2 * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * o Changes power status of internal codec blocks depending on the
14 * dynamic configuration of codec internal audio paths and active
16 * o Platform power domain - can support external components i.e. amps and
17 * mic/meadphone insertion events.
18 * o Automatic Mic Bias support
19 * o Jack insertion power event initiation - e.g. hp insertion will enable
21 * o Delayed powerdown of audio susbsystem to reduce pops between a quick
25 * o DAPM power change sequencing - allow for configurable per
27 * o Support for analogue bias optimisation.
28 * o Support for reduced codec oversampling rates.
29 * o Support for reduced codec bias currents.
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/init.h>
35 #include <linux/async.h>
36 #include <linux/delay.h>
38 #include <linux/bitops.h>
39 #include <linux/platform_device.h>
40 #include <linux/jiffies.h>
41 #include <linux/debugfs.h>
42 #include <linux/slab.h>
43 #include <sound/core.h>
44 #include <sound/pcm.h>
45 #include <sound/pcm_params.h>
46 #include <sound/soc.h>
47 #include <sound/initval.h>
49 #include <trace/events/asoc.h>
51 /* dapm power sequences - make this per codec in the future */
52 static int dapm_up_seq
[] = {
53 [snd_soc_dapm_pre
] = 0,
54 [snd_soc_dapm_supply
] = 1,
55 [snd_soc_dapm_micbias
] = 2,
56 [snd_soc_dapm_aif_in
] = 3,
57 [snd_soc_dapm_aif_out
] = 3,
58 [snd_soc_dapm_mic
] = 4,
59 [snd_soc_dapm_mux
] = 5,
60 [snd_soc_dapm_virt_mux
] = 5,
61 [snd_soc_dapm_value_mux
] = 5,
62 [snd_soc_dapm_dac
] = 6,
63 [snd_soc_dapm_mixer
] = 7,
64 [snd_soc_dapm_mixer_named_ctl
] = 7,
65 [snd_soc_dapm_pga
] = 8,
66 [snd_soc_dapm_adc
] = 9,
67 [snd_soc_dapm_out_drv
] = 10,
68 [snd_soc_dapm_hp
] = 10,
69 [snd_soc_dapm_spk
] = 10,
70 [snd_soc_dapm_post
] = 11,
73 static int dapm_down_seq
[] = {
74 [snd_soc_dapm_pre
] = 0,
75 [snd_soc_dapm_adc
] = 1,
76 [snd_soc_dapm_hp
] = 2,
77 [snd_soc_dapm_spk
] = 2,
78 [snd_soc_dapm_out_drv
] = 2,
79 [snd_soc_dapm_pga
] = 4,
80 [snd_soc_dapm_mixer_named_ctl
] = 5,
81 [snd_soc_dapm_mixer
] = 5,
82 [snd_soc_dapm_dac
] = 6,
83 [snd_soc_dapm_mic
] = 7,
84 [snd_soc_dapm_micbias
] = 8,
85 [snd_soc_dapm_mux
] = 9,
86 [snd_soc_dapm_virt_mux
] = 9,
87 [snd_soc_dapm_value_mux
] = 9,
88 [snd_soc_dapm_aif_in
] = 10,
89 [snd_soc_dapm_aif_out
] = 10,
90 [snd_soc_dapm_supply
] = 11,
91 [snd_soc_dapm_post
] = 12,
94 static void pop_wait(u32 pop_time
)
97 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
100 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
108 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
113 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
114 dev_info(dev
, "%s", buf
);
120 /* create a new dapm widget */
121 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
122 const struct snd_soc_dapm_widget
*_widget
)
124 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
128 * snd_soc_dapm_set_bias_level - set the bias level for the system
129 * @dapm: DAPM context
130 * @level: level to configure
132 * Configure the bias (power) levels for the SoC audio device.
134 * Returns 0 for success else error.
136 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
137 enum snd_soc_bias_level level
)
139 struct snd_soc_card
*card
= dapm
->card
;
143 case SND_SOC_BIAS_ON
:
144 dev_dbg(dapm
->dev
, "Setting full bias\n");
146 case SND_SOC_BIAS_PREPARE
:
147 dev_dbg(dapm
->dev
, "Setting bias prepare\n");
149 case SND_SOC_BIAS_STANDBY
:
150 dev_dbg(dapm
->dev
, "Setting standby bias\n");
152 case SND_SOC_BIAS_OFF
:
153 dev_dbg(dapm
->dev
, "Setting bias off\n");
156 dev_err(dapm
->dev
, "Setting invalid bias %d\n", level
);
160 trace_snd_soc_bias_level_start(card
, level
);
162 if (card
&& card
->set_bias_level
)
163 ret
= card
->set_bias_level(card
, level
);
165 if (dapm
->codec
&& dapm
->codec
->driver
->set_bias_level
)
166 ret
= dapm
->codec
->driver
->set_bias_level(dapm
->codec
, level
);
168 dapm
->bias_level
= level
;
171 if (card
&& card
->set_bias_level_post
)
172 ret
= card
->set_bias_level_post(card
, level
);
175 trace_snd_soc_bias_level_done(card
, level
);
180 /* set up initial codec paths */
181 static void dapm_set_path_status(struct snd_soc_dapm_widget
*w
,
182 struct snd_soc_dapm_path
*p
, int i
)
185 case snd_soc_dapm_switch
:
186 case snd_soc_dapm_mixer
:
187 case snd_soc_dapm_mixer_named_ctl
: {
189 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
190 w
->kcontrol_news
[i
].private_value
;
191 unsigned int reg
= mc
->reg
;
192 unsigned int shift
= mc
->shift
;
194 unsigned int mask
= (1 << fls(max
)) - 1;
195 unsigned int invert
= mc
->invert
;
197 val
= snd_soc_read(w
->codec
, reg
);
198 val
= (val
>> shift
) & mask
;
200 if ((invert
&& !val
) || (!invert
&& val
))
206 case snd_soc_dapm_mux
: {
207 struct soc_enum
*e
= (struct soc_enum
*)
208 w
->kcontrol_news
[i
].private_value
;
209 int val
, item
, bitmask
;
211 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
213 val
= snd_soc_read(w
->codec
, e
->reg
);
214 item
= (val
>> e
->shift_l
) & (bitmask
- 1);
217 for (i
= 0; i
< e
->max
; i
++) {
218 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
223 case snd_soc_dapm_virt_mux
: {
224 struct soc_enum
*e
= (struct soc_enum
*)
225 w
->kcontrol_news
[i
].private_value
;
228 /* since a virtual mux has no backing registers to
229 * decide which path to connect, it will try to match
230 * with the first enumeration. This is to ensure
231 * that the default mux choice (the first) will be
232 * correctly powered up during initialization.
234 if (!strcmp(p
->name
, e
->texts
[0]))
238 case snd_soc_dapm_value_mux
: {
239 struct soc_enum
*e
= (struct soc_enum
*)
240 w
->kcontrol_news
[i
].private_value
;
243 val
= snd_soc_read(w
->codec
, e
->reg
);
244 val
= (val
>> e
->shift_l
) & e
->mask
;
245 for (item
= 0; item
< e
->max
; item
++) {
246 if (val
== e
->values
[item
])
251 for (i
= 0; i
< e
->max
; i
++) {
252 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
257 /* does not effect routing - always connected */
258 case snd_soc_dapm_pga
:
259 case snd_soc_dapm_out_drv
:
260 case snd_soc_dapm_output
:
261 case snd_soc_dapm_adc
:
262 case snd_soc_dapm_input
:
263 case snd_soc_dapm_dac
:
264 case snd_soc_dapm_micbias
:
265 case snd_soc_dapm_vmid
:
266 case snd_soc_dapm_supply
:
267 case snd_soc_dapm_aif_in
:
268 case snd_soc_dapm_aif_out
:
271 /* does effect routing - dynamically connected */
272 case snd_soc_dapm_hp
:
273 case snd_soc_dapm_mic
:
274 case snd_soc_dapm_spk
:
275 case snd_soc_dapm_line
:
276 case snd_soc_dapm_pre
:
277 case snd_soc_dapm_post
:
283 /* connect mux widget to its interconnecting audio paths */
284 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
285 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
286 struct snd_soc_dapm_path
*path
, const char *control_name
,
287 const struct snd_kcontrol_new
*kcontrol
)
289 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
292 for (i
= 0; i
< e
->max
; i
++) {
293 if (!(strcmp(control_name
, e
->texts
[i
]))) {
294 list_add(&path
->list
, &dapm
->card
->paths
);
295 list_add(&path
->list_sink
, &dest
->sources
);
296 list_add(&path
->list_source
, &src
->sinks
);
297 path
->name
= (char*)e
->texts
[i
];
298 dapm_set_path_status(dest
, path
, 0);
306 /* connect mixer widget to its interconnecting audio paths */
307 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
308 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
309 struct snd_soc_dapm_path
*path
, const char *control_name
)
313 /* search for mixer kcontrol */
314 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
315 if (!strcmp(control_name
, dest
->kcontrol_news
[i
].name
)) {
316 list_add(&path
->list
, &dapm
->card
->paths
);
317 list_add(&path
->list_sink
, &dest
->sources
);
318 list_add(&path
->list_source
, &src
->sinks
);
319 path
->name
= dest
->kcontrol_news
[i
].name
;
320 dapm_set_path_status(dest
, path
, i
);
327 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
328 struct snd_soc_dapm_widget
*kcontrolw
,
329 const struct snd_kcontrol_new
*kcontrol_new
,
330 struct snd_kcontrol
**kcontrol
)
332 struct snd_soc_dapm_widget
*w
;
337 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
338 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
340 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
341 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
343 *kcontrol
= w
->kcontrols
[i
];
352 /* create new dapm mixer control */
353 static int dapm_new_mixer(struct snd_soc_dapm_context
*dapm
,
354 struct snd_soc_dapm_widget
*w
)
357 size_t name_len
, prefix_len
;
358 struct snd_soc_dapm_path
*path
;
359 struct snd_card
*card
= dapm
->card
->snd_card
;
361 struct snd_soc_dapm_widget_list
*wlist
;
365 prefix
= dapm
->codec
->name_prefix
;
370 prefix_len
= strlen(prefix
) + 1;
375 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
378 list_for_each_entry(path
, &w
->sources
, list_sink
) {
380 /* mixer/mux paths name must match control name */
381 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
384 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
385 sizeof(struct snd_soc_dapm_widget
*),
386 wlist
= kzalloc(wlistsize
, GFP_KERNEL
);
389 "asoc: can't allocate widget list for %s\n",
393 wlist
->num_widgets
= 1;
394 wlist
->widgets
[0] = w
;
396 /* add dapm control with long name.
397 * for dapm_mixer this is the concatenation of the
398 * mixer and kcontrol name.
399 * for dapm_mixer_named_ctl this is simply the
402 name_len
= strlen(w
->kcontrol_news
[i
].name
) + 1;
403 if (w
->id
!= snd_soc_dapm_mixer_named_ctl
)
404 name_len
+= 1 + strlen(w
->name
);
406 path
->long_name
= kmalloc(name_len
, GFP_KERNEL
);
408 if (path
->long_name
== NULL
) {
415 /* The control will get a prefix from
416 * the control creation process but
417 * we're also using the same prefix
418 * for widgets so cut the prefix off
419 * the front of the widget name.
421 snprintf(path
->long_name
, name_len
, "%s %s",
422 w
->name
+ prefix_len
,
423 w
->kcontrol_news
[i
].name
);
425 case snd_soc_dapm_mixer_named_ctl
:
426 snprintf(path
->long_name
, name_len
, "%s",
427 w
->kcontrol_news
[i
].name
);
431 path
->long_name
[name_len
- 1] = '\0';
433 path
->kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
],
434 wlist
, path
->long_name
,
436 ret
= snd_ctl_add(card
, path
->kcontrol
);
439 "asoc: failed to add dapm kcontrol %s: %d\n",
440 path
->long_name
, ret
);
442 kfree(path
->long_name
);
443 path
->long_name
= NULL
;
446 w
->kcontrols
[i
] = path
->kcontrol
;
452 /* create new dapm mux control */
453 static int dapm_new_mux(struct snd_soc_dapm_context
*dapm
,
454 struct snd_soc_dapm_widget
*w
)
456 struct snd_soc_dapm_path
*path
= NULL
;
457 struct snd_kcontrol
*kcontrol
;
458 struct snd_card
*card
= dapm
->card
->snd_card
;
462 struct snd_soc_dapm_widget_list
*wlist
;
463 int shared
, wlistentries
;
467 if (w
->num_kcontrols
!= 1) {
469 "asoc: mux %s has incorrect number of controls\n",
474 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[0],
477 wlist
= kcontrol
->private_data
;
478 wlistentries
= wlist
->num_widgets
+ 1;
483 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
484 wlistentries
* sizeof(struct snd_soc_dapm_widget
*),
485 wlist
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
488 "asoc: can't allocate widget list for %s\n", w
->name
);
491 wlist
->num_widgets
= wlistentries
;
492 wlist
->widgets
[wlistentries
- 1] = w
;
496 prefix
= dapm
->codec
->name_prefix
;
501 name
= w
->kcontrol_news
[0].name
;
506 prefix_len
= strlen(prefix
) + 1;
512 * The control will get a prefix from the control creation
513 * process but we're also using the same prefix for widgets so
514 * cut the prefix off the front of the widget name.
516 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[0], wlist
,
517 name
+ prefix_len
, prefix
);
518 ret
= snd_ctl_add(card
, kcontrol
);
521 "asoc: failed to add kcontrol %s\n", w
->name
);
527 kcontrol
->private_data
= wlist
;
529 w
->kcontrols
[0] = kcontrol
;
531 list_for_each_entry(path
, &w
->sources
, list_sink
)
532 path
->kcontrol
= kcontrol
;
537 /* create new dapm volume control */
538 static int dapm_new_pga(struct snd_soc_dapm_context
*dapm
,
539 struct snd_soc_dapm_widget
*w
)
541 if (w
->num_kcontrols
)
542 dev_err(w
->dapm
->dev
,
543 "asoc: PGA controls not supported: '%s'\n", w
->name
);
548 /* reset 'walked' bit for each dapm path */
549 static inline void dapm_clear_walk(struct snd_soc_dapm_context
*dapm
)
551 struct snd_soc_dapm_path
*p
;
553 list_for_each_entry(p
, &dapm
->card
->paths
, list
)
557 /* We implement power down on suspend by checking the power state of
558 * the ALSA card - when we are suspending the ALSA state for the card
561 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
563 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
566 case SNDRV_CTL_POWER_D3hot
:
567 case SNDRV_CTL_POWER_D3cold
:
568 if (widget
->ignore_suspend
)
569 dev_dbg(widget
->dapm
->dev
, "%s ignoring suspend\n",
571 return widget
->ignore_suspend
;
578 * Recursively check for a completed path to an active or physically connected
579 * output widget. Returns number of complete paths.
581 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
)
583 struct snd_soc_dapm_path
*path
;
586 if (widget
->id
== snd_soc_dapm_supply
)
589 switch (widget
->id
) {
590 case snd_soc_dapm_adc
:
591 case snd_soc_dapm_aif_out
:
593 return snd_soc_dapm_suspend_check(widget
);
598 if (widget
->connected
) {
599 /* connected pin ? */
600 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
)
601 return snd_soc_dapm_suspend_check(widget
);
603 /* connected jack or spk ? */
604 if (widget
->id
== snd_soc_dapm_hp
|| widget
->id
== snd_soc_dapm_spk
||
605 (widget
->id
== snd_soc_dapm_line
&& !list_empty(&widget
->sources
)))
606 return snd_soc_dapm_suspend_check(widget
);
609 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
613 if (path
->sink
&& path
->connect
) {
615 con
+= is_connected_output_ep(path
->sink
);
623 * Recursively check for a completed path to an active or physically connected
624 * input widget. Returns number of complete paths.
626 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
)
628 struct snd_soc_dapm_path
*path
;
631 if (widget
->id
== snd_soc_dapm_supply
)
634 /* active stream ? */
635 switch (widget
->id
) {
636 case snd_soc_dapm_dac
:
637 case snd_soc_dapm_aif_in
:
639 return snd_soc_dapm_suspend_check(widget
);
644 if (widget
->connected
) {
645 /* connected pin ? */
646 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
)
647 return snd_soc_dapm_suspend_check(widget
);
649 /* connected VMID/Bias for lower pops */
650 if (widget
->id
== snd_soc_dapm_vmid
)
651 return snd_soc_dapm_suspend_check(widget
);
653 /* connected jack ? */
654 if (widget
->id
== snd_soc_dapm_mic
||
655 (widget
->id
== snd_soc_dapm_line
&& !list_empty(&widget
->sinks
)))
656 return snd_soc_dapm_suspend_check(widget
);
659 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
663 if (path
->source
&& path
->connect
) {
665 con
+= is_connected_input_ep(path
->source
);
673 * Handler for generic register modifier widget.
675 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
676 struct snd_kcontrol
*kcontrol
, int event
)
680 if (SND_SOC_DAPM_EVENT_ON(event
))
685 snd_soc_update_bits(w
->codec
, -(w
->reg
+ 1),
686 w
->mask
<< w
->shift
, val
<< w
->shift
);
690 EXPORT_SYMBOL_GPL(dapm_reg_event
);
692 /* Generic check to see if a widget should be powered.
694 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
698 in
= is_connected_input_ep(w
);
699 dapm_clear_walk(w
->dapm
);
700 out
= is_connected_output_ep(w
);
701 dapm_clear_walk(w
->dapm
);
702 return out
!= 0 && in
!= 0;
705 /* Check to see if an ADC has power */
706 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
711 in
= is_connected_input_ep(w
);
712 dapm_clear_walk(w
->dapm
);
715 return dapm_generic_check_power(w
);
719 /* Check to see if a DAC has power */
720 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
725 out
= is_connected_output_ep(w
);
726 dapm_clear_walk(w
->dapm
);
729 return dapm_generic_check_power(w
);
733 /* Check to see if a power supply is needed */
734 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
736 struct snd_soc_dapm_path
*path
;
739 /* Check if one of our outputs is connected */
740 list_for_each_entry(path
, &w
->sinks
, list_source
) {
741 if (path
->connected
&&
742 !path
->connected(path
->source
, path
->sink
))
748 if (path
->sink
->force
) {
753 if (path
->sink
->power_check
&&
754 path
->sink
->power_check(path
->sink
)) {
760 dapm_clear_walk(w
->dapm
);
765 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
766 struct snd_soc_dapm_widget
*b
,
774 sort
= dapm_down_seq
;
776 if (sort
[a
->id
] != sort
[b
->id
])
777 return sort
[a
->id
] - sort
[b
->id
];
778 if (a
->subseq
!= b
->subseq
) {
780 return a
->subseq
- b
->subseq
;
782 return b
->subseq
- a
->subseq
;
784 if (a
->reg
!= b
->reg
)
785 return a
->reg
- b
->reg
;
786 if (a
->dapm
!= b
->dapm
)
787 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
792 /* Insert a widget in order into a DAPM power sequence. */
793 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
794 struct list_head
*list
,
797 struct snd_soc_dapm_widget
*w
;
799 list_for_each_entry(w
, list
, power_list
)
800 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
801 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
805 list_add_tail(&new_widget
->power_list
, list
);
808 static void dapm_seq_check_event(struct snd_soc_dapm_context
*dapm
,
809 struct snd_soc_dapm_widget
*w
, int event
)
811 struct snd_soc_card
*card
= dapm
->card
;
816 case SND_SOC_DAPM_PRE_PMU
:
820 case SND_SOC_DAPM_POST_PMU
:
821 ev_name
= "POST_PMU";
824 case SND_SOC_DAPM_PRE_PMD
:
828 case SND_SOC_DAPM_POST_PMD
:
829 ev_name
= "POST_PMD";
837 if (w
->power
!= power
)
840 if (w
->event
&& (w
->event_flags
& event
)) {
841 pop_dbg(dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
843 trace_snd_soc_dapm_widget_event_start(w
, event
);
844 ret
= w
->event(w
, NULL
, event
);
845 trace_snd_soc_dapm_widget_event_done(w
, event
);
847 pr_err("%s: %s event failed: %d\n",
848 ev_name
, w
->name
, ret
);
852 /* Apply the coalesced changes from a DAPM sequence */
853 static void dapm_seq_run_coalesced(struct snd_soc_dapm_context
*dapm
,
854 struct list_head
*pending
)
856 struct snd_soc_card
*card
= dapm
->card
;
857 struct snd_soc_dapm_widget
*w
;
859 unsigned int value
= 0;
860 unsigned int mask
= 0;
861 unsigned int cur_mask
;
863 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
866 list_for_each_entry(w
, pending
, power_list
) {
867 cur_mask
= 1 << w
->shift
;
868 BUG_ON(reg
!= w
->reg
);
879 pop_dbg(dapm
->dev
, card
->pop_time
,
880 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
881 w
->name
, reg
, value
, mask
);
883 /* Check for events */
884 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMU
);
885 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMD
);
889 pop_dbg(dapm
->dev
, card
->pop_time
,
890 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
891 value
, mask
, reg
, card
->pop_time
);
892 pop_wait(card
->pop_time
);
893 snd_soc_update_bits(dapm
->codec
, reg
, mask
, value
);
896 list_for_each_entry(w
, pending
, power_list
) {
897 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMU
);
898 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMD
);
902 /* Apply a DAPM power sequence.
904 * We walk over a pre-sorted list of widgets to apply power to. In
905 * order to minimise the number of writes to the device required
906 * multiple widgets will be updated in a single write where possible.
907 * Currently anything that requires more than a single write is not
910 static void dapm_seq_run(struct snd_soc_dapm_context
*dapm
,
911 struct list_head
*list
, int event
, bool power_up
)
913 struct snd_soc_dapm_widget
*w
, *n
;
917 int cur_reg
= SND_SOC_NOPM
;
918 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
925 sort
= dapm_down_seq
;
927 list_for_each_entry_safe(w
, n
, list
, power_list
) {
930 /* Do we need to apply any queued changes? */
931 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
932 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
933 if (!list_empty(&pending
))
934 dapm_seq_run_coalesced(cur_dapm
, &pending
);
936 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
937 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
938 if (sort
[i
] == cur_sort
)
939 cur_dapm
->seq_notifier(cur_dapm
,
944 INIT_LIST_HEAD(&pending
);
947 cur_reg
= SND_SOC_NOPM
;
952 case snd_soc_dapm_pre
:
954 list_for_each_entry_safe_continue(w
, n
, list
,
957 if (event
== SND_SOC_DAPM_STREAM_START
)
959 NULL
, SND_SOC_DAPM_PRE_PMU
);
960 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
962 NULL
, SND_SOC_DAPM_PRE_PMD
);
965 case snd_soc_dapm_post
:
967 list_for_each_entry_safe_continue(w
, n
, list
,
970 if (event
== SND_SOC_DAPM_STREAM_START
)
972 NULL
, SND_SOC_DAPM_POST_PMU
);
973 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
975 NULL
, SND_SOC_DAPM_POST_PMD
);
979 /* Queue it up for application */
980 cur_sort
= sort
[w
->id
];
981 cur_subseq
= w
->subseq
;
984 list_move(&w
->power_list
, &pending
);
989 dev_err(w
->dapm
->dev
,
990 "Failed to apply widget power: %d\n", ret
);
993 if (!list_empty(&pending
))
994 dapm_seq_run_coalesced(cur_dapm
, &pending
);
996 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
997 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
998 if (sort
[i
] == cur_sort
)
999 cur_dapm
->seq_notifier(cur_dapm
,
1004 static void dapm_widget_update(struct snd_soc_dapm_context
*dapm
)
1006 struct snd_soc_dapm_update
*update
= dapm
->update
;
1007 struct snd_soc_dapm_widget
*w
;
1016 (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1017 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1019 pr_err("%s DAPM pre-event failed: %d\n",
1023 ret
= snd_soc_update_bits(w
->codec
, update
->reg
, update
->mask
,
1026 pr_err("%s DAPM update failed: %d\n", w
->name
, ret
);
1029 (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1030 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1032 pr_err("%s DAPM post-event failed: %d\n",
1037 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1038 * they're changing state.
1040 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1042 struct snd_soc_dapm_context
*d
= data
;
1045 if (d
->dev_power
&& d
->bias_level
== SND_SOC_BIAS_OFF
) {
1046 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1049 "Failed to turn on bias: %d\n", ret
);
1052 /* If we're changing to all on or all off then prepare */
1053 if ((d
->dev_power
&& d
->bias_level
== SND_SOC_BIAS_STANDBY
) ||
1054 (!d
->dev_power
&& d
->bias_level
== SND_SOC_BIAS_ON
)) {
1055 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1058 "Failed to prepare bias: %d\n", ret
);
1062 /* Async callback run prior to DAPM sequences - brings to their final
1065 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1067 struct snd_soc_dapm_context
*d
= data
;
1070 /* If we just powered the last thing off drop to standby bias */
1071 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&& !d
->dev_power
) {
1072 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1074 dev_err(d
->dev
, "Failed to apply standby bias: %d\n",
1078 /* If we're in standby and can support bias off then do that */
1079 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&& d
->idle_bias_off
) {
1080 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1082 dev_err(d
->dev
, "Failed to turn off bias: %d\n", ret
);
1085 /* If we just powered up then move to active bias */
1086 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&& d
->dev_power
) {
1087 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1089 dev_err(d
->dev
, "Failed to apply active bias: %d\n",
1095 * Scan each dapm widget for complete audio path.
1096 * A complete path is a route that has valid endpoints i.e.:-
1098 * o DAC to output pin.
1099 * o Input Pin to ADC.
1100 * o Input pin to Output pin (bypass, sidetone)
1101 * o DAC to ADC (loopback).
1103 static int dapm_power_widgets(struct snd_soc_dapm_context
*dapm
, int event
)
1105 struct snd_soc_card
*card
= dapm
->card
;
1106 struct snd_soc_dapm_widget
*w
;
1107 struct snd_soc_dapm_context
*d
;
1109 LIST_HEAD(down_list
);
1110 LIST_HEAD(async_domain
);
1113 trace_snd_soc_dapm_start(card
);
1115 list_for_each_entry(d
, &card
->dapm_list
, list
)
1116 if (d
->n_widgets
|| d
->codec
== NULL
)
1119 /* Check which widgets we need to power and store them in
1120 * lists indicating if they should be powered up or down.
1122 list_for_each_entry(w
, &card
->widgets
, list
) {
1124 case snd_soc_dapm_pre
:
1125 dapm_seq_insert(w
, &down_list
, false);
1127 case snd_soc_dapm_post
:
1128 dapm_seq_insert(w
, &up_list
, true);
1132 if (!w
->power_check
)
1136 power
= w
->power_check(w
);
1140 w
->dapm
->dev_power
= 1;
1142 if (w
->power
== power
)
1145 trace_snd_soc_dapm_widget_power(w
, power
);
1148 dapm_seq_insert(w
, &up_list
, true);
1150 dapm_seq_insert(w
, &down_list
, false);
1157 /* If there are no DAPM widgets then try to figure out power from the
1160 if (!dapm
->n_widgets
) {
1162 case SND_SOC_DAPM_STREAM_START
:
1163 case SND_SOC_DAPM_STREAM_RESUME
:
1164 dapm
->dev_power
= 1;
1166 case SND_SOC_DAPM_STREAM_STOP
:
1167 dapm
->dev_power
= !!dapm
->codec
->active
;
1169 case SND_SOC_DAPM_STREAM_SUSPEND
:
1170 dapm
->dev_power
= 0;
1172 case SND_SOC_DAPM_STREAM_NOP
:
1173 switch (dapm
->bias_level
) {
1174 case SND_SOC_BIAS_STANDBY
:
1175 case SND_SOC_BIAS_OFF
:
1176 dapm
->dev_power
= 0;
1179 dapm
->dev_power
= 1;
1188 /* Force all contexts in the card to the same bias state */
1190 list_for_each_entry(d
, &card
->dapm_list
, list
)
1193 list_for_each_entry(d
, &card
->dapm_list
, list
)
1194 d
->dev_power
= power
;
1197 /* Run all the bias changes in parallel */
1198 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1199 async_schedule_domain(dapm_pre_sequence_async
, d
,
1201 async_synchronize_full_domain(&async_domain
);
1203 /* Power down widgets first; try to avoid amplifying pops. */
1204 dapm_seq_run(dapm
, &down_list
, event
, false);
1206 dapm_widget_update(dapm
);
1209 dapm_seq_run(dapm
, &up_list
, event
, true);
1211 /* Run all the bias changes in parallel */
1212 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1213 async_schedule_domain(dapm_post_sequence_async
, d
,
1215 async_synchronize_full_domain(&async_domain
);
1217 pop_dbg(dapm
->dev
, card
->pop_time
,
1218 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1219 pop_wait(card
->pop_time
);
1221 trace_snd_soc_dapm_done(card
);
1226 #ifdef CONFIG_DEBUG_FS
1227 static int dapm_widget_power_open_file(struct inode
*inode
, struct file
*file
)
1229 file
->private_data
= inode
->i_private
;
1233 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1234 char __user
*user_buf
,
1235 size_t count
, loff_t
*ppos
)
1237 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1241 struct snd_soc_dapm_path
*p
= NULL
;
1243 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1247 in
= is_connected_input_ep(w
);
1248 dapm_clear_walk(w
->dapm
);
1249 out
= is_connected_output_ep(w
);
1250 dapm_clear_walk(w
->dapm
);
1252 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s in %d out %d",
1253 w
->name
, w
->power
? "On" : "Off", in
, out
);
1256 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1257 " - R%d(0x%x) bit %d",
1258 w
->reg
, w
->reg
, w
->shift
);
1260 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1263 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1265 w
->active
? "active" : "inactive");
1267 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1268 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1272 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1273 " in \"%s\" \"%s\"\n",
1274 p
->name
? p
->name
: "static",
1277 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1278 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1282 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1283 " out \"%s\" \"%s\"\n",
1284 p
->name
? p
->name
: "static",
1288 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1294 static const struct file_operations dapm_widget_power_fops
= {
1295 .open
= dapm_widget_power_open_file
,
1296 .read
= dapm_widget_power_read_file
,
1297 .llseek
= default_llseek
,
1300 static int dapm_bias_open_file(struct inode
*inode
, struct file
*file
)
1302 file
->private_data
= inode
->i_private
;
1306 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1307 size_t count
, loff_t
*ppos
)
1309 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1312 switch (dapm
->bias_level
) {
1313 case SND_SOC_BIAS_ON
:
1316 case SND_SOC_BIAS_PREPARE
:
1317 level
= "Prepare\n";
1319 case SND_SOC_BIAS_STANDBY
:
1320 level
= "Standby\n";
1322 case SND_SOC_BIAS_OFF
:
1327 level
= "Unknown\n";
1331 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1335 static const struct file_operations dapm_bias_fops
= {
1336 .open
= dapm_bias_open_file
,
1337 .read
= dapm_bias_read_file
,
1338 .llseek
= default_llseek
,
1341 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1342 struct dentry
*parent
)
1346 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
1348 if (!dapm
->debugfs_dapm
) {
1350 "Failed to create DAPM debugfs directory\n");
1354 d
= debugfs_create_file("bias_level", 0444,
1355 dapm
->debugfs_dapm
, dapm
,
1359 "ASoC: Failed to create bias level debugfs file\n");
1362 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1364 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1367 if (!dapm
->debugfs_dapm
|| !w
->name
)
1370 d
= debugfs_create_file(w
->name
, 0444,
1371 dapm
->debugfs_dapm
, w
,
1372 &dapm_widget_power_fops
);
1374 dev_warn(w
->dapm
->dev
,
1375 "ASoC: Failed to create %s debugfs file\n",
1379 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1381 debugfs_remove_recursive(dapm
->debugfs_dapm
);
1385 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1386 struct dentry
*parent
)
1390 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1394 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1400 /* test and update the power status of a mux widget */
1401 static int dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1402 struct snd_kcontrol
*kcontrol
, int change
,
1403 int mux
, struct soc_enum
*e
)
1405 struct snd_soc_dapm_path
*path
;
1408 if (widget
->id
!= snd_soc_dapm_mux
&&
1409 widget
->id
!= snd_soc_dapm_virt_mux
&&
1410 widget
->id
!= snd_soc_dapm_value_mux
)
1416 /* find dapm widget path assoc with kcontrol */
1417 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1418 if (path
->kcontrol
!= kcontrol
)
1421 if (!path
->name
|| !e
->texts
[mux
])
1425 /* we now need to match the string in the enum to the path */
1426 if (!(strcmp(path
->name
, e
->texts
[mux
])))
1427 path
->connect
= 1; /* new connection */
1429 path
->connect
= 0; /* old connection must be powered down */
1433 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1438 /* test and update the power status of a mixer or switch widget */
1439 static int dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1440 struct snd_kcontrol
*kcontrol
, int connect
)
1442 struct snd_soc_dapm_path
*path
;
1445 if (widget
->id
!= snd_soc_dapm_mixer
&&
1446 widget
->id
!= snd_soc_dapm_mixer_named_ctl
&&
1447 widget
->id
!= snd_soc_dapm_switch
)
1450 /* find dapm widget path assoc with kcontrol */
1451 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1452 if (path
->kcontrol
!= kcontrol
)
1455 /* found, now check type */
1457 path
->connect
= connect
;
1462 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1467 /* show dapm widget status in sys fs */
1468 static ssize_t
dapm_widget_show(struct device
*dev
,
1469 struct device_attribute
*attr
, char *buf
)
1471 struct snd_soc_pcm_runtime
*rtd
=
1472 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
1473 struct snd_soc_codec
*codec
=rtd
->codec
;
1474 struct snd_soc_dapm_widget
*w
;
1476 char *state
= "not set";
1478 list_for_each_entry(w
, &codec
->card
->widgets
, list
) {
1479 if (w
->dapm
!= &codec
->dapm
)
1482 /* only display widgets that burnm power */
1484 case snd_soc_dapm_hp
:
1485 case snd_soc_dapm_mic
:
1486 case snd_soc_dapm_spk
:
1487 case snd_soc_dapm_line
:
1488 case snd_soc_dapm_micbias
:
1489 case snd_soc_dapm_dac
:
1490 case snd_soc_dapm_adc
:
1491 case snd_soc_dapm_pga
:
1492 case snd_soc_dapm_out_drv
:
1493 case snd_soc_dapm_mixer
:
1494 case snd_soc_dapm_mixer_named_ctl
:
1495 case snd_soc_dapm_supply
:
1497 count
+= sprintf(buf
+ count
, "%s: %s\n",
1498 w
->name
, w
->power
? "On":"Off");
1505 switch (codec
->dapm
.bias_level
) {
1506 case SND_SOC_BIAS_ON
:
1509 case SND_SOC_BIAS_PREPARE
:
1512 case SND_SOC_BIAS_STANDBY
:
1515 case SND_SOC_BIAS_OFF
:
1519 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
1524 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
1526 int snd_soc_dapm_sys_add(struct device
*dev
)
1528 return device_create_file(dev
, &dev_attr_dapm_widget
);
1531 static void snd_soc_dapm_sys_remove(struct device
*dev
)
1533 device_remove_file(dev
, &dev_attr_dapm_widget
);
1536 /* free all dapm widgets and resources */
1537 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
1539 struct snd_soc_dapm_widget
*w
, *next_w
;
1540 struct snd_soc_dapm_path
*p
, *next_p
;
1542 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
1543 if (w
->dapm
!= dapm
)
1547 * remove source and sink paths associated to this widget.
1548 * While removing the path, remove reference to it from both
1549 * source and sink widgets so that path is removed only once.
1551 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
) {
1552 list_del(&p
->list_sink
);
1553 list_del(&p
->list_source
);
1555 kfree(p
->long_name
);
1558 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
) {
1559 list_del(&p
->list_sink
);
1560 list_del(&p
->list_source
);
1562 kfree(p
->long_name
);
1565 kfree(w
->kcontrols
);
1571 static struct snd_soc_dapm_widget
*dapm_find_widget(
1572 struct snd_soc_dapm_context
*dapm
, const char *pin
,
1573 bool search_other_contexts
)
1575 struct snd_soc_dapm_widget
*w
;
1576 struct snd_soc_dapm_widget
*fallback
= NULL
;
1578 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
1579 if (!strcmp(w
->name
, pin
)) {
1580 if (w
->dapm
== dapm
)
1587 if (search_other_contexts
)
1593 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
1594 const char *pin
, int status
)
1596 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
1599 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
1603 w
->connected
= status
;
1611 * snd_soc_dapm_sync - scan and power dapm paths
1612 * @dapm: DAPM context
1614 * Walks all dapm audio paths and powers widgets according to their
1615 * stream or path usage.
1617 * Returns 0 for success.
1619 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
1621 return dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
1623 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
1625 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
1626 const struct snd_soc_dapm_route
*route
)
1628 struct snd_soc_dapm_path
*path
;
1629 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
1630 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
1632 const char *control
= route
->control
;
1634 char prefixed_sink
[80];
1635 char prefixed_source
[80];
1638 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
1639 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
1640 dapm
->codec
->name_prefix
, route
->sink
);
1641 sink
= prefixed_sink
;
1642 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
1643 dapm
->codec
->name_prefix
, route
->source
);
1644 source
= prefixed_source
;
1647 source
= route
->source
;
1651 * find src and dest widgets over all widgets but favor a widget from
1652 * current DAPM context
1654 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
1655 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
1657 if (w
->dapm
== dapm
)
1661 if (!wsource
&& !(strcmp(w
->name
, source
))) {
1663 if (w
->dapm
== dapm
)
1667 /* use widget from another DAPM context if not found from this */
1673 if (wsource
== NULL
|| wsink
== NULL
)
1676 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
1680 path
->source
= wsource
;
1682 path
->connected
= route
->connected
;
1683 INIT_LIST_HEAD(&path
->list
);
1684 INIT_LIST_HEAD(&path
->list_source
);
1685 INIT_LIST_HEAD(&path
->list_sink
);
1687 /* check for external widgets */
1688 if (wsink
->id
== snd_soc_dapm_input
) {
1689 if (wsource
->id
== snd_soc_dapm_micbias
||
1690 wsource
->id
== snd_soc_dapm_mic
||
1691 wsource
->id
== snd_soc_dapm_line
||
1692 wsource
->id
== snd_soc_dapm_output
)
1695 if (wsource
->id
== snd_soc_dapm_output
) {
1696 if (wsink
->id
== snd_soc_dapm_spk
||
1697 wsink
->id
== snd_soc_dapm_hp
||
1698 wsink
->id
== snd_soc_dapm_line
||
1699 wsink
->id
== snd_soc_dapm_input
)
1703 /* connect static paths */
1704 if (control
== NULL
) {
1705 list_add(&path
->list
, &dapm
->card
->paths
);
1706 list_add(&path
->list_sink
, &wsink
->sources
);
1707 list_add(&path
->list_source
, &wsource
->sinks
);
1712 /* connect dynamic paths */
1713 switch (wsink
->id
) {
1714 case snd_soc_dapm_adc
:
1715 case snd_soc_dapm_dac
:
1716 case snd_soc_dapm_pga
:
1717 case snd_soc_dapm_out_drv
:
1718 case snd_soc_dapm_input
:
1719 case snd_soc_dapm_output
:
1720 case snd_soc_dapm_micbias
:
1721 case snd_soc_dapm_vmid
:
1722 case snd_soc_dapm_pre
:
1723 case snd_soc_dapm_post
:
1724 case snd_soc_dapm_supply
:
1725 case snd_soc_dapm_aif_in
:
1726 case snd_soc_dapm_aif_out
:
1727 list_add(&path
->list
, &dapm
->card
->paths
);
1728 list_add(&path
->list_sink
, &wsink
->sources
);
1729 list_add(&path
->list_source
, &wsource
->sinks
);
1732 case snd_soc_dapm_mux
:
1733 case snd_soc_dapm_virt_mux
:
1734 case snd_soc_dapm_value_mux
:
1735 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
1736 &wsink
->kcontrol_news
[0]);
1740 case snd_soc_dapm_switch
:
1741 case snd_soc_dapm_mixer
:
1742 case snd_soc_dapm_mixer_named_ctl
:
1743 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
1747 case snd_soc_dapm_hp
:
1748 case snd_soc_dapm_mic
:
1749 case snd_soc_dapm_line
:
1750 case snd_soc_dapm_spk
:
1751 list_add(&path
->list
, &dapm
->card
->paths
);
1752 list_add(&path
->list_sink
, &wsink
->sources
);
1753 list_add(&path
->list_source
, &wsource
->sinks
);
1760 dev_warn(dapm
->dev
, "asoc: no dapm match for %s --> %s --> %s\n",
1761 source
, control
, sink
);
1767 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
1768 * @dapm: DAPM context
1769 * @route: audio routes
1770 * @num: number of routes
1772 * Connects 2 dapm widgets together via a named audio path. The sink is
1773 * the widget receiving the audio signal, whilst the source is the sender
1774 * of the audio signal.
1776 * Returns 0 for success else error. On error all resources can be freed
1777 * with a call to snd_soc_card_free().
1779 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
1780 const struct snd_soc_dapm_route
*route
, int num
)
1784 for (i
= 0; i
< num
; i
++) {
1785 ret
= snd_soc_dapm_add_route(dapm
, route
);
1787 dev_err(dapm
->dev
, "Failed to add route %s->%s\n",
1788 route
->source
, route
->sink
);
1796 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
1799 * snd_soc_dapm_new_widgets - add new dapm widgets
1800 * @dapm: DAPM context
1802 * Checks the codec for any new dapm widgets and creates them if found.
1804 * Returns 0 for success.
1806 int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context
*dapm
)
1808 struct snd_soc_dapm_widget
*w
;
1811 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
1816 if (w
->num_kcontrols
) {
1817 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
1818 sizeof(struct snd_kcontrol
*),
1825 case snd_soc_dapm_switch
:
1826 case snd_soc_dapm_mixer
:
1827 case snd_soc_dapm_mixer_named_ctl
:
1828 w
->power_check
= dapm_generic_check_power
;
1829 dapm_new_mixer(dapm
, w
);
1831 case snd_soc_dapm_mux
:
1832 case snd_soc_dapm_virt_mux
:
1833 case snd_soc_dapm_value_mux
:
1834 w
->power_check
= dapm_generic_check_power
;
1835 dapm_new_mux(dapm
, w
);
1837 case snd_soc_dapm_adc
:
1838 case snd_soc_dapm_aif_out
:
1839 w
->power_check
= dapm_adc_check_power
;
1841 case snd_soc_dapm_dac
:
1842 case snd_soc_dapm_aif_in
:
1843 w
->power_check
= dapm_dac_check_power
;
1845 case snd_soc_dapm_pga
:
1846 case snd_soc_dapm_out_drv
:
1847 w
->power_check
= dapm_generic_check_power
;
1848 dapm_new_pga(dapm
, w
);
1850 case snd_soc_dapm_input
:
1851 case snd_soc_dapm_output
:
1852 case snd_soc_dapm_micbias
:
1853 case snd_soc_dapm_spk
:
1854 case snd_soc_dapm_hp
:
1855 case snd_soc_dapm_mic
:
1856 case snd_soc_dapm_line
:
1857 w
->power_check
= dapm_generic_check_power
;
1859 case snd_soc_dapm_supply
:
1860 w
->power_check
= dapm_supply_check_power
;
1861 case snd_soc_dapm_vmid
:
1862 case snd_soc_dapm_pre
:
1863 case snd_soc_dapm_post
:
1867 /* Read the initial power state from the device */
1869 val
= snd_soc_read(w
->codec
, w
->reg
);
1870 val
&= 1 << w
->shift
;
1880 dapm_debugfs_add_widget(w
);
1883 dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
1886 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
1889 * snd_soc_dapm_get_volsw - dapm mixer get callback
1890 * @kcontrol: mixer control
1891 * @ucontrol: control element information
1893 * Callback to get the value of a dapm mixer control.
1895 * Returns 0 for success.
1897 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
1898 struct snd_ctl_elem_value
*ucontrol
)
1900 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
1901 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
1902 struct soc_mixer_control
*mc
=
1903 (struct soc_mixer_control
*)kcontrol
->private_value
;
1904 unsigned int reg
= mc
->reg
;
1905 unsigned int shift
= mc
->shift
;
1906 unsigned int rshift
= mc
->rshift
;
1908 unsigned int invert
= mc
->invert
;
1909 unsigned int mask
= (1 << fls(max
)) - 1;
1911 ucontrol
->value
.integer
.value
[0] =
1912 (snd_soc_read(widget
->codec
, reg
) >> shift
) & mask
;
1913 if (shift
!= rshift
)
1914 ucontrol
->value
.integer
.value
[1] =
1915 (snd_soc_read(widget
->codec
, reg
) >> rshift
) & mask
;
1917 ucontrol
->value
.integer
.value
[0] =
1918 max
- ucontrol
->value
.integer
.value
[0];
1919 if (shift
!= rshift
)
1920 ucontrol
->value
.integer
.value
[1] =
1921 max
- ucontrol
->value
.integer
.value
[1];
1926 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
1929 * snd_soc_dapm_put_volsw - dapm mixer set callback
1930 * @kcontrol: mixer control
1931 * @ucontrol: control element information
1933 * Callback to set the value of a dapm mixer control.
1935 * Returns 0 for success.
1937 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
1938 struct snd_ctl_elem_value
*ucontrol
)
1940 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
1941 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
1942 struct snd_soc_codec
*codec
= widget
->codec
;
1943 struct soc_mixer_control
*mc
=
1944 (struct soc_mixer_control
*)kcontrol
->private_value
;
1945 unsigned int reg
= mc
->reg
;
1946 unsigned int shift
= mc
->shift
;
1948 unsigned int mask
= (1 << fls(max
)) - 1;
1949 unsigned int invert
= mc
->invert
;
1951 int connect
, change
;
1952 struct snd_soc_dapm_update update
;
1955 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
1959 mask
= mask
<< shift
;
1963 /* new connection */
1964 connect
= invert
? 0 : 1;
1966 /* old connection must be powered down */
1967 connect
= invert
? 1 : 0;
1969 mutex_lock(&codec
->mutex
);
1971 change
= snd_soc_test_bits(widget
->codec
, reg
, mask
, val
);
1973 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
1974 widget
= wlist
->widgets
[wi
];
1976 widget
->value
= val
;
1978 update
.kcontrol
= kcontrol
;
1979 update
.widget
= widget
;
1983 widget
->dapm
->update
= &update
;
1985 dapm_mixer_update_power(widget
, kcontrol
, connect
);
1987 widget
->dapm
->update
= NULL
;
1991 mutex_unlock(&codec
->mutex
);
1994 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
1997 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
1998 * @kcontrol: mixer control
1999 * @ucontrol: control element information
2001 * Callback to get the value of a dapm enumerated double mixer control.
2003 * Returns 0 for success.
2005 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2006 struct snd_ctl_elem_value
*ucontrol
)
2008 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2009 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2010 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2011 unsigned int val
, bitmask
;
2013 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2015 val
= snd_soc_read(widget
->codec
, e
->reg
);
2016 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & (bitmask
- 1);
2017 if (e
->shift_l
!= e
->shift_r
)
2018 ucontrol
->value
.enumerated
.item
[1] =
2019 (val
>> e
->shift_r
) & (bitmask
- 1);
2023 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2026 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2027 * @kcontrol: mixer control
2028 * @ucontrol: control element information
2030 * Callback to set the value of a dapm enumerated double mixer control.
2032 * Returns 0 for success.
2034 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2035 struct snd_ctl_elem_value
*ucontrol
)
2037 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2038 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2039 struct snd_soc_codec
*codec
= widget
->codec
;
2040 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2041 unsigned int val
, mux
, change
;
2042 unsigned int mask
, bitmask
;
2043 struct snd_soc_dapm_update update
;
2046 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2048 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2050 mux
= ucontrol
->value
.enumerated
.item
[0];
2051 val
= mux
<< e
->shift_l
;
2052 mask
= (bitmask
- 1) << e
->shift_l
;
2053 if (e
->shift_l
!= e
->shift_r
) {
2054 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2056 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2057 mask
|= (bitmask
- 1) << e
->shift_r
;
2060 mutex_lock(&codec
->mutex
);
2062 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2064 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2065 widget
= wlist
->widgets
[wi
];
2067 widget
->value
= val
;
2069 update
.kcontrol
= kcontrol
;
2070 update
.widget
= widget
;
2071 update
.reg
= e
->reg
;
2074 widget
->dapm
->update
= &update
;
2076 dapm_mux_update_power(widget
, kcontrol
, change
, mux
, e
);
2078 widget
->dapm
->update
= NULL
;
2082 mutex_unlock(&codec
->mutex
);
2085 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2088 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2089 * @kcontrol: mixer control
2090 * @ucontrol: control element information
2092 * Returns 0 for success.
2094 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
2095 struct snd_ctl_elem_value
*ucontrol
)
2097 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2098 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2100 ucontrol
->value
.enumerated
.item
[0] = widget
->value
;
2104 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
2107 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2108 * @kcontrol: mixer control
2109 * @ucontrol: control element information
2111 * Returns 0 for success.
2113 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
2114 struct snd_ctl_elem_value
*ucontrol
)
2116 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2117 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2118 struct snd_soc_codec
*codec
= widget
->codec
;
2119 struct soc_enum
*e
=
2120 (struct soc_enum
*)kcontrol
->private_value
;
2125 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
2128 mutex_lock(&codec
->mutex
);
2130 change
= widget
->value
!= ucontrol
->value
.enumerated
.item
[0];
2132 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2133 widget
= wlist
->widgets
[wi
];
2135 widget
->value
= ucontrol
->value
.enumerated
.item
[0];
2137 dapm_mux_update_power(widget
, kcontrol
, change
,
2142 mutex_unlock(&codec
->mutex
);
2145 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
2148 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2150 * @kcontrol: mixer control
2151 * @ucontrol: control element information
2153 * Callback to get the value of a dapm semi enumerated double mixer control.
2155 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2156 * used for handling bitfield coded enumeration for example.
2158 * Returns 0 for success.
2160 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2161 struct snd_ctl_elem_value
*ucontrol
)
2163 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2164 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2165 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2166 unsigned int reg_val
, val
, mux
;
2168 reg_val
= snd_soc_read(widget
->codec
, e
->reg
);
2169 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2170 for (mux
= 0; mux
< e
->max
; mux
++) {
2171 if (val
== e
->values
[mux
])
2174 ucontrol
->value
.enumerated
.item
[0] = mux
;
2175 if (e
->shift_l
!= e
->shift_r
) {
2176 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2177 for (mux
= 0; mux
< e
->max
; mux
++) {
2178 if (val
== e
->values
[mux
])
2181 ucontrol
->value
.enumerated
.item
[1] = mux
;
2186 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
2189 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2191 * @kcontrol: mixer control
2192 * @ucontrol: control element information
2194 * Callback to set the value of a dapm semi enumerated double mixer control.
2196 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2197 * used for handling bitfield coded enumeration for example.
2199 * Returns 0 for success.
2201 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2202 struct snd_ctl_elem_value
*ucontrol
)
2204 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2205 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2206 struct snd_soc_codec
*codec
= widget
->codec
;
2207 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2208 unsigned int val
, mux
, change
;
2210 struct snd_soc_dapm_update update
;
2213 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2215 mux
= ucontrol
->value
.enumerated
.item
[0];
2216 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2217 mask
= e
->mask
<< e
->shift_l
;
2218 if (e
->shift_l
!= e
->shift_r
) {
2219 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2221 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2222 mask
|= e
->mask
<< e
->shift_r
;
2225 mutex_lock(&codec
->mutex
);
2227 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2229 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2230 widget
= wlist
->widgets
[wi
];
2232 widget
->value
= val
;
2234 update
.kcontrol
= kcontrol
;
2235 update
.widget
= widget
;
2236 update
.reg
= e
->reg
;
2239 widget
->dapm
->update
= &update
;
2241 dapm_mux_update_power(widget
, kcontrol
, change
, mux
, e
);
2243 widget
->dapm
->update
= NULL
;
2247 mutex_unlock(&codec
->mutex
);
2250 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
2253 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2255 * @kcontrol: mixer control
2256 * @uinfo: control element information
2258 * Callback to provide information about a pin switch control.
2260 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
2261 struct snd_ctl_elem_info
*uinfo
)
2263 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2265 uinfo
->value
.integer
.min
= 0;
2266 uinfo
->value
.integer
.max
= 1;
2270 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
2273 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2275 * @kcontrol: mixer control
2278 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
2279 struct snd_ctl_elem_value
*ucontrol
)
2281 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2282 const char *pin
= (const char *)kcontrol
->private_value
;
2284 mutex_lock(&codec
->mutex
);
2286 ucontrol
->value
.integer
.value
[0] =
2287 snd_soc_dapm_get_pin_status(&codec
->dapm
, pin
);
2289 mutex_unlock(&codec
->mutex
);
2293 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
2296 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
2298 * @kcontrol: mixer control
2301 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
2302 struct snd_ctl_elem_value
*ucontrol
)
2304 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2305 const char *pin
= (const char *)kcontrol
->private_value
;
2307 mutex_lock(&codec
->mutex
);
2309 if (ucontrol
->value
.integer
.value
[0])
2310 snd_soc_dapm_enable_pin(&codec
->dapm
, pin
);
2312 snd_soc_dapm_disable_pin(&codec
->dapm
, pin
);
2314 snd_soc_dapm_sync(&codec
->dapm
);
2316 mutex_unlock(&codec
->mutex
);
2320 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
2323 * snd_soc_dapm_new_control - create new dapm control
2324 * @dapm: DAPM context
2325 * @widget: widget template
2327 * Creates a new dapm control based upon the template.
2329 * Returns 0 for success else error.
2331 int snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
2332 const struct snd_soc_dapm_widget
*widget
)
2334 struct snd_soc_dapm_widget
*w
;
2337 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
2340 name_len
= strlen(widget
->name
) + 1;
2341 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
2342 name_len
+= 1 + strlen(dapm
->codec
->name_prefix
);
2343 w
->name
= kmalloc(name_len
, GFP_KERNEL
);
2344 if (w
->name
== NULL
) {
2348 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
2349 snprintf(w
->name
, name_len
, "%s %s",
2350 dapm
->codec
->name_prefix
, widget
->name
);
2352 snprintf(w
->name
, name_len
, "%s", widget
->name
);
2356 w
->codec
= dapm
->codec
;
2357 INIT_LIST_HEAD(&w
->sources
);
2358 INIT_LIST_HEAD(&w
->sinks
);
2359 INIT_LIST_HEAD(&w
->list
);
2360 list_add(&w
->list
, &dapm
->card
->widgets
);
2362 /* machine layer set ups unconnected pins and insertions */
2366 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control
);
2369 * snd_soc_dapm_new_controls - create new dapm controls
2370 * @dapm: DAPM context
2371 * @widget: widget array
2372 * @num: number of widgets
2374 * Creates new DAPM controls based upon the templates.
2376 * Returns 0 for success else error.
2378 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
2379 const struct snd_soc_dapm_widget
*widget
,
2384 for (i
= 0; i
< num
; i
++) {
2385 ret
= snd_soc_dapm_new_control(dapm
, widget
);
2388 "ASoC: Failed to create DAPM control %s: %d\n",
2396 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
2398 static void soc_dapm_stream_event(struct snd_soc_dapm_context
*dapm
,
2399 const char *stream
, int event
)
2401 struct snd_soc_dapm_widget
*w
;
2403 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2405 if (!w
->sname
|| w
->dapm
!= dapm
)
2407 dev_dbg(w
->dapm
->dev
, "widget %s\n %s stream %s event %d\n",
2408 w
->name
, w
->sname
, stream
, event
);
2409 if (strstr(w
->sname
, stream
)) {
2411 case SND_SOC_DAPM_STREAM_START
:
2414 case SND_SOC_DAPM_STREAM_STOP
:
2417 case SND_SOC_DAPM_STREAM_SUSPEND
:
2418 case SND_SOC_DAPM_STREAM_RESUME
:
2419 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
2420 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
2426 dapm_power_widgets(dapm
, event
);
2430 * snd_soc_dapm_stream_event - send a stream event to the dapm core
2431 * @rtd: PCM runtime data
2432 * @stream: stream name
2433 * @event: stream event
2435 * Sends a stream event to the dapm core. The core then makes any
2436 * necessary widget power changes.
2438 * Returns 0 for success else error.
2440 int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
,
2441 const char *stream
, int event
)
2443 struct snd_soc_codec
*codec
= rtd
->codec
;
2448 mutex_lock(&codec
->mutex
);
2449 soc_dapm_stream_event(&codec
->dapm
, stream
, event
);
2450 mutex_unlock(&codec
->mutex
);
2455 * snd_soc_dapm_enable_pin - enable pin.
2456 * @dapm: DAPM context
2459 * Enables input/output pin and its parents or children widgets iff there is
2460 * a valid audio route and active audio stream.
2461 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2462 * do any widget power switching.
2464 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
2466 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
2468 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
2471 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
2472 * @dapm: DAPM context
2475 * Enables input/output pin regardless of any other state. This is
2476 * intended for use with microphone bias supplies used in microphone
2479 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2480 * do any widget power switching.
2482 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
2485 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2488 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
2492 dev_dbg(w
->dapm
->dev
, "dapm: force enable pin %s\n", pin
);
2498 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
2501 * snd_soc_dapm_disable_pin - disable pin.
2502 * @dapm: DAPM context
2505 * Disables input/output pin and its parents or children widgets.
2506 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2507 * do any widget power switching.
2509 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
2512 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
2514 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
2517 * snd_soc_dapm_nc_pin - permanently disable pin.
2518 * @dapm: DAPM context
2521 * Marks the specified pin as being not connected, disabling it along
2522 * any parent or child widgets. At present this is identical to
2523 * snd_soc_dapm_disable_pin() but in future it will be extended to do
2524 * additional things such as disabling controls which only affect
2525 * paths through the pin.
2527 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2528 * do any widget power switching.
2530 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
2532 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
2534 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
2537 * snd_soc_dapm_get_pin_status - get audio pin status
2538 * @dapm: DAPM context
2539 * @pin: audio signal pin endpoint (or start point)
2541 * Get audio pin status - connected or disconnected.
2543 * Returns 1 for connected otherwise 0.
2545 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
2548 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2551 return w
->connected
;
2555 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
2558 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
2559 * @dapm: DAPM context
2560 * @pin: audio signal pin endpoint (or start point)
2562 * Mark the given endpoint or pin as ignoring suspend. When the
2563 * system is disabled a path between two endpoints flagged as ignoring
2564 * suspend will not be disabled. The path must already be enabled via
2565 * normal means at suspend time, it will not be turned on if it was not
2568 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
2571 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
2574 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
2578 w
->ignore_suspend
= 1;
2582 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
2585 * snd_soc_dapm_free - free dapm resources
2588 * Free all dapm widgets and resources.
2590 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
2592 snd_soc_dapm_sys_remove(dapm
->dev
);
2593 dapm_debugfs_cleanup(dapm
);
2594 dapm_free_widgets(dapm
);
2595 list_del(&dapm
->list
);
2597 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
2599 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context
*dapm
)
2601 struct snd_soc_dapm_widget
*w
;
2602 LIST_HEAD(down_list
);
2605 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2606 if (w
->dapm
!= dapm
)
2609 dapm_seq_insert(w
, &down_list
, false);
2615 /* If there were no widgets to power down we're already in
2619 snd_soc_dapm_set_bias_level(dapm
, SND_SOC_BIAS_PREPARE
);
2620 dapm_seq_run(dapm
, &down_list
, 0, false);
2621 snd_soc_dapm_set_bias_level(dapm
, SND_SOC_BIAS_STANDBY
);
2626 * snd_soc_dapm_shutdown - callback for system shutdown
2628 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
2630 struct snd_soc_codec
*codec
;
2632 list_for_each_entry(codec
, &card
->codec_dev_list
, list
) {
2633 soc_dapm_shutdown_codec(&codec
->dapm
);
2634 snd_soc_dapm_set_bias_level(&codec
->dapm
, SND_SOC_BIAS_OFF
);
2638 /* Module information */
2639 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
2640 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
2641 MODULE_LICENSE("GPL");