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 wname_in_long_name
= true;
827 kcname_in_long_name
= true;
829 case snd_soc_dapm_mixer_named_ctl
:
830 wname_in_long_name
= false;
831 kcname_in_long_name
= true;
833 case snd_soc_dapm_demux
:
834 case snd_soc_dapm_mux
:
835 wname_in_long_name
= true;
836 kcname_in_long_name
= false;
843 if (wname_in_long_name
&& kcname_in_long_name
) {
845 * The control will get a prefix from the control
846 * creation process but we're also using the same
847 * prefix for widgets so cut the prefix off the
848 * front of the widget name.
850 long_name
= kasprintf(GFP_KERNEL
, "%s %s",
851 w
->name
+ prefix_len
,
852 w
->kcontrol_news
[kci
].name
);
853 if (long_name
== NULL
)
857 } else if (wname_in_long_name
) {
859 name
= w
->name
+ prefix_len
;
862 name
= w
->kcontrol_news
[kci
].name
;
865 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[kci
], NULL
, name
,
872 kcontrol
->private_free
= dapm_kcontrol_free
;
874 ret
= dapm_kcontrol_data_alloc(w
, kcontrol
, name
);
876 snd_ctl_free_one(kcontrol
);
880 ret
= snd_ctl_add(card
, kcontrol
);
883 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
889 ret
= dapm_kcontrol_add_widget(kcontrol
, w
);
891 w
->kcontrols
[kci
] = kcontrol
;
899 /* create new dapm mixer control */
900 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
903 struct snd_soc_dapm_path
*path
;
904 struct dapm_kcontrol_data
*data
;
907 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
909 snd_soc_dapm_widget_for_each_source_path(w
, path
) {
910 /* mixer/mux paths name must match control name */
911 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
914 if (!w
->kcontrols
[i
]) {
915 ret
= dapm_create_or_share_kcontrol(w
, i
);
920 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
922 data
= snd_kcontrol_chip(w
->kcontrols
[i
]);
924 snd_soc_dapm_add_path(data
->widget
->dapm
,
934 /* create new dapm mux control */
935 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
937 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
938 enum snd_soc_dapm_direction dir
;
939 struct snd_soc_dapm_path
*path
;
944 case snd_soc_dapm_mux
:
945 dir
= SND_SOC_DAPM_DIR_OUT
;
948 case snd_soc_dapm_demux
:
949 dir
= SND_SOC_DAPM_DIR_IN
;
956 if (w
->num_kcontrols
!= 1) {
958 "ASoC: %s %s has incorrect number of controls\n", type
,
963 if (list_empty(&w
->edges
[dir
])) {
964 dev_err(dapm
->dev
, "ASoC: %s %s has no paths\n", type
, w
->name
);
968 ret
= dapm_create_or_share_kcontrol(w
, 0);
972 snd_soc_dapm_widget_for_each_path(w
, dir
, path
) {
974 dapm_kcontrol_add_path(w
->kcontrols
[0], path
);
980 /* create new dapm volume control */
981 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
985 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
986 ret
= dapm_create_or_share_kcontrol(w
, i
);
994 /* create new dapm dai link control */
995 static int dapm_new_dai_link(struct snd_soc_dapm_widget
*w
)
998 struct snd_kcontrol
*kcontrol
;
999 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1000 struct snd_card
*card
= dapm
->card
->snd_card
;
1002 /* create control for links with > 1 config */
1003 if (w
->num_params
<= 1)
1007 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
1008 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
], w
,
1010 ret
= snd_ctl_add(card
, kcontrol
);
1013 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1014 w
->name
, w
->kcontrol_news
[i
].name
, ret
);
1017 kcontrol
->private_data
= w
;
1018 w
->kcontrols
[i
] = kcontrol
;
1024 /* We implement power down on suspend by checking the power state of
1025 * the ALSA card - when we are suspending the ALSA state for the card
1028 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
1030 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
1033 case SNDRV_CTL_POWER_D3hot
:
1034 case SNDRV_CTL_POWER_D3cold
:
1035 if (widget
->ignore_suspend
)
1036 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
1038 return widget
->ignore_suspend
;
1044 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list
**list
,
1045 struct list_head
*widgets
)
1047 struct snd_soc_dapm_widget
*w
;
1048 struct list_head
*it
;
1049 unsigned int size
= 0;
1052 list_for_each(it
, widgets
)
1055 *list
= kzalloc(sizeof(**list
) + size
* sizeof(*w
), GFP_KERNEL
);
1059 list_for_each_entry(w
, widgets
, work_list
)
1060 (*list
)->widgets
[i
++] = w
;
1062 (*list
)->num_widgets
= i
;
1068 * Common implementation for is_connected_output_ep() and
1069 * is_connected_input_ep(). The function is inlined since the combined size of
1070 * the two specialized functions is only marginally larger then the size of the
1071 * generic function and at the same time the fast path of the specialized
1072 * functions is significantly smaller than the generic function.
1074 static __always_inline
int is_connected_ep(struct snd_soc_dapm_widget
*widget
,
1075 struct list_head
*list
, enum snd_soc_dapm_direction dir
,
1076 int (*fn
)(struct snd_soc_dapm_widget
*, struct list_head
*,
1077 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1078 enum snd_soc_dapm_direction
)),
1079 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1080 enum snd_soc_dapm_direction
))
1082 enum snd_soc_dapm_direction rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
1083 struct snd_soc_dapm_path
*path
;
1086 if (widget
->endpoints
[dir
] >= 0)
1087 return widget
->endpoints
[dir
];
1089 DAPM_UPDATE_STAT(widget
, path_checks
);
1091 /* do we need to add this widget to the list ? */
1093 list_add_tail(&widget
->work_list
, list
);
1095 if (custom_stop_condition
&& custom_stop_condition(widget
, dir
)) {
1096 widget
->endpoints
[dir
] = 1;
1097 return widget
->endpoints
[dir
];
1100 if ((widget
->is_ep
& SND_SOC_DAPM_DIR_TO_EP(dir
)) && widget
->connected
) {
1101 widget
->endpoints
[dir
] = snd_soc_dapm_suspend_check(widget
);
1102 return widget
->endpoints
[dir
];
1105 snd_soc_dapm_widget_for_each_path(widget
, rdir
, path
) {
1106 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
1108 if (path
->weak
|| path
->is_supply
)
1114 trace_snd_soc_dapm_path(widget
, dir
, path
);
1116 if (path
->connect
) {
1118 con
+= fn(path
->node
[dir
], list
, custom_stop_condition
);
1123 widget
->endpoints
[dir
] = con
;
1129 * Recursively check for a completed path to an active or physically connected
1130 * output widget. Returns number of complete paths.
1132 * Optionally, can be supplied with a function acting as a stopping condition.
1133 * This function takes the dapm widget currently being examined and the walk
1134 * direction as an arguments, it should return true if the walk should be
1135 * stopped and false otherwise.
1137 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
1138 struct list_head
*list
,
1139 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*i
,
1140 enum snd_soc_dapm_direction
))
1142 return is_connected_ep(widget
, list
, SND_SOC_DAPM_DIR_OUT
,
1143 is_connected_output_ep
, custom_stop_condition
);
1147 * Recursively check for a completed path to an active or physically connected
1148 * input widget. Returns number of complete paths.
1150 * Optionally, can be supplied with a function acting as a stopping condition.
1151 * This function takes the dapm widget currently being examined and the walk
1152 * direction as an arguments, it should return true if the walk should be
1153 * stopped and false otherwise.
1155 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
1156 struct list_head
*list
,
1157 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*i
,
1158 enum snd_soc_dapm_direction
))
1160 return is_connected_ep(widget
, list
, SND_SOC_DAPM_DIR_IN
,
1161 is_connected_input_ep
, custom_stop_condition
);
1165 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1166 * @dai: the soc DAI.
1167 * @stream: stream direction.
1168 * @list: list of active widgets for this stream.
1169 * @custom_stop_condition: (optional) a function meant to stop the widget graph
1170 * walk based on custom logic.
1172 * Queries DAPM graph as to whether an valid audio stream path exists for
1173 * the initial stream specified by name. This takes into account
1174 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1176 * Optionally, can be supplied with a function acting as a stopping condition.
1177 * This function takes the dapm widget currently being examined and the walk
1178 * direction as an arguments, it should return true if the walk should be
1179 * stopped and false otherwise.
1181 * Returns the number of valid paths or negative error.
1183 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
1184 struct snd_soc_dapm_widget_list
**list
,
1185 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1186 enum snd_soc_dapm_direction
))
1188 struct snd_soc_card
*card
= dai
->component
->card
;
1189 struct snd_soc_dapm_widget
*w
;
1194 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1197 * For is_connected_{output,input}_ep fully discover the graph we need
1198 * to reset the cached number of inputs and outputs.
1200 list_for_each_entry(w
, &card
->widgets
, list
) {
1201 w
->endpoints
[SND_SOC_DAPM_DIR_IN
] = -1;
1202 w
->endpoints
[SND_SOC_DAPM_DIR_OUT
] = -1;
1205 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
1206 paths
= is_connected_output_ep(dai
->playback_widget
, &widgets
,
1207 custom_stop_condition
);
1209 paths
= is_connected_input_ep(dai
->capture_widget
, &widgets
,
1210 custom_stop_condition
);
1212 /* Drop starting point */
1213 list_del(widgets
.next
);
1215 ret
= dapm_widget_list_create(list
, &widgets
);
1219 trace_snd_soc_dapm_connected(paths
, stream
);
1220 mutex_unlock(&card
->dapm_mutex
);
1226 * Handler for regulator supply widget.
1228 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1229 struct snd_kcontrol
*kcontrol
, int event
)
1233 soc_dapm_async_complete(w
->dapm
);
1235 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1236 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1237 ret
= regulator_allow_bypass(w
->regulator
, false);
1239 dev_warn(w
->dapm
->dev
,
1240 "ASoC: Failed to unbypass %s: %d\n",
1244 return regulator_enable(w
->regulator
);
1246 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1247 ret
= regulator_allow_bypass(w
->regulator
, true);
1249 dev_warn(w
->dapm
->dev
,
1250 "ASoC: Failed to bypass %s: %d\n",
1254 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1257 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1260 * Handler for clock supply widget.
1262 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1263 struct snd_kcontrol
*kcontrol
, int event
)
1268 soc_dapm_async_complete(w
->dapm
);
1270 #ifdef CONFIG_HAVE_CLK
1271 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1272 return clk_prepare_enable(w
->clk
);
1274 clk_disable_unprepare(w
->clk
);
1280 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1282 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1284 if (w
->power_checked
)
1285 return w
->new_power
;
1290 w
->new_power
= w
->power_check(w
);
1292 w
->power_checked
= true;
1294 return w
->new_power
;
1297 /* Generic check to see if a widget should be powered.
1299 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1303 DAPM_UPDATE_STAT(w
, power_checks
);
1305 in
= is_connected_input_ep(w
, NULL
, NULL
);
1306 out
= is_connected_output_ep(w
, NULL
, NULL
);
1307 return out
!= 0 && in
!= 0;
1310 /* Check to see if a power supply is needed */
1311 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1313 struct snd_soc_dapm_path
*path
;
1315 DAPM_UPDATE_STAT(w
, power_checks
);
1317 /* Check if one of our outputs is connected */
1318 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
1319 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1324 if (path
->connected
&&
1325 !path
->connected(path
->source
, path
->sink
))
1328 if (dapm_widget_power_check(path
->sink
))
1335 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1337 return w
->connected
;
1340 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1341 struct snd_soc_dapm_widget
*b
,
1349 sort
= dapm_down_seq
;
1351 if (sort
[a
->id
] != sort
[b
->id
])
1352 return sort
[a
->id
] - sort
[b
->id
];
1353 if (a
->subseq
!= b
->subseq
) {
1355 return a
->subseq
- b
->subseq
;
1357 return b
->subseq
- a
->subseq
;
1359 if (a
->reg
!= b
->reg
)
1360 return a
->reg
- b
->reg
;
1361 if (a
->dapm
!= b
->dapm
)
1362 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1367 /* Insert a widget in order into a DAPM power sequence. */
1368 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1369 struct list_head
*list
,
1372 struct snd_soc_dapm_widget
*w
;
1374 list_for_each_entry(w
, list
, power_list
)
1375 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1376 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1380 list_add_tail(&new_widget
->power_list
, list
);
1383 static void dapm_seq_check_event(struct snd_soc_card
*card
,
1384 struct snd_soc_dapm_widget
*w
, int event
)
1386 const char *ev_name
;
1390 case SND_SOC_DAPM_PRE_PMU
:
1391 ev_name
= "PRE_PMU";
1394 case SND_SOC_DAPM_POST_PMU
:
1395 ev_name
= "POST_PMU";
1398 case SND_SOC_DAPM_PRE_PMD
:
1399 ev_name
= "PRE_PMD";
1402 case SND_SOC_DAPM_POST_PMD
:
1403 ev_name
= "POST_PMD";
1406 case SND_SOC_DAPM_WILL_PMU
:
1407 ev_name
= "WILL_PMU";
1410 case SND_SOC_DAPM_WILL_PMD
:
1411 ev_name
= "WILL_PMD";
1415 WARN(1, "Unknown event %d\n", event
);
1419 if (w
->new_power
!= power
)
1422 if (w
->event
&& (w
->event_flags
& event
)) {
1423 pop_dbg(w
->dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1425 soc_dapm_async_complete(w
->dapm
);
1426 trace_snd_soc_dapm_widget_event_start(w
, event
);
1427 ret
= w
->event(w
, NULL
, event
);
1428 trace_snd_soc_dapm_widget_event_done(w
, event
);
1430 dev_err(w
->dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1431 ev_name
, w
->name
, ret
);
1435 /* Apply the coalesced changes from a DAPM sequence */
1436 static void dapm_seq_run_coalesced(struct snd_soc_card
*card
,
1437 struct list_head
*pending
)
1439 struct snd_soc_dapm_context
*dapm
;
1440 struct snd_soc_dapm_widget
*w
;
1442 unsigned int value
= 0;
1443 unsigned int mask
= 0;
1445 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
, power_list
);
1449 list_for_each_entry(w
, pending
, power_list
) {
1450 WARN_ON(reg
!= w
->reg
|| dapm
!= w
->dapm
);
1451 w
->power
= w
->new_power
;
1453 mask
|= w
->mask
<< w
->shift
;
1455 value
|= w
->on_val
<< w
->shift
;
1457 value
|= w
->off_val
<< w
->shift
;
1459 pop_dbg(dapm
->dev
, card
->pop_time
,
1460 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1461 w
->name
, reg
, value
, mask
);
1463 /* Check for events */
1464 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMU
);
1465 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMD
);
1469 /* Any widget will do, they should all be updating the
1473 pop_dbg(dapm
->dev
, card
->pop_time
,
1474 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1475 value
, mask
, reg
, card
->pop_time
);
1476 pop_wait(card
->pop_time
);
1477 soc_dapm_update_bits(dapm
, reg
, mask
, value
);
1480 list_for_each_entry(w
, pending
, power_list
) {
1481 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMU
);
1482 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMD
);
1486 /* Apply a DAPM power sequence.
1488 * We walk over a pre-sorted list of widgets to apply power to. In
1489 * order to minimise the number of writes to the device required
1490 * multiple widgets will be updated in a single write where possible.
1491 * Currently anything that requires more than a single write is not
1494 static void dapm_seq_run(struct snd_soc_card
*card
,
1495 struct list_head
*list
, int event
, bool power_up
)
1497 struct snd_soc_dapm_widget
*w
, *n
;
1498 struct snd_soc_dapm_context
*d
;
1501 int cur_subseq
= -1;
1502 int cur_reg
= SND_SOC_NOPM
;
1503 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1510 sort
= dapm_down_seq
;
1512 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1515 /* Do we need to apply any queued changes? */
1516 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1517 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1518 if (!list_empty(&pending
))
1519 dapm_seq_run_coalesced(card
, &pending
);
1521 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1522 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1523 if (sort
[i
] == cur_sort
)
1524 cur_dapm
->seq_notifier(cur_dapm
,
1529 if (cur_dapm
&& w
->dapm
!= cur_dapm
)
1530 soc_dapm_async_complete(cur_dapm
);
1532 INIT_LIST_HEAD(&pending
);
1534 cur_subseq
= INT_MIN
;
1535 cur_reg
= SND_SOC_NOPM
;
1540 case snd_soc_dapm_pre
:
1542 list_for_each_entry_safe_continue(w
, n
, list
,
1545 if (event
== SND_SOC_DAPM_STREAM_START
)
1547 NULL
, SND_SOC_DAPM_PRE_PMU
);
1548 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1550 NULL
, SND_SOC_DAPM_PRE_PMD
);
1553 case snd_soc_dapm_post
:
1555 list_for_each_entry_safe_continue(w
, n
, list
,
1558 if (event
== SND_SOC_DAPM_STREAM_START
)
1560 NULL
, SND_SOC_DAPM_POST_PMU
);
1561 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1563 NULL
, SND_SOC_DAPM_POST_PMD
);
1567 /* Queue it up for application */
1568 cur_sort
= sort
[w
->id
];
1569 cur_subseq
= w
->subseq
;
1572 list_move(&w
->power_list
, &pending
);
1577 dev_err(w
->dapm
->dev
,
1578 "ASoC: Failed to apply widget power: %d\n", ret
);
1581 if (!list_empty(&pending
))
1582 dapm_seq_run_coalesced(card
, &pending
);
1584 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1585 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1586 if (sort
[i
] == cur_sort
)
1587 cur_dapm
->seq_notifier(cur_dapm
,
1591 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1592 soc_dapm_async_complete(d
);
1596 static void dapm_widget_update(struct snd_soc_card
*card
)
1598 struct snd_soc_dapm_update
*update
= card
->update
;
1599 struct snd_soc_dapm_widget_list
*wlist
;
1600 struct snd_soc_dapm_widget
*w
= NULL
;
1604 if (!update
|| !dapm_kcontrol_is_powered(update
->kcontrol
))
1607 wlist
= dapm_kcontrol_get_wlist(update
->kcontrol
);
1609 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1610 w
= wlist
->widgets
[wi
];
1612 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1613 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1615 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1623 ret
= soc_dapm_update_bits(w
->dapm
, update
->reg
, update
->mask
,
1626 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1629 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1630 w
= wlist
->widgets
[wi
];
1632 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1633 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1635 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1641 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1642 * they're changing state.
1644 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1646 struct snd_soc_dapm_context
*d
= data
;
1649 /* If we're off and we're not supposed to be go into STANDBY */
1650 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1651 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1653 pm_runtime_get_sync(d
->dev
);
1655 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1658 "ASoC: Failed to turn on bias: %d\n", ret
);
1661 /* Prepare for a transition to ON or away from ON */
1662 if ((d
->target_bias_level
== SND_SOC_BIAS_ON
&&
1663 d
->bias_level
!= SND_SOC_BIAS_ON
) ||
1664 (d
->target_bias_level
!= SND_SOC_BIAS_ON
&&
1665 d
->bias_level
== SND_SOC_BIAS_ON
)) {
1666 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1669 "ASoC: Failed to prepare bias: %d\n", ret
);
1673 /* Async callback run prior to DAPM sequences - brings to their final
1676 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1678 struct snd_soc_dapm_context
*d
= data
;
1681 /* If we just powered the last thing off drop to standby bias */
1682 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1683 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1684 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1685 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1687 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1691 /* If we're in standby and can support bias off then do that */
1692 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1693 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1694 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1696 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1700 pm_runtime_put(d
->dev
);
1703 /* If we just powered up then move to active bias */
1704 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1705 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1706 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1708 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1713 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1714 bool power
, bool connect
)
1716 /* If a connection is being made or broken then that update
1717 * will have marked the peer dirty, otherwise the widgets are
1718 * not connected and this update has no impact. */
1722 /* If the peer is already in the state we're moving to then we
1723 * won't have an impact on it. */
1724 if (power
!= peer
->power
)
1725 dapm_mark_dirty(peer
, "peer state change");
1728 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1729 struct list_head
*up_list
,
1730 struct list_head
*down_list
)
1732 struct snd_soc_dapm_path
*path
;
1734 if (w
->power
== power
)
1737 trace_snd_soc_dapm_widget_power(w
, power
);
1739 /* If we changed our power state perhaps our neigbours changed
1742 snd_soc_dapm_widget_for_each_source_path(w
, path
)
1743 dapm_widget_set_peer_power(path
->source
, power
, path
->connect
);
1745 /* Supplies can't affect their outputs, only their inputs */
1746 if (!w
->is_supply
) {
1747 snd_soc_dapm_widget_for_each_sink_path(w
, path
)
1748 dapm_widget_set_peer_power(path
->sink
, power
,
1753 dapm_seq_insert(w
, up_list
, true);
1755 dapm_seq_insert(w
, down_list
, false);
1758 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1759 struct list_head
*up_list
,
1760 struct list_head
*down_list
)
1765 case snd_soc_dapm_pre
:
1766 dapm_seq_insert(w
, down_list
, false);
1768 case snd_soc_dapm_post
:
1769 dapm_seq_insert(w
, up_list
, true);
1773 power
= dapm_widget_power_check(w
);
1775 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1780 static bool dapm_idle_bias_off(struct snd_soc_dapm_context
*dapm
)
1782 if (dapm
->idle_bias_off
)
1785 switch (snd_power_get_state(dapm
->card
->snd_card
)) {
1786 case SNDRV_CTL_POWER_D3hot
:
1787 case SNDRV_CTL_POWER_D3cold
:
1788 return dapm
->suspend_bias_off
;
1797 * Scan each dapm widget for complete audio path.
1798 * A complete path is a route that has valid endpoints i.e.:-
1800 * o DAC to output pin.
1801 * o Input Pin to ADC.
1802 * o Input pin to Output pin (bypass, sidetone)
1803 * o DAC to ADC (loopback).
1805 static int dapm_power_widgets(struct snd_soc_card
*card
, int event
)
1807 struct snd_soc_dapm_widget
*w
;
1808 struct snd_soc_dapm_context
*d
;
1810 LIST_HEAD(down_list
);
1811 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1812 enum snd_soc_bias_level bias
;
1814 lockdep_assert_held(&card
->dapm_mutex
);
1816 trace_snd_soc_dapm_start(card
);
1818 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1819 if (dapm_idle_bias_off(d
))
1820 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1822 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1827 /* Check which widgets we need to power and store them in
1828 * lists indicating if they should be powered up or down. We
1829 * only check widgets that have been flagged as dirty but note
1830 * that new widgets may be added to the dirty list while we
1833 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1834 dapm_power_one_widget(w
, &up_list
, &down_list
);
1837 list_for_each_entry(w
, &card
->widgets
, list
) {
1839 case snd_soc_dapm_pre
:
1840 case snd_soc_dapm_post
:
1841 /* These widgets always need to be powered */
1844 list_del_init(&w
->dirty
);
1851 /* Supplies and micbiases only bring the
1852 * context up to STANDBY as unless something
1853 * else is active and passing audio they
1854 * generally don't require full power. Signal
1855 * generators are virtual pins and have no
1856 * power impact themselves.
1859 case snd_soc_dapm_siggen
:
1860 case snd_soc_dapm_vmid
:
1862 case snd_soc_dapm_supply
:
1863 case snd_soc_dapm_regulator_supply
:
1864 case snd_soc_dapm_clock_supply
:
1865 case snd_soc_dapm_micbias
:
1866 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1867 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1870 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1877 /* Force all contexts in the card to the same bias state if
1878 * they're not ground referenced.
1880 bias
= SND_SOC_BIAS_OFF
;
1881 list_for_each_entry(d
, &card
->dapm_list
, list
)
1882 if (d
->target_bias_level
> bias
)
1883 bias
= d
->target_bias_level
;
1884 list_for_each_entry(d
, &card
->dapm_list
, list
)
1885 if (!dapm_idle_bias_off(d
))
1886 d
->target_bias_level
= bias
;
1888 trace_snd_soc_dapm_walk_done(card
);
1890 /* Run card bias changes at first */
1891 dapm_pre_sequence_async(&card
->dapm
, 0);
1892 /* Run other bias changes in parallel */
1893 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1894 if (d
!= &card
->dapm
)
1895 async_schedule_domain(dapm_pre_sequence_async
, d
,
1898 async_synchronize_full_domain(&async_domain
);
1900 list_for_each_entry(w
, &down_list
, power_list
) {
1901 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMD
);
1904 list_for_each_entry(w
, &up_list
, power_list
) {
1905 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMU
);
1908 /* Power down widgets first; try to avoid amplifying pops. */
1909 dapm_seq_run(card
, &down_list
, event
, false);
1911 dapm_widget_update(card
);
1914 dapm_seq_run(card
, &up_list
, event
, true);
1916 /* Run all the bias changes in parallel */
1917 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1918 if (d
!= &card
->dapm
)
1919 async_schedule_domain(dapm_post_sequence_async
, d
,
1922 async_synchronize_full_domain(&async_domain
);
1923 /* Run card bias changes at last */
1924 dapm_post_sequence_async(&card
->dapm
, 0);
1926 /* do we need to notify any clients that DAPM event is complete */
1927 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1928 if (d
->stream_event
)
1929 d
->stream_event(d
, event
);
1932 pop_dbg(card
->dev
, card
->pop_time
,
1933 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1934 pop_wait(card
->pop_time
);
1936 trace_snd_soc_dapm_done(card
);
1941 #ifdef CONFIG_DEBUG_FS
1942 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1943 char __user
*user_buf
,
1944 size_t count
, loff_t
*ppos
)
1946 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1947 struct snd_soc_card
*card
= w
->dapm
->card
;
1948 enum snd_soc_dapm_direction dir
, rdir
;
1952 struct snd_soc_dapm_path
*p
= NULL
;
1954 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1958 mutex_lock(&card
->dapm_mutex
);
1960 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
1965 in
= is_connected_input_ep(w
, NULL
, NULL
);
1966 out
= is_connected_output_ep(w
, NULL
, NULL
);
1969 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1970 w
->name
, w
->power
? "On" : "Off",
1971 w
->force
? " (forced)" : "", in
, out
);
1974 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1975 " - R%d(0x%x) mask 0x%x",
1976 w
->reg
, w
->reg
, w
->mask
<< w
->shift
);
1978 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1981 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1983 w
->active
? "active" : "inactive");
1985 snd_soc_dapm_for_each_direction(dir
) {
1986 rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
1987 snd_soc_dapm_widget_for_each_path(w
, dir
, p
) {
1988 if (p
->connected
&& !p
->connected(w
, p
->node
[rdir
]))
1994 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1995 " %s \"%s\" \"%s\"\n",
1996 (rdir
== SND_SOC_DAPM_DIR_IN
) ? "in" : "out",
1997 p
->name
? p
->name
: "static",
1998 p
->node
[rdir
]->name
);
2002 mutex_unlock(&card
->dapm_mutex
);
2004 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
2010 static const struct file_operations dapm_widget_power_fops
= {
2011 .open
= simple_open
,
2012 .read
= dapm_widget_power_read_file
,
2013 .llseek
= default_llseek
,
2016 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
2017 size_t count
, loff_t
*ppos
)
2019 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
2022 switch (dapm
->bias_level
) {
2023 case SND_SOC_BIAS_ON
:
2026 case SND_SOC_BIAS_PREPARE
:
2027 level
= "Prepare\n";
2029 case SND_SOC_BIAS_STANDBY
:
2030 level
= "Standby\n";
2032 case SND_SOC_BIAS_OFF
:
2036 WARN(1, "Unknown bias_level %d\n", dapm
->bias_level
);
2037 level
= "Unknown\n";
2041 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
2045 static const struct file_operations dapm_bias_fops
= {
2046 .open
= simple_open
,
2047 .read
= dapm_bias_read_file
,
2048 .llseek
= default_llseek
,
2051 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2052 struct dentry
*parent
)
2059 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
2061 if (!dapm
->debugfs_dapm
) {
2063 "ASoC: Failed to create DAPM debugfs directory\n");
2067 d
= debugfs_create_file("bias_level", 0444,
2068 dapm
->debugfs_dapm
, dapm
,
2072 "ASoC: Failed to create bias level debugfs file\n");
2075 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2077 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
2080 if (!dapm
->debugfs_dapm
|| !w
->name
)
2083 d
= debugfs_create_file(w
->name
, 0444,
2084 dapm
->debugfs_dapm
, w
,
2085 &dapm_widget_power_fops
);
2087 dev_warn(w
->dapm
->dev
,
2088 "ASoC: Failed to create %s debugfs file\n",
2092 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2094 debugfs_remove_recursive(dapm
->debugfs_dapm
);
2098 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2099 struct dentry
*parent
)
2103 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2107 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2114 * soc_dapm_connect_path() - Connects or disconnects a path
2115 * @path: The path to update
2116 * @connect: The new connect state of the path. True if the path is connected,
2117 * false if it is disconneted.
2118 * @reason: The reason why the path changed (for debugging only)
2120 static void soc_dapm_connect_path(struct snd_soc_dapm_path
*path
,
2121 bool connect
, const char *reason
)
2123 if (path
->connect
== connect
)
2126 path
->connect
= connect
;
2127 dapm_mark_dirty(path
->source
, reason
);
2128 dapm_mark_dirty(path
->sink
, reason
);
2129 dapm_path_invalidate(path
);
2132 /* test and update the power status of a mux widget */
2133 static int soc_dapm_mux_update_power(struct snd_soc_card
*card
,
2134 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
2136 struct snd_soc_dapm_path
*path
;
2140 lockdep_assert_held(&card
->dapm_mutex
);
2142 /* find dapm widget path assoc with kcontrol */
2143 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2145 /* we now need to match the string in the enum to the path */
2146 if (!(strcmp(path
->name
, e
->texts
[mux
])))
2151 soc_dapm_connect_path(path
, connect
, "mux update");
2155 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2160 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context
*dapm
,
2161 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
,
2162 struct snd_soc_dapm_update
*update
)
2164 struct snd_soc_card
*card
= dapm
->card
;
2167 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2168 card
->update
= update
;
2169 ret
= soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
2170 card
->update
= NULL
;
2171 mutex_unlock(&card
->dapm_mutex
);
2173 soc_dpcm_runtime_update(card
);
2176 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
2178 /* test and update the power status of a mixer or switch widget */
2179 static int soc_dapm_mixer_update_power(struct snd_soc_card
*card
,
2180 struct snd_kcontrol
*kcontrol
, int connect
)
2182 struct snd_soc_dapm_path
*path
;
2185 lockdep_assert_held(&card
->dapm_mutex
);
2187 /* find dapm widget path assoc with kcontrol */
2188 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2190 soc_dapm_connect_path(path
, connect
, "mixer update");
2194 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2199 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context
*dapm
,
2200 struct snd_kcontrol
*kcontrol
, int connect
,
2201 struct snd_soc_dapm_update
*update
)
2203 struct snd_soc_card
*card
= dapm
->card
;
2206 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2207 card
->update
= update
;
2208 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
2209 card
->update
= NULL
;
2210 mutex_unlock(&card
->dapm_mutex
);
2212 soc_dpcm_runtime_update(card
);
2215 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
2217 static ssize_t
dapm_widget_show_component(struct snd_soc_component
*cmpnt
,
2220 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(cmpnt
);
2221 struct snd_soc_dapm_widget
*w
;
2223 char *state
= "not set";
2225 /* card won't be set for the dummy component, as a spot fix
2226 * we're checking for that case specifically here but in future
2227 * we will ensure that the dummy component looks like others.
2232 list_for_each_entry(w
, &cmpnt
->card
->widgets
, list
) {
2233 if (w
->dapm
!= dapm
)
2236 /* only display widgets that burnm power */
2238 case snd_soc_dapm_hp
:
2239 case snd_soc_dapm_mic
:
2240 case snd_soc_dapm_spk
:
2241 case snd_soc_dapm_line
:
2242 case snd_soc_dapm_micbias
:
2243 case snd_soc_dapm_dac
:
2244 case snd_soc_dapm_adc
:
2245 case snd_soc_dapm_pga
:
2246 case snd_soc_dapm_out_drv
:
2247 case snd_soc_dapm_mixer
:
2248 case snd_soc_dapm_mixer_named_ctl
:
2249 case snd_soc_dapm_supply
:
2250 case snd_soc_dapm_regulator_supply
:
2251 case snd_soc_dapm_clock_supply
:
2253 count
+= sprintf(buf
+ count
, "%s: %s\n",
2254 w
->name
, w
->power
? "On":"Off");
2261 switch (snd_soc_dapm_get_bias_level(dapm
)) {
2262 case SND_SOC_BIAS_ON
:
2265 case SND_SOC_BIAS_PREPARE
:
2268 case SND_SOC_BIAS_STANDBY
:
2271 case SND_SOC_BIAS_OFF
:
2275 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2280 /* show dapm widget status in sys fs */
2281 static ssize_t
dapm_widget_show(struct device
*dev
,
2282 struct device_attribute
*attr
, char *buf
)
2284 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2287 mutex_lock(&rtd
->card
->dapm_mutex
);
2289 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
2290 struct snd_soc_component
*cmpnt
= rtd
->codec_dais
[i
]->component
;
2292 count
+= dapm_widget_show_component(cmpnt
, buf
+ count
);
2295 mutex_unlock(&rtd
->card
->dapm_mutex
);
2300 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2302 struct attribute
*soc_dapm_dev_attrs
[] = {
2303 &dev_attr_dapm_widget
.attr
,
2307 static void dapm_free_path(struct snd_soc_dapm_path
*path
)
2309 list_del(&path
->list_node
[SND_SOC_DAPM_DIR_IN
]);
2310 list_del(&path
->list_node
[SND_SOC_DAPM_DIR_OUT
]);
2311 list_del(&path
->list_kcontrol
);
2312 list_del(&path
->list
);
2316 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget
*w
)
2318 struct snd_soc_dapm_path
*p
, *next_p
;
2319 enum snd_soc_dapm_direction dir
;
2323 * remove source and sink paths associated to this widget.
2324 * While removing the path, remove reference to it from both
2325 * source and sink widgets so that path is removed only once.
2327 snd_soc_dapm_for_each_direction(dir
) {
2328 snd_soc_dapm_widget_for_each_path_safe(w
, dir
, p
, next_p
)
2332 kfree(w
->kcontrols
);
2333 kfree_const(w
->name
);
2337 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context
*dapm
)
2339 dapm
->path_sink_cache
.widget
= NULL
;
2340 dapm
->path_source_cache
.widget
= NULL
;
2343 /* free all dapm widgets and resources */
2344 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2346 struct snd_soc_dapm_widget
*w
, *next_w
;
2348 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2349 if (w
->dapm
!= dapm
)
2351 snd_soc_dapm_free_widget(w
);
2353 snd_soc_dapm_reset_cache(dapm
);
2356 static struct snd_soc_dapm_widget
*dapm_find_widget(
2357 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2358 bool search_other_contexts
)
2360 struct snd_soc_dapm_widget
*w
;
2361 struct snd_soc_dapm_widget
*fallback
= NULL
;
2363 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2364 if (!strcmp(w
->name
, pin
)) {
2365 if (w
->dapm
== dapm
)
2372 if (search_other_contexts
)
2378 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2379 const char *pin
, int status
)
2381 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2383 dapm_assert_locked(dapm
);
2386 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2390 if (w
->connected
!= status
) {
2391 dapm_mark_dirty(w
, "pin configuration");
2392 dapm_widget_invalidate_input_paths(w
);
2393 dapm_widget_invalidate_output_paths(w
);
2396 w
->connected
= status
;
2404 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2405 * @dapm: DAPM context
2407 * Walks all dapm audio paths and powers widgets according to their
2408 * stream or path usage.
2410 * Requires external locking.
2412 * Returns 0 for success.
2414 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context
*dapm
)
2417 * Suppress early reports (eg, jacks syncing their state) to avoid
2418 * silly DAPM runs during card startup.
2420 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2423 return dapm_power_widgets(dapm
->card
, SND_SOC_DAPM_STREAM_NOP
);
2425 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked
);
2428 * snd_soc_dapm_sync - scan and power dapm paths
2429 * @dapm: DAPM context
2431 * Walks all dapm audio paths and powers widgets according to their
2432 * stream or path usage.
2434 * Returns 0 for success.
2436 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2440 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2441 ret
= snd_soc_dapm_sync_unlocked(dapm
);
2442 mutex_unlock(&dapm
->card
->dapm_mutex
);
2445 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2448 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2449 * @w: The widget for which to update the flags
2451 * Some widgets have a dynamic category which depends on which neighbors they
2452 * are connected to. This function update the category for these widgets.
2454 * This function must be called whenever a path is added or removed to a widget.
2456 static void dapm_update_widget_flags(struct snd_soc_dapm_widget
*w
)
2458 enum snd_soc_dapm_direction dir
;
2459 struct snd_soc_dapm_path
*p
;
2463 case snd_soc_dapm_input
:
2464 /* On a fully routed card a input is never a source */
2465 if (w
->dapm
->card
->fully_routed
)
2467 ep
= SND_SOC_DAPM_EP_SOURCE
;
2468 snd_soc_dapm_widget_for_each_source_path(w
, p
) {
2469 if (p
->source
->id
== snd_soc_dapm_micbias
||
2470 p
->source
->id
== snd_soc_dapm_mic
||
2471 p
->source
->id
== snd_soc_dapm_line
||
2472 p
->source
->id
== snd_soc_dapm_output
) {
2478 case snd_soc_dapm_output
:
2479 /* On a fully routed card a output is never a sink */
2480 if (w
->dapm
->card
->fully_routed
)
2482 ep
= SND_SOC_DAPM_EP_SINK
;
2483 snd_soc_dapm_widget_for_each_sink_path(w
, p
) {
2484 if (p
->sink
->id
== snd_soc_dapm_spk
||
2485 p
->sink
->id
== snd_soc_dapm_hp
||
2486 p
->sink
->id
== snd_soc_dapm_line
||
2487 p
->sink
->id
== snd_soc_dapm_input
) {
2493 case snd_soc_dapm_line
:
2495 snd_soc_dapm_for_each_direction(dir
) {
2496 if (!list_empty(&w
->edges
[dir
]))
2497 ep
|= SND_SOC_DAPM_DIR_TO_EP(dir
);
2507 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context
*dapm
,
2508 struct snd_soc_dapm_widget
*source
, struct snd_soc_dapm_widget
*sink
,
2509 const char *control
)
2511 bool dynamic_source
= false;
2512 bool dynamic_sink
= false;
2517 switch (source
->id
) {
2518 case snd_soc_dapm_demux
:
2519 dynamic_source
= true;
2526 case snd_soc_dapm_mux
:
2527 case snd_soc_dapm_switch
:
2528 case snd_soc_dapm_mixer
:
2529 case snd_soc_dapm_mixer_named_ctl
:
2530 dynamic_sink
= true;
2536 if (dynamic_source
&& dynamic_sink
) {
2538 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2539 source
->name
, control
, sink
->name
);
2541 } else if (!dynamic_source
&& !dynamic_sink
) {
2543 "Control not supported for path %s -> [%s] -> %s\n",
2544 source
->name
, control
, sink
->name
);
2551 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
2552 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
2553 const char *control
,
2554 int (*connected
)(struct snd_soc_dapm_widget
*source
,
2555 struct snd_soc_dapm_widget
*sink
))
2557 struct snd_soc_dapm_widget
*widgets
[2];
2558 enum snd_soc_dapm_direction dir
;
2559 struct snd_soc_dapm_path
*path
;
2562 if (wsink
->is_supply
&& !wsource
->is_supply
) {
2564 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2565 wsource
->name
, wsink
->name
);
2569 if (connected
&& !wsource
->is_supply
) {
2571 "connected() callback only supported for supply widgets (%s -> %s)\n",
2572 wsource
->name
, wsink
->name
);
2576 if (wsource
->is_supply
&& control
) {
2578 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2579 wsource
->name
, control
, wsink
->name
);
2583 ret
= snd_soc_dapm_check_dynamic_path(dapm
, wsource
, wsink
, control
);
2587 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2591 path
->node
[SND_SOC_DAPM_DIR_IN
] = wsource
;
2592 path
->node
[SND_SOC_DAPM_DIR_OUT
] = wsink
;
2593 widgets
[SND_SOC_DAPM_DIR_IN
] = wsource
;
2594 widgets
[SND_SOC_DAPM_DIR_OUT
] = wsink
;
2596 path
->connected
= connected
;
2597 INIT_LIST_HEAD(&path
->list
);
2598 INIT_LIST_HEAD(&path
->list_kcontrol
);
2600 if (wsource
->is_supply
|| wsink
->is_supply
)
2601 path
->is_supply
= 1;
2603 /* connect static paths */
2604 if (control
== NULL
) {
2607 switch (wsource
->id
) {
2608 case snd_soc_dapm_demux
:
2609 ret
= dapm_connect_mux(dapm
, path
, control
, wsource
);
2617 switch (wsink
->id
) {
2618 case snd_soc_dapm_mux
:
2619 ret
= dapm_connect_mux(dapm
, path
, control
, wsink
);
2623 case snd_soc_dapm_switch
:
2624 case snd_soc_dapm_mixer
:
2625 case snd_soc_dapm_mixer_named_ctl
:
2626 ret
= dapm_connect_mixer(dapm
, path
, control
);
2635 list_add(&path
->list
, &dapm
->card
->paths
);
2636 snd_soc_dapm_for_each_direction(dir
)
2637 list_add(&path
->list_node
[dir
], &widgets
[dir
]->edges
[dir
]);
2639 snd_soc_dapm_for_each_direction(dir
) {
2640 dapm_update_widget_flags(widgets
[dir
]);
2641 dapm_mark_dirty(widgets
[dir
], "Route added");
2644 if (dapm
->card
->instantiated
&& path
->connect
)
2645 dapm_path_invalidate(path
);
2653 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2654 const struct snd_soc_dapm_route
*route
)
2656 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2657 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2660 char prefixed_sink
[80];
2661 char prefixed_source
[80];
2665 prefix
= soc_dapm_prefix(dapm
);
2667 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2668 prefix
, route
->sink
);
2669 sink
= prefixed_sink
;
2670 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2671 prefix
, route
->source
);
2672 source
= prefixed_source
;
2675 source
= route
->source
;
2678 wsource
= dapm_wcache_lookup(&dapm
->path_source_cache
, source
);
2679 wsink
= dapm_wcache_lookup(&dapm
->path_sink_cache
, sink
);
2681 if (wsink
&& wsource
)
2685 * find src and dest widgets over all widgets but favor a widget from
2686 * current DAPM context
2688 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2689 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2691 if (w
->dapm
== dapm
) {
2698 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2700 if (w
->dapm
== dapm
) {
2707 /* use widget from another DAPM context if not found from this */
2713 if (wsource
== NULL
) {
2714 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2718 if (wsink
== NULL
) {
2719 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2725 dapm_wcache_update(&dapm
->path_sink_cache
, wsink
);
2726 dapm_wcache_update(&dapm
->path_source_cache
, wsource
);
2728 ret
= snd_soc_dapm_add_path(dapm
, wsource
, wsink
, route
->control
,
2735 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2736 source
, route
->control
, sink
);
2740 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2741 const struct snd_soc_dapm_route
*route
)
2743 struct snd_soc_dapm_widget
*wsource
, *wsink
;
2744 struct snd_soc_dapm_path
*path
, *p
;
2747 char prefixed_sink
[80];
2748 char prefixed_source
[80];
2751 if (route
->control
) {
2753 "ASoC: Removal of routes with controls not supported\n");
2757 prefix
= soc_dapm_prefix(dapm
);
2759 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2760 prefix
, route
->sink
);
2761 sink
= prefixed_sink
;
2762 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2763 prefix
, route
->source
);
2764 source
= prefixed_source
;
2767 source
= route
->source
;
2771 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2772 if (strcmp(p
->source
->name
, source
) != 0)
2774 if (strcmp(p
->sink
->name
, sink
) != 0)
2781 wsource
= path
->source
;
2784 dapm_mark_dirty(wsource
, "Route removed");
2785 dapm_mark_dirty(wsink
, "Route removed");
2787 dapm_path_invalidate(path
);
2789 dapm_free_path(path
);
2791 /* Update any path related flags */
2792 dapm_update_widget_flags(wsource
);
2793 dapm_update_widget_flags(wsink
);
2795 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
2803 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2804 * @dapm: DAPM context
2805 * @route: audio routes
2806 * @num: number of routes
2808 * Connects 2 dapm widgets together via a named audio path. The sink is
2809 * the widget receiving the audio signal, whilst the source is the sender
2810 * of the audio signal.
2812 * Returns 0 for success else error. On error all resources can be freed
2813 * with a call to snd_soc_card_free().
2815 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2816 const struct snd_soc_dapm_route
*route
, int num
)
2820 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2821 for (i
= 0; i
< num
; i
++) {
2822 r
= snd_soc_dapm_add_route(dapm
, route
);
2824 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
2826 route
->control
? route
->control
: "direct",
2832 mutex_unlock(&dapm
->card
->dapm_mutex
);
2836 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2839 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2840 * @dapm: DAPM context
2841 * @route: audio routes
2842 * @num: number of routes
2844 * Removes routes from the DAPM context.
2846 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2847 const struct snd_soc_dapm_route
*route
, int num
)
2851 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2852 for (i
= 0; i
< num
; i
++) {
2853 snd_soc_dapm_del_route(dapm
, route
);
2856 mutex_unlock(&dapm
->card
->dapm_mutex
);
2860 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2862 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2863 const struct snd_soc_dapm_route
*route
)
2865 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2868 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2871 struct snd_soc_dapm_path
*path
;
2875 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
2881 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
2886 if (route
->control
|| route
->connected
)
2887 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
2888 route
->source
, route
->sink
);
2890 snd_soc_dapm_widget_for_each_sink_path(source
, path
) {
2891 if (path
->sink
== sink
) {
2898 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
2899 route
->source
, route
->sink
);
2901 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
2902 count
, route
->source
, route
->sink
);
2908 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2909 * @dapm: DAPM context
2910 * @route: audio routes
2911 * @num: number of routes
2913 * Mark existing routes matching those specified in the passed array
2914 * as being weak, meaning that they are ignored for the purpose of
2915 * power decisions. The main intended use case is for sidetone paths
2916 * which couple audio between other independent paths if they are both
2917 * active in order to make the combination work better at the user
2918 * level but which aren't intended to be "used".
2920 * Note that CODEC drivers should not use this as sidetone type paths
2921 * can frequently also be used as bypass paths.
2923 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2924 const struct snd_soc_dapm_route
*route
, int num
)
2929 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2930 for (i
= 0; i
< num
; i
++) {
2931 err
= snd_soc_dapm_weak_route(dapm
, route
);
2936 mutex_unlock(&dapm
->card
->dapm_mutex
);
2940 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2943 * snd_soc_dapm_new_widgets - add new dapm widgets
2944 * @card: card to be checked for new dapm widgets
2946 * Checks the codec for any new dapm widgets and creates them if found.
2948 * Returns 0 for success.
2950 int snd_soc_dapm_new_widgets(struct snd_soc_card
*card
)
2952 struct snd_soc_dapm_widget
*w
;
2955 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2957 list_for_each_entry(w
, &card
->widgets
, list
)
2962 if (w
->num_kcontrols
) {
2963 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2964 sizeof(struct snd_kcontrol
*),
2966 if (!w
->kcontrols
) {
2967 mutex_unlock(&card
->dapm_mutex
);
2973 case snd_soc_dapm_switch
:
2974 case snd_soc_dapm_mixer
:
2975 case snd_soc_dapm_mixer_named_ctl
:
2978 case snd_soc_dapm_mux
:
2979 case snd_soc_dapm_demux
:
2982 case snd_soc_dapm_pga
:
2983 case snd_soc_dapm_out_drv
:
2986 case snd_soc_dapm_dai_link
:
2987 dapm_new_dai_link(w
);
2993 /* Read the initial power state from the device */
2995 soc_dapm_read(w
->dapm
, w
->reg
, &val
);
2996 val
= val
>> w
->shift
;
2998 if (val
== w
->on_val
)
3004 dapm_mark_dirty(w
, "new widget");
3005 dapm_debugfs_add_widget(w
);
3008 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
3009 mutex_unlock(&card
->dapm_mutex
);
3012 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
3015 * snd_soc_dapm_get_volsw - dapm mixer get callback
3016 * @kcontrol: mixer control
3017 * @ucontrol: control element information
3019 * Callback to get the value of a dapm mixer control.
3021 * Returns 0 for success.
3023 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
3024 struct snd_ctl_elem_value
*ucontrol
)
3026 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3027 struct snd_soc_card
*card
= dapm
->card
;
3028 struct soc_mixer_control
*mc
=
3029 (struct soc_mixer_control
*)kcontrol
->private_value
;
3031 unsigned int shift
= mc
->shift
;
3033 unsigned int mask
= (1 << fls(max
)) - 1;
3034 unsigned int invert
= mc
->invert
;
3038 if (snd_soc_volsw_is_stereo(mc
))
3040 "ASoC: Control '%s' is stereo, which is not supported\n",
3043 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3044 if (dapm_kcontrol_is_powered(kcontrol
) && reg
!= SND_SOC_NOPM
) {
3045 ret
= soc_dapm_read(dapm
, reg
, &val
);
3046 val
= (val
>> shift
) & mask
;
3048 val
= dapm_kcontrol_get_value(kcontrol
);
3050 mutex_unlock(&card
->dapm_mutex
);
3053 ucontrol
->value
.integer
.value
[0] = max
- val
;
3055 ucontrol
->value
.integer
.value
[0] = val
;
3059 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
3062 * snd_soc_dapm_put_volsw - dapm mixer set callback
3063 * @kcontrol: mixer control
3064 * @ucontrol: control element information
3066 * Callback to set the value of a dapm mixer control.
3068 * Returns 0 for success.
3070 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
3071 struct snd_ctl_elem_value
*ucontrol
)
3073 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3074 struct snd_soc_card
*card
= dapm
->card
;
3075 struct soc_mixer_control
*mc
=
3076 (struct soc_mixer_control
*)kcontrol
->private_value
;
3078 unsigned int shift
= mc
->shift
;
3080 unsigned int mask
= (1 << fls(max
)) - 1;
3081 unsigned int invert
= mc
->invert
;
3083 int connect
, change
, reg_change
= 0;
3084 struct snd_soc_dapm_update update
;
3087 if (snd_soc_volsw_is_stereo(mc
))
3089 "ASoC: Control '%s' is stereo, which is not supported\n",
3092 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
3098 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3100 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3102 if (reg
!= SND_SOC_NOPM
) {
3103 mask
= mask
<< shift
;
3106 reg_change
= soc_dapm_test_bits(dapm
, reg
, mask
, val
);
3109 if (change
|| reg_change
) {
3111 update
.kcontrol
= kcontrol
;
3115 card
->update
= &update
;
3117 change
|= reg_change
;
3119 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
);
3121 card
->update
= NULL
;
3124 mutex_unlock(&card
->dapm_mutex
);
3127 soc_dpcm_runtime_update(card
);
3131 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
3134 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3135 * @kcontrol: mixer control
3136 * @ucontrol: control element information
3138 * Callback to get the value of a dapm enumerated double mixer control.
3140 * Returns 0 for success.
3142 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
3143 struct snd_ctl_elem_value
*ucontrol
)
3145 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3146 struct snd_soc_card
*card
= dapm
->card
;
3147 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3148 unsigned int reg_val
, val
;
3150 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3151 if (e
->reg
!= SND_SOC_NOPM
&& dapm_kcontrol_is_powered(kcontrol
)) {
3152 int ret
= soc_dapm_read(dapm
, e
->reg
, ®_val
);
3154 mutex_unlock(&card
->dapm_mutex
);
3158 reg_val
= dapm_kcontrol_get_value(kcontrol
);
3160 mutex_unlock(&card
->dapm_mutex
);
3162 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
3163 ucontrol
->value
.enumerated
.item
[0] = snd_soc_enum_val_to_item(e
, val
);
3164 if (e
->shift_l
!= e
->shift_r
) {
3165 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
3166 val
= snd_soc_enum_val_to_item(e
, val
);
3167 ucontrol
->value
.enumerated
.item
[1] = val
;
3172 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
3175 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3176 * @kcontrol: mixer control
3177 * @ucontrol: control element information
3179 * Callback to set the value of a dapm enumerated double mixer control.
3181 * Returns 0 for success.
3183 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
3184 struct snd_ctl_elem_value
*ucontrol
)
3186 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3187 struct snd_soc_card
*card
= dapm
->card
;
3188 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3189 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
3190 unsigned int val
, change
, reg_change
= 0;
3192 struct snd_soc_dapm_update update
;
3195 if (item
[0] >= e
->items
)
3198 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
3199 mask
= e
->mask
<< e
->shift_l
;
3200 if (e
->shift_l
!= e
->shift_r
) {
3201 if (item
[1] > e
->items
)
3203 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_l
;
3204 mask
|= e
->mask
<< e
->shift_r
;
3207 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3209 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3211 if (e
->reg
!= SND_SOC_NOPM
)
3212 reg_change
= soc_dapm_test_bits(dapm
, e
->reg
, mask
, val
);
3214 if (change
|| reg_change
) {
3216 update
.kcontrol
= kcontrol
;
3217 update
.reg
= e
->reg
;
3220 card
->update
= &update
;
3222 change
|= reg_change
;
3224 ret
= soc_dapm_mux_update_power(card
, kcontrol
, item
[0], e
);
3226 card
->update
= NULL
;
3229 mutex_unlock(&card
->dapm_mutex
);
3232 soc_dpcm_runtime_update(card
);
3236 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
3239 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3241 * @kcontrol: mixer control
3242 * @uinfo: control element information
3244 * Callback to provide information about a pin switch control.
3246 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
3247 struct snd_ctl_elem_info
*uinfo
)
3249 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
3251 uinfo
->value
.integer
.min
= 0;
3252 uinfo
->value
.integer
.max
= 1;
3256 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
3259 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3261 * @kcontrol: mixer control
3264 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
3265 struct snd_ctl_elem_value
*ucontrol
)
3267 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3268 const char *pin
= (const char *)kcontrol
->private_value
;
3270 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3272 ucontrol
->value
.integer
.value
[0] =
3273 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
3275 mutex_unlock(&card
->dapm_mutex
);
3279 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
3282 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3284 * @kcontrol: mixer control
3287 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3288 struct snd_ctl_elem_value
*ucontrol
)
3290 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3291 const char *pin
= (const char *)kcontrol
->private_value
;
3293 if (ucontrol
->value
.integer
.value
[0])
3294 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3296 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3298 snd_soc_dapm_sync(&card
->dapm
);
3301 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3303 struct snd_soc_dapm_widget
*
3304 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3305 const struct snd_soc_dapm_widget
*widget
)
3307 struct snd_soc_dapm_widget
*w
;
3309 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3310 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3313 "ASoC: Failed to create DAPM control %s\n",
3316 mutex_unlock(&dapm
->card
->dapm_mutex
);
3319 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control
);
3321 struct snd_soc_dapm_widget
*
3322 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context
*dapm
,
3323 const struct snd_soc_dapm_widget
*widget
)
3325 enum snd_soc_dapm_direction dir
;
3326 struct snd_soc_dapm_widget
*w
;
3330 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3334 case snd_soc_dapm_regulator_supply
:
3335 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3336 if (IS_ERR(w
->regulator
)) {
3337 ret
= PTR_ERR(w
->regulator
);
3338 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3343 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3344 ret
= regulator_allow_bypass(w
->regulator
, true);
3346 dev_warn(w
->dapm
->dev
,
3347 "ASoC: Failed to bypass %s: %d\n",
3351 case snd_soc_dapm_clock_supply
:
3352 #ifdef CONFIG_CLKDEV_LOOKUP
3353 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3354 if (IS_ERR(w
->clk
)) {
3355 ret
= PTR_ERR(w
->clk
);
3356 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3368 prefix
= soc_dapm_prefix(dapm
);
3370 w
->name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, widget
->name
);
3372 w
->name
= kstrdup_const(widget
->name
, GFP_KERNEL
);
3373 if (w
->name
== NULL
) {
3379 case snd_soc_dapm_mic
:
3380 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3381 w
->power_check
= dapm_generic_check_power
;
3383 case snd_soc_dapm_input
:
3384 if (!dapm
->card
->fully_routed
)
3385 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3386 w
->power_check
= dapm_generic_check_power
;
3388 case snd_soc_dapm_spk
:
3389 case snd_soc_dapm_hp
:
3390 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3391 w
->power_check
= dapm_generic_check_power
;
3393 case snd_soc_dapm_output
:
3394 if (!dapm
->card
->fully_routed
)
3395 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3396 w
->power_check
= dapm_generic_check_power
;
3398 case snd_soc_dapm_vmid
:
3399 case snd_soc_dapm_siggen
:
3400 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3401 w
->power_check
= dapm_always_on_check_power
;
3403 case snd_soc_dapm_sink
:
3404 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3405 w
->power_check
= dapm_always_on_check_power
;
3408 case snd_soc_dapm_mux
:
3409 case snd_soc_dapm_demux
:
3410 case snd_soc_dapm_switch
:
3411 case snd_soc_dapm_mixer
:
3412 case snd_soc_dapm_mixer_named_ctl
:
3413 case snd_soc_dapm_adc
:
3414 case snd_soc_dapm_aif_out
:
3415 case snd_soc_dapm_dac
:
3416 case snd_soc_dapm_aif_in
:
3417 case snd_soc_dapm_pga
:
3418 case snd_soc_dapm_out_drv
:
3419 case snd_soc_dapm_micbias
:
3420 case snd_soc_dapm_line
:
3421 case snd_soc_dapm_dai_link
:
3422 case snd_soc_dapm_dai_out
:
3423 case snd_soc_dapm_dai_in
:
3424 w
->power_check
= dapm_generic_check_power
;
3426 case snd_soc_dapm_supply
:
3427 case snd_soc_dapm_regulator_supply
:
3428 case snd_soc_dapm_clock_supply
:
3429 case snd_soc_dapm_kcontrol
:
3431 w
->power_check
= dapm_supply_check_power
;
3434 w
->power_check
= dapm_always_on_check_power
;
3439 INIT_LIST_HEAD(&w
->list
);
3440 INIT_LIST_HEAD(&w
->dirty
);
3441 list_add_tail(&w
->list
, &dapm
->card
->widgets
);
3443 snd_soc_dapm_for_each_direction(dir
) {
3444 INIT_LIST_HEAD(&w
->edges
[dir
]);
3445 w
->endpoints
[dir
] = -1;
3448 /* machine layer set ups unconnected pins and insertions */
3454 * snd_soc_dapm_new_controls - create new dapm controls
3455 * @dapm: DAPM context
3456 * @widget: widget array
3457 * @num: number of widgets
3459 * Creates new DAPM controls based upon the templates.
3461 * Returns 0 for success else error.
3463 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3464 const struct snd_soc_dapm_widget
*widget
,
3467 struct snd_soc_dapm_widget
*w
;
3471 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3472 for (i
= 0; i
< num
; i
++) {
3473 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3476 "ASoC: Failed to create DAPM control %s\n",
3483 mutex_unlock(&dapm
->card
->dapm_mutex
);
3486 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3488 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3489 struct snd_kcontrol
*kcontrol
, int event
)
3491 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3492 struct snd_soc_dai
*source
, *sink
;
3493 const struct snd_soc_pcm_stream
*config
= w
->params
+ w
->params_select
;
3494 struct snd_pcm_substream substream
;
3495 struct snd_pcm_hw_params
*params
= NULL
;
3499 if (WARN_ON(!config
) ||
3500 WARN_ON(list_empty(&w
->edges
[SND_SOC_DAPM_DIR_OUT
]) ||
3501 list_empty(&w
->edges
[SND_SOC_DAPM_DIR_IN
])))
3504 /* We only support a single source and sink, pick the first */
3505 source_p
= list_first_entry(&w
->edges
[SND_SOC_DAPM_DIR_OUT
],
3506 struct snd_soc_dapm_path
,
3507 list_node
[SND_SOC_DAPM_DIR_OUT
]);
3508 sink_p
= list_first_entry(&w
->edges
[SND_SOC_DAPM_DIR_IN
],
3509 struct snd_soc_dapm_path
,
3510 list_node
[SND_SOC_DAPM_DIR_IN
]);
3512 source
= source_p
->source
->priv
;
3513 sink
= sink_p
->sink
->priv
;
3515 /* Be a little careful as we don't want to overflow the mask array */
3516 if (config
->formats
) {
3517 fmt
= ffs(config
->formats
) - 1;
3519 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3524 /* Currently very limited parameter selection */
3525 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3530 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3532 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3534 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3537 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3538 = config
->channels_min
;
3539 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3540 = config
->channels_max
;
3542 memset(&substream
, 0, sizeof(substream
));
3545 case SND_SOC_DAPM_PRE_PMU
:
3546 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3547 if (source
->driver
->ops
&& source
->driver
->ops
->startup
) {
3548 ret
= source
->driver
->ops
->startup(&substream
, source
);
3550 dev_err(source
->dev
,
3551 "ASoC: startup() failed: %d\n", ret
);
3556 ret
= soc_dai_hw_params(&substream
, params
, source
);
3560 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3561 if (sink
->driver
->ops
&& sink
->driver
->ops
->startup
) {
3562 ret
= sink
->driver
->ops
->startup(&substream
, sink
);
3565 "ASoC: startup() failed: %d\n", ret
);
3570 ret
= soc_dai_hw_params(&substream
, params
, sink
);
3575 case SND_SOC_DAPM_POST_PMU
:
3576 ret
= snd_soc_dai_digital_mute(sink
, 0,
3577 SNDRV_PCM_STREAM_PLAYBACK
);
3578 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3579 dev_warn(sink
->dev
, "ASoC: Failed to unmute: %d\n", ret
);
3583 case SND_SOC_DAPM_PRE_PMD
:
3584 ret
= snd_soc_dai_digital_mute(sink
, 1,
3585 SNDRV_PCM_STREAM_PLAYBACK
);
3586 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3587 dev_warn(sink
->dev
, "ASoC: Failed to mute: %d\n", ret
);
3591 if (source
->driver
->ops
&& source
->driver
->ops
->shutdown
) {
3592 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3593 source
->driver
->ops
->shutdown(&substream
, source
);
3597 if (sink
->driver
->ops
&& sink
->driver
->ops
->shutdown
) {
3598 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3599 sink
->driver
->ops
->shutdown(&substream
, sink
);
3604 WARN(1, "Unknown event %d\n", event
);
3613 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol
*kcontrol
,
3614 struct snd_ctl_elem_value
*ucontrol
)
3616 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
3618 ucontrol
->value
.enumerated
.item
[0] = w
->params_select
;
3623 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol
*kcontrol
,
3624 struct snd_ctl_elem_value
*ucontrol
)
3626 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
3628 /* Can't change the config when widget is already powered */
3632 if (ucontrol
->value
.enumerated
.item
[0] == w
->params_select
)
3635 if (ucontrol
->value
.enumerated
.item
[0] >= w
->num_params
)
3638 w
->params_select
= ucontrol
->value
.enumerated
.item
[0];
3643 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3644 const struct snd_soc_pcm_stream
*params
,
3645 unsigned int num_params
,
3646 struct snd_soc_dapm_widget
*source
,
3647 struct snd_soc_dapm_widget
*sink
)
3649 struct snd_soc_dapm_widget
template;
3650 struct snd_soc_dapm_widget
*w
;
3653 unsigned long private_value
;
3654 const char **w_param_text
;
3655 struct soc_enum w_param_enum
[] = {
3656 SOC_ENUM_SINGLE(0, 0, 0, NULL
),
3658 struct snd_kcontrol_new kcontrol_dai_link
[] = {
3659 SOC_ENUM_EXT(NULL
, w_param_enum
[0],
3660 snd_soc_dapm_dai_link_get
,
3661 snd_soc_dapm_dai_link_put
),
3663 const struct snd_soc_pcm_stream
*config
= params
;
3665 w_param_text
= devm_kcalloc(card
->dev
, num_params
,
3666 sizeof(char *), GFP_KERNEL
);
3670 link_name
= devm_kasprintf(card
->dev
, GFP_KERNEL
, "%s-%s",
3671 source
->name
, sink
->name
);
3674 goto outfree_w_param
;
3677 for (count
= 0 ; count
< num_params
; count
++) {
3678 if (!config
->stream_name
) {
3679 dev_warn(card
->dapm
.dev
,
3680 "ASoC: anonymous config %d for dai link %s\n",
3682 w_param_text
[count
] =
3683 devm_kasprintf(card
->dev
, GFP_KERNEL
,
3684 "Anonymous Configuration %d",
3686 if (!w_param_text
[count
]) {
3688 goto outfree_link_name
;
3691 w_param_text
[count
] = devm_kmemdup(card
->dev
,
3692 config
->stream_name
,
3693 strlen(config
->stream_name
) + 1,
3695 if (!w_param_text
[count
]) {
3697 goto outfree_link_name
;
3702 w_param_enum
[0].items
= num_params
;
3703 w_param_enum
[0].texts
= w_param_text
;
3705 memset(&template, 0, sizeof(template));
3706 template.reg
= SND_SOC_NOPM
;
3707 template.id
= snd_soc_dapm_dai_link
;
3708 template.name
= link_name
;
3709 template.event
= snd_soc_dai_link_event
;
3710 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3711 SND_SOC_DAPM_PRE_PMD
;
3712 template.num_kcontrols
= 1;
3713 /* duplicate w_param_enum on heap so that memory persists */
3715 (unsigned long) devm_kmemdup(card
->dev
,
3716 (void *)(kcontrol_dai_link
[0].private_value
),
3717 sizeof(struct soc_enum
), GFP_KERNEL
);
3718 if (!private_value
) {
3719 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
3722 goto outfree_link_name
;
3724 kcontrol_dai_link
[0].private_value
= private_value
;
3725 /* duplicate kcontrol_dai_link on heap so that memory persists */
3726 template.kcontrol_news
=
3727 devm_kmemdup(card
->dev
, &kcontrol_dai_link
[0],
3728 sizeof(struct snd_kcontrol_new
),
3730 if (!template.kcontrol_news
) {
3731 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
3734 goto outfree_private_value
;
3737 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
3739 w
= snd_soc_dapm_new_control_unlocked(&card
->dapm
, &template);
3741 dev_err(card
->dev
, "ASoC: Failed to create %s widget\n",
3744 goto outfree_kcontrol_news
;
3748 w
->num_params
= num_params
;
3750 ret
= snd_soc_dapm_add_path(&card
->dapm
, source
, w
, NULL
, NULL
);
3753 return snd_soc_dapm_add_path(&card
->dapm
, w
, sink
, NULL
, NULL
);
3756 devm_kfree(card
->dev
, w
);
3757 outfree_kcontrol_news
:
3758 devm_kfree(card
->dev
, (void *)template.kcontrol_news
);
3759 outfree_private_value
:
3760 devm_kfree(card
->dev
, (void *)private_value
);
3762 devm_kfree(card
->dev
, link_name
);
3764 for (count
= 0 ; count
< num_params
; count
++)
3765 devm_kfree(card
->dev
, (void *)w_param_text
[count
]);
3766 devm_kfree(card
->dev
, w_param_text
);
3771 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3772 struct snd_soc_dai
*dai
)
3774 struct snd_soc_dapm_widget
template;
3775 struct snd_soc_dapm_widget
*w
;
3777 WARN_ON(dapm
->dev
!= dai
->dev
);
3779 memset(&template, 0, sizeof(template));
3780 template.reg
= SND_SOC_NOPM
;
3782 if (dai
->driver
->playback
.stream_name
) {
3783 template.id
= snd_soc_dapm_dai_in
;
3784 template.name
= dai
->driver
->playback
.stream_name
;
3785 template.sname
= dai
->driver
->playback
.stream_name
;
3787 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3790 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
3792 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3793 dai
->driver
->playback
.stream_name
);
3798 dai
->playback_widget
= w
;
3801 if (dai
->driver
->capture
.stream_name
) {
3802 template.id
= snd_soc_dapm_dai_out
;
3803 template.name
= dai
->driver
->capture
.stream_name
;
3804 template.sname
= dai
->driver
->capture
.stream_name
;
3806 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
3809 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
3811 dev_err(dapm
->dev
, "ASoC: Failed to create %s widget\n",
3812 dai
->driver
->capture
.stream_name
);
3817 dai
->capture_widget
= w
;
3823 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3825 struct snd_soc_dapm_widget
*dai_w
, *w
;
3826 struct snd_soc_dapm_widget
*src
, *sink
;
3827 struct snd_soc_dai
*dai
;
3829 /* For each DAI widget... */
3830 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3831 switch (dai_w
->id
) {
3832 case snd_soc_dapm_dai_in
:
3833 case snd_soc_dapm_dai_out
:
3841 /* ...find all widgets with the same stream and link them */
3842 list_for_each_entry(w
, &card
->widgets
, list
) {
3843 if (w
->dapm
!= dai_w
->dapm
)
3847 case snd_soc_dapm_dai_in
:
3848 case snd_soc_dapm_dai_out
:
3854 if (!w
->sname
|| !strstr(w
->sname
, dai_w
->sname
))
3857 if (dai_w
->id
== snd_soc_dapm_dai_in
) {
3864 dev_dbg(dai
->dev
, "%s -> %s\n", src
->name
, sink
->name
);
3865 snd_soc_dapm_add_path(w
->dapm
, src
, sink
, NULL
, NULL
);
3872 static void dapm_connect_dai_link_widgets(struct snd_soc_card
*card
,
3873 struct snd_soc_pcm_runtime
*rtd
)
3875 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3876 struct snd_soc_dapm_widget
*sink
, *source
;
3879 for (i
= 0; i
< rtd
->num_codecs
; i
++) {
3880 struct snd_soc_dai
*codec_dai
= rtd
->codec_dais
[i
];
3882 /* connect BE DAI playback if widgets are valid */
3883 if (codec_dai
->playback_widget
&& cpu_dai
->playback_widget
) {
3884 source
= cpu_dai
->playback_widget
;
3885 sink
= codec_dai
->playback_widget
;
3886 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3887 cpu_dai
->component
->name
, source
->name
,
3888 codec_dai
->component
->name
, sink
->name
);
3890 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3894 /* connect BE DAI capture if widgets are valid */
3895 if (codec_dai
->capture_widget
&& cpu_dai
->capture_widget
) {
3896 source
= codec_dai
->capture_widget
;
3897 sink
= cpu_dai
->capture_widget
;
3898 dev_dbg(rtd
->dev
, "connected DAI link %s:%s -> %s:%s\n",
3899 codec_dai
->component
->name
, source
->name
,
3900 cpu_dai
->component
->name
, sink
->name
);
3902 snd_soc_dapm_add_path(&card
->dapm
, source
, sink
,
3908 static void soc_dapm_dai_stream_event(struct snd_soc_dai
*dai
, int stream
,
3911 struct snd_soc_dapm_widget
*w
;
3914 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
3915 w
= dai
->playback_widget
;
3917 w
= dai
->capture_widget
;
3920 dapm_mark_dirty(w
, "stream event");
3922 if (w
->id
== snd_soc_dapm_dai_in
) {
3923 ep
= SND_SOC_DAPM_EP_SOURCE
;
3924 dapm_widget_invalidate_input_paths(w
);
3926 ep
= SND_SOC_DAPM_EP_SINK
;
3927 dapm_widget_invalidate_output_paths(w
);
3931 case SND_SOC_DAPM_STREAM_START
:
3935 case SND_SOC_DAPM_STREAM_STOP
:
3939 case SND_SOC_DAPM_STREAM_SUSPEND
:
3940 case SND_SOC_DAPM_STREAM_RESUME
:
3941 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3942 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3948 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card
*card
)
3950 struct snd_soc_pcm_runtime
*rtd
;
3952 /* for each BE DAI link... */
3953 list_for_each_entry(rtd
, &card
->rtd_list
, list
) {
3955 * dynamic FE links have no fixed DAI mapping.
3956 * CODEC<->CODEC links have no direct connection.
3958 if (rtd
->dai_link
->dynamic
|| rtd
->dai_link
->params
)
3961 dapm_connect_dai_link_widgets(card
, rtd
);
3965 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3970 soc_dapm_dai_stream_event(rtd
->cpu_dai
, stream
, event
);
3971 for (i
= 0; i
< rtd
->num_codecs
; i
++)
3972 soc_dapm_dai_stream_event(rtd
->codec_dais
[i
], stream
, event
);
3974 dapm_power_widgets(rtd
->card
, event
);
3978 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3979 * @rtd: PCM runtime data
3980 * @stream: stream name
3981 * @event: stream event
3983 * Sends a stream event to the dapm core. The core then makes any
3984 * necessary widget power changes.
3986 * Returns 0 for success else error.
3988 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3991 struct snd_soc_card
*card
= rtd
->card
;
3993 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3994 soc_dapm_stream_event(rtd
, stream
, event
);
3995 mutex_unlock(&card
->dapm_mutex
);
3999 * snd_soc_dapm_enable_pin_unlocked - enable pin.
4000 * @dapm: DAPM context
4003 * Enables input/output pin and its parents or children widgets iff there is
4004 * a valid audio route and active audio stream.
4006 * Requires external locking.
4008 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4009 * do any widget power switching.
4011 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4014 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
4016 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked
);
4019 * snd_soc_dapm_enable_pin - enable pin.
4020 * @dapm: DAPM context
4023 * Enables input/output pin and its parents or children widgets iff there is
4024 * a valid audio route and active audio stream.
4026 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4027 * do any widget power switching.
4029 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
4033 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4035 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 1);
4037 mutex_unlock(&dapm
->card
->dapm_mutex
);
4041 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
4044 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
4045 * @dapm: DAPM context
4048 * Enables input/output pin regardless of any other state. This is
4049 * intended for use with microphone bias supplies used in microphone
4052 * Requires external locking.
4054 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4055 * do any widget power switching.
4057 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4060 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
4063 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4067 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
4068 if (!w
->connected
) {
4070 * w->force does not affect the number of input or output paths,
4071 * so we only have to recheck if w->connected is changed
4073 dapm_widget_invalidate_input_paths(w
);
4074 dapm_widget_invalidate_output_paths(w
);
4078 dapm_mark_dirty(w
, "force enable");
4082 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked
);
4085 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4086 * @dapm: DAPM context
4089 * Enables input/output pin regardless of any other state. This is
4090 * intended for use with microphone bias supplies used in microphone
4093 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4094 * do any widget power switching.
4096 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
4101 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4103 ret
= snd_soc_dapm_force_enable_pin_unlocked(dapm
, pin
);
4105 mutex_unlock(&dapm
->card
->dapm_mutex
);
4109 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
4112 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4113 * @dapm: DAPM context
4116 * Disables input/output pin and its parents or children widgets.
4118 * Requires external locking.
4120 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4121 * do any widget power switching.
4123 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4126 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4128 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked
);
4131 * snd_soc_dapm_disable_pin - disable pin.
4132 * @dapm: DAPM context
4135 * Disables input/output pin and its parents or children widgets.
4137 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4138 * do any widget power switching.
4140 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
4145 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4147 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4149 mutex_unlock(&dapm
->card
->dapm_mutex
);
4153 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
4156 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4157 * @dapm: DAPM context
4160 * Marks the specified pin as being not connected, disabling it along
4161 * any parent or child widgets. At present this is identical to
4162 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4163 * additional things such as disabling controls which only affect
4164 * paths through the pin.
4166 * Requires external locking.
4168 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4169 * do any widget power switching.
4171 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4174 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4176 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked
);
4179 * snd_soc_dapm_nc_pin - permanently disable pin.
4180 * @dapm: DAPM context
4183 * Marks the specified pin as being not connected, disabling it along
4184 * any parent or child widgets. At present this is identical to
4185 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4186 * additional things such as disabling controls which only affect
4187 * paths through the pin.
4189 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4190 * do any widget power switching.
4192 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
4196 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4198 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4200 mutex_unlock(&dapm
->card
->dapm_mutex
);
4204 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
4207 * snd_soc_dapm_get_pin_status - get audio pin status
4208 * @dapm: DAPM context
4209 * @pin: audio signal pin endpoint (or start point)
4211 * Get audio pin status - connected or disconnected.
4213 * Returns 1 for connected otherwise 0.
4215 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
4218 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
4221 return w
->connected
;
4225 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
4228 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4229 * @dapm: DAPM context
4230 * @pin: audio signal pin endpoint (or start point)
4232 * Mark the given endpoint or pin as ignoring suspend. When the
4233 * system is disabled a path between two endpoints flagged as ignoring
4234 * suspend will not be disabled. The path must already be enabled via
4235 * normal means at suspend time, it will not be turned on if it was not
4238 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
4241 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
4244 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4248 w
->ignore_suspend
= 1;
4252 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
4255 * snd_soc_dapm_free - free dapm resources
4256 * @dapm: DAPM context
4258 * Free all dapm widgets and resources.
4260 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
4262 dapm_debugfs_cleanup(dapm
);
4263 dapm_free_widgets(dapm
);
4264 list_del(&dapm
->list
);
4266 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
4268 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context
*dapm
)
4270 struct snd_soc_card
*card
= dapm
->card
;
4271 struct snd_soc_dapm_widget
*w
;
4272 LIST_HEAD(down_list
);
4275 mutex_lock(&card
->dapm_mutex
);
4277 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
4278 if (w
->dapm
!= dapm
)
4281 dapm_seq_insert(w
, &down_list
, false);
4287 /* If there were no widgets to power down we're already in
4291 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
4292 snd_soc_dapm_set_bias_level(dapm
,
4293 SND_SOC_BIAS_PREPARE
);
4294 dapm_seq_run(card
, &down_list
, 0, false);
4295 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
4296 snd_soc_dapm_set_bias_level(dapm
,
4297 SND_SOC_BIAS_STANDBY
);
4300 mutex_unlock(&card
->dapm_mutex
);
4304 * snd_soc_dapm_shutdown - callback for system shutdown
4306 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
4308 struct snd_soc_dapm_context
*dapm
;
4310 list_for_each_entry(dapm
, &card
->dapm_list
, list
) {
4311 if (dapm
!= &card
->dapm
) {
4312 soc_dapm_shutdown_dapm(dapm
);
4313 if (dapm
->bias_level
== SND_SOC_BIAS_STANDBY
)
4314 snd_soc_dapm_set_bias_level(dapm
,
4319 soc_dapm_shutdown_dapm(&card
->dapm
);
4320 if (card
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
4321 snd_soc_dapm_set_bias_level(&card
->dapm
,
4325 /* Module information */
4326 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4327 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4328 MODULE_LICENSE("GPL");