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/moduleparam.h>
22 #include <linux/init.h>
23 #include <linux/async.h>
24 #include <linux/delay.h>
26 #include <linux/bitops.h>
27 #include <linux/platform_device.h>
28 #include <linux/jiffies.h>
29 #include <linux/debugfs.h>
30 #include <linux/pm_runtime.h>
31 #include <linux/regulator/consumer.h>
32 #include <linux/pinctrl/consumer.h>
33 #include <linux/clk.h>
34 #include <linux/slab.h>
35 #include <sound/core.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38 #include <sound/soc.h>
39 #include <sound/initval.h>
41 #include <trace/events/asoc.h>
43 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
45 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
46 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
48 #define snd_soc_dapm_for_each_direction(dir) \
49 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
52 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
53 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
55 int (*connected)(struct snd_soc_dapm_widget *source,
56 struct snd_soc_dapm_widget *sink));
58 struct snd_soc_dapm_widget *
59 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
60 const struct snd_soc_dapm_widget *widget);
62 struct snd_soc_dapm_widget *
63 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
64 const struct snd_soc_dapm_widget *widget);
66 /* dapm power sequences - make this per codec in the future */
67 static int dapm_up_seq[] = {
68 [snd_soc_dapm_pre] = 0,
69 [snd_soc_dapm_regulator_supply] = 1,
70 [snd_soc_dapm_pinctrl] = 1,
71 [snd_soc_dapm_clock_supply] = 1,
72 [snd_soc_dapm_supply] = 2,
73 [snd_soc_dapm_micbias] = 3,
74 [snd_soc_dapm_vmid] = 3,
75 [snd_soc_dapm_dai_link] = 2,
76 [snd_soc_dapm_dai_in] = 4,
77 [snd_soc_dapm_dai_out] = 4,
78 [snd_soc_dapm_aif_in] = 4,
79 [snd_soc_dapm_aif_out] = 4,
80 [snd_soc_dapm_mic] = 5,
81 [snd_soc_dapm_siggen] = 5,
82 [snd_soc_dapm_input] = 5,
83 [snd_soc_dapm_output] = 5,
84 [snd_soc_dapm_mux] = 6,
85 [snd_soc_dapm_demux] = 6,
86 [snd_soc_dapm_dac] = 7,
87 [snd_soc_dapm_switch] = 8,
88 [snd_soc_dapm_mixer] = 8,
89 [snd_soc_dapm_mixer_named_ctl] = 8,
90 [snd_soc_dapm_pga] = 9,
91 [snd_soc_dapm_buffer] = 9,
92 [snd_soc_dapm_scheduler] = 9,
93 [snd_soc_dapm_effect] = 9,
94 [snd_soc_dapm_src] = 9,
95 [snd_soc_dapm_asrc] = 9,
96 [snd_soc_dapm_encoder] = 9,
97 [snd_soc_dapm_decoder] = 9,
98 [snd_soc_dapm_adc] = 10,
99 [snd_soc_dapm_out_drv] = 11,
100 [snd_soc_dapm_hp] = 11,
101 [snd_soc_dapm_spk] = 11,
102 [snd_soc_dapm_line] = 11,
103 [snd_soc_dapm_sink] = 11,
104 [snd_soc_dapm_kcontrol] = 12,
105 [snd_soc_dapm_post] = 13,
108 static int dapm_down_seq[] = {
109 [snd_soc_dapm_pre] = 0,
110 [snd_soc_dapm_kcontrol] = 1,
111 [snd_soc_dapm_adc] = 2,
112 [snd_soc_dapm_hp] = 3,
113 [snd_soc_dapm_spk] = 3,
114 [snd_soc_dapm_line] = 3,
115 [snd_soc_dapm_out_drv] = 3,
116 [snd_soc_dapm_sink] = 3,
117 [snd_soc_dapm_pga] = 4,
118 [snd_soc_dapm_buffer] = 4,
119 [snd_soc_dapm_scheduler] = 4,
120 [snd_soc_dapm_effect] = 4,
121 [snd_soc_dapm_src] = 4,
122 [snd_soc_dapm_asrc] = 4,
123 [snd_soc_dapm_encoder] = 4,
124 [snd_soc_dapm_decoder] = 4,
125 [snd_soc_dapm_switch] = 5,
126 [snd_soc_dapm_mixer_named_ctl] = 5,
127 [snd_soc_dapm_mixer] = 5,
128 [snd_soc_dapm_dac] = 6,
129 [snd_soc_dapm_mic] = 7,
130 [snd_soc_dapm_siggen] = 7,
131 [snd_soc_dapm_input] = 7,
132 [snd_soc_dapm_output] = 7,
133 [snd_soc_dapm_micbias] = 8,
134 [snd_soc_dapm_vmid] = 8,
135 [snd_soc_dapm_mux] = 9,
136 [snd_soc_dapm_demux] = 9,
137 [snd_soc_dapm_aif_in] = 10,
138 [snd_soc_dapm_aif_out] = 10,
139 [snd_soc_dapm_dai_in] = 10,
140 [snd_soc_dapm_dai_out] = 10,
141 [snd_soc_dapm_dai_link] = 11,
142 [snd_soc_dapm_supply] = 12,
143 [snd_soc_dapm_clock_supply] = 13,
144 [snd_soc_dapm_pinctrl] = 13,
145 [snd_soc_dapm_regulator_supply] = 13,
146 [snd_soc_dapm_post] = 14,
149 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
151 if (dapm->card && dapm->card->instantiated)
152 lockdep_assert_held(&dapm->card->dapm_mutex);
155 static void pop_wait(u32 pop_time)
158 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 list_for_each_entry(w, &card->widgets, list) {
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 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
326 struct dapm_kcontrol_data {
328 struct snd_soc_dapm_widget *widget;
329 struct list_head paths;
330 struct snd_soc_dapm_widget_list *wlist;
333 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
334 struct snd_kcontrol *kcontrol, const char *ctrl_name)
336 struct dapm_kcontrol_data *data;
337 struct soc_mixer_control *mc;
342 data = kzalloc(sizeof(*data), GFP_KERNEL);
346 INIT_LIST_HEAD(&data->paths);
348 switch (widget->id) {
349 case snd_soc_dapm_switch:
350 case snd_soc_dapm_mixer:
351 case snd_soc_dapm_mixer_named_ctl:
352 mc = (struct soc_mixer_control *)kcontrol->private_value;
354 if (mc->autodisable && snd_soc_volsw_is_stereo(mc))
355 dev_warn(widget->dapm->dev,
356 "ASoC: Unsupported stereo autodisable control '%s'\n",
359 if (mc->autodisable) {
360 struct snd_soc_dapm_widget template;
362 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
369 memset(&template, 0, sizeof(template));
370 template.reg = mc->reg;
371 template.mask = (1 << fls(mc->max)) - 1;
372 template.shift = mc->shift;
374 template.off_val = mc->max;
376 template.off_val = 0;
377 template.on_val = template.off_val;
378 template.id = snd_soc_dapm_kcontrol;
379 template.name = name;
381 data->value = template.on_val;
384 snd_soc_dapm_new_control_unlocked(widget->dapm,
387 if (IS_ERR(data->widget)) {
388 ret = PTR_ERR(data->widget);
397 case snd_soc_dapm_demux:
398 case snd_soc_dapm_mux:
399 e = (struct soc_enum *)kcontrol->private_value;
401 if (e->autodisable) {
402 struct snd_soc_dapm_widget template;
404 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
411 memset(&template, 0, sizeof(template));
412 template.reg = e->reg;
413 template.mask = e->mask;
414 template.shift = e->shift_l;
415 template.off_val = snd_soc_enum_item_to_val(e, 0);
416 template.on_val = template.off_val;
417 template.id = snd_soc_dapm_kcontrol;
418 template.name = name;
420 data->value = template.on_val;
422 data->widget = snd_soc_dapm_new_control_unlocked(
423 widget->dapm, &template);
425 if (IS_ERR(data->widget)) {
426 ret = PTR_ERR(data->widget);
434 snd_soc_dapm_add_path(widget->dapm, data->widget,
442 kcontrol->private_data = data;
451 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
453 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
455 list_del(&data->paths);
460 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
461 const struct snd_kcontrol *kcontrol)
463 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
468 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
469 struct snd_soc_dapm_widget *widget)
471 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
472 struct snd_soc_dapm_widget_list *new_wlist;
476 n = data->wlist->num_widgets + 1;
480 new_wlist = krealloc(data->wlist,
481 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
485 new_wlist->widgets[n - 1] = widget;
486 new_wlist->num_widgets = n;
488 data->wlist = new_wlist;
493 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
494 struct snd_soc_dapm_path *path)
496 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
498 list_add_tail(&path->list_kcontrol, &data->paths);
501 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
503 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
508 return data->widget->power;
511 static struct list_head *dapm_kcontrol_get_path_list(
512 const struct snd_kcontrol *kcontrol)
514 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
519 #define dapm_kcontrol_for_each_path(path, kcontrol) \
520 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
523 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
525 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
529 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
531 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
534 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
536 if (data->value == value)
540 switch (dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->id) {
541 case snd_soc_dapm_switch:
542 case snd_soc_dapm_mixer:
543 case snd_soc_dapm_mixer_named_ctl:
544 data->widget->on_val = value & data->widget->mask;
546 case snd_soc_dapm_demux:
547 case snd_soc_dapm_mux:
548 data->widget->on_val = value >> data->widget->shift;
551 data->widget->on_val = value;
562 * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a
564 * @kcontrol: The kcontrol
566 struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
567 struct snd_kcontrol *kcontrol)
569 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
571 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);
574 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
576 * @kcontrol: The kcontrol
578 * Note: This function must only be used on kcontrols that are known to have
579 * been registered for a CODEC. Otherwise the behaviour is undefined.
581 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
582 struct snd_kcontrol *kcontrol)
584 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
586 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
588 static void dapm_reset(struct snd_soc_card *card)
590 struct snd_soc_dapm_widget *w;
592 lockdep_assert_held(&card->dapm_mutex);
594 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
596 list_for_each_entry(w, &card->widgets, list) {
597 w->new_power = w->power;
598 w->power_checked = false;
602 static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
604 if (!dapm->component)
606 return dapm->component->name_prefix;
609 static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
612 if (!dapm->component)
614 return snd_soc_component_read(dapm->component, reg, value);
617 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
618 int reg, unsigned int mask, unsigned int value)
620 if (!dapm->component)
622 return snd_soc_component_update_bits(dapm->component, reg,
626 static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
627 int reg, unsigned int mask, unsigned int value)
629 if (!dapm->component)
631 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
634 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
637 snd_soc_component_async_complete(dapm->component);
640 static struct snd_soc_dapm_widget *
641 dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
643 struct snd_soc_dapm_widget *w = wcache->widget;
644 struct list_head *wlist;
649 wlist = &w->dapm->card->widgets;
651 list_for_each_entry_from(w, wlist, list) {
652 if (!strcmp(name, w->name))
663 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
664 struct snd_soc_dapm_widget *w)
670 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
671 * @dapm: The DAPM context for which to set the level
672 * @level: The level to set
674 * Forces the DAPM bias level to a specific state. It will call the bias level
675 * callback of DAPM context with the specified level. This will even happen if
676 * the context is already at the same level. Furthermore it will not go through
677 * the normal bias level sequencing, meaning any intermediate states between the
678 * current and the target state will not be entered.
680 * Note that the change in bias level is only temporary and the next time
681 * snd_soc_dapm_sync() is called the state will be set to the level as
682 * determined by the DAPM core. The function is mainly intended to be used to
683 * used during probe or resume from suspend to power up the device so
684 * initialization can be done, before the DAPM core takes over.
686 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
687 enum snd_soc_bias_level level)
691 if (dapm->set_bias_level)
692 ret = dapm->set_bias_level(dapm, level);
695 dapm->bias_level = level;
699 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
702 * snd_soc_dapm_set_bias_level - set the bias level for the system
703 * @dapm: DAPM context
704 * @level: level to configure
706 * Configure the bias (power) levels for the SoC audio device.
708 * Returns 0 for success else error.
710 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
711 enum snd_soc_bias_level level)
713 struct snd_soc_card *card = dapm->card;
716 trace_snd_soc_bias_level_start(card, level);
718 if (card && card->set_bias_level)
719 ret = card->set_bias_level(card, dapm, level);
723 if (!card || dapm != &card->dapm)
724 ret = snd_soc_dapm_force_bias_level(dapm, level);
729 if (card && card->set_bias_level_post)
730 ret = card->set_bias_level_post(card, dapm, level);
732 trace_snd_soc_bias_level_done(card, level);
737 /* connect mux widget to its interconnecting audio paths */
738 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
739 struct snd_soc_dapm_path *path, const char *control_name,
740 struct snd_soc_dapm_widget *w)
742 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
743 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
744 unsigned int val, item;
747 if (e->reg != SND_SOC_NOPM) {
748 soc_dapm_read(dapm, e->reg, &val);
749 val = (val >> e->shift_l) & e->mask;
750 item = snd_soc_enum_val_to_item(e, val);
752 /* since a virtual mux has no backing registers to
753 * decide which path to connect, it will try to match
754 * with the first enumeration. This is to ensure
755 * that the default mux choice (the first) will be
756 * correctly powered up during initialization.
761 i = match_string(e->texts, e->items, control_name);
765 path->name = e->texts[i];
766 path->connect = (i == item);
771 /* set up initial codec paths */
772 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
775 struct soc_mixer_control *mc = (struct soc_mixer_control *)
776 p->sink->kcontrol_news[i].private_value;
777 unsigned int reg = mc->reg;
778 unsigned int shift = mc->shift;
779 unsigned int max = mc->max;
780 unsigned int mask = (1 << fls(max)) - 1;
781 unsigned int invert = mc->invert;
784 if (reg != SND_SOC_NOPM) {
785 soc_dapm_read(p->sink->dapm, reg, &val);
787 * The nth_path argument allows this function to know
788 * which path of a kcontrol it is setting the initial
789 * status for. Ideally this would support any number
790 * of paths and channels. But since kcontrols only come
791 * in mono and stereo variants, we are limited to 2
794 * The following code assumes for stereo controls the
795 * first path is the left channel, and all remaining
796 * paths are the right channel.
798 if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
800 soc_dapm_read(p->sink->dapm, mc->rreg, &val);
801 val = (val >> mc->rshift) & mask;
803 val = (val >> shift) & mask;
809 /* since a virtual mixer has no backing registers to
810 * decide which path to connect, it will try to match
811 * with initial state. This is to ensure
812 * that the default mixer choice will be
813 * correctly powered up during initialization.
819 /* connect mixer widget to its interconnecting audio paths */
820 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
821 struct snd_soc_dapm_path *path, const char *control_name)
825 /* search for mixer kcontrol */
826 for (i = 0; i < path->sink->num_kcontrols; i++) {
827 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
828 path->name = path->sink->kcontrol_news[i].name;
829 dapm_set_mixer_path_status(path, i, nth_path++);
836 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
837 struct snd_soc_dapm_widget *kcontrolw,
838 const struct snd_kcontrol_new *kcontrol_new,
839 struct snd_kcontrol **kcontrol)
841 struct snd_soc_dapm_widget *w;
846 list_for_each_entry(w, &dapm->card->widgets, list) {
847 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
849 for (i = 0; i < w->num_kcontrols; i++) {
850 if (&w->kcontrol_news[i] == kcontrol_new) {
852 *kcontrol = w->kcontrols[i];
862 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
863 * create it. Either way, add the widget into the control's widget list
865 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
868 struct snd_soc_dapm_context *dapm = w->dapm;
869 struct snd_card *card = dapm->card->snd_card;
873 struct snd_kcontrol *kcontrol;
874 bool wname_in_long_name, kcname_in_long_name;
875 char *long_name = NULL;
879 prefix = soc_dapm_prefix(dapm);
881 prefix_len = strlen(prefix) + 1;
885 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
890 wname_in_long_name = false;
891 kcname_in_long_name = true;
894 case snd_soc_dapm_switch:
895 case snd_soc_dapm_mixer:
896 case snd_soc_dapm_pga:
897 case snd_soc_dapm_out_drv:
898 wname_in_long_name = true;
899 kcname_in_long_name = true;
901 case snd_soc_dapm_mixer_named_ctl:
902 wname_in_long_name = false;
903 kcname_in_long_name = true;
905 case snd_soc_dapm_demux:
906 case snd_soc_dapm_mux:
907 wname_in_long_name = true;
908 kcname_in_long_name = false;
915 if (wname_in_long_name && kcname_in_long_name) {
917 * The control will get a prefix from the control
918 * creation process but we're also using the same
919 * prefix for widgets so cut the prefix off the
920 * front of the widget name.
922 long_name = kasprintf(GFP_KERNEL, "%s %s",
923 w->name + prefix_len,
924 w->kcontrol_news[kci].name);
925 if (long_name == NULL)
929 } else if (wname_in_long_name) {
931 name = w->name + prefix_len;
934 name = w->kcontrol_news[kci].name;
937 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
944 kcontrol->private_free = dapm_kcontrol_free;
946 ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
948 snd_ctl_free_one(kcontrol);
952 ret = snd_ctl_add(card, kcontrol);
955 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
961 ret = dapm_kcontrol_add_widget(kcontrol, w);
963 w->kcontrols[kci] = kcontrol;
971 /* create new dapm mixer control */
972 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
975 struct snd_soc_dapm_path *path;
976 struct dapm_kcontrol_data *data;
979 for (i = 0; i < w->num_kcontrols; i++) {
981 snd_soc_dapm_widget_for_each_source_path(w, path) {
982 /* mixer/mux paths name must match control name */
983 if (path->name != (char *)w->kcontrol_news[i].name)
986 if (!w->kcontrols[i]) {
987 ret = dapm_create_or_share_kcontrol(w, i);
992 dapm_kcontrol_add_path(w->kcontrols[i], path);
994 data = snd_kcontrol_chip(w->kcontrols[i]);
996 snd_soc_dapm_add_path(data->widget->dapm,
1006 /* create new dapm mux control */
1007 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
1009 struct snd_soc_dapm_context *dapm = w->dapm;
1010 enum snd_soc_dapm_direction dir;
1011 struct snd_soc_dapm_path *path;
1016 case snd_soc_dapm_mux:
1017 dir = SND_SOC_DAPM_DIR_OUT;
1020 case snd_soc_dapm_demux:
1021 dir = SND_SOC_DAPM_DIR_IN;
1028 if (w->num_kcontrols != 1) {
1030 "ASoC: %s %s has incorrect number of controls\n", type,
1035 if (list_empty(&w->edges[dir])) {
1036 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
1040 ret = dapm_create_or_share_kcontrol(w, 0);
1044 snd_soc_dapm_widget_for_each_path(w, dir, path) {
1046 dapm_kcontrol_add_path(w->kcontrols[0], path);
1052 /* create new dapm volume control */
1053 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
1057 for (i = 0; i < w->num_kcontrols; i++) {
1058 ret = dapm_create_or_share_kcontrol(w, i);
1066 /* create new dapm dai link control */
1067 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
1070 struct snd_kcontrol *kcontrol;
1071 struct snd_soc_dapm_context *dapm = w->dapm;
1072 struct snd_card *card = dapm->card->snd_card;
1074 /* create control for links with > 1 config */
1075 if (w->num_params <= 1)
1079 for (i = 0; i < w->num_kcontrols; i++) {
1080 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
1082 ret = snd_ctl_add(card, kcontrol);
1085 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1086 w->name, w->kcontrol_news[i].name, ret);
1089 kcontrol->private_data = w;
1090 w->kcontrols[i] = kcontrol;
1096 /* We implement power down on suspend by checking the power state of
1097 * the ALSA card - when we are suspending the ALSA state for the card
1100 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1102 int level = snd_power_get_state(widget->dapm->card->snd_card);
1105 case SNDRV_CTL_POWER_D3hot:
1106 case SNDRV_CTL_POWER_D3cold:
1107 if (widget->ignore_suspend)
1108 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1110 return widget->ignore_suspend;
1116 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1117 struct list_head *widgets)
1119 struct snd_soc_dapm_widget *w;
1120 struct list_head *it;
1121 unsigned int size = 0;
1124 list_for_each(it, widgets)
1127 *list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL);
1131 list_for_each_entry(w, widgets, work_list)
1132 (*list)->widgets[i++] = w;
1134 (*list)->num_widgets = i;
1140 * Common implementation for is_connected_output_ep() and
1141 * is_connected_input_ep(). The function is inlined since the combined size of
1142 * the two specialized functions is only marginally larger then the size of the
1143 * generic function and at the same time the fast path of the specialized
1144 * functions is significantly smaller than the generic function.
1146 static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1147 struct list_head *list, enum snd_soc_dapm_direction dir,
1148 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
1149 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1150 enum snd_soc_dapm_direction)),
1151 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1152 enum snd_soc_dapm_direction))
1154 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1155 struct snd_soc_dapm_path *path;
1158 if (widget->endpoints[dir] >= 0)
1159 return widget->endpoints[dir];
1161 DAPM_UPDATE_STAT(widget, path_checks);
1163 /* do we need to add this widget to the list ? */
1165 list_add_tail(&widget->work_list, list);
1167 if (custom_stop_condition && custom_stop_condition(widget, dir)) {
1169 custom_stop_condition = NULL;
1172 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1173 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1174 return widget->endpoints[dir];
1177 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1178 DAPM_UPDATE_STAT(widget, neighbour_checks);
1180 if (path->weak || path->is_supply)
1186 trace_snd_soc_dapm_path(widget, dir, path);
1188 if (path->connect) {
1190 con += fn(path->node[dir], list, custom_stop_condition);
1195 widget->endpoints[dir] = con;
1201 * Recursively check for a completed path to an active or physically connected
1202 * output widget. Returns number of complete paths.
1204 * Optionally, can be supplied with a function acting as a stopping condition.
1205 * This function takes the dapm widget currently being examined and the walk
1206 * direction as an arguments, it should return true if widgets from that point
1207 * in the graph onwards should not be added to the widget list.
1209 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1210 struct list_head *list,
1211 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1212 enum snd_soc_dapm_direction))
1214 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1215 is_connected_output_ep, custom_stop_condition);
1219 * Recursively check for a completed path to an active or physically connected
1220 * input widget. Returns number of complete paths.
1222 * Optionally, can be supplied with a function acting as a stopping condition.
1223 * This function takes the dapm widget currently being examined and the walk
1224 * direction as an arguments, it should return true if the walk should be
1225 * stopped and false otherwise.
1227 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1228 struct list_head *list,
1229 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1230 enum snd_soc_dapm_direction))
1232 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1233 is_connected_input_ep, custom_stop_condition);
1237 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1238 * @dai: the soc DAI.
1239 * @stream: stream direction.
1240 * @list: list of active widgets for this stream.
1241 * @custom_stop_condition: (optional) a function meant to stop the widget graph
1242 * walk based on custom logic.
1244 * Queries DAPM graph as to whether a valid audio stream path exists for
1245 * the initial stream specified by name. This takes into account
1246 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1248 * Optionally, can be supplied with a function acting as a stopping condition.
1249 * This function takes the dapm widget currently being examined and the walk
1250 * direction as an arguments, it should return true if the walk should be
1251 * stopped and false otherwise.
1253 * Returns the number of valid paths or negative error.
1255 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1256 struct snd_soc_dapm_widget_list **list,
1257 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1258 enum snd_soc_dapm_direction))
1260 struct snd_soc_card *card = dai->component->card;
1261 struct snd_soc_dapm_widget *w;
1266 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1269 * For is_connected_{output,input}_ep fully discover the graph we need
1270 * to reset the cached number of inputs and outputs.
1272 list_for_each_entry(w, &card->widgets, list) {
1273 w->endpoints[SND_SOC_DAPM_DIR_IN] = -1;
1274 w->endpoints[SND_SOC_DAPM_DIR_OUT] = -1;
1277 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1278 paths = is_connected_output_ep(dai->playback_widget, &widgets,
1279 custom_stop_condition);
1281 paths = is_connected_input_ep(dai->capture_widget, &widgets,
1282 custom_stop_condition);
1284 /* Drop starting point */
1285 list_del(widgets.next);
1287 ret = dapm_widget_list_create(list, &widgets);
1291 trace_snd_soc_dapm_connected(paths, stream);
1292 mutex_unlock(&card->dapm_mutex);
1298 * Handler for regulator supply widget.
1300 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1301 struct snd_kcontrol *kcontrol, int event)
1305 soc_dapm_async_complete(w->dapm);
1307 if (SND_SOC_DAPM_EVENT_ON(event)) {
1308 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1309 ret = regulator_allow_bypass(w->regulator, false);
1311 dev_warn(w->dapm->dev,
1312 "ASoC: Failed to unbypass %s: %d\n",
1316 return regulator_enable(w->regulator);
1318 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1319 ret = regulator_allow_bypass(w->regulator, true);
1321 dev_warn(w->dapm->dev,
1322 "ASoC: Failed to bypass %s: %d\n",
1326 return regulator_disable_deferred(w->regulator, w->shift);
1329 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1332 * Handler for pinctrl widget.
1334 int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
1335 struct snd_kcontrol *kcontrol, int event)
1337 struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
1338 struct pinctrl *p = w->pinctrl;
1339 struct pinctrl_state *s;
1344 if (SND_SOC_DAPM_EVENT_ON(event))
1345 s = pinctrl_lookup_state(p, priv->active_state);
1347 s = pinctrl_lookup_state(p, priv->sleep_state);
1352 return pinctrl_select_state(p, s);
1354 EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
1357 * Handler for clock supply widget.
1359 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1360 struct snd_kcontrol *kcontrol, int event)
1365 soc_dapm_async_complete(w->dapm);
1367 #ifdef CONFIG_HAVE_CLK
1368 if (SND_SOC_DAPM_EVENT_ON(event)) {
1369 return clk_prepare_enable(w->clk);
1371 clk_disable_unprepare(w->clk);
1377 EXPORT_SYMBOL_GPL(dapm_clock_event);
1379 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1381 if (w->power_checked)
1382 return w->new_power;
1387 w->new_power = w->power_check(w);
1389 w->power_checked = true;
1391 return w->new_power;
1394 /* Generic check to see if a widget should be powered. */
1395 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1399 DAPM_UPDATE_STAT(w, power_checks);
1401 in = is_connected_input_ep(w, NULL, NULL);
1402 out = is_connected_output_ep(w, NULL, NULL);
1403 return out != 0 && in != 0;
1406 /* Check to see if a power supply is needed */
1407 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1409 struct snd_soc_dapm_path *path;
1411 DAPM_UPDATE_STAT(w, power_checks);
1413 /* Check if one of our outputs is connected */
1414 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1415 DAPM_UPDATE_STAT(w, neighbour_checks);
1420 if (path->connected &&
1421 !path->connected(path->source, path->sink))
1424 if (dapm_widget_power_check(path->sink))
1431 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1433 return w->connected;
1436 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1437 struct snd_soc_dapm_widget *b,
1445 sort = dapm_down_seq;
1447 if (sort[a->id] != sort[b->id])
1448 return sort[a->id] - sort[b->id];
1449 if (a->subseq != b->subseq) {
1451 return a->subseq - b->subseq;
1453 return b->subseq - a->subseq;
1455 if (a->reg != b->reg)
1456 return a->reg - b->reg;
1457 if (a->dapm != b->dapm)
1458 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1463 /* Insert a widget in order into a DAPM power sequence. */
1464 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1465 struct list_head *list,
1468 struct snd_soc_dapm_widget *w;
1470 list_for_each_entry(w, list, power_list)
1471 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1472 list_add_tail(&new_widget->power_list, &w->power_list);
1476 list_add_tail(&new_widget->power_list, list);
1479 static void dapm_seq_check_event(struct snd_soc_card *card,
1480 struct snd_soc_dapm_widget *w, int event)
1482 const char *ev_name;
1486 case SND_SOC_DAPM_PRE_PMU:
1487 ev_name = "PRE_PMU";
1490 case SND_SOC_DAPM_POST_PMU:
1491 ev_name = "POST_PMU";
1494 case SND_SOC_DAPM_PRE_PMD:
1495 ev_name = "PRE_PMD";
1498 case SND_SOC_DAPM_POST_PMD:
1499 ev_name = "POST_PMD";
1502 case SND_SOC_DAPM_WILL_PMU:
1503 ev_name = "WILL_PMU";
1506 case SND_SOC_DAPM_WILL_PMD:
1507 ev_name = "WILL_PMD";
1511 WARN(1, "Unknown event %d\n", event);
1515 if (w->new_power != power)
1518 if (w->event && (w->event_flags & event)) {
1519 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1521 soc_dapm_async_complete(w->dapm);
1522 trace_snd_soc_dapm_widget_event_start(w, event);
1523 ret = w->event(w, NULL, event);
1524 trace_snd_soc_dapm_widget_event_done(w, event);
1526 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1527 ev_name, w->name, ret);
1531 /* Apply the coalesced changes from a DAPM sequence */
1532 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1533 struct list_head *pending)
1535 struct snd_soc_dapm_context *dapm;
1536 struct snd_soc_dapm_widget *w;
1538 unsigned int value = 0;
1539 unsigned int mask = 0;
1541 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1545 list_for_each_entry(w, pending, power_list) {
1546 WARN_ON(reg != w->reg || dapm != w->dapm);
1547 w->power = w->new_power;
1549 mask |= w->mask << w->shift;
1551 value |= w->on_val << w->shift;
1553 value |= w->off_val << w->shift;
1555 pop_dbg(dapm->dev, card->pop_time,
1556 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1557 w->name, reg, value, mask);
1559 /* Check for events */
1560 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1561 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1565 /* Any widget will do, they should all be updating the
1569 pop_dbg(dapm->dev, card->pop_time,
1570 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1571 value, mask, reg, card->pop_time);
1572 pop_wait(card->pop_time);
1573 soc_dapm_update_bits(dapm, reg, mask, value);
1576 list_for_each_entry(w, pending, power_list) {
1577 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1578 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1582 /* Apply a DAPM power sequence.
1584 * We walk over a pre-sorted list of widgets to apply power to. In
1585 * order to minimise the number of writes to the device required
1586 * multiple widgets will be updated in a single write where possible.
1587 * Currently anything that requires more than a single write is not
1590 static void dapm_seq_run(struct snd_soc_card *card,
1591 struct list_head *list, int event, bool power_up)
1593 struct snd_soc_dapm_widget *w, *n;
1594 struct snd_soc_dapm_context *d;
1597 int cur_subseq = -1;
1598 int cur_reg = SND_SOC_NOPM;
1599 struct snd_soc_dapm_context *cur_dapm = NULL;
1606 sort = dapm_down_seq;
1608 list_for_each_entry_safe(w, n, list, power_list) {
1611 /* Do we need to apply any queued changes? */
1612 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1613 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1614 if (!list_empty(&pending))
1615 dapm_seq_run_coalesced(card, &pending);
1617 if (cur_dapm && cur_dapm->seq_notifier) {
1618 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1619 if (sort[i] == cur_sort)
1620 cur_dapm->seq_notifier(cur_dapm,
1625 if (cur_dapm && w->dapm != cur_dapm)
1626 soc_dapm_async_complete(cur_dapm);
1628 INIT_LIST_HEAD(&pending);
1630 cur_subseq = INT_MIN;
1631 cur_reg = SND_SOC_NOPM;
1636 case snd_soc_dapm_pre:
1640 if (event == SND_SOC_DAPM_STREAM_START)
1642 NULL, SND_SOC_DAPM_PRE_PMU);
1643 else if (event == SND_SOC_DAPM_STREAM_STOP)
1645 NULL, SND_SOC_DAPM_PRE_PMD);
1648 case snd_soc_dapm_post:
1652 if (event == SND_SOC_DAPM_STREAM_START)
1654 NULL, SND_SOC_DAPM_POST_PMU);
1655 else if (event == SND_SOC_DAPM_STREAM_STOP)
1657 NULL, SND_SOC_DAPM_POST_PMD);
1661 /* Queue it up for application */
1662 cur_sort = sort[w->id];
1663 cur_subseq = w->subseq;
1666 list_move(&w->power_list, &pending);
1671 dev_err(w->dapm->dev,
1672 "ASoC: Failed to apply widget power: %d\n", ret);
1675 if (!list_empty(&pending))
1676 dapm_seq_run_coalesced(card, &pending);
1678 if (cur_dapm && cur_dapm->seq_notifier) {
1679 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1680 if (sort[i] == cur_sort)
1681 cur_dapm->seq_notifier(cur_dapm,
1685 list_for_each_entry(d, &card->dapm_list, list) {
1686 soc_dapm_async_complete(d);
1690 static void dapm_widget_update(struct snd_soc_card *card)
1692 struct snd_soc_dapm_update *update = card->update;
1693 struct snd_soc_dapm_widget_list *wlist;
1694 struct snd_soc_dapm_widget *w = NULL;
1698 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1701 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1703 for (wi = 0; wi < wlist->num_widgets; wi++) {
1704 w = wlist->widgets[wi];
1706 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1707 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1709 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1717 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1720 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1723 if (update->has_second_set) {
1724 ret = soc_dapm_update_bits(w->dapm, update->reg2,
1725 update->mask2, update->val2);
1727 dev_err(w->dapm->dev,
1728 "ASoC: %s DAPM update failed: %d\n",
1732 for (wi = 0; wi < wlist->num_widgets; wi++) {
1733 w = wlist->widgets[wi];
1735 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1736 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1738 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1744 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1745 * they're changing state.
1747 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1749 struct snd_soc_dapm_context *d = data;
1752 /* If we're off and we're not supposed to go into STANDBY */
1753 if (d->bias_level == SND_SOC_BIAS_OFF &&
1754 d->target_bias_level != SND_SOC_BIAS_OFF) {
1756 pm_runtime_get_sync(d->dev);
1758 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1761 "ASoC: Failed to turn on bias: %d\n", ret);
1764 /* Prepare for a transition to ON or away from ON */
1765 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1766 d->bias_level != SND_SOC_BIAS_ON) ||
1767 (d->target_bias_level != SND_SOC_BIAS_ON &&
1768 d->bias_level == SND_SOC_BIAS_ON)) {
1769 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1772 "ASoC: Failed to prepare bias: %d\n", ret);
1776 /* Async callback run prior to DAPM sequences - brings to their final
1779 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1781 struct snd_soc_dapm_context *d = data;
1784 /* If we just powered the last thing off drop to standby bias */
1785 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1786 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1787 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1788 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1790 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1794 /* If we're in standby and can support bias off then do that */
1795 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1796 d->target_bias_level == SND_SOC_BIAS_OFF) {
1797 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1799 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1803 pm_runtime_put(d->dev);
1806 /* If we just powered up then move to active bias */
1807 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1808 d->target_bias_level == SND_SOC_BIAS_ON) {
1809 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1811 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1816 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1817 bool power, bool connect)
1819 /* If a connection is being made or broken then that update
1820 * will have marked the peer dirty, otherwise the widgets are
1821 * not connected and this update has no impact. */
1825 /* If the peer is already in the state we're moving to then we
1826 * won't have an impact on it. */
1827 if (power != peer->power)
1828 dapm_mark_dirty(peer, "peer state change");
1831 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1832 struct list_head *up_list,
1833 struct list_head *down_list)
1835 struct snd_soc_dapm_path *path;
1837 if (w->power == power)
1840 trace_snd_soc_dapm_widget_power(w, power);
1842 /* If we changed our power state perhaps our neigbours changed
1845 snd_soc_dapm_widget_for_each_source_path(w, path)
1846 dapm_widget_set_peer_power(path->source, power, path->connect);
1848 /* Supplies can't affect their outputs, only their inputs */
1849 if (!w->is_supply) {
1850 snd_soc_dapm_widget_for_each_sink_path(w, path)
1851 dapm_widget_set_peer_power(path->sink, power,
1856 dapm_seq_insert(w, up_list, true);
1858 dapm_seq_insert(w, down_list, false);
1861 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1862 struct list_head *up_list,
1863 struct list_head *down_list)
1868 case snd_soc_dapm_pre:
1869 dapm_seq_insert(w, down_list, false);
1871 case snd_soc_dapm_post:
1872 dapm_seq_insert(w, up_list, true);
1876 power = dapm_widget_power_check(w);
1878 dapm_widget_set_power(w, power, up_list, down_list);
1883 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1885 if (dapm->idle_bias_off)
1888 switch (snd_power_get_state(dapm->card->snd_card)) {
1889 case SNDRV_CTL_POWER_D3hot:
1890 case SNDRV_CTL_POWER_D3cold:
1891 return dapm->suspend_bias_off;
1900 * Scan each dapm widget for complete audio path.
1901 * A complete path is a route that has valid endpoints i.e.:-
1903 * o DAC to output pin.
1904 * o Input pin to ADC.
1905 * o Input pin to Output pin (bypass, sidetone)
1906 * o DAC to ADC (loopback).
1908 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1910 struct snd_soc_dapm_widget *w;
1911 struct snd_soc_dapm_context *d;
1913 LIST_HEAD(down_list);
1914 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1915 enum snd_soc_bias_level bias;
1917 lockdep_assert_held(&card->dapm_mutex);
1919 trace_snd_soc_dapm_start(card);
1921 list_for_each_entry(d, &card->dapm_list, list) {
1922 if (dapm_idle_bias_off(d))
1923 d->target_bias_level = SND_SOC_BIAS_OFF;
1925 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1930 /* Check which widgets we need to power and store them in
1931 * lists indicating if they should be powered up or down. We
1932 * only check widgets that have been flagged as dirty but note
1933 * that new widgets may be added to the dirty list while we
1936 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1937 dapm_power_one_widget(w, &up_list, &down_list);
1940 list_for_each_entry(w, &card->widgets, list) {
1942 case snd_soc_dapm_pre:
1943 case snd_soc_dapm_post:
1944 /* These widgets always need to be powered */
1947 list_del_init(&w->dirty);
1954 /* Supplies and micbiases only bring the
1955 * context up to STANDBY as unless something
1956 * else is active and passing audio they
1957 * generally don't require full power. Signal
1958 * generators are virtual pins and have no
1959 * power impact themselves.
1962 case snd_soc_dapm_siggen:
1963 case snd_soc_dapm_vmid:
1965 case snd_soc_dapm_supply:
1966 case snd_soc_dapm_regulator_supply:
1967 case snd_soc_dapm_pinctrl:
1968 case snd_soc_dapm_clock_supply:
1969 case snd_soc_dapm_micbias:
1970 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1971 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1974 d->target_bias_level = SND_SOC_BIAS_ON;
1981 /* Force all contexts in the card to the same bias state if
1982 * they're not ground referenced.
1984 bias = SND_SOC_BIAS_OFF;
1985 list_for_each_entry(d, &card->dapm_list, list)
1986 if (d->target_bias_level > bias)
1987 bias = d->target_bias_level;
1988 list_for_each_entry(d, &card->dapm_list, list)
1989 if (!dapm_idle_bias_off(d))
1990 d->target_bias_level = bias;
1992 trace_snd_soc_dapm_walk_done(card);
1994 /* Run card bias changes at first */
1995 dapm_pre_sequence_async(&card->dapm, 0);
1996 /* Run other bias changes in parallel */
1997 list_for_each_entry(d, &card->dapm_list, list) {
1998 if (d != &card->dapm)
1999 async_schedule_domain(dapm_pre_sequence_async, d,
2002 async_synchronize_full_domain(&async_domain);
2004 list_for_each_entry(w, &down_list, power_list) {
2005 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
2008 list_for_each_entry(w, &up_list, power_list) {
2009 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
2012 /* Power down widgets first; try to avoid amplifying pops. */
2013 dapm_seq_run(card, &down_list, event, false);
2015 dapm_widget_update(card);
2018 dapm_seq_run(card, &up_list, event, true);
2020 /* Run all the bias changes in parallel */
2021 list_for_each_entry(d, &card->dapm_list, list) {
2022 if (d != &card->dapm)
2023 async_schedule_domain(dapm_post_sequence_async, d,
2026 async_synchronize_full_domain(&async_domain);
2027 /* Run card bias changes at last */
2028 dapm_post_sequence_async(&card->dapm, 0);
2030 /* do we need to notify any clients that DAPM event is complete */
2031 list_for_each_entry(d, &card->dapm_list, list) {
2032 if (d->stream_event)
2033 d->stream_event(d, event);
2036 pop_dbg(card->dev, card->pop_time,
2037 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
2038 pop_wait(card->pop_time);
2040 trace_snd_soc_dapm_done(card);
2045 #ifdef CONFIG_DEBUG_FS
2046 static ssize_t dapm_widget_power_read_file(struct file *file,
2047 char __user *user_buf,
2048 size_t count, loff_t *ppos)
2050 struct snd_soc_dapm_widget *w = file->private_data;
2051 struct snd_soc_card *card = w->dapm->card;
2052 enum snd_soc_dapm_direction dir, rdir;
2056 struct snd_soc_dapm_path *p = NULL;
2058 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2062 mutex_lock(&card->dapm_mutex);
2064 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
2069 in = is_connected_input_ep(w, NULL, NULL);
2070 out = is_connected_output_ep(w, NULL, NULL);
2073 ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
2074 w->name, w->power ? "On" : "Off",
2075 w->force ? " (forced)" : "", in, out);
2078 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2079 " - R%d(0x%x) mask 0x%x",
2080 w->reg, w->reg, w->mask << w->shift);
2082 ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
2085 ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
2087 w->active ? "active" : "inactive");
2089 snd_soc_dapm_for_each_direction(dir) {
2090 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
2091 snd_soc_dapm_widget_for_each_path(w, dir, p) {
2092 if (p->connected && !p->connected(p->source, p->sink))
2098 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2099 " %s \"%s\" \"%s\"\n",
2100 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
2101 p->name ? p->name : "static",
2102 p->node[rdir]->name);
2106 mutex_unlock(&card->dapm_mutex);
2108 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2114 static const struct file_operations dapm_widget_power_fops = {
2115 .open = simple_open,
2116 .read = dapm_widget_power_read_file,
2117 .llseek = default_llseek,
2120 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2121 size_t count, loff_t *ppos)
2123 struct snd_soc_dapm_context *dapm = file->private_data;
2126 switch (dapm->bias_level) {
2127 case SND_SOC_BIAS_ON:
2130 case SND_SOC_BIAS_PREPARE:
2131 level = "Prepare\n";
2133 case SND_SOC_BIAS_STANDBY:
2134 level = "Standby\n";
2136 case SND_SOC_BIAS_OFF:
2140 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2141 level = "Unknown\n";
2145 return simple_read_from_buffer(user_buf, count, ppos, level,
2149 static const struct file_operations dapm_bias_fops = {
2150 .open = simple_open,
2151 .read = dapm_bias_read_file,
2152 .llseek = default_llseek,
2155 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2156 struct dentry *parent)
2160 if (!parent || IS_ERR(parent))
2163 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2165 if (IS_ERR(dapm->debugfs_dapm)) {
2167 "ASoC: Failed to create DAPM debugfs directory %ld\n",
2168 PTR_ERR(dapm->debugfs_dapm));
2172 d = debugfs_create_file("bias_level", 0444,
2173 dapm->debugfs_dapm, dapm,
2177 "ASoC: Failed to create bias level debugfs file: %ld\n",
2181 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2183 struct snd_soc_dapm_context *dapm = w->dapm;
2186 if (!dapm->debugfs_dapm || !w->name)
2189 d = debugfs_create_file(w->name, 0444,
2190 dapm->debugfs_dapm, w,
2191 &dapm_widget_power_fops);
2193 dev_warn(w->dapm->dev,
2194 "ASoC: Failed to create %s debugfs file: %ld\n",
2195 w->name, PTR_ERR(d));
2198 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2200 debugfs_remove_recursive(dapm->debugfs_dapm);
2204 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2205 struct dentry *parent)
2209 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2213 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2220 * soc_dapm_connect_path() - Connects or disconnects a path
2221 * @path: The path to update
2222 * @connect: The new connect state of the path. True if the path is connected,
2223 * false if it is disconnected.
2224 * @reason: The reason why the path changed (for debugging only)
2226 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2227 bool connect, const char *reason)
2229 if (path->connect == connect)
2232 path->connect = connect;
2233 dapm_mark_dirty(path->source, reason);
2234 dapm_mark_dirty(path->sink, reason);
2235 dapm_path_invalidate(path);
2238 /* test and update the power status of a mux widget */
2239 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2240 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2242 struct snd_soc_dapm_path *path;
2246 lockdep_assert_held(&card->dapm_mutex);
2248 /* find dapm widget path assoc with kcontrol */
2249 dapm_kcontrol_for_each_path(path, kcontrol) {
2251 /* we now need to match the string in the enum to the path */
2252 if (!(strcmp(path->name, e->texts[mux])))
2257 soc_dapm_connect_path(path, connect, "mux update");
2261 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2266 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2267 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2268 struct snd_soc_dapm_update *update)
2270 struct snd_soc_card *card = dapm->card;
2273 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2274 card->update = update;
2275 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2276 card->update = NULL;
2277 mutex_unlock(&card->dapm_mutex);
2279 soc_dpcm_runtime_update(card);
2282 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2284 /* test and update the power status of a mixer or switch widget */
2285 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2286 struct snd_kcontrol *kcontrol,
2287 int connect, int rconnect)
2289 struct snd_soc_dapm_path *path;
2292 lockdep_assert_held(&card->dapm_mutex);
2294 /* find dapm widget path assoc with kcontrol */
2295 dapm_kcontrol_for_each_path(path, kcontrol) {
2297 * Ideally this function should support any number of
2298 * paths and channels. But since kcontrols only come
2299 * in mono and stereo variants, we are limited to 2
2302 * The following code assumes for stereo controls the
2303 * first path (when 'found == 0') is the left channel,
2304 * and all remaining paths (when 'found == 1') are the
2307 * A stereo control is signified by a valid 'rconnect'
2308 * value, either 0 for unconnected, or >= 0 for connected.
2309 * This is chosen instead of using snd_soc_volsw_is_stereo,
2310 * so that the behavior of snd_soc_dapm_mixer_update_power
2311 * doesn't change even when the kcontrol passed in is
2314 * It passes 'connect' as the path connect status for
2315 * the left channel, and 'rconnect' for the right
2318 if (found && rconnect >= 0)
2319 soc_dapm_connect_path(path, rconnect, "mixer update");
2321 soc_dapm_connect_path(path, connect, "mixer update");
2326 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2331 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2332 struct snd_kcontrol *kcontrol, int connect,
2333 struct snd_soc_dapm_update *update)
2335 struct snd_soc_card *card = dapm->card;
2338 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2339 card->update = update;
2340 ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
2341 card->update = NULL;
2342 mutex_unlock(&card->dapm_mutex);
2344 soc_dpcm_runtime_update(card);
2347 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2349 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2352 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2353 struct snd_soc_dapm_widget *w;
2355 char *state = "not set";
2357 /* card won't be set for the dummy component, as a spot fix
2358 * we're checking for that case specifically here but in future
2359 * we will ensure that the dummy component looks like others.
2364 list_for_each_entry(w, &cmpnt->card->widgets, list) {
2365 if (w->dapm != dapm)
2368 /* only display widgets that burn power */
2370 case snd_soc_dapm_hp:
2371 case snd_soc_dapm_mic:
2372 case snd_soc_dapm_spk:
2373 case snd_soc_dapm_line:
2374 case snd_soc_dapm_micbias:
2375 case snd_soc_dapm_dac:
2376 case snd_soc_dapm_adc:
2377 case snd_soc_dapm_pga:
2378 case snd_soc_dapm_out_drv:
2379 case snd_soc_dapm_mixer:
2380 case snd_soc_dapm_mixer_named_ctl:
2381 case snd_soc_dapm_supply:
2382 case snd_soc_dapm_regulator_supply:
2383 case snd_soc_dapm_pinctrl:
2384 case snd_soc_dapm_clock_supply:
2386 count += sprintf(buf + count, "%s: %s\n",
2387 w->name, w->power ? "On":"Off");
2394 switch (snd_soc_dapm_get_bias_level(dapm)) {
2395 case SND_SOC_BIAS_ON:
2398 case SND_SOC_BIAS_PREPARE:
2401 case SND_SOC_BIAS_STANDBY:
2404 case SND_SOC_BIAS_OFF:
2408 count += sprintf(buf + count, "PM State: %s\n", state);
2413 /* show dapm widget status in sys fs */
2414 static ssize_t dapm_widget_show(struct device *dev,
2415 struct device_attribute *attr, char *buf)
2417 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2420 mutex_lock(&rtd->card->dapm_mutex);
2422 for (i = 0; i < rtd->num_codecs; i++) {
2423 struct snd_soc_component *cmpnt = rtd->codec_dais[i]->component;
2425 count += dapm_widget_show_component(cmpnt, buf + count);
2428 mutex_unlock(&rtd->card->dapm_mutex);
2433 static DEVICE_ATTR_RO(dapm_widget);
2435 struct attribute *soc_dapm_dev_attrs[] = {
2436 &dev_attr_dapm_widget.attr,
2440 static void dapm_free_path(struct snd_soc_dapm_path *path)
2442 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2443 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2444 list_del(&path->list_kcontrol);
2445 list_del(&path->list);
2449 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2451 struct snd_soc_dapm_path *p, *next_p;
2452 enum snd_soc_dapm_direction dir;
2455 list_del(&w->dirty);
2457 * remove source and sink paths associated to this widget.
2458 * While removing the path, remove reference to it from both
2459 * source and sink widgets so that path is removed only once.
2461 snd_soc_dapm_for_each_direction(dir) {
2462 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2466 kfree(w->kcontrols);
2467 kfree_const(w->name);
2471 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
2473 dapm->path_sink_cache.widget = NULL;
2474 dapm->path_source_cache.widget = NULL;
2477 /* free all dapm widgets and resources */
2478 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2480 struct snd_soc_dapm_widget *w, *next_w;
2482 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2483 if (w->dapm != dapm)
2485 snd_soc_dapm_free_widget(w);
2487 snd_soc_dapm_reset_cache(dapm);
2490 static struct snd_soc_dapm_widget *dapm_find_widget(
2491 struct snd_soc_dapm_context *dapm, const char *pin,
2492 bool search_other_contexts)
2494 struct snd_soc_dapm_widget *w;
2495 struct snd_soc_dapm_widget *fallback = NULL;
2497 list_for_each_entry(w, &dapm->card->widgets, list) {
2498 if (!strcmp(w->name, pin)) {
2499 if (w->dapm == dapm)
2506 if (search_other_contexts)
2513 * set the DAPM pin status:
2514 * returns 1 when the value has been updated, 0 when unchanged, or a negative
2515 * error code; called from kcontrol put callback
2517 static int __snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2518 const char *pin, int status)
2520 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2523 dapm_assert_locked(dapm);
2526 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2530 if (w->connected != status) {
2531 dapm_mark_dirty(w, "pin configuration");
2532 dapm_widget_invalidate_input_paths(w);
2533 dapm_widget_invalidate_output_paths(w);
2537 w->connected = status;
2545 * similar as __snd_soc_dapm_set_pin(), but returns 0 when successful;
2546 * called from several API functions below
2548 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2549 const char *pin, int status)
2551 int ret = __snd_soc_dapm_set_pin(dapm, pin, status);
2553 return ret < 0 ? ret : 0;
2557 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2558 * @dapm: DAPM context
2560 * Walks all dapm audio paths and powers widgets according to their
2561 * stream or path usage.
2563 * Requires external locking.
2565 * Returns 0 for success.
2567 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2570 * Suppress early reports (eg, jacks syncing their state) to avoid
2571 * silly DAPM runs during card startup.
2573 if (!dapm->card || !dapm->card->instantiated)
2576 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2578 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2581 * snd_soc_dapm_sync - scan and power dapm paths
2582 * @dapm: DAPM context
2584 * Walks all dapm audio paths and powers widgets according to their
2585 * stream or path usage.
2587 * Returns 0 for success.
2589 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2593 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2594 ret = snd_soc_dapm_sync_unlocked(dapm);
2595 mutex_unlock(&dapm->card->dapm_mutex);
2598 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2601 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2602 * @w: The widget for which to update the flags
2604 * Some widgets have a dynamic category which depends on which neighbors they
2605 * are connected to. This function update the category for these widgets.
2607 * This function must be called whenever a path is added or removed to a widget.
2609 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2611 enum snd_soc_dapm_direction dir;
2612 struct snd_soc_dapm_path *p;
2616 case snd_soc_dapm_input:
2617 /* On a fully routed card an input is never a source */
2618 if (w->dapm->card->fully_routed)
2620 ep = SND_SOC_DAPM_EP_SOURCE;
2621 snd_soc_dapm_widget_for_each_source_path(w, p) {
2622 if (p->source->id == snd_soc_dapm_micbias ||
2623 p->source->id == snd_soc_dapm_mic ||
2624 p->source->id == snd_soc_dapm_line ||
2625 p->source->id == snd_soc_dapm_output) {
2631 case snd_soc_dapm_output:
2632 /* On a fully routed card a output is never a sink */
2633 if (w->dapm->card->fully_routed)
2635 ep = SND_SOC_DAPM_EP_SINK;
2636 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2637 if (p->sink->id == snd_soc_dapm_spk ||
2638 p->sink->id == snd_soc_dapm_hp ||
2639 p->sink->id == snd_soc_dapm_line ||
2640 p->sink->id == snd_soc_dapm_input) {
2646 case snd_soc_dapm_line:
2648 snd_soc_dapm_for_each_direction(dir) {
2649 if (!list_empty(&w->edges[dir]))
2650 ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
2660 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2661 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2662 const char *control)
2664 bool dynamic_source = false;
2665 bool dynamic_sink = false;
2670 switch (source->id) {
2671 case snd_soc_dapm_demux:
2672 dynamic_source = true;
2679 case snd_soc_dapm_mux:
2680 case snd_soc_dapm_switch:
2681 case snd_soc_dapm_mixer:
2682 case snd_soc_dapm_mixer_named_ctl:
2683 dynamic_sink = true;
2689 if (dynamic_source && dynamic_sink) {
2691 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2692 source->name, control, sink->name);
2694 } else if (!dynamic_source && !dynamic_sink) {
2696 "Control not supported for path %s -> [%s] -> %s\n",
2697 source->name, control, sink->name);
2704 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2705 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2706 const char *control,
2707 int (*connected)(struct snd_soc_dapm_widget *source,
2708 struct snd_soc_dapm_widget *sink))
2710 struct snd_soc_dapm_widget *widgets[2];
2711 enum snd_soc_dapm_direction dir;
2712 struct snd_soc_dapm_path *path;
2715 if (wsink->is_supply && !wsource->is_supply) {
2717 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2718 wsource->name, wsink->name);
2722 if (connected && !wsource->is_supply) {
2724 "connected() callback only supported for supply widgets (%s -> %s)\n",
2725 wsource->name, wsink->name);
2729 if (wsource->is_supply && control) {
2731 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2732 wsource->name, control, wsink->name);
2736 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2740 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2744 path->node[SND_SOC_DAPM_DIR_IN] = wsource;
2745 path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
2746 widgets[SND_SOC_DAPM_DIR_IN] = wsource;
2747 widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
2749 path->connected = connected;
2750 INIT_LIST_HEAD(&path->list);
2751 INIT_LIST_HEAD(&path->list_kcontrol);
2753 if (wsource->is_supply || wsink->is_supply)
2754 path->is_supply = 1;
2756 /* connect static paths */
2757 if (control == NULL) {
2760 switch (wsource->id) {
2761 case snd_soc_dapm_demux:
2762 ret = dapm_connect_mux(dapm, path, control, wsource);
2770 switch (wsink->id) {
2771 case snd_soc_dapm_mux:
2772 ret = dapm_connect_mux(dapm, path, control, wsink);
2776 case snd_soc_dapm_switch:
2777 case snd_soc_dapm_mixer:
2778 case snd_soc_dapm_mixer_named_ctl:
2779 ret = dapm_connect_mixer(dapm, path, control);
2788 list_add(&path->list, &dapm->card->paths);
2789 snd_soc_dapm_for_each_direction(dir)
2790 list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
2792 snd_soc_dapm_for_each_direction(dir) {
2793 dapm_update_widget_flags(widgets[dir]);
2794 dapm_mark_dirty(widgets[dir], "Route added");
2797 if (dapm->card->instantiated && path->connect)
2798 dapm_path_invalidate(path);
2806 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2807 const struct snd_soc_dapm_route *route)
2809 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2810 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2813 char prefixed_sink[80];
2814 char prefixed_source[80];
2818 prefix = soc_dapm_prefix(dapm);
2820 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2821 prefix, route->sink);
2822 sink = prefixed_sink;
2823 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2824 prefix, route->source);
2825 source = prefixed_source;
2828 source = route->source;
2831 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2832 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2834 if (wsink && wsource)
2838 * find src and dest widgets over all widgets but favor a widget from
2839 * current DAPM context
2841 list_for_each_entry(w, &dapm->card->widgets, list) {
2842 if (!wsink && !(strcmp(w->name, sink))) {
2844 if (w->dapm == dapm) {
2851 if (!wsource && !(strcmp(w->name, source))) {
2853 if (w->dapm == dapm) {
2860 /* use widget from another DAPM context if not found from this */
2866 if (wsource == NULL) {
2867 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2871 if (wsink == NULL) {
2872 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2878 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2879 dapm_wcache_update(&dapm->path_source_cache, wsource);
2881 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2888 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2889 source, route->control, sink);
2893 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2894 const struct snd_soc_dapm_route *route)
2896 struct snd_soc_dapm_widget *wsource, *wsink;
2897 struct snd_soc_dapm_path *path, *p;
2900 char prefixed_sink[80];
2901 char prefixed_source[80];
2904 if (route->control) {
2906 "ASoC: Removal of routes with controls not supported\n");
2910 prefix = soc_dapm_prefix(dapm);
2912 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2913 prefix, route->sink);
2914 sink = prefixed_sink;
2915 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2916 prefix, route->source);
2917 source = prefixed_source;
2920 source = route->source;
2924 list_for_each_entry(p, &dapm->card->paths, list) {
2925 if (strcmp(p->source->name, source) != 0)
2927 if (strcmp(p->sink->name, sink) != 0)
2934 wsource = path->source;
2937 dapm_mark_dirty(wsource, "Route removed");
2938 dapm_mark_dirty(wsink, "Route removed");
2940 dapm_path_invalidate(path);
2942 dapm_free_path(path);
2944 /* Update any path related flags */
2945 dapm_update_widget_flags(wsource);
2946 dapm_update_widget_flags(wsink);
2948 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2956 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2957 * @dapm: DAPM context
2958 * @route: audio routes
2959 * @num: number of routes
2961 * Connects 2 dapm widgets together via a named audio path. The sink is
2962 * the widget receiving the audio signal, whilst the source is the sender
2963 * of the audio signal.
2965 * Returns 0 for success else error. On error all resources can be freed
2966 * with a call to snd_soc_card_free().
2968 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2969 const struct snd_soc_dapm_route *route, int num)
2973 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2974 for (i = 0; i < num; i++) {
2975 r = snd_soc_dapm_add_route(dapm, route);
2977 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2979 route->control ? route->control : "direct",
2985 mutex_unlock(&dapm->card->dapm_mutex);
2989 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2992 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2993 * @dapm: DAPM context
2994 * @route: audio routes
2995 * @num: number of routes
2997 * Removes routes from the DAPM context.
2999 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
3000 const struct snd_soc_dapm_route *route, int num)
3004 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3005 for (i = 0; i < num; i++) {
3006 snd_soc_dapm_del_route(dapm, route);
3009 mutex_unlock(&dapm->card->dapm_mutex);
3013 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
3015 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
3016 const struct snd_soc_dapm_route *route)
3018 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
3021 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
3024 struct snd_soc_dapm_path *path;
3028 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
3034 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
3039 if (route->control || route->connected)
3040 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
3041 route->source, route->sink);
3043 snd_soc_dapm_widget_for_each_sink_path(source, path) {
3044 if (path->sink == sink) {
3051 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
3052 route->source, route->sink);
3054 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
3055 count, route->source, route->sink);
3061 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
3062 * @dapm: DAPM context
3063 * @route: audio routes
3064 * @num: number of routes
3066 * Mark existing routes matching those specified in the passed array
3067 * as being weak, meaning that they are ignored for the purpose of
3068 * power decisions. The main intended use case is for sidetone paths
3069 * which couple audio between other independent paths if they are both
3070 * active in order to make the combination work better at the user
3071 * level but which aren't intended to be "used".
3073 * Note that CODEC drivers should not use this as sidetone type paths
3074 * can frequently also be used as bypass paths.
3076 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
3077 const struct snd_soc_dapm_route *route, int num)
3082 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3083 for (i = 0; i < num; i++) {
3084 err = snd_soc_dapm_weak_route(dapm, route);
3089 mutex_unlock(&dapm->card->dapm_mutex);
3093 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
3096 * snd_soc_dapm_new_widgets - add new dapm widgets
3097 * @card: card to be checked for new dapm widgets
3099 * Checks the codec for any new dapm widgets and creates them if found.
3101 * Returns 0 for success.
3103 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
3105 struct snd_soc_dapm_widget *w;
3108 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3110 list_for_each_entry(w, &card->widgets, list)
3115 if (w->num_kcontrols) {
3116 w->kcontrols = kcalloc(w->num_kcontrols,
3117 sizeof(struct snd_kcontrol *),
3119 if (!w->kcontrols) {
3120 mutex_unlock(&card->dapm_mutex);
3126 case snd_soc_dapm_switch:
3127 case snd_soc_dapm_mixer:
3128 case snd_soc_dapm_mixer_named_ctl:
3131 case snd_soc_dapm_mux:
3132 case snd_soc_dapm_demux:
3135 case snd_soc_dapm_pga:
3136 case snd_soc_dapm_out_drv:
3139 case snd_soc_dapm_dai_link:
3140 dapm_new_dai_link(w);
3146 /* Read the initial power state from the device */
3148 soc_dapm_read(w->dapm, w->reg, &val);
3149 val = val >> w->shift;
3151 if (val == w->on_val)
3157 dapm_mark_dirty(w, "new widget");
3158 dapm_debugfs_add_widget(w);
3161 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
3162 mutex_unlock(&card->dapm_mutex);
3165 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
3168 * snd_soc_dapm_get_volsw - dapm mixer get callback
3169 * @kcontrol: mixer control
3170 * @ucontrol: control element information
3172 * Callback to get the value of a dapm mixer control.
3174 * Returns 0 for success.
3176 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
3177 struct snd_ctl_elem_value *ucontrol)
3179 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3180 struct snd_soc_card *card = dapm->card;
3181 struct soc_mixer_control *mc =
3182 (struct soc_mixer_control *)kcontrol->private_value;
3184 unsigned int shift = mc->shift;
3186 unsigned int width = fls(max);
3187 unsigned int mask = (1 << fls(max)) - 1;
3188 unsigned int invert = mc->invert;
3189 unsigned int reg_val, val, rval = 0;
3192 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3193 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
3194 ret = soc_dapm_read(dapm, reg, ®_val);
3195 val = (reg_val >> shift) & mask;
3197 if (ret == 0 && reg != mc->rreg)
3198 ret = soc_dapm_read(dapm, mc->rreg, ®_val);
3200 if (snd_soc_volsw_is_stereo(mc))
3201 rval = (reg_val >> mc->rshift) & mask;
3203 reg_val = dapm_kcontrol_get_value(kcontrol);
3204 val = reg_val & mask;
3206 if (snd_soc_volsw_is_stereo(mc))
3207 rval = (reg_val >> width) & mask;
3209 mutex_unlock(&card->dapm_mutex);
3215 ucontrol->value.integer.value[0] = max - val;
3217 ucontrol->value.integer.value[0] = val;
3219 if (snd_soc_volsw_is_stereo(mc)) {
3221 ucontrol->value.integer.value[1] = max - rval;
3223 ucontrol->value.integer.value[1] = rval;
3228 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
3231 * snd_soc_dapm_put_volsw - dapm mixer set callback
3232 * @kcontrol: mixer control
3233 * @ucontrol: control element information
3235 * Callback to set the value of a dapm mixer control.
3237 * Returns 0 for success.
3239 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3240 struct snd_ctl_elem_value *ucontrol)
3242 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3243 struct snd_soc_card *card = dapm->card;
3244 struct soc_mixer_control *mc =
3245 (struct soc_mixer_control *)kcontrol->private_value;
3247 unsigned int shift = mc->shift;
3249 unsigned int width = fls(max);
3250 unsigned int mask = (1 << width) - 1;
3251 unsigned int invert = mc->invert;
3252 unsigned int val, rval = 0;
3253 int connect, rconnect = -1, change, reg_change = 0;
3254 struct snd_soc_dapm_update update = {};
3257 val = (ucontrol->value.integer.value[0] & mask);
3263 if (snd_soc_volsw_is_stereo(mc)) {
3264 rval = (ucontrol->value.integer.value[1] & mask);
3270 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3272 /* This assumes field width < (bits in unsigned int / 2) */
3273 if (width > sizeof(unsigned int) * 8 / 2)
3275 "ASoC: control %s field width limit exceeded\n",
3277 change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));
3279 if (reg != SND_SOC_NOPM) {
3281 rval = rval << mc->rshift;
3283 reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);
3285 if (snd_soc_volsw_is_stereo(mc))
3286 reg_change |= soc_dapm_test_bits(dapm, mc->rreg,
3291 if (change || reg_change) {
3293 if (snd_soc_volsw_is_stereo(mc)) {
3294 update.has_second_set = true;
3295 update.reg2 = mc->rreg;
3296 update.mask2 = mask << mc->rshift;
3299 update.kcontrol = kcontrol;
3301 update.mask = mask << shift;
3303 card->update = &update;
3305 change |= reg_change;
3307 ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
3310 card->update = NULL;
3313 mutex_unlock(&card->dapm_mutex);
3316 soc_dpcm_runtime_update(card);
3320 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3323 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3324 * @kcontrol: mixer control
3325 * @ucontrol: control element information
3327 * Callback to get the value of a dapm enumerated double mixer control.
3329 * Returns 0 for success.
3331 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3332 struct snd_ctl_elem_value *ucontrol)
3334 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3335 struct snd_soc_card *card = dapm->card;
3336 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3337 unsigned int reg_val, val;
3339 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3340 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3341 int ret = soc_dapm_read(dapm, e->reg, ®_val);
3343 mutex_unlock(&card->dapm_mutex);
3347 reg_val = dapm_kcontrol_get_value(kcontrol);
3349 mutex_unlock(&card->dapm_mutex);
3351 val = (reg_val >> e->shift_l) & e->mask;
3352 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3353 if (e->shift_l != e->shift_r) {
3354 val = (reg_val >> e->shift_r) & e->mask;
3355 val = snd_soc_enum_val_to_item(e, val);
3356 ucontrol->value.enumerated.item[1] = val;
3361 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3364 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3365 * @kcontrol: mixer control
3366 * @ucontrol: control element information
3368 * Callback to set the value of a dapm enumerated double mixer control.
3370 * Returns 0 for success.
3372 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3373 struct snd_ctl_elem_value *ucontrol)
3375 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3376 struct snd_soc_card *card = dapm->card;
3377 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3378 unsigned int *item = ucontrol->value.enumerated.item;
3379 unsigned int val, change, reg_change = 0;
3381 struct snd_soc_dapm_update update = {};
3384 if (item[0] >= e->items)
3387 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3388 mask = e->mask << e->shift_l;
3389 if (e->shift_l != e->shift_r) {
3390 if (item[1] > e->items)
3392 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
3393 mask |= e->mask << e->shift_r;
3396 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3398 change = dapm_kcontrol_set_value(kcontrol, val);
3400 if (e->reg != SND_SOC_NOPM)
3401 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3403 if (change || reg_change) {
3405 update.kcontrol = kcontrol;
3406 update.reg = e->reg;
3409 card->update = &update;
3411 change |= reg_change;
3413 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3415 card->update = NULL;
3418 mutex_unlock(&card->dapm_mutex);
3421 soc_dpcm_runtime_update(card);
3425 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3428 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3430 * @kcontrol: mixer control
3431 * @uinfo: control element information
3433 * Callback to provide information about a pin switch control.
3435 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3436 struct snd_ctl_elem_info *uinfo)
3438 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3440 uinfo->value.integer.min = 0;
3441 uinfo->value.integer.max = 1;
3445 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3448 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3450 * @kcontrol: mixer control
3453 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3454 struct snd_ctl_elem_value *ucontrol)
3456 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3457 const char *pin = (const char *)kcontrol->private_value;
3459 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3461 ucontrol->value.integer.value[0] =
3462 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3464 mutex_unlock(&card->dapm_mutex);
3468 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3471 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3473 * @kcontrol: mixer control
3476 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3477 struct snd_ctl_elem_value *ucontrol)
3479 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3480 const char *pin = (const char *)kcontrol->private_value;
3483 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3484 ret = __snd_soc_dapm_set_pin(&card->dapm, pin,
3485 !!ucontrol->value.integer.value[0]);
3486 mutex_unlock(&card->dapm_mutex);
3488 snd_soc_dapm_sync(&card->dapm);
3491 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3493 struct snd_soc_dapm_widget *
3494 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3495 const struct snd_soc_dapm_widget *widget)
3497 struct snd_soc_dapm_widget *w;
3499 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3500 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3501 /* Do not nag about probe deferrals */
3503 int ret = PTR_ERR(w);
3505 if (ret != -EPROBE_DEFER)
3507 "ASoC: Failed to create DAPM control %s (%d)\n",
3513 "ASoC: Failed to create DAPM control %s\n",
3517 mutex_unlock(&dapm->card->dapm_mutex);
3520 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
3522 struct snd_soc_dapm_widget *
3523 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3524 const struct snd_soc_dapm_widget *widget)
3526 enum snd_soc_dapm_direction dir;
3527 struct snd_soc_dapm_widget *w;
3531 if ((w = dapm_cnew_widget(widget)) == NULL)
3535 case snd_soc_dapm_regulator_supply:
3536 w->regulator = devm_regulator_get(dapm->dev, w->name);
3537 if (IS_ERR(w->regulator)) {
3538 ret = PTR_ERR(w->regulator);
3539 if (ret == -EPROBE_DEFER)
3540 return ERR_PTR(ret);
3541 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3546 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3547 ret = regulator_allow_bypass(w->regulator, true);
3549 dev_warn(w->dapm->dev,
3550 "ASoC: Failed to bypass %s: %d\n",
3554 case snd_soc_dapm_pinctrl:
3555 w->pinctrl = devm_pinctrl_get(dapm->dev);
3556 if (IS_ERR(w->pinctrl)) {
3557 ret = PTR_ERR(w->pinctrl);
3558 if (ret == -EPROBE_DEFER)
3559 return ERR_PTR(ret);
3560 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3565 case snd_soc_dapm_clock_supply:
3566 #ifdef CONFIG_CLKDEV_LOOKUP
3567 w->clk = devm_clk_get(dapm->dev, w->name);
3568 if (IS_ERR(w->clk)) {
3569 ret = PTR_ERR(w->clk);
3570 if (ret == -EPROBE_DEFER)
3571 return ERR_PTR(ret);
3572 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3584 prefix = soc_dapm_prefix(dapm);
3586 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3588 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3589 if (w->name == NULL) {
3595 case snd_soc_dapm_mic:
3596 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3597 w->power_check = dapm_generic_check_power;
3599 case snd_soc_dapm_input:
3600 if (!dapm->card->fully_routed)
3601 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3602 w->power_check = dapm_generic_check_power;
3604 case snd_soc_dapm_spk:
3605 case snd_soc_dapm_hp:
3606 w->is_ep = SND_SOC_DAPM_EP_SINK;
3607 w->power_check = dapm_generic_check_power;
3609 case snd_soc_dapm_output:
3610 if (!dapm->card->fully_routed)
3611 w->is_ep = SND_SOC_DAPM_EP_SINK;
3612 w->power_check = dapm_generic_check_power;
3614 case snd_soc_dapm_vmid:
3615 case snd_soc_dapm_siggen:
3616 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3617 w->power_check = dapm_always_on_check_power;
3619 case snd_soc_dapm_sink:
3620 w->is_ep = SND_SOC_DAPM_EP_SINK;
3621 w->power_check = dapm_always_on_check_power;
3624 case snd_soc_dapm_mux:
3625 case snd_soc_dapm_demux:
3626 case snd_soc_dapm_switch:
3627 case snd_soc_dapm_mixer:
3628 case snd_soc_dapm_mixer_named_ctl:
3629 case snd_soc_dapm_adc:
3630 case snd_soc_dapm_aif_out:
3631 case snd_soc_dapm_dac:
3632 case snd_soc_dapm_aif_in:
3633 case snd_soc_dapm_pga:
3634 case snd_soc_dapm_out_drv:
3635 case snd_soc_dapm_micbias:
3636 case snd_soc_dapm_line:
3637 case snd_soc_dapm_dai_link:
3638 case snd_soc_dapm_dai_out:
3639 case snd_soc_dapm_dai_in:
3640 w->power_check = dapm_generic_check_power;
3642 case snd_soc_dapm_supply:
3643 case snd_soc_dapm_regulator_supply:
3644 case snd_soc_dapm_pinctrl:
3645 case snd_soc_dapm_clock_supply:
3646 case snd_soc_dapm_kcontrol:
3648 w->power_check = dapm_supply_check_power;
3651 w->power_check = dapm_always_on_check_power;
3656 INIT_LIST_HEAD(&w->list);
3657 INIT_LIST_HEAD(&w->dirty);
3658 list_add_tail(&w->list, &dapm->card->widgets);
3660 snd_soc_dapm_for_each_direction(dir) {
3661 INIT_LIST_HEAD(&w->edges[dir]);
3662 w->endpoints[dir] = -1;
3665 /* machine layer sets up unconnected pins and insertions */
3671 * snd_soc_dapm_new_controls - create new dapm controls
3672 * @dapm: DAPM context
3673 * @widget: widget array
3674 * @num: number of widgets
3676 * Creates new DAPM controls based upon the templates.
3678 * Returns 0 for success else error.
3680 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3681 const struct snd_soc_dapm_widget *widget,
3684 struct snd_soc_dapm_widget *w;
3688 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3689 for (i = 0; i < num; i++) {
3690 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3693 /* Do not nag about probe deferrals */
3694 if (ret == -EPROBE_DEFER)
3697 "ASoC: Failed to create DAPM control %s (%d)\n",
3703 "ASoC: Failed to create DAPM control %s\n",
3710 mutex_unlock(&dapm->card->dapm_mutex);
3713 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3715 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3716 struct snd_kcontrol *kcontrol, int event)
3718 struct snd_soc_dapm_path *source_p, *sink_p;
3719 struct snd_soc_dai *source, *sink;
3720 struct snd_soc_pcm_runtime *rtd = w->priv;
3721 const struct snd_soc_pcm_stream *config = w->params + w->params_select;
3722 struct snd_pcm_substream substream;
3723 struct snd_pcm_hw_params *params = NULL;
3724 struct snd_pcm_runtime *runtime = NULL;
3728 if (WARN_ON(!config) ||
3729 WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3730 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3733 /* We only support a single source and sink, pick the first */
3734 source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT],
3735 struct snd_soc_dapm_path,
3736 list_node[SND_SOC_DAPM_DIR_OUT]);
3737 sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN],
3738 struct snd_soc_dapm_path,
3739 list_node[SND_SOC_DAPM_DIR_IN]);
3741 source = source_p->source->priv;
3742 sink = sink_p->sink->priv;
3744 /* Be a little careful as we don't want to overflow the mask array */
3745 if (config->formats) {
3746 fmt = ffs(config->formats) - 1;
3748 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3753 /* Currently very limited parameter selection */
3754 params = kzalloc(sizeof(*params), GFP_KERNEL);
3759 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3761 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3763 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3766 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3767 = config->channels_min;
3768 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3769 = config->channels_max;
3771 memset(&substream, 0, sizeof(substream));
3773 /* Allocate a dummy snd_pcm_runtime for startup() and other ops() */
3774 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
3779 substream.runtime = runtime;
3780 substream.private_data = rtd;
3783 case SND_SOC_DAPM_PRE_PMU:
3784 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3785 if (source->driver->ops->startup) {
3786 ret = source->driver->ops->startup(&substream, source);
3788 dev_err(source->dev,
3789 "ASoC: startup() failed: %d\n", ret);
3794 ret = soc_dai_hw_params(&substream, params, source);
3798 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3799 if (sink->driver->ops->startup) {
3800 ret = sink->driver->ops->startup(&substream, sink);
3803 "ASoC: startup() failed: %d\n", ret);
3808 ret = soc_dai_hw_params(&substream, params, sink);
3813 case SND_SOC_DAPM_POST_PMU:
3814 ret = snd_soc_dai_digital_mute(sink, 0,
3815 SNDRV_PCM_STREAM_PLAYBACK);
3816 if (ret != 0 && ret != -ENOTSUPP)
3817 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3821 case SND_SOC_DAPM_PRE_PMD:
3822 ret = snd_soc_dai_digital_mute(sink, 1,
3823 SNDRV_PCM_STREAM_PLAYBACK);
3824 if (ret != 0 && ret != -ENOTSUPP)
3825 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3829 if (source->driver->ops->shutdown) {
3830 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3831 source->driver->ops->shutdown(&substream, source);
3835 if (sink->driver->ops->shutdown) {
3836 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3837 sink->driver->ops->shutdown(&substream, sink);
3842 WARN(1, "Unknown event %d\n", event);
3852 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
3853 struct snd_ctl_elem_value *ucontrol)
3855 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3857 ucontrol->value.enumerated.item[0] = w->params_select;
3862 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
3863 struct snd_ctl_elem_value *ucontrol)
3865 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3867 /* Can't change the config when widget is already powered */
3871 if (ucontrol->value.enumerated.item[0] == w->params_select)
3874 if (ucontrol->value.enumerated.item[0] >= w->num_params)
3877 w->params_select = ucontrol->value.enumerated.item[0];
3883 snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
3884 unsigned long *private_value,
3886 const char **w_param_text)
3890 devm_kfree(card->dev, (void *)*private_value);
3895 for (count = 0 ; count < num_params; count++)
3896 devm_kfree(card->dev, (void *)w_param_text[count]);
3897 devm_kfree(card->dev, w_param_text);
3900 static struct snd_kcontrol_new *
3901 snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
3903 const struct snd_soc_pcm_stream *params,
3904 int num_params, const char **w_param_text,
3905 unsigned long *private_value)
3907 struct soc_enum w_param_enum[] = {
3908 SOC_ENUM_SINGLE(0, 0, 0, NULL),
3910 struct snd_kcontrol_new kcontrol_dai_link[] = {
3911 SOC_ENUM_EXT(NULL, w_param_enum[0],
3912 snd_soc_dapm_dai_link_get,
3913 snd_soc_dapm_dai_link_put),
3915 struct snd_kcontrol_new *kcontrol_news;
3916 const struct snd_soc_pcm_stream *config = params;
3919 for (count = 0 ; count < num_params; count++) {
3920 if (!config->stream_name) {
3921 dev_warn(card->dapm.dev,
3922 "ASoC: anonymous config %d for dai link %s\n",
3924 w_param_text[count] =
3925 devm_kasprintf(card->dev, GFP_KERNEL,
3926 "Anonymous Configuration %d",
3929 w_param_text[count] = devm_kmemdup(card->dev,
3930 config->stream_name,
3931 strlen(config->stream_name) + 1,
3934 if (!w_param_text[count])
3935 goto outfree_w_param;
3939 w_param_enum[0].items = num_params;
3940 w_param_enum[0].texts = w_param_text;
3943 (unsigned long) devm_kmemdup(card->dev,
3944 (void *)(kcontrol_dai_link[0].private_value),
3945 sizeof(struct soc_enum), GFP_KERNEL);
3946 if (!*private_value) {
3947 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3949 goto outfree_w_param;
3951 kcontrol_dai_link[0].private_value = *private_value;
3952 /* duplicate kcontrol_dai_link on heap so that memory persists */
3953 kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
3954 sizeof(struct snd_kcontrol_new),
3956 if (!kcontrol_news) {
3957 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3959 goto outfree_w_param;
3961 return kcontrol_news;
3964 snd_soc_dapm_free_kcontrol(card, private_value, num_params, w_param_text);
3968 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3969 struct snd_soc_pcm_runtime *rtd,
3970 const struct snd_soc_pcm_stream *params,
3971 unsigned int num_params,
3972 struct snd_soc_dapm_widget *source,
3973 struct snd_soc_dapm_widget *sink)
3975 struct snd_soc_dapm_widget template;
3976 struct snd_soc_dapm_widget *w;
3977 const char **w_param_text;
3978 unsigned long private_value;
3982 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
3983 source->name, sink->name);
3987 memset(&template, 0, sizeof(template));
3988 template.reg = SND_SOC_NOPM;
3989 template.id = snd_soc_dapm_dai_link;
3990 template.name = link_name;
3991 template.event = snd_soc_dai_link_event;
3992 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3993 SND_SOC_DAPM_PRE_PMD;
3994 template.kcontrol_news = NULL;
3996 /* allocate memory for control, only in case of multiple configs */
3997 if (num_params > 1) {
3998 w_param_text = devm_kcalloc(card->dev, num_params,
3999 sizeof(char *), GFP_KERNEL);
4000 if (!w_param_text) {
4005 template.num_kcontrols = 1;
4006 template.kcontrol_news =
4007 snd_soc_dapm_alloc_kcontrol(card,
4008 link_name, params, num_params,
4009 w_param_text, &private_value);
4010 if (!template.kcontrol_news) {
4015 w_param_text = NULL;
4017 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
4019 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
4022 /* Do not nag about probe deferrals */
4023 if (ret != -EPROBE_DEFER)
4025 "ASoC: Failed to create %s widget (%d)\n",
4027 goto outfree_kcontrol_news;
4030 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
4033 goto outfree_kcontrol_news;
4037 w->num_params = num_params;
4040 ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL);
4043 return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL);
4046 devm_kfree(card->dev, w);
4047 outfree_kcontrol_news:
4048 devm_kfree(card->dev, (void *)template.kcontrol_news);
4049 snd_soc_dapm_free_kcontrol(card, &private_value, num_params, w_param_text);
4051 devm_kfree(card->dev, link_name);
4055 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
4056 struct snd_soc_dai *dai)
4058 struct snd_soc_dapm_widget template;
4059 struct snd_soc_dapm_widget *w;
4061 WARN_ON(dapm->dev != dai->dev);
4063 memset(&template, 0, sizeof(template));
4064 template.reg = SND_SOC_NOPM;
4066 if (dai->driver->playback.stream_name) {
4067 template.id = snd_soc_dapm_dai_in;
4068 template.name = dai->driver->playback.stream_name;
4069 template.sname = dai->driver->playback.stream_name;
4071 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4074 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4076 int ret = PTR_ERR(w);
4078 /* Do not nag about probe deferrals */
4079 if (ret != -EPROBE_DEFER)
4081 "ASoC: Failed to create %s widget (%d)\n",
4082 dai->driver->playback.stream_name, ret);
4086 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
4087 dai->driver->playback.stream_name);
4092 dai->playback_widget = w;
4095 if (dai->driver->capture.stream_name) {
4096 template.id = snd_soc_dapm_dai_out;
4097 template.name = dai->driver->capture.stream_name;
4098 template.sname = dai->driver->capture.stream_name;
4100 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4103 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4105 int ret = PTR_ERR(w);
4107 /* Do not nag about probe deferrals */
4108 if (ret != -EPROBE_DEFER)
4110 "ASoC: Failed to create %s widget (%d)\n",
4111 dai->driver->playback.stream_name, ret);
4115 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
4116 dai->driver->capture.stream_name);
4121 dai->capture_widget = w;
4127 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
4129 struct snd_soc_dapm_widget *dai_w, *w;
4130 struct snd_soc_dapm_widget *src, *sink;
4131 struct snd_soc_dai *dai;
4133 /* For each DAI widget... */
4134 list_for_each_entry(dai_w, &card->widgets, list) {
4135 switch (dai_w->id) {
4136 case snd_soc_dapm_dai_in:
4137 case snd_soc_dapm_dai_out:
4143 /* let users know there is no DAI to link */
4145 dev_dbg(card->dev, "dai widget %s has no DAI\n",
4152 /* ...find all widgets with the same stream and link them */
4153 list_for_each_entry(w, &card->widgets, list) {
4154 if (w->dapm != dai_w->dapm)
4158 case snd_soc_dapm_dai_in:
4159 case snd_soc_dapm_dai_out:
4165 if (!w->sname || !strstr(w->sname, dai_w->sname))
4168 if (dai_w->id == snd_soc_dapm_dai_in) {
4175 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
4176 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
4183 static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
4184 struct snd_soc_pcm_runtime *rtd)
4186 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
4187 struct snd_soc_dapm_widget *sink, *source;
4190 for (i = 0; i < rtd->num_codecs; i++) {
4191 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
4193 /* connect BE DAI playback if widgets are valid */
4194 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
4195 source = cpu_dai->playback_widget;
4196 sink = codec_dai->playback_widget;
4197 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
4198 cpu_dai->component->name, source->name,
4199 codec_dai->component->name, sink->name);
4201 snd_soc_dapm_add_path(&card->dapm, source, sink,
4205 /* connect BE DAI capture if widgets are valid */
4206 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
4207 source = codec_dai->capture_widget;
4208 sink = cpu_dai->capture_widget;
4209 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
4210 codec_dai->component->name, source->name,
4211 cpu_dai->component->name, sink->name);
4213 snd_soc_dapm_add_path(&card->dapm, source, sink,
4219 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
4222 struct snd_soc_dapm_widget *w;
4225 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
4226 w = dai->playback_widget;
4228 w = dai->capture_widget;
4231 dapm_mark_dirty(w, "stream event");
4233 if (w->id == snd_soc_dapm_dai_in) {
4234 ep = SND_SOC_DAPM_EP_SOURCE;
4235 dapm_widget_invalidate_input_paths(w);
4237 ep = SND_SOC_DAPM_EP_SINK;
4238 dapm_widget_invalidate_output_paths(w);
4242 case SND_SOC_DAPM_STREAM_START:
4246 case SND_SOC_DAPM_STREAM_STOP:
4250 case SND_SOC_DAPM_STREAM_SUSPEND:
4251 case SND_SOC_DAPM_STREAM_RESUME:
4252 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
4253 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
4259 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
4261 struct snd_soc_pcm_runtime *rtd;
4263 /* for each BE DAI link... */
4264 list_for_each_entry(rtd, &card->rtd_list, list) {
4266 * dynamic FE links have no fixed DAI mapping.
4267 * CODEC<->CODEC links have no direct connection.
4269 if (rtd->dai_link->dynamic || rtd->dai_link->params)
4272 dapm_connect_dai_link_widgets(card, rtd);
4276 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4281 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
4282 for (i = 0; i < rtd->num_codecs; i++)
4283 soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event);
4285 dapm_power_widgets(rtd->card, event);
4289 * snd_soc_dapm_stream_event - send a stream event to the dapm core
4290 * @rtd: PCM runtime data
4291 * @stream: stream name
4292 * @event: stream event
4294 * Sends a stream event to the dapm core. The core then makes any
4295 * necessary widget power changes.
4297 * Returns 0 for success else error.
4299 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4302 struct snd_soc_card *card = rtd->card;
4304 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4305 soc_dapm_stream_event(rtd, stream, event);
4306 mutex_unlock(&card->dapm_mutex);
4310 * snd_soc_dapm_enable_pin_unlocked - enable pin.
4311 * @dapm: DAPM context
4314 * Enables input/output pin and its parents or children widgets iff there is
4315 * a valid audio route and active audio stream.
4317 * Requires external locking.
4319 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4320 * do any widget power switching.
4322 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4325 return snd_soc_dapm_set_pin(dapm, pin, 1);
4327 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
4330 * snd_soc_dapm_enable_pin - enable pin.
4331 * @dapm: DAPM context
4334 * Enables input/output pin and its parents or children widgets iff there is
4335 * a valid audio route and active audio stream.
4337 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4338 * do any widget power switching.
4340 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4344 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4346 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
4348 mutex_unlock(&dapm->card->dapm_mutex);
4352 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
4355 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
4356 * @dapm: DAPM context
4359 * Enables input/output pin regardless of any other state. This is
4360 * intended for use with microphone bias supplies used in microphone
4363 * Requires external locking.
4365 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4366 * do any widget power switching.
4368 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4371 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4374 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4378 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
4379 if (!w->connected) {
4381 * w->force does not affect the number of input or output paths,
4382 * so we only have to recheck if w->connected is changed
4384 dapm_widget_invalidate_input_paths(w);
4385 dapm_widget_invalidate_output_paths(w);
4389 dapm_mark_dirty(w, "force enable");
4393 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
4396 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4397 * @dapm: DAPM context
4400 * Enables input/output pin regardless of any other state. This is
4401 * intended for use with microphone bias supplies used in microphone
4404 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4405 * do any widget power switching.
4407 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4412 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4414 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4416 mutex_unlock(&dapm->card->dapm_mutex);
4420 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4423 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4424 * @dapm: DAPM context
4427 * Disables input/output pin and its parents or children widgets.
4429 * Requires external locking.
4431 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4432 * do any widget power switching.
4434 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4437 return snd_soc_dapm_set_pin(dapm, pin, 0);
4439 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4442 * snd_soc_dapm_disable_pin - disable pin.
4443 * @dapm: DAPM context
4446 * Disables input/output pin and its parents or children widgets.
4448 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4449 * do any widget power switching.
4451 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4456 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4458 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4460 mutex_unlock(&dapm->card->dapm_mutex);
4464 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4467 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4468 * @dapm: DAPM context
4471 * Marks the specified pin as being not connected, disabling it along
4472 * any parent or child widgets. At present this is identical to
4473 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4474 * additional things such as disabling controls which only affect
4475 * paths through the pin.
4477 * Requires external locking.
4479 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4480 * do any widget power switching.
4482 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4485 return snd_soc_dapm_set_pin(dapm, pin, 0);
4487 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4490 * snd_soc_dapm_nc_pin - permanently disable pin.
4491 * @dapm: DAPM context
4494 * Marks the specified pin as being not connected, disabling it along
4495 * any parent or child widgets. At present this is identical to
4496 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4497 * additional things such as disabling controls which only affect
4498 * paths through the pin.
4500 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4501 * do any widget power switching.
4503 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4507 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4509 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4511 mutex_unlock(&dapm->card->dapm_mutex);
4515 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4518 * snd_soc_dapm_get_pin_status - get audio pin status
4519 * @dapm: DAPM context
4520 * @pin: audio signal pin endpoint (or start point)
4522 * Get audio pin status - connected or disconnected.
4524 * Returns 1 for connected otherwise 0.
4526 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4529 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4532 return w->connected;
4536 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4539 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4540 * @dapm: DAPM context
4541 * @pin: audio signal pin endpoint (or start point)
4543 * Mark the given endpoint or pin as ignoring suspend. When the
4544 * system is disabled a path between two endpoints flagged as ignoring
4545 * suspend will not be disabled. The path must already be enabled via
4546 * normal means at suspend time, it will not be turned on if it was not
4549 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4552 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4555 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4559 w->ignore_suspend = 1;
4563 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4566 * snd_soc_dapm_free - free dapm resources
4567 * @dapm: DAPM context
4569 * Free all dapm widgets and resources.
4571 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4573 dapm_debugfs_cleanup(dapm);
4574 dapm_free_widgets(dapm);
4575 list_del(&dapm->list);
4577 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4579 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4581 struct snd_soc_card *card = dapm->card;
4582 struct snd_soc_dapm_widget *w;
4583 LIST_HEAD(down_list);
4586 mutex_lock(&card->dapm_mutex);
4588 list_for_each_entry(w, &dapm->card->widgets, list) {
4589 if (w->dapm != dapm)
4592 dapm_seq_insert(w, &down_list, false);
4598 /* If there were no widgets to power down we're already in
4602 if (dapm->bias_level == SND_SOC_BIAS_ON)
4603 snd_soc_dapm_set_bias_level(dapm,
4604 SND_SOC_BIAS_PREPARE);
4605 dapm_seq_run(card, &down_list, 0, false);
4606 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4607 snd_soc_dapm_set_bias_level(dapm,
4608 SND_SOC_BIAS_STANDBY);
4611 mutex_unlock(&card->dapm_mutex);
4615 * snd_soc_dapm_shutdown - callback for system shutdown
4617 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4619 struct snd_soc_dapm_context *dapm;
4621 list_for_each_entry(dapm, &card->dapm_list, list) {
4622 if (dapm != &card->dapm) {
4623 soc_dapm_shutdown_dapm(dapm);
4624 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4625 snd_soc_dapm_set_bias_level(dapm,
4630 soc_dapm_shutdown_dapm(&card->dapm);
4631 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4632 snd_soc_dapm_set_bias_level(&card->dapm,
4636 /* Module information */
4637 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4638 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4639 MODULE_LICENSE("GPL");