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 DAPM_UPDATE_STAT(widget
, path_checks
);
670 if (widget
->id
== snd_soc_dapm_supply
)
673 switch (widget
->id
) {
674 case snd_soc_dapm_adc
:
675 case snd_soc_dapm_aif_out
:
677 return snd_soc_dapm_suspend_check(widget
);
682 if (widget
->connected
) {
683 /* connected pin ? */
684 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
)
685 return snd_soc_dapm_suspend_check(widget
);
687 /* connected jack or spk ? */
688 if (widget
->id
== snd_soc_dapm_hp
|| widget
->id
== snd_soc_dapm_spk
||
689 (widget
->id
== snd_soc_dapm_line
&& !list_empty(&widget
->sources
)))
690 return snd_soc_dapm_suspend_check(widget
);
693 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
694 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
702 if (path
->sink
&& path
->connect
) {
704 con
+= is_connected_output_ep(path
->sink
);
712 * Recursively check for a completed path to an active or physically connected
713 * input widget. Returns number of complete paths.
715 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
)
717 struct snd_soc_dapm_path
*path
;
720 DAPM_UPDATE_STAT(widget
, path_checks
);
722 if (widget
->id
== snd_soc_dapm_supply
)
725 /* active stream ? */
726 switch (widget
->id
) {
727 case snd_soc_dapm_dac
:
728 case snd_soc_dapm_aif_in
:
730 return snd_soc_dapm_suspend_check(widget
);
735 if (widget
->connected
) {
736 /* connected pin ? */
737 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
)
738 return snd_soc_dapm_suspend_check(widget
);
740 /* connected VMID/Bias for lower pops */
741 if (widget
->id
== snd_soc_dapm_vmid
)
742 return snd_soc_dapm_suspend_check(widget
);
744 /* connected jack ? */
745 if (widget
->id
== snd_soc_dapm_mic
||
746 (widget
->id
== snd_soc_dapm_line
&& !list_empty(&widget
->sinks
)))
747 return snd_soc_dapm_suspend_check(widget
);
750 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
751 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
759 if (path
->source
&& path
->connect
) {
761 con
+= is_connected_input_ep(path
->source
);
769 * Handler for generic register modifier widget.
771 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
772 struct snd_kcontrol
*kcontrol
, int event
)
776 if (SND_SOC_DAPM_EVENT_ON(event
))
781 soc_widget_update_bits(w
, -(w
->reg
+ 1),
782 w
->mask
<< w
->shift
, val
<< w
->shift
);
786 EXPORT_SYMBOL_GPL(dapm_reg_event
);
788 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
793 return w
->power_check(w
);
796 /* Generic check to see if a widget should be powered.
798 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
802 DAPM_UPDATE_STAT(w
, power_checks
);
804 in
= is_connected_input_ep(w
);
805 dapm_clear_walk(w
->dapm
);
806 out
= is_connected_output_ep(w
);
807 dapm_clear_walk(w
->dapm
);
808 return out
!= 0 && in
!= 0;
811 /* Check to see if an ADC has power */
812 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
816 DAPM_UPDATE_STAT(w
, power_checks
);
819 in
= is_connected_input_ep(w
);
820 dapm_clear_walk(w
->dapm
);
823 return dapm_generic_check_power(w
);
827 /* Check to see if a DAC has power */
828 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
832 DAPM_UPDATE_STAT(w
, power_checks
);
835 out
= is_connected_output_ep(w
);
836 dapm_clear_walk(w
->dapm
);
839 return dapm_generic_check_power(w
);
843 /* Check to see if a power supply is needed */
844 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
846 struct snd_soc_dapm_path
*path
;
849 DAPM_UPDATE_STAT(w
, power_checks
);
851 /* Check if one of our outputs is connected */
852 list_for_each_entry(path
, &w
->sinks
, list_source
) {
853 DAPM_UPDATE_STAT(w
, neighbour_checks
);
858 if (path
->connected
&&
859 !path
->connected(path
->source
, path
->sink
))
865 if (dapm_widget_power_check(path
->sink
)) {
871 dapm_clear_walk(w
->dapm
);
876 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
881 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
882 struct snd_soc_dapm_widget
*b
,
890 sort
= dapm_down_seq
;
892 if (sort
[a
->id
] != sort
[b
->id
])
893 return sort
[a
->id
] - sort
[b
->id
];
894 if (a
->subseq
!= b
->subseq
) {
896 return a
->subseq
- b
->subseq
;
898 return b
->subseq
- a
->subseq
;
900 if (a
->reg
!= b
->reg
)
901 return a
->reg
- b
->reg
;
902 if (a
->dapm
!= b
->dapm
)
903 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
908 /* Insert a widget in order into a DAPM power sequence. */
909 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
910 struct list_head
*list
,
913 struct snd_soc_dapm_widget
*w
;
915 list_for_each_entry(w
, list
, power_list
)
916 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
917 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
921 list_add_tail(&new_widget
->power_list
, list
);
924 static void dapm_seq_check_event(struct snd_soc_dapm_context
*dapm
,
925 struct snd_soc_dapm_widget
*w
, int event
)
927 struct snd_soc_card
*card
= dapm
->card
;
932 case SND_SOC_DAPM_PRE_PMU
:
936 case SND_SOC_DAPM_POST_PMU
:
937 ev_name
= "POST_PMU";
940 case SND_SOC_DAPM_PRE_PMD
:
944 case SND_SOC_DAPM_POST_PMD
:
945 ev_name
= "POST_PMD";
953 if (w
->power
!= power
)
956 if (w
->event
&& (w
->event_flags
& event
)) {
957 pop_dbg(dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
959 trace_snd_soc_dapm_widget_event_start(w
, event
);
960 ret
= w
->event(w
, NULL
, event
);
961 trace_snd_soc_dapm_widget_event_done(w
, event
);
963 pr_err("%s: %s event failed: %d\n",
964 ev_name
, w
->name
, ret
);
968 /* Apply the coalesced changes from a DAPM sequence */
969 static void dapm_seq_run_coalesced(struct snd_soc_dapm_context
*dapm
,
970 struct list_head
*pending
)
972 struct snd_soc_card
*card
= dapm
->card
;
973 struct snd_soc_dapm_widget
*w
;
975 unsigned int value
= 0;
976 unsigned int mask
= 0;
977 unsigned int cur_mask
;
979 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
982 list_for_each_entry(w
, pending
, power_list
) {
983 cur_mask
= 1 << w
->shift
;
984 BUG_ON(reg
!= w
->reg
);
995 pop_dbg(dapm
->dev
, card
->pop_time
,
996 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
997 w
->name
, reg
, value
, mask
);
999 /* Check for events */
1000 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMU
);
1001 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMD
);
1005 /* Any widget will do, they should all be updating the
1008 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1011 pop_dbg(dapm
->dev
, card
->pop_time
,
1012 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1013 value
, mask
, reg
, card
->pop_time
);
1014 pop_wait(card
->pop_time
);
1015 soc_widget_update_bits(w
, reg
, mask
, value
);
1018 list_for_each_entry(w
, pending
, power_list
) {
1019 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMU
);
1020 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMD
);
1024 /* Apply a DAPM power sequence.
1026 * We walk over a pre-sorted list of widgets to apply power to. In
1027 * order to minimise the number of writes to the device required
1028 * multiple widgets will be updated in a single write where possible.
1029 * Currently anything that requires more than a single write is not
1032 static void dapm_seq_run(struct snd_soc_dapm_context
*dapm
,
1033 struct list_head
*list
, int event
, bool power_up
)
1035 struct snd_soc_dapm_widget
*w
, *n
;
1038 int cur_subseq
= -1;
1039 int cur_reg
= SND_SOC_NOPM
;
1040 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1047 sort
= dapm_down_seq
;
1049 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1052 /* Do we need to apply any queued changes? */
1053 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1054 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1055 if (!list_empty(&pending
))
1056 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1058 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1059 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1060 if (sort
[i
] == cur_sort
)
1061 cur_dapm
->seq_notifier(cur_dapm
,
1066 INIT_LIST_HEAD(&pending
);
1068 cur_subseq
= INT_MIN
;
1069 cur_reg
= SND_SOC_NOPM
;
1074 case snd_soc_dapm_pre
:
1076 list_for_each_entry_safe_continue(w
, n
, list
,
1079 if (event
== SND_SOC_DAPM_STREAM_START
)
1081 NULL
, SND_SOC_DAPM_PRE_PMU
);
1082 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1084 NULL
, SND_SOC_DAPM_PRE_PMD
);
1087 case snd_soc_dapm_post
:
1089 list_for_each_entry_safe_continue(w
, n
, list
,
1092 if (event
== SND_SOC_DAPM_STREAM_START
)
1094 NULL
, SND_SOC_DAPM_POST_PMU
);
1095 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1097 NULL
, SND_SOC_DAPM_POST_PMD
);
1101 /* Queue it up for application */
1102 cur_sort
= sort
[w
->id
];
1103 cur_subseq
= w
->subseq
;
1106 list_move(&w
->power_list
, &pending
);
1111 dev_err(w
->dapm
->dev
,
1112 "Failed to apply widget power: %d\n", ret
);
1115 if (!list_empty(&pending
))
1116 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1118 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1119 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1120 if (sort
[i
] == cur_sort
)
1121 cur_dapm
->seq_notifier(cur_dapm
,
1126 static void dapm_widget_update(struct snd_soc_dapm_context
*dapm
)
1128 struct snd_soc_dapm_update
*update
= dapm
->update
;
1129 struct snd_soc_dapm_widget
*w
;
1138 (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1139 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1141 pr_err("%s DAPM pre-event failed: %d\n",
1145 ret
= snd_soc_update_bits(w
->codec
, update
->reg
, update
->mask
,
1148 pr_err("%s DAPM update failed: %d\n", w
->name
, ret
);
1151 (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1152 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1154 pr_err("%s DAPM post-event failed: %d\n",
1159 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1160 * they're changing state.
1162 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1164 struct snd_soc_dapm_context
*d
= data
;
1167 /* If we're off and we're not supposed to be go into STANDBY */
1168 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1169 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1170 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1173 "Failed to turn on bias: %d\n", ret
);
1176 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1177 if (d
->bias_level
!= d
->target_bias_level
) {
1178 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1181 "Failed to prepare bias: %d\n", ret
);
1185 /* Async callback run prior to DAPM sequences - brings to their final
1188 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1190 struct snd_soc_dapm_context
*d
= data
;
1193 /* If we just powered the last thing off drop to standby bias */
1194 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1195 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1196 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1197 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1199 dev_err(d
->dev
, "Failed to apply standby bias: %d\n",
1203 /* If we're in standby and can support bias off then do that */
1204 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1205 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1206 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1208 dev_err(d
->dev
, "Failed to turn off bias: %d\n", ret
);
1211 /* If we just powered up then move to active bias */
1212 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1213 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1214 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1216 dev_err(d
->dev
, "Failed to apply active bias: %d\n",
1221 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1222 bool power
, bool connect
)
1224 /* If a connection is being made or broken then that update
1225 * will have marked the peer dirty, otherwise the widgets are
1226 * not connected and this update has no impact. */
1230 /* If the peer is already in the state we're moving to then we
1231 * won't have an impact on it. */
1232 if (power
!= peer
->power
)
1233 dapm_mark_dirty(peer
, "peer state change");
1236 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1237 struct list_head
*up_list
,
1238 struct list_head
*down_list
)
1240 struct snd_soc_dapm_path
*path
;
1242 if (w
->power
== power
)
1245 trace_snd_soc_dapm_widget_power(w
, power
);
1247 /* If we changed our power state perhaps our neigbours changed
1250 list_for_each_entry(path
, &w
->sources
, list_sink
) {
1252 dapm_widget_set_peer_power(path
->source
, power
,
1256 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1258 dapm_widget_set_peer_power(path
->sink
, power
,
1264 dapm_seq_insert(w
, up_list
, true);
1266 dapm_seq_insert(w
, down_list
, false);
1271 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1272 struct list_head
*up_list
,
1273 struct list_head
*down_list
)
1278 case snd_soc_dapm_pre
:
1279 dapm_seq_insert(w
, down_list
, false);
1281 case snd_soc_dapm_post
:
1282 dapm_seq_insert(w
, up_list
, true);
1286 power
= dapm_widget_power_check(w
);
1288 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1294 * Scan each dapm widget for complete audio path.
1295 * A complete path is a route that has valid endpoints i.e.:-
1297 * o DAC to output pin.
1298 * o Input Pin to ADC.
1299 * o Input pin to Output pin (bypass, sidetone)
1300 * o DAC to ADC (loopback).
1302 static int dapm_power_widgets(struct snd_soc_dapm_context
*dapm
, int event
)
1304 struct snd_soc_card
*card
= dapm
->card
;
1305 struct snd_soc_dapm_widget
*w
;
1306 struct snd_soc_dapm_context
*d
;
1308 LIST_HEAD(down_list
);
1309 LIST_HEAD(async_domain
);
1310 enum snd_soc_bias_level bias
;
1312 trace_snd_soc_dapm_start(card
);
1314 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1315 if (d
->n_widgets
|| d
->codec
== NULL
) {
1316 if (d
->idle_bias_off
)
1317 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1319 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1323 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
1325 /* Check which widgets we need to power and store them in
1326 * lists indicating if they should be powered up or down. We
1327 * only check widgets that have been flagged as dirty but note
1328 * that new widgets may be added to the dirty list while we
1331 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1332 dapm_power_one_widget(w
, &up_list
, &down_list
);
1335 list_for_each_entry(w
, &card
->widgets
, list
) {
1336 list_del_init(&w
->dirty
);
1341 /* Supplies and micbiases only bring the
1342 * context up to STANDBY as unless something
1343 * else is active and passing audio they
1344 * generally don't require full power.
1347 case snd_soc_dapm_supply
:
1348 case snd_soc_dapm_micbias
:
1349 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1350 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1353 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1360 /* If there are no DAPM widgets then try to figure out power from the
1363 if (!dapm
->n_widgets
) {
1365 case SND_SOC_DAPM_STREAM_START
:
1366 case SND_SOC_DAPM_STREAM_RESUME
:
1367 dapm
->target_bias_level
= SND_SOC_BIAS_ON
;
1369 case SND_SOC_DAPM_STREAM_STOP
:
1370 if (dapm
->codec
->active
)
1371 dapm
->target_bias_level
= SND_SOC_BIAS_ON
;
1373 dapm
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1375 case SND_SOC_DAPM_STREAM_SUSPEND
:
1376 dapm
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1378 case SND_SOC_DAPM_STREAM_NOP
:
1379 dapm
->target_bias_level
= dapm
->bias_level
;
1386 /* Force all contexts in the card to the same bias state if
1387 * they're not ground referenced.
1389 bias
= SND_SOC_BIAS_OFF
;
1390 list_for_each_entry(d
, &card
->dapm_list
, list
)
1391 if (d
->target_bias_level
> bias
)
1392 bias
= d
->target_bias_level
;
1393 list_for_each_entry(d
, &card
->dapm_list
, list
)
1394 if (!d
->idle_bias_off
)
1395 d
->target_bias_level
= bias
;
1397 trace_snd_soc_dapm_walk_done(card
);
1399 /* Run all the bias changes in parallel */
1400 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1401 async_schedule_domain(dapm_pre_sequence_async
, d
,
1403 async_synchronize_full_domain(&async_domain
);
1405 /* Power down widgets first; try to avoid amplifying pops. */
1406 dapm_seq_run(dapm
, &down_list
, event
, false);
1408 dapm_widget_update(dapm
);
1411 dapm_seq_run(dapm
, &up_list
, event
, true);
1413 /* Run all the bias changes in parallel */
1414 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1415 async_schedule_domain(dapm_post_sequence_async
, d
,
1417 async_synchronize_full_domain(&async_domain
);
1419 pop_dbg(dapm
->dev
, card
->pop_time
,
1420 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1421 pop_wait(card
->pop_time
);
1423 trace_snd_soc_dapm_done(card
);
1428 #ifdef CONFIG_DEBUG_FS
1429 static int dapm_widget_power_open_file(struct inode
*inode
, struct file
*file
)
1431 file
->private_data
= inode
->i_private
;
1435 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1436 char __user
*user_buf
,
1437 size_t count
, loff_t
*ppos
)
1439 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1443 struct snd_soc_dapm_path
*p
= NULL
;
1445 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1449 in
= is_connected_input_ep(w
);
1450 dapm_clear_walk(w
->dapm
);
1451 out
= is_connected_output_ep(w
);
1452 dapm_clear_walk(w
->dapm
);
1454 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s in %d out %d",
1455 w
->name
, w
->power
? "On" : "Off", in
, out
);
1458 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1459 " - R%d(0x%x) bit %d",
1460 w
->reg
, w
->reg
, w
->shift
);
1462 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1465 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1467 w
->active
? "active" : "inactive");
1469 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1470 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1474 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1475 " in \"%s\" \"%s\"\n",
1476 p
->name
? p
->name
: "static",
1479 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1480 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1484 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1485 " out \"%s\" \"%s\"\n",
1486 p
->name
? p
->name
: "static",
1490 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1496 static const struct file_operations dapm_widget_power_fops
= {
1497 .open
= dapm_widget_power_open_file
,
1498 .read
= dapm_widget_power_read_file
,
1499 .llseek
= default_llseek
,
1502 static int dapm_bias_open_file(struct inode
*inode
, struct file
*file
)
1504 file
->private_data
= inode
->i_private
;
1508 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1509 size_t count
, loff_t
*ppos
)
1511 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1514 switch (dapm
->bias_level
) {
1515 case SND_SOC_BIAS_ON
:
1518 case SND_SOC_BIAS_PREPARE
:
1519 level
= "Prepare\n";
1521 case SND_SOC_BIAS_STANDBY
:
1522 level
= "Standby\n";
1524 case SND_SOC_BIAS_OFF
:
1529 level
= "Unknown\n";
1533 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1537 static const struct file_operations dapm_bias_fops
= {
1538 .open
= dapm_bias_open_file
,
1539 .read
= dapm_bias_read_file
,
1540 .llseek
= default_llseek
,
1543 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1544 struct dentry
*parent
)
1548 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
1550 if (!dapm
->debugfs_dapm
) {
1552 "Failed to create DAPM debugfs directory\n");
1556 d
= debugfs_create_file("bias_level", 0444,
1557 dapm
->debugfs_dapm
, dapm
,
1561 "ASoC: Failed to create bias level debugfs file\n");
1564 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1566 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1569 if (!dapm
->debugfs_dapm
|| !w
->name
)
1572 d
= debugfs_create_file(w
->name
, 0444,
1573 dapm
->debugfs_dapm
, w
,
1574 &dapm_widget_power_fops
);
1576 dev_warn(w
->dapm
->dev
,
1577 "ASoC: Failed to create %s debugfs file\n",
1581 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1583 debugfs_remove_recursive(dapm
->debugfs_dapm
);
1587 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1588 struct dentry
*parent
)
1592 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1596 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1602 /* test and update the power status of a mux widget */
1603 static int dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1604 struct snd_kcontrol
*kcontrol
, int change
,
1605 int mux
, struct soc_enum
*e
)
1607 struct snd_soc_dapm_path
*path
;
1610 if (widget
->id
!= snd_soc_dapm_mux
&&
1611 widget
->id
!= snd_soc_dapm_virt_mux
&&
1612 widget
->id
!= snd_soc_dapm_value_mux
)
1618 /* find dapm widget path assoc with kcontrol */
1619 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1620 if (path
->kcontrol
!= kcontrol
)
1623 if (!path
->name
|| !e
->texts
[mux
])
1627 /* we now need to match the string in the enum to the path */
1628 if (!(strcmp(path
->name
, e
->texts
[mux
]))) {
1629 path
->connect
= 1; /* new connection */
1630 dapm_mark_dirty(path
->source
, "mux connection");
1633 dapm_mark_dirty(path
->source
,
1634 "mux disconnection");
1635 path
->connect
= 0; /* old connection must be powered down */
1640 dapm_mark_dirty(widget
, "mux change");
1641 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1647 /* test and update the power status of a mixer or switch widget */
1648 static int dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1649 struct snd_kcontrol
*kcontrol
, int connect
)
1651 struct snd_soc_dapm_path
*path
;
1654 if (widget
->id
!= snd_soc_dapm_mixer
&&
1655 widget
->id
!= snd_soc_dapm_mixer_named_ctl
&&
1656 widget
->id
!= snd_soc_dapm_switch
)
1659 /* find dapm widget path assoc with kcontrol */
1660 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1661 if (path
->kcontrol
!= kcontrol
)
1664 /* found, now check type */
1666 path
->connect
= connect
;
1667 dapm_mark_dirty(path
->source
, "mixer connection");
1671 dapm_mark_dirty(widget
, "mixer update");
1672 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1678 /* show dapm widget status in sys fs */
1679 static ssize_t
dapm_widget_show(struct device
*dev
,
1680 struct device_attribute
*attr
, char *buf
)
1682 struct snd_soc_pcm_runtime
*rtd
=
1683 container_of(dev
, struct snd_soc_pcm_runtime
, dev
);
1684 struct snd_soc_codec
*codec
=rtd
->codec
;
1685 struct snd_soc_dapm_widget
*w
;
1687 char *state
= "not set";
1689 list_for_each_entry(w
, &codec
->card
->widgets
, list
) {
1690 if (w
->dapm
!= &codec
->dapm
)
1693 /* only display widgets that burnm power */
1695 case snd_soc_dapm_hp
:
1696 case snd_soc_dapm_mic
:
1697 case snd_soc_dapm_spk
:
1698 case snd_soc_dapm_line
:
1699 case snd_soc_dapm_micbias
:
1700 case snd_soc_dapm_dac
:
1701 case snd_soc_dapm_adc
:
1702 case snd_soc_dapm_pga
:
1703 case snd_soc_dapm_out_drv
:
1704 case snd_soc_dapm_mixer
:
1705 case snd_soc_dapm_mixer_named_ctl
:
1706 case snd_soc_dapm_supply
:
1708 count
+= sprintf(buf
+ count
, "%s: %s\n",
1709 w
->name
, w
->power
? "On":"Off");
1716 switch (codec
->dapm
.bias_level
) {
1717 case SND_SOC_BIAS_ON
:
1720 case SND_SOC_BIAS_PREPARE
:
1723 case SND_SOC_BIAS_STANDBY
:
1726 case SND_SOC_BIAS_OFF
:
1730 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
1735 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
1737 int snd_soc_dapm_sys_add(struct device
*dev
)
1739 return device_create_file(dev
, &dev_attr_dapm_widget
);
1742 static void snd_soc_dapm_sys_remove(struct device
*dev
)
1744 device_remove_file(dev
, &dev_attr_dapm_widget
);
1747 /* free all dapm widgets and resources */
1748 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
1750 struct snd_soc_dapm_widget
*w
, *next_w
;
1751 struct snd_soc_dapm_path
*p
, *next_p
;
1753 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
1754 if (w
->dapm
!= dapm
)
1758 * remove source and sink paths associated to this widget.
1759 * While removing the path, remove reference to it from both
1760 * source and sink widgets so that path is removed only once.
1762 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
) {
1763 list_del(&p
->list_sink
);
1764 list_del(&p
->list_source
);
1766 kfree(p
->long_name
);
1769 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
) {
1770 list_del(&p
->list_sink
);
1771 list_del(&p
->list_source
);
1773 kfree(p
->long_name
);
1776 kfree(w
->kcontrols
);
1782 static struct snd_soc_dapm_widget
*dapm_find_widget(
1783 struct snd_soc_dapm_context
*dapm
, const char *pin
,
1784 bool search_other_contexts
)
1786 struct snd_soc_dapm_widget
*w
;
1787 struct snd_soc_dapm_widget
*fallback
= NULL
;
1789 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
1790 if (!strcmp(w
->name
, pin
)) {
1791 if (w
->dapm
== dapm
)
1798 if (search_other_contexts
)
1804 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
1805 const char *pin
, int status
)
1807 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
1810 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
1814 w
->connected
= status
;
1817 dapm_mark_dirty(w
, "pin configuration");
1823 * snd_soc_dapm_sync - scan and power dapm paths
1824 * @dapm: DAPM context
1826 * Walks all dapm audio paths and powers widgets according to their
1827 * stream or path usage.
1829 * Returns 0 for success.
1831 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
1833 return dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
1835 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
1837 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
1838 const struct snd_soc_dapm_route
*route
)
1840 struct snd_soc_dapm_path
*path
;
1841 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
1842 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
1844 const char *control
= route
->control
;
1846 char prefixed_sink
[80];
1847 char prefixed_source
[80];
1850 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
1851 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
1852 dapm
->codec
->name_prefix
, route
->sink
);
1853 sink
= prefixed_sink
;
1854 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
1855 dapm
->codec
->name_prefix
, route
->source
);
1856 source
= prefixed_source
;
1859 source
= route
->source
;
1863 * find src and dest widgets over all widgets but favor a widget from
1864 * current DAPM context
1866 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
1867 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
1869 if (w
->dapm
== dapm
)
1873 if (!wsource
&& !(strcmp(w
->name
, source
))) {
1875 if (w
->dapm
== dapm
)
1879 /* use widget from another DAPM context if not found from this */
1885 if (wsource
== NULL
|| wsink
== NULL
)
1888 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
1892 path
->source
= wsource
;
1894 path
->connected
= route
->connected
;
1895 INIT_LIST_HEAD(&path
->list
);
1896 INIT_LIST_HEAD(&path
->list_source
);
1897 INIT_LIST_HEAD(&path
->list_sink
);
1899 /* check for external widgets */
1900 if (wsink
->id
== snd_soc_dapm_input
) {
1901 if (wsource
->id
== snd_soc_dapm_micbias
||
1902 wsource
->id
== snd_soc_dapm_mic
||
1903 wsource
->id
== snd_soc_dapm_line
||
1904 wsource
->id
== snd_soc_dapm_output
)
1907 if (wsource
->id
== snd_soc_dapm_output
) {
1908 if (wsink
->id
== snd_soc_dapm_spk
||
1909 wsink
->id
== snd_soc_dapm_hp
||
1910 wsink
->id
== snd_soc_dapm_line
||
1911 wsink
->id
== snd_soc_dapm_input
)
1915 /* connect static paths */
1916 if (control
== NULL
) {
1917 list_add(&path
->list
, &dapm
->card
->paths
);
1918 list_add(&path
->list_sink
, &wsink
->sources
);
1919 list_add(&path
->list_source
, &wsource
->sinks
);
1924 /* connect dynamic paths */
1925 switch (wsink
->id
) {
1926 case snd_soc_dapm_adc
:
1927 case snd_soc_dapm_dac
:
1928 case snd_soc_dapm_pga
:
1929 case snd_soc_dapm_out_drv
:
1930 case snd_soc_dapm_input
:
1931 case snd_soc_dapm_output
:
1932 case snd_soc_dapm_micbias
:
1933 case snd_soc_dapm_vmid
:
1934 case snd_soc_dapm_pre
:
1935 case snd_soc_dapm_post
:
1936 case snd_soc_dapm_supply
:
1937 case snd_soc_dapm_aif_in
:
1938 case snd_soc_dapm_aif_out
:
1939 list_add(&path
->list
, &dapm
->card
->paths
);
1940 list_add(&path
->list_sink
, &wsink
->sources
);
1941 list_add(&path
->list_source
, &wsource
->sinks
);
1944 case snd_soc_dapm_mux
:
1945 case snd_soc_dapm_virt_mux
:
1946 case snd_soc_dapm_value_mux
:
1947 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
1948 &wsink
->kcontrol_news
[0]);
1952 case snd_soc_dapm_switch
:
1953 case snd_soc_dapm_mixer
:
1954 case snd_soc_dapm_mixer_named_ctl
:
1955 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
1959 case snd_soc_dapm_hp
:
1960 case snd_soc_dapm_mic
:
1961 case snd_soc_dapm_line
:
1962 case snd_soc_dapm_spk
:
1963 list_add(&path
->list
, &dapm
->card
->paths
);
1964 list_add(&path
->list_sink
, &wsink
->sources
);
1965 list_add(&path
->list_source
, &wsource
->sinks
);
1972 dev_warn(dapm
->dev
, "asoc: no dapm match for %s --> %s --> %s\n",
1973 source
, control
, sink
);
1979 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
1980 * @dapm: DAPM context
1981 * @route: audio routes
1982 * @num: number of routes
1984 * Connects 2 dapm widgets together via a named audio path. The sink is
1985 * the widget receiving the audio signal, whilst the source is the sender
1986 * of the audio signal.
1988 * Returns 0 for success else error. On error all resources can be freed
1989 * with a call to snd_soc_card_free().
1991 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
1992 const struct snd_soc_dapm_route
*route
, int num
)
1996 for (i
= 0; i
< num
; i
++) {
1997 ret
= snd_soc_dapm_add_route(dapm
, route
);
1999 dev_err(dapm
->dev
, "Failed to add route %s->%s\n",
2000 route
->source
, route
->sink
);
2008 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2010 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2011 const struct snd_soc_dapm_route
*route
)
2013 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2016 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2019 struct snd_soc_dapm_path
*path
;
2023 dev_err(dapm
->dev
, "Unable to find source %s for weak route\n",
2029 dev_err(dapm
->dev
, "Unable to find sink %s for weak route\n",
2034 if (route
->control
|| route
->connected
)
2035 dev_warn(dapm
->dev
, "Ignoring control for weak route %s->%s\n",
2036 route
->source
, route
->sink
);
2038 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2039 if (path
->sink
== sink
) {
2046 dev_err(dapm
->dev
, "No path found for weak route %s->%s\n",
2047 route
->source
, route
->sink
);
2049 dev_warn(dapm
->dev
, "%d paths found for weak route %s->%s\n",
2050 count
, route
->source
, route
->sink
);
2056 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2057 * @dapm: DAPM context
2058 * @route: audio routes
2059 * @num: number of routes
2061 * Mark existing routes matching those specified in the passed array
2062 * as being weak, meaning that they are ignored for the purpose of
2063 * power decisions. The main intended use case is for sidetone paths
2064 * which couple audio between other independent paths if they are both
2065 * active in order to make the combination work better at the user
2066 * level but which aren't intended to be "used".
2068 * Note that CODEC drivers should not use this as sidetone type paths
2069 * can frequently also be used as bypass paths.
2071 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2072 const struct snd_soc_dapm_route
*route
, int num
)
2077 for (i
= 0; i
< num
; i
++) {
2078 err
= snd_soc_dapm_weak_route(dapm
, route
);
2086 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2089 * snd_soc_dapm_new_widgets - add new dapm widgets
2090 * @dapm: DAPM context
2092 * Checks the codec for any new dapm widgets and creates them if found.
2094 * Returns 0 for success.
2096 int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context
*dapm
)
2098 struct snd_soc_dapm_widget
*w
;
2101 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2106 if (w
->num_kcontrols
) {
2107 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2108 sizeof(struct snd_kcontrol
*),
2115 case snd_soc_dapm_switch
:
2116 case snd_soc_dapm_mixer
:
2117 case snd_soc_dapm_mixer_named_ctl
:
2118 w
->power_check
= dapm_generic_check_power
;
2121 case snd_soc_dapm_mux
:
2122 case snd_soc_dapm_virt_mux
:
2123 case snd_soc_dapm_value_mux
:
2124 w
->power_check
= dapm_generic_check_power
;
2127 case snd_soc_dapm_adc
:
2128 case snd_soc_dapm_aif_out
:
2129 w
->power_check
= dapm_adc_check_power
;
2131 case snd_soc_dapm_dac
:
2132 case snd_soc_dapm_aif_in
:
2133 w
->power_check
= dapm_dac_check_power
;
2135 case snd_soc_dapm_pga
:
2136 case snd_soc_dapm_out_drv
:
2137 w
->power_check
= dapm_generic_check_power
;
2140 case snd_soc_dapm_input
:
2141 case snd_soc_dapm_output
:
2142 case snd_soc_dapm_micbias
:
2143 case snd_soc_dapm_spk
:
2144 case snd_soc_dapm_hp
:
2145 case snd_soc_dapm_mic
:
2146 case snd_soc_dapm_line
:
2147 w
->power_check
= dapm_generic_check_power
;
2149 case snd_soc_dapm_supply
:
2150 w
->power_check
= dapm_supply_check_power
;
2151 case snd_soc_dapm_vmid
:
2152 case snd_soc_dapm_pre
:
2153 case snd_soc_dapm_post
:
2157 if (!w
->power_check
)
2158 w
->power_check
= dapm_always_on_check_power
;
2160 /* Read the initial power state from the device */
2162 val
= soc_widget_read(w
, w
->reg
);
2163 val
&= 1 << w
->shift
;
2173 list_add(&w
->dirty
, &(w
->dapm
->card
->dapm_dirty
));
2174 dapm_debugfs_add_widget(w
);
2177 dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2180 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2183 * snd_soc_dapm_get_volsw - dapm mixer get callback
2184 * @kcontrol: mixer control
2185 * @ucontrol: control element information
2187 * Callback to get the value of a dapm mixer control.
2189 * Returns 0 for success.
2191 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2192 struct snd_ctl_elem_value
*ucontrol
)
2194 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2195 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2196 struct soc_mixer_control
*mc
=
2197 (struct soc_mixer_control
*)kcontrol
->private_value
;
2198 unsigned int reg
= mc
->reg
;
2199 unsigned int shift
= mc
->shift
;
2200 unsigned int rshift
= mc
->rshift
;
2202 unsigned int invert
= mc
->invert
;
2203 unsigned int mask
= (1 << fls(max
)) - 1;
2205 ucontrol
->value
.integer
.value
[0] =
2206 (snd_soc_read(widget
->codec
, reg
) >> shift
) & mask
;
2207 if (shift
!= rshift
)
2208 ucontrol
->value
.integer
.value
[1] =
2209 (snd_soc_read(widget
->codec
, reg
) >> rshift
) & mask
;
2211 ucontrol
->value
.integer
.value
[0] =
2212 max
- ucontrol
->value
.integer
.value
[0];
2213 if (shift
!= rshift
)
2214 ucontrol
->value
.integer
.value
[1] =
2215 max
- ucontrol
->value
.integer
.value
[1];
2220 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2223 * snd_soc_dapm_put_volsw - dapm mixer set callback
2224 * @kcontrol: mixer control
2225 * @ucontrol: control element information
2227 * Callback to set the value of a dapm mixer control.
2229 * Returns 0 for success.
2231 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
2232 struct snd_ctl_elem_value
*ucontrol
)
2234 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2235 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2236 struct snd_soc_codec
*codec
= widget
->codec
;
2237 struct soc_mixer_control
*mc
=
2238 (struct soc_mixer_control
*)kcontrol
->private_value
;
2239 unsigned int reg
= mc
->reg
;
2240 unsigned int shift
= mc
->shift
;
2242 unsigned int mask
= (1 << fls(max
)) - 1;
2243 unsigned int invert
= mc
->invert
;
2245 int connect
, change
;
2246 struct snd_soc_dapm_update update
;
2249 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2253 mask
= mask
<< shift
;
2257 /* new connection */
2258 connect
= invert
? 0 : 1;
2260 /* old connection must be powered down */
2261 connect
= invert
? 1 : 0;
2263 mutex_lock(&codec
->mutex
);
2265 change
= snd_soc_test_bits(widget
->codec
, reg
, mask
, val
);
2267 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2268 widget
= wlist
->widgets
[wi
];
2270 widget
->value
= val
;
2272 update
.kcontrol
= kcontrol
;
2273 update
.widget
= widget
;
2277 widget
->dapm
->update
= &update
;
2279 dapm_mixer_update_power(widget
, kcontrol
, connect
);
2281 widget
->dapm
->update
= NULL
;
2285 mutex_unlock(&codec
->mutex
);
2288 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
2291 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2292 * @kcontrol: mixer control
2293 * @ucontrol: control element information
2295 * Callback to get the value of a dapm enumerated double mixer control.
2297 * Returns 0 for success.
2299 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2300 struct snd_ctl_elem_value
*ucontrol
)
2302 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2303 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2304 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2305 unsigned int val
, bitmask
;
2307 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2309 val
= snd_soc_read(widget
->codec
, e
->reg
);
2310 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & (bitmask
- 1);
2311 if (e
->shift_l
!= e
->shift_r
)
2312 ucontrol
->value
.enumerated
.item
[1] =
2313 (val
>> e
->shift_r
) & (bitmask
- 1);
2317 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2320 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2321 * @kcontrol: mixer control
2322 * @ucontrol: control element information
2324 * Callback to set the value of a dapm enumerated double mixer control.
2326 * Returns 0 for success.
2328 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2329 struct snd_ctl_elem_value
*ucontrol
)
2331 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2332 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2333 struct snd_soc_codec
*codec
= widget
->codec
;
2334 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2335 unsigned int val
, mux
, change
;
2336 unsigned int mask
, bitmask
;
2337 struct snd_soc_dapm_update update
;
2340 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2342 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2344 mux
= ucontrol
->value
.enumerated
.item
[0];
2345 val
= mux
<< e
->shift_l
;
2346 mask
= (bitmask
- 1) << e
->shift_l
;
2347 if (e
->shift_l
!= e
->shift_r
) {
2348 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2350 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2351 mask
|= (bitmask
- 1) << e
->shift_r
;
2354 mutex_lock(&codec
->mutex
);
2356 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2358 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2359 widget
= wlist
->widgets
[wi
];
2361 widget
->value
= val
;
2363 update
.kcontrol
= kcontrol
;
2364 update
.widget
= widget
;
2365 update
.reg
= e
->reg
;
2368 widget
->dapm
->update
= &update
;
2370 dapm_mux_update_power(widget
, kcontrol
, change
, mux
, e
);
2372 widget
->dapm
->update
= NULL
;
2376 mutex_unlock(&codec
->mutex
);
2379 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2382 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2383 * @kcontrol: mixer control
2384 * @ucontrol: control element information
2386 * Returns 0 for success.
2388 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
2389 struct snd_ctl_elem_value
*ucontrol
)
2391 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2392 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2394 ucontrol
->value
.enumerated
.item
[0] = widget
->value
;
2398 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
2401 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2402 * @kcontrol: mixer control
2403 * @ucontrol: control element information
2405 * Returns 0 for success.
2407 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
2408 struct snd_ctl_elem_value
*ucontrol
)
2410 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2411 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2412 struct snd_soc_codec
*codec
= widget
->codec
;
2413 struct soc_enum
*e
=
2414 (struct soc_enum
*)kcontrol
->private_value
;
2419 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
2422 mutex_lock(&codec
->mutex
);
2424 change
= widget
->value
!= ucontrol
->value
.enumerated
.item
[0];
2426 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2427 widget
= wlist
->widgets
[wi
];
2429 widget
->value
= ucontrol
->value
.enumerated
.item
[0];
2431 dapm_mux_update_power(widget
, kcontrol
, change
,
2436 mutex_unlock(&codec
->mutex
);
2439 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
2442 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2444 * @kcontrol: mixer control
2445 * @ucontrol: control element information
2447 * Callback to get the value of a dapm semi enumerated double mixer control.
2449 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2450 * used for handling bitfield coded enumeration for example.
2452 * Returns 0 for success.
2454 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2455 struct snd_ctl_elem_value
*ucontrol
)
2457 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2458 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2459 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2460 unsigned int reg_val
, val
, mux
;
2462 reg_val
= snd_soc_read(widget
->codec
, e
->reg
);
2463 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2464 for (mux
= 0; mux
< e
->max
; mux
++) {
2465 if (val
== e
->values
[mux
])
2468 ucontrol
->value
.enumerated
.item
[0] = mux
;
2469 if (e
->shift_l
!= e
->shift_r
) {
2470 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2471 for (mux
= 0; mux
< e
->max
; mux
++) {
2472 if (val
== e
->values
[mux
])
2475 ucontrol
->value
.enumerated
.item
[1] = mux
;
2480 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
2483 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2485 * @kcontrol: mixer control
2486 * @ucontrol: control element information
2488 * Callback to set the value of a dapm semi enumerated double mixer control.
2490 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2491 * used for handling bitfield coded enumeration for example.
2493 * Returns 0 for success.
2495 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2496 struct snd_ctl_elem_value
*ucontrol
)
2498 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2499 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2500 struct snd_soc_codec
*codec
= widget
->codec
;
2501 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2502 unsigned int val
, mux
, change
;
2504 struct snd_soc_dapm_update update
;
2507 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2509 mux
= ucontrol
->value
.enumerated
.item
[0];
2510 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2511 mask
= e
->mask
<< e
->shift_l
;
2512 if (e
->shift_l
!= e
->shift_r
) {
2513 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2515 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2516 mask
|= e
->mask
<< e
->shift_r
;
2519 mutex_lock(&codec
->mutex
);
2521 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2523 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2524 widget
= wlist
->widgets
[wi
];
2526 widget
->value
= val
;
2528 update
.kcontrol
= kcontrol
;
2529 update
.widget
= widget
;
2530 update
.reg
= e
->reg
;
2533 widget
->dapm
->update
= &update
;
2535 dapm_mux_update_power(widget
, kcontrol
, change
, mux
, e
);
2537 widget
->dapm
->update
= NULL
;
2541 mutex_unlock(&codec
->mutex
);
2544 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
2547 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2549 * @kcontrol: mixer control
2550 * @uinfo: control element information
2552 * Callback to provide information about a pin switch control.
2554 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
2555 struct snd_ctl_elem_info
*uinfo
)
2557 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2559 uinfo
->value
.integer
.min
= 0;
2560 uinfo
->value
.integer
.max
= 1;
2564 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
2567 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2569 * @kcontrol: mixer control
2572 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
2573 struct snd_ctl_elem_value
*ucontrol
)
2575 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2576 const char *pin
= (const char *)kcontrol
->private_value
;
2578 mutex_lock(&codec
->mutex
);
2580 ucontrol
->value
.integer
.value
[0] =
2581 snd_soc_dapm_get_pin_status(&codec
->dapm
, pin
);
2583 mutex_unlock(&codec
->mutex
);
2587 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
2590 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
2592 * @kcontrol: mixer control
2595 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
2596 struct snd_ctl_elem_value
*ucontrol
)
2598 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
2599 const char *pin
= (const char *)kcontrol
->private_value
;
2601 mutex_lock(&codec
->mutex
);
2603 if (ucontrol
->value
.integer
.value
[0])
2604 snd_soc_dapm_enable_pin(&codec
->dapm
, pin
);
2606 snd_soc_dapm_disable_pin(&codec
->dapm
, pin
);
2608 snd_soc_dapm_sync(&codec
->dapm
);
2610 mutex_unlock(&codec
->mutex
);
2614 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
2617 * snd_soc_dapm_new_control - create new dapm control
2618 * @dapm: DAPM context
2619 * @widget: widget template
2621 * Creates a new dapm control based upon the template.
2623 * Returns 0 for success else error.
2625 int snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
2626 const struct snd_soc_dapm_widget
*widget
)
2628 struct snd_soc_dapm_widget
*w
;
2631 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
2634 name_len
= strlen(widget
->name
) + 1;
2635 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
2636 name_len
+= 1 + strlen(dapm
->codec
->name_prefix
);
2637 w
->name
= kmalloc(name_len
, GFP_KERNEL
);
2638 if (w
->name
== NULL
) {
2642 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
2643 snprintf(w
->name
, name_len
, "%s %s",
2644 dapm
->codec
->name_prefix
, widget
->name
);
2646 snprintf(w
->name
, name_len
, "%s", widget
->name
);
2650 w
->codec
= dapm
->codec
;
2651 w
->platform
= dapm
->platform
;
2652 INIT_LIST_HEAD(&w
->sources
);
2653 INIT_LIST_HEAD(&w
->sinks
);
2654 INIT_LIST_HEAD(&w
->list
);
2655 INIT_LIST_HEAD(&w
->dirty
);
2656 list_add(&w
->list
, &dapm
->card
->widgets
);
2658 /* machine layer set ups unconnected pins and insertions */
2662 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control
);
2665 * snd_soc_dapm_new_controls - create new dapm controls
2666 * @dapm: DAPM context
2667 * @widget: widget array
2668 * @num: number of widgets
2670 * Creates new DAPM controls based upon the templates.
2672 * Returns 0 for success else error.
2674 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
2675 const struct snd_soc_dapm_widget
*widget
,
2680 for (i
= 0; i
< num
; i
++) {
2681 ret
= snd_soc_dapm_new_control(dapm
, widget
);
2684 "ASoC: Failed to create DAPM control %s: %d\n",
2692 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
2694 static void soc_dapm_stream_event(struct snd_soc_dapm_context
*dapm
,
2695 const char *stream
, int event
)
2697 struct snd_soc_dapm_widget
*w
;
2699 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2701 if (!w
->sname
|| w
->dapm
!= dapm
)
2703 dev_vdbg(w
->dapm
->dev
, "widget %s\n %s stream %s event %d\n",
2704 w
->name
, w
->sname
, stream
, event
);
2705 if (strstr(w
->sname
, stream
)) {
2706 dapm_mark_dirty(w
, "stream event");
2708 case SND_SOC_DAPM_STREAM_START
:
2711 case SND_SOC_DAPM_STREAM_STOP
:
2714 case SND_SOC_DAPM_STREAM_SUSPEND
:
2715 case SND_SOC_DAPM_STREAM_RESUME
:
2716 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
2717 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
2723 dapm_power_widgets(dapm
, event
);
2725 /* do we need to notify any clients that DAPM stream is complete */
2726 if (dapm
->stream_event
)
2727 dapm
->stream_event(dapm
, event
);
2731 * snd_soc_dapm_stream_event - send a stream event to the dapm core
2732 * @rtd: PCM runtime data
2733 * @stream: stream name
2734 * @event: stream event
2736 * Sends a stream event to the dapm core. The core then makes any
2737 * necessary widget power changes.
2739 * Returns 0 for success else error.
2741 int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
,
2742 const char *stream
, int event
)
2744 struct snd_soc_codec
*codec
= rtd
->codec
;
2749 mutex_lock(&codec
->mutex
);
2750 soc_dapm_stream_event(&codec
->dapm
, stream
, event
);
2751 mutex_unlock(&codec
->mutex
);
2756 * snd_soc_dapm_enable_pin - enable pin.
2757 * @dapm: DAPM context
2760 * Enables input/output pin and its parents or children widgets iff there is
2761 * a valid audio route and active audio stream.
2762 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2763 * do any widget power switching.
2765 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
2767 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
2769 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
2772 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
2773 * @dapm: DAPM context
2776 * Enables input/output pin regardless of any other state. This is
2777 * intended for use with microphone bias supplies used in microphone
2780 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2781 * do any widget power switching.
2783 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
2786 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2789 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
2793 dev_dbg(w
->dapm
->dev
, "dapm: force enable pin %s\n", pin
);
2796 dapm_mark_dirty(w
, "force enable");
2800 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
2803 * snd_soc_dapm_disable_pin - disable pin.
2804 * @dapm: DAPM context
2807 * Disables input/output pin and its parents or children widgets.
2808 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2809 * do any widget power switching.
2811 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
2814 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
2816 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
2819 * snd_soc_dapm_nc_pin - permanently disable pin.
2820 * @dapm: DAPM context
2823 * Marks the specified pin as being not connected, disabling it along
2824 * any parent or child widgets. At present this is identical to
2825 * snd_soc_dapm_disable_pin() but in future it will be extended to do
2826 * additional things such as disabling controls which only affect
2827 * paths through the pin.
2829 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2830 * do any widget power switching.
2832 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
2834 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
2836 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
2839 * snd_soc_dapm_get_pin_status - get audio pin status
2840 * @dapm: DAPM context
2841 * @pin: audio signal pin endpoint (or start point)
2843 * Get audio pin status - connected or disconnected.
2845 * Returns 1 for connected otherwise 0.
2847 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
2850 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2853 return w
->connected
;
2857 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
2860 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
2861 * @dapm: DAPM context
2862 * @pin: audio signal pin endpoint (or start point)
2864 * Mark the given endpoint or pin as ignoring suspend. When the
2865 * system is disabled a path between two endpoints flagged as ignoring
2866 * suspend will not be disabled. The path must already be enabled via
2867 * normal means at suspend time, it will not be turned on if it was not
2870 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
2873 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
2876 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
2880 w
->ignore_suspend
= 1;
2884 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
2887 * snd_soc_dapm_free - free dapm resources
2888 * @dapm: DAPM context
2890 * Free all dapm widgets and resources.
2892 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
2894 snd_soc_dapm_sys_remove(dapm
->dev
);
2895 dapm_debugfs_cleanup(dapm
);
2896 dapm_free_widgets(dapm
);
2897 list_del(&dapm
->list
);
2899 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
2901 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context
*dapm
)
2903 struct snd_soc_dapm_widget
*w
;
2904 LIST_HEAD(down_list
);
2907 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2908 if (w
->dapm
!= dapm
)
2911 dapm_seq_insert(w
, &down_list
, false);
2917 /* If there were no widgets to power down we're already in
2921 snd_soc_dapm_set_bias_level(dapm
, SND_SOC_BIAS_PREPARE
);
2922 dapm_seq_run(dapm
, &down_list
, 0, false);
2923 snd_soc_dapm_set_bias_level(dapm
, SND_SOC_BIAS_STANDBY
);
2928 * snd_soc_dapm_shutdown - callback for system shutdown
2930 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
2932 struct snd_soc_codec
*codec
;
2934 list_for_each_entry(codec
, &card
->codec_dev_list
, list
) {
2935 soc_dapm_shutdown_codec(&codec
->dapm
);
2936 snd_soc_dapm_set_bias_level(&codec
->dapm
, SND_SOC_BIAS_OFF
);
2940 /* Module information */
2941 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
2942 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
2943 MODULE_LICENSE("GPL");