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 struct snd_soc_dapm_widget
*
56 snd_soc_dapm_new_control_unlocked(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_demux
] = 6,
74 [snd_soc_dapm_dac
] = 7,
75 [snd_soc_dapm_switch
] = 8,
76 [snd_soc_dapm_mixer
] = 8,
77 [snd_soc_dapm_mixer_named_ctl
] = 8,
78 [snd_soc_dapm_pga
] = 9,
79 [snd_soc_dapm_adc
] = 10,
80 [snd_soc_dapm_out_drv
] = 11,
81 [snd_soc_dapm_hp
] = 11,
82 [snd_soc_dapm_spk
] = 11,
83 [snd_soc_dapm_line
] = 11,
84 [snd_soc_dapm_kcontrol
] = 12,
85 [snd_soc_dapm_post
] = 13,
88 static int dapm_down_seq
[] = {
89 [snd_soc_dapm_pre
] = 0,
90 [snd_soc_dapm_kcontrol
] = 1,
91 [snd_soc_dapm_adc
] = 2,
92 [snd_soc_dapm_hp
] = 3,
93 [snd_soc_dapm_spk
] = 3,
94 [snd_soc_dapm_line
] = 3,
95 [snd_soc_dapm_out_drv
] = 3,
96 [snd_soc_dapm_pga
] = 4,
97 [snd_soc_dapm_switch
] = 5,
98 [snd_soc_dapm_mixer_named_ctl
] = 5,
99 [snd_soc_dapm_mixer
] = 5,
100 [snd_soc_dapm_dac
] = 6,
101 [snd_soc_dapm_mic
] = 7,
102 [snd_soc_dapm_micbias
] = 8,
103 [snd_soc_dapm_mux
] = 9,
104 [snd_soc_dapm_demux
] = 9,
105 [snd_soc_dapm_aif_in
] = 10,
106 [snd_soc_dapm_aif_out
] = 10,
107 [snd_soc_dapm_dai_in
] = 10,
108 [snd_soc_dapm_dai_out
] = 10,
109 [snd_soc_dapm_dai_link
] = 11,
110 [snd_soc_dapm_supply
] = 12,
111 [snd_soc_dapm_clock_supply
] = 13,
112 [snd_soc_dapm_regulator_supply
] = 13,
113 [snd_soc_dapm_post
] = 14,
116 static void dapm_assert_locked(struct snd_soc_dapm_context
*dapm
)
118 if (dapm
->card
&& dapm
->card
->instantiated
)
119 lockdep_assert_held(&dapm
->card
->dapm_mutex
);
122 static void pop_wait(u32 pop_time
)
125 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
128 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
136 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
141 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
142 dev_info(dev
, "%s", buf
);
148 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
150 return !list_empty(&w
->dirty
);
153 static void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
155 dapm_assert_locked(w
->dapm
);
157 if (!dapm_dirty_widget(w
)) {
158 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
160 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
165 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of input
167 * @w: The widget for which to invalidate the cached number of input paths
169 * The function resets the cached number of inputs for the specified widget and
170 * all widgets that can be reached via outgoing paths from the widget.
172 * This function must be called if the number of input paths for a widget might
173 * have changed. E.g. if the source state of a widget changes or a path is added
174 * or activated with the widget as the sink.
176 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget
*w
)
178 struct snd_soc_dapm_widget
*sink
;
179 struct snd_soc_dapm_path
*p
;
182 dapm_assert_locked(w
->dapm
);
188 list_add_tail(&w
->work_list
, &list
);
190 list_for_each_entry(w
, &list
, work_list
) {
191 list_for_each_entry(p
, &w
->sinks
, list_source
) {
192 if (p
->is_supply
|| p
->weak
|| !p
->connect
)
195 if (sink
->inputs
!= -1) {
197 list_add_tail(&sink
->work_list
, &list
);
204 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
206 * @w: The widget for which to invalidate the cached number of output paths
208 * Resets the cached number of outputs for the specified widget and all widgets
209 * that can be reached via incoming paths from the widget.
211 * This function must be called if the number of output paths for a widget might
212 * have changed. E.g. if the sink state of a widget changes or a path is added
213 * or activated with the widget as the source.
215 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget
*w
)
217 struct snd_soc_dapm_widget
*source
;
218 struct snd_soc_dapm_path
*p
;
221 dapm_assert_locked(w
->dapm
);
223 if (w
->outputs
== -1)
227 list_add_tail(&w
->work_list
, &list
);
229 list_for_each_entry(w
, &list
, work_list
) {
230 list_for_each_entry(p
, &w
->sources
, list_sink
) {
231 if (p
->is_supply
|| p
->weak
|| !p
->connect
)
234 if (source
->outputs
!= -1) {
235 source
->outputs
= -1;
236 list_add_tail(&source
->work_list
, &list
);
243 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
244 * for the widgets connected to a path
245 * @p: The path to invalidate
247 * Resets the cached number of inputs for the sink of the path and the cached
248 * number of outputs for the source of the path.
250 * This function must be called when a path is added, removed or the connected
253 static void dapm_path_invalidate(struct snd_soc_dapm_path
*p
)
256 * Weak paths or supply paths do not influence the number of input or
257 * output paths of their neighbors.
259 if (p
->weak
|| p
->is_supply
)
263 * The number of connected endpoints is the sum of the number of
264 * connected endpoints of all neighbors. If a node with 0 connected
265 * endpoints is either connected or disconnected that sum won't change,
266 * so there is no need to re-check the path.
268 if (p
->source
->inputs
!= 0)
269 dapm_widget_invalidate_input_paths(p
->sink
);
270 if (p
->sink
->outputs
!= 0)
271 dapm_widget_invalidate_output_paths(p
->source
);
274 void dapm_mark_endpoints_dirty(struct snd_soc_card
*card
)
276 struct snd_soc_dapm_widget
*w
;
278 mutex_lock(&card
->dapm_mutex
);
280 list_for_each_entry(w
, &card
->widgets
, list
) {
281 if (w
->is_sink
|| w
->is_source
) {
282 dapm_mark_dirty(w
, "Rechecking endpoints");
284 dapm_widget_invalidate_output_paths(w
);
286 dapm_widget_invalidate_input_paths(w
);
290 mutex_unlock(&card
->dapm_mutex
);
292 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty
);
294 /* create a new dapm widget */
295 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
296 const struct snd_soc_dapm_widget
*_widget
)
298 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
301 struct dapm_kcontrol_data
{
303 struct snd_soc_dapm_widget
*widget
;
304 struct list_head paths
;
305 struct snd_soc_dapm_widget_list
*wlist
;
308 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget
*widget
,
309 struct snd_kcontrol
*kcontrol
)
311 struct dapm_kcontrol_data
*data
;
312 struct soc_mixer_control
*mc
;
317 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
321 INIT_LIST_HEAD(&data
->paths
);
323 switch (widget
->id
) {
324 case snd_soc_dapm_switch
:
325 case snd_soc_dapm_mixer
:
326 case snd_soc_dapm_mixer_named_ctl
:
327 mc
= (struct soc_mixer_control
*)kcontrol
->private_value
;
329 if (mc
->autodisable
) {
330 struct snd_soc_dapm_widget
template;
332 name
= kasprintf(GFP_KERNEL
, "%s %s", kcontrol
->id
.name
,
339 memset(&template, 0, sizeof(template));
340 template.reg
= mc
->reg
;
341 template.mask
= (1 << fls(mc
->max
)) - 1;
342 template.shift
= mc
->shift
;
344 template.off_val
= mc
->max
;
346 template.off_val
= 0;
347 template.on_val
= template.off_val
;
348 template.id
= snd_soc_dapm_kcontrol
;
349 template.name
= name
;
351 data
->value
= template.on_val
;
354 snd_soc_dapm_new_control_unlocked(widget
->dapm
,
362 case snd_soc_dapm_demux
:
363 case snd_soc_dapm_mux
:
364 e
= (struct soc_enum
*)kcontrol
->private_value
;
366 if (e
->autodisable
) {
367 struct snd_soc_dapm_widget
template;
369 name
= kasprintf(GFP_KERNEL
, "%s %s", kcontrol
->id
.name
,
376 memset(&template, 0, sizeof(template));
377 template.reg
= e
->reg
;
378 template.mask
= e
->mask
<< e
->shift_l
;
379 template.shift
= e
->shift_l
;
380 template.off_val
= snd_soc_enum_item_to_val(e
, 0);
381 template.on_val
= template.off_val
;
382 template.id
= snd_soc_dapm_kcontrol
;
383 template.name
= name
;
385 data
->value
= template.on_val
;
387 data
->widget
= snd_soc_dapm_new_control(widget
->dapm
,
394 snd_soc_dapm_add_path(widget
->dapm
, data
->widget
,
402 kcontrol
->private_data
= data
;
413 static void dapm_kcontrol_free(struct snd_kcontrol
*kctl
)
415 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kctl
);
417 kfree(data
->widget
->name
);
422 static struct snd_soc_dapm_widget_list
*dapm_kcontrol_get_wlist(
423 const struct snd_kcontrol
*kcontrol
)
425 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
430 static int dapm_kcontrol_add_widget(struct snd_kcontrol
*kcontrol
,
431 struct snd_soc_dapm_widget
*widget
)
433 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
434 struct snd_soc_dapm_widget_list
*new_wlist
;
438 n
= data
->wlist
->num_widgets
+ 1;
442 new_wlist
= krealloc(data
->wlist
,
443 sizeof(*new_wlist
) + sizeof(widget
) * n
, GFP_KERNEL
);
447 new_wlist
->widgets
[n
- 1] = widget
;
448 new_wlist
->num_widgets
= n
;
450 data
->wlist
= new_wlist
;
455 static void dapm_kcontrol_add_path(const struct snd_kcontrol
*kcontrol
,
456 struct snd_soc_dapm_path
*path
)
458 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
460 list_add_tail(&path
->list_kcontrol
, &data
->paths
);
463 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol
*kcontrol
)
465 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
470 return data
->widget
->power
;
473 static struct list_head
*dapm_kcontrol_get_path_list(
474 const struct snd_kcontrol
*kcontrol
)
476 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
481 #define dapm_kcontrol_for_each_path(path, kcontrol) \
482 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
485 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol
*kcontrol
)
487 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
491 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value
);
493 static bool dapm_kcontrol_set_value(const struct snd_kcontrol
*kcontrol
,
496 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
498 if (data
->value
== value
)
502 data
->widget
->on_val
= value
;
510 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
512 * @kcontrol: The kcontrol
514 * Note: This function must only be used on kcontrols that are known to have
515 * been registered for a CODEC. Otherwise the behaviour is undefined.
517 struct snd_soc_dapm_context
*snd_soc_dapm_kcontrol_dapm(
518 struct snd_kcontrol
*kcontrol
)
520 return dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0]->dapm
;
522 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm
);
524 static void dapm_reset(struct snd_soc_card
*card
)
526 struct snd_soc_dapm_widget
*w
;
528 lockdep_assert_held(&card
->dapm_mutex
);
530 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
532 list_for_each_entry(w
, &card
->widgets
, list
) {
533 w
->new_power
= w
->power
;
534 w
->power_checked
= false;
538 static const char *soc_dapm_prefix(struct snd_soc_dapm_context
*dapm
)
540 if (!dapm
->component
)
542 return dapm
->component
->name_prefix
;
545 static int soc_dapm_read(struct snd_soc_dapm_context
*dapm
, int reg
,
548 if (!dapm
->component
)
550 return snd_soc_component_read(dapm
->component
, reg
, value
);
553 static int soc_dapm_update_bits(struct snd_soc_dapm_context
*dapm
,
554 int reg
, unsigned int mask
, unsigned int value
)
556 if (!dapm
->component
)
558 return snd_soc_component_update_bits(dapm
->component
, reg
,
562 static int soc_dapm_test_bits(struct snd_soc_dapm_context
*dapm
,
563 int reg
, unsigned int mask
, unsigned int value
)
565 if (!dapm
->component
)
567 return snd_soc_component_test_bits(dapm
->component
, reg
, mask
, value
);
570 static void soc_dapm_async_complete(struct snd_soc_dapm_context
*dapm
)
573 snd_soc_component_async_complete(dapm
->component
);
576 static struct snd_soc_dapm_widget
*
577 dapm_wcache_lookup(struct snd_soc_dapm_wcache
*wcache
, const char *name
)
579 struct snd_soc_dapm_widget
*w
= wcache
->widget
;
580 struct list_head
*wlist
;
585 wlist
= &w
->dapm
->card
->widgets
;
587 list_for_each_entry_from(w
, wlist
, list
) {
588 if (!strcmp(name
, w
->name
))
599 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache
*wcache
,
600 struct snd_soc_dapm_widget
*w
)
606 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
607 * @dapm: The DAPM context for which to set the level
608 * @level: The level to set
610 * Forces the DAPM bias level to a specific state. It will call the bias level
611 * callback of DAPM context with the specified level. This will even happen if
612 * the context is already at the same level. Furthermore it will not go through
613 * the normal bias level sequencing, meaning any intermediate states between the
614 * current and the target state will not be entered.
616 * Note that the change in bias level is only temporary and the next time
617 * snd_soc_dapm_sync() is called the state will be set to the level as
618 * determined by the DAPM core. The function is mainly intended to be used to
619 * used during probe or resume from suspend to power up the device so
620 * initialization can be done, before the DAPM core takes over.
622 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context
*dapm
,
623 enum snd_soc_bias_level level
)
627 if (dapm
->set_bias_level
)
628 ret
= dapm
->set_bias_level(dapm
, level
);
631 dapm
->bias_level
= level
;
635 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level
);
638 * snd_soc_dapm_set_bias_level - set the bias level for the system
639 * @dapm: DAPM context
640 * @level: level to configure
642 * Configure the bias (power) levels for the SoC audio device.
644 * Returns 0 for success else error.
646 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
647 enum snd_soc_bias_level level
)
649 struct snd_soc_card
*card
= dapm
->card
;
652 trace_snd_soc_bias_level_start(card
, level
);
654 if (card
&& card
->set_bias_level
)
655 ret
= card
->set_bias_level(card
, dapm
, level
);
659 if (!card
|| dapm
!= &card
->dapm
)
660 ret
= snd_soc_dapm_force_bias_level(dapm
, level
);
665 if (card
&& card
->set_bias_level_post
)
666 ret
= card
->set_bias_level_post(card
, dapm
, level
);
668 trace_snd_soc_bias_level_done(card
, level
);
673 /* connect mux widget to its interconnecting audio paths */
674 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
675 struct snd_soc_dapm_path
*path
, const char *control_name
,
676 struct snd_soc_dapm_widget
*w
)
678 const struct snd_kcontrol_new
*kcontrol
= &w
->kcontrol_news
[0];
679 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
680 unsigned int val
, item
;
683 if (e
->reg
!= SND_SOC_NOPM
) {
684 soc_dapm_read(dapm
, e
->reg
, &val
);
685 val
= (val
>> e
->shift_l
) & e
->mask
;
686 item
= snd_soc_enum_val_to_item(e
, val
);
688 /* since a virtual mux has no backing registers to
689 * decide which path to connect, it will try to match
690 * with the first enumeration. This is to ensure
691 * that the default mux choice (the first) will be
692 * correctly powered up during initialization.
697 for (i
= 0; i
< e
->items
; i
++) {
698 if (!(strcmp(control_name
, e
->texts
[i
]))) {
699 path
->name
= e
->texts
[i
];
711 /* set up initial codec paths */
712 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path
*p
, int i
)
714 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
715 p
->sink
->kcontrol_news
[i
].private_value
;
716 unsigned int reg
= mc
->reg
;
717 unsigned int shift
= mc
->shift
;
718 unsigned int max
= mc
->max
;
719 unsigned int mask
= (1 << fls(max
)) - 1;
720 unsigned int invert
= mc
->invert
;
723 if (reg
!= SND_SOC_NOPM
) {
724 soc_dapm_read(p
->sink
->dapm
, reg
, &val
);
725 val
= (val
>> shift
) & mask
;
734 /* connect mixer widget to its interconnecting audio paths */
735 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
736 struct snd_soc_dapm_path
*path
, const char *control_name
)
740 /* search for mixer kcontrol */
741 for (i
= 0; i
< path
->sink
->num_kcontrols
; i
++) {
742 if (!strcmp(control_name
, path
->sink
->kcontrol_news
[i
].name
)) {
743 path
->name
= path
->sink
->kcontrol_news
[i
].name
;
744 dapm_set_mixer_path_status(path
, i
);
751 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
752 struct snd_soc_dapm_widget
*kcontrolw
,
753 const struct snd_kcontrol_new
*kcontrol_new
,
754 struct snd_kcontrol
**kcontrol
)
756 struct snd_soc_dapm_widget
*w
;
761 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
762 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
764 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
765 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
767 *kcontrol
= w
->kcontrols
[i
];
777 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
778 * create it. Either way, add the widget into the control's widget list
780 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget
*w
,
783 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
784 struct snd_card
*card
= dapm
->card
->snd_card
;
788 struct snd_kcontrol
*kcontrol
;
789 bool wname_in_long_name
, kcname_in_long_name
;
790 char *long_name
= NULL
;
794 prefix
= soc_dapm_prefix(dapm
);
796 prefix_len
= strlen(prefix
) + 1;
800 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[kci
],
805 wname_in_long_name
= false;
806 kcname_in_long_name
= true;
809 case snd_soc_dapm_switch
:
810 case snd_soc_dapm_mixer
:
811 wname_in_long_name
= true;
812 kcname_in_long_name
= true;
814 case snd_soc_dapm_mixer_named_ctl
:
815 wname_in_long_name
= false;
816 kcname_in_long_name
= true;
818 case snd_soc_dapm_demux
:
819 case snd_soc_dapm_mux
:
820 wname_in_long_name
= true;
821 kcname_in_long_name
= false;
828 if (wname_in_long_name
&& kcname_in_long_name
) {
830 * The control will get a prefix from the control
831 * creation process but we're also using the same
832 * prefix for widgets so cut the prefix off the
833 * front of the widget name.
835 long_name
= kasprintf(GFP_KERNEL
, "%s %s",
836 w
->name
+ prefix_len
,
837 w
->kcontrol_news
[kci
].name
);
838 if (long_name
== NULL
)
842 } else if (wname_in_long_name
) {
844 name
= w
->name
+ prefix_len
;
847 name
= w
->kcontrol_news
[kci
].name
;
850 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[kci
], NULL
, name
,
857 kcontrol
->private_free
= dapm_kcontrol_free
;
859 ret
= dapm_kcontrol_data_alloc(w
, kcontrol
);
861 snd_ctl_free_one(kcontrol
);
865 ret
= snd_ctl_add(card
, kcontrol
);
868 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
874 ret
= dapm_kcontrol_add_widget(kcontrol
, w
);
876 w
->kcontrols
[kci
] = kcontrol
;
884 /* create new dapm mixer control */
885 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
888 struct snd_soc_dapm_path
*path
;
889 struct dapm_kcontrol_data
*data
;
892 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
894 list_for_each_entry(path
, &w
->sources
, list_sink
) {
895 /* mixer/mux paths name must match control name */
896 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
899 if (!w
->kcontrols
[i
]) {
900 ret
= dapm_create_or_share_mixmux_kcontrol(w
, i
);
905 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
907 data
= snd_kcontrol_chip(w
->kcontrols
[i
]);
909 snd_soc_dapm_add_path(data
->widget
->dapm
,
919 /* create new dapm mux control */
920 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
922 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
923 struct snd_soc_dapm_path
*path
;
924 struct list_head
*paths
;
929 case snd_soc_dapm_mux
:
933 case snd_soc_dapm_demux
:
941 if (w
->num_kcontrols
!= 1) {
943 "ASoC: %s %s has incorrect number of controls\n", type
,
948 if (list_empty(paths
)) {
949 dev_err(dapm
->dev
, "ASoC: %s %s has no paths\n", type
, w
->name
);
953 ret
= dapm_create_or_share_mixmux_kcontrol(w
, 0);
957 if (w
->id
== snd_soc_dapm_mux
) {
958 list_for_each_entry(path
, &w
->sources
, list_sink
) {
960 dapm_kcontrol_add_path(w
->kcontrols
[0], path
);
963 list_for_each_entry(path
, &w
->sinks
, list_source
) {
965 dapm_kcontrol_add_path(w
->kcontrols
[0], path
);
972 /* create new dapm volume control */
973 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
975 if (w
->num_kcontrols
)
976 dev_err(w
->dapm
->dev
,
977 "ASoC: PGA controls not supported: '%s'\n", w
->name
);
982 /* create new dapm dai link control */
983 static int dapm_new_dai_link(struct snd_soc_dapm_widget
*w
)
986 struct snd_kcontrol
*kcontrol
;
987 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
988 struct snd_card
*card
= dapm
->card
->snd_card
;
990 /* create control for links with > 1 config */
991 if (w
->num_params
<= 1)
995 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
996 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
], w
,
998 ret
= snd_ctl_add(card
, kcontrol
);
1001 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1002 w
->name
, w
->kcontrol_news
[i
].name
, ret
);
1005 kcontrol
->private_data
= w
;
1006 w
->kcontrols
[i
] = kcontrol
;
1012 /* We implement power down on suspend by checking the power state of
1013 * the ALSA card - when we are suspending the ALSA state for the card
1016 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
1018 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
1021 case SNDRV_CTL_POWER_D3hot
:
1022 case SNDRV_CTL_POWER_D3cold
:
1023 if (widget
->ignore_suspend
)
1024 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
1026 return widget
->ignore_suspend
;
1032 /* add widget to list if it's not already in the list */
1033 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list
**list
,
1034 struct snd_soc_dapm_widget
*w
)
1036 struct snd_soc_dapm_widget_list
*wlist
;
1037 int wlistsize
, wlistentries
, i
;
1044 /* is this widget already in the list */
1045 for (i
= 0; i
< wlist
->num_widgets
; i
++) {
1046 if (wlist
->widgets
[i
] == w
)
1050 /* allocate some new space */
1051 wlistentries
= wlist
->num_widgets
+ 1;
1052 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
1053 wlistentries
* sizeof(struct snd_soc_dapm_widget
*);
1054 *list
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
1055 if (*list
== NULL
) {
1056 dev_err(w
->dapm
->dev
, "ASoC: can't allocate widget list for %s\n",
1062 /* insert the widget */
1063 dev_dbg(w
->dapm
->dev
, "ASoC: added %s in widget list pos %d\n",
1064 w
->name
, wlist
->num_widgets
);
1066 wlist
->widgets
[wlist
->num_widgets
] = w
;
1067 wlist
->num_widgets
++;
1072 * Recursively check for a completed path to an active or physically connected
1073 * output widget. Returns number of complete paths.
1075 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
1076 struct snd_soc_dapm_widget_list
**list
)
1078 struct snd_soc_dapm_path
*path
;
1081 if (widget
->outputs
>= 0)
1082 return widget
->outputs
;
1084 DAPM_UPDATE_STAT(widget
, path_checks
);
1086 if (widget
->is_sink
&& widget
->connected
) {
1087 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
1088 return widget
->outputs
;
1091 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
1092 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
1094 if (path
->weak
|| path
->is_supply
)
1100 trace_snd_soc_dapm_output_path(widget
, path
);
1102 if (path
->connect
) {
1105 /* do we need to add this widget to the list ? */
1108 err
= dapm_list_add_widget(list
, path
->sink
);
1110 dev_err(widget
->dapm
->dev
,
1111 "ASoC: could not add widget %s\n",
1118 con
+= is_connected_output_ep(path
->sink
, list
);
1124 widget
->outputs
= con
;
1130 * Recursively check for a completed path to an active or physically connected
1131 * input widget. Returns number of complete paths.
1133 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
1134 struct snd_soc_dapm_widget_list
**list
)
1136 struct snd_soc_dapm_path
*path
;
1139 if (widget
->inputs
>= 0)
1140 return widget
->inputs
;
1142 DAPM_UPDATE_STAT(widget
, path_checks
);
1144 if (widget
->is_source
&& widget
->connected
) {
1145 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
1146 return widget
->inputs
;
1149 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
1150 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
1152 if (path
->weak
|| path
->is_supply
)
1158 trace_snd_soc_dapm_input_path(widget
, path
);
1160 if (path
->connect
) {
1163 /* do we need to add this widget to the list ? */
1166 err
= dapm_list_add_widget(list
, path
->source
);
1168 dev_err(widget
->dapm
->dev
,
1169 "ASoC: could not add widget %s\n",
1176 con
+= is_connected_input_ep(path
->source
, list
);
1182 widget
->inputs
= con
;
1188 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1189 * @dai: the soc DAI.
1190 * @stream: stream direction.
1191 * @list: list of active widgets for this stream.
1193 * Queries DAPM graph as to whether an valid audio stream path exists for
1194 * the initial stream specified by name. This takes into account
1195 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1197 * Returns the number of valid paths or negative error.
1199 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
1200 struct snd_soc_dapm_widget_list
**list
)
1202 struct snd_soc_card
*card
= dai
->component
->card
;
1203 struct snd_soc_dapm_widget
*w
;
1206 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1209 * For is_connected_{output,input}_ep fully discover the graph we need
1210 * to reset the cached number of inputs and outputs.
1212 list_for_each_entry(w
, &card
->widgets
, list
) {
1217 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1218 paths
= is_connected_output_ep(dai
->playback_widget
, list
);
1220 paths
= is_connected_input_ep(dai
->capture_widget
, list
);
1222 trace_snd_soc_dapm_connected(paths
, stream
);
1223 mutex_unlock(&card
->dapm_mutex
);
1229 * Handler for regulator supply widget.
1231 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1232 struct snd_kcontrol
*kcontrol
, int event
)
1236 soc_dapm_async_complete(w
->dapm
);
1238 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1239 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1240 ret
= regulator_allow_bypass(w
->regulator
, false);
1242 dev_warn(w
->dapm
->dev
,
1243 "ASoC: Failed to unbypass %s: %d\n",
1247 return regulator_enable(w
->regulator
);
1249 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1250 ret
= regulator_allow_bypass(w
->regulator
, true);
1252 dev_warn(w
->dapm
->dev
,
1253 "ASoC: Failed to bypass %s: %d\n",
1257 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1260 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1263 * Handler for clock supply widget.
1265 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1266 struct snd_kcontrol
*kcontrol
, int event
)
1271 soc_dapm_async_complete(w
->dapm
);
1273 #ifdef CONFIG_HAVE_CLK
1274 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1275 return clk_prepare_enable(w
->clk
);
1277 clk_disable_unprepare(w
->clk
);
1283 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1285 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1287 if (w
->power_checked
)
1288 return w
->new_power
;
1293 w
->new_power
= w
->power_check(w
);
1295 w
->power_checked
= true;
1297 return w
->new_power
;
1300 /* Generic check to see if a widget should be powered.
1302 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1306 DAPM_UPDATE_STAT(w
, power_checks
);
1308 in
= is_connected_input_ep(w
, NULL
);
1309 out
= is_connected_output_ep(w
, NULL
);
1310 return out
!= 0 && in
!= 0;
1313 /* Check to see if a power supply is needed */
1314 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1316 struct snd_soc_dapm_path
*path
;
1318 DAPM_UPDATE_STAT(w
, power_checks
);
1320 /* Check if one of our outputs is connected */
1321 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1322 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1327 if (path
->connected
&&
1328 !path
->connected(path
->source
, path
->sink
))
1331 if (dapm_widget_power_check(path
->sink
))
1338 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1343 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1344 struct snd_soc_dapm_widget
*b
,
1352 sort
= dapm_down_seq
;
1354 if (sort
[a
->id
] != sort
[b
->id
])
1355 return sort
[a
->id
] - sort
[b
->id
];
1356 if (a
->subseq
!= b
->subseq
) {
1358 return a
->subseq
- b
->subseq
;
1360 return b
->subseq
- a
->subseq
;
1362 if (a
->reg
!= b
->reg
)
1363 return a
->reg
- b
->reg
;
1364 if (a
->dapm
!= b
->dapm
)
1365 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1370 /* Insert a widget in order into a DAPM power sequence. */
1371 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1372 struct list_head
*list
,
1375 struct snd_soc_dapm_widget
*w
;
1377 list_for_each_entry(w
, list
, power_list
)
1378 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1379 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1383 list_add_tail(&new_widget
->power_list
, list
);
1386 static void dapm_seq_check_event(struct snd_soc_card
*card
,
1387 struct snd_soc_dapm_widget
*w
, int event
)
1389 const char *ev_name
;
1393 case SND_SOC_DAPM_PRE_PMU
:
1394 ev_name
= "PRE_PMU";
1397 case SND_SOC_DAPM_POST_PMU
:
1398 ev_name
= "POST_PMU";
1401 case SND_SOC_DAPM_PRE_PMD
:
1402 ev_name
= "PRE_PMD";
1405 case SND_SOC_DAPM_POST_PMD
:
1406 ev_name
= "POST_PMD";
1409 case SND_SOC_DAPM_WILL_PMU
:
1410 ev_name
= "WILL_PMU";
1413 case SND_SOC_DAPM_WILL_PMD
:
1414 ev_name
= "WILL_PMD";
1418 WARN(1, "Unknown event %d\n", event
);
1422 if (w
->new_power
!= power
)
1425 if (w
->event
&& (w
->event_flags
& event
)) {
1426 pop_dbg(w
->dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1428 soc_dapm_async_complete(w
->dapm
);
1429 trace_snd_soc_dapm_widget_event_start(w
, event
);
1430 ret
= w
->event(w
, NULL
, event
);
1431 trace_snd_soc_dapm_widget_event_done(w
, event
);
1433 dev_err(w
->dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1434 ev_name
, w
->name
, ret
);
1438 /* Apply the coalesced changes from a DAPM sequence */
1439 static void dapm_seq_run_coalesced(struct snd_soc_card
*card
,
1440 struct list_head
*pending
)
1442 struct snd_soc_dapm_context
*dapm
;
1443 struct snd_soc_dapm_widget
*w
;
1445 unsigned int value
= 0;
1446 unsigned int mask
= 0;
1448 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
, power_list
);
1452 list_for_each_entry(w
, pending
, power_list
) {
1453 WARN_ON(reg
!= w
->reg
|| dapm
!= w
->dapm
);
1454 w
->power
= w
->new_power
;
1456 mask
|= w
->mask
<< w
->shift
;
1458 value
|= w
->on_val
<< w
->shift
;
1460 value
|= w
->off_val
<< w
->shift
;
1462 pop_dbg(dapm
->dev
, card
->pop_time
,
1463 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1464 w
->name
, reg
, value
, mask
);
1466 /* Check for events */
1467 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMU
);
1468 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMD
);
1472 /* Any widget will do, they should all be updating the
1476 pop_dbg(dapm
->dev
, card
->pop_time
,
1477 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1478 value
, mask
, reg
, card
->pop_time
);
1479 pop_wait(card
->pop_time
);
1480 soc_dapm_update_bits(dapm
, reg
, mask
, value
);
1483 list_for_each_entry(w
, pending
, power_list
) {
1484 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMU
);
1485 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMD
);
1489 /* Apply a DAPM power sequence.
1491 * We walk over a pre-sorted list of widgets to apply power to. In
1492 * order to minimise the number of writes to the device required
1493 * multiple widgets will be updated in a single write where possible.
1494 * Currently anything that requires more than a single write is not
1497 static void dapm_seq_run(struct snd_soc_card
*card
,
1498 struct list_head
*list
, int event
, bool power_up
)
1500 struct snd_soc_dapm_widget
*w
, *n
;
1501 struct snd_soc_dapm_context
*d
;
1504 int cur_subseq
= -1;
1505 int cur_reg
= SND_SOC_NOPM
;
1506 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1513 sort
= dapm_down_seq
;
1515 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1518 /* Do we need to apply any queued changes? */
1519 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1520 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1521 if (!list_empty(&pending
))
1522 dapm_seq_run_coalesced(card
, &pending
);
1524 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1525 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1526 if (sort
[i
] == cur_sort
)
1527 cur_dapm
->seq_notifier(cur_dapm
,
1532 if (cur_dapm
&& w
->dapm
!= cur_dapm
)
1533 soc_dapm_async_complete(cur_dapm
);
1535 INIT_LIST_HEAD(&pending
);
1537 cur_subseq
= INT_MIN
;
1538 cur_reg
= SND_SOC_NOPM
;
1543 case snd_soc_dapm_pre
:
1545 list_for_each_entry_safe_continue(w
, n
, list
,
1548 if (event
== SND_SOC_DAPM_STREAM_START
)
1550 NULL
, SND_SOC_DAPM_PRE_PMU
);
1551 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1553 NULL
, SND_SOC_DAPM_PRE_PMD
);
1556 case snd_soc_dapm_post
:
1558 list_for_each_entry_safe_continue(w
, n
, list
,
1561 if (event
== SND_SOC_DAPM_STREAM_START
)
1563 NULL
, SND_SOC_DAPM_POST_PMU
);
1564 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1566 NULL
, SND_SOC_DAPM_POST_PMD
);
1570 /* Queue it up for application */
1571 cur_sort
= sort
[w
->id
];
1572 cur_subseq
= w
->subseq
;
1575 list_move(&w
->power_list
, &pending
);
1580 dev_err(w
->dapm
->dev
,
1581 "ASoC: Failed to apply widget power: %d\n", ret
);
1584 if (!list_empty(&pending
))
1585 dapm_seq_run_coalesced(card
, &pending
);
1587 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1588 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1589 if (sort
[i
] == cur_sort
)
1590 cur_dapm
->seq_notifier(cur_dapm
,
1594 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1595 soc_dapm_async_complete(d
);
1599 static void dapm_widget_update(struct snd_soc_card
*card
)
1601 struct snd_soc_dapm_update
*update
= card
->update
;
1602 struct snd_soc_dapm_widget_list
*wlist
;
1603 struct snd_soc_dapm_widget
*w
= NULL
;
1607 if (!update
|| !dapm_kcontrol_is_powered(update
->kcontrol
))
1610 wlist
= dapm_kcontrol_get_wlist(update
->kcontrol
);
1612 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1613 w
= wlist
->widgets
[wi
];
1615 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1616 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1618 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1626 ret
= soc_dapm_update_bits(w
->dapm
, update
->reg
, update
->mask
,
1629 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1632 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1633 w
= wlist
->widgets
[wi
];
1635 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1636 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1638 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1644 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1645 * they're changing state.
1647 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1649 struct snd_soc_dapm_context
*d
= data
;
1652 /* If we're off and we're not supposed to be go into STANDBY */
1653 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1654 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1656 pm_runtime_get_sync(d
->dev
);
1658 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1661 "ASoC: Failed to turn on bias: %d\n", ret
);
1664 /* Prepare for a transition to ON or away from ON */
1665 if ((d
->target_bias_level
== SND_SOC_BIAS_ON
&&
1666 d
->bias_level
!= SND_SOC_BIAS_ON
) ||
1667 (d
->target_bias_level
!= SND_SOC_BIAS_ON
&&
1668 d
->bias_level
== SND_SOC_BIAS_ON
)) {
1669 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1672 "ASoC: Failed to prepare bias: %d\n", ret
);
1676 /* Async callback run prior to DAPM sequences - brings to their final
1679 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1681 struct snd_soc_dapm_context
*d
= data
;
1684 /* If we just powered the last thing off drop to standby bias */
1685 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1686 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1687 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1688 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1690 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1694 /* If we're in standby and can support bias off then do that */
1695 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1696 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1697 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1699 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1703 pm_runtime_put(d
->dev
);
1706 /* If we just powered up then move to active bias */
1707 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1708 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1709 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1711 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1716 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1717 bool power
, bool connect
)
1719 /* If a connection is being made or broken then that update
1720 * will have marked the peer dirty, otherwise the widgets are
1721 * not connected and this update has no impact. */
1725 /* If the peer is already in the state we're moving to then we
1726 * won't have an impact on it. */
1727 if (power
!= peer
->power
)
1728 dapm_mark_dirty(peer
, "peer state change");
1731 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1732 struct list_head
*up_list
,
1733 struct list_head
*down_list
)
1735 struct snd_soc_dapm_path
*path
;
1737 if (w
->power
== power
)
1740 trace_snd_soc_dapm_widget_power(w
, power
);
1742 /* If we changed our power state perhaps our neigbours changed
1745 list_for_each_entry(path
, &w
->sources
, list_sink
)
1746 dapm_widget_set_peer_power(path
->source
, power
, path
->connect
);
1748 /* Supplies can't affect their outputs, only their inputs */
1749 if (!w
->is_supply
) {
1750 list_for_each_entry(path
, &w
->sinks
, list_source
)
1751 dapm_widget_set_peer_power(path
->sink
, power
,
1756 dapm_seq_insert(w
, up_list
, true);
1758 dapm_seq_insert(w
, down_list
, false);
1761 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1762 struct list_head
*up_list
,
1763 struct list_head
*down_list
)
1768 case snd_soc_dapm_pre
:
1769 dapm_seq_insert(w
, down_list
, false);
1771 case snd_soc_dapm_post
:
1772 dapm_seq_insert(w
, up_list
, true);
1776 power
= dapm_widget_power_check(w
);
1778 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1783 static bool dapm_idle_bias_off(struct snd_soc_dapm_context
*dapm
)
1785 if (dapm
->idle_bias_off
)
1788 switch (snd_power_get_state(dapm
->card
->snd_card
)) {
1789 case SNDRV_CTL_POWER_D3hot
:
1790 case SNDRV_CTL_POWER_D3cold
:
1791 return dapm
->suspend_bias_off
;
1800 * Scan each dapm widget for complete audio path.
1801 * A complete path is a route that has valid endpoints i.e.:-
1803 * o DAC to output pin.
1804 * o Input Pin to ADC.
1805 * o Input pin to Output pin (bypass, sidetone)
1806 * o DAC to ADC (loopback).
1808 static int dapm_power_widgets(struct snd_soc_card
*card
, int event
)
1810 struct snd_soc_dapm_widget
*w
;
1811 struct snd_soc_dapm_context
*d
;
1813 LIST_HEAD(down_list
);
1814 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1815 enum snd_soc_bias_level bias
;
1817 lockdep_assert_held(&card
->dapm_mutex
);
1819 trace_snd_soc_dapm_start(card
);
1821 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1822 if (dapm_idle_bias_off(d
))
1823 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1825 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1830 /* Check which widgets we need to power and store them in
1831 * lists indicating if they should be powered up or down. We
1832 * only check widgets that have been flagged as dirty but note
1833 * that new widgets may be added to the dirty list while we
1836 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1837 dapm_power_one_widget(w
, &up_list
, &down_list
);
1840 list_for_each_entry(w
, &card
->widgets
, list
) {
1842 case snd_soc_dapm_pre
:
1843 case snd_soc_dapm_post
:
1844 /* These widgets always need to be powered */
1847 list_del_init(&w
->dirty
);
1854 /* Supplies and micbiases only bring the
1855 * context up to STANDBY as unless something
1856 * else is active and passing audio they
1857 * generally don't require full power. Signal
1858 * generators are virtual pins and have no
1859 * power impact themselves.
1862 case snd_soc_dapm_siggen
:
1863 case snd_soc_dapm_vmid
:
1865 case snd_soc_dapm_supply
:
1866 case snd_soc_dapm_regulator_supply
:
1867 case snd_soc_dapm_clock_supply
:
1868 case snd_soc_dapm_micbias
:
1869 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1870 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1873 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1880 /* Force all contexts in the card to the same bias state if
1881 * they're not ground referenced.
1883 bias
= SND_SOC_BIAS_OFF
;
1884 list_for_each_entry(d
, &card
->dapm_list
, list
)
1885 if (d
->target_bias_level
> bias
)
1886 bias
= d
->target_bias_level
;
1887 list_for_each_entry(d
, &card
->dapm_list
, list
)
1888 if (!dapm_idle_bias_off(d
))
1889 d
->target_bias_level
= bias
;
1891 trace_snd_soc_dapm_walk_done(card
);
1893 /* Run card bias changes at first */
1894 dapm_pre_sequence_async(&card
->dapm
, 0);
1895 /* Run other bias changes in parallel */
1896 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1897 if (d
!= &card
->dapm
)
1898 async_schedule_domain(dapm_pre_sequence_async
, d
,
1901 async_synchronize_full_domain(&async_domain
);
1903 list_for_each_entry(w
, &down_list
, power_list
) {
1904 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMD
);
1907 list_for_each_entry(w
, &up_list
, power_list
) {
1908 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMU
);
1911 /* Power down widgets first; try to avoid amplifying pops. */
1912 dapm_seq_run(card
, &down_list
, event
, false);
1914 dapm_widget_update(card
);
1917 dapm_seq_run(card
, &up_list
, event
, true);
1919 /* Run all the bias changes in parallel */
1920 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1921 if (d
!= &card
->dapm
)
1922 async_schedule_domain(dapm_post_sequence_async
, d
,
1925 async_synchronize_full_domain(&async_domain
);
1926 /* Run card bias changes at last */
1927 dapm_post_sequence_async(&card
->dapm
, 0);
1929 /* do we need to notify any clients that DAPM event is complete */
1930 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1931 if (d
->stream_event
)
1932 d
->stream_event(d
, event
);
1935 pop_dbg(card
->dev
, card
->pop_time
,
1936 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1937 pop_wait(card
->pop_time
);
1939 trace_snd_soc_dapm_done(card
);
1944 #ifdef CONFIG_DEBUG_FS
1945 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1946 char __user
*user_buf
,
1947 size_t count
, loff_t
*ppos
)
1949 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1953 struct snd_soc_dapm_path
*p
= NULL
;
1955 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1959 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
1964 in
= is_connected_input_ep(w
, NULL
);
1965 out
= is_connected_output_ep(w
, NULL
);
1968 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1969 w
->name
, w
->power
? "On" : "Off",
1970 w
->force
? " (forced)" : "", in
, out
);
1973 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1974 " - R%d(0x%x) mask 0x%x",
1975 w
->reg
, w
->reg
, w
->mask
<< w
->shift
);
1977 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1980 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1982 w
->active
? "active" : "inactive");
1984 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1985 if (p
->connected
&& !p
->connected(w
, p
->source
))
1989 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1990 " in \"%s\" \"%s\"\n",
1991 p
->name
? p
->name
: "static",
1994 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1995 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1999 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
2000 " out \"%s\" \"%s\"\n",
2001 p
->name
? p
->name
: "static",
2005 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
2011 static const struct file_operations dapm_widget_power_fops
= {
2012 .open
= simple_open
,
2013 .read
= dapm_widget_power_read_file
,
2014 .llseek
= default_llseek
,
2017 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
2018 size_t count
, loff_t
*ppos
)
2020 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
2023 switch (dapm
->bias_level
) {
2024 case SND_SOC_BIAS_ON
:
2027 case SND_SOC_BIAS_PREPARE
:
2028 level
= "Prepare\n";
2030 case SND_SOC_BIAS_STANDBY
:
2031 level
= "Standby\n";
2033 case SND_SOC_BIAS_OFF
:
2037 WARN(1, "Unknown bias_level %d\n", dapm
->bias_level
);
2038 level
= "Unknown\n";
2042 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
2046 static const struct file_operations dapm_bias_fops
= {
2047 .open
= simple_open
,
2048 .read
= dapm_bias_read_file
,
2049 .llseek
= default_llseek
,
2052 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2053 struct dentry
*parent
)
2060 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
2062 if (!dapm
->debugfs_dapm
) {
2064 "ASoC: Failed to create DAPM debugfs directory\n");
2068 d
= debugfs_create_file("bias_level", 0444,
2069 dapm
->debugfs_dapm
, dapm
,
2073 "ASoC: Failed to create bias level debugfs file\n");
2076 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2078 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
2081 if (!dapm
->debugfs_dapm
|| !w
->name
)
2084 d
= debugfs_create_file(w
->name
, 0444,
2085 dapm
->debugfs_dapm
, w
,
2086 &dapm_widget_power_fops
);
2088 dev_warn(w
->dapm
->dev
,
2089 "ASoC: Failed to create %s debugfs file\n",
2093 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2095 debugfs_remove_recursive(dapm
->debugfs_dapm
);
2099 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2100 struct dentry
*parent
)
2104 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2108 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2115 * soc_dapm_connect_path() - Connects or disconnects a path
2116 * @path: The path to update
2117 * @connect: The new connect state of the path. True if the path is connected,
2118 * false if it is disconneted.
2119 * @reason: The reason why the path changed (for debugging only)
2121 static void soc_dapm_connect_path(struct snd_soc_dapm_path
*path
,
2122 bool connect
, const char *reason
)
2124 if (path
->connect
== connect
)
2127 path
->connect
= connect
;
2128 dapm_mark_dirty(path
->source
, reason
);
2129 dapm_mark_dirty(path
->sink
, reason
);
2130 dapm_path_invalidate(path
);
2133 /* test and update the power status of a mux widget */
2134 static int soc_dapm_mux_update_power(struct snd_soc_card
*card
,
2135 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
2137 struct snd_soc_dapm_path
*path
;
2141 lockdep_assert_held(&card
->dapm_mutex
);
2143 /* find dapm widget path assoc with kcontrol */
2144 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2146 /* we now need to match the string in the enum to the path */
2147 if (!(strcmp(path
->name
, e
->texts
[mux
])))
2152 soc_dapm_connect_path(path
, connect
, "mux update");
2156 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2161 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context
*dapm
,
2162 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
,
2163 struct snd_soc_dapm_update
*update
)
2165 struct snd_soc_card
*card
= dapm
->card
;
2168 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2169 card
->update
= update
;
2170 ret
= soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
2171 card
->update
= NULL
;
2172 mutex_unlock(&card
->dapm_mutex
);
2174 soc_dpcm_runtime_update(card
);
2177 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
2179 /* test and update the power status of a mixer or switch widget */
2180 static int soc_dapm_mixer_update_power(struct snd_soc_card
*card
,
2181 struct snd_kcontrol
*kcontrol
, int connect
)
2183 struct snd_soc_dapm_path
*path
;
2186 lockdep_assert_held(&card
->dapm_mutex
);
2188 /* find dapm widget path assoc with kcontrol */
2189 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2191 soc_dapm_connect_path(path
, connect
, "mixer update");
2195 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2200 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context
*dapm
,
2201 struct snd_kcontrol
*kcontrol
, int connect
,
2202 struct snd_soc_dapm_update
*update
)
2204 struct snd_soc_card
*card
= dapm
->card
;
2207 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2208 card
->update
= update
;
2209 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
2210 card
->update
= NULL
;
2211 mutex_unlock(&card
->dapm_mutex
);
2213 soc_dpcm_runtime_update(card
);
2216 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
2218 static ssize_t
dapm_widget_show_codec(struct snd_soc_codec
*codec
, char *buf
)
2220 struct snd_soc_dapm_widget
*w
;
2222 char *state
= "not set";
2224 list_for_each_entry(w
, &codec
->component
.card
->widgets
, list
) {
2225 if (w
->dapm
!= &codec
->dapm
)
2228 /* only display widgets that burnm power */
2230 case snd_soc_dapm_hp
:
2231 case snd_soc_dapm_mic
:
2232 case snd_soc_dapm_spk
:
2233 case snd_soc_dapm_line
:
2234 case snd_soc_dapm_micbias
:
2235 case snd_soc_dapm_dac
:
2236 case snd_soc_dapm_adc
:
2237 case snd_soc_dapm_pga
:
2238 case snd_soc_dapm_out_drv
:
2239 case snd_soc_dapm_mixer
:
2240 case snd_soc_dapm_mixer_named_ctl
:
2241 case snd_soc_dapm_supply
:
2242 case snd_soc_dapm_regulator_supply
:
2243 case snd_soc_dapm_clock_supply
:
2245 count
+= sprintf(buf
+ count
, "%s: %s\n",
2246 w
->name
, w
->power
? "On":"Off");
2253 switch (codec
->dapm
.bias_level
) {
2254 case SND_SOC_BIAS_ON
:
2257 case SND_SOC_BIAS_PREPARE
:
2260 case SND_SOC_BIAS_STANDBY
:
2263 case SND_SOC_BIAS_OFF
:
2267 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2272 /* show dapm widget status in sys fs */
2273 static ssize_t
dapm_widget_show(struct device
*dev
,
2274 struct device_attribute
*attr
, char *buf
)
2276 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2279 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2280 struct snd_soc_codec
*codec
= rtd
->codec_dais
[i
]->codec
;
2281 count
+= dapm_widget_show_codec(codec
, buf
+ count
);
2287 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2289 struct attribute
*soc_dapm_dev_attrs
[] = {
2290 &dev_attr_dapm_widget
.attr
,
2294 static void dapm_free_path(struct snd_soc_dapm_path
*path
)
2296 list_del(&path
->list_sink
);
2297 list_del(&path
->list_source
);
2298 list_del(&path
->list_kcontrol
);
2299 list_del(&path
->list
);
2303 /* free all dapm widgets and resources */
2304 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2306 struct snd_soc_dapm_widget
*w
, *next_w
;
2307 struct snd_soc_dapm_path
*p
, *next_p
;
2309 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2310 if (w
->dapm
!= dapm
)
2314 * remove source and sink paths associated to this widget.
2315 * While removing the path, remove reference to it from both
2316 * source and sink widgets so that path is removed only once.
2318 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
)
2321 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
)
2324 kfree(w
->kcontrols
);
2330 static struct snd_soc_dapm_widget
*dapm_find_widget(
2331 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2332 bool search_other_contexts
)
2334 struct snd_soc_dapm_widget
*w
;
2335 struct snd_soc_dapm_widget
*fallback
= NULL
;
2337 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2338 if (!strcmp(w
->name
, pin
)) {
2339 if (w
->dapm
== dapm
)
2346 if (search_other_contexts
)
2352 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2353 const char *pin
, int status
)
2355 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2357 dapm_assert_locked(dapm
);
2360 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2364 if (w
->connected
!= status
) {
2365 dapm_mark_dirty(w
, "pin configuration");
2366 dapm_widget_invalidate_input_paths(w
);
2367 dapm_widget_invalidate_output_paths(w
);
2370 w
->connected
= status
;
2378 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2379 * @dapm: DAPM context
2381 * Walks all dapm audio paths and powers widgets according to their
2382 * stream or path usage.
2384 * Requires external locking.
2386 * Returns 0 for success.
2388 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context
*dapm
)
2391 * Suppress early reports (eg, jacks syncing their state) to avoid
2392 * silly DAPM runs during card startup.
2394 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2397 return dapm_power_widgets(dapm
->card
, SND_SOC_DAPM_STREAM_NOP
);
2399 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked
);
2402 * snd_soc_dapm_sync - scan and power dapm paths
2403 * @dapm: DAPM context
2405 * Walks all dapm audio paths and powers widgets according to their
2406 * stream or path usage.
2408 * Returns 0 for success.
2410 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2414 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2415 ret
= snd_soc_dapm_sync_unlocked(dapm
);
2416 mutex_unlock(&dapm
->card
->dapm_mutex
);
2419 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2422 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2423 * @w: The widget for which to update the flags
2425 * Some widgets have a dynamic category which depends on which neighbors they
2426 * are connected to. This function update the category for these widgets.
2428 * This function must be called whenever a path is added or removed to a widget.
2430 static void dapm_update_widget_flags(struct snd_soc_dapm_widget
*w
)
2432 struct snd_soc_dapm_path
*p
;
2435 case snd_soc_dapm_input
:
2436 /* On a fully routed card a input is never a source */
2437 if (w
->dapm
->card
->fully_routed
)
2440 list_for_each_entry(p
, &w
->sources
, list_sink
) {
2441 if (p
->source
->id
== snd_soc_dapm_micbias
||
2442 p
->source
->id
== snd_soc_dapm_mic
||
2443 p
->source
->id
== snd_soc_dapm_line
||
2444 p
->source
->id
== snd_soc_dapm_output
) {
2450 case snd_soc_dapm_output
:
2451 /* On a fully routed card a output is never a sink */
2452 if (w
->dapm
->card
->fully_routed
)
2455 list_for_each_entry(p
, &w
->sinks
, list_source
) {
2456 if (p
->sink
->id
== snd_soc_dapm_spk
||
2457 p
->sink
->id
== snd_soc_dapm_hp
||
2458 p
->sink
->id
== snd_soc_dapm_line
||
2459 p
->sink
->id
== snd_soc_dapm_input
) {
2465 case snd_soc_dapm_line
:
2466 w
->is_sink
= !list_empty(&w
->sources
);
2467 w
->is_source
= !list_empty(&w
->sinks
);
2474 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context
*dapm
,
2475 struct snd_soc_dapm_widget
*source
, struct snd_soc_dapm_widget
*sink
,
2476 const char *control
)
2478 bool dynamic_source
= false;
2479 bool dynamic_sink
= false;
2484 switch (source
->id
) {
2485 case snd_soc_dapm_demux
:
2486 dynamic_source
= true;
2493 case snd_soc_dapm_mux
:
2494 case snd_soc_dapm_switch
:
2495 case snd_soc_dapm_mixer
:
2496 case snd_soc_dapm_mixer_named_ctl
:
2497 dynamic_sink
= true;
2503 if (dynamic_source
&& dynamic_sink
) {
2505 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2506 source
->name
, control
, sink
->name
);
2508 } else if (!dynamic_source
&& !dynamic_sink
) {
2510 "Control not supported for path %s -> [%s] -> %s\n",
2511 source
->name
, control
, sink
->name
);
2518 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
2519 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
2520 const char *control
,
2521 int (*connected
)(struct snd_soc_dapm_widget
*source
,
2522 struct snd_soc_dapm_widget
*sink
))
2524 struct snd_soc_dapm_path
*path
;
2527 if (wsink
->is_supply
&& !wsource
->is_supply
) {
2529 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2530 wsource
->name
, wsink
->name
);
2534 if (connected
&& !wsource
->is_supply
) {
2536 "connected() callback only supported for supply widgets (%s -> %s)\n",
2537 wsource
->name
, wsink
->name
);
2541 if (wsource
->is_supply
&& control
) {
2543 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2544 wsource
->name
, control
, wsink
->name
);
2548 ret
= snd_soc_dapm_check_dynamic_path(dapm
, wsource
, wsink
, control
);
2552 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2556 path
->source
= wsource
;
2558 path
->connected
= connected
;
2559 INIT_LIST_HEAD(&path
->list
);
2560 INIT_LIST_HEAD(&path
->list_kcontrol
);
2561 INIT_LIST_HEAD(&path
->list_source
);
2562 INIT_LIST_HEAD(&path
->list_sink
);
2564 if (wsource
->is_supply
|| wsink
->is_supply
)
2565 path
->is_supply
= 1;
2567 /* connect static paths */
2568 if (control
== NULL
) {
2571 switch (wsource
->id
) {
2572 case snd_soc_dapm_demux
:
2573 ret
= dapm_connect_mux(dapm
, path
, control
, wsource
);
2581 switch (wsink
->id
) {
2582 case snd_soc_dapm_mux
:
2583 ret
= dapm_connect_mux(dapm
, path
, control
, wsink
);
2587 case snd_soc_dapm_switch
:
2588 case snd_soc_dapm_mixer
:
2589 case snd_soc_dapm_mixer_named_ctl
:
2590 ret
= dapm_connect_mixer(dapm
, path
, control
);
2599 list_add(&path
->list
, &dapm
->card
->paths
);
2600 list_add(&path
->list_sink
, &wsink
->sources
);
2601 list_add(&path
->list_source
, &wsource
->sinks
);
2603 dapm_update_widget_flags(wsource
);
2604 dapm_update_widget_flags(wsink
);
2606 dapm_mark_dirty(wsource
, "Route added");
2607 dapm_mark_dirty(wsink
, "Route added");
2609 if (dapm
->card
->instantiated
&& path
->connect
)
2610 dapm_path_invalidate(path
);
2618 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2619 const struct snd_soc_dapm_route
*route
)
2621 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2622 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2625 char prefixed_sink
[80];
2626 char prefixed_source
[80];
2630 prefix
= soc_dapm_prefix(dapm
);
2632 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2633 prefix
, route
->sink
);
2634 sink
= prefixed_sink
;
2635 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2636 prefix
, route
->source
);
2637 source
= prefixed_source
;
2640 source
= route
->source
;
2643 wsource
= dapm_wcache_lookup(&dapm
->path_source_cache
, source
);
2644 wsink
= dapm_wcache_lookup(&dapm
->path_sink_cache
, sink
);
2646 if (wsink
&& wsource
)
2650 * find src and dest widgets over all widgets but favor a widget from
2651 * current DAPM context
2653 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2654 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2656 if (w
->dapm
== dapm
) {
2663 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2665 if (w
->dapm
== dapm
) {
2672 /* use widget from another DAPM context if not found from this */
2678 if (wsource
== NULL
) {
2679 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2683 if (wsink
== NULL
) {
2684 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2690 dapm_wcache_update(&dapm
->path_sink_cache
, wsink
);
2691 dapm_wcache_update(&dapm
->path_source_cache
, wsource
);
2693 ret
= snd_soc_dapm_add_path(dapm
, wsource
, wsink
, route
->control
,
2700 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2701 source
, route
->control
, sink
);
2705 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2706 const struct snd_soc_dapm_route
*route
)
2708 struct snd_soc_dapm_widget
*wsource
, *wsink
;
2709 struct snd_soc_dapm_path
*path
, *p
;
2712 char prefixed_sink
[80];
2713 char prefixed_source
[80];
2716 if (route
->control
) {
2718 "ASoC: Removal of routes with controls not supported\n");
2722 prefix
= soc_dapm_prefix(dapm
);
2724 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2725 prefix
, route
->sink
);
2726 sink
= prefixed_sink
;
2727 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2728 prefix
, route
->source
);
2729 source
= prefixed_source
;
2732 source
= route
->source
;
2736 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2737 if (strcmp(p
->source
->name
, source
) != 0)
2739 if (strcmp(p
->sink
->name
, sink
) != 0)
2746 wsource
= path
->source
;
2749 dapm_mark_dirty(wsource
, "Route removed");
2750 dapm_mark_dirty(wsink
, "Route removed");
2752 dapm_path_invalidate(path
);
2754 dapm_free_path(path
);
2756 /* Update any path related flags */
2757 dapm_update_widget_flags(wsource
);
2758 dapm_update_widget_flags(wsink
);
2760 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
2768 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2769 * @dapm: DAPM context
2770 * @route: audio routes
2771 * @num: number of routes
2773 * Connects 2 dapm widgets together via a named audio path. The sink is
2774 * the widget receiving the audio signal, whilst the source is the sender
2775 * of the audio signal.
2777 * Returns 0 for success else error. On error all resources can be freed
2778 * with a call to snd_soc_card_free().
2780 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2781 const struct snd_soc_dapm_route
*route
, int num
)
2785 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2786 for (i
= 0; i
< num
; i
++) {
2787 r
= snd_soc_dapm_add_route(dapm
, route
);
2789 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
2791 route
->control
? route
->control
: "direct",
2797 mutex_unlock(&dapm
->card
->dapm_mutex
);
2801 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2804 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2805 * @dapm: DAPM context
2806 * @route: audio routes
2807 * @num: number of routes
2809 * Removes routes from the DAPM context.
2811 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2812 const struct snd_soc_dapm_route
*route
, int num
)
2816 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2817 for (i
= 0; i
< num
; i
++) {
2818 snd_soc_dapm_del_route(dapm
, route
);
2821 mutex_unlock(&dapm
->card
->dapm_mutex
);
2825 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2827 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2828 const struct snd_soc_dapm_route
*route
)
2830 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2833 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2836 struct snd_soc_dapm_path
*path
;
2840 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
2846 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
2851 if (route
->control
|| route
->connected
)
2852 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
2853 route
->source
, route
->sink
);
2855 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2856 if (path
->sink
== sink
) {
2863 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
2864 route
->source
, route
->sink
);
2866 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
2867 count
, route
->source
, route
->sink
);
2873 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2874 * @dapm: DAPM context
2875 * @route: audio routes
2876 * @num: number of routes
2878 * Mark existing routes matching those specified in the passed array
2879 * as being weak, meaning that they are ignored for the purpose of
2880 * power decisions. The main intended use case is for sidetone paths
2881 * which couple audio between other independent paths if they are both
2882 * active in order to make the combination work better at the user
2883 * level but which aren't intended to be "used".
2885 * Note that CODEC drivers should not use this as sidetone type paths
2886 * can frequently also be used as bypass paths.
2888 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2889 const struct snd_soc_dapm_route
*route
, int num
)
2894 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2895 for (i
= 0; i
< num
; i
++) {
2896 err
= snd_soc_dapm_weak_route(dapm
, route
);
2901 mutex_unlock(&dapm
->card
->dapm_mutex
);
2905 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2908 * snd_soc_dapm_new_widgets - add new dapm widgets
2909 * @dapm: DAPM context
2911 * Checks the codec for any new dapm widgets and creates them if found.
2913 * Returns 0 for success.
2915 int snd_soc_dapm_new_widgets(struct snd_soc_card
*card
)
2917 struct snd_soc_dapm_widget
*w
;
2920 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2922 list_for_each_entry(w
, &card
->widgets
, list
)
2927 if (w
->num_kcontrols
) {
2928 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2929 sizeof(struct snd_kcontrol
*),
2931 if (!w
->kcontrols
) {
2932 mutex_unlock(&card
->dapm_mutex
);
2938 case snd_soc_dapm_switch
:
2939 case snd_soc_dapm_mixer
:
2940 case snd_soc_dapm_mixer_named_ctl
:
2943 case snd_soc_dapm_mux
:
2944 case snd_soc_dapm_demux
:
2947 case snd_soc_dapm_pga
:
2948 case snd_soc_dapm_out_drv
:
2951 case snd_soc_dapm_dai_link
:
2952 dapm_new_dai_link(w
);
2958 /* Read the initial power state from the device */
2960 soc_dapm_read(w
->dapm
, w
->reg
, &val
);
2961 val
= val
>> w
->shift
;
2963 if (val
== w
->on_val
)
2969 dapm_mark_dirty(w
, "new widget");
2970 dapm_debugfs_add_widget(w
);
2973 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2974 mutex_unlock(&card
->dapm_mutex
);
2977 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2980 * snd_soc_dapm_get_volsw - dapm mixer get callback
2981 * @kcontrol: mixer control
2982 * @ucontrol: control element information
2984 * Callback to get the value of a dapm mixer control.
2986 * Returns 0 for success.
2988 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2989 struct snd_ctl_elem_value
*ucontrol
)
2991 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
2992 struct snd_soc_card
*card
= dapm
->card
;
2993 struct soc_mixer_control
*mc
=
2994 (struct soc_mixer_control
*)kcontrol
->private_value
;
2996 unsigned int shift
= mc
->shift
;
2998 unsigned int mask
= (1 << fls(max
)) - 1;
2999 unsigned int invert
= mc
->invert
;
3003 if (snd_soc_volsw_is_stereo(mc
))
3005 "ASoC: Control '%s' is stereo, which is not supported\n",
3008 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3009 if (dapm_kcontrol_is_powered(kcontrol
) && reg
!= SND_SOC_NOPM
) {
3010 ret
= soc_dapm_read(dapm
, reg
, &val
);
3011 val
= (val
>> shift
) & mask
;
3013 val
= dapm_kcontrol_get_value(kcontrol
);
3015 mutex_unlock(&card
->dapm_mutex
);
3018 ucontrol
->value
.integer
.value
[0] = max
- val
;
3020 ucontrol
->value
.integer
.value
[0] = val
;
3024 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
3027 * snd_soc_dapm_put_volsw - dapm mixer set callback
3028 * @kcontrol: mixer control
3029 * @ucontrol: control element information
3031 * Callback to set the value of a dapm mixer control.
3033 * Returns 0 for success.
3035 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
3036 struct snd_ctl_elem_value
*ucontrol
)
3038 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3039 struct snd_soc_card
*card
= dapm
->card
;
3040 struct soc_mixer_control
*mc
=
3041 (struct soc_mixer_control
*)kcontrol
->private_value
;
3043 unsigned int shift
= mc
->shift
;
3045 unsigned int mask
= (1 << fls(max
)) - 1;
3046 unsigned int invert
= mc
->invert
;
3048 int connect
, change
, reg_change
= 0;
3049 struct snd_soc_dapm_update update
;
3052 if (snd_soc_volsw_is_stereo(mc
))
3054 "ASoC: Control '%s' is stereo, which is not supported\n",
3057 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
3063 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3065 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3067 if (reg
!= SND_SOC_NOPM
) {
3068 mask
= mask
<< shift
;
3071 reg_change
= soc_dapm_test_bits(dapm
, reg
, mask
, val
);
3074 if (change
|| reg_change
) {
3076 update
.kcontrol
= kcontrol
;
3080 card
->update
= &update
;
3082 change
|= reg_change
;
3084 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
3086 card
->update
= NULL
;
3089 mutex_unlock(&card
->dapm_mutex
);
3092 soc_dpcm_runtime_update(card
);
3096 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
3099 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3100 * @kcontrol: mixer control
3101 * @ucontrol: control element information
3103 * Callback to get the value of a dapm enumerated double mixer control.
3105 * Returns 0 for success.
3107 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
3108 struct snd_ctl_elem_value
*ucontrol
)
3110 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3111 struct snd_soc_card
*card
= dapm
->card
;
3112 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3113 unsigned int reg_val
, val
;
3115 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3116 if (e
->reg
!= SND_SOC_NOPM
&& dapm_kcontrol_is_powered(kcontrol
)) {
3117 int ret
= soc_dapm_read(dapm
, e
->reg
, ®_val
);
3119 mutex_unlock(&card
->dapm_mutex
);
3123 reg_val
= dapm_kcontrol_get_value(kcontrol
);
3125 mutex_unlock(&card
->dapm_mutex
);
3127 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
3128 ucontrol
->value
.enumerated
.item
[0] = snd_soc_enum_val_to_item(e
, val
);
3129 if (e
->shift_l
!= e
->shift_r
) {
3130 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
3131 val
= snd_soc_enum_val_to_item(e
, val
);
3132 ucontrol
->value
.enumerated
.item
[1] = val
;
3137 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
3140 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3141 * @kcontrol: mixer control
3142 * @ucontrol: control element information
3144 * Callback to set the value of a dapm enumerated double mixer control.
3146 * Returns 0 for success.
3148 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
3149 struct snd_ctl_elem_value
*ucontrol
)
3151 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3152 struct snd_soc_card
*card
= dapm
->card
;
3153 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3154 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
3155 unsigned int val
, change
, reg_change
= 0;
3157 struct snd_soc_dapm_update update
;
3160 if (item
[0] >= e
->items
)
3163 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
3164 mask
= e
->mask
<< e
->shift_l
;
3165 if (e
->shift_l
!= e
->shift_r
) {
3166 if (item
[1] > e
->items
)
3168 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_l
;
3169 mask
|= e
->mask
<< e
->shift_r
;
3172 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3174 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3176 if (e
->reg
!= SND_SOC_NOPM
)
3177 reg_change
= soc_dapm_test_bits(dapm
, e
->reg
, mask
, val
);
3179 if (change
|| reg_change
) {
3181 update
.kcontrol
= kcontrol
;
3182 update
.reg
= e
->reg
;
3185 card
->update
= &update
;
3187 change
|= reg_change
;
3189 ret
= soc_dapm_mux_update_power(card
, kcontrol
, item
[0], e
);
3191 card
->update
= NULL
;
3194 mutex_unlock(&card
->dapm_mutex
);
3197 soc_dpcm_runtime_update(card
);
3201 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
3204 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3206 * @kcontrol: mixer control
3207 * @uinfo: control element information
3209 * Callback to provide information about a pin switch control.
3211 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
3212 struct snd_ctl_elem_info
*uinfo
)
3214 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
3216 uinfo
->value
.integer
.min
= 0;
3217 uinfo
->value
.integer
.max
= 1;
3221 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
3224 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3226 * @kcontrol: mixer control
3229 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
3230 struct snd_ctl_elem_value
*ucontrol
)
3232 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3233 const char *pin
= (const char *)kcontrol
->private_value
;
3235 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3237 ucontrol
->value
.integer
.value
[0] =
3238 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
3240 mutex_unlock(&card
->dapm_mutex
);
3244 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
3247 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3249 * @kcontrol: mixer control
3252 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3253 struct snd_ctl_elem_value
*ucontrol
)
3255 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3256 const char *pin
= (const char *)kcontrol
->private_value
;
3258 if (ucontrol
->value
.integer
.value
[0])
3259 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3261 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3263 snd_soc_dapm_sync(&card
->dapm
);
3266 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3268 struct snd_soc_dapm_widget
*
3269 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3270 const struct snd_soc_dapm_widget
*widget
)
3272 struct snd_soc_dapm_widget
*w
;
3274 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3275 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3278 "ASoC: Failed to create DAPM control %s\n",
3281 mutex_unlock(&dapm
->card
->dapm_mutex
);
3285 struct snd_soc_dapm_widget
*
3286 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context
*dapm
,
3287 const struct snd_soc_dapm_widget
*widget
)
3289 struct snd_soc_dapm_widget
*w
;
3293 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3297 case snd_soc_dapm_regulator_supply
:
3298 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3299 if (IS_ERR(w
->regulator
)) {
3300 ret
= PTR_ERR(w
->regulator
);
3301 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3306 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3307 ret
= regulator_allow_bypass(w
->regulator
, true);
3309 dev_warn(w
->dapm
->dev
,
3310 "ASoC: Failed to bypass %s: %d\n",
3314 case snd_soc_dapm_clock_supply
:
3315 #ifdef CONFIG_CLKDEV_LOOKUP
3316 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3317 if (IS_ERR(w
->clk
)) {
3318 ret
= PTR_ERR(w
->clk
);
3319 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3331 prefix
= soc_dapm_prefix(dapm
);
3333 w
->name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, widget
->name
);
3335 w
->name
= kasprintf(GFP_KERNEL
, "%s", widget
->name
);
3337 if (w
->name
== NULL
) {
3343 case snd_soc_dapm_mic
:
3345 w
->power_check
= dapm_generic_check_power
;
3347 case snd_soc_dapm_input
:
3348 if (!dapm
->card
->fully_routed
)
3350 w
->power_check
= dapm_generic_check_power
;
3352 case snd_soc_dapm_spk
:
3353 case snd_soc_dapm_hp
:
3355 w
->power_check
= dapm_generic_check_power
;
3357 case snd_soc_dapm_output
:
3358 if (!dapm
->card
->fully_routed
)
3360 w
->power_check
= dapm_generic_check_power
;
3362 case snd_soc_dapm_vmid
:
3363 case snd_soc_dapm_siggen
:
3365 w
->power_check
= dapm_always_on_check_power
;
3367 case snd_soc_dapm_mux
:
3368 case snd_soc_dapm_demux
:
3369 case snd_soc_dapm_switch
:
3370 case snd_soc_dapm_mixer
:
3371 case snd_soc_dapm_mixer_named_ctl
:
3372 case snd_soc_dapm_adc
:
3373 case snd_soc_dapm_aif_out
:
3374 case snd_soc_dapm_dac
:
3375 case snd_soc_dapm_aif_in
:
3376 case snd_soc_dapm_pga
:
3377 case snd_soc_dapm_out_drv
:
3378 case snd_soc_dapm_micbias
:
3379 case snd_soc_dapm_line
:
3380 case snd_soc_dapm_dai_link
:
3381 case snd_soc_dapm_dai_out
:
3382 case snd_soc_dapm_dai_in
:
3383 w
->power_check
= dapm_generic_check_power
;
3385 case snd_soc_dapm_supply
:
3386 case snd_soc_dapm_regulator_supply
:
3387 case snd_soc_dapm_clock_supply
:
3388 case snd_soc_dapm_kcontrol
:
3390 w
->power_check
= dapm_supply_check_power
;
3393 w
->power_check
= dapm_always_on_check_power
;
3398 INIT_LIST_HEAD(&w
->sources
);
3399 INIT_LIST_HEAD(&w
->sinks
);
3400 INIT_LIST_HEAD(&w
->list
);
3401 INIT_LIST_HEAD(&w
->dirty
);
3402 list_add_tail(&w
->list
, &dapm
->card
->widgets
);
3407 /* machine layer set ups unconnected pins and insertions */
3413 * snd_soc_dapm_new_controls - create new dapm controls
3414 * @dapm: DAPM context
3415 * @widget: widget array
3416 * @num: number of widgets
3418 * Creates new DAPM controls based upon the templates.
3420 * Returns 0 for success else error.
3422 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3423 const struct snd_soc_dapm_widget
*widget
,
3426 struct snd_soc_dapm_widget
*w
;
3430 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3431 for (i
= 0; i
< num
; i
++) {
3432 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3435 "ASoC: Failed to create DAPM control %s\n",
3442 mutex_unlock(&dapm
->card
->dapm_mutex
);
3445 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3447 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3448 struct snd_kcontrol
*kcontrol
, int event
)
3450 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3451 struct snd_soc_dai
*source
, *sink
;
3452 const struct snd_soc_pcm_stream
*config
= w
->params
+ w
->params_select
;
3453 struct snd_pcm_substream substream
;
3454 struct snd_pcm_hw_params
*params
= NULL
;
3458 if (WARN_ON(!config
) ||
3459 WARN_ON(list_empty(&w
->sources
) || list_empty(&w
->sinks
)))
3462 /* We only support a single source and sink, pick the first */
3463 source_p
= list_first_entry(&w
->sources
, struct snd_soc_dapm_path
,
3465 sink_p
= list_first_entry(&w
->sinks
, struct snd_soc_dapm_path
,
3468 if (WARN_ON(!source_p
|| !sink_p
) ||
3469 WARN_ON(!sink_p
->source
|| !source_p
->sink
) ||
3470 WARN_ON(!source_p
->source
|| !sink_p
->sink
))
3473 source
= source_p
->source
->priv
;
3474 sink
= sink_p
->sink
->priv
;
3476 /* Be a little careful as we don't want to overflow the mask array */
3477 if (config
->formats
) {
3478 fmt
= ffs(config
->formats
) - 1;
3480 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3485 /* Currently very limited parameter selection */
3486 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3491 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3493 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3495 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3498 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3499 = config
->channels_min
;
3500 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3501 = config
->channels_max
;
3503 memset(&substream
, 0, sizeof(substream
));
3506 case SND_SOC_DAPM_PRE_PMU
:
3507 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3508 ret
= soc_dai_hw_params(&substream
, params
, source
);
3512 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3513 ret
= soc_dai_hw_params(&substream
, params
, sink
);
3518 case SND_SOC_DAPM_POST_PMU
:
3519 ret
= snd_soc_dai_digital_mute(sink
, 0,
3520 SNDRV_PCM_STREAM_PLAYBACK
);
3521 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3522 dev_warn(sink
->dev
, "ASoC: Failed to unmute: %d\n", ret
);
3526 case SND_SOC_DAPM_PRE_PMD
:
3527 ret
= snd_soc_dai_digital_mute(sink
, 1,
3528 SNDRV_PCM_STREAM_PLAYBACK
);
3529 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3530 dev_warn(sink
->dev
, "ASoC: Failed to mute: %d\n", ret
);
3535 WARN(1, "Unknown event %d\n", event
);
3544 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol
*kcontrol
,
3545 struct snd_ctl_elem_value
*ucontrol
)
3547 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
3549 ucontrol
->value
.integer
.value
[0] = w
->params_select
;
3554 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol
*kcontrol
,
3555 struct snd_ctl_elem_value
*ucontrol
)
3557 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
3559 /* Can't change the config when widget is already powered */
3563 if (ucontrol
->value
.integer
.value
[0] == w
->params_select
)
3566 if (ucontrol
->value
.integer
.value
[0] >= w
->num_params
)
3569 w
->params_select
= ucontrol
->value
.integer
.value
[0];
3574 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3575 const struct snd_soc_pcm_stream
*params
,
3576 unsigned int num_params
,
3577 struct snd_soc_dapm_widget
*source
,
3578 struct snd_soc_dapm_widget
*sink
)
3580 struct snd_soc_dapm_widget
template;
3581 struct snd_soc_dapm_widget
*w
;
3584 unsigned long private_value
;
3585 const char **w_param_text
;
3586 struct soc_enum w_param_enum
[] = {
3587 SOC_ENUM_SINGLE(0, 0, 0, NULL
),
3589 struct snd_kcontrol_new kcontrol_dai_link
[] = {
3590 SOC_ENUM_EXT(NULL
, w_param_enum
[0],
3591 snd_soc_dapm_dai_link_get
,
3592 snd_soc_dapm_dai_link_put
),
3594 const struct snd_soc_pcm_stream
*config
= params
;
3596 w_param_text
= devm_kcalloc(card
->dev
, num_params
,
3597 sizeof(char *), GFP_KERNEL
);
3601 link_name
= devm_kasprintf(card
->dev
, GFP_KERNEL
, "%s-%s",
3602 source
->name
, sink
->name
);
3605 goto outfree_w_param
;
3608 for (count
= 0 ; count
< num_params
; count
++) {
3609 if (!config
->stream_name
) {
3610 dev_warn(card
->dapm
.dev
,
3611 "ASoC: anonymous config %d for dai link %s\n",
3613 w_param_text
[count
] =
3614 devm_kasprintf(card
->dev
, GFP_KERNEL
,
3615 "Anonymous Configuration %d",
3617 if (!w_param_text
[count
]) {
3619 goto outfree_link_name
;
3622 w_param_text
[count
] = devm_kmemdup(card
->dev
,
3623 config
->stream_name
,
3624 strlen(config
->stream_name
) + 1,
3626 if (!w_param_text
[count
]) {
3628 goto outfree_link_name
;
3633 w_param_enum
[0].items
= num_params
;
3634 w_param_enum
[0].texts
= w_param_text
;
3636 memset(&template, 0, sizeof(template));
3637 template.reg
= SND_SOC_NOPM
;
3638 template.id
= snd_soc_dapm_dai_link
;
3639 template.name
= link_name
;
3640 template.event
= snd_soc_dai_link_event
;
3641 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3642 SND_SOC_DAPM_PRE_PMD
;
3643 template.num_kcontrols
= 1;
3644 /* duplicate w_param_enum on heap so that memory persists */
3646 (unsigned long) devm_kmemdup(card
->dev
,
3647 (void *)(kcontrol_dai_link
[0].private_value
),
3648 sizeof(struct soc_enum
), GFP_KERNEL
);
3649 if (!private_value
) {
3650 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
3653 goto outfree_link_name
;
3655 kcontrol_dai_link
[0].private_value
= private_value
;
3656 /* duplicate kcontrol_dai_link on heap so that memory persists */
3657 template.kcontrol_news
=
3658 devm_kmemdup(card
->dev
, &kcontrol_dai_link
[0],
3659 sizeof(struct snd_kcontrol_new
),
3661 if (!template.kcontrol_news
) {
3662 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
3665 goto outfree_private_value
;
3668 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
3670 w
= snd_soc_dapm_new_control_unlocked(&card
->dapm
, &template);
3672 dev_err(card
->dev
, "ASoC: Failed to create %s widget\n",
3675 goto outfree_kcontrol_news
;
3679 w
->num_params
= num_params
;
3681 ret
= snd_soc_dapm_add_path(&card
->dapm
, source
, w
, NULL
, NULL
);
3684 return snd_soc_dapm_add_path(&card
->dapm
, w
, sink
, NULL
, NULL
);
3687 devm_kfree(card
->dev
, w
);
3688 outfree_kcontrol_news
:
3689 devm_kfree(card
->dev
, (void *)template.kcontrol_news
);
3690 outfree_private_value
:
3691 devm_kfree(card
->dev
, (void *)private_value
);
3693 devm_kfree(card
->dev
, link_name
);
3695 for (count
= 0 ; count
< num_params
; count
++)
3696 devm_kfree(card
->dev
, (void *)w_param_text
[count
]);
3697 devm_kfree(card
->dev
, w_param_text
);
3702 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3703 struct snd_soc_dai
*dai
)
3705 struct snd_soc_dapm_widget
template;
3706 struct snd_soc_dapm_widget
*w
;
3708 WARN_ON(dapm
->dev
!= dai
->dev
);
3710 memset(&template, 0, sizeof(template));
3711 template.reg
= SND_SOC_NOPM
;
3713 if (dai
->driver
->playback
.stream_name
) {
3714 template.id
= snd_soc_dapm_dai_in
;
3715 template.name
= dai
->driver
->playback
.stream_name
;
3716 template.sname
= dai
->driver
->playback
.stream_name
;
3718 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3721 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
3723 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3724 dai
->driver
->playback
.stream_name
);
3729 dai
->playback_widget
= w
;
3732 if (dai
->driver
->capture
.stream_name
) {
3733 template.id
= snd_soc_dapm_dai_out
;
3734 template.name
= dai
->driver
->capture
.stream_name
;
3735 template.sname
= dai
->driver
->capture
.stream_name
;
3737 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3740 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
3742 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3743 dai
->driver
->capture
.stream_name
);
3748 dai
->capture_widget
= w
;
3754 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3756 struct snd_soc_dapm_widget
*dai_w
, *w
;
3757 struct snd_soc_dapm_widget
*src
, *sink
;
3758 struct snd_soc_dai
*dai
;
3760 /* For each DAI widget... */
3761 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3762 switch (dai_w
->id
) {
3763 case snd_soc_dapm_dai_in
:
3764 case snd_soc_dapm_dai_out
:
3772 /* ...find all widgets with the same stream and link them */
3773 list_for_each_entry(w
, &card
->widgets
, list
) {
3774 if (w
->dapm
!= dai_w
->dapm
)
3778 case snd_soc_dapm_dai_in
:
3779 case snd_soc_dapm_dai_out
:
3785 if (!w
->sname
|| !strstr(w
->sname
, dai_w
->name
))
3788 if (dai_w
->id
== snd_soc_dapm_dai_in
) {
3795 dev_dbg(dai
->dev
, "%s -> %s\n", src
->name
, sink
->name
);
3796 snd_soc_dapm_add_path(w
->dapm
, src
, sink
, NULL
, NULL
);
3803 static void dapm_connect_dai_link_widgets(struct snd_soc_card
*card
,
3804 struct snd_soc_pcm_runtime
*rtd
)
3806 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3807 struct snd_soc_dapm_widget
*sink
, *source
;
3810 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
3811 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
3813 /* there is no point in connecting BE DAI links with dummies */
3814 if (snd_soc_dai_is_dummy(codec_dai
) ||
3815 snd_soc_dai_is_dummy(cpu_dai
))
3818 /* connect BE DAI playback if widgets are valid */
3819 if (codec_dai
->playback_widget
&& cpu_dai
->playback_widget
) {
3820 source
= cpu_dai
->playback_widget
;
3821 sink
= codec_dai
->playback_widget
;
3822 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3823 cpu_dai
->component
->name
, source
->name
,
3824 codec_dai
->component
->name
, sink
->name
);
3826 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3830 /* connect BE DAI capture if widgets are valid */
3831 if (codec_dai
->capture_widget
&& cpu_dai
->capture_widget
) {
3832 source
= codec_dai
->capture_widget
;
3833 sink
= cpu_dai
->capture_widget
;
3834 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3835 codec_dai
->component
->name
, source
->name
,
3836 cpu_dai
->component
->name
, sink
->name
);
3838 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3844 static void soc_dapm_dai_stream_event(struct snd_soc_dai
*dai
, int stream
,
3847 struct snd_soc_dapm_widget
*w
;
3849 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
3850 w
= dai
->playback_widget
;
3852 w
= dai
->capture_widget
;
3855 dapm_mark_dirty(w
, "stream event");
3858 case SND_SOC_DAPM_STREAM_START
:
3861 case SND_SOC_DAPM_STREAM_STOP
:
3864 case SND_SOC_DAPM_STREAM_SUSPEND
:
3865 case SND_SOC_DAPM_STREAM_RESUME
:
3866 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3867 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3871 if (w
->id
== snd_soc_dapm_dai_in
) {
3872 w
->is_source
= w
->active
;
3873 dapm_widget_invalidate_input_paths(w
);
3875 w
->is_sink
= w
->active
;
3876 dapm_widget_invalidate_output_paths(w
);
3881 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card
*card
)
3883 struct snd_soc_pcm_runtime
*rtd
= card
->rtd
;
3886 /* for each BE DAI link... */
3887 for (i
= 0; i
< card
->num_rtd
; i
++) {
3888 rtd
= &card
->rtd
[i
];
3891 * dynamic FE links have no fixed DAI mapping.
3892 * CODEC<->CODEC links have no direct connection.
3894 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->params
)
3897 dapm_connect_dai_link_widgets(card
, rtd
);
3901 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3906 soc_dapm_dai_stream_event(rtd
->cpu_dai
, stream
, event
);
3907 for (i
= 0; i
< rtd
->num_codecs
; i
++)
3908 soc_dapm_dai_stream_event(rtd
->codec_dais
[i
], stream
, event
);
3910 dapm_power_widgets(rtd
->card
, event
);
3914 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3915 * @rtd: PCM runtime data
3916 * @stream: stream name
3917 * @event: stream event
3919 * Sends a stream event to the dapm core. The core then makes any
3920 * necessary widget power changes.
3922 * Returns 0 for success else error.
3924 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3927 struct snd_soc_card
*card
= rtd
->card
;
3929 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3930 soc_dapm_stream_event(rtd
, stream
, event
);
3931 mutex_unlock(&card
->dapm_mutex
);
3935 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3936 * @dapm: DAPM context
3939 * Enables input/output pin and its parents or children widgets iff there is
3940 * a valid audio route and active audio stream.
3942 * Requires external locking.
3944 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3945 * do any widget power switching.
3947 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
3950 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
3952 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked
);
3955 * snd_soc_dapm_enable_pin - enable pin.
3956 * @dapm: DAPM context
3959 * Enables input/output pin and its parents or children widgets iff there is
3960 * a valid audio route and active audio stream.
3962 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3963 * do any widget power switching.
3965 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3969 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3971 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 1);
3973 mutex_unlock(&dapm
->card
->dapm_mutex
);
3977 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
3980 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3981 * @dapm: DAPM context
3984 * Enables input/output pin regardless of any other state. This is
3985 * intended for use with microphone bias supplies used in microphone
3988 * Requires external locking.
3990 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3991 * do any widget power switching.
3993 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
3996 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3999 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4003 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
4004 if (!w
->connected
) {
4006 * w->force does not affect the number of input or output paths,
4007 * so we only have to recheck if w->connected is changed
4009 dapm_widget_invalidate_input_paths(w
);
4010 dapm_widget_invalidate_output_paths(w
);
4014 dapm_mark_dirty(w
, "force enable");
4018 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked
);
4021 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4022 * @dapm: DAPM context
4025 * Enables input/output pin regardless of any other state. This is
4026 * intended for use with microphone bias supplies used in microphone
4029 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4030 * do any widget power switching.
4032 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
4037 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4039 ret
= snd_soc_dapm_force_enable_pin_unlocked(dapm
, pin
);
4041 mutex_unlock(&dapm
->card
->dapm_mutex
);
4045 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
4048 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4049 * @dapm: DAPM context
4052 * Disables input/output pin and its parents or children widgets.
4054 * Requires external locking.
4056 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4057 * do any widget power switching.
4059 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4062 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4064 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked
);
4067 * snd_soc_dapm_disable_pin - disable pin.
4068 * @dapm: DAPM context
4071 * Disables input/output pin and its parents or children widgets.
4073 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4074 * do any widget power switching.
4076 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
4081 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4083 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4085 mutex_unlock(&dapm
->card
->dapm_mutex
);
4089 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
4092 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4093 * @dapm: DAPM context
4096 * Marks the specified pin as being not connected, disabling it along
4097 * any parent or child widgets. At present this is identical to
4098 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4099 * additional things such as disabling controls which only affect
4100 * paths through the pin.
4102 * Requires external locking.
4104 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4105 * do any widget power switching.
4107 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4110 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4112 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked
);
4115 * snd_soc_dapm_nc_pin - permanently disable pin.
4116 * @dapm: DAPM context
4119 * Marks the specified pin as being not connected, disabling it along
4120 * any parent or child widgets. At present this is identical to
4121 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4122 * additional things such as disabling controls which only affect
4123 * paths through the pin.
4125 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4126 * do any widget power switching.
4128 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
4132 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4134 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4136 mutex_unlock(&dapm
->card
->dapm_mutex
);
4140 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
4143 * snd_soc_dapm_get_pin_status - get audio pin status
4144 * @dapm: DAPM context
4145 * @pin: audio signal pin endpoint (or start point)
4147 * Get audio pin status - connected or disconnected.
4149 * Returns 1 for connected otherwise 0.
4151 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
4154 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
4157 return w
->connected
;
4161 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
4164 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4165 * @dapm: DAPM context
4166 * @pin: audio signal pin endpoint (or start point)
4168 * Mark the given endpoint or pin as ignoring suspend. When the
4169 * system is disabled a path between two endpoints flagged as ignoring
4170 * suspend will not be disabled. The path must already be enabled via
4171 * normal means at suspend time, it will not be turned on if it was not
4174 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
4177 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
4180 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4184 w
->ignore_suspend
= 1;
4188 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
4191 * snd_soc_dapm_free - free dapm resources
4192 * @dapm: DAPM context
4194 * Free all dapm widgets and resources.
4196 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
4198 dapm_debugfs_cleanup(dapm
);
4199 dapm_free_widgets(dapm
);
4200 list_del(&dapm
->list
);
4202 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
4204 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context
*dapm
)
4206 struct snd_soc_card
*card
= dapm
->card
;
4207 struct snd_soc_dapm_widget
*w
;
4208 LIST_HEAD(down_list
);
4211 mutex_lock(&card
->dapm_mutex
);
4213 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
4214 if (w
->dapm
!= dapm
)
4217 dapm_seq_insert(w
, &down_list
, false);
4223 /* If there were no widgets to power down we're already in
4227 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
4228 snd_soc_dapm_set_bias_level(dapm
,
4229 SND_SOC_BIAS_PREPARE
);
4230 dapm_seq_run(card
, &down_list
, 0, false);
4231 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
4232 snd_soc_dapm_set_bias_level(dapm
,
4233 SND_SOC_BIAS_STANDBY
);
4236 mutex_unlock(&card
->dapm_mutex
);
4240 * snd_soc_dapm_shutdown - callback for system shutdown
4242 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
4244 struct snd_soc_dapm_context
*dapm
;
4246 list_for_each_entry(dapm
, &card
->dapm_list
, list
) {
4247 if (dapm
!= &card
->dapm
) {
4248 soc_dapm_shutdown_dapm(dapm
);
4249 if (dapm
->bias_level
== SND_SOC_BIAS_STANDBY
)
4250 snd_soc_dapm_set_bias_level(dapm
,
4255 soc_dapm_shutdown_dapm(&card
->dapm
);
4256 if (card
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
4257 snd_soc_dapm_set_bias_level(&card
->dapm
,
4261 /* Module information */
4262 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4263 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4264 MODULE_LICENSE("GPL");