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
, const char *ctrl_name
)
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", ctrl_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", ctrl_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_widget() - Returns the widget associated to a
514 * @kcontrol: The kcontrol
516 struct snd_soc_dapm_widget
*snd_soc_dapm_kcontrol_widget(
517 struct snd_kcontrol
*kcontrol
)
519 return dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0];
521 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget
);
524 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
526 * @kcontrol: The kcontrol
528 * Note: This function must only be used on kcontrols that are known to have
529 * been registered for a CODEC. Otherwise the behaviour is undefined.
531 struct snd_soc_dapm_context
*snd_soc_dapm_kcontrol_dapm(
532 struct snd_kcontrol
*kcontrol
)
534 return dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0]->dapm
;
536 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm
);
538 static void dapm_reset(struct snd_soc_card
*card
)
540 struct snd_soc_dapm_widget
*w
;
542 lockdep_assert_held(&card
->dapm_mutex
);
544 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
546 list_for_each_entry(w
, &card
->widgets
, list
) {
547 w
->new_power
= w
->power
;
548 w
->power_checked
= false;
552 static const char *soc_dapm_prefix(struct snd_soc_dapm_context
*dapm
)
554 if (!dapm
->component
)
556 return dapm
->component
->name_prefix
;
559 static int soc_dapm_read(struct snd_soc_dapm_context
*dapm
, int reg
,
562 if (!dapm
->component
)
564 return snd_soc_component_read(dapm
->component
, reg
, value
);
567 static int soc_dapm_update_bits(struct snd_soc_dapm_context
*dapm
,
568 int reg
, unsigned int mask
, unsigned int value
)
570 if (!dapm
->component
)
572 return snd_soc_component_update_bits(dapm
->component
, reg
,
576 static int soc_dapm_test_bits(struct snd_soc_dapm_context
*dapm
,
577 int reg
, unsigned int mask
, unsigned int value
)
579 if (!dapm
->component
)
581 return snd_soc_component_test_bits(dapm
->component
, reg
, mask
, value
);
584 static void soc_dapm_async_complete(struct snd_soc_dapm_context
*dapm
)
587 snd_soc_component_async_complete(dapm
->component
);
590 static struct snd_soc_dapm_widget
*
591 dapm_wcache_lookup(struct snd_soc_dapm_wcache
*wcache
, const char *name
)
593 struct snd_soc_dapm_widget
*w
= wcache
->widget
;
594 struct list_head
*wlist
;
599 wlist
= &w
->dapm
->card
->widgets
;
601 list_for_each_entry_from(w
, wlist
, list
) {
602 if (!strcmp(name
, w
->name
))
613 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache
*wcache
,
614 struct snd_soc_dapm_widget
*w
)
620 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
621 * @dapm: The DAPM context for which to set the level
622 * @level: The level to set
624 * Forces the DAPM bias level to a specific state. It will call the bias level
625 * callback of DAPM context with the specified level. This will even happen if
626 * the context is already at the same level. Furthermore it will not go through
627 * the normal bias level sequencing, meaning any intermediate states between the
628 * current and the target state will not be entered.
630 * Note that the change in bias level is only temporary and the next time
631 * snd_soc_dapm_sync() is called the state will be set to the level as
632 * determined by the DAPM core. The function is mainly intended to be used to
633 * used during probe or resume from suspend to power up the device so
634 * initialization can be done, before the DAPM core takes over.
636 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context
*dapm
,
637 enum snd_soc_bias_level level
)
641 if (dapm
->set_bias_level
)
642 ret
= dapm
->set_bias_level(dapm
, level
);
645 dapm
->bias_level
= level
;
649 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level
);
652 * snd_soc_dapm_set_bias_level - set the bias level for the system
653 * @dapm: DAPM context
654 * @level: level to configure
656 * Configure the bias (power) levels for the SoC audio device.
658 * Returns 0 for success else error.
660 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
661 enum snd_soc_bias_level level
)
663 struct snd_soc_card
*card
= dapm
->card
;
666 trace_snd_soc_bias_level_start(card
, level
);
668 if (card
&& card
->set_bias_level
)
669 ret
= card
->set_bias_level(card
, dapm
, level
);
673 if (!card
|| dapm
!= &card
->dapm
)
674 ret
= snd_soc_dapm_force_bias_level(dapm
, level
);
679 if (card
&& card
->set_bias_level_post
)
680 ret
= card
->set_bias_level_post(card
, dapm
, level
);
682 trace_snd_soc_bias_level_done(card
, level
);
687 /* connect mux widget to its interconnecting audio paths */
688 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
689 struct snd_soc_dapm_path
*path
, const char *control_name
,
690 struct snd_soc_dapm_widget
*w
)
692 const struct snd_kcontrol_new
*kcontrol
= &w
->kcontrol_news
[0];
693 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
694 unsigned int val
, item
;
697 if (e
->reg
!= SND_SOC_NOPM
) {
698 soc_dapm_read(dapm
, e
->reg
, &val
);
699 val
= (val
>> e
->shift_l
) & e
->mask
;
700 item
= snd_soc_enum_val_to_item(e
, val
);
702 /* since a virtual mux has no backing registers to
703 * decide which path to connect, it will try to match
704 * with the first enumeration. This is to ensure
705 * that the default mux choice (the first) will be
706 * correctly powered up during initialization.
711 for (i
= 0; i
< e
->items
; i
++) {
712 if (!(strcmp(control_name
, e
->texts
[i
]))) {
713 path
->name
= e
->texts
[i
];
725 /* set up initial codec paths */
726 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path
*p
, int i
)
728 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
729 p
->sink
->kcontrol_news
[i
].private_value
;
730 unsigned int reg
= mc
->reg
;
731 unsigned int shift
= mc
->shift
;
732 unsigned int max
= mc
->max
;
733 unsigned int mask
= (1 << fls(max
)) - 1;
734 unsigned int invert
= mc
->invert
;
737 if (reg
!= SND_SOC_NOPM
) {
738 soc_dapm_read(p
->sink
->dapm
, reg
, &val
);
739 val
= (val
>> shift
) & mask
;
748 /* connect mixer widget to its interconnecting audio paths */
749 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
750 struct snd_soc_dapm_path
*path
, const char *control_name
)
754 /* search for mixer kcontrol */
755 for (i
= 0; i
< path
->sink
->num_kcontrols
; i
++) {
756 if (!strcmp(control_name
, path
->sink
->kcontrol_news
[i
].name
)) {
757 path
->name
= path
->sink
->kcontrol_news
[i
].name
;
758 dapm_set_mixer_path_status(path
, i
);
765 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
766 struct snd_soc_dapm_widget
*kcontrolw
,
767 const struct snd_kcontrol_new
*kcontrol_new
,
768 struct snd_kcontrol
**kcontrol
)
770 struct snd_soc_dapm_widget
*w
;
775 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
776 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
778 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
779 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
781 *kcontrol
= w
->kcontrols
[i
];
791 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
792 * create it. Either way, add the widget into the control's widget list
794 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget
*w
,
797 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
798 struct snd_card
*card
= dapm
->card
->snd_card
;
802 struct snd_kcontrol
*kcontrol
;
803 bool wname_in_long_name
, kcname_in_long_name
;
804 char *long_name
= NULL
;
808 prefix
= soc_dapm_prefix(dapm
);
810 prefix_len
= strlen(prefix
) + 1;
814 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[kci
],
819 wname_in_long_name
= false;
820 kcname_in_long_name
= true;
823 case snd_soc_dapm_switch
:
824 case snd_soc_dapm_mixer
:
825 case snd_soc_dapm_pga
:
826 case snd_soc_dapm_out_drv
:
827 wname_in_long_name
= true;
828 kcname_in_long_name
= true;
830 case snd_soc_dapm_mixer_named_ctl
:
831 wname_in_long_name
= false;
832 kcname_in_long_name
= true;
834 case snd_soc_dapm_demux
:
835 case snd_soc_dapm_mux
:
836 wname_in_long_name
= true;
837 kcname_in_long_name
= false;
844 if (wname_in_long_name
&& kcname_in_long_name
) {
846 * The control will get a prefix from the control
847 * creation process but we're also using the same
848 * prefix for widgets so cut the prefix off the
849 * front of the widget name.
851 long_name
= kasprintf(GFP_KERNEL
, "%s %s",
852 w
->name
+ prefix_len
,
853 w
->kcontrol_news
[kci
].name
);
854 if (long_name
== NULL
)
858 } else if (wname_in_long_name
) {
860 name
= w
->name
+ prefix_len
;
863 name
= w
->kcontrol_news
[kci
].name
;
866 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[kci
], NULL
, name
,
873 kcontrol
->private_free
= dapm_kcontrol_free
;
875 ret
= dapm_kcontrol_data_alloc(w
, kcontrol
, name
);
877 snd_ctl_free_one(kcontrol
);
881 ret
= snd_ctl_add(card
, kcontrol
);
884 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
890 ret
= dapm_kcontrol_add_widget(kcontrol
, w
);
892 w
->kcontrols
[kci
] = kcontrol
;
900 /* create new dapm mixer control */
901 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
904 struct snd_soc_dapm_path
*path
;
905 struct dapm_kcontrol_data
*data
;
908 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
910 snd_soc_dapm_widget_for_each_source_path(w
, path
) {
911 /* mixer/mux paths name must match control name */
912 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
915 if (!w
->kcontrols
[i
]) {
916 ret
= dapm_create_or_share_kcontrol(w
, i
);
921 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
923 data
= snd_kcontrol_chip(w
->kcontrols
[i
]);
925 snd_soc_dapm_add_path(data
->widget
->dapm
,
935 /* create new dapm mux control */
936 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
938 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
939 enum snd_soc_dapm_direction dir
;
940 struct snd_soc_dapm_path
*path
;
945 case snd_soc_dapm_mux
:
946 dir
= SND_SOC_DAPM_DIR_OUT
;
949 case snd_soc_dapm_demux
:
950 dir
= SND_SOC_DAPM_DIR_IN
;
957 if (w
->num_kcontrols
!= 1) {
959 "ASoC: %s %s has incorrect number of controls\n", type
,
964 if (list_empty(&w
->edges
[dir
])) {
965 dev_err(dapm
->dev
, "ASoC: %s %s has no paths\n", type
, w
->name
);
969 ret
= dapm_create_or_share_kcontrol(w
, 0);
973 snd_soc_dapm_widget_for_each_path(w
, dir
, path
) {
975 dapm_kcontrol_add_path(w
->kcontrols
[0], path
);
981 /* create new dapm volume control */
982 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
986 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
987 ret
= dapm_create_or_share_kcontrol(w
, i
);
995 /* create new dapm dai link control */
996 static int dapm_new_dai_link(struct snd_soc_dapm_widget
*w
)
999 struct snd_kcontrol
*kcontrol
;
1000 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1001 struct snd_card
*card
= dapm
->card
->snd_card
;
1003 /* create control for links with > 1 config */
1004 if (w
->num_params
<= 1)
1008 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
1009 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
], w
,
1011 ret
= snd_ctl_add(card
, kcontrol
);
1014 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1015 w
->name
, w
->kcontrol_news
[i
].name
, ret
);
1018 kcontrol
->private_data
= w
;
1019 w
->kcontrols
[i
] = kcontrol
;
1025 /* We implement power down on suspend by checking the power state of
1026 * the ALSA card - when we are suspending the ALSA state for the card
1029 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
1031 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
1034 case SNDRV_CTL_POWER_D3hot
:
1035 case SNDRV_CTL_POWER_D3cold
:
1036 if (widget
->ignore_suspend
)
1037 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
1039 return widget
->ignore_suspend
;
1045 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list
**list
,
1046 struct list_head
*widgets
)
1048 struct snd_soc_dapm_widget
*w
;
1049 struct list_head
*it
;
1050 unsigned int size
= 0;
1053 list_for_each(it
, widgets
)
1056 *list
= kzalloc(sizeof(**list
) + size
* sizeof(*w
), GFP_KERNEL
);
1060 list_for_each_entry(w
, widgets
, work_list
)
1061 (*list
)->widgets
[i
++] = w
;
1063 (*list
)->num_widgets
= i
;
1069 * Common implementation for is_connected_output_ep() and
1070 * is_connected_input_ep(). The function is inlined since the combined size of
1071 * the two specialized functions is only marginally larger then the size of the
1072 * generic function and at the same time the fast path of the specialized
1073 * functions is significantly smaller than the generic function.
1075 static __always_inline
int is_connected_ep(struct snd_soc_dapm_widget
*widget
,
1076 struct list_head
*list
, enum snd_soc_dapm_direction dir
,
1077 int (*fn
)(struct snd_soc_dapm_widget
*, struct list_head
*,
1078 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1079 enum snd_soc_dapm_direction
)),
1080 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1081 enum snd_soc_dapm_direction
))
1083 enum snd_soc_dapm_direction rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
1084 struct snd_soc_dapm_path
*path
;
1087 if (widget
->endpoints
[dir
] >= 0)
1088 return widget
->endpoints
[dir
];
1090 DAPM_UPDATE_STAT(widget
, path_checks
);
1092 /* do we need to add this widget to the list ? */
1094 list_add_tail(&widget
->work_list
, list
);
1096 if (custom_stop_condition
&& custom_stop_condition(widget
, dir
)) {
1097 widget
->endpoints
[dir
] = 1;
1098 return widget
->endpoints
[dir
];
1101 if ((widget
->is_ep
& SND_SOC_DAPM_DIR_TO_EP(dir
)) && widget
->connected
) {
1102 widget
->endpoints
[dir
] = snd_soc_dapm_suspend_check(widget
);
1103 return widget
->endpoints
[dir
];
1106 snd_soc_dapm_widget_for_each_path(widget
, rdir
, path
) {
1107 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
1109 if (path
->weak
|| path
->is_supply
)
1115 trace_snd_soc_dapm_path(widget
, dir
, path
);
1117 if (path
->connect
) {
1119 con
+= fn(path
->node
[dir
], list
, custom_stop_condition
);
1124 widget
->endpoints
[dir
] = con
;
1130 * Recursively check for a completed path to an active or physically connected
1131 * output widget. Returns number of complete paths.
1133 * Optionally, can be supplied with a function acting as a stopping condition.
1134 * This function takes the dapm widget currently being examined and the walk
1135 * direction as an arguments, it should return true if the walk should be
1136 * stopped and false otherwise.
1138 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
1139 struct list_head
*list
,
1140 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*i
,
1141 enum snd_soc_dapm_direction
))
1143 return is_connected_ep(widget
, list
, SND_SOC_DAPM_DIR_OUT
,
1144 is_connected_output_ep
, custom_stop_condition
);
1148 * Recursively check for a completed path to an active or physically connected
1149 * input widget. Returns number of complete paths.
1151 * Optionally, can be supplied with a function acting as a stopping condition.
1152 * This function takes the dapm widget currently being examined and the walk
1153 * direction as an arguments, it should return true if the walk should be
1154 * stopped and false otherwise.
1156 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
1157 struct list_head
*list
,
1158 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*i
,
1159 enum snd_soc_dapm_direction
))
1161 return is_connected_ep(widget
, list
, SND_SOC_DAPM_DIR_IN
,
1162 is_connected_input_ep
, custom_stop_condition
);
1166 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1167 * @dai: the soc DAI.
1168 * @stream: stream direction.
1169 * @list: list of active widgets for this stream.
1170 * @custom_stop_condition: (optional) a function meant to stop the widget graph
1171 * walk based on custom logic.
1173 * Queries DAPM graph as to whether an valid audio stream path exists for
1174 * the initial stream specified by name. This takes into account
1175 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1177 * Optionally, can be supplied with a function acting as a stopping condition.
1178 * This function takes the dapm widget currently being examined and the walk
1179 * direction as an arguments, it should return true if the walk should be
1180 * stopped and false otherwise.
1182 * Returns the number of valid paths or negative error.
1184 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
1185 struct snd_soc_dapm_widget_list
**list
,
1186 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1187 enum snd_soc_dapm_direction
))
1189 struct snd_soc_card
*card
= dai
->component
->card
;
1190 struct snd_soc_dapm_widget
*w
;
1195 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1198 * For is_connected_{output,input}_ep fully discover the graph we need
1199 * to reset the cached number of inputs and outputs.
1201 list_for_each_entry(w
, &card
->widgets
, list
) {
1202 w
->endpoints
[SND_SOC_DAPM_DIR_IN
] = -1;
1203 w
->endpoints
[SND_SOC_DAPM_DIR_OUT
] = -1;
1206 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1207 paths
= is_connected_output_ep(dai
->playback_widget
, &widgets
,
1208 custom_stop_condition
);
1210 paths
= is_connected_input_ep(dai
->capture_widget
, &widgets
,
1211 custom_stop_condition
);
1213 /* Drop starting point */
1214 list_del(widgets
.next
);
1216 ret
= dapm_widget_list_create(list
, &widgets
);
1220 trace_snd_soc_dapm_connected(paths
, stream
);
1221 mutex_unlock(&card
->dapm_mutex
);
1227 * Handler for regulator supply widget.
1229 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1230 struct snd_kcontrol
*kcontrol
, int event
)
1234 soc_dapm_async_complete(w
->dapm
);
1236 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1237 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1238 ret
= regulator_allow_bypass(w
->regulator
, false);
1240 dev_warn(w
->dapm
->dev
,
1241 "ASoC: Failed to unbypass %s: %d\n",
1245 return regulator_enable(w
->regulator
);
1247 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1248 ret
= regulator_allow_bypass(w
->regulator
, true);
1250 dev_warn(w
->dapm
->dev
,
1251 "ASoC: Failed to bypass %s: %d\n",
1255 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1258 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1261 * Handler for clock supply widget.
1263 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1264 struct snd_kcontrol
*kcontrol
, int event
)
1269 soc_dapm_async_complete(w
->dapm
);
1271 #ifdef CONFIG_HAVE_CLK
1272 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1273 return clk_prepare_enable(w
->clk
);
1275 clk_disable_unprepare(w
->clk
);
1281 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1283 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1285 if (w
->power_checked
)
1286 return w
->new_power
;
1291 w
->new_power
= w
->power_check(w
);
1293 w
->power_checked
= true;
1295 return w
->new_power
;
1298 /* Generic check to see if a widget should be powered.
1300 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1304 DAPM_UPDATE_STAT(w
, power_checks
);
1306 in
= is_connected_input_ep(w
, NULL
, NULL
);
1307 out
= is_connected_output_ep(w
, NULL
, NULL
);
1308 return out
!= 0 && in
!= 0;
1311 /* Check to see if a power supply is needed */
1312 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1314 struct snd_soc_dapm_path
*path
;
1316 DAPM_UPDATE_STAT(w
, power_checks
);
1318 /* Check if one of our outputs is connected */
1319 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
1320 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1325 if (path
->connected
&&
1326 !path
->connected(path
->source
, path
->sink
))
1329 if (dapm_widget_power_check(path
->sink
))
1336 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1338 return w
->connected
;
1341 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1342 struct snd_soc_dapm_widget
*b
,
1350 sort
= dapm_down_seq
;
1352 if (sort
[a
->id
] != sort
[b
->id
])
1353 return sort
[a
->id
] - sort
[b
->id
];
1354 if (a
->subseq
!= b
->subseq
) {
1356 return a
->subseq
- b
->subseq
;
1358 return b
->subseq
- a
->subseq
;
1360 if (a
->reg
!= b
->reg
)
1361 return a
->reg
- b
->reg
;
1362 if (a
->dapm
!= b
->dapm
)
1363 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1368 /* Insert a widget in order into a DAPM power sequence. */
1369 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1370 struct list_head
*list
,
1373 struct snd_soc_dapm_widget
*w
;
1375 list_for_each_entry(w
, list
, power_list
)
1376 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1377 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1381 list_add_tail(&new_widget
->power_list
, list
);
1384 static void dapm_seq_check_event(struct snd_soc_card
*card
,
1385 struct snd_soc_dapm_widget
*w
, int event
)
1387 const char *ev_name
;
1391 case SND_SOC_DAPM_PRE_PMU
:
1392 ev_name
= "PRE_PMU";
1395 case SND_SOC_DAPM_POST_PMU
:
1396 ev_name
= "POST_PMU";
1399 case SND_SOC_DAPM_PRE_PMD
:
1400 ev_name
= "PRE_PMD";
1403 case SND_SOC_DAPM_POST_PMD
:
1404 ev_name
= "POST_PMD";
1407 case SND_SOC_DAPM_WILL_PMU
:
1408 ev_name
= "WILL_PMU";
1411 case SND_SOC_DAPM_WILL_PMD
:
1412 ev_name
= "WILL_PMD";
1416 WARN(1, "Unknown event %d\n", event
);
1420 if (w
->new_power
!= power
)
1423 if (w
->event
&& (w
->event_flags
& event
)) {
1424 pop_dbg(w
->dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1426 soc_dapm_async_complete(w
->dapm
);
1427 trace_snd_soc_dapm_widget_event_start(w
, event
);
1428 ret
= w
->event(w
, NULL
, event
);
1429 trace_snd_soc_dapm_widget_event_done(w
, event
);
1431 dev_err(w
->dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1432 ev_name
, w
->name
, ret
);
1436 /* Apply the coalesced changes from a DAPM sequence */
1437 static void dapm_seq_run_coalesced(struct snd_soc_card
*card
,
1438 struct list_head
*pending
)
1440 struct snd_soc_dapm_context
*dapm
;
1441 struct snd_soc_dapm_widget
*w
;
1443 unsigned int value
= 0;
1444 unsigned int mask
= 0;
1446 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
, power_list
);
1450 list_for_each_entry(w
, pending
, power_list
) {
1451 WARN_ON(reg
!= w
->reg
|| dapm
!= w
->dapm
);
1452 w
->power
= w
->new_power
;
1454 mask
|= w
->mask
<< w
->shift
;
1456 value
|= w
->on_val
<< w
->shift
;
1458 value
|= w
->off_val
<< w
->shift
;
1460 pop_dbg(dapm
->dev
, card
->pop_time
,
1461 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1462 w
->name
, reg
, value
, mask
);
1464 /* Check for events */
1465 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMU
);
1466 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMD
);
1470 /* Any widget will do, they should all be updating the
1474 pop_dbg(dapm
->dev
, card
->pop_time
,
1475 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1476 value
, mask
, reg
, card
->pop_time
);
1477 pop_wait(card
->pop_time
);
1478 soc_dapm_update_bits(dapm
, reg
, mask
, value
);
1481 list_for_each_entry(w
, pending
, power_list
) {
1482 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMU
);
1483 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMD
);
1487 /* Apply a DAPM power sequence.
1489 * We walk over a pre-sorted list of widgets to apply power to. In
1490 * order to minimise the number of writes to the device required
1491 * multiple widgets will be updated in a single write where possible.
1492 * Currently anything that requires more than a single write is not
1495 static void dapm_seq_run(struct snd_soc_card
*card
,
1496 struct list_head
*list
, int event
, bool power_up
)
1498 struct snd_soc_dapm_widget
*w
, *n
;
1499 struct snd_soc_dapm_context
*d
;
1502 int cur_subseq
= -1;
1503 int cur_reg
= SND_SOC_NOPM
;
1504 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1511 sort
= dapm_down_seq
;
1513 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1516 /* Do we need to apply any queued changes? */
1517 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1518 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1519 if (!list_empty(&pending
))
1520 dapm_seq_run_coalesced(card
, &pending
);
1522 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1523 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1524 if (sort
[i
] == cur_sort
)
1525 cur_dapm
->seq_notifier(cur_dapm
,
1530 if (cur_dapm
&& w
->dapm
!= cur_dapm
)
1531 soc_dapm_async_complete(cur_dapm
);
1533 INIT_LIST_HEAD(&pending
);
1535 cur_subseq
= INT_MIN
;
1536 cur_reg
= SND_SOC_NOPM
;
1541 case snd_soc_dapm_pre
:
1543 list_for_each_entry_safe_continue(w
, n
, list
,
1546 if (event
== SND_SOC_DAPM_STREAM_START
)
1548 NULL
, SND_SOC_DAPM_PRE_PMU
);
1549 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1551 NULL
, SND_SOC_DAPM_PRE_PMD
);
1554 case snd_soc_dapm_post
:
1556 list_for_each_entry_safe_continue(w
, n
, list
,
1559 if (event
== SND_SOC_DAPM_STREAM_START
)
1561 NULL
, SND_SOC_DAPM_POST_PMU
);
1562 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1564 NULL
, SND_SOC_DAPM_POST_PMD
);
1568 /* Queue it up for application */
1569 cur_sort
= sort
[w
->id
];
1570 cur_subseq
= w
->subseq
;
1573 list_move(&w
->power_list
, &pending
);
1578 dev_err(w
->dapm
->dev
,
1579 "ASoC: Failed to apply widget power: %d\n", ret
);
1582 if (!list_empty(&pending
))
1583 dapm_seq_run_coalesced(card
, &pending
);
1585 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1586 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1587 if (sort
[i
] == cur_sort
)
1588 cur_dapm
->seq_notifier(cur_dapm
,
1592 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1593 soc_dapm_async_complete(d
);
1597 static void dapm_widget_update(struct snd_soc_card
*card
)
1599 struct snd_soc_dapm_update
*update
= card
->update
;
1600 struct snd_soc_dapm_widget_list
*wlist
;
1601 struct snd_soc_dapm_widget
*w
= NULL
;
1605 if (!update
|| !dapm_kcontrol_is_powered(update
->kcontrol
))
1608 wlist
= dapm_kcontrol_get_wlist(update
->kcontrol
);
1610 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1611 w
= wlist
->widgets
[wi
];
1613 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1614 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1616 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1624 ret
= soc_dapm_update_bits(w
->dapm
, update
->reg
, update
->mask
,
1627 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1630 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1631 w
= wlist
->widgets
[wi
];
1633 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1634 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1636 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1642 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1643 * they're changing state.
1645 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1647 struct snd_soc_dapm_context
*d
= data
;
1650 /* If we're off and we're not supposed to be go into STANDBY */
1651 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1652 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1654 pm_runtime_get_sync(d
->dev
);
1656 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1659 "ASoC: Failed to turn on bias: %d\n", ret
);
1662 /* Prepare for a transition to ON or away from ON */
1663 if ((d
->target_bias_level
== SND_SOC_BIAS_ON
&&
1664 d
->bias_level
!= SND_SOC_BIAS_ON
) ||
1665 (d
->target_bias_level
!= SND_SOC_BIAS_ON
&&
1666 d
->bias_level
== SND_SOC_BIAS_ON
)) {
1667 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1670 "ASoC: Failed to prepare bias: %d\n", ret
);
1674 /* Async callback run prior to DAPM sequences - brings to their final
1677 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1679 struct snd_soc_dapm_context
*d
= data
;
1682 /* If we just powered the last thing off drop to standby bias */
1683 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1684 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1685 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1686 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1688 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1692 /* If we're in standby and can support bias off then do that */
1693 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1694 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1695 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1697 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1701 pm_runtime_put(d
->dev
);
1704 /* If we just powered up then move to active bias */
1705 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1706 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1707 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1709 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1714 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1715 bool power
, bool connect
)
1717 /* If a connection is being made or broken then that update
1718 * will have marked the peer dirty, otherwise the widgets are
1719 * not connected and this update has no impact. */
1723 /* If the peer is already in the state we're moving to then we
1724 * won't have an impact on it. */
1725 if (power
!= peer
->power
)
1726 dapm_mark_dirty(peer
, "peer state change");
1729 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1730 struct list_head
*up_list
,
1731 struct list_head
*down_list
)
1733 struct snd_soc_dapm_path
*path
;
1735 if (w
->power
== power
)
1738 trace_snd_soc_dapm_widget_power(w
, power
);
1740 /* If we changed our power state perhaps our neigbours changed
1743 snd_soc_dapm_widget_for_each_source_path(w
, path
)
1744 dapm_widget_set_peer_power(path
->source
, power
, path
->connect
);
1746 /* Supplies can't affect their outputs, only their inputs */
1747 if (!w
->is_supply
) {
1748 snd_soc_dapm_widget_for_each_sink_path(w
, path
)
1749 dapm_widget_set_peer_power(path
->sink
, power
,
1754 dapm_seq_insert(w
, up_list
, true);
1756 dapm_seq_insert(w
, down_list
, false);
1759 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1760 struct list_head
*up_list
,
1761 struct list_head
*down_list
)
1766 case snd_soc_dapm_pre
:
1767 dapm_seq_insert(w
, down_list
, false);
1769 case snd_soc_dapm_post
:
1770 dapm_seq_insert(w
, up_list
, true);
1774 power
= dapm_widget_power_check(w
);
1776 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1781 static bool dapm_idle_bias_off(struct snd_soc_dapm_context
*dapm
)
1783 if (dapm
->idle_bias_off
)
1786 switch (snd_power_get_state(dapm
->card
->snd_card
)) {
1787 case SNDRV_CTL_POWER_D3hot
:
1788 case SNDRV_CTL_POWER_D3cold
:
1789 return dapm
->suspend_bias_off
;
1798 * Scan each dapm widget for complete audio path.
1799 * A complete path is a route that has valid endpoints i.e.:-
1801 * o DAC to output pin.
1802 * o Input Pin to ADC.
1803 * o Input pin to Output pin (bypass, sidetone)
1804 * o DAC to ADC (loopback).
1806 static int dapm_power_widgets(struct snd_soc_card
*card
, int event
)
1808 struct snd_soc_dapm_widget
*w
;
1809 struct snd_soc_dapm_context
*d
;
1811 LIST_HEAD(down_list
);
1812 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1813 enum snd_soc_bias_level bias
;
1815 lockdep_assert_held(&card
->dapm_mutex
);
1817 trace_snd_soc_dapm_start(card
);
1819 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1820 if (dapm_idle_bias_off(d
))
1821 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1823 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1828 /* Check which widgets we need to power and store them in
1829 * lists indicating if they should be powered up or down. We
1830 * only check widgets that have been flagged as dirty but note
1831 * that new widgets may be added to the dirty list while we
1834 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1835 dapm_power_one_widget(w
, &up_list
, &down_list
);
1838 list_for_each_entry(w
, &card
->widgets
, list
) {
1840 case snd_soc_dapm_pre
:
1841 case snd_soc_dapm_post
:
1842 /* These widgets always need to be powered */
1845 list_del_init(&w
->dirty
);
1852 /* Supplies and micbiases only bring the
1853 * context up to STANDBY as unless something
1854 * else is active and passing audio they
1855 * generally don't require full power. Signal
1856 * generators are virtual pins and have no
1857 * power impact themselves.
1860 case snd_soc_dapm_siggen
:
1861 case snd_soc_dapm_vmid
:
1863 case snd_soc_dapm_supply
:
1864 case snd_soc_dapm_regulator_supply
:
1865 case snd_soc_dapm_clock_supply
:
1866 case snd_soc_dapm_micbias
:
1867 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1868 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1871 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1878 /* Force all contexts in the card to the same bias state if
1879 * they're not ground referenced.
1881 bias
= SND_SOC_BIAS_OFF
;
1882 list_for_each_entry(d
, &card
->dapm_list
, list
)
1883 if (d
->target_bias_level
> bias
)
1884 bias
= d
->target_bias_level
;
1885 list_for_each_entry(d
, &card
->dapm_list
, list
)
1886 if (!dapm_idle_bias_off(d
))
1887 d
->target_bias_level
= bias
;
1889 trace_snd_soc_dapm_walk_done(card
);
1891 /* Run card bias changes at first */
1892 dapm_pre_sequence_async(&card
->dapm
, 0);
1893 /* Run other bias changes in parallel */
1894 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1895 if (d
!= &card
->dapm
)
1896 async_schedule_domain(dapm_pre_sequence_async
, d
,
1899 async_synchronize_full_domain(&async_domain
);
1901 list_for_each_entry(w
, &down_list
, power_list
) {
1902 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMD
);
1905 list_for_each_entry(w
, &up_list
, power_list
) {
1906 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMU
);
1909 /* Power down widgets first; try to avoid amplifying pops. */
1910 dapm_seq_run(card
, &down_list
, event
, false);
1912 dapm_widget_update(card
);
1915 dapm_seq_run(card
, &up_list
, event
, true);
1917 /* Run all the bias changes in parallel */
1918 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1919 if (d
!= &card
->dapm
)
1920 async_schedule_domain(dapm_post_sequence_async
, d
,
1923 async_synchronize_full_domain(&async_domain
);
1924 /* Run card bias changes at last */
1925 dapm_post_sequence_async(&card
->dapm
, 0);
1927 /* do we need to notify any clients that DAPM event is complete */
1928 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1929 if (d
->stream_event
)
1930 d
->stream_event(d
, event
);
1933 pop_dbg(card
->dev
, card
->pop_time
,
1934 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1935 pop_wait(card
->pop_time
);
1937 trace_snd_soc_dapm_done(card
);
1942 #ifdef CONFIG_DEBUG_FS
1943 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1944 char __user
*user_buf
,
1945 size_t count
, loff_t
*ppos
)
1947 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1948 struct snd_soc_card
*card
= w
->dapm
->card
;
1949 enum snd_soc_dapm_direction dir
, rdir
;
1953 struct snd_soc_dapm_path
*p
= NULL
;
1955 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1959 mutex_lock(&card
->dapm_mutex
);
1961 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
1966 in
= is_connected_input_ep(w
, NULL
, NULL
);
1967 out
= is_connected_output_ep(w
, NULL
, NULL
);
1970 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1971 w
->name
, w
->power
? "On" : "Off",
1972 w
->force
? " (forced)" : "", in
, out
);
1975 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1976 " - R%d(0x%x) mask 0x%x",
1977 w
->reg
, w
->reg
, w
->mask
<< w
->shift
);
1979 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1982 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1984 w
->active
? "active" : "inactive");
1986 snd_soc_dapm_for_each_direction(dir
) {
1987 rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
1988 snd_soc_dapm_widget_for_each_path(w
, dir
, p
) {
1989 if (p
->connected
&& !p
->connected(w
, p
->node
[rdir
]))
1995 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1996 " %s \"%s\" \"%s\"\n",
1997 (rdir
== SND_SOC_DAPM_DIR_IN
) ? "in" : "out",
1998 p
->name
? p
->name
: "static",
1999 p
->node
[rdir
]->name
);
2003 mutex_unlock(&card
->dapm_mutex
);
2005 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
2011 static const struct file_operations dapm_widget_power_fops
= {
2012 .open
= simple_open
,
2013 .read
= dapm_widget_power_read_file
,
2014 .llseek
= default_llseek
,
2017 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
2018 size_t count
, loff_t
*ppos
)
2020 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
2023 switch (dapm
->bias_level
) {
2024 case SND_SOC_BIAS_ON
:
2027 case SND_SOC_BIAS_PREPARE
:
2028 level
= "Prepare\n";
2030 case SND_SOC_BIAS_STANDBY
:
2031 level
= "Standby\n";
2033 case SND_SOC_BIAS_OFF
:
2037 WARN(1, "Unknown bias_level %d\n", dapm
->bias_level
);
2038 level
= "Unknown\n";
2042 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
2046 static const struct file_operations dapm_bias_fops
= {
2047 .open
= simple_open
,
2048 .read
= dapm_bias_read_file
,
2049 .llseek
= default_llseek
,
2052 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2053 struct dentry
*parent
)
2060 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
2062 if (!dapm
->debugfs_dapm
) {
2064 "ASoC: Failed to create DAPM debugfs directory\n");
2068 d
= debugfs_create_file("bias_level", 0444,
2069 dapm
->debugfs_dapm
, dapm
,
2073 "ASoC: Failed to create bias level debugfs file\n");
2076 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2078 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
2081 if (!dapm
->debugfs_dapm
|| !w
->name
)
2084 d
= debugfs_create_file(w
->name
, 0444,
2085 dapm
->debugfs_dapm
, w
,
2086 &dapm_widget_power_fops
);
2088 dev_warn(w
->dapm
->dev
,
2089 "ASoC: Failed to create %s debugfs file\n",
2093 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2095 debugfs_remove_recursive(dapm
->debugfs_dapm
);
2099 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2100 struct dentry
*parent
)
2104 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2108 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2115 * soc_dapm_connect_path() - Connects or disconnects a path
2116 * @path: The path to update
2117 * @connect: The new connect state of the path. True if the path is connected,
2118 * false if it is disconneted.
2119 * @reason: The reason why the path changed (for debugging only)
2121 static void soc_dapm_connect_path(struct snd_soc_dapm_path
*path
,
2122 bool connect
, const char *reason
)
2124 if (path
->connect
== connect
)
2127 path
->connect
= connect
;
2128 dapm_mark_dirty(path
->source
, reason
);
2129 dapm_mark_dirty(path
->sink
, reason
);
2130 dapm_path_invalidate(path
);
2133 /* test and update the power status of a mux widget */
2134 static int soc_dapm_mux_update_power(struct snd_soc_card
*card
,
2135 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
2137 struct snd_soc_dapm_path
*path
;
2141 lockdep_assert_held(&card
->dapm_mutex
);
2143 /* find dapm widget path assoc with kcontrol */
2144 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2146 /* we now need to match the string in the enum to the path */
2147 if (!(strcmp(path
->name
, e
->texts
[mux
])))
2152 soc_dapm_connect_path(path
, connect
, "mux update");
2156 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2161 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context
*dapm
,
2162 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
,
2163 struct snd_soc_dapm_update
*update
)
2165 struct snd_soc_card
*card
= dapm
->card
;
2168 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2169 card
->update
= update
;
2170 ret
= soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
2171 card
->update
= NULL
;
2172 mutex_unlock(&card
->dapm_mutex
);
2174 soc_dpcm_runtime_update(card
);
2177 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
2179 /* test and update the power status of a mixer or switch widget */
2180 static int soc_dapm_mixer_update_power(struct snd_soc_card
*card
,
2181 struct snd_kcontrol
*kcontrol
, int connect
)
2183 struct snd_soc_dapm_path
*path
;
2186 lockdep_assert_held(&card
->dapm_mutex
);
2188 /* find dapm widget path assoc with kcontrol */
2189 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2191 soc_dapm_connect_path(path
, connect
, "mixer update");
2195 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2200 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context
*dapm
,
2201 struct snd_kcontrol
*kcontrol
, int connect
,
2202 struct snd_soc_dapm_update
*update
)
2204 struct snd_soc_card
*card
= dapm
->card
;
2207 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2208 card
->update
= update
;
2209 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
2210 card
->update
= NULL
;
2211 mutex_unlock(&card
->dapm_mutex
);
2213 soc_dpcm_runtime_update(card
);
2216 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
2218 static ssize_t
dapm_widget_show_component(struct snd_soc_component
*cmpnt
,
2221 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(cmpnt
);
2222 struct snd_soc_dapm_widget
*w
;
2224 char *state
= "not set";
2226 /* card won't be set for the dummy component, as a spot fix
2227 * we're checking for that case specifically here but in future
2228 * we will ensure that the dummy component looks like others.
2233 list_for_each_entry(w
, &cmpnt
->card
->widgets
, list
) {
2234 if (w
->dapm
!= dapm
)
2237 /* only display widgets that burnm power */
2239 case snd_soc_dapm_hp
:
2240 case snd_soc_dapm_mic
:
2241 case snd_soc_dapm_spk
:
2242 case snd_soc_dapm_line
:
2243 case snd_soc_dapm_micbias
:
2244 case snd_soc_dapm_dac
:
2245 case snd_soc_dapm_adc
:
2246 case snd_soc_dapm_pga
:
2247 case snd_soc_dapm_out_drv
:
2248 case snd_soc_dapm_mixer
:
2249 case snd_soc_dapm_mixer_named_ctl
:
2250 case snd_soc_dapm_supply
:
2251 case snd_soc_dapm_regulator_supply
:
2252 case snd_soc_dapm_clock_supply
:
2254 count
+= sprintf(buf
+ count
, "%s: %s\n",
2255 w
->name
, w
->power
? "On":"Off");
2262 switch (snd_soc_dapm_get_bias_level(dapm
)) {
2263 case SND_SOC_BIAS_ON
:
2266 case SND_SOC_BIAS_PREPARE
:
2269 case SND_SOC_BIAS_STANDBY
:
2272 case SND_SOC_BIAS_OFF
:
2276 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2281 /* show dapm widget status in sys fs */
2282 static ssize_t
dapm_widget_show(struct device
*dev
,
2283 struct device_attribute
*attr
, char *buf
)
2285 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2288 mutex_lock(&rtd
->card
->dapm_mutex
);
2290 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2291 struct snd_soc_component
*cmpnt
= rtd
->codec_dais
[i
]->component
;
2293 count
+= dapm_widget_show_component(cmpnt
, buf
+ count
);
2296 mutex_unlock(&rtd
->card
->dapm_mutex
);
2301 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2303 struct attribute
*soc_dapm_dev_attrs
[] = {
2304 &dev_attr_dapm_widget
.attr
,
2308 static void dapm_free_path(struct snd_soc_dapm_path
*path
)
2310 list_del(&path
->list_node
[SND_SOC_DAPM_DIR_IN
]);
2311 list_del(&path
->list_node
[SND_SOC_DAPM_DIR_OUT
]);
2312 list_del(&path
->list_kcontrol
);
2313 list_del(&path
->list
);
2317 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget
*w
)
2319 struct snd_soc_dapm_path
*p
, *next_p
;
2320 enum snd_soc_dapm_direction dir
;
2324 * remove source and sink paths associated to this widget.
2325 * While removing the path, remove reference to it from both
2326 * source and sink widgets so that path is removed only once.
2328 snd_soc_dapm_for_each_direction(dir
) {
2329 snd_soc_dapm_widget_for_each_path_safe(w
, dir
, p
, next_p
)
2333 kfree(w
->kcontrols
);
2334 kfree_const(w
->name
);
2338 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context
*dapm
)
2340 dapm
->path_sink_cache
.widget
= NULL
;
2341 dapm
->path_source_cache
.widget
= NULL
;
2344 /* free all dapm widgets and resources */
2345 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2347 struct snd_soc_dapm_widget
*w
, *next_w
;
2349 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2350 if (w
->dapm
!= dapm
)
2352 snd_soc_dapm_free_widget(w
);
2354 snd_soc_dapm_reset_cache(dapm
);
2357 static struct snd_soc_dapm_widget
*dapm_find_widget(
2358 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2359 bool search_other_contexts
)
2361 struct snd_soc_dapm_widget
*w
;
2362 struct snd_soc_dapm_widget
*fallback
= NULL
;
2364 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2365 if (!strcmp(w
->name
, pin
)) {
2366 if (w
->dapm
== dapm
)
2373 if (search_other_contexts
)
2379 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2380 const char *pin
, int status
)
2382 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2384 dapm_assert_locked(dapm
);
2387 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2391 if (w
->connected
!= status
) {
2392 dapm_mark_dirty(w
, "pin configuration");
2393 dapm_widget_invalidate_input_paths(w
);
2394 dapm_widget_invalidate_output_paths(w
);
2397 w
->connected
= status
;
2405 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2406 * @dapm: DAPM context
2408 * Walks all dapm audio paths and powers widgets according to their
2409 * stream or path usage.
2411 * Requires external locking.
2413 * Returns 0 for success.
2415 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context
*dapm
)
2418 * Suppress early reports (eg, jacks syncing their state) to avoid
2419 * silly DAPM runs during card startup.
2421 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2424 return dapm_power_widgets(dapm
->card
, SND_SOC_DAPM_STREAM_NOP
);
2426 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked
);
2429 * snd_soc_dapm_sync - scan and power dapm paths
2430 * @dapm: DAPM context
2432 * Walks all dapm audio paths and powers widgets according to their
2433 * stream or path usage.
2435 * Returns 0 for success.
2437 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2441 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2442 ret
= snd_soc_dapm_sync_unlocked(dapm
);
2443 mutex_unlock(&dapm
->card
->dapm_mutex
);
2446 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2449 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2450 * @w: The widget for which to update the flags
2452 * Some widgets have a dynamic category which depends on which neighbors they
2453 * are connected to. This function update the category for these widgets.
2455 * This function must be called whenever a path is added or removed to a widget.
2457 static void dapm_update_widget_flags(struct snd_soc_dapm_widget
*w
)
2459 enum snd_soc_dapm_direction dir
;
2460 struct snd_soc_dapm_path
*p
;
2464 case snd_soc_dapm_input
:
2465 /* On a fully routed card a input is never a source */
2466 if (w
->dapm
->card
->fully_routed
)
2468 ep
= SND_SOC_DAPM_EP_SOURCE
;
2469 snd_soc_dapm_widget_for_each_source_path(w
, p
) {
2470 if (p
->source
->id
== snd_soc_dapm_micbias
||
2471 p
->source
->id
== snd_soc_dapm_mic
||
2472 p
->source
->id
== snd_soc_dapm_line
||
2473 p
->source
->id
== snd_soc_dapm_output
) {
2479 case snd_soc_dapm_output
:
2480 /* On a fully routed card a output is never a sink */
2481 if (w
->dapm
->card
->fully_routed
)
2483 ep
= SND_SOC_DAPM_EP_SINK
;
2484 snd_soc_dapm_widget_for_each_sink_path(w
, p
) {
2485 if (p
->sink
->id
== snd_soc_dapm_spk
||
2486 p
->sink
->id
== snd_soc_dapm_hp
||
2487 p
->sink
->id
== snd_soc_dapm_line
||
2488 p
->sink
->id
== snd_soc_dapm_input
) {
2494 case snd_soc_dapm_line
:
2496 snd_soc_dapm_for_each_direction(dir
) {
2497 if (!list_empty(&w
->edges
[dir
]))
2498 ep
|= SND_SOC_DAPM_DIR_TO_EP(dir
);
2508 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context
*dapm
,
2509 struct snd_soc_dapm_widget
*source
, struct snd_soc_dapm_widget
*sink
,
2510 const char *control
)
2512 bool dynamic_source
= false;
2513 bool dynamic_sink
= false;
2518 switch (source
->id
) {
2519 case snd_soc_dapm_demux
:
2520 dynamic_source
= true;
2527 case snd_soc_dapm_mux
:
2528 case snd_soc_dapm_switch
:
2529 case snd_soc_dapm_mixer
:
2530 case snd_soc_dapm_mixer_named_ctl
:
2531 dynamic_sink
= true;
2537 if (dynamic_source
&& dynamic_sink
) {
2539 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2540 source
->name
, control
, sink
->name
);
2542 } else if (!dynamic_source
&& !dynamic_sink
) {
2544 "Control not supported for path %s -> [%s] -> %s\n",
2545 source
->name
, control
, sink
->name
);
2552 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
2553 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
2554 const char *control
,
2555 int (*connected
)(struct snd_soc_dapm_widget
*source
,
2556 struct snd_soc_dapm_widget
*sink
))
2558 struct snd_soc_dapm_widget
*widgets
[2];
2559 enum snd_soc_dapm_direction dir
;
2560 struct snd_soc_dapm_path
*path
;
2563 if (wsink
->is_supply
&& !wsource
->is_supply
) {
2565 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2566 wsource
->name
, wsink
->name
);
2570 if (connected
&& !wsource
->is_supply
) {
2572 "connected() callback only supported for supply widgets (%s -> %s)\n",
2573 wsource
->name
, wsink
->name
);
2577 if (wsource
->is_supply
&& control
) {
2579 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2580 wsource
->name
, control
, wsink
->name
);
2584 ret
= snd_soc_dapm_check_dynamic_path(dapm
, wsource
, wsink
, control
);
2588 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2592 path
->node
[SND_SOC_DAPM_DIR_IN
] = wsource
;
2593 path
->node
[SND_SOC_DAPM_DIR_OUT
] = wsink
;
2594 widgets
[SND_SOC_DAPM_DIR_IN
] = wsource
;
2595 widgets
[SND_SOC_DAPM_DIR_OUT
] = wsink
;
2597 path
->connected
= connected
;
2598 INIT_LIST_HEAD(&path
->list
);
2599 INIT_LIST_HEAD(&path
->list_kcontrol
);
2601 if (wsource
->is_supply
|| wsink
->is_supply
)
2602 path
->is_supply
= 1;
2604 /* connect static paths */
2605 if (control
== NULL
) {
2608 switch (wsource
->id
) {
2609 case snd_soc_dapm_demux
:
2610 ret
= dapm_connect_mux(dapm
, path
, control
, wsource
);
2618 switch (wsink
->id
) {
2619 case snd_soc_dapm_mux
:
2620 ret
= dapm_connect_mux(dapm
, path
, control
, wsink
);
2624 case snd_soc_dapm_switch
:
2625 case snd_soc_dapm_mixer
:
2626 case snd_soc_dapm_mixer_named_ctl
:
2627 ret
= dapm_connect_mixer(dapm
, path
, control
);
2636 list_add(&path
->list
, &dapm
->card
->paths
);
2637 snd_soc_dapm_for_each_direction(dir
)
2638 list_add(&path
->list_node
[dir
], &widgets
[dir
]->edges
[dir
]);
2640 snd_soc_dapm_for_each_direction(dir
) {
2641 dapm_update_widget_flags(widgets
[dir
]);
2642 dapm_mark_dirty(widgets
[dir
], "Route added");
2645 if (dapm
->card
->instantiated
&& path
->connect
)
2646 dapm_path_invalidate(path
);
2654 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2655 const struct snd_soc_dapm_route
*route
)
2657 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2658 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2661 char prefixed_sink
[80];
2662 char prefixed_source
[80];
2666 prefix
= soc_dapm_prefix(dapm
);
2668 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2669 prefix
, route
->sink
);
2670 sink
= prefixed_sink
;
2671 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2672 prefix
, route
->source
);
2673 source
= prefixed_source
;
2676 source
= route
->source
;
2679 wsource
= dapm_wcache_lookup(&dapm
->path_source_cache
, source
);
2680 wsink
= dapm_wcache_lookup(&dapm
->path_sink_cache
, sink
);
2682 if (wsink
&& wsource
)
2686 * find src and dest widgets over all widgets but favor a widget from
2687 * current DAPM context
2689 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2690 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2692 if (w
->dapm
== dapm
) {
2699 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2701 if (w
->dapm
== dapm
) {
2708 /* use widget from another DAPM context if not found from this */
2714 if (wsource
== NULL
) {
2715 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2719 if (wsink
== NULL
) {
2720 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2726 dapm_wcache_update(&dapm
->path_sink_cache
, wsink
);
2727 dapm_wcache_update(&dapm
->path_source_cache
, wsource
);
2729 ret
= snd_soc_dapm_add_path(dapm
, wsource
, wsink
, route
->control
,
2736 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2737 source
, route
->control
, sink
);
2741 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2742 const struct snd_soc_dapm_route
*route
)
2744 struct snd_soc_dapm_widget
*wsource
, *wsink
;
2745 struct snd_soc_dapm_path
*path
, *p
;
2748 char prefixed_sink
[80];
2749 char prefixed_source
[80];
2752 if (route
->control
) {
2754 "ASoC: Removal of routes with controls not supported\n");
2758 prefix
= soc_dapm_prefix(dapm
);
2760 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2761 prefix
, route
->sink
);
2762 sink
= prefixed_sink
;
2763 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2764 prefix
, route
->source
);
2765 source
= prefixed_source
;
2768 source
= route
->source
;
2772 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2773 if (strcmp(p
->source
->name
, source
) != 0)
2775 if (strcmp(p
->sink
->name
, sink
) != 0)
2782 wsource
= path
->source
;
2785 dapm_mark_dirty(wsource
, "Route removed");
2786 dapm_mark_dirty(wsink
, "Route removed");
2788 dapm_path_invalidate(path
);
2790 dapm_free_path(path
);
2792 /* Update any path related flags */
2793 dapm_update_widget_flags(wsource
);
2794 dapm_update_widget_flags(wsink
);
2796 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
2804 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2805 * @dapm: DAPM context
2806 * @route: audio routes
2807 * @num: number of routes
2809 * Connects 2 dapm widgets together via a named audio path. The sink is
2810 * the widget receiving the audio signal, whilst the source is the sender
2811 * of the audio signal.
2813 * Returns 0 for success else error. On error all resources can be freed
2814 * with a call to snd_soc_card_free().
2816 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2817 const struct snd_soc_dapm_route
*route
, int num
)
2821 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2822 for (i
= 0; i
< num
; i
++) {
2823 r
= snd_soc_dapm_add_route(dapm
, route
);
2825 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
2827 route
->control
? route
->control
: "direct",
2833 mutex_unlock(&dapm
->card
->dapm_mutex
);
2837 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2840 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2841 * @dapm: DAPM context
2842 * @route: audio routes
2843 * @num: number of routes
2845 * Removes routes from the DAPM context.
2847 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2848 const struct snd_soc_dapm_route
*route
, int num
)
2852 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2853 for (i
= 0; i
< num
; i
++) {
2854 snd_soc_dapm_del_route(dapm
, route
);
2857 mutex_unlock(&dapm
->card
->dapm_mutex
);
2861 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2863 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2864 const struct snd_soc_dapm_route
*route
)
2866 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2869 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2872 struct snd_soc_dapm_path
*path
;
2876 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
2882 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
2887 if (route
->control
|| route
->connected
)
2888 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
2889 route
->source
, route
->sink
);
2891 snd_soc_dapm_widget_for_each_sink_path(source
, path
) {
2892 if (path
->sink
== sink
) {
2899 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
2900 route
->source
, route
->sink
);
2902 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
2903 count
, route
->source
, route
->sink
);
2909 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2910 * @dapm: DAPM context
2911 * @route: audio routes
2912 * @num: number of routes
2914 * Mark existing routes matching those specified in the passed array
2915 * as being weak, meaning that they are ignored for the purpose of
2916 * power decisions. The main intended use case is for sidetone paths
2917 * which couple audio between other independent paths if they are both
2918 * active in order to make the combination work better at the user
2919 * level but which aren't intended to be "used".
2921 * Note that CODEC drivers should not use this as sidetone type paths
2922 * can frequently also be used as bypass paths.
2924 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2925 const struct snd_soc_dapm_route
*route
, int num
)
2930 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2931 for (i
= 0; i
< num
; i
++) {
2932 err
= snd_soc_dapm_weak_route(dapm
, route
);
2937 mutex_unlock(&dapm
->card
->dapm_mutex
);
2941 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2944 * snd_soc_dapm_new_widgets - add new dapm widgets
2945 * @card: card to be checked for new dapm widgets
2947 * Checks the codec for any new dapm widgets and creates them if found.
2949 * Returns 0 for success.
2951 int snd_soc_dapm_new_widgets(struct snd_soc_card
*card
)
2953 struct snd_soc_dapm_widget
*w
;
2956 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2958 list_for_each_entry(w
, &card
->widgets
, list
)
2963 if (w
->num_kcontrols
) {
2964 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2965 sizeof(struct snd_kcontrol
*),
2967 if (!w
->kcontrols
) {
2968 mutex_unlock(&card
->dapm_mutex
);
2974 case snd_soc_dapm_switch
:
2975 case snd_soc_dapm_mixer
:
2976 case snd_soc_dapm_mixer_named_ctl
:
2979 case snd_soc_dapm_mux
:
2980 case snd_soc_dapm_demux
:
2983 case snd_soc_dapm_pga
:
2984 case snd_soc_dapm_out_drv
:
2987 case snd_soc_dapm_dai_link
:
2988 dapm_new_dai_link(w
);
2994 /* Read the initial power state from the device */
2996 soc_dapm_read(w
->dapm
, w
->reg
, &val
);
2997 val
= val
>> w
->shift
;
2999 if (val
== w
->on_val
)
3005 dapm_mark_dirty(w
, "new widget");
3006 dapm_debugfs_add_widget(w
);
3009 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
3010 mutex_unlock(&card
->dapm_mutex
);
3013 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
3016 * snd_soc_dapm_get_volsw - dapm mixer get callback
3017 * @kcontrol: mixer control
3018 * @ucontrol: control element information
3020 * Callback to get the value of a dapm mixer control.
3022 * Returns 0 for success.
3024 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
3025 struct snd_ctl_elem_value
*ucontrol
)
3027 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3028 struct snd_soc_card
*card
= dapm
->card
;
3029 struct soc_mixer_control
*mc
=
3030 (struct soc_mixer_control
*)kcontrol
->private_value
;
3032 unsigned int shift
= mc
->shift
;
3034 unsigned int mask
= (1 << fls(max
)) - 1;
3035 unsigned int invert
= mc
->invert
;
3039 if (snd_soc_volsw_is_stereo(mc
))
3041 "ASoC: Control '%s' is stereo, which is not supported\n",
3044 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3045 if (dapm_kcontrol_is_powered(kcontrol
) && reg
!= SND_SOC_NOPM
) {
3046 ret
= soc_dapm_read(dapm
, reg
, &val
);
3047 val
= (val
>> shift
) & mask
;
3049 val
= dapm_kcontrol_get_value(kcontrol
);
3051 mutex_unlock(&card
->dapm_mutex
);
3057 ucontrol
->value
.integer
.value
[0] = max
- val
;
3059 ucontrol
->value
.integer
.value
[0] = val
;
3063 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
3066 * snd_soc_dapm_put_volsw - dapm mixer set callback
3067 * @kcontrol: mixer control
3068 * @ucontrol: control element information
3070 * Callback to set the value of a dapm mixer control.
3072 * Returns 0 for success.
3074 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
3075 struct snd_ctl_elem_value
*ucontrol
)
3077 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3078 struct snd_soc_card
*card
= dapm
->card
;
3079 struct soc_mixer_control
*mc
=
3080 (struct soc_mixer_control
*)kcontrol
->private_value
;
3082 unsigned int shift
= mc
->shift
;
3084 unsigned int mask
= (1 << fls(max
)) - 1;
3085 unsigned int invert
= mc
->invert
;
3087 int connect
, change
, reg_change
= 0;
3088 struct snd_soc_dapm_update update
;
3091 if (snd_soc_volsw_is_stereo(mc
))
3093 "ASoC: Control '%s' is stereo, which is not supported\n",
3096 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
3102 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3104 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3106 if (reg
!= SND_SOC_NOPM
) {
3107 mask
= mask
<< shift
;
3110 reg_change
= soc_dapm_test_bits(dapm
, reg
, mask
, val
);
3113 if (change
|| reg_change
) {
3115 update
.kcontrol
= kcontrol
;
3119 card
->update
= &update
;
3121 change
|= reg_change
;
3123 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
3125 card
->update
= NULL
;
3128 mutex_unlock(&card
->dapm_mutex
);
3131 soc_dpcm_runtime_update(card
);
3135 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
3138 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3139 * @kcontrol: mixer control
3140 * @ucontrol: control element information
3142 * Callback to get the value of a dapm enumerated double mixer control.
3144 * Returns 0 for success.
3146 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
3147 struct snd_ctl_elem_value
*ucontrol
)
3149 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3150 struct snd_soc_card
*card
= dapm
->card
;
3151 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3152 unsigned int reg_val
, val
;
3154 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3155 if (e
->reg
!= SND_SOC_NOPM
&& dapm_kcontrol_is_powered(kcontrol
)) {
3156 int ret
= soc_dapm_read(dapm
, e
->reg
, ®_val
);
3158 mutex_unlock(&card
->dapm_mutex
);
3162 reg_val
= dapm_kcontrol_get_value(kcontrol
);
3164 mutex_unlock(&card
->dapm_mutex
);
3166 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
3167 ucontrol
->value
.enumerated
.item
[0] = snd_soc_enum_val_to_item(e
, val
);
3168 if (e
->shift_l
!= e
->shift_r
) {
3169 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
3170 val
= snd_soc_enum_val_to_item(e
, val
);
3171 ucontrol
->value
.enumerated
.item
[1] = val
;
3176 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
3179 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3180 * @kcontrol: mixer control
3181 * @ucontrol: control element information
3183 * Callback to set the value of a dapm enumerated double mixer control.
3185 * Returns 0 for success.
3187 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
3188 struct snd_ctl_elem_value
*ucontrol
)
3190 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3191 struct snd_soc_card
*card
= dapm
->card
;
3192 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3193 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
3194 unsigned int val
, change
, reg_change
= 0;
3196 struct snd_soc_dapm_update update
;
3199 if (item
[0] >= e
->items
)
3202 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
3203 mask
= e
->mask
<< e
->shift_l
;
3204 if (e
->shift_l
!= e
->shift_r
) {
3205 if (item
[1] > e
->items
)
3207 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_r
;
3208 mask
|= e
->mask
<< e
->shift_r
;
3211 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3213 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3215 if (e
->reg
!= SND_SOC_NOPM
)
3216 reg_change
= soc_dapm_test_bits(dapm
, e
->reg
, mask
, val
);
3218 if (change
|| reg_change
) {
3220 update
.kcontrol
= kcontrol
;
3221 update
.reg
= e
->reg
;
3224 card
->update
= &update
;
3226 change
|= reg_change
;
3228 ret
= soc_dapm_mux_update_power(card
, kcontrol
, item
[0], e
);
3230 card
->update
= NULL
;
3233 mutex_unlock(&card
->dapm_mutex
);
3236 soc_dpcm_runtime_update(card
);
3240 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
3243 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3245 * @kcontrol: mixer control
3246 * @uinfo: control element information
3248 * Callback to provide information about a pin switch control.
3250 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
3251 struct snd_ctl_elem_info
*uinfo
)
3253 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
3255 uinfo
->value
.integer
.min
= 0;
3256 uinfo
->value
.integer
.max
= 1;
3260 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
3263 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3265 * @kcontrol: mixer control
3268 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
3269 struct snd_ctl_elem_value
*ucontrol
)
3271 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3272 const char *pin
= (const char *)kcontrol
->private_value
;
3274 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3276 ucontrol
->value
.integer
.value
[0] =
3277 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
3279 mutex_unlock(&card
->dapm_mutex
);
3283 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
3286 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3288 * @kcontrol: mixer control
3291 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3292 struct snd_ctl_elem_value
*ucontrol
)
3294 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3295 const char *pin
= (const char *)kcontrol
->private_value
;
3297 if (ucontrol
->value
.integer
.value
[0])
3298 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3300 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3302 snd_soc_dapm_sync(&card
->dapm
);
3305 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3307 struct snd_soc_dapm_widget
*
3308 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3309 const struct snd_soc_dapm_widget
*widget
)
3311 struct snd_soc_dapm_widget
*w
;
3313 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3314 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3317 "ASoC: Failed to create DAPM control %s\n",
3320 mutex_unlock(&dapm
->card
->dapm_mutex
);
3323 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control
);
3325 struct snd_soc_dapm_widget
*
3326 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context
*dapm
,
3327 const struct snd_soc_dapm_widget
*widget
)
3329 enum snd_soc_dapm_direction dir
;
3330 struct snd_soc_dapm_widget
*w
;
3334 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3338 case snd_soc_dapm_regulator_supply
:
3339 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3340 if (IS_ERR(w
->regulator
)) {
3341 ret
= PTR_ERR(w
->regulator
);
3342 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3347 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3348 ret
= regulator_allow_bypass(w
->regulator
, true);
3350 dev_warn(w
->dapm
->dev
,
3351 "ASoC: Failed to bypass %s: %d\n",
3355 case snd_soc_dapm_clock_supply
:
3356 #ifdef CONFIG_CLKDEV_LOOKUP
3357 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3358 if (IS_ERR(w
->clk
)) {
3359 ret
= PTR_ERR(w
->clk
);
3360 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3372 prefix
= soc_dapm_prefix(dapm
);
3374 w
->name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, widget
->name
);
3376 w
->name
= kstrdup_const(widget
->name
, GFP_KERNEL
);
3377 if (w
->name
== NULL
) {
3383 case snd_soc_dapm_mic
:
3384 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3385 w
->power_check
= dapm_generic_check_power
;
3387 case snd_soc_dapm_input
:
3388 if (!dapm
->card
->fully_routed
)
3389 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3390 w
->power_check
= dapm_generic_check_power
;
3392 case snd_soc_dapm_spk
:
3393 case snd_soc_dapm_hp
:
3394 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3395 w
->power_check
= dapm_generic_check_power
;
3397 case snd_soc_dapm_output
:
3398 if (!dapm
->card
->fully_routed
)
3399 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3400 w
->power_check
= dapm_generic_check_power
;
3402 case snd_soc_dapm_vmid
:
3403 case snd_soc_dapm_siggen
:
3404 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3405 w
->power_check
= dapm_always_on_check_power
;
3407 case snd_soc_dapm_sink
:
3408 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3409 w
->power_check
= dapm_always_on_check_power
;
3412 case snd_soc_dapm_mux
:
3413 case snd_soc_dapm_demux
:
3414 case snd_soc_dapm_switch
:
3415 case snd_soc_dapm_mixer
:
3416 case snd_soc_dapm_mixer_named_ctl
:
3417 case snd_soc_dapm_adc
:
3418 case snd_soc_dapm_aif_out
:
3419 case snd_soc_dapm_dac
:
3420 case snd_soc_dapm_aif_in
:
3421 case snd_soc_dapm_pga
:
3422 case snd_soc_dapm_out_drv
:
3423 case snd_soc_dapm_micbias
:
3424 case snd_soc_dapm_line
:
3425 case snd_soc_dapm_dai_link
:
3426 case snd_soc_dapm_dai_out
:
3427 case snd_soc_dapm_dai_in
:
3428 w
->power_check
= dapm_generic_check_power
;
3430 case snd_soc_dapm_supply
:
3431 case snd_soc_dapm_regulator_supply
:
3432 case snd_soc_dapm_clock_supply
:
3433 case snd_soc_dapm_kcontrol
:
3435 w
->power_check
= dapm_supply_check_power
;
3438 w
->power_check
= dapm_always_on_check_power
;
3443 INIT_LIST_HEAD(&w
->list
);
3444 INIT_LIST_HEAD(&w
->dirty
);
3445 list_add_tail(&w
->list
, &dapm
->card
->widgets
);
3447 snd_soc_dapm_for_each_direction(dir
) {
3448 INIT_LIST_HEAD(&w
->edges
[dir
]);
3449 w
->endpoints
[dir
] = -1;
3452 /* machine layer set ups unconnected pins and insertions */
3458 * snd_soc_dapm_new_controls - create new dapm controls
3459 * @dapm: DAPM context
3460 * @widget: widget array
3461 * @num: number of widgets
3463 * Creates new DAPM controls based upon the templates.
3465 * Returns 0 for success else error.
3467 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3468 const struct snd_soc_dapm_widget
*widget
,
3471 struct snd_soc_dapm_widget
*w
;
3475 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3476 for (i
= 0; i
< num
; i
++) {
3477 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3480 "ASoC: Failed to create DAPM control %s\n",
3487 mutex_unlock(&dapm
->card
->dapm_mutex
);
3490 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3492 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3493 struct snd_kcontrol
*kcontrol
, int event
)
3495 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3496 struct snd_soc_dai
*source
, *sink
;
3497 const struct snd_soc_pcm_stream
*config
= w
->params
+ w
->params_select
;
3498 struct snd_pcm_substream substream
;
3499 struct snd_pcm_hw_params
*params
= NULL
;
3500 struct snd_pcm_runtime
*runtime
= NULL
;
3504 if (WARN_ON(!config
) ||
3505 WARN_ON(list_empty(&w
->edges
[SND_SOC_DAPM_DIR_OUT
]) ||
3506 list_empty(&w
->edges
[SND_SOC_DAPM_DIR_IN
])))
3509 /* We only support a single source and sink, pick the first */
3510 source_p
= list_first_entry(&w
->edges
[SND_SOC_DAPM_DIR_OUT
],
3511 struct snd_soc_dapm_path
,
3512 list_node
[SND_SOC_DAPM_DIR_OUT
]);
3513 sink_p
= list_first_entry(&w
->edges
[SND_SOC_DAPM_DIR_IN
],
3514 struct snd_soc_dapm_path
,
3515 list_node
[SND_SOC_DAPM_DIR_IN
]);
3517 source
= source_p
->source
->priv
;
3518 sink
= sink_p
->sink
->priv
;
3520 /* Be a little careful as we don't want to overflow the mask array */
3521 if (config
->formats
) {
3522 fmt
= ffs(config
->formats
) - 1;
3524 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3529 /* Currently very limited parameter selection */
3530 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3535 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3537 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3539 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3542 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3543 = config
->channels_min
;
3544 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3545 = config
->channels_max
;
3547 memset(&substream
, 0, sizeof(substream
));
3549 /* Allocate a dummy snd_pcm_runtime for startup() and other ops() */
3550 runtime
= kzalloc(sizeof(*runtime
), GFP_KERNEL
);
3555 substream
.runtime
= runtime
;
3558 case SND_SOC_DAPM_PRE_PMU
:
3559 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3560 if (source
->driver
->ops
&& source
->driver
->ops
->startup
) {
3561 ret
= source
->driver
->ops
->startup(&substream
, source
);
3563 dev_err(source
->dev
,
3564 "ASoC: startup() failed: %d\n", ret
);
3569 ret
= soc_dai_hw_params(&substream
, params
, source
);
3573 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3574 if (sink
->driver
->ops
&& sink
->driver
->ops
->startup
) {
3575 ret
= sink
->driver
->ops
->startup(&substream
, sink
);
3578 "ASoC: startup() failed: %d\n", ret
);
3583 ret
= soc_dai_hw_params(&substream
, params
, sink
);
3588 case SND_SOC_DAPM_POST_PMU
:
3589 ret
= snd_soc_dai_digital_mute(sink
, 0,
3590 SNDRV_PCM_STREAM_PLAYBACK
);
3591 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3592 dev_warn(sink
->dev
, "ASoC: Failed to unmute: %d\n", ret
);
3596 case SND_SOC_DAPM_PRE_PMD
:
3597 ret
= snd_soc_dai_digital_mute(sink
, 1,
3598 SNDRV_PCM_STREAM_PLAYBACK
);
3599 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3600 dev_warn(sink
->dev
, "ASoC: Failed to mute: %d\n", ret
);
3604 if (source
->driver
->ops
&& source
->driver
->ops
->shutdown
) {
3605 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3606 source
->driver
->ops
->shutdown(&substream
, source
);
3610 if (sink
->driver
->ops
&& sink
->driver
->ops
->shutdown
) {
3611 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3612 sink
->driver
->ops
->shutdown(&substream
, sink
);
3617 WARN(1, "Unknown event %d\n", event
);
3627 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol
*kcontrol
,
3628 struct snd_ctl_elem_value
*ucontrol
)
3630 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
3632 ucontrol
->value
.enumerated
.item
[0] = w
->params_select
;
3637 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol
*kcontrol
,
3638 struct snd_ctl_elem_value
*ucontrol
)
3640 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
3642 /* Can't change the config when widget is already powered */
3646 if (ucontrol
->value
.enumerated
.item
[0] == w
->params_select
)
3649 if (ucontrol
->value
.enumerated
.item
[0] >= w
->num_params
)
3652 w
->params_select
= ucontrol
->value
.enumerated
.item
[0];
3657 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3658 const struct snd_soc_pcm_stream
*params
,
3659 unsigned int num_params
,
3660 struct snd_soc_dapm_widget
*source
,
3661 struct snd_soc_dapm_widget
*sink
)
3663 struct snd_soc_dapm_widget
template;
3664 struct snd_soc_dapm_widget
*w
;
3667 unsigned long private_value
;
3668 const char **w_param_text
;
3669 struct soc_enum w_param_enum
[] = {
3670 SOC_ENUM_SINGLE(0, 0, 0, NULL
),
3672 struct snd_kcontrol_new kcontrol_dai_link
[] = {
3673 SOC_ENUM_EXT(NULL
, w_param_enum
[0],
3674 snd_soc_dapm_dai_link_get
,
3675 snd_soc_dapm_dai_link_put
),
3677 const struct snd_soc_pcm_stream
*config
= params
;
3679 w_param_text
= devm_kcalloc(card
->dev
, num_params
,
3680 sizeof(char *), GFP_KERNEL
);
3684 link_name
= devm_kasprintf(card
->dev
, GFP_KERNEL
, "%s-%s",
3685 source
->name
, sink
->name
);
3688 goto outfree_w_param
;
3691 for (count
= 0 ; count
< num_params
; count
++) {
3692 if (!config
->stream_name
) {
3693 dev_warn(card
->dapm
.dev
,
3694 "ASoC: anonymous config %d for dai link %s\n",
3696 w_param_text
[count
] =
3697 devm_kasprintf(card
->dev
, GFP_KERNEL
,
3698 "Anonymous Configuration %d",
3700 if (!w_param_text
[count
]) {
3702 goto outfree_link_name
;
3705 w_param_text
[count
] = devm_kmemdup(card
->dev
,
3706 config
->stream_name
,
3707 strlen(config
->stream_name
) + 1,
3709 if (!w_param_text
[count
]) {
3711 goto outfree_link_name
;
3716 w_param_enum
[0].items
= num_params
;
3717 w_param_enum
[0].texts
= w_param_text
;
3719 memset(&template, 0, sizeof(template));
3720 template.reg
= SND_SOC_NOPM
;
3721 template.id
= snd_soc_dapm_dai_link
;
3722 template.name
= link_name
;
3723 template.event
= snd_soc_dai_link_event
;
3724 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3725 SND_SOC_DAPM_PRE_PMD
;
3726 template.num_kcontrols
= 1;
3727 /* duplicate w_param_enum on heap so that memory persists */
3729 (unsigned long) devm_kmemdup(card
->dev
,
3730 (void *)(kcontrol_dai_link
[0].private_value
),
3731 sizeof(struct soc_enum
), GFP_KERNEL
);
3732 if (!private_value
) {
3733 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
3736 goto outfree_link_name
;
3738 kcontrol_dai_link
[0].private_value
= private_value
;
3739 /* duplicate kcontrol_dai_link on heap so that memory persists */
3740 template.kcontrol_news
=
3741 devm_kmemdup(card
->dev
, &kcontrol_dai_link
[0],
3742 sizeof(struct snd_kcontrol_new
),
3744 if (!template.kcontrol_news
) {
3745 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
3748 goto outfree_private_value
;
3751 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
3753 w
= snd_soc_dapm_new_control_unlocked(&card
->dapm
, &template);
3755 dev_err(card
->dev
, "ASoC: Failed to create %s widget\n",
3758 goto outfree_kcontrol_news
;
3762 w
->num_params
= num_params
;
3764 ret
= snd_soc_dapm_add_path(&card
->dapm
, source
, w
, NULL
, NULL
);
3767 return snd_soc_dapm_add_path(&card
->dapm
, w
, sink
, NULL
, NULL
);
3770 devm_kfree(card
->dev
, w
);
3771 outfree_kcontrol_news
:
3772 devm_kfree(card
->dev
, (void *)template.kcontrol_news
);
3773 outfree_private_value
:
3774 devm_kfree(card
->dev
, (void *)private_value
);
3776 devm_kfree(card
->dev
, link_name
);
3778 for (count
= 0 ; count
< num_params
; count
++)
3779 devm_kfree(card
->dev
, (void *)w_param_text
[count
]);
3780 devm_kfree(card
->dev
, w_param_text
);
3785 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3786 struct snd_soc_dai
*dai
)
3788 struct snd_soc_dapm_widget
template;
3789 struct snd_soc_dapm_widget
*w
;
3791 WARN_ON(dapm
->dev
!= dai
->dev
);
3793 memset(&template, 0, sizeof(template));
3794 template.reg
= SND_SOC_NOPM
;
3796 if (dai
->driver
->playback
.stream_name
) {
3797 template.id
= snd_soc_dapm_dai_in
;
3798 template.name
= dai
->driver
->playback
.stream_name
;
3799 template.sname
= dai
->driver
->playback
.stream_name
;
3801 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3804 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
3806 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3807 dai
->driver
->playback
.stream_name
);
3812 dai
->playback_widget
= w
;
3815 if (dai
->driver
->capture
.stream_name
) {
3816 template.id
= snd_soc_dapm_dai_out
;
3817 template.name
= dai
->driver
->capture
.stream_name
;
3818 template.sname
= dai
->driver
->capture
.stream_name
;
3820 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3823 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
3825 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3826 dai
->driver
->capture
.stream_name
);
3831 dai
->capture_widget
= w
;
3837 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3839 struct snd_soc_dapm_widget
*dai_w
, *w
;
3840 struct snd_soc_dapm_widget
*src
, *sink
;
3841 struct snd_soc_dai
*dai
;
3843 /* For each DAI widget... */
3844 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3845 switch (dai_w
->id
) {
3846 case snd_soc_dapm_dai_in
:
3847 case snd_soc_dapm_dai_out
:
3855 /* ...find all widgets with the same stream and link them */
3856 list_for_each_entry(w
, &card
->widgets
, list
) {
3857 if (w
->dapm
!= dai_w
->dapm
)
3861 case snd_soc_dapm_dai_in
:
3862 case snd_soc_dapm_dai_out
:
3868 if (!w
->sname
|| !strstr(w
->sname
, dai_w
->sname
))
3871 if (dai_w
->id
== snd_soc_dapm_dai_in
) {
3878 dev_dbg(dai
->dev
, "%s -> %s\n", src
->name
, sink
->name
);
3879 snd_soc_dapm_add_path(w
->dapm
, src
, sink
, NULL
, NULL
);
3886 static void dapm_connect_dai_link_widgets(struct snd_soc_card
*card
,
3887 struct snd_soc_pcm_runtime
*rtd
)
3889 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3890 struct snd_soc_dapm_widget
*sink
, *source
;
3893 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
3894 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
3896 /* connect BE DAI playback if widgets are valid */
3897 if (codec_dai
->playback_widget
&& cpu_dai
->playback_widget
) {
3898 source
= cpu_dai
->playback_widget
;
3899 sink
= codec_dai
->playback_widget
;
3900 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3901 cpu_dai
->component
->name
, source
->name
,
3902 codec_dai
->component
->name
, sink
->name
);
3904 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3908 /* connect BE DAI capture if widgets are valid */
3909 if (codec_dai
->capture_widget
&& cpu_dai
->capture_widget
) {
3910 source
= codec_dai
->capture_widget
;
3911 sink
= cpu_dai
->capture_widget
;
3912 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3913 codec_dai
->component
->name
, source
->name
,
3914 cpu_dai
->component
->name
, sink
->name
);
3916 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3922 static void soc_dapm_dai_stream_event(struct snd_soc_dai
*dai
, int stream
,
3925 struct snd_soc_dapm_widget
*w
;
3928 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
3929 w
= dai
->playback_widget
;
3931 w
= dai
->capture_widget
;
3934 dapm_mark_dirty(w
, "stream event");
3936 if (w
->id
== snd_soc_dapm_dai_in
) {
3937 ep
= SND_SOC_DAPM_EP_SOURCE
;
3938 dapm_widget_invalidate_input_paths(w
);
3940 ep
= SND_SOC_DAPM_EP_SINK
;
3941 dapm_widget_invalidate_output_paths(w
);
3945 case SND_SOC_DAPM_STREAM_START
:
3949 case SND_SOC_DAPM_STREAM_STOP
:
3953 case SND_SOC_DAPM_STREAM_SUSPEND
:
3954 case SND_SOC_DAPM_STREAM_RESUME
:
3955 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3956 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3962 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card
*card
)
3964 struct snd_soc_pcm_runtime
*rtd
;
3966 /* for each BE DAI link... */
3967 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
3969 * dynamic FE links have no fixed DAI mapping.
3970 * CODEC<->CODEC links have no direct connection.
3972 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->params
)
3975 dapm_connect_dai_link_widgets(card
, rtd
);
3979 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3984 soc_dapm_dai_stream_event(rtd
->cpu_dai
, stream
, event
);
3985 for (i
= 0; i
< rtd
->num_codecs
; i
++)
3986 soc_dapm_dai_stream_event(rtd
->codec_dais
[i
], stream
, event
);
3988 dapm_power_widgets(rtd
->card
, event
);
3992 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3993 * @rtd: PCM runtime data
3994 * @stream: stream name
3995 * @event: stream event
3997 * Sends a stream event to the dapm core. The core then makes any
3998 * necessary widget power changes.
4000 * Returns 0 for success else error.
4002 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
4005 struct snd_soc_card
*card
= rtd
->card
;
4007 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4008 soc_dapm_stream_event(rtd
, stream
, event
);
4009 mutex_unlock(&card
->dapm_mutex
);
4013 * snd_soc_dapm_enable_pin_unlocked - enable pin.
4014 * @dapm: DAPM context
4017 * Enables input/output pin and its parents or children widgets iff there is
4018 * a valid audio route and active audio stream.
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_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4028 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
4030 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked
);
4033 * snd_soc_dapm_enable_pin - enable pin.
4034 * @dapm: DAPM context
4037 * Enables input/output pin and its parents or children widgets iff there is
4038 * a valid audio route and active audio stream.
4040 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4041 * do any widget power switching.
4043 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
4047 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4049 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 1);
4051 mutex_unlock(&dapm
->card
->dapm_mutex
);
4055 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
4058 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
4059 * @dapm: DAPM context
4062 * Enables input/output pin regardless of any other state. This is
4063 * intended for use with microphone bias supplies used in microphone
4066 * Requires external locking.
4068 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4069 * do any widget power switching.
4071 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4074 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
4077 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4081 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
4082 if (!w
->connected
) {
4084 * w->force does not affect the number of input or output paths,
4085 * so we only have to recheck if w->connected is changed
4087 dapm_widget_invalidate_input_paths(w
);
4088 dapm_widget_invalidate_output_paths(w
);
4092 dapm_mark_dirty(w
, "force enable");
4096 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked
);
4099 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4100 * @dapm: DAPM context
4103 * Enables input/output pin regardless of any other state. This is
4104 * intended for use with microphone bias supplies used in microphone
4107 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4108 * do any widget power switching.
4110 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
4115 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4117 ret
= snd_soc_dapm_force_enable_pin_unlocked(dapm
, pin
);
4119 mutex_unlock(&dapm
->card
->dapm_mutex
);
4123 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
4126 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4127 * @dapm: DAPM context
4130 * Disables input/output pin and its parents or children widgets.
4132 * Requires external locking.
4134 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4135 * do any widget power switching.
4137 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4140 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4142 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked
);
4145 * snd_soc_dapm_disable_pin - disable pin.
4146 * @dapm: DAPM context
4149 * Disables input/output pin and its parents or children widgets.
4151 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4152 * do any widget power switching.
4154 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
4159 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4161 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4163 mutex_unlock(&dapm
->card
->dapm_mutex
);
4167 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
4170 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4171 * @dapm: DAPM context
4174 * Marks the specified pin as being not connected, disabling it along
4175 * any parent or child widgets. At present this is identical to
4176 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4177 * additional things such as disabling controls which only affect
4178 * paths through the pin.
4180 * Requires external locking.
4182 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4183 * do any widget power switching.
4185 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4188 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4190 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked
);
4193 * snd_soc_dapm_nc_pin - permanently disable pin.
4194 * @dapm: DAPM context
4197 * Marks the specified pin as being not connected, disabling it along
4198 * any parent or child widgets. At present this is identical to
4199 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4200 * additional things such as disabling controls which only affect
4201 * paths through the pin.
4203 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4204 * do any widget power switching.
4206 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
4210 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4212 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4214 mutex_unlock(&dapm
->card
->dapm_mutex
);
4218 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
4221 * snd_soc_dapm_get_pin_status - get audio pin status
4222 * @dapm: DAPM context
4223 * @pin: audio signal pin endpoint (or start point)
4225 * Get audio pin status - connected or disconnected.
4227 * Returns 1 for connected otherwise 0.
4229 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
4232 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
4235 return w
->connected
;
4239 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
4242 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4243 * @dapm: DAPM context
4244 * @pin: audio signal pin endpoint (or start point)
4246 * Mark the given endpoint or pin as ignoring suspend. When the
4247 * system is disabled a path between two endpoints flagged as ignoring
4248 * suspend will not be disabled. The path must already be enabled via
4249 * normal means at suspend time, it will not be turned on if it was not
4252 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
4255 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
4258 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4262 w
->ignore_suspend
= 1;
4266 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
4269 * snd_soc_dapm_free - free dapm resources
4270 * @dapm: DAPM context
4272 * Free all dapm widgets and resources.
4274 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
4276 dapm_debugfs_cleanup(dapm
);
4277 dapm_free_widgets(dapm
);
4278 list_del(&dapm
->list
);
4280 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
4282 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context
*dapm
)
4284 struct snd_soc_card
*card
= dapm
->card
;
4285 struct snd_soc_dapm_widget
*w
;
4286 LIST_HEAD(down_list
);
4289 mutex_lock(&card
->dapm_mutex
);
4291 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
4292 if (w
->dapm
!= dapm
)
4295 dapm_seq_insert(w
, &down_list
, false);
4301 /* If there were no widgets to power down we're already in
4305 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
4306 snd_soc_dapm_set_bias_level(dapm
,
4307 SND_SOC_BIAS_PREPARE
);
4308 dapm_seq_run(card
, &down_list
, 0, false);
4309 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
4310 snd_soc_dapm_set_bias_level(dapm
,
4311 SND_SOC_BIAS_STANDBY
);
4314 mutex_unlock(&card
->dapm_mutex
);
4318 * snd_soc_dapm_shutdown - callback for system shutdown
4320 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
4322 struct snd_soc_dapm_context
*dapm
;
4324 list_for_each_entry(dapm
, &card
->dapm_list
, list
) {
4325 if (dapm
!= &card
->dapm
) {
4326 soc_dapm_shutdown_dapm(dapm
);
4327 if (dapm
->bias_level
== SND_SOC_BIAS_STANDBY
)
4328 snd_soc_dapm_set_bias_level(dapm
,
4333 soc_dapm_shutdown_dapm(&card
->dapm
);
4334 if (card
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
4335 snd_soc_dapm_set_bias_level(&card
->dapm
,
4339 /* Module information */
4340 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4341 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4342 MODULE_LICENSE("GPL");