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 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
51 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
53 #define snd_soc_dapm_for_each_direction(dir) \
54 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
57 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
58 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
60 int (*connected
)(struct snd_soc_dapm_widget
*source
,
61 struct snd_soc_dapm_widget
*sink
));
63 struct snd_soc_dapm_widget
*
64 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
65 const struct snd_soc_dapm_widget
*widget
);
67 struct snd_soc_dapm_widget
*
68 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context
*dapm
,
69 const struct snd_soc_dapm_widget
*widget
);
71 /* dapm power sequences - make this per codec in the future */
72 static int dapm_up_seq
[] = {
73 [snd_soc_dapm_pre
] = 0,
74 [snd_soc_dapm_regulator_supply
] = 1,
75 [snd_soc_dapm_clock_supply
] = 1,
76 [snd_soc_dapm_supply
] = 2,
77 [snd_soc_dapm_micbias
] = 3,
78 [snd_soc_dapm_dai_link
] = 2,
79 [snd_soc_dapm_dai_in
] = 4,
80 [snd_soc_dapm_dai_out
] = 4,
81 [snd_soc_dapm_aif_in
] = 4,
82 [snd_soc_dapm_aif_out
] = 4,
83 [snd_soc_dapm_mic
] = 5,
84 [snd_soc_dapm_mux
] = 6,
85 [snd_soc_dapm_demux
] = 6,
86 [snd_soc_dapm_dac
] = 7,
87 [snd_soc_dapm_switch
] = 8,
88 [snd_soc_dapm_mixer
] = 8,
89 [snd_soc_dapm_mixer_named_ctl
] = 8,
90 [snd_soc_dapm_pga
] = 9,
91 [snd_soc_dapm_adc
] = 10,
92 [snd_soc_dapm_out_drv
] = 11,
93 [snd_soc_dapm_hp
] = 11,
94 [snd_soc_dapm_spk
] = 11,
95 [snd_soc_dapm_line
] = 11,
96 [snd_soc_dapm_kcontrol
] = 12,
97 [snd_soc_dapm_post
] = 13,
100 static int dapm_down_seq
[] = {
101 [snd_soc_dapm_pre
] = 0,
102 [snd_soc_dapm_kcontrol
] = 1,
103 [snd_soc_dapm_adc
] = 2,
104 [snd_soc_dapm_hp
] = 3,
105 [snd_soc_dapm_spk
] = 3,
106 [snd_soc_dapm_line
] = 3,
107 [snd_soc_dapm_out_drv
] = 3,
108 [snd_soc_dapm_pga
] = 4,
109 [snd_soc_dapm_switch
] = 5,
110 [snd_soc_dapm_mixer_named_ctl
] = 5,
111 [snd_soc_dapm_mixer
] = 5,
112 [snd_soc_dapm_dac
] = 6,
113 [snd_soc_dapm_mic
] = 7,
114 [snd_soc_dapm_micbias
] = 8,
115 [snd_soc_dapm_mux
] = 9,
116 [snd_soc_dapm_demux
] = 9,
117 [snd_soc_dapm_aif_in
] = 10,
118 [snd_soc_dapm_aif_out
] = 10,
119 [snd_soc_dapm_dai_in
] = 10,
120 [snd_soc_dapm_dai_out
] = 10,
121 [snd_soc_dapm_dai_link
] = 11,
122 [snd_soc_dapm_supply
] = 12,
123 [snd_soc_dapm_clock_supply
] = 13,
124 [snd_soc_dapm_regulator_supply
] = 13,
125 [snd_soc_dapm_post
] = 14,
128 static void dapm_assert_locked(struct snd_soc_dapm_context
*dapm
)
130 if (dapm
->card
&& dapm
->card
->instantiated
)
131 lockdep_assert_held(&dapm
->card
->dapm_mutex
);
134 static void pop_wait(u32 pop_time
)
137 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
140 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
148 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
153 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
154 dev_info(dev
, "%s", buf
);
160 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
162 return !list_empty(&w
->dirty
);
165 static void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
167 dapm_assert_locked(w
->dapm
);
169 if (!dapm_dirty_widget(w
)) {
170 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
172 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
177 * Common implementation for dapm_widget_invalidate_input_paths() and
178 * dapm_widget_invalidate_output_paths(). The function is inlined since the
179 * combined size of the two specialized functions is only marginally larger then
180 * the size of the generic function and at the same time the fast path of the
181 * specialized functions is significantly smaller than the generic function.
183 static __always_inline
void dapm_widget_invalidate_paths(
184 struct snd_soc_dapm_widget
*w
, enum snd_soc_dapm_direction dir
)
186 enum snd_soc_dapm_direction rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
187 struct snd_soc_dapm_widget
*node
;
188 struct snd_soc_dapm_path
*p
;
191 dapm_assert_locked(w
->dapm
);
193 if (w
->endpoints
[dir
] == -1)
196 list_add_tail(&w
->work_list
, &list
);
197 w
->endpoints
[dir
] = -1;
199 list_for_each_entry(w
, &list
, work_list
) {
200 snd_soc_dapm_widget_for_each_path(w
, dir
, p
) {
201 if (p
->is_supply
|| p
->weak
|| !p
->connect
)
203 node
= p
->node
[rdir
];
204 if (node
->endpoints
[dir
] != -1) {
205 node
->endpoints
[dir
] = -1;
206 list_add_tail(&node
->work_list
, &list
);
213 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
215 * @w: The widget for which to invalidate the cached number of input paths
217 * Resets the cached number of inputs for the specified widget and all widgets
218 * that can be reached via outcoming paths from the widget.
220 * This function must be called if the number of output paths for a widget might
221 * have changed. E.g. if the source state of a widget changes or a path is added
222 * or activated with the widget as the sink.
224 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget
*w
)
226 dapm_widget_invalidate_paths(w
, SND_SOC_DAPM_DIR_IN
);
230 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
232 * @w: The widget for which to invalidate the cached number of output paths
234 * Resets the cached number of outputs for the specified widget and all widgets
235 * that can be reached via incoming paths from the widget.
237 * This function must be called if the number of output paths for a widget might
238 * have changed. E.g. if the sink state of a widget changes or a path is added
239 * or activated with the widget as the source.
241 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget
*w
)
243 dapm_widget_invalidate_paths(w
, SND_SOC_DAPM_DIR_OUT
);
247 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
248 * for the widgets connected to a path
249 * @p: The path to invalidate
251 * Resets the cached number of inputs for the sink of the path and the cached
252 * number of outputs for the source of the path.
254 * This function must be called when a path is added, removed or the connected
257 static void dapm_path_invalidate(struct snd_soc_dapm_path
*p
)
260 * Weak paths or supply paths do not influence the number of input or
261 * output paths of their neighbors.
263 if (p
->weak
|| p
->is_supply
)
267 * The number of connected endpoints is the sum of the number of
268 * connected endpoints of all neighbors. If a node with 0 connected
269 * endpoints is either connected or disconnected that sum won't change,
270 * so there is no need to re-check the path.
272 if (p
->source
->endpoints
[SND_SOC_DAPM_DIR_IN
] != 0)
273 dapm_widget_invalidate_input_paths(p
->sink
);
274 if (p
->sink
->endpoints
[SND_SOC_DAPM_DIR_OUT
] != 0)
275 dapm_widget_invalidate_output_paths(p
->source
);
278 void dapm_mark_endpoints_dirty(struct snd_soc_card
*card
)
280 struct snd_soc_dapm_widget
*w
;
282 mutex_lock(&card
->dapm_mutex
);
284 list_for_each_entry(w
, &card
->widgets
, list
) {
286 dapm_mark_dirty(w
, "Rechecking endpoints");
287 if (w
->is_ep
& SND_SOC_DAPM_EP_SINK
)
288 dapm_widget_invalidate_output_paths(w
);
289 if (w
->is_ep
& SND_SOC_DAPM_EP_SOURCE
)
290 dapm_widget_invalidate_input_paths(w
);
294 mutex_unlock(&card
->dapm_mutex
);
296 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty
);
298 /* create a new dapm widget */
299 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
300 const struct snd_soc_dapm_widget
*_widget
)
302 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
305 struct dapm_kcontrol_data
{
307 struct snd_soc_dapm_widget
*widget
;
308 struct list_head paths
;
309 struct snd_soc_dapm_widget_list
*wlist
;
312 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget
*widget
,
313 struct snd_kcontrol
*kcontrol
)
315 struct dapm_kcontrol_data
*data
;
316 struct soc_mixer_control
*mc
;
321 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
325 INIT_LIST_HEAD(&data
->paths
);
327 switch (widget
->id
) {
328 case snd_soc_dapm_switch
:
329 case snd_soc_dapm_mixer
:
330 case snd_soc_dapm_mixer_named_ctl
:
331 mc
= (struct soc_mixer_control
*)kcontrol
->private_value
;
333 if (mc
->autodisable
) {
334 struct snd_soc_dapm_widget
template;
336 name
= kasprintf(GFP_KERNEL
, "%s %s", kcontrol
->id
.name
,
343 memset(&template, 0, sizeof(template));
344 template.reg
= mc
->reg
;
345 template.mask
= (1 << fls(mc
->max
)) - 1;
346 template.shift
= mc
->shift
;
348 template.off_val
= mc
->max
;
350 template.off_val
= 0;
351 template.on_val
= template.off_val
;
352 template.id
= snd_soc_dapm_kcontrol
;
353 template.name
= name
;
355 data
->value
= template.on_val
;
358 snd_soc_dapm_new_control_unlocked(widget
->dapm
,
367 case snd_soc_dapm_demux
:
368 case snd_soc_dapm_mux
:
369 e
= (struct soc_enum
*)kcontrol
->private_value
;
371 if (e
->autodisable
) {
372 struct snd_soc_dapm_widget
template;
374 name
= kasprintf(GFP_KERNEL
, "%s %s", kcontrol
->id
.name
,
381 memset(&template, 0, sizeof(template));
382 template.reg
= e
->reg
;
383 template.mask
= e
->mask
<< e
->shift_l
;
384 template.shift
= e
->shift_l
;
385 template.off_val
= snd_soc_enum_item_to_val(e
, 0);
386 template.on_val
= template.off_val
;
387 template.id
= snd_soc_dapm_kcontrol
;
388 template.name
= name
;
390 data
->value
= template.on_val
;
392 data
->widget
= snd_soc_dapm_new_control_unlocked(
393 widget
->dapm
, &template);
400 snd_soc_dapm_add_path(widget
->dapm
, data
->widget
,
408 kcontrol
->private_data
= data
;
417 static void dapm_kcontrol_free(struct snd_kcontrol
*kctl
)
419 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kctl
);
424 static struct snd_soc_dapm_widget_list
*dapm_kcontrol_get_wlist(
425 const struct snd_kcontrol
*kcontrol
)
427 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
432 static int dapm_kcontrol_add_widget(struct snd_kcontrol
*kcontrol
,
433 struct snd_soc_dapm_widget
*widget
)
435 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
436 struct snd_soc_dapm_widget_list
*new_wlist
;
440 n
= data
->wlist
->num_widgets
+ 1;
444 new_wlist
= krealloc(data
->wlist
,
445 sizeof(*new_wlist
) + sizeof(widget
) * n
, GFP_KERNEL
);
449 new_wlist
->widgets
[n
- 1] = widget
;
450 new_wlist
->num_widgets
= n
;
452 data
->wlist
= new_wlist
;
457 static void dapm_kcontrol_add_path(const struct snd_kcontrol
*kcontrol
,
458 struct snd_soc_dapm_path
*path
)
460 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
462 list_add_tail(&path
->list_kcontrol
, &data
->paths
);
465 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol
*kcontrol
)
467 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
472 return data
->widget
->power
;
475 static struct list_head
*dapm_kcontrol_get_path_list(
476 const struct snd_kcontrol
*kcontrol
)
478 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
483 #define dapm_kcontrol_for_each_path(path, kcontrol) \
484 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
487 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol
*kcontrol
)
489 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
493 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value
);
495 static bool dapm_kcontrol_set_value(const struct snd_kcontrol
*kcontrol
,
498 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
500 if (data
->value
== value
)
504 data
->widget
->on_val
= value
;
512 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
514 * @kcontrol: The kcontrol
516 * Note: This function must only be used on kcontrols that are known to have
517 * been registered for a CODEC. Otherwise the behaviour is undefined.
519 struct snd_soc_dapm_context
*snd_soc_dapm_kcontrol_dapm(
520 struct snd_kcontrol
*kcontrol
)
522 return dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0]->dapm
;
524 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm
);
526 static void dapm_reset(struct snd_soc_card
*card
)
528 struct snd_soc_dapm_widget
*w
;
530 lockdep_assert_held(&card
->dapm_mutex
);
532 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
534 list_for_each_entry(w
, &card
->widgets
, list
) {
535 w
->new_power
= w
->power
;
536 w
->power_checked
= false;
540 static const char *soc_dapm_prefix(struct snd_soc_dapm_context
*dapm
)
542 if (!dapm
->component
)
544 return dapm
->component
->name_prefix
;
547 static int soc_dapm_read(struct snd_soc_dapm_context
*dapm
, int reg
,
550 if (!dapm
->component
)
552 return snd_soc_component_read(dapm
->component
, reg
, value
);
555 static int soc_dapm_update_bits(struct snd_soc_dapm_context
*dapm
,
556 int reg
, unsigned int mask
, unsigned int value
)
558 if (!dapm
->component
)
560 return snd_soc_component_update_bits(dapm
->component
, reg
,
564 static int soc_dapm_test_bits(struct snd_soc_dapm_context
*dapm
,
565 int reg
, unsigned int mask
, unsigned int value
)
567 if (!dapm
->component
)
569 return snd_soc_component_test_bits(dapm
->component
, reg
, mask
, value
);
572 static void soc_dapm_async_complete(struct snd_soc_dapm_context
*dapm
)
575 snd_soc_component_async_complete(dapm
->component
);
578 static struct snd_soc_dapm_widget
*
579 dapm_wcache_lookup(struct snd_soc_dapm_wcache
*wcache
, const char *name
)
581 struct snd_soc_dapm_widget
*w
= wcache
->widget
;
582 struct list_head
*wlist
;
587 wlist
= &w
->dapm
->card
->widgets
;
589 list_for_each_entry_from(w
, wlist
, list
) {
590 if (!strcmp(name
, w
->name
))
601 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache
*wcache
,
602 struct snd_soc_dapm_widget
*w
)
608 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
609 * @dapm: The DAPM context for which to set the level
610 * @level: The level to set
612 * Forces the DAPM bias level to a specific state. It will call the bias level
613 * callback of DAPM context with the specified level. This will even happen if
614 * the context is already at the same level. Furthermore it will not go through
615 * the normal bias level sequencing, meaning any intermediate states between the
616 * current and the target state will not be entered.
618 * Note that the change in bias level is only temporary and the next time
619 * snd_soc_dapm_sync() is called the state will be set to the level as
620 * determined by the DAPM core. The function is mainly intended to be used to
621 * used during probe or resume from suspend to power up the device so
622 * initialization can be done, before the DAPM core takes over.
624 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context
*dapm
,
625 enum snd_soc_bias_level level
)
629 if (dapm
->set_bias_level
)
630 ret
= dapm
->set_bias_level(dapm
, level
);
633 dapm
->bias_level
= level
;
637 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level
);
640 * snd_soc_dapm_set_bias_level - set the bias level for the system
641 * @dapm: DAPM context
642 * @level: level to configure
644 * Configure the bias (power) levels for the SoC audio device.
646 * Returns 0 for success else error.
648 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
649 enum snd_soc_bias_level level
)
651 struct snd_soc_card
*card
= dapm
->card
;
654 trace_snd_soc_bias_level_start(card
, level
);
656 if (card
&& card
->set_bias_level
)
657 ret
= card
->set_bias_level(card
, dapm
, level
);
661 if (!card
|| dapm
!= &card
->dapm
)
662 ret
= snd_soc_dapm_force_bias_level(dapm
, level
);
667 if (card
&& card
->set_bias_level_post
)
668 ret
= card
->set_bias_level_post(card
, dapm
, level
);
670 trace_snd_soc_bias_level_done(card
, level
);
675 /* connect mux widget to its interconnecting audio paths */
676 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
677 struct snd_soc_dapm_path
*path
, const char *control_name
,
678 struct snd_soc_dapm_widget
*w
)
680 const struct snd_kcontrol_new
*kcontrol
= &w
->kcontrol_news
[0];
681 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
682 unsigned int val
, item
;
685 if (e
->reg
!= SND_SOC_NOPM
) {
686 soc_dapm_read(dapm
, e
->reg
, &val
);
687 val
= (val
>> e
->shift_l
) & e
->mask
;
688 item
= snd_soc_enum_val_to_item(e
, val
);
690 /* since a virtual mux has no backing registers to
691 * decide which path to connect, it will try to match
692 * with the first enumeration. This is to ensure
693 * that the default mux choice (the first) will be
694 * correctly powered up during initialization.
699 for (i
= 0; i
< e
->items
; i
++) {
700 if (!(strcmp(control_name
, e
->texts
[i
]))) {
701 path
->name
= e
->texts
[i
];
713 /* set up initial codec paths */
714 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path
*p
, int i
)
716 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
717 p
->sink
->kcontrol_news
[i
].private_value
;
718 unsigned int reg
= mc
->reg
;
719 unsigned int shift
= mc
->shift
;
720 unsigned int max
= mc
->max
;
721 unsigned int mask
= (1 << fls(max
)) - 1;
722 unsigned int invert
= mc
->invert
;
725 if (reg
!= SND_SOC_NOPM
) {
726 soc_dapm_read(p
->sink
->dapm
, reg
, &val
);
727 val
= (val
>> shift
) & mask
;
736 /* connect mixer widget to its interconnecting audio paths */
737 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
738 struct snd_soc_dapm_path
*path
, const char *control_name
)
742 /* search for mixer kcontrol */
743 for (i
= 0; i
< path
->sink
->num_kcontrols
; i
++) {
744 if (!strcmp(control_name
, path
->sink
->kcontrol_news
[i
].name
)) {
745 path
->name
= path
->sink
->kcontrol_news
[i
].name
;
746 dapm_set_mixer_path_status(path
, i
);
753 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
754 struct snd_soc_dapm_widget
*kcontrolw
,
755 const struct snd_kcontrol_new
*kcontrol_new
,
756 struct snd_kcontrol
**kcontrol
)
758 struct snd_soc_dapm_widget
*w
;
763 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
764 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
766 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
767 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
769 *kcontrol
= w
->kcontrols
[i
];
779 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
780 * create it. Either way, add the widget into the control's widget list
782 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget
*w
,
785 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
786 struct snd_card
*card
= dapm
->card
->snd_card
;
790 struct snd_kcontrol
*kcontrol
;
791 bool wname_in_long_name
, kcname_in_long_name
;
792 char *long_name
= NULL
;
796 prefix
= soc_dapm_prefix(dapm
);
798 prefix_len
= strlen(prefix
) + 1;
802 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[kci
],
807 wname_in_long_name
= false;
808 kcname_in_long_name
= true;
811 case snd_soc_dapm_switch
:
812 case snd_soc_dapm_mixer
:
813 wname_in_long_name
= true;
814 kcname_in_long_name
= true;
816 case snd_soc_dapm_mixer_named_ctl
:
817 wname_in_long_name
= false;
818 kcname_in_long_name
= true;
820 case snd_soc_dapm_demux
:
821 case snd_soc_dapm_mux
:
822 wname_in_long_name
= true;
823 kcname_in_long_name
= false;
830 if (wname_in_long_name
&& kcname_in_long_name
) {
832 * The control will get a prefix from the control
833 * creation process but we're also using the same
834 * prefix for widgets so cut the prefix off the
835 * front of the widget name.
837 long_name
= kasprintf(GFP_KERNEL
, "%s %s",
838 w
->name
+ prefix_len
,
839 w
->kcontrol_news
[kci
].name
);
840 if (long_name
== NULL
)
844 } else if (wname_in_long_name
) {
846 name
= w
->name
+ prefix_len
;
849 name
= w
->kcontrol_news
[kci
].name
;
852 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[kci
], NULL
, name
,
859 kcontrol
->private_free
= dapm_kcontrol_free
;
861 ret
= dapm_kcontrol_data_alloc(w
, kcontrol
);
863 snd_ctl_free_one(kcontrol
);
867 ret
= snd_ctl_add(card
, kcontrol
);
870 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
876 ret
= dapm_kcontrol_add_widget(kcontrol
, w
);
878 w
->kcontrols
[kci
] = kcontrol
;
886 /* create new dapm mixer control */
887 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
890 struct snd_soc_dapm_path
*path
;
891 struct dapm_kcontrol_data
*data
;
894 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
896 snd_soc_dapm_widget_for_each_source_path(w
, path
) {
897 /* mixer/mux paths name must match control name */
898 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
901 if (!w
->kcontrols
[i
]) {
902 ret
= dapm_create_or_share_mixmux_kcontrol(w
, i
);
907 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
909 data
= snd_kcontrol_chip(w
->kcontrols
[i
]);
911 snd_soc_dapm_add_path(data
->widget
->dapm
,
921 /* create new dapm mux control */
922 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
924 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
925 enum snd_soc_dapm_direction dir
;
926 struct snd_soc_dapm_path
*path
;
931 case snd_soc_dapm_mux
:
932 dir
= SND_SOC_DAPM_DIR_OUT
;
935 case snd_soc_dapm_demux
:
936 dir
= SND_SOC_DAPM_DIR_IN
;
943 if (w
->num_kcontrols
!= 1) {
945 "ASoC: %s %s has incorrect number of controls\n", type
,
950 if (list_empty(&w
->edges
[dir
])) {
951 dev_err(dapm
->dev
, "ASoC: %s %s has no paths\n", type
, w
->name
);
955 ret
= dapm_create_or_share_mixmux_kcontrol(w
, 0);
959 snd_soc_dapm_widget_for_each_path(w
, dir
, path
) {
961 dapm_kcontrol_add_path(w
->kcontrols
[0], path
);
967 /* create new dapm volume control */
968 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
970 if (w
->num_kcontrols
)
971 dev_err(w
->dapm
->dev
,
972 "ASoC: PGA controls not supported: '%s'\n", w
->name
);
977 /* create new dapm dai link control */
978 static int dapm_new_dai_link(struct snd_soc_dapm_widget
*w
)
981 struct snd_kcontrol
*kcontrol
;
982 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
983 struct snd_card
*card
= dapm
->card
->snd_card
;
985 /* create control for links with > 1 config */
986 if (w
->num_params
<= 1)
990 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
991 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
], w
,
993 ret
= snd_ctl_add(card
, kcontrol
);
996 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
997 w
->name
, w
->kcontrol_news
[i
].name
, ret
);
1000 kcontrol
->private_data
= w
;
1001 w
->kcontrols
[i
] = kcontrol
;
1007 /* We implement power down on suspend by checking the power state of
1008 * the ALSA card - when we are suspending the ALSA state for the card
1011 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
1013 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
1016 case SNDRV_CTL_POWER_D3hot
:
1017 case SNDRV_CTL_POWER_D3cold
:
1018 if (widget
->ignore_suspend
)
1019 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
1021 return widget
->ignore_suspend
;
1027 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list
**list
,
1028 struct list_head
*widgets
)
1030 struct snd_soc_dapm_widget
*w
;
1031 struct list_head
*it
;
1032 unsigned int size
= 0;
1035 list_for_each(it
, widgets
)
1038 *list
= kzalloc(sizeof(**list
) + size
* sizeof(*w
), GFP_KERNEL
);
1042 list_for_each_entry(w
, widgets
, work_list
)
1043 (*list
)->widgets
[i
++] = w
;
1045 (*list
)->num_widgets
= i
;
1051 * Common implementation for is_connected_output_ep() and
1052 * is_connected_input_ep(). The function is inlined since the combined size of
1053 * the two specialized functions is only marginally larger then the size of the
1054 * generic function and at the same time the fast path of the specialized
1055 * functions is significantly smaller than the generic function.
1057 static __always_inline
int is_connected_ep(struct snd_soc_dapm_widget
*widget
,
1058 struct list_head
*list
, enum snd_soc_dapm_direction dir
,
1059 int (*fn
)(struct snd_soc_dapm_widget
*, struct list_head
*))
1061 enum snd_soc_dapm_direction rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
1062 struct snd_soc_dapm_path
*path
;
1065 if (widget
->endpoints
[dir
] >= 0)
1066 return widget
->endpoints
[dir
];
1068 DAPM_UPDATE_STAT(widget
, path_checks
);
1070 /* do we need to add this widget to the list ? */
1072 list_add_tail(&widget
->work_list
, list
);
1074 if ((widget
->is_ep
& SND_SOC_DAPM_DIR_TO_EP(dir
)) && widget
->connected
) {
1075 widget
->endpoints
[dir
] = snd_soc_dapm_suspend_check(widget
);
1076 return widget
->endpoints
[dir
];
1079 snd_soc_dapm_widget_for_each_path(widget
, rdir
, path
) {
1080 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
1082 if (path
->weak
|| path
->is_supply
)
1088 trace_snd_soc_dapm_path(widget
, dir
, path
);
1090 if (path
->connect
) {
1092 con
+= fn(path
->node
[dir
], list
);
1097 widget
->endpoints
[dir
] = con
;
1103 * Recursively check for a completed path to an active or physically connected
1104 * output widget. Returns number of complete paths.
1106 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
1107 struct list_head
*list
)
1109 return is_connected_ep(widget
, list
, SND_SOC_DAPM_DIR_OUT
,
1110 is_connected_output_ep
);
1114 * Recursively check for a completed path to an active or physically connected
1115 * input widget. Returns number of complete paths.
1117 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
1118 struct list_head
*list
)
1120 return is_connected_ep(widget
, list
, SND_SOC_DAPM_DIR_IN
,
1121 is_connected_input_ep
);
1125 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1126 * @dai: the soc DAI.
1127 * @stream: stream direction.
1128 * @list: list of active widgets for this stream.
1130 * Queries DAPM graph as to whether an valid audio stream path exists for
1131 * the initial stream specified by name. This takes into account
1132 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1134 * Returns the number of valid paths or negative error.
1136 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
1137 struct snd_soc_dapm_widget_list
**list
)
1139 struct snd_soc_card
*card
= dai
->component
->card
;
1140 struct snd_soc_dapm_widget
*w
;
1145 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1148 * For is_connected_{output,input}_ep fully discover the graph we need
1149 * to reset the cached number of inputs and outputs.
1151 list_for_each_entry(w
, &card
->widgets
, list
) {
1152 w
->endpoints
[SND_SOC_DAPM_DIR_IN
] = -1;
1153 w
->endpoints
[SND_SOC_DAPM_DIR_OUT
] = -1;
1156 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1157 paths
= is_connected_output_ep(dai
->playback_widget
, &widgets
);
1159 paths
= is_connected_input_ep(dai
->capture_widget
, &widgets
);
1161 /* Drop starting point */
1162 list_del(widgets
.next
);
1164 ret
= dapm_widget_list_create(list
, &widgets
);
1168 trace_snd_soc_dapm_connected(paths
, stream
);
1169 mutex_unlock(&card
->dapm_mutex
);
1175 * Handler for regulator supply widget.
1177 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1178 struct snd_kcontrol
*kcontrol
, int event
)
1182 soc_dapm_async_complete(w
->dapm
);
1184 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1185 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1186 ret
= regulator_allow_bypass(w
->regulator
, false);
1188 dev_warn(w
->dapm
->dev
,
1189 "ASoC: Failed to unbypass %s: %d\n",
1193 return regulator_enable(w
->regulator
);
1195 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1196 ret
= regulator_allow_bypass(w
->regulator
, true);
1198 dev_warn(w
->dapm
->dev
,
1199 "ASoC: Failed to bypass %s: %d\n",
1203 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1206 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1209 * Handler for clock supply widget.
1211 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1212 struct snd_kcontrol
*kcontrol
, int event
)
1217 soc_dapm_async_complete(w
->dapm
);
1219 #ifdef CONFIG_HAVE_CLK
1220 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1221 return clk_prepare_enable(w
->clk
);
1223 clk_disable_unprepare(w
->clk
);
1229 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1231 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1233 if (w
->power_checked
)
1234 return w
->new_power
;
1239 w
->new_power
= w
->power_check(w
);
1241 w
->power_checked
= true;
1243 return w
->new_power
;
1246 /* Generic check to see if a widget should be powered.
1248 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1252 DAPM_UPDATE_STAT(w
, power_checks
);
1254 in
= is_connected_input_ep(w
, NULL
);
1255 out
= is_connected_output_ep(w
, NULL
);
1256 return out
!= 0 && in
!= 0;
1259 /* Check to see if a power supply is needed */
1260 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1262 struct snd_soc_dapm_path
*path
;
1264 DAPM_UPDATE_STAT(w
, power_checks
);
1266 /* Check if one of our outputs is connected */
1267 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
1268 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1273 if (path
->connected
&&
1274 !path
->connected(path
->source
, path
->sink
))
1277 if (dapm_widget_power_check(path
->sink
))
1284 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1289 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1290 struct snd_soc_dapm_widget
*b
,
1298 sort
= dapm_down_seq
;
1300 if (sort
[a
->id
] != sort
[b
->id
])
1301 return sort
[a
->id
] - sort
[b
->id
];
1302 if (a
->subseq
!= b
->subseq
) {
1304 return a
->subseq
- b
->subseq
;
1306 return b
->subseq
- a
->subseq
;
1308 if (a
->reg
!= b
->reg
)
1309 return a
->reg
- b
->reg
;
1310 if (a
->dapm
!= b
->dapm
)
1311 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1316 /* Insert a widget in order into a DAPM power sequence. */
1317 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1318 struct list_head
*list
,
1321 struct snd_soc_dapm_widget
*w
;
1323 list_for_each_entry(w
, list
, power_list
)
1324 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1325 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1329 list_add_tail(&new_widget
->power_list
, list
);
1332 static void dapm_seq_check_event(struct snd_soc_card
*card
,
1333 struct snd_soc_dapm_widget
*w
, int event
)
1335 const char *ev_name
;
1339 case SND_SOC_DAPM_PRE_PMU
:
1340 ev_name
= "PRE_PMU";
1343 case SND_SOC_DAPM_POST_PMU
:
1344 ev_name
= "POST_PMU";
1347 case SND_SOC_DAPM_PRE_PMD
:
1348 ev_name
= "PRE_PMD";
1351 case SND_SOC_DAPM_POST_PMD
:
1352 ev_name
= "POST_PMD";
1355 case SND_SOC_DAPM_WILL_PMU
:
1356 ev_name
= "WILL_PMU";
1359 case SND_SOC_DAPM_WILL_PMD
:
1360 ev_name
= "WILL_PMD";
1364 WARN(1, "Unknown event %d\n", event
);
1368 if (w
->new_power
!= power
)
1371 if (w
->event
&& (w
->event_flags
& event
)) {
1372 pop_dbg(w
->dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1374 soc_dapm_async_complete(w
->dapm
);
1375 trace_snd_soc_dapm_widget_event_start(w
, event
);
1376 ret
= w
->event(w
, NULL
, event
);
1377 trace_snd_soc_dapm_widget_event_done(w
, event
);
1379 dev_err(w
->dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1380 ev_name
, w
->name
, ret
);
1384 /* Apply the coalesced changes from a DAPM sequence */
1385 static void dapm_seq_run_coalesced(struct snd_soc_card
*card
,
1386 struct list_head
*pending
)
1388 struct snd_soc_dapm_context
*dapm
;
1389 struct snd_soc_dapm_widget
*w
;
1391 unsigned int value
= 0;
1392 unsigned int mask
= 0;
1394 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
, power_list
);
1398 list_for_each_entry(w
, pending
, power_list
) {
1399 WARN_ON(reg
!= w
->reg
|| dapm
!= w
->dapm
);
1400 w
->power
= w
->new_power
;
1402 mask
|= w
->mask
<< w
->shift
;
1404 value
|= w
->on_val
<< w
->shift
;
1406 value
|= w
->off_val
<< w
->shift
;
1408 pop_dbg(dapm
->dev
, card
->pop_time
,
1409 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1410 w
->name
, reg
, value
, mask
);
1412 /* Check for events */
1413 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMU
);
1414 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMD
);
1418 /* Any widget will do, they should all be updating the
1422 pop_dbg(dapm
->dev
, card
->pop_time
,
1423 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1424 value
, mask
, reg
, card
->pop_time
);
1425 pop_wait(card
->pop_time
);
1426 soc_dapm_update_bits(dapm
, reg
, mask
, value
);
1429 list_for_each_entry(w
, pending
, power_list
) {
1430 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMU
);
1431 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMD
);
1435 /* Apply a DAPM power sequence.
1437 * We walk over a pre-sorted list of widgets to apply power to. In
1438 * order to minimise the number of writes to the device required
1439 * multiple widgets will be updated in a single write where possible.
1440 * Currently anything that requires more than a single write is not
1443 static void dapm_seq_run(struct snd_soc_card
*card
,
1444 struct list_head
*list
, int event
, bool power_up
)
1446 struct snd_soc_dapm_widget
*w
, *n
;
1447 struct snd_soc_dapm_context
*d
;
1450 int cur_subseq
= -1;
1451 int cur_reg
= SND_SOC_NOPM
;
1452 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1459 sort
= dapm_down_seq
;
1461 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1464 /* Do we need to apply any queued changes? */
1465 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1466 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1467 if (!list_empty(&pending
))
1468 dapm_seq_run_coalesced(card
, &pending
);
1470 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1471 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1472 if (sort
[i
] == cur_sort
)
1473 cur_dapm
->seq_notifier(cur_dapm
,
1478 if (cur_dapm
&& w
->dapm
!= cur_dapm
)
1479 soc_dapm_async_complete(cur_dapm
);
1481 INIT_LIST_HEAD(&pending
);
1483 cur_subseq
= INT_MIN
;
1484 cur_reg
= SND_SOC_NOPM
;
1489 case snd_soc_dapm_pre
:
1491 list_for_each_entry_safe_continue(w
, n
, list
,
1494 if (event
== SND_SOC_DAPM_STREAM_START
)
1496 NULL
, SND_SOC_DAPM_PRE_PMU
);
1497 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1499 NULL
, SND_SOC_DAPM_PRE_PMD
);
1502 case snd_soc_dapm_post
:
1504 list_for_each_entry_safe_continue(w
, n
, list
,
1507 if (event
== SND_SOC_DAPM_STREAM_START
)
1509 NULL
, SND_SOC_DAPM_POST_PMU
);
1510 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1512 NULL
, SND_SOC_DAPM_POST_PMD
);
1516 /* Queue it up for application */
1517 cur_sort
= sort
[w
->id
];
1518 cur_subseq
= w
->subseq
;
1521 list_move(&w
->power_list
, &pending
);
1526 dev_err(w
->dapm
->dev
,
1527 "ASoC: Failed to apply widget power: %d\n", ret
);
1530 if (!list_empty(&pending
))
1531 dapm_seq_run_coalesced(card
, &pending
);
1533 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1534 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1535 if (sort
[i
] == cur_sort
)
1536 cur_dapm
->seq_notifier(cur_dapm
,
1540 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1541 soc_dapm_async_complete(d
);
1545 static void dapm_widget_update(struct snd_soc_card
*card
)
1547 struct snd_soc_dapm_update
*update
= card
->update
;
1548 struct snd_soc_dapm_widget_list
*wlist
;
1549 struct snd_soc_dapm_widget
*w
= NULL
;
1553 if (!update
|| !dapm_kcontrol_is_powered(update
->kcontrol
))
1556 wlist
= dapm_kcontrol_get_wlist(update
->kcontrol
);
1558 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1559 w
= wlist
->widgets
[wi
];
1561 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1562 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1564 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1572 ret
= soc_dapm_update_bits(w
->dapm
, update
->reg
, update
->mask
,
1575 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1578 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1579 w
= wlist
->widgets
[wi
];
1581 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1582 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1584 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1590 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1591 * they're changing state.
1593 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1595 struct snd_soc_dapm_context
*d
= data
;
1598 /* If we're off and we're not supposed to be go into STANDBY */
1599 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1600 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1602 pm_runtime_get_sync(d
->dev
);
1604 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1607 "ASoC: Failed to turn on bias: %d\n", ret
);
1610 /* Prepare for a transition to ON or away from ON */
1611 if ((d
->target_bias_level
== SND_SOC_BIAS_ON
&&
1612 d
->bias_level
!= SND_SOC_BIAS_ON
) ||
1613 (d
->target_bias_level
!= SND_SOC_BIAS_ON
&&
1614 d
->bias_level
== SND_SOC_BIAS_ON
)) {
1615 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1618 "ASoC: Failed to prepare bias: %d\n", ret
);
1622 /* Async callback run prior to DAPM sequences - brings to their final
1625 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1627 struct snd_soc_dapm_context
*d
= data
;
1630 /* If we just powered the last thing off drop to standby bias */
1631 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1632 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1633 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1634 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1636 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1640 /* If we're in standby and can support bias off then do that */
1641 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1642 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1643 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1645 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1649 pm_runtime_put(d
->dev
);
1652 /* If we just powered up then move to active bias */
1653 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1654 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1655 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1657 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1662 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1663 bool power
, bool connect
)
1665 /* If a connection is being made or broken then that update
1666 * will have marked the peer dirty, otherwise the widgets are
1667 * not connected and this update has no impact. */
1671 /* If the peer is already in the state we're moving to then we
1672 * won't have an impact on it. */
1673 if (power
!= peer
->power
)
1674 dapm_mark_dirty(peer
, "peer state change");
1677 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1678 struct list_head
*up_list
,
1679 struct list_head
*down_list
)
1681 struct snd_soc_dapm_path
*path
;
1683 if (w
->power
== power
)
1686 trace_snd_soc_dapm_widget_power(w
, power
);
1688 /* If we changed our power state perhaps our neigbours changed
1691 snd_soc_dapm_widget_for_each_source_path(w
, path
)
1692 dapm_widget_set_peer_power(path
->source
, power
, path
->connect
);
1694 /* Supplies can't affect their outputs, only their inputs */
1695 if (!w
->is_supply
) {
1696 snd_soc_dapm_widget_for_each_sink_path(w
, path
)
1697 dapm_widget_set_peer_power(path
->sink
, power
,
1702 dapm_seq_insert(w
, up_list
, true);
1704 dapm_seq_insert(w
, down_list
, false);
1707 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1708 struct list_head
*up_list
,
1709 struct list_head
*down_list
)
1714 case snd_soc_dapm_pre
:
1715 dapm_seq_insert(w
, down_list
, false);
1717 case snd_soc_dapm_post
:
1718 dapm_seq_insert(w
, up_list
, true);
1722 power
= dapm_widget_power_check(w
);
1724 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1729 static bool dapm_idle_bias_off(struct snd_soc_dapm_context
*dapm
)
1731 if (dapm
->idle_bias_off
)
1734 switch (snd_power_get_state(dapm
->card
->snd_card
)) {
1735 case SNDRV_CTL_POWER_D3hot
:
1736 case SNDRV_CTL_POWER_D3cold
:
1737 return dapm
->suspend_bias_off
;
1746 * Scan each dapm widget for complete audio path.
1747 * A complete path is a route that has valid endpoints i.e.:-
1749 * o DAC to output pin.
1750 * o Input Pin to ADC.
1751 * o Input pin to Output pin (bypass, sidetone)
1752 * o DAC to ADC (loopback).
1754 static int dapm_power_widgets(struct snd_soc_card
*card
, int event
)
1756 struct snd_soc_dapm_widget
*w
;
1757 struct snd_soc_dapm_context
*d
;
1759 LIST_HEAD(down_list
);
1760 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1761 enum snd_soc_bias_level bias
;
1763 lockdep_assert_held(&card
->dapm_mutex
);
1765 trace_snd_soc_dapm_start(card
);
1767 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1768 if (dapm_idle_bias_off(d
))
1769 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1771 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1776 /* Check which widgets we need to power and store them in
1777 * lists indicating if they should be powered up or down. We
1778 * only check widgets that have been flagged as dirty but note
1779 * that new widgets may be added to the dirty list while we
1782 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1783 dapm_power_one_widget(w
, &up_list
, &down_list
);
1786 list_for_each_entry(w
, &card
->widgets
, list
) {
1788 case snd_soc_dapm_pre
:
1789 case snd_soc_dapm_post
:
1790 /* These widgets always need to be powered */
1793 list_del_init(&w
->dirty
);
1800 /* Supplies and micbiases only bring the
1801 * context up to STANDBY as unless something
1802 * else is active and passing audio they
1803 * generally don't require full power. Signal
1804 * generators are virtual pins and have no
1805 * power impact themselves.
1808 case snd_soc_dapm_siggen
:
1809 case snd_soc_dapm_vmid
:
1811 case snd_soc_dapm_supply
:
1812 case snd_soc_dapm_regulator_supply
:
1813 case snd_soc_dapm_clock_supply
:
1814 case snd_soc_dapm_micbias
:
1815 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1816 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1819 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1826 /* Force all contexts in the card to the same bias state if
1827 * they're not ground referenced.
1829 bias
= SND_SOC_BIAS_OFF
;
1830 list_for_each_entry(d
, &card
->dapm_list
, list
)
1831 if (d
->target_bias_level
> bias
)
1832 bias
= d
->target_bias_level
;
1833 list_for_each_entry(d
, &card
->dapm_list
, list
)
1834 if (!dapm_idle_bias_off(d
))
1835 d
->target_bias_level
= bias
;
1837 trace_snd_soc_dapm_walk_done(card
);
1839 /* Run card bias changes at first */
1840 dapm_pre_sequence_async(&card
->dapm
, 0);
1841 /* Run other bias changes in parallel */
1842 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1843 if (d
!= &card
->dapm
)
1844 async_schedule_domain(dapm_pre_sequence_async
, d
,
1847 async_synchronize_full_domain(&async_domain
);
1849 list_for_each_entry(w
, &down_list
, power_list
) {
1850 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMD
);
1853 list_for_each_entry(w
, &up_list
, power_list
) {
1854 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMU
);
1857 /* Power down widgets first; try to avoid amplifying pops. */
1858 dapm_seq_run(card
, &down_list
, event
, false);
1860 dapm_widget_update(card
);
1863 dapm_seq_run(card
, &up_list
, event
, true);
1865 /* Run all the bias changes in parallel */
1866 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1867 if (d
!= &card
->dapm
)
1868 async_schedule_domain(dapm_post_sequence_async
, d
,
1871 async_synchronize_full_domain(&async_domain
);
1872 /* Run card bias changes at last */
1873 dapm_post_sequence_async(&card
->dapm
, 0);
1875 /* do we need to notify any clients that DAPM event is complete */
1876 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1877 if (d
->stream_event
)
1878 d
->stream_event(d
, event
);
1881 pop_dbg(card
->dev
, card
->pop_time
,
1882 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1883 pop_wait(card
->pop_time
);
1885 trace_snd_soc_dapm_done(card
);
1890 #ifdef CONFIG_DEBUG_FS
1891 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1892 char __user
*user_buf
,
1893 size_t count
, loff_t
*ppos
)
1895 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1896 struct snd_soc_card
*card
= w
->dapm
->card
;
1897 enum snd_soc_dapm_direction dir
, rdir
;
1901 struct snd_soc_dapm_path
*p
= NULL
;
1903 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1907 mutex_lock(&card
->dapm_mutex
);
1909 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
1914 in
= is_connected_input_ep(w
, NULL
);
1915 out
= is_connected_output_ep(w
, NULL
);
1918 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1919 w
->name
, w
->power
? "On" : "Off",
1920 w
->force
? " (forced)" : "", in
, out
);
1923 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1924 " - R%d(0x%x) mask 0x%x",
1925 w
->reg
, w
->reg
, w
->mask
<< w
->shift
);
1927 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1930 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1932 w
->active
? "active" : "inactive");
1934 snd_soc_dapm_for_each_direction(dir
) {
1935 rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
1936 snd_soc_dapm_widget_for_each_path(w
, dir
, p
) {
1937 if (p
->connected
&& !p
->connected(w
, p
->node
[rdir
]))
1943 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1944 " %s \"%s\" \"%s\"\n",
1945 (rdir
== SND_SOC_DAPM_DIR_IN
) ? "in" : "out",
1946 p
->name
? p
->name
: "static",
1947 p
->node
[rdir
]->name
);
1951 mutex_unlock(&card
->dapm_mutex
);
1953 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1959 static const struct file_operations dapm_widget_power_fops
= {
1960 .open
= simple_open
,
1961 .read
= dapm_widget_power_read_file
,
1962 .llseek
= default_llseek
,
1965 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1966 size_t count
, loff_t
*ppos
)
1968 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1971 switch (dapm
->bias_level
) {
1972 case SND_SOC_BIAS_ON
:
1975 case SND_SOC_BIAS_PREPARE
:
1976 level
= "Prepare\n";
1978 case SND_SOC_BIAS_STANDBY
:
1979 level
= "Standby\n";
1981 case SND_SOC_BIAS_OFF
:
1985 WARN(1, "Unknown bias_level %d\n", dapm
->bias_level
);
1986 level
= "Unknown\n";
1990 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1994 static const struct file_operations dapm_bias_fops
= {
1995 .open
= simple_open
,
1996 .read
= dapm_bias_read_file
,
1997 .llseek
= default_llseek
,
2000 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2001 struct dentry
*parent
)
2008 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
2010 if (!dapm
->debugfs_dapm
) {
2012 "ASoC: Failed to create DAPM debugfs directory\n");
2016 d
= debugfs_create_file("bias_level", 0444,
2017 dapm
->debugfs_dapm
, dapm
,
2021 "ASoC: Failed to create bias level debugfs file\n");
2024 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2026 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
2029 if (!dapm
->debugfs_dapm
|| !w
->name
)
2032 d
= debugfs_create_file(w
->name
, 0444,
2033 dapm
->debugfs_dapm
, w
,
2034 &dapm_widget_power_fops
);
2036 dev_warn(w
->dapm
->dev
,
2037 "ASoC: Failed to create %s debugfs file\n",
2041 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2043 debugfs_remove_recursive(dapm
->debugfs_dapm
);
2047 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2048 struct dentry
*parent
)
2052 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2056 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2063 * soc_dapm_connect_path() - Connects or disconnects a path
2064 * @path: The path to update
2065 * @connect: The new connect state of the path. True if the path is connected,
2066 * false if it is disconneted.
2067 * @reason: The reason why the path changed (for debugging only)
2069 static void soc_dapm_connect_path(struct snd_soc_dapm_path
*path
,
2070 bool connect
, const char *reason
)
2072 if (path
->connect
== connect
)
2075 path
->connect
= connect
;
2076 dapm_mark_dirty(path
->source
, reason
);
2077 dapm_mark_dirty(path
->sink
, reason
);
2078 dapm_path_invalidate(path
);
2081 /* test and update the power status of a mux widget */
2082 static int soc_dapm_mux_update_power(struct snd_soc_card
*card
,
2083 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
2085 struct snd_soc_dapm_path
*path
;
2089 lockdep_assert_held(&card
->dapm_mutex
);
2091 /* find dapm widget path assoc with kcontrol */
2092 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2094 /* we now need to match the string in the enum to the path */
2095 if (!(strcmp(path
->name
, e
->texts
[mux
])))
2100 soc_dapm_connect_path(path
, connect
, "mux update");
2104 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2109 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context
*dapm
,
2110 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
,
2111 struct snd_soc_dapm_update
*update
)
2113 struct snd_soc_card
*card
= dapm
->card
;
2116 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2117 card
->update
= update
;
2118 ret
= soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
2119 card
->update
= NULL
;
2120 mutex_unlock(&card
->dapm_mutex
);
2122 soc_dpcm_runtime_update(card
);
2125 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
2127 /* test and update the power status of a mixer or switch widget */
2128 static int soc_dapm_mixer_update_power(struct snd_soc_card
*card
,
2129 struct snd_kcontrol
*kcontrol
, int connect
)
2131 struct snd_soc_dapm_path
*path
;
2134 lockdep_assert_held(&card
->dapm_mutex
);
2136 /* find dapm widget path assoc with kcontrol */
2137 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2139 soc_dapm_connect_path(path
, connect
, "mixer update");
2143 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2148 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context
*dapm
,
2149 struct snd_kcontrol
*kcontrol
, int connect
,
2150 struct snd_soc_dapm_update
*update
)
2152 struct snd_soc_card
*card
= dapm
->card
;
2155 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2156 card
->update
= update
;
2157 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
2158 card
->update
= NULL
;
2159 mutex_unlock(&card
->dapm_mutex
);
2161 soc_dpcm_runtime_update(card
);
2164 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
2166 static ssize_t
dapm_widget_show_component(struct snd_soc_component
*cmpnt
,
2169 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(cmpnt
);
2170 struct snd_soc_dapm_widget
*w
;
2172 char *state
= "not set";
2174 list_for_each_entry(w
, &cmpnt
->card
->widgets
, list
) {
2175 if (w
->dapm
!= dapm
)
2178 /* only display widgets that burnm power */
2180 case snd_soc_dapm_hp
:
2181 case snd_soc_dapm_mic
:
2182 case snd_soc_dapm_spk
:
2183 case snd_soc_dapm_line
:
2184 case snd_soc_dapm_micbias
:
2185 case snd_soc_dapm_dac
:
2186 case snd_soc_dapm_adc
:
2187 case snd_soc_dapm_pga
:
2188 case snd_soc_dapm_out_drv
:
2189 case snd_soc_dapm_mixer
:
2190 case snd_soc_dapm_mixer_named_ctl
:
2191 case snd_soc_dapm_supply
:
2192 case snd_soc_dapm_regulator_supply
:
2193 case snd_soc_dapm_clock_supply
:
2195 count
+= sprintf(buf
+ count
, "%s: %s\n",
2196 w
->name
, w
->power
? "On":"Off");
2203 switch (snd_soc_dapm_get_bias_level(dapm
)) {
2204 case SND_SOC_BIAS_ON
:
2207 case SND_SOC_BIAS_PREPARE
:
2210 case SND_SOC_BIAS_STANDBY
:
2213 case SND_SOC_BIAS_OFF
:
2217 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2222 /* show dapm widget status in sys fs */
2223 static ssize_t
dapm_widget_show(struct device
*dev
,
2224 struct device_attribute
*attr
, char *buf
)
2226 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2229 mutex_lock(&rtd
->card
->dapm_mutex
);
2231 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2232 struct snd_soc_component
*cmpnt
= rtd
->codec_dais
[i
]->component
;
2234 count
+= dapm_widget_show_component(cmpnt
, buf
+ count
);
2237 mutex_unlock(&rtd
->card
->dapm_mutex
);
2242 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2244 struct attribute
*soc_dapm_dev_attrs
[] = {
2245 &dev_attr_dapm_widget
.attr
,
2249 static void dapm_free_path(struct snd_soc_dapm_path
*path
)
2251 list_del(&path
->list_node
[SND_SOC_DAPM_DIR_IN
]);
2252 list_del(&path
->list_node
[SND_SOC_DAPM_DIR_OUT
]);
2253 list_del(&path
->list_kcontrol
);
2254 list_del(&path
->list
);
2258 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget
*w
)
2260 struct snd_soc_dapm_path
*p
, *next_p
;
2261 enum snd_soc_dapm_direction dir
;
2265 * remove source and sink paths associated to this widget.
2266 * While removing the path, remove reference to it from both
2267 * source and sink widgets so that path is removed only once.
2269 snd_soc_dapm_for_each_direction(dir
) {
2270 snd_soc_dapm_widget_for_each_path_safe(w
, dir
, p
, next_p
)
2274 kfree(w
->kcontrols
);
2275 kfree_const(w
->name
);
2279 /* free all dapm widgets and resources */
2280 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2282 struct snd_soc_dapm_widget
*w
, *next_w
;
2284 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2285 if (w
->dapm
!= dapm
)
2287 snd_soc_dapm_free_widget(w
);
2291 static struct snd_soc_dapm_widget
*dapm_find_widget(
2292 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2293 bool search_other_contexts
)
2295 struct snd_soc_dapm_widget
*w
;
2296 struct snd_soc_dapm_widget
*fallback
= NULL
;
2298 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2299 if (!strcmp(w
->name
, pin
)) {
2300 if (w
->dapm
== dapm
)
2307 if (search_other_contexts
)
2313 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2314 const char *pin
, int status
)
2316 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2318 dapm_assert_locked(dapm
);
2321 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2325 if (w
->connected
!= status
) {
2326 dapm_mark_dirty(w
, "pin configuration");
2327 dapm_widget_invalidate_input_paths(w
);
2328 dapm_widget_invalidate_output_paths(w
);
2331 w
->connected
= status
;
2339 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2340 * @dapm: DAPM context
2342 * Walks all dapm audio paths and powers widgets according to their
2343 * stream or path usage.
2345 * Requires external locking.
2347 * Returns 0 for success.
2349 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context
*dapm
)
2352 * Suppress early reports (eg, jacks syncing their state) to avoid
2353 * silly DAPM runs during card startup.
2355 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2358 return dapm_power_widgets(dapm
->card
, SND_SOC_DAPM_STREAM_NOP
);
2360 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked
);
2363 * snd_soc_dapm_sync - scan and power dapm paths
2364 * @dapm: DAPM context
2366 * Walks all dapm audio paths and powers widgets according to their
2367 * stream or path usage.
2369 * Returns 0 for success.
2371 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2375 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2376 ret
= snd_soc_dapm_sync_unlocked(dapm
);
2377 mutex_unlock(&dapm
->card
->dapm_mutex
);
2380 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2383 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2384 * @w: The widget for which to update the flags
2386 * Some widgets have a dynamic category which depends on which neighbors they
2387 * are connected to. This function update the category for these widgets.
2389 * This function must be called whenever a path is added or removed to a widget.
2391 static void dapm_update_widget_flags(struct snd_soc_dapm_widget
*w
)
2393 enum snd_soc_dapm_direction dir
;
2394 struct snd_soc_dapm_path
*p
;
2398 case snd_soc_dapm_input
:
2399 /* On a fully routed card a input is never a source */
2400 if (w
->dapm
->card
->fully_routed
)
2402 ep
= SND_SOC_DAPM_EP_SOURCE
;
2403 snd_soc_dapm_widget_for_each_source_path(w
, p
) {
2404 if (p
->source
->id
== snd_soc_dapm_micbias
||
2405 p
->source
->id
== snd_soc_dapm_mic
||
2406 p
->source
->id
== snd_soc_dapm_line
||
2407 p
->source
->id
== snd_soc_dapm_output
) {
2413 case snd_soc_dapm_output
:
2414 /* On a fully routed card a output is never a sink */
2415 if (w
->dapm
->card
->fully_routed
)
2417 ep
= SND_SOC_DAPM_EP_SINK
;
2418 snd_soc_dapm_widget_for_each_sink_path(w
, p
) {
2419 if (p
->sink
->id
== snd_soc_dapm_spk
||
2420 p
->sink
->id
== snd_soc_dapm_hp
||
2421 p
->sink
->id
== snd_soc_dapm_line
||
2422 p
->sink
->id
== snd_soc_dapm_input
) {
2428 case snd_soc_dapm_line
:
2430 snd_soc_dapm_for_each_direction(dir
) {
2431 if (!list_empty(&w
->edges
[dir
]))
2432 ep
|= SND_SOC_DAPM_DIR_TO_EP(dir
);
2442 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context
*dapm
,
2443 struct snd_soc_dapm_widget
*source
, struct snd_soc_dapm_widget
*sink
,
2444 const char *control
)
2446 bool dynamic_source
= false;
2447 bool dynamic_sink
= false;
2452 switch (source
->id
) {
2453 case snd_soc_dapm_demux
:
2454 dynamic_source
= true;
2461 case snd_soc_dapm_mux
:
2462 case snd_soc_dapm_switch
:
2463 case snd_soc_dapm_mixer
:
2464 case snd_soc_dapm_mixer_named_ctl
:
2465 dynamic_sink
= true;
2471 if (dynamic_source
&& dynamic_sink
) {
2473 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2474 source
->name
, control
, sink
->name
);
2476 } else if (!dynamic_source
&& !dynamic_sink
) {
2478 "Control not supported for path %s -> [%s] -> %s\n",
2479 source
->name
, control
, sink
->name
);
2486 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
2487 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
2488 const char *control
,
2489 int (*connected
)(struct snd_soc_dapm_widget
*source
,
2490 struct snd_soc_dapm_widget
*sink
))
2492 struct snd_soc_dapm_widget
*widgets
[2];
2493 enum snd_soc_dapm_direction dir
;
2494 struct snd_soc_dapm_path
*path
;
2497 if (wsink
->is_supply
&& !wsource
->is_supply
) {
2499 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2500 wsource
->name
, wsink
->name
);
2504 if (connected
&& !wsource
->is_supply
) {
2506 "connected() callback only supported for supply widgets (%s -> %s)\n",
2507 wsource
->name
, wsink
->name
);
2511 if (wsource
->is_supply
&& control
) {
2513 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2514 wsource
->name
, control
, wsink
->name
);
2518 ret
= snd_soc_dapm_check_dynamic_path(dapm
, wsource
, wsink
, control
);
2522 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2526 path
->node
[SND_SOC_DAPM_DIR_IN
] = wsource
;
2527 path
->node
[SND_SOC_DAPM_DIR_OUT
] = wsink
;
2528 widgets
[SND_SOC_DAPM_DIR_IN
] = wsource
;
2529 widgets
[SND_SOC_DAPM_DIR_OUT
] = wsink
;
2531 path
->connected
= connected
;
2532 INIT_LIST_HEAD(&path
->list
);
2533 INIT_LIST_HEAD(&path
->list_kcontrol
);
2535 if (wsource
->is_supply
|| wsink
->is_supply
)
2536 path
->is_supply
= 1;
2538 /* connect static paths */
2539 if (control
== NULL
) {
2542 switch (wsource
->id
) {
2543 case snd_soc_dapm_demux
:
2544 ret
= dapm_connect_mux(dapm
, path
, control
, wsource
);
2552 switch (wsink
->id
) {
2553 case snd_soc_dapm_mux
:
2554 ret
= dapm_connect_mux(dapm
, path
, control
, wsink
);
2558 case snd_soc_dapm_switch
:
2559 case snd_soc_dapm_mixer
:
2560 case snd_soc_dapm_mixer_named_ctl
:
2561 ret
= dapm_connect_mixer(dapm
, path
, control
);
2570 list_add(&path
->list
, &dapm
->card
->paths
);
2571 snd_soc_dapm_for_each_direction(dir
)
2572 list_add(&path
->list_node
[dir
], &widgets
[dir
]->edges
[dir
]);
2574 snd_soc_dapm_for_each_direction(dir
) {
2575 dapm_update_widget_flags(widgets
[dir
]);
2576 dapm_mark_dirty(widgets
[dir
], "Route added");
2579 if (dapm
->card
->instantiated
&& path
->connect
)
2580 dapm_path_invalidate(path
);
2588 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2589 const struct snd_soc_dapm_route
*route
)
2591 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2592 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2595 char prefixed_sink
[80];
2596 char prefixed_source
[80];
2600 prefix
= soc_dapm_prefix(dapm
);
2602 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2603 prefix
, route
->sink
);
2604 sink
= prefixed_sink
;
2605 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2606 prefix
, route
->source
);
2607 source
= prefixed_source
;
2610 source
= route
->source
;
2613 wsource
= dapm_wcache_lookup(&dapm
->path_source_cache
, source
);
2614 wsink
= dapm_wcache_lookup(&dapm
->path_sink_cache
, sink
);
2616 if (wsink
&& wsource
)
2620 * find src and dest widgets over all widgets but favor a widget from
2621 * current DAPM context
2623 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2624 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2626 if (w
->dapm
== dapm
) {
2633 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2635 if (w
->dapm
== dapm
) {
2642 /* use widget from another DAPM context if not found from this */
2648 if (wsource
== NULL
) {
2649 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2653 if (wsink
== NULL
) {
2654 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2660 dapm_wcache_update(&dapm
->path_sink_cache
, wsink
);
2661 dapm_wcache_update(&dapm
->path_source_cache
, wsource
);
2663 ret
= snd_soc_dapm_add_path(dapm
, wsource
, wsink
, route
->control
,
2670 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2671 source
, route
->control
, sink
);
2675 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2676 const struct snd_soc_dapm_route
*route
)
2678 struct snd_soc_dapm_widget
*wsource
, *wsink
;
2679 struct snd_soc_dapm_path
*path
, *p
;
2682 char prefixed_sink
[80];
2683 char prefixed_source
[80];
2686 if (route
->control
) {
2688 "ASoC: Removal of routes with controls not supported\n");
2692 prefix
= soc_dapm_prefix(dapm
);
2694 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2695 prefix
, route
->sink
);
2696 sink
= prefixed_sink
;
2697 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2698 prefix
, route
->source
);
2699 source
= prefixed_source
;
2702 source
= route
->source
;
2706 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2707 if (strcmp(p
->source
->name
, source
) != 0)
2709 if (strcmp(p
->sink
->name
, sink
) != 0)
2716 wsource
= path
->source
;
2719 dapm_mark_dirty(wsource
, "Route removed");
2720 dapm_mark_dirty(wsink
, "Route removed");
2722 dapm_path_invalidate(path
);
2724 dapm_free_path(path
);
2726 /* Update any path related flags */
2727 dapm_update_widget_flags(wsource
);
2728 dapm_update_widget_flags(wsink
);
2730 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
2738 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2739 * @dapm: DAPM context
2740 * @route: audio routes
2741 * @num: number of routes
2743 * Connects 2 dapm widgets together via a named audio path. The sink is
2744 * the widget receiving the audio signal, whilst the source is the sender
2745 * of the audio signal.
2747 * Returns 0 for success else error. On error all resources can be freed
2748 * with a call to snd_soc_card_free().
2750 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2751 const struct snd_soc_dapm_route
*route
, int num
)
2755 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2756 for (i
= 0; i
< num
; i
++) {
2757 r
= snd_soc_dapm_add_route(dapm
, route
);
2759 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
2761 route
->control
? route
->control
: "direct",
2767 mutex_unlock(&dapm
->card
->dapm_mutex
);
2771 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2774 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2775 * @dapm: DAPM context
2776 * @route: audio routes
2777 * @num: number of routes
2779 * Removes routes from the DAPM context.
2781 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2782 const struct snd_soc_dapm_route
*route
, int num
)
2786 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2787 for (i
= 0; i
< num
; i
++) {
2788 snd_soc_dapm_del_route(dapm
, route
);
2791 mutex_unlock(&dapm
->card
->dapm_mutex
);
2795 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2797 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2798 const struct snd_soc_dapm_route
*route
)
2800 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2803 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2806 struct snd_soc_dapm_path
*path
;
2810 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
2816 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
2821 if (route
->control
|| route
->connected
)
2822 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
2823 route
->source
, route
->sink
);
2825 snd_soc_dapm_widget_for_each_sink_path(source
, path
) {
2826 if (path
->sink
== sink
) {
2833 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
2834 route
->source
, route
->sink
);
2836 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
2837 count
, route
->source
, route
->sink
);
2843 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2844 * @dapm: DAPM context
2845 * @route: audio routes
2846 * @num: number of routes
2848 * Mark existing routes matching those specified in the passed array
2849 * as being weak, meaning that they are ignored for the purpose of
2850 * power decisions. The main intended use case is for sidetone paths
2851 * which couple audio between other independent paths if they are both
2852 * active in order to make the combination work better at the user
2853 * level but which aren't intended to be "used".
2855 * Note that CODEC drivers should not use this as sidetone type paths
2856 * can frequently also be used as bypass paths.
2858 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2859 const struct snd_soc_dapm_route
*route
, int num
)
2864 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2865 for (i
= 0; i
< num
; i
++) {
2866 err
= snd_soc_dapm_weak_route(dapm
, route
);
2871 mutex_unlock(&dapm
->card
->dapm_mutex
);
2875 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2878 * snd_soc_dapm_new_widgets - add new dapm widgets
2879 * @card: card to be checked for new dapm widgets
2881 * Checks the codec for any new dapm widgets and creates them if found.
2883 * Returns 0 for success.
2885 int snd_soc_dapm_new_widgets(struct snd_soc_card
*card
)
2887 struct snd_soc_dapm_widget
*w
;
2890 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2892 list_for_each_entry(w
, &card
->widgets
, list
)
2897 if (w
->num_kcontrols
) {
2898 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2899 sizeof(struct snd_kcontrol
*),
2901 if (!w
->kcontrols
) {
2902 mutex_unlock(&card
->dapm_mutex
);
2908 case snd_soc_dapm_switch
:
2909 case snd_soc_dapm_mixer
:
2910 case snd_soc_dapm_mixer_named_ctl
:
2913 case snd_soc_dapm_mux
:
2914 case snd_soc_dapm_demux
:
2917 case snd_soc_dapm_pga
:
2918 case snd_soc_dapm_out_drv
:
2921 case snd_soc_dapm_dai_link
:
2922 dapm_new_dai_link(w
);
2928 /* Read the initial power state from the device */
2930 soc_dapm_read(w
->dapm
, w
->reg
, &val
);
2931 val
= val
>> w
->shift
;
2933 if (val
== w
->on_val
)
2939 dapm_mark_dirty(w
, "new widget");
2940 dapm_debugfs_add_widget(w
);
2943 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2944 mutex_unlock(&card
->dapm_mutex
);
2947 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2950 * snd_soc_dapm_get_volsw - dapm mixer get callback
2951 * @kcontrol: mixer control
2952 * @ucontrol: control element information
2954 * Callback to get the value of a dapm mixer control.
2956 * Returns 0 for success.
2958 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2959 struct snd_ctl_elem_value
*ucontrol
)
2961 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
2962 struct snd_soc_card
*card
= dapm
->card
;
2963 struct soc_mixer_control
*mc
=
2964 (struct soc_mixer_control
*)kcontrol
->private_value
;
2966 unsigned int shift
= mc
->shift
;
2968 unsigned int mask
= (1 << fls(max
)) - 1;
2969 unsigned int invert
= mc
->invert
;
2973 if (snd_soc_volsw_is_stereo(mc
))
2975 "ASoC: Control '%s' is stereo, which is not supported\n",
2978 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2979 if (dapm_kcontrol_is_powered(kcontrol
) && reg
!= SND_SOC_NOPM
) {
2980 ret
= soc_dapm_read(dapm
, reg
, &val
);
2981 val
= (val
>> shift
) & mask
;
2983 val
= dapm_kcontrol_get_value(kcontrol
);
2985 mutex_unlock(&card
->dapm_mutex
);
2988 ucontrol
->value
.integer
.value
[0] = max
- val
;
2990 ucontrol
->value
.integer
.value
[0] = val
;
2994 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2997 * snd_soc_dapm_put_volsw - dapm mixer set callback
2998 * @kcontrol: mixer control
2999 * @ucontrol: control element information
3001 * Callback to set the value of a dapm mixer control.
3003 * Returns 0 for success.
3005 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
3006 struct snd_ctl_elem_value
*ucontrol
)
3008 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3009 struct snd_soc_card
*card
= dapm
->card
;
3010 struct soc_mixer_control
*mc
=
3011 (struct soc_mixer_control
*)kcontrol
->private_value
;
3013 unsigned int shift
= mc
->shift
;
3015 unsigned int mask
= (1 << fls(max
)) - 1;
3016 unsigned int invert
= mc
->invert
;
3018 int connect
, change
, reg_change
= 0;
3019 struct snd_soc_dapm_update update
;
3022 if (snd_soc_volsw_is_stereo(mc
))
3024 "ASoC: Control '%s' is stereo, which is not supported\n",
3027 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
3033 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3035 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3037 if (reg
!= SND_SOC_NOPM
) {
3038 mask
= mask
<< shift
;
3041 reg_change
= soc_dapm_test_bits(dapm
, reg
, mask
, val
);
3044 if (change
|| reg_change
) {
3046 update
.kcontrol
= kcontrol
;
3050 card
->update
= &update
;
3052 change
|= reg_change
;
3054 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
3056 card
->update
= NULL
;
3059 mutex_unlock(&card
->dapm_mutex
);
3062 soc_dpcm_runtime_update(card
);
3066 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
3069 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3070 * @kcontrol: mixer control
3071 * @ucontrol: control element information
3073 * Callback to get the value of a dapm enumerated double mixer control.
3075 * Returns 0 for success.
3077 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
3078 struct snd_ctl_elem_value
*ucontrol
)
3080 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3081 struct snd_soc_card
*card
= dapm
->card
;
3082 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3083 unsigned int reg_val
, val
;
3085 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3086 if (e
->reg
!= SND_SOC_NOPM
&& dapm_kcontrol_is_powered(kcontrol
)) {
3087 int ret
= soc_dapm_read(dapm
, e
->reg
, ®_val
);
3089 mutex_unlock(&card
->dapm_mutex
);
3093 reg_val
= dapm_kcontrol_get_value(kcontrol
);
3095 mutex_unlock(&card
->dapm_mutex
);
3097 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
3098 ucontrol
->value
.enumerated
.item
[0] = snd_soc_enum_val_to_item(e
, val
);
3099 if (e
->shift_l
!= e
->shift_r
) {
3100 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
3101 val
= snd_soc_enum_val_to_item(e
, val
);
3102 ucontrol
->value
.enumerated
.item
[1] = val
;
3107 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
3110 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3111 * @kcontrol: mixer control
3112 * @ucontrol: control element information
3114 * Callback to set the value of a dapm enumerated double mixer control.
3116 * Returns 0 for success.
3118 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
3119 struct snd_ctl_elem_value
*ucontrol
)
3121 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3122 struct snd_soc_card
*card
= dapm
->card
;
3123 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3124 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
3125 unsigned int val
, change
, reg_change
= 0;
3127 struct snd_soc_dapm_update update
;
3130 if (item
[0] >= e
->items
)
3133 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
3134 mask
= e
->mask
<< e
->shift_l
;
3135 if (e
->shift_l
!= e
->shift_r
) {
3136 if (item
[1] > e
->items
)
3138 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_l
;
3139 mask
|= e
->mask
<< e
->shift_r
;
3142 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3144 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3146 if (e
->reg
!= SND_SOC_NOPM
)
3147 reg_change
= soc_dapm_test_bits(dapm
, e
->reg
, mask
, val
);
3149 if (change
|| reg_change
) {
3151 update
.kcontrol
= kcontrol
;
3152 update
.reg
= e
->reg
;
3155 card
->update
= &update
;
3157 change
|= reg_change
;
3159 ret
= soc_dapm_mux_update_power(card
, kcontrol
, item
[0], e
);
3161 card
->update
= NULL
;
3164 mutex_unlock(&card
->dapm_mutex
);
3167 soc_dpcm_runtime_update(card
);
3171 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
3174 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3176 * @kcontrol: mixer control
3177 * @uinfo: control element information
3179 * Callback to provide information about a pin switch control.
3181 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
3182 struct snd_ctl_elem_info
*uinfo
)
3184 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
3186 uinfo
->value
.integer
.min
= 0;
3187 uinfo
->value
.integer
.max
= 1;
3191 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
3194 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3196 * @kcontrol: mixer control
3199 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
3200 struct snd_ctl_elem_value
*ucontrol
)
3202 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3203 const char *pin
= (const char *)kcontrol
->private_value
;
3205 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3207 ucontrol
->value
.integer
.value
[0] =
3208 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
3210 mutex_unlock(&card
->dapm_mutex
);
3214 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
3217 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3219 * @kcontrol: mixer control
3222 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3223 struct snd_ctl_elem_value
*ucontrol
)
3225 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3226 const char *pin
= (const char *)kcontrol
->private_value
;
3228 if (ucontrol
->value
.integer
.value
[0])
3229 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3231 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3233 snd_soc_dapm_sync(&card
->dapm
);
3236 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3238 struct snd_soc_dapm_widget
*
3239 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3240 const struct snd_soc_dapm_widget
*widget
)
3242 struct snd_soc_dapm_widget
*w
;
3244 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3245 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3248 "ASoC: Failed to create DAPM control %s\n",
3251 mutex_unlock(&dapm
->card
->dapm_mutex
);
3255 struct snd_soc_dapm_widget
*
3256 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context
*dapm
,
3257 const struct snd_soc_dapm_widget
*widget
)
3259 enum snd_soc_dapm_direction dir
;
3260 struct snd_soc_dapm_widget
*w
;
3264 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3268 case snd_soc_dapm_regulator_supply
:
3269 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3270 if (IS_ERR(w
->regulator
)) {
3271 ret
= PTR_ERR(w
->regulator
);
3272 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3277 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3278 ret
= regulator_allow_bypass(w
->regulator
, true);
3280 dev_warn(w
->dapm
->dev
,
3281 "ASoC: Failed to bypass %s: %d\n",
3285 case snd_soc_dapm_clock_supply
:
3286 #ifdef CONFIG_CLKDEV_LOOKUP
3287 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3288 if (IS_ERR(w
->clk
)) {
3289 ret
= PTR_ERR(w
->clk
);
3290 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3302 prefix
= soc_dapm_prefix(dapm
);
3304 w
->name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, widget
->name
);
3306 w
->name
= kstrdup_const(widget
->name
, GFP_KERNEL
);
3307 if (w
->name
== NULL
) {
3313 case snd_soc_dapm_mic
:
3314 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3315 w
->power_check
= dapm_generic_check_power
;
3317 case snd_soc_dapm_input
:
3318 if (!dapm
->card
->fully_routed
)
3319 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3320 w
->power_check
= dapm_generic_check_power
;
3322 case snd_soc_dapm_spk
:
3323 case snd_soc_dapm_hp
:
3324 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3325 w
->power_check
= dapm_generic_check_power
;
3327 case snd_soc_dapm_output
:
3328 if (!dapm
->card
->fully_routed
)
3329 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3330 w
->power_check
= dapm_generic_check_power
;
3332 case snd_soc_dapm_vmid
:
3333 case snd_soc_dapm_siggen
:
3334 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3335 w
->power_check
= dapm_always_on_check_power
;
3337 case snd_soc_dapm_mux
:
3338 case snd_soc_dapm_demux
:
3339 case snd_soc_dapm_switch
:
3340 case snd_soc_dapm_mixer
:
3341 case snd_soc_dapm_mixer_named_ctl
:
3342 case snd_soc_dapm_adc
:
3343 case snd_soc_dapm_aif_out
:
3344 case snd_soc_dapm_dac
:
3345 case snd_soc_dapm_aif_in
:
3346 case snd_soc_dapm_pga
:
3347 case snd_soc_dapm_out_drv
:
3348 case snd_soc_dapm_micbias
:
3349 case snd_soc_dapm_line
:
3350 case snd_soc_dapm_dai_link
:
3351 case snd_soc_dapm_dai_out
:
3352 case snd_soc_dapm_dai_in
:
3353 w
->power_check
= dapm_generic_check_power
;
3355 case snd_soc_dapm_supply
:
3356 case snd_soc_dapm_regulator_supply
:
3357 case snd_soc_dapm_clock_supply
:
3358 case snd_soc_dapm_kcontrol
:
3360 w
->power_check
= dapm_supply_check_power
;
3363 w
->power_check
= dapm_always_on_check_power
;
3368 INIT_LIST_HEAD(&w
->list
);
3369 INIT_LIST_HEAD(&w
->dirty
);
3370 list_add_tail(&w
->list
, &dapm
->card
->widgets
);
3372 snd_soc_dapm_for_each_direction(dir
) {
3373 INIT_LIST_HEAD(&w
->edges
[dir
]);
3374 w
->endpoints
[dir
] = -1;
3377 /* machine layer set ups unconnected pins and insertions */
3383 * snd_soc_dapm_new_controls - create new dapm controls
3384 * @dapm: DAPM context
3385 * @widget: widget array
3386 * @num: number of widgets
3388 * Creates new DAPM controls based upon the templates.
3390 * Returns 0 for success else error.
3392 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3393 const struct snd_soc_dapm_widget
*widget
,
3396 struct snd_soc_dapm_widget
*w
;
3400 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3401 for (i
= 0; i
< num
; i
++) {
3402 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3405 "ASoC: Failed to create DAPM control %s\n",
3412 mutex_unlock(&dapm
->card
->dapm_mutex
);
3415 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3417 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3418 struct snd_kcontrol
*kcontrol
, int event
)
3420 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3421 struct snd_soc_dai
*source
, *sink
;
3422 const struct snd_soc_pcm_stream
*config
= w
->params
+ w
->params_select
;
3423 struct snd_pcm_substream substream
;
3424 struct snd_pcm_hw_params
*params
= NULL
;
3428 if (WARN_ON(!config
) ||
3429 WARN_ON(list_empty(&w
->edges
[SND_SOC_DAPM_DIR_OUT
]) ||
3430 list_empty(&w
->edges
[SND_SOC_DAPM_DIR_IN
])))
3433 /* We only support a single source and sink, pick the first */
3434 source_p
= list_first_entry(&w
->edges
[SND_SOC_DAPM_DIR_OUT
],
3435 struct snd_soc_dapm_path
,
3436 list_node
[SND_SOC_DAPM_DIR_OUT
]);
3437 sink_p
= list_first_entry(&w
->edges
[SND_SOC_DAPM_DIR_IN
],
3438 struct snd_soc_dapm_path
,
3439 list_node
[SND_SOC_DAPM_DIR_IN
]);
3441 source
= source_p
->source
->priv
;
3442 sink
= sink_p
->sink
->priv
;
3444 /* Be a little careful as we don't want to overflow the mask array */
3445 if (config
->formats
) {
3446 fmt
= ffs(config
->formats
) - 1;
3448 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3453 /* Currently very limited parameter selection */
3454 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3459 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3461 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3463 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3466 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3467 = config
->channels_min
;
3468 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3469 = config
->channels_max
;
3471 memset(&substream
, 0, sizeof(substream
));
3474 case SND_SOC_DAPM_PRE_PMU
:
3475 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3476 ret
= soc_dai_hw_params(&substream
, params
, source
);
3480 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3481 ret
= soc_dai_hw_params(&substream
, params
, sink
);
3486 case SND_SOC_DAPM_POST_PMU
:
3487 ret
= snd_soc_dai_digital_mute(sink
, 0,
3488 SNDRV_PCM_STREAM_PLAYBACK
);
3489 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3490 dev_warn(sink
->dev
, "ASoC: Failed to unmute: %d\n", ret
);
3494 case SND_SOC_DAPM_PRE_PMD
:
3495 ret
= snd_soc_dai_digital_mute(sink
, 1,
3496 SNDRV_PCM_STREAM_PLAYBACK
);
3497 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3498 dev_warn(sink
->dev
, "ASoC: Failed to mute: %d\n", ret
);
3503 WARN(1, "Unknown event %d\n", event
);
3512 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol
*kcontrol
,
3513 struct snd_ctl_elem_value
*ucontrol
)
3515 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
3517 ucontrol
->value
.integer
.value
[0] = w
->params_select
;
3522 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol
*kcontrol
,
3523 struct snd_ctl_elem_value
*ucontrol
)
3525 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
3527 /* Can't change the config when widget is already powered */
3531 if (ucontrol
->value
.integer
.value
[0] == w
->params_select
)
3534 if (ucontrol
->value
.integer
.value
[0] >= w
->num_params
)
3537 w
->params_select
= ucontrol
->value
.integer
.value
[0];
3542 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3543 const struct snd_soc_pcm_stream
*params
,
3544 unsigned int num_params
,
3545 struct snd_soc_dapm_widget
*source
,
3546 struct snd_soc_dapm_widget
*sink
)
3548 struct snd_soc_dapm_widget
template;
3549 struct snd_soc_dapm_widget
*w
;
3552 unsigned long private_value
;
3553 const char **w_param_text
;
3554 struct soc_enum w_param_enum
[] = {
3555 SOC_ENUM_SINGLE(0, 0, 0, NULL
),
3557 struct snd_kcontrol_new kcontrol_dai_link
[] = {
3558 SOC_ENUM_EXT(NULL
, w_param_enum
[0],
3559 snd_soc_dapm_dai_link_get
,
3560 snd_soc_dapm_dai_link_put
),
3562 const struct snd_soc_pcm_stream
*config
= params
;
3564 w_param_text
= devm_kcalloc(card
->dev
, num_params
,
3565 sizeof(char *), GFP_KERNEL
);
3569 link_name
= devm_kasprintf(card
->dev
, GFP_KERNEL
, "%s-%s",
3570 source
->name
, sink
->name
);
3573 goto outfree_w_param
;
3576 for (count
= 0 ; count
< num_params
; count
++) {
3577 if (!config
->stream_name
) {
3578 dev_warn(card
->dapm
.dev
,
3579 "ASoC: anonymous config %d for dai link %s\n",
3581 w_param_text
[count
] =
3582 devm_kasprintf(card
->dev
, GFP_KERNEL
,
3583 "Anonymous Configuration %d",
3585 if (!w_param_text
[count
]) {
3587 goto outfree_link_name
;
3590 w_param_text
[count
] = devm_kmemdup(card
->dev
,
3591 config
->stream_name
,
3592 strlen(config
->stream_name
) + 1,
3594 if (!w_param_text
[count
]) {
3596 goto outfree_link_name
;
3601 w_param_enum
[0].items
= num_params
;
3602 w_param_enum
[0].texts
= w_param_text
;
3604 memset(&template, 0, sizeof(template));
3605 template.reg
= SND_SOC_NOPM
;
3606 template.id
= snd_soc_dapm_dai_link
;
3607 template.name
= link_name
;
3608 template.event
= snd_soc_dai_link_event
;
3609 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3610 SND_SOC_DAPM_PRE_PMD
;
3611 template.num_kcontrols
= 1;
3612 /* duplicate w_param_enum on heap so that memory persists */
3614 (unsigned long) devm_kmemdup(card
->dev
,
3615 (void *)(kcontrol_dai_link
[0].private_value
),
3616 sizeof(struct soc_enum
), GFP_KERNEL
);
3617 if (!private_value
) {
3618 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
3621 goto outfree_link_name
;
3623 kcontrol_dai_link
[0].private_value
= private_value
;
3624 /* duplicate kcontrol_dai_link on heap so that memory persists */
3625 template.kcontrol_news
=
3626 devm_kmemdup(card
->dev
, &kcontrol_dai_link
[0],
3627 sizeof(struct snd_kcontrol_new
),
3629 if (!template.kcontrol_news
) {
3630 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
3633 goto outfree_private_value
;
3636 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
3638 w
= snd_soc_dapm_new_control_unlocked(&card
->dapm
, &template);
3640 dev_err(card
->dev
, "ASoC: Failed to create %s widget\n",
3643 goto outfree_kcontrol_news
;
3647 w
->num_params
= num_params
;
3649 ret
= snd_soc_dapm_add_path(&card
->dapm
, source
, w
, NULL
, NULL
);
3652 return snd_soc_dapm_add_path(&card
->dapm
, w
, sink
, NULL
, NULL
);
3655 devm_kfree(card
->dev
, w
);
3656 outfree_kcontrol_news
:
3657 devm_kfree(card
->dev
, (void *)template.kcontrol_news
);
3658 outfree_private_value
:
3659 devm_kfree(card
->dev
, (void *)private_value
);
3661 devm_kfree(card
->dev
, link_name
);
3663 for (count
= 0 ; count
< num_params
; count
++)
3664 devm_kfree(card
->dev
, (void *)w_param_text
[count
]);
3665 devm_kfree(card
->dev
, w_param_text
);
3670 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3671 struct snd_soc_dai
*dai
)
3673 struct snd_soc_dapm_widget
template;
3674 struct snd_soc_dapm_widget
*w
;
3676 WARN_ON(dapm
->dev
!= dai
->dev
);
3678 memset(&template, 0, sizeof(template));
3679 template.reg
= SND_SOC_NOPM
;
3681 if (dai
->driver
->playback
.stream_name
) {
3682 template.id
= snd_soc_dapm_dai_in
;
3683 template.name
= dai
->driver
->playback
.stream_name
;
3684 template.sname
= dai
->driver
->playback
.stream_name
;
3686 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3689 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
3691 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3692 dai
->driver
->playback
.stream_name
);
3697 dai
->playback_widget
= w
;
3700 if (dai
->driver
->capture
.stream_name
) {
3701 template.id
= snd_soc_dapm_dai_out
;
3702 template.name
= dai
->driver
->capture
.stream_name
;
3703 template.sname
= dai
->driver
->capture
.stream_name
;
3705 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3708 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
3710 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3711 dai
->driver
->capture
.stream_name
);
3716 dai
->capture_widget
= w
;
3722 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3724 struct snd_soc_dapm_widget
*dai_w
, *w
;
3725 struct snd_soc_dapm_widget
*src
, *sink
;
3726 struct snd_soc_dai
*dai
;
3728 /* For each DAI widget... */
3729 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3730 switch (dai_w
->id
) {
3731 case snd_soc_dapm_dai_in
:
3732 case snd_soc_dapm_dai_out
:
3740 /* ...find all widgets with the same stream and link them */
3741 list_for_each_entry(w
, &card
->widgets
, list
) {
3742 if (w
->dapm
!= dai_w
->dapm
)
3746 case snd_soc_dapm_dai_in
:
3747 case snd_soc_dapm_dai_out
:
3753 if (!w
->sname
|| !strstr(w
->sname
, dai_w
->sname
))
3756 if (dai_w
->id
== snd_soc_dapm_dai_in
) {
3763 dev_dbg(dai
->dev
, "%s -> %s\n", src
->name
, sink
->name
);
3764 snd_soc_dapm_add_path(w
->dapm
, src
, sink
, NULL
, NULL
);
3771 static void dapm_connect_dai_link_widgets(struct snd_soc_card
*card
,
3772 struct snd_soc_pcm_runtime
*rtd
)
3774 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3775 struct snd_soc_dapm_widget
*sink
, *source
;
3778 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
3779 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
3781 /* connect BE DAI playback if widgets are valid */
3782 if (codec_dai
->playback_widget
&& cpu_dai
->playback_widget
) {
3783 source
= cpu_dai
->playback_widget
;
3784 sink
= codec_dai
->playback_widget
;
3785 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3786 cpu_dai
->component
->name
, source
->name
,
3787 codec_dai
->component
->name
, sink
->name
);
3789 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3793 /* connect BE DAI capture if widgets are valid */
3794 if (codec_dai
->capture_widget
&& cpu_dai
->capture_widget
) {
3795 source
= codec_dai
->capture_widget
;
3796 sink
= cpu_dai
->capture_widget
;
3797 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3798 codec_dai
->component
->name
, source
->name
,
3799 cpu_dai
->component
->name
, sink
->name
);
3801 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3807 static void soc_dapm_dai_stream_event(struct snd_soc_dai
*dai
, int stream
,
3810 struct snd_soc_dapm_widget
*w
;
3813 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
3814 w
= dai
->playback_widget
;
3816 w
= dai
->capture_widget
;
3819 dapm_mark_dirty(w
, "stream event");
3821 if (w
->id
== snd_soc_dapm_dai_in
) {
3822 ep
= SND_SOC_DAPM_EP_SOURCE
;
3823 dapm_widget_invalidate_input_paths(w
);
3825 ep
= SND_SOC_DAPM_EP_SINK
;
3826 dapm_widget_invalidate_output_paths(w
);
3830 case SND_SOC_DAPM_STREAM_START
:
3834 case SND_SOC_DAPM_STREAM_STOP
:
3838 case SND_SOC_DAPM_STREAM_SUSPEND
:
3839 case SND_SOC_DAPM_STREAM_RESUME
:
3840 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3841 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3847 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card
*card
)
3849 struct snd_soc_pcm_runtime
*rtd
= card
->rtd
;
3852 /* for each BE DAI link... */
3853 for (i
= 0; i
< card
->num_rtd
; i
++) {
3854 rtd
= &card
->rtd
[i
];
3857 * dynamic FE links have no fixed DAI mapping.
3858 * CODEC<->CODEC links have no direct connection.
3860 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->params
)
3863 dapm_connect_dai_link_widgets(card
, rtd
);
3867 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3872 soc_dapm_dai_stream_event(rtd
->cpu_dai
, stream
, event
);
3873 for (i
= 0; i
< rtd
->num_codecs
; i
++)
3874 soc_dapm_dai_stream_event(rtd
->codec_dais
[i
], stream
, event
);
3876 dapm_power_widgets(rtd
->card
, event
);
3880 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3881 * @rtd: PCM runtime data
3882 * @stream: stream name
3883 * @event: stream event
3885 * Sends a stream event to the dapm core. The core then makes any
3886 * necessary widget power changes.
3888 * Returns 0 for success else error.
3890 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3893 struct snd_soc_card
*card
= rtd
->card
;
3895 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3896 soc_dapm_stream_event(rtd
, stream
, event
);
3897 mutex_unlock(&card
->dapm_mutex
);
3901 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3902 * @dapm: DAPM context
3905 * Enables input/output pin and its parents or children widgets iff there is
3906 * a valid audio route and active audio stream.
3908 * Requires external locking.
3910 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3911 * do any widget power switching.
3913 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
3916 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
3918 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked
);
3921 * snd_soc_dapm_enable_pin - enable pin.
3922 * @dapm: DAPM context
3925 * Enables input/output pin and its parents or children widgets iff there is
3926 * a valid audio route and active audio stream.
3928 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3929 * do any widget power switching.
3931 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3935 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3937 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 1);
3939 mutex_unlock(&dapm
->card
->dapm_mutex
);
3943 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
3946 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3947 * @dapm: DAPM context
3950 * Enables input/output pin regardless of any other state. This is
3951 * intended for use with microphone bias supplies used in microphone
3954 * Requires external locking.
3956 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3957 * do any widget power switching.
3959 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
3962 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3965 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
3969 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
3970 if (!w
->connected
) {
3972 * w->force does not affect the number of input or output paths,
3973 * so we only have to recheck if w->connected is changed
3975 dapm_widget_invalidate_input_paths(w
);
3976 dapm_widget_invalidate_output_paths(w
);
3980 dapm_mark_dirty(w
, "force enable");
3984 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked
);
3987 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3988 * @dapm: DAPM context
3991 * Enables input/output pin regardless of any other state. This is
3992 * intended for use with microphone bias supplies used in microphone
3995 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3996 * do any widget power switching.
3998 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
4003 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4005 ret
= snd_soc_dapm_force_enable_pin_unlocked(dapm
, pin
);
4007 mutex_unlock(&dapm
->card
->dapm_mutex
);
4011 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
4014 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4015 * @dapm: DAPM context
4018 * Disables input/output pin and its parents or children widgets.
4020 * Requires external locking.
4022 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4023 * do any widget power switching.
4025 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4028 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4030 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked
);
4033 * snd_soc_dapm_disable_pin - disable pin.
4034 * @dapm: DAPM context
4037 * Disables input/output pin and its parents or children widgets.
4039 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4040 * do any widget power switching.
4042 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
4047 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4049 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4051 mutex_unlock(&dapm
->card
->dapm_mutex
);
4055 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
4058 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4059 * @dapm: DAPM context
4062 * Marks the specified pin as being not connected, disabling it along
4063 * any parent or child widgets. At present this is identical to
4064 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4065 * additional things such as disabling controls which only affect
4066 * paths through the pin.
4068 * Requires external locking.
4070 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4071 * do any widget power switching.
4073 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4076 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4078 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked
);
4081 * snd_soc_dapm_nc_pin - permanently disable pin.
4082 * @dapm: DAPM context
4085 * Marks the specified pin as being not connected, disabling it along
4086 * any parent or child widgets. At present this is identical to
4087 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4088 * additional things such as disabling controls which only affect
4089 * paths through the pin.
4091 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4092 * do any widget power switching.
4094 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
4098 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4100 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4102 mutex_unlock(&dapm
->card
->dapm_mutex
);
4106 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
4109 * snd_soc_dapm_get_pin_status - get audio pin status
4110 * @dapm: DAPM context
4111 * @pin: audio signal pin endpoint (or start point)
4113 * Get audio pin status - connected or disconnected.
4115 * Returns 1 for connected otherwise 0.
4117 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
4120 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
4123 return w
->connected
;
4127 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
4130 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4131 * @dapm: DAPM context
4132 * @pin: audio signal pin endpoint (or start point)
4134 * Mark the given endpoint or pin as ignoring suspend. When the
4135 * system is disabled a path between two endpoints flagged as ignoring
4136 * suspend will not be disabled. The path must already be enabled via
4137 * normal means at suspend time, it will not be turned on if it was not
4140 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
4143 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
4146 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4150 w
->ignore_suspend
= 1;
4154 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
4157 * snd_soc_dapm_free - free dapm resources
4158 * @dapm: DAPM context
4160 * Free all dapm widgets and resources.
4162 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
4164 dapm_debugfs_cleanup(dapm
);
4165 dapm_free_widgets(dapm
);
4166 list_del(&dapm
->list
);
4168 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
4170 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context
*dapm
)
4172 struct snd_soc_card
*card
= dapm
->card
;
4173 struct snd_soc_dapm_widget
*w
;
4174 LIST_HEAD(down_list
);
4177 mutex_lock(&card
->dapm_mutex
);
4179 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
4180 if (w
->dapm
!= dapm
)
4183 dapm_seq_insert(w
, &down_list
, false);
4189 /* If there were no widgets to power down we're already in
4193 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
4194 snd_soc_dapm_set_bias_level(dapm
,
4195 SND_SOC_BIAS_PREPARE
);
4196 dapm_seq_run(card
, &down_list
, 0, false);
4197 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
4198 snd_soc_dapm_set_bias_level(dapm
,
4199 SND_SOC_BIAS_STANDBY
);
4202 mutex_unlock(&card
->dapm_mutex
);
4206 * snd_soc_dapm_shutdown - callback for system shutdown
4208 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
4210 struct snd_soc_dapm_context
*dapm
;
4212 list_for_each_entry(dapm
, &card
->dapm_list
, list
) {
4213 if (dapm
!= &card
->dapm
) {
4214 soc_dapm_shutdown_dapm(dapm
);
4215 if (dapm
->bias_level
== SND_SOC_BIAS_STANDBY
)
4216 snd_soc_dapm_set_bias_level(dapm
,
4221 soc_dapm_shutdown_dapm(&card
->dapm
);
4222 if (card
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
4223 snd_soc_dapm_set_bias_level(&card
->dapm
,
4227 /* Module information */
4228 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4229 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4230 MODULE_LICENSE("GPL");