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>
18 #include <linux/bitops.h>
19 #include <linux/ctype.h>
20 #include <linux/slab.h>
21 #include <sound/core.h>
22 #include <sound/jack.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dpcm.h>
27 #include <sound/initval.h>
30 * snd_soc_info_enum_double - enumerated double mixer info callback
31 * @kcontrol: mixer control
32 * @uinfo: control element information
34 * Callback to provide information about a double enumerated
37 * Returns 0 for success.
39 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
40 struct snd_ctl_elem_info *uinfo)
42 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
44 return snd_ctl_enum_info(uinfo, e->shift_l == e->shift_r ? 1 : 2,
47 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
50 * snd_soc_get_enum_double - enumerated double mixer get callback
51 * @kcontrol: mixer control
52 * @ucontrol: control element information
54 * Callback to get the value of a double enumerated mixer.
56 * Returns 0 for success.
58 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
59 struct snd_ctl_elem_value *ucontrol)
61 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
62 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
63 unsigned int val, item;
66 reg_val = snd_soc_component_read(component, e->reg);
67 val = (reg_val >> e->shift_l) & e->mask;
68 item = snd_soc_enum_val_to_item(e, val);
69 ucontrol->value.enumerated.item[0] = item;
70 if (e->shift_l != e->shift_r) {
71 val = (reg_val >> e->shift_r) & e->mask;
72 item = snd_soc_enum_val_to_item(e, val);
73 ucontrol->value.enumerated.item[1] = item;
78 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
81 * snd_soc_put_enum_double - enumerated double mixer put callback
82 * @kcontrol: mixer control
83 * @ucontrol: control element information
85 * Callback to set the value of a double enumerated mixer.
87 * Returns 0 for success.
89 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
90 struct snd_ctl_elem_value *ucontrol)
92 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
93 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
94 unsigned int *item = ucontrol->value.enumerated.item;
98 if (item[0] >= e->items)
100 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
101 mask = e->mask << e->shift_l;
102 if (e->shift_l != e->shift_r) {
103 if (item[1] >= e->items)
105 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
106 mask |= e->mask << e->shift_r;
109 return snd_soc_component_update_bits(component, e->reg, mask, val);
111 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
114 * snd_soc_read_signed - Read a codec register and interpret as signed value
115 * @component: component
116 * @reg: Register to read
117 * @mask: Mask to use after shifting the register value
118 * @shift: Right shift of register value
119 * @sign_bit: Bit that describes if a number is negative or not.
120 * @signed_val: Pointer to where the read value should be stored
122 * This functions reads a codec register. The register value is shifted right
123 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
124 * the given registervalue into a signed integer if sign_bit is non-zero.
126 * Returns 0 on sucess, otherwise an error value
128 static int snd_soc_read_signed(struct snd_soc_component *component,
129 unsigned int reg, unsigned int mask, unsigned int shift,
130 unsigned int sign_bit, int *signed_val)
135 val = snd_soc_component_read(component, reg);
136 val = (val >> shift) & mask;
143 /* non-negative number */
144 if (!(val & BIT(sign_bit))) {
152 * The register most probably does not contain a full-sized int.
153 * Instead we have an arbitrary number of bits in a signed
154 * representation which has to be translated into a full-sized int.
155 * This is done by filling up all bits above the sign-bit.
157 ret |= ~((int)(BIT(sign_bit) - 1));
165 * snd_soc_info_volsw - single mixer info callback
166 * @kcontrol: mixer control
167 * @uinfo: control element information
169 * Callback to provide information about a single mixer control, or a double
170 * mixer control that spans 2 registers.
172 * Returns 0 for success.
174 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
175 struct snd_ctl_elem_info *uinfo)
177 struct soc_mixer_control *mc =
178 (struct soc_mixer_control *)kcontrol->private_value;
179 const char *vol_string = NULL;
182 max = uinfo->value.integer.max = mc->max - mc->min;
183 if (mc->platform_max && mc->platform_max < max)
184 max = mc->platform_max;
187 /* Even two value controls ending in Volume should always be integer */
188 vol_string = strstr(kcontrol->id.name, " Volume");
189 if (vol_string && !strcmp(vol_string, " Volume"))
190 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
192 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
194 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 = max;
203 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
206 * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls
207 * @kcontrol: mixer control
208 * @uinfo: control element information
210 * Callback to provide information about a single mixer control, or a double
211 * mixer control that spans 2 registers of the SX TLV type. SX TLV controls
212 * have a range that represents both positive and negative values either side
213 * of zero but without a sign bit. min is the minimum register value, max is
214 * the number of steps.
216 * Returns 0 for success.
218 int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol,
219 struct snd_ctl_elem_info *uinfo)
221 struct soc_mixer_control *mc =
222 (struct soc_mixer_control *)kcontrol->private_value;
225 if (mc->platform_max)
226 max = mc->platform_max;
230 if (max == 1 && !strstr(kcontrol->id.name, " Volume"))
231 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
233 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
235 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
236 uinfo->value.integer.min = 0;
237 uinfo->value.integer.max = max;
241 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx);
244 * snd_soc_get_volsw - single mixer get callback
245 * @kcontrol: mixer control
246 * @ucontrol: control element information
248 * Callback to get the value of a single mixer control, or a double mixer
249 * control that spans 2 registers.
251 * Returns 0 for success.
253 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
254 struct snd_ctl_elem_value *ucontrol)
256 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
257 struct soc_mixer_control *mc =
258 (struct soc_mixer_control *)kcontrol->private_value;
259 unsigned int reg = mc->reg;
260 unsigned int reg2 = mc->rreg;
261 unsigned int shift = mc->shift;
262 unsigned int rshift = mc->rshift;
265 int sign_bit = mc->sign_bit;
266 unsigned int mask = (1 << fls(max)) - 1;
267 unsigned int invert = mc->invert;
272 mask = BIT(sign_bit + 1) - 1;
274 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
278 ucontrol->value.integer.value[0] = val - min;
280 ucontrol->value.integer.value[0] =
281 max - ucontrol->value.integer.value[0];
283 if (snd_soc_volsw_is_stereo(mc)) {
285 ret = snd_soc_read_signed(component, reg, mask, rshift,
288 ret = snd_soc_read_signed(component, reg2, mask, shift,
293 ucontrol->value.integer.value[1] = val - min;
295 ucontrol->value.integer.value[1] =
296 max - ucontrol->value.integer.value[1];
301 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
304 * snd_soc_put_volsw - single mixer put callback
305 * @kcontrol: mixer control
306 * @ucontrol: control element information
308 * Callback to set the value of a single mixer control, or a double mixer
309 * control that spans 2 registers.
311 * Returns 0 for success.
313 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
314 struct snd_ctl_elem_value *ucontrol)
316 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
317 struct soc_mixer_control *mc =
318 (struct soc_mixer_control *)kcontrol->private_value;
319 unsigned int reg = mc->reg;
320 unsigned int reg2 = mc->rreg;
321 unsigned int shift = mc->shift;
322 unsigned int rshift = mc->rshift;
325 unsigned int sign_bit = mc->sign_bit;
326 unsigned int mask = (1 << fls(max)) - 1;
327 unsigned int invert = mc->invert;
329 bool type_2r = false;
330 unsigned int val2 = 0;
331 unsigned int val, val_mask;
334 mask = BIT(sign_bit + 1) - 1;
336 if (ucontrol->value.integer.value[0] < 0)
338 val = ucontrol->value.integer.value[0];
339 if (mc->platform_max && ((int)val + min) > mc->platform_max)
343 val = (val + min) & mask;
346 val_mask = mask << shift;
348 if (snd_soc_volsw_is_stereo(mc)) {
349 if (ucontrol->value.integer.value[1] < 0)
351 val2 = ucontrol->value.integer.value[1];
352 if (mc->platform_max && ((int)val2 + min) > mc->platform_max)
354 if (val2 > max - min)
356 val2 = (val2 + min) & mask;
360 val_mask |= mask << rshift;
361 val |= val2 << rshift;
363 val2 = val2 << shift;
367 err = snd_soc_component_update_bits(component, reg, val_mask, val);
373 err = snd_soc_component_update_bits(component, reg2, val_mask,
375 /* Don't discard any error code or drop change flag */
376 if (ret == 0 || err < 0) {
383 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
386 * snd_soc_get_volsw_sx - single mixer get callback
387 * @kcontrol: mixer control
388 * @ucontrol: control element information
390 * Callback to get the value of a single mixer control, or a double mixer
391 * control that spans 2 registers.
393 * Returns 0 for success.
395 int snd_soc_get_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;
401 unsigned int reg = mc->reg;
402 unsigned int reg2 = mc->rreg;
403 unsigned int shift = mc->shift;
404 unsigned int rshift = mc->rshift;
407 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
410 val = snd_soc_component_read(component, reg);
411 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
413 if (snd_soc_volsw_is_stereo(mc)) {
414 val = snd_soc_component_read(component, reg2);
415 val = ((val >> rshift) - min) & mask;
416 ucontrol->value.integer.value[1] = val;
421 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
424 * snd_soc_put_volsw_sx - double mixer set callback
425 * @kcontrol: mixer control
426 * @ucontrol: control element information
428 * Callback to set the value of a double mixer control that spans 2 registers.
430 * Returns 0 for success.
432 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
433 struct snd_ctl_elem_value *ucontrol)
435 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
436 struct soc_mixer_control *mc =
437 (struct soc_mixer_control *)kcontrol->private_value;
439 unsigned int reg = mc->reg;
440 unsigned int reg2 = mc->rreg;
441 unsigned int shift = mc->shift;
442 unsigned int rshift = mc->rshift;
445 unsigned int mask = (1U << (fls(min + max) - 1)) - 1;
448 unsigned int val, val_mask;
450 if (ucontrol->value.integer.value[0] < 0)
452 val = ucontrol->value.integer.value[0];
453 if (mc->platform_max && val > mc->platform_max)
457 val_mask = mask << shift;
458 val = (val + min) & mask;
461 err = snd_soc_component_update_bits(component, reg, val_mask, val);
466 if (snd_soc_volsw_is_stereo(mc)) {
469 val_mask = mask << rshift;
470 val2 = (ucontrol->value.integer.value[1] + min) & mask;
471 val2 = val2 << rshift;
473 err = snd_soc_component_update_bits(component, reg2, val_mask,
476 /* Don't discard any error code or drop change flag */
477 if (ret == 0 || err < 0) {
483 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
486 * snd_soc_info_volsw_range - single mixer info callback with range.
487 * @kcontrol: mixer control
488 * @uinfo: control element information
490 * Callback to provide information, within a range, about a single
493 * returns 0 for success.
495 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
496 struct snd_ctl_elem_info *uinfo)
498 struct soc_mixer_control *mc =
499 (struct soc_mixer_control *)kcontrol->private_value;
503 if (!mc->platform_max)
504 mc->platform_max = mc->max;
505 platform_max = mc->platform_max;
507 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
508 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
509 uinfo->value.integer.min = 0;
510 uinfo->value.integer.max = platform_max - min;
514 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
517 * snd_soc_put_volsw_range - single mixer put value callback with range.
518 * @kcontrol: mixer control
519 * @ucontrol: control element information
521 * Callback to set the value, within a range, for a single mixer control.
523 * Returns 0 for success.
525 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
526 struct snd_ctl_elem_value *ucontrol)
528 struct soc_mixer_control *mc =
529 (struct soc_mixer_control *)kcontrol->private_value;
530 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
531 unsigned int reg = mc->reg;
532 unsigned int rreg = mc->rreg;
533 unsigned int shift = mc->shift;
536 unsigned int mask = (1 << fls(max)) - 1;
537 unsigned int invert = mc->invert;
538 unsigned int val, val_mask;
541 tmp = ucontrol->value.integer.value[0];
544 if (mc->platform_max && tmp > mc->platform_max)
546 if (tmp > mc->max - mc->min)
550 val = (max - ucontrol->value.integer.value[0]) & mask;
552 val = ((ucontrol->value.integer.value[0] + min) & mask);
553 val_mask = mask << shift;
556 err = snd_soc_component_update_bits(component, reg, val_mask, val);
561 if (snd_soc_volsw_is_stereo(mc)) {
562 tmp = ucontrol->value.integer.value[1];
565 if (mc->platform_max && tmp > mc->platform_max)
567 if (tmp > mc->max - mc->min)
571 val = (max - ucontrol->value.integer.value[1]) & mask;
573 val = ((ucontrol->value.integer.value[1] + min) & mask);
574 val_mask = mask << shift;
577 err = snd_soc_component_update_bits(component, rreg, val_mask,
579 /* Don't discard any error code or drop change flag */
580 if (ret == 0 || err < 0) {
587 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
590 * snd_soc_get_volsw_range - single mixer get callback with range
591 * @kcontrol: mixer control
592 * @ucontrol: control element information
594 * Callback to get the value, within a range, of a single mixer control.
596 * Returns 0 for success.
598 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
599 struct snd_ctl_elem_value *ucontrol)
601 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
602 struct soc_mixer_control *mc =
603 (struct soc_mixer_control *)kcontrol->private_value;
604 unsigned int reg = mc->reg;
605 unsigned int rreg = mc->rreg;
606 unsigned int shift = mc->shift;
609 unsigned int mask = (1 << fls(max)) - 1;
610 unsigned int invert = mc->invert;
613 val = snd_soc_component_read(component, reg);
614 ucontrol->value.integer.value[0] = (val >> shift) & mask;
616 ucontrol->value.integer.value[0] =
617 max - ucontrol->value.integer.value[0];
619 ucontrol->value.integer.value[0] =
620 ucontrol->value.integer.value[0] - min;
622 if (snd_soc_volsw_is_stereo(mc)) {
623 val = snd_soc_component_read(component, rreg);
624 ucontrol->value.integer.value[1] = (val >> shift) & mask;
626 ucontrol->value.integer.value[1] =
627 max - ucontrol->value.integer.value[1];
629 ucontrol->value.integer.value[1] =
630 ucontrol->value.integer.value[1] - min;
635 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
638 * snd_soc_limit_volume - Set new limit to an existing volume control.
640 * @card: where to look for the control
641 * @name: Name of the control
642 * @max: new maximum limit
644 * Return 0 for success, else error.
646 int snd_soc_limit_volume(struct snd_soc_card *card,
647 const char *name, int max)
649 struct snd_kcontrol *kctl;
652 /* Sanity check for name and max */
653 if (unlikely(!name || max <= 0))
656 kctl = snd_soc_card_get_kcontrol(card, name);
658 struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value;
659 if (max <= mc->max) {
660 mc->platform_max = max;
666 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
668 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
669 struct snd_ctl_elem_info *uinfo)
671 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
672 struct soc_bytes *params = (void *)kcontrol->private_value;
674 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
675 uinfo->count = params->num_regs * component->val_bytes;
679 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
681 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
682 struct snd_ctl_elem_value *ucontrol)
684 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
685 struct soc_bytes *params = (void *)kcontrol->private_value;
688 if (component->regmap)
689 ret = regmap_raw_read(component->regmap, params->base,
690 ucontrol->value.bytes.data,
691 params->num_regs * component->val_bytes);
695 /* Hide any masked bytes to ensure consistent data reporting */
696 if (ret == 0 && params->mask) {
697 switch (component->val_bytes) {
699 ucontrol->value.bytes.data[0] &= ~params->mask;
702 ((u16 *)(&ucontrol->value.bytes.data))[0]
703 &= cpu_to_be16(~params->mask);
706 ((u32 *)(&ucontrol->value.bytes.data))[0]
707 &= cpu_to_be32(~params->mask);
716 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
718 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
719 struct snd_ctl_elem_value *ucontrol)
721 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
722 struct soc_bytes *params = (void *)kcontrol->private_value;
724 unsigned int val, mask;
727 if (!component->regmap || !params->num_regs)
730 len = params->num_regs * component->val_bytes;
732 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
737 * If we've got a mask then we need to preserve the register
738 * bits. We shouldn't modify the incoming data so take a
742 ret = regmap_read(component->regmap, params->base, &val);
748 switch (component->val_bytes) {
750 ((u8 *)data)[0] &= ~params->mask;
751 ((u8 *)data)[0] |= val;
754 mask = ~params->mask;
755 ret = regmap_parse_val(component->regmap,
760 ((u16 *)data)[0] &= mask;
762 ret = regmap_parse_val(component->regmap,
767 ((u16 *)data)[0] |= val;
770 mask = ~params->mask;
771 ret = regmap_parse_val(component->regmap,
776 ((u32 *)data)[0] &= mask;
778 ret = regmap_parse_val(component->regmap,
783 ((u32 *)data)[0] |= val;
791 ret = regmap_raw_write(component->regmap, params->base,
799 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
801 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
802 struct snd_ctl_elem_info *ucontrol)
804 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
806 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
807 ucontrol->count = params->max;
811 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
813 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
814 unsigned int size, unsigned int __user *tlv)
816 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
817 unsigned int count = size < params->max ? size : params->max;
821 case SNDRV_CTL_TLV_OP_READ:
823 ret = params->get(kcontrol, tlv, count);
825 case SNDRV_CTL_TLV_OP_WRITE:
827 ret = params->put(kcontrol, tlv, count);
832 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
835 * snd_soc_info_xr_sx - signed multi register info callback
836 * @kcontrol: mreg control
837 * @uinfo: control element information
839 * Callback to provide information of a control that can
840 * span multiple codec registers which together
841 * forms a single signed value in a MSB/LSB manner.
843 * Returns 0 for success.
845 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
846 struct snd_ctl_elem_info *uinfo)
848 struct soc_mreg_control *mc =
849 (struct soc_mreg_control *)kcontrol->private_value;
850 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
852 uinfo->value.integer.min = mc->min;
853 uinfo->value.integer.max = mc->max;
857 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
860 * snd_soc_get_xr_sx - signed multi register get callback
861 * @kcontrol: mreg control
862 * @ucontrol: control element information
864 * Callback to get the value of a control that can span
865 * multiple codec registers which together forms a single
866 * signed value in a MSB/LSB manner. The control supports
867 * specifying total no of bits used to allow for bitfields
868 * across the multiple codec registers.
870 * Returns 0 for success.
872 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
873 struct snd_ctl_elem_value *ucontrol)
875 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
876 struct soc_mreg_control *mc =
877 (struct soc_mreg_control *)kcontrol->private_value;
878 unsigned int regbase = mc->regbase;
879 unsigned int regcount = mc->regcount;
880 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
881 unsigned int regwmask = (1UL<<regwshift)-1;
882 unsigned int invert = mc->invert;
883 unsigned long mask = (1UL<<mc->nbits)-1;
889 for (i = 0; i < regcount; i++) {
890 unsigned int regval = snd_soc_component_read(component, regbase+i);
891 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
894 if (min < 0 && val > max)
898 ucontrol->value.integer.value[0] = val;
902 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
905 * snd_soc_put_xr_sx - signed multi register get callback
906 * @kcontrol: mreg control
907 * @ucontrol: control element information
909 * Callback to set the value of a control that can span
910 * multiple codec registers which together forms a single
911 * signed value in a MSB/LSB manner. The control supports
912 * specifying total no of bits used to allow for bitfields
913 * across the multiple codec registers.
915 * Returns 0 for success.
917 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
918 struct snd_ctl_elem_value *ucontrol)
920 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
921 struct soc_mreg_control *mc =
922 (struct soc_mreg_control *)kcontrol->private_value;
923 unsigned int regbase = mc->regbase;
924 unsigned int regcount = mc->regcount;
925 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
926 unsigned int regwmask = (1UL<<regwshift)-1;
927 unsigned int invert = mc->invert;
928 unsigned long mask = (1UL<<mc->nbits)-1;
930 long val = ucontrol->value.integer.value[0];
934 if (val < mc->min || val > mc->max)
939 for (i = 0; i < regcount; i++) {
940 unsigned int regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
941 unsigned int regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
942 int err = snd_soc_component_update_bits(component, regbase+i,
952 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
955 * snd_soc_get_strobe - strobe get callback
956 * @kcontrol: mixer control
957 * @ucontrol: control element information
959 * Callback get the value of a strobe mixer control.
961 * Returns 0 for success.
963 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
964 struct snd_ctl_elem_value *ucontrol)
966 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
967 struct soc_mixer_control *mc =
968 (struct soc_mixer_control *)kcontrol->private_value;
969 unsigned int reg = mc->reg;
970 unsigned int shift = mc->shift;
971 unsigned int mask = 1 << shift;
972 unsigned int invert = mc->invert != 0;
975 val = snd_soc_component_read(component, reg);
978 if (shift != 0 && val != 0)
980 ucontrol->value.enumerated.item[0] = val ^ invert;
984 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
987 * snd_soc_put_strobe - strobe put callback
988 * @kcontrol: mixer control
989 * @ucontrol: control element information
991 * Callback strobe a register bit to high then low (or the inverse)
992 * in one pass of a single mixer enum control.
994 * Returns 1 for success.
996 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
997 struct snd_ctl_elem_value *ucontrol)
999 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1000 struct soc_mixer_control *mc =
1001 (struct soc_mixer_control *)kcontrol->private_value;
1002 unsigned int reg = mc->reg;
1003 unsigned int shift = mc->shift;
1004 unsigned int mask = 1 << shift;
1005 unsigned int invert = mc->invert != 0;
1006 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
1007 unsigned int val1 = (strobe ^ invert) ? mask : 0;
1008 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
1011 err = snd_soc_component_update_bits(component, reg, mask, val1);
1015 return snd_soc_component_update_bits(component, reg, mask, val2);
1017 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);