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];
326 if (mc->platform_max && ((int)val + min) > mc->platform_max)
332 val = (val + min) & mask;
335 val_mask = mask << shift;
337 if (snd_soc_volsw_is_stereo(mc)) {
338 val2 = ucontrol->value.integer.value[1];
339 if (mc->platform_max && ((int)val2 + min) > mc->platform_max)
341 if (val2 > max - min)
345 val2 = (val2 + min) & mask;
349 val_mask |= mask << rshift;
350 val |= val2 << rshift;
352 val2 = val2 << shift;
356 err = snd_soc_component_update_bits(component, reg, val_mask, val);
362 err = snd_soc_component_update_bits(component, reg2, val_mask,
364 /* Don't discard any error code or drop change flag */
365 if (ret == 0 || err < 0) {
372 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
375 * snd_soc_get_volsw_sx - single mixer get callback
376 * @kcontrol: mixer control
377 * @ucontrol: control element information
379 * Callback to get the value of a single mixer control, or a double mixer
380 * control that spans 2 registers.
382 * Returns 0 for success.
384 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
385 struct snd_ctl_elem_value *ucontrol)
387 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
388 struct soc_mixer_control *mc =
389 (struct soc_mixer_control *)kcontrol->private_value;
390 unsigned int reg = mc->reg;
391 unsigned int reg2 = mc->rreg;
392 unsigned int shift = mc->shift;
393 unsigned int rshift = mc->rshift;
396 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
400 ret = snd_soc_component_read(component, reg, &val);
404 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
406 if (snd_soc_volsw_is_stereo(mc)) {
407 ret = snd_soc_component_read(component, reg2, &val);
411 val = ((val >> rshift) - min) & mask;
412 ucontrol->value.integer.value[1] = val;
417 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
420 * snd_soc_put_volsw_sx - double mixer set callback
421 * @kcontrol: mixer control
422 * @ucontrol: control element information
424 * Callback to set the value of a double mixer control that spans 2 registers.
426 * Returns 0 for success.
428 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
429 struct snd_ctl_elem_value *ucontrol)
431 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
432 struct soc_mixer_control *mc =
433 (struct soc_mixer_control *)kcontrol->private_value;
435 unsigned int reg = mc->reg;
436 unsigned int reg2 = mc->rreg;
437 unsigned int shift = mc->shift;
438 unsigned int rshift = mc->rshift;
441 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
443 unsigned int val, val_mask, val2 = 0;
445 val = ucontrol->value.integer.value[0];
446 if (mc->platform_max && val > mc->platform_max)
452 val_mask = mask << shift;
453 val = (val + min) & mask;
456 err = snd_soc_component_update_bits(component, reg, val_mask, val);
460 if (snd_soc_volsw_is_stereo(mc)) {
461 val_mask = mask << rshift;
462 val2 = (ucontrol->value.integer.value[1] + min) & mask;
463 val2 = val2 << rshift;
465 err = snd_soc_component_update_bits(component, reg2, val_mask,
470 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
473 * snd_soc_info_volsw_range - single mixer info callback with range.
474 * @kcontrol: mixer control
475 * @uinfo: control element information
477 * Callback to provide information, within a range, about a single
480 * returns 0 for success.
482 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
483 struct snd_ctl_elem_info *uinfo)
485 struct soc_mixer_control *mc =
486 (struct soc_mixer_control *)kcontrol->private_value;
490 if (!mc->platform_max)
491 mc->platform_max = mc->max;
492 platform_max = mc->platform_max;
494 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
495 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
496 uinfo->value.integer.min = 0;
497 uinfo->value.integer.max = platform_max - min;
501 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
504 * snd_soc_put_volsw_range - single mixer put value callback with range.
505 * @kcontrol: mixer control
506 * @ucontrol: control element information
508 * Callback to set the value, within a range, for a single mixer control.
510 * Returns 0 for success.
512 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
513 struct snd_ctl_elem_value *ucontrol)
515 struct soc_mixer_control *mc =
516 (struct soc_mixer_control *)kcontrol->private_value;
517 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
518 unsigned int reg = mc->reg;
519 unsigned int rreg = mc->rreg;
520 unsigned int shift = mc->shift;
523 unsigned int mask = (1 << fls(max)) - 1;
524 unsigned int invert = mc->invert;
525 unsigned int val, val_mask;
528 tmp = ucontrol->value.integer.value[0];
531 if (mc->platform_max && tmp > mc->platform_max)
533 if (tmp > mc->max - mc->min + 1)
537 val = (max - ucontrol->value.integer.value[0]) & mask;
539 val = ((ucontrol->value.integer.value[0] + min) & mask);
540 val_mask = mask << shift;
543 err = snd_soc_component_update_bits(component, reg, val_mask, val);
548 if (snd_soc_volsw_is_stereo(mc)) {
549 tmp = ucontrol->value.integer.value[1];
552 if (mc->platform_max && tmp > mc->platform_max)
554 if (tmp > mc->max - mc->min + 1)
558 val = (max - ucontrol->value.integer.value[1]) & mask;
560 val = ((ucontrol->value.integer.value[1] + min) & mask);
561 val_mask = mask << shift;
564 err = snd_soc_component_update_bits(component, rreg, val_mask,
566 /* Don't discard any error code or drop change flag */
567 if (ret == 0 || err < 0) {
574 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
577 * snd_soc_get_volsw_range - single mixer get callback with range
578 * @kcontrol: mixer control
579 * @ucontrol: control element information
581 * Callback to get the value, within a range, of a single mixer control.
583 * Returns 0 for success.
585 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
586 struct snd_ctl_elem_value *ucontrol)
588 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
589 struct soc_mixer_control *mc =
590 (struct soc_mixer_control *)kcontrol->private_value;
591 unsigned int reg = mc->reg;
592 unsigned int rreg = mc->rreg;
593 unsigned int shift = mc->shift;
596 unsigned int mask = (1 << fls(max)) - 1;
597 unsigned int invert = mc->invert;
601 ret = snd_soc_component_read(component, reg, &val);
605 ucontrol->value.integer.value[0] = (val >> shift) & mask;
607 ucontrol->value.integer.value[0] =
608 max - ucontrol->value.integer.value[0];
610 ucontrol->value.integer.value[0] =
611 ucontrol->value.integer.value[0] - min;
613 if (snd_soc_volsw_is_stereo(mc)) {
614 ret = snd_soc_component_read(component, rreg, &val);
618 ucontrol->value.integer.value[1] = (val >> shift) & mask;
620 ucontrol->value.integer.value[1] =
621 max - ucontrol->value.integer.value[1];
623 ucontrol->value.integer.value[1] =
624 ucontrol->value.integer.value[1] - min;
629 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
632 * snd_soc_limit_volume - Set new limit to an existing volume control.
634 * @card: where to look for the control
635 * @name: Name of the control
636 * @max: new maximum limit
638 * Return 0 for success, else error.
640 int snd_soc_limit_volume(struct snd_soc_card *card,
641 const char *name, int max)
643 struct snd_card *snd_card = card->snd_card;
644 struct snd_kcontrol *kctl;
645 struct soc_mixer_control *mc;
649 /* Sanity check for name and max */
650 if (unlikely(!name || max <= 0))
653 list_for_each_entry(kctl, &snd_card->controls, list) {
654 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
660 mc = (struct soc_mixer_control *)kctl->private_value;
661 if (max <= mc->max) {
662 mc->platform_max = max;
668 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
670 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
671 struct snd_ctl_elem_info *uinfo)
673 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
674 struct soc_bytes *params = (void *)kcontrol->private_value;
676 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
677 uinfo->count = params->num_regs * component->val_bytes;
681 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
683 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
684 struct snd_ctl_elem_value *ucontrol)
686 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
687 struct soc_bytes *params = (void *)kcontrol->private_value;
690 if (component->regmap)
691 ret = regmap_raw_read(component->regmap, params->base,
692 ucontrol->value.bytes.data,
693 params->num_regs * component->val_bytes);
697 /* Hide any masked bytes to ensure consistent data reporting */
698 if (ret == 0 && params->mask) {
699 switch (component->val_bytes) {
701 ucontrol->value.bytes.data[0] &= ~params->mask;
704 ((u16 *)(&ucontrol->value.bytes.data))[0]
705 &= cpu_to_be16(~params->mask);
708 ((u32 *)(&ucontrol->value.bytes.data))[0]
709 &= cpu_to_be32(~params->mask);
718 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
720 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
721 struct snd_ctl_elem_value *ucontrol)
723 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
724 struct soc_bytes *params = (void *)kcontrol->private_value;
726 unsigned int val, mask;
729 if (!component->regmap || !params->num_regs)
732 len = params->num_regs * component->val_bytes;
734 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
739 * If we've got a mask then we need to preserve the register
740 * bits. We shouldn't modify the incoming data so take a
744 ret = regmap_read(component->regmap, params->base, &val);
750 switch (component->val_bytes) {
752 ((u8 *)data)[0] &= ~params->mask;
753 ((u8 *)data)[0] |= val;
756 mask = ~params->mask;
757 ret = regmap_parse_val(component->regmap,
762 ((u16 *)data)[0] &= mask;
764 ret = regmap_parse_val(component->regmap,
769 ((u16 *)data)[0] |= val;
772 mask = ~params->mask;
773 ret = regmap_parse_val(component->regmap,
778 ((u32 *)data)[0] &= mask;
780 ret = regmap_parse_val(component->regmap,
785 ((u32 *)data)[0] |= val;
793 ret = regmap_raw_write(component->regmap, params->base,
801 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
803 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
804 struct snd_ctl_elem_info *ucontrol)
806 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
808 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
809 ucontrol->count = params->max;
813 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
815 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
816 unsigned int size, unsigned int __user *tlv)
818 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
819 unsigned int count = size < params->max ? size : params->max;
823 case SNDRV_CTL_TLV_OP_READ:
825 ret = params->get(kcontrol, tlv, count);
827 case SNDRV_CTL_TLV_OP_WRITE:
829 ret = params->put(kcontrol, tlv, count);
834 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
837 * snd_soc_info_xr_sx - signed multi register info callback
838 * @kcontrol: mreg control
839 * @uinfo: control element information
841 * Callback to provide information of a control that can
842 * span multiple codec registers which together
843 * forms a single signed value in a MSB/LSB manner.
845 * Returns 0 for success.
847 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
848 struct snd_ctl_elem_info *uinfo)
850 struct soc_mreg_control *mc =
851 (struct soc_mreg_control *)kcontrol->private_value;
852 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
854 uinfo->value.integer.min = mc->min;
855 uinfo->value.integer.max = mc->max;
859 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
862 * snd_soc_get_xr_sx - signed multi register get callback
863 * @kcontrol: mreg control
864 * @ucontrol: control element information
866 * Callback to get the value of a control that can span
867 * multiple codec registers which together forms a single
868 * signed value in a MSB/LSB manner. The control supports
869 * specifying total no of bits used to allow for bitfields
870 * across the multiple codec registers.
872 * Returns 0 for success.
874 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
875 struct snd_ctl_elem_value *ucontrol)
877 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
878 struct soc_mreg_control *mc =
879 (struct soc_mreg_control *)kcontrol->private_value;
880 unsigned int regbase = mc->regbase;
881 unsigned int regcount = mc->regcount;
882 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
883 unsigned int regwmask = (1UL<<regwshift)-1;
884 unsigned int invert = mc->invert;
885 unsigned long mask = (1UL<<mc->nbits)-1;
893 for (i = 0; i < regcount; i++) {
894 ret = snd_soc_component_read(component, regbase+i, ®val);
897 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
900 if (min < 0 && val > max)
904 ucontrol->value.integer.value[0] = val;
908 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
911 * snd_soc_put_xr_sx - signed multi register get callback
912 * @kcontrol: mreg control
913 * @ucontrol: control element information
915 * Callback to set the value of a control that can span
916 * multiple codec registers which together forms a single
917 * signed value in a MSB/LSB manner. The control supports
918 * specifying total no of bits used to allow for bitfields
919 * across the multiple codec registers.
921 * Returns 0 for success.
923 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
924 struct snd_ctl_elem_value *ucontrol)
926 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
927 struct soc_mreg_control *mc =
928 (struct soc_mreg_control *)kcontrol->private_value;
929 unsigned int regbase = mc->regbase;
930 unsigned int regcount = mc->regcount;
931 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
932 unsigned int regwmask = (1UL<<regwshift)-1;
933 unsigned int invert = mc->invert;
934 unsigned long mask = (1UL<<mc->nbits)-1;
936 long val = ucontrol->value.integer.value[0];
937 unsigned int i, regval, regmask;
940 if (val < mc->min || val > mc->max)
945 for (i = 0; i < regcount; i++) {
946 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
947 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
948 err = snd_soc_component_update_bits(component, regbase+i,
956 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
959 * snd_soc_get_strobe - strobe get callback
960 * @kcontrol: mixer control
961 * @ucontrol: control element information
963 * Callback get the value of a strobe mixer control.
965 * Returns 0 for success.
967 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
968 struct snd_ctl_elem_value *ucontrol)
970 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
971 struct soc_mixer_control *mc =
972 (struct soc_mixer_control *)kcontrol->private_value;
973 unsigned int reg = mc->reg;
974 unsigned int shift = mc->shift;
975 unsigned int mask = 1 << shift;
976 unsigned int invert = mc->invert != 0;
980 ret = snd_soc_component_read(component, reg, &val);
986 if (shift != 0 && val != 0)
988 ucontrol->value.enumerated.item[0] = val ^ invert;
992 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
995 * snd_soc_put_strobe - strobe put callback
996 * @kcontrol: mixer control
997 * @ucontrol: control element information
999 * Callback strobe a register bit to high then low (or the inverse)
1000 * in one pass of a single mixer enum control.
1002 * Returns 1 for success.
1004 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
1005 struct snd_ctl_elem_value *ucontrol)
1007 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1008 struct soc_mixer_control *mc =
1009 (struct soc_mixer_control *)kcontrol->private_value;
1010 unsigned int reg = mc->reg;
1011 unsigned int shift = mc->shift;
1012 unsigned int mask = 1 << shift;
1013 unsigned int invert = mc->invert != 0;
1014 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
1015 unsigned int val1 = (strobe ^ invert) ? mask : 0;
1016 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
1019 err = snd_soc_component_update_bits(component, reg, mask, val1);
1023 return snd_soc_component_update_bits(component, reg, mask, val2);
1025 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);