1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
5 // Copyright 2005 Wolfson Microelectronics PLC.
6 // Author: Liam Girdwood <lrg@slimlogic.co.uk>
9 // o Changes power status of internal codec blocks depending on the
10 // dynamic configuration of codec internal audio paths and active
12 // o Platform power domain - can support external components i.e. amps and
13 // mic/headphone insertion events.
14 // o Automatic Mic Bias support
15 // o Jack insertion power event initiation - e.g. hp insertion will enable
17 // o Delayed power down of audio subsystem to reduce pops between a quick
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/async.h>
23 #include <linux/delay.h>
25 #include <linux/bitops.h>
26 #include <linux/platform_device.h>
27 #include <linux/jiffies.h>
28 #include <linux/debugfs.h>
29 #include <linux/pm_runtime.h>
30 #include <linux/regulator/consumer.h>
31 #include <linux/pinctrl/consumer.h>
32 #include <linux/clk.h>
33 #include <linux/slab.h>
34 #include <sound/core.h>
35 #include <sound/pcm.h>
36 #include <sound/pcm_params.h>
37 #include <sound/soc.h>
38 #include <sound/initval.h>
40 #include <trace/events/asoc.h>
42 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
44 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
45 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
47 #define snd_soc_dapm_for_each_direction(dir) \
48 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
51 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
52 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
54 int (*connected
)(struct snd_soc_dapm_widget
*source
,
55 struct snd_soc_dapm_widget
*sink
));
57 struct snd_soc_dapm_widget
*
58 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
59 const struct snd_soc_dapm_widget
*widget
);
61 struct snd_soc_dapm_widget
*
62 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context
*dapm
,
63 const struct snd_soc_dapm_widget
*widget
);
65 /* dapm power sequences - make this per codec in the future */
66 static int dapm_up_seq
[] = {
67 [snd_soc_dapm_pre
] = 1,
68 [snd_soc_dapm_regulator_supply
] = 2,
69 [snd_soc_dapm_pinctrl
] = 2,
70 [snd_soc_dapm_clock_supply
] = 2,
71 [snd_soc_dapm_supply
] = 3,
72 [snd_soc_dapm_micbias
] = 4,
73 [snd_soc_dapm_vmid
] = 4,
74 [snd_soc_dapm_dai_link
] = 3,
75 [snd_soc_dapm_dai_in
] = 5,
76 [snd_soc_dapm_dai_out
] = 5,
77 [snd_soc_dapm_aif_in
] = 5,
78 [snd_soc_dapm_aif_out
] = 5,
79 [snd_soc_dapm_mic
] = 6,
80 [snd_soc_dapm_siggen
] = 6,
81 [snd_soc_dapm_input
] = 6,
82 [snd_soc_dapm_output
] = 6,
83 [snd_soc_dapm_mux
] = 7,
84 [snd_soc_dapm_demux
] = 7,
85 [snd_soc_dapm_dac
] = 8,
86 [snd_soc_dapm_switch
] = 9,
87 [snd_soc_dapm_mixer
] = 9,
88 [snd_soc_dapm_mixer_named_ctl
] = 9,
89 [snd_soc_dapm_pga
] = 10,
90 [snd_soc_dapm_buffer
] = 10,
91 [snd_soc_dapm_scheduler
] = 10,
92 [snd_soc_dapm_effect
] = 10,
93 [snd_soc_dapm_src
] = 10,
94 [snd_soc_dapm_asrc
] = 10,
95 [snd_soc_dapm_encoder
] = 10,
96 [snd_soc_dapm_decoder
] = 10,
97 [snd_soc_dapm_adc
] = 11,
98 [snd_soc_dapm_out_drv
] = 12,
99 [snd_soc_dapm_hp
] = 12,
100 [snd_soc_dapm_spk
] = 12,
101 [snd_soc_dapm_line
] = 12,
102 [snd_soc_dapm_sink
] = 12,
103 [snd_soc_dapm_kcontrol
] = 13,
104 [snd_soc_dapm_post
] = 14,
107 static int dapm_down_seq
[] = {
108 [snd_soc_dapm_pre
] = 1,
109 [snd_soc_dapm_kcontrol
] = 2,
110 [snd_soc_dapm_adc
] = 3,
111 [snd_soc_dapm_hp
] = 4,
112 [snd_soc_dapm_spk
] = 4,
113 [snd_soc_dapm_line
] = 4,
114 [snd_soc_dapm_out_drv
] = 4,
115 [snd_soc_dapm_sink
] = 4,
116 [snd_soc_dapm_pga
] = 5,
117 [snd_soc_dapm_buffer
] = 5,
118 [snd_soc_dapm_scheduler
] = 5,
119 [snd_soc_dapm_effect
] = 5,
120 [snd_soc_dapm_src
] = 5,
121 [snd_soc_dapm_asrc
] = 5,
122 [snd_soc_dapm_encoder
] = 5,
123 [snd_soc_dapm_decoder
] = 5,
124 [snd_soc_dapm_switch
] = 6,
125 [snd_soc_dapm_mixer_named_ctl
] = 6,
126 [snd_soc_dapm_mixer
] = 6,
127 [snd_soc_dapm_dac
] = 7,
128 [snd_soc_dapm_mic
] = 8,
129 [snd_soc_dapm_siggen
] = 8,
130 [snd_soc_dapm_input
] = 8,
131 [snd_soc_dapm_output
] = 8,
132 [snd_soc_dapm_micbias
] = 9,
133 [snd_soc_dapm_vmid
] = 9,
134 [snd_soc_dapm_mux
] = 10,
135 [snd_soc_dapm_demux
] = 10,
136 [snd_soc_dapm_aif_in
] = 11,
137 [snd_soc_dapm_aif_out
] = 11,
138 [snd_soc_dapm_dai_in
] = 11,
139 [snd_soc_dapm_dai_out
] = 11,
140 [snd_soc_dapm_dai_link
] = 12,
141 [snd_soc_dapm_supply
] = 13,
142 [snd_soc_dapm_clock_supply
] = 14,
143 [snd_soc_dapm_pinctrl
] = 14,
144 [snd_soc_dapm_regulator_supply
] = 14,
145 [snd_soc_dapm_post
] = 15,
148 static void dapm_assert_locked(struct snd_soc_dapm_context
*dapm
)
150 if (dapm
->card
&& dapm
->card
->instantiated
)
151 lockdep_assert_held(&dapm
->card
->dapm_mutex
);
154 static void pop_wait(u32 pop_time
)
157 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
161 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
169 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
174 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
175 dev_info(dev
, "%s", buf
);
181 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
183 return !list_empty(&w
->dirty
);
186 static void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
188 dapm_assert_locked(w
->dapm
);
190 if (!dapm_dirty_widget(w
)) {
191 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
193 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
198 * Common implementation for dapm_widget_invalidate_input_paths() and
199 * dapm_widget_invalidate_output_paths(). The function is inlined since the
200 * combined size of the two specialized functions is only marginally larger then
201 * the size of the generic function and at the same time the fast path of the
202 * specialized functions is significantly smaller than the generic function.
204 static __always_inline
void dapm_widget_invalidate_paths(
205 struct snd_soc_dapm_widget
*w
, enum snd_soc_dapm_direction dir
)
207 enum snd_soc_dapm_direction rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
208 struct snd_soc_dapm_widget
*node
;
209 struct snd_soc_dapm_path
*p
;
212 dapm_assert_locked(w
->dapm
);
214 if (w
->endpoints
[dir
] == -1)
217 list_add_tail(&w
->work_list
, &list
);
218 w
->endpoints
[dir
] = -1;
220 list_for_each_entry(w
, &list
, work_list
) {
221 snd_soc_dapm_widget_for_each_path(w
, dir
, p
) {
222 if (p
->is_supply
|| p
->weak
|| !p
->connect
)
224 node
= p
->node
[rdir
];
225 if (node
->endpoints
[dir
] != -1) {
226 node
->endpoints
[dir
] = -1;
227 list_add_tail(&node
->work_list
, &list
);
234 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
236 * @w: The widget for which to invalidate the cached number of input paths
238 * Resets the cached number of inputs for the specified widget and all widgets
239 * that can be reached via outcoming paths from the widget.
241 * This function must be called if the number of output paths for a widget might
242 * have changed. E.g. if the source state of a widget changes or a path is added
243 * or activated with the widget as the sink.
245 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget
*w
)
247 dapm_widget_invalidate_paths(w
, SND_SOC_DAPM_DIR_IN
);
251 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
253 * @w: The widget for which to invalidate the cached number of output paths
255 * Resets the cached number of outputs for the specified widget and all widgets
256 * that can be reached via incoming paths from the widget.
258 * This function must be called if the number of output paths for a widget might
259 * have changed. E.g. if the sink state of a widget changes or a path is added
260 * or activated with the widget as the source.
262 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget
*w
)
264 dapm_widget_invalidate_paths(w
, SND_SOC_DAPM_DIR_OUT
);
268 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
269 * for the widgets connected to a path
270 * @p: The path to invalidate
272 * Resets the cached number of inputs for the sink of the path and the cached
273 * number of outputs for the source of the path.
275 * This function must be called when a path is added, removed or the connected
278 static void dapm_path_invalidate(struct snd_soc_dapm_path
*p
)
281 * Weak paths or supply paths do not influence the number of input or
282 * output paths of their neighbors.
284 if (p
->weak
|| p
->is_supply
)
288 * The number of connected endpoints is the sum of the number of
289 * connected endpoints of all neighbors. If a node with 0 connected
290 * endpoints is either connected or disconnected that sum won't change,
291 * so there is no need to re-check the path.
293 if (p
->source
->endpoints
[SND_SOC_DAPM_DIR_IN
] != 0)
294 dapm_widget_invalidate_input_paths(p
->sink
);
295 if (p
->sink
->endpoints
[SND_SOC_DAPM_DIR_OUT
] != 0)
296 dapm_widget_invalidate_output_paths(p
->source
);
299 void dapm_mark_endpoints_dirty(struct snd_soc_card
*card
)
301 struct snd_soc_dapm_widget
*w
;
303 mutex_lock(&card
->dapm_mutex
);
305 for_each_card_widgets(card
, w
) {
307 dapm_mark_dirty(w
, "Rechecking endpoints");
308 if (w
->is_ep
& SND_SOC_DAPM_EP_SINK
)
309 dapm_widget_invalidate_output_paths(w
);
310 if (w
->is_ep
& SND_SOC_DAPM_EP_SOURCE
)
311 dapm_widget_invalidate_input_paths(w
);
315 mutex_unlock(&card
->dapm_mutex
);
317 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty
);
319 /* create a new dapm widget */
320 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
321 const struct snd_soc_dapm_widget
*_widget
)
323 struct snd_soc_dapm_widget
*w
;
325 w
= kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
330 * w->name is duplicated in caller, but w->sname isn't.
331 * Duplicate it here if defined
333 if (_widget
->sname
) {
334 w
->sname
= kstrdup_const(_widget
->sname
, GFP_KERNEL
);
343 struct dapm_kcontrol_data
{
345 struct snd_soc_dapm_widget
*widget
;
346 struct list_head paths
;
347 struct snd_soc_dapm_widget_list
*wlist
;
350 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget
*widget
,
351 struct snd_kcontrol
*kcontrol
, const char *ctrl_name
)
353 struct dapm_kcontrol_data
*data
;
354 struct soc_mixer_control
*mc
;
359 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
363 INIT_LIST_HEAD(&data
->paths
);
365 switch (widget
->id
) {
366 case snd_soc_dapm_switch
:
367 case snd_soc_dapm_mixer
:
368 case snd_soc_dapm_mixer_named_ctl
:
369 mc
= (struct soc_mixer_control
*)kcontrol
->private_value
;
371 if (mc
->autodisable
&& snd_soc_volsw_is_stereo(mc
))
372 dev_warn(widget
->dapm
->dev
,
373 "ASoC: Unsupported stereo autodisable control '%s'\n",
376 if (mc
->autodisable
) {
377 struct snd_soc_dapm_widget
template;
379 name
= kasprintf(GFP_KERNEL
, "%s %s", ctrl_name
,
386 memset(&template, 0, sizeof(template));
387 template.reg
= mc
->reg
;
388 template.mask
= (1 << fls(mc
->max
)) - 1;
389 template.shift
= mc
->shift
;
391 template.off_val
= mc
->max
;
393 template.off_val
= 0;
394 template.on_val
= template.off_val
;
395 template.id
= snd_soc_dapm_kcontrol
;
396 template.name
= name
;
398 data
->value
= template.on_val
;
401 snd_soc_dapm_new_control_unlocked(widget
->dapm
,
404 if (IS_ERR(data
->widget
)) {
405 ret
= PTR_ERR(data
->widget
);
410 case snd_soc_dapm_demux
:
411 case snd_soc_dapm_mux
:
412 e
= (struct soc_enum
*)kcontrol
->private_value
;
414 if (e
->autodisable
) {
415 struct snd_soc_dapm_widget
template;
417 name
= kasprintf(GFP_KERNEL
, "%s %s", ctrl_name
,
424 memset(&template, 0, sizeof(template));
425 template.reg
= e
->reg
;
426 template.mask
= e
->mask
;
427 template.shift
= e
->shift_l
;
428 template.off_val
= snd_soc_enum_item_to_val(e
, 0);
429 template.on_val
= template.off_val
;
430 template.id
= snd_soc_dapm_kcontrol
;
431 template.name
= name
;
433 data
->value
= template.on_val
;
435 data
->widget
= snd_soc_dapm_new_control_unlocked(
436 widget
->dapm
, &template);
438 if (IS_ERR(data
->widget
)) {
439 ret
= PTR_ERR(data
->widget
);
443 snd_soc_dapm_add_path(widget
->dapm
, data
->widget
,
451 kcontrol
->private_data
= data
;
460 static void dapm_kcontrol_free(struct snd_kcontrol
*kctl
)
462 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kctl
);
464 list_del(&data
->paths
);
469 static struct snd_soc_dapm_widget_list
*dapm_kcontrol_get_wlist(
470 const struct snd_kcontrol
*kcontrol
)
472 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
477 static int dapm_kcontrol_add_widget(struct snd_kcontrol
*kcontrol
,
478 struct snd_soc_dapm_widget
*widget
)
480 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
481 struct snd_soc_dapm_widget_list
*new_wlist
;
485 n
= data
->wlist
->num_widgets
+ 1;
489 new_wlist
= krealloc(data
->wlist
,
490 struct_size(new_wlist
, widgets
, n
),
495 new_wlist
->widgets
[n
- 1] = widget
;
496 new_wlist
->num_widgets
= n
;
498 data
->wlist
= new_wlist
;
503 static void dapm_kcontrol_add_path(const struct snd_kcontrol
*kcontrol
,
504 struct snd_soc_dapm_path
*path
)
506 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
508 list_add_tail(&path
->list_kcontrol
, &data
->paths
);
511 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol
*kcontrol
)
513 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
518 return data
->widget
->power
;
521 static struct list_head
*dapm_kcontrol_get_path_list(
522 const struct snd_kcontrol
*kcontrol
)
524 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
529 #define dapm_kcontrol_for_each_path(path, kcontrol) \
530 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
533 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol
*kcontrol
)
535 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
539 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value
);
541 static bool dapm_kcontrol_set_value(const struct snd_kcontrol
*kcontrol
,
544 struct dapm_kcontrol_data
*data
= snd_kcontrol_chip(kcontrol
);
546 if (data
->value
== value
)
550 switch (dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0]->id
) {
551 case snd_soc_dapm_switch
:
552 case snd_soc_dapm_mixer
:
553 case snd_soc_dapm_mixer_named_ctl
:
554 data
->widget
->on_val
= value
& data
->widget
->mask
;
556 case snd_soc_dapm_demux
:
557 case snd_soc_dapm_mux
:
558 data
->widget
->on_val
= value
>> data
->widget
->shift
;
561 data
->widget
->on_val
= value
;
572 * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a
574 * @kcontrol: The kcontrol
576 struct snd_soc_dapm_widget
*snd_soc_dapm_kcontrol_widget(
577 struct snd_kcontrol
*kcontrol
)
579 return dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0];
581 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget
);
584 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
586 * @kcontrol: The kcontrol
588 * Note: This function must only be used on kcontrols that are known to have
589 * been registered for a CODEC. Otherwise the behaviour is undefined.
591 struct snd_soc_dapm_context
*snd_soc_dapm_kcontrol_dapm(
592 struct snd_kcontrol
*kcontrol
)
594 return dapm_kcontrol_get_wlist(kcontrol
)->widgets
[0]->dapm
;
596 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm
);
598 static void dapm_reset(struct snd_soc_card
*card
)
600 struct snd_soc_dapm_widget
*w
;
602 lockdep_assert_held(&card
->dapm_mutex
);
604 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
606 for_each_card_widgets(card
, w
) {
607 w
->new_power
= w
->power
;
608 w
->power_checked
= false;
612 static const char *soc_dapm_prefix(struct snd_soc_dapm_context
*dapm
)
614 if (!dapm
->component
)
616 return dapm
->component
->name_prefix
;
619 static int soc_dapm_read(struct snd_soc_dapm_context
*dapm
, int reg
,
622 if (!dapm
->component
)
624 return snd_soc_component_read(dapm
->component
, reg
, value
);
627 static int soc_dapm_update_bits(struct snd_soc_dapm_context
*dapm
,
628 int reg
, unsigned int mask
, unsigned int value
)
630 if (!dapm
->component
)
632 return snd_soc_component_update_bits(dapm
->component
, reg
,
636 static int soc_dapm_test_bits(struct snd_soc_dapm_context
*dapm
,
637 int reg
, unsigned int mask
, unsigned int value
)
639 if (!dapm
->component
)
641 return snd_soc_component_test_bits(dapm
->component
, reg
, mask
, value
);
644 static void soc_dapm_async_complete(struct snd_soc_dapm_context
*dapm
)
647 snd_soc_component_async_complete(dapm
->component
);
650 static struct snd_soc_dapm_widget
*
651 dapm_wcache_lookup(struct snd_soc_dapm_wcache
*wcache
, const char *name
)
653 struct snd_soc_dapm_widget
*w
= wcache
->widget
;
654 struct list_head
*wlist
;
659 wlist
= &w
->dapm
->card
->widgets
;
661 list_for_each_entry_from(w
, wlist
, list
) {
662 if (!strcmp(name
, w
->name
))
673 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache
*wcache
,
674 struct snd_soc_dapm_widget
*w
)
680 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
681 * @dapm: The DAPM context for which to set the level
682 * @level: The level to set
684 * Forces the DAPM bias level to a specific state. It will call the bias level
685 * callback of DAPM context with the specified level. This will even happen if
686 * the context is already at the same level. Furthermore it will not go through
687 * the normal bias level sequencing, meaning any intermediate states between the
688 * current and the target state will not be entered.
690 * Note that the change in bias level is only temporary and the next time
691 * snd_soc_dapm_sync() is called the state will be set to the level as
692 * determined by the DAPM core. The function is mainly intended to be used to
693 * used during probe or resume from suspend to power up the device so
694 * initialization can be done, before the DAPM core takes over.
696 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context
*dapm
,
697 enum snd_soc_bias_level level
)
702 ret
= snd_soc_component_set_bias_level(dapm
->component
, level
);
705 dapm
->bias_level
= level
;
709 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level
);
712 * snd_soc_dapm_set_bias_level - set the bias level for the system
713 * @dapm: DAPM context
714 * @level: level to configure
716 * Configure the bias (power) levels for the SoC audio device.
718 * Returns 0 for success else error.
720 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
721 enum snd_soc_bias_level level
)
723 struct snd_soc_card
*card
= dapm
->card
;
726 trace_snd_soc_bias_level_start(card
, level
);
728 ret
= snd_soc_card_set_bias_level(card
, dapm
, level
);
732 if (!card
|| dapm
!= &card
->dapm
)
733 ret
= snd_soc_dapm_force_bias_level(dapm
, level
);
738 ret
= snd_soc_card_set_bias_level_post(card
, dapm
, level
);
740 trace_snd_soc_bias_level_done(card
, level
);
745 /* connect mux widget to its interconnecting audio paths */
746 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
747 struct snd_soc_dapm_path
*path
, const char *control_name
,
748 struct snd_soc_dapm_widget
*w
)
750 const struct snd_kcontrol_new
*kcontrol
= &w
->kcontrol_news
[0];
751 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
752 unsigned int val
, item
;
755 if (e
->reg
!= SND_SOC_NOPM
) {
756 soc_dapm_read(dapm
, e
->reg
, &val
);
757 val
= (val
>> e
->shift_l
) & e
->mask
;
758 item
= snd_soc_enum_val_to_item(e
, val
);
760 /* since a virtual mux has no backing registers to
761 * decide which path to connect, it will try to match
762 * with the first enumeration. This is to ensure
763 * that the default mux choice (the first) will be
764 * correctly powered up during initialization.
769 i
= match_string(e
->texts
, e
->items
, control_name
);
773 path
->name
= e
->texts
[i
];
774 path
->connect
= (i
== item
);
779 /* set up initial codec paths */
780 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path
*p
, int i
,
783 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
784 p
->sink
->kcontrol_news
[i
].private_value
;
785 unsigned int reg
= mc
->reg
;
786 unsigned int shift
= mc
->shift
;
787 unsigned int max
= mc
->max
;
788 unsigned int mask
= (1 << fls(max
)) - 1;
789 unsigned int invert
= mc
->invert
;
792 if (reg
!= SND_SOC_NOPM
) {
793 soc_dapm_read(p
->sink
->dapm
, reg
, &val
);
795 * The nth_path argument allows this function to know
796 * which path of a kcontrol it is setting the initial
797 * status for. Ideally this would support any number
798 * of paths and channels. But since kcontrols only come
799 * in mono and stereo variants, we are limited to 2
802 * The following code assumes for stereo controls the
803 * first path is the left channel, and all remaining
804 * paths are the right channel.
806 if (snd_soc_volsw_is_stereo(mc
) && nth_path
> 0) {
808 soc_dapm_read(p
->sink
->dapm
, mc
->rreg
, &val
);
809 val
= (val
>> mc
->rshift
) & mask
;
811 val
= (val
>> shift
) & mask
;
817 /* since a virtual mixer has no backing registers to
818 * decide which path to connect, it will try to match
819 * with initial state. This is to ensure
820 * that the default mixer choice will be
821 * correctly powered up during initialization.
827 /* connect mixer widget to its interconnecting audio paths */
828 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
829 struct snd_soc_dapm_path
*path
, const char *control_name
)
833 /* search for mixer kcontrol */
834 for (i
= 0; i
< path
->sink
->num_kcontrols
; i
++) {
835 if (!strcmp(control_name
, path
->sink
->kcontrol_news
[i
].name
)) {
836 path
->name
= path
->sink
->kcontrol_news
[i
].name
;
837 dapm_set_mixer_path_status(path
, i
, nth_path
++);
844 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
845 struct snd_soc_dapm_widget
*kcontrolw
,
846 const struct snd_kcontrol_new
*kcontrol_new
,
847 struct snd_kcontrol
**kcontrol
)
849 struct snd_soc_dapm_widget
*w
;
854 for_each_card_widgets(dapm
->card
, w
) {
855 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
857 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
858 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
860 *kcontrol
= w
->kcontrols
[i
];
870 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
871 * create it. Either way, add the widget into the control's widget list
873 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget
*w
,
876 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
877 struct snd_card
*card
= dapm
->card
->snd_card
;
881 struct snd_kcontrol
*kcontrol
;
882 bool wname_in_long_name
, kcname_in_long_name
;
883 char *long_name
= NULL
;
887 prefix
= soc_dapm_prefix(dapm
);
889 prefix_len
= strlen(prefix
) + 1;
893 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[kci
],
898 wname_in_long_name
= false;
899 kcname_in_long_name
= true;
902 case snd_soc_dapm_switch
:
903 case snd_soc_dapm_mixer
:
904 case snd_soc_dapm_pga
:
905 case snd_soc_dapm_effect
:
906 case snd_soc_dapm_out_drv
:
907 wname_in_long_name
= true;
908 kcname_in_long_name
= true;
910 case snd_soc_dapm_mixer_named_ctl
:
911 wname_in_long_name
= false;
912 kcname_in_long_name
= true;
914 case snd_soc_dapm_demux
:
915 case snd_soc_dapm_mux
:
916 wname_in_long_name
= true;
917 kcname_in_long_name
= false;
924 if (wname_in_long_name
&& kcname_in_long_name
) {
926 * The control will get a prefix from the control
927 * creation process but we're also using the same
928 * prefix for widgets so cut the prefix off the
929 * front of the widget name.
931 long_name
= kasprintf(GFP_KERNEL
, "%s %s",
932 w
->name
+ prefix_len
,
933 w
->kcontrol_news
[kci
].name
);
934 if (long_name
== NULL
)
938 } else if (wname_in_long_name
) {
940 name
= w
->name
+ prefix_len
;
943 name
= w
->kcontrol_news
[kci
].name
;
946 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[kci
], NULL
, name
,
953 kcontrol
->private_free
= dapm_kcontrol_free
;
955 ret
= dapm_kcontrol_data_alloc(w
, kcontrol
, name
);
957 snd_ctl_free_one(kcontrol
);
961 ret
= snd_ctl_add(card
, kcontrol
);
964 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
970 ret
= dapm_kcontrol_add_widget(kcontrol
, w
);
972 w
->kcontrols
[kci
] = kcontrol
;
980 /* create new dapm mixer control */
981 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
984 struct snd_soc_dapm_path
*path
;
985 struct dapm_kcontrol_data
*data
;
988 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
990 snd_soc_dapm_widget_for_each_source_path(w
, path
) {
991 /* mixer/mux paths name must match control name */
992 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
995 if (!w
->kcontrols
[i
]) {
996 ret
= dapm_create_or_share_kcontrol(w
, i
);
1001 dapm_kcontrol_add_path(w
->kcontrols
[i
], path
);
1003 data
= snd_kcontrol_chip(w
->kcontrols
[i
]);
1005 snd_soc_dapm_add_path(data
->widget
->dapm
,
1015 /* create new dapm mux control */
1016 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
1018 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1019 enum snd_soc_dapm_direction dir
;
1020 struct snd_soc_dapm_path
*path
;
1025 case snd_soc_dapm_mux
:
1026 dir
= SND_SOC_DAPM_DIR_OUT
;
1029 case snd_soc_dapm_demux
:
1030 dir
= SND_SOC_DAPM_DIR_IN
;
1037 if (w
->num_kcontrols
!= 1) {
1039 "ASoC: %s %s has incorrect number of controls\n", type
,
1044 if (list_empty(&w
->edges
[dir
])) {
1045 dev_err(dapm
->dev
, "ASoC: %s %s has no paths\n", type
, w
->name
);
1049 ret
= dapm_create_or_share_kcontrol(w
, 0);
1053 snd_soc_dapm_widget_for_each_path(w
, dir
, path
) {
1055 dapm_kcontrol_add_path(w
->kcontrols
[0], path
);
1061 /* create new dapm volume control */
1062 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
1066 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
1067 ret
= dapm_create_or_share_kcontrol(w
, i
);
1075 /* create new dapm dai link control */
1076 static int dapm_new_dai_link(struct snd_soc_dapm_widget
*w
)
1079 struct snd_kcontrol
*kcontrol
;
1080 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1081 struct snd_card
*card
= dapm
->card
->snd_card
;
1082 struct snd_soc_pcm_runtime
*rtd
= w
->priv
;
1084 /* create control for links with > 1 config */
1085 if (rtd
->dai_link
->num_params
<= 1)
1089 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
1090 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
], w
,
1092 ret
= snd_ctl_add(card
, kcontrol
);
1095 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1096 w
->name
, w
->kcontrol_news
[i
].name
, ret
);
1099 kcontrol
->private_data
= w
;
1100 w
->kcontrols
[i
] = kcontrol
;
1106 /* We implement power down on suspend by checking the power state of
1107 * the ALSA card - when we are suspending the ALSA state for the card
1110 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
1112 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
1115 case SNDRV_CTL_POWER_D3hot
:
1116 case SNDRV_CTL_POWER_D3cold
:
1117 if (widget
->ignore_suspend
)
1118 dev_dbg(widget
->dapm
->dev
, "ASoC: %s ignoring suspend\n",
1120 return widget
->ignore_suspend
;
1126 static void dapm_widget_list_free(struct snd_soc_dapm_widget_list
**list
)
1131 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list
**list
,
1132 struct list_head
*widgets
)
1134 struct snd_soc_dapm_widget
*w
;
1135 struct list_head
*it
;
1136 unsigned int size
= 0;
1139 list_for_each(it
, widgets
)
1142 *list
= kzalloc(struct_size(*list
, widgets
, size
), GFP_KERNEL
);
1146 list_for_each_entry(w
, widgets
, work_list
)
1147 (*list
)->widgets
[i
++] = w
;
1149 (*list
)->num_widgets
= i
;
1155 * Recursively reset the cached number of inputs or outputs for the specified
1156 * widget and all widgets that can be reached via incoming or outcoming paths
1159 static void invalidate_paths_ep(struct snd_soc_dapm_widget
*widget
,
1160 enum snd_soc_dapm_direction dir
)
1162 enum snd_soc_dapm_direction rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
1163 struct snd_soc_dapm_path
*path
;
1165 widget
->endpoints
[dir
] = -1;
1167 snd_soc_dapm_widget_for_each_path(widget
, rdir
, path
) {
1168 if (path
->weak
|| path
->is_supply
)
1174 if (path
->connect
) {
1176 invalidate_paths_ep(path
->node
[dir
], dir
);
1183 * Common implementation for is_connected_output_ep() and
1184 * is_connected_input_ep(). The function is inlined since the combined size of
1185 * the two specialized functions is only marginally larger then the size of the
1186 * generic function and at the same time the fast path of the specialized
1187 * functions is significantly smaller than the generic function.
1189 static __always_inline
int is_connected_ep(struct snd_soc_dapm_widget
*widget
,
1190 struct list_head
*list
, enum snd_soc_dapm_direction dir
,
1191 int (*fn
)(struct snd_soc_dapm_widget
*, struct list_head
*,
1192 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1193 enum snd_soc_dapm_direction
)),
1194 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1195 enum snd_soc_dapm_direction
))
1197 enum snd_soc_dapm_direction rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
1198 struct snd_soc_dapm_path
*path
;
1201 if (widget
->endpoints
[dir
] >= 0)
1202 return widget
->endpoints
[dir
];
1204 DAPM_UPDATE_STAT(widget
, path_checks
);
1206 /* do we need to add this widget to the list ? */
1208 list_add_tail(&widget
->work_list
, list
);
1210 if (custom_stop_condition
&& custom_stop_condition(widget
, dir
)) {
1212 custom_stop_condition
= NULL
;
1215 if ((widget
->is_ep
& SND_SOC_DAPM_DIR_TO_EP(dir
)) && widget
->connected
) {
1216 widget
->endpoints
[dir
] = snd_soc_dapm_suspend_check(widget
);
1217 return widget
->endpoints
[dir
];
1220 snd_soc_dapm_widget_for_each_path(widget
, rdir
, path
) {
1221 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
1223 if (path
->weak
|| path
->is_supply
)
1229 trace_snd_soc_dapm_path(widget
, dir
, path
);
1231 if (path
->connect
) {
1233 con
+= fn(path
->node
[dir
], list
, custom_stop_condition
);
1238 widget
->endpoints
[dir
] = con
;
1244 * Recursively check for a completed path to an active or physically connected
1245 * output widget. Returns number of complete paths.
1247 * Optionally, can be supplied with a function acting as a stopping condition.
1248 * This function takes the dapm widget currently being examined and the walk
1249 * direction as an arguments, it should return true if widgets from that point
1250 * in the graph onwards should not be added to the widget list.
1252 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
1253 struct list_head
*list
,
1254 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*i
,
1255 enum snd_soc_dapm_direction
))
1257 return is_connected_ep(widget
, list
, SND_SOC_DAPM_DIR_OUT
,
1258 is_connected_output_ep
, custom_stop_condition
);
1262 * Recursively check for a completed path to an active or physically connected
1263 * input widget. Returns number of complete paths.
1265 * Optionally, can be supplied with a function acting as a stopping condition.
1266 * This function takes the dapm widget currently being examined and the walk
1267 * direction as an arguments, it should return true if the walk should be
1268 * stopped and false otherwise.
1270 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
1271 struct list_head
*list
,
1272 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*i
,
1273 enum snd_soc_dapm_direction
))
1275 return is_connected_ep(widget
, list
, SND_SOC_DAPM_DIR_IN
,
1276 is_connected_input_ep
, custom_stop_condition
);
1280 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1281 * @dai: the soc DAI.
1282 * @stream: stream direction.
1283 * @list: list of active widgets for this stream.
1284 * @custom_stop_condition: (optional) a function meant to stop the widget graph
1285 * walk based on custom logic.
1287 * Queries DAPM graph as to whether a valid audio stream path exists for
1288 * the initial stream specified by name. This takes into account
1289 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1291 * Optionally, can be supplied with a function acting as a stopping condition.
1292 * This function takes the dapm widget currently being examined and the walk
1293 * direction as an arguments, it should return true if the walk should be
1294 * stopped and false otherwise.
1296 * Returns the number of valid paths or negative error.
1298 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
1299 struct snd_soc_dapm_widget_list
**list
,
1300 bool (*custom_stop_condition
)(struct snd_soc_dapm_widget
*,
1301 enum snd_soc_dapm_direction
))
1303 struct snd_soc_card
*card
= dai
->component
->card
;
1304 struct snd_soc_dapm_widget
*w
;
1309 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1311 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
1312 w
= dai
->playback_widget
;
1313 invalidate_paths_ep(w
, SND_SOC_DAPM_DIR_OUT
);
1314 paths
= is_connected_output_ep(w
, &widgets
,
1315 custom_stop_condition
);
1317 w
= dai
->capture_widget
;
1318 invalidate_paths_ep(w
, SND_SOC_DAPM_DIR_IN
);
1319 paths
= is_connected_input_ep(w
, &widgets
,
1320 custom_stop_condition
);
1323 /* Drop starting point */
1324 list_del(widgets
.next
);
1326 ret
= dapm_widget_list_create(list
, &widgets
);
1330 trace_snd_soc_dapm_connected(paths
, stream
);
1331 mutex_unlock(&card
->dapm_mutex
);
1336 void snd_soc_dapm_dai_free_widgets(struct snd_soc_dapm_widget_list
**list
)
1338 dapm_widget_list_free(list
);
1342 * Handler for regulator supply widget.
1344 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
1345 struct snd_kcontrol
*kcontrol
, int event
)
1349 soc_dapm_async_complete(w
->dapm
);
1351 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1352 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1353 ret
= regulator_allow_bypass(w
->regulator
, false);
1355 dev_warn(w
->dapm
->dev
,
1356 "ASoC: Failed to unbypass %s: %d\n",
1360 return regulator_enable(w
->regulator
);
1362 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
1363 ret
= regulator_allow_bypass(w
->regulator
, true);
1365 dev_warn(w
->dapm
->dev
,
1366 "ASoC: Failed to bypass %s: %d\n",
1370 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1373 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1376 * Handler for pinctrl widget.
1378 int dapm_pinctrl_event(struct snd_soc_dapm_widget
*w
,
1379 struct snd_kcontrol
*kcontrol
, int event
)
1381 struct snd_soc_dapm_pinctrl_priv
*priv
= w
->priv
;
1382 struct pinctrl
*p
= w
->pinctrl
;
1383 struct pinctrl_state
*s
;
1388 if (SND_SOC_DAPM_EVENT_ON(event
))
1389 s
= pinctrl_lookup_state(p
, priv
->active_state
);
1391 s
= pinctrl_lookup_state(p
, priv
->sleep_state
);
1396 return pinctrl_select_state(p
, s
);
1398 EXPORT_SYMBOL_GPL(dapm_pinctrl_event
);
1401 * Handler for clock supply widget.
1403 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1404 struct snd_kcontrol
*kcontrol
, int event
)
1409 soc_dapm_async_complete(w
->dapm
);
1411 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1412 return clk_prepare_enable(w
->clk
);
1414 clk_disable_unprepare(w
->clk
);
1420 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1422 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1424 if (w
->power_checked
)
1425 return w
->new_power
;
1430 w
->new_power
= w
->power_check(w
);
1432 w
->power_checked
= true;
1434 return w
->new_power
;
1437 /* Generic check to see if a widget should be powered. */
1438 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1442 DAPM_UPDATE_STAT(w
, power_checks
);
1444 in
= is_connected_input_ep(w
, NULL
, NULL
);
1445 out
= is_connected_output_ep(w
, NULL
, NULL
);
1446 return out
!= 0 && in
!= 0;
1449 /* Check to see if a power supply is needed */
1450 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1452 struct snd_soc_dapm_path
*path
;
1454 DAPM_UPDATE_STAT(w
, power_checks
);
1456 /* Check if one of our outputs is connected */
1457 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
1458 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1463 if (path
->connected
&&
1464 !path
->connected(path
->source
, path
->sink
))
1467 if (dapm_widget_power_check(path
->sink
))
1474 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1476 return w
->connected
;
1479 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1480 struct snd_soc_dapm_widget
*b
,
1485 BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq
) != SND_SOC_DAPM_TYPE_COUNT
);
1486 BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq
) != SND_SOC_DAPM_TYPE_COUNT
);
1491 sort
= dapm_down_seq
;
1493 WARN_ONCE(sort
[a
->id
] == 0, "offset a->id %d not initialized\n", a
->id
);
1494 WARN_ONCE(sort
[b
->id
] == 0, "offset b->id %d not initialized\n", b
->id
);
1496 if (sort
[a
->id
] != sort
[b
->id
])
1497 return sort
[a
->id
] - sort
[b
->id
];
1498 if (a
->subseq
!= b
->subseq
) {
1500 return a
->subseq
- b
->subseq
;
1502 return b
->subseq
- a
->subseq
;
1504 if (a
->reg
!= b
->reg
)
1505 return a
->reg
- b
->reg
;
1506 if (a
->dapm
!= b
->dapm
)
1507 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1512 /* Insert a widget in order into a DAPM power sequence. */
1513 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1514 struct list_head
*list
,
1517 struct snd_soc_dapm_widget
*w
;
1519 list_for_each_entry(w
, list
, power_list
)
1520 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1521 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1525 list_add_tail(&new_widget
->power_list
, list
);
1528 static void dapm_seq_check_event(struct snd_soc_card
*card
,
1529 struct snd_soc_dapm_widget
*w
, int event
)
1531 const char *ev_name
;
1535 case SND_SOC_DAPM_PRE_PMU
:
1536 ev_name
= "PRE_PMU";
1539 case SND_SOC_DAPM_POST_PMU
:
1540 ev_name
= "POST_PMU";
1543 case SND_SOC_DAPM_PRE_PMD
:
1544 ev_name
= "PRE_PMD";
1547 case SND_SOC_DAPM_POST_PMD
:
1548 ev_name
= "POST_PMD";
1551 case SND_SOC_DAPM_WILL_PMU
:
1552 ev_name
= "WILL_PMU";
1555 case SND_SOC_DAPM_WILL_PMD
:
1556 ev_name
= "WILL_PMD";
1560 WARN(1, "Unknown event %d\n", event
);
1564 if (w
->new_power
!= power
)
1567 if (w
->event
&& (w
->event_flags
& event
)) {
1568 pop_dbg(w
->dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1570 soc_dapm_async_complete(w
->dapm
);
1571 trace_snd_soc_dapm_widget_event_start(w
, event
);
1572 ret
= w
->event(w
, NULL
, event
);
1573 trace_snd_soc_dapm_widget_event_done(w
, event
);
1575 dev_err(w
->dapm
->dev
, "ASoC: %s: %s event failed: %d\n",
1576 ev_name
, w
->name
, ret
);
1580 /* Apply the coalesced changes from a DAPM sequence */
1581 static void dapm_seq_run_coalesced(struct snd_soc_card
*card
,
1582 struct list_head
*pending
)
1584 struct snd_soc_dapm_context
*dapm
;
1585 struct snd_soc_dapm_widget
*w
;
1587 unsigned int value
= 0;
1588 unsigned int mask
= 0;
1590 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
, power_list
);
1594 list_for_each_entry(w
, pending
, power_list
) {
1595 WARN_ON(reg
!= w
->reg
|| dapm
!= w
->dapm
);
1596 w
->power
= w
->new_power
;
1598 mask
|= w
->mask
<< w
->shift
;
1600 value
|= w
->on_val
<< w
->shift
;
1602 value
|= w
->off_val
<< w
->shift
;
1604 pop_dbg(dapm
->dev
, card
->pop_time
,
1605 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1606 w
->name
, reg
, value
, mask
);
1608 /* Check for events */
1609 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMU
);
1610 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_PRE_PMD
);
1614 /* Any widget will do, they should all be updating the
1618 pop_dbg(dapm
->dev
, card
->pop_time
,
1619 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1620 value
, mask
, reg
, card
->pop_time
);
1621 pop_wait(card
->pop_time
);
1622 soc_dapm_update_bits(dapm
, reg
, mask
, value
);
1625 list_for_each_entry(w
, pending
, power_list
) {
1626 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMU
);
1627 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_POST_PMD
);
1631 /* Apply a DAPM power sequence.
1633 * We walk over a pre-sorted list of widgets to apply power to. In
1634 * order to minimise the number of writes to the device required
1635 * multiple widgets will be updated in a single write where possible.
1636 * Currently anything that requires more than a single write is not
1639 static void dapm_seq_run(struct snd_soc_card
*card
,
1640 struct list_head
*list
, int event
, bool power_up
)
1642 struct snd_soc_dapm_widget
*w
, *n
;
1643 struct snd_soc_dapm_context
*d
;
1646 int cur_subseq
= -1;
1647 int cur_reg
= SND_SOC_NOPM
;
1648 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1655 sort
= dapm_down_seq
;
1657 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1660 /* Do we need to apply any queued changes? */
1661 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1662 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1663 if (!list_empty(&pending
))
1664 dapm_seq_run_coalesced(card
, &pending
);
1666 if (cur_dapm
&& cur_dapm
->component
) {
1667 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1668 if (sort
[i
] == cur_sort
)
1669 snd_soc_component_seq_notifier(
1670 cur_dapm
->component
,
1674 if (cur_dapm
&& w
->dapm
!= cur_dapm
)
1675 soc_dapm_async_complete(cur_dapm
);
1677 INIT_LIST_HEAD(&pending
);
1679 cur_subseq
= INT_MIN
;
1680 cur_reg
= SND_SOC_NOPM
;
1685 case snd_soc_dapm_pre
:
1687 list_for_each_entry_safe_continue(w
, n
, list
,
1690 if (event
== SND_SOC_DAPM_STREAM_START
)
1692 NULL
, SND_SOC_DAPM_PRE_PMU
);
1693 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1695 NULL
, SND_SOC_DAPM_PRE_PMD
);
1698 case snd_soc_dapm_post
:
1700 list_for_each_entry_safe_continue(w
, n
, list
,
1703 if (event
== SND_SOC_DAPM_STREAM_START
)
1705 NULL
, SND_SOC_DAPM_POST_PMU
);
1706 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1708 NULL
, SND_SOC_DAPM_POST_PMD
);
1712 /* Queue it up for application */
1713 cur_sort
= sort
[w
->id
];
1714 cur_subseq
= w
->subseq
;
1717 list_move(&w
->power_list
, &pending
);
1722 dev_err(w
->dapm
->dev
,
1723 "ASoC: Failed to apply widget power: %d\n", ret
);
1726 if (!list_empty(&pending
))
1727 dapm_seq_run_coalesced(card
, &pending
);
1729 if (cur_dapm
&& cur_dapm
->component
) {
1730 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1731 if (sort
[i
] == cur_sort
)
1732 snd_soc_component_seq_notifier(
1733 cur_dapm
->component
,
1737 for_each_card_dapms(card
, d
)
1738 soc_dapm_async_complete(d
);
1741 static void dapm_widget_update(struct snd_soc_card
*card
)
1743 struct snd_soc_dapm_update
*update
= card
->update
;
1744 struct snd_soc_dapm_widget_list
*wlist
;
1745 struct snd_soc_dapm_widget
*w
= NULL
;
1749 if (!update
|| !dapm_kcontrol_is_powered(update
->kcontrol
))
1752 wlist
= dapm_kcontrol_get_wlist(update
->kcontrol
);
1754 for_each_dapm_widgets(wlist
, wi
, w
) {
1755 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1756 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1758 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM pre-event failed: %d\n",
1766 ret
= soc_dapm_update_bits(w
->dapm
, update
->reg
, update
->mask
,
1769 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM update failed: %d\n",
1772 if (update
->has_second_set
) {
1773 ret
= soc_dapm_update_bits(w
->dapm
, update
->reg2
,
1774 update
->mask2
, update
->val2
);
1776 dev_err(w
->dapm
->dev
,
1777 "ASoC: %s DAPM update failed: %d\n",
1781 for_each_dapm_widgets(wlist
, wi
, w
) {
1782 if (w
->event
&& (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1783 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1785 dev_err(w
->dapm
->dev
, "ASoC: %s DAPM post-event failed: %d\n",
1791 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1792 * they're changing state.
1794 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1796 struct snd_soc_dapm_context
*d
= data
;
1799 /* If we're off and we're not supposed to go into STANDBY */
1800 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1801 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1803 pm_runtime_get_sync(d
->dev
);
1805 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1808 "ASoC: Failed to turn on bias: %d\n", ret
);
1811 /* Prepare for a transition to ON or away from ON */
1812 if ((d
->target_bias_level
== SND_SOC_BIAS_ON
&&
1813 d
->bias_level
!= SND_SOC_BIAS_ON
) ||
1814 (d
->target_bias_level
!= SND_SOC_BIAS_ON
&&
1815 d
->bias_level
== SND_SOC_BIAS_ON
)) {
1816 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1819 "ASoC: Failed to prepare bias: %d\n", ret
);
1823 /* Async callback run prior to DAPM sequences - brings to their final
1826 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1828 struct snd_soc_dapm_context
*d
= data
;
1831 /* If we just powered the last thing off drop to standby bias */
1832 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1833 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1834 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1835 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1837 dev_err(d
->dev
, "ASoC: Failed to apply standby bias: %d\n",
1841 /* If we're in standby and can support bias off then do that */
1842 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1843 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1844 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1846 dev_err(d
->dev
, "ASoC: Failed to turn off bias: %d\n",
1850 pm_runtime_put(d
->dev
);
1853 /* If we just powered up then move to active bias */
1854 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1855 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1856 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1858 dev_err(d
->dev
, "ASoC: Failed to apply active bias: %d\n",
1863 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1864 bool power
, bool connect
)
1866 /* If a connection is being made or broken then that update
1867 * will have marked the peer dirty, otherwise the widgets are
1868 * not connected and this update has no impact. */
1872 /* If the peer is already in the state we're moving to then we
1873 * won't have an impact on it. */
1874 if (power
!= peer
->power
)
1875 dapm_mark_dirty(peer
, "peer state change");
1878 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1879 struct list_head
*up_list
,
1880 struct list_head
*down_list
)
1882 struct snd_soc_dapm_path
*path
;
1884 if (w
->power
== power
)
1887 trace_snd_soc_dapm_widget_power(w
, power
);
1889 /* If we changed our power state perhaps our neigbours changed
1892 snd_soc_dapm_widget_for_each_source_path(w
, path
)
1893 dapm_widget_set_peer_power(path
->source
, power
, path
->connect
);
1895 /* Supplies can't affect their outputs, only their inputs */
1896 if (!w
->is_supply
) {
1897 snd_soc_dapm_widget_for_each_sink_path(w
, path
)
1898 dapm_widget_set_peer_power(path
->sink
, power
,
1903 dapm_seq_insert(w
, up_list
, true);
1905 dapm_seq_insert(w
, down_list
, false);
1908 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1909 struct list_head
*up_list
,
1910 struct list_head
*down_list
)
1915 case snd_soc_dapm_pre
:
1916 dapm_seq_insert(w
, down_list
, false);
1918 case snd_soc_dapm_post
:
1919 dapm_seq_insert(w
, up_list
, true);
1923 power
= dapm_widget_power_check(w
);
1925 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1930 static bool dapm_idle_bias_off(struct snd_soc_dapm_context
*dapm
)
1932 if (dapm
->idle_bias_off
)
1935 switch (snd_power_get_state(dapm
->card
->snd_card
)) {
1936 case SNDRV_CTL_POWER_D3hot
:
1937 case SNDRV_CTL_POWER_D3cold
:
1938 return dapm
->suspend_bias_off
;
1947 * Scan each dapm widget for complete audio path.
1948 * A complete path is a route that has valid endpoints i.e.:-
1950 * o DAC to output pin.
1951 * o Input pin to ADC.
1952 * o Input pin to Output pin (bypass, sidetone)
1953 * o DAC to ADC (loopback).
1955 static int dapm_power_widgets(struct snd_soc_card
*card
, int event
)
1957 struct snd_soc_dapm_widget
*w
;
1958 struct snd_soc_dapm_context
*d
;
1960 LIST_HEAD(down_list
);
1961 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1962 enum snd_soc_bias_level bias
;
1965 lockdep_assert_held(&card
->dapm_mutex
);
1967 trace_snd_soc_dapm_start(card
);
1969 for_each_card_dapms(card
, d
) {
1970 if (dapm_idle_bias_off(d
))
1971 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1973 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1978 /* Check which widgets we need to power and store them in
1979 * lists indicating if they should be powered up or down. We
1980 * only check widgets that have been flagged as dirty but note
1981 * that new widgets may be added to the dirty list while we
1984 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1985 dapm_power_one_widget(w
, &up_list
, &down_list
);
1988 for_each_card_widgets(card
, w
) {
1990 case snd_soc_dapm_pre
:
1991 case snd_soc_dapm_post
:
1992 /* These widgets always need to be powered */
1995 list_del_init(&w
->dirty
);
2002 /* Supplies and micbiases only bring the
2003 * context up to STANDBY as unless something
2004 * else is active and passing audio they
2005 * generally don't require full power. Signal
2006 * generators are virtual pins and have no
2007 * power impact themselves.
2010 case snd_soc_dapm_siggen
:
2011 case snd_soc_dapm_vmid
:
2013 case snd_soc_dapm_supply
:
2014 case snd_soc_dapm_regulator_supply
:
2015 case snd_soc_dapm_pinctrl
:
2016 case snd_soc_dapm_clock_supply
:
2017 case snd_soc_dapm_micbias
:
2018 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
2019 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
2022 d
->target_bias_level
= SND_SOC_BIAS_ON
;
2029 /* Force all contexts in the card to the same bias state if
2030 * they're not ground referenced.
2032 bias
= SND_SOC_BIAS_OFF
;
2033 for_each_card_dapms(card
, d
)
2034 if (d
->target_bias_level
> bias
)
2035 bias
= d
->target_bias_level
;
2036 for_each_card_dapms(card
, d
)
2037 if (!dapm_idle_bias_off(d
))
2038 d
->target_bias_level
= bias
;
2040 trace_snd_soc_dapm_walk_done(card
);
2042 /* Run card bias changes at first */
2043 dapm_pre_sequence_async(&card
->dapm
, 0);
2044 /* Run other bias changes in parallel */
2045 for_each_card_dapms(card
, d
) {
2046 if (d
!= &card
->dapm
&& d
->bias_level
!= d
->target_bias_level
)
2047 async_schedule_domain(dapm_pre_sequence_async
, d
,
2050 async_synchronize_full_domain(&async_domain
);
2052 list_for_each_entry(w
, &down_list
, power_list
) {
2053 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMD
);
2056 list_for_each_entry(w
, &up_list
, power_list
) {
2057 dapm_seq_check_event(card
, w
, SND_SOC_DAPM_WILL_PMU
);
2060 /* Power down widgets first; try to avoid amplifying pops. */
2061 dapm_seq_run(card
, &down_list
, event
, false);
2063 dapm_widget_update(card
);
2066 dapm_seq_run(card
, &up_list
, event
, true);
2068 /* Run all the bias changes in parallel */
2069 for_each_card_dapms(card
, d
) {
2070 if (d
!= &card
->dapm
&& d
->bias_level
!= d
->target_bias_level
)
2071 async_schedule_domain(dapm_post_sequence_async
, d
,
2074 async_synchronize_full_domain(&async_domain
);
2075 /* Run card bias changes at last */
2076 dapm_post_sequence_async(&card
->dapm
, 0);
2078 /* do we need to notify any clients that DAPM event is complete */
2079 for_each_card_dapms(card
, d
) {
2083 ret
= snd_soc_component_stream_event(d
->component
, event
);
2088 pop_dbg(card
->dev
, card
->pop_time
,
2089 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
2090 pop_wait(card
->pop_time
);
2092 trace_snd_soc_dapm_done(card
);
2097 #ifdef CONFIG_DEBUG_FS
2098 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
2099 char __user
*user_buf
,
2100 size_t count
, loff_t
*ppos
)
2102 struct snd_soc_dapm_widget
*w
= file
->private_data
;
2103 struct snd_soc_card
*card
= w
->dapm
->card
;
2104 enum snd_soc_dapm_direction dir
, rdir
;
2108 struct snd_soc_dapm_path
*p
= NULL
;
2110 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
2114 mutex_lock(&card
->dapm_mutex
);
2116 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
2121 in
= is_connected_input_ep(w
, NULL
, NULL
);
2122 out
= is_connected_output_ep(w
, NULL
, NULL
);
2125 ret
= scnprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
2126 w
->name
, w
->power
? "On" : "Off",
2127 w
->force
? " (forced)" : "", in
, out
);
2130 ret
+= scnprintf(buf
+ ret
, PAGE_SIZE
- ret
,
2131 " - R%d(0x%x) mask 0x%x",
2132 w
->reg
, w
->reg
, w
->mask
<< w
->shift
);
2134 ret
+= scnprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
2137 ret
+= scnprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
2139 w
->active
? "active" : "inactive");
2141 snd_soc_dapm_for_each_direction(dir
) {
2142 rdir
= SND_SOC_DAPM_DIR_REVERSE(dir
);
2143 snd_soc_dapm_widget_for_each_path(w
, dir
, p
) {
2144 if (p
->connected
&& !p
->connected(p
->source
, p
->sink
))
2150 ret
+= scnprintf(buf
+ ret
, PAGE_SIZE
- ret
,
2151 " %s \"%s\" \"%s\"\n",
2152 (rdir
== SND_SOC_DAPM_DIR_IN
) ? "in" : "out",
2153 p
->name
? p
->name
: "static",
2154 p
->node
[rdir
]->name
);
2158 mutex_unlock(&card
->dapm_mutex
);
2160 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
2166 static const struct file_operations dapm_widget_power_fops
= {
2167 .open
= simple_open
,
2168 .read
= dapm_widget_power_read_file
,
2169 .llseek
= default_llseek
,
2172 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
2173 size_t count
, loff_t
*ppos
)
2175 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
2178 switch (dapm
->bias_level
) {
2179 case SND_SOC_BIAS_ON
:
2182 case SND_SOC_BIAS_PREPARE
:
2183 level
= "Prepare\n";
2185 case SND_SOC_BIAS_STANDBY
:
2186 level
= "Standby\n";
2188 case SND_SOC_BIAS_OFF
:
2192 WARN(1, "Unknown bias_level %d\n", dapm
->bias_level
);
2193 level
= "Unknown\n";
2197 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
2201 static const struct file_operations dapm_bias_fops
= {
2202 .open
= simple_open
,
2203 .read
= dapm_bias_read_file
,
2204 .llseek
= default_llseek
,
2207 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2208 struct dentry
*parent
)
2210 if (!parent
|| IS_ERR(parent
))
2213 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
2215 debugfs_create_file("bias_level", 0444, dapm
->debugfs_dapm
, dapm
,
2219 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2221 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
2223 if (!dapm
->debugfs_dapm
|| !w
->name
)
2226 debugfs_create_file(w
->name
, 0444, dapm
->debugfs_dapm
, w
,
2227 &dapm_widget_power_fops
);
2230 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2232 debugfs_remove_recursive(dapm
->debugfs_dapm
);
2233 dapm
->debugfs_dapm
= NULL
;
2237 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
2238 struct dentry
*parent
)
2242 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
2246 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
2253 * soc_dapm_connect_path() - Connects or disconnects a path
2254 * @path: The path to update
2255 * @connect: The new connect state of the path. True if the path is connected,
2256 * false if it is disconnected.
2257 * @reason: The reason why the path changed (for debugging only)
2259 static void soc_dapm_connect_path(struct snd_soc_dapm_path
*path
,
2260 bool connect
, const char *reason
)
2262 if (path
->connect
== connect
)
2265 path
->connect
= connect
;
2266 dapm_mark_dirty(path
->source
, reason
);
2267 dapm_mark_dirty(path
->sink
, reason
);
2268 dapm_path_invalidate(path
);
2271 /* test and update the power status of a mux widget */
2272 static int soc_dapm_mux_update_power(struct snd_soc_card
*card
,
2273 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
2275 struct snd_soc_dapm_path
*path
;
2279 lockdep_assert_held(&card
->dapm_mutex
);
2281 /* find dapm widget path assoc with kcontrol */
2282 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2284 /* we now need to match the string in the enum to the path */
2285 if (e
&& !(strcmp(path
->name
, e
->texts
[mux
])))
2290 soc_dapm_connect_path(path
, connect
, "mux update");
2294 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2299 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context
*dapm
,
2300 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
,
2301 struct snd_soc_dapm_update
*update
)
2303 struct snd_soc_card
*card
= dapm
->card
;
2306 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2307 card
->update
= update
;
2308 ret
= soc_dapm_mux_update_power(card
, kcontrol
, mux
, e
);
2309 card
->update
= NULL
;
2310 mutex_unlock(&card
->dapm_mutex
);
2312 snd_soc_dpcm_runtime_update(card
);
2315 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
2317 /* test and update the power status of a mixer or switch widget */
2318 static int soc_dapm_mixer_update_power(struct snd_soc_card
*card
,
2319 struct snd_kcontrol
*kcontrol
,
2320 int connect
, int rconnect
)
2322 struct snd_soc_dapm_path
*path
;
2325 lockdep_assert_held(&card
->dapm_mutex
);
2327 /* find dapm widget path assoc with kcontrol */
2328 dapm_kcontrol_for_each_path(path
, kcontrol
) {
2330 * Ideally this function should support any number of
2331 * paths and channels. But since kcontrols only come
2332 * in mono and stereo variants, we are limited to 2
2335 * The following code assumes for stereo controls the
2336 * first path (when 'found == 0') is the left channel,
2337 * and all remaining paths (when 'found == 1') are the
2340 * A stereo control is signified by a valid 'rconnect'
2341 * value, either 0 for unconnected, or >= 0 for connected.
2342 * This is chosen instead of using snd_soc_volsw_is_stereo,
2343 * so that the behavior of snd_soc_dapm_mixer_update_power
2344 * doesn't change even when the kcontrol passed in is
2347 * It passes 'connect' as the path connect status for
2348 * the left channel, and 'rconnect' for the right
2351 if (found
&& rconnect
>= 0)
2352 soc_dapm_connect_path(path
, rconnect
, "mixer update");
2354 soc_dapm_connect_path(path
, connect
, "mixer update");
2359 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
2364 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context
*dapm
,
2365 struct snd_kcontrol
*kcontrol
, int connect
,
2366 struct snd_soc_dapm_update
*update
)
2368 struct snd_soc_card
*card
= dapm
->card
;
2371 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2372 card
->update
= update
;
2373 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
, -1);
2374 card
->update
= NULL
;
2375 mutex_unlock(&card
->dapm_mutex
);
2377 snd_soc_dpcm_runtime_update(card
);
2380 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
2382 static ssize_t
dapm_widget_show_component(struct snd_soc_component
*cmpnt
,
2385 struct snd_soc_dapm_context
*dapm
= snd_soc_component_get_dapm(cmpnt
);
2386 struct snd_soc_dapm_widget
*w
;
2388 char *state
= "not set";
2390 /* card won't be set for the dummy component, as a spot fix
2391 * we're checking for that case specifically here but in future
2392 * we will ensure that the dummy component looks like others.
2397 for_each_card_widgets(cmpnt
->card
, w
) {
2398 if (w
->dapm
!= dapm
)
2401 /* only display widgets that burn power */
2403 case snd_soc_dapm_hp
:
2404 case snd_soc_dapm_mic
:
2405 case snd_soc_dapm_spk
:
2406 case snd_soc_dapm_line
:
2407 case snd_soc_dapm_micbias
:
2408 case snd_soc_dapm_dac
:
2409 case snd_soc_dapm_adc
:
2410 case snd_soc_dapm_pga
:
2411 case snd_soc_dapm_effect
:
2412 case snd_soc_dapm_out_drv
:
2413 case snd_soc_dapm_mixer
:
2414 case snd_soc_dapm_mixer_named_ctl
:
2415 case snd_soc_dapm_supply
:
2416 case snd_soc_dapm_regulator_supply
:
2417 case snd_soc_dapm_pinctrl
:
2418 case snd_soc_dapm_clock_supply
:
2420 count
+= sprintf(buf
+ count
, "%s: %s\n",
2421 w
->name
, w
->power
? "On":"Off");
2428 switch (snd_soc_dapm_get_bias_level(dapm
)) {
2429 case SND_SOC_BIAS_ON
:
2432 case SND_SOC_BIAS_PREPARE
:
2435 case SND_SOC_BIAS_STANDBY
:
2438 case SND_SOC_BIAS_OFF
:
2442 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2447 /* show dapm widget status in sys fs */
2448 static ssize_t
dapm_widget_show(struct device
*dev
,
2449 struct device_attribute
*attr
, char *buf
)
2451 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
2452 struct snd_soc_dai
*codec_dai
;
2455 mutex_lock(&rtd
->card
->dapm_mutex
);
2457 for_each_rtd_codec_dais(rtd
, i
, codec_dai
) {
2458 struct snd_soc_component
*cmpnt
= codec_dai
->component
;
2460 count
+= dapm_widget_show_component(cmpnt
, buf
+ count
);
2463 mutex_unlock(&rtd
->card
->dapm_mutex
);
2468 static DEVICE_ATTR_RO(dapm_widget
);
2470 struct attribute
*soc_dapm_dev_attrs
[] = {
2471 &dev_attr_dapm_widget
.attr
,
2475 static void dapm_free_path(struct snd_soc_dapm_path
*path
)
2477 list_del(&path
->list_node
[SND_SOC_DAPM_DIR_IN
]);
2478 list_del(&path
->list_node
[SND_SOC_DAPM_DIR_OUT
]);
2479 list_del(&path
->list_kcontrol
);
2480 list_del(&path
->list
);
2484 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget
*w
)
2486 struct snd_soc_dapm_path
*p
, *next_p
;
2487 enum snd_soc_dapm_direction dir
;
2491 * remove source and sink paths associated to this widget.
2492 * While removing the path, remove reference to it from both
2493 * source and sink widgets so that path is removed only once.
2495 snd_soc_dapm_for_each_direction(dir
) {
2496 snd_soc_dapm_widget_for_each_path_safe(w
, dir
, p
, next_p
)
2500 kfree(w
->kcontrols
);
2501 kfree_const(w
->name
);
2502 kfree_const(w
->sname
);
2506 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context
*dapm
)
2508 dapm
->path_sink_cache
.widget
= NULL
;
2509 dapm
->path_source_cache
.widget
= NULL
;
2512 /* free all dapm widgets and resources */
2513 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2515 struct snd_soc_dapm_widget
*w
, *next_w
;
2517 for_each_card_widgets_safe(dapm
->card
, w
, next_w
) {
2518 if (w
->dapm
!= dapm
)
2520 snd_soc_dapm_free_widget(w
);
2522 snd_soc_dapm_reset_cache(dapm
);
2525 static struct snd_soc_dapm_widget
*dapm_find_widget(
2526 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2527 bool search_other_contexts
)
2529 struct snd_soc_dapm_widget
*w
;
2530 struct snd_soc_dapm_widget
*fallback
= NULL
;
2532 for_each_card_widgets(dapm
->card
, w
) {
2533 if (!strcmp(w
->name
, pin
)) {
2534 if (w
->dapm
== dapm
)
2541 if (search_other_contexts
)
2547 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2548 const char *pin
, int status
)
2550 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2552 dapm_assert_locked(dapm
);
2555 dev_err(dapm
->dev
, "ASoC: DAPM unknown pin %s\n", pin
);
2559 if (w
->connected
!= status
) {
2560 dapm_mark_dirty(w
, "pin configuration");
2561 dapm_widget_invalidate_input_paths(w
);
2562 dapm_widget_invalidate_output_paths(w
);
2565 w
->connected
= status
;
2573 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2574 * @dapm: DAPM context
2576 * Walks all dapm audio paths and powers widgets according to their
2577 * stream or path usage.
2579 * Requires external locking.
2581 * Returns 0 for success.
2583 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context
*dapm
)
2586 * Suppress early reports (eg, jacks syncing their state) to avoid
2587 * silly DAPM runs during card startup.
2589 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2592 return dapm_power_widgets(dapm
->card
, SND_SOC_DAPM_STREAM_NOP
);
2594 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked
);
2597 * snd_soc_dapm_sync - scan and power dapm paths
2598 * @dapm: DAPM context
2600 * Walks all dapm audio paths and powers widgets according to their
2601 * stream or path usage.
2603 * Returns 0 for success.
2605 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2609 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2610 ret
= snd_soc_dapm_sync_unlocked(dapm
);
2611 mutex_unlock(&dapm
->card
->dapm_mutex
);
2614 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2616 static int dapm_update_dai_chan(struct snd_soc_dapm_path
*p
,
2617 struct snd_soc_dapm_widget
*w
,
2621 case snd_soc_dapm_aif_out
:
2622 case snd_soc_dapm_aif_in
:
2628 dev_dbg(w
->dapm
->dev
, "%s DAI route %s -> %s\n",
2629 w
->channel
< channels
? "Connecting" : "Disconnecting",
2630 p
->source
->name
, p
->sink
->name
);
2632 if (w
->channel
< channels
)
2633 soc_dapm_connect_path(p
, true, "dai update");
2635 soc_dapm_connect_path(p
, false, "dai update");
2640 static int dapm_update_dai_unlocked(struct snd_pcm_substream
*substream
,
2641 struct snd_pcm_hw_params
*params
,
2642 struct snd_soc_dai
*dai
)
2644 int dir
= substream
->stream
;
2645 int channels
= params_channels(params
);
2646 struct snd_soc_dapm_path
*p
;
2647 struct snd_soc_dapm_widget
*w
;
2650 w
= snd_soc_dai_get_widget(dai
, dir
);
2655 dev_dbg(dai
->dev
, "Update DAI routes for %s %s\n", dai
->name
,
2656 dir
== SNDRV_PCM_STREAM_PLAYBACK
? "playback" : "capture");
2658 snd_soc_dapm_widget_for_each_sink_path(w
, p
) {
2659 ret
= dapm_update_dai_chan(p
, p
->sink
, channels
);
2664 snd_soc_dapm_widget_for_each_source_path(w
, p
) {
2665 ret
= dapm_update_dai_chan(p
, p
->source
, channels
);
2673 int snd_soc_dapm_update_dai(struct snd_pcm_substream
*substream
,
2674 struct snd_pcm_hw_params
*params
,
2675 struct snd_soc_dai
*dai
)
2677 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
2680 mutex_lock_nested(&rtd
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2681 ret
= dapm_update_dai_unlocked(substream
, params
, dai
);
2682 mutex_unlock(&rtd
->card
->dapm_mutex
);
2686 EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai
);
2689 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2690 * @w: The widget for which to update the flags
2692 * Some widgets have a dynamic category which depends on which neighbors they
2693 * are connected to. This function update the category for these widgets.
2695 * This function must be called whenever a path is added or removed to a widget.
2697 static void dapm_update_widget_flags(struct snd_soc_dapm_widget
*w
)
2699 enum snd_soc_dapm_direction dir
;
2700 struct snd_soc_dapm_path
*p
;
2704 case snd_soc_dapm_input
:
2705 /* On a fully routed card an input is never a source */
2706 if (w
->dapm
->card
->fully_routed
)
2708 ep
= SND_SOC_DAPM_EP_SOURCE
;
2709 snd_soc_dapm_widget_for_each_source_path(w
, p
) {
2710 if (p
->source
->id
== snd_soc_dapm_micbias
||
2711 p
->source
->id
== snd_soc_dapm_mic
||
2712 p
->source
->id
== snd_soc_dapm_line
||
2713 p
->source
->id
== snd_soc_dapm_output
) {
2719 case snd_soc_dapm_output
:
2720 /* On a fully routed card a output is never a sink */
2721 if (w
->dapm
->card
->fully_routed
)
2723 ep
= SND_SOC_DAPM_EP_SINK
;
2724 snd_soc_dapm_widget_for_each_sink_path(w
, p
) {
2725 if (p
->sink
->id
== snd_soc_dapm_spk
||
2726 p
->sink
->id
== snd_soc_dapm_hp
||
2727 p
->sink
->id
== snd_soc_dapm_line
||
2728 p
->sink
->id
== snd_soc_dapm_input
) {
2734 case snd_soc_dapm_line
:
2736 snd_soc_dapm_for_each_direction(dir
) {
2737 if (!list_empty(&w
->edges
[dir
]))
2738 ep
|= SND_SOC_DAPM_DIR_TO_EP(dir
);
2748 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context
*dapm
,
2749 struct snd_soc_dapm_widget
*source
, struct snd_soc_dapm_widget
*sink
,
2750 const char *control
)
2752 bool dynamic_source
= false;
2753 bool dynamic_sink
= false;
2758 switch (source
->id
) {
2759 case snd_soc_dapm_demux
:
2760 dynamic_source
= true;
2767 case snd_soc_dapm_mux
:
2768 case snd_soc_dapm_switch
:
2769 case snd_soc_dapm_mixer
:
2770 case snd_soc_dapm_mixer_named_ctl
:
2771 dynamic_sink
= true;
2777 if (dynamic_source
&& dynamic_sink
) {
2779 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2780 source
->name
, control
, sink
->name
);
2782 } else if (!dynamic_source
&& !dynamic_sink
) {
2784 "Control not supported for path %s -> [%s] -> %s\n",
2785 source
->name
, control
, sink
->name
);
2792 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context
*dapm
,
2793 struct snd_soc_dapm_widget
*wsource
, struct snd_soc_dapm_widget
*wsink
,
2794 const char *control
,
2795 int (*connected
)(struct snd_soc_dapm_widget
*source
,
2796 struct snd_soc_dapm_widget
*sink
))
2798 struct snd_soc_dapm_widget
*widgets
[2];
2799 enum snd_soc_dapm_direction dir
;
2800 struct snd_soc_dapm_path
*path
;
2803 if (wsink
->is_supply
&& !wsource
->is_supply
) {
2805 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2806 wsource
->name
, wsink
->name
);
2810 if (connected
&& !wsource
->is_supply
) {
2812 "connected() callback only supported for supply widgets (%s -> %s)\n",
2813 wsource
->name
, wsink
->name
);
2817 if (wsource
->is_supply
&& control
) {
2819 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2820 wsource
->name
, control
, wsink
->name
);
2824 ret
= snd_soc_dapm_check_dynamic_path(dapm
, wsource
, wsink
, control
);
2828 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2832 path
->node
[SND_SOC_DAPM_DIR_IN
] = wsource
;
2833 path
->node
[SND_SOC_DAPM_DIR_OUT
] = wsink
;
2834 widgets
[SND_SOC_DAPM_DIR_IN
] = wsource
;
2835 widgets
[SND_SOC_DAPM_DIR_OUT
] = wsink
;
2837 path
->connected
= connected
;
2838 INIT_LIST_HEAD(&path
->list
);
2839 INIT_LIST_HEAD(&path
->list_kcontrol
);
2841 if (wsource
->is_supply
|| wsink
->is_supply
)
2842 path
->is_supply
= 1;
2844 /* connect static paths */
2845 if (control
== NULL
) {
2848 switch (wsource
->id
) {
2849 case snd_soc_dapm_demux
:
2850 ret
= dapm_connect_mux(dapm
, path
, control
, wsource
);
2858 switch (wsink
->id
) {
2859 case snd_soc_dapm_mux
:
2860 ret
= dapm_connect_mux(dapm
, path
, control
, wsink
);
2864 case snd_soc_dapm_switch
:
2865 case snd_soc_dapm_mixer
:
2866 case snd_soc_dapm_mixer_named_ctl
:
2867 ret
= dapm_connect_mixer(dapm
, path
, control
);
2876 list_add(&path
->list
, &dapm
->card
->paths
);
2877 snd_soc_dapm_for_each_direction(dir
)
2878 list_add(&path
->list_node
[dir
], &widgets
[dir
]->edges
[dir
]);
2880 snd_soc_dapm_for_each_direction(dir
) {
2881 dapm_update_widget_flags(widgets
[dir
]);
2882 dapm_mark_dirty(widgets
[dir
], "Route added");
2885 if (dapm
->card
->instantiated
&& path
->connect
)
2886 dapm_path_invalidate(path
);
2894 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2895 const struct snd_soc_dapm_route
*route
)
2897 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2898 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2901 char prefixed_sink
[80];
2902 char prefixed_source
[80];
2904 unsigned int sink_ref
= 0;
2905 unsigned int source_ref
= 0;
2908 prefix
= soc_dapm_prefix(dapm
);
2910 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2911 prefix
, route
->sink
);
2912 sink
= prefixed_sink
;
2913 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2914 prefix
, route
->source
);
2915 source
= prefixed_source
;
2918 source
= route
->source
;
2921 wsource
= dapm_wcache_lookup(&dapm
->path_source_cache
, source
);
2922 wsink
= dapm_wcache_lookup(&dapm
->path_sink_cache
, sink
);
2924 if (wsink
&& wsource
)
2928 * find src and dest widgets over all widgets but favor a widget from
2929 * current DAPM context
2931 for_each_card_widgets(dapm
->card
, w
) {
2932 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2934 if (w
->dapm
== dapm
) {
2942 "ASoC: sink widget %s overwritten\n",
2946 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2948 if (w
->dapm
== dapm
) {
2956 "ASoC: source widget %s overwritten\n",
2960 /* use widget from another DAPM context if not found from this */
2966 if (wsource
== NULL
) {
2967 dev_err(dapm
->dev
, "ASoC: no source widget found for %s\n",
2971 if (wsink
== NULL
) {
2972 dev_err(dapm
->dev
, "ASoC: no sink widget found for %s\n",
2978 dapm_wcache_update(&dapm
->path_sink_cache
, wsink
);
2979 dapm_wcache_update(&dapm
->path_source_cache
, wsource
);
2981 ret
= snd_soc_dapm_add_path(dapm
, wsource
, wsink
, route
->control
,
2988 dev_warn(dapm
->dev
, "ASoC: no dapm match for %s --> %s --> %s\n",
2989 source
, route
->control
, sink
);
2993 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2994 const struct snd_soc_dapm_route
*route
)
2996 struct snd_soc_dapm_widget
*wsource
, *wsink
;
2997 struct snd_soc_dapm_path
*path
, *p
;
3000 char prefixed_sink
[80];
3001 char prefixed_source
[80];
3004 if (route
->control
) {
3006 "ASoC: Removal of routes with controls not supported\n");
3010 prefix
= soc_dapm_prefix(dapm
);
3012 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
3013 prefix
, route
->sink
);
3014 sink
= prefixed_sink
;
3015 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
3016 prefix
, route
->source
);
3017 source
= prefixed_source
;
3020 source
= route
->source
;
3024 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
3025 if (strcmp(p
->source
->name
, source
) != 0)
3027 if (strcmp(p
->sink
->name
, sink
) != 0)
3034 wsource
= path
->source
;
3037 dapm_mark_dirty(wsource
, "Route removed");
3038 dapm_mark_dirty(wsink
, "Route removed");
3040 dapm_path_invalidate(path
);
3042 dapm_free_path(path
);
3044 /* Update any path related flags */
3045 dapm_update_widget_flags(wsource
);
3046 dapm_update_widget_flags(wsink
);
3048 dev_warn(dapm
->dev
, "ASoC: Route %s->%s does not exist\n",
3056 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
3057 * @dapm: DAPM context
3058 * @route: audio routes
3059 * @num: number of routes
3061 * Connects 2 dapm widgets together via a named audio path. The sink is
3062 * the widget receiving the audio signal, whilst the source is the sender
3063 * of the audio signal.
3065 * Returns 0 for success else error. On error all resources can be freed
3066 * with a call to snd_soc_card_free().
3068 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
3069 const struct snd_soc_dapm_route
*route
, int num
)
3073 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3074 for (i
= 0; i
< num
; i
++) {
3075 r
= snd_soc_dapm_add_route(dapm
, route
);
3077 dev_err(dapm
->dev
, "ASoC: Failed to add route %s -> %s -> %s\n",
3079 route
->control
? route
->control
: "direct",
3085 mutex_unlock(&dapm
->card
->dapm_mutex
);
3089 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
3092 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
3093 * @dapm: DAPM context
3094 * @route: audio routes
3095 * @num: number of routes
3097 * Removes routes from the DAPM context.
3099 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
3100 const struct snd_soc_dapm_route
*route
, int num
)
3104 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3105 for (i
= 0; i
< num
; i
++) {
3106 snd_soc_dapm_del_route(dapm
, route
);
3109 mutex_unlock(&dapm
->card
->dapm_mutex
);
3113 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
3115 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
3116 const struct snd_soc_dapm_route
*route
)
3118 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
3121 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
3124 struct snd_soc_dapm_path
*path
;
3128 dev_err(dapm
->dev
, "ASoC: Unable to find source %s for weak route\n",
3134 dev_err(dapm
->dev
, "ASoC: Unable to find sink %s for weak route\n",
3139 if (route
->control
|| route
->connected
)
3140 dev_warn(dapm
->dev
, "ASoC: Ignoring control for weak route %s->%s\n",
3141 route
->source
, route
->sink
);
3143 snd_soc_dapm_widget_for_each_sink_path(source
, path
) {
3144 if (path
->sink
== sink
) {
3151 dev_err(dapm
->dev
, "ASoC: No path found for weak route %s->%s\n",
3152 route
->source
, route
->sink
);
3154 dev_warn(dapm
->dev
, "ASoC: %d paths found for weak route %s->%s\n",
3155 count
, route
->source
, route
->sink
);
3161 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
3162 * @dapm: DAPM context
3163 * @route: audio routes
3164 * @num: number of routes
3166 * Mark existing routes matching those specified in the passed array
3167 * as being weak, meaning that they are ignored for the purpose of
3168 * power decisions. The main intended use case is for sidetone paths
3169 * which couple audio between other independent paths if they are both
3170 * active in order to make the combination work better at the user
3171 * level but which aren't intended to be "used".
3173 * Note that CODEC drivers should not use this as sidetone type paths
3174 * can frequently also be used as bypass paths.
3176 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
3177 const struct snd_soc_dapm_route
*route
, int num
)
3182 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3183 for (i
= 0; i
< num
; i
++) {
3184 err
= snd_soc_dapm_weak_route(dapm
, route
);
3189 mutex_unlock(&dapm
->card
->dapm_mutex
);
3193 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
3196 * snd_soc_dapm_new_widgets - add new dapm widgets
3197 * @card: card to be checked for new dapm widgets
3199 * Checks the codec for any new dapm widgets and creates them if found.
3201 * Returns 0 for success.
3203 int snd_soc_dapm_new_widgets(struct snd_soc_card
*card
)
3205 struct snd_soc_dapm_widget
*w
;
3208 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3210 for_each_card_widgets(card
, w
)
3215 if (w
->num_kcontrols
) {
3216 w
->kcontrols
= kcalloc(w
->num_kcontrols
,
3217 sizeof(struct snd_kcontrol
*),
3219 if (!w
->kcontrols
) {
3220 mutex_unlock(&card
->dapm_mutex
);
3226 case snd_soc_dapm_switch
:
3227 case snd_soc_dapm_mixer
:
3228 case snd_soc_dapm_mixer_named_ctl
:
3231 case snd_soc_dapm_mux
:
3232 case snd_soc_dapm_demux
:
3235 case snd_soc_dapm_pga
:
3236 case snd_soc_dapm_effect
:
3237 case snd_soc_dapm_out_drv
:
3240 case snd_soc_dapm_dai_link
:
3241 dapm_new_dai_link(w
);
3247 /* Read the initial power state from the device */
3249 soc_dapm_read(w
->dapm
, w
->reg
, &val
);
3250 val
= val
>> w
->shift
;
3252 if (val
== w
->on_val
)
3258 dapm_mark_dirty(w
, "new widget");
3259 dapm_debugfs_add_widget(w
);
3262 dapm_power_widgets(card
, SND_SOC_DAPM_STREAM_NOP
);
3263 mutex_unlock(&card
->dapm_mutex
);
3266 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
3269 * snd_soc_dapm_get_volsw - dapm mixer get callback
3270 * @kcontrol: mixer control
3271 * @ucontrol: control element information
3273 * Callback to get the value of a dapm mixer control.
3275 * Returns 0 for success.
3277 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
3278 struct snd_ctl_elem_value
*ucontrol
)
3280 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3281 struct snd_soc_card
*card
= dapm
->card
;
3282 struct soc_mixer_control
*mc
=
3283 (struct soc_mixer_control
*)kcontrol
->private_value
;
3285 unsigned int shift
= mc
->shift
;
3287 unsigned int width
= fls(max
);
3288 unsigned int mask
= (1 << fls(max
)) - 1;
3289 unsigned int invert
= mc
->invert
;
3290 unsigned int reg_val
, val
, rval
= 0;
3293 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3294 if (dapm_kcontrol_is_powered(kcontrol
) && reg
!= SND_SOC_NOPM
) {
3295 ret
= soc_dapm_read(dapm
, reg
, ®_val
);
3296 val
= (reg_val
>> shift
) & mask
;
3298 if (ret
== 0 && reg
!= mc
->rreg
)
3299 ret
= soc_dapm_read(dapm
, mc
->rreg
, ®_val
);
3301 if (snd_soc_volsw_is_stereo(mc
))
3302 rval
= (reg_val
>> mc
->rshift
) & mask
;
3304 reg_val
= dapm_kcontrol_get_value(kcontrol
);
3305 val
= reg_val
& mask
;
3307 if (snd_soc_volsw_is_stereo(mc
))
3308 rval
= (reg_val
>> width
) & mask
;
3310 mutex_unlock(&card
->dapm_mutex
);
3316 ucontrol
->value
.integer
.value
[0] = max
- val
;
3318 ucontrol
->value
.integer
.value
[0] = val
;
3320 if (snd_soc_volsw_is_stereo(mc
)) {
3322 ucontrol
->value
.integer
.value
[1] = max
- rval
;
3324 ucontrol
->value
.integer
.value
[1] = rval
;
3329 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
3332 * snd_soc_dapm_put_volsw - dapm mixer set callback
3333 * @kcontrol: mixer control
3334 * @ucontrol: control element information
3336 * Callback to set the value of a dapm mixer control.
3338 * Returns 0 for success.
3340 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
3341 struct snd_ctl_elem_value
*ucontrol
)
3343 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3344 struct snd_soc_card
*card
= dapm
->card
;
3345 struct soc_mixer_control
*mc
=
3346 (struct soc_mixer_control
*)kcontrol
->private_value
;
3348 unsigned int shift
= mc
->shift
;
3350 unsigned int width
= fls(max
);
3351 unsigned int mask
= (1 << width
) - 1;
3352 unsigned int invert
= mc
->invert
;
3353 unsigned int val
, rval
= 0;
3354 int connect
, rconnect
= -1, change
, reg_change
= 0;
3355 struct snd_soc_dapm_update update
= {};
3358 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
3364 if (snd_soc_volsw_is_stereo(mc
)) {
3365 rval
= (ucontrol
->value
.integer
.value
[1] & mask
);
3371 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3373 /* This assumes field width < (bits in unsigned int / 2) */
3374 if (width
> sizeof(unsigned int) * 8 / 2)
3376 "ASoC: control %s field width limit exceeded\n",
3378 change
= dapm_kcontrol_set_value(kcontrol
, val
| (rval
<< width
));
3380 if (reg
!= SND_SOC_NOPM
) {
3382 rval
= rval
<< mc
->rshift
;
3384 reg_change
= soc_dapm_test_bits(dapm
, reg
, mask
<< shift
, val
);
3386 if (snd_soc_volsw_is_stereo(mc
))
3387 reg_change
|= soc_dapm_test_bits(dapm
, mc
->rreg
,
3392 if (change
|| reg_change
) {
3394 if (snd_soc_volsw_is_stereo(mc
)) {
3395 update
.has_second_set
= true;
3396 update
.reg2
= mc
->rreg
;
3397 update
.mask2
= mask
<< mc
->rshift
;
3400 update
.kcontrol
= kcontrol
;
3402 update
.mask
= mask
<< shift
;
3404 card
->update
= &update
;
3406 change
|= reg_change
;
3408 ret
= soc_dapm_mixer_update_power(card
, kcontrol
, connect
,
3411 card
->update
= NULL
;
3414 mutex_unlock(&card
->dapm_mutex
);
3417 snd_soc_dpcm_runtime_update(card
);
3421 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
3424 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3425 * @kcontrol: mixer control
3426 * @ucontrol: control element information
3428 * Callback to get the value of a dapm enumerated double mixer control.
3430 * Returns 0 for success.
3432 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
3433 struct snd_ctl_elem_value
*ucontrol
)
3435 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3436 struct snd_soc_card
*card
= dapm
->card
;
3437 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3438 unsigned int reg_val
, val
;
3440 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3441 if (e
->reg
!= SND_SOC_NOPM
&& dapm_kcontrol_is_powered(kcontrol
)) {
3442 int ret
= soc_dapm_read(dapm
, e
->reg
, ®_val
);
3444 mutex_unlock(&card
->dapm_mutex
);
3448 reg_val
= dapm_kcontrol_get_value(kcontrol
);
3450 mutex_unlock(&card
->dapm_mutex
);
3452 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
3453 ucontrol
->value
.enumerated
.item
[0] = snd_soc_enum_val_to_item(e
, val
);
3454 if (e
->shift_l
!= e
->shift_r
) {
3455 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
3456 val
= snd_soc_enum_val_to_item(e
, val
);
3457 ucontrol
->value
.enumerated
.item
[1] = val
;
3462 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
3465 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3466 * @kcontrol: mixer control
3467 * @ucontrol: control element information
3469 * Callback to set the value of a dapm enumerated double mixer control.
3471 * Returns 0 for success.
3473 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
3474 struct snd_ctl_elem_value
*ucontrol
)
3476 struct snd_soc_dapm_context
*dapm
= snd_soc_dapm_kcontrol_dapm(kcontrol
);
3477 struct snd_soc_card
*card
= dapm
->card
;
3478 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
3479 unsigned int *item
= ucontrol
->value
.enumerated
.item
;
3480 unsigned int val
, change
, reg_change
= 0;
3482 struct snd_soc_dapm_update update
= {};
3485 if (item
[0] >= e
->items
)
3488 val
= snd_soc_enum_item_to_val(e
, item
[0]) << e
->shift_l
;
3489 mask
= e
->mask
<< e
->shift_l
;
3490 if (e
->shift_l
!= e
->shift_r
) {
3491 if (item
[1] > e
->items
)
3493 val
|= snd_soc_enum_item_to_val(e
, item
[1]) << e
->shift_r
;
3494 mask
|= e
->mask
<< e
->shift_r
;
3497 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3499 change
= dapm_kcontrol_set_value(kcontrol
, val
);
3501 if (e
->reg
!= SND_SOC_NOPM
)
3502 reg_change
= soc_dapm_test_bits(dapm
, e
->reg
, mask
, val
);
3504 if (change
|| reg_change
) {
3506 update
.kcontrol
= kcontrol
;
3507 update
.reg
= e
->reg
;
3510 card
->update
= &update
;
3512 change
|= reg_change
;
3514 ret
= soc_dapm_mux_update_power(card
, kcontrol
, item
[0], e
);
3516 card
->update
= NULL
;
3519 mutex_unlock(&card
->dapm_mutex
);
3522 snd_soc_dpcm_runtime_update(card
);
3526 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
3529 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3531 * @kcontrol: mixer control
3532 * @uinfo: control element information
3534 * Callback to provide information about a pin switch control.
3536 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
3537 struct snd_ctl_elem_info
*uinfo
)
3539 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
3541 uinfo
->value
.integer
.min
= 0;
3542 uinfo
->value
.integer
.max
= 1;
3546 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
3549 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3551 * @kcontrol: mixer control
3554 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
3555 struct snd_ctl_elem_value
*ucontrol
)
3557 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3558 const char *pin
= (const char *)kcontrol
->private_value
;
3560 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3562 ucontrol
->value
.integer
.value
[0] =
3563 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
3565 mutex_unlock(&card
->dapm_mutex
);
3569 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
3572 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3574 * @kcontrol: mixer control
3577 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
3578 struct snd_ctl_elem_value
*ucontrol
)
3580 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
3581 const char *pin
= (const char *)kcontrol
->private_value
;
3583 if (ucontrol
->value
.integer
.value
[0])
3584 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
3586 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
3588 snd_soc_dapm_sync(&card
->dapm
);
3591 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
3593 struct snd_soc_dapm_widget
*
3594 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context
*dapm
,
3595 const struct snd_soc_dapm_widget
*widget
)
3597 enum snd_soc_dapm_direction dir
;
3598 struct snd_soc_dapm_widget
*w
;
3602 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
3603 return ERR_PTR(-ENOMEM
);
3606 case snd_soc_dapm_regulator_supply
:
3607 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
3608 if (IS_ERR(w
->regulator
)) {
3609 ret
= PTR_ERR(w
->regulator
);
3610 goto request_failed
;
3613 if (w
->on_val
& SND_SOC_DAPM_REGULATOR_BYPASS
) {
3614 ret
= regulator_allow_bypass(w
->regulator
, true);
3617 "ASoC: Failed to bypass %s: %d\n",
3621 case snd_soc_dapm_pinctrl
:
3622 w
->pinctrl
= devm_pinctrl_get(dapm
->dev
);
3623 if (IS_ERR(w
->pinctrl
)) {
3624 ret
= PTR_ERR(w
->pinctrl
);
3625 goto request_failed
;
3628 /* set to sleep_state when initializing */
3629 dapm_pinctrl_event(w
, NULL
, SND_SOC_DAPM_POST_PMD
);
3631 case snd_soc_dapm_clock_supply
:
3632 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
3633 if (IS_ERR(w
->clk
)) {
3634 ret
= PTR_ERR(w
->clk
);
3635 goto request_failed
;
3642 prefix
= soc_dapm_prefix(dapm
);
3644 w
->name
= kasprintf(GFP_KERNEL
, "%s %s", prefix
, widget
->name
);
3646 w
->name
= kstrdup_const(widget
->name
, GFP_KERNEL
);
3647 if (w
->name
== NULL
) {
3648 kfree_const(w
->sname
);
3650 return ERR_PTR(-ENOMEM
);
3654 case snd_soc_dapm_mic
:
3655 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3656 w
->power_check
= dapm_generic_check_power
;
3658 case snd_soc_dapm_input
:
3659 if (!dapm
->card
->fully_routed
)
3660 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3661 w
->power_check
= dapm_generic_check_power
;
3663 case snd_soc_dapm_spk
:
3664 case snd_soc_dapm_hp
:
3665 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3666 w
->power_check
= dapm_generic_check_power
;
3668 case snd_soc_dapm_output
:
3669 if (!dapm
->card
->fully_routed
)
3670 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3671 w
->power_check
= dapm_generic_check_power
;
3673 case snd_soc_dapm_vmid
:
3674 case snd_soc_dapm_siggen
:
3675 w
->is_ep
= SND_SOC_DAPM_EP_SOURCE
;
3676 w
->power_check
= dapm_always_on_check_power
;
3678 case snd_soc_dapm_sink
:
3679 w
->is_ep
= SND_SOC_DAPM_EP_SINK
;
3680 w
->power_check
= dapm_always_on_check_power
;
3683 case snd_soc_dapm_mux
:
3684 case snd_soc_dapm_demux
:
3685 case snd_soc_dapm_switch
:
3686 case snd_soc_dapm_mixer
:
3687 case snd_soc_dapm_mixer_named_ctl
:
3688 case snd_soc_dapm_adc
:
3689 case snd_soc_dapm_aif_out
:
3690 case snd_soc_dapm_dac
:
3691 case snd_soc_dapm_aif_in
:
3692 case snd_soc_dapm_pga
:
3693 case snd_soc_dapm_buffer
:
3694 case snd_soc_dapm_scheduler
:
3695 case snd_soc_dapm_effect
:
3696 case snd_soc_dapm_src
:
3697 case snd_soc_dapm_asrc
:
3698 case snd_soc_dapm_encoder
:
3699 case snd_soc_dapm_decoder
:
3700 case snd_soc_dapm_out_drv
:
3701 case snd_soc_dapm_micbias
:
3702 case snd_soc_dapm_line
:
3703 case snd_soc_dapm_dai_link
:
3704 case snd_soc_dapm_dai_out
:
3705 case snd_soc_dapm_dai_in
:
3706 w
->power_check
= dapm_generic_check_power
;
3708 case snd_soc_dapm_supply
:
3709 case snd_soc_dapm_regulator_supply
:
3710 case snd_soc_dapm_pinctrl
:
3711 case snd_soc_dapm_clock_supply
:
3712 case snd_soc_dapm_kcontrol
:
3714 w
->power_check
= dapm_supply_check_power
;
3717 w
->power_check
= dapm_always_on_check_power
;
3722 INIT_LIST_HEAD(&w
->list
);
3723 INIT_LIST_HEAD(&w
->dirty
);
3724 /* see for_each_card_widgets */
3725 list_add_tail(&w
->list
, &dapm
->card
->widgets
);
3727 snd_soc_dapm_for_each_direction(dir
) {
3728 INIT_LIST_HEAD(&w
->edges
[dir
]);
3729 w
->endpoints
[dir
] = -1;
3732 /* machine layer sets up unconnected pins and insertions */
3737 if (ret
!= -EPROBE_DEFER
)
3738 dev_err(dapm
->dev
, "ASoC: Failed to request %s: %d\n",
3741 kfree_const(w
->sname
);
3743 return ERR_PTR(ret
);
3747 * snd_soc_dapm_new_control - create new dapm control
3748 * @dapm: DAPM context
3749 * @widget: widget template
3751 * Creates new DAPM control based upon a template.
3753 * Returns a widget pointer on success or an error pointer on failure
3755 struct snd_soc_dapm_widget
*
3756 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
3757 const struct snd_soc_dapm_widget
*widget
)
3759 struct snd_soc_dapm_widget
*w
;
3761 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3762 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3763 mutex_unlock(&dapm
->card
->dapm_mutex
);
3767 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control
);
3770 * snd_soc_dapm_new_controls - create new dapm controls
3771 * @dapm: DAPM context
3772 * @widget: widget array
3773 * @num: number of widgets
3775 * Creates new DAPM controls based upon the templates.
3777 * Returns 0 for success else error.
3779 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3780 const struct snd_soc_dapm_widget
*widget
,
3783 struct snd_soc_dapm_widget
*w
;
3787 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3788 for (i
= 0; i
< num
; i
++) {
3789 w
= snd_soc_dapm_new_control_unlocked(dapm
, widget
);
3796 mutex_unlock(&dapm
->card
->dapm_mutex
);
3799 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3802 snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget
*w
,
3803 struct snd_pcm_substream
*substream
)
3805 struct snd_soc_dapm_path
*path
;
3806 struct snd_soc_dai
*source
, *sink
;
3807 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
3808 struct snd_pcm_hw_params
*params
= NULL
;
3809 const struct snd_soc_pcm_stream
*config
= NULL
;
3810 struct snd_pcm_runtime
*runtime
= NULL
;
3814 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3818 runtime
= kzalloc(sizeof(*runtime
), GFP_KERNEL
);
3824 substream
->runtime
= runtime
;
3826 substream
->stream
= SNDRV_PCM_STREAM_CAPTURE
;
3827 snd_soc_dapm_widget_for_each_source_path(w
, path
) {
3828 source
= path
->source
->priv
;
3830 ret
= snd_soc_dai_startup(source
, substream
);
3832 dev_err(source
->dev
,
3833 "ASoC: startup() failed: %d\n", ret
);
3836 snd_soc_dai_activate(source
, substream
->stream
);
3839 substream
->stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3840 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
3841 sink
= path
->sink
->priv
;
3843 ret
= snd_soc_dai_startup(sink
, substream
);
3846 "ASoC: startup() failed: %d\n", ret
);
3849 snd_soc_dai_activate(sink
, substream
->stream
);
3852 substream
->hw_opened
= 1;
3855 * Note: getting the config after .startup() gives a chance to
3856 * either party on the link to alter the configuration if
3859 config
= rtd
->dai_link
->params
+ rtd
->params_select
;
3860 if (WARN_ON(!config
)) {
3861 dev_err(w
->dapm
->dev
, "ASoC: link config missing\n");
3866 /* Be a little careful as we don't want to overflow the mask array */
3867 if (config
->formats
) {
3868 fmt
= ffs(config
->formats
) - 1;
3870 dev_warn(w
->dapm
->dev
, "ASoC: Invalid format %llx specified\n",
3877 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3878 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3880 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3882 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3883 = config
->channels_min
;
3884 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3885 = config
->channels_max
;
3887 substream
->stream
= SNDRV_PCM_STREAM_CAPTURE
;
3888 snd_soc_dapm_widget_for_each_source_path(w
, path
) {
3889 source
= path
->source
->priv
;
3891 ret
= snd_soc_dai_hw_params(source
, substream
, params
);
3895 dapm_update_dai_unlocked(substream
, params
, source
);
3898 substream
->stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3899 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
3900 sink
= path
->sink
->priv
;
3902 ret
= snd_soc_dai_hw_params(sink
, substream
, params
);
3906 dapm_update_dai_unlocked(substream
, params
, sink
);
3909 runtime
->format
= params_format(params
);
3910 runtime
->subformat
= params_subformat(params
);
3911 runtime
->channels
= params_channels(params
);
3912 runtime
->rate
= params_rate(params
);
3919 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3920 struct snd_kcontrol
*kcontrol
, int event
)
3922 struct snd_soc_dapm_path
*path
;
3923 struct snd_soc_dai
*source
, *sink
;
3924 struct snd_pcm_substream
*substream
= w
->priv
;
3925 int ret
= 0, saved_stream
= substream
->stream
;
3927 if (WARN_ON(list_empty(&w
->edges
[SND_SOC_DAPM_DIR_OUT
]) ||
3928 list_empty(&w
->edges
[SND_SOC_DAPM_DIR_IN
])))
3932 case SND_SOC_DAPM_PRE_PMU
:
3933 ret
= snd_soc_dai_link_event_pre_pmu(w
, substream
);
3939 case SND_SOC_DAPM_POST_PMU
:
3940 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
3941 sink
= path
->sink
->priv
;
3943 ret
= snd_soc_dai_digital_mute(sink
, 0,
3944 SNDRV_PCM_STREAM_PLAYBACK
);
3945 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3947 "ASoC: Failed to unmute: %d\n", ret
);
3952 case SND_SOC_DAPM_PRE_PMD
:
3953 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
3954 sink
= path
->sink
->priv
;
3956 ret
= snd_soc_dai_digital_mute(sink
, 1,
3957 SNDRV_PCM_STREAM_PLAYBACK
);
3958 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3960 "ASoC: Failed to mute: %d\n", ret
);
3964 substream
->stream
= SNDRV_PCM_STREAM_CAPTURE
;
3965 snd_soc_dapm_widget_for_each_source_path(w
, path
) {
3966 source
= path
->source
->priv
;
3967 snd_soc_dai_hw_free(source
, substream
);
3970 substream
->stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3971 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
3972 sink
= path
->sink
->priv
;
3973 snd_soc_dai_hw_free(sink
, substream
);
3976 substream
->stream
= SNDRV_PCM_STREAM_CAPTURE
;
3977 snd_soc_dapm_widget_for_each_source_path(w
, path
) {
3978 source
= path
->source
->priv
;
3979 snd_soc_dai_deactivate(source
, substream
->stream
);
3980 snd_soc_dai_shutdown(source
, substream
);
3983 substream
->stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3984 snd_soc_dapm_widget_for_each_sink_path(w
, path
) {
3985 sink
= path
->sink
->priv
;
3986 snd_soc_dai_deactivate(sink
, substream
->stream
);
3987 snd_soc_dai_shutdown(sink
, substream
);
3991 case SND_SOC_DAPM_POST_PMD
:
3992 kfree(substream
->runtime
);
3996 WARN(1, "Unknown event %d\n", event
);
4001 /* Restore the substream direction */
4002 substream
->stream
= saved_stream
;
4006 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol
*kcontrol
,
4007 struct snd_ctl_elem_value
*ucontrol
)
4009 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
4010 struct snd_soc_pcm_runtime
*rtd
= w
->priv
;
4012 ucontrol
->value
.enumerated
.item
[0] = rtd
->params_select
;
4017 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol
*kcontrol
,
4018 struct snd_ctl_elem_value
*ucontrol
)
4020 struct snd_soc_dapm_widget
*w
= snd_kcontrol_chip(kcontrol
);
4021 struct snd_soc_pcm_runtime
*rtd
= w
->priv
;
4023 /* Can't change the config when widget is already powered */
4027 if (ucontrol
->value
.enumerated
.item
[0] == rtd
->params_select
)
4030 if (ucontrol
->value
.enumerated
.item
[0] >= rtd
->dai_link
->num_params
)
4033 rtd
->params_select
= ucontrol
->value
.enumerated
.item
[0];
4039 snd_soc_dapm_free_kcontrol(struct snd_soc_card
*card
,
4040 unsigned long *private_value
,
4042 const char **w_param_text
)
4046 devm_kfree(card
->dev
, (void *)*private_value
);
4051 for (count
= 0 ; count
< num_params
; count
++)
4052 devm_kfree(card
->dev
, (void *)w_param_text
[count
]);
4053 devm_kfree(card
->dev
, w_param_text
);
4056 static struct snd_kcontrol_new
*
4057 snd_soc_dapm_alloc_kcontrol(struct snd_soc_card
*card
,
4059 const struct snd_soc_pcm_stream
*params
,
4060 int num_params
, const char **w_param_text
,
4061 unsigned long *private_value
)
4063 struct soc_enum w_param_enum
[] = {
4064 SOC_ENUM_SINGLE(0, 0, 0, NULL
),
4066 struct snd_kcontrol_new kcontrol_dai_link
[] = {
4067 SOC_ENUM_EXT(NULL
, w_param_enum
[0],
4068 snd_soc_dapm_dai_link_get
,
4069 snd_soc_dapm_dai_link_put
),
4071 struct snd_kcontrol_new
*kcontrol_news
;
4072 const struct snd_soc_pcm_stream
*config
= params
;
4075 for (count
= 0 ; count
< num_params
; count
++) {
4076 if (!config
->stream_name
) {
4077 dev_warn(card
->dapm
.dev
,
4078 "ASoC: anonymous config %d for dai link %s\n",
4080 w_param_text
[count
] =
4081 devm_kasprintf(card
->dev
, GFP_KERNEL
,
4082 "Anonymous Configuration %d",
4085 w_param_text
[count
] = devm_kmemdup(card
->dev
,
4086 config
->stream_name
,
4087 strlen(config
->stream_name
) + 1,
4090 if (!w_param_text
[count
])
4091 goto outfree_w_param
;
4095 w_param_enum
[0].items
= num_params
;
4096 w_param_enum
[0].texts
= w_param_text
;
4099 (unsigned long) devm_kmemdup(card
->dev
,
4100 (void *)(kcontrol_dai_link
[0].private_value
),
4101 sizeof(struct soc_enum
), GFP_KERNEL
);
4102 if (!*private_value
) {
4103 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
4105 goto outfree_w_param
;
4107 kcontrol_dai_link
[0].private_value
= *private_value
;
4108 /* duplicate kcontrol_dai_link on heap so that memory persists */
4109 kcontrol_news
= devm_kmemdup(card
->dev
, &kcontrol_dai_link
[0],
4110 sizeof(struct snd_kcontrol_new
),
4112 if (!kcontrol_news
) {
4113 dev_err(card
->dev
, "ASoC: Failed to create control for %s widget\n",
4115 goto outfree_w_param
;
4117 return kcontrol_news
;
4120 snd_soc_dapm_free_kcontrol(card
, private_value
, num_params
, w_param_text
);
4124 static struct snd_soc_dapm_widget
*
4125 snd_soc_dapm_new_dai(struct snd_soc_card
*card
,
4126 struct snd_pcm_substream
*substream
,
4129 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
4130 struct snd_soc_dapm_widget
template;
4131 struct snd_soc_dapm_widget
*w
;
4132 const char **w_param_text
;
4133 unsigned long private_value
= 0;
4137 link_name
= devm_kasprintf(card
->dev
, GFP_KERNEL
, "%s-%s",
4138 rtd
->dai_link
->name
, id
);
4140 return ERR_PTR(-ENOMEM
);
4142 memset(&template, 0, sizeof(template));
4143 template.reg
= SND_SOC_NOPM
;
4144 template.id
= snd_soc_dapm_dai_link
;
4145 template.name
= link_name
;
4146 template.event
= snd_soc_dai_link_event
;
4147 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
4148 SND_SOC_DAPM_PRE_PMD
| SND_SOC_DAPM_POST_PMD
;
4149 template.kcontrol_news
= NULL
;
4151 /* allocate memory for control, only in case of multiple configs */
4152 if (rtd
->dai_link
->num_params
> 1) {
4153 w_param_text
= devm_kcalloc(card
->dev
,
4154 rtd
->dai_link
->num_params
,
4155 sizeof(char *), GFP_KERNEL
);
4156 if (!w_param_text
) {
4161 template.num_kcontrols
= 1;
4162 template.kcontrol_news
=
4163 snd_soc_dapm_alloc_kcontrol(card
,
4165 rtd
->dai_link
->params
,
4166 rtd
->dai_link
->num_params
,
4167 w_param_text
, &private_value
);
4168 if (!template.kcontrol_news
) {
4173 w_param_text
= NULL
;
4175 dev_dbg(card
->dev
, "ASoC: adding %s widget\n", link_name
);
4177 w
= snd_soc_dapm_new_control_unlocked(&card
->dapm
, &template);
4180 dev_err(rtd
->dev
, "ASoC: Failed to create %s widget: %d\n",
4182 goto outfree_kcontrol_news
;
4185 w
->priv
= substream
;
4189 outfree_kcontrol_news
:
4190 devm_kfree(card
->dev
, (void *)template.kcontrol_news
);
4191 snd_soc_dapm_free_kcontrol(card
, &private_value
,
4192 rtd
->dai_link
->num_params
, w_param_text
);
4194 devm_kfree(card
->dev
, link_name
);
4195 return ERR_PTR(ret
);
4198 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
4199 struct snd_soc_dai
*dai
)
4201 struct snd_soc_dapm_widget
template;
4202 struct snd_soc_dapm_widget
*w
;
4204 WARN_ON(dapm
->dev
!= dai
->dev
);
4206 memset(&template, 0, sizeof(template));
4207 template.reg
= SND_SOC_NOPM
;
4209 if (dai
->driver
->playback
.stream_name
) {
4210 template.id
= snd_soc_dapm_dai_in
;
4211 template.name
= dai
->driver
->playback
.stream_name
;
4212 template.sname
= dai
->driver
->playback
.stream_name
;
4214 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
4217 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
4222 dai
->playback_widget
= w
;
4225 if (dai
->driver
->capture
.stream_name
) {
4226 template.id
= snd_soc_dapm_dai_out
;
4227 template.name
= dai
->driver
->capture
.stream_name
;
4228 template.sname
= dai
->driver
->capture
.stream_name
;
4230 dev_dbg(dai
->dev
, "ASoC: adding %s widget\n",
4233 w
= snd_soc_dapm_new_control_unlocked(dapm
, &template);
4238 dai
->capture_widget
= w
;
4244 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
4246 struct snd_soc_dapm_widget
*dai_w
, *w
;
4247 struct snd_soc_dapm_widget
*src
, *sink
;
4248 struct snd_soc_dai
*dai
;
4250 /* For each DAI widget... */
4251 for_each_card_widgets(card
, dai_w
) {
4252 switch (dai_w
->id
) {
4253 case snd_soc_dapm_dai_in
:
4254 case snd_soc_dapm_dai_out
:
4260 /* let users know there is no DAI to link */
4262 dev_dbg(card
->dev
, "dai widget %s has no DAI\n",
4269 /* ...find all widgets with the same stream and link them */
4270 for_each_card_widgets(card
, w
) {
4271 if (w
->dapm
!= dai_w
->dapm
)
4275 case snd_soc_dapm_dai_in
:
4276 case snd_soc_dapm_dai_out
:
4282 if (!w
->sname
|| !strstr(w
->sname
, dai_w
->sname
))
4285 if (dai_w
->id
== snd_soc_dapm_dai_in
) {
4292 dev_dbg(dai
->dev
, "%s -> %s\n", src
->name
, sink
->name
);
4293 snd_soc_dapm_add_path(w
->dapm
, src
, sink
, NULL
, NULL
);
4300 static void dapm_connect_dai_routes(struct snd_soc_dapm_context
*dapm
,
4301 struct snd_soc_dai
*src_dai
,
4302 struct snd_soc_dapm_widget
*src
,
4303 struct snd_soc_dapm_widget
*dai
,
4304 struct snd_soc_dai
*sink_dai
,
4305 struct snd_soc_dapm_widget
*sink
)
4307 dev_dbg(dapm
->dev
, "connected DAI link %s:%s -> %s:%s\n",
4308 src_dai
->component
->name
, src
->name
,
4309 sink_dai
->component
->name
, sink
->name
);
4312 snd_soc_dapm_add_path(dapm
, src
, dai
, NULL
, NULL
);
4316 snd_soc_dapm_add_path(dapm
, src
, sink
, NULL
, NULL
);
4319 static void dapm_connect_dai_pair(struct snd_soc_card
*card
,
4320 struct snd_soc_pcm_runtime
*rtd
,
4321 struct snd_soc_dai
*codec_dai
,
4322 struct snd_soc_dai
*cpu_dai
)
4324 struct snd_soc_dai_link
*dai_link
= rtd
->dai_link
;
4325 struct snd_soc_dapm_widget
*dai
, *codec
, *playback_cpu
, *capture_cpu
;
4326 struct snd_pcm_substream
*substream
;
4327 struct snd_pcm_str
*streams
= rtd
->pcm
->streams
;
4329 if (dai_link
->params
) {
4330 playback_cpu
= cpu_dai
->capture_widget
;
4331 capture_cpu
= cpu_dai
->playback_widget
;
4333 playback_cpu
= cpu_dai
->playback_widget
;
4334 capture_cpu
= cpu_dai
->capture_widget
;
4337 /* connect BE DAI playback if widgets are valid */
4338 codec
= codec_dai
->playback_widget
;
4340 if (playback_cpu
&& codec
) {
4341 if (dai_link
->params
&& !dai_link
->playback_widget
) {
4342 substream
= streams
[SNDRV_PCM_STREAM_PLAYBACK
].substream
;
4343 dai
= snd_soc_dapm_new_dai(card
, substream
, "playback");
4346 dai_link
->playback_widget
= dai
;
4349 dapm_connect_dai_routes(&card
->dapm
, cpu_dai
, playback_cpu
,
4350 dai_link
->playback_widget
,
4355 /* connect BE DAI capture if widgets are valid */
4356 codec
= codec_dai
->capture_widget
;
4358 if (codec
&& capture_cpu
) {
4359 if (dai_link
->params
&& !dai_link
->capture_widget
) {
4360 substream
= streams
[SNDRV_PCM_STREAM_CAPTURE
].substream
;
4361 dai
= snd_soc_dapm_new_dai(card
, substream
, "capture");
4364 dai_link
->capture_widget
= dai
;
4367 dapm_connect_dai_routes(&card
->dapm
, codec_dai
, codec
,
4368 dai_link
->capture_widget
,
4369 cpu_dai
, capture_cpu
);
4373 static void soc_dapm_dai_stream_event(struct snd_soc_dai
*dai
, int stream
,
4376 struct snd_soc_dapm_widget
*w
;
4379 w
= snd_soc_dai_get_widget(dai
, stream
);
4382 dapm_mark_dirty(w
, "stream event");
4384 if (w
->id
== snd_soc_dapm_dai_in
) {
4385 ep
= SND_SOC_DAPM_EP_SOURCE
;
4386 dapm_widget_invalidate_input_paths(w
);
4388 ep
= SND_SOC_DAPM_EP_SINK
;
4389 dapm_widget_invalidate_output_paths(w
);
4393 case SND_SOC_DAPM_STREAM_START
:
4397 case SND_SOC_DAPM_STREAM_STOP
:
4401 case SND_SOC_DAPM_STREAM_SUSPEND
:
4402 case SND_SOC_DAPM_STREAM_RESUME
:
4403 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
4404 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
4410 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card
*card
)
4412 struct snd_soc_pcm_runtime
*rtd
;
4413 struct snd_soc_dai
*codec_dai
;
4416 /* for each BE DAI link... */
4417 for_each_card_rtds(card
, rtd
) {
4419 * dynamic FE links have no fixed DAI mapping.
4420 * CODEC<->CODEC links have no direct connection.
4422 if (rtd
->dai_link
->dynamic
)
4425 if (rtd
->num_cpus
== 1) {
4426 for_each_rtd_codec_dais(rtd
, i
, codec_dai
)
4427 dapm_connect_dai_pair(card
, rtd
, codec_dai
,
4428 asoc_rtd_to_cpu(rtd
, 0));
4429 } else if (rtd
->num_codecs
== rtd
->num_cpus
) {
4430 for_each_rtd_codec_dais(rtd
, i
, codec_dai
)
4431 dapm_connect_dai_pair(card
, rtd
, codec_dai
,
4432 asoc_rtd_to_cpu(rtd
, i
));
4435 "N cpus to M codecs link is not supported yet\n");
4440 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
4443 struct snd_soc_dai
*dai
;
4446 for_each_rtd_dais(rtd
, i
, dai
)
4447 soc_dapm_dai_stream_event(dai
, stream
, event
);
4449 dapm_power_widgets(rtd
->card
, event
);
4453 * snd_soc_dapm_stream_event - send a stream event to the dapm core
4454 * @rtd: PCM runtime data
4455 * @stream: stream name
4456 * @event: stream event
4458 * Sends a stream event to the dapm core. The core then makes any
4459 * necessary widget power changes.
4461 * Returns 0 for success else error.
4463 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
4466 struct snd_soc_card
*card
= rtd
->card
;
4468 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4469 soc_dapm_stream_event(rtd
, stream
, event
);
4470 mutex_unlock(&card
->dapm_mutex
);
4473 void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime
*rtd
, int stream
)
4475 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
4476 if (snd_soc_runtime_ignore_pmdown_time(rtd
)) {
4477 /* powered down playback stream now */
4478 snd_soc_dapm_stream_event(rtd
,
4479 SNDRV_PCM_STREAM_PLAYBACK
,
4480 SND_SOC_DAPM_STREAM_STOP
);
4482 /* start delayed pop wq here for playback streams */
4484 queue_delayed_work(system_power_efficient_wq
,
4486 msecs_to_jiffies(rtd
->pmdown_time
));
4489 /* capture streams can be powered down now */
4490 snd_soc_dapm_stream_event(rtd
, SNDRV_PCM_STREAM_CAPTURE
,
4491 SND_SOC_DAPM_STREAM_STOP
);
4494 EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_stop
);
4497 * snd_soc_dapm_enable_pin_unlocked - enable pin.
4498 * @dapm: DAPM context
4501 * Enables input/output pin and its parents or children widgets iff there is
4502 * a valid audio route and active audio stream.
4504 * Requires external locking.
4506 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4507 * do any widget power switching.
4509 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4512 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
4514 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked
);
4517 * snd_soc_dapm_enable_pin - enable pin.
4518 * @dapm: DAPM context
4521 * Enables input/output pin and its parents or children widgets iff there is
4522 * a valid audio route and active audio stream.
4524 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4525 * do any widget power switching.
4527 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
4531 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4533 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 1);
4535 mutex_unlock(&dapm
->card
->dapm_mutex
);
4539 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
4542 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
4543 * @dapm: DAPM context
4546 * Enables input/output pin regardless of any other state. This is
4547 * intended for use with microphone bias supplies used in microphone
4550 * Requires external locking.
4552 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4553 * do any widget power switching.
4555 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4558 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
4561 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4565 dev_dbg(w
->dapm
->dev
, "ASoC: force enable pin %s\n", pin
);
4566 if (!w
->connected
) {
4568 * w->force does not affect the number of input or output paths,
4569 * so we only have to recheck if w->connected is changed
4571 dapm_widget_invalidate_input_paths(w
);
4572 dapm_widget_invalidate_output_paths(w
);
4576 dapm_mark_dirty(w
, "force enable");
4580 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked
);
4583 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4584 * @dapm: DAPM context
4587 * Enables input/output pin regardless of any other state. This is
4588 * intended for use with microphone bias supplies used in microphone
4591 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4592 * do any widget power switching.
4594 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
4599 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4601 ret
= snd_soc_dapm_force_enable_pin_unlocked(dapm
, pin
);
4603 mutex_unlock(&dapm
->card
->dapm_mutex
);
4607 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
4610 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4611 * @dapm: DAPM context
4614 * Disables input/output pin and its parents or children widgets.
4616 * Requires external locking.
4618 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4619 * do any widget power switching.
4621 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4624 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4626 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked
);
4629 * snd_soc_dapm_disable_pin - disable pin.
4630 * @dapm: DAPM context
4633 * Disables input/output pin and its parents or children widgets.
4635 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4636 * do any widget power switching.
4638 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
4643 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4645 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4647 mutex_unlock(&dapm
->card
->dapm_mutex
);
4651 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
4654 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4655 * @dapm: DAPM context
4658 * Marks the specified pin as being not connected, disabling it along
4659 * any parent or child widgets. At present this is identical to
4660 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4661 * additional things such as disabling controls which only affect
4662 * paths through the pin.
4664 * Requires external locking.
4666 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4667 * do any widget power switching.
4669 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context
*dapm
,
4672 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
4674 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked
);
4677 * snd_soc_dapm_nc_pin - permanently disable pin.
4678 * @dapm: DAPM context
4681 * Marks the specified pin as being not connected, disabling it along
4682 * any parent or child widgets. At present this is identical to
4683 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4684 * additional things such as disabling controls which only affect
4685 * paths through the pin.
4687 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4688 * do any widget power switching.
4690 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
4694 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
4696 ret
= snd_soc_dapm_set_pin(dapm
, pin
, 0);
4698 mutex_unlock(&dapm
->card
->dapm_mutex
);
4702 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
4705 * snd_soc_dapm_get_pin_status - get audio pin status
4706 * @dapm: DAPM context
4707 * @pin: audio signal pin endpoint (or start point)
4709 * Get audio pin status - connected or disconnected.
4711 * Returns 1 for connected otherwise 0.
4713 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
4716 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
4719 return w
->connected
;
4723 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
4726 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4727 * @dapm: DAPM context
4728 * @pin: audio signal pin endpoint (or start point)
4730 * Mark the given endpoint or pin as ignoring suspend. When the
4731 * system is disabled a path between two endpoints flagged as ignoring
4732 * suspend will not be disabled. The path must already be enabled via
4733 * normal means at suspend time, it will not be turned on if it was not
4736 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
4739 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
4742 dev_err(dapm
->dev
, "ASoC: unknown pin %s\n", pin
);
4746 w
->ignore_suspend
= 1;
4750 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
4753 * snd_soc_dapm_free - free dapm resources
4754 * @dapm: DAPM context
4756 * Free all dapm widgets and resources.
4758 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
4760 dapm_debugfs_cleanup(dapm
);
4761 dapm_free_widgets(dapm
);
4762 list_del(&dapm
->list
);
4764 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
4766 void snd_soc_dapm_init(struct snd_soc_dapm_context
*dapm
,
4767 struct snd_soc_card
*card
,
4768 struct snd_soc_component
*component
)
4771 dapm
->component
= component
;
4772 dapm
->bias_level
= SND_SOC_BIAS_OFF
;
4775 dapm
->dev
= component
->dev
;
4776 dapm
->idle_bias_off
= !component
->driver
->idle_bias_on
,
4777 dapm
->suspend_bias_off
= component
->driver
->suspend_bias_off
;
4779 dapm
->dev
= card
->dev
;
4782 INIT_LIST_HEAD(&dapm
->list
);
4783 /* see for_each_card_dapms */
4784 list_add(&dapm
->list
, &card
->dapm_list
);
4786 EXPORT_SYMBOL_GPL(snd_soc_dapm_init
);
4788 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context
*dapm
)
4790 struct snd_soc_card
*card
= dapm
->card
;
4791 struct snd_soc_dapm_widget
*w
;
4792 LIST_HEAD(down_list
);
4795 mutex_lock(&card
->dapm_mutex
);
4797 for_each_card_widgets(dapm
->card
, w
) {
4798 if (w
->dapm
!= dapm
)
4801 dapm_seq_insert(w
, &down_list
, false);
4807 /* If there were no widgets to power down we're already in
4811 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
4812 snd_soc_dapm_set_bias_level(dapm
,
4813 SND_SOC_BIAS_PREPARE
);
4814 dapm_seq_run(card
, &down_list
, 0, false);
4815 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
4816 snd_soc_dapm_set_bias_level(dapm
,
4817 SND_SOC_BIAS_STANDBY
);
4820 mutex_unlock(&card
->dapm_mutex
);
4824 * snd_soc_dapm_shutdown - callback for system shutdown
4826 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
4828 struct snd_soc_dapm_context
*dapm
;
4830 for_each_card_dapms(card
, dapm
) {
4831 if (dapm
!= &card
->dapm
) {
4832 soc_dapm_shutdown_dapm(dapm
);
4833 if (dapm
->bias_level
== SND_SOC_BIAS_STANDBY
)
4834 snd_soc_dapm_set_bias_level(dapm
,
4839 soc_dapm_shutdown_dapm(&card
->dapm
);
4840 if (card
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
4841 snd_soc_dapm_set_bias_level(&card
->dapm
,
4845 /* Module information */
4846 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4847 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4848 MODULE_LICENSE("GPL");