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 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
53 /* dapm power sequences - make this per codec in the future */
54 static int dapm_up_seq
[] = {
55 [snd_soc_dapm_pre
] = 0,
56 [snd_soc_dapm_supply
] = 1,
57 [snd_soc_dapm_micbias
] = 2,
58 [snd_soc_dapm_aif_in
] = 3,
59 [snd_soc_dapm_aif_out
] = 3,
60 [snd_soc_dapm_mic
] = 4,
61 [snd_soc_dapm_mux
] = 5,
62 [snd_soc_dapm_virt_mux
] = 5,
63 [snd_soc_dapm_value_mux
] = 5,
64 [snd_soc_dapm_dac
] = 6,
65 [snd_soc_dapm_mixer
] = 7,
66 [snd_soc_dapm_mixer_named_ctl
] = 7,
67 [snd_soc_dapm_pga
] = 8,
68 [snd_soc_dapm_adc
] = 9,
69 [snd_soc_dapm_out_drv
] = 10,
70 [snd_soc_dapm_hp
] = 10,
71 [snd_soc_dapm_spk
] = 10,
72 [snd_soc_dapm_post
] = 11,
75 static int dapm_down_seq
[] = {
76 [snd_soc_dapm_pre
] = 0,
77 [snd_soc_dapm_adc
] = 1,
78 [snd_soc_dapm_hp
] = 2,
79 [snd_soc_dapm_spk
] = 2,
80 [snd_soc_dapm_out_drv
] = 2,
81 [snd_soc_dapm_pga
] = 4,
82 [snd_soc_dapm_mixer_named_ctl
] = 5,
83 [snd_soc_dapm_mixer
] = 5,
84 [snd_soc_dapm_dac
] = 6,
85 [snd_soc_dapm_mic
] = 7,
86 [snd_soc_dapm_micbias
] = 8,
87 [snd_soc_dapm_mux
] = 9,
88 [snd_soc_dapm_virt_mux
] = 9,
89 [snd_soc_dapm_value_mux
] = 9,
90 [snd_soc_dapm_aif_in
] = 10,
91 [snd_soc_dapm_aif_out
] = 10,
92 [snd_soc_dapm_supply
] = 11,
93 [snd_soc_dapm_post
] = 12,
96 static void pop_wait(u32 pop_time
)
99 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
102 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
110 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
115 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
116 dev_info(dev
, "%s", buf
);
122 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
124 return !list_empty(&w
->dirty
);
127 static void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
129 if (!dapm_dirty_widget(w
)) {
130 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
132 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
136 /* create a new dapm widget */
137 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
138 const struct snd_soc_dapm_widget
*_widget
)
140 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
143 /* get snd_card from DAPM context */
144 static inline struct snd_card
*dapm_get_snd_card(
145 struct snd_soc_dapm_context
*dapm
)
148 return dapm
->codec
->card
->snd_card
;
149 else if (dapm
->platform
)
150 return dapm
->platform
->card
->snd_card
;
158 /* get soc_card from DAPM context */
159 static inline struct snd_soc_card
*dapm_get_soc_card(
160 struct snd_soc_dapm_context
*dapm
)
163 return dapm
->codec
->card
;
164 else if (dapm
->platform
)
165 return dapm
->platform
->card
;
173 static int soc_widget_read(struct snd_soc_dapm_widget
*w
, int reg
)
176 return snd_soc_read(w
->codec
, reg
);
177 else if (w
->platform
)
178 return snd_soc_platform_read(w
->platform
, reg
);
180 dev_err(w
->dapm
->dev
, "no valid widget read method\n");
184 static int soc_widget_write(struct snd_soc_dapm_widget
*w
, int reg
, int val
)
187 return snd_soc_write(w
->codec
, reg
, val
);
188 else if (w
->platform
)
189 return snd_soc_platform_write(w
->platform
, reg
, val
);
191 dev_err(w
->dapm
->dev
, "no valid widget write method\n");
195 static int soc_widget_update_bits(struct snd_soc_dapm_widget
*w
,
196 unsigned short reg
, unsigned int mask
, unsigned int value
)
199 unsigned int old
, new;
202 ret
= soc_widget_read(w
, reg
);
207 new = (old
& ~mask
) | (value
& mask
);
210 ret
= soc_widget_write(w
, reg
, new);
219 * snd_soc_dapm_set_bias_level - set the bias level for the system
220 * @dapm: DAPM context
221 * @level: level to configure
223 * Configure the bias (power) levels for the SoC audio device.
225 * Returns 0 for success else error.
227 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
228 enum snd_soc_bias_level level
)
230 struct snd_soc_card
*card
= dapm
->card
;
233 trace_snd_soc_bias_level_start(card
, level
);
235 if (card
&& card
->set_bias_level
)
236 ret
= card
->set_bias_level(card
, dapm
, level
);
241 if (dapm
->codec
->driver
->set_bias_level
)
242 ret
= dapm
->codec
->driver
->set_bias_level(dapm
->codec
,
245 dapm
->bias_level
= level
;
250 if (card
&& card
->set_bias_level_post
)
251 ret
= card
->set_bias_level_post(card
, dapm
, level
);
253 trace_snd_soc_bias_level_done(card
, level
);
258 /* set up initial codec paths */
259 static void dapm_set_path_status(struct snd_soc_dapm_widget
*w
,
260 struct snd_soc_dapm_path
*p
, int i
)
263 case snd_soc_dapm_switch
:
264 case snd_soc_dapm_mixer
:
265 case snd_soc_dapm_mixer_named_ctl
: {
267 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
268 w
->kcontrol_news
[i
].private_value
;
269 unsigned int reg
= mc
->reg
;
270 unsigned int shift
= mc
->shift
;
272 unsigned int mask
= (1 << fls(max
)) - 1;
273 unsigned int invert
= mc
->invert
;
275 val
= soc_widget_read(w
, reg
);
276 val
= (val
>> shift
) & mask
;
278 if ((invert
&& !val
) || (!invert
&& val
))
284 case snd_soc_dapm_mux
: {
285 struct soc_enum
*e
= (struct soc_enum
*)
286 w
->kcontrol_news
[i
].private_value
;
287 int val
, item
, bitmask
;
289 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
291 val
= soc_widget_read(w
, e
->reg
);
292 item
= (val
>> e
->shift_l
) & (bitmask
- 1);
295 for (i
= 0; i
< e
->max
; i
++) {
296 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
301 case snd_soc_dapm_virt_mux
: {
302 struct soc_enum
*e
= (struct soc_enum
*)
303 w
->kcontrol_news
[i
].private_value
;
306 /* since a virtual mux has no backing registers to
307 * decide which path to connect, it will try to match
308 * with the first enumeration. This is to ensure
309 * that the default mux choice (the first) will be
310 * correctly powered up during initialization.
312 if (!strcmp(p
->name
, e
->texts
[0]))
316 case snd_soc_dapm_value_mux
: {
317 struct soc_enum
*e
= (struct soc_enum
*)
318 w
->kcontrol_news
[i
].private_value
;
321 val
= soc_widget_read(w
, e
->reg
);
322 val
= (val
>> e
->shift_l
) & e
->mask
;
323 for (item
= 0; item
< e
->max
; item
++) {
324 if (val
== e
->values
[item
])
329 for (i
= 0; i
< e
->max
; i
++) {
330 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
335 /* does not affect routing - always connected */
336 case snd_soc_dapm_pga
:
337 case snd_soc_dapm_out_drv
:
338 case snd_soc_dapm_output
:
339 case snd_soc_dapm_adc
:
340 case snd_soc_dapm_input
:
341 case snd_soc_dapm_dac
:
342 case snd_soc_dapm_micbias
:
343 case snd_soc_dapm_vmid
:
344 case snd_soc_dapm_supply
:
345 case snd_soc_dapm_aif_in
:
346 case snd_soc_dapm_aif_out
:
347 case snd_soc_dapm_hp
:
348 case snd_soc_dapm_mic
:
349 case snd_soc_dapm_spk
:
350 case snd_soc_dapm_line
:
353 /* does affect routing - dynamically connected */
354 case snd_soc_dapm_pre
:
355 case snd_soc_dapm_post
:
361 /* connect mux widget to its interconnecting audio paths */
362 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
363 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
364 struct snd_soc_dapm_path
*path
, const char *control_name
,
365 const struct snd_kcontrol_new
*kcontrol
)
367 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
370 for (i
= 0; i
< e
->max
; i
++) {
371 if (!(strcmp(control_name
, e
->texts
[i
]))) {
372 list_add(&path
->list
, &dapm
->card
->paths
);
373 list_add(&path
->list_sink
, &dest
->sources
);
374 list_add(&path
->list_source
, &src
->sinks
);
375 path
->name
= (char*)e
->texts
[i
];
376 dapm_set_path_status(dest
, path
, 0);
384 /* connect mixer widget to its interconnecting audio paths */
385 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
386 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
387 struct snd_soc_dapm_path
*path
, const char *control_name
)
391 /* search for mixer kcontrol */
392 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
393 if (!strcmp(control_name
, dest
->kcontrol_news
[i
].name
)) {
394 list_add(&path
->list
, &dapm
->card
->paths
);
395 list_add(&path
->list_sink
, &dest
->sources
);
396 list_add(&path
->list_source
, &src
->sinks
);
397 path
->name
= dest
->kcontrol_news
[i
].name
;
398 dapm_set_path_status(dest
, path
, i
);
405 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
406 struct snd_soc_dapm_widget
*kcontrolw
,
407 const struct snd_kcontrol_new
*kcontrol_new
,
408 struct snd_kcontrol
**kcontrol
)
410 struct snd_soc_dapm_widget
*w
;
415 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
416 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
418 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
419 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
421 *kcontrol
= w
->kcontrols
[i
];
430 /* create new dapm mixer control */
431 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
433 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
435 size_t name_len
, prefix_len
;
436 struct snd_soc_dapm_path
*path
;
437 struct snd_card
*card
= dapm
->card
->snd_card
;
439 struct snd_soc_dapm_widget_list
*wlist
;
443 prefix
= dapm
->codec
->name_prefix
;
448 prefix_len
= strlen(prefix
) + 1;
453 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
456 list_for_each_entry(path
, &w
->sources
, list_sink
) {
458 /* mixer/mux paths name must match control name */
459 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
462 if (w
->kcontrols
[i
]) {
463 path
->kcontrol
= w
->kcontrols
[i
];
467 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
468 sizeof(struct snd_soc_dapm_widget
*),
469 wlist
= kzalloc(wlistsize
, GFP_KERNEL
);
472 "asoc: can't allocate widget list for %s\n",
476 wlist
->num_widgets
= 1;
477 wlist
->widgets
[0] = w
;
479 /* add dapm control with long name.
480 * for dapm_mixer this is the concatenation of the
481 * mixer and kcontrol name.
482 * for dapm_mixer_named_ctl this is simply the
485 name_len
= strlen(w
->kcontrol_news
[i
].name
) + 1;
486 if (w
->id
!= snd_soc_dapm_mixer_named_ctl
)
487 name_len
+= 1 + strlen(w
->name
);
489 path
->long_name
= kmalloc(name_len
, GFP_KERNEL
);
491 if (path
->long_name
== NULL
) {
498 /* The control will get a prefix from
499 * the control creation process but
500 * we're also using the same prefix
501 * for widgets so cut the prefix off
502 * the front of the widget name.
504 snprintf(path
->long_name
, name_len
, "%s %s",
505 w
->name
+ prefix_len
,
506 w
->kcontrol_news
[i
].name
);
508 case snd_soc_dapm_mixer_named_ctl
:
509 snprintf(path
->long_name
, name_len
, "%s",
510 w
->kcontrol_news
[i
].name
);
514 path
->long_name
[name_len
- 1] = '\0';
516 path
->kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
],
517 wlist
, path
->long_name
,
519 ret
= snd_ctl_add(card
, path
->kcontrol
);
522 "asoc: failed to add dapm kcontrol %s: %d\n",
523 path
->long_name
, ret
);
525 kfree(path
->long_name
);
526 path
->long_name
= NULL
;
529 w
->kcontrols
[i
] = path
->kcontrol
;
535 /* create new dapm mux control */
536 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
538 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
539 struct snd_soc_dapm_path
*path
= NULL
;
540 struct snd_kcontrol
*kcontrol
;
541 struct snd_card
*card
= dapm
->card
->snd_card
;
545 struct snd_soc_dapm_widget_list
*wlist
;
546 int shared
, wlistentries
;
550 if (w
->num_kcontrols
!= 1) {
552 "asoc: mux %s has incorrect number of controls\n",
557 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[0],
560 wlist
= kcontrol
->private_data
;
561 wlistentries
= wlist
->num_widgets
+ 1;
566 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
567 wlistentries
* sizeof(struct snd_soc_dapm_widget
*),
568 wlist
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
571 "asoc: can't allocate widget list for %s\n", w
->name
);
574 wlist
->num_widgets
= wlistentries
;
575 wlist
->widgets
[wlistentries
- 1] = w
;
579 prefix
= dapm
->codec
->name_prefix
;
584 name
= w
->kcontrol_news
[0].name
;
589 prefix_len
= strlen(prefix
) + 1;
595 * The control will get a prefix from the control creation
596 * process but we're also using the same prefix for widgets so
597 * cut the prefix off the front of the widget name.
599 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[0], wlist
,
600 name
+ prefix_len
, prefix
);
601 ret
= snd_ctl_add(card
, kcontrol
);
603 dev_err(dapm
->dev
, "failed to add kcontrol %s: %d\n",
610 kcontrol
->private_data
= wlist
;
612 w
->kcontrols
[0] = kcontrol
;
614 list_for_each_entry(path
, &w
->sources
, list_sink
)
615 path
->kcontrol
= kcontrol
;
620 /* create new dapm volume control */
621 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
623 if (w
->num_kcontrols
)
624 dev_err(w
->dapm
->dev
,
625 "asoc: PGA controls not supported: '%s'\n", w
->name
);
630 /* reset 'walked' bit for each dapm path */
631 static inline void dapm_clear_walk(struct snd_soc_dapm_context
*dapm
)
633 struct snd_soc_dapm_path
*p
;
635 list_for_each_entry(p
, &dapm
->card
->paths
, list
)
639 /* We implement power down on suspend by checking the power state of
640 * the ALSA card - when we are suspending the ALSA state for the card
643 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
645 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
648 case SNDRV_CTL_POWER_D3hot
:
649 case SNDRV_CTL_POWER_D3cold
:
650 if (widget
->ignore_suspend
)
651 dev_dbg(widget
->dapm
->dev
, "%s ignoring suspend\n",
653 return widget
->ignore_suspend
;
660 * Recursively check for a completed path to an active or physically connected
661 * output widget. Returns number of complete paths.
663 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
)
665 struct snd_soc_dapm_path
*path
;
668 if (widget
->outputs
>= 0)
669 return widget
->outputs
;
671 DAPM_UPDATE_STAT(widget
, path_checks
);
673 if (widget
->id
== snd_soc_dapm_supply
)
676 switch (widget
->id
) {
677 case snd_soc_dapm_adc
:
678 case snd_soc_dapm_aif_out
:
679 if (widget
->active
) {
680 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
681 return widget
->outputs
;
687 if (widget
->connected
) {
688 /* connected pin ? */
689 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
) {
690 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
691 return widget
->outputs
;
694 /* connected jack or spk ? */
695 if (widget
->id
== snd_soc_dapm_hp
||
696 widget
->id
== snd_soc_dapm_spk
||
697 (widget
->id
== snd_soc_dapm_line
&&
698 !list_empty(&widget
->sources
))) {
699 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
700 return widget
->outputs
;
704 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
705 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
713 if (path
->sink
&& path
->connect
) {
715 con
+= is_connected_output_ep(path
->sink
);
719 widget
->outputs
= con
;
725 * Recursively check for a completed path to an active or physically connected
726 * input widget. Returns number of complete paths.
728 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
)
730 struct snd_soc_dapm_path
*path
;
733 if (widget
->inputs
>= 0)
734 return widget
->inputs
;
736 DAPM_UPDATE_STAT(widget
, path_checks
);
738 if (widget
->id
== snd_soc_dapm_supply
)
741 /* active stream ? */
742 switch (widget
->id
) {
743 case snd_soc_dapm_dac
:
744 case snd_soc_dapm_aif_in
:
745 if (widget
->active
) {
746 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
747 return widget
->inputs
;
753 if (widget
->connected
) {
754 /* connected pin ? */
755 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
) {
756 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
757 return widget
->inputs
;
760 /* connected VMID/Bias for lower pops */
761 if (widget
->id
== snd_soc_dapm_vmid
) {
762 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
763 return widget
->inputs
;
766 /* connected jack ? */
767 if (widget
->id
== snd_soc_dapm_mic
||
768 (widget
->id
== snd_soc_dapm_line
&&
769 !list_empty(&widget
->sinks
))) {
770 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
771 return widget
->inputs
;
776 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
777 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
785 if (path
->source
&& path
->connect
) {
787 con
+= is_connected_input_ep(path
->source
);
791 widget
->inputs
= con
;
797 * Handler for generic register modifier widget.
799 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
800 struct snd_kcontrol
*kcontrol
, int event
)
804 if (SND_SOC_DAPM_EVENT_ON(event
))
809 soc_widget_update_bits(w
, -(w
->reg
+ 1),
810 w
->mask
<< w
->shift
, val
<< w
->shift
);
814 EXPORT_SYMBOL_GPL(dapm_reg_event
);
816 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
818 if (w
->power_checked
)
824 w
->new_power
= w
->power_check(w
);
826 w
->power_checked
= true;
831 /* Generic check to see if a widget should be powered.
833 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
837 DAPM_UPDATE_STAT(w
, power_checks
);
839 in
= is_connected_input_ep(w
);
840 dapm_clear_walk(w
->dapm
);
841 out
= is_connected_output_ep(w
);
842 dapm_clear_walk(w
->dapm
);
843 return out
!= 0 && in
!= 0;
846 /* Check to see if an ADC has power */
847 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
851 DAPM_UPDATE_STAT(w
, power_checks
);
854 in
= is_connected_input_ep(w
);
855 dapm_clear_walk(w
->dapm
);
858 return dapm_generic_check_power(w
);
862 /* Check to see if a DAC has power */
863 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
867 DAPM_UPDATE_STAT(w
, power_checks
);
870 out
= is_connected_output_ep(w
);
871 dapm_clear_walk(w
->dapm
);
874 return dapm_generic_check_power(w
);
878 /* Check to see if a power supply is needed */
879 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
881 struct snd_soc_dapm_path
*path
;
883 DAPM_UPDATE_STAT(w
, power_checks
);
885 /* Check if one of our outputs is connected */
886 list_for_each_entry(path
, &w
->sinks
, list_source
) {
887 DAPM_UPDATE_STAT(w
, neighbour_checks
);
892 if (path
->connected
&&
893 !path
->connected(path
->source
, path
->sink
))
899 if (dapm_widget_power_check(path
->sink
))
903 dapm_clear_walk(w
->dapm
);
908 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
913 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
914 struct snd_soc_dapm_widget
*b
,
922 sort
= dapm_down_seq
;
924 if (sort
[a
->id
] != sort
[b
->id
])
925 return sort
[a
->id
] - sort
[b
->id
];
926 if (a
->subseq
!= b
->subseq
) {
928 return a
->subseq
- b
->subseq
;
930 return b
->subseq
- a
->subseq
;
932 if (a
->reg
!= b
->reg
)
933 return a
->reg
- b
->reg
;
934 if (a
->dapm
!= b
->dapm
)
935 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
940 /* Insert a widget in order into a DAPM power sequence. */
941 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
942 struct list_head
*list
,
945 struct snd_soc_dapm_widget
*w
;
947 list_for_each_entry(w
, list
, power_list
)
948 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
949 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
953 list_add_tail(&new_widget
->power_list
, list
);
956 static void dapm_seq_check_event(struct snd_soc_dapm_context
*dapm
,
957 struct snd_soc_dapm_widget
*w
, int event
)
959 struct snd_soc_card
*card
= dapm
->card
;
964 case SND_SOC_DAPM_PRE_PMU
:
968 case SND_SOC_DAPM_POST_PMU
:
969 ev_name
= "POST_PMU";
972 case SND_SOC_DAPM_PRE_PMD
:
976 case SND_SOC_DAPM_POST_PMD
:
977 ev_name
= "POST_PMD";
985 if (w
->power
!= power
)
988 if (w
->event
&& (w
->event_flags
& event
)) {
989 pop_dbg(dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
991 trace_snd_soc_dapm_widget_event_start(w
, event
);
992 ret
= w
->event(w
, NULL
, event
);
993 trace_snd_soc_dapm_widget_event_done(w
, event
);
995 pr_err("%s: %s event failed: %d\n",
996 ev_name
, w
->name
, ret
);
1000 /* Apply the coalesced changes from a DAPM sequence */
1001 static void dapm_seq_run_coalesced(struct snd_soc_dapm_context
*dapm
,
1002 struct list_head
*pending
)
1004 struct snd_soc_card
*card
= dapm
->card
;
1005 struct snd_soc_dapm_widget
*w
;
1007 unsigned int value
= 0;
1008 unsigned int mask
= 0;
1009 unsigned int cur_mask
;
1011 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1014 list_for_each_entry(w
, pending
, power_list
) {
1015 cur_mask
= 1 << w
->shift
;
1016 BUG_ON(reg
!= w
->reg
);
1027 pop_dbg(dapm
->dev
, card
->pop_time
,
1028 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1029 w
->name
, reg
, value
, mask
);
1031 /* Check for events */
1032 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMU
);
1033 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMD
);
1037 /* Any widget will do, they should all be updating the
1040 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1043 pop_dbg(dapm
->dev
, card
->pop_time
,
1044 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1045 value
, mask
, reg
, card
->pop_time
);
1046 pop_wait(card
->pop_time
);
1047 soc_widget_update_bits(w
, reg
, mask
, value
);
1050 list_for_each_entry(w
, pending
, power_list
) {
1051 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMU
);
1052 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMD
);
1056 /* Apply a DAPM power sequence.
1058 * We walk over a pre-sorted list of widgets to apply power to. In
1059 * order to minimise the number of writes to the device required
1060 * multiple widgets will be updated in a single write where possible.
1061 * Currently anything that requires more than a single write is not
1064 static void dapm_seq_run(struct snd_soc_dapm_context
*dapm
,
1065 struct list_head
*list
, int event
, bool power_up
)
1067 struct snd_soc_dapm_widget
*w
, *n
;
1070 int cur_subseq
= -1;
1071 int cur_reg
= SND_SOC_NOPM
;
1072 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1079 sort
= dapm_down_seq
;
1081 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1084 /* Do we need to apply any queued changes? */
1085 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1086 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1087 if (!list_empty(&pending
))
1088 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1090 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1091 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1092 if (sort
[i
] == cur_sort
)
1093 cur_dapm
->seq_notifier(cur_dapm
,
1098 INIT_LIST_HEAD(&pending
);
1100 cur_subseq
= INT_MIN
;
1101 cur_reg
= SND_SOC_NOPM
;
1106 case snd_soc_dapm_pre
:
1108 list_for_each_entry_safe_continue(w
, n
, list
,
1111 if (event
== SND_SOC_DAPM_STREAM_START
)
1113 NULL
, SND_SOC_DAPM_PRE_PMU
);
1114 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1116 NULL
, SND_SOC_DAPM_PRE_PMD
);
1119 case snd_soc_dapm_post
:
1121 list_for_each_entry_safe_continue(w
, n
, list
,
1124 if (event
== SND_SOC_DAPM_STREAM_START
)
1126 NULL
, SND_SOC_DAPM_POST_PMU
);
1127 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1129 NULL
, SND_SOC_DAPM_POST_PMD
);
1133 /* Queue it up for application */
1134 cur_sort
= sort
[w
->id
];
1135 cur_subseq
= w
->subseq
;
1138 list_move(&w
->power_list
, &pending
);
1143 dev_err(w
->dapm
->dev
,
1144 "Failed to apply widget power: %d\n", ret
);
1147 if (!list_empty(&pending
))
1148 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1150 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1151 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1152 if (sort
[i
] == cur_sort
)
1153 cur_dapm
->seq_notifier(cur_dapm
,
1158 static void dapm_widget_update(struct snd_soc_dapm_context
*dapm
)
1160 struct snd_soc_dapm_update
*update
= dapm
->update
;
1161 struct snd_soc_dapm_widget
*w
;
1170 (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1171 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1173 pr_err("%s DAPM pre-event failed: %d\n",
1177 ret
= snd_soc_update_bits(w
->codec
, update
->reg
, update
->mask
,
1180 pr_err("%s DAPM update failed: %d\n", w
->name
, ret
);
1183 (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1184 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1186 pr_err("%s DAPM post-event failed: %d\n",
1191 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1192 * they're changing state.
1194 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1196 struct snd_soc_dapm_context
*d
= data
;
1199 /* If we're off and we're not supposed to be go into STANDBY */
1200 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1201 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1202 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1205 "Failed to turn on bias: %d\n", ret
);
1208 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1209 if (d
->bias_level
!= d
->target_bias_level
) {
1210 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1213 "Failed to prepare bias: %d\n", ret
);
1217 /* Async callback run prior to DAPM sequences - brings to their final
1220 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1222 struct snd_soc_dapm_context
*d
= data
;
1225 /* If we just powered the last thing off drop to standby bias */
1226 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1227 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1228 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1229 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1231 dev_err(d
->dev
, "Failed to apply standby bias: %d\n",
1235 /* If we're in standby and can support bias off then do that */
1236 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1237 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1238 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1240 dev_err(d
->dev
, "Failed to turn off bias: %d\n", ret
);
1243 /* If we just powered up then move to active bias */
1244 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1245 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1246 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1248 dev_err(d
->dev
, "Failed to apply active bias: %d\n",
1253 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1254 bool power
, bool connect
)
1256 /* If a connection is being made or broken then that update
1257 * will have marked the peer dirty, otherwise the widgets are
1258 * not connected and this update has no impact. */
1262 /* If the peer is already in the state we're moving to then we
1263 * won't have an impact on it. */
1264 if (power
!= peer
->power
)
1265 dapm_mark_dirty(peer
, "peer state change");
1268 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1269 struct list_head
*up_list
,
1270 struct list_head
*down_list
)
1272 struct snd_soc_dapm_path
*path
;
1274 if (w
->power
== power
)
1277 trace_snd_soc_dapm_widget_power(w
, power
);
1279 /* If we changed our power state perhaps our neigbours changed
1282 list_for_each_entry(path
, &w
->sources
, list_sink
) {
1284 dapm_widget_set_peer_power(path
->source
, power
,
1289 case snd_soc_dapm_supply
:
1290 /* Supplies can't affect their outputs, only their inputs */
1293 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1295 dapm_widget_set_peer_power(path
->sink
, power
,
1303 dapm_seq_insert(w
, up_list
, true);
1305 dapm_seq_insert(w
, down_list
, false);
1310 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1311 struct list_head
*up_list
,
1312 struct list_head
*down_list
)
1317 case snd_soc_dapm_pre
:
1318 dapm_seq_insert(w
, down_list
, false);
1320 case snd_soc_dapm_post
:
1321 dapm_seq_insert(w
, up_list
, true);
1325 power
= dapm_widget_power_check(w
);
1327 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1333 * Scan each dapm widget for complete audio path.
1334 * A complete path is a route that has valid endpoints i.e.:-
1336 * o DAC to output pin.
1337 * o Input Pin to ADC.
1338 * o Input pin to Output pin (bypass, sidetone)
1339 * o DAC to ADC (loopback).
1341 static int dapm_power_widgets(struct snd_soc_dapm_context
*dapm
, int event
)
1343 struct snd_soc_card
*card
= dapm
->card
;
1344 struct snd_soc_dapm_widget
*w
;
1345 struct snd_soc_dapm_context
*d
;
1347 LIST_HEAD(down_list
);
1348 LIST_HEAD(async_domain
);
1349 enum snd_soc_bias_level bias
;
1351 trace_snd_soc_dapm_start(card
);
1353 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1354 if (d
->n_widgets
|| d
->codec
== NULL
) {
1355 if (d
->idle_bias_off
)
1356 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1358 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1362 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
1364 list_for_each_entry(w
, &card
->widgets
, list
) {
1365 w
->power_checked
= false;
1370 /* Check which widgets we need to power and store them in
1371 * lists indicating if they should be powered up or down. We
1372 * only check widgets that have been flagged as dirty but note
1373 * that new widgets may be added to the dirty list while we
1376 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1377 dapm_power_one_widget(w
, &up_list
, &down_list
);
1380 list_for_each_entry(w
, &card
->widgets
, list
) {
1381 list_del_init(&w
->dirty
);
1386 /* Supplies and micbiases only bring the
1387 * context up to STANDBY as unless something
1388 * else is active and passing audio they
1389 * generally don't require full power.
1392 case snd_soc_dapm_supply
:
1393 case snd_soc_dapm_micbias
:
1394 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1395 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1398 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1405 /* If there are no DAPM widgets then try to figure out power from the
1408 if (!dapm
->n_widgets
) {
1410 case SND_SOC_DAPM_STREAM_START
:
1411 case SND_SOC_DAPM_STREAM_RESUME
:
1412 dapm
->target_bias_level
= SND_SOC_BIAS_ON
;
1414 case SND_SOC_DAPM_STREAM_STOP
:
1415 if (dapm
->codec
->active
)
1416 dapm
->target_bias_level
= SND_SOC_BIAS_ON
;
1418 dapm
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1420 case SND_SOC_DAPM_STREAM_SUSPEND
:
1421 dapm
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1423 case SND_SOC_DAPM_STREAM_NOP
:
1424 dapm
->target_bias_level
= dapm
->bias_level
;
1431 /* Force all contexts in the card to the same bias state if
1432 * they're not ground referenced.
1434 bias
= SND_SOC_BIAS_OFF
;
1435 list_for_each_entry(d
, &card
->dapm_list
, list
)
1436 if (d
->target_bias_level
> bias
)
1437 bias
= d
->target_bias_level
;
1438 list_for_each_entry(d
, &card
->dapm_list
, list
)
1439 if (!d
->idle_bias_off
)
1440 d
->target_bias_level
= bias
;
1442 trace_snd_soc_dapm_walk_done(card
);
1444 /* Run all the bias changes in parallel */
1445 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1446 async_schedule_domain(dapm_pre_sequence_async
, d
,
1448 async_synchronize_full_domain(&async_domain
);
1450 /* Power down widgets first; try to avoid amplifying pops. */
1451 dapm_seq_run(dapm
, &down_list
, event
, false);
1453 dapm_widget_update(dapm
);
1456 dapm_seq_run(dapm
, &up_list
, event
, true);
1458 /* Run all the bias changes in parallel */
1459 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1460 async_schedule_domain(dapm_post_sequence_async
, d
,
1462 async_synchronize_full_domain(&async_domain
);
1464 pop_dbg(dapm
->dev
, card
->pop_time
,
1465 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1466 pop_wait(card
->pop_time
);
1468 trace_snd_soc_dapm_done(card
);
1473 #ifdef CONFIG_DEBUG_FS
1474 static int dapm_widget_power_open_file(struct inode
*inode
, struct file
*file
)
1476 file
->private_data
= inode
->i_private
;
1480 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1481 char __user
*user_buf
,
1482 size_t count
, loff_t
*ppos
)
1484 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1488 struct snd_soc_dapm_path
*p
= NULL
;
1490 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1494 in
= is_connected_input_ep(w
);
1495 dapm_clear_walk(w
->dapm
);
1496 out
= is_connected_output_ep(w
);
1497 dapm_clear_walk(w
->dapm
);
1499 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s in %d out %d",
1500 w
->name
, w
->power
? "On" : "Off", in
, out
);
1503 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1504 " - R%d(0x%x) bit %d",
1505 w
->reg
, w
->reg
, w
->shift
);
1507 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1510 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1512 w
->active
? "active" : "inactive");
1514 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1515 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1519 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1520 " in \"%s\" \"%s\"\n",
1521 p
->name
? p
->name
: "static",
1524 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1525 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1529 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1530 " out \"%s\" \"%s\"\n",
1531 p
->name
? p
->name
: "static",
1535 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1541 static const struct file_operations dapm_widget_power_fops
= {
1542 .open
= dapm_widget_power_open_file
,
1543 .read
= dapm_widget_power_read_file
,
1544 .llseek
= default_llseek
,
1547 static int dapm_bias_open_file(struct inode
*inode
, struct file
*file
)
1549 file
->private_data
= inode
->i_private
;
1553 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1554 size_t count
, loff_t
*ppos
)
1556 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1559 switch (dapm
->bias_level
) {
1560 case SND_SOC_BIAS_ON
:
1563 case SND_SOC_BIAS_PREPARE
:
1564 level
= "Prepare\n";
1566 case SND_SOC_BIAS_STANDBY
:
1567 level
= "Standby\n";
1569 case SND_SOC_BIAS_OFF
:
1574 level
= "Unknown\n";
1578 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1582 static const struct file_operations dapm_bias_fops
= {
1583 .open
= dapm_bias_open_file
,
1584 .read
= dapm_bias_read_file
,
1585 .llseek
= default_llseek
,
1588 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1589 struct dentry
*parent
)
1593 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
1595 if (!dapm
->debugfs_dapm
) {
1597 "Failed to create DAPM debugfs directory\n");
1601 d
= debugfs_create_file("bias_level", 0444,
1602 dapm
->debugfs_dapm
, dapm
,
1606 "ASoC: Failed to create bias level debugfs file\n");
1609 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1611 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1614 if (!dapm
->debugfs_dapm
|| !w
->name
)
1617 d
= debugfs_create_file(w
->name
, 0444,
1618 dapm
->debugfs_dapm
, w
,
1619 &dapm_widget_power_fops
);
1621 dev_warn(w
->dapm
->dev
,
1622 "ASoC: Failed to create %s debugfs file\n",
1626 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1628 debugfs_remove_recursive(dapm
->debugfs_dapm
);
1632 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1633 struct dentry
*parent
)
1637 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1641 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1647 /* test and update the power status of a mux widget */
1648 static int dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1649 struct snd_kcontrol
*kcontrol
, int change
,
1650 int mux
, struct soc_enum
*e
)
1652 struct snd_soc_dapm_path
*path
;
1655 if (widget
->id
!= snd_soc_dapm_mux
&&
1656 widget
->id
!= snd_soc_dapm_virt_mux
&&
1657 widget
->id
!= snd_soc_dapm_value_mux
)
1663 /* find dapm widget path assoc with kcontrol */
1664 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1665 if (path
->kcontrol
!= kcontrol
)
1668 if (!path
->name
|| !e
->texts
[mux
])
1672 /* we now need to match the string in the enum to the path */
1673 if (!(strcmp(path
->name
, e
->texts
[mux
]))) {
1674 path
->connect
= 1; /* new connection */
1675 dapm_mark_dirty(path
->source
, "mux connection");
1678 dapm_mark_dirty(path
->source
,
1679 "mux disconnection");
1680 path
->connect
= 0; /* old connection must be powered down */
1685 dapm_mark_dirty(widget
, "mux change");
1686 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1692 /* test and update the power status of a mixer or switch widget */
1693 static int dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1694 struct snd_kcontrol
*kcontrol
, int connect
)
1696 struct snd_soc_dapm_path
*path
;
1699 if (widget
->id
!= snd_soc_dapm_mixer
&&
1700 widget
->id
!= snd_soc_dapm_mixer_named_ctl
&&
1701 widget
->id
!= snd_soc_dapm_switch
)
1704 /* find dapm widget path assoc with kcontrol */
1705 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1706 if (path
->kcontrol
!= kcontrol
)
1709 /* found, now check type */
1711 path
->connect
= connect
;
1712 dapm_mark_dirty(path
->source
, "mixer connection");
1716 dapm_mark_dirty(widget
, "mixer update");
1717 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1723 /* show dapm widget status in sys fs */
1724 static ssize_t
dapm_widget_show(struct device
*dev
,
1725 struct device_attribute
*attr
, char *buf
)
1727 struct snd_soc_pcm_runtime
*rtd
=
1728 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
1729 struct snd_soc_codec
*codec
=rtd
->codec
;
1730 struct snd_soc_dapm_widget
*w
;
1732 char *state
= "not set";
1734 list_for_each_entry(w
, &codec
->card
->widgets
, list
) {
1735 if (w
->dapm
!= &codec
->dapm
)
1738 /* only display widgets that burnm power */
1740 case snd_soc_dapm_hp
:
1741 case snd_soc_dapm_mic
:
1742 case snd_soc_dapm_spk
:
1743 case snd_soc_dapm_line
:
1744 case snd_soc_dapm_micbias
:
1745 case snd_soc_dapm_dac
:
1746 case snd_soc_dapm_adc
:
1747 case snd_soc_dapm_pga
:
1748 case snd_soc_dapm_out_drv
:
1749 case snd_soc_dapm_mixer
:
1750 case snd_soc_dapm_mixer_named_ctl
:
1751 case snd_soc_dapm_supply
:
1753 count
+= sprintf(buf
+ count
, "%s: %s\n",
1754 w
->name
, w
->power
? "On":"Off");
1761 switch (codec
->dapm
.bias_level
) {
1762 case SND_SOC_BIAS_ON
:
1765 case SND_SOC_BIAS_PREPARE
:
1768 case SND_SOC_BIAS_STANDBY
:
1771 case SND_SOC_BIAS_OFF
:
1775 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
1780 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
1782 int snd_soc_dapm_sys_add(struct device
*dev
)
1784 return device_create_file(dev
, &dev_attr_dapm_widget
);
1787 static void snd_soc_dapm_sys_remove(struct device
*dev
)
1789 device_remove_file(dev
, &dev_attr_dapm_widget
);
1792 /* free all dapm widgets and resources */
1793 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
1795 struct snd_soc_dapm_widget
*w
, *next_w
;
1796 struct snd_soc_dapm_path
*p
, *next_p
;
1798 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
1799 if (w
->dapm
!= dapm
)
1803 * remove source and sink paths associated to this widget.
1804 * While removing the path, remove reference to it from both
1805 * source and sink widgets so that path is removed only once.
1807 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
) {
1808 list_del(&p
->list_sink
);
1809 list_del(&p
->list_source
);
1811 kfree(p
->long_name
);
1814 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
) {
1815 list_del(&p
->list_sink
);
1816 list_del(&p
->list_source
);
1818 kfree(p
->long_name
);
1821 kfree(w
->kcontrols
);
1827 static struct snd_soc_dapm_widget
*dapm_find_widget(
1828 struct snd_soc_dapm_context
*dapm
, const char *pin
,
1829 bool search_other_contexts
)
1831 struct snd_soc_dapm_widget
*w
;
1832 struct snd_soc_dapm_widget
*fallback
= NULL
;
1834 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
1835 if (!strcmp(w
->name
, pin
)) {
1836 if (w
->dapm
== dapm
)
1843 if (search_other_contexts
)
1849 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
1850 const char *pin
, int status
)
1852 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
1855 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
1859 w
->connected
= status
;
1862 dapm_mark_dirty(w
, "pin configuration");
1868 * snd_soc_dapm_sync - scan and power dapm paths
1869 * @dapm: DAPM context
1871 * Walks all dapm audio paths and powers widgets according to their
1872 * stream or path usage.
1874 * Returns 0 for success.
1876 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
1879 * Suppress early reports (eg, jacks syncing their state) to avoid
1880 * silly DAPM runs during card startup.
1882 if (!dapm
->card
|| !dapm
->card
->instantiated
)
1885 return dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
1887 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
1889 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
1890 const struct snd_soc_dapm_route
*route
)
1892 struct snd_soc_dapm_path
*path
;
1893 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
1894 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
1896 const char *control
= route
->control
;
1898 char prefixed_sink
[80];
1899 char prefixed_source
[80];
1902 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
1903 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
1904 dapm
->codec
->name_prefix
, route
->sink
);
1905 sink
= prefixed_sink
;
1906 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
1907 dapm
->codec
->name_prefix
, route
->source
);
1908 source
= prefixed_source
;
1911 source
= route
->source
;
1915 * find src and dest widgets over all widgets but favor a widget from
1916 * current DAPM context
1918 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
1919 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
1921 if (w
->dapm
== dapm
)
1925 if (!wsource
&& !(strcmp(w
->name
, source
))) {
1927 if (w
->dapm
== dapm
)
1931 /* use widget from another DAPM context if not found from this */
1937 if (wsource
== NULL
|| wsink
== NULL
)
1940 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
1944 path
->source
= wsource
;
1946 path
->connected
= route
->connected
;
1947 INIT_LIST_HEAD(&path
->list
);
1948 INIT_LIST_HEAD(&path
->list_source
);
1949 INIT_LIST_HEAD(&path
->list_sink
);
1951 /* check for external widgets */
1952 if (wsink
->id
== snd_soc_dapm_input
) {
1953 if (wsource
->id
== snd_soc_dapm_micbias
||
1954 wsource
->id
== snd_soc_dapm_mic
||
1955 wsource
->id
== snd_soc_dapm_line
||
1956 wsource
->id
== snd_soc_dapm_output
)
1959 if (wsource
->id
== snd_soc_dapm_output
) {
1960 if (wsink
->id
== snd_soc_dapm_spk
||
1961 wsink
->id
== snd_soc_dapm_hp
||
1962 wsink
->id
== snd_soc_dapm_line
||
1963 wsink
->id
== snd_soc_dapm_input
)
1967 /* connect static paths */
1968 if (control
== NULL
) {
1969 list_add(&path
->list
, &dapm
->card
->paths
);
1970 list_add(&path
->list_sink
, &wsink
->sources
);
1971 list_add(&path
->list_source
, &wsource
->sinks
);
1976 /* connect dynamic paths */
1977 switch (wsink
->id
) {
1978 case snd_soc_dapm_adc
:
1979 case snd_soc_dapm_dac
:
1980 case snd_soc_dapm_pga
:
1981 case snd_soc_dapm_out_drv
:
1982 case snd_soc_dapm_input
:
1983 case snd_soc_dapm_output
:
1984 case snd_soc_dapm_micbias
:
1985 case snd_soc_dapm_vmid
:
1986 case snd_soc_dapm_pre
:
1987 case snd_soc_dapm_post
:
1988 case snd_soc_dapm_supply
:
1989 case snd_soc_dapm_aif_in
:
1990 case snd_soc_dapm_aif_out
:
1991 list_add(&path
->list
, &dapm
->card
->paths
);
1992 list_add(&path
->list_sink
, &wsink
->sources
);
1993 list_add(&path
->list_source
, &wsource
->sinks
);
1996 case snd_soc_dapm_mux
:
1997 case snd_soc_dapm_virt_mux
:
1998 case snd_soc_dapm_value_mux
:
1999 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
2000 &wsink
->kcontrol_news
[0]);
2004 case snd_soc_dapm_switch
:
2005 case snd_soc_dapm_mixer
:
2006 case snd_soc_dapm_mixer_named_ctl
:
2007 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
2011 case snd_soc_dapm_hp
:
2012 case snd_soc_dapm_mic
:
2013 case snd_soc_dapm_line
:
2014 case snd_soc_dapm_spk
:
2015 list_add(&path
->list
, &dapm
->card
->paths
);
2016 list_add(&path
->list_sink
, &wsink
->sources
);
2017 list_add(&path
->list_source
, &wsource
->sinks
);
2024 dev_warn(dapm
->dev
, "asoc: no dapm match for %s --> %s --> %s\n",
2025 source
, control
, sink
);
2031 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2032 * @dapm: DAPM context
2033 * @route: audio routes
2034 * @num: number of routes
2036 * Connects 2 dapm widgets together via a named audio path. The sink is
2037 * the widget receiving the audio signal, whilst the source is the sender
2038 * of the audio signal.
2040 * Returns 0 for success else error. On error all resources can be freed
2041 * with a call to snd_soc_card_free().
2043 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2044 const struct snd_soc_dapm_route
*route
, int num
)
2048 for (i
= 0; i
< num
; i
++) {
2049 ret
= snd_soc_dapm_add_route(dapm
, route
);
2051 dev_err(dapm
->dev
, "Failed to add route %s->%s\n",
2052 route
->source
, route
->sink
);
2060 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2062 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2063 const struct snd_soc_dapm_route
*route
)
2065 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2068 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2071 struct snd_soc_dapm_path
*path
;
2075 dev_err(dapm
->dev
, "Unable to find source %s for weak route\n",
2081 dev_err(dapm
->dev
, "Unable to find sink %s for weak route\n",
2086 if (route
->control
|| route
->connected
)
2087 dev_warn(dapm
->dev
, "Ignoring control for weak route %s->%s\n",
2088 route
->source
, route
->sink
);
2090 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2091 if (path
->sink
== sink
) {
2098 dev_err(dapm
->dev
, "No path found for weak route %s->%s\n",
2099 route
->source
, route
->sink
);
2101 dev_warn(dapm
->dev
, "%d paths found for weak route %s->%s\n",
2102 count
, route
->source
, route
->sink
);
2108 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2109 * @dapm: DAPM context
2110 * @route: audio routes
2111 * @num: number of routes
2113 * Mark existing routes matching those specified in the passed array
2114 * as being weak, meaning that they are ignored for the purpose of
2115 * power decisions. The main intended use case is for sidetone paths
2116 * which couple audio between other independent paths if they are both
2117 * active in order to make the combination work better at the user
2118 * level but which aren't intended to be "used".
2120 * Note that CODEC drivers should not use this as sidetone type paths
2121 * can frequently also be used as bypass paths.
2123 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2124 const struct snd_soc_dapm_route
*route
, int num
)
2129 for (i
= 0; i
< num
; i
++) {
2130 err
= snd_soc_dapm_weak_route(dapm
, route
);
2138 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2141 * snd_soc_dapm_new_widgets - add new dapm widgets
2142 * @dapm: DAPM context
2144 * Checks the codec for any new dapm widgets and creates them if found.
2146 * Returns 0 for success.
2148 int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context
*dapm
)
2150 struct snd_soc_dapm_widget
*w
;
2153 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2158 if (w
->num_kcontrols
) {
2159 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2160 sizeof(struct snd_kcontrol
*),
2167 case snd_soc_dapm_switch
:
2168 case snd_soc_dapm_mixer
:
2169 case snd_soc_dapm_mixer_named_ctl
:
2172 case snd_soc_dapm_mux
:
2173 case snd_soc_dapm_virt_mux
:
2174 case snd_soc_dapm_value_mux
:
2177 case snd_soc_dapm_pga
:
2178 case snd_soc_dapm_out_drv
:
2185 /* Read the initial power state from the device */
2187 val
= soc_widget_read(w
, w
->reg
);
2188 val
&= 1 << w
->shift
;
2198 dapm_mark_dirty(w
, "new widget");
2199 dapm_debugfs_add_widget(w
);
2202 dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2205 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2208 * snd_soc_dapm_get_volsw - dapm mixer get callback
2209 * @kcontrol: mixer control
2210 * @ucontrol: control element information
2212 * Callback to get the value of a dapm mixer control.
2214 * Returns 0 for success.
2216 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2217 struct snd_ctl_elem_value
*ucontrol
)
2219 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2220 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2221 struct soc_mixer_control
*mc
=
2222 (struct soc_mixer_control
*)kcontrol
->private_value
;
2223 unsigned int reg
= mc
->reg
;
2224 unsigned int shift
= mc
->shift
;
2225 unsigned int rshift
= mc
->rshift
;
2227 unsigned int invert
= mc
->invert
;
2228 unsigned int mask
= (1 << fls(max
)) - 1;
2230 ucontrol
->value
.integer
.value
[0] =
2231 (snd_soc_read(widget
->codec
, reg
) >> shift
) & mask
;
2232 if (shift
!= rshift
)
2233 ucontrol
->value
.integer
.value
[1] =
2234 (snd_soc_read(widget
->codec
, reg
) >> rshift
) & mask
;
2236 ucontrol
->value
.integer
.value
[0] =
2237 max
- ucontrol
->value
.integer
.value
[0];
2238 if (shift
!= rshift
)
2239 ucontrol
->value
.integer
.value
[1] =
2240 max
- ucontrol
->value
.integer
.value
[1];
2245 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2248 * snd_soc_dapm_put_volsw - dapm mixer set callback
2249 * @kcontrol: mixer control
2250 * @ucontrol: control element information
2252 * Callback to set the value of a dapm mixer control.
2254 * Returns 0 for success.
2256 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
2257 struct snd_ctl_elem_value
*ucontrol
)
2259 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2260 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2261 struct snd_soc_codec
*codec
= widget
->codec
;
2262 struct soc_mixer_control
*mc
=
2263 (struct soc_mixer_control
*)kcontrol
->private_value
;
2264 unsigned int reg
= mc
->reg
;
2265 unsigned int shift
= mc
->shift
;
2267 unsigned int mask
= (1 << fls(max
)) - 1;
2268 unsigned int invert
= mc
->invert
;
2270 int connect
, change
;
2271 struct snd_soc_dapm_update update
;
2274 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2278 mask
= mask
<< shift
;
2282 /* new connection */
2283 connect
= invert
? 0 : 1;
2285 /* old connection must be powered down */
2286 connect
= invert
? 1 : 0;
2288 mutex_lock(&codec
->mutex
);
2290 change
= snd_soc_test_bits(widget
->codec
, reg
, mask
, val
);
2292 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2293 widget
= wlist
->widgets
[wi
];
2295 widget
->value
= val
;
2297 update
.kcontrol
= kcontrol
;
2298 update
.widget
= widget
;
2302 widget
->dapm
->update
= &update
;
2304 dapm_mixer_update_power(widget
, kcontrol
, connect
);
2306 widget
->dapm
->update
= NULL
;
2310 mutex_unlock(&codec
->mutex
);
2313 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
2316 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2317 * @kcontrol: mixer control
2318 * @ucontrol: control element information
2320 * Callback to get the value of a dapm enumerated double mixer control.
2322 * Returns 0 for success.
2324 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2325 struct snd_ctl_elem_value
*ucontrol
)
2327 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2328 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2329 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2330 unsigned int val
, bitmask
;
2332 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2334 val
= snd_soc_read(widget
->codec
, e
->reg
);
2335 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & (bitmask
- 1);
2336 if (e
->shift_l
!= e
->shift_r
)
2337 ucontrol
->value
.enumerated
.item
[1] =
2338 (val
>> e
->shift_r
) & (bitmask
- 1);
2342 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2345 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2346 * @kcontrol: mixer control
2347 * @ucontrol: control element information
2349 * Callback to set the value of a dapm enumerated double mixer control.
2351 * Returns 0 for success.
2353 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2354 struct snd_ctl_elem_value
*ucontrol
)
2356 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2357 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2358 struct snd_soc_codec
*codec
= widget
->codec
;
2359 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2360 unsigned int val
, mux
, change
;
2361 unsigned int mask
, bitmask
;
2362 struct snd_soc_dapm_update update
;
2365 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2367 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2369 mux
= ucontrol
->value
.enumerated
.item
[0];
2370 val
= mux
<< e
->shift_l
;
2371 mask
= (bitmask
- 1) << e
->shift_l
;
2372 if (e
->shift_l
!= e
->shift_r
) {
2373 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2375 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2376 mask
|= (bitmask
- 1) << e
->shift_r
;
2379 mutex_lock(&codec
->mutex
);
2381 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2383 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2384 widget
= wlist
->widgets
[wi
];
2386 widget
->value
= val
;
2388 update
.kcontrol
= kcontrol
;
2389 update
.widget
= widget
;
2390 update
.reg
= e
->reg
;
2393 widget
->dapm
->update
= &update
;
2395 dapm_mux_update_power(widget
, kcontrol
, change
, mux
, e
);
2397 widget
->dapm
->update
= NULL
;
2401 mutex_unlock(&codec
->mutex
);
2404 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2407 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2408 * @kcontrol: mixer control
2409 * @ucontrol: control element information
2411 * Returns 0 for success.
2413 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
2414 struct snd_ctl_elem_value
*ucontrol
)
2416 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2417 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2419 ucontrol
->value
.enumerated
.item
[0] = widget
->value
;
2423 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
2426 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2427 * @kcontrol: mixer control
2428 * @ucontrol: control element information
2430 * Returns 0 for success.
2432 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
2433 struct snd_ctl_elem_value
*ucontrol
)
2435 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2436 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2437 struct snd_soc_codec
*codec
= widget
->codec
;
2438 struct soc_enum
*e
=
2439 (struct soc_enum
*)kcontrol
->private_value
;
2444 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
2447 mutex_lock(&codec
->mutex
);
2449 change
= widget
->value
!= ucontrol
->value
.enumerated
.item
[0];
2451 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2452 widget
= wlist
->widgets
[wi
];
2454 widget
->value
= ucontrol
->value
.enumerated
.item
[0];
2456 dapm_mux_update_power(widget
, kcontrol
, change
,
2461 mutex_unlock(&codec
->mutex
);
2464 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
2467 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2469 * @kcontrol: mixer control
2470 * @ucontrol: control element information
2472 * Callback to get the value of a dapm semi enumerated double mixer control.
2474 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2475 * used for handling bitfield coded enumeration for example.
2477 * Returns 0 for success.
2479 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2480 struct snd_ctl_elem_value
*ucontrol
)
2482 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2483 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2484 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2485 unsigned int reg_val
, val
, mux
;
2487 reg_val
= snd_soc_read(widget
->codec
, e
->reg
);
2488 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2489 for (mux
= 0; mux
< e
->max
; mux
++) {
2490 if (val
== e
->values
[mux
])
2493 ucontrol
->value
.enumerated
.item
[0] = mux
;
2494 if (e
->shift_l
!= e
->shift_r
) {
2495 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2496 for (mux
= 0; mux
< e
->max
; mux
++) {
2497 if (val
== e
->values
[mux
])
2500 ucontrol
->value
.enumerated
.item
[1] = mux
;
2505 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
2508 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2510 * @kcontrol: mixer control
2511 * @ucontrol: control element information
2513 * Callback to set the value of a dapm semi enumerated double mixer control.
2515 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2516 * used for handling bitfield coded enumeration for example.
2518 * Returns 0 for success.
2520 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2521 struct snd_ctl_elem_value
*ucontrol
)
2523 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2524 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2525 struct snd_soc_codec
*codec
= widget
->codec
;
2526 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2527 unsigned int val
, mux
, change
;
2529 struct snd_soc_dapm_update update
;
2532 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2534 mux
= ucontrol
->value
.enumerated
.item
[0];
2535 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2536 mask
= e
->mask
<< e
->shift_l
;
2537 if (e
->shift_l
!= e
->shift_r
) {
2538 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2540 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2541 mask
|= e
->mask
<< e
->shift_r
;
2544 mutex_lock(&codec
->mutex
);
2546 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2548 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2549 widget
= wlist
->widgets
[wi
];
2551 widget
->value
= val
;
2553 update
.kcontrol
= kcontrol
;
2554 update
.widget
= widget
;
2555 update
.reg
= e
->reg
;
2558 widget
->dapm
->update
= &update
;
2560 dapm_mux_update_power(widget
, kcontrol
, change
, mux
, e
);
2562 widget
->dapm
->update
= NULL
;
2566 mutex_unlock(&codec
->mutex
);
2569 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
2572 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2574 * @kcontrol: mixer control
2575 * @uinfo: control element information
2577 * Callback to provide information about a pin switch control.
2579 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
2580 struct snd_ctl_elem_info
*uinfo
)
2582 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2584 uinfo
->value
.integer
.min
= 0;
2585 uinfo
->value
.integer
.max
= 1;
2589 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
2592 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2594 * @kcontrol: mixer control
2597 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
2598 struct snd_ctl_elem_value
*ucontrol
)
2600 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2601 const char *pin
= (const char *)kcontrol
->private_value
;
2603 mutex_lock(&codec
->mutex
);
2605 ucontrol
->value
.integer
.value
[0] =
2606 snd_soc_dapm_get_pin_status(&codec
->dapm
, pin
);
2608 mutex_unlock(&codec
->mutex
);
2612 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
2615 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
2617 * @kcontrol: mixer control
2620 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
2621 struct snd_ctl_elem_value
*ucontrol
)
2623 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2624 const char *pin
= (const char *)kcontrol
->private_value
;
2626 mutex_lock(&codec
->mutex
);
2628 if (ucontrol
->value
.integer
.value
[0])
2629 snd_soc_dapm_enable_pin(&codec
->dapm
, pin
);
2631 snd_soc_dapm_disable_pin(&codec
->dapm
, pin
);
2633 snd_soc_dapm_sync(&codec
->dapm
);
2635 mutex_unlock(&codec
->mutex
);
2639 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
2642 * snd_soc_dapm_new_control - create new dapm control
2643 * @dapm: DAPM context
2644 * @widget: widget template
2646 * Creates a new dapm control based upon the template.
2648 * Returns 0 for success else error.
2650 int snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
2651 const struct snd_soc_dapm_widget
*widget
)
2653 struct snd_soc_dapm_widget
*w
;
2656 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
2659 name_len
= strlen(widget
->name
) + 1;
2660 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
2661 name_len
+= 1 + strlen(dapm
->codec
->name_prefix
);
2662 w
->name
= kmalloc(name_len
, GFP_KERNEL
);
2663 if (w
->name
== NULL
) {
2667 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
2668 snprintf(w
->name
, name_len
, "%s %s",
2669 dapm
->codec
->name_prefix
, widget
->name
);
2671 snprintf(w
->name
, name_len
, "%s", widget
->name
);
2674 case snd_soc_dapm_switch
:
2675 case snd_soc_dapm_mixer
:
2676 case snd_soc_dapm_mixer_named_ctl
:
2677 w
->power_check
= dapm_generic_check_power
;
2679 case snd_soc_dapm_mux
:
2680 case snd_soc_dapm_virt_mux
:
2681 case snd_soc_dapm_value_mux
:
2682 w
->power_check
= dapm_generic_check_power
;
2684 case snd_soc_dapm_adc
:
2685 case snd_soc_dapm_aif_out
:
2686 w
->power_check
= dapm_adc_check_power
;
2688 case snd_soc_dapm_dac
:
2689 case snd_soc_dapm_aif_in
:
2690 w
->power_check
= dapm_dac_check_power
;
2692 case snd_soc_dapm_pga
:
2693 case snd_soc_dapm_out_drv
:
2694 case snd_soc_dapm_input
:
2695 case snd_soc_dapm_output
:
2696 case snd_soc_dapm_micbias
:
2697 case snd_soc_dapm_spk
:
2698 case snd_soc_dapm_hp
:
2699 case snd_soc_dapm_mic
:
2700 case snd_soc_dapm_line
:
2701 w
->power_check
= dapm_generic_check_power
;
2703 case snd_soc_dapm_supply
:
2704 w
->power_check
= dapm_supply_check_power
;
2707 w
->power_check
= dapm_always_on_check_power
;
2713 w
->codec
= dapm
->codec
;
2714 w
->platform
= dapm
->platform
;
2715 INIT_LIST_HEAD(&w
->sources
);
2716 INIT_LIST_HEAD(&w
->sinks
);
2717 INIT_LIST_HEAD(&w
->list
);
2718 INIT_LIST_HEAD(&w
->dirty
);
2719 list_add(&w
->list
, &dapm
->card
->widgets
);
2721 /* machine layer set ups unconnected pins and insertions */
2725 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control
);
2728 * snd_soc_dapm_new_controls - create new dapm controls
2729 * @dapm: DAPM context
2730 * @widget: widget array
2731 * @num: number of widgets
2733 * Creates new DAPM controls based upon the templates.
2735 * Returns 0 for success else error.
2737 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
2738 const struct snd_soc_dapm_widget
*widget
,
2743 for (i
= 0; i
< num
; i
++) {
2744 ret
= snd_soc_dapm_new_control(dapm
, widget
);
2747 "ASoC: Failed to create DAPM control %s: %d\n",
2755 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
2757 static void soc_dapm_stream_event(struct snd_soc_dapm_context
*dapm
,
2758 const char *stream
, int event
)
2760 struct snd_soc_dapm_widget
*w
;
2762 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2764 if (!w
->sname
|| w
->dapm
!= dapm
)
2766 dev_vdbg(w
->dapm
->dev
, "widget %s\n %s stream %s event %d\n",
2767 w
->name
, w
->sname
, stream
, event
);
2768 if (strstr(w
->sname
, stream
)) {
2769 dapm_mark_dirty(w
, "stream event");
2771 case SND_SOC_DAPM_STREAM_START
:
2774 case SND_SOC_DAPM_STREAM_STOP
:
2777 case SND_SOC_DAPM_STREAM_SUSPEND
:
2778 case SND_SOC_DAPM_STREAM_RESUME
:
2779 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
2780 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
2786 dapm_power_widgets(dapm
, event
);
2788 /* do we need to notify any clients that DAPM stream is complete */
2789 if (dapm
->stream_event
)
2790 dapm
->stream_event(dapm
, event
);
2794 * snd_soc_dapm_stream_event - send a stream event to the dapm core
2795 * @rtd: PCM runtime data
2796 * @stream: stream name
2797 * @event: stream event
2799 * Sends a stream event to the dapm core. The core then makes any
2800 * necessary widget power changes.
2802 * Returns 0 for success else error.
2804 int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
,
2805 const char *stream
, int event
)
2807 struct snd_soc_codec
*codec
= rtd
->codec
;
2812 mutex_lock(&codec
->mutex
);
2813 soc_dapm_stream_event(&codec
->dapm
, stream
, event
);
2814 mutex_unlock(&codec
->mutex
);
2819 * snd_soc_dapm_enable_pin - enable pin.
2820 * @dapm: DAPM context
2823 * Enables input/output pin and its parents or children widgets iff there is
2824 * a valid audio route and active audio stream.
2825 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2826 * do any widget power switching.
2828 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
2830 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
2832 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
2835 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
2836 * @dapm: DAPM context
2839 * Enables input/output pin regardless of any other state. This is
2840 * intended for use with microphone bias supplies used in microphone
2843 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2844 * do any widget power switching.
2846 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
2849 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2852 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
2856 dev_dbg(w
->dapm
->dev
, "dapm: force enable pin %s\n", pin
);
2859 dapm_mark_dirty(w
, "force enable");
2863 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
2866 * snd_soc_dapm_disable_pin - disable pin.
2867 * @dapm: DAPM context
2870 * Disables input/output pin and its parents or children widgets.
2871 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2872 * do any widget power switching.
2874 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
2877 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
2879 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
2882 * snd_soc_dapm_nc_pin - permanently disable pin.
2883 * @dapm: DAPM context
2886 * Marks the specified pin as being not connected, disabling it along
2887 * any parent or child widgets. At present this is identical to
2888 * snd_soc_dapm_disable_pin() but in future it will be extended to do
2889 * additional things such as disabling controls which only affect
2890 * paths through the pin.
2892 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2893 * do any widget power switching.
2895 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
2897 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
2899 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
2902 * snd_soc_dapm_get_pin_status - get audio pin status
2903 * @dapm: DAPM context
2904 * @pin: audio signal pin endpoint (or start point)
2906 * Get audio pin status - connected or disconnected.
2908 * Returns 1 for connected otherwise 0.
2910 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
2913 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2916 return w
->connected
;
2920 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
2923 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
2924 * @dapm: DAPM context
2925 * @pin: audio signal pin endpoint (or start point)
2927 * Mark the given endpoint or pin as ignoring suspend. When the
2928 * system is disabled a path between two endpoints flagged as ignoring
2929 * suspend will not be disabled. The path must already be enabled via
2930 * normal means at suspend time, it will not be turned on if it was not
2933 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
2936 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
2939 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
2943 w
->ignore_suspend
= 1;
2947 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
2950 * snd_soc_dapm_free - free dapm resources
2951 * @dapm: DAPM context
2953 * Free all dapm widgets and resources.
2955 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
2957 snd_soc_dapm_sys_remove(dapm
->dev
);
2958 dapm_debugfs_cleanup(dapm
);
2959 dapm_free_widgets(dapm
);
2960 list_del(&dapm
->list
);
2962 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
2964 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context
*dapm
)
2966 struct snd_soc_dapm_widget
*w
;
2967 LIST_HEAD(down_list
);
2970 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2971 if (w
->dapm
!= dapm
)
2974 dapm_seq_insert(w
, &down_list
, false);
2980 /* If there were no widgets to power down we're already in
2984 snd_soc_dapm_set_bias_level(dapm
, SND_SOC_BIAS_PREPARE
);
2985 dapm_seq_run(dapm
, &down_list
, 0, false);
2986 snd_soc_dapm_set_bias_level(dapm
, SND_SOC_BIAS_STANDBY
);
2991 * snd_soc_dapm_shutdown - callback for system shutdown
2993 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
2995 struct snd_soc_codec
*codec
;
2997 list_for_each_entry(codec
, &card
->codec_dev_list
, list
) {
2998 soc_dapm_shutdown_codec(&codec
->dapm
);
2999 snd_soc_dapm_set_bias_level(&codec
->dapm
, SND_SOC_BIAS_OFF
);
3003 /* Module information */
3004 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3005 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3006 MODULE_LICENSE("GPL");