2 * soc-ops.c -- Generic ASoC operations
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Copyright 2005 Openedhand Ltd.
6 * Copyright (C) 2010 Slimlogic Ltd.
7 * Copyright (C) 2010 Texas Instruments Inc.
9 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
10 * with code, comments and ideas from :-
11 * Richard Purdie <richard@openedhand.com>
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 #include <linux/module.h>
20 #include <linux/moduleparam.h>
21 #include <linux/init.h>
22 #include <linux/delay.h>
24 #include <linux/bitops.h>
25 #include <linux/ctype.h>
26 #include <linux/slab.h>
27 #include <sound/core.h>
28 #include <sound/jack.h>
29 #include <sound/pcm.h>
30 #include <sound/pcm_params.h>
31 #include <sound/soc.h>
32 #include <sound/soc-dpcm.h>
33 #include <sound/initval.h>
36 * snd_soc_info_enum_double - enumerated double mixer info callback
37 * @kcontrol: mixer control
38 * @uinfo: control element information
40 * Callback to provide information about a double enumerated
43 * Returns 0 for success.
45 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
46 struct snd_ctl_elem_info *uinfo)
48 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
50 return snd_ctl_enum_info(uinfo, e->shift_l == e->shift_r ? 1 : 2,
53 EXPORT_SYMBOL_GPL(snd_soc_info_enum_double);
56 * snd_soc_get_enum_double - enumerated double mixer get callback
57 * @kcontrol: mixer control
58 * @ucontrol: control element information
60 * Callback to get the value of a double enumerated mixer.
62 * Returns 0 for success.
64 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
65 struct snd_ctl_elem_value *ucontrol)
67 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
68 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
69 unsigned int val, item;
73 ret = snd_soc_component_read(component, e->reg, ®_val);
76 val = (reg_val >> e->shift_l) & e->mask;
77 item = snd_soc_enum_val_to_item(e, val);
78 ucontrol->value.enumerated.item[0] = item;
79 if (e->shift_l != e->shift_r) {
80 val = (reg_val >> e->shift_r) & e->mask;
81 item = snd_soc_enum_val_to_item(e, val);
82 ucontrol->value.enumerated.item[1] = item;
87 EXPORT_SYMBOL_GPL(snd_soc_get_enum_double);
90 * snd_soc_put_enum_double - enumerated double mixer put callback
91 * @kcontrol: mixer control
92 * @ucontrol: control element information
94 * Callback to set the value of a double enumerated mixer.
96 * Returns 0 for success.
98 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
99 struct snd_ctl_elem_value *ucontrol)
101 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
102 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
103 unsigned int *item = ucontrol->value.enumerated.item;
107 if (item[0] >= e->items)
109 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
110 mask = e->mask << e->shift_l;
111 if (e->shift_l != e->shift_r) {
112 if (item[1] >= e->items)
114 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
115 mask |= e->mask << e->shift_r;
118 return snd_soc_component_update_bits(component, e->reg, mask, val);
120 EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
123 * snd_soc_read_signed - Read a codec register and interpret as signed value
124 * @component: component
125 * @reg: Register to read
126 * @mask: Mask to use after shifting the register value
127 * @shift: Right shift of register value
128 * @sign_bit: Bit that describes if a number is negative or not.
129 * @signed_val: Pointer to where the read value should be stored
131 * This functions reads a codec register. The register value is shifted right
132 * by 'shift' bits and masked with the given 'mask'. Afterwards it translates
133 * the given registervalue into a signed integer if sign_bit is non-zero.
135 * Returns 0 on sucess, otherwise an error value
137 static int snd_soc_read_signed(struct snd_soc_component *component,
138 unsigned int reg, unsigned int mask, unsigned int shift,
139 unsigned int sign_bit, int *signed_val)
144 ret = snd_soc_component_read(component, reg, &val);
148 val = (val >> shift) & mask;
155 /* non-negative number */
156 if (!(val & BIT(sign_bit))) {
164 * The register most probably does not contain a full-sized int.
165 * Instead we have an arbitrary number of bits in a signed
166 * representation which has to be translated into a full-sized int.
167 * This is done by filling up all bits above the sign-bit.
169 ret |= ~((int)(BIT(sign_bit) - 1));
177 * snd_soc_info_volsw - single mixer info callback
178 * @kcontrol: mixer control
179 * @uinfo: control element information
181 * Callback to provide information about a single mixer control, or a double
182 * mixer control that spans 2 registers.
184 * Returns 0 for success.
186 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
187 struct snd_ctl_elem_info *uinfo)
189 struct soc_mixer_control *mc =
190 (struct soc_mixer_control *)kcontrol->private_value;
193 if (!mc->platform_max)
194 mc->platform_max = mc->max;
195 platform_max = mc->platform_max;
197 if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume"))
198 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
200 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
202 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
203 uinfo->value.integer.min = 0;
204 uinfo->value.integer.max = platform_max - mc->min;
207 EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
210 * snd_soc_info_volsw_sx - Mixer info callback for SX TLV controls
211 * @kcontrol: mixer control
212 * @uinfo: control element information
214 * Callback to provide information about a single mixer control, or a double
215 * mixer control that spans 2 registers of the SX TLV type. SX TLV controls
216 * have a range that represents both positive and negative values either side
217 * of zero but without a sign bit.
219 * Returns 0 for success.
221 int snd_soc_info_volsw_sx(struct snd_kcontrol *kcontrol,
222 struct snd_ctl_elem_info *uinfo)
224 struct soc_mixer_control *mc =
225 (struct soc_mixer_control *)kcontrol->private_value;
227 snd_soc_info_volsw(kcontrol, uinfo);
228 /* Max represents the number of levels in an SX control not the
229 * maximum value, so add the minimum value back on
231 uinfo->value.integer.max += mc->min;
235 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_sx);
238 * snd_soc_get_volsw - single mixer get callback
239 * @kcontrol: mixer control
240 * @ucontrol: control element information
242 * Callback to get the value of a single mixer control, or a double mixer
243 * control that spans 2 registers.
245 * Returns 0 for success.
247 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
248 struct snd_ctl_elem_value *ucontrol)
250 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
251 struct soc_mixer_control *mc =
252 (struct soc_mixer_control *)kcontrol->private_value;
253 unsigned int reg = mc->reg;
254 unsigned int reg2 = mc->rreg;
255 unsigned int shift = mc->shift;
256 unsigned int rshift = mc->rshift;
259 int sign_bit = mc->sign_bit;
260 unsigned int mask = (1 << fls(max)) - 1;
261 unsigned int invert = mc->invert;
266 mask = BIT(sign_bit + 1) - 1;
268 ret = snd_soc_read_signed(component, reg, mask, shift, sign_bit, &val);
272 ucontrol->value.integer.value[0] = val - min;
274 ucontrol->value.integer.value[0] =
275 max - ucontrol->value.integer.value[0];
277 if (snd_soc_volsw_is_stereo(mc)) {
279 ret = snd_soc_read_signed(component, reg, mask, rshift,
282 ret = snd_soc_read_signed(component, reg2, mask, shift,
287 ucontrol->value.integer.value[1] = val - min;
289 ucontrol->value.integer.value[1] =
290 max - ucontrol->value.integer.value[1];
295 EXPORT_SYMBOL_GPL(snd_soc_get_volsw);
298 * snd_soc_put_volsw - single mixer put callback
299 * @kcontrol: mixer control
300 * @ucontrol: control element information
302 * Callback to set the value of a single mixer control, or a double mixer
303 * control that spans 2 registers.
305 * Returns 0 for success.
307 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
308 struct snd_ctl_elem_value *ucontrol)
310 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
311 struct soc_mixer_control *mc =
312 (struct soc_mixer_control *)kcontrol->private_value;
313 unsigned int reg = mc->reg;
314 unsigned int reg2 = mc->rreg;
315 unsigned int shift = mc->shift;
316 unsigned int rshift = mc->rshift;
319 unsigned int sign_bit = mc->sign_bit;
320 unsigned int mask = (1 << fls(max)) - 1;
321 unsigned int invert = mc->invert;
323 bool type_2r = false;
324 unsigned int val2 = 0;
325 unsigned int val, val_mask;
328 mask = BIT(sign_bit + 1) - 1;
330 val = ucontrol->value.integer.value[0];
331 if (mc->platform_max && val > mc->platform_max)
337 val = (val + min) & mask;
340 val_mask = mask << shift;
342 if (snd_soc_volsw_is_stereo(mc)) {
343 val2 = ucontrol->value.integer.value[1];
344 if (mc->platform_max && val2 > mc->platform_max)
346 if (val2 > max - min)
350 val2 = (val2 + min) & mask;
354 val_mask |= mask << rshift;
355 val |= val2 << rshift;
357 val2 = val2 << shift;
361 err = snd_soc_component_update_bits(component, reg, val_mask, val);
366 err = snd_soc_component_update_bits(component, reg2, val_mask,
371 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
374 * snd_soc_get_volsw_sx - single mixer get callback
375 * @kcontrol: mixer control
376 * @ucontrol: control element information
378 * Callback to get the value of a single mixer control, or a double mixer
379 * control that spans 2 registers.
381 * Returns 0 for success.
383 int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
384 struct snd_ctl_elem_value *ucontrol)
386 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
387 struct soc_mixer_control *mc =
388 (struct soc_mixer_control *)kcontrol->private_value;
389 unsigned int reg = mc->reg;
390 unsigned int reg2 = mc->rreg;
391 unsigned int shift = mc->shift;
392 unsigned int rshift = mc->rshift;
395 int mask = (1 << (fls(min + max) - 1)) - 1;
399 ret = snd_soc_component_read(component, reg, &val);
403 ucontrol->value.integer.value[0] = ((val >> shift) - min) & mask;
405 if (snd_soc_volsw_is_stereo(mc)) {
406 ret = snd_soc_component_read(component, reg2, &val);
410 val = ((val >> rshift) - min) & mask;
411 ucontrol->value.integer.value[1] = val;
416 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx);
419 * snd_soc_put_volsw_sx - double mixer set callback
420 * @kcontrol: mixer control
421 * @ucontrol: control element information
423 * Callback to set the value of a double mixer control that spans 2 registers.
425 * Returns 0 for success.
427 int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
428 struct snd_ctl_elem_value *ucontrol)
430 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
431 struct soc_mixer_control *mc =
432 (struct soc_mixer_control *)kcontrol->private_value;
434 unsigned int reg = mc->reg;
435 unsigned int reg2 = mc->rreg;
436 unsigned int shift = mc->shift;
437 unsigned int rshift = mc->rshift;
440 int mask = (1 << (fls(min + max) - 1)) - 1;
442 unsigned int val, val_mask, val2 = 0;
444 val = ucontrol->value.integer.value[0];
445 if (mc->platform_max && val > mc->platform_max)
451 val_mask = mask << shift;
452 val = (val + min) & mask;
455 err = snd_soc_component_update_bits(component, reg, val_mask, val);
459 if (snd_soc_volsw_is_stereo(mc)) {
460 val_mask = mask << rshift;
461 val2 = (ucontrol->value.integer.value[1] + min) & mask;
462 val2 = val2 << rshift;
464 err = snd_soc_component_update_bits(component, reg2, val_mask,
469 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx);
472 * snd_soc_info_volsw_range - single mixer info callback with range.
473 * @kcontrol: mixer control
474 * @uinfo: control element information
476 * Callback to provide information, within a range, about a single
479 * returns 0 for success.
481 int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
482 struct snd_ctl_elem_info *uinfo)
484 struct soc_mixer_control *mc =
485 (struct soc_mixer_control *)kcontrol->private_value;
489 if (!mc->platform_max)
490 mc->platform_max = mc->max;
491 platform_max = mc->platform_max;
493 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
494 uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
495 uinfo->value.integer.min = 0;
496 uinfo->value.integer.max = platform_max - min;
500 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range);
503 * snd_soc_put_volsw_range - single mixer put value callback with range.
504 * @kcontrol: mixer control
505 * @ucontrol: control element information
507 * Callback to set the value, within a range, for a single mixer control.
509 * Returns 0 for success.
511 int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
512 struct snd_ctl_elem_value *ucontrol)
514 struct soc_mixer_control *mc =
515 (struct soc_mixer_control *)kcontrol->private_value;
516 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
517 unsigned int reg = mc->reg;
518 unsigned int rreg = mc->rreg;
519 unsigned int shift = mc->shift;
522 unsigned int mask = (1 << fls(max)) - 1;
523 unsigned int invert = mc->invert;
524 unsigned int val, val_mask;
528 val = (max - ucontrol->value.integer.value[0]) & mask;
530 val = ((ucontrol->value.integer.value[0] + min) & mask);
531 val_mask = mask << shift;
534 ret = snd_soc_component_update_bits(component, reg, val_mask, val);
538 if (snd_soc_volsw_is_stereo(mc)) {
540 val = (max - ucontrol->value.integer.value[1]) & mask;
542 val = ((ucontrol->value.integer.value[1] + min) & mask);
543 val_mask = mask << shift;
546 ret = snd_soc_component_update_bits(component, rreg, val_mask,
552 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range);
555 * snd_soc_get_volsw_range - single mixer get callback with range
556 * @kcontrol: mixer control
557 * @ucontrol: control element information
559 * Callback to get the value, within a range, of a single mixer control.
561 * Returns 0 for success.
563 int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
564 struct snd_ctl_elem_value *ucontrol)
566 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
567 struct soc_mixer_control *mc =
568 (struct soc_mixer_control *)kcontrol->private_value;
569 unsigned int reg = mc->reg;
570 unsigned int rreg = mc->rreg;
571 unsigned int shift = mc->shift;
574 unsigned int mask = (1 << fls(max)) - 1;
575 unsigned int invert = mc->invert;
579 ret = snd_soc_component_read(component, reg, &val);
583 ucontrol->value.integer.value[0] = (val >> shift) & mask;
585 ucontrol->value.integer.value[0] =
586 max - ucontrol->value.integer.value[0];
588 ucontrol->value.integer.value[0] =
589 ucontrol->value.integer.value[0] - min;
591 if (snd_soc_volsw_is_stereo(mc)) {
592 ret = snd_soc_component_read(component, rreg, &val);
596 ucontrol->value.integer.value[1] = (val >> shift) & mask;
598 ucontrol->value.integer.value[1] =
599 max - ucontrol->value.integer.value[1];
601 ucontrol->value.integer.value[1] =
602 ucontrol->value.integer.value[1] - min;
607 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
610 * snd_soc_limit_volume - Set new limit to an existing volume control.
612 * @card: where to look for the control
613 * @name: Name of the control
614 * @max: new maximum limit
616 * Return 0 for success, else error.
618 int snd_soc_limit_volume(struct snd_soc_card *card,
619 const char *name, int max)
621 struct snd_card *snd_card = card->snd_card;
622 struct snd_kcontrol *kctl;
623 struct soc_mixer_control *mc;
627 /* Sanity check for name and max */
628 if (unlikely(!name || max <= 0))
631 list_for_each_entry(kctl, &snd_card->controls, list) {
632 if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) {
638 mc = (struct soc_mixer_control *)kctl->private_value;
639 if (max <= mc->max) {
640 mc->platform_max = max;
646 EXPORT_SYMBOL_GPL(snd_soc_limit_volume);
648 int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
649 struct snd_ctl_elem_info *uinfo)
651 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
652 struct soc_bytes *params = (void *)kcontrol->private_value;
654 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
655 uinfo->count = params->num_regs * component->val_bytes;
659 EXPORT_SYMBOL_GPL(snd_soc_bytes_info);
661 int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
662 struct snd_ctl_elem_value *ucontrol)
664 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
665 struct soc_bytes *params = (void *)kcontrol->private_value;
668 if (component->regmap)
669 ret = regmap_raw_read(component->regmap, params->base,
670 ucontrol->value.bytes.data,
671 params->num_regs * component->val_bytes);
675 /* Hide any masked bytes to ensure consistent data reporting */
676 if (ret == 0 && params->mask) {
677 switch (component->val_bytes) {
679 ucontrol->value.bytes.data[0] &= ~params->mask;
682 ((u16 *)(&ucontrol->value.bytes.data))[0]
683 &= cpu_to_be16(~params->mask);
686 ((u32 *)(&ucontrol->value.bytes.data))[0]
687 &= cpu_to_be32(~params->mask);
696 EXPORT_SYMBOL_GPL(snd_soc_bytes_get);
698 int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
699 struct snd_ctl_elem_value *ucontrol)
701 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
702 struct soc_bytes *params = (void *)kcontrol->private_value;
704 unsigned int val, mask;
707 if (!component->regmap || !params->num_regs)
710 len = params->num_regs * component->val_bytes;
712 data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA);
717 * If we've got a mask then we need to preserve the register
718 * bits. We shouldn't modify the incoming data so take a
722 ret = regmap_read(component->regmap, params->base, &val);
728 switch (component->val_bytes) {
730 ((u8 *)data)[0] &= ~params->mask;
731 ((u8 *)data)[0] |= val;
734 mask = ~params->mask;
735 ret = regmap_parse_val(component->regmap,
740 ((u16 *)data)[0] &= mask;
742 ret = regmap_parse_val(component->regmap,
747 ((u16 *)data)[0] |= val;
750 mask = ~params->mask;
751 ret = regmap_parse_val(component->regmap,
756 ((u32 *)data)[0] &= mask;
758 ret = regmap_parse_val(component->regmap,
763 ((u32 *)data)[0] |= val;
771 ret = regmap_raw_write(component->regmap, params->base,
779 EXPORT_SYMBOL_GPL(snd_soc_bytes_put);
781 int snd_soc_bytes_info_ext(struct snd_kcontrol *kcontrol,
782 struct snd_ctl_elem_info *ucontrol)
784 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
786 ucontrol->type = SNDRV_CTL_ELEM_TYPE_BYTES;
787 ucontrol->count = params->max;
791 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext);
793 int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
794 unsigned int size, unsigned int __user *tlv)
796 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
797 unsigned int count = size < params->max ? size : params->max;
801 case SNDRV_CTL_TLV_OP_READ:
803 ret = params->get(kcontrol, tlv, count);
805 case SNDRV_CTL_TLV_OP_WRITE:
807 ret = params->put(kcontrol, tlv, count);
812 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback);
815 * snd_soc_info_xr_sx - signed multi register info callback
816 * @kcontrol: mreg control
817 * @uinfo: control element information
819 * Callback to provide information of a control that can
820 * span multiple codec registers which together
821 * forms a single signed value in a MSB/LSB manner.
823 * Returns 0 for success.
825 int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
826 struct snd_ctl_elem_info *uinfo)
828 struct soc_mreg_control *mc =
829 (struct soc_mreg_control *)kcontrol->private_value;
830 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
832 uinfo->value.integer.min = mc->min;
833 uinfo->value.integer.max = mc->max;
837 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx);
840 * snd_soc_get_xr_sx - signed multi register get callback
841 * @kcontrol: mreg control
842 * @ucontrol: control element information
844 * Callback to get the value of a control that can span
845 * multiple codec registers which together forms a single
846 * signed value in a MSB/LSB manner. The control supports
847 * specifying total no of bits used to allow for bitfields
848 * across the multiple codec registers.
850 * Returns 0 for success.
852 int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
853 struct snd_ctl_elem_value *ucontrol)
855 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
856 struct soc_mreg_control *mc =
857 (struct soc_mreg_control *)kcontrol->private_value;
858 unsigned int regbase = mc->regbase;
859 unsigned int regcount = mc->regcount;
860 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
861 unsigned int regwmask = (1UL<<regwshift)-1;
862 unsigned int invert = mc->invert;
863 unsigned long mask = (1UL<<mc->nbits)-1;
871 for (i = 0; i < regcount; i++) {
872 ret = snd_soc_component_read(component, regbase+i, ®val);
875 val |= (regval & regwmask) << (regwshift*(regcount-i-1));
878 if (min < 0 && val > max)
882 ucontrol->value.integer.value[0] = val;
886 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx);
889 * snd_soc_put_xr_sx - signed multi register get callback
890 * @kcontrol: mreg control
891 * @ucontrol: control element information
893 * Callback to set the value of a control that can span
894 * multiple codec registers which together forms a single
895 * signed value in a MSB/LSB manner. The control supports
896 * specifying total no of bits used to allow for bitfields
897 * across the multiple codec registers.
899 * Returns 0 for success.
901 int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
902 struct snd_ctl_elem_value *ucontrol)
904 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
905 struct soc_mreg_control *mc =
906 (struct soc_mreg_control *)kcontrol->private_value;
907 unsigned int regbase = mc->regbase;
908 unsigned int regcount = mc->regcount;
909 unsigned int regwshift = component->val_bytes * BITS_PER_BYTE;
910 unsigned int regwmask = (1UL<<regwshift)-1;
911 unsigned int invert = mc->invert;
912 unsigned long mask = (1UL<<mc->nbits)-1;
914 long val = ucontrol->value.integer.value[0];
915 unsigned int i, regval, regmask;
918 if (val < mc->min || val > mc->max)
923 for (i = 0; i < regcount; i++) {
924 regval = (val >> (regwshift*(regcount-i-1))) & regwmask;
925 regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask;
926 err = snd_soc_component_update_bits(component, regbase+i,
934 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
937 * snd_soc_get_strobe - strobe get callback
938 * @kcontrol: mixer control
939 * @ucontrol: control element information
941 * Callback get the value of a strobe mixer control.
943 * Returns 0 for success.
945 int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
946 struct snd_ctl_elem_value *ucontrol)
948 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
949 struct soc_mixer_control *mc =
950 (struct soc_mixer_control *)kcontrol->private_value;
951 unsigned int reg = mc->reg;
952 unsigned int shift = mc->shift;
953 unsigned int mask = 1 << shift;
954 unsigned int invert = mc->invert != 0;
958 ret = snd_soc_component_read(component, reg, &val);
964 if (shift != 0 && val != 0)
966 ucontrol->value.enumerated.item[0] = val ^ invert;
970 EXPORT_SYMBOL_GPL(snd_soc_get_strobe);
973 * snd_soc_put_strobe - strobe put callback
974 * @kcontrol: mixer control
975 * @ucontrol: control element information
977 * Callback strobe a register bit to high then low (or the inverse)
978 * in one pass of a single mixer enum control.
980 * Returns 1 for success.
982 int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
983 struct snd_ctl_elem_value *ucontrol)
985 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
986 struct soc_mixer_control *mc =
987 (struct soc_mixer_control *)kcontrol->private_value;
988 unsigned int reg = mc->reg;
989 unsigned int shift = mc->shift;
990 unsigned int mask = 1 << shift;
991 unsigned int invert = mc->invert != 0;
992 unsigned int strobe = ucontrol->value.enumerated.item[0] != 0;
993 unsigned int val1 = (strobe ^ invert) ? mask : 0;
994 unsigned int val2 = (strobe ^ invert) ? 0 : mask;
997 err = snd_soc_component_update_bits(component, reg, mask, val1);
1001 return snd_soc_component_update_bits(component, reg, mask, val2);
1003 EXPORT_SYMBOL_GPL(snd_soc_put_strobe);