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 /* dapm power sequences - make this per codec in the future */
51 static int dapm_up_seq
[] = {
52 [snd_soc_dapm_pre
] = 0,
53 [snd_soc_dapm_supply
] = 1,
54 [snd_soc_dapm_regulator_supply
] = 1,
55 [snd_soc_dapm_clock_supply
] = 1,
56 [snd_soc_dapm_micbias
] = 2,
57 [snd_soc_dapm_dai_link
] = 2,
58 [snd_soc_dapm_dai
] = 3,
59 [snd_soc_dapm_aif_in
] = 3,
60 [snd_soc_dapm_aif_out
] = 3,
61 [snd_soc_dapm_mic
] = 4,
62 [snd_soc_dapm_mux
] = 5,
63 [snd_soc_dapm_virt_mux
] = 5,
64 [snd_soc_dapm_value_mux
] = 5,
65 [snd_soc_dapm_dac
] = 6,
66 [snd_soc_dapm_mixer
] = 7,
67 [snd_soc_dapm_mixer_named_ctl
] = 7,
68 [snd_soc_dapm_pga
] = 8,
69 [snd_soc_dapm_adc
] = 9,
70 [snd_soc_dapm_out_drv
] = 10,
71 [snd_soc_dapm_hp
] = 10,
72 [snd_soc_dapm_spk
] = 10,
73 [snd_soc_dapm_line
] = 10,
74 [snd_soc_dapm_post
] = 11,
77 static int dapm_down_seq
[] = {
78 [snd_soc_dapm_pre
] = 0,
79 [snd_soc_dapm_adc
] = 1,
80 [snd_soc_dapm_hp
] = 2,
81 [snd_soc_dapm_spk
] = 2,
82 [snd_soc_dapm_line
] = 2,
83 [snd_soc_dapm_out_drv
] = 2,
84 [snd_soc_dapm_pga
] = 4,
85 [snd_soc_dapm_mixer_named_ctl
] = 5,
86 [snd_soc_dapm_mixer
] = 5,
87 [snd_soc_dapm_dac
] = 6,
88 [snd_soc_dapm_mic
] = 7,
89 [snd_soc_dapm_micbias
] = 8,
90 [snd_soc_dapm_mux
] = 9,
91 [snd_soc_dapm_virt_mux
] = 9,
92 [snd_soc_dapm_value_mux
] = 9,
93 [snd_soc_dapm_aif_in
] = 10,
94 [snd_soc_dapm_aif_out
] = 10,
95 [snd_soc_dapm_dai
] = 10,
96 [snd_soc_dapm_dai_link
] = 11,
97 [snd_soc_dapm_clock_supply
] = 12,
98 [snd_soc_dapm_regulator_supply
] = 12,
99 [snd_soc_dapm_supply
] = 12,
100 [snd_soc_dapm_post
] = 13,
103 static void pop_wait(u32 pop_time
)
106 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
109 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
117 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
122 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
123 dev_info(dev
, "%s", buf
);
129 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
131 return !list_empty(&w
->dirty
);
134 void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
136 if (!dapm_dirty_widget(w
)) {
137 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
139 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
142 EXPORT_SYMBOL_GPL(dapm_mark_dirty
);
144 void dapm_mark_io_dirty(struct snd_soc_dapm_context
*dapm
)
146 struct snd_soc_card
*card
= dapm
->card
;
147 struct snd_soc_dapm_widget
*w
;
149 mutex_lock(&card
->dapm_mutex
);
151 list_for_each_entry(w
, &card
->widgets
, list
) {
153 case snd_soc_dapm_input
:
154 case snd_soc_dapm_output
:
155 dapm_mark_dirty(w
, "Rechecking inputs and outputs");
162 mutex_unlock(&card
->dapm_mutex
);
164 EXPORT_SYMBOL_GPL(dapm_mark_io_dirty
);
166 /* create a new dapm widget */
167 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
168 const struct snd_soc_dapm_widget
*_widget
)
170 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
173 /* get snd_card from DAPM context */
174 static inline struct snd_card
*dapm_get_snd_card(
175 struct snd_soc_dapm_context
*dapm
)
178 return dapm
->codec
->card
->snd_card
;
179 else if (dapm
->platform
)
180 return dapm
->platform
->card
->snd_card
;
188 /* get soc_card from DAPM context */
189 static inline struct snd_soc_card
*dapm_get_soc_card(
190 struct snd_soc_dapm_context
*dapm
)
193 return dapm
->codec
->card
;
194 else if (dapm
->platform
)
195 return dapm
->platform
->card
;
203 static void dapm_reset(struct snd_soc_card
*card
)
205 struct snd_soc_dapm_widget
*w
;
207 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
209 list_for_each_entry(w
, &card
->widgets
, list
) {
210 w
->power_checked
= false;
216 static int soc_widget_read(struct snd_soc_dapm_widget
*w
, int reg
)
219 return snd_soc_read(w
->codec
, reg
);
220 else if (w
->platform
)
221 return snd_soc_platform_read(w
->platform
, reg
);
223 dev_err(w
->dapm
->dev
, "ASoC: no valid widget read method\n");
227 static int soc_widget_write(struct snd_soc_dapm_widget
*w
, int reg
, int val
)
230 return snd_soc_write(w
->codec
, reg
, val
);
231 else if (w
->platform
)
232 return snd_soc_platform_write(w
->platform
, reg
, val
);
234 dev_err(w
->dapm
->dev
, "ASoC: no valid widget write method\n");
238 static inline void soc_widget_lock(struct snd_soc_dapm_widget
*w
)
240 if (w
->codec
&& !w
->codec
->using_regmap
)
241 mutex_lock(&w
->codec
->mutex
);
242 else if (w
->platform
)
243 mutex_lock(&w
->platform
->mutex
);
246 static inline void soc_widget_unlock(struct snd_soc_dapm_widget
*w
)
248 if (w
->codec
&& !w
->codec
->using_regmap
)
249 mutex_unlock(&w
->codec
->mutex
);
250 else if (w
->platform
)
251 mutex_unlock(&w
->platform
->mutex
);
254 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget
*w
,
255 unsigned short reg
, unsigned int mask
, unsigned int value
)
258 unsigned int old
, new;
261 if (w
->codec
&& w
->codec
->using_regmap
) {
262 ret
= regmap_update_bits_check(w
->codec
->control_data
,
263 reg
, mask
, value
, &change
);
268 ret
= soc_widget_read(w
, reg
);
270 soc_widget_unlock(w
);
275 new = (old
& ~mask
) | (value
& mask
);
278 ret
= soc_widget_write(w
, reg
, new);
280 soc_widget_unlock(w
);
284 soc_widget_unlock(w
);
291 * snd_soc_dapm_set_bias_level - set the bias level for the system
292 * @dapm: DAPM context
293 * @level: level to configure
295 * Configure the bias (power) levels for the SoC audio device.
297 * Returns 0 for success else error.
299 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
300 enum snd_soc_bias_level level
)
302 struct snd_soc_card
*card
= dapm
->card
;
305 trace_snd_soc_bias_level_start(card
, level
);
307 if (card
&& card
->set_bias_level
)
308 ret
= card
->set_bias_level(card
, dapm
, level
);
313 if (dapm
->codec
->driver
->set_bias_level
)
314 ret
= dapm
->codec
->driver
->set_bias_level(dapm
->codec
,
317 dapm
->bias_level
= level
;
318 } else if (!card
|| dapm
!= &card
->dapm
) {
319 dapm
->bias_level
= level
;
325 if (card
&& card
->set_bias_level_post
)
326 ret
= card
->set_bias_level_post(card
, dapm
, level
);
328 trace_snd_soc_bias_level_done(card
, level
);
333 /* set up initial codec paths */
334 static void dapm_set_path_status(struct snd_soc_dapm_widget
*w
,
335 struct snd_soc_dapm_path
*p
, int i
)
338 case snd_soc_dapm_switch
:
339 case snd_soc_dapm_mixer
:
340 case snd_soc_dapm_mixer_named_ctl
: {
342 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
343 w
->kcontrol_news
[i
].private_value
;
344 unsigned int reg
= mc
->reg
;
345 unsigned int shift
= mc
->shift
;
347 unsigned int mask
= (1 << fls(max
)) - 1;
348 unsigned int invert
= mc
->invert
;
350 val
= soc_widget_read(w
, reg
);
351 val
= (val
>> shift
) & mask
;
358 case snd_soc_dapm_mux
: {
359 struct soc_enum
*e
= (struct soc_enum
*)
360 w
->kcontrol_news
[i
].private_value
;
363 val
= soc_widget_read(w
, e
->reg
);
364 item
= (val
>> e
->shift_l
) & e
->mask
;
367 for (i
= 0; i
< e
->max
; i
++) {
368 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
373 case snd_soc_dapm_virt_mux
: {
374 struct soc_enum
*e
= (struct soc_enum
*)
375 w
->kcontrol_news
[i
].private_value
;
378 /* since a virtual mux has no backing registers to
379 * decide which path to connect, it will try to match
380 * with the first enumeration. This is to ensure
381 * that the default mux choice (the first) will be
382 * correctly powered up during initialization.
384 if (!strcmp(p
->name
, e
->texts
[0]))
388 case snd_soc_dapm_value_mux
: {
389 struct soc_enum
*e
= (struct soc_enum
*)
390 w
->kcontrol_news
[i
].private_value
;
393 val
= soc_widget_read(w
, e
->reg
);
394 val
= (val
>> e
->shift_l
) & e
->mask
;
395 for (item
= 0; item
< e
->max
; item
++) {
396 if (val
== e
->values
[item
])
401 for (i
= 0; i
< e
->max
; i
++) {
402 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
407 /* does not affect routing - always connected */
408 case snd_soc_dapm_pga
:
409 case snd_soc_dapm_out_drv
:
410 case snd_soc_dapm_output
:
411 case snd_soc_dapm_adc
:
412 case snd_soc_dapm_input
:
413 case snd_soc_dapm_siggen
:
414 case snd_soc_dapm_dac
:
415 case snd_soc_dapm_micbias
:
416 case snd_soc_dapm_vmid
:
417 case snd_soc_dapm_supply
:
418 case snd_soc_dapm_regulator_supply
:
419 case snd_soc_dapm_clock_supply
:
420 case snd_soc_dapm_aif_in
:
421 case snd_soc_dapm_aif_out
:
422 case snd_soc_dapm_dai
:
423 case snd_soc_dapm_hp
:
424 case snd_soc_dapm_mic
:
425 case snd_soc_dapm_spk
:
426 case snd_soc_dapm_line
:
427 case snd_soc_dapm_dai_link
:
430 /* does affect routing - dynamically connected */
431 case snd_soc_dapm_pre
:
432 case snd_soc_dapm_post
:
438 /* connect mux widget to its interconnecting audio paths */
439 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
440 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
441 struct snd_soc_dapm_path
*path
, const char *control_name
,
442 const struct snd_kcontrol_new
*kcontrol
)
444 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
447 for (i
= 0; i
< e
->max
; i
++) {
448 if (!(strcmp(control_name
, e
->texts
[i
]))) {
449 list_add(&path
->list
, &dapm
->card
->paths
);
450 list_add(&path
->list_sink
, &dest
->sources
);
451 list_add(&path
->list_source
, &src
->sinks
);
452 path
->name
= (char*)e
->texts
[i
];
453 dapm_set_path_status(dest
, path
, 0);
461 /* connect mixer widget to its interconnecting audio paths */
462 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
463 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
464 struct snd_soc_dapm_path
*path
, const char *control_name
)
468 /* search for mixer kcontrol */
469 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
470 if (!strcmp(control_name
, dest
->kcontrol_news
[i
].name
)) {
471 list_add(&path
->list
, &dapm
->card
->paths
);
472 list_add(&path
->list_sink
, &dest
->sources
);
473 list_add(&path
->list_source
, &src
->sinks
);
474 path
->name
= dest
->kcontrol_news
[i
].name
;
475 dapm_set_path_status(dest
, path
, i
);
482 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
483 struct snd_soc_dapm_widget
*kcontrolw
,
484 const struct snd_kcontrol_new
*kcontrol_new
,
485 struct snd_kcontrol
**kcontrol
)
487 struct snd_soc_dapm_widget
*w
;
492 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
493 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
495 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
496 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
498 *kcontrol
= w
->kcontrols
[i
];
507 /* create new dapm mixer control */
508 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
510 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
512 size_t name_len
, prefix_len
;
513 struct snd_soc_dapm_path
*path
;
514 struct snd_card
*card
= dapm
->card
->snd_card
;
516 struct snd_soc_dapm_widget_list
*wlist
;
520 prefix
= dapm
->codec
->name_prefix
;
525 prefix_len
= strlen(prefix
) + 1;
530 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
533 list_for_each_entry(path
, &w
->sources
, list_sink
) {
535 /* mixer/mux paths name must match control name */
536 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
539 if (w
->kcontrols
[i
]) {
540 path
->kcontrol
= w
->kcontrols
[i
];
544 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
545 sizeof(struct snd_soc_dapm_widget
*),
546 wlist
= kzalloc(wlistsize
, GFP_KERNEL
);
549 "ASoC: can't allocate widget list for %s\n",
553 wlist
->num_widgets
= 1;
554 wlist
->widgets
[0] = w
;
556 /* add dapm control with long name.
557 * for dapm_mixer this is the concatenation of the
558 * mixer and kcontrol name.
559 * for dapm_mixer_named_ctl this is simply the
562 name_len
= strlen(w
->kcontrol_news
[i
].name
) + 1;
563 if (w
->id
!= snd_soc_dapm_mixer_named_ctl
)
564 name_len
+= 1 + strlen(w
->name
);
566 path
->long_name
= kmalloc(name_len
, GFP_KERNEL
);
568 if (path
->long_name
== NULL
) {
575 /* The control will get a prefix from
576 * the control creation process but
577 * we're also using the same prefix
578 * for widgets so cut the prefix off
579 * the front of the widget name.
581 snprintf((char *)path
->long_name
, name_len
,
582 "%s %s", w
->name
+ prefix_len
,
583 w
->kcontrol_news
[i
].name
);
585 case snd_soc_dapm_mixer_named_ctl
:
586 snprintf((char *)path
->long_name
, name_len
,
587 "%s", w
->kcontrol_news
[i
].name
);
591 ((char *)path
->long_name
)[name_len
- 1] = '\0';
593 path
->kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
],
594 wlist
, path
->long_name
,
596 ret
= snd_ctl_add(card
, path
->kcontrol
);
598 dev_err(dapm
->dev
, "ASoC: failed to add widget"
599 " %s dapm kcontrol %s: %d\n",
600 w
->name
, path
->long_name
, ret
);
602 kfree(path
->long_name
);
603 path
->long_name
= NULL
;
606 w
->kcontrols
[i
] = path
->kcontrol
;
612 /* create new dapm mux control */
613 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
615 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
616 struct snd_soc_dapm_path
*path
= NULL
;
617 struct snd_kcontrol
*kcontrol
;
618 struct snd_card
*card
= dapm
->card
->snd_card
;
622 struct snd_soc_dapm_widget_list
*wlist
;
623 int shared
, wlistentries
;
627 if (w
->num_kcontrols
!= 1) {
629 "ASoC: mux %s has incorrect number of controls\n",
634 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[0],
637 wlist
= kcontrol
->private_data
;
638 wlistentries
= wlist
->num_widgets
+ 1;
643 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
644 wlistentries
* sizeof(struct snd_soc_dapm_widget
*),
645 wlist
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
648 "ASoC: can't allocate widget list for %s\n", w
->name
);
651 wlist
->num_widgets
= wlistentries
;
652 wlist
->widgets
[wlistentries
- 1] = w
;
656 prefix
= dapm
->codec
->name_prefix
;
661 name
= w
->kcontrol_news
[0].name
;
666 prefix_len
= strlen(prefix
) + 1;
672 * The control will get a prefix from the control creation
673 * process but we're also using the same prefix for widgets so
674 * cut the prefix off the front of the widget name.
676 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[0], wlist
,
677 name
+ prefix_len
, prefix
);
678 ret
= snd_ctl_add(card
, kcontrol
);
680 dev_err(dapm
->dev
, "ASoC: failed to add kcontrol %s: %d\n",
687 kcontrol
->private_data
= wlist
;
689 w
->kcontrols
[0] = kcontrol
;
691 list_for_each_entry(path
, &w
->sources
, list_sink
)
692 path
->kcontrol
= kcontrol
;
697 /* create new dapm volume control */
698 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
700 if (w
->num_kcontrols
)
701 dev_err(w
->dapm
->dev
,
702 "ASoC: PGA controls not supported: '%s'\n", w
->name
);
707 /* reset 'walked' bit for each dapm path */
708 static inline void dapm_clear_walk(struct snd_soc_dapm_context
*dapm
)
710 struct snd_soc_dapm_path
*p
;
712 list_for_each_entry(p
, &dapm
->card
->paths
, list
)
716 /* We implement power down on suspend by checking the power state of
717 * the ALSA card - when we are suspending the ALSA state for the card
720 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
722 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
725 case SNDRV_CTL_POWER_D3hot
:
726 case SNDRV_CTL_POWER_D3cold
:
727 if (widget
->ignore_suspend
)
728 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
730 return widget
->ignore_suspend
;
736 /* add widget to list if it's not already in the list */
737 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list
**list
,
738 struct snd_soc_dapm_widget
*w
)
740 struct snd_soc_dapm_widget_list
*wlist
;
741 int wlistsize
, wlistentries
, i
;
748 /* is this widget already in the list */
749 for (i
= 0; i
< wlist
->num_widgets
; i
++) {
750 if (wlist
->widgets
[i
] == w
)
754 /* allocate some new space */
755 wlistentries
= wlist
->num_widgets
+ 1;
756 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
757 wlistentries
* sizeof(struct snd_soc_dapm_widget
*);
758 *list
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
760 dev_err(w
->dapm
->dev
, "ASoC: can't allocate widget list for %s\n",
766 /* insert the widget */
767 dev_dbg(w
->dapm
->dev
, "ASoC: added %s in widget list pos %d\n",
768 w
->name
, wlist
->num_widgets
);
770 wlist
->widgets
[wlist
->num_widgets
] = w
;
771 wlist
->num_widgets
++;
776 * Recursively check for a completed path to an active or physically connected
777 * output widget. Returns number of complete paths.
779 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
780 struct snd_soc_dapm_widget_list
**list
)
782 struct snd_soc_dapm_path
*path
;
785 if (widget
->outputs
>= 0)
786 return widget
->outputs
;
788 DAPM_UPDATE_STAT(widget
, path_checks
);
790 switch (widget
->id
) {
791 case snd_soc_dapm_supply
:
792 case snd_soc_dapm_regulator_supply
:
793 case snd_soc_dapm_clock_supply
:
799 switch (widget
->id
) {
800 case snd_soc_dapm_adc
:
801 case snd_soc_dapm_aif_out
:
802 case snd_soc_dapm_dai
:
803 if (widget
->active
) {
804 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
805 return widget
->outputs
;
811 if (widget
->connected
) {
812 /* connected pin ? */
813 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
) {
814 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
815 return widget
->outputs
;
818 /* connected jack or spk ? */
819 if (widget
->id
== snd_soc_dapm_hp
||
820 widget
->id
== snd_soc_dapm_spk
||
821 (widget
->id
== snd_soc_dapm_line
&&
822 !list_empty(&widget
->sources
))) {
823 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
824 return widget
->outputs
;
828 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
829 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
837 trace_snd_soc_dapm_output_path(widget
, path
);
839 if (path
->sink
&& path
->connect
) {
842 /* do we need to add this widget to the list ? */
845 err
= dapm_list_add_widget(list
, path
->sink
);
847 dev_err(widget
->dapm
->dev
,
848 "ASoC: could not add widget %s\n",
854 con
+= is_connected_output_ep(path
->sink
, list
);
858 widget
->outputs
= con
;
864 * Recursively check for a completed path to an active or physically connected
865 * input widget. Returns number of complete paths.
867 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
868 struct snd_soc_dapm_widget_list
**list
)
870 struct snd_soc_dapm_path
*path
;
873 if (widget
->inputs
>= 0)
874 return widget
->inputs
;
876 DAPM_UPDATE_STAT(widget
, path_checks
);
878 switch (widget
->id
) {
879 case snd_soc_dapm_supply
:
880 case snd_soc_dapm_regulator_supply
:
881 case snd_soc_dapm_clock_supply
:
887 /* active stream ? */
888 switch (widget
->id
) {
889 case snd_soc_dapm_dac
:
890 case snd_soc_dapm_aif_in
:
891 case snd_soc_dapm_dai
:
892 if (widget
->active
) {
893 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
894 return widget
->inputs
;
900 if (widget
->connected
) {
901 /* connected pin ? */
902 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
) {
903 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
904 return widget
->inputs
;
907 /* connected VMID/Bias for lower pops */
908 if (widget
->id
== snd_soc_dapm_vmid
) {
909 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
910 return widget
->inputs
;
913 /* connected jack ? */
914 if (widget
->id
== snd_soc_dapm_mic
||
915 (widget
->id
== snd_soc_dapm_line
&&
916 !list_empty(&widget
->sinks
))) {
917 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
918 return widget
->inputs
;
921 /* signal generator */
922 if (widget
->id
== snd_soc_dapm_siggen
) {
923 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
924 return widget
->inputs
;
928 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
929 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
937 trace_snd_soc_dapm_input_path(widget
, path
);
939 if (path
->source
&& path
->connect
) {
942 /* do we need to add this widget to the list ? */
945 err
= dapm_list_add_widget(list
, path
->source
);
947 dev_err(widget
->dapm
->dev
,
948 "ASoC: could not add widget %s\n",
954 con
+= is_connected_input_ep(path
->source
, list
);
958 widget
->inputs
= con
;
964 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
966 * @stream: stream direction.
967 * @list: list of active widgets for this stream.
969 * Queries DAPM graph as to whether an valid audio stream path exists for
970 * the initial stream specified by name. This takes into account
971 * current mixer and mux kcontrol settings. Creates list of valid widgets.
973 * Returns the number of valid paths or negative error.
975 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
976 struct snd_soc_dapm_widget_list
**list
)
978 struct snd_soc_card
*card
= dai
->card
;
981 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
984 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
985 paths
= is_connected_output_ep(dai
->playback_widget
, list
);
987 paths
= is_connected_input_ep(dai
->capture_widget
, list
);
989 trace_snd_soc_dapm_connected(paths
, stream
);
990 dapm_clear_walk(&card
->dapm
);
991 mutex_unlock(&card
->dapm_mutex
);
997 * Handler for generic register modifier widget.
999 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
1000 struct snd_kcontrol
*kcontrol
, int event
)
1004 if (SND_SOC_DAPM_EVENT_ON(event
))
1009 soc_widget_update_bits_locked(w
, -(w
->reg
+ 1),
1010 w
->mask
<< w
->shift
, val
<< w
->shift
);
1014 EXPORT_SYMBOL_GPL(dapm_reg_event
);
1017 * Handler for regulator supply widget.
1019 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1020 struct snd_kcontrol
*kcontrol
, int event
)
1024 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1025 if (w
->invert
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1026 ret
= regulator_allow_bypass(w
->regulator
, false);
1028 dev_warn(w
->dapm
->dev
,
1029 "ASoC: Failed to bypass %s: %d\n",
1033 return regulator_enable(w
->regulator
);
1035 if (w
->invert
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1036 ret
= regulator_allow_bypass(w
->regulator
, true);
1038 dev_warn(w
->dapm
->dev
,
1039 "ASoC: Failed to unbypass %s: %d\n",
1043 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1046 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1049 * Handler for clock supply widget.
1051 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1052 struct snd_kcontrol
*kcontrol
, int event
)
1057 #ifdef CONFIG_HAVE_CLK
1058 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1059 return clk_enable(w
->clk
);
1061 clk_disable(w
->clk
);
1067 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1069 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1071 if (w
->power_checked
)
1072 return w
->new_power
;
1077 w
->new_power
= w
->power_check(w
);
1079 w
->power_checked
= true;
1081 return w
->new_power
;
1084 /* Generic check to see if a widget should be powered.
1086 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1090 DAPM_UPDATE_STAT(w
, power_checks
);
1092 in
= is_connected_input_ep(w
, NULL
);
1093 dapm_clear_walk(w
->dapm
);
1094 out
= is_connected_output_ep(w
, NULL
);
1095 dapm_clear_walk(w
->dapm
);
1096 return out
!= 0 && in
!= 0;
1099 static int dapm_dai_check_power(struct snd_soc_dapm_widget
*w
)
1101 DAPM_UPDATE_STAT(w
, power_checks
);
1106 return dapm_generic_check_power(w
);
1109 /* Check to see if an ADC has power */
1110 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
1114 DAPM_UPDATE_STAT(w
, power_checks
);
1117 in
= is_connected_input_ep(w
, NULL
);
1118 dapm_clear_walk(w
->dapm
);
1121 return dapm_generic_check_power(w
);
1125 /* Check to see if a DAC has power */
1126 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
1130 DAPM_UPDATE_STAT(w
, power_checks
);
1133 out
= is_connected_output_ep(w
, NULL
);
1134 dapm_clear_walk(w
->dapm
);
1137 return dapm_generic_check_power(w
);
1141 /* Check to see if a power supply is needed */
1142 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1144 struct snd_soc_dapm_path
*path
;
1146 DAPM_UPDATE_STAT(w
, power_checks
);
1148 /* Check if one of our outputs is connected */
1149 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1150 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1155 if (path
->connected
&&
1156 !path
->connected(path
->source
, path
->sink
))
1162 if (dapm_widget_power_check(path
->sink
))
1166 dapm_clear_walk(w
->dapm
);
1171 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1176 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1177 struct snd_soc_dapm_widget
*b
,
1185 sort
= dapm_down_seq
;
1187 if (sort
[a
->id
] != sort
[b
->id
])
1188 return sort
[a
->id
] - sort
[b
->id
];
1189 if (a
->subseq
!= b
->subseq
) {
1191 return a
->subseq
- b
->subseq
;
1193 return b
->subseq
- a
->subseq
;
1195 if (a
->reg
!= b
->reg
)
1196 return a
->reg
- b
->reg
;
1197 if (a
->dapm
!= b
->dapm
)
1198 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1203 /* Insert a widget in order into a DAPM power sequence. */
1204 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1205 struct list_head
*list
,
1208 struct snd_soc_dapm_widget
*w
;
1210 list_for_each_entry(w
, list
, power_list
)
1211 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1212 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1216 list_add_tail(&new_widget
->power_list
, list
);
1219 static void dapm_seq_check_event(struct snd_soc_dapm_context
*dapm
,
1220 struct snd_soc_dapm_widget
*w
, int event
)
1222 struct snd_soc_card
*card
= dapm
->card
;
1223 const char *ev_name
;
1227 case SND_SOC_DAPM_PRE_PMU
:
1228 ev_name
= "PRE_PMU";
1231 case SND_SOC_DAPM_POST_PMU
:
1232 ev_name
= "POST_PMU";
1235 case SND_SOC_DAPM_PRE_PMD
:
1236 ev_name
= "PRE_PMD";
1239 case SND_SOC_DAPM_POST_PMD
:
1240 ev_name
= "POST_PMD";
1248 if (w
->power
!= power
)
1251 if (w
->event
&& (w
->event_flags
& event
)) {
1252 pop_dbg(dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1254 trace_snd_soc_dapm_widget_event_start(w
, event
);
1255 ret
= w
->event(w
, NULL
, event
);
1256 trace_snd_soc_dapm_widget_event_done(w
, event
);
1258 dev_err(dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1259 ev_name
, w
->name
, ret
);
1263 /* Apply the coalesced changes from a DAPM sequence */
1264 static void dapm_seq_run_coalesced(struct snd_soc_dapm_context
*dapm
,
1265 struct list_head
*pending
)
1267 struct snd_soc_card
*card
= dapm
->card
;
1268 struct snd_soc_dapm_widget
*w
;
1270 unsigned int value
= 0;
1271 unsigned int mask
= 0;
1272 unsigned int cur_mask
;
1274 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1277 list_for_each_entry(w
, pending
, power_list
) {
1278 cur_mask
= 1 << w
->shift
;
1279 BUG_ON(reg
!= w
->reg
);
1290 pop_dbg(dapm
->dev
, card
->pop_time
,
1291 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1292 w
->name
, reg
, value
, mask
);
1294 /* Check for events */
1295 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMU
);
1296 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMD
);
1300 /* Any widget will do, they should all be updating the
1303 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1306 pop_dbg(dapm
->dev
, card
->pop_time
,
1307 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1308 value
, mask
, reg
, card
->pop_time
);
1309 pop_wait(card
->pop_time
);
1310 soc_widget_update_bits_locked(w
, reg
, mask
, value
);
1313 list_for_each_entry(w
, pending
, power_list
) {
1314 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMU
);
1315 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMD
);
1319 /* Apply a DAPM power sequence.
1321 * We walk over a pre-sorted list of widgets to apply power to. In
1322 * order to minimise the number of writes to the device required
1323 * multiple widgets will be updated in a single write where possible.
1324 * Currently anything that requires more than a single write is not
1327 static void dapm_seq_run(struct snd_soc_dapm_context
*dapm
,
1328 struct list_head
*list
, int event
, bool power_up
)
1330 struct snd_soc_dapm_widget
*w
, *n
;
1333 int cur_subseq
= -1;
1334 int cur_reg
= SND_SOC_NOPM
;
1335 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1342 sort
= dapm_down_seq
;
1344 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1347 /* Do we need to apply any queued changes? */
1348 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1349 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1350 if (!list_empty(&pending
))
1351 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1353 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1354 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1355 if (sort
[i
] == cur_sort
)
1356 cur_dapm
->seq_notifier(cur_dapm
,
1361 INIT_LIST_HEAD(&pending
);
1363 cur_subseq
= INT_MIN
;
1364 cur_reg
= SND_SOC_NOPM
;
1369 case snd_soc_dapm_pre
:
1371 list_for_each_entry_safe_continue(w
, n
, list
,
1374 if (event
== SND_SOC_DAPM_STREAM_START
)
1376 NULL
, SND_SOC_DAPM_PRE_PMU
);
1377 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1379 NULL
, SND_SOC_DAPM_PRE_PMD
);
1382 case snd_soc_dapm_post
:
1384 list_for_each_entry_safe_continue(w
, n
, list
,
1387 if (event
== SND_SOC_DAPM_STREAM_START
)
1389 NULL
, SND_SOC_DAPM_POST_PMU
);
1390 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1392 NULL
, SND_SOC_DAPM_POST_PMD
);
1396 /* Queue it up for application */
1397 cur_sort
= sort
[w
->id
];
1398 cur_subseq
= w
->subseq
;
1401 list_move(&w
->power_list
, &pending
);
1406 dev_err(w
->dapm
->dev
,
1407 "ASoC: Failed to apply widget power: %d\n", ret
);
1410 if (!list_empty(&pending
))
1411 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1413 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1414 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1415 if (sort
[i
] == cur_sort
)
1416 cur_dapm
->seq_notifier(cur_dapm
,
1421 static void dapm_widget_update(struct snd_soc_dapm_context
*dapm
)
1423 struct snd_soc_dapm_update
*update
= dapm
->update
;
1424 struct snd_soc_dapm_widget
*w
;
1433 (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1434 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1436 dev_err(dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1440 ret
= soc_widget_update_bits_locked(w
, update
->reg
, update
->mask
,
1443 dev_err(dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1447 (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1448 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1450 dev_err(dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1455 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1456 * they're changing state.
1458 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1460 struct snd_soc_dapm_context
*d
= data
;
1463 /* If we're off and we're not supposed to be go into STANDBY */
1464 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1465 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1467 pm_runtime_get_sync(d
->dev
);
1469 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1472 "ASoC: Failed to turn on bias: %d\n", ret
);
1475 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1476 if (d
->bias_level
!= d
->target_bias_level
) {
1477 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1480 "ASoC: Failed to prepare bias: %d\n", ret
);
1484 /* Async callback run prior to DAPM sequences - brings to their final
1487 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1489 struct snd_soc_dapm_context
*d
= data
;
1492 /* If we just powered the last thing off drop to standby bias */
1493 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1494 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1495 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1496 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1498 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1502 /* If we're in standby and can support bias off then do that */
1503 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1504 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1505 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1507 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1511 pm_runtime_put(d
->dev
);
1514 /* If we just powered up then move to active bias */
1515 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1516 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1517 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1519 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1524 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1525 bool power
, bool connect
)
1527 /* If a connection is being made or broken then that update
1528 * will have marked the peer dirty, otherwise the widgets are
1529 * not connected and this update has no impact. */
1533 /* If the peer is already in the state we're moving to then we
1534 * won't have an impact on it. */
1535 if (power
!= peer
->power
)
1536 dapm_mark_dirty(peer
, "peer state change");
1539 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1540 struct list_head
*up_list
,
1541 struct list_head
*down_list
)
1543 struct snd_soc_dapm_path
*path
;
1545 if (w
->power
== power
)
1548 trace_snd_soc_dapm_widget_power(w
, power
);
1550 /* If we changed our power state perhaps our neigbours changed
1553 list_for_each_entry(path
, &w
->sources
, list_sink
) {
1555 dapm_widget_set_peer_power(path
->source
, power
,
1560 case snd_soc_dapm_supply
:
1561 case snd_soc_dapm_regulator_supply
:
1562 case snd_soc_dapm_clock_supply
:
1563 /* Supplies can't affect their outputs, only their inputs */
1566 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1568 dapm_widget_set_peer_power(path
->sink
, power
,
1576 dapm_seq_insert(w
, up_list
, true);
1578 dapm_seq_insert(w
, down_list
, false);
1583 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1584 struct list_head
*up_list
,
1585 struct list_head
*down_list
)
1590 case snd_soc_dapm_pre
:
1591 dapm_seq_insert(w
, down_list
, false);
1593 case snd_soc_dapm_post
:
1594 dapm_seq_insert(w
, up_list
, true);
1598 power
= dapm_widget_power_check(w
);
1600 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1606 * Scan each dapm widget for complete audio path.
1607 * A complete path is a route that has valid endpoints i.e.:-
1609 * o DAC to output pin.
1610 * o Input Pin to ADC.
1611 * o Input pin to Output pin (bypass, sidetone)
1612 * o DAC to ADC (loopback).
1614 static int dapm_power_widgets(struct snd_soc_dapm_context
*dapm
, int event
)
1616 struct snd_soc_card
*card
= dapm
->card
;
1617 struct snd_soc_dapm_widget
*w
;
1618 struct snd_soc_dapm_context
*d
;
1620 LIST_HEAD(down_list
);
1621 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1622 enum snd_soc_bias_level bias
;
1624 trace_snd_soc_dapm_start(card
);
1626 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1627 if (d
->idle_bias_off
)
1628 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1630 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1635 /* Check which widgets we need to power and store them in
1636 * lists indicating if they should be powered up or down. We
1637 * only check widgets that have been flagged as dirty but note
1638 * that new widgets may be added to the dirty list while we
1641 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1642 dapm_power_one_widget(w
, &up_list
, &down_list
);
1645 list_for_each_entry(w
, &card
->widgets
, list
) {
1647 case snd_soc_dapm_pre
:
1648 case snd_soc_dapm_post
:
1649 /* These widgets always need to be powered */
1652 list_del_init(&w
->dirty
);
1659 /* Supplies and micbiases only bring the
1660 * context up to STANDBY as unless something
1661 * else is active and passing audio they
1662 * generally don't require full power. Signal
1663 * generators are virtual pins and have no
1664 * power impact themselves.
1667 case snd_soc_dapm_siggen
:
1669 case snd_soc_dapm_supply
:
1670 case snd_soc_dapm_regulator_supply
:
1671 case snd_soc_dapm_clock_supply
:
1672 case snd_soc_dapm_micbias
:
1673 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1674 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1677 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1684 /* Force all contexts in the card to the same bias state if
1685 * they're not ground referenced.
1687 bias
= SND_SOC_BIAS_OFF
;
1688 list_for_each_entry(d
, &card
->dapm_list
, list
)
1689 if (d
->target_bias_level
> bias
)
1690 bias
= d
->target_bias_level
;
1691 list_for_each_entry(d
, &card
->dapm_list
, list
)
1692 if (!d
->idle_bias_off
)
1693 d
->target_bias_level
= bias
;
1695 trace_snd_soc_dapm_walk_done(card
);
1697 /* Run all the bias changes in parallel */
1698 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1699 async_schedule_domain(dapm_pre_sequence_async
, d
,
1701 async_synchronize_full_domain(&async_domain
);
1703 /* Power down widgets first; try to avoid amplifying pops. */
1704 dapm_seq_run(dapm
, &down_list
, event
, false);
1706 dapm_widget_update(dapm
);
1709 dapm_seq_run(dapm
, &up_list
, event
, true);
1711 /* Run all the bias changes in parallel */
1712 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1713 async_schedule_domain(dapm_post_sequence_async
, d
,
1715 async_synchronize_full_domain(&async_domain
);
1717 /* do we need to notify any clients that DAPM event is complete */
1718 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1719 if (d
->stream_event
)
1720 d
->stream_event(d
, event
);
1723 pop_dbg(dapm
->dev
, card
->pop_time
,
1724 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1725 pop_wait(card
->pop_time
);
1727 trace_snd_soc_dapm_done(card
);
1732 #ifdef CONFIG_DEBUG_FS
1733 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1734 char __user
*user_buf
,
1735 size_t count
, loff_t
*ppos
)
1737 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1741 struct snd_soc_dapm_path
*p
= NULL
;
1743 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1747 in
= is_connected_input_ep(w
, NULL
);
1748 dapm_clear_walk(w
->dapm
);
1749 out
= is_connected_output_ep(w
, NULL
);
1750 dapm_clear_walk(w
->dapm
);
1752 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1753 w
->name
, w
->power
? "On" : "Off",
1754 w
->force
? " (forced)" : "", in
, out
);
1757 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1758 " - R%d(0x%x) bit %d",
1759 w
->reg
, w
->reg
, w
->shift
);
1761 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1764 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1766 w
->active
? "active" : "inactive");
1768 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1769 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1773 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1774 " in \"%s\" \"%s\"\n",
1775 p
->name
? p
->name
: "static",
1778 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1779 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1783 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1784 " out \"%s\" \"%s\"\n",
1785 p
->name
? p
->name
: "static",
1789 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1795 static const struct file_operations dapm_widget_power_fops
= {
1796 .open
= simple_open
,
1797 .read
= dapm_widget_power_read_file
,
1798 .llseek
= default_llseek
,
1801 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1802 size_t count
, loff_t
*ppos
)
1804 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1807 switch (dapm
->bias_level
) {
1808 case SND_SOC_BIAS_ON
:
1811 case SND_SOC_BIAS_PREPARE
:
1812 level
= "Prepare\n";
1814 case SND_SOC_BIAS_STANDBY
:
1815 level
= "Standby\n";
1817 case SND_SOC_BIAS_OFF
:
1822 level
= "Unknown\n";
1826 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1830 static const struct file_operations dapm_bias_fops
= {
1831 .open
= simple_open
,
1832 .read
= dapm_bias_read_file
,
1833 .llseek
= default_llseek
,
1836 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1837 struct dentry
*parent
)
1841 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
1843 if (!dapm
->debugfs_dapm
) {
1845 "ASoC: Failed to create DAPM debugfs directory\n");
1849 d
= debugfs_create_file("bias_level", 0444,
1850 dapm
->debugfs_dapm
, dapm
,
1854 "ASoC: Failed to create bias level debugfs file\n");
1857 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1859 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1862 if (!dapm
->debugfs_dapm
|| !w
->name
)
1865 d
= debugfs_create_file(w
->name
, 0444,
1866 dapm
->debugfs_dapm
, w
,
1867 &dapm_widget_power_fops
);
1869 dev_warn(w
->dapm
->dev
,
1870 "ASoC: Failed to create %s debugfs file\n",
1874 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1876 debugfs_remove_recursive(dapm
->debugfs_dapm
);
1880 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1881 struct dentry
*parent
)
1885 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1889 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1895 /* test and update the power status of a mux widget */
1896 static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1897 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
1899 struct snd_soc_dapm_path
*path
;
1902 if (widget
->id
!= snd_soc_dapm_mux
&&
1903 widget
->id
!= snd_soc_dapm_virt_mux
&&
1904 widget
->id
!= snd_soc_dapm_value_mux
)
1907 /* find dapm widget path assoc with kcontrol */
1908 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1909 if (path
->kcontrol
!= kcontrol
)
1912 if (!path
->name
|| !e
->texts
[mux
])
1916 /* we now need to match the string in the enum to the path */
1917 if (!(strcmp(path
->name
, e
->texts
[mux
]))) {
1918 path
->connect
= 1; /* new connection */
1919 dapm_mark_dirty(path
->source
, "mux connection");
1922 dapm_mark_dirty(path
->source
,
1923 "mux disconnection");
1924 path
->connect
= 0; /* old connection must be powered down */
1929 dapm_mark_dirty(widget
, "mux change");
1930 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1936 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1937 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
1939 struct snd_soc_card
*card
= widget
->dapm
->card
;
1942 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1943 ret
= soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
1944 mutex_unlock(&card
->dapm_mutex
);
1946 soc_dpcm_runtime_update(widget
);
1949 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
1951 /* test and update the power status of a mixer or switch widget */
1952 static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1953 struct snd_kcontrol
*kcontrol
, int connect
)
1955 struct snd_soc_dapm_path
*path
;
1958 if (widget
->id
!= snd_soc_dapm_mixer
&&
1959 widget
->id
!= snd_soc_dapm_mixer_named_ctl
&&
1960 widget
->id
!= snd_soc_dapm_switch
)
1963 /* find dapm widget path assoc with kcontrol */
1964 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1965 if (path
->kcontrol
!= kcontrol
)
1968 /* found, now check type */
1970 path
->connect
= connect
;
1971 dapm_mark_dirty(path
->source
, "mixer connection");
1975 dapm_mark_dirty(widget
, "mixer update");
1976 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1982 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1983 struct snd_kcontrol
*kcontrol
, int connect
)
1985 struct snd_soc_card
*card
= widget
->dapm
->card
;
1988 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1989 ret
= soc_dapm_mixer_update_power(widget
, kcontrol
, connect
);
1990 mutex_unlock(&card
->dapm_mutex
);
1992 soc_dpcm_runtime_update(widget
);
1995 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
1997 /* show dapm widget status in sys fs */
1998 static ssize_t
dapm_widget_show(struct device
*dev
,
1999 struct device_attribute
*attr
, char *buf
)
2001 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2002 struct snd_soc_codec
*codec
=rtd
->codec
;
2003 struct snd_soc_dapm_widget
*w
;
2005 char *state
= "not set";
2007 list_for_each_entry(w
, &codec
->card
->widgets
, list
) {
2008 if (w
->dapm
!= &codec
->dapm
)
2011 /* only display widgets that burnm power */
2013 case snd_soc_dapm_hp
:
2014 case snd_soc_dapm_mic
:
2015 case snd_soc_dapm_spk
:
2016 case snd_soc_dapm_line
:
2017 case snd_soc_dapm_micbias
:
2018 case snd_soc_dapm_dac
:
2019 case snd_soc_dapm_adc
:
2020 case snd_soc_dapm_pga
:
2021 case snd_soc_dapm_out_drv
:
2022 case snd_soc_dapm_mixer
:
2023 case snd_soc_dapm_mixer_named_ctl
:
2024 case snd_soc_dapm_supply
:
2025 case snd_soc_dapm_regulator_supply
:
2026 case snd_soc_dapm_clock_supply
:
2028 count
+= sprintf(buf
+ count
, "%s: %s\n",
2029 w
->name
, w
->power
? "On":"Off");
2036 switch (codec
->dapm
.bias_level
) {
2037 case SND_SOC_BIAS_ON
:
2040 case SND_SOC_BIAS_PREPARE
:
2043 case SND_SOC_BIAS_STANDBY
:
2046 case SND_SOC_BIAS_OFF
:
2050 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2055 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2057 int snd_soc_dapm_sys_add(struct device
*dev
)
2059 return device_create_file(dev
, &dev_attr_dapm_widget
);
2062 static void snd_soc_dapm_sys_remove(struct device
*dev
)
2064 device_remove_file(dev
, &dev_attr_dapm_widget
);
2067 /* free all dapm widgets and resources */
2068 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2070 struct snd_soc_dapm_widget
*w
, *next_w
;
2071 struct snd_soc_dapm_path
*p
, *next_p
;
2073 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2074 if (w
->dapm
!= dapm
)
2078 * remove source and sink paths associated to this widget.
2079 * While removing the path, remove reference to it from both
2080 * source and sink widgets so that path is removed only once.
2082 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
) {
2083 list_del(&p
->list_sink
);
2084 list_del(&p
->list_source
);
2086 kfree(p
->long_name
);
2089 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
) {
2090 list_del(&p
->list_sink
);
2091 list_del(&p
->list_source
);
2093 kfree(p
->long_name
);
2096 kfree(w
->kcontrols
);
2102 static struct snd_soc_dapm_widget
*dapm_find_widget(
2103 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2104 bool search_other_contexts
)
2106 struct snd_soc_dapm_widget
*w
;
2107 struct snd_soc_dapm_widget
*fallback
= NULL
;
2109 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2110 if (!strcmp(w
->name
, pin
)) {
2111 if (w
->dapm
== dapm
)
2118 if (search_other_contexts
)
2124 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2125 const char *pin
, int status
)
2127 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2130 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2134 if (w
->connected
!= status
)
2135 dapm_mark_dirty(w
, "pin configuration");
2137 w
->connected
= status
;
2145 * snd_soc_dapm_sync - scan and power dapm paths
2146 * @dapm: DAPM context
2148 * Walks all dapm audio paths and powers widgets according to their
2149 * stream or path usage.
2151 * Returns 0 for success.
2153 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2158 * Suppress early reports (eg, jacks syncing their state) to avoid
2159 * silly DAPM runs during card startup.
2161 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2164 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2165 ret
= dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2166 mutex_unlock(&dapm
->card
->dapm_mutex
);
2169 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2171 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2172 const struct snd_soc_dapm_route
*route
)
2174 struct snd_soc_dapm_path
*path
;
2175 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2176 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2178 const char *control
= route
->control
;
2180 char prefixed_sink
[80];
2181 char prefixed_source
[80];
2184 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2185 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2186 dapm
->codec
->name_prefix
, route
->sink
);
2187 sink
= prefixed_sink
;
2188 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2189 dapm
->codec
->name_prefix
, route
->source
);
2190 source
= prefixed_source
;
2193 source
= route
->source
;
2197 * find src and dest widgets over all widgets but favor a widget from
2198 * current DAPM context
2200 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2201 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2203 if (w
->dapm
== dapm
)
2207 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2209 if (w
->dapm
== dapm
)
2213 /* use widget from another DAPM context if not found from this */
2219 if (wsource
== NULL
) {
2220 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2224 if (wsink
== NULL
) {
2225 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2230 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2234 path
->source
= wsource
;
2236 path
->connected
= route
->connected
;
2237 INIT_LIST_HEAD(&path
->list
);
2238 INIT_LIST_HEAD(&path
->list_source
);
2239 INIT_LIST_HEAD(&path
->list_sink
);
2241 /* check for external widgets */
2242 if (wsink
->id
== snd_soc_dapm_input
) {
2243 if (wsource
->id
== snd_soc_dapm_micbias
||
2244 wsource
->id
== snd_soc_dapm_mic
||
2245 wsource
->id
== snd_soc_dapm_line
||
2246 wsource
->id
== snd_soc_dapm_output
)
2249 if (wsource
->id
== snd_soc_dapm_output
) {
2250 if (wsink
->id
== snd_soc_dapm_spk
||
2251 wsink
->id
== snd_soc_dapm_hp
||
2252 wsink
->id
== snd_soc_dapm_line
||
2253 wsink
->id
== snd_soc_dapm_input
)
2257 /* connect static paths */
2258 if (control
== NULL
) {
2259 list_add(&path
->list
, &dapm
->card
->paths
);
2260 list_add(&path
->list_sink
, &wsink
->sources
);
2261 list_add(&path
->list_source
, &wsource
->sinks
);
2266 /* connect dynamic paths */
2267 switch (wsink
->id
) {
2268 case snd_soc_dapm_adc
:
2269 case snd_soc_dapm_dac
:
2270 case snd_soc_dapm_pga
:
2271 case snd_soc_dapm_out_drv
:
2272 case snd_soc_dapm_input
:
2273 case snd_soc_dapm_output
:
2274 case snd_soc_dapm_siggen
:
2275 case snd_soc_dapm_micbias
:
2276 case snd_soc_dapm_vmid
:
2277 case snd_soc_dapm_pre
:
2278 case snd_soc_dapm_post
:
2279 case snd_soc_dapm_supply
:
2280 case snd_soc_dapm_regulator_supply
:
2281 case snd_soc_dapm_clock_supply
:
2282 case snd_soc_dapm_aif_in
:
2283 case snd_soc_dapm_aif_out
:
2284 case snd_soc_dapm_dai
:
2285 case snd_soc_dapm_dai_link
:
2286 list_add(&path
->list
, &dapm
->card
->paths
);
2287 list_add(&path
->list_sink
, &wsink
->sources
);
2288 list_add(&path
->list_source
, &wsource
->sinks
);
2291 case snd_soc_dapm_mux
:
2292 case snd_soc_dapm_virt_mux
:
2293 case snd_soc_dapm_value_mux
:
2294 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
2295 &wsink
->kcontrol_news
[0]);
2299 case snd_soc_dapm_switch
:
2300 case snd_soc_dapm_mixer
:
2301 case snd_soc_dapm_mixer_named_ctl
:
2302 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
2306 case snd_soc_dapm_hp
:
2307 case snd_soc_dapm_mic
:
2308 case snd_soc_dapm_line
:
2309 case snd_soc_dapm_spk
:
2310 list_add(&path
->list
, &dapm
->card
->paths
);
2311 list_add(&path
->list_sink
, &wsink
->sources
);
2312 list_add(&path
->list_source
, &wsource
->sinks
);
2317 dapm_mark_dirty(wsource
, "Route added");
2318 dapm_mark_dirty(wsink
, "Route added");
2323 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2324 source
, control
, sink
);
2329 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2330 const struct snd_soc_dapm_route
*route
)
2332 struct snd_soc_dapm_path
*path
, *p
;
2335 char prefixed_sink
[80];
2336 char prefixed_source
[80];
2338 if (route
->control
) {
2340 "ASoC: Removal of routes with controls not supported\n");
2344 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2345 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2346 dapm
->codec
->name_prefix
, route
->sink
);
2347 sink
= prefixed_sink
;
2348 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2349 dapm
->codec
->name_prefix
, route
->source
);
2350 source
= prefixed_source
;
2353 source
= route
->source
;
2357 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2358 if (strcmp(p
->source
->name
, source
) != 0)
2360 if (strcmp(p
->sink
->name
, sink
) != 0)
2367 dapm_mark_dirty(path
->source
, "Route removed");
2368 dapm_mark_dirty(path
->sink
, "Route removed");
2370 list_del(&path
->list
);
2371 list_del(&path
->list_sink
);
2372 list_del(&path
->list_source
);
2375 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
2383 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2384 * @dapm: DAPM context
2385 * @route: audio routes
2386 * @num: number of routes
2388 * Connects 2 dapm widgets together via a named audio path. The sink is
2389 * the widget receiving the audio signal, whilst the source is the sender
2390 * of the audio signal.
2392 * Returns 0 for success else error. On error all resources can be freed
2393 * with a call to snd_soc_card_free().
2395 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2396 const struct snd_soc_dapm_route
*route
, int num
)
2400 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2401 for (i
= 0; i
< num
; i
++) {
2402 r
= snd_soc_dapm_add_route(dapm
, route
);
2404 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
2406 route
->control
? route
->control
: "direct",
2412 mutex_unlock(&dapm
->card
->dapm_mutex
);
2416 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2419 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2420 * @dapm: DAPM context
2421 * @route: audio routes
2422 * @num: number of routes
2424 * Removes routes from the DAPM context.
2426 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2427 const struct snd_soc_dapm_route
*route
, int num
)
2431 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2432 for (i
= 0; i
< num
; i
++) {
2433 snd_soc_dapm_del_route(dapm
, route
);
2436 mutex_unlock(&dapm
->card
->dapm_mutex
);
2440 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2442 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2443 const struct snd_soc_dapm_route
*route
)
2445 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2448 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2451 struct snd_soc_dapm_path
*path
;
2455 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
2461 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
2466 if (route
->control
|| route
->connected
)
2467 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
2468 route
->source
, route
->sink
);
2470 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2471 if (path
->sink
== sink
) {
2478 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
2479 route
->source
, route
->sink
);
2481 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
2482 count
, route
->source
, route
->sink
);
2488 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2489 * @dapm: DAPM context
2490 * @route: audio routes
2491 * @num: number of routes
2493 * Mark existing routes matching those specified in the passed array
2494 * as being weak, meaning that they are ignored for the purpose of
2495 * power decisions. The main intended use case is for sidetone paths
2496 * which couple audio between other independent paths if they are both
2497 * active in order to make the combination work better at the user
2498 * level but which aren't intended to be "used".
2500 * Note that CODEC drivers should not use this as sidetone type paths
2501 * can frequently also be used as bypass paths.
2503 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2504 const struct snd_soc_dapm_route
*route
, int num
)
2509 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2510 for (i
= 0; i
< num
; i
++) {
2511 err
= snd_soc_dapm_weak_route(dapm
, route
);
2516 mutex_unlock(&dapm
->card
->dapm_mutex
);
2520 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2523 * snd_soc_dapm_new_widgets - add new dapm widgets
2524 * @dapm: DAPM context
2526 * Checks the codec for any new dapm widgets and creates them if found.
2528 * Returns 0 for success.
2530 int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context
*dapm
)
2532 struct snd_soc_dapm_widget
*w
;
2535 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2537 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2542 if (w
->num_kcontrols
) {
2543 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2544 sizeof(struct snd_kcontrol
*),
2546 if (!w
->kcontrols
) {
2547 mutex_unlock(&dapm
->card
->dapm_mutex
);
2553 case snd_soc_dapm_switch
:
2554 case snd_soc_dapm_mixer
:
2555 case snd_soc_dapm_mixer_named_ctl
:
2558 case snd_soc_dapm_mux
:
2559 case snd_soc_dapm_virt_mux
:
2560 case snd_soc_dapm_value_mux
:
2563 case snd_soc_dapm_pga
:
2564 case snd_soc_dapm_out_drv
:
2571 /* Read the initial power state from the device */
2573 val
= soc_widget_read(w
, w
->reg
);
2574 val
&= 1 << w
->shift
;
2584 dapm_mark_dirty(w
, "new widget");
2585 dapm_debugfs_add_widget(w
);
2588 dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2589 mutex_unlock(&dapm
->card
->dapm_mutex
);
2592 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2595 * snd_soc_dapm_get_volsw - dapm mixer get callback
2596 * @kcontrol: mixer control
2597 * @ucontrol: control element information
2599 * Callback to get the value of a dapm mixer control.
2601 * Returns 0 for success.
2603 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2604 struct snd_ctl_elem_value
*ucontrol
)
2606 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2607 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2608 struct soc_mixer_control
*mc
=
2609 (struct soc_mixer_control
*)kcontrol
->private_value
;
2610 unsigned int reg
= mc
->reg
;
2611 unsigned int shift
= mc
->shift
;
2613 unsigned int mask
= (1 << fls(max
)) - 1;
2614 unsigned int invert
= mc
->invert
;
2616 if (snd_soc_volsw_is_stereo(mc
))
2617 dev_warn(widget
->dapm
->dev
,
2618 "ASoC: Control '%s' is stereo, which is not supported\n",
2621 ucontrol
->value
.integer
.value
[0] =
2622 (snd_soc_read(widget
->codec
, reg
) >> shift
) & mask
;
2624 ucontrol
->value
.integer
.value
[0] =
2625 max
- ucontrol
->value
.integer
.value
[0];
2629 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2632 * snd_soc_dapm_put_volsw - dapm mixer set callback
2633 * @kcontrol: mixer control
2634 * @ucontrol: control element information
2636 * Callback to set the value of a dapm mixer control.
2638 * Returns 0 for success.
2640 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
2641 struct snd_ctl_elem_value
*ucontrol
)
2643 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2644 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2645 struct snd_soc_codec
*codec
= widget
->codec
;
2646 struct snd_soc_card
*card
= codec
->card
;
2647 struct soc_mixer_control
*mc
=
2648 (struct soc_mixer_control
*)kcontrol
->private_value
;
2649 unsigned int reg
= mc
->reg
;
2650 unsigned int shift
= mc
->shift
;
2652 unsigned int mask
= (1 << fls(max
)) - 1;
2653 unsigned int invert
= mc
->invert
;
2655 int connect
, change
;
2656 struct snd_soc_dapm_update update
;
2659 if (snd_soc_volsw_is_stereo(mc
))
2660 dev_warn(widget
->dapm
->dev
,
2661 "ASoC: Control '%s' is stereo, which is not supported\n",
2664 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2669 mask
= mask
<< shift
;
2672 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2674 change
= snd_soc_test_bits(widget
->codec
, reg
, mask
, val
);
2676 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2677 widget
= wlist
->widgets
[wi
];
2679 widget
->value
= val
;
2681 update
.kcontrol
= kcontrol
;
2682 update
.widget
= widget
;
2686 widget
->dapm
->update
= &update
;
2688 soc_dapm_mixer_update_power(widget
, kcontrol
, connect
);
2690 widget
->dapm
->update
= NULL
;
2694 mutex_unlock(&card
->dapm_mutex
);
2697 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
2700 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2701 * @kcontrol: mixer control
2702 * @ucontrol: control element information
2704 * Callback to get the value of a dapm enumerated double mixer control.
2706 * Returns 0 for success.
2708 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2709 struct snd_ctl_elem_value
*ucontrol
)
2711 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2712 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2713 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2716 val
= snd_soc_read(widget
->codec
, e
->reg
);
2717 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & e
->mask
;
2718 if (e
->shift_l
!= e
->shift_r
)
2719 ucontrol
->value
.enumerated
.item
[1] =
2720 (val
>> e
->shift_r
) & e
->mask
;
2724 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2727 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2728 * @kcontrol: mixer control
2729 * @ucontrol: control element information
2731 * Callback to set the value of a dapm enumerated double mixer control.
2733 * Returns 0 for success.
2735 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2736 struct snd_ctl_elem_value
*ucontrol
)
2738 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2739 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2740 struct snd_soc_codec
*codec
= widget
->codec
;
2741 struct snd_soc_card
*card
= codec
->card
;
2742 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2743 unsigned int val
, mux
, change
;
2745 struct snd_soc_dapm_update update
;
2748 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2750 mux
= ucontrol
->value
.enumerated
.item
[0];
2751 val
= mux
<< e
->shift_l
;
2752 mask
= e
->mask
<< e
->shift_l
;
2753 if (e
->shift_l
!= e
->shift_r
) {
2754 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2756 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2757 mask
|= e
->mask
<< e
->shift_r
;
2760 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2762 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2764 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2765 widget
= wlist
->widgets
[wi
];
2767 widget
->value
= val
;
2769 update
.kcontrol
= kcontrol
;
2770 update
.widget
= widget
;
2771 update
.reg
= e
->reg
;
2774 widget
->dapm
->update
= &update
;
2776 soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
2778 widget
->dapm
->update
= NULL
;
2782 mutex_unlock(&card
->dapm_mutex
);
2785 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2788 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2789 * @kcontrol: mixer control
2790 * @ucontrol: control element information
2792 * Returns 0 for success.
2794 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
2795 struct snd_ctl_elem_value
*ucontrol
)
2797 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2798 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2800 ucontrol
->value
.enumerated
.item
[0] = widget
->value
;
2804 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
2807 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2808 * @kcontrol: mixer control
2809 * @ucontrol: control element information
2811 * Returns 0 for success.
2813 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
2814 struct snd_ctl_elem_value
*ucontrol
)
2816 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2817 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2818 struct snd_soc_codec
*codec
= widget
->codec
;
2819 struct snd_soc_card
*card
= codec
->card
;
2820 struct soc_enum
*e
=
2821 (struct soc_enum
*)kcontrol
->private_value
;
2826 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
2829 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2831 change
= widget
->value
!= ucontrol
->value
.enumerated
.item
[0];
2833 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2834 widget
= wlist
->widgets
[wi
];
2836 widget
->value
= ucontrol
->value
.enumerated
.item
[0];
2838 soc_dapm_mux_update_power(widget
, kcontrol
, widget
->value
, e
);
2842 mutex_unlock(&card
->dapm_mutex
);
2845 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
2848 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2850 * @kcontrol: mixer control
2851 * @ucontrol: control element information
2853 * Callback to get the value of a dapm semi enumerated double mixer control.
2855 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2856 * used for handling bitfield coded enumeration for example.
2858 * Returns 0 for success.
2860 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2861 struct snd_ctl_elem_value
*ucontrol
)
2863 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2864 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2865 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2866 unsigned int reg_val
, val
, mux
;
2868 reg_val
= snd_soc_read(widget
->codec
, e
->reg
);
2869 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2870 for (mux
= 0; mux
< e
->max
; mux
++) {
2871 if (val
== e
->values
[mux
])
2874 ucontrol
->value
.enumerated
.item
[0] = mux
;
2875 if (e
->shift_l
!= e
->shift_r
) {
2876 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2877 for (mux
= 0; mux
< e
->max
; mux
++) {
2878 if (val
== e
->values
[mux
])
2881 ucontrol
->value
.enumerated
.item
[1] = mux
;
2886 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
2889 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2891 * @kcontrol: mixer control
2892 * @ucontrol: control element information
2894 * Callback to set the value of a dapm semi enumerated double mixer control.
2896 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2897 * used for handling bitfield coded enumeration for example.
2899 * Returns 0 for success.
2901 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2902 struct snd_ctl_elem_value
*ucontrol
)
2904 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2905 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2906 struct snd_soc_codec
*codec
= widget
->codec
;
2907 struct snd_soc_card
*card
= codec
->card
;
2908 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2909 unsigned int val
, mux
, change
;
2911 struct snd_soc_dapm_update update
;
2914 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2916 mux
= ucontrol
->value
.enumerated
.item
[0];
2917 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2918 mask
= e
->mask
<< e
->shift_l
;
2919 if (e
->shift_l
!= e
->shift_r
) {
2920 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2922 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2923 mask
|= e
->mask
<< e
->shift_r
;
2926 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2928 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2930 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2931 widget
= wlist
->widgets
[wi
];
2933 widget
->value
= val
;
2935 update
.kcontrol
= kcontrol
;
2936 update
.widget
= widget
;
2937 update
.reg
= e
->reg
;
2940 widget
->dapm
->update
= &update
;
2942 soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
2944 widget
->dapm
->update
= NULL
;
2948 mutex_unlock(&card
->dapm_mutex
);
2951 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
2954 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2956 * @kcontrol: mixer control
2957 * @uinfo: control element information
2959 * Callback to provide information about a pin switch control.
2961 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
2962 struct snd_ctl_elem_info
*uinfo
)
2964 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2966 uinfo
->value
.integer
.min
= 0;
2967 uinfo
->value
.integer
.max
= 1;
2971 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
2974 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2976 * @kcontrol: mixer control
2979 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
2980 struct snd_ctl_elem_value
*ucontrol
)
2982 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
2983 const char *pin
= (const char *)kcontrol
->private_value
;
2985 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2987 ucontrol
->value
.integer
.value
[0] =
2988 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
2990 mutex_unlock(&card
->dapm_mutex
);
2994 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
2997 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
2999 * @kcontrol: mixer control
3002 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3003 struct snd_ctl_elem_value
*ucontrol
)
3005 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3006 const char *pin
= (const char *)kcontrol
->private_value
;
3008 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3010 if (ucontrol
->value
.integer
.value
[0])
3011 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3013 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3015 mutex_unlock(&card
->dapm_mutex
);
3017 snd_soc_dapm_sync(&card
->dapm
);
3020 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3022 static struct snd_soc_dapm_widget
*
3023 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3024 const struct snd_soc_dapm_widget
*widget
)
3026 struct snd_soc_dapm_widget
*w
;
3030 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3034 case snd_soc_dapm_regulator_supply
:
3035 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3036 if (IS_ERR(w
->regulator
)) {
3037 ret
= PTR_ERR(w
->regulator
);
3038 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3043 if (w
->invert
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3044 ret
= regulator_allow_bypass(w
->regulator
, true);
3046 dev_warn(w
->dapm
->dev
,
3047 "ASoC: Failed to unbypass %s: %d\n",
3051 case snd_soc_dapm_clock_supply
:
3052 #ifdef CONFIG_CLKDEV_LOOKUP
3053 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3054 if (IS_ERR(w
->clk
)) {
3055 ret
= PTR_ERR(w
->clk
);
3056 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3068 name_len
= strlen(widget
->name
) + 1;
3069 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
3070 name_len
+= 1 + strlen(dapm
->codec
->name_prefix
);
3071 w
->name
= kmalloc(name_len
, GFP_KERNEL
);
3072 if (w
->name
== NULL
) {
3076 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
3077 snprintf((char *)w
->name
, name_len
, "%s %s",
3078 dapm
->codec
->name_prefix
, widget
->name
);
3080 snprintf((char *)w
->name
, name_len
, "%s", widget
->name
);
3083 case snd_soc_dapm_switch
:
3084 case snd_soc_dapm_mixer
:
3085 case snd_soc_dapm_mixer_named_ctl
:
3086 w
->power_check
= dapm_generic_check_power
;
3088 case snd_soc_dapm_mux
:
3089 case snd_soc_dapm_virt_mux
:
3090 case snd_soc_dapm_value_mux
:
3091 w
->power_check
= dapm_generic_check_power
;
3093 case snd_soc_dapm_adc
:
3094 case snd_soc_dapm_aif_out
:
3095 w
->power_check
= dapm_adc_check_power
;
3097 case snd_soc_dapm_dac
:
3098 case snd_soc_dapm_aif_in
:
3099 w
->power_check
= dapm_dac_check_power
;
3101 case snd_soc_dapm_pga
:
3102 case snd_soc_dapm_out_drv
:
3103 case snd_soc_dapm_input
:
3104 case snd_soc_dapm_output
:
3105 case snd_soc_dapm_micbias
:
3106 case snd_soc_dapm_spk
:
3107 case snd_soc_dapm_hp
:
3108 case snd_soc_dapm_mic
:
3109 case snd_soc_dapm_line
:
3110 case snd_soc_dapm_dai_link
:
3111 w
->power_check
= dapm_generic_check_power
;
3113 case snd_soc_dapm_supply
:
3114 case snd_soc_dapm_regulator_supply
:
3115 case snd_soc_dapm_clock_supply
:
3116 w
->power_check
= dapm_supply_check_power
;
3118 case snd_soc_dapm_dai
:
3119 w
->power_check
= dapm_dai_check_power
;
3122 w
->power_check
= dapm_always_on_check_power
;
3128 w
->codec
= dapm
->codec
;
3129 w
->platform
= dapm
->platform
;
3130 INIT_LIST_HEAD(&w
->sources
);
3131 INIT_LIST_HEAD(&w
->sinks
);
3132 INIT_LIST_HEAD(&w
->list
);
3133 INIT_LIST_HEAD(&w
->dirty
);
3134 list_add(&w
->list
, &dapm
->card
->widgets
);
3136 /* machine layer set ups unconnected pins and insertions */
3142 * snd_soc_dapm_new_controls - create new dapm controls
3143 * @dapm: DAPM context
3144 * @widget: widget array
3145 * @num: number of widgets
3147 * Creates new DAPM controls based upon the templates.
3149 * Returns 0 for success else error.
3151 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3152 const struct snd_soc_dapm_widget
*widget
,
3155 struct snd_soc_dapm_widget
*w
;
3159 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3160 for (i
= 0; i
< num
; i
++) {
3161 w
= snd_soc_dapm_new_control(dapm
, widget
);
3164 "ASoC: Failed to create DAPM control %s\n",
3171 mutex_unlock(&dapm
->card
->dapm_mutex
);
3174 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3176 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3177 struct snd_kcontrol
*kcontrol
, int event
)
3179 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3180 struct snd_soc_dai
*source
, *sink
;
3181 const struct snd_soc_pcm_stream
*config
= w
->params
;
3182 struct snd_pcm_substream substream
;
3183 struct snd_pcm_hw_params
*params
= NULL
;
3188 BUG_ON(list_empty(&w
->sources
) || list_empty(&w
->sinks
));
3190 /* We only support a single source and sink, pick the first */
3191 source_p
= list_first_entry(&w
->sources
, struct snd_soc_dapm_path
,
3193 sink_p
= list_first_entry(&w
->sinks
, struct snd_soc_dapm_path
,
3196 BUG_ON(!source_p
|| !sink_p
);
3197 BUG_ON(!sink_p
->source
|| !source_p
->sink
);
3198 BUG_ON(!source_p
->source
|| !sink_p
->sink
);
3200 source
= source_p
->source
->priv
;
3201 sink
= sink_p
->sink
->priv
;
3203 /* Be a little careful as we don't want to overflow the mask array */
3204 if (config
->formats
) {
3205 fmt
= ffs(config
->formats
) - 1;
3207 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3212 /* Currently very limited parameter selection */
3213 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3218 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3220 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3222 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3225 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3226 = config
->channels_min
;
3227 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3228 = config
->channels_max
;
3230 memset(&substream
, 0, sizeof(substream
));
3233 case SND_SOC_DAPM_PRE_PMU
:
3234 if (source
->driver
->ops
&& source
->driver
->ops
->hw_params
) {
3235 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3236 ret
= source
->driver
->ops
->hw_params(&substream
,
3239 dev_err(source
->dev
,
3240 "ASoC: hw_params() failed: %d\n", ret
);
3245 if (sink
->driver
->ops
&& sink
->driver
->ops
->hw_params
) {
3246 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3247 ret
= sink
->driver
->ops
->hw_params(&substream
, params
,
3251 "ASoC: hw_params() failed: %d\n", ret
);
3257 case SND_SOC_DAPM_POST_PMU
:
3258 ret
= snd_soc_dai_digital_mute(sink
, 0,
3259 SNDRV_PCM_STREAM_PLAYBACK
);
3260 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3261 dev_warn(sink
->dev
, "ASoC: Failed to unmute: %d\n", ret
);
3265 case SND_SOC_DAPM_PRE_PMD
:
3266 ret
= snd_soc_dai_digital_mute(sink
, 1,
3267 SNDRV_PCM_STREAM_PLAYBACK
);
3268 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3269 dev_warn(sink
->dev
, "ASoC: Failed to mute: %d\n", ret
);
3283 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3284 const struct snd_soc_pcm_stream
*params
,
3285 struct snd_soc_dapm_widget
*source
,
3286 struct snd_soc_dapm_widget
*sink
)
3288 struct snd_soc_dapm_route routes
[2];
3289 struct snd_soc_dapm_widget
template;
3290 struct snd_soc_dapm_widget
*w
;
3294 len
= strlen(source
->name
) + strlen(sink
->name
) + 2;
3295 link_name
= devm_kzalloc(card
->dev
, len
, GFP_KERNEL
);
3298 snprintf(link_name
, len
, "%s-%s", source
->name
, sink
->name
);
3300 memset(&template, 0, sizeof(template));
3301 template.reg
= SND_SOC_NOPM
;
3302 template.id
= snd_soc_dapm_dai_link
;
3303 template.name
= link_name
;
3304 template.event
= snd_soc_dai_link_event
;
3305 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3306 SND_SOC_DAPM_PRE_PMD
;
3308 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
3310 w
= snd_soc_dapm_new_control(&card
->dapm
, &template);
3312 dev_err(card
->dev
, "ASoC: Failed to create %s widget\n",
3319 memset(&routes
, 0, sizeof(routes
));
3321 routes
[0].source
= source
->name
;
3322 routes
[0].sink
= link_name
;
3323 routes
[1].source
= link_name
;
3324 routes
[1].sink
= sink
->name
;
3326 return snd_soc_dapm_add_routes(&card
->dapm
, routes
,
3327 ARRAY_SIZE(routes
));
3330 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3331 struct snd_soc_dai
*dai
)
3333 struct snd_soc_dapm_widget
template;
3334 struct snd_soc_dapm_widget
*w
;
3336 WARN_ON(dapm
->dev
!= dai
->dev
);
3338 memset(&template, 0, sizeof(template));
3339 template.reg
= SND_SOC_NOPM
;
3341 if (dai
->driver
->playback
.stream_name
) {
3342 template.id
= snd_soc_dapm_dai
;
3343 template.name
= dai
->driver
->playback
.stream_name
;
3344 template.sname
= dai
->driver
->playback
.stream_name
;
3346 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3349 w
= snd_soc_dapm_new_control(dapm
, &template);
3351 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3352 dai
->driver
->playback
.stream_name
);
3356 dai
->playback_widget
= w
;
3359 if (dai
->driver
->capture
.stream_name
) {
3360 template.id
= snd_soc_dapm_dai
;
3361 template.name
= dai
->driver
->capture
.stream_name
;
3362 template.sname
= dai
->driver
->capture
.stream_name
;
3364 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3367 w
= snd_soc_dapm_new_control(dapm
, &template);
3369 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3370 dai
->driver
->capture
.stream_name
);
3374 dai
->capture_widget
= w
;
3380 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3382 struct snd_soc_dapm_widget
*dai_w
, *w
;
3383 struct snd_soc_dai
*dai
;
3384 struct snd_soc_dapm_route r
;
3386 memset(&r
, 0, sizeof(r
));
3388 /* For each DAI widget... */
3389 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3390 if (dai_w
->id
!= snd_soc_dapm_dai
)
3395 /* ...find all widgets with the same stream and link them */
3396 list_for_each_entry(w
, &card
->widgets
, list
) {
3397 if (w
->dapm
!= dai_w
->dapm
)
3400 if (w
->id
== snd_soc_dapm_dai
)
3406 if (dai
->driver
->playback
.stream_name
&&
3408 dai
->driver
->playback
.stream_name
)) {
3409 r
.source
= dai
->playback_widget
->name
;
3411 dev_dbg(dai
->dev
, "%s -> %s\n",
3414 snd_soc_dapm_add_route(w
->dapm
, &r
);
3417 if (dai
->driver
->capture
.stream_name
&&
3419 dai
->driver
->capture
.stream_name
)) {
3421 r
.sink
= dai
->capture_widget
->name
;
3422 dev_dbg(dai
->dev
, "%s -> %s\n",
3425 snd_soc_dapm_add_route(w
->dapm
, &r
);
3433 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3437 struct snd_soc_dapm_widget
*w_cpu
, *w_codec
;
3438 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3439 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
3441 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
3442 w_cpu
= cpu_dai
->playback_widget
;
3443 w_codec
= codec_dai
->playback_widget
;
3445 w_cpu
= cpu_dai
->capture_widget
;
3446 w_codec
= codec_dai
->capture_widget
;
3451 dapm_mark_dirty(w_cpu
, "stream event");
3454 case SND_SOC_DAPM_STREAM_START
:
3457 case SND_SOC_DAPM_STREAM_STOP
:
3460 case SND_SOC_DAPM_STREAM_SUSPEND
:
3461 case SND_SOC_DAPM_STREAM_RESUME
:
3462 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3463 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3470 dapm_mark_dirty(w_codec
, "stream event");
3473 case SND_SOC_DAPM_STREAM_START
:
3474 w_codec
->active
= 1;
3476 case SND_SOC_DAPM_STREAM_STOP
:
3477 w_codec
->active
= 0;
3479 case SND_SOC_DAPM_STREAM_SUSPEND
:
3480 case SND_SOC_DAPM_STREAM_RESUME
:
3481 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3482 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3487 dapm_power_widgets(&rtd
->card
->dapm
, event
);
3491 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3492 * @rtd: PCM runtime data
3493 * @stream: stream name
3494 * @event: stream event
3496 * Sends a stream event to the dapm core. The core then makes any
3497 * necessary widget power changes.
3499 * Returns 0 for success else error.
3501 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3504 struct snd_soc_card
*card
= rtd
->card
;
3506 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3507 soc_dapm_stream_event(rtd
, stream
, event
);
3508 mutex_unlock(&card
->dapm_mutex
);
3512 * snd_soc_dapm_enable_pin - enable pin.
3513 * @dapm: DAPM context
3516 * Enables input/output pin and its parents or children widgets iff there is
3517 * a valid audio route and active audio stream.
3518 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3519 * do any widget power switching.
3521 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3523 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
3525 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
3528 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3529 * @dapm: DAPM context
3532 * Enables input/output pin regardless of any other state. This is
3533 * intended for use with microphone bias supplies used in microphone
3536 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3537 * do any widget power switching.
3539 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
3542 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3545 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3549 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
3552 dapm_mark_dirty(w
, "force enable");
3556 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
3559 * snd_soc_dapm_disable_pin - disable pin.
3560 * @dapm: DAPM context
3563 * Disables input/output pin and its parents or children widgets.
3564 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3565 * do any widget power switching.
3567 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
3570 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3572 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
3575 * snd_soc_dapm_nc_pin - permanently disable pin.
3576 * @dapm: DAPM context
3579 * Marks the specified pin as being not connected, disabling it along
3580 * any parent or child widgets. At present this is identical to
3581 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3582 * additional things such as disabling controls which only affect
3583 * paths through the pin.
3585 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3586 * do any widget power switching.
3588 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3590 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3592 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
3595 * snd_soc_dapm_get_pin_status - get audio pin status
3596 * @dapm: DAPM context
3597 * @pin: audio signal pin endpoint (or start point)
3599 * Get audio pin status - connected or disconnected.
3601 * Returns 1 for connected otherwise 0.
3603 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
3606 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3609 return w
->connected
;
3613 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
3616 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3617 * @dapm: DAPM context
3618 * @pin: audio signal pin endpoint (or start point)
3620 * Mark the given endpoint or pin as ignoring suspend. When the
3621 * system is disabled a path between two endpoints flagged as ignoring
3622 * suspend will not be disabled. The path must already be enabled via
3623 * normal means at suspend time, it will not be turned on if it was not
3626 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
3629 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
3632 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3636 w
->ignore_suspend
= 1;
3640 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
3642 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card
*card
,
3643 struct snd_soc_dapm_widget
*w
)
3645 struct snd_soc_dapm_path
*p
;
3647 list_for_each_entry(p
, &card
->paths
, list
) {
3648 if ((p
->source
== w
) || (p
->sink
== w
)) {
3650 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3651 p
->source
->name
, p
->source
->id
, p
->source
->dapm
,
3652 p
->sink
->name
, p
->sink
->id
, p
->sink
->dapm
);
3654 /* Connected to something other than the codec */
3655 if (p
->source
->dapm
!= p
->sink
->dapm
)
3658 * Loopback connection from codec external pin to
3659 * codec external pin
3661 if (p
->sink
->id
== snd_soc_dapm_input
) {
3662 switch (p
->source
->id
) {
3663 case snd_soc_dapm_output
:
3664 case snd_soc_dapm_micbias
:
3677 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3678 * @codec: The codec whose pins should be processed
3680 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3681 * which are unused. Pins are used if they are connected externally to the
3682 * codec, whether that be to some other device, or a loop-back connection to
3685 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec
*codec
)
3687 struct snd_soc_card
*card
= codec
->card
;
3688 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
3689 struct snd_soc_dapm_widget
*w
;
3691 dev_dbg(codec
->dev
, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3692 &card
->dapm
, &codec
->dapm
);
3694 list_for_each_entry(w
, &card
->widgets
, list
) {
3695 if (w
->dapm
!= dapm
)
3698 case snd_soc_dapm_input
:
3699 case snd_soc_dapm_output
:
3700 case snd_soc_dapm_micbias
:
3701 dev_dbg(codec
->dev
, "ASoC: Auto NC: Checking widget %s\n",
3703 if (!snd_soc_dapm_widget_in_card_paths(card
, w
)) {
3705 "... Not in map; disabling\n");
3706 snd_soc_dapm_nc_pin(dapm
, w
->name
);
3716 * snd_soc_dapm_free - free dapm resources
3717 * @dapm: DAPM context
3719 * Free all dapm widgets and resources.
3721 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
3723 snd_soc_dapm_sys_remove(dapm
->dev
);
3724 dapm_debugfs_cleanup(dapm
);
3725 dapm_free_widgets(dapm
);
3726 list_del(&dapm
->list
);
3728 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
3730 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context
*dapm
)
3732 struct snd_soc_card
*card
= dapm
->card
;
3733 struct snd_soc_dapm_widget
*w
;
3734 LIST_HEAD(down_list
);
3737 mutex_lock(&card
->dapm_mutex
);
3739 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
3740 if (w
->dapm
!= dapm
)
3743 dapm_seq_insert(w
, &down_list
, false);
3749 /* If there were no widgets to power down we're already in
3753 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
3754 snd_soc_dapm_set_bias_level(dapm
,
3755 SND_SOC_BIAS_PREPARE
);
3756 dapm_seq_run(dapm
, &down_list
, 0, false);
3757 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
3758 snd_soc_dapm_set_bias_level(dapm
,
3759 SND_SOC_BIAS_STANDBY
);
3762 mutex_unlock(&card
->dapm_mutex
);
3766 * snd_soc_dapm_shutdown - callback for system shutdown
3768 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
3770 struct snd_soc_codec
*codec
;
3772 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
3773 soc_dapm_shutdown_codec(&codec
->dapm
);
3774 if (codec
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
3775 snd_soc_dapm_set_bias_level(&codec
->dapm
,
3780 /* Module information */
3781 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3782 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3783 MODULE_LICENSE("GPL");