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_in
] = 3,
59 [snd_soc_dapm_dai_out
] = 3,
60 [snd_soc_dapm_aif_in
] = 3,
61 [snd_soc_dapm_aif_out
] = 3,
62 [snd_soc_dapm_mic
] = 4,
63 [snd_soc_dapm_mux
] = 5,
64 [snd_soc_dapm_virt_mux
] = 5,
65 [snd_soc_dapm_value_mux
] = 5,
66 [snd_soc_dapm_dac
] = 6,
67 [snd_soc_dapm_switch
] = 7,
68 [snd_soc_dapm_mixer
] = 7,
69 [snd_soc_dapm_mixer_named_ctl
] = 7,
70 [snd_soc_dapm_pga
] = 8,
71 [snd_soc_dapm_adc
] = 9,
72 [snd_soc_dapm_out_drv
] = 10,
73 [snd_soc_dapm_hp
] = 10,
74 [snd_soc_dapm_spk
] = 10,
75 [snd_soc_dapm_line
] = 10,
76 [snd_soc_dapm_post
] = 11,
79 static int dapm_down_seq
[] = {
80 [snd_soc_dapm_pre
] = 0,
81 [snd_soc_dapm_adc
] = 1,
82 [snd_soc_dapm_hp
] = 2,
83 [snd_soc_dapm_spk
] = 2,
84 [snd_soc_dapm_line
] = 2,
85 [snd_soc_dapm_out_drv
] = 2,
86 [snd_soc_dapm_pga
] = 4,
87 [snd_soc_dapm_switch
] = 5,
88 [snd_soc_dapm_mixer_named_ctl
] = 5,
89 [snd_soc_dapm_mixer
] = 5,
90 [snd_soc_dapm_dac
] = 6,
91 [snd_soc_dapm_mic
] = 7,
92 [snd_soc_dapm_micbias
] = 8,
93 [snd_soc_dapm_mux
] = 9,
94 [snd_soc_dapm_virt_mux
] = 9,
95 [snd_soc_dapm_value_mux
] = 9,
96 [snd_soc_dapm_aif_in
] = 10,
97 [snd_soc_dapm_aif_out
] = 10,
98 [snd_soc_dapm_dai_in
] = 10,
99 [snd_soc_dapm_dai_out
] = 10,
100 [snd_soc_dapm_dai_link
] = 11,
101 [snd_soc_dapm_clock_supply
] = 12,
102 [snd_soc_dapm_regulator_supply
] = 12,
103 [snd_soc_dapm_supply
] = 12,
104 [snd_soc_dapm_post
] = 13,
107 static void pop_wait(u32 pop_time
)
110 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
113 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
121 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
126 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
127 dev_info(dev
, "%s", buf
);
133 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
135 return !list_empty(&w
->dirty
);
138 void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
140 if (!dapm_dirty_widget(w
)) {
141 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
143 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
146 EXPORT_SYMBOL_GPL(dapm_mark_dirty
);
148 void dapm_mark_io_dirty(struct snd_soc_dapm_context
*dapm
)
150 struct snd_soc_card
*card
= dapm
->card
;
151 struct snd_soc_dapm_widget
*w
;
153 mutex_lock(&card
->dapm_mutex
);
155 list_for_each_entry(w
, &card
->widgets
, list
) {
157 case snd_soc_dapm_input
:
158 case snd_soc_dapm_output
:
159 dapm_mark_dirty(w
, "Rechecking inputs and outputs");
166 mutex_unlock(&card
->dapm_mutex
);
168 EXPORT_SYMBOL_GPL(dapm_mark_io_dirty
);
170 /* create a new dapm widget */
171 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
172 const struct snd_soc_dapm_widget
*_widget
)
174 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
177 /* get snd_card from DAPM context */
178 static inline struct snd_card
*dapm_get_snd_card(
179 struct snd_soc_dapm_context
*dapm
)
182 return dapm
->codec
->card
->snd_card
;
183 else if (dapm
->platform
)
184 return dapm
->platform
->card
->snd_card
;
192 /* get soc_card from DAPM context */
193 static inline struct snd_soc_card
*dapm_get_soc_card(
194 struct snd_soc_dapm_context
*dapm
)
197 return dapm
->codec
->card
;
198 else if (dapm
->platform
)
199 return dapm
->platform
->card
;
207 static void dapm_reset(struct snd_soc_card
*card
)
209 struct snd_soc_dapm_widget
*w
;
211 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
213 list_for_each_entry(w
, &card
->widgets
, list
) {
214 w
->power_checked
= false;
220 static int soc_widget_read(struct snd_soc_dapm_widget
*w
, int reg
)
223 return snd_soc_read(w
->codec
, reg
);
224 else if (w
->platform
)
225 return snd_soc_platform_read(w
->platform
, reg
);
227 dev_err(w
->dapm
->dev
, "ASoC: no valid widget read method\n");
231 static int soc_widget_write(struct snd_soc_dapm_widget
*w
, int reg
, int val
)
234 return snd_soc_write(w
->codec
, reg
, val
);
235 else if (w
->platform
)
236 return snd_soc_platform_write(w
->platform
, reg
, val
);
238 dev_err(w
->dapm
->dev
, "ASoC: no valid widget write method\n");
242 static inline void soc_widget_lock(struct snd_soc_dapm_widget
*w
)
244 if (w
->codec
&& !w
->codec
->using_regmap
)
245 mutex_lock(&w
->codec
->mutex
);
246 else if (w
->platform
)
247 mutex_lock(&w
->platform
->mutex
);
250 static inline void soc_widget_unlock(struct snd_soc_dapm_widget
*w
)
252 if (w
->codec
&& !w
->codec
->using_regmap
)
253 mutex_unlock(&w
->codec
->mutex
);
254 else if (w
->platform
)
255 mutex_unlock(&w
->platform
->mutex
);
258 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget
*w
,
259 unsigned short reg
, unsigned int mask
, unsigned int value
)
262 unsigned int old
, new;
265 if (w
->codec
&& w
->codec
->using_regmap
) {
266 ret
= regmap_update_bits_check(w
->codec
->control_data
,
267 reg
, mask
, value
, &change
);
272 ret
= soc_widget_read(w
, reg
);
274 soc_widget_unlock(w
);
279 new = (old
& ~mask
) | (value
& mask
);
282 ret
= soc_widget_write(w
, reg
, new);
284 soc_widget_unlock(w
);
288 soc_widget_unlock(w
);
295 * snd_soc_dapm_set_bias_level - set the bias level for the system
296 * @dapm: DAPM context
297 * @level: level to configure
299 * Configure the bias (power) levels for the SoC audio device.
301 * Returns 0 for success else error.
303 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
304 enum snd_soc_bias_level level
)
306 struct snd_soc_card
*card
= dapm
->card
;
309 trace_snd_soc_bias_level_start(card
, level
);
311 if (card
&& card
->set_bias_level
)
312 ret
= card
->set_bias_level(card
, dapm
, level
);
317 if (dapm
->codec
->driver
->set_bias_level
)
318 ret
= dapm
->codec
->driver
->set_bias_level(dapm
->codec
,
321 dapm
->bias_level
= level
;
322 } else if (!card
|| dapm
!= &card
->dapm
) {
323 dapm
->bias_level
= level
;
329 if (card
&& card
->set_bias_level_post
)
330 ret
= card
->set_bias_level_post(card
, dapm
, level
);
332 trace_snd_soc_bias_level_done(card
, level
);
337 /* set up initial codec paths */
338 static void dapm_set_path_status(struct snd_soc_dapm_widget
*w
,
339 struct snd_soc_dapm_path
*p
, int i
)
342 case snd_soc_dapm_switch
:
343 case snd_soc_dapm_mixer
:
344 case snd_soc_dapm_mixer_named_ctl
: {
346 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
347 w
->kcontrol_news
[i
].private_value
;
348 unsigned int reg
= mc
->reg
;
349 unsigned int shift
= mc
->shift
;
351 unsigned int mask
= (1 << fls(max
)) - 1;
352 unsigned int invert
= mc
->invert
;
354 val
= soc_widget_read(w
, reg
);
355 val
= (val
>> shift
) & mask
;
362 case snd_soc_dapm_mux
: {
363 struct soc_enum
*e
= (struct soc_enum
*)
364 w
->kcontrol_news
[i
].private_value
;
367 val
= soc_widget_read(w
, e
->reg
);
368 item
= (val
>> e
->shift_l
) & e
->mask
;
370 if (item
< e
->max
&& !strcmp(p
->name
, e
->texts
[item
]))
376 case snd_soc_dapm_virt_mux
: {
377 struct soc_enum
*e
= (struct soc_enum
*)
378 w
->kcontrol_news
[i
].private_value
;
381 /* since a virtual mux has no backing registers to
382 * decide which path to connect, it will try to match
383 * with the first enumeration. This is to ensure
384 * that the default mux choice (the first) will be
385 * correctly powered up during initialization.
387 if (!strcmp(p
->name
, e
->texts
[0]))
391 case snd_soc_dapm_value_mux
: {
392 struct soc_enum
*e
= (struct soc_enum
*)
393 w
->kcontrol_news
[i
].private_value
;
396 val
= soc_widget_read(w
, e
->reg
);
397 val
= (val
>> e
->shift_l
) & e
->mask
;
398 for (item
= 0; item
< e
->max
; item
++) {
399 if (val
== e
->values
[item
])
403 if (item
< e
->max
&& !strcmp(p
->name
, e
->texts
[item
]))
409 /* does not affect routing - always connected */
410 case snd_soc_dapm_pga
:
411 case snd_soc_dapm_out_drv
:
412 case snd_soc_dapm_output
:
413 case snd_soc_dapm_adc
:
414 case snd_soc_dapm_input
:
415 case snd_soc_dapm_siggen
:
416 case snd_soc_dapm_dac
:
417 case snd_soc_dapm_micbias
:
418 case snd_soc_dapm_vmid
:
419 case snd_soc_dapm_supply
:
420 case snd_soc_dapm_regulator_supply
:
421 case snd_soc_dapm_clock_supply
:
422 case snd_soc_dapm_aif_in
:
423 case snd_soc_dapm_aif_out
:
424 case snd_soc_dapm_dai_in
:
425 case snd_soc_dapm_dai_out
:
426 case snd_soc_dapm_hp
:
427 case snd_soc_dapm_mic
:
428 case snd_soc_dapm_spk
:
429 case snd_soc_dapm_line
:
430 case snd_soc_dapm_dai_link
:
433 /* does affect routing - dynamically connected */
434 case snd_soc_dapm_pre
:
435 case snd_soc_dapm_post
:
441 /* connect mux widget to its interconnecting audio paths */
442 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
443 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
444 struct snd_soc_dapm_path
*path
, const char *control_name
,
445 const struct snd_kcontrol_new
*kcontrol
)
447 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
450 for (i
= 0; i
< e
->max
; i
++) {
451 if (!(strcmp(control_name
, e
->texts
[i
]))) {
452 list_add(&path
->list
, &dapm
->card
->paths
);
453 list_add(&path
->list_sink
, &dest
->sources
);
454 list_add(&path
->list_source
, &src
->sinks
);
455 path
->name
= (char*)e
->texts
[i
];
456 dapm_set_path_status(dest
, path
, 0);
464 /* connect mixer widget to its interconnecting audio paths */
465 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
466 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
467 struct snd_soc_dapm_path
*path
, const char *control_name
)
471 /* search for mixer kcontrol */
472 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
473 if (!strcmp(control_name
, dest
->kcontrol_news
[i
].name
)) {
474 list_add(&path
->list
, &dapm
->card
->paths
);
475 list_add(&path
->list_sink
, &dest
->sources
);
476 list_add(&path
->list_source
, &src
->sinks
);
477 path
->name
= dest
->kcontrol_news
[i
].name
;
478 dapm_set_path_status(dest
, path
, i
);
485 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
486 struct snd_soc_dapm_widget
*kcontrolw
,
487 const struct snd_kcontrol_new
*kcontrol_new
,
488 struct snd_kcontrol
**kcontrol
)
490 struct snd_soc_dapm_widget
*w
;
495 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
496 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
498 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
499 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
501 *kcontrol
= w
->kcontrols
[i
];
510 static void dapm_kcontrol_free(struct snd_kcontrol
*kctl
)
512 kfree(kctl
->private_data
);
516 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
517 * create it. Either way, add the widget into the control's widget list
519 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget
*w
,
520 int kci
, struct snd_soc_dapm_path
*path
)
522 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
523 struct snd_card
*card
= dapm
->card
->snd_card
;
527 struct snd_kcontrol
*kcontrol
;
528 struct snd_soc_dapm_widget_list
*wlist
;
531 bool wname_in_long_name
, kcname_in_long_name
;
537 prefix
= dapm
->codec
->name_prefix
;
542 prefix_len
= strlen(prefix
) + 1;
546 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[kci
],
550 wlist
= kcontrol
->private_data
;
551 wlistentries
= wlist
->num_widgets
+ 1;
557 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
558 wlistentries
* sizeof(struct snd_soc_dapm_widget
*);
559 wlist
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
561 dev_err(dapm
->dev
, "ASoC: can't allocate widget list for %s\n",
565 wlist
->num_widgets
= wlistentries
;
566 wlist
->widgets
[wlistentries
- 1] = w
;
570 wname_in_long_name
= false;
571 kcname_in_long_name
= true;
574 case snd_soc_dapm_switch
:
575 case snd_soc_dapm_mixer
:
576 wname_in_long_name
= true;
577 kcname_in_long_name
= true;
579 case snd_soc_dapm_mixer_named_ctl
:
580 wname_in_long_name
= false;
581 kcname_in_long_name
= true;
583 case snd_soc_dapm_mux
:
584 case snd_soc_dapm_virt_mux
:
585 case snd_soc_dapm_value_mux
:
586 wname_in_long_name
= true;
587 kcname_in_long_name
= false;
595 if (wname_in_long_name
&& kcname_in_long_name
) {
597 * The control will get a prefix from the control
598 * creation process but we're also using the same
599 * prefix for widgets so cut the prefix off the
600 * front of the widget name.
602 long_name
= kasprintf(GFP_KERNEL
, "%s %s",
603 w
->name
+ prefix_len
,
604 w
->kcontrol_news
[kci
].name
);
605 if (long_name
== NULL
) {
611 } else if (wname_in_long_name
) {
613 name
= w
->name
+ prefix_len
;
616 name
= w
->kcontrol_news
[kci
].name
;
619 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[kci
], wlist
, name
,
621 kcontrol
->private_free
= dapm_kcontrol_free
;
623 ret
= snd_ctl_add(card
, kcontrol
);
626 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
633 kcontrol
->private_data
= wlist
;
634 w
->kcontrols
[kci
] = kcontrol
;
635 path
->kcontrol
= kcontrol
;
640 /* create new dapm mixer control */
641 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
644 struct snd_soc_dapm_path
*path
;
647 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
649 list_for_each_entry(path
, &w
->sources
, list_sink
) {
650 /* mixer/mux paths name must match control name */
651 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
654 if (w
->kcontrols
[i
]) {
655 path
->kcontrol
= w
->kcontrols
[i
];
659 ret
= dapm_create_or_share_mixmux_kcontrol(w
, i
, path
);
668 /* create new dapm mux control */
669 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
671 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
672 struct snd_soc_dapm_path
*path
;
675 if (w
->num_kcontrols
!= 1) {
677 "ASoC: mux %s has incorrect number of controls\n",
682 if (list_empty(&w
->sources
)) {
683 dev_err(dapm
->dev
, "ASoC: mux %s has no paths\n", w
->name
);
687 path
= list_first_entry(&w
->sources
, struct snd_soc_dapm_path
,
690 ret
= dapm_create_or_share_mixmux_kcontrol(w
, 0, path
);
694 list_for_each_entry(path
, &w
->sources
, list_sink
)
695 path
->kcontrol
= w
->kcontrols
[0];
700 /* create new dapm volume control */
701 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
703 if (w
->num_kcontrols
)
704 dev_err(w
->dapm
->dev
,
705 "ASoC: PGA controls not supported: '%s'\n", w
->name
);
710 /* reset 'walked' bit for each dapm path */
711 static void dapm_clear_walk_output(struct snd_soc_dapm_context
*dapm
,
712 struct list_head
*sink
)
714 struct snd_soc_dapm_path
*p
;
716 list_for_each_entry(p
, sink
, list_source
) {
719 dapm_clear_walk_output(dapm
, &p
->sink
->sinks
);
724 static void dapm_clear_walk_input(struct snd_soc_dapm_context
*dapm
,
725 struct list_head
*source
)
727 struct snd_soc_dapm_path
*p
;
729 list_for_each_entry(p
, source
, list_sink
) {
732 dapm_clear_walk_input(dapm
, &p
->source
->sources
);
738 /* We implement power down on suspend by checking the power state of
739 * the ALSA card - when we are suspending the ALSA state for the card
742 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
744 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
747 case SNDRV_CTL_POWER_D3hot
:
748 case SNDRV_CTL_POWER_D3cold
:
749 if (widget
->ignore_suspend
)
750 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
752 return widget
->ignore_suspend
;
758 /* add widget to list if it's not already in the list */
759 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list
**list
,
760 struct snd_soc_dapm_widget
*w
)
762 struct snd_soc_dapm_widget_list
*wlist
;
763 int wlistsize
, wlistentries
, i
;
770 /* is this widget already in the list */
771 for (i
= 0; i
< wlist
->num_widgets
; i
++) {
772 if (wlist
->widgets
[i
] == w
)
776 /* allocate some new space */
777 wlistentries
= wlist
->num_widgets
+ 1;
778 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
779 wlistentries
* sizeof(struct snd_soc_dapm_widget
*);
780 *list
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
782 dev_err(w
->dapm
->dev
, "ASoC: can't allocate widget list for %s\n",
788 /* insert the widget */
789 dev_dbg(w
->dapm
->dev
, "ASoC: added %s in widget list pos %d\n",
790 w
->name
, wlist
->num_widgets
);
792 wlist
->widgets
[wlist
->num_widgets
] = w
;
793 wlist
->num_widgets
++;
798 * Recursively check for a completed path to an active or physically connected
799 * output widget. Returns number of complete paths.
801 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
802 struct snd_soc_dapm_widget_list
**list
)
804 struct snd_soc_dapm_path
*path
;
807 if (widget
->outputs
>= 0)
808 return widget
->outputs
;
810 DAPM_UPDATE_STAT(widget
, path_checks
);
812 switch (widget
->id
) {
813 case snd_soc_dapm_supply
:
814 case snd_soc_dapm_regulator_supply
:
815 case snd_soc_dapm_clock_supply
:
821 switch (widget
->id
) {
822 case snd_soc_dapm_adc
:
823 case snd_soc_dapm_aif_out
:
824 case snd_soc_dapm_dai_out
:
825 if (widget
->active
) {
826 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
827 return widget
->outputs
;
833 if (widget
->connected
) {
834 /* connected pin ? */
835 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
) {
836 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
837 return widget
->outputs
;
840 /* connected jack or spk ? */
841 if (widget
->id
== snd_soc_dapm_hp
||
842 widget
->id
== snd_soc_dapm_spk
||
843 (widget
->id
== snd_soc_dapm_line
&&
844 !list_empty(&widget
->sources
))) {
845 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
846 return widget
->outputs
;
850 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
851 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
862 trace_snd_soc_dapm_output_path(widget
, path
);
864 if (path
->sink
&& path
->connect
) {
868 /* do we need to add this widget to the list ? */
871 err
= dapm_list_add_widget(list
, path
->sink
);
873 dev_err(widget
->dapm
->dev
,
874 "ASoC: could not add widget %s\n",
881 con
+= is_connected_output_ep(path
->sink
, list
);
887 widget
->outputs
= con
;
893 * Recursively check for a completed path to an active or physically connected
894 * input widget. Returns number of complete paths.
896 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
897 struct snd_soc_dapm_widget_list
**list
)
899 struct snd_soc_dapm_path
*path
;
902 if (widget
->inputs
>= 0)
903 return widget
->inputs
;
905 DAPM_UPDATE_STAT(widget
, path_checks
);
907 switch (widget
->id
) {
908 case snd_soc_dapm_supply
:
909 case snd_soc_dapm_regulator_supply
:
910 case snd_soc_dapm_clock_supply
:
916 /* active stream ? */
917 switch (widget
->id
) {
918 case snd_soc_dapm_dac
:
919 case snd_soc_dapm_aif_in
:
920 case snd_soc_dapm_dai_in
:
921 if (widget
->active
) {
922 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
923 return widget
->inputs
;
929 if (widget
->connected
) {
930 /* connected pin ? */
931 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
) {
932 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
933 return widget
->inputs
;
936 /* connected VMID/Bias for lower pops */
937 if (widget
->id
== snd_soc_dapm_vmid
) {
938 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
939 return widget
->inputs
;
942 /* connected jack ? */
943 if (widget
->id
== snd_soc_dapm_mic
||
944 (widget
->id
== snd_soc_dapm_line
&&
945 !list_empty(&widget
->sinks
))) {
946 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
947 return widget
->inputs
;
950 /* signal generator */
951 if (widget
->id
== snd_soc_dapm_siggen
) {
952 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
953 return widget
->inputs
;
957 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
958 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
969 trace_snd_soc_dapm_input_path(widget
, path
);
971 if (path
->source
&& path
->connect
) {
975 /* do we need to add this widget to the list ? */
978 err
= dapm_list_add_widget(list
, path
->source
);
980 dev_err(widget
->dapm
->dev
,
981 "ASoC: could not add widget %s\n",
988 con
+= is_connected_input_ep(path
->source
, list
);
994 widget
->inputs
= con
;
1000 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1001 * @dai: the soc DAI.
1002 * @stream: stream direction.
1003 * @list: list of active widgets for this stream.
1005 * Queries DAPM graph as to whether an valid audio stream path exists for
1006 * the initial stream specified by name. This takes into account
1007 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1009 * Returns the number of valid paths or negative error.
1011 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
1012 struct snd_soc_dapm_widget_list
**list
)
1014 struct snd_soc_card
*card
= dai
->card
;
1017 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1020 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
1021 paths
= is_connected_output_ep(dai
->playback_widget
, list
);
1022 dapm_clear_walk_output(&card
->dapm
,
1023 &dai
->playback_widget
->sinks
);
1025 paths
= is_connected_input_ep(dai
->capture_widget
, list
);
1026 dapm_clear_walk_input(&card
->dapm
,
1027 &dai
->capture_widget
->sources
);
1030 trace_snd_soc_dapm_connected(paths
, stream
);
1031 mutex_unlock(&card
->dapm_mutex
);
1037 * Handler for generic register modifier widget.
1039 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
1040 struct snd_kcontrol
*kcontrol
, int event
)
1044 if (SND_SOC_DAPM_EVENT_ON(event
))
1049 soc_widget_update_bits_locked(w
, -(w
->reg
+ 1),
1050 w
->mask
<< w
->shift
, val
<< w
->shift
);
1054 EXPORT_SYMBOL_GPL(dapm_reg_event
);
1057 * Handler for regulator supply widget.
1059 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1060 struct snd_kcontrol
*kcontrol
, int event
)
1064 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1065 if (w
->invert
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1066 ret
= regulator_allow_bypass(w
->regulator
, false);
1068 dev_warn(w
->dapm
->dev
,
1069 "ASoC: Failed to bypass %s: %d\n",
1073 return regulator_enable(w
->regulator
);
1075 if (w
->invert
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1076 ret
= regulator_allow_bypass(w
->regulator
, true);
1078 dev_warn(w
->dapm
->dev
,
1079 "ASoC: Failed to unbypass %s: %d\n",
1083 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1086 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1089 * Handler for clock supply widget.
1091 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1092 struct snd_kcontrol
*kcontrol
, int event
)
1097 #ifdef CONFIG_HAVE_CLK
1098 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1099 return clk_prepare_enable(w
->clk
);
1101 clk_disable_unprepare(w
->clk
);
1107 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1109 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1111 if (w
->power_checked
)
1112 return w
->new_power
;
1117 w
->new_power
= w
->power_check(w
);
1119 w
->power_checked
= true;
1121 return w
->new_power
;
1124 /* Generic check to see if a widget should be powered.
1126 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1130 DAPM_UPDATE_STAT(w
, power_checks
);
1132 in
= is_connected_input_ep(w
, NULL
);
1133 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1134 out
= is_connected_output_ep(w
, NULL
);
1135 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1136 return out
!= 0 && in
!= 0;
1139 /* Check to see if an ADC has power */
1140 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
1144 DAPM_UPDATE_STAT(w
, power_checks
);
1147 in
= is_connected_input_ep(w
, NULL
);
1148 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1151 return dapm_generic_check_power(w
);
1155 /* Check to see if a DAC has power */
1156 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
1160 DAPM_UPDATE_STAT(w
, power_checks
);
1163 out
= is_connected_output_ep(w
, NULL
);
1164 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1167 return dapm_generic_check_power(w
);
1171 /* Check to see if a power supply is needed */
1172 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1174 struct snd_soc_dapm_path
*path
;
1176 DAPM_UPDATE_STAT(w
, power_checks
);
1178 /* Check if one of our outputs is connected */
1179 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1180 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1185 if (path
->connected
&&
1186 !path
->connected(path
->source
, path
->sink
))
1192 if (dapm_widget_power_check(path
->sink
))
1199 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1204 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1205 struct snd_soc_dapm_widget
*b
,
1213 sort
= dapm_down_seq
;
1215 if (sort
[a
->id
] != sort
[b
->id
])
1216 return sort
[a
->id
] - sort
[b
->id
];
1217 if (a
->subseq
!= b
->subseq
) {
1219 return a
->subseq
- b
->subseq
;
1221 return b
->subseq
- a
->subseq
;
1223 if (a
->reg
!= b
->reg
)
1224 return a
->reg
- b
->reg
;
1225 if (a
->dapm
!= b
->dapm
)
1226 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1231 /* Insert a widget in order into a DAPM power sequence. */
1232 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1233 struct list_head
*list
,
1236 struct snd_soc_dapm_widget
*w
;
1238 list_for_each_entry(w
, list
, power_list
)
1239 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1240 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1244 list_add_tail(&new_widget
->power_list
, list
);
1247 static void dapm_seq_check_event(struct snd_soc_dapm_context
*dapm
,
1248 struct snd_soc_dapm_widget
*w
, int event
)
1250 struct snd_soc_card
*card
= dapm
->card
;
1251 const char *ev_name
;
1255 case SND_SOC_DAPM_PRE_PMU
:
1256 ev_name
= "PRE_PMU";
1259 case SND_SOC_DAPM_POST_PMU
:
1260 ev_name
= "POST_PMU";
1263 case SND_SOC_DAPM_PRE_PMD
:
1264 ev_name
= "PRE_PMD";
1267 case SND_SOC_DAPM_POST_PMD
:
1268 ev_name
= "POST_PMD";
1271 case SND_SOC_DAPM_WILL_PMU
:
1272 ev_name
= "WILL_PMU";
1275 case SND_SOC_DAPM_WILL_PMD
:
1276 ev_name
= "WILL_PMD";
1284 if (w
->power
!= power
)
1287 if (w
->event
&& (w
->event_flags
& event
)) {
1288 pop_dbg(dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1290 trace_snd_soc_dapm_widget_event_start(w
, event
);
1291 ret
= w
->event(w
, NULL
, event
);
1292 trace_snd_soc_dapm_widget_event_done(w
, event
);
1294 dev_err(dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1295 ev_name
, w
->name
, ret
);
1299 /* Apply the coalesced changes from a DAPM sequence */
1300 static void dapm_seq_run_coalesced(struct snd_soc_dapm_context
*dapm
,
1301 struct list_head
*pending
)
1303 struct snd_soc_card
*card
= dapm
->card
;
1304 struct snd_soc_dapm_widget
*w
;
1306 unsigned int value
= 0;
1307 unsigned int mask
= 0;
1308 unsigned int cur_mask
;
1310 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1313 list_for_each_entry(w
, pending
, power_list
) {
1314 cur_mask
= 1 << w
->shift
;
1315 BUG_ON(reg
!= w
->reg
);
1326 pop_dbg(dapm
->dev
, card
->pop_time
,
1327 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1328 w
->name
, reg
, value
, mask
);
1330 /* Check for events */
1331 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMU
);
1332 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMD
);
1336 /* Any widget will do, they should all be updating the
1339 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1342 pop_dbg(dapm
->dev
, card
->pop_time
,
1343 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1344 value
, mask
, reg
, card
->pop_time
);
1345 pop_wait(card
->pop_time
);
1346 soc_widget_update_bits_locked(w
, reg
, mask
, value
);
1349 list_for_each_entry(w
, pending
, power_list
) {
1350 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMU
);
1351 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMD
);
1355 /* Apply a DAPM power sequence.
1357 * We walk over a pre-sorted list of widgets to apply power to. In
1358 * order to minimise the number of writes to the device required
1359 * multiple widgets will be updated in a single write where possible.
1360 * Currently anything that requires more than a single write is not
1363 static void dapm_seq_run(struct snd_soc_dapm_context
*dapm
,
1364 struct list_head
*list
, int event
, bool power_up
)
1366 struct snd_soc_dapm_widget
*w
, *n
;
1369 int cur_subseq
= -1;
1370 int cur_reg
= SND_SOC_NOPM
;
1371 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1378 sort
= dapm_down_seq
;
1380 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1383 /* Do we need to apply any queued changes? */
1384 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1385 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1386 if (!list_empty(&pending
))
1387 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1389 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1390 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1391 if (sort
[i
] == cur_sort
)
1392 cur_dapm
->seq_notifier(cur_dapm
,
1397 INIT_LIST_HEAD(&pending
);
1399 cur_subseq
= INT_MIN
;
1400 cur_reg
= SND_SOC_NOPM
;
1405 case snd_soc_dapm_pre
:
1407 list_for_each_entry_safe_continue(w
, n
, list
,
1410 if (event
== SND_SOC_DAPM_STREAM_START
)
1412 NULL
, SND_SOC_DAPM_PRE_PMU
);
1413 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1415 NULL
, SND_SOC_DAPM_PRE_PMD
);
1418 case snd_soc_dapm_post
:
1420 list_for_each_entry_safe_continue(w
, n
, list
,
1423 if (event
== SND_SOC_DAPM_STREAM_START
)
1425 NULL
, SND_SOC_DAPM_POST_PMU
);
1426 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1428 NULL
, SND_SOC_DAPM_POST_PMD
);
1432 /* Queue it up for application */
1433 cur_sort
= sort
[w
->id
];
1434 cur_subseq
= w
->subseq
;
1437 list_move(&w
->power_list
, &pending
);
1442 dev_err(w
->dapm
->dev
,
1443 "ASoC: Failed to apply widget power: %d\n", ret
);
1446 if (!list_empty(&pending
))
1447 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1449 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1450 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1451 if (sort
[i
] == cur_sort
)
1452 cur_dapm
->seq_notifier(cur_dapm
,
1457 static void dapm_widget_update(struct snd_soc_dapm_context
*dapm
)
1459 struct snd_soc_dapm_update
*update
= dapm
->update
;
1460 struct snd_soc_dapm_widget
*w
;
1469 (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1470 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1472 dev_err(dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1476 ret
= soc_widget_update_bits_locked(w
, update
->reg
, update
->mask
,
1479 dev_err(dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1483 (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1484 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1486 dev_err(dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1491 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1492 * they're changing state.
1494 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1496 struct snd_soc_dapm_context
*d
= data
;
1499 /* If we're off and we're not supposed to be go into STANDBY */
1500 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1501 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1503 pm_runtime_get_sync(d
->dev
);
1505 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1508 "ASoC: Failed to turn on bias: %d\n", ret
);
1511 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1512 if (d
->bias_level
!= d
->target_bias_level
) {
1513 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1516 "ASoC: Failed to prepare bias: %d\n", ret
);
1520 /* Async callback run prior to DAPM sequences - brings to their final
1523 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1525 struct snd_soc_dapm_context
*d
= data
;
1528 /* If we just powered the last thing off drop to standby bias */
1529 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1530 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1531 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1532 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1534 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1538 /* If we're in standby and can support bias off then do that */
1539 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1540 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1541 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1543 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1547 pm_runtime_put(d
->dev
);
1550 /* If we just powered up then move to active bias */
1551 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1552 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1553 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1555 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1560 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1561 bool power
, bool connect
)
1563 /* If a connection is being made or broken then that update
1564 * will have marked the peer dirty, otherwise the widgets are
1565 * not connected and this update has no impact. */
1569 /* If the peer is already in the state we're moving to then we
1570 * won't have an impact on it. */
1571 if (power
!= peer
->power
)
1572 dapm_mark_dirty(peer
, "peer state change");
1575 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1576 struct list_head
*up_list
,
1577 struct list_head
*down_list
)
1579 struct snd_soc_dapm_path
*path
;
1581 if (w
->power
== power
)
1584 trace_snd_soc_dapm_widget_power(w
, power
);
1586 /* If we changed our power state perhaps our neigbours changed
1589 list_for_each_entry(path
, &w
->sources
, list_sink
) {
1591 dapm_widget_set_peer_power(path
->source
, power
,
1596 case snd_soc_dapm_supply
:
1597 case snd_soc_dapm_regulator_supply
:
1598 case snd_soc_dapm_clock_supply
:
1599 /* Supplies can't affect their outputs, only their inputs */
1602 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1604 dapm_widget_set_peer_power(path
->sink
, power
,
1612 dapm_seq_insert(w
, up_list
, true);
1614 dapm_seq_insert(w
, down_list
, false);
1619 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1620 struct list_head
*up_list
,
1621 struct list_head
*down_list
)
1626 case snd_soc_dapm_pre
:
1627 dapm_seq_insert(w
, down_list
, false);
1629 case snd_soc_dapm_post
:
1630 dapm_seq_insert(w
, up_list
, true);
1634 power
= dapm_widget_power_check(w
);
1636 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1642 * Scan each dapm widget for complete audio path.
1643 * A complete path is a route that has valid endpoints i.e.:-
1645 * o DAC to output pin.
1646 * o Input Pin to ADC.
1647 * o Input pin to Output pin (bypass, sidetone)
1648 * o DAC to ADC (loopback).
1650 static int dapm_power_widgets(struct snd_soc_dapm_context
*dapm
, int event
)
1652 struct snd_soc_card
*card
= dapm
->card
;
1653 struct snd_soc_dapm_widget
*w
;
1654 struct snd_soc_dapm_context
*d
;
1656 LIST_HEAD(down_list
);
1657 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1658 enum snd_soc_bias_level bias
;
1660 trace_snd_soc_dapm_start(card
);
1662 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1663 if (d
->idle_bias_off
)
1664 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1666 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1671 /* Check which widgets we need to power and store them in
1672 * lists indicating if they should be powered up or down. We
1673 * only check widgets that have been flagged as dirty but note
1674 * that new widgets may be added to the dirty list while we
1677 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1678 dapm_power_one_widget(w
, &up_list
, &down_list
);
1681 list_for_each_entry(w
, &card
->widgets
, list
) {
1683 case snd_soc_dapm_pre
:
1684 case snd_soc_dapm_post
:
1685 /* These widgets always need to be powered */
1688 list_del_init(&w
->dirty
);
1695 /* Supplies and micbiases only bring the
1696 * context up to STANDBY as unless something
1697 * else is active and passing audio they
1698 * generally don't require full power. Signal
1699 * generators are virtual pins and have no
1700 * power impact themselves.
1703 case snd_soc_dapm_siggen
:
1705 case snd_soc_dapm_supply
:
1706 case snd_soc_dapm_regulator_supply
:
1707 case snd_soc_dapm_clock_supply
:
1708 case snd_soc_dapm_micbias
:
1709 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1710 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1713 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1720 /* Force all contexts in the card to the same bias state if
1721 * they're not ground referenced.
1723 bias
= SND_SOC_BIAS_OFF
;
1724 list_for_each_entry(d
, &card
->dapm_list
, list
)
1725 if (d
->target_bias_level
> bias
)
1726 bias
= d
->target_bias_level
;
1727 list_for_each_entry(d
, &card
->dapm_list
, list
)
1728 if (!d
->idle_bias_off
)
1729 d
->target_bias_level
= bias
;
1731 trace_snd_soc_dapm_walk_done(card
);
1733 /* Run all the bias changes in parallel */
1734 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1735 async_schedule_domain(dapm_pre_sequence_async
, d
,
1737 async_synchronize_full_domain(&async_domain
);
1739 list_for_each_entry(w
, &down_list
, power_list
) {
1740 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_WILL_PMD
);
1743 list_for_each_entry(w
, &up_list
, power_list
) {
1744 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_WILL_PMU
);
1747 /* Power down widgets first; try to avoid amplifying pops. */
1748 dapm_seq_run(dapm
, &down_list
, event
, false);
1750 dapm_widget_update(dapm
);
1753 dapm_seq_run(dapm
, &up_list
, event
, true);
1755 /* Run all the bias changes in parallel */
1756 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1757 async_schedule_domain(dapm_post_sequence_async
, d
,
1759 async_synchronize_full_domain(&async_domain
);
1761 /* do we need to notify any clients that DAPM event is complete */
1762 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1763 if (d
->stream_event
)
1764 d
->stream_event(d
, event
);
1767 pop_dbg(dapm
->dev
, card
->pop_time
,
1768 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1769 pop_wait(card
->pop_time
);
1771 trace_snd_soc_dapm_done(card
);
1776 #ifdef CONFIG_DEBUG_FS
1777 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1778 char __user
*user_buf
,
1779 size_t count
, loff_t
*ppos
)
1781 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1785 struct snd_soc_dapm_path
*p
= NULL
;
1787 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1791 in
= is_connected_input_ep(w
, NULL
);
1792 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1793 out
= is_connected_output_ep(w
, NULL
);
1794 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1796 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1797 w
->name
, w
->power
? "On" : "Off",
1798 w
->force
? " (forced)" : "", in
, out
);
1801 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1802 " - R%d(0x%x) bit %d",
1803 w
->reg
, w
->reg
, w
->shift
);
1805 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1808 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1810 w
->active
? "active" : "inactive");
1812 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1813 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1817 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1818 " in \"%s\" \"%s\"\n",
1819 p
->name
? p
->name
: "static",
1822 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1823 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1827 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1828 " out \"%s\" \"%s\"\n",
1829 p
->name
? p
->name
: "static",
1833 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1839 static const struct file_operations dapm_widget_power_fops
= {
1840 .open
= simple_open
,
1841 .read
= dapm_widget_power_read_file
,
1842 .llseek
= default_llseek
,
1845 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1846 size_t count
, loff_t
*ppos
)
1848 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1851 switch (dapm
->bias_level
) {
1852 case SND_SOC_BIAS_ON
:
1855 case SND_SOC_BIAS_PREPARE
:
1856 level
= "Prepare\n";
1858 case SND_SOC_BIAS_STANDBY
:
1859 level
= "Standby\n";
1861 case SND_SOC_BIAS_OFF
:
1866 level
= "Unknown\n";
1870 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1874 static const struct file_operations dapm_bias_fops
= {
1875 .open
= simple_open
,
1876 .read
= dapm_bias_read_file
,
1877 .llseek
= default_llseek
,
1880 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1881 struct dentry
*parent
)
1885 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
1887 if (!dapm
->debugfs_dapm
) {
1889 "ASoC: Failed to create DAPM debugfs directory\n");
1893 d
= debugfs_create_file("bias_level", 0444,
1894 dapm
->debugfs_dapm
, dapm
,
1898 "ASoC: Failed to create bias level debugfs file\n");
1901 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1903 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1906 if (!dapm
->debugfs_dapm
|| !w
->name
)
1909 d
= debugfs_create_file(w
->name
, 0444,
1910 dapm
->debugfs_dapm
, w
,
1911 &dapm_widget_power_fops
);
1913 dev_warn(w
->dapm
->dev
,
1914 "ASoC: Failed to create %s debugfs file\n",
1918 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1920 debugfs_remove_recursive(dapm
->debugfs_dapm
);
1924 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1925 struct dentry
*parent
)
1929 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1933 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1939 /* test and update the power status of a mux widget */
1940 static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1941 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
1943 struct snd_soc_dapm_path
*path
;
1946 if (widget
->id
!= snd_soc_dapm_mux
&&
1947 widget
->id
!= snd_soc_dapm_virt_mux
&&
1948 widget
->id
!= snd_soc_dapm_value_mux
)
1951 /* find dapm widget path assoc with kcontrol */
1952 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1953 if (path
->kcontrol
!= kcontrol
)
1956 if (!path
->name
|| !e
->texts
[mux
])
1960 /* we now need to match the string in the enum to the path */
1961 if (!(strcmp(path
->name
, e
->texts
[mux
]))) {
1962 path
->connect
= 1; /* new connection */
1963 dapm_mark_dirty(path
->source
, "mux connection");
1966 dapm_mark_dirty(path
->source
,
1967 "mux disconnection");
1968 path
->connect
= 0; /* old connection must be powered down */
1973 dapm_mark_dirty(widget
, "mux change");
1974 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1980 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1981 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
1983 struct snd_soc_card
*card
= widget
->dapm
->card
;
1986 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1987 ret
= soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
1988 mutex_unlock(&card
->dapm_mutex
);
1990 soc_dpcm_runtime_update(widget
);
1993 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
1995 /* test and update the power status of a mixer or switch widget */
1996 static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1997 struct snd_kcontrol
*kcontrol
, int connect
)
1999 struct snd_soc_dapm_path
*path
;
2002 if (widget
->id
!= snd_soc_dapm_mixer
&&
2003 widget
->id
!= snd_soc_dapm_mixer_named_ctl
&&
2004 widget
->id
!= snd_soc_dapm_switch
)
2007 /* find dapm widget path assoc with kcontrol */
2008 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
2009 if (path
->kcontrol
!= kcontrol
)
2012 /* found, now check type */
2014 path
->connect
= connect
;
2015 dapm_mark_dirty(path
->source
, "mixer connection");
2019 dapm_mark_dirty(widget
, "mixer update");
2020 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
2026 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
2027 struct snd_kcontrol
*kcontrol
, int connect
)
2029 struct snd_soc_card
*card
= widget
->dapm
->card
;
2032 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2033 ret
= soc_dapm_mixer_update_power(widget
, kcontrol
, connect
);
2034 mutex_unlock(&card
->dapm_mutex
);
2036 soc_dpcm_runtime_update(widget
);
2039 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
2041 /* show dapm widget status in sys fs */
2042 static ssize_t
dapm_widget_show(struct device
*dev
,
2043 struct device_attribute
*attr
, char *buf
)
2045 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2046 struct snd_soc_codec
*codec
=rtd
->codec
;
2047 struct snd_soc_dapm_widget
*w
;
2049 char *state
= "not set";
2051 list_for_each_entry(w
, &codec
->card
->widgets
, list
) {
2052 if (w
->dapm
!= &codec
->dapm
)
2055 /* only display widgets that burnm power */
2057 case snd_soc_dapm_hp
:
2058 case snd_soc_dapm_mic
:
2059 case snd_soc_dapm_spk
:
2060 case snd_soc_dapm_line
:
2061 case snd_soc_dapm_micbias
:
2062 case snd_soc_dapm_dac
:
2063 case snd_soc_dapm_adc
:
2064 case snd_soc_dapm_pga
:
2065 case snd_soc_dapm_out_drv
:
2066 case snd_soc_dapm_mixer
:
2067 case snd_soc_dapm_mixer_named_ctl
:
2068 case snd_soc_dapm_supply
:
2069 case snd_soc_dapm_regulator_supply
:
2070 case snd_soc_dapm_clock_supply
:
2072 count
+= sprintf(buf
+ count
, "%s: %s\n",
2073 w
->name
, w
->power
? "On":"Off");
2080 switch (codec
->dapm
.bias_level
) {
2081 case SND_SOC_BIAS_ON
:
2084 case SND_SOC_BIAS_PREPARE
:
2087 case SND_SOC_BIAS_STANDBY
:
2090 case SND_SOC_BIAS_OFF
:
2094 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2099 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2101 int snd_soc_dapm_sys_add(struct device
*dev
)
2103 return device_create_file(dev
, &dev_attr_dapm_widget
);
2106 static void snd_soc_dapm_sys_remove(struct device
*dev
)
2108 device_remove_file(dev
, &dev_attr_dapm_widget
);
2111 static void dapm_free_path(struct snd_soc_dapm_path
*path
)
2113 list_del(&path
->list_sink
);
2114 list_del(&path
->list_source
);
2115 list_del(&path
->list
);
2119 /* free all dapm widgets and resources */
2120 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2122 struct snd_soc_dapm_widget
*w
, *next_w
;
2123 struct snd_soc_dapm_path
*p
, *next_p
;
2125 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2126 if (w
->dapm
!= dapm
)
2130 * remove source and sink paths associated to this widget.
2131 * While removing the path, remove reference to it from both
2132 * source and sink widgets so that path is removed only once.
2134 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
)
2137 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
)
2140 kfree(w
->kcontrols
);
2146 static struct snd_soc_dapm_widget
*dapm_find_widget(
2147 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2148 bool search_other_contexts
)
2150 struct snd_soc_dapm_widget
*w
;
2151 struct snd_soc_dapm_widget
*fallback
= NULL
;
2153 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2154 if (!strcmp(w
->name
, pin
)) {
2155 if (w
->dapm
== dapm
)
2162 if (search_other_contexts
)
2168 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2169 const char *pin
, int status
)
2171 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2174 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2178 if (w
->connected
!= status
)
2179 dapm_mark_dirty(w
, "pin configuration");
2181 w
->connected
= status
;
2189 * snd_soc_dapm_sync - scan and power dapm paths
2190 * @dapm: DAPM context
2192 * Walks all dapm audio paths and powers widgets according to their
2193 * stream or path usage.
2195 * Returns 0 for success.
2197 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2202 * Suppress early reports (eg, jacks syncing their state) to avoid
2203 * silly DAPM runs during card startup.
2205 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2208 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2209 ret
= dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2210 mutex_unlock(&dapm
->card
->dapm_mutex
);
2213 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2215 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2216 const struct snd_soc_dapm_route
*route
)
2218 struct snd_soc_dapm_path
*path
;
2219 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2220 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2222 const char *control
= route
->control
;
2224 char prefixed_sink
[80];
2225 char prefixed_source
[80];
2228 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2229 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2230 dapm
->codec
->name_prefix
, route
->sink
);
2231 sink
= prefixed_sink
;
2232 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2233 dapm
->codec
->name_prefix
, route
->source
);
2234 source
= prefixed_source
;
2237 source
= route
->source
;
2241 * find src and dest widgets over all widgets but favor a widget from
2242 * current DAPM context
2244 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2245 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2247 if (w
->dapm
== dapm
)
2251 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2253 if (w
->dapm
== dapm
)
2257 /* use widget from another DAPM context if not found from this */
2263 if (wsource
== NULL
) {
2264 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2268 if (wsink
== NULL
) {
2269 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2274 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2278 path
->source
= wsource
;
2280 path
->connected
= route
->connected
;
2281 INIT_LIST_HEAD(&path
->list
);
2282 INIT_LIST_HEAD(&path
->list_source
);
2283 INIT_LIST_HEAD(&path
->list_sink
);
2285 /* check for external widgets */
2286 if (wsink
->id
== snd_soc_dapm_input
) {
2287 if (wsource
->id
== snd_soc_dapm_micbias
||
2288 wsource
->id
== snd_soc_dapm_mic
||
2289 wsource
->id
== snd_soc_dapm_line
||
2290 wsource
->id
== snd_soc_dapm_output
)
2293 if (wsource
->id
== snd_soc_dapm_output
) {
2294 if (wsink
->id
== snd_soc_dapm_spk
||
2295 wsink
->id
== snd_soc_dapm_hp
||
2296 wsink
->id
== snd_soc_dapm_line
||
2297 wsink
->id
== snd_soc_dapm_input
)
2301 /* connect static paths */
2302 if (control
== NULL
) {
2303 list_add(&path
->list
, &dapm
->card
->paths
);
2304 list_add(&path
->list_sink
, &wsink
->sources
);
2305 list_add(&path
->list_source
, &wsource
->sinks
);
2310 /* connect dynamic paths */
2311 switch (wsink
->id
) {
2312 case snd_soc_dapm_adc
:
2313 case snd_soc_dapm_dac
:
2314 case snd_soc_dapm_pga
:
2315 case snd_soc_dapm_out_drv
:
2316 case snd_soc_dapm_input
:
2317 case snd_soc_dapm_output
:
2318 case snd_soc_dapm_siggen
:
2319 case snd_soc_dapm_micbias
:
2320 case snd_soc_dapm_vmid
:
2321 case snd_soc_dapm_pre
:
2322 case snd_soc_dapm_post
:
2323 case snd_soc_dapm_supply
:
2324 case snd_soc_dapm_regulator_supply
:
2325 case snd_soc_dapm_clock_supply
:
2326 case snd_soc_dapm_aif_in
:
2327 case snd_soc_dapm_aif_out
:
2328 case snd_soc_dapm_dai_in
:
2329 case snd_soc_dapm_dai_out
:
2330 case snd_soc_dapm_dai_link
:
2331 list_add(&path
->list
, &dapm
->card
->paths
);
2332 list_add(&path
->list_sink
, &wsink
->sources
);
2333 list_add(&path
->list_source
, &wsource
->sinks
);
2336 case snd_soc_dapm_mux
:
2337 case snd_soc_dapm_virt_mux
:
2338 case snd_soc_dapm_value_mux
:
2339 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
2340 &wsink
->kcontrol_news
[0]);
2344 case snd_soc_dapm_switch
:
2345 case snd_soc_dapm_mixer
:
2346 case snd_soc_dapm_mixer_named_ctl
:
2347 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
2351 case snd_soc_dapm_hp
:
2352 case snd_soc_dapm_mic
:
2353 case snd_soc_dapm_line
:
2354 case snd_soc_dapm_spk
:
2355 list_add(&path
->list
, &dapm
->card
->paths
);
2356 list_add(&path
->list_sink
, &wsink
->sources
);
2357 list_add(&path
->list_source
, &wsource
->sinks
);
2362 dapm_mark_dirty(wsource
, "Route added");
2363 dapm_mark_dirty(wsink
, "Route added");
2368 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2369 source
, control
, sink
);
2374 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2375 const struct snd_soc_dapm_route
*route
)
2377 struct snd_soc_dapm_path
*path
, *p
;
2380 char prefixed_sink
[80];
2381 char prefixed_source
[80];
2383 if (route
->control
) {
2385 "ASoC: Removal of routes with controls not supported\n");
2389 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2390 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2391 dapm
->codec
->name_prefix
, route
->sink
);
2392 sink
= prefixed_sink
;
2393 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2394 dapm
->codec
->name_prefix
, route
->source
);
2395 source
= prefixed_source
;
2398 source
= route
->source
;
2402 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2403 if (strcmp(p
->source
->name
, source
) != 0)
2405 if (strcmp(p
->sink
->name
, sink
) != 0)
2412 dapm_mark_dirty(path
->source
, "Route removed");
2413 dapm_mark_dirty(path
->sink
, "Route removed");
2415 dapm_free_path(path
);
2417 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
2425 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2426 * @dapm: DAPM context
2427 * @route: audio routes
2428 * @num: number of routes
2430 * Connects 2 dapm widgets together via a named audio path. The sink is
2431 * the widget receiving the audio signal, whilst the source is the sender
2432 * of the audio signal.
2434 * Returns 0 for success else error. On error all resources can be freed
2435 * with a call to snd_soc_card_free().
2437 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2438 const struct snd_soc_dapm_route
*route
, int num
)
2442 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2443 for (i
= 0; i
< num
; i
++) {
2444 r
= snd_soc_dapm_add_route(dapm
, route
);
2446 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
2448 route
->control
? route
->control
: "direct",
2454 mutex_unlock(&dapm
->card
->dapm_mutex
);
2458 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2461 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2462 * @dapm: DAPM context
2463 * @route: audio routes
2464 * @num: number of routes
2466 * Removes routes from the DAPM context.
2468 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2469 const struct snd_soc_dapm_route
*route
, int num
)
2473 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2474 for (i
= 0; i
< num
; i
++) {
2475 snd_soc_dapm_del_route(dapm
, route
);
2478 mutex_unlock(&dapm
->card
->dapm_mutex
);
2482 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2484 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2485 const struct snd_soc_dapm_route
*route
)
2487 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2490 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2493 struct snd_soc_dapm_path
*path
;
2497 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
2503 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
2508 if (route
->control
|| route
->connected
)
2509 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
2510 route
->source
, route
->sink
);
2512 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2513 if (path
->sink
== sink
) {
2520 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
2521 route
->source
, route
->sink
);
2523 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
2524 count
, route
->source
, route
->sink
);
2530 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2531 * @dapm: DAPM context
2532 * @route: audio routes
2533 * @num: number of routes
2535 * Mark existing routes matching those specified in the passed array
2536 * as being weak, meaning that they are ignored for the purpose of
2537 * power decisions. The main intended use case is for sidetone paths
2538 * which couple audio between other independent paths if they are both
2539 * active in order to make the combination work better at the user
2540 * level but which aren't intended to be "used".
2542 * Note that CODEC drivers should not use this as sidetone type paths
2543 * can frequently also be used as bypass paths.
2545 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2546 const struct snd_soc_dapm_route
*route
, int num
)
2551 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2552 for (i
= 0; i
< num
; i
++) {
2553 err
= snd_soc_dapm_weak_route(dapm
, route
);
2558 mutex_unlock(&dapm
->card
->dapm_mutex
);
2562 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2565 * snd_soc_dapm_new_widgets - add new dapm widgets
2566 * @dapm: DAPM context
2568 * Checks the codec for any new dapm widgets and creates them if found.
2570 * Returns 0 for success.
2572 int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context
*dapm
)
2574 struct snd_soc_dapm_widget
*w
;
2577 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2579 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2584 if (w
->num_kcontrols
) {
2585 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2586 sizeof(struct snd_kcontrol
*),
2588 if (!w
->kcontrols
) {
2589 mutex_unlock(&dapm
->card
->dapm_mutex
);
2595 case snd_soc_dapm_switch
:
2596 case snd_soc_dapm_mixer
:
2597 case snd_soc_dapm_mixer_named_ctl
:
2600 case snd_soc_dapm_mux
:
2601 case snd_soc_dapm_virt_mux
:
2602 case snd_soc_dapm_value_mux
:
2605 case snd_soc_dapm_pga
:
2606 case snd_soc_dapm_out_drv
:
2613 /* Read the initial power state from the device */
2615 val
= soc_widget_read(w
, w
->reg
);
2616 val
&= 1 << w
->shift
;
2626 dapm_mark_dirty(w
, "new widget");
2627 dapm_debugfs_add_widget(w
);
2630 dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2631 mutex_unlock(&dapm
->card
->dapm_mutex
);
2634 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2637 * snd_soc_dapm_get_volsw - dapm mixer get callback
2638 * @kcontrol: mixer control
2639 * @ucontrol: control element information
2641 * Callback to get the value of a dapm mixer control.
2643 * Returns 0 for success.
2645 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2646 struct snd_ctl_elem_value
*ucontrol
)
2648 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2649 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2650 struct soc_mixer_control
*mc
=
2651 (struct soc_mixer_control
*)kcontrol
->private_value
;
2652 unsigned int reg
= mc
->reg
;
2653 unsigned int shift
= mc
->shift
;
2655 unsigned int mask
= (1 << fls(max
)) - 1;
2656 unsigned int invert
= mc
->invert
;
2658 if (snd_soc_volsw_is_stereo(mc
))
2659 dev_warn(widget
->dapm
->dev
,
2660 "ASoC: Control '%s' is stereo, which is not supported\n",
2663 ucontrol
->value
.integer
.value
[0] =
2664 (snd_soc_read(widget
->codec
, reg
) >> shift
) & mask
;
2666 ucontrol
->value
.integer
.value
[0] =
2667 max
- ucontrol
->value
.integer
.value
[0];
2671 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2674 * snd_soc_dapm_put_volsw - dapm mixer set callback
2675 * @kcontrol: mixer control
2676 * @ucontrol: control element information
2678 * Callback to set the value of a dapm mixer control.
2680 * Returns 0 for success.
2682 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
2683 struct snd_ctl_elem_value
*ucontrol
)
2685 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2686 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2687 struct snd_soc_codec
*codec
= widget
->codec
;
2688 struct snd_soc_card
*card
= codec
->card
;
2689 struct soc_mixer_control
*mc
=
2690 (struct soc_mixer_control
*)kcontrol
->private_value
;
2691 unsigned int reg
= mc
->reg
;
2692 unsigned int shift
= mc
->shift
;
2694 unsigned int mask
= (1 << fls(max
)) - 1;
2695 unsigned int invert
= mc
->invert
;
2697 int connect
, change
;
2698 struct snd_soc_dapm_update update
;
2701 if (snd_soc_volsw_is_stereo(mc
))
2702 dev_warn(widget
->dapm
->dev
,
2703 "ASoC: Control '%s' is stereo, which is not supported\n",
2706 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2711 mask
= mask
<< shift
;
2714 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2716 change
= snd_soc_test_bits(widget
->codec
, reg
, mask
, val
);
2718 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2719 widget
= wlist
->widgets
[wi
];
2721 widget
->value
= val
;
2723 update
.kcontrol
= kcontrol
;
2724 update
.widget
= widget
;
2728 widget
->dapm
->update
= &update
;
2730 soc_dapm_mixer_update_power(widget
, kcontrol
, connect
);
2732 widget
->dapm
->update
= NULL
;
2736 mutex_unlock(&card
->dapm_mutex
);
2739 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
2742 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2743 * @kcontrol: mixer control
2744 * @ucontrol: control element information
2746 * Callback to get the value of a dapm enumerated double mixer control.
2748 * Returns 0 for success.
2750 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2751 struct snd_ctl_elem_value
*ucontrol
)
2753 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2754 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2755 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2758 val
= snd_soc_read(widget
->codec
, e
->reg
);
2759 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & e
->mask
;
2760 if (e
->shift_l
!= e
->shift_r
)
2761 ucontrol
->value
.enumerated
.item
[1] =
2762 (val
>> e
->shift_r
) & e
->mask
;
2766 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2769 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2770 * @kcontrol: mixer control
2771 * @ucontrol: control element information
2773 * Callback to set the value of a dapm enumerated double mixer control.
2775 * Returns 0 for success.
2777 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2778 struct snd_ctl_elem_value
*ucontrol
)
2780 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2781 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2782 struct snd_soc_codec
*codec
= widget
->codec
;
2783 struct snd_soc_card
*card
= codec
->card
;
2784 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2785 unsigned int val
, mux
, change
;
2787 struct snd_soc_dapm_update update
;
2790 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2792 mux
= ucontrol
->value
.enumerated
.item
[0];
2793 val
= mux
<< e
->shift_l
;
2794 mask
= e
->mask
<< e
->shift_l
;
2795 if (e
->shift_l
!= e
->shift_r
) {
2796 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2798 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2799 mask
|= e
->mask
<< e
->shift_r
;
2802 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2804 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2806 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2807 widget
= wlist
->widgets
[wi
];
2809 widget
->value
= val
;
2811 update
.kcontrol
= kcontrol
;
2812 update
.widget
= widget
;
2813 update
.reg
= e
->reg
;
2816 widget
->dapm
->update
= &update
;
2818 soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
2820 widget
->dapm
->update
= NULL
;
2824 mutex_unlock(&card
->dapm_mutex
);
2827 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2830 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2831 * @kcontrol: mixer control
2832 * @ucontrol: control element information
2834 * Returns 0 for success.
2836 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
2837 struct snd_ctl_elem_value
*ucontrol
)
2839 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2840 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2842 ucontrol
->value
.enumerated
.item
[0] = widget
->value
;
2846 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
2849 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2850 * @kcontrol: mixer control
2851 * @ucontrol: control element information
2853 * Returns 0 for success.
2855 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
2856 struct snd_ctl_elem_value
*ucontrol
)
2858 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2859 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2860 struct snd_soc_codec
*codec
= widget
->codec
;
2861 struct snd_soc_card
*card
= codec
->card
;
2862 struct soc_enum
*e
=
2863 (struct soc_enum
*)kcontrol
->private_value
;
2867 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
2870 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2872 change
= widget
->value
!= ucontrol
->value
.enumerated
.item
[0];
2874 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2875 widget
= wlist
->widgets
[wi
];
2877 widget
->value
= ucontrol
->value
.enumerated
.item
[0];
2879 soc_dapm_mux_update_power(widget
, kcontrol
, widget
->value
, e
);
2883 mutex_unlock(&card
->dapm_mutex
);
2886 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
2889 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2891 * @kcontrol: mixer control
2892 * @ucontrol: control element information
2894 * Callback to get 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_get_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 soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2907 unsigned int reg_val
, val
, mux
;
2909 reg_val
= snd_soc_read(widget
->codec
, e
->reg
);
2910 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2911 for (mux
= 0; mux
< e
->max
; mux
++) {
2912 if (val
== e
->values
[mux
])
2915 ucontrol
->value
.enumerated
.item
[0] = mux
;
2916 if (e
->shift_l
!= e
->shift_r
) {
2917 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2918 for (mux
= 0; mux
< e
->max
; mux
++) {
2919 if (val
== e
->values
[mux
])
2922 ucontrol
->value
.enumerated
.item
[1] = mux
;
2927 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
2930 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2932 * @kcontrol: mixer control
2933 * @ucontrol: control element information
2935 * Callback to set the value of a dapm semi enumerated double mixer control.
2937 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2938 * used for handling bitfield coded enumeration for example.
2940 * Returns 0 for success.
2942 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2943 struct snd_ctl_elem_value
*ucontrol
)
2945 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2946 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2947 struct snd_soc_codec
*codec
= widget
->codec
;
2948 struct snd_soc_card
*card
= codec
->card
;
2949 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2950 unsigned int val
, mux
, change
;
2952 struct snd_soc_dapm_update update
;
2955 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2957 mux
= ucontrol
->value
.enumerated
.item
[0];
2958 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2959 mask
= e
->mask
<< e
->shift_l
;
2960 if (e
->shift_l
!= e
->shift_r
) {
2961 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2963 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2964 mask
|= e
->mask
<< e
->shift_r
;
2967 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2969 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2971 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2972 widget
= wlist
->widgets
[wi
];
2974 widget
->value
= val
;
2976 update
.kcontrol
= kcontrol
;
2977 update
.widget
= widget
;
2978 update
.reg
= e
->reg
;
2981 widget
->dapm
->update
= &update
;
2983 soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
2985 widget
->dapm
->update
= NULL
;
2989 mutex_unlock(&card
->dapm_mutex
);
2992 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
2995 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2997 * @kcontrol: mixer control
2998 * @uinfo: control element information
3000 * Callback to provide information about a pin switch control.
3002 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
3003 struct snd_ctl_elem_info
*uinfo
)
3005 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
3007 uinfo
->value
.integer
.min
= 0;
3008 uinfo
->value
.integer
.max
= 1;
3012 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
3015 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3017 * @kcontrol: mixer control
3020 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
3021 struct snd_ctl_elem_value
*ucontrol
)
3023 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3024 const char *pin
= (const char *)kcontrol
->private_value
;
3026 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3028 ucontrol
->value
.integer
.value
[0] =
3029 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
3031 mutex_unlock(&card
->dapm_mutex
);
3035 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
3038 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3040 * @kcontrol: mixer control
3043 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3044 struct snd_ctl_elem_value
*ucontrol
)
3046 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3047 const char *pin
= (const char *)kcontrol
->private_value
;
3049 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3051 if (ucontrol
->value
.integer
.value
[0])
3052 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3054 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3056 mutex_unlock(&card
->dapm_mutex
);
3058 snd_soc_dapm_sync(&card
->dapm
);
3061 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3063 static struct snd_soc_dapm_widget
*
3064 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3065 const struct snd_soc_dapm_widget
*widget
)
3067 struct snd_soc_dapm_widget
*w
;
3070 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3074 case snd_soc_dapm_regulator_supply
:
3075 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3076 if (IS_ERR(w
->regulator
)) {
3077 ret
= PTR_ERR(w
->regulator
);
3078 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3083 if (w
->invert
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3084 ret
= regulator_allow_bypass(w
->regulator
, true);
3086 dev_warn(w
->dapm
->dev
,
3087 "ASoC: Failed to unbypass %s: %d\n",
3091 case snd_soc_dapm_clock_supply
:
3092 #ifdef CONFIG_CLKDEV_LOOKUP
3093 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3094 if (IS_ERR(w
->clk
)) {
3095 ret
= PTR_ERR(w
->clk
);
3096 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3108 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
3109 w
->name
= kasprintf(GFP_KERNEL
, "%s %s",
3110 dapm
->codec
->name_prefix
, widget
->name
);
3112 w
->name
= kasprintf(GFP_KERNEL
, "%s", widget
->name
);
3114 if (w
->name
== NULL
) {
3120 case snd_soc_dapm_switch
:
3121 case snd_soc_dapm_mixer
:
3122 case snd_soc_dapm_mixer_named_ctl
:
3123 w
->power_check
= dapm_generic_check_power
;
3125 case snd_soc_dapm_mux
:
3126 case snd_soc_dapm_virt_mux
:
3127 case snd_soc_dapm_value_mux
:
3128 w
->power_check
= dapm_generic_check_power
;
3130 case snd_soc_dapm_adc
:
3131 case snd_soc_dapm_aif_out
:
3132 case snd_soc_dapm_dai_out
:
3133 w
->power_check
= dapm_adc_check_power
;
3135 case snd_soc_dapm_dac
:
3136 case snd_soc_dapm_aif_in
:
3137 case snd_soc_dapm_dai_in
:
3138 w
->power_check
= dapm_dac_check_power
;
3140 case snd_soc_dapm_pga
:
3141 case snd_soc_dapm_out_drv
:
3142 case snd_soc_dapm_input
:
3143 case snd_soc_dapm_output
:
3144 case snd_soc_dapm_micbias
:
3145 case snd_soc_dapm_spk
:
3146 case snd_soc_dapm_hp
:
3147 case snd_soc_dapm_mic
:
3148 case snd_soc_dapm_line
:
3149 case snd_soc_dapm_dai_link
:
3150 w
->power_check
= dapm_generic_check_power
;
3152 case snd_soc_dapm_supply
:
3153 case snd_soc_dapm_regulator_supply
:
3154 case snd_soc_dapm_clock_supply
:
3155 w
->power_check
= dapm_supply_check_power
;
3158 w
->power_check
= dapm_always_on_check_power
;
3163 w
->codec
= dapm
->codec
;
3164 w
->platform
= dapm
->platform
;
3165 INIT_LIST_HEAD(&w
->sources
);
3166 INIT_LIST_HEAD(&w
->sinks
);
3167 INIT_LIST_HEAD(&w
->list
);
3168 INIT_LIST_HEAD(&w
->dirty
);
3169 list_add(&w
->list
, &dapm
->card
->widgets
);
3171 /* machine layer set ups unconnected pins and insertions */
3177 * snd_soc_dapm_new_controls - create new dapm controls
3178 * @dapm: DAPM context
3179 * @widget: widget array
3180 * @num: number of widgets
3182 * Creates new DAPM controls based upon the templates.
3184 * Returns 0 for success else error.
3186 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3187 const struct snd_soc_dapm_widget
*widget
,
3190 struct snd_soc_dapm_widget
*w
;
3194 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3195 for (i
= 0; i
< num
; i
++) {
3196 w
= snd_soc_dapm_new_control(dapm
, widget
);
3199 "ASoC: Failed to create DAPM control %s\n",
3206 mutex_unlock(&dapm
->card
->dapm_mutex
);
3209 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3211 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3212 struct snd_kcontrol
*kcontrol
, int event
)
3214 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3215 struct snd_soc_dai
*source
, *sink
;
3216 const struct snd_soc_pcm_stream
*config
= w
->params
;
3217 struct snd_pcm_substream substream
;
3218 struct snd_pcm_hw_params
*params
= NULL
;
3223 BUG_ON(list_empty(&w
->sources
) || list_empty(&w
->sinks
));
3225 /* We only support a single source and sink, pick the first */
3226 source_p
= list_first_entry(&w
->sources
, struct snd_soc_dapm_path
,
3228 sink_p
= list_first_entry(&w
->sinks
, struct snd_soc_dapm_path
,
3231 BUG_ON(!source_p
|| !sink_p
);
3232 BUG_ON(!sink_p
->source
|| !source_p
->sink
);
3233 BUG_ON(!source_p
->source
|| !sink_p
->sink
);
3235 source
= source_p
->source
->priv
;
3236 sink
= sink_p
->sink
->priv
;
3238 /* Be a little careful as we don't want to overflow the mask array */
3239 if (config
->formats
) {
3240 fmt
= ffs(config
->formats
) - 1;
3242 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3247 /* Currently very limited parameter selection */
3248 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3253 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3255 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3257 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3260 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3261 = config
->channels_min
;
3262 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3263 = config
->channels_max
;
3265 memset(&substream
, 0, sizeof(substream
));
3268 case SND_SOC_DAPM_PRE_PMU
:
3269 if (source
->driver
->ops
&& source
->driver
->ops
->hw_params
) {
3270 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3271 ret
= source
->driver
->ops
->hw_params(&substream
,
3274 dev_err(source
->dev
,
3275 "ASoC: hw_params() failed: %d\n", ret
);
3280 if (sink
->driver
->ops
&& sink
->driver
->ops
->hw_params
) {
3281 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3282 ret
= sink
->driver
->ops
->hw_params(&substream
, params
,
3286 "ASoC: hw_params() failed: %d\n", ret
);
3292 case SND_SOC_DAPM_POST_PMU
:
3293 ret
= snd_soc_dai_digital_mute(sink
, 0,
3294 SNDRV_PCM_STREAM_PLAYBACK
);
3295 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3296 dev_warn(sink
->dev
, "ASoC: Failed to unmute: %d\n", ret
);
3300 case SND_SOC_DAPM_PRE_PMD
:
3301 ret
= snd_soc_dai_digital_mute(sink
, 1,
3302 SNDRV_PCM_STREAM_PLAYBACK
);
3303 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3304 dev_warn(sink
->dev
, "ASoC: Failed to mute: %d\n", ret
);
3318 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3319 const struct snd_soc_pcm_stream
*params
,
3320 struct snd_soc_dapm_widget
*source
,
3321 struct snd_soc_dapm_widget
*sink
)
3323 struct snd_soc_dapm_route routes
[2];
3324 struct snd_soc_dapm_widget
template;
3325 struct snd_soc_dapm_widget
*w
;
3329 len
= strlen(source
->name
) + strlen(sink
->name
) + 2;
3330 link_name
= devm_kzalloc(card
->dev
, len
, GFP_KERNEL
);
3333 snprintf(link_name
, len
, "%s-%s", source
->name
, sink
->name
);
3335 memset(&template, 0, sizeof(template));
3336 template.reg
= SND_SOC_NOPM
;
3337 template.id
= snd_soc_dapm_dai_link
;
3338 template.name
= link_name
;
3339 template.event
= snd_soc_dai_link_event
;
3340 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3341 SND_SOC_DAPM_PRE_PMD
;
3343 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
3345 w
= snd_soc_dapm_new_control(&card
->dapm
, &template);
3347 dev_err(card
->dev
, "ASoC: Failed to create %s widget\n",
3354 memset(&routes
, 0, sizeof(routes
));
3356 routes
[0].source
= source
->name
;
3357 routes
[0].sink
= link_name
;
3358 routes
[1].source
= link_name
;
3359 routes
[1].sink
= sink
->name
;
3361 return snd_soc_dapm_add_routes(&card
->dapm
, routes
,
3362 ARRAY_SIZE(routes
));
3365 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3366 struct snd_soc_dai
*dai
)
3368 struct snd_soc_dapm_widget
template;
3369 struct snd_soc_dapm_widget
*w
;
3371 WARN_ON(dapm
->dev
!= dai
->dev
);
3373 memset(&template, 0, sizeof(template));
3374 template.reg
= SND_SOC_NOPM
;
3376 if (dai
->driver
->playback
.stream_name
) {
3377 template.id
= snd_soc_dapm_dai_in
;
3378 template.name
= dai
->driver
->playback
.stream_name
;
3379 template.sname
= dai
->driver
->playback
.stream_name
;
3381 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3384 w
= snd_soc_dapm_new_control(dapm
, &template);
3386 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3387 dai
->driver
->playback
.stream_name
);
3391 dai
->playback_widget
= w
;
3394 if (dai
->driver
->capture
.stream_name
) {
3395 template.id
= snd_soc_dapm_dai_out
;
3396 template.name
= dai
->driver
->capture
.stream_name
;
3397 template.sname
= dai
->driver
->capture
.stream_name
;
3399 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3402 w
= snd_soc_dapm_new_control(dapm
, &template);
3404 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3405 dai
->driver
->capture
.stream_name
);
3409 dai
->capture_widget
= w
;
3415 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3417 struct snd_soc_dapm_widget
*dai_w
, *w
;
3418 struct snd_soc_dai
*dai
;
3419 struct snd_soc_dapm_route r
;
3421 memset(&r
, 0, sizeof(r
));
3423 /* For each DAI widget... */
3424 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3425 switch (dai_w
->id
) {
3426 case snd_soc_dapm_dai_in
:
3427 case snd_soc_dapm_dai_out
:
3435 /* ...find all widgets with the same stream and link them */
3436 list_for_each_entry(w
, &card
->widgets
, list
) {
3437 if (w
->dapm
!= dai_w
->dapm
)
3441 case snd_soc_dapm_dai_in
:
3442 case snd_soc_dapm_dai_out
:
3451 if (dai
->driver
->playback
.stream_name
&&
3453 dai
->driver
->playback
.stream_name
)) {
3454 r
.source
= dai
->playback_widget
->name
;
3456 dev_dbg(dai
->dev
, "%s -> %s\n",
3459 snd_soc_dapm_add_route(w
->dapm
, &r
);
3462 if (dai
->driver
->capture
.stream_name
&&
3464 dai
->driver
->capture
.stream_name
)) {
3466 r
.sink
= dai
->capture_widget
->name
;
3467 dev_dbg(dai
->dev
, "%s -> %s\n",
3470 snd_soc_dapm_add_route(w
->dapm
, &r
);
3478 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3482 struct snd_soc_dapm_widget
*w_cpu
, *w_codec
;
3483 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3484 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
3486 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
3487 w_cpu
= cpu_dai
->playback_widget
;
3488 w_codec
= codec_dai
->playback_widget
;
3490 w_cpu
= cpu_dai
->capture_widget
;
3491 w_codec
= codec_dai
->capture_widget
;
3496 dapm_mark_dirty(w_cpu
, "stream event");
3499 case SND_SOC_DAPM_STREAM_START
:
3502 case SND_SOC_DAPM_STREAM_STOP
:
3505 case SND_SOC_DAPM_STREAM_SUSPEND
:
3506 case SND_SOC_DAPM_STREAM_RESUME
:
3507 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3508 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3515 dapm_mark_dirty(w_codec
, "stream event");
3518 case SND_SOC_DAPM_STREAM_START
:
3519 w_codec
->active
= 1;
3521 case SND_SOC_DAPM_STREAM_STOP
:
3522 w_codec
->active
= 0;
3524 case SND_SOC_DAPM_STREAM_SUSPEND
:
3525 case SND_SOC_DAPM_STREAM_RESUME
:
3526 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3527 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3532 dapm_power_widgets(&rtd
->card
->dapm
, event
);
3536 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3537 * @rtd: PCM runtime data
3538 * @stream: stream name
3539 * @event: stream event
3541 * Sends a stream event to the dapm core. The core then makes any
3542 * necessary widget power changes.
3544 * Returns 0 for success else error.
3546 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3549 struct snd_soc_card
*card
= rtd
->card
;
3551 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3552 soc_dapm_stream_event(rtd
, stream
, event
);
3553 mutex_unlock(&card
->dapm_mutex
);
3557 * snd_soc_dapm_enable_pin - enable pin.
3558 * @dapm: DAPM context
3561 * Enables input/output pin and its parents or children widgets iff there is
3562 * a valid audio route and active audio stream.
3563 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3564 * do any widget power switching.
3566 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3568 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
3570 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
3573 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3574 * @dapm: DAPM context
3577 * Enables input/output pin regardless of any other state. This is
3578 * intended for use with microphone bias supplies used in microphone
3581 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3582 * do any widget power switching.
3584 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
3587 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3590 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3594 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
3597 dapm_mark_dirty(w
, "force enable");
3601 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
3604 * snd_soc_dapm_disable_pin - disable pin.
3605 * @dapm: DAPM context
3608 * Disables input/output pin and its parents or children widgets.
3609 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3610 * do any widget power switching.
3612 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
3615 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3617 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
3620 * snd_soc_dapm_nc_pin - permanently disable pin.
3621 * @dapm: DAPM context
3624 * Marks the specified pin as being not connected, disabling it along
3625 * any parent or child widgets. At present this is identical to
3626 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3627 * additional things such as disabling controls which only affect
3628 * paths through the pin.
3630 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3631 * do any widget power switching.
3633 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3635 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3637 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
3640 * snd_soc_dapm_get_pin_status - get audio pin status
3641 * @dapm: DAPM context
3642 * @pin: audio signal pin endpoint (or start point)
3644 * Get audio pin status - connected or disconnected.
3646 * Returns 1 for connected otherwise 0.
3648 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
3651 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3654 return w
->connected
;
3658 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
3661 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3662 * @dapm: DAPM context
3663 * @pin: audio signal pin endpoint (or start point)
3665 * Mark the given endpoint or pin as ignoring suspend. When the
3666 * system is disabled a path between two endpoints flagged as ignoring
3667 * suspend will not be disabled. The path must already be enabled via
3668 * normal means at suspend time, it will not be turned on if it was not
3671 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
3674 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
3677 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3681 w
->ignore_suspend
= 1;
3685 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
3687 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card
*card
,
3688 struct snd_soc_dapm_widget
*w
)
3690 struct snd_soc_dapm_path
*p
;
3692 list_for_each_entry(p
, &card
->paths
, list
) {
3693 if ((p
->source
== w
) || (p
->sink
== w
)) {
3695 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3696 p
->source
->name
, p
->source
->id
, p
->source
->dapm
,
3697 p
->sink
->name
, p
->sink
->id
, p
->sink
->dapm
);
3699 /* Connected to something other than the codec */
3700 if (p
->source
->dapm
!= p
->sink
->dapm
)
3703 * Loopback connection from codec external pin to
3704 * codec external pin
3706 if (p
->sink
->id
== snd_soc_dapm_input
) {
3707 switch (p
->source
->id
) {
3708 case snd_soc_dapm_output
:
3709 case snd_soc_dapm_micbias
:
3722 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3723 * @codec: The codec whose pins should be processed
3725 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3726 * which are unused. Pins are used if they are connected externally to the
3727 * codec, whether that be to some other device, or a loop-back connection to
3730 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec
*codec
)
3732 struct snd_soc_card
*card
= codec
->card
;
3733 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
3734 struct snd_soc_dapm_widget
*w
;
3736 dev_dbg(codec
->dev
, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3737 &card
->dapm
, &codec
->dapm
);
3739 list_for_each_entry(w
, &card
->widgets
, list
) {
3740 if (w
->dapm
!= dapm
)
3743 case snd_soc_dapm_input
:
3744 case snd_soc_dapm_output
:
3745 case snd_soc_dapm_micbias
:
3746 dev_dbg(codec
->dev
, "ASoC: Auto NC: Checking widget %s\n",
3748 if (!snd_soc_dapm_widget_in_card_paths(card
, w
)) {
3750 "... Not in map; disabling\n");
3751 snd_soc_dapm_nc_pin(dapm
, w
->name
);
3761 * snd_soc_dapm_free - free dapm resources
3762 * @dapm: DAPM context
3764 * Free all dapm widgets and resources.
3766 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
3768 snd_soc_dapm_sys_remove(dapm
->dev
);
3769 dapm_debugfs_cleanup(dapm
);
3770 dapm_free_widgets(dapm
);
3771 list_del(&dapm
->list
);
3773 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
3775 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context
*dapm
)
3777 struct snd_soc_card
*card
= dapm
->card
;
3778 struct snd_soc_dapm_widget
*w
;
3779 LIST_HEAD(down_list
);
3782 mutex_lock(&card
->dapm_mutex
);
3784 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
3785 if (w
->dapm
!= dapm
)
3788 dapm_seq_insert(w
, &down_list
, false);
3794 /* If there were no widgets to power down we're already in
3798 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
3799 snd_soc_dapm_set_bias_level(dapm
,
3800 SND_SOC_BIAS_PREPARE
);
3801 dapm_seq_run(dapm
, &down_list
, 0, false);
3802 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
3803 snd_soc_dapm_set_bias_level(dapm
,
3804 SND_SOC_BIAS_STANDBY
);
3807 mutex_unlock(&card
->dapm_mutex
);
3811 * snd_soc_dapm_shutdown - callback for system shutdown
3813 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
3815 struct snd_soc_codec
*codec
;
3817 list_for_each_entry(codec
, &card
->codec_dev_list
, card_list
) {
3818 soc_dapm_shutdown_codec(&codec
->dapm
);
3819 if (codec
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
3820 snd_soc_dapm_set_bias_level(&codec
->dapm
,
3825 /* Module information */
3826 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3827 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3828 MODULE_LICENSE("GPL");