc_component_read(component, rreg);
573 ucontrol->value.integer.value[1] = (val >> shift) & mask;
575 ucontrol->value.integer.value[1] =
576 max - ucontrol->value.integer.value[1];
578 ucontrol->value.integer.value[1] =
579 ucontrol->value.integer.value[1] - min;
584 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
587 * snd_soc_limit_volume - Set new limit to an existing volume control.
589 * @card: where to look for the control
590 * @name: Name of the control
591 * @max: new maximum limit
593 * Return 0 for success, else error.
595 int snd_soc_limit_volume(struct snd_soc_card *card,
596 const char *name, int max)
598 struct snd_kcontrol *kctl;
601 /* Sanity check for name and max */
602 if (unlikely(!name || max <= 0))
605 kctl = snd_soc_card_get_kcontrol(card, name);
607 struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value;
608 if (max <= mc->max) {
609 mc->platform_max = max;
615 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
617 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
618 struct snd_ctl_elem_info *uinfo)
620 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
621 struct soc_bytes *params = (void *)kcontrol->private_value;
623 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
624 uinfo->count = params->num_regs * component->val_bytes;
628 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
630 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
631 struct snd_ctl_elem_value *ucontrol)
633 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
634 struct soc_bytes *params = (void *)kcontrol->private_value;
637 if (component->regmap)
638 ret = regmap_raw_read(component->regmap, params->base,
639 ucontrol->value.bytes.data,
640 params->num_regs * component->val_bytes);
644 /* Hide any masked bytes to ensure consistent data reporting */
645 if (ret == 0 && params->mask) {
646 switch (component->val_bytes) {
648 ucontrol->value.bytes.data[0] &= ~params->mask;
651 ((u16 *)(&ucontrol->value.bytes.data))[0]
652 &= cpu_to_be16(~params->mask);
655 ((u32 *)(&ucontrol->value.bytes.data))[0]
656 &= cpu_to_be32(~params->mask);
665 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
667 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
668 struct snd_ctl_elem_value *ucontrol)
670 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
671 struct soc_bytes *params = (void *)kcontrol->private_value;
673 unsigned int val, mask;
676 if (!component->regmap || !params->num_regs)
679 len = params->num_regs * component->val_bytes;
681 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
686 * If we've got a mask then we need to preserve the register
687 * bits. We shouldn't modify the incoming data so take a
691 ret = regmap_read(component->regmap, params->base, &val);
697 switch (component->val_bytes) {
699 ((u8 *)data)[0] &= ~params->mask;
700 ((u8 *)data)[0] |= val;
703 mask = ~params->mask;
704 ret = regmap_parse_val(component->regmap,
709 ((u16 *)data)[0] &= mask;
711 ret = regmap_parse_val(component->regmap,
716 ((u16 *)data)[0] |= val;
719 mask = ~params->mask;
720 ret = regmap_parse_val(component->regmap,
725 ((u32 *)data)[0] &= mask;
727 ret = regmap_parse_val(component->regmap,
732 ((u32 *)data)[0] |= val;
740 ret = regmap_raw_write(component->regmap, params->base,
748 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
750 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
751 struct snd_ctl_elem_info *ucontrol)
753 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
755 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
756 ucontrol->count = params->max;
760 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
762 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
763 unsigned int size, unsigned int __user *tlv)
765 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
766 unsigned int count = size < params->max ? size : params->max;
770 case SNDRV_CTL_TLV_OP_READ:
772 ret = params->get(kcontrol, tlv, count);
774 case SNDRV_CTL_TLV_OP_WRITE:
776 ret = params->put(kcontrol, tlv, count);
781 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
784 * snd_soc_info_xr_sx - signed multi register info callback
785 * @kcontrol: mreg control
786 * @uinfo: control element information
788 * Callback to provide information of a control that can
789 * span multiple codec registers which together
790 * forms a single signed value in a MSB/LSB manner.
792 * Returns 0 for success.
794 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
795 struct snd_ctl_elem_info *uinfo)
797 struct soc_mreg_control *mc =
798 (struct soc_mreg_control *)kcontrol->private_value;
799 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
801 uinfo->value.integer.min = mc->min;
802 uinfo->value.integer.max = mc->max;
806 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
809 * snd_soc_get_xr_sx - signed multi register get callback
810 * @kcontrol: mreg control
811 * @ucontrol: control element information
813 * Callback to get the value of a control that can span
814 * multiple codec registers which together forms a single
815 * signed value in a MSB/LSB manner. The control supports
816 * specifying total no of bits used to allow for bitfields
817 * across the multiple codec registers.
819 * Returns 0 for success.
821 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
822 struct snd_ctl_elem_value *ucontrol)
824 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
825 struct soc_mreg_control *mc =
826 (struct soc_mreg_control *)kcontrol->private_value;
827 unsigned int regbase = mc->regbase;
828 unsigned int regcount = mc->regcount;
829 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
830 unsigned int regwmask = (1UL<<regwshift)-1;
831 unsigned int invert = mc->invert;
832 unsigned long mask = (1UL<<mc->nbits)-1;
838 for (i = 0; i < regcount; i++) {
839 unsigned int regval = snd_soc_component_read(component, regbase+i);
840 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
843 if (min < 0 && val > max)
847 ucontrol->value.integer.value[0] = val;
851 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
854 * snd_soc_put_xr_sx - signed multi register get callback
855 * @kcontrol: mreg control
856 * @ucontrol: control element information
858 * Callback to set the value of a control that can span
859 * multiple codec registers which together forms a single
860 * signed value in a MSB/LSB manner. The control supports
861 * specifying total no of bits used to allow for bitfields
862 * across the multiple codec registers.
864 * Returns 0 for success.
866 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
867 struct snd_ctl_elem_value *ucontrol)
869 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
870 struct soc_mreg_control *mc =
871 (struct soc_mreg_control *)kcontrol->private_value;
872 unsigned int regbase = mc->regbase;
873 unsigned int regcount = mc->regcount;
874 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
875 unsigned int regwmask = (1UL<<regwshift)-1;
876 unsigned int invert = mc->invert;
877 unsigned long mask = (1UL<<mc->nbits)-1;
879 long val = ucontrol->value.integer.value[0];
882 if (val < mc->min || val > mc->max)
887 for (i = 0; i < regcount; i++) {
888 unsigned int regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
889 unsigned int regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
890 int err = snd_soc_component_update_bits(component, regbase+i,
898 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
901 * snd_soc_get_strobe - strobe get callback
902 * @kcontrol: mixer control
903 * @ucontrol: control element information
905 * Callback get the value of a strobe mixer control.
907 * Returns 0 for success.
909 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
910 struct snd_ctl_elem_value *ucontrol)
912 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
913 struct soc_mixer_control *mc =
914 (struct soc_mixer_control *)kcontrol->private_value;
915 unsigned int reg = mc->reg;
916 unsigned int shift = mc->shift;
917 unsigned int mask = 1 << shift;
918 unsigned int invert = mc->invert != 0;
921 val = snd_soc_component_read(component, reg);
924 if (shift != 0 && val != 0)
926 ucontrol->value.enumerated.item[0] = val ^ invert;
930 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
933 * snd_soc_put_strobe - strobe put callback
934 * @kcontrol: mixer control
935 * @ucontrol: control element information
937 * Callback strobe a register bit to high then low (or the inverse)
938 * in one pass of a single mixer enum control.
940 * Returns 1 for success.
942 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
943 struct snd_ctl_elem_value *ucontrol)
945 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
946 struct soc_mixer_control *mc =
947 (struct soc_mixer_control *)kcontrol->private_value;
948 unsigned int reg = mc->reg;
949 unsigned int shift = mc->shift;
950 unsigned int mask = 1 << shift;
951 unsigned int invert = mc->invert != 0;
952 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
953 unsigned int val1 = (strobe ^ invert) ? mask : 0;
954 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
957 err = snd_soc_component_update_bits(component, reg, mask, val1);
961 return snd_soc_component_update_bits(component, reg, mask, val2);
963 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);