2 * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * o Changes power status of internal codec blocks depending on the
14 * dynamic configuration of codec internal audio paths and active
16 * o Platform power domain - can support external components i.e. amps and
17 * mic/headphone insertion events.
18 * o Automatic Mic Bias support
19 * o Jack insertion power event initiation - e.g. hp insertion will enable
21 * o Delayed power down of audio subsystem to reduce pops between a quick
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/init.h>
29 #include <linux/async.h>
30 #include <linux/delay.h>
32 #include <linux/bitops.h>
33 #include <linux/platform_device.h>
34 #include <linux/jiffies.h>
35 #include <linux/debugfs.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/regulator/consumer.h>
38 #include <linux/clk.h>
39 #include <linux/slab.h>
40 #include <sound/core.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/initval.h>
46 #include <trace/events/asoc.h>
48 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
50 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
51 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
53 int (*connected
)(struct snd_soc_dapm_widget
*source
,
54 struct snd_soc_dapm_widget
*sink
));
55 static struct snd_soc_dapm_widget
*
56 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
57 const struct snd_soc_dapm_widget
*widget
);
59 /* dapm power sequences - make this per codec in the future */
60 static int dapm_up_seq
[] = {
61 [snd_soc_dapm_pre
] = 0,
62 [snd_soc_dapm_regulator_supply
] = 1,
63 [snd_soc_dapm_clock_supply
] = 1,
64 [snd_soc_dapm_supply
] = 2,
65 [snd_soc_dapm_micbias
] = 3,
66 [snd_soc_dapm_dai_link
] = 2,
67 [snd_soc_dapm_dai_in
] = 4,
68 [snd_soc_dapm_dai_out
] = 4,
69 [snd_soc_dapm_aif_in
] = 4,
70 [snd_soc_dapm_aif_out
] = 4,
71 [snd_soc_dapm_mic
] = 5,
72 [snd_soc_dapm_mux
] = 6,
73 [snd_soc_dapm_dac
] = 7,
74 [snd_soc_dapm_switch
] = 8,
75 [snd_soc_dapm_mixer
] = 8,
76 [snd_soc_dapm_mixer_named_ctl
] = 8,
77 [snd_soc_dapm_pga
] = 9,
78 [snd_soc_dapm_adc
] = 10,
79 [snd_soc_dapm_out_drv
] = 11,
80 [snd_soc_dapm_hp
] = 11,
81 [snd_soc_dapm_spk
] = 11,
82 [snd_soc_dapm_line
] = 11,
83 [snd_soc_dapm_kcontrol
] = 12,
84 [snd_soc_dapm_post
] = 13,
87 static int dapm_down_seq
[] = {
88 [snd_soc_dapm_pre
] = 0,
89 [snd_soc_dapm_kcontrol
] = 1,
90 [snd_soc_dapm_adc
] = 2,
91 [snd_soc_dapm_hp
] = 3,
92 [snd_soc_dapm_spk
] = 3,
93 [snd_soc_dapm_line
] = 3,
94 [snd_soc_dapm_out_drv
] = 3,
95 [snd_soc_dapm_pga
] = 4,
96 [snd_soc_dapm_switch
] = 5,
97 [snd_soc_dapm_mixer_named_ctl
] = 5,
98 [snd_soc_dapm_mixer
] = 5,
99 [snd_soc_dapm_dac
] = 6,
100 [snd_soc_dapm_mic
] = 7,
101 [snd_soc_dapm_micbias
] = 8,
102 [snd_soc_dapm_mux
] = 9,
103 [snd_soc_dapm_aif_in
] = 10,
104 [snd_soc_dapm_aif_out
] = 10,
105 [snd_soc_dapm_dai_in
] = 10,
106 [snd_soc_dapm_dai_out
] = 10,
107 [snd_soc_dapm_dai_link
] = 11,
108 [snd_soc_dapm_supply
] = 12,
109 [snd_soc_dapm_clock_supply
] = 13,
110 [snd_soc_dapm_regulator_supply
] = 13,
111 [snd_soc_dapm_post
] = 14,
114 static void dapm_assert_locked(struct snd_soc_dapm_context
*dapm
)
116 if (dapm
->card
&& dapm
->card
->instantiated
)
117 lockdep_assert_held(&dapm
->card
->dapm_mutex
);
120 static void pop_wait(u32 pop_time
)
123 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
126 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
134 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
139 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
140 dev_info(dev
, "%s", buf
);
146 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
148 return !list_empty(&w
->dirty
);
151 static void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
153 dapm_assert_locked(w
->dapm
);
155 if (!dapm_dirty_widget(w
)) {
156 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
158 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
162 void dapm_mark_io_dirty(struct snd_soc_dapm_context
*dapm
)
164 struct snd_soc_card
*card
= dapm
->card
;
165 struct snd_soc_dapm_widget
*w
;
167 mutex_lock(&card
->dapm_mutex
);
169 list_for_each_entry(w
, &card
->widgets
, list
) {
171 case snd_soc_dapm_input
:
172 case snd_soc_dapm_output
:
173 dapm_mark_dirty(w
, "Rechecking inputs and outputs");
180 mutex_unlock(&card
->dapm_mutex
);
182 EXPORT_SYMBOL_GPL(dapm_mark_io_dirty
);
184 /* create a new dapm widget */
185 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
186 const struct snd_soc_dapm_widget
*_widget
)
188 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
191 struct dapm_kcontrol_data
{
193 struct snd_soc_dapm_widget
*widget
;
194 struct list_head paths
;
195 struct snd_soc_dapm_widget_list
*wlist
;
198 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget
*widget
,
199 struct snd_kcontrol
*kcontrol
)
201 struct dapm_kcontrol_data
*data
;
202 struct soc_mixer_control
*mc
;
204 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
206 dev_err(widget
->dapm
->dev
,
207 "ASoC: can't allocate kcontrol data for %s\n",
212 INIT_LIST_HEAD(&data
->paths
);
214 switch (widget
->id
) {
215 case snd_soc_dapm_switch
:
216 case snd_soc_dapm_mixer
:
217 case snd_soc_dapm_mixer_named_ctl
:
218 mc
= (struct soc_mixer_control
*)kcontrol
->private_value
;
220 if (mc
->autodisable
) {
221 struct snd_soc_dapm_widget
template;
223 memset(&template, 0, sizeof(template));
224 template.reg
= mc
->reg
;
225 template.mask
= (1 << fls(mc
->max
)) - 1;
226 template.shift
= mc
->shift
;
228 template.off_val
= mc
->max
;
230 template.off_val
= 0;
231 template.on_val
= template.off_val
;
232 template.id
= snd_soc_dapm_kcontrol
;
233 template.name
= kcontrol
->id
.name
;
235 data
->value
= template.on_val
;
237 data
->widget
= snd_soc_dapm_new_control(widget
->dapm
,
249 kcontrol
->private_data
= data
;
254 static void dapm_kcontrol_free(struct snd_kcontrol
*kctl
)
256 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kctl
);
261 static struct snd_soc_dapm_widget_list
*dapm_kcontrol_get_wlist(
262 const struct snd_kcontrol
*kcontrol
)
264 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
269 static int dapm_kcontrol_add_widget(struct snd_kcontrol
*kcontrol
,
270 struct snd_soc_dapm_widget
*widget
)
272 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
273 struct snd_soc_dapm_widget_list
*new_wlist
;
277 n
= data
->wlist
->num_widgets
+ 1;
281 new_wlist
= krealloc(data
->wlist
,
282 sizeof(*new_wlist
) + sizeof(widget
) * n
, GFP_KERNEL
);
286 new_wlist
->widgets
[n
- 1] = widget
;
287 new_wlist
->num_widgets
= n
;
289 data
->wlist
= new_wlist
;
294 static void dapm_kcontrol_add_path(const struct snd_kcontrol
*kcontrol
,
295 struct snd_soc_dapm_path
*path
)
297 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
299 list_add_tail(&path
->list_kcontrol
, &data
->paths
);
302 snd_soc_dapm_add_path(data
->widget
->dapm
, data
->widget
,
303 path
->source
, NULL
, NULL
);
307 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol
*kcontrol
)
309 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
314 return data
->widget
->power
;
317 static struct list_head
*dapm_kcontrol_get_path_list(
318 const struct snd_kcontrol
*kcontrol
)
320 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
325 #define dapm_kcontrol_for_each_path(path, kcontrol) \
326 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
329 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol
*kcontrol
)
331 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
335 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value
);
337 static bool dapm_kcontrol_set_value(const struct snd_kcontrol
*kcontrol
,
340 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
342 if (data
->value
== value
)
346 data
->widget
->on_val
= value
;
354 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
356 * @kcontrol: The kcontrol
358 * Note: This function must only be used on kcontrols that are known to have
359 * been registered for a CODEC. Otherwise the behaviour is undefined.
361 struct snd_soc_dapm_context
*snd_soc_dapm_kcontrol_dapm(
362 struct snd_kcontrol
*kcontrol
)
364 return dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0]->dapm
;
366 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm
);
369 * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
370 * @kcontrol: The kcontrol
372 struct snd_soc_codec
*snd_soc_dapm_kcontrol_codec(struct snd_kcontrol
*kcontrol
)
374 return snd_soc_dapm_to_codec(snd_soc_dapm_kcontrol_dapm(kcontrol
));
376 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec
);
378 static void dapm_reset(struct snd_soc_card
*card
)
380 struct snd_soc_dapm_widget
*w
;
382 lockdep_assert_held(&card
->dapm_mutex
);
384 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
386 list_for_each_entry(w
, &card
->widgets
, list
) {
387 w
->new_power
= w
->power
;
388 w
->power_checked
= false;
394 static const char *soc_dapm_prefix(struct snd_soc_dapm_context
*dapm
)
396 if (!dapm
->component
)
398 return dapm
->component
->name_prefix
;
401 static int soc_dapm_read(struct snd_soc_dapm_context
*dapm
, int reg
,
404 if (!dapm
->component
)
406 return snd_soc_component_read(dapm
->component
, reg
, value
);
409 static int soc_dapm_update_bits(struct snd_soc_dapm_context
*dapm
,
410 int reg
, unsigned int mask
, unsigned int value
)
412 if (!dapm
->component
)
414 return snd_soc_component_update_bits_async(dapm
->component
, reg
,
418 static int soc_dapm_test_bits(struct snd_soc_dapm_context
*dapm
,
419 int reg
, unsigned int mask
, unsigned int value
)
421 if (!dapm
->component
)
423 return snd_soc_component_test_bits(dapm
->component
, reg
, mask
, value
);
426 static void soc_dapm_async_complete(struct snd_soc_dapm_context
*dapm
)
429 snd_soc_component_async_complete(dapm
->component
);
433 * snd_soc_dapm_set_bias_level - set the bias level for the system
434 * @dapm: DAPM context
435 * @level: level to configure
437 * Configure the bias (power) levels for the SoC audio device.
439 * Returns 0 for success else error.
441 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
442 enum snd_soc_bias_level level
)
444 struct snd_soc_card
*card
= dapm
->card
;
447 trace_snd_soc_bias_level_start(card
, level
);
449 if (card
&& card
->set_bias_level
)
450 ret
= card
->set_bias_level(card
, dapm
, level
);
454 if (dapm
->set_bias_level
)
455 ret
= dapm
->set_bias_level(dapm
, level
);
456 else if (!card
|| dapm
!= &card
->dapm
)
457 dapm
->bias_level
= level
;
462 if (card
&& card
->set_bias_level_post
)
463 ret
= card
->set_bias_level_post(card
, dapm
, level
);
465 trace_snd_soc_bias_level_done(card
, level
);
470 /* connect mux widget to its interconnecting audio paths */
471 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
472 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
473 struct snd_soc_dapm_path
*path
, const char *control_name
,
474 const struct snd_kcontrol_new
*kcontrol
)
476 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
477 unsigned int val
, item
;
480 if (e
->reg
!= SND_SOC_NOPM
) {
481 soc_dapm_read(dapm
, e
->reg
, &val
);
482 val
= (val
>> e
->shift_l
) & e
->mask
;
483 item
= snd_soc_enum_val_to_item(e
, val
);
485 /* since a virtual mux has no backing registers to
486 * decide which path to connect, it will try to match
487 * with the first enumeration. This is to ensure
488 * that the default mux choice (the first) will be
489 * correctly powered up during initialization.
494 for (i
= 0; i
< e
->items
; i
++) {
495 if (!(strcmp(control_name
, e
->texts
[i
]))) {
496 list_add(&path
->list
, &dapm
->card
->paths
);
497 list_add(&path
->list_sink
, &dest
->sources
);
498 list_add(&path
->list_source
, &src
->sinks
);
499 path
->name
= (char*)e
->texts
[i
];
511 /* set up initial codec paths */
512 static void dapm_set_mixer_path_status(struct snd_soc_dapm_widget
*w
,
513 struct snd_soc_dapm_path
*p
, int i
)
515 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
516 w
->kcontrol_news
[i
].private_value
;
517 unsigned int reg
= mc
->reg
;
518 unsigned int shift
= mc
->shift
;
519 unsigned int max
= mc
->max
;
520 unsigned int mask
= (1 << fls(max
)) - 1;
521 unsigned int invert
= mc
->invert
;
524 if (reg
!= SND_SOC_NOPM
) {
525 soc_dapm_read(w
->dapm
, reg
, &val
);
526 val
= (val
>> shift
) & mask
;
535 /* connect mixer widget to its interconnecting audio paths */
536 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
537 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
538 struct snd_soc_dapm_path
*path
, const char *control_name
)
542 /* search for mixer kcontrol */
543 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
544 if (!strcmp(control_name
, dest
->kcontrol_news
[i
].name
)) {
545 list_add(&path
->list
, &dapm
->card
->paths
);
546 list_add(&path
->list_sink
, &dest
->sources
);
547 list_add(&path
->list_source
, &src
->sinks
);
548 path
->name
= dest
->kcontrol_news
[i
].name
;
549 dapm_set_mixer_path_status(dest
, path
, i
);
556 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
557 struct snd_soc_dapm_widget
*kcontrolw
,
558 const struct snd_kcontrol_new
*kcontrol_new
,
559 struct snd_kcontrol
**kcontrol
)
561 struct snd_soc_dapm_widget
*w
;
566 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
567 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
569 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
570 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
572 *kcontrol
= w
->kcontrols
[i
];
582 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
583 * create it. Either way, add the widget into the control's widget list
585 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget
*w
,
588 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
589 struct snd_card
*card
= dapm
->card
->snd_card
;
593 struct snd_kcontrol
*kcontrol
;
594 bool wname_in_long_name
, kcname_in_long_name
;
595 char *long_name
= NULL
;
599 prefix
= soc_dapm_prefix(dapm
);
601 prefix_len
= strlen(prefix
) + 1;
605 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[kci
],
610 wname_in_long_name
= false;
611 kcname_in_long_name
= true;
614 case snd_soc_dapm_switch
:
615 case snd_soc_dapm_mixer
:
616 wname_in_long_name
= true;
617 kcname_in_long_name
= true;
619 case snd_soc_dapm_mixer_named_ctl
:
620 wname_in_long_name
= false;
621 kcname_in_long_name
= true;
623 case snd_soc_dapm_mux
:
624 wname_in_long_name
= true;
625 kcname_in_long_name
= false;
632 if (wname_in_long_name
&& kcname_in_long_name
) {
634 * The control will get a prefix from the control
635 * creation process but we're also using the same
636 * prefix for widgets so cut the prefix off the
637 * front of the widget name.
639 long_name
= kasprintf(GFP_KERNEL
, "%s %s",
640 w
->name
+ prefix_len
,
641 w
->kcontrol_news
[kci
].name
);
642 if (long_name
== NULL
)
646 } else if (wname_in_long_name
) {
648 name
= w
->name
+ prefix_len
;
651 name
= w
->kcontrol_news
[kci
].name
;
654 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[kci
], NULL
, name
,
661 kcontrol
->private_free
= dapm_kcontrol_free
;
663 ret
= dapm_kcontrol_data_alloc(w
, kcontrol
);
665 snd_ctl_free_one(kcontrol
);
669 ret
= snd_ctl_add(card
, kcontrol
);
672 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
678 ret
= dapm_kcontrol_add_widget(kcontrol
, w
);
680 w
->kcontrols
[kci
] = kcontrol
;
688 /* create new dapm mixer control */
689 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
692 struct snd_soc_dapm_path
*path
;
695 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
697 list_for_each_entry(path
, &w
->sources
, list_sink
) {
698 /* mixer/mux paths name must match control name */
699 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
702 if (w
->kcontrols
[i
]) {
703 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
707 ret
= dapm_create_or_share_mixmux_kcontrol(w
, i
);
711 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
718 /* create new dapm mux control */
719 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
721 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
722 struct snd_soc_dapm_path
*path
;
725 if (w
->num_kcontrols
!= 1) {
727 "ASoC: mux %s has incorrect number of controls\n",
732 if (list_empty(&w
->sources
)) {
733 dev_err(dapm
->dev
, "ASoC: mux %s has no paths\n", w
->name
);
737 ret
= dapm_create_or_share_mixmux_kcontrol(w
, 0);
741 list_for_each_entry(path
, &w
->sources
, list_sink
)
742 dapm_kcontrol_add_path(w
->kcontrols
[0], path
);
747 /* create new dapm volume control */
748 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
750 if (w
->num_kcontrols
)
751 dev_err(w
->dapm
->dev
,
752 "ASoC: PGA controls not supported: '%s'\n", w
->name
);
757 /* reset 'walked' bit for each dapm path */
758 static void dapm_clear_walk_output(struct snd_soc_dapm_context
*dapm
,
759 struct list_head
*sink
)
761 struct snd_soc_dapm_path
*p
;
763 list_for_each_entry(p
, sink
, list_source
) {
766 dapm_clear_walk_output(dapm
, &p
->sink
->sinks
);
771 static void dapm_clear_walk_input(struct snd_soc_dapm_context
*dapm
,
772 struct list_head
*source
)
774 struct snd_soc_dapm_path
*p
;
776 list_for_each_entry(p
, source
, list_sink
) {
779 dapm_clear_walk_input(dapm
, &p
->source
->sources
);
785 /* We implement power down on suspend by checking the power state of
786 * the ALSA card - when we are suspending the ALSA state for the card
789 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
791 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
794 case SNDRV_CTL_POWER_D3hot
:
795 case SNDRV_CTL_POWER_D3cold
:
796 if (widget
->ignore_suspend
)
797 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
799 return widget
->ignore_suspend
;
805 /* add widget to list if it's not already in the list */
806 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list
**list
,
807 struct snd_soc_dapm_widget
*w
)
809 struct snd_soc_dapm_widget_list
*wlist
;
810 int wlistsize
, wlistentries
, i
;
817 /* is this widget already in the list */
818 for (i
= 0; i
< wlist
->num_widgets
; i
++) {
819 if (wlist
->widgets
[i
] == w
)
823 /* allocate some new space */
824 wlistentries
= wlist
->num_widgets
+ 1;
825 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
826 wlistentries
* sizeof(struct snd_soc_dapm_widget
*);
827 *list
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
829 dev_err(w
->dapm
->dev
, "ASoC: can't allocate widget list for %s\n",
835 /* insert the widget */
836 dev_dbg(w
->dapm
->dev
, "ASoC: added %s in widget list pos %d\n",
837 w
->name
, wlist
->num_widgets
);
839 wlist
->widgets
[wlist
->num_widgets
] = w
;
840 wlist
->num_widgets
++;
845 * Recursively check for a completed path to an active or physically connected
846 * output widget. Returns number of complete paths.
848 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
849 struct snd_soc_dapm_widget_list
**list
)
851 struct snd_soc_dapm_path
*path
;
854 if (widget
->outputs
>= 0)
855 return widget
->outputs
;
857 DAPM_UPDATE_STAT(widget
, path_checks
);
859 switch (widget
->id
) {
860 case snd_soc_dapm_supply
:
861 case snd_soc_dapm_regulator_supply
:
862 case snd_soc_dapm_clock_supply
:
863 case snd_soc_dapm_kcontrol
:
869 switch (widget
->id
) {
870 case snd_soc_dapm_adc
:
871 case snd_soc_dapm_aif_out
:
872 case snd_soc_dapm_dai_out
:
873 if (widget
->active
) {
874 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
875 return widget
->outputs
;
881 if (widget
->connected
) {
882 /* connected pin ? */
883 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
) {
884 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
885 return widget
->outputs
;
888 /* connected jack or spk ? */
889 if (widget
->id
== snd_soc_dapm_hp
||
890 widget
->id
== snd_soc_dapm_spk
||
891 (widget
->id
== snd_soc_dapm_line
&&
892 !list_empty(&widget
->sources
))) {
893 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
894 return widget
->outputs
;
898 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
899 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
910 trace_snd_soc_dapm_output_path(widget
, path
);
912 if (path
->sink
&& path
->connect
) {
916 /* do we need to add this widget to the list ? */
919 err
= dapm_list_add_widget(list
, path
->sink
);
921 dev_err(widget
->dapm
->dev
,
922 "ASoC: could not add widget %s\n",
929 con
+= is_connected_output_ep(path
->sink
, list
);
935 widget
->outputs
= con
;
941 * Recursively check for a completed path to an active or physically connected
942 * input widget. Returns number of complete paths.
944 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
945 struct snd_soc_dapm_widget_list
**list
)
947 struct snd_soc_dapm_path
*path
;
950 if (widget
->inputs
>= 0)
951 return widget
->inputs
;
953 DAPM_UPDATE_STAT(widget
, path_checks
);
955 switch (widget
->id
) {
956 case snd_soc_dapm_supply
:
957 case snd_soc_dapm_regulator_supply
:
958 case snd_soc_dapm_clock_supply
:
959 case snd_soc_dapm_kcontrol
:
965 /* active stream ? */
966 switch (widget
->id
) {
967 case snd_soc_dapm_dac
:
968 case snd_soc_dapm_aif_in
:
969 case snd_soc_dapm_dai_in
:
970 if (widget
->active
) {
971 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
972 return widget
->inputs
;
978 if (widget
->connected
) {
979 /* connected pin ? */
980 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
) {
981 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
982 return widget
->inputs
;
985 /* connected VMID/Bias for lower pops */
986 if (widget
->id
== snd_soc_dapm_vmid
) {
987 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
988 return widget
->inputs
;
991 /* connected jack ? */
992 if (widget
->id
== snd_soc_dapm_mic
||
993 (widget
->id
== snd_soc_dapm_line
&&
994 !list_empty(&widget
->sinks
))) {
995 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
996 return widget
->inputs
;
999 /* signal generator */
1000 if (widget
->id
== snd_soc_dapm_siggen
) {
1001 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
1002 return widget
->inputs
;
1006 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
1007 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
1018 trace_snd_soc_dapm_input_path(widget
, path
);
1020 if (path
->source
&& path
->connect
) {
1024 /* do we need to add this widget to the list ? */
1027 err
= dapm_list_add_widget(list
, path
->source
);
1029 dev_err(widget
->dapm
->dev
,
1030 "ASoC: could not add widget %s\n",
1037 con
+= is_connected_input_ep(path
->source
, list
);
1043 widget
->inputs
= con
;
1049 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1050 * @dai: the soc DAI.
1051 * @stream: stream direction.
1052 * @list: list of active widgets for this stream.
1054 * Queries DAPM graph as to whether an valid audio stream path exists for
1055 * the initial stream specified by name. This takes into account
1056 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1058 * Returns the number of valid paths or negative error.
1060 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
1061 struct snd_soc_dapm_widget_list
**list
)
1063 struct snd_soc_card
*card
= dai
->card
;
1066 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1069 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
1070 paths
= is_connected_output_ep(dai
->playback_widget
, list
);
1071 dapm_clear_walk_output(&card
->dapm
,
1072 &dai
->playback_widget
->sinks
);
1074 paths
= is_connected_input_ep(dai
->capture_widget
, list
);
1075 dapm_clear_walk_input(&card
->dapm
,
1076 &dai
->capture_widget
->sources
);
1079 trace_snd_soc_dapm_connected(paths
, stream
);
1080 mutex_unlock(&card
->dapm_mutex
);
1086 * Handler for regulator supply widget.
1088 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1089 struct snd_kcontrol
*kcontrol
, int event
)
1093 soc_dapm_async_complete(w
->dapm
);
1095 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1096 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1097 ret
= regulator_allow_bypass(w
->regulator
, false);
1099 dev_warn(w
->dapm
->dev
,
1100 "ASoC: Failed to unbypass %s: %d\n",
1104 return regulator_enable(w
->regulator
);
1106 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1107 ret
= regulator_allow_bypass(w
->regulator
, true);
1109 dev_warn(w
->dapm
->dev
,
1110 "ASoC: Failed to bypass %s: %d\n",
1114 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1117 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1120 * Handler for clock supply widget.
1122 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1123 struct snd_kcontrol
*kcontrol
, int event
)
1128 soc_dapm_async_complete(w
->dapm
);
1130 #ifdef CONFIG_HAVE_CLK
1131 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1132 return clk_prepare_enable(w
->clk
);
1134 clk_disable_unprepare(w
->clk
);
1140 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1142 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1144 if (w
->power_checked
)
1145 return w
->new_power
;
1150 w
->new_power
= w
->power_check(w
);
1152 w
->power_checked
= true;
1154 return w
->new_power
;
1157 /* Generic check to see if a widget should be powered.
1159 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1163 DAPM_UPDATE_STAT(w
, power_checks
);
1165 in
= is_connected_input_ep(w
, NULL
);
1166 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1167 out
= is_connected_output_ep(w
, NULL
);
1168 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1169 return out
!= 0 && in
!= 0;
1172 /* Check to see if an ADC has power */
1173 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
1177 DAPM_UPDATE_STAT(w
, power_checks
);
1180 in
= is_connected_input_ep(w
, NULL
);
1181 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1184 return dapm_generic_check_power(w
);
1188 /* Check to see if a DAC has power */
1189 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
1193 DAPM_UPDATE_STAT(w
, power_checks
);
1196 out
= is_connected_output_ep(w
, NULL
);
1197 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1200 return dapm_generic_check_power(w
);
1204 /* Check to see if a power supply is needed */
1205 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1207 struct snd_soc_dapm_path
*path
;
1209 DAPM_UPDATE_STAT(w
, power_checks
);
1211 /* Check if one of our outputs is connected */
1212 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1213 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1218 if (path
->connected
&&
1219 !path
->connected(path
->source
, path
->sink
))
1225 if (dapm_widget_power_check(path
->sink
))
1232 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1237 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1238 struct snd_soc_dapm_widget
*b
,
1246 sort
= dapm_down_seq
;
1248 if (sort
[a
->id
] != sort
[b
->id
])
1249 return sort
[a
->id
] - sort
[b
->id
];
1250 if (a
->subseq
!= b
->subseq
) {
1252 return a
->subseq
- b
->subseq
;
1254 return b
->subseq
- a
->subseq
;
1256 if (a
->reg
!= b
->reg
)
1257 return a
->reg
- b
->reg
;
1258 if (a
->dapm
!= b
->dapm
)
1259 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1264 /* Insert a widget in order into a DAPM power sequence. */
1265 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1266 struct list_head
*list
,
1269 struct snd_soc_dapm_widget
*w
;
1271 list_for_each_entry(w
, list
, power_list
)
1272 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1273 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1277 list_add_tail(&new_widget
->power_list
, list
);
1280 static void dapm_seq_check_event(struct snd_soc_card
*card
,
1281 struct snd_soc_dapm_widget
*w
, int event
)
1283 const char *ev_name
;
1287 case SND_SOC_DAPM_PRE_PMU
:
1288 ev_name
= "PRE_PMU";
1291 case SND_SOC_DAPM_POST_PMU
:
1292 ev_name
= "POST_PMU";
1295 case SND_SOC_DAPM_PRE_PMD
:
1296 ev_name
= "PRE_PMD";
1299 case SND_SOC_DAPM_POST_PMD
:
1300 ev_name
= "POST_PMD";
1303 case SND_SOC_DAPM_WILL_PMU
:
1304 ev_name
= "WILL_PMU";
1307 case SND_SOC_DAPM_WILL_PMD
:
1308 ev_name
= "WILL_PMD";
1312 WARN(1, "Unknown event %d\n", event
);
1316 if (w
->new_power
!= power
)
1319 if (w
->event
&& (w
->event_flags
& event
)) {
1320 pop_dbg(w
->dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1322 soc_dapm_async_complete(w
->dapm
);
1323 trace_snd_soc_dapm_widget_event_start(w
, event
);
1324 ret
= w
->event(w
, NULL
, event
);
1325 trace_snd_soc_dapm_widget_event_done(w
, event
);
1327 dev_err(w
->dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1328 ev_name
, w
->name
, ret
);
1332 /* Apply the coalesced changes from a DAPM sequence */
1333 static void dapm_seq_run_coalesced(struct snd_soc_card
*card
,
1334 struct list_head
*pending
)
1336 struct snd_soc_dapm_context
*dapm
;
1337 struct snd_soc_dapm_widget
*w
;
1339 unsigned int value
= 0;
1340 unsigned int mask
= 0;
1342 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
, power_list
);
1346 list_for_each_entry(w
, pending
, power_list
) {
1347 WARN_ON(reg
!= w
->reg
|| dapm
!= w
->dapm
);
1348 w
->power
= w
->new_power
;
1350 mask
|= w
->mask
<< w
->shift
;
1352 value
|= w
->on_val
<< w
->shift
;
1354 value
|= w
->off_val
<< w
->shift
;
1356 pop_dbg(dapm
->dev
, card
->pop_time
,
1357 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1358 w
->name
, reg
, value
, mask
);
1360 /* Check for events */
1361 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMU
);
1362 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMD
);
1366 /* Any widget will do, they should all be updating the
1370 pop_dbg(dapm
->dev
, card
->pop_time
,
1371 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1372 value
, mask
, reg
, card
->pop_time
);
1373 pop_wait(card
->pop_time
);
1374 soc_dapm_update_bits(dapm
, reg
, mask
, value
);
1377 list_for_each_entry(w
, pending
, power_list
) {
1378 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMU
);
1379 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMD
);
1383 /* Apply a DAPM power sequence.
1385 * We walk over a pre-sorted list of widgets to apply power to. In
1386 * order to minimise the number of writes to the device required
1387 * multiple widgets will be updated in a single write where possible.
1388 * Currently anything that requires more than a single write is not
1391 static void dapm_seq_run(struct snd_soc_card
*card
,
1392 struct list_head
*list
, int event
, bool power_up
)
1394 struct snd_soc_dapm_widget
*w
, *n
;
1395 struct snd_soc_dapm_context
*d
;
1398 int cur_subseq
= -1;
1399 int cur_reg
= SND_SOC_NOPM
;
1400 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1407 sort
= dapm_down_seq
;
1409 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1412 /* Do we need to apply any queued changes? */
1413 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1414 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1415 if (!list_empty(&pending
))
1416 dapm_seq_run_coalesced(card
, &pending
);
1418 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1419 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1420 if (sort
[i
] == cur_sort
)
1421 cur_dapm
->seq_notifier(cur_dapm
,
1426 if (cur_dapm
&& w
->dapm
!= cur_dapm
)
1427 soc_dapm_async_complete(cur_dapm
);
1429 INIT_LIST_HEAD(&pending
);
1431 cur_subseq
= INT_MIN
;
1432 cur_reg
= SND_SOC_NOPM
;
1437 case snd_soc_dapm_pre
:
1439 list_for_each_entry_safe_continue(w
, n
, list
,
1442 if (event
== SND_SOC_DAPM_STREAM_START
)
1444 NULL
, SND_SOC_DAPM_PRE_PMU
);
1445 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1447 NULL
, SND_SOC_DAPM_PRE_PMD
);
1450 case snd_soc_dapm_post
:
1452 list_for_each_entry_safe_continue(w
, n
, list
,
1455 if (event
== SND_SOC_DAPM_STREAM_START
)
1457 NULL
, SND_SOC_DAPM_POST_PMU
);
1458 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1460 NULL
, SND_SOC_DAPM_POST_PMD
);
1464 /* Queue it up for application */
1465 cur_sort
= sort
[w
->id
];
1466 cur_subseq
= w
->subseq
;
1469 list_move(&w
->power_list
, &pending
);
1474 dev_err(w
->dapm
->dev
,
1475 "ASoC: Failed to apply widget power: %d\n", ret
);
1478 if (!list_empty(&pending
))
1479 dapm_seq_run_coalesced(card
, &pending
);
1481 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1482 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1483 if (sort
[i
] == cur_sort
)
1484 cur_dapm
->seq_notifier(cur_dapm
,
1488 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1489 soc_dapm_async_complete(d
);
1493 static void dapm_widget_update(struct snd_soc_card
*card
)
1495 struct snd_soc_dapm_update
*update
= card
->update
;
1496 struct snd_soc_dapm_widget_list
*wlist
;
1497 struct snd_soc_dapm_widget
*w
= NULL
;
1501 if (!update
|| !dapm_kcontrol_is_powered(update
->kcontrol
))
1504 wlist
= dapm_kcontrol_get_wlist(update
->kcontrol
);
1506 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1507 w
= wlist
->widgets
[wi
];
1509 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1510 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1512 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1520 ret
= soc_dapm_update_bits(w
->dapm
, update
->reg
, update
->mask
,
1523 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1526 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1527 w
= wlist
->widgets
[wi
];
1529 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1530 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1532 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1538 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1539 * they're changing state.
1541 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1543 struct snd_soc_dapm_context
*d
= data
;
1546 /* If we're off and we're not supposed to be go into STANDBY */
1547 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1548 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1550 pm_runtime_get_sync(d
->dev
);
1552 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1555 "ASoC: Failed to turn on bias: %d\n", ret
);
1558 /* Prepare for a transition to ON or away from ON */
1559 if ((d
->target_bias_level
== SND_SOC_BIAS_ON
&&
1560 d
->bias_level
!= SND_SOC_BIAS_ON
) ||
1561 (d
->target_bias_level
!= SND_SOC_BIAS_ON
&&
1562 d
->bias_level
== SND_SOC_BIAS_ON
)) {
1563 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1566 "ASoC: Failed to prepare bias: %d\n", ret
);
1570 /* Async callback run prior to DAPM sequences - brings to their final
1573 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1575 struct snd_soc_dapm_context
*d
= data
;
1578 /* If we just powered the last thing off drop to standby bias */
1579 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1580 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1581 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1582 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1584 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1588 /* If we're in standby and can support bias off then do that */
1589 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1590 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1591 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1593 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1597 pm_runtime_put(d
->dev
);
1600 /* If we just powered up then move to active bias */
1601 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1602 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1603 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1605 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1610 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1611 bool power
, bool connect
)
1613 /* If a connection is being made or broken then that update
1614 * will have marked the peer dirty, otherwise the widgets are
1615 * not connected and this update has no impact. */
1619 /* If the peer is already in the state we're moving to then we
1620 * won't have an impact on it. */
1621 if (power
!= peer
->power
)
1622 dapm_mark_dirty(peer
, "peer state change");
1625 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1626 struct list_head
*up_list
,
1627 struct list_head
*down_list
)
1629 struct snd_soc_dapm_path
*path
;
1631 if (w
->power
== power
)
1634 trace_snd_soc_dapm_widget_power(w
, power
);
1636 /* If we changed our power state perhaps our neigbours changed
1639 list_for_each_entry(path
, &w
->sources
, list_sink
) {
1641 dapm_widget_set_peer_power(path
->source
, power
,
1646 case snd_soc_dapm_supply
:
1647 case snd_soc_dapm_regulator_supply
:
1648 case snd_soc_dapm_clock_supply
:
1649 case snd_soc_dapm_kcontrol
:
1650 /* Supplies can't affect their outputs, only their inputs */
1653 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1655 dapm_widget_set_peer_power(path
->sink
, power
,
1663 dapm_seq_insert(w
, up_list
, true);
1665 dapm_seq_insert(w
, down_list
, false);
1668 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1669 struct list_head
*up_list
,
1670 struct list_head
*down_list
)
1675 case snd_soc_dapm_pre
:
1676 dapm_seq_insert(w
, down_list
, false);
1678 case snd_soc_dapm_post
:
1679 dapm_seq_insert(w
, up_list
, true);
1683 power
= dapm_widget_power_check(w
);
1685 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1690 static bool dapm_idle_bias_off(struct snd_soc_dapm_context
*dapm
)
1692 if (dapm
->idle_bias_off
)
1695 switch (snd_power_get_state(dapm
->card
->snd_card
)) {
1696 case SNDRV_CTL_POWER_D3hot
:
1697 case SNDRV_CTL_POWER_D3cold
:
1698 return dapm
->suspend_bias_off
;
1707 * Scan each dapm widget for complete audio path.
1708 * A complete path is a route that has valid endpoints i.e.:-
1710 * o DAC to output pin.
1711 * o Input Pin to ADC.
1712 * o Input pin to Output pin (bypass, sidetone)
1713 * o DAC to ADC (loopback).
1715 static int dapm_power_widgets(struct snd_soc_card
*card
, int event
)
1717 struct snd_soc_dapm_widget
*w
;
1718 struct snd_soc_dapm_context
*d
;
1720 LIST_HEAD(down_list
);
1721 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1722 enum snd_soc_bias_level bias
;
1724 lockdep_assert_held(&card
->dapm_mutex
);
1726 trace_snd_soc_dapm_start(card
);
1728 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1729 if (dapm_idle_bias_off(d
))
1730 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1732 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1737 /* Check which widgets we need to power and store them in
1738 * lists indicating if they should be powered up or down. We
1739 * only check widgets that have been flagged as dirty but note
1740 * that new widgets may be added to the dirty list while we
1743 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1744 dapm_power_one_widget(w
, &up_list
, &down_list
);
1747 list_for_each_entry(w
, &card
->widgets
, list
) {
1749 case snd_soc_dapm_pre
:
1750 case snd_soc_dapm_post
:
1751 /* These widgets always need to be powered */
1754 list_del_init(&w
->dirty
);
1761 /* Supplies and micbiases only bring the
1762 * context up to STANDBY as unless something
1763 * else is active and passing audio they
1764 * generally don't require full power. Signal
1765 * generators are virtual pins and have no
1766 * power impact themselves.
1769 case snd_soc_dapm_siggen
:
1770 case snd_soc_dapm_vmid
:
1772 case snd_soc_dapm_supply
:
1773 case snd_soc_dapm_regulator_supply
:
1774 case snd_soc_dapm_clock_supply
:
1775 case snd_soc_dapm_micbias
:
1776 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1777 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1780 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1787 /* Force all contexts in the card to the same bias state if
1788 * they're not ground referenced.
1790 bias
= SND_SOC_BIAS_OFF
;
1791 list_for_each_entry(d
, &card
->dapm_list
, list
)
1792 if (d
->target_bias_level
> bias
)
1793 bias
= d
->target_bias_level
;
1794 list_for_each_entry(d
, &card
->dapm_list
, list
)
1795 if (!dapm_idle_bias_off(d
))
1796 d
->target_bias_level
= bias
;
1798 trace_snd_soc_dapm_walk_done(card
);
1800 /* Run card bias changes at first */
1801 dapm_pre_sequence_async(&card
->dapm
, 0);
1802 /* Run other bias changes in parallel */
1803 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1804 if (d
!= &card
->dapm
)
1805 async_schedule_domain(dapm_pre_sequence_async
, d
,
1808 async_synchronize_full_domain(&async_domain
);
1810 list_for_each_entry(w
, &down_list
, power_list
) {
1811 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMD
);
1814 list_for_each_entry(w
, &up_list
, power_list
) {
1815 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMU
);
1818 /* Power down widgets first; try to avoid amplifying pops. */
1819 dapm_seq_run(card
, &down_list
, event
, false);
1821 dapm_widget_update(card
);
1824 dapm_seq_run(card
, &up_list
, event
, true);
1826 /* Run all the bias changes in parallel */
1827 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1828 if (d
!= &card
->dapm
)
1829 async_schedule_domain(dapm_post_sequence_async
, d
,
1832 async_synchronize_full_domain(&async_domain
);
1833 /* Run card bias changes at last */
1834 dapm_post_sequence_async(&card
->dapm
, 0);
1836 /* do we need to notify any clients that DAPM event is complete */
1837 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1838 if (d
->stream_event
)
1839 d
->stream_event(d
, event
);
1842 pop_dbg(card
->dev
, card
->pop_time
,
1843 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1844 pop_wait(card
->pop_time
);
1846 trace_snd_soc_dapm_done(card
);
1851 #ifdef CONFIG_DEBUG_FS
1852 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1853 char __user
*user_buf
,
1854 size_t count
, loff_t
*ppos
)
1856 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1860 struct snd_soc_dapm_path
*p
= NULL
;
1862 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1866 in
= is_connected_input_ep(w
, NULL
);
1867 dapm_clear_walk_input(w
->dapm
, &w
->sources
);
1868 out
= is_connected_output_ep(w
, NULL
);
1869 dapm_clear_walk_output(w
->dapm
, &w
->sinks
);
1871 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1872 w
->name
, w
->power
? "On" : "Off",
1873 w
->force
? " (forced)" : "", in
, out
);
1876 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1877 " - R%d(0x%x) mask 0x%x",
1878 w
->reg
, w
->reg
, w
->mask
<< w
->shift
);
1880 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1883 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1885 w
->active
? "active" : "inactive");
1887 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1888 if (p
->connected
&& !p
->connected(w
, p
->source
))
1892 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1893 " in \"%s\" \"%s\"\n",
1894 p
->name
? p
->name
: "static",
1897 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1898 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1902 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1903 " out \"%s\" \"%s\"\n",
1904 p
->name
? p
->name
: "static",
1908 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1914 static const struct file_operations dapm_widget_power_fops
= {
1915 .open
= simple_open
,
1916 .read
= dapm_widget_power_read_file
,
1917 .llseek
= default_llseek
,
1920 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1921 size_t count
, loff_t
*ppos
)
1923 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1926 switch (dapm
->bias_level
) {
1927 case SND_SOC_BIAS_ON
:
1930 case SND_SOC_BIAS_PREPARE
:
1931 level
= "Prepare\n";
1933 case SND_SOC_BIAS_STANDBY
:
1934 level
= "Standby\n";
1936 case SND_SOC_BIAS_OFF
:
1940 WARN(1, "Unknown bias_level %d\n", dapm
->bias_level
);
1941 level
= "Unknown\n";
1945 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1949 static const struct file_operations dapm_bias_fops
= {
1950 .open
= simple_open
,
1951 .read
= dapm_bias_read_file
,
1952 .llseek
= default_llseek
,
1955 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1956 struct dentry
*parent
)
1960 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
1962 if (!dapm
->debugfs_dapm
) {
1964 "ASoC: Failed to create DAPM debugfs directory\n");
1968 d
= debugfs_create_file("bias_level", 0444,
1969 dapm
->debugfs_dapm
, dapm
,
1973 "ASoC: Failed to create bias level debugfs file\n");
1976 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1978 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1981 if (!dapm
->debugfs_dapm
|| !w
->name
)
1984 d
= debugfs_create_file(w
->name
, 0444,
1985 dapm
->debugfs_dapm
, w
,
1986 &dapm_widget_power_fops
);
1988 dev_warn(w
->dapm
->dev
,
1989 "ASoC: Failed to create %s debugfs file\n",
1993 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1995 debugfs_remove_recursive(dapm
->debugfs_dapm
);
1999 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2000 struct dentry
*parent
)
2004 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2008 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2014 /* test and update the power status of a mux widget */
2015 static int soc_dapm_mux_update_power(struct snd_soc_card
*card
,
2016 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
2018 struct snd_soc_dapm_path
*path
;
2021 lockdep_assert_held(&card
->dapm_mutex
);
2023 /* find dapm widget path assoc with kcontrol */
2024 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2025 if (!path
->name
|| !e
->texts
[mux
])
2029 /* we now need to match the string in the enum to the path */
2030 if (!(strcmp(path
->name
, e
->texts
[mux
]))) {
2031 path
->connect
= 1; /* new connection */
2032 dapm_mark_dirty(path
->source
, "mux connection");
2035 dapm_mark_dirty(path
->source
,
2036 "mux disconnection");
2037 path
->connect
= 0; /* old connection must be powered down */
2039 dapm_mark_dirty(path
->sink
, "mux change");
2043 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2048 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context
*dapm
,
2049 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
,
2050 struct snd_soc_dapm_update
*update
)
2052 struct snd_soc_card
*card
= dapm
->card
;
2055 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2056 card
->update
= update
;
2057 ret
= soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
2058 card
->update
= NULL
;
2059 mutex_unlock(&card
->dapm_mutex
);
2061 soc_dpcm_runtime_update(card
);
2064 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
2066 /* test and update the power status of a mixer or switch widget */
2067 static int soc_dapm_mixer_update_power(struct snd_soc_card
*card
,
2068 struct snd_kcontrol
*kcontrol
, int connect
)
2070 struct snd_soc_dapm_path
*path
;
2073 lockdep_assert_held(&card
->dapm_mutex
);
2075 /* find dapm widget path assoc with kcontrol */
2076 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2078 path
->connect
= connect
;
2079 dapm_mark_dirty(path
->source
, "mixer connection");
2080 dapm_mark_dirty(path
->sink
, "mixer update");
2084 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2089 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context
*dapm
,
2090 struct snd_kcontrol
*kcontrol
, int connect
,
2091 struct snd_soc_dapm_update
*update
)
2093 struct snd_soc_card
*card
= dapm
->card
;
2096 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2097 card
->update
= update
;
2098 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
2099 card
->update
= NULL
;
2100 mutex_unlock(&card
->dapm_mutex
);
2102 soc_dpcm_runtime_update(card
);
2105 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
2107 static ssize_t
dapm_widget_show_codec(struct snd_soc_codec
*codec
, char *buf
)
2109 struct snd_soc_dapm_widget
*w
;
2111 char *state
= "not set";
2113 list_for_each_entry(w
, &codec
->component
.card
->widgets
, list
) {
2114 if (w
->dapm
!= &codec
->dapm
)
2117 /* only display widgets that burnm power */
2119 case snd_soc_dapm_hp
:
2120 case snd_soc_dapm_mic
:
2121 case snd_soc_dapm_spk
:
2122 case snd_soc_dapm_line
:
2123 case snd_soc_dapm_micbias
:
2124 case snd_soc_dapm_dac
:
2125 case snd_soc_dapm_adc
:
2126 case snd_soc_dapm_pga
:
2127 case snd_soc_dapm_out_drv
:
2128 case snd_soc_dapm_mixer
:
2129 case snd_soc_dapm_mixer_named_ctl
:
2130 case snd_soc_dapm_supply
:
2131 case snd_soc_dapm_regulator_supply
:
2132 case snd_soc_dapm_clock_supply
:
2134 count
+= sprintf(buf
+ count
, "%s: %s\n",
2135 w
->name
, w
->power
? "On":"Off");
2142 switch (codec
->dapm
.bias_level
) {
2143 case SND_SOC_BIAS_ON
:
2146 case SND_SOC_BIAS_PREPARE
:
2149 case SND_SOC_BIAS_STANDBY
:
2152 case SND_SOC_BIAS_OFF
:
2156 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2161 /* show dapm widget status in sys fs */
2162 static ssize_t
dapm_widget_show(struct device
*dev
,
2163 struct device_attribute
*attr
, char *buf
)
2165 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2168 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2169 struct snd_soc_codec
*codec
= rtd
->codec_dais
[i
]->codec
;
2170 count
+= dapm_widget_show_codec(codec
, buf
+ count
);
2176 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2178 int snd_soc_dapm_sys_add(struct device
*dev
)
2180 return device_create_file(dev
, &dev_attr_dapm_widget
);
2183 static void snd_soc_dapm_sys_remove(struct device
*dev
)
2185 device_remove_file(dev
, &dev_attr_dapm_widget
);
2188 static void dapm_free_path(struct snd_soc_dapm_path
*path
)
2190 list_del(&path
->list_sink
);
2191 list_del(&path
->list_source
);
2192 list_del(&path
->list_kcontrol
);
2193 list_del(&path
->list
);
2197 /* free all dapm widgets and resources */
2198 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2200 struct snd_soc_dapm_widget
*w
, *next_w
;
2201 struct snd_soc_dapm_path
*p
, *next_p
;
2203 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2204 if (w
->dapm
!= dapm
)
2208 * remove source and sink paths associated to this widget.
2209 * While removing the path, remove reference to it from both
2210 * source and sink widgets so that path is removed only once.
2212 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
)
2215 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
)
2218 kfree(w
->kcontrols
);
2224 static struct snd_soc_dapm_widget
*dapm_find_widget(
2225 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2226 bool search_other_contexts
)
2228 struct snd_soc_dapm_widget
*w
;
2229 struct snd_soc_dapm_widget
*fallback
= NULL
;
2231 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2232 if (!strcmp(w
->name
, pin
)) {
2233 if (w
->dapm
== dapm
)
2240 if (search_other_contexts
)
2246 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2247 const char *pin
, int status
)
2249 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2251 dapm_assert_locked(dapm
);
2254 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2258 if (w
->connected
!= status
)
2259 dapm_mark_dirty(w
, "pin configuration");
2261 w
->connected
= status
;
2269 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2270 * @dapm: DAPM context
2272 * Walks all dapm audio paths and powers widgets according to their
2273 * stream or path usage.
2275 * Requires external locking.
2277 * Returns 0 for success.
2279 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context
*dapm
)
2282 * Suppress early reports (eg, jacks syncing their state) to avoid
2283 * silly DAPM runs during card startup.
2285 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2288 return dapm_power_widgets(dapm
->card
, SND_SOC_DAPM_STREAM_NOP
);
2290 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked
);
2293 * snd_soc_dapm_sync - scan and power dapm paths
2294 * @dapm: DAPM context
2296 * Walks all dapm audio paths and powers widgets according to their
2297 * stream or path usage.
2299 * Returns 0 for success.
2301 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2305 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2306 ret
= snd_soc_dapm_sync_unlocked(dapm
);
2307 mutex_unlock(&dapm
->card
->dapm_mutex
);
2310 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2312 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
2313 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
2314 const char *control
,
2315 int (*connected
)(struct snd_soc_dapm_widget
*source
,
2316 struct snd_soc_dapm_widget
*sink
))
2318 struct snd_soc_dapm_path
*path
;
2321 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2325 path
->source
= wsource
;
2327 path
->connected
= connected
;
2328 INIT_LIST_HEAD(&path
->list
);
2329 INIT_LIST_HEAD(&path
->list_kcontrol
);
2330 INIT_LIST_HEAD(&path
->list_source
);
2331 INIT_LIST_HEAD(&path
->list_sink
);
2333 /* check for external widgets */
2334 if (wsink
->id
== snd_soc_dapm_input
) {
2335 if (wsource
->id
== snd_soc_dapm_micbias
||
2336 wsource
->id
== snd_soc_dapm_mic
||
2337 wsource
->id
== snd_soc_dapm_line
||
2338 wsource
->id
== snd_soc_dapm_output
)
2341 if (wsource
->id
== snd_soc_dapm_output
) {
2342 if (wsink
->id
== snd_soc_dapm_spk
||
2343 wsink
->id
== snd_soc_dapm_hp
||
2344 wsink
->id
== snd_soc_dapm_line
||
2345 wsink
->id
== snd_soc_dapm_input
)
2349 dapm_mark_dirty(wsource
, "Route added");
2350 dapm_mark_dirty(wsink
, "Route added");
2352 /* connect static paths */
2353 if (control
== NULL
) {
2354 list_add(&path
->list
, &dapm
->card
->paths
);
2355 list_add(&path
->list_sink
, &wsink
->sources
);
2356 list_add(&path
->list_source
, &wsource
->sinks
);
2361 /* connect dynamic paths */
2362 switch (wsink
->id
) {
2363 case snd_soc_dapm_adc
:
2364 case snd_soc_dapm_dac
:
2365 case snd_soc_dapm_pga
:
2366 case snd_soc_dapm_out_drv
:
2367 case snd_soc_dapm_input
:
2368 case snd_soc_dapm_output
:
2369 case snd_soc_dapm_siggen
:
2370 case snd_soc_dapm_micbias
:
2371 case snd_soc_dapm_vmid
:
2372 case snd_soc_dapm_pre
:
2373 case snd_soc_dapm_post
:
2374 case snd_soc_dapm_supply
:
2375 case snd_soc_dapm_regulator_supply
:
2376 case snd_soc_dapm_clock_supply
:
2377 case snd_soc_dapm_aif_in
:
2378 case snd_soc_dapm_aif_out
:
2379 case snd_soc_dapm_dai_in
:
2380 case snd_soc_dapm_dai_out
:
2381 case snd_soc_dapm_dai_link
:
2382 case snd_soc_dapm_kcontrol
:
2383 list_add(&path
->list
, &dapm
->card
->paths
);
2384 list_add(&path
->list_sink
, &wsink
->sources
);
2385 list_add(&path
->list_source
, &wsource
->sinks
);
2388 case snd_soc_dapm_mux
:
2389 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
2390 &wsink
->kcontrol_news
[0]);
2394 case snd_soc_dapm_switch
:
2395 case snd_soc_dapm_mixer
:
2396 case snd_soc_dapm_mixer_named_ctl
:
2397 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
2401 case snd_soc_dapm_hp
:
2402 case snd_soc_dapm_mic
:
2403 case snd_soc_dapm_line
:
2404 case snd_soc_dapm_spk
:
2405 list_add(&path
->list
, &dapm
->card
->paths
);
2406 list_add(&path
->list_sink
, &wsink
->sources
);
2407 list_add(&path
->list_source
, &wsource
->sinks
);
2418 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2419 const struct snd_soc_dapm_route
*route
)
2421 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2422 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2425 char prefixed_sink
[80];
2426 char prefixed_source
[80];
2430 prefix
= soc_dapm_prefix(dapm
);
2432 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2433 prefix
, route
->sink
);
2434 sink
= prefixed_sink
;
2435 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2436 prefix
, route
->source
);
2437 source
= prefixed_source
;
2440 source
= route
->source
;
2444 * find src and dest widgets over all widgets but favor a widget from
2445 * current DAPM context
2447 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2448 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2450 if (w
->dapm
== dapm
)
2454 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2456 if (w
->dapm
== dapm
)
2460 /* use widget from another DAPM context if not found from this */
2466 if (wsource
== NULL
) {
2467 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2471 if (wsink
== NULL
) {
2472 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2477 ret
= snd_soc_dapm_add_path(dapm
, wsource
, wsink
, route
->control
,
2484 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2485 source
, route
->control
, sink
);
2489 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2490 const struct snd_soc_dapm_route
*route
)
2492 struct snd_soc_dapm_path
*path
, *p
;
2495 char prefixed_sink
[80];
2496 char prefixed_source
[80];
2499 if (route
->control
) {
2501 "ASoC: Removal of routes with controls not supported\n");
2505 prefix
= soc_dapm_prefix(dapm
);
2507 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2508 prefix
, route
->sink
);
2509 sink
= prefixed_sink
;
2510 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2511 prefix
, route
->source
);
2512 source
= prefixed_source
;
2515 source
= route
->source
;
2519 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2520 if (strcmp(p
->source
->name
, source
) != 0)
2522 if (strcmp(p
->sink
->name
, sink
) != 0)
2529 dapm_mark_dirty(path
->source
, "Route removed");
2530 dapm_mark_dirty(path
->sink
, "Route removed");
2532 dapm_free_path(path
);
2534 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
2542 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2543 * @dapm: DAPM context
2544 * @route: audio routes
2545 * @num: number of routes
2547 * Connects 2 dapm widgets together via a named audio path. The sink is
2548 * the widget receiving the audio signal, whilst the source is the sender
2549 * of the audio signal.
2551 * Returns 0 for success else error. On error all resources can be freed
2552 * with a call to snd_soc_card_free().
2554 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2555 const struct snd_soc_dapm_route
*route
, int num
)
2559 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2560 for (i
= 0; i
< num
; i
++) {
2561 r
= snd_soc_dapm_add_route(dapm
, route
);
2563 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
2565 route
->control
? route
->control
: "direct",
2571 mutex_unlock(&dapm
->card
->dapm_mutex
);
2575 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2578 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2579 * @dapm: DAPM context
2580 * @route: audio routes
2581 * @num: number of routes
2583 * Removes routes from the DAPM context.
2585 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2586 const struct snd_soc_dapm_route
*route
, int num
)
2590 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2591 for (i
= 0; i
< num
; i
++) {
2592 snd_soc_dapm_del_route(dapm
, route
);
2595 mutex_unlock(&dapm
->card
->dapm_mutex
);
2599 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2601 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2602 const struct snd_soc_dapm_route
*route
)
2604 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2607 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2610 struct snd_soc_dapm_path
*path
;
2614 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
2620 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
2625 if (route
->control
|| route
->connected
)
2626 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
2627 route
->source
, route
->sink
);
2629 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2630 if (path
->sink
== sink
) {
2637 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
2638 route
->source
, route
->sink
);
2640 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
2641 count
, route
->source
, route
->sink
);
2647 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2648 * @dapm: DAPM context
2649 * @route: audio routes
2650 * @num: number of routes
2652 * Mark existing routes matching those specified in the passed array
2653 * as being weak, meaning that they are ignored for the purpose of
2654 * power decisions. The main intended use case is for sidetone paths
2655 * which couple audio between other independent paths if they are both
2656 * active in order to make the combination work better at the user
2657 * level but which aren't intended to be "used".
2659 * Note that CODEC drivers should not use this as sidetone type paths
2660 * can frequently also be used as bypass paths.
2662 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2663 const struct snd_soc_dapm_route
*route
, int num
)
2668 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2669 for (i
= 0; i
< num
; i
++) {
2670 err
= snd_soc_dapm_weak_route(dapm
, route
);
2675 mutex_unlock(&dapm
->card
->dapm_mutex
);
2679 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2682 * snd_soc_dapm_new_widgets - add new dapm widgets
2683 * @dapm: DAPM context
2685 * Checks the codec for any new dapm widgets and creates them if found.
2687 * Returns 0 for success.
2689 int snd_soc_dapm_new_widgets(struct snd_soc_card
*card
)
2691 struct snd_soc_dapm_widget
*w
;
2694 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2696 list_for_each_entry(w
, &card
->widgets
, list
)
2701 if (w
->num_kcontrols
) {
2702 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2703 sizeof(struct snd_kcontrol
*),
2705 if (!w
->kcontrols
) {
2706 mutex_unlock(&card
->dapm_mutex
);
2712 case snd_soc_dapm_switch
:
2713 case snd_soc_dapm_mixer
:
2714 case snd_soc_dapm_mixer_named_ctl
:
2717 case snd_soc_dapm_mux
:
2720 case snd_soc_dapm_pga
:
2721 case snd_soc_dapm_out_drv
:
2728 /* Read the initial power state from the device */
2730 soc_dapm_read(w
->dapm
, w
->reg
, &val
);
2731 val
= val
>> w
->shift
;
2733 if (val
== w
->on_val
)
2739 dapm_mark_dirty(w
, "new widget");
2740 dapm_debugfs_add_widget(w
);
2743 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2744 mutex_unlock(&card
->dapm_mutex
);
2747 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2750 * snd_soc_dapm_get_volsw - dapm mixer get callback
2751 * @kcontrol: mixer control
2752 * @ucontrol: control element information
2754 * Callback to get the value of a dapm mixer control.
2756 * Returns 0 for success.
2758 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2759 struct snd_ctl_elem_value
*ucontrol
)
2761 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
2762 struct snd_soc_card
*card
= dapm
->card
;
2763 struct soc_mixer_control
*mc
=
2764 (struct soc_mixer_control
*)kcontrol
->private_value
;
2766 unsigned int shift
= mc
->shift
;
2768 unsigned int mask
= (1 << fls(max
)) - 1;
2769 unsigned int invert
= mc
->invert
;
2773 if (snd_soc_volsw_is_stereo(mc
))
2775 "ASoC: Control '%s' is stereo, which is not supported\n",
2778 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2779 if (dapm_kcontrol_is_powered(kcontrol
) && reg
!= SND_SOC_NOPM
) {
2780 ret
= soc_dapm_read(dapm
, reg
, &val
);
2781 val
= (val
>> shift
) & mask
;
2783 val
= dapm_kcontrol_get_value(kcontrol
);
2785 mutex_unlock(&card
->dapm_mutex
);
2788 ucontrol
->value
.integer
.value
[0] = max
- val
;
2790 ucontrol
->value
.integer
.value
[0] = val
;
2794 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2797 * snd_soc_dapm_put_volsw - dapm mixer set callback
2798 * @kcontrol: mixer control
2799 * @ucontrol: control element information
2801 * Callback to set the value of a dapm mixer control.
2803 * Returns 0 for success.
2805 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
2806 struct snd_ctl_elem_value
*ucontrol
)
2808 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
2809 struct snd_soc_card
*card
= dapm
->card
;
2810 struct soc_mixer_control
*mc
=
2811 (struct soc_mixer_control
*)kcontrol
->private_value
;
2813 unsigned int shift
= mc
->shift
;
2815 unsigned int mask
= (1 << fls(max
)) - 1;
2816 unsigned int invert
= mc
->invert
;
2818 int connect
, change
, reg_change
= 0;
2819 struct snd_soc_dapm_update update
;
2822 if (snd_soc_volsw_is_stereo(mc
))
2824 "ASoC: Control '%s' is stereo, which is not supported\n",
2827 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2833 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2835 change
= dapm_kcontrol_set_value(kcontrol
, val
);
2837 if (reg
!= SND_SOC_NOPM
) {
2838 mask
= mask
<< shift
;
2841 reg_change
= soc_dapm_test_bits(dapm
, reg
, mask
, val
);
2844 if (change
|| reg_change
) {
2846 update
.kcontrol
= kcontrol
;
2850 card
->update
= &update
;
2852 change
|= reg_change
;
2854 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
2856 card
->update
= NULL
;
2859 mutex_unlock(&card
->dapm_mutex
);
2862 soc_dpcm_runtime_update(card
);
2866 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
2869 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2870 * @kcontrol: mixer control
2871 * @ucontrol: control element information
2873 * Callback to get the value of a dapm enumerated double mixer control.
2875 * Returns 0 for success.
2877 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2878 struct snd_ctl_elem_value
*ucontrol
)
2880 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
2881 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2882 unsigned int reg_val
, val
;
2884 if (e
->reg
!= SND_SOC_NOPM
) {
2885 int ret
= soc_dapm_read(dapm
, e
->reg
, ®_val
);
2889 reg_val
= dapm_kcontrol_get_value(kcontrol
);
2892 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2893 ucontrol
->value
.enumerated
.item
[0] = snd_soc_enum_val_to_item(e
, val
);
2894 if (e
->shift_l
!= e
->shift_r
) {
2895 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2896 val
= snd_soc_enum_val_to_item(e
, val
);
2897 ucontrol
->value
.enumerated
.item
[1] = val
;
2902 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2905 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2906 * @kcontrol: mixer control
2907 * @ucontrol: control element information
2909 * Callback to set the value of a dapm enumerated double mixer control.
2911 * Returns 0 for success.
2913 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2914 struct snd_ctl_elem_value
*ucontrol
)
2916 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
2917 struct snd_soc_card
*card
= dapm
->card
;
2918 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2919 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
2920 unsigned int val
, change
;
2922 struct snd_soc_dapm_update update
;
2925 if (item
[0] >= e
->items
)
2928 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
2929 mask
= e
->mask
<< e
->shift_l
;
2930 if (e
->shift_l
!= e
->shift_r
) {
2931 if (item
[1] > e
->items
)
2933 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_l
;
2934 mask
|= e
->mask
<< e
->shift_r
;
2937 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2939 if (e
->reg
!= SND_SOC_NOPM
)
2940 change
= soc_dapm_test_bits(dapm
, e
->reg
, mask
, val
);
2942 change
= dapm_kcontrol_set_value(kcontrol
, val
);
2945 if (e
->reg
!= SND_SOC_NOPM
) {
2946 update
.kcontrol
= kcontrol
;
2947 update
.reg
= e
->reg
;
2950 card
->update
= &update
;
2953 ret
= soc_dapm_mux_update_power(card
, kcontrol
, item
[0], e
);
2955 card
->update
= NULL
;
2958 mutex_unlock(&card
->dapm_mutex
);
2961 soc_dpcm_runtime_update(card
);
2965 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2968 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2970 * @kcontrol: mixer control
2971 * @uinfo: control element information
2973 * Callback to provide information about a pin switch control.
2975 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
2976 struct snd_ctl_elem_info
*uinfo
)
2978 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2980 uinfo
->value
.integer
.min
= 0;
2981 uinfo
->value
.integer
.max
= 1;
2985 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
2988 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2990 * @kcontrol: mixer control
2993 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
2994 struct snd_ctl_elem_value
*ucontrol
)
2996 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
2997 const char *pin
= (const char *)kcontrol
->private_value
;
2999 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3001 ucontrol
->value
.integer
.value
[0] =
3002 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
3004 mutex_unlock(&card
->dapm_mutex
);
3008 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
3011 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3013 * @kcontrol: mixer control
3016 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3017 struct snd_ctl_elem_value
*ucontrol
)
3019 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3020 const char *pin
= (const char *)kcontrol
->private_value
;
3022 if (ucontrol
->value
.integer
.value
[0])
3023 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3025 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3027 snd_soc_dapm_sync(&card
->dapm
);
3030 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3032 static struct snd_soc_dapm_widget
*
3033 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3034 const struct snd_soc_dapm_widget
*widget
)
3036 struct snd_soc_dapm_widget
*w
;
3040 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3044 case snd_soc_dapm_regulator_supply
:
3045 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3046 if (IS_ERR(w
->regulator
)) {
3047 ret
= PTR_ERR(w
->regulator
);
3048 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3053 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3054 ret
= regulator_allow_bypass(w
->regulator
, true);
3056 dev_warn(w
->dapm
->dev
,
3057 "ASoC: Failed to bypass %s: %d\n",
3061 case snd_soc_dapm_clock_supply
:
3062 #ifdef CONFIG_CLKDEV_LOOKUP
3063 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3064 if (IS_ERR(w
->clk
)) {
3065 ret
= PTR_ERR(w
->clk
);
3066 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3078 prefix
= soc_dapm_prefix(dapm
);
3080 w
->name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, widget
->name
);
3082 w
->name
= kasprintf(GFP_KERNEL
, "%s", widget
->name
);
3084 if (w
->name
== NULL
) {
3090 case snd_soc_dapm_switch
:
3091 case snd_soc_dapm_mixer
:
3092 case snd_soc_dapm_mixer_named_ctl
:
3093 w
->power_check
= dapm_generic_check_power
;
3095 case snd_soc_dapm_mux
:
3096 w
->power_check
= dapm_generic_check_power
;
3098 case snd_soc_dapm_dai_out
:
3099 w
->power_check
= dapm_adc_check_power
;
3101 case snd_soc_dapm_dai_in
:
3102 w
->power_check
= dapm_dac_check_power
;
3104 case snd_soc_dapm_adc
:
3105 case snd_soc_dapm_aif_out
:
3106 case snd_soc_dapm_dac
:
3107 case snd_soc_dapm_aif_in
:
3108 case snd_soc_dapm_pga
:
3109 case snd_soc_dapm_out_drv
:
3110 case snd_soc_dapm_input
:
3111 case snd_soc_dapm_output
:
3112 case snd_soc_dapm_micbias
:
3113 case snd_soc_dapm_spk
:
3114 case snd_soc_dapm_hp
:
3115 case snd_soc_dapm_mic
:
3116 case snd_soc_dapm_line
:
3117 case snd_soc_dapm_dai_link
:
3118 w
->power_check
= dapm_generic_check_power
;
3120 case snd_soc_dapm_supply
:
3121 case snd_soc_dapm_regulator_supply
:
3122 case snd_soc_dapm_clock_supply
:
3123 case snd_soc_dapm_kcontrol
:
3124 w
->power_check
= dapm_supply_check_power
;
3127 w
->power_check
= dapm_always_on_check_power
;
3132 if (dapm
->component
)
3133 w
->codec
= dapm
->component
->codec
;
3134 INIT_LIST_HEAD(&w
->sources
);
3135 INIT_LIST_HEAD(&w
->sinks
);
3136 INIT_LIST_HEAD(&w
->list
);
3137 INIT_LIST_HEAD(&w
->dirty
);
3138 list_add(&w
->list
, &dapm
->card
->widgets
);
3140 /* machine layer set ups unconnected pins and insertions */
3146 * snd_soc_dapm_new_controls - create new dapm controls
3147 * @dapm: DAPM context
3148 * @widget: widget array
3149 * @num: number of widgets
3151 * Creates new DAPM controls based upon the templates.
3153 * Returns 0 for success else error.
3155 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3156 const struct snd_soc_dapm_widget
*widget
,
3159 struct snd_soc_dapm_widget
*w
;
3163 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3164 for (i
= 0; i
< num
; i
++) {
3165 w
= snd_soc_dapm_new_control(dapm
, widget
);
3168 "ASoC: Failed to create DAPM control %s\n",
3175 mutex_unlock(&dapm
->card
->dapm_mutex
);
3178 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3180 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3181 struct snd_kcontrol
*kcontrol
, int event
)
3183 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3184 struct snd_soc_dai
*source
, *sink
;
3185 const struct snd_soc_pcm_stream
*config
= w
->params
;
3186 struct snd_pcm_substream substream
;
3187 struct snd_pcm_hw_params
*params
= NULL
;
3191 if (WARN_ON(!config
) ||
3192 WARN_ON(list_empty(&w
->sources
) || list_empty(&w
->sinks
)))
3195 /* We only support a single source and sink, pick the first */
3196 source_p
= list_first_entry(&w
->sources
, struct snd_soc_dapm_path
,
3198 sink_p
= list_first_entry(&w
->sinks
, struct snd_soc_dapm_path
,
3201 if (WARN_ON(!source_p
|| !sink_p
) ||
3202 WARN_ON(!sink_p
->source
|| !source_p
->sink
) ||
3203 WARN_ON(!source_p
->source
|| !sink_p
->sink
))
3206 source
= source_p
->source
->priv
;
3207 sink
= sink_p
->sink
->priv
;
3209 /* Be a little careful as we don't want to overflow the mask array */
3210 if (config
->formats
) {
3211 fmt
= ffs(config
->formats
) - 1;
3213 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3218 /* Currently very limited parameter selection */
3219 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3224 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3226 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3228 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3231 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3232 = config
->channels_min
;
3233 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3234 = config
->channels_max
;
3236 memset(&substream
, 0, sizeof(substream
));
3239 case SND_SOC_DAPM_PRE_PMU
:
3240 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3241 ret
= soc_dai_hw_params(&substream
, params
, source
);
3245 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3246 ret
= soc_dai_hw_params(&substream
, params
, sink
);
3251 case SND_SOC_DAPM_POST_PMU
:
3252 ret
= snd_soc_dai_digital_mute(sink
, 0,
3253 SNDRV_PCM_STREAM_PLAYBACK
);
3254 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3255 dev_warn(sink
->dev
, "ASoC: Failed to unmute: %d\n", ret
);
3259 case SND_SOC_DAPM_PRE_PMD
:
3260 ret
= snd_soc_dai_digital_mute(sink
, 1,
3261 SNDRV_PCM_STREAM_PLAYBACK
);
3262 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3263 dev_warn(sink
->dev
, "ASoC: Failed to mute: %d\n", ret
);
3268 WARN(1, "Unknown event %d\n", event
);
3277 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3278 const struct snd_soc_pcm_stream
*params
,
3279 struct snd_soc_dapm_widget
*source
,
3280 struct snd_soc_dapm_widget
*sink
)
3282 struct snd_soc_dapm_widget
template;
3283 struct snd_soc_dapm_widget
*w
;
3288 len
= strlen(source
->name
) + strlen(sink
->name
) + 2;
3289 link_name
= devm_kzalloc(card
->dev
, len
, GFP_KERNEL
);
3292 snprintf(link_name
, len
, "%s-%s", source
->name
, sink
->name
);
3294 memset(&template, 0, sizeof(template));
3295 template.reg
= SND_SOC_NOPM
;
3296 template.id
= snd_soc_dapm_dai_link
;
3297 template.name
= link_name
;
3298 template.event
= snd_soc_dai_link_event
;
3299 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3300 SND_SOC_DAPM_PRE_PMD
;
3302 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
3304 w
= snd_soc_dapm_new_control(&card
->dapm
, &template);
3306 dev_err(card
->dev
, "ASoC: Failed to create %s widget\n",
3313 ret
= snd_soc_dapm_add_path(&card
->dapm
, source
, w
, NULL
, NULL
);
3316 return snd_soc_dapm_add_path(&card
->dapm
, w
, sink
, NULL
, NULL
);
3319 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3320 struct snd_soc_dai
*dai
)
3322 struct snd_soc_dapm_widget
template;
3323 struct snd_soc_dapm_widget
*w
;
3325 WARN_ON(dapm
->dev
!= dai
->dev
);
3327 memset(&template, 0, sizeof(template));
3328 template.reg
= SND_SOC_NOPM
;
3330 if (dai
->driver
->playback
.stream_name
) {
3331 template.id
= snd_soc_dapm_dai_in
;
3332 template.name
= dai
->driver
->playback
.stream_name
;
3333 template.sname
= dai
->driver
->playback
.stream_name
;
3335 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3338 w
= snd_soc_dapm_new_control(dapm
, &template);
3340 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3341 dai
->driver
->playback
.stream_name
);
3346 dai
->playback_widget
= w
;
3349 if (dai
->driver
->capture
.stream_name
) {
3350 template.id
= snd_soc_dapm_dai_out
;
3351 template.name
= dai
->driver
->capture
.stream_name
;
3352 template.sname
= dai
->driver
->capture
.stream_name
;
3354 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3357 w
= snd_soc_dapm_new_control(dapm
, &template);
3359 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3360 dai
->driver
->capture
.stream_name
);
3365 dai
->capture_widget
= w
;
3371 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3373 struct snd_soc_dapm_widget
*dai_w
, *w
;
3374 struct snd_soc_dapm_widget
*src
, *sink
;
3375 struct snd_soc_dai
*dai
;
3377 /* For each DAI widget... */
3378 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3379 switch (dai_w
->id
) {
3380 case snd_soc_dapm_dai_in
:
3381 case snd_soc_dapm_dai_out
:
3389 /* ...find all widgets with the same stream and link them */
3390 list_for_each_entry(w
, &card
->widgets
, list
) {
3391 if (w
->dapm
!= dai_w
->dapm
)
3395 case snd_soc_dapm_dai_in
:
3396 case snd_soc_dapm_dai_out
:
3402 if (!w
->sname
|| !strstr(w
->sname
, dai_w
->name
))
3405 if (dai_w
->id
== snd_soc_dapm_dai_in
) {
3412 dev_dbg(dai
->dev
, "%s -> %s\n", src
->name
, sink
->name
);
3413 snd_soc_dapm_add_path(w
->dapm
, src
, sink
, NULL
, NULL
);
3420 static void dapm_connect_dai_link_widgets(struct snd_soc_card
*card
,
3421 struct snd_soc_pcm_runtime
*rtd
)
3423 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3424 struct snd_soc_dapm_widget
*sink
, *source
;
3427 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
3428 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
3430 /* there is no point in connecting BE DAI links with dummies */
3431 if (snd_soc_dai_is_dummy(codec_dai
) ||
3432 snd_soc_dai_is_dummy(cpu_dai
))
3435 /* connect BE DAI playback if widgets are valid */
3436 if (codec_dai
->playback_widget
&& cpu_dai
->playback_widget
) {
3437 source
= cpu_dai
->playback_widget
;
3438 sink
= codec_dai
->playback_widget
;
3439 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3440 cpu_dai
->component
->name
, source
->name
,
3441 codec_dai
->component
->name
, sink
->name
);
3443 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3447 /* connect BE DAI capture if widgets are valid */
3448 if (codec_dai
->capture_widget
&& cpu_dai
->capture_widget
) {
3449 source
= codec_dai
->capture_widget
;
3450 sink
= cpu_dai
->capture_widget
;
3451 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3452 codec_dai
->component
->name
, source
->name
,
3453 cpu_dai
->component
->name
, sink
->name
);
3455 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3461 static void soc_dapm_dai_stream_event(struct snd_soc_dai
*dai
, int stream
,
3464 struct snd_soc_dapm_widget
*w
;
3466 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
3467 w
= dai
->playback_widget
;
3469 w
= dai
->capture_widget
;
3472 dapm_mark_dirty(w
, "stream event");
3475 case SND_SOC_DAPM_STREAM_START
:
3478 case SND_SOC_DAPM_STREAM_STOP
:
3481 case SND_SOC_DAPM_STREAM_SUSPEND
:
3482 case SND_SOC_DAPM_STREAM_RESUME
:
3483 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3484 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3490 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card
*card
)
3492 struct snd_soc_pcm_runtime
*rtd
= card
->rtd
;
3495 /* for each BE DAI link... */
3496 for (i
= 0; i
< card
->num_rtd
; i
++) {
3497 rtd
= &card
->rtd
[i
];
3500 * dynamic FE links have no fixed DAI mapping.
3501 * CODEC<->CODEC links have no direct connection.
3503 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->params
)
3506 dapm_connect_dai_link_widgets(card
, rtd
);
3510 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3515 soc_dapm_dai_stream_event(rtd
->cpu_dai
, stream
, event
);
3516 for (i
= 0; i
< rtd
->num_codecs
; i
++)
3517 soc_dapm_dai_stream_event(rtd
->codec_dais
[i
], stream
, event
);
3519 dapm_power_widgets(rtd
->card
, event
);
3523 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3524 * @rtd: PCM runtime data
3525 * @stream: stream name
3526 * @event: stream event
3528 * Sends a stream event to the dapm core. The core then makes any
3529 * necessary widget power changes.
3531 * Returns 0 for success else error.
3533 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3536 struct snd_soc_card
*card
= rtd
->card
;
3538 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3539 soc_dapm_stream_event(rtd
, stream
, event
);
3540 mutex_unlock(&card
->dapm_mutex
);
3544 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3545 * @dapm: DAPM context
3548 * Enables input/output pin and its parents or children widgets iff there is
3549 * a valid audio route and active audio stream.
3551 * Requires external locking.
3553 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3554 * do any widget power switching.
3556 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
3559 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
3561 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked
);
3564 * snd_soc_dapm_enable_pin - enable pin.
3565 * @dapm: DAPM context
3568 * Enables input/output pin and its parents or children widgets iff there is
3569 * a valid audio route and active audio stream.
3571 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3572 * do any widget power switching.
3574 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3578 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3580 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 1);
3582 mutex_unlock(&dapm
->card
->dapm_mutex
);
3586 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
3589 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3590 * @dapm: DAPM context
3593 * Enables input/output pin regardless of any other state. This is
3594 * intended for use with microphone bias supplies used in microphone
3597 * Requires external locking.
3599 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3600 * do any widget power switching.
3602 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
3605 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3608 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3612 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
3615 dapm_mark_dirty(w
, "force enable");
3619 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked
);
3622 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3623 * @dapm: DAPM context
3626 * Enables input/output pin regardless of any other state. This is
3627 * intended for use with microphone bias supplies used in microphone
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_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
3638 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3640 ret
= snd_soc_dapm_force_enable_pin_unlocked(dapm
, pin
);
3642 mutex_unlock(&dapm
->card
->dapm_mutex
);
3646 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
3649 * snd_soc_dapm_disable_pin_unlocked - disable pin.
3650 * @dapm: DAPM context
3653 * Disables input/output pin and its parents or children widgets.
3655 * Requires external locking.
3657 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3658 * do any widget power switching.
3660 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
3663 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3665 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked
);
3668 * snd_soc_dapm_disable_pin - disable pin.
3669 * @dapm: DAPM context
3672 * Disables input/output pin and its parents or children widgets.
3674 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3675 * do any widget power switching.
3677 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
3682 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3684 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
3686 mutex_unlock(&dapm
->card
->dapm_mutex
);
3690 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
3693 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
3694 * @dapm: DAPM context
3697 * Marks the specified pin as being not connected, disabling it along
3698 * any parent or child widgets. At present this is identical to
3699 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3700 * additional things such as disabling controls which only affect
3701 * paths through the pin.
3703 * Requires external locking.
3705 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3706 * do any widget power switching.
3708 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
3711 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3713 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked
);
3716 * snd_soc_dapm_nc_pin - permanently disable pin.
3717 * @dapm: DAPM context
3720 * Marks the specified pin as being not connected, disabling it along
3721 * any parent or child widgets. At present this is identical to
3722 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3723 * additional things such as disabling controls which only affect
3724 * paths through the pin.
3726 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3727 * do any widget power switching.
3729 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3733 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3735 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
3737 mutex_unlock(&dapm
->card
->dapm_mutex
);
3741 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
3744 * snd_soc_dapm_get_pin_status - get audio pin status
3745 * @dapm: DAPM context
3746 * @pin: audio signal pin endpoint (or start point)
3748 * Get audio pin status - connected or disconnected.
3750 * Returns 1 for connected otherwise 0.
3752 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
3755 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3758 return w
->connected
;
3762 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
3765 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3766 * @dapm: DAPM context
3767 * @pin: audio signal pin endpoint (or start point)
3769 * Mark the given endpoint or pin as ignoring suspend. When the
3770 * system is disabled a path between two endpoints flagged as ignoring
3771 * suspend will not be disabled. The path must already be enabled via
3772 * normal means at suspend time, it will not be turned on if it was not
3775 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
3778 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
3781 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3785 w
->ignore_suspend
= 1;
3789 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
3791 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card
*card
,
3792 struct snd_soc_dapm_widget
*w
)
3794 struct snd_soc_dapm_path
*p
;
3796 list_for_each_entry(p
, &card
->paths
, list
) {
3797 if ((p
->source
== w
) || (p
->sink
== w
)) {
3799 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3800 p
->source
->name
, p
->source
->id
, p
->source
->dapm
,
3801 p
->sink
->name
, p
->sink
->id
, p
->sink
->dapm
);
3803 /* Connected to something other than the codec */
3804 if (p
->source
->dapm
!= p
->sink
->dapm
)
3807 * Loopback connection from codec external pin to
3808 * codec external pin
3810 if (p
->sink
->id
== snd_soc_dapm_input
) {
3811 switch (p
->source
->id
) {
3812 case snd_soc_dapm_output
:
3813 case snd_soc_dapm_micbias
:
3826 * snd_soc_dapm_auto_nc_pins - call snd_soc_dapm_nc_pin for unused pins
3827 * @card: The card whose pins should be processed
3829 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the card
3830 * which are unused. Pins are used if they are connected externally to a
3831 * component, whether that be to some other device, or a loop-back connection to
3832 * the component itself.
3834 void snd_soc_dapm_auto_nc_pins(struct snd_soc_card
*card
)
3836 struct snd_soc_dapm_widget
*w
;
3838 dev_dbg(card
->dev
, "ASoC: Auto NC: DAPMs: card:%p\n", &card
->dapm
);
3840 list_for_each_entry(w
, &card
->widgets
, list
) {
3842 case snd_soc_dapm_input
:
3843 case snd_soc_dapm_output
:
3844 case snd_soc_dapm_micbias
:
3845 dev_dbg(card
->dev
, "ASoC: Auto NC: Checking widget %s\n",
3847 if (!snd_soc_dapm_widget_in_card_paths(card
, w
)) {
3849 "... Not in map; disabling\n");
3850 snd_soc_dapm_nc_pin(w
->dapm
, w
->name
);
3860 * snd_soc_dapm_free - free dapm resources
3861 * @dapm: DAPM context
3863 * Free all dapm widgets and resources.
3865 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
3867 snd_soc_dapm_sys_remove(dapm
->dev
);
3868 dapm_debugfs_cleanup(dapm
);
3869 dapm_free_widgets(dapm
);
3870 list_del(&dapm
->list
);
3872 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
3874 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context
*dapm
)
3876 struct snd_soc_card
*card
= dapm
->card
;
3877 struct snd_soc_dapm_widget
*w
;
3878 LIST_HEAD(down_list
);
3881 mutex_lock(&card
->dapm_mutex
);
3883 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
3884 if (w
->dapm
!= dapm
)
3887 dapm_seq_insert(w
, &down_list
, false);
3893 /* If there were no widgets to power down we're already in
3897 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
3898 snd_soc_dapm_set_bias_level(dapm
,
3899 SND_SOC_BIAS_PREPARE
);
3900 dapm_seq_run(card
, &down_list
, 0, false);
3901 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
3902 snd_soc_dapm_set_bias_level(dapm
,
3903 SND_SOC_BIAS_STANDBY
);
3906 mutex_unlock(&card
->dapm_mutex
);
3910 * snd_soc_dapm_shutdown - callback for system shutdown
3912 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
3914 struct snd_soc_dapm_context
*dapm
;
3916 list_for_each_entry(dapm
, &card
->dapm_list
, list
) {
3917 if (dapm
!= &card
->dapm
) {
3918 soc_dapm_shutdown_dapm(dapm
);
3919 if (dapm
->bias_level
== SND_SOC_BIAS_STANDBY
)
3920 snd_soc_dapm_set_bias_level(dapm
,
3925 soc_dapm_shutdown_dapm(&card
->dapm
);
3926 if (card
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
3927 snd_soc_dapm_set_bias_level(&card
->dapm
,
3931 /* Module information */
3932 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3933 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3934 MODULE_LICENSE("GPL");