2 * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * o Changes power status of internal codec blocks depending on the
14 * dynamic configuration of codec internal audio paths and active
16 * o Platform power domain - can support external components i.e. amps and
17 * mic/headphone insertion events.
18 * o Automatic Mic Bias support
19 * o Jack insertion power event initiation - e.g. hp insertion will enable
21 * o Delayed power down of audio subsystem to reduce pops between a quick
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/init.h>
29 #include <linux/async.h>
30 #include <linux/delay.h>
32 #include <linux/bitops.h>
33 #include <linux/platform_device.h>
34 #include <linux/jiffies.h>
35 #include <linux/debugfs.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/regulator/consumer.h>
38 #include <linux/clk.h>
39 #include <linux/slab.h>
40 #include <sound/core.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/initval.h>
46 #include <trace/events/asoc.h>
48 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
50 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
51 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
53 int (*connected
)(struct snd_soc_dapm_widget
*source
,
54 struct snd_soc_dapm_widget
*sink
));
55 static struct snd_soc_dapm_widget
*
56 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
57 const struct snd_soc_dapm_widget
*widget
);
59 /* dapm power sequences - make this per codec in the future */
60 static int dapm_up_seq
[] = {
61 [snd_soc_dapm_pre
] = 0,
62 [snd_soc_dapm_supply
] = 1,
63 [snd_soc_dapm_regulator_supply
] = 1,
64 [snd_soc_dapm_clock_supply
] = 1,
65 [snd_soc_dapm_micbias
] = 2,
66 [snd_soc_dapm_dai_link
] = 2,
67 [snd_soc_dapm_dai_in
] = 3,
68 [snd_soc_dapm_dai_out
] = 3,
69 [snd_soc_dapm_aif_in
] = 3,
70 [snd_soc_dapm_aif_out
] = 3,
71 [snd_soc_dapm_mic
] = 4,
72 [snd_soc_dapm_mux
] = 5,
73 [snd_soc_dapm_virt_mux
] = 5,
74 [snd_soc_dapm_value_mux
] = 5,
75 [snd_soc_dapm_dac
] = 6,
76 [snd_soc_dapm_switch
] = 7,
77 [snd_soc_dapm_mixer
] = 7,
78 [snd_soc_dapm_mixer_named_ctl
] = 7,
79 [snd_soc_dapm_pga
] = 8,
80 [snd_soc_dapm_adc
] = 9,
81 [snd_soc_dapm_out_drv
] = 10,
82 [snd_soc_dapm_hp
] = 10,
83 [snd_soc_dapm_spk
] = 10,
84 [snd_soc_dapm_line
] = 10,
85 [snd_soc_dapm_kcontrol
] = 11,
86 [snd_soc_dapm_post
] = 12,
89 static int dapm_down_seq
[] = {
90 [snd_soc_dapm_pre
] = 0,
91 [snd_soc_dapm_kcontrol
] = 1,
92 [snd_soc_dapm_adc
] = 2,
93 [snd_soc_dapm_hp
] = 3,
94 [snd_soc_dapm_spk
] = 3,
95 [snd_soc_dapm_line
] = 3,
96 [snd_soc_dapm_out_drv
] = 3,
97 [snd_soc_dapm_pga
] = 4,
98 [snd_soc_dapm_switch
] = 5,
99 [snd_soc_dapm_mixer_named_ctl
] = 5,
100 [snd_soc_dapm_mixer
] = 5,
101 [snd_soc_dapm_dac
] = 6,
102 [snd_soc_dapm_mic
] = 7,
103 [snd_soc_dapm_micbias
] = 8,
104 [snd_soc_dapm_mux
] = 9,
105 [snd_soc_dapm_virt_mux
] = 9,
106 [snd_soc_dapm_value_mux
] = 9,
107 [snd_soc_dapm_aif_in
] = 10,
108 [snd_soc_dapm_aif_out
] = 10,
109 [snd_soc_dapm_dai_in
] = 10,
110 [snd_soc_dapm_dai_out
] = 10,
111 [snd_soc_dapm_dai_link
] = 11,
112 [snd_soc_dapm_clock_supply
] = 12,
113 [snd_soc_dapm_regulator_supply
] = 12,
114 [snd_soc_dapm_supply
] = 12,
115 [snd_soc_dapm_post
] = 13,
118 static void pop_wait(u32 pop_time
)
121 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
124 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
132 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
137 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
138 dev_info(dev
, "%s", buf
);
144 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
146 return !list_empty(&w
->dirty
);
149 void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
151 if (!dapm_dirty_widget(w
)) {
152 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
154 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
157 EXPORT_SYMBOL_GPL(dapm_mark_dirty
);
159 void dapm_mark_io_dirty(struct snd_soc_dapm_context
*dapm
)
161 struct snd_soc_card
*card
= dapm
->card
;
162 struct snd_soc_dapm_widget
*w
;
164 mutex_lock(&card
->dapm_mutex
);
166 list_for_each_entry(w
, &card
->widgets
, list
) {
168 case snd_soc_dapm_input
:
169 case snd_soc_dapm_output
:
170 dapm_mark_dirty(w
, "Rechecking inputs and outputs");
177 mutex_unlock(&card
->dapm_mutex
);
179 EXPORT_SYMBOL_GPL(dapm_mark_io_dirty
);
181 /* create a new dapm widget */
182 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
183 const struct snd_soc_dapm_widget
*_widget
)
185 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
188 struct dapm_kcontrol_data
{
190 struct snd_soc_dapm_widget
*widget
;
191 struct list_head paths
;
192 struct snd_soc_dapm_widget_list
*wlist
;
195 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget
*widget
,
196 struct snd_kcontrol
*kcontrol
)
198 struct dapm_kcontrol_data
*data
;
199 struct soc_mixer_control
*mc
;
201 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
203 dev_err(widget
->dapm
->dev
,
204 "ASoC: can't allocate kcontrol data for %s\n",
209 INIT_LIST_HEAD(&data
->paths
);
211 switch (widget
->id
) {
212 case snd_soc_dapm_switch
:
213 case snd_soc_dapm_mixer
:
214 case snd_soc_dapm_mixer_named_ctl
:
215 mc
= (struct soc_mixer_control
*)kcontrol
->private_value
;
217 if (mc
->autodisable
) {
218 struct snd_soc_dapm_widget
template;
220 memset(&template, 0, sizeof(template));
221 template.reg
= mc
->reg
;
222 template.mask
= (1 << fls(mc
->max
)) - 1;
223 template.shift
= mc
->shift
;
225 template.off_val
= mc
->max
;
227 template.off_val
= 0;
228 template.on_val
= template.off_val
;
229 template.id
= snd_soc_dapm_kcontrol
;
230 template.name
= kcontrol
->id
.name
;
232 data
->value
= template.on_val
;
234 data
->widget
= snd_soc_dapm_new_control(widget
->dapm
,
246 kcontrol
->private_data
= data
;
251 static void dapm_kcontrol_free(struct snd_kcontrol
*kctl
)
253 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kctl
);
258 static struct snd_soc_dapm_widget_list
*dapm_kcontrol_get_wlist(
259 const struct snd_kcontrol
*kcontrol
)
261 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
266 static int dapm_kcontrol_add_widget(struct snd_kcontrol
*kcontrol
,
267 struct snd_soc_dapm_widget
*widget
)
269 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
270 struct snd_soc_dapm_widget_list
*new_wlist
;
274 n
= data
->wlist
->num_widgets
+ 1;
278 new_wlist
= krealloc(data
->wlist
,
279 sizeof(*new_wlist
) + sizeof(widget
) * n
, GFP_KERNEL
);
283 new_wlist
->widgets
[n
- 1] = widget
;
284 new_wlist
->num_widgets
= n
;
286 data
->wlist
= new_wlist
;
291 static void dapm_kcontrol_add_path(const struct snd_kcontrol
*kcontrol
,
292 struct snd_soc_dapm_path
*path
)
294 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
296 list_add_tail(&path
->list_kcontrol
, &data
->paths
);
299 snd_soc_dapm_add_path(data
->widget
->dapm
, data
->widget
,
300 path
->source
, NULL
, NULL
);
304 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol
*kcontrol
)
306 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
311 return data
->widget
->power
;
314 static struct list_head
*dapm_kcontrol_get_path_list(
315 const struct snd_kcontrol
*kcontrol
)
317 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
322 #define dapm_kcontrol_for_each_path(path, kcontrol) \
323 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
326 static unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol
*kcontrol
)
328 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
333 static bool dapm_kcontrol_set_value(const struct snd_kcontrol
*kcontrol
,
336 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
338 if (data
->value
== value
)
342 data
->widget
->on_val
= value
;
350 * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
351 * @kcontrol: The kcontrol
353 struct snd_soc_codec
*snd_soc_dapm_kcontrol_codec(struct snd_kcontrol
*kcontrol
)
355 return dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0]->codec
;
357 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec
);
359 static void dapm_reset(struct snd_soc_card
*card
)
361 struct snd_soc_dapm_widget
*w
;
363 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
365 list_for_each_entry(w
, &card
->widgets
, list
) {
366 w
->new_power
= w
->power
;
367 w
->power_checked
= false;
373 static int soc_widget_read(struct snd_soc_dapm_widget
*w
, int reg
)
376 return snd_soc_read(w
->codec
, reg
);
377 else if (w
->platform
)
378 return snd_soc_platform_read(w
->platform
, reg
);
380 dev_err(w
->dapm
->dev
, "ASoC: no valid widget read method\n");
384 static int soc_widget_write(struct snd_soc_dapm_widget
*w
, int reg
, int val
)
387 return snd_soc_write(w
->codec
, reg
, val
);
388 else if (w
->platform
)
389 return snd_soc_platform_write(w
->platform
, reg
, val
);
391 dev_err(w
->dapm
->dev
, "ASoC: no valid widget write method\n");
395 static inline void soc_widget_lock(struct snd_soc_dapm_widget
*w
)
397 if (w
->codec
&& !w
->codec
->using_regmap
)
398 mutex_lock(&w
->codec
->mutex
);
399 else if (w
->platform
)
400 mutex_lock(&w
->platform
->mutex
);
403 static inline void soc_widget_unlock(struct snd_soc_dapm_widget
*w
)
405 if (w
->codec
&& !w
->codec
->using_regmap
)
406 mutex_unlock(&w
->codec
->mutex
);
407 else if (w
->platform
)
408 mutex_unlock(&w
->platform
->mutex
);
411 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget
*w
,
412 unsigned short reg
, unsigned int mask
, unsigned int value
)
415 unsigned int old
, new;
418 if (w
->codec
&& w
->codec
->using_regmap
) {
419 ret
= regmap_update_bits_check(w
->codec
->control_data
,
420 reg
, mask
, value
, &change
);
425 ret
= soc_widget_read(w
, reg
);
427 soc_widget_unlock(w
);
432 new = (old
& ~mask
) | (value
& mask
);
435 ret
= soc_widget_write(w
, reg
, new);
437 soc_widget_unlock(w
);
441 soc_widget_unlock(w
);
448 * snd_soc_dapm_set_bias_level - set the bias level for the system
449 * @dapm: DAPM context
450 * @level: level to configure
452 * Configure the bias (power) levels for the SoC audio device.
454 * Returns 0 for success else error.
456 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
457 enum snd_soc_bias_level level
)
459 struct snd_soc_card
*card
= dapm
->card
;
462 trace_snd_soc_bias_level_start(card
, level
);
464 if (card
&& card
->set_bias_level
)
465 ret
= card
->set_bias_level(card
, dapm
, level
);
470 if (dapm
->codec
->driver
->set_bias_level
)
471 ret
= dapm
->codec
->driver
->set_bias_level(dapm
->codec
,
474 dapm
->bias_level
= level
;
475 } else if (!card
|| dapm
!= &card
->dapm
) {
476 dapm
->bias_level
= level
;
482 if (card
&& card
->set_bias_level_post
)
483 ret
= card
->set_bias_level_post(card
, dapm
, level
);
485 trace_snd_soc_bias_level_done(card
, level
);
490 /* set up initial codec paths */
491 static void dapm_set_path_status(struct snd_soc_dapm_widget
*w
,
492 struct snd_soc_dapm_path
*p
, int i
)
495 case snd_soc_dapm_switch
:
496 case snd_soc_dapm_mixer
:
497 case snd_soc_dapm_mixer_named_ctl
: {
499 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
500 w
->kcontrol_news
[i
].private_value
;
501 unsigned int reg
= mc
->reg
;
502 unsigned int shift
= mc
->shift
;
504 unsigned int mask
= (1 << fls(max
)) - 1;
505 unsigned int invert
= mc
->invert
;
507 val
= soc_widget_read(w
, reg
);
508 val
= (val
>> shift
) & mask
;
515 case snd_soc_dapm_mux
: {
516 struct soc_enum
*e
= (struct soc_enum
*)
517 w
->kcontrol_news
[i
].private_value
;
520 val
= soc_widget_read(w
, e
->reg
);
521 item
= (val
>> e
->shift_l
) & e
->mask
;
523 if (item
< e
->max
&& !strcmp(p
->name
, e
->texts
[item
]))
529 case snd_soc_dapm_virt_mux
: {
530 struct soc_enum
*e
= (struct soc_enum
*)
531 w
->kcontrol_news
[i
].private_value
;
534 /* since a virtual mux has no backing registers to
535 * decide which path to connect, it will try to match
536 * with the first enumeration. This is to ensure
537 * that the default mux choice (the first) will be
538 * correctly powered up during initialization.
540 if (!strcmp(p
->name
, e
->texts
[0]))
544 case snd_soc_dapm_value_mux
: {
545 struct soc_enum
*e
= (struct soc_enum
*)
546 w
->kcontrol_news
[i
].private_value
;
549 val
= soc_widget_read(w
, e
->reg
);
550 val
= (val
>> e
->shift_l
) & e
->mask
;
551 for (item
= 0; item
< e
->max
; item
++) {
552 if (val
== e
->values
[item
])
556 if (item
< e
->max
&& !strcmp(p
->name
, e
->texts
[item
]))
562 /* does not affect routing - always connected */
563 case snd_soc_dapm_pga
:
564 case snd_soc_dapm_out_drv
:
565 case snd_soc_dapm_output
:
566 case snd_soc_dapm_adc
:
567 case snd_soc_dapm_input
:
568 case snd_soc_dapm_siggen
:
569 case snd_soc_dapm_dac
:
570 case snd_soc_dapm_micbias
:
571 case snd_soc_dapm_vmid
:
572 case snd_soc_dapm_supply
:
573 case snd_soc_dapm_regulator_supply
:
574 case snd_soc_dapm_clock_supply
:
575 case snd_soc_dapm_aif_in
:
576 case snd_soc_dapm_aif_out
:
577 case snd_soc_dapm_dai_in
:
578 case snd_soc_dapm_dai_out
:
579 case snd_soc_dapm_hp
:
580 case snd_soc_dapm_mic
:
581 case snd_soc_dapm_spk
:
582 case snd_soc_dapm_line
:
583 case snd_soc_dapm_dai_link
:
584 case snd_soc_dapm_kcontrol
:
587 /* does affect routing - dynamically connected */
588 case snd_soc_dapm_pre
:
589 case snd_soc_dapm_post
:
595 /* connect mux widget to its interconnecting audio paths */
596 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
597 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
598 struct snd_soc_dapm_path
*path
, const char *control_name
,
599 const struct snd_kcontrol_new
*kcontrol
)
601 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
604 for (i
= 0; i
< e
->max
; i
++) {
605 if (!(strcmp(control_name
, e
->texts
[i
]))) {
606 list_add(&path
->list
, &dapm
->card
->paths
);
607 list_add(&path
->list_sink
, &dest
->sources
);
608 list_add(&path
->list_source
, &src
->sinks
);
609 path
->name
= (char*)e
->texts
[i
];
610 dapm_set_path_status(dest
, path
, 0);
618 /* connect mixer widget to its interconnecting audio paths */
619 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
620 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
621 struct snd_soc_dapm_path
*path
, const char *control_name
)
625 /* search for mixer kcontrol */
626 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
627 if (!strcmp(control_name
, dest
->kcontrol_news
[i
].name
)) {
628 list_add(&path
->list
, &dapm
->card
->paths
);
629 list_add(&path
->list_sink
, &dest
->sources
);
630 list_add(&path
->list_source
, &src
->sinks
);
631 path
->name
= dest
->kcontrol_news
[i
].name
;
632 dapm_set_path_status(dest
, path
, i
);
639 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
640 struct snd_soc_dapm_widget
*kcontrolw
,
641 const struct snd_kcontrol_new
*kcontrol_new
,
642 struct snd_kcontrol
**kcontrol
)
644 struct snd_soc_dapm_widget
*w
;
649 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
650 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
652 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
653 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
655 *kcontrol
= w
->kcontrols
[i
];
665 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
666 * create it. Either way, add the widget into the control's widget list
668 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget
*w
,
671 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
672 struct snd_card
*card
= dapm
->card
->snd_card
;
676 struct snd_kcontrol
*kcontrol
;
677 bool wname_in_long_name
, kcname_in_long_name
;
683 prefix
= dapm
->codec
->name_prefix
;
688 prefix_len
= strlen(prefix
) + 1;
692 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[kci
],
697 wname_in_long_name
= false;
698 kcname_in_long_name
= true;
701 case snd_soc_dapm_switch
:
702 case snd_soc_dapm_mixer
:
703 wname_in_long_name
= true;
704 kcname_in_long_name
= true;
706 case snd_soc_dapm_mixer_named_ctl
:
707 wname_in_long_name
= false;
708 kcname_in_long_name
= true;
710 case snd_soc_dapm_mux
:
711 case snd_soc_dapm_virt_mux
:
712 case snd_soc_dapm_value_mux
:
713 wname_in_long_name
= true;
714 kcname_in_long_name
= false;
721 if (wname_in_long_name
&& kcname_in_long_name
) {
723 * The control will get a prefix from the control
724 * creation process but we're also using the same
725 * prefix for widgets so cut the prefix off the
726 * front of the widget name.
728 long_name
= kasprintf(GFP_KERNEL
, "%s %s",
729 w
->name
+ prefix_len
,
730 w
->kcontrol_news
[kci
].name
);
731 if (long_name
== NULL
)
735 } else if (wname_in_long_name
) {
737 name
= w
->name
+ prefix_len
;
740 name
= w
->kcontrol_news
[kci
].name
;
743 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[kci
], NULL
, name
,
748 kcontrol
->private_free
= dapm_kcontrol_free
;
750 ret
= dapm_kcontrol_data_alloc(w
, kcontrol
);
752 snd_ctl_free_one(kcontrol
);
756 ret
= snd_ctl_add(card
, kcontrol
);
759 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
765 ret
= dapm_kcontrol_add_widget(kcontrol
, w
);
769 w
->kcontrols
[kci
] = kcontrol
;
774 /* create new dapm mixer control */
775 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
778 struct snd_soc_dapm_path
*path
;
781 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
783 list_for_each_entry(path
, &w
->sources
, list_sink
) {
784 /* mixer/mux paths name must match control name */
785 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
788 if (w
->kcontrols
[i
]) {
789 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
793 ret
= dapm_create_or_share_mixmux_kcontrol(w
, i
);
797 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
804 /* create new dapm mux control */
805 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
807 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
808 struct snd_soc_dapm_path
*path
;
811 if (w
->num_kcontrols
!= 1) {
813 "ASoC: mux %s has incorrect number of controls\n",
818 if (list_empty(&w
->sources
)) {
819 dev_err(dapm
->dev
, "ASoC: mux %s has no paths\n", w
->name
);
823 ret
= dapm_create_or_share_mixmux_kcontrol(w
, 0);
827 list_for_each_entry(path
, &w
->sources
, list_sink
)
828 dapm_kcontrol_add_path(w
->kcontrols
[0], path
);
833 /* create new dapm volume control */
834 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
836 if (w
->num_kcontrols
)
837 dev_err(w
->dapm
->dev
,
838 "ASoC: PGA controls not supported: '%s'\n", w
->name
);
843 /* reset 'walked' bit for each dapm path */
844 static void dapm_clear_walk_output(struct snd_soc_dapm_context
*dapm
,
845 struct list_head
*sink
)
847 struct snd_soc_dapm_path
*p
;
849 list_for_each_entry(p
, sink
, list_source
) {
852 dapm_clear_walk_output(dapm
, &p
->sink
->sinks
);
857 static void dapm_clear_walk_input(struct snd_soc_dapm_context
*dapm
,
858 struct list_head
*source
)
860 struct snd_soc_dapm_path
*p
;
862 list_for_each_entry(p
, source
, list_sink
) {
865 dapm_clear_walk_input(dapm
, &p
->source
->sources
);
871 /* We implement power down on suspend by checking the power state of
872 * the ALSA card - when we are suspending the ALSA state for the card
875 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
877 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
880 case SNDRV_CTL_POWER_D3hot
:
881 case SNDRV_CTL_POWER_D3cold
:
882 if (widget
->ignore_suspend
)
883 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
885 return widget
->ignore_suspend
;
891 /* add widget to list if it's not already in the list */
892 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list
**list
,
893 struct snd_soc_dapm_widget
*w
)
895 struct snd_soc_dapm_widget_list
*wlist
;
896 int wlistsize
, wlistentries
, i
;
903 /* is this widget already in the list */
904 for (i
= 0; i
< wlist
->num_widgets
; i
++) {
905 if (wlist
->widgets
[i
] == w
)
909 /* allocate some new space */
910 wlistentries
= wlist
->num_widgets
+ 1;
911 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
912 wlistentries
* sizeof(struct snd_soc_dapm_widget
*);
913 *list
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
915 dev_err(w
->dapm
->dev
, "ASoC: can't allocate widget list for %s\n",
921 /* insert the widget */
922 dev_dbg(w
->dapm
->dev
, "ASoC: added %s in widget list pos %d\n",
923 w
->name
, wlist
->num_widgets
);
925 wlist
->widgets
[wlist
->num_widgets
] = w
;
926 wlist
->num_widgets
++;
931 * Recursively check for a completed path to an active or physically connected
932 * output widget. Returns number of complete paths.
934 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
935 struct snd_soc_dapm_widget_list
**list
)
937 struct snd_soc_dapm_path
*path
;
940 if (widget
->outputs
>= 0)
941 return widget
->outputs
;
943 DAPM_UPDATE_STAT(widget
, path_checks
);
945 switch (widget
->id
) {
946 case snd_soc_dapm_supply
:
947 case snd_soc_dapm_regulator_supply
:
948 case snd_soc_dapm_clock_supply
:
949 case snd_soc_dapm_kcontrol
:
955 switch (widget
->id
) {
956 case snd_soc_dapm_adc
:
957 case snd_soc_dapm_aif_out
:
958 case snd_soc_dapm_dai_out
:
959 if (widget
->active
) {
960 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
961 return widget
->outputs
;
967 if (widget
->connected
) {
968 /* connected pin ? */
969 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
) {
970 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
971 return widget
->outputs
;
974 /* connected jack or spk ? */
975 if (widget
->id
== snd_soc_dapm_hp
||
976 widget
->id
== snd_soc_dapm_spk
||
977 (widget
->id
== snd_soc_dapm_line
&&
978 !list_empty(&widget
->sources
))) {
979 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
980 return widget
->outputs
;
984 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
985 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
996 trace_snd_soc_dapm_output_path(widget
, path
);
998 if (path
->sink
&& path
->connect
) {
1002 /* do we need to add this widget to the list ? */
1005 err
= dapm_list_add_widget(list
, path
->sink
);
1007 dev_err(widget
->dapm
->dev
,
1008 "ASoC: could not add widget %s\n",
1015 con
+= is_connected_output_ep(path
->sink
, list
);
1021 widget
->outputs
= con
;
1027 * Recursively check for a completed path to an active or physically connected
1028 * input widget. Returns number of complete paths.
1030 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
1031 struct snd_soc_dapm_widget_list
**list
)
1033 struct snd_soc_dapm_path
*path
;
1036 if (widget
->inputs
>= 0)
1037 return widget
->inputs
;
1039 DAPM_UPDATE_STAT(widget
, path_checks
);
1041 switch (widget
->id
) {
1042 case snd_soc_dapm_supply
:
1043 case snd_soc_dapm_regulator_supply
:
1044 case snd_soc_dapm_clock_supply
:
1045 case snd_soc_dapm_kcontrol
:
1051 /* active stream ? */
1052 switch (widget
->id
) {
1053 case snd_soc_dapm_dac
:
1054 case snd_soc_dapm_aif_in
:
1055 case snd_soc_dapm_dai_in
:
1056 if (widget
->active
) {
1057 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
1058 return widget
->inputs
;
1064 if (widget
->connected
) {
1065 /* connected pin ? */
1066 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
) {
1067 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
1068 return widget
->inputs
;
1071 /* connected VMID/Bias for lower pops */
1072 if (widget
->id
== snd_soc_dapm_vmid
) {
1073 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
1074 return widget
->inputs
;
1077 /* connected jack ? */
1078 if (widget
->id
== snd_soc_dapm_mic
||
1079 (widget
->id
== snd_soc_dapm_line
&&
1080 !list_empty(&widget
->sinks
))) {
1081 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
1082 return widget
->inputs
;
1085 /* signal generator */
1086 if (widget
->id
== snd_soc_dapm_siggen
) {
1087 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
1088 return widget
->inputs
;
1092 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
1093 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
1104 trace_snd_soc_dapm_input_path(widget
, path
);
1106 if (path
->source
&& path
->connect
) {
1110 /* do we need to add this widget to the list ? */
1113 err
= dapm_list_add_widget(list
, path
->source
);
1115 dev_err(widget
->dapm
->dev
,
1116 "ASoC: could not add widget %s\n",
1123 con
+= is_connected_input_ep(path
->source
, list
);
1129 widget
->inputs
= con
;
1135 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1136 * @dai: the soc DAI.
1137 * @stream: stream direction.
1138 * @list: list of active widgets for this stream.
1140 * Queries DAPM graph as to whether an valid audio stream path exists for
1141 * the initial stream specified by name. This takes into account
1142 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1144 * Returns the number of valid paths or negative error.
1146 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
1147 struct snd_soc_dapm_widget_list
**list
)
1149 struct snd_soc_card
*card
= dai
->card
;
1152 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1155 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
1156 paths
= is_connected_output_ep(dai
->playback_widget
, list
);
1157 dapm_clear_walk_output(&card
->dapm
,
1158 &dai
->playback_widget
->sinks
);
1160 paths
= is_connected_input_ep(dai
->capture_widget
, list
);
1161 dapm_clear_walk_input(&card
->dapm
,
1162 &dai
->capture_widget
->sources
);
1165 trace_snd_soc_dapm_connected(paths
, stream
);
1166 mutex_unlock(&card
->dapm_mutex
);
1172 * Handler for generic register modifier widget.
1174 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
1175 struct snd_kcontrol
*kcontrol
, int event
)
1179 if (SND_SOC_DAPM_EVENT_ON(event
))
1184 soc_widget_update_bits_locked(w
, -(w
->reg
+ 1),
1185 w
->mask
<< w
->shift
, val
<< w
->shift
);
1189 EXPORT_SYMBOL_GPL(dapm_reg_event
);
1192 * Handler for regulator supply widget.
1194 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1195 struct snd_kcontrol
*kcontrol
, int event
)
1199 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1200 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1201 ret
= regulator_allow_bypass(w
->regulator
, false);
1203 dev_warn(w
->dapm
->dev
,
1204 "ASoC: Failed to bypass %s: %d\n",
1208 return regulator_enable(w
->regulator
);
1210 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1211 ret
= regulator_allow_bypass(w
->regulator
, true);
1213 dev_warn(w
->dapm
->dev
,
1214 "ASoC: Failed to unbypass %s: %d\n",
1218 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1221 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1224 * Handler for clock supply widget.
1226 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1227 struct snd_kcontrol
*kcontrol
, int event
)
1232 #ifdef CONFIG_HAVE_CLK
1233 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1234 return clk_prepare_enable(w
->clk
);
1236 clk_disable_unprepare(w
->clk
);
1242 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1244 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1246 if (w
->power_checked
)
1247 return w
->new_power
;
1252 w
->new_power
= w
->power_check(w
);
1254 w
->power_checked
= true;
1256 return w
->new_power
;
1259 /* Generic check to see if a widget should be powered.
1261 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1265 DAPM_UPDATE_STAT(w
, power_checks
);
1267 in
= is_connected_input_ep(w
, NULL
);
1268 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1269 out
= is_connected_output_ep(w
, NULL
);
1270 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1271 return out
!= 0 && in
!= 0;
1274 /* Check to see if an ADC has power */
1275 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
1279 DAPM_UPDATE_STAT(w
, power_checks
);
1282 in
= is_connected_input_ep(w
, NULL
);
1283 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1286 return dapm_generic_check_power(w
);
1290 /* Check to see if a DAC has power */
1291 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
1295 DAPM_UPDATE_STAT(w
, power_checks
);
1298 out
= is_connected_output_ep(w
, NULL
);
1299 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1302 return dapm_generic_check_power(w
);
1306 /* Check to see if a power supply is needed */
1307 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1309 struct snd_soc_dapm_path
*path
;
1311 DAPM_UPDATE_STAT(w
, power_checks
);
1313 /* Check if one of our outputs is connected */
1314 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1315 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1320 if (path
->connected
&&
1321 !path
->connected(path
->source
, path
->sink
))
1327 if (dapm_widget_power_check(path
->sink
))
1334 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1339 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1340 struct snd_soc_dapm_widget
*b
,
1348 sort
= dapm_down_seq
;
1350 if (sort
[a
->id
] != sort
[b
->id
])
1351 return sort
[a
->id
] - sort
[b
->id
];
1352 if (a
->subseq
!= b
->subseq
) {
1354 return a
->subseq
- b
->subseq
;
1356 return b
->subseq
- a
->subseq
;
1358 if (a
->reg
!= b
->reg
)
1359 return a
->reg
- b
->reg
;
1360 if (a
->dapm
!= b
->dapm
)
1361 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1366 /* Insert a widget in order into a DAPM power sequence. */
1367 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1368 struct list_head
*list
,
1371 struct snd_soc_dapm_widget
*w
;
1373 list_for_each_entry(w
, list
, power_list
)
1374 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1375 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1379 list_add_tail(&new_widget
->power_list
, list
);
1382 static void dapm_seq_check_event(struct snd_soc_card
*card
,
1383 struct snd_soc_dapm_widget
*w
, int event
)
1385 const char *ev_name
;
1389 case SND_SOC_DAPM_PRE_PMU
:
1390 ev_name
= "PRE_PMU";
1393 case SND_SOC_DAPM_POST_PMU
:
1394 ev_name
= "POST_PMU";
1397 case SND_SOC_DAPM_PRE_PMD
:
1398 ev_name
= "PRE_PMD";
1401 case SND_SOC_DAPM_POST_PMD
:
1402 ev_name
= "POST_PMD";
1405 case SND_SOC_DAPM_WILL_PMU
:
1406 ev_name
= "WILL_PMU";
1409 case SND_SOC_DAPM_WILL_PMD
:
1410 ev_name
= "WILL_PMD";
1418 if (w
->new_power
!= power
)
1421 if (w
->event
&& (w
->event_flags
& event
)) {
1422 pop_dbg(w
->dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1424 trace_snd_soc_dapm_widget_event_start(w
, event
);
1425 ret
= w
->event(w
, NULL
, event
);
1426 trace_snd_soc_dapm_widget_event_done(w
, event
);
1428 dev_err(w
->dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1429 ev_name
, w
->name
, ret
);
1433 /* Apply the coalesced changes from a DAPM sequence */
1434 static void dapm_seq_run_coalesced(struct snd_soc_card
*card
,
1435 struct list_head
*pending
)
1437 struct snd_soc_dapm_widget
*w
;
1439 unsigned int value
= 0;
1440 unsigned int mask
= 0;
1442 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1445 list_for_each_entry(w
, pending
, power_list
) {
1446 BUG_ON(reg
!= w
->reg
);
1447 w
->power
= w
->new_power
;
1449 mask
|= w
->mask
<< w
->shift
;
1451 value
|= w
->on_val
<< w
->shift
;
1453 value
|= w
->off_val
<< w
->shift
;
1455 pop_dbg(w
->dapm
->dev
, card
->pop_time
,
1456 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1457 w
->name
, reg
, value
, mask
);
1459 /* Check for events */
1460 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMU
);
1461 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMD
);
1465 /* Any widget will do, they should all be updating the
1468 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1471 pop_dbg(w
->dapm
->dev
, card
->pop_time
,
1472 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1473 value
, mask
, reg
, card
->pop_time
);
1474 pop_wait(card
->pop_time
);
1475 soc_widget_update_bits_locked(w
, reg
, mask
, value
);
1478 list_for_each_entry(w
, pending
, power_list
) {
1479 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMU
);
1480 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMD
);
1484 /* Apply a DAPM power sequence.
1486 * We walk over a pre-sorted list of widgets to apply power to. In
1487 * order to minimise the number of writes to the device required
1488 * multiple widgets will be updated in a single write where possible.
1489 * Currently anything that requires more than a single write is not
1492 static void dapm_seq_run(struct snd_soc_card
*card
,
1493 struct list_head
*list
, int event
, bool power_up
)
1495 struct snd_soc_dapm_widget
*w
, *n
;
1498 int cur_subseq
= -1;
1499 int cur_reg
= SND_SOC_NOPM
;
1500 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1507 sort
= dapm_down_seq
;
1509 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1512 /* Do we need to apply any queued changes? */
1513 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1514 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1515 if (!list_empty(&pending
))
1516 dapm_seq_run_coalesced(card
, &pending
);
1518 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1519 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1520 if (sort
[i
] == cur_sort
)
1521 cur_dapm
->seq_notifier(cur_dapm
,
1526 INIT_LIST_HEAD(&pending
);
1528 cur_subseq
= INT_MIN
;
1529 cur_reg
= SND_SOC_NOPM
;
1534 case snd_soc_dapm_pre
:
1536 list_for_each_entry_safe_continue(w
, n
, list
,
1539 if (event
== SND_SOC_DAPM_STREAM_START
)
1541 NULL
, SND_SOC_DAPM_PRE_PMU
);
1542 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1544 NULL
, SND_SOC_DAPM_PRE_PMD
);
1547 case snd_soc_dapm_post
:
1549 list_for_each_entry_safe_continue(w
, n
, list
,
1552 if (event
== SND_SOC_DAPM_STREAM_START
)
1554 NULL
, SND_SOC_DAPM_POST_PMU
);
1555 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1557 NULL
, SND_SOC_DAPM_POST_PMD
);
1561 /* Queue it up for application */
1562 cur_sort
= sort
[w
->id
];
1563 cur_subseq
= w
->subseq
;
1566 list_move(&w
->power_list
, &pending
);
1571 dev_err(w
->dapm
->dev
,
1572 "ASoC: Failed to apply widget power: %d\n", ret
);
1575 if (!list_empty(&pending
))
1576 dapm_seq_run_coalesced(card
, &pending
);
1578 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1579 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1580 if (sort
[i
] == cur_sort
)
1581 cur_dapm
->seq_notifier(cur_dapm
,
1586 static void dapm_widget_update(struct snd_soc_card
*card
)
1588 struct snd_soc_dapm_update
*update
= card
->update
;
1589 struct snd_soc_dapm_widget_list
*wlist
;
1590 struct snd_soc_dapm_widget
*w
= NULL
;
1594 if (!update
|| !dapm_kcontrol_is_powered(update
->kcontrol
))
1597 wlist
= dapm_kcontrol_get_wlist(update
->kcontrol
);
1599 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1600 w
= wlist
->widgets
[wi
];
1602 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1603 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1605 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1613 ret
= soc_widget_update_bits_locked(w
, update
->reg
, update
->mask
,
1616 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1619 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1620 w
= wlist
->widgets
[wi
];
1622 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1623 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1625 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1631 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1632 * they're changing state.
1634 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1636 struct snd_soc_dapm_context
*d
= data
;
1639 /* If we're off and we're not supposed to be go into STANDBY */
1640 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1641 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1643 pm_runtime_get_sync(d
->dev
);
1645 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1648 "ASoC: Failed to turn on bias: %d\n", ret
);
1651 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1652 if (d
->bias_level
!= d
->target_bias_level
) {
1653 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1656 "ASoC: Failed to prepare bias: %d\n", ret
);
1660 /* Async callback run prior to DAPM sequences - brings to their final
1663 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1665 struct snd_soc_dapm_context
*d
= data
;
1668 /* If we just powered the last thing off drop to standby bias */
1669 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1670 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1671 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1672 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1674 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1678 /* If we're in standby and can support bias off then do that */
1679 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1680 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1681 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1683 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1687 pm_runtime_put(d
->dev
);
1690 /* If we just powered up then move to active bias */
1691 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1692 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1693 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1695 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1700 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1701 bool power
, bool connect
)
1703 /* If a connection is being made or broken then that update
1704 * will have marked the peer dirty, otherwise the widgets are
1705 * not connected and this update has no impact. */
1709 /* If the peer is already in the state we're moving to then we
1710 * won't have an impact on it. */
1711 if (power
!= peer
->power
)
1712 dapm_mark_dirty(peer
, "peer state change");
1715 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1716 struct list_head
*up_list
,
1717 struct list_head
*down_list
)
1719 struct snd_soc_dapm_path
*path
;
1721 if (w
->power
== power
)
1724 trace_snd_soc_dapm_widget_power(w
, power
);
1726 /* If we changed our power state perhaps our neigbours changed
1729 list_for_each_entry(path
, &w
->sources
, list_sink
) {
1731 dapm_widget_set_peer_power(path
->source
, power
,
1736 case snd_soc_dapm_supply
:
1737 case snd_soc_dapm_regulator_supply
:
1738 case snd_soc_dapm_clock_supply
:
1739 case snd_soc_dapm_kcontrol
:
1740 /* Supplies can't affect their outputs, only their inputs */
1743 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1745 dapm_widget_set_peer_power(path
->sink
, power
,
1753 dapm_seq_insert(w
, up_list
, true);
1755 dapm_seq_insert(w
, down_list
, false);
1758 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1759 struct list_head
*up_list
,
1760 struct list_head
*down_list
)
1765 case snd_soc_dapm_pre
:
1766 dapm_seq_insert(w
, down_list
, false);
1768 case snd_soc_dapm_post
:
1769 dapm_seq_insert(w
, up_list
, true);
1773 power
= dapm_widget_power_check(w
);
1775 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1781 * Scan each dapm widget for complete audio path.
1782 * A complete path is a route that has valid endpoints i.e.:-
1784 * o DAC to output pin.
1785 * o Input Pin to ADC.
1786 * o Input pin to Output pin (bypass, sidetone)
1787 * o DAC to ADC (loopback).
1789 static int dapm_power_widgets(struct snd_soc_card
*card
, int event
)
1791 struct snd_soc_dapm_widget
*w
;
1792 struct snd_soc_dapm_context
*d
;
1794 LIST_HEAD(down_list
);
1795 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1796 enum snd_soc_bias_level bias
;
1798 trace_snd_soc_dapm_start(card
);
1800 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1801 if (d
->idle_bias_off
)
1802 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1804 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1809 /* Check which widgets we need to power and store them in
1810 * lists indicating if they should be powered up or down. We
1811 * only check widgets that have been flagged as dirty but note
1812 * that new widgets may be added to the dirty list while we
1815 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1816 dapm_power_one_widget(w
, &up_list
, &down_list
);
1819 list_for_each_entry(w
, &card
->widgets
, list
) {
1821 case snd_soc_dapm_pre
:
1822 case snd_soc_dapm_post
:
1823 /* These widgets always need to be powered */
1826 list_del_init(&w
->dirty
);
1833 /* Supplies and micbiases only bring the
1834 * context up to STANDBY as unless something
1835 * else is active and passing audio they
1836 * generally don't require full power. Signal
1837 * generators are virtual pins and have no
1838 * power impact themselves.
1841 case snd_soc_dapm_siggen
:
1843 case snd_soc_dapm_supply
:
1844 case snd_soc_dapm_regulator_supply
:
1845 case snd_soc_dapm_clock_supply
:
1846 case snd_soc_dapm_micbias
:
1847 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1848 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1851 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1858 /* Force all contexts in the card to the same bias state if
1859 * they're not ground referenced.
1861 bias
= SND_SOC_BIAS_OFF
;
1862 list_for_each_entry(d
, &card
->dapm_list
, list
)
1863 if (d
->target_bias_level
> bias
)
1864 bias
= d
->target_bias_level
;
1865 list_for_each_entry(d
, &card
->dapm_list
, list
)
1866 if (!d
->idle_bias_off
)
1867 d
->target_bias_level
= bias
;
1869 trace_snd_soc_dapm_walk_done(card
);
1871 /* Run all the bias changes in parallel */
1872 list_for_each_entry(d
, &card
->dapm_list
, list
)
1873 async_schedule_domain(dapm_pre_sequence_async
, d
,
1875 async_synchronize_full_domain(&async_domain
);
1877 list_for_each_entry(w
, &down_list
, power_list
) {
1878 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMD
);
1881 list_for_each_entry(w
, &up_list
, power_list
) {
1882 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMU
);
1885 /* Power down widgets first; try to avoid amplifying pops. */
1886 dapm_seq_run(card
, &down_list
, event
, false);
1888 dapm_widget_update(card
);
1891 dapm_seq_run(card
, &up_list
, event
, true);
1893 /* Run all the bias changes in parallel */
1894 list_for_each_entry(d
, &card
->dapm_list
, list
)
1895 async_schedule_domain(dapm_post_sequence_async
, d
,
1897 async_synchronize_full_domain(&async_domain
);
1899 /* do we need to notify any clients that DAPM event is complete */
1900 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1901 if (d
->stream_event
)
1902 d
->stream_event(d
, event
);
1905 pop_dbg(card
->dev
, card
->pop_time
,
1906 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1907 pop_wait(card
->pop_time
);
1909 trace_snd_soc_dapm_done(card
);
1914 #ifdef CONFIG_DEBUG_FS
1915 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1916 char __user
*user_buf
,
1917 size_t count
, loff_t
*ppos
)
1919 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1923 struct snd_soc_dapm_path
*p
= NULL
;
1925 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1929 in
= is_connected_input_ep(w
, NULL
);
1930 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1931 out
= is_connected_output_ep(w
, NULL
);
1932 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1934 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1935 w
->name
, w
->power
? "On" : "Off",
1936 w
->force
? " (forced)" : "", in
, out
);
1939 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1940 " - R%d(0x%x) mask 0x%x",
1941 w
->reg
, w
->reg
, w
->mask
<< w
->shift
);
1943 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1946 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1948 w
->active
? "active" : "inactive");
1950 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1951 if (p
->connected
&& !p
->connected(w
, p
->source
))
1955 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1956 " in \"%s\" \"%s\"\n",
1957 p
->name
? p
->name
: "static",
1960 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1961 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1965 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1966 " out \"%s\" \"%s\"\n",
1967 p
->name
? p
->name
: "static",
1971 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1977 static const struct file_operations dapm_widget_power_fops
= {
1978 .open
= simple_open
,
1979 .read
= dapm_widget_power_read_file
,
1980 .llseek
= default_llseek
,
1983 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1984 size_t count
, loff_t
*ppos
)
1986 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1989 switch (dapm
->bias_level
) {
1990 case SND_SOC_BIAS_ON
:
1993 case SND_SOC_BIAS_PREPARE
:
1994 level
= "Prepare\n";
1996 case SND_SOC_BIAS_STANDBY
:
1997 level
= "Standby\n";
1999 case SND_SOC_BIAS_OFF
:
2004 level
= "Unknown\n";
2008 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
2012 static const struct file_operations dapm_bias_fops
= {
2013 .open
= simple_open
,
2014 .read
= dapm_bias_read_file
,
2015 .llseek
= default_llseek
,
2018 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2019 struct dentry
*parent
)
2023 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
2025 if (!dapm
->debugfs_dapm
) {
2027 "ASoC: Failed to create DAPM debugfs directory\n");
2031 d
= debugfs_create_file("bias_level", 0444,
2032 dapm
->debugfs_dapm
, dapm
,
2036 "ASoC: Failed to create bias level debugfs file\n");
2039 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2041 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
2044 if (!dapm
->debugfs_dapm
|| !w
->name
)
2047 d
= debugfs_create_file(w
->name
, 0444,
2048 dapm
->debugfs_dapm
, w
,
2049 &dapm_widget_power_fops
);
2051 dev_warn(w
->dapm
->dev
,
2052 "ASoC: Failed to create %s debugfs file\n",
2056 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2058 debugfs_remove_recursive(dapm
->debugfs_dapm
);
2062 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2063 struct dentry
*parent
)
2067 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2071 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2077 /* test and update the power status of a mux widget */
2078 static int soc_dapm_mux_update_power(struct snd_soc_card
*card
,
2079 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
2081 struct snd_soc_dapm_path
*path
;
2084 /* find dapm widget path assoc with kcontrol */
2085 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2086 if (!path
->name
|| !e
->texts
[mux
])
2090 /* we now need to match the string in the enum to the path */
2091 if (!(strcmp(path
->name
, e
->texts
[mux
]))) {
2092 path
->connect
= 1; /* new connection */
2093 dapm_mark_dirty(path
->source
, "mux connection");
2096 dapm_mark_dirty(path
->source
,
2097 "mux disconnection");
2098 path
->connect
= 0; /* old connection must be powered down */
2100 dapm_mark_dirty(path
->sink
, "mux change");
2104 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2109 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context
*dapm
,
2110 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
,
2111 struct snd_soc_dapm_update
*update
)
2113 struct snd_soc_card
*card
= dapm
->card
;
2116 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2117 card
->update
= update
;
2118 ret
= soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
2119 card
->update
= NULL
;
2120 mutex_unlock(&card
->dapm_mutex
);
2122 soc_dpcm_runtime_update(card
);
2125 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
2127 /* test and update the power status of a mixer or switch widget */
2128 static int soc_dapm_mixer_update_power(struct snd_soc_card
*card
,
2129 struct snd_kcontrol
*kcontrol
, int connect
)
2131 struct snd_soc_dapm_path
*path
;
2134 /* find dapm widget path assoc with kcontrol */
2135 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2137 path
->connect
= connect
;
2138 dapm_mark_dirty(path
->source
, "mixer connection");
2139 dapm_mark_dirty(path
->sink
, "mixer update");
2143 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2148 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context
*dapm
,
2149 struct snd_kcontrol
*kcontrol
, int connect
,
2150 struct snd_soc_dapm_update
*update
)
2152 struct snd_soc_card
*card
= dapm
->card
;
2155 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2156 card
->update
= update
;
2157 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
2158 card
->update
= NULL
;
2159 mutex_unlock(&card
->dapm_mutex
);
2161 soc_dpcm_runtime_update(card
);
2164 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
2166 /* show dapm widget status in sys fs */
2167 static ssize_t
dapm_widget_show(struct device
*dev
,
2168 struct device_attribute
*attr
, char *buf
)
2170 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2171 struct snd_soc_codec
*codec
=rtd
->codec
;
2172 struct snd_soc_dapm_widget
*w
;
2174 char *state
= "not set";
2176 list_for_each_entry(w
, &codec
->card
->widgets
, list
) {
2177 if (w
->dapm
!= &codec
->dapm
)
2180 /* only display widgets that burnm power */
2182 case snd_soc_dapm_hp
:
2183 case snd_soc_dapm_mic
:
2184 case snd_soc_dapm_spk
:
2185 case snd_soc_dapm_line
:
2186 case snd_soc_dapm_micbias
:
2187 case snd_soc_dapm_dac
:
2188 case snd_soc_dapm_adc
:
2189 case snd_soc_dapm_pga
:
2190 case snd_soc_dapm_out_drv
:
2191 case snd_soc_dapm_mixer
:
2192 case snd_soc_dapm_mixer_named_ctl
:
2193 case snd_soc_dapm_supply
:
2194 case snd_soc_dapm_regulator_supply
:
2195 case snd_soc_dapm_clock_supply
:
2197 count
+= sprintf(buf
+ count
, "%s: %s\n",
2198 w
->name
, w
->power
? "On":"Off");
2205 switch (codec
->dapm
.bias_level
) {
2206 case SND_SOC_BIAS_ON
:
2209 case SND_SOC_BIAS_PREPARE
:
2212 case SND_SOC_BIAS_STANDBY
:
2215 case SND_SOC_BIAS_OFF
:
2219 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2224 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2226 int snd_soc_dapm_sys_add(struct device
*dev
)
2228 return device_create_file(dev
, &dev_attr_dapm_widget
);
2231 static void snd_soc_dapm_sys_remove(struct device
*dev
)
2233 device_remove_file(dev
, &dev_attr_dapm_widget
);
2236 static void dapm_free_path(struct snd_soc_dapm_path
*path
)
2238 list_del(&path
->list_sink
);
2239 list_del(&path
->list_source
);
2240 list_del(&path
->list_kcontrol
);
2241 list_del(&path
->list
);
2245 /* free all dapm widgets and resources */
2246 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2248 struct snd_soc_dapm_widget
*w
, *next_w
;
2249 struct snd_soc_dapm_path
*p
, *next_p
;
2251 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2252 if (w
->dapm
!= dapm
)
2256 * remove source and sink paths associated to this widget.
2257 * While removing the path, remove reference to it from both
2258 * source and sink widgets so that path is removed only once.
2260 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
)
2263 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
)
2266 kfree(w
->kcontrols
);
2272 static struct snd_soc_dapm_widget
*dapm_find_widget(
2273 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2274 bool search_other_contexts
)
2276 struct snd_soc_dapm_widget
*w
;
2277 struct snd_soc_dapm_widget
*fallback
= NULL
;
2279 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2280 if (!strcmp(w
->name
, pin
)) {
2281 if (w
->dapm
== dapm
)
2288 if (search_other_contexts
)
2294 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2295 const char *pin
, int status
)
2297 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2300 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2304 if (w
->connected
!= status
)
2305 dapm_mark_dirty(w
, "pin configuration");
2307 w
->connected
= status
;
2315 * snd_soc_dapm_sync - scan and power dapm paths
2316 * @dapm: DAPM context
2318 * Walks all dapm audio paths and powers widgets according to their
2319 * stream or path usage.
2321 * Returns 0 for success.
2323 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2328 * Suppress early reports (eg, jacks syncing their state) to avoid
2329 * silly DAPM runs during card startup.
2331 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2334 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2335 ret
= dapm_power_widgets(dapm
->card
, SND_SOC_DAPM_STREAM_NOP
);
2336 mutex_unlock(&dapm
->card
->dapm_mutex
);
2339 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2341 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
2342 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
2343 const char *control
,
2344 int (*connected
)(struct snd_soc_dapm_widget
*source
,
2345 struct snd_soc_dapm_widget
*sink
))
2347 struct snd_soc_dapm_path
*path
;
2350 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2354 path
->source
= wsource
;
2356 path
->connected
= connected
;
2357 INIT_LIST_HEAD(&path
->list
);
2358 INIT_LIST_HEAD(&path
->list_kcontrol
);
2359 INIT_LIST_HEAD(&path
->list_source
);
2360 INIT_LIST_HEAD(&path
->list_sink
);
2362 /* check for external widgets */
2363 if (wsink
->id
== snd_soc_dapm_input
) {
2364 if (wsource
->id
== snd_soc_dapm_micbias
||
2365 wsource
->id
== snd_soc_dapm_mic
||
2366 wsource
->id
== snd_soc_dapm_line
||
2367 wsource
->id
== snd_soc_dapm_output
)
2370 if (wsource
->id
== snd_soc_dapm_output
) {
2371 if (wsink
->id
== snd_soc_dapm_spk
||
2372 wsink
->id
== snd_soc_dapm_hp
||
2373 wsink
->id
== snd_soc_dapm_line
||
2374 wsink
->id
== snd_soc_dapm_input
)
2378 dapm_mark_dirty(wsource
, "Route added");
2379 dapm_mark_dirty(wsink
, "Route added");
2381 /* connect static paths */
2382 if (control
== NULL
) {
2383 list_add(&path
->list
, &dapm
->card
->paths
);
2384 list_add(&path
->list_sink
, &wsink
->sources
);
2385 list_add(&path
->list_source
, &wsource
->sinks
);
2390 /* connect dynamic paths */
2391 switch (wsink
->id
) {
2392 case snd_soc_dapm_adc
:
2393 case snd_soc_dapm_dac
:
2394 case snd_soc_dapm_pga
:
2395 case snd_soc_dapm_out_drv
:
2396 case snd_soc_dapm_input
:
2397 case snd_soc_dapm_output
:
2398 case snd_soc_dapm_siggen
:
2399 case snd_soc_dapm_micbias
:
2400 case snd_soc_dapm_vmid
:
2401 case snd_soc_dapm_pre
:
2402 case snd_soc_dapm_post
:
2403 case snd_soc_dapm_supply
:
2404 case snd_soc_dapm_regulator_supply
:
2405 case snd_soc_dapm_clock_supply
:
2406 case snd_soc_dapm_aif_in
:
2407 case snd_soc_dapm_aif_out
:
2408 case snd_soc_dapm_dai_in
:
2409 case snd_soc_dapm_dai_out
:
2410 case snd_soc_dapm_dai_link
:
2411 case snd_soc_dapm_kcontrol
:
2412 list_add(&path
->list
, &dapm
->card
->paths
);
2413 list_add(&path
->list_sink
, &wsink
->sources
);
2414 list_add(&path
->list_source
, &wsource
->sinks
);
2417 case snd_soc_dapm_mux
:
2418 case snd_soc_dapm_virt_mux
:
2419 case snd_soc_dapm_value_mux
:
2420 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
2421 &wsink
->kcontrol_news
[0]);
2425 case snd_soc_dapm_switch
:
2426 case snd_soc_dapm_mixer
:
2427 case snd_soc_dapm_mixer_named_ctl
:
2428 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
2432 case snd_soc_dapm_hp
:
2433 case snd_soc_dapm_mic
:
2434 case snd_soc_dapm_line
:
2435 case snd_soc_dapm_spk
:
2436 list_add(&path
->list
, &dapm
->card
->paths
);
2437 list_add(&path
->list_sink
, &wsink
->sources
);
2438 list_add(&path
->list_source
, &wsource
->sinks
);
2449 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2450 const struct snd_soc_dapm_route
*route
)
2452 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2453 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2456 char prefixed_sink
[80];
2457 char prefixed_source
[80];
2460 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2461 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2462 dapm
->codec
->name_prefix
, route
->sink
);
2463 sink
= prefixed_sink
;
2464 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2465 dapm
->codec
->name_prefix
, route
->source
);
2466 source
= prefixed_source
;
2469 source
= route
->source
;
2473 * find src and dest widgets over all widgets but favor a widget from
2474 * current DAPM context
2476 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2477 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2479 if (w
->dapm
== dapm
)
2483 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2485 if (w
->dapm
== dapm
)
2489 /* use widget from another DAPM context if not found from this */
2495 if (wsource
== NULL
) {
2496 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2500 if (wsink
== NULL
) {
2501 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2506 ret
= snd_soc_dapm_add_path(dapm
, wsource
, wsink
, route
->control
,
2513 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2514 source
, route
->control
, sink
);
2518 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2519 const struct snd_soc_dapm_route
*route
)
2521 struct snd_soc_dapm_path
*path
, *p
;
2524 char prefixed_sink
[80];
2525 char prefixed_source
[80];
2527 if (route
->control
) {
2529 "ASoC: Removal of routes with controls not supported\n");
2533 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2534 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2535 dapm
->codec
->name_prefix
, route
->sink
);
2536 sink
= prefixed_sink
;
2537 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2538 dapm
->codec
->name_prefix
, route
->source
);
2539 source
= prefixed_source
;
2542 source
= route
->source
;
2546 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2547 if (strcmp(p
->source
->name
, source
) != 0)
2549 if (strcmp(p
->sink
->name
, sink
) != 0)
2556 dapm_mark_dirty(path
->source
, "Route removed");
2557 dapm_mark_dirty(path
->sink
, "Route removed");
2559 dapm_free_path(path
);
2561 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
2569 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2570 * @dapm: DAPM context
2571 * @route: audio routes
2572 * @num: number of routes
2574 * Connects 2 dapm widgets together via a named audio path. The sink is
2575 * the widget receiving the audio signal, whilst the source is the sender
2576 * of the audio signal.
2578 * Returns 0 for success else error. On error all resources can be freed
2579 * with a call to snd_soc_card_free().
2581 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2582 const struct snd_soc_dapm_route
*route
, int num
)
2586 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2587 for (i
= 0; i
< num
; i
++) {
2588 r
= snd_soc_dapm_add_route(dapm
, route
);
2590 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
2592 route
->control
? route
->control
: "direct",
2598 mutex_unlock(&dapm
->card
->dapm_mutex
);
2602 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2605 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2606 * @dapm: DAPM context
2607 * @route: audio routes
2608 * @num: number of routes
2610 * Removes routes from the DAPM context.
2612 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2613 const struct snd_soc_dapm_route
*route
, int num
)
2617 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2618 for (i
= 0; i
< num
; i
++) {
2619 snd_soc_dapm_del_route(dapm
, route
);
2622 mutex_unlock(&dapm
->card
->dapm_mutex
);
2626 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2628 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2629 const struct snd_soc_dapm_route
*route
)
2631 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2634 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2637 struct snd_soc_dapm_path
*path
;
2641 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
2647 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
2652 if (route
->control
|| route
->connected
)
2653 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
2654 route
->source
, route
->sink
);
2656 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2657 if (path
->sink
== sink
) {
2664 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
2665 route
->source
, route
->sink
);
2667 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
2668 count
, route
->source
, route
->sink
);
2674 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2675 * @dapm: DAPM context
2676 * @route: audio routes
2677 * @num: number of routes
2679 * Mark existing routes matching those specified in the passed array
2680 * as being weak, meaning that they are ignored for the purpose of
2681 * power decisions. The main intended use case is for sidetone paths
2682 * which couple audio between other independent paths if they are both
2683 * active in order to make the combination work better at the user
2684 * level but which aren't intended to be "used".
2686 * Note that CODEC drivers should not use this as sidetone type paths
2687 * can frequently also be used as bypass paths.
2689 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2690 const struct snd_soc_dapm_route
*route
, int num
)
2695 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2696 for (i
= 0; i
< num
; i
++) {
2697 err
= snd_soc_dapm_weak_route(dapm
, route
);
2702 mutex_unlock(&dapm
->card
->dapm_mutex
);
2706 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2709 * snd_soc_dapm_new_widgets - add new dapm widgets
2710 * @dapm: DAPM context
2712 * Checks the codec for any new dapm widgets and creates them if found.
2714 * Returns 0 for success.
2716 int snd_soc_dapm_new_widgets(struct snd_soc_card
*card
)
2718 struct snd_soc_dapm_widget
*w
;
2721 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2723 list_for_each_entry(w
, &card
->widgets
, list
)
2728 if (w
->num_kcontrols
) {
2729 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2730 sizeof(struct snd_kcontrol
*),
2732 if (!w
->kcontrols
) {
2733 mutex_unlock(&card
->dapm_mutex
);
2739 case snd_soc_dapm_switch
:
2740 case snd_soc_dapm_mixer
:
2741 case snd_soc_dapm_mixer_named_ctl
:
2744 case snd_soc_dapm_mux
:
2745 case snd_soc_dapm_virt_mux
:
2746 case snd_soc_dapm_value_mux
:
2749 case snd_soc_dapm_pga
:
2750 case snd_soc_dapm_out_drv
:
2757 /* Read the initial power state from the device */
2759 val
= soc_widget_read(w
, w
->reg
) >> w
->shift
;
2761 if (val
== w
->on_val
)
2767 dapm_mark_dirty(w
, "new widget");
2768 dapm_debugfs_add_widget(w
);
2771 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2772 mutex_unlock(&card
->dapm_mutex
);
2775 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2778 * snd_soc_dapm_get_volsw - dapm mixer get callback
2779 * @kcontrol: mixer control
2780 * @ucontrol: control element information
2782 * Callback to get the value of a dapm mixer control.
2784 * Returns 0 for success.
2786 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2787 struct snd_ctl_elem_value
*ucontrol
)
2789 struct snd_soc_codec
*codec
= snd_soc_dapm_kcontrol_codec(kcontrol
);
2790 struct snd_soc_card
*card
= codec
->card
;
2791 struct soc_mixer_control
*mc
=
2792 (struct soc_mixer_control
*)kcontrol
->private_value
;
2793 unsigned int reg
= mc
->reg
;
2794 unsigned int shift
= mc
->shift
;
2796 unsigned int mask
= (1 << fls(max
)) - 1;
2797 unsigned int invert
= mc
->invert
;
2800 if (snd_soc_volsw_is_stereo(mc
))
2801 dev_warn(codec
->dapm
.dev
,
2802 "ASoC: Control '%s' is stereo, which is not supported\n",
2805 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2806 if (dapm_kcontrol_is_powered(kcontrol
))
2807 val
= (snd_soc_read(codec
, reg
) >> shift
) & mask
;
2809 val
= dapm_kcontrol_get_value(kcontrol
);
2810 mutex_unlock(&card
->dapm_mutex
);
2813 ucontrol
->value
.integer
.value
[0] = max
- val
;
2815 ucontrol
->value
.integer
.value
[0] = val
;
2819 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2822 * snd_soc_dapm_put_volsw - dapm mixer set callback
2823 * @kcontrol: mixer control
2824 * @ucontrol: control element information
2826 * Callback to set the value of a dapm mixer control.
2828 * Returns 0 for success.
2830 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
2831 struct snd_ctl_elem_value
*ucontrol
)
2833 struct snd_soc_codec
*codec
= snd_soc_dapm_kcontrol_codec(kcontrol
);
2834 struct snd_soc_card
*card
= codec
->card
;
2835 struct soc_mixer_control
*mc
=
2836 (struct soc_mixer_control
*)kcontrol
->private_value
;
2837 unsigned int reg
= mc
->reg
;
2838 unsigned int shift
= mc
->shift
;
2840 unsigned int mask
= (1 << fls(max
)) - 1;
2841 unsigned int invert
= mc
->invert
;
2843 int connect
, change
;
2844 struct snd_soc_dapm_update update
;
2846 if (snd_soc_volsw_is_stereo(mc
))
2847 dev_warn(codec
->dapm
.dev
,
2848 "ASoC: Control '%s' is stereo, which is not supported\n",
2851 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2857 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2859 dapm_kcontrol_set_value(kcontrol
, val
);
2861 mask
= mask
<< shift
;
2864 change
= snd_soc_test_bits(codec
, reg
, mask
, val
);
2866 update
.kcontrol
= kcontrol
;
2871 card
->update
= &update
;
2873 soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
2875 card
->update
= NULL
;
2878 mutex_unlock(&card
->dapm_mutex
);
2881 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
2884 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2885 * @kcontrol: mixer control
2886 * @ucontrol: control element information
2888 * Callback to get the value of a dapm enumerated double mixer control.
2890 * Returns 0 for success.
2892 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2893 struct snd_ctl_elem_value
*ucontrol
)
2895 struct snd_soc_codec
*codec
= snd_soc_dapm_kcontrol_codec(kcontrol
);
2896 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2899 val
= snd_soc_read(codec
, e
->reg
);
2900 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & e
->mask
;
2901 if (e
->shift_l
!= e
->shift_r
)
2902 ucontrol
->value
.enumerated
.item
[1] =
2903 (val
>> e
->shift_r
) & e
->mask
;
2907 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2910 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2911 * @kcontrol: mixer control
2912 * @ucontrol: control element information
2914 * Callback to set the value of a dapm enumerated double mixer control.
2916 * Returns 0 for success.
2918 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2919 struct snd_ctl_elem_value
*ucontrol
)
2921 struct snd_soc_codec
*codec
= snd_soc_dapm_kcontrol_codec(kcontrol
);
2922 struct snd_soc_card
*card
= codec
->card
;
2923 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2924 unsigned int val
, mux
, change
;
2926 struct snd_soc_dapm_update update
;
2928 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2930 mux
= ucontrol
->value
.enumerated
.item
[0];
2931 val
= mux
<< e
->shift_l
;
2932 mask
= e
->mask
<< e
->shift_l
;
2933 if (e
->shift_l
!= e
->shift_r
) {
2934 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2936 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2937 mask
|= e
->mask
<< e
->shift_r
;
2940 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2942 change
= snd_soc_test_bits(codec
, e
->reg
, mask
, val
);
2944 update
.kcontrol
= kcontrol
;
2945 update
.reg
= e
->reg
;
2948 card
->update
= &update
;
2950 soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
2952 card
->update
= NULL
;
2955 mutex_unlock(&card
->dapm_mutex
);
2958 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2961 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2962 * @kcontrol: mixer control
2963 * @ucontrol: control element information
2965 * Returns 0 for success.
2967 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
2968 struct snd_ctl_elem_value
*ucontrol
)
2970 ucontrol
->value
.enumerated
.item
[0] = dapm_kcontrol_get_value(kcontrol
);
2973 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
2976 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2977 * @kcontrol: mixer control
2978 * @ucontrol: control element information
2980 * Returns 0 for success.
2982 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
2983 struct snd_ctl_elem_value
*ucontrol
)
2985 struct snd_soc_codec
*codec
= snd_soc_dapm_kcontrol_codec(kcontrol
);
2986 struct snd_soc_card
*card
= codec
->card
;
2988 struct soc_enum
*e
=
2989 (struct soc_enum
*)kcontrol
->private_value
;
2992 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
2995 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2997 value
= ucontrol
->value
.enumerated
.item
[0];
2998 change
= dapm_kcontrol_set_value(kcontrol
, value
);
3000 soc_dapm_mux_update_power(card
, kcontrol
, value
, e
);
3002 mutex_unlock(&card
->dapm_mutex
);
3005 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
3008 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
3010 * @kcontrol: mixer control
3011 * @ucontrol: control element information
3013 * Callback to get the value of a dapm semi enumerated double mixer control.
3015 * Semi enumerated mixer: the enumerated items are referred as values. Can be
3016 * used for handling bitfield coded enumeration for example.
3018 * Returns 0 for success.
3020 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
3021 struct snd_ctl_elem_value
*ucontrol
)
3023 struct snd_soc_codec
*codec
= snd_soc_dapm_kcontrol_codec(kcontrol
);
3024 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3025 unsigned int reg_val
, val
, mux
;
3027 reg_val
= snd_soc_read(codec
, e
->reg
);
3028 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
3029 for (mux
= 0; mux
< e
->max
; mux
++) {
3030 if (val
== e
->values
[mux
])
3033 ucontrol
->value
.enumerated
.item
[0] = mux
;
3034 if (e
->shift_l
!= e
->shift_r
) {
3035 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
3036 for (mux
= 0; mux
< e
->max
; mux
++) {
3037 if (val
== e
->values
[mux
])
3040 ucontrol
->value
.enumerated
.item
[1] = mux
;
3045 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
3048 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
3050 * @kcontrol: mixer control
3051 * @ucontrol: control element information
3053 * Callback to set the value of a dapm semi enumerated double mixer control.
3055 * Semi enumerated mixer: the enumerated items are referred as values. Can be
3056 * used for handling bitfield coded enumeration for example.
3058 * Returns 0 for success.
3060 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
3061 struct snd_ctl_elem_value
*ucontrol
)
3063 struct snd_soc_codec
*codec
= snd_soc_dapm_kcontrol_codec(kcontrol
);
3064 struct snd_soc_card
*card
= codec
->card
;
3065 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3066 unsigned int val
, mux
, change
;
3068 struct snd_soc_dapm_update update
;
3070 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
3072 mux
= ucontrol
->value
.enumerated
.item
[0];
3073 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
3074 mask
= e
->mask
<< e
->shift_l
;
3075 if (e
->shift_l
!= e
->shift_r
) {
3076 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
3078 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
3079 mask
|= e
->mask
<< e
->shift_r
;
3082 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3084 change
= snd_soc_test_bits(codec
, e
->reg
, mask
, val
);
3086 update
.kcontrol
= kcontrol
;
3087 update
.reg
= e
->reg
;
3090 card
->update
= &update
;
3092 soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
3094 card
->update
= NULL
;
3097 mutex_unlock(&card
->dapm_mutex
);
3100 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
3103 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3105 * @kcontrol: mixer control
3106 * @uinfo: control element information
3108 * Callback to provide information about a pin switch control.
3110 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
3111 struct snd_ctl_elem_info
*uinfo
)
3113 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
3115 uinfo
->value
.integer
.min
= 0;
3116 uinfo
->value
.integer
.max
= 1;
3120 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
3123 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3125 * @kcontrol: mixer control
3128 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
3129 struct snd_ctl_elem_value
*ucontrol
)
3131 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3132 const char *pin
= (const char *)kcontrol
->private_value
;
3134 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3136 ucontrol
->value
.integer
.value
[0] =
3137 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
3139 mutex_unlock(&card
->dapm_mutex
);
3143 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
3146 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3148 * @kcontrol: mixer control
3151 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3152 struct snd_ctl_elem_value
*ucontrol
)
3154 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3155 const char *pin
= (const char *)kcontrol
->private_value
;
3157 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3159 if (ucontrol
->value
.integer
.value
[0])
3160 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3162 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3164 mutex_unlock(&card
->dapm_mutex
);
3166 snd_soc_dapm_sync(&card
->dapm
);
3169 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3171 static struct snd_soc_dapm_widget
*
3172 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3173 const struct snd_soc_dapm_widget
*widget
)
3175 struct snd_soc_dapm_widget
*w
;
3178 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3182 case snd_soc_dapm_regulator_supply
:
3183 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3184 if (IS_ERR(w
->regulator
)) {
3185 ret
= PTR_ERR(w
->regulator
);
3186 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3191 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3192 ret
= regulator_allow_bypass(w
->regulator
, true);
3194 dev_warn(w
->dapm
->dev
,
3195 "ASoC: Failed to unbypass %s: %d\n",
3199 case snd_soc_dapm_clock_supply
:
3200 #ifdef CONFIG_CLKDEV_LOOKUP
3201 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3202 if (IS_ERR(w
->clk
)) {
3203 ret
= PTR_ERR(w
->clk
);
3204 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3216 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
3217 w
->name
= kasprintf(GFP_KERNEL
, "%s %s",
3218 dapm
->codec
->name_prefix
, widget
->name
);
3220 w
->name
= kasprintf(GFP_KERNEL
, "%s", widget
->name
);
3222 if (w
->name
== NULL
) {
3228 case snd_soc_dapm_switch
:
3229 case snd_soc_dapm_mixer
:
3230 case snd_soc_dapm_mixer_named_ctl
:
3231 w
->power_check
= dapm_generic_check_power
;
3233 case snd_soc_dapm_mux
:
3234 case snd_soc_dapm_virt_mux
:
3235 case snd_soc_dapm_value_mux
:
3236 w
->power_check
= dapm_generic_check_power
;
3238 case snd_soc_dapm_dai_out
:
3239 w
->power_check
= dapm_adc_check_power
;
3241 case snd_soc_dapm_dai_in
:
3242 w
->power_check
= dapm_dac_check_power
;
3244 case snd_soc_dapm_adc
:
3245 case snd_soc_dapm_aif_out
:
3246 case snd_soc_dapm_dac
:
3247 case snd_soc_dapm_aif_in
:
3248 case snd_soc_dapm_pga
:
3249 case snd_soc_dapm_out_drv
:
3250 case snd_soc_dapm_input
:
3251 case snd_soc_dapm_output
:
3252 case snd_soc_dapm_micbias
:
3253 case snd_soc_dapm_spk
:
3254 case snd_soc_dapm_hp
:
3255 case snd_soc_dapm_mic
:
3256 case snd_soc_dapm_line
:
3257 case snd_soc_dapm_dai_link
:
3258 w
->power_check
= dapm_generic_check_power
;
3260 case snd_soc_dapm_supply
:
3261 case snd_soc_dapm_regulator_supply
:
3262 case snd_soc_dapm_clock_supply
:
3263 case snd_soc_dapm_kcontrol
:
3264 w
->power_check
= dapm_supply_check_power
;
3267 w
->power_check
= dapm_always_on_check_power
;
3272 w
->codec
= dapm
->codec
;
3273 w
->platform
= dapm
->platform
;
3274 INIT_LIST_HEAD(&w
->sources
);
3275 INIT_LIST_HEAD(&w
->sinks
);
3276 INIT_LIST_HEAD(&w
->list
);
3277 INIT_LIST_HEAD(&w
->dirty
);
3278 list_add(&w
->list
, &dapm
->card
->widgets
);
3280 /* machine layer set ups unconnected pins and insertions */
3286 * snd_soc_dapm_new_controls - create new dapm controls
3287 * @dapm: DAPM context
3288 * @widget: widget array
3289 * @num: number of widgets
3291 * Creates new DAPM controls based upon the templates.
3293 * Returns 0 for success else error.
3295 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3296 const struct snd_soc_dapm_widget
*widget
,
3299 struct snd_soc_dapm_widget
*w
;
3303 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3304 for (i
= 0; i
< num
; i
++) {
3305 w
= snd_soc_dapm_new_control(dapm
, widget
);
3308 "ASoC: Failed to create DAPM control %s\n",
3315 mutex_unlock(&dapm
->card
->dapm_mutex
);
3318 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3320 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3321 struct snd_kcontrol
*kcontrol
, int event
)
3323 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3324 struct snd_soc_dai
*source
, *sink
;
3325 const struct snd_soc_pcm_stream
*config
= w
->params
;
3326 struct snd_pcm_substream substream
;
3327 struct snd_pcm_hw_params
*params
= NULL
;
3332 BUG_ON(list_empty(&w
->sources
) || list_empty(&w
->sinks
));
3334 /* We only support a single source and sink, pick the first */
3335 source_p
= list_first_entry(&w
->sources
, struct snd_soc_dapm_path
,
3337 sink_p
= list_first_entry(&w
->sinks
, struct snd_soc_dapm_path
,
3340 BUG_ON(!source_p
|| !sink_p
);
3341 BUG_ON(!sink_p
->source
|| !source_p
->sink
);
3342 BUG_ON(!source_p
->source
|| !sink_p
->sink
);
3344 source
= source_p
->source
->priv
;
3345 sink
= sink_p
->sink
->priv
;
3347 /* Be a little careful as we don't want to overflow the mask array */
3348 if (config
->formats
) {
3349 fmt
= ffs(config
->formats
) - 1;
3351 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3356 /* Currently very limited parameter selection */
3357 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3362 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3364 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3366 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3369 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3370 = config
->channels_min
;
3371 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3372 = config
->channels_max
;
3374 memset(&substream
, 0, sizeof(substream
));
3377 case SND_SOC_DAPM_PRE_PMU
:
3378 if (source
->driver
->ops
&& source
->driver
->ops
->hw_params
) {
3379 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3380 ret
= source
->driver
->ops
->hw_params(&substream
,
3383 dev_err(source
->dev
,
3384 "ASoC: hw_params() failed: %d\n", ret
);
3389 if (sink
->driver
->ops
&& sink
->driver
->ops
->hw_params
) {
3390 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3391 ret
= sink
->driver
->ops
->hw_params(&substream
, params
,
3395 "ASoC: hw_params() failed: %d\n", ret
);
3401 case SND_SOC_DAPM_POST_PMU
:
3402 ret
= snd_soc_dai_digital_mute(sink
, 0,
3403 SNDRV_PCM_STREAM_PLAYBACK
);
3404 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3405 dev_warn(sink
->dev
, "ASoC: Failed to unmute: %d\n", ret
);
3409 case SND_SOC_DAPM_PRE_PMD
:
3410 ret
= snd_soc_dai_digital_mute(sink
, 1,
3411 SNDRV_PCM_STREAM_PLAYBACK
);
3412 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3413 dev_warn(sink
->dev
, "ASoC: Failed to mute: %d\n", ret
);
3427 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3428 const struct snd_soc_pcm_stream
*params
,
3429 struct snd_soc_dapm_widget
*source
,
3430 struct snd_soc_dapm_widget
*sink
)
3432 struct snd_soc_dapm_route routes
[2];
3433 struct snd_soc_dapm_widget
template;
3434 struct snd_soc_dapm_widget
*w
;
3438 len
= strlen(source
->name
) + strlen(sink
->name
) + 2;
3439 link_name
= devm_kzalloc(card
->dev
, len
, GFP_KERNEL
);
3442 snprintf(link_name
, len
, "%s-%s", source
->name
, sink
->name
);
3444 memset(&template, 0, sizeof(template));
3445 template.reg
= SND_SOC_NOPM
;
3446 template.id
= snd_soc_dapm_dai_link
;
3447 template.name
= link_name
;
3448 template.event
= snd_soc_dai_link_event
;
3449 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3450 SND_SOC_DAPM_PRE_PMD
;
3452 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
3454 w
= snd_soc_dapm_new_control(&card
->dapm
, &template);
3456 dev_err(card
->dev
, "ASoC: Failed to create %s widget\n",
3463 memset(&routes
, 0, sizeof(routes
));
3465 routes
[0].source
= source
->name
;
3466 routes
[0].sink
= link_name
;
3467 routes
[1].source
= link_name
;
3468 routes
[1].sink
= sink
->name
;
3470 return snd_soc_dapm_add_routes(&card
->dapm
, routes
,
3471 ARRAY_SIZE(routes
));
3474 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3475 struct snd_soc_dai
*dai
)
3477 struct snd_soc_dapm_widget
template;
3478 struct snd_soc_dapm_widget
*w
;
3480 WARN_ON(dapm
->dev
!= dai
->dev
);
3482 memset(&template, 0, sizeof(template));
3483 template.reg
= SND_SOC_NOPM
;
3485 if (dai
->driver
->playback
.stream_name
) {
3486 template.id
= snd_soc_dapm_dai_in
;
3487 template.name
= dai
->driver
->playback
.stream_name
;
3488 template.sname
= dai
->driver
->playback
.stream_name
;
3490 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3493 w
= snd_soc_dapm_new_control(dapm
, &template);
3495 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3496 dai
->driver
->playback
.stream_name
);
3501 dai
->playback_widget
= w
;
3504 if (dai
->driver
->capture
.stream_name
) {
3505 template.id
= snd_soc_dapm_dai_out
;
3506 template.name
= dai
->driver
->capture
.stream_name
;
3507 template.sname
= dai
->driver
->capture
.stream_name
;
3509 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3512 w
= snd_soc_dapm_new_control(dapm
, &template);
3514 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3515 dai
->driver
->capture
.stream_name
);
3520 dai
->capture_widget
= w
;
3526 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3528 struct snd_soc_dapm_widget
*dai_w
, *w
;
3529 struct snd_soc_dai
*dai
;
3531 /* For each DAI widget... */
3532 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3533 switch (dai_w
->id
) {
3534 case snd_soc_dapm_dai_in
:
3535 case snd_soc_dapm_dai_out
:
3543 /* ...find all widgets with the same stream and link them */
3544 list_for_each_entry(w
, &card
->widgets
, list
) {
3545 if (w
->dapm
!= dai_w
->dapm
)
3549 case snd_soc_dapm_dai_in
:
3550 case snd_soc_dapm_dai_out
:
3556 if (!w
->sname
|| !strstr(w
->sname
, dai_w
->name
))
3559 if (dai
->driver
->playback
.stream_name
&&
3561 dai
->driver
->playback
.stream_name
)) {
3562 dev_dbg(dai
->dev
, "%s -> %s\n",
3563 dai
->playback_widget
->name
, w
->name
);
3565 snd_soc_dapm_add_path(w
->dapm
,
3566 dai
->playback_widget
, w
, NULL
, NULL
);
3569 if (dai
->driver
->capture
.stream_name
&&
3571 dai
->driver
->capture
.stream_name
)) {
3572 dev_dbg(dai
->dev
, "%s -> %s\n",
3573 w
->name
, dai
->capture_widget
->name
);
3575 snd_soc_dapm_add_path(w
->dapm
, w
,
3576 dai
->capture_widget
, NULL
, NULL
);
3584 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3588 struct snd_soc_dapm_widget
*w_cpu
, *w_codec
;
3589 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3590 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
3592 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
3593 w_cpu
= cpu_dai
->playback_widget
;
3594 w_codec
= codec_dai
->playback_widget
;
3596 w_cpu
= cpu_dai
->capture_widget
;
3597 w_codec
= codec_dai
->capture_widget
;
3602 dapm_mark_dirty(w_cpu
, "stream event");
3605 case SND_SOC_DAPM_STREAM_START
:
3608 case SND_SOC_DAPM_STREAM_STOP
:
3611 case SND_SOC_DAPM_STREAM_SUSPEND
:
3612 case SND_SOC_DAPM_STREAM_RESUME
:
3613 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3614 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3621 dapm_mark_dirty(w_codec
, "stream event");
3624 case SND_SOC_DAPM_STREAM_START
:
3625 w_codec
->active
= 1;
3627 case SND_SOC_DAPM_STREAM_STOP
:
3628 w_codec
->active
= 0;
3630 case SND_SOC_DAPM_STREAM_SUSPEND
:
3631 case SND_SOC_DAPM_STREAM_RESUME
:
3632 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3633 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3638 dapm_power_widgets(rtd
->card
, event
);
3642 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3643 * @rtd: PCM runtime data
3644 * @stream: stream name
3645 * @event: stream event
3647 * Sends a stream event to the dapm core. The core then makes any
3648 * necessary widget power changes.
3650 * Returns 0 for success else error.
3652 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3655 struct snd_soc_card
*card
= rtd
->card
;
3657 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3658 soc_dapm_stream_event(rtd
, stream
, event
);
3659 mutex_unlock(&card
->dapm_mutex
);
3663 * snd_soc_dapm_enable_pin - enable pin.
3664 * @dapm: DAPM context
3667 * Enables input/output pin and its parents or children widgets iff there is
3668 * a valid audio route and active audio stream.
3669 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3670 * do any widget power switching.
3672 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3674 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
3676 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
3679 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3680 * @dapm: DAPM context
3683 * Enables input/output pin regardless of any other state. This is
3684 * intended for use with microphone bias supplies used in microphone
3687 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3688 * do any widget power switching.
3690 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
3693 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3696 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3700 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
3703 dapm_mark_dirty(w
, "force enable");
3707 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
3710 * snd_soc_dapm_disable_pin - disable pin.
3711 * @dapm: DAPM context
3714 * Disables input/output pin and its parents or children widgets.
3715 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3716 * do any widget power switching.
3718 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
3721 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3723 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
3726 * snd_soc_dapm_nc_pin - permanently disable pin.
3727 * @dapm: DAPM context
3730 * Marks the specified pin as being not connected, disabling it along
3731 * any parent or child widgets. At present this is identical to
3732 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3733 * additional things such as disabling controls which only affect
3734 * paths through the pin.
3736 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3737 * do any widget power switching.
3739 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3741 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3743 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
3746 * snd_soc_dapm_get_pin_status - get audio pin status
3747 * @dapm: DAPM context
3748 * @pin: audio signal pin endpoint (or start point)
3750 * Get audio pin status - connected or disconnected.
3752 * Returns 1 for connected otherwise 0.
3754 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
3757 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3760 return w
->connected
;
3764 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
3767 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3768 * @dapm: DAPM context
3769 * @pin: audio signal pin endpoint (or start point)
3771 * Mark the given endpoint or pin as ignoring suspend. When the
3772 * system is disabled a path between two endpoints flagged as ignoring
3773 * suspend will not be disabled. The path must already be enabled via
3774 * normal means at suspend time, it will not be turned on if it was not
3777 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
3780 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
3783 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3787 w
->ignore_suspend
= 1;
3791 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
3793 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card
*card
,
3794 struct snd_soc_dapm_widget
*w
)
3796 struct snd_soc_dapm_path
*p
;
3798 list_for_each_entry(p
, &card
->paths
, list
) {
3799 if ((p
->source
== w
) || (p
->sink
== w
)) {
3801 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3802 p
->source
->name
, p
->source
->id
, p
->source
->dapm
,
3803 p
->sink
->name
, p
->sink
->id
, p
->sink
->dapm
);
3805 /* Connected to something other than the codec */
3806 if (p
->source
->dapm
!= p
->sink
->dapm
)
3809 * Loopback connection from codec external pin to
3810 * codec external pin
3812 if (p
->sink
->id
== snd_soc_dapm_input
) {
3813 switch (p
->source
->id
) {
3814 case snd_soc_dapm_output
:
3815 case snd_soc_dapm_micbias
:
3828 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3829 * @codec: The codec whose pins should be processed
3831 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3832 * which are unused. Pins are used if they are connected externally to the
3833 * codec, whether that be to some other device, or a loop-back connection to
3836 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec
*codec
)
3838 struct snd_soc_card
*card
= codec
->card
;
3839 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
3840 struct snd_soc_dapm_widget
*w
;
3842 dev_dbg(codec
->dev
, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3843 &card
->dapm
, &codec
->dapm
);
3845 list_for_each_entry(w
, &card
->widgets
, list
) {
3846 if (w
->dapm
!= dapm
)
3849 case snd_soc_dapm_input
:
3850 case snd_soc_dapm_output
:
3851 case snd_soc_dapm_micbias
:
3852 dev_dbg(codec
->dev
, "ASoC: Auto NC: Checking widget %s\n",
3854 if (!snd_soc_dapm_widget_in_card_paths(card
, w
)) {
3856 "... Not in map; disabling\n");
3857 snd_soc_dapm_nc_pin(dapm
, w
->name
);
3867 * snd_soc_dapm_free - free dapm resources
3868 * @dapm: DAPM context
3870 * Free all dapm widgets and resources.
3872 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
3874 snd_soc_dapm_sys_remove(dapm
->dev
);
3875 dapm_debugfs_cleanup(dapm
);
3876 dapm_free_widgets(dapm
);
3877 list_del(&dapm
->list
);
3879 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
3881 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context
*dapm
)
3883 struct snd_soc_card
*card
= dapm
->card
;
3884 struct snd_soc_dapm_widget
*w
;
3885 LIST_HEAD(down_list
);
3888 mutex_lock(&card
->dapm_mutex
);
3890 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
3891 if (w
->dapm
!= dapm
)
3894 dapm_seq_insert(w
, &down_list
, false);
3900 /* If there were no widgets to power down we're already in
3904 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
3905 snd_soc_dapm_set_bias_level(dapm
,
3906 SND_SOC_BIAS_PREPARE
);
3907 dapm_seq_run(card
, &down_list
, 0, false);
3908 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
3909 snd_soc_dapm_set_bias_level(dapm
,
3910 SND_SOC_BIAS_STANDBY
);
3913 mutex_unlock(&card
->dapm_mutex
);
3917 * snd_soc_dapm_shutdown - callback for system shutdown
3919 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
3921 struct snd_soc_codec
*codec
;
3923 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
3924 soc_dapm_shutdown_codec(&codec
->dapm
);
3925 if (codec
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
3926 snd_soc_dapm_set_bias_level(&codec
->dapm
,
3931 /* Module information */
3932 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3933 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3934 MODULE_LICENSE("GPL");