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_l
) & 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 interprete 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_get_volsw - single mixer get callback
211 * @kcontrol: mixer control
212 * @ucontrol: control element information
214 * Callback to get the value of a single mixer control, or a double mixer
215 * control that spans 2 registers.
217 * Returns 0 for success.
219 int snd_soc_get_volsw(struct snd_kcontrol
*kcontrol
,
220 struct snd_ctl_elem_value
*ucontrol
)
222 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
223 struct soc_mixer_control
*mc
=
224 (struct soc_mixer_control
*)kcontrol
->private_value
;
225 unsigned int reg
= mc
->reg
;
226 unsigned int reg2
= mc
->rreg
;
227 unsigned int shift
= mc
->shift
;
228 unsigned int rshift
= mc
->rshift
;
231 int sign_bit
= mc
->sign_bit
;
232 unsigned int mask
= (1 << fls(max
)) - 1;
233 unsigned int invert
= mc
->invert
;
238 mask
= BIT(sign_bit
+ 1) - 1;
240 ret
= snd_soc_read_signed(component
, reg
, mask
, shift
, sign_bit
, &val
);
244 ucontrol
->value
.integer
.value
[0] = val
- min
;
246 ucontrol
->value
.integer
.value
[0] =
247 max
- ucontrol
->value
.integer
.value
[0];
249 if (snd_soc_volsw_is_stereo(mc
)) {
251 ret
= snd_soc_read_signed(component
, reg
, mask
, rshift
,
254 ret
= snd_soc_read_signed(component
, reg2
, mask
, shift
,
259 ucontrol
->value
.integer
.value
[1] = val
- min
;
261 ucontrol
->value
.integer
.value
[1] =
262 max
- ucontrol
->value
.integer
.value
[1];
267 EXPORT_SYMBOL_GPL(snd_soc_get_volsw
);
270 * snd_soc_put_volsw - single mixer put callback
271 * @kcontrol: mixer control
272 * @ucontrol: control element information
274 * Callback to set the value of a single mixer control, or a double mixer
275 * control that spans 2 registers.
277 * Returns 0 for success.
279 int snd_soc_put_volsw(struct snd_kcontrol
*kcontrol
,
280 struct snd_ctl_elem_value
*ucontrol
)
282 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
283 struct soc_mixer_control
*mc
=
284 (struct soc_mixer_control
*)kcontrol
->private_value
;
285 unsigned int reg
= mc
->reg
;
286 unsigned int reg2
= mc
->rreg
;
287 unsigned int shift
= mc
->shift
;
288 unsigned int rshift
= mc
->rshift
;
291 unsigned int sign_bit
= mc
->sign_bit
;
292 unsigned int mask
= (1 << fls(max
)) - 1;
293 unsigned int invert
= mc
->invert
;
295 bool type_2r
= false;
296 unsigned int val2
= 0;
297 unsigned int val
, val_mask
;
300 mask
= BIT(sign_bit
+ 1) - 1;
302 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
305 val_mask
= mask
<< shift
;
307 if (snd_soc_volsw_is_stereo(mc
)) {
308 val2
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
312 val_mask
|= mask
<< rshift
;
313 val
|= val2
<< rshift
;
315 val2
= val2
<< shift
;
319 err
= snd_soc_component_update_bits(component
, reg
, val_mask
, val
);
324 err
= snd_soc_component_update_bits(component
, reg2
, val_mask
,
329 EXPORT_SYMBOL_GPL(snd_soc_put_volsw
);
332 * snd_soc_get_volsw_sx - single mixer get callback
333 * @kcontrol: mixer control
334 * @ucontrol: control element information
336 * Callback to get the value of a single mixer control, or a double mixer
337 * control that spans 2 registers.
339 * Returns 0 for success.
341 int snd_soc_get_volsw_sx(struct snd_kcontrol
*kcontrol
,
342 struct snd_ctl_elem_value
*ucontrol
)
344 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
345 struct soc_mixer_control
*mc
=
346 (struct soc_mixer_control
*)kcontrol
->private_value
;
347 unsigned int reg
= mc
->reg
;
348 unsigned int reg2
= mc
->rreg
;
349 unsigned int shift
= mc
->shift
;
350 unsigned int rshift
= mc
->rshift
;
353 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
357 ret
= snd_soc_component_read(component
, reg
, &val
);
361 ucontrol
->value
.integer
.value
[0] = ((val
>> shift
) - min
) & mask
;
363 if (snd_soc_volsw_is_stereo(mc
)) {
364 ret
= snd_soc_component_read(component
, reg2
, &val
);
368 val
= ((val
>> rshift
) - min
) & mask
;
369 ucontrol
->value
.integer
.value
[1] = val
;
374 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx
);
377 * snd_soc_put_volsw_sx - double mixer set callback
378 * @kcontrol: mixer control
379 * @uinfo: control element information
381 * Callback to set the value of a double mixer control that spans 2 registers.
383 * Returns 0 for success.
385 int snd_soc_put_volsw_sx(struct snd_kcontrol
*kcontrol
,
386 struct snd_ctl_elem_value
*ucontrol
)
388 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
389 struct soc_mixer_control
*mc
=
390 (struct soc_mixer_control
*)kcontrol
->private_value
;
392 unsigned int reg
= mc
->reg
;
393 unsigned int reg2
= mc
->rreg
;
394 unsigned int shift
= mc
->shift
;
395 unsigned int rshift
= mc
->rshift
;
398 int mask
= (1 << (fls(min
+ max
) - 1)) - 1;
400 unsigned int val
, val_mask
, val2
= 0;
402 val_mask
= mask
<< shift
;
403 val
= (ucontrol
->value
.integer
.value
[0] + min
) & mask
;
406 err
= snd_soc_component_update_bits(component
, reg
, val_mask
, val
);
410 if (snd_soc_volsw_is_stereo(mc
)) {
411 val_mask
= mask
<< rshift
;
412 val2
= (ucontrol
->value
.integer
.value
[1] + min
) & mask
;
413 val2
= val2
<< rshift
;
415 err
= snd_soc_component_update_bits(component
, reg2
, val_mask
,
420 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx
);
423 * snd_soc_info_volsw_range - single mixer info callback with range.
424 * @kcontrol: mixer control
425 * @uinfo: control element information
427 * Callback to provide information, within a range, about a single
430 * returns 0 for success.
432 int snd_soc_info_volsw_range(struct snd_kcontrol
*kcontrol
,
433 struct snd_ctl_elem_info
*uinfo
)
435 struct soc_mixer_control
*mc
=
436 (struct soc_mixer_control
*)kcontrol
->private_value
;
440 if (!mc
->platform_max
)
441 mc
->platform_max
= mc
->max
;
442 platform_max
= mc
->platform_max
;
444 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
445 uinfo
->count
= snd_soc_volsw_is_stereo(mc
) ? 2 : 1;
446 uinfo
->value
.integer
.min
= 0;
447 uinfo
->value
.integer
.max
= platform_max
- min
;
451 EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range
);
454 * snd_soc_put_volsw_range - single mixer put value callback with range.
455 * @kcontrol: mixer control
456 * @ucontrol: control element information
458 * Callback to set the value, within a range, for a single mixer control.
460 * Returns 0 for success.
462 int snd_soc_put_volsw_range(struct snd_kcontrol
*kcontrol
,
463 struct snd_ctl_elem_value
*ucontrol
)
465 struct soc_mixer_control
*mc
=
466 (struct soc_mixer_control
*)kcontrol
->private_value
;
467 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
468 unsigned int reg
= mc
->reg
;
469 unsigned int rreg
= mc
->rreg
;
470 unsigned int shift
= mc
->shift
;
473 unsigned int mask
= (1 << fls(max
)) - 1;
474 unsigned int invert
= mc
->invert
;
475 unsigned int val
, val_mask
;
479 val
= (max
- ucontrol
->value
.integer
.value
[0]) & mask
;
481 val
= ((ucontrol
->value
.integer
.value
[0] + min
) & mask
);
482 val_mask
= mask
<< shift
;
485 ret
= snd_soc_component_update_bits(component
, reg
, val_mask
, val
);
489 if (snd_soc_volsw_is_stereo(mc
)) {
491 val
= (max
- ucontrol
->value
.integer
.value
[1]) & mask
;
493 val
= ((ucontrol
->value
.integer
.value
[1] + min
) & mask
);
494 val_mask
= mask
<< shift
;
497 ret
= snd_soc_component_update_bits(component
, rreg
, val_mask
,
503 EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range
);
506 * snd_soc_get_volsw_range - single mixer get callback with range
507 * @kcontrol: mixer control
508 * @ucontrol: control element information
510 * Callback to get the value, within a range, of a single mixer control.
512 * Returns 0 for success.
514 int snd_soc_get_volsw_range(struct snd_kcontrol
*kcontrol
,
515 struct snd_ctl_elem_value
*ucontrol
)
517 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
518 struct soc_mixer_control
*mc
=
519 (struct soc_mixer_control
*)kcontrol
->private_value
;
520 unsigned int reg
= mc
->reg
;
521 unsigned int rreg
= mc
->rreg
;
522 unsigned int shift
= mc
->shift
;
525 unsigned int mask
= (1 << fls(max
)) - 1;
526 unsigned int invert
= mc
->invert
;
530 ret
= snd_soc_component_read(component
, reg
, &val
);
534 ucontrol
->value
.integer
.value
[0] = (val
>> shift
) & mask
;
536 ucontrol
->value
.integer
.value
[0] =
537 max
- ucontrol
->value
.integer
.value
[0];
539 ucontrol
->value
.integer
.value
[0] =
540 ucontrol
->value
.integer
.value
[0] - min
;
542 if (snd_soc_volsw_is_stereo(mc
)) {
543 ret
= snd_soc_component_read(component
, rreg
, &val
);
547 ucontrol
->value
.integer
.value
[1] = (val
>> shift
) & mask
;
549 ucontrol
->value
.integer
.value
[1] =
550 max
- ucontrol
->value
.integer
.value
[1];
552 ucontrol
->value
.integer
.value
[1] =
553 ucontrol
->value
.integer
.value
[1] - min
;
558 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range
);
561 * snd_soc_limit_volume - Set new limit to an existing volume control.
563 * @codec: where to look for the control
564 * @name: Name of the control
565 * @max: new maximum limit
567 * Return 0 for success, else error.
569 int snd_soc_limit_volume(struct snd_soc_codec
*codec
,
570 const char *name
, int max
)
572 struct snd_card
*card
= codec
->component
.card
->snd_card
;
573 struct snd_kcontrol
*kctl
;
574 struct soc_mixer_control
*mc
;
578 /* Sanity check for name and max */
579 if (unlikely(!name
|| max
<= 0))
582 list_for_each_entry(kctl
, &card
->controls
, list
) {
583 if (!strncmp(kctl
->id
.name
, name
, sizeof(kctl
->id
.name
))) {
589 mc
= (struct soc_mixer_control
*)kctl
->private_value
;
590 if (max
<= mc
->max
) {
591 mc
->platform_max
= max
;
597 EXPORT_SYMBOL_GPL(snd_soc_limit_volume
);
599 int snd_soc_bytes_info(struct snd_kcontrol
*kcontrol
,
600 struct snd_ctl_elem_info
*uinfo
)
602 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
603 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
605 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
606 uinfo
->count
= params
->num_regs
* component
->val_bytes
;
610 EXPORT_SYMBOL_GPL(snd_soc_bytes_info
);
612 int snd_soc_bytes_get(struct snd_kcontrol
*kcontrol
,
613 struct snd_ctl_elem_value
*ucontrol
)
615 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
616 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
619 if (component
->regmap
)
620 ret
= regmap_raw_read(component
->regmap
, params
->base
,
621 ucontrol
->value
.bytes
.data
,
622 params
->num_regs
* component
->val_bytes
);
626 /* Hide any masked bytes to ensure consistent data reporting */
627 if (ret
== 0 && params
->mask
) {
628 switch (component
->val_bytes
) {
630 ucontrol
->value
.bytes
.data
[0] &= ~params
->mask
;
633 ((u16
*)(&ucontrol
->value
.bytes
.data
))[0]
634 &= cpu_to_be16(~params
->mask
);
637 ((u32
*)(&ucontrol
->value
.bytes
.data
))[0]
638 &= cpu_to_be32(~params
->mask
);
647 EXPORT_SYMBOL_GPL(snd_soc_bytes_get
);
649 int snd_soc_bytes_put(struct snd_kcontrol
*kcontrol
,
650 struct snd_ctl_elem_value
*ucontrol
)
652 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
653 struct soc_bytes
*params
= (void *)kcontrol
->private_value
;
655 unsigned int val
, mask
;
658 if (!component
->regmap
|| !params
->num_regs
)
661 len
= params
->num_regs
* component
->val_bytes
;
663 data
= kmemdup(ucontrol
->value
.bytes
.data
, len
, GFP_KERNEL
| GFP_DMA
);
668 * If we've got a mask then we need to preserve the register
669 * bits. We shouldn't modify the incoming data so take a
673 ret
= regmap_read(component
->regmap
, params
->base
, &val
);
679 switch (component
->val_bytes
) {
681 ((u8
*)data
)[0] &= ~params
->mask
;
682 ((u8
*)data
)[0] |= val
;
685 mask
= ~params
->mask
;
686 ret
= regmap_parse_val(component
->regmap
,
691 ((u16
*)data
)[0] &= mask
;
693 ret
= regmap_parse_val(component
->regmap
,
698 ((u16
*)data
)[0] |= val
;
701 mask
= ~params
->mask
;
702 ret
= regmap_parse_val(component
->regmap
,
707 ((u32
*)data
)[0] &= mask
;
709 ret
= regmap_parse_val(component
->regmap
,
714 ((u32
*)data
)[0] |= val
;
722 ret
= regmap_raw_write(component
->regmap
, params
->base
,
730 EXPORT_SYMBOL_GPL(snd_soc_bytes_put
);
732 int snd_soc_bytes_info_ext(struct snd_kcontrol
*kcontrol
,
733 struct snd_ctl_elem_info
*ucontrol
)
735 struct soc_bytes_ext
*params
= (void *)kcontrol
->private_value
;
737 ucontrol
->type
= SNDRV_CTL_ELEM_TYPE_BYTES
;
738 ucontrol
->count
= params
->max
;
742 EXPORT_SYMBOL_GPL(snd_soc_bytes_info_ext
);
744 int snd_soc_bytes_tlv_callback(struct snd_kcontrol
*kcontrol
, int op_flag
,
745 unsigned int size
, unsigned int __user
*tlv
)
747 struct soc_bytes_ext
*params
= (void *)kcontrol
->private_value
;
748 unsigned int count
= size
< params
->max
? size
: params
->max
;
752 case SNDRV_CTL_TLV_OP_READ
:
754 ret
= params
->get(tlv
, count
);
756 case SNDRV_CTL_TLV_OP_WRITE
:
758 ret
= params
->put(tlv
, count
);
763 EXPORT_SYMBOL_GPL(snd_soc_bytes_tlv_callback
);
766 * snd_soc_info_xr_sx - signed multi register info callback
767 * @kcontrol: mreg control
768 * @uinfo: control element information
770 * Callback to provide information of a control that can
771 * span multiple codec registers which together
772 * forms a single signed value in a MSB/LSB manner.
774 * Returns 0 for success.
776 int snd_soc_info_xr_sx(struct snd_kcontrol
*kcontrol
,
777 struct snd_ctl_elem_info
*uinfo
)
779 struct soc_mreg_control
*mc
=
780 (struct soc_mreg_control
*)kcontrol
->private_value
;
781 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
783 uinfo
->value
.integer
.min
= mc
->min
;
784 uinfo
->value
.integer
.max
= mc
->max
;
788 EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx
);
791 * snd_soc_get_xr_sx - signed multi register get callback
792 * @kcontrol: mreg control
793 * @ucontrol: control element information
795 * Callback to get the value of a control that can span
796 * multiple codec registers which together forms a single
797 * signed value in a MSB/LSB manner. The control supports
798 * specifying total no of bits used to allow for bitfields
799 * across the multiple codec registers.
801 * Returns 0 for success.
803 int snd_soc_get_xr_sx(struct snd_kcontrol
*kcontrol
,
804 struct snd_ctl_elem_value
*ucontrol
)
806 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
807 struct soc_mreg_control
*mc
=
808 (struct soc_mreg_control
*)kcontrol
->private_value
;
809 unsigned int regbase
= mc
->regbase
;
810 unsigned int regcount
= mc
->regcount
;
811 unsigned int regwshift
= component
->val_bytes
* BITS_PER_BYTE
;
812 unsigned int regwmask
= (1<<regwshift
)-1;
813 unsigned int invert
= mc
->invert
;
814 unsigned long mask
= (1UL<<mc
->nbits
)-1;
822 for (i
= 0; i
< regcount
; i
++) {
823 ret
= snd_soc_component_read(component
, regbase
+i
, ®val
);
826 val
|= (regval
& regwmask
) << (regwshift
*(regcount
-i
-1));
829 if (min
< 0 && val
> max
)
833 ucontrol
->value
.integer
.value
[0] = val
;
837 EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx
);
840 * snd_soc_put_xr_sx - signed multi register get callback
841 * @kcontrol: mreg control
842 * @ucontrol: control element information
844 * Callback to set 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_put_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
= (1<<regwshift
)-1;
862 unsigned int invert
= mc
->invert
;
863 unsigned long mask
= (1UL<<mc
->nbits
)-1;
865 long val
= ucontrol
->value
.integer
.value
[0];
866 unsigned int i
, regval
, regmask
;
872 for (i
= 0; i
< regcount
; i
++) {
873 regval
= (val
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
874 regmask
= (mask
>> (regwshift
*(regcount
-i
-1))) & regwmask
;
875 err
= snd_soc_component_update_bits(component
, regbase
+i
,
883 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx
);
886 * snd_soc_get_strobe - strobe get callback
887 * @kcontrol: mixer control
888 * @ucontrol: control element information
890 * Callback get the value of a strobe mixer control.
892 * Returns 0 for success.
894 int snd_soc_get_strobe(struct snd_kcontrol
*kcontrol
,
895 struct snd_ctl_elem_value
*ucontrol
)
897 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
898 struct soc_mixer_control
*mc
=
899 (struct soc_mixer_control
*)kcontrol
->private_value
;
900 unsigned int reg
= mc
->reg
;
901 unsigned int shift
= mc
->shift
;
902 unsigned int mask
= 1 << shift
;
903 unsigned int invert
= mc
->invert
!= 0;
907 ret
= snd_soc_component_read(component
, reg
, &val
);
913 if (shift
!= 0 && val
!= 0)
915 ucontrol
->value
.enumerated
.item
[0] = val
^ invert
;
919 EXPORT_SYMBOL_GPL(snd_soc_get_strobe
);
922 * snd_soc_put_strobe - strobe put callback
923 * @kcontrol: mixer control
924 * @ucontrol: control element information
926 * Callback strobe a register bit to high then low (or the inverse)
927 * in one pass of a single mixer enum control.
929 * Returns 1 for success.
931 int snd_soc_put_strobe(struct snd_kcontrol
*kcontrol
,
932 struct snd_ctl_elem_value
*ucontrol
)
934 struct snd_soc_component
*component
= snd_kcontrol_chip(kcontrol
);
935 struct soc_mixer_control
*mc
=
936 (struct soc_mixer_control
*)kcontrol
->private_value
;
937 unsigned int reg
= mc
->reg
;
938 unsigned int shift
= mc
->shift
;
939 unsigned int mask
= 1 << shift
;
940 unsigned int invert
= mc
->invert
!= 0;
941 unsigned int strobe
= ucontrol
->value
.enumerated
.item
[0] != 0;
942 unsigned int val1
= (strobe
^ invert
) ? mask
: 0;
943 unsigned int val2
= (strobe
^ invert
) ? 0 : mask
;
946 err
= snd_soc_component_update_bits(component
, reg
, mask
, val1
);
950 return snd_soc_component_update_bits(component
, reg
, mask
, val2
);
952 EXPORT_SYMBOL_GPL(snd_soc_put_strobe
);