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/slab.h>
39 #include <sound/core.h>
40 #include <sound/pcm.h>
41 #include <sound/pcm_params.h>
42 #include <sound/soc.h>
43 #include <sound/initval.h>
45 #include <trace/events/asoc.h>
47 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
49 /* dapm power sequences - make this per codec in the future */
50 static int dapm_up_seq
[] = {
51 [snd_soc_dapm_pre
] = 0,
52 [snd_soc_dapm_supply
] = 1,
53 [snd_soc_dapm_regulator_supply
] = 1,
54 [snd_soc_dapm_micbias
] = 2,
55 [snd_soc_dapm_dai_link
] = 2,
56 [snd_soc_dapm_dai
] = 3,
57 [snd_soc_dapm_aif_in
] = 3,
58 [snd_soc_dapm_aif_out
] = 3,
59 [snd_soc_dapm_mic
] = 4,
60 [snd_soc_dapm_mux
] = 5,
61 [snd_soc_dapm_virt_mux
] = 5,
62 [snd_soc_dapm_value_mux
] = 5,
63 [snd_soc_dapm_dac
] = 6,
64 [snd_soc_dapm_mixer
] = 7,
65 [snd_soc_dapm_mixer_named_ctl
] = 7,
66 [snd_soc_dapm_pga
] = 8,
67 [snd_soc_dapm_adc
] = 9,
68 [snd_soc_dapm_out_drv
] = 10,
69 [snd_soc_dapm_hp
] = 10,
70 [snd_soc_dapm_spk
] = 10,
71 [snd_soc_dapm_line
] = 10,
72 [snd_soc_dapm_post
] = 11,
75 static int dapm_down_seq
[] = {
76 [snd_soc_dapm_pre
] = 0,
77 [snd_soc_dapm_adc
] = 1,
78 [snd_soc_dapm_hp
] = 2,
79 [snd_soc_dapm_spk
] = 2,
80 [snd_soc_dapm_line
] = 2,
81 [snd_soc_dapm_out_drv
] = 2,
82 [snd_soc_dapm_pga
] = 4,
83 [snd_soc_dapm_mixer_named_ctl
] = 5,
84 [snd_soc_dapm_mixer
] = 5,
85 [snd_soc_dapm_dac
] = 6,
86 [snd_soc_dapm_mic
] = 7,
87 [snd_soc_dapm_micbias
] = 8,
88 [snd_soc_dapm_mux
] = 9,
89 [snd_soc_dapm_virt_mux
] = 9,
90 [snd_soc_dapm_value_mux
] = 9,
91 [snd_soc_dapm_aif_in
] = 10,
92 [snd_soc_dapm_aif_out
] = 10,
93 [snd_soc_dapm_dai
] = 10,
94 [snd_soc_dapm_dai_link
] = 11,
95 [snd_soc_dapm_regulator_supply
] = 12,
96 [snd_soc_dapm_supply
] = 12,
97 [snd_soc_dapm_post
] = 13,
100 static void pop_wait(u32 pop_time
)
103 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
106 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
114 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
119 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
120 dev_info(dev
, "%s", buf
);
126 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
128 return !list_empty(&w
->dirty
);
131 void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
133 if (!dapm_dirty_widget(w
)) {
134 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
136 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
139 EXPORT_SYMBOL_GPL(dapm_mark_dirty
);
141 /* create a new dapm widget */
142 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
143 const struct snd_soc_dapm_widget
*_widget
)
145 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
148 /* get snd_card from DAPM context */
149 static inline struct snd_card
*dapm_get_snd_card(
150 struct snd_soc_dapm_context
*dapm
)
153 return dapm
->codec
->card
->snd_card
;
154 else if (dapm
->platform
)
155 return dapm
->platform
->card
->snd_card
;
163 /* get soc_card from DAPM context */
164 static inline struct snd_soc_card
*dapm_get_soc_card(
165 struct snd_soc_dapm_context
*dapm
)
168 return dapm
->codec
->card
;
169 else if (dapm
->platform
)
170 return dapm
->platform
->card
;
178 static void dapm_reset(struct snd_soc_card
*card
)
180 struct snd_soc_dapm_widget
*w
;
182 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
184 list_for_each_entry(w
, &card
->widgets
, list
) {
185 w
->power_checked
= false;
191 static int soc_widget_read(struct snd_soc_dapm_widget
*w
, int reg
)
194 return snd_soc_read(w
->codec
, reg
);
195 else if (w
->platform
)
196 return snd_soc_platform_read(w
->platform
, reg
);
198 dev_err(w
->dapm
->dev
, "no valid widget read method\n");
202 static int soc_widget_write(struct snd_soc_dapm_widget
*w
, int reg
, int val
)
205 return snd_soc_write(w
->codec
, reg
, val
);
206 else if (w
->platform
)
207 return snd_soc_platform_write(w
->platform
, reg
, val
);
209 dev_err(w
->dapm
->dev
, "no valid widget write method\n");
213 static inline void soc_widget_lock(struct snd_soc_dapm_widget
*w
)
215 if (w
->codec
&& !w
->codec
->using_regmap
)
216 mutex_lock(&w
->codec
->mutex
);
217 else if (w
->platform
)
218 mutex_lock(&w
->platform
->mutex
);
221 static inline void soc_widget_unlock(struct snd_soc_dapm_widget
*w
)
223 if (w
->codec
&& !w
->codec
->using_regmap
)
224 mutex_unlock(&w
->codec
->mutex
);
225 else if (w
->platform
)
226 mutex_unlock(&w
->platform
->mutex
);
229 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget
*w
,
230 unsigned short reg
, unsigned int mask
, unsigned int value
)
233 unsigned int old
, new;
236 if (w
->codec
&& w
->codec
->using_regmap
) {
237 ret
= regmap_update_bits_check(w
->codec
->control_data
,
238 reg
, mask
, value
, &change
);
243 ret
= soc_widget_read(w
, reg
);
245 soc_widget_unlock(w
);
250 new = (old
& ~mask
) | (value
& mask
);
253 ret
= soc_widget_write(w
, reg
, new);
255 soc_widget_unlock(w
);
259 soc_widget_unlock(w
);
266 * snd_soc_dapm_set_bias_level - set the bias level for the system
267 * @dapm: DAPM context
268 * @level: level to configure
270 * Configure the bias (power) levels for the SoC audio device.
272 * Returns 0 for success else error.
274 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
275 enum snd_soc_bias_level level
)
277 struct snd_soc_card
*card
= dapm
->card
;
280 trace_snd_soc_bias_level_start(card
, level
);
282 if (card
&& card
->set_bias_level
)
283 ret
= card
->set_bias_level(card
, dapm
, level
);
288 if (dapm
->codec
->driver
->set_bias_level
)
289 ret
= dapm
->codec
->driver
->set_bias_level(dapm
->codec
,
292 dapm
->bias_level
= level
;
297 if (card
&& card
->set_bias_level_post
)
298 ret
= card
->set_bias_level_post(card
, dapm
, level
);
300 trace_snd_soc_bias_level_done(card
, level
);
305 /* set up initial codec paths */
306 static void dapm_set_path_status(struct snd_soc_dapm_widget
*w
,
307 struct snd_soc_dapm_path
*p
, int i
)
310 case snd_soc_dapm_switch
:
311 case snd_soc_dapm_mixer
:
312 case snd_soc_dapm_mixer_named_ctl
: {
314 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
315 w
->kcontrol_news
[i
].private_value
;
316 unsigned int reg
= mc
->reg
;
317 unsigned int shift
= mc
->shift
;
319 unsigned int mask
= (1 << fls(max
)) - 1;
320 unsigned int invert
= mc
->invert
;
322 val
= soc_widget_read(w
, reg
);
323 val
= (val
>> shift
) & mask
;
325 if ((invert
&& !val
) || (!invert
&& val
))
331 case snd_soc_dapm_mux
: {
332 struct soc_enum
*e
= (struct soc_enum
*)
333 w
->kcontrol_news
[i
].private_value
;
334 int val
, item
, bitmask
;
336 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
338 val
= soc_widget_read(w
, e
->reg
);
339 item
= (val
>> e
->shift_l
) & (bitmask
- 1);
342 for (i
= 0; i
< e
->max
; i
++) {
343 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
348 case snd_soc_dapm_virt_mux
: {
349 struct soc_enum
*e
= (struct soc_enum
*)
350 w
->kcontrol_news
[i
].private_value
;
353 /* since a virtual mux has no backing registers to
354 * decide which path to connect, it will try to match
355 * with the first enumeration. This is to ensure
356 * that the default mux choice (the first) will be
357 * correctly powered up during initialization.
359 if (!strcmp(p
->name
, e
->texts
[0]))
363 case snd_soc_dapm_value_mux
: {
364 struct soc_enum
*e
= (struct soc_enum
*)
365 w
->kcontrol_news
[i
].private_value
;
368 val
= soc_widget_read(w
, e
->reg
);
369 val
= (val
>> e
->shift_l
) & e
->mask
;
370 for (item
= 0; item
< e
->max
; item
++) {
371 if (val
== e
->values
[item
])
376 for (i
= 0; i
< e
->max
; i
++) {
377 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
382 /* does not affect routing - always connected */
383 case snd_soc_dapm_pga
:
384 case snd_soc_dapm_out_drv
:
385 case snd_soc_dapm_output
:
386 case snd_soc_dapm_adc
:
387 case snd_soc_dapm_input
:
388 case snd_soc_dapm_siggen
:
389 case snd_soc_dapm_dac
:
390 case snd_soc_dapm_micbias
:
391 case snd_soc_dapm_vmid
:
392 case snd_soc_dapm_supply
:
393 case snd_soc_dapm_regulator_supply
:
394 case snd_soc_dapm_aif_in
:
395 case snd_soc_dapm_aif_out
:
396 case snd_soc_dapm_dai
:
397 case snd_soc_dapm_hp
:
398 case snd_soc_dapm_mic
:
399 case snd_soc_dapm_spk
:
400 case snd_soc_dapm_line
:
401 case snd_soc_dapm_dai_link
:
404 /* does affect routing - dynamically connected */
405 case snd_soc_dapm_pre
:
406 case snd_soc_dapm_post
:
412 /* connect mux widget to its interconnecting audio paths */
413 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
414 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
415 struct snd_soc_dapm_path
*path
, const char *control_name
,
416 const struct snd_kcontrol_new
*kcontrol
)
418 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
421 for (i
= 0; i
< e
->max
; i
++) {
422 if (!(strcmp(control_name
, e
->texts
[i
]))) {
423 list_add(&path
->list
, &dapm
->card
->paths
);
424 list_add(&path
->list_sink
, &dest
->sources
);
425 list_add(&path
->list_source
, &src
->sinks
);
426 path
->name
= (char*)e
->texts
[i
];
427 dapm_set_path_status(dest
, path
, 0);
435 /* connect mixer widget to its interconnecting audio paths */
436 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
437 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
438 struct snd_soc_dapm_path
*path
, const char *control_name
)
442 /* search for mixer kcontrol */
443 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
444 if (!strcmp(control_name
, dest
->kcontrol_news
[i
].name
)) {
445 list_add(&path
->list
, &dapm
->card
->paths
);
446 list_add(&path
->list_sink
, &dest
->sources
);
447 list_add(&path
->list_source
, &src
->sinks
);
448 path
->name
= dest
->kcontrol_news
[i
].name
;
449 dapm_set_path_status(dest
, path
, i
);
456 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
457 struct snd_soc_dapm_widget
*kcontrolw
,
458 const struct snd_kcontrol_new
*kcontrol_new
,
459 struct snd_kcontrol
**kcontrol
)
461 struct snd_soc_dapm_widget
*w
;
466 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
467 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
469 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
470 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
472 *kcontrol
= w
->kcontrols
[i
];
481 /* create new dapm mixer control */
482 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
484 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
486 size_t name_len
, prefix_len
;
487 struct snd_soc_dapm_path
*path
;
488 struct snd_card
*card
= dapm
->card
->snd_card
;
490 struct snd_soc_dapm_widget_list
*wlist
;
494 prefix
= dapm
->codec
->name_prefix
;
499 prefix_len
= strlen(prefix
) + 1;
504 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
507 list_for_each_entry(path
, &w
->sources
, list_sink
) {
509 /* mixer/mux paths name must match control name */
510 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
513 if (w
->kcontrols
[i
]) {
514 path
->kcontrol
= w
->kcontrols
[i
];
518 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
519 sizeof(struct snd_soc_dapm_widget
*),
520 wlist
= kzalloc(wlistsize
, GFP_KERNEL
);
523 "asoc: can't allocate widget list for %s\n",
527 wlist
->num_widgets
= 1;
528 wlist
->widgets
[0] = w
;
530 /* add dapm control with long name.
531 * for dapm_mixer this is the concatenation of the
532 * mixer and kcontrol name.
533 * for dapm_mixer_named_ctl this is simply the
536 name_len
= strlen(w
->kcontrol_news
[i
].name
) + 1;
537 if (w
->id
!= snd_soc_dapm_mixer_named_ctl
)
538 name_len
+= 1 + strlen(w
->name
);
540 path
->long_name
= kmalloc(name_len
, GFP_KERNEL
);
542 if (path
->long_name
== NULL
) {
549 /* The control will get a prefix from
550 * the control creation process but
551 * we're also using the same prefix
552 * for widgets so cut the prefix off
553 * the front of the widget name.
555 snprintf((char *)path
->long_name
, name_len
,
556 "%s %s", w
->name
+ prefix_len
,
557 w
->kcontrol_news
[i
].name
);
559 case snd_soc_dapm_mixer_named_ctl
:
560 snprintf((char *)path
->long_name
, name_len
,
561 "%s", w
->kcontrol_news
[i
].name
);
565 ((char *)path
->long_name
)[name_len
- 1] = '\0';
567 path
->kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
],
568 wlist
, path
->long_name
,
570 ret
= snd_ctl_add(card
, path
->kcontrol
);
573 "asoc: failed to add dapm kcontrol %s: %d\n",
574 path
->long_name
, ret
);
576 kfree(path
->long_name
);
577 path
->long_name
= NULL
;
580 w
->kcontrols
[i
] = path
->kcontrol
;
586 /* create new dapm mux control */
587 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
589 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
590 struct snd_soc_dapm_path
*path
= NULL
;
591 struct snd_kcontrol
*kcontrol
;
592 struct snd_card
*card
= dapm
->card
->snd_card
;
596 struct snd_soc_dapm_widget_list
*wlist
;
597 int shared
, wlistentries
;
601 if (w
->num_kcontrols
!= 1) {
603 "asoc: mux %s has incorrect number of controls\n",
608 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[0],
611 wlist
= kcontrol
->private_data
;
612 wlistentries
= wlist
->num_widgets
+ 1;
617 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
618 wlistentries
* sizeof(struct snd_soc_dapm_widget
*),
619 wlist
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
622 "asoc: can't allocate widget list for %s\n", w
->name
);
625 wlist
->num_widgets
= wlistentries
;
626 wlist
->widgets
[wlistentries
- 1] = w
;
630 prefix
= dapm
->codec
->name_prefix
;
635 name
= w
->kcontrol_news
[0].name
;
640 prefix_len
= strlen(prefix
) + 1;
646 * The control will get a prefix from the control creation
647 * process but we're also using the same prefix for widgets so
648 * cut the prefix off the front of the widget name.
650 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[0], wlist
,
651 name
+ prefix_len
, prefix
);
652 ret
= snd_ctl_add(card
, kcontrol
);
654 dev_err(dapm
->dev
, "failed to add kcontrol %s: %d\n",
661 kcontrol
->private_data
= wlist
;
663 w
->kcontrols
[0] = kcontrol
;
665 list_for_each_entry(path
, &w
->sources
, list_sink
)
666 path
->kcontrol
= kcontrol
;
671 /* create new dapm volume control */
672 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
674 if (w
->num_kcontrols
)
675 dev_err(w
->dapm
->dev
,
676 "asoc: PGA controls not supported: '%s'\n", w
->name
);
681 /* reset 'walked' bit for each dapm path */
682 static inline void dapm_clear_walk(struct snd_soc_dapm_context
*dapm
)
684 struct snd_soc_dapm_path
*p
;
686 list_for_each_entry(p
, &dapm
->card
->paths
, list
)
690 /* We implement power down on suspend by checking the power state of
691 * the ALSA card - when we are suspending the ALSA state for the card
694 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
696 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
699 case SNDRV_CTL_POWER_D3hot
:
700 case SNDRV_CTL_POWER_D3cold
:
701 if (widget
->ignore_suspend
)
702 dev_dbg(widget
->dapm
->dev
, "%s ignoring suspend\n",
704 return widget
->ignore_suspend
;
710 /* add widget to list if it's not already in the list */
711 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list
**list
,
712 struct snd_soc_dapm_widget
*w
)
714 struct snd_soc_dapm_widget_list
*wlist
;
715 int wlistsize
, wlistentries
, i
;
722 /* is this widget already in the list */
723 for (i
= 0; i
< wlist
->num_widgets
; i
++) {
724 if (wlist
->widgets
[i
] == w
)
728 /* allocate some new space */
729 wlistentries
= wlist
->num_widgets
+ 1;
730 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
731 wlistentries
* sizeof(struct snd_soc_dapm_widget
*);
732 *list
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
734 dev_err(w
->dapm
->dev
, "can't allocate widget list for %s\n",
740 /* insert the widget */
741 dev_dbg(w
->dapm
->dev
, "added %s in widget list pos %d\n",
742 w
->name
, wlist
->num_widgets
);
744 wlist
->widgets
[wlist
->num_widgets
] = w
;
745 wlist
->num_widgets
++;
750 * Recursively check for a completed path to an active or physically connected
751 * output widget. Returns number of complete paths.
753 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
754 struct snd_soc_dapm_widget_list
**list
)
756 struct snd_soc_dapm_path
*path
;
759 if (widget
->outputs
>= 0)
760 return widget
->outputs
;
762 DAPM_UPDATE_STAT(widget
, path_checks
);
764 switch (widget
->id
) {
765 case snd_soc_dapm_supply
:
766 case snd_soc_dapm_regulator_supply
:
772 switch (widget
->id
) {
773 case snd_soc_dapm_adc
:
774 case snd_soc_dapm_aif_out
:
775 case snd_soc_dapm_dai
:
776 if (widget
->active
) {
777 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
778 return widget
->outputs
;
784 if (widget
->connected
) {
785 /* connected pin ? */
786 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
) {
787 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
788 return widget
->outputs
;
791 /* connected jack or spk ? */
792 if (widget
->id
== snd_soc_dapm_hp
||
793 widget
->id
== snd_soc_dapm_spk
||
794 (widget
->id
== snd_soc_dapm_line
&&
795 !list_empty(&widget
->sources
))) {
796 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
797 return widget
->outputs
;
801 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
802 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
810 trace_snd_soc_dapm_output_path(widget
, path
);
812 if (path
->sink
&& path
->connect
) {
815 /* do we need to add this widget to the list ? */
818 err
= dapm_list_add_widget(list
, path
->sink
);
820 dev_err(widget
->dapm
->dev
, "could not add widget %s\n",
826 con
+= is_connected_output_ep(path
->sink
, list
);
830 widget
->outputs
= con
;
836 * Recursively check for a completed path to an active or physically connected
837 * input widget. Returns number of complete paths.
839 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
840 struct snd_soc_dapm_widget_list
**list
)
842 struct snd_soc_dapm_path
*path
;
845 if (widget
->inputs
>= 0)
846 return widget
->inputs
;
848 DAPM_UPDATE_STAT(widget
, path_checks
);
850 switch (widget
->id
) {
851 case snd_soc_dapm_supply
:
852 case snd_soc_dapm_regulator_supply
:
858 /* active stream ? */
859 switch (widget
->id
) {
860 case snd_soc_dapm_dac
:
861 case snd_soc_dapm_aif_in
:
862 case snd_soc_dapm_dai
:
863 if (widget
->active
) {
864 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
865 return widget
->inputs
;
871 if (widget
->connected
) {
872 /* connected pin ? */
873 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
) {
874 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
875 return widget
->inputs
;
878 /* connected VMID/Bias for lower pops */
879 if (widget
->id
== snd_soc_dapm_vmid
) {
880 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
881 return widget
->inputs
;
884 /* connected jack ? */
885 if (widget
->id
== snd_soc_dapm_mic
||
886 (widget
->id
== snd_soc_dapm_line
&&
887 !list_empty(&widget
->sinks
))) {
888 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
889 return widget
->inputs
;
892 /* signal generator */
893 if (widget
->id
== snd_soc_dapm_siggen
) {
894 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
895 return widget
->inputs
;
899 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
900 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
908 trace_snd_soc_dapm_input_path(widget
, path
);
910 if (path
->source
&& path
->connect
) {
913 /* do we need to add this widget to the list ? */
916 err
= dapm_list_add_widget(list
, path
->sink
);
918 dev_err(widget
->dapm
->dev
, "could not add widget %s\n",
924 con
+= is_connected_input_ep(path
->source
, list
);
928 widget
->inputs
= con
;
934 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
936 * @stream: stream direction.
937 * @list: list of active widgets for this stream.
939 * Queries DAPM graph as to whether an valid audio stream path exists for
940 * the initial stream specified by name. This takes into account
941 * current mixer and mux kcontrol settings. Creates list of valid widgets.
943 * Returns the number of valid paths or negative error.
945 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
946 struct snd_soc_dapm_widget_list
**list
)
948 struct snd_soc_card
*card
= dai
->card
;
951 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
954 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
955 paths
= is_connected_output_ep(dai
->playback_widget
, list
);
957 paths
= is_connected_input_ep(dai
->playback_widget
, list
);
959 trace_snd_soc_dapm_connected(paths
, stream
);
960 dapm_clear_walk(&card
->dapm
);
961 mutex_unlock(&card
->dapm_mutex
);
967 * Handler for generic register modifier widget.
969 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
970 struct snd_kcontrol
*kcontrol
, int event
)
974 if (SND_SOC_DAPM_EVENT_ON(event
))
979 soc_widget_update_bits_locked(w
, -(w
->reg
+ 1),
980 w
->mask
<< w
->shift
, val
<< w
->shift
);
984 EXPORT_SYMBOL_GPL(dapm_reg_event
);
987 * Handler for regulator supply widget.
989 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
990 struct snd_kcontrol
*kcontrol
, int event
)
992 if (SND_SOC_DAPM_EVENT_ON(event
))
993 return regulator_enable(w
->regulator
);
995 return regulator_disable_deferred(w
->regulator
, w
->shift
);
997 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
999 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1001 if (w
->power_checked
)
1002 return w
->new_power
;
1007 w
->new_power
= w
->power_check(w
);
1009 w
->power_checked
= true;
1011 return w
->new_power
;
1014 /* Generic check to see if a widget should be powered.
1016 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1020 DAPM_UPDATE_STAT(w
, power_checks
);
1022 in
= is_connected_input_ep(w
, NULL
);
1023 dapm_clear_walk(w
->dapm
);
1024 out
= is_connected_output_ep(w
, NULL
);
1025 dapm_clear_walk(w
->dapm
);
1026 return out
!= 0 && in
!= 0;
1029 static int dapm_dai_check_power(struct snd_soc_dapm_widget
*w
)
1031 DAPM_UPDATE_STAT(w
, power_checks
);
1036 return dapm_generic_check_power(w
);
1039 /* Check to see if an ADC has power */
1040 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
1044 DAPM_UPDATE_STAT(w
, power_checks
);
1047 in
= is_connected_input_ep(w
, NULL
);
1048 dapm_clear_walk(w
->dapm
);
1051 return dapm_generic_check_power(w
);
1055 /* Check to see if a DAC has power */
1056 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
1060 DAPM_UPDATE_STAT(w
, power_checks
);
1063 out
= is_connected_output_ep(w
, NULL
);
1064 dapm_clear_walk(w
->dapm
);
1067 return dapm_generic_check_power(w
);
1071 /* Check to see if a power supply is needed */
1072 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1074 struct snd_soc_dapm_path
*path
;
1076 DAPM_UPDATE_STAT(w
, power_checks
);
1078 /* Check if one of our outputs is connected */
1079 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1080 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1085 if (path
->connected
&&
1086 !path
->connected(path
->source
, path
->sink
))
1092 if (dapm_widget_power_check(path
->sink
))
1096 dapm_clear_walk(w
->dapm
);
1101 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1106 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1107 struct snd_soc_dapm_widget
*b
,
1115 sort
= dapm_down_seq
;
1117 if (sort
[a
->id
] != sort
[b
->id
])
1118 return sort
[a
->id
] - sort
[b
->id
];
1119 if (a
->subseq
!= b
->subseq
) {
1121 return a
->subseq
- b
->subseq
;
1123 return b
->subseq
- a
->subseq
;
1125 if (a
->reg
!= b
->reg
)
1126 return a
->reg
- b
->reg
;
1127 if (a
->dapm
!= b
->dapm
)
1128 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1133 /* Insert a widget in order into a DAPM power sequence. */
1134 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1135 struct list_head
*list
,
1138 struct snd_soc_dapm_widget
*w
;
1140 list_for_each_entry(w
, list
, power_list
)
1141 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1142 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1146 list_add_tail(&new_widget
->power_list
, list
);
1149 static void dapm_seq_check_event(struct snd_soc_dapm_context
*dapm
,
1150 struct snd_soc_dapm_widget
*w
, int event
)
1152 struct snd_soc_card
*card
= dapm
->card
;
1153 const char *ev_name
;
1157 case SND_SOC_DAPM_PRE_PMU
:
1158 ev_name
= "PRE_PMU";
1161 case SND_SOC_DAPM_POST_PMU
:
1162 ev_name
= "POST_PMU";
1165 case SND_SOC_DAPM_PRE_PMD
:
1166 ev_name
= "PRE_PMD";
1169 case SND_SOC_DAPM_POST_PMD
:
1170 ev_name
= "POST_PMD";
1178 if (w
->power
!= power
)
1181 if (w
->event
&& (w
->event_flags
& event
)) {
1182 pop_dbg(dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1184 trace_snd_soc_dapm_widget_event_start(w
, event
);
1185 ret
= w
->event(w
, NULL
, event
);
1186 trace_snd_soc_dapm_widget_event_done(w
, event
);
1188 pr_err("%s: %s event failed: %d\n",
1189 ev_name
, w
->name
, ret
);
1193 /* Apply the coalesced changes from a DAPM sequence */
1194 static void dapm_seq_run_coalesced(struct snd_soc_dapm_context
*dapm
,
1195 struct list_head
*pending
)
1197 struct snd_soc_card
*card
= dapm
->card
;
1198 struct snd_soc_dapm_widget
*w
;
1200 unsigned int value
= 0;
1201 unsigned int mask
= 0;
1202 unsigned int cur_mask
;
1204 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1207 list_for_each_entry(w
, pending
, power_list
) {
1208 cur_mask
= 1 << w
->shift
;
1209 BUG_ON(reg
!= w
->reg
);
1220 pop_dbg(dapm
->dev
, card
->pop_time
,
1221 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1222 w
->name
, reg
, value
, mask
);
1224 /* Check for events */
1225 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMU
);
1226 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMD
);
1230 /* Any widget will do, they should all be updating the
1233 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1236 pop_dbg(dapm
->dev
, card
->pop_time
,
1237 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1238 value
, mask
, reg
, card
->pop_time
);
1239 pop_wait(card
->pop_time
);
1240 soc_widget_update_bits_locked(w
, reg
, mask
, value
);
1243 list_for_each_entry(w
, pending
, power_list
) {
1244 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMU
);
1245 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMD
);
1249 /* Apply a DAPM power sequence.
1251 * We walk over a pre-sorted list of widgets to apply power to. In
1252 * order to minimise the number of writes to the device required
1253 * multiple widgets will be updated in a single write where possible.
1254 * Currently anything that requires more than a single write is not
1257 static void dapm_seq_run(struct snd_soc_dapm_context
*dapm
,
1258 struct list_head
*list
, int event
, bool power_up
)
1260 struct snd_soc_dapm_widget
*w
, *n
;
1263 int cur_subseq
= -1;
1264 int cur_reg
= SND_SOC_NOPM
;
1265 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1272 sort
= dapm_down_seq
;
1274 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1277 /* Do we need to apply any queued changes? */
1278 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1279 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1280 if (!list_empty(&pending
))
1281 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1283 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1284 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1285 if (sort
[i
] == cur_sort
)
1286 cur_dapm
->seq_notifier(cur_dapm
,
1291 INIT_LIST_HEAD(&pending
);
1293 cur_subseq
= INT_MIN
;
1294 cur_reg
= SND_SOC_NOPM
;
1299 case snd_soc_dapm_pre
:
1301 list_for_each_entry_safe_continue(w
, n
, list
,
1304 if (event
== SND_SOC_DAPM_STREAM_START
)
1306 NULL
, SND_SOC_DAPM_PRE_PMU
);
1307 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1309 NULL
, SND_SOC_DAPM_PRE_PMD
);
1312 case snd_soc_dapm_post
:
1314 list_for_each_entry_safe_continue(w
, n
, list
,
1317 if (event
== SND_SOC_DAPM_STREAM_START
)
1319 NULL
, SND_SOC_DAPM_POST_PMU
);
1320 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1322 NULL
, SND_SOC_DAPM_POST_PMD
);
1326 /* Queue it up for application */
1327 cur_sort
= sort
[w
->id
];
1328 cur_subseq
= w
->subseq
;
1331 list_move(&w
->power_list
, &pending
);
1336 dev_err(w
->dapm
->dev
,
1337 "Failed to apply widget power: %d\n", ret
);
1340 if (!list_empty(&pending
))
1341 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1343 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1344 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1345 if (sort
[i
] == cur_sort
)
1346 cur_dapm
->seq_notifier(cur_dapm
,
1351 static void dapm_widget_update(struct snd_soc_dapm_context
*dapm
)
1353 struct snd_soc_dapm_update
*update
= dapm
->update
;
1354 struct snd_soc_dapm_widget
*w
;
1363 (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1364 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1366 pr_err("%s DAPM pre-event failed: %d\n",
1370 ret
= soc_widget_update_bits_locked(w
, update
->reg
, update
->mask
,
1373 pr_err("%s DAPM update failed: %d\n", w
->name
, ret
);
1376 (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1377 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1379 pr_err("%s DAPM post-event failed: %d\n",
1384 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1385 * they're changing state.
1387 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1389 struct snd_soc_dapm_context
*d
= data
;
1392 /* If we're off and we're not supposed to be go into STANDBY */
1393 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1394 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1396 pm_runtime_get_sync(d
->dev
);
1398 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1401 "Failed to turn on bias: %d\n", ret
);
1404 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1405 if (d
->bias_level
!= d
->target_bias_level
) {
1406 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1409 "Failed to prepare bias: %d\n", ret
);
1413 /* Async callback run prior to DAPM sequences - brings to their final
1416 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1418 struct snd_soc_dapm_context
*d
= data
;
1421 /* If we just powered the last thing off drop to standby bias */
1422 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1423 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1424 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1425 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1427 dev_err(d
->dev
, "Failed to apply standby bias: %d\n",
1431 /* If we're in standby and can support bias off then do that */
1432 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1433 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1434 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1436 dev_err(d
->dev
, "Failed to turn off bias: %d\n", ret
);
1439 pm_runtime_put(d
->dev
);
1442 /* If we just powered up then move to active bias */
1443 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1444 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1445 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1447 dev_err(d
->dev
, "Failed to apply active bias: %d\n",
1452 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1453 bool power
, bool connect
)
1455 /* If a connection is being made or broken then that update
1456 * will have marked the peer dirty, otherwise the widgets are
1457 * not connected and this update has no impact. */
1461 /* If the peer is already in the state we're moving to then we
1462 * won't have an impact on it. */
1463 if (power
!= peer
->power
)
1464 dapm_mark_dirty(peer
, "peer state change");
1467 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1468 struct list_head
*up_list
,
1469 struct list_head
*down_list
)
1471 struct snd_soc_dapm_path
*path
;
1473 if (w
->power
== power
)
1476 trace_snd_soc_dapm_widget_power(w
, power
);
1478 /* If we changed our power state perhaps our neigbours changed
1481 list_for_each_entry(path
, &w
->sources
, list_sink
) {
1483 dapm_widget_set_peer_power(path
->source
, power
,
1488 case snd_soc_dapm_supply
:
1489 case snd_soc_dapm_regulator_supply
:
1490 /* Supplies can't affect their outputs, only their inputs */
1493 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1495 dapm_widget_set_peer_power(path
->sink
, power
,
1503 dapm_seq_insert(w
, up_list
, true);
1505 dapm_seq_insert(w
, down_list
, false);
1510 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1511 struct list_head
*up_list
,
1512 struct list_head
*down_list
)
1517 case snd_soc_dapm_pre
:
1518 dapm_seq_insert(w
, down_list
, false);
1520 case snd_soc_dapm_post
:
1521 dapm_seq_insert(w
, up_list
, true);
1525 power
= dapm_widget_power_check(w
);
1527 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1533 * Scan each dapm widget for complete audio path.
1534 * A complete path is a route that has valid endpoints i.e.:-
1536 * o DAC to output pin.
1537 * o Input Pin to ADC.
1538 * o Input pin to Output pin (bypass, sidetone)
1539 * o DAC to ADC (loopback).
1541 static int dapm_power_widgets(struct snd_soc_dapm_context
*dapm
, int event
)
1543 struct snd_soc_card
*card
= dapm
->card
;
1544 struct snd_soc_dapm_widget
*w
;
1545 struct snd_soc_dapm_context
*d
;
1547 LIST_HEAD(down_list
);
1548 LIST_HEAD(async_domain
);
1549 enum snd_soc_bias_level bias
;
1551 trace_snd_soc_dapm_start(card
);
1553 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1554 if (d
->idle_bias_off
)
1555 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1557 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1562 /* Check which widgets we need to power and store them in
1563 * lists indicating if they should be powered up or down. We
1564 * only check widgets that have been flagged as dirty but note
1565 * that new widgets may be added to the dirty list while we
1568 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1569 dapm_power_one_widget(w
, &up_list
, &down_list
);
1572 list_for_each_entry(w
, &card
->widgets
, list
) {
1573 list_del_init(&w
->dirty
);
1578 /* Supplies and micbiases only bring the
1579 * context up to STANDBY as unless something
1580 * else is active and passing audio they
1581 * generally don't require full power. Signal
1582 * generators are virtual pins and have no
1583 * power impact themselves.
1586 case snd_soc_dapm_siggen
:
1588 case snd_soc_dapm_supply
:
1589 case snd_soc_dapm_regulator_supply
:
1590 case snd_soc_dapm_micbias
:
1591 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1592 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1595 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1602 /* Force all contexts in the card to the same bias state if
1603 * they're not ground referenced.
1605 bias
= SND_SOC_BIAS_OFF
;
1606 list_for_each_entry(d
, &card
->dapm_list
, list
)
1607 if (d
->target_bias_level
> bias
)
1608 bias
= d
->target_bias_level
;
1609 list_for_each_entry(d
, &card
->dapm_list
, list
)
1610 if (!d
->idle_bias_off
)
1611 d
->target_bias_level
= bias
;
1613 trace_snd_soc_dapm_walk_done(card
);
1615 /* Run all the bias changes in parallel */
1616 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1617 async_schedule_domain(dapm_pre_sequence_async
, d
,
1619 async_synchronize_full_domain(&async_domain
);
1621 /* Power down widgets first; try to avoid amplifying pops. */
1622 dapm_seq_run(dapm
, &down_list
, event
, false);
1624 dapm_widget_update(dapm
);
1627 dapm_seq_run(dapm
, &up_list
, event
, true);
1629 /* Run all the bias changes in parallel */
1630 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1631 async_schedule_domain(dapm_post_sequence_async
, d
,
1633 async_synchronize_full_domain(&async_domain
);
1635 /* do we need to notify any clients that DAPM event is complete */
1636 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1637 if (d
->stream_event
)
1638 d
->stream_event(d
, event
);
1641 pop_dbg(dapm
->dev
, card
->pop_time
,
1642 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1643 pop_wait(card
->pop_time
);
1645 trace_snd_soc_dapm_done(card
);
1650 #ifdef CONFIG_DEBUG_FS
1651 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1652 char __user
*user_buf
,
1653 size_t count
, loff_t
*ppos
)
1655 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1659 struct snd_soc_dapm_path
*p
= NULL
;
1661 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1665 in
= is_connected_input_ep(w
, NULL
);
1666 dapm_clear_walk(w
->dapm
);
1667 out
= is_connected_output_ep(w
, NULL
);
1668 dapm_clear_walk(w
->dapm
);
1670 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1671 w
->name
, w
->power
? "On" : "Off",
1672 w
->force
? " (forced)" : "", in
, out
);
1675 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1676 " - R%d(0x%x) bit %d",
1677 w
->reg
, w
->reg
, w
->shift
);
1679 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1682 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1684 w
->active
? "active" : "inactive");
1686 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1687 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1691 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1692 " in \"%s\" \"%s\"\n",
1693 p
->name
? p
->name
: "static",
1696 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1697 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1701 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1702 " out \"%s\" \"%s\"\n",
1703 p
->name
? p
->name
: "static",
1707 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1713 static const struct file_operations dapm_widget_power_fops
= {
1714 .open
= simple_open
,
1715 .read
= dapm_widget_power_read_file
,
1716 .llseek
= default_llseek
,
1719 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1720 size_t count
, loff_t
*ppos
)
1722 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1725 switch (dapm
->bias_level
) {
1726 case SND_SOC_BIAS_ON
:
1729 case SND_SOC_BIAS_PREPARE
:
1730 level
= "Prepare\n";
1732 case SND_SOC_BIAS_STANDBY
:
1733 level
= "Standby\n";
1735 case SND_SOC_BIAS_OFF
:
1740 level
= "Unknown\n";
1744 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1748 static const struct file_operations dapm_bias_fops
= {
1749 .open
= simple_open
,
1750 .read
= dapm_bias_read_file
,
1751 .llseek
= default_llseek
,
1754 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1755 struct dentry
*parent
)
1759 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
1761 if (!dapm
->debugfs_dapm
) {
1763 "Failed to create DAPM debugfs directory\n");
1767 d
= debugfs_create_file("bias_level", 0444,
1768 dapm
->debugfs_dapm
, dapm
,
1772 "ASoC: Failed to create bias level debugfs file\n");
1775 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1777 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1780 if (!dapm
->debugfs_dapm
|| !w
->name
)
1783 d
= debugfs_create_file(w
->name
, 0444,
1784 dapm
->debugfs_dapm
, w
,
1785 &dapm_widget_power_fops
);
1787 dev_warn(w
->dapm
->dev
,
1788 "ASoC: Failed to create %s debugfs file\n",
1792 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1794 debugfs_remove_recursive(dapm
->debugfs_dapm
);
1798 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1799 struct dentry
*parent
)
1803 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1807 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1813 /* test and update the power status of a mux widget */
1814 static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1815 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
1817 struct snd_soc_dapm_path
*path
;
1820 if (widget
->id
!= snd_soc_dapm_mux
&&
1821 widget
->id
!= snd_soc_dapm_virt_mux
&&
1822 widget
->id
!= snd_soc_dapm_value_mux
)
1825 /* find dapm widget path assoc with kcontrol */
1826 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1827 if (path
->kcontrol
!= kcontrol
)
1830 if (!path
->name
|| !e
->texts
[mux
])
1834 /* we now need to match the string in the enum to the path */
1835 if (!(strcmp(path
->name
, e
->texts
[mux
]))) {
1836 path
->connect
= 1; /* new connection */
1837 dapm_mark_dirty(path
->source
, "mux connection");
1840 dapm_mark_dirty(path
->source
,
1841 "mux disconnection");
1842 path
->connect
= 0; /* old connection must be powered down */
1847 dapm_mark_dirty(widget
, "mux change");
1848 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1854 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1855 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
1857 struct snd_soc_card
*card
= widget
->dapm
->card
;
1860 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1861 ret
= soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
1862 mutex_unlock(&card
->dapm_mutex
);
1864 soc_dpcm_runtime_update(widget
);
1867 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
1869 /* test and update the power status of a mixer or switch widget */
1870 static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1871 struct snd_kcontrol
*kcontrol
, int connect
)
1873 struct snd_soc_dapm_path
*path
;
1876 if (widget
->id
!= snd_soc_dapm_mixer
&&
1877 widget
->id
!= snd_soc_dapm_mixer_named_ctl
&&
1878 widget
->id
!= snd_soc_dapm_switch
)
1881 /* find dapm widget path assoc with kcontrol */
1882 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1883 if (path
->kcontrol
!= kcontrol
)
1886 /* found, now check type */
1888 path
->connect
= connect
;
1889 dapm_mark_dirty(path
->source
, "mixer connection");
1893 dapm_mark_dirty(widget
, "mixer update");
1894 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1900 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1901 struct snd_kcontrol
*kcontrol
, int connect
)
1903 struct snd_soc_card
*card
= widget
->dapm
->card
;
1906 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1907 ret
= soc_dapm_mixer_update_power(widget
, kcontrol
, connect
);
1908 mutex_unlock(&card
->dapm_mutex
);
1910 soc_dpcm_runtime_update(widget
);
1913 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
1915 /* show dapm widget status in sys fs */
1916 static ssize_t
dapm_widget_show(struct device
*dev
,
1917 struct device_attribute
*attr
, char *buf
)
1919 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
1920 struct snd_soc_codec
*codec
=rtd
->codec
;
1921 struct snd_soc_dapm_widget
*w
;
1923 char *state
= "not set";
1925 list_for_each_entry(w
, &codec
->card
->widgets
, list
) {
1926 if (w
->dapm
!= &codec
->dapm
)
1929 /* only display widgets that burnm power */
1931 case snd_soc_dapm_hp
:
1932 case snd_soc_dapm_mic
:
1933 case snd_soc_dapm_spk
:
1934 case snd_soc_dapm_line
:
1935 case snd_soc_dapm_micbias
:
1936 case snd_soc_dapm_dac
:
1937 case snd_soc_dapm_adc
:
1938 case snd_soc_dapm_pga
:
1939 case snd_soc_dapm_out_drv
:
1940 case snd_soc_dapm_mixer
:
1941 case snd_soc_dapm_mixer_named_ctl
:
1942 case snd_soc_dapm_supply
:
1943 case snd_soc_dapm_regulator_supply
:
1945 count
+= sprintf(buf
+ count
, "%s: %s\n",
1946 w
->name
, w
->power
? "On":"Off");
1953 switch (codec
->dapm
.bias_level
) {
1954 case SND_SOC_BIAS_ON
:
1957 case SND_SOC_BIAS_PREPARE
:
1960 case SND_SOC_BIAS_STANDBY
:
1963 case SND_SOC_BIAS_OFF
:
1967 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
1972 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
1974 int snd_soc_dapm_sys_add(struct device
*dev
)
1976 return device_create_file(dev
, &dev_attr_dapm_widget
);
1979 static void snd_soc_dapm_sys_remove(struct device
*dev
)
1981 device_remove_file(dev
, &dev_attr_dapm_widget
);
1984 /* free all dapm widgets and resources */
1985 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
1987 struct snd_soc_dapm_widget
*w
, *next_w
;
1988 struct snd_soc_dapm_path
*p
, *next_p
;
1990 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
1991 if (w
->dapm
!= dapm
)
1995 * remove source and sink paths associated to this widget.
1996 * While removing the path, remove reference to it from both
1997 * source and sink widgets so that path is removed only once.
1999 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
) {
2000 list_del(&p
->list_sink
);
2001 list_del(&p
->list_source
);
2003 kfree(p
->long_name
);
2006 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
) {
2007 list_del(&p
->list_sink
);
2008 list_del(&p
->list_source
);
2010 kfree(p
->long_name
);
2013 kfree(w
->kcontrols
);
2019 static struct snd_soc_dapm_widget
*dapm_find_widget(
2020 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2021 bool search_other_contexts
)
2023 struct snd_soc_dapm_widget
*w
;
2024 struct snd_soc_dapm_widget
*fallback
= NULL
;
2026 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2027 if (!strcmp(w
->name
, pin
)) {
2028 if (w
->dapm
== dapm
)
2035 if (search_other_contexts
)
2041 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2042 const char *pin
, int status
)
2044 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2047 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
2051 if (w
->connected
!= status
)
2052 dapm_mark_dirty(w
, "pin configuration");
2054 w
->connected
= status
;
2062 * snd_soc_dapm_sync - scan and power dapm paths
2063 * @dapm: DAPM context
2065 * Walks all dapm audio paths and powers widgets according to their
2066 * stream or path usage.
2068 * Returns 0 for success.
2070 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2075 * Suppress early reports (eg, jacks syncing their state) to avoid
2076 * silly DAPM runs during card startup.
2078 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2081 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2082 ret
= dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2083 mutex_unlock(&dapm
->card
->dapm_mutex
);
2086 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2088 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2089 const struct snd_soc_dapm_route
*route
)
2091 struct snd_soc_dapm_path
*path
;
2092 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2093 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2095 const char *control
= route
->control
;
2097 char prefixed_sink
[80];
2098 char prefixed_source
[80];
2101 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2102 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2103 dapm
->codec
->name_prefix
, route
->sink
);
2104 sink
= prefixed_sink
;
2105 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2106 dapm
->codec
->name_prefix
, route
->source
);
2107 source
= prefixed_source
;
2110 source
= route
->source
;
2114 * find src and dest widgets over all widgets but favor a widget from
2115 * current DAPM context
2117 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2118 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2120 if (w
->dapm
== dapm
)
2124 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2126 if (w
->dapm
== dapm
)
2130 /* use widget from another DAPM context if not found from this */
2136 if (wsource
== NULL
|| wsink
== NULL
)
2139 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2143 path
->source
= wsource
;
2145 path
->connected
= route
->connected
;
2146 INIT_LIST_HEAD(&path
->list
);
2147 INIT_LIST_HEAD(&path
->list_source
);
2148 INIT_LIST_HEAD(&path
->list_sink
);
2150 /* check for external widgets */
2151 if (wsink
->id
== snd_soc_dapm_input
) {
2152 if (wsource
->id
== snd_soc_dapm_micbias
||
2153 wsource
->id
== snd_soc_dapm_mic
||
2154 wsource
->id
== snd_soc_dapm_line
||
2155 wsource
->id
== snd_soc_dapm_output
)
2158 if (wsource
->id
== snd_soc_dapm_output
) {
2159 if (wsink
->id
== snd_soc_dapm_spk
||
2160 wsink
->id
== snd_soc_dapm_hp
||
2161 wsink
->id
== snd_soc_dapm_line
||
2162 wsink
->id
== snd_soc_dapm_input
)
2166 /* connect static paths */
2167 if (control
== NULL
) {
2168 list_add(&path
->list
, &dapm
->card
->paths
);
2169 list_add(&path
->list_sink
, &wsink
->sources
);
2170 list_add(&path
->list_source
, &wsource
->sinks
);
2175 /* connect dynamic paths */
2176 switch (wsink
->id
) {
2177 case snd_soc_dapm_adc
:
2178 case snd_soc_dapm_dac
:
2179 case snd_soc_dapm_pga
:
2180 case snd_soc_dapm_out_drv
:
2181 case snd_soc_dapm_input
:
2182 case snd_soc_dapm_output
:
2183 case snd_soc_dapm_siggen
:
2184 case snd_soc_dapm_micbias
:
2185 case snd_soc_dapm_vmid
:
2186 case snd_soc_dapm_pre
:
2187 case snd_soc_dapm_post
:
2188 case snd_soc_dapm_supply
:
2189 case snd_soc_dapm_regulator_supply
:
2190 case snd_soc_dapm_aif_in
:
2191 case snd_soc_dapm_aif_out
:
2192 case snd_soc_dapm_dai
:
2193 case snd_soc_dapm_dai_link
:
2194 list_add(&path
->list
, &dapm
->card
->paths
);
2195 list_add(&path
->list_sink
, &wsink
->sources
);
2196 list_add(&path
->list_source
, &wsource
->sinks
);
2199 case snd_soc_dapm_mux
:
2200 case snd_soc_dapm_virt_mux
:
2201 case snd_soc_dapm_value_mux
:
2202 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
2203 &wsink
->kcontrol_news
[0]);
2207 case snd_soc_dapm_switch
:
2208 case snd_soc_dapm_mixer
:
2209 case snd_soc_dapm_mixer_named_ctl
:
2210 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
2214 case snd_soc_dapm_hp
:
2215 case snd_soc_dapm_mic
:
2216 case snd_soc_dapm_line
:
2217 case snd_soc_dapm_spk
:
2218 list_add(&path
->list
, &dapm
->card
->paths
);
2219 list_add(&path
->list_sink
, &wsink
->sources
);
2220 list_add(&path
->list_source
, &wsource
->sinks
);
2227 dev_warn(dapm
->dev
, "asoc: no dapm match for %s --> %s --> %s\n",
2228 source
, control
, sink
);
2234 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2235 * @dapm: DAPM context
2236 * @route: audio routes
2237 * @num: number of routes
2239 * Connects 2 dapm widgets together via a named audio path. The sink is
2240 * the widget receiving the audio signal, whilst the source is the sender
2241 * of the audio signal.
2243 * Returns 0 for success else error. On error all resources can be freed
2244 * with a call to snd_soc_card_free().
2246 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2247 const struct snd_soc_dapm_route
*route
, int num
)
2251 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2252 for (i
= 0; i
< num
; i
++) {
2253 ret
= snd_soc_dapm_add_route(dapm
, route
);
2255 dev_err(dapm
->dev
, "Failed to add route %s->%s\n",
2256 route
->source
, route
->sink
);
2261 mutex_unlock(&dapm
->card
->dapm_mutex
);
2265 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2267 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2268 const struct snd_soc_dapm_route
*route
)
2270 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2273 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2276 struct snd_soc_dapm_path
*path
;
2280 dev_err(dapm
->dev
, "Unable to find source %s for weak route\n",
2286 dev_err(dapm
->dev
, "Unable to find sink %s for weak route\n",
2291 if (route
->control
|| route
->connected
)
2292 dev_warn(dapm
->dev
, "Ignoring control for weak route %s->%s\n",
2293 route
->source
, route
->sink
);
2295 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2296 if (path
->sink
== sink
) {
2303 dev_err(dapm
->dev
, "No path found for weak route %s->%s\n",
2304 route
->source
, route
->sink
);
2306 dev_warn(dapm
->dev
, "%d paths found for weak route %s->%s\n",
2307 count
, route
->source
, route
->sink
);
2313 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2314 * @dapm: DAPM context
2315 * @route: audio routes
2316 * @num: number of routes
2318 * Mark existing routes matching those specified in the passed array
2319 * as being weak, meaning that they are ignored for the purpose of
2320 * power decisions. The main intended use case is for sidetone paths
2321 * which couple audio between other independent paths if they are both
2322 * active in order to make the combination work better at the user
2323 * level but which aren't intended to be "used".
2325 * Note that CODEC drivers should not use this as sidetone type paths
2326 * can frequently also be used as bypass paths.
2328 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2329 const struct snd_soc_dapm_route
*route
, int num
)
2334 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2335 for (i
= 0; i
< num
; i
++) {
2336 err
= snd_soc_dapm_weak_route(dapm
, route
);
2341 mutex_unlock(&dapm
->card
->dapm_mutex
);
2345 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2348 * snd_soc_dapm_new_widgets - add new dapm widgets
2349 * @dapm: DAPM context
2351 * Checks the codec for any new dapm widgets and creates them if found.
2353 * Returns 0 for success.
2355 int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context
*dapm
)
2357 struct snd_soc_dapm_widget
*w
;
2360 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2362 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2367 if (w
->num_kcontrols
) {
2368 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2369 sizeof(struct snd_kcontrol
*),
2371 if (!w
->kcontrols
) {
2372 mutex_unlock(&dapm
->card
->dapm_mutex
);
2378 case snd_soc_dapm_switch
:
2379 case snd_soc_dapm_mixer
:
2380 case snd_soc_dapm_mixer_named_ctl
:
2383 case snd_soc_dapm_mux
:
2384 case snd_soc_dapm_virt_mux
:
2385 case snd_soc_dapm_value_mux
:
2388 case snd_soc_dapm_pga
:
2389 case snd_soc_dapm_out_drv
:
2396 /* Read the initial power state from the device */
2398 val
= soc_widget_read(w
, w
->reg
);
2399 val
&= 1 << w
->shift
;
2409 dapm_mark_dirty(w
, "new widget");
2410 dapm_debugfs_add_widget(w
);
2413 dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2414 mutex_unlock(&dapm
->card
->dapm_mutex
);
2417 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2420 * snd_soc_dapm_get_volsw - dapm mixer get callback
2421 * @kcontrol: mixer control
2422 * @ucontrol: control element information
2424 * Callback to get the value of a dapm mixer control.
2426 * Returns 0 for success.
2428 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2429 struct snd_ctl_elem_value
*ucontrol
)
2431 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2432 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2433 struct soc_mixer_control
*mc
=
2434 (struct soc_mixer_control
*)kcontrol
->private_value
;
2435 unsigned int reg
= mc
->reg
;
2436 unsigned int shift
= mc
->shift
;
2437 unsigned int rshift
= mc
->rshift
;
2439 unsigned int invert
= mc
->invert
;
2440 unsigned int mask
= (1 << fls(max
)) - 1;
2442 ucontrol
->value
.integer
.value
[0] =
2443 (snd_soc_read(widget
->codec
, reg
) >> shift
) & mask
;
2444 if (shift
!= rshift
)
2445 ucontrol
->value
.integer
.value
[1] =
2446 (snd_soc_read(widget
->codec
, reg
) >> rshift
) & mask
;
2448 ucontrol
->value
.integer
.value
[0] =
2449 max
- ucontrol
->value
.integer
.value
[0];
2450 if (shift
!= rshift
)
2451 ucontrol
->value
.integer
.value
[1] =
2452 max
- ucontrol
->value
.integer
.value
[1];
2457 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2460 * snd_soc_dapm_put_volsw - dapm mixer set callback
2461 * @kcontrol: mixer control
2462 * @ucontrol: control element information
2464 * Callback to set the value of a dapm mixer control.
2466 * Returns 0 for success.
2468 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
2469 struct snd_ctl_elem_value
*ucontrol
)
2471 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2472 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2473 struct snd_soc_codec
*codec
= widget
->codec
;
2474 struct snd_soc_card
*card
= codec
->card
;
2475 struct soc_mixer_control
*mc
=
2476 (struct soc_mixer_control
*)kcontrol
->private_value
;
2477 unsigned int reg
= mc
->reg
;
2478 unsigned int shift
= mc
->shift
;
2480 unsigned int mask
= (1 << fls(max
)) - 1;
2481 unsigned int invert
= mc
->invert
;
2483 int connect
, change
;
2484 struct snd_soc_dapm_update update
;
2487 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2491 mask
= mask
<< shift
;
2495 /* new connection */
2496 connect
= invert
? 0 : 1;
2498 /* old connection must be powered down */
2499 connect
= invert
? 1 : 0;
2501 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2503 change
= snd_soc_test_bits(widget
->codec
, reg
, mask
, val
);
2505 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2506 widget
= wlist
->widgets
[wi
];
2508 widget
->value
= val
;
2510 update
.kcontrol
= kcontrol
;
2511 update
.widget
= widget
;
2515 widget
->dapm
->update
= &update
;
2517 soc_dapm_mixer_update_power(widget
, kcontrol
, connect
);
2519 widget
->dapm
->update
= NULL
;
2523 mutex_unlock(&card
->dapm_mutex
);
2526 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
2529 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2530 * @kcontrol: mixer control
2531 * @ucontrol: control element information
2533 * Callback to get the value of a dapm enumerated double mixer control.
2535 * Returns 0 for success.
2537 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2538 struct snd_ctl_elem_value
*ucontrol
)
2540 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2541 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2542 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2543 unsigned int val
, bitmask
;
2545 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2547 val
= snd_soc_read(widget
->codec
, e
->reg
);
2548 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & (bitmask
- 1);
2549 if (e
->shift_l
!= e
->shift_r
)
2550 ucontrol
->value
.enumerated
.item
[1] =
2551 (val
>> e
->shift_r
) & (bitmask
- 1);
2555 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2558 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2559 * @kcontrol: mixer control
2560 * @ucontrol: control element information
2562 * Callback to set the value of a dapm enumerated double mixer control.
2564 * Returns 0 for success.
2566 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2567 struct snd_ctl_elem_value
*ucontrol
)
2569 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2570 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2571 struct snd_soc_codec
*codec
= widget
->codec
;
2572 struct snd_soc_card
*card
= codec
->card
;
2573 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2574 unsigned int val
, mux
, change
;
2575 unsigned int mask
, bitmask
;
2576 struct snd_soc_dapm_update update
;
2579 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2581 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2583 mux
= ucontrol
->value
.enumerated
.item
[0];
2584 val
= mux
<< e
->shift_l
;
2585 mask
= (bitmask
- 1) << e
->shift_l
;
2586 if (e
->shift_l
!= e
->shift_r
) {
2587 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2589 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2590 mask
|= (bitmask
- 1) << e
->shift_r
;
2593 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2595 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2597 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2598 widget
= wlist
->widgets
[wi
];
2600 widget
->value
= val
;
2602 update
.kcontrol
= kcontrol
;
2603 update
.widget
= widget
;
2604 update
.reg
= e
->reg
;
2607 widget
->dapm
->update
= &update
;
2609 soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
2611 widget
->dapm
->update
= NULL
;
2615 mutex_unlock(&card
->dapm_mutex
);
2618 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2621 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2622 * @kcontrol: mixer control
2623 * @ucontrol: control element information
2625 * Returns 0 for success.
2627 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
2628 struct snd_ctl_elem_value
*ucontrol
)
2630 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2631 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2633 ucontrol
->value
.enumerated
.item
[0] = widget
->value
;
2637 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
2640 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2641 * @kcontrol: mixer control
2642 * @ucontrol: control element information
2644 * Returns 0 for success.
2646 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
2647 struct snd_ctl_elem_value
*ucontrol
)
2649 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2650 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2651 struct snd_soc_codec
*codec
= widget
->codec
;
2652 struct snd_soc_card
*card
= codec
->card
;
2653 struct soc_enum
*e
=
2654 (struct soc_enum
*)kcontrol
->private_value
;
2659 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
2662 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2664 change
= widget
->value
!= ucontrol
->value
.enumerated
.item
[0];
2666 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2667 widget
= wlist
->widgets
[wi
];
2669 widget
->value
= ucontrol
->value
.enumerated
.item
[0];
2671 soc_dapm_mux_update_power(widget
, kcontrol
, widget
->value
, e
);
2675 mutex_unlock(&card
->dapm_mutex
);
2678 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
2681 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2683 * @kcontrol: mixer control
2684 * @ucontrol: control element information
2686 * Callback to get the value of a dapm semi enumerated double mixer control.
2688 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2689 * used for handling bitfield coded enumeration for example.
2691 * Returns 0 for success.
2693 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2694 struct snd_ctl_elem_value
*ucontrol
)
2696 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2697 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2698 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2699 unsigned int reg_val
, val
, mux
;
2701 reg_val
= snd_soc_read(widget
->codec
, e
->reg
);
2702 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2703 for (mux
= 0; mux
< e
->max
; mux
++) {
2704 if (val
== e
->values
[mux
])
2707 ucontrol
->value
.enumerated
.item
[0] = mux
;
2708 if (e
->shift_l
!= e
->shift_r
) {
2709 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2710 for (mux
= 0; mux
< e
->max
; mux
++) {
2711 if (val
== e
->values
[mux
])
2714 ucontrol
->value
.enumerated
.item
[1] = mux
;
2719 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
2722 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2724 * @kcontrol: mixer control
2725 * @ucontrol: control element information
2727 * Callback to set the value of a dapm semi enumerated double mixer control.
2729 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2730 * used for handling bitfield coded enumeration for example.
2732 * Returns 0 for success.
2734 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2735 struct snd_ctl_elem_value
*ucontrol
)
2737 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2738 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2739 struct snd_soc_codec
*codec
= widget
->codec
;
2740 struct snd_soc_card
*card
= codec
->card
;
2741 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2742 unsigned int val
, mux
, change
;
2744 struct snd_soc_dapm_update update
;
2747 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2749 mux
= ucontrol
->value
.enumerated
.item
[0];
2750 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2751 mask
= e
->mask
<< e
->shift_l
;
2752 if (e
->shift_l
!= e
->shift_r
) {
2753 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2755 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2756 mask
|= e
->mask
<< e
->shift_r
;
2759 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2761 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2763 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2764 widget
= wlist
->widgets
[wi
];
2766 widget
->value
= val
;
2768 update
.kcontrol
= kcontrol
;
2769 update
.widget
= widget
;
2770 update
.reg
= e
->reg
;
2773 widget
->dapm
->update
= &update
;
2775 soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
2777 widget
->dapm
->update
= NULL
;
2781 mutex_unlock(&card
->dapm_mutex
);
2784 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
2787 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2789 * @kcontrol: mixer control
2790 * @uinfo: control element information
2792 * Callback to provide information about a pin switch control.
2794 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
2795 struct snd_ctl_elem_info
*uinfo
)
2797 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2799 uinfo
->value
.integer
.min
= 0;
2800 uinfo
->value
.integer
.max
= 1;
2804 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
2807 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2809 * @kcontrol: mixer control
2812 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
2813 struct snd_ctl_elem_value
*ucontrol
)
2815 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
2816 const char *pin
= (const char *)kcontrol
->private_value
;
2818 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2820 ucontrol
->value
.integer
.value
[0] =
2821 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
2823 mutex_unlock(&card
->dapm_mutex
);
2827 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
2830 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
2832 * @kcontrol: mixer control
2835 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
2836 struct snd_ctl_elem_value
*ucontrol
)
2838 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
2839 const char *pin
= (const char *)kcontrol
->private_value
;
2841 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2843 if (ucontrol
->value
.integer
.value
[0])
2844 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
2846 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
2848 mutex_unlock(&card
->dapm_mutex
);
2850 snd_soc_dapm_sync(&card
->dapm
);
2853 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
2855 static struct snd_soc_dapm_widget
*
2856 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
2857 const struct snd_soc_dapm_widget
*widget
)
2859 struct snd_soc_dapm_widget
*w
;
2863 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
2867 case snd_soc_dapm_regulator_supply
:
2868 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
2869 if (IS_ERR(w
->regulator
)) {
2870 ret
= PTR_ERR(w
->regulator
);
2871 dev_err(dapm
->dev
, "Failed to request %s: %d\n",
2880 name_len
= strlen(widget
->name
) + 1;
2881 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
2882 name_len
+= 1 + strlen(dapm
->codec
->name_prefix
);
2883 w
->name
= kmalloc(name_len
, GFP_KERNEL
);
2884 if (w
->name
== NULL
) {
2888 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
2889 snprintf((char *)w
->name
, name_len
, "%s %s",
2890 dapm
->codec
->name_prefix
, widget
->name
);
2892 snprintf((char *)w
->name
, name_len
, "%s", widget
->name
);
2895 case snd_soc_dapm_switch
:
2896 case snd_soc_dapm_mixer
:
2897 case snd_soc_dapm_mixer_named_ctl
:
2898 w
->power_check
= dapm_generic_check_power
;
2900 case snd_soc_dapm_mux
:
2901 case snd_soc_dapm_virt_mux
:
2902 case snd_soc_dapm_value_mux
:
2903 w
->power_check
= dapm_generic_check_power
;
2905 case snd_soc_dapm_adc
:
2906 case snd_soc_dapm_aif_out
:
2907 w
->power_check
= dapm_adc_check_power
;
2909 case snd_soc_dapm_dac
:
2910 case snd_soc_dapm_aif_in
:
2911 w
->power_check
= dapm_dac_check_power
;
2913 case snd_soc_dapm_pga
:
2914 case snd_soc_dapm_out_drv
:
2915 case snd_soc_dapm_input
:
2916 case snd_soc_dapm_output
:
2917 case snd_soc_dapm_micbias
:
2918 case snd_soc_dapm_spk
:
2919 case snd_soc_dapm_hp
:
2920 case snd_soc_dapm_mic
:
2921 case snd_soc_dapm_line
:
2922 case snd_soc_dapm_dai_link
:
2923 w
->power_check
= dapm_generic_check_power
;
2925 case snd_soc_dapm_supply
:
2926 case snd_soc_dapm_regulator_supply
:
2927 w
->power_check
= dapm_supply_check_power
;
2929 case snd_soc_dapm_dai
:
2930 w
->power_check
= dapm_dai_check_power
;
2933 w
->power_check
= dapm_always_on_check_power
;
2939 w
->codec
= dapm
->codec
;
2940 w
->platform
= dapm
->platform
;
2941 INIT_LIST_HEAD(&w
->sources
);
2942 INIT_LIST_HEAD(&w
->sinks
);
2943 INIT_LIST_HEAD(&w
->list
);
2944 INIT_LIST_HEAD(&w
->dirty
);
2945 list_add(&w
->list
, &dapm
->card
->widgets
);
2947 /* machine layer set ups unconnected pins and insertions */
2953 * snd_soc_dapm_new_controls - create new dapm controls
2954 * @dapm: DAPM context
2955 * @widget: widget array
2956 * @num: number of widgets
2958 * Creates new DAPM controls based upon the templates.
2960 * Returns 0 for success else error.
2962 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
2963 const struct snd_soc_dapm_widget
*widget
,
2966 struct snd_soc_dapm_widget
*w
;
2970 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2971 for (i
= 0; i
< num
; i
++) {
2972 w
= snd_soc_dapm_new_control(dapm
, widget
);
2975 "ASoC: Failed to create DAPM control %s\n",
2982 mutex_unlock(&dapm
->card
->dapm_mutex
);
2985 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
2987 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
2988 struct snd_kcontrol
*kcontrol
, int event
)
2990 struct snd_soc_dapm_path
*source_p
, *sink_p
;
2991 struct snd_soc_dai
*source
, *sink
;
2992 const struct snd_soc_pcm_stream
*config
= w
->params
;
2993 struct snd_pcm_substream substream
;
2994 struct snd_pcm_hw_params
*params
= NULL
;
2999 BUG_ON(list_empty(&w
->sources
) || list_empty(&w
->sinks
));
3001 /* We only support a single source and sink, pick the first */
3002 source_p
= list_first_entry(&w
->sources
, struct snd_soc_dapm_path
,
3004 sink_p
= list_first_entry(&w
->sinks
, struct snd_soc_dapm_path
,
3007 BUG_ON(!source_p
|| !sink_p
);
3008 BUG_ON(!sink_p
->source
|| !source_p
->sink
);
3009 BUG_ON(!source_p
->source
|| !sink_p
->sink
);
3011 source
= source_p
->source
->priv
;
3012 sink
= sink_p
->sink
->priv
;
3014 /* Be a little careful as we don't want to overflow the mask array */
3015 if (config
->formats
) {
3016 fmt
= ffs(config
->formats
) - 1;
3018 dev_warn(w
->dapm
->dev
, "Invalid format %llx specified\n",
3023 /* Currently very limited parameter selection */
3024 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3029 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3031 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3033 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3036 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3037 = config
->channels_min
;
3038 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3039 = config
->channels_max
;
3041 memset(&substream
, 0, sizeof(substream
));
3044 case SND_SOC_DAPM_PRE_PMU
:
3045 if (source
->driver
->ops
&& source
->driver
->ops
->hw_params
) {
3046 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3047 ret
= source
->driver
->ops
->hw_params(&substream
,
3050 dev_err(source
->dev
,
3051 "hw_params() failed: %d\n", ret
);
3056 if (sink
->driver
->ops
&& sink
->driver
->ops
->hw_params
) {
3057 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3058 ret
= sink
->driver
->ops
->hw_params(&substream
, params
,
3062 "hw_params() failed: %d\n", ret
);
3068 case SND_SOC_DAPM_POST_PMU
:
3069 ret
= snd_soc_dai_digital_mute(sink
, 0);
3070 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3071 dev_warn(sink
->dev
, "Failed to unmute: %d\n", ret
);
3075 case SND_SOC_DAPM_PRE_PMD
:
3076 ret
= snd_soc_dai_digital_mute(sink
, 1);
3077 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3078 dev_warn(sink
->dev
, "Failed to mute: %d\n", ret
);
3092 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3093 const struct snd_soc_pcm_stream
*params
,
3094 struct snd_soc_dapm_widget
*source
,
3095 struct snd_soc_dapm_widget
*sink
)
3097 struct snd_soc_dapm_route routes
[2];
3098 struct snd_soc_dapm_widget
template;
3099 struct snd_soc_dapm_widget
*w
;
3103 len
= strlen(source
->name
) + strlen(sink
->name
) + 2;
3104 link_name
= devm_kzalloc(card
->dev
, len
, GFP_KERNEL
);
3107 snprintf(link_name
, len
, "%s-%s", source
->name
, sink
->name
);
3109 memset(&template, 0, sizeof(template));
3110 template.reg
= SND_SOC_NOPM
;
3111 template.id
= snd_soc_dapm_dai_link
;
3112 template.name
= link_name
;
3113 template.event
= snd_soc_dai_link_event
;
3114 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3115 SND_SOC_DAPM_PRE_PMD
;
3117 dev_dbg(card
->dev
, "adding %s widget\n", link_name
);
3119 w
= snd_soc_dapm_new_control(&card
->dapm
, &template);
3121 dev_err(card
->dev
, "Failed to create %s widget\n",
3128 memset(&routes
, 0, sizeof(routes
));
3130 routes
[0].source
= source
->name
;
3131 routes
[0].sink
= link_name
;
3132 routes
[1].source
= link_name
;
3133 routes
[1].sink
= sink
->name
;
3135 return snd_soc_dapm_add_routes(&card
->dapm
, routes
,
3136 ARRAY_SIZE(routes
));
3139 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3140 struct snd_soc_dai
*dai
)
3142 struct snd_soc_dapm_widget
template;
3143 struct snd_soc_dapm_widget
*w
;
3145 WARN_ON(dapm
->dev
!= dai
->dev
);
3147 memset(&template, 0, sizeof(template));
3148 template.reg
= SND_SOC_NOPM
;
3150 if (dai
->driver
->playback
.stream_name
) {
3151 template.id
= snd_soc_dapm_dai
;
3152 template.name
= dai
->driver
->playback
.stream_name
;
3153 template.sname
= dai
->driver
->playback
.stream_name
;
3155 dev_dbg(dai
->dev
, "adding %s widget\n",
3158 w
= snd_soc_dapm_new_control(dapm
, &template);
3160 dev_err(dapm
->dev
, "Failed to create %s widget\n",
3161 dai
->driver
->playback
.stream_name
);
3165 dai
->playback_widget
= w
;
3168 if (dai
->driver
->capture
.stream_name
) {
3169 template.id
= snd_soc_dapm_dai
;
3170 template.name
= dai
->driver
->capture
.stream_name
;
3171 template.sname
= dai
->driver
->capture
.stream_name
;
3173 dev_dbg(dai
->dev
, "adding %s widget\n",
3176 w
= snd_soc_dapm_new_control(dapm
, &template);
3178 dev_err(dapm
->dev
, "Failed to create %s widget\n",
3179 dai
->driver
->capture
.stream_name
);
3183 dai
->capture_widget
= w
;
3189 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3191 struct snd_soc_dapm_widget
*dai_w
, *w
;
3192 struct snd_soc_dai
*dai
;
3193 struct snd_soc_dapm_route r
;
3195 memset(&r
, 0, sizeof(r
));
3197 /* For each DAI widget... */
3198 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3199 if (dai_w
->id
!= snd_soc_dapm_dai
)
3204 /* ...find all widgets with the same stream and link them */
3205 list_for_each_entry(w
, &card
->widgets
, list
) {
3206 if (w
->dapm
!= dai_w
->dapm
)
3209 if (w
->id
== snd_soc_dapm_dai
)
3215 if (dai
->driver
->playback
.stream_name
&&
3217 dai
->driver
->playback
.stream_name
)) {
3218 r
.source
= dai
->playback_widget
->name
;
3220 dev_dbg(dai
->dev
, "%s -> %s\n",
3223 snd_soc_dapm_add_route(w
->dapm
, &r
);
3226 if (dai
->driver
->capture
.stream_name
&&
3228 dai
->driver
->capture
.stream_name
)) {
3230 r
.sink
= dai
->capture_widget
->name
;
3231 dev_dbg(dai
->dev
, "%s -> %s\n",
3234 snd_soc_dapm_add_route(w
->dapm
, &r
);
3242 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3246 struct snd_soc_dapm_widget
*w_cpu
, *w_codec
;
3247 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3248 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
3250 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
3251 w_cpu
= cpu_dai
->playback_widget
;
3252 w_codec
= codec_dai
->playback_widget
;
3254 w_cpu
= cpu_dai
->capture_widget
;
3255 w_codec
= codec_dai
->capture_widget
;
3260 dapm_mark_dirty(w_cpu
, "stream event");
3263 case SND_SOC_DAPM_STREAM_START
:
3266 case SND_SOC_DAPM_STREAM_STOP
:
3269 case SND_SOC_DAPM_STREAM_SUSPEND
:
3270 case SND_SOC_DAPM_STREAM_RESUME
:
3271 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3272 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3279 dapm_mark_dirty(w_codec
, "stream event");
3282 case SND_SOC_DAPM_STREAM_START
:
3283 w_codec
->active
= 1;
3285 case SND_SOC_DAPM_STREAM_STOP
:
3286 w_codec
->active
= 0;
3288 case SND_SOC_DAPM_STREAM_SUSPEND
:
3289 case SND_SOC_DAPM_STREAM_RESUME
:
3290 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3291 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3296 dapm_power_widgets(&rtd
->card
->dapm
, event
);
3300 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3301 * @rtd: PCM runtime data
3302 * @stream: stream name
3303 * @event: stream event
3305 * Sends a stream event to the dapm core. The core then makes any
3306 * necessary widget power changes.
3308 * Returns 0 for success else error.
3310 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3313 struct snd_soc_card
*card
= rtd
->card
;
3315 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3316 soc_dapm_stream_event(rtd
, stream
, event
);
3317 mutex_unlock(&card
->dapm_mutex
);
3321 * snd_soc_dapm_enable_pin - enable pin.
3322 * @dapm: DAPM context
3325 * Enables input/output pin and its parents or children widgets iff there is
3326 * a valid audio route and active audio stream.
3327 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3328 * do any widget power switching.
3330 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3332 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
3334 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
3337 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3338 * @dapm: DAPM context
3341 * Enables input/output pin regardless of any other state. This is
3342 * intended for use with microphone bias supplies used in microphone
3345 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3346 * do any widget power switching.
3348 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
3351 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3354 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
3358 dev_dbg(w
->dapm
->dev
, "dapm: force enable pin %s\n", pin
);
3361 dapm_mark_dirty(w
, "force enable");
3365 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
3368 * snd_soc_dapm_disable_pin - disable pin.
3369 * @dapm: DAPM context
3372 * Disables input/output pin and its parents or children widgets.
3373 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3374 * do any widget power switching.
3376 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
3379 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3381 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
3384 * snd_soc_dapm_nc_pin - permanently disable pin.
3385 * @dapm: DAPM context
3388 * Marks the specified pin as being not connected, disabling it along
3389 * any parent or child widgets. At present this is identical to
3390 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3391 * additional things such as disabling controls which only affect
3392 * paths through the pin.
3394 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3395 * do any widget power switching.
3397 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3399 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3401 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
3404 * snd_soc_dapm_get_pin_status - get audio pin status
3405 * @dapm: DAPM context
3406 * @pin: audio signal pin endpoint (or start point)
3408 * Get audio pin status - connected or disconnected.
3410 * Returns 1 for connected otherwise 0.
3412 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
3415 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3418 return w
->connected
;
3422 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
3425 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3426 * @dapm: DAPM context
3427 * @pin: audio signal pin endpoint (or start point)
3429 * Mark the given endpoint or pin as ignoring suspend. When the
3430 * system is disabled a path between two endpoints flagged as ignoring
3431 * suspend will not be disabled. The path must already be enabled via
3432 * normal means at suspend time, it will not be turned on if it was not
3435 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
3438 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
3441 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
3445 w
->ignore_suspend
= 1;
3449 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
3451 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card
*card
,
3452 struct snd_soc_dapm_widget
*w
)
3454 struct snd_soc_dapm_path
*p
;
3456 list_for_each_entry(p
, &card
->paths
, list
) {
3457 if ((p
->source
== w
) || (p
->sink
== w
)) {
3459 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3460 p
->source
->name
, p
->source
->id
, p
->source
->dapm
,
3461 p
->sink
->name
, p
->sink
->id
, p
->sink
->dapm
);
3463 /* Connected to something other than the codec */
3464 if (p
->source
->dapm
!= p
->sink
->dapm
)
3467 * Loopback connection from codec external pin to
3468 * codec external pin
3470 if (p
->sink
->id
== snd_soc_dapm_input
) {
3471 switch (p
->source
->id
) {
3472 case snd_soc_dapm_output
:
3473 case snd_soc_dapm_micbias
:
3486 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3487 * @codec: The codec whose pins should be processed
3489 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3490 * which are unused. Pins are used if they are connected externally to the
3491 * codec, whether that be to some other device, or a loop-back connection to
3494 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec
*codec
)
3496 struct snd_soc_card
*card
= codec
->card
;
3497 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
3498 struct snd_soc_dapm_widget
*w
;
3500 dev_dbg(codec
->dev
, "Auto NC: DAPMs: card:%p codec:%p\n",
3501 &card
->dapm
, &codec
->dapm
);
3503 list_for_each_entry(w
, &card
->widgets
, list
) {
3504 if (w
->dapm
!= dapm
)
3507 case snd_soc_dapm_input
:
3508 case snd_soc_dapm_output
:
3509 case snd_soc_dapm_micbias
:
3510 dev_dbg(codec
->dev
, "Auto NC: Checking widget %s\n",
3512 if (!snd_soc_dapm_widget_in_card_paths(card
, w
)) {
3514 "... Not in map; disabling\n");
3515 snd_soc_dapm_nc_pin(dapm
, w
->name
);
3525 * snd_soc_dapm_free - free dapm resources
3526 * @dapm: DAPM context
3528 * Free all dapm widgets and resources.
3530 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
3532 snd_soc_dapm_sys_remove(dapm
->dev
);
3533 dapm_debugfs_cleanup(dapm
);
3534 dapm_free_widgets(dapm
);
3535 list_del(&dapm
->list
);
3537 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
3539 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context
*dapm
)
3541 struct snd_soc_dapm_widget
*w
;
3542 LIST_HEAD(down_list
);
3545 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
3546 if (w
->dapm
!= dapm
)
3549 dapm_seq_insert(w
, &down_list
, false);
3555 /* If there were no widgets to power down we're already in
3559 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
3560 snd_soc_dapm_set_bias_level(dapm
,
3561 SND_SOC_BIAS_PREPARE
);
3562 dapm_seq_run(dapm
, &down_list
, 0, false);
3563 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
3564 snd_soc_dapm_set_bias_level(dapm
,
3565 SND_SOC_BIAS_STANDBY
);
3570 * snd_soc_dapm_shutdown - callback for system shutdown
3572 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
3574 struct snd_soc_codec
*codec
;
3576 list_for_each_entry(codec
, &card
->codec_dev_list
, list
) {
3577 soc_dapm_shutdown_codec(&codec
->dapm
);
3578 if (codec
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
3579 snd_soc_dapm_set_bias_level(&codec
->dapm
,
3584 /* Module information */
3585 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3586 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3587 MODULE_LICENSE("GPL");