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/delay.h>
37 #include <linux/bitops.h>
38 #include <linux/platform_device.h>
39 #include <linux/jiffies.h>
40 #include <linux/debugfs.h>
41 #include <sound/core.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/soc-dapm.h>
45 #include <sound/initval.h>
47 /* dapm power sequences - make this per codec in the future */
48 static int dapm_up_seq
[] = {
49 [snd_soc_dapm_pre
] = 0,
50 [snd_soc_dapm_supply
] = 1,
51 [snd_soc_dapm_micbias
] = 2,
52 [snd_soc_dapm_aif_in
] = 3,
53 [snd_soc_dapm_aif_out
] = 3,
54 [snd_soc_dapm_mic
] = 4,
55 [snd_soc_dapm_mux
] = 5,
56 [snd_soc_dapm_value_mux
] = 5,
57 [snd_soc_dapm_dac
] = 6,
58 [snd_soc_dapm_mixer
] = 7,
59 [snd_soc_dapm_mixer_named_ctl
] = 7,
60 [snd_soc_dapm_pga
] = 8,
61 [snd_soc_dapm_adc
] = 9,
62 [snd_soc_dapm_hp
] = 10,
63 [snd_soc_dapm_spk
] = 10,
64 [snd_soc_dapm_post
] = 11,
67 static int dapm_down_seq
[] = {
68 [snd_soc_dapm_pre
] = 0,
69 [snd_soc_dapm_adc
] = 1,
70 [snd_soc_dapm_hp
] = 2,
71 [snd_soc_dapm_spk
] = 2,
72 [snd_soc_dapm_pga
] = 4,
73 [snd_soc_dapm_mixer_named_ctl
] = 5,
74 [snd_soc_dapm_mixer
] = 5,
75 [snd_soc_dapm_dac
] = 6,
76 [snd_soc_dapm_mic
] = 7,
77 [snd_soc_dapm_micbias
] = 8,
78 [snd_soc_dapm_mux
] = 9,
79 [snd_soc_dapm_value_mux
] = 9,
80 [snd_soc_dapm_aif_in
] = 10,
81 [snd_soc_dapm_aif_out
] = 10,
82 [snd_soc_dapm_supply
] = 11,
83 [snd_soc_dapm_post
] = 12,
86 static void pop_wait(u32 pop_time
)
89 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
92 static void pop_dbg(u32 pop_time
, const char *fmt
, ...)
105 /* create a new dapm widget */
106 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
107 const struct snd_soc_dapm_widget
*_widget
)
109 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
113 * snd_soc_dapm_set_bias_level - set the bias level for the system
114 * @socdev: audio device
115 * @level: level to configure
117 * Configure the bias (power) levels for the SoC audio device.
119 * Returns 0 for success else error.
121 static int snd_soc_dapm_set_bias_level(struct snd_soc_device
*socdev
,
122 enum snd_soc_bias_level level
)
124 struct snd_soc_card
*card
= socdev
->card
;
125 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
129 case SND_SOC_BIAS_ON
:
130 dev_dbg(socdev
->dev
, "Setting full bias\n");
132 case SND_SOC_BIAS_PREPARE
:
133 dev_dbg(socdev
->dev
, "Setting bias prepare\n");
135 case SND_SOC_BIAS_STANDBY
:
136 dev_dbg(socdev
->dev
, "Setting standby bias\n");
138 case SND_SOC_BIAS_OFF
:
139 dev_dbg(socdev
->dev
, "Setting bias off\n");
142 dev_err(socdev
->dev
, "Setting invalid bias %d\n", level
);
146 if (card
->set_bias_level
)
147 ret
= card
->set_bias_level(card
, level
);
149 if (codec
->set_bias_level
)
150 ret
= codec
->set_bias_level(codec
, level
);
152 codec
->bias_level
= level
;
158 /* set up initial codec paths */
159 static void dapm_set_path_status(struct snd_soc_dapm_widget
*w
,
160 struct snd_soc_dapm_path
*p
, int i
)
163 case snd_soc_dapm_switch
:
164 case snd_soc_dapm_mixer
:
165 case snd_soc_dapm_mixer_named_ctl
: {
167 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
168 w
->kcontrols
[i
].private_value
;
169 unsigned int reg
= mc
->reg
;
170 unsigned int shift
= mc
->shift
;
172 unsigned int mask
= (1 << fls(max
)) - 1;
173 unsigned int invert
= mc
->invert
;
175 val
= snd_soc_read(w
->codec
, reg
);
176 val
= (val
>> shift
) & mask
;
178 if ((invert
&& !val
) || (!invert
&& val
))
184 case snd_soc_dapm_mux
: {
185 struct soc_enum
*e
= (struct soc_enum
*)w
->kcontrols
[i
].private_value
;
186 int val
, item
, bitmask
;
188 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
190 val
= snd_soc_read(w
->codec
, e
->reg
);
191 item
= (val
>> e
->shift_l
) & (bitmask
- 1);
194 for (i
= 0; i
< e
->max
; i
++) {
195 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
200 case snd_soc_dapm_value_mux
: {
201 struct soc_enum
*e
= (struct soc_enum
*)
202 w
->kcontrols
[i
].private_value
;
205 val
= snd_soc_read(w
->codec
, e
->reg
);
206 val
= (val
>> e
->shift_l
) & e
->mask
;
207 for (item
= 0; item
< e
->max
; item
++) {
208 if (val
== e
->values
[item
])
213 for (i
= 0; i
< e
->max
; i
++) {
214 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
219 /* does not effect routing - always connected */
220 case snd_soc_dapm_pga
:
221 case snd_soc_dapm_output
:
222 case snd_soc_dapm_adc
:
223 case snd_soc_dapm_input
:
224 case snd_soc_dapm_dac
:
225 case snd_soc_dapm_micbias
:
226 case snd_soc_dapm_vmid
:
227 case snd_soc_dapm_supply
:
228 case snd_soc_dapm_aif_in
:
229 case snd_soc_dapm_aif_out
:
232 /* does effect routing - dynamically connected */
233 case snd_soc_dapm_hp
:
234 case snd_soc_dapm_mic
:
235 case snd_soc_dapm_spk
:
236 case snd_soc_dapm_line
:
237 case snd_soc_dapm_pre
:
238 case snd_soc_dapm_post
:
244 /* connect mux widget to its interconnecting audio paths */
245 static int dapm_connect_mux(struct snd_soc_codec
*codec
,
246 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
247 struct snd_soc_dapm_path
*path
, const char *control_name
,
248 const struct snd_kcontrol_new
*kcontrol
)
250 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
253 for (i
= 0; i
< e
->max
; i
++) {
254 if (!(strcmp(control_name
, e
->texts
[i
]))) {
255 list_add(&path
->list
, &codec
->dapm_paths
);
256 list_add(&path
->list_sink
, &dest
->sources
);
257 list_add(&path
->list_source
, &src
->sinks
);
258 path
->name
= (char*)e
->texts
[i
];
259 dapm_set_path_status(dest
, path
, 0);
267 /* connect mixer widget to its interconnecting audio paths */
268 static int dapm_connect_mixer(struct snd_soc_codec
*codec
,
269 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
270 struct snd_soc_dapm_path
*path
, const char *control_name
)
274 /* search for mixer kcontrol */
275 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
276 if (!strcmp(control_name
, dest
->kcontrols
[i
].name
)) {
277 list_add(&path
->list
, &codec
->dapm_paths
);
278 list_add(&path
->list_sink
, &dest
->sources
);
279 list_add(&path
->list_source
, &src
->sinks
);
280 path
->name
= dest
->kcontrols
[i
].name
;
281 dapm_set_path_status(dest
, path
, i
);
288 /* update dapm codec register bits */
289 static int dapm_update_bits(struct snd_soc_dapm_widget
*widget
)
292 unsigned int old
, new;
293 struct snd_soc_codec
*codec
= widget
->codec
;
295 /* check for valid widgets */
296 if (widget
->reg
< 0 || widget
->id
== snd_soc_dapm_input
||
297 widget
->id
== snd_soc_dapm_output
||
298 widget
->id
== snd_soc_dapm_hp
||
299 widget
->id
== snd_soc_dapm_mic
||
300 widget
->id
== snd_soc_dapm_line
||
301 widget
->id
== snd_soc_dapm_spk
)
304 power
= widget
->power
;
306 power
= (power
? 0:1);
308 old
= snd_soc_read(codec
, widget
->reg
);
309 new = (old
& ~(0x1 << widget
->shift
)) | (power
<< widget
->shift
);
313 pop_dbg(codec
->pop_time
, "pop test %s : %s in %d ms\n",
314 widget
->name
, widget
->power
? "on" : "off",
316 pop_wait(codec
->pop_time
);
317 snd_soc_write(codec
, widget
->reg
, new);
319 pr_debug("reg %x old %x new %x change %d\n", widget
->reg
,
324 /* create new dapm mixer control */
325 static int dapm_new_mixer(struct snd_soc_codec
*codec
,
326 struct snd_soc_dapm_widget
*w
)
330 struct snd_soc_dapm_path
*path
;
333 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
336 list_for_each_entry(path
, &w
->sources
, list_sink
) {
338 /* mixer/mux paths name must match control name */
339 if (path
->name
!= (char*)w
->kcontrols
[i
].name
)
342 /* add dapm control with long name.
343 * for dapm_mixer this is the concatenation of the
344 * mixer and kcontrol name.
345 * for dapm_mixer_named_ctl this is simply the
348 name_len
= strlen(w
->kcontrols
[i
].name
) + 1;
349 if (w
->id
!= snd_soc_dapm_mixer_named_ctl
)
350 name_len
+= 1 + strlen(w
->name
);
352 path
->long_name
= kmalloc(name_len
, GFP_KERNEL
);
354 if (path
->long_name
== NULL
)
359 snprintf(path
->long_name
, name_len
, "%s %s",
360 w
->name
, w
->kcontrols
[i
].name
);
362 case snd_soc_dapm_mixer_named_ctl
:
363 snprintf(path
->long_name
, name_len
, "%s",
364 w
->kcontrols
[i
].name
);
368 path
->long_name
[name_len
- 1] = '\0';
370 path
->kcontrol
= snd_soc_cnew(&w
->kcontrols
[i
], w
,
372 ret
= snd_ctl_add(codec
->card
, path
->kcontrol
);
374 printk(KERN_ERR
"asoc: failed to add dapm kcontrol %s: %d\n",
377 kfree(path
->long_name
);
378 path
->long_name
= NULL
;
386 /* create new dapm mux control */
387 static int dapm_new_mux(struct snd_soc_codec
*codec
,
388 struct snd_soc_dapm_widget
*w
)
390 struct snd_soc_dapm_path
*path
= NULL
;
391 struct snd_kcontrol
*kcontrol
;
394 if (!w
->num_kcontrols
) {
395 printk(KERN_ERR
"asoc: mux %s has no controls\n", w
->name
);
399 kcontrol
= snd_soc_cnew(&w
->kcontrols
[0], w
, w
->name
);
400 ret
= snd_ctl_add(codec
->card
, kcontrol
);
404 list_for_each_entry(path
, &w
->sources
, list_sink
)
405 path
->kcontrol
= kcontrol
;
410 printk(KERN_ERR
"asoc: failed to add kcontrol %s\n", w
->name
);
414 /* create new dapm volume control */
415 static int dapm_new_pga(struct snd_soc_codec
*codec
,
416 struct snd_soc_dapm_widget
*w
)
418 if (w
->num_kcontrols
)
419 pr_err("asoc: PGA controls not supported: '%s'\n", w
->name
);
424 /* reset 'walked' bit for each dapm path */
425 static inline void dapm_clear_walk(struct snd_soc_codec
*codec
)
427 struct snd_soc_dapm_path
*p
;
429 list_for_each_entry(p
, &codec
->dapm_paths
, list
)
434 * Recursively check for a completed path to an active or physically connected
435 * output widget. Returns number of complete paths.
437 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
)
439 struct snd_soc_dapm_path
*path
;
442 if (widget
->id
== snd_soc_dapm_supply
)
445 switch (widget
->id
) {
446 case snd_soc_dapm_adc
:
447 case snd_soc_dapm_aif_out
:
454 if (widget
->connected
) {
455 /* connected pin ? */
456 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
)
459 /* connected jack or spk ? */
460 if (widget
->id
== snd_soc_dapm_hp
|| widget
->id
== snd_soc_dapm_spk
||
461 (widget
->id
== snd_soc_dapm_line
&& !list_empty(&widget
->sources
)))
465 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
469 if (path
->sink
&& path
->connect
) {
471 con
+= is_connected_output_ep(path
->sink
);
479 * Recursively check for a completed path to an active or physically connected
480 * input widget. Returns number of complete paths.
482 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
)
484 struct snd_soc_dapm_path
*path
;
487 if (widget
->id
== snd_soc_dapm_supply
)
490 /* active stream ? */
491 switch (widget
->id
) {
492 case snd_soc_dapm_dac
:
493 case snd_soc_dapm_aif_in
:
500 if (widget
->connected
) {
501 /* connected pin ? */
502 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
)
505 /* connected VMID/Bias for lower pops */
506 if (widget
->id
== snd_soc_dapm_vmid
)
509 /* connected jack ? */
510 if (widget
->id
== snd_soc_dapm_mic
||
511 (widget
->id
== snd_soc_dapm_line
&& !list_empty(&widget
->sinks
)))
515 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
519 if (path
->source
&& path
->connect
) {
521 con
+= is_connected_input_ep(path
->source
);
529 * Handler for generic register modifier widget.
531 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
532 struct snd_kcontrol
*kcontrol
, int event
)
536 if (SND_SOC_DAPM_EVENT_ON(event
))
541 snd_soc_update_bits(w
->codec
, -(w
->reg
+ 1),
542 w
->mask
<< w
->shift
, val
<< w
->shift
);
546 EXPORT_SYMBOL_GPL(dapm_reg_event
);
548 /* Standard power change method, used to apply power changes to most
551 static int dapm_generic_apply_power(struct snd_soc_dapm_widget
*w
)
555 /* call any power change event handlers */
557 pr_debug("power %s event for %s flags %x\n",
558 w
->power
? "on" : "off",
559 w
->name
, w
->event_flags
);
561 /* power up pre event */
562 if (w
->power
&& w
->event
&&
563 (w
->event_flags
& SND_SOC_DAPM_PRE_PMU
)) {
564 ret
= w
->event(w
, NULL
, SND_SOC_DAPM_PRE_PMU
);
569 /* power down pre event */
570 if (!w
->power
&& w
->event
&&
571 (w
->event_flags
& SND_SOC_DAPM_PRE_PMD
)) {
572 ret
= w
->event(w
, NULL
, SND_SOC_DAPM_PRE_PMD
);
579 /* power up post event */
580 if (w
->power
&& w
->event
&&
581 (w
->event_flags
& SND_SOC_DAPM_POST_PMU
)) {
583 NULL
, SND_SOC_DAPM_POST_PMU
);
588 /* power down post event */
589 if (!w
->power
&& w
->event
&&
590 (w
->event_flags
& SND_SOC_DAPM_POST_PMD
)) {
591 ret
= w
->event(w
, NULL
, SND_SOC_DAPM_POST_PMD
);
599 /* Generic check to see if a widget should be powered.
601 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
605 in
= is_connected_input_ep(w
);
606 dapm_clear_walk(w
->codec
);
607 out
= is_connected_output_ep(w
);
608 dapm_clear_walk(w
->codec
);
609 return out
!= 0 && in
!= 0;
612 /* Check to see if an ADC has power */
613 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
618 in
= is_connected_input_ep(w
);
619 dapm_clear_walk(w
->codec
);
622 return dapm_generic_check_power(w
);
626 /* Check to see if a DAC has power */
627 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
632 out
= is_connected_output_ep(w
);
633 dapm_clear_walk(w
->codec
);
636 return dapm_generic_check_power(w
);
640 /* Check to see if a power supply is needed */
641 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
643 struct snd_soc_dapm_path
*path
;
646 /* Check if one of our outputs is connected */
647 list_for_each_entry(path
, &w
->sinks
, list_source
) {
648 if (path
->connected
&&
649 !path
->connected(path
->source
, path
->sink
))
652 if (path
->sink
&& path
->sink
->power_check
&&
653 path
->sink
->power_check(path
->sink
)) {
659 dapm_clear_walk(w
->codec
);
664 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
665 struct snd_soc_dapm_widget
*b
,
668 if (a
->codec
!= b
->codec
)
669 return (unsigned long)a
- (unsigned long)b
;
670 if (sort
[a
->id
] != sort
[b
->id
])
671 return sort
[a
->id
] - sort
[b
->id
];
672 if (a
->reg
!= b
->reg
)
673 return a
->reg
- b
->reg
;
678 /* Insert a widget in order into a DAPM power sequence. */
679 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
680 struct list_head
*list
,
683 struct snd_soc_dapm_widget
*w
;
685 list_for_each_entry(w
, list
, power_list
)
686 if (dapm_seq_compare(new_widget
, w
, sort
) < 0) {
687 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
691 list_add_tail(&new_widget
->power_list
, list
);
694 /* Apply the coalesced changes from a DAPM sequence */
695 static void dapm_seq_run_coalesced(struct snd_soc_codec
*codec
,
696 struct list_head
*pending
)
698 struct snd_soc_dapm_widget
*w
;
700 unsigned int value
= 0;
701 unsigned int mask
= 0;
702 unsigned int cur_mask
;
704 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
707 list_for_each_entry(w
, pending
, power_list
) {
708 cur_mask
= 1 << w
->shift
;
709 BUG_ON(reg
!= w
->reg
);
720 pop_dbg(codec
->pop_time
,
721 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
722 w
->name
, reg
, value
, mask
);
724 /* power up pre event */
725 if (w
->power
&& w
->event
&&
726 (w
->event_flags
& SND_SOC_DAPM_PRE_PMU
)) {
727 pop_dbg(codec
->pop_time
, "pop test : %s PRE_PMU\n",
729 ret
= w
->event(w
, NULL
, SND_SOC_DAPM_PRE_PMU
);
731 pr_err("%s: pre event failed: %d\n",
735 /* power down pre event */
736 if (!w
->power
&& w
->event
&&
737 (w
->event_flags
& SND_SOC_DAPM_PRE_PMD
)) {
738 pop_dbg(codec
->pop_time
, "pop test : %s PRE_PMD\n",
740 ret
= w
->event(w
, NULL
, SND_SOC_DAPM_PRE_PMD
);
742 pr_err("%s: pre event failed: %d\n",
748 pop_dbg(codec
->pop_time
,
749 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
750 value
, mask
, reg
, codec
->pop_time
);
751 pop_wait(codec
->pop_time
);
752 snd_soc_update_bits(codec
, reg
, mask
, value
);
755 list_for_each_entry(w
, pending
, power_list
) {
756 /* power up post event */
757 if (w
->power
&& w
->event
&&
758 (w
->event_flags
& SND_SOC_DAPM_POST_PMU
)) {
759 pop_dbg(codec
->pop_time
, "pop test : %s POST_PMU\n",
762 NULL
, SND_SOC_DAPM_POST_PMU
);
764 pr_err("%s: post event failed: %d\n",
768 /* power down post event */
769 if (!w
->power
&& w
->event
&&
770 (w
->event_flags
& SND_SOC_DAPM_POST_PMD
)) {
771 pop_dbg(codec
->pop_time
, "pop test : %s POST_PMD\n",
773 ret
= w
->event(w
, NULL
, SND_SOC_DAPM_POST_PMD
);
775 pr_err("%s: post event failed: %d\n",
781 /* Apply a DAPM power sequence.
783 * We walk over a pre-sorted list of widgets to apply power to. In
784 * order to minimise the number of writes to the device required
785 * multiple widgets will be updated in a single write where possible.
786 * Currently anything that requires more than a single write is not
789 static void dapm_seq_run(struct snd_soc_codec
*codec
, struct list_head
*list
,
790 int event
, int sort
[])
792 struct snd_soc_dapm_widget
*w
, *n
;
795 int cur_reg
= SND_SOC_NOPM
;
798 list_for_each_entry_safe(w
, n
, list
, power_list
) {
801 /* Do we need to apply any queued changes? */
802 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
) {
803 if (!list_empty(&pending
))
804 dapm_seq_run_coalesced(codec
, &pending
);
806 INIT_LIST_HEAD(&pending
);
808 cur_reg
= SND_SOC_NOPM
;
812 case snd_soc_dapm_pre
:
814 list_for_each_entry_safe_continue(w
, n
, list
,
817 if (event
== SND_SOC_DAPM_STREAM_START
)
819 NULL
, SND_SOC_DAPM_PRE_PMU
);
820 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
822 NULL
, SND_SOC_DAPM_PRE_PMD
);
825 case snd_soc_dapm_post
:
827 list_for_each_entry_safe_continue(w
, n
, list
,
830 if (event
== SND_SOC_DAPM_STREAM_START
)
832 NULL
, SND_SOC_DAPM_POST_PMU
);
833 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
835 NULL
, SND_SOC_DAPM_POST_PMD
);
838 case snd_soc_dapm_input
:
839 case snd_soc_dapm_output
:
840 case snd_soc_dapm_hp
:
841 case snd_soc_dapm_mic
:
842 case snd_soc_dapm_line
:
843 case snd_soc_dapm_spk
:
844 /* No register support currently */
845 ret
= dapm_generic_apply_power(w
);
849 /* Queue it up for application */
850 cur_sort
= sort
[w
->id
];
852 list_move(&w
->power_list
, &pending
);
857 pr_err("Failed to apply widget power: %d\n",
861 if (!list_empty(&pending
))
862 dapm_seq_run_coalesced(codec
, &pending
);
866 * Scan each dapm widget for complete audio path.
867 * A complete path is a route that has valid endpoints i.e.:-
869 * o DAC to output pin.
870 * o Input Pin to ADC.
871 * o Input pin to Output pin (bypass, sidetone)
872 * o DAC to ADC (loopback).
874 static int dapm_power_widgets(struct snd_soc_codec
*codec
, int event
)
876 struct snd_soc_device
*socdev
= codec
->socdev
;
877 struct snd_soc_dapm_widget
*w
;
879 LIST_HEAD(down_list
);
884 /* Check which widgets we need to power and store them in
885 * lists indicating if they should be powered up or down.
887 list_for_each_entry(w
, &codec
->dapm_widgets
, list
) {
889 case snd_soc_dapm_pre
:
890 dapm_seq_insert(w
, &down_list
, dapm_down_seq
);
892 case snd_soc_dapm_post
:
893 dapm_seq_insert(w
, &up_list
, dapm_up_seq
);
900 /* If we're suspending then pull down all the
903 case SND_SOC_DAPM_STREAM_SUSPEND
:
909 power
= w
->power_check(w
);
917 if (w
->power
== power
)
921 dapm_seq_insert(w
, &up_list
, dapm_up_seq
);
923 dapm_seq_insert(w
, &down_list
, dapm_down_seq
);
930 /* If there are no DAPM widgets then try to figure out power from the
933 if (list_empty(&codec
->dapm_widgets
)) {
935 case SND_SOC_DAPM_STREAM_START
:
936 case SND_SOC_DAPM_STREAM_RESUME
:
939 case SND_SOC_DAPM_STREAM_SUSPEND
:
942 case SND_SOC_DAPM_STREAM_NOP
:
943 switch (codec
->bias_level
) {
944 case SND_SOC_BIAS_STANDBY
:
945 case SND_SOC_BIAS_OFF
:
958 if (sys_power
&& codec
->bias_level
== SND_SOC_BIAS_OFF
) {
959 ret
= snd_soc_dapm_set_bias_level(socdev
,
960 SND_SOC_BIAS_STANDBY
);
962 pr_err("Failed to turn on bias: %d\n", ret
);
965 /* If we're changing to all on or all off then prepare */
966 if ((sys_power
&& codec
->bias_level
== SND_SOC_BIAS_STANDBY
) ||
967 (!sys_power
&& codec
->bias_level
== SND_SOC_BIAS_ON
)) {
968 ret
= snd_soc_dapm_set_bias_level(socdev
,
969 SND_SOC_BIAS_PREPARE
);
971 pr_err("Failed to prepare bias: %d\n", ret
);
974 /* Power down widgets first; try to avoid amplifying pops. */
975 dapm_seq_run(codec
, &down_list
, event
, dapm_down_seq
);
978 dapm_seq_run(codec
, &up_list
, event
, dapm_up_seq
);
980 /* If we just powered the last thing off drop to standby bias */
981 if (codec
->bias_level
== SND_SOC_BIAS_PREPARE
&& !sys_power
) {
982 ret
= snd_soc_dapm_set_bias_level(socdev
,
983 SND_SOC_BIAS_STANDBY
);
985 pr_err("Failed to apply standby bias: %d\n", ret
);
988 /* If we're in standby and can support bias off then do that */
989 if (codec
->bias_level
== SND_SOC_BIAS_STANDBY
&&
990 codec
->idle_bias_off
) {
991 ret
= snd_soc_dapm_set_bias_level(socdev
, SND_SOC_BIAS_OFF
);
993 pr_err("Failed to turn off bias: %d\n", ret
);
996 /* If we just powered up then move to active bias */
997 if (codec
->bias_level
== SND_SOC_BIAS_PREPARE
&& sys_power
) {
998 ret
= snd_soc_dapm_set_bias_level(socdev
,
1001 pr_err("Failed to apply active bias: %d\n", ret
);
1004 pop_dbg(codec
->pop_time
, "DAPM sequencing finished, waiting %dms\n",
1006 pop_wait(codec
->pop_time
);
1011 #ifdef CONFIG_DEBUG_FS
1012 static int dapm_widget_power_open_file(struct inode
*inode
, struct file
*file
)
1014 file
->private_data
= inode
->i_private
;
1018 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1019 char __user
*user_buf
,
1020 size_t count
, loff_t
*ppos
)
1022 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1026 struct snd_soc_dapm_path
*p
= NULL
;
1028 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1032 in
= is_connected_input_ep(w
);
1033 dapm_clear_walk(w
->codec
);
1034 out
= is_connected_output_ep(w
);
1035 dapm_clear_walk(w
->codec
);
1037 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s in %d out %d",
1038 w
->name
, w
->power
? "On" : "Off", in
, out
);
1041 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1042 " - R%d(0x%x) bit %d",
1043 w
->reg
, w
->reg
, w
->shift
);
1045 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1048 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1050 w
->active
? "active" : "inactive");
1052 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1053 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1057 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1059 p
->name
? p
->name
: "static",
1062 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1063 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1067 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1069 p
->name
? p
->name
: "static",
1073 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1079 static const struct file_operations dapm_widget_power_fops
= {
1080 .open
= dapm_widget_power_open_file
,
1081 .read
= dapm_widget_power_read_file
,
1084 void snd_soc_dapm_debugfs_init(struct snd_soc_codec
*codec
)
1086 struct snd_soc_dapm_widget
*w
;
1089 if (!codec
->debugfs_dapm
)
1092 list_for_each_entry(w
, &codec
->dapm_widgets
, list
) {
1096 d
= debugfs_create_file(w
->name
, 0444,
1097 codec
->debugfs_dapm
, w
,
1098 &dapm_widget_power_fops
);
1101 "ASoC: Failed to create %s debugfs file\n",
1106 void snd_soc_dapm_debugfs_init(struct snd_soc_codec
*codec
)
1111 /* test and update the power status of a mux widget */
1112 static int dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1113 struct snd_kcontrol
*kcontrol
, int change
,
1114 int mux
, struct soc_enum
*e
)
1116 struct snd_soc_dapm_path
*path
;
1119 if (widget
->id
!= snd_soc_dapm_mux
&&
1120 widget
->id
!= snd_soc_dapm_value_mux
)
1126 /* find dapm widget path assoc with kcontrol */
1127 list_for_each_entry(path
, &widget
->codec
->dapm_paths
, list
) {
1128 if (path
->kcontrol
!= kcontrol
)
1131 if (!path
->name
|| !e
->texts
[mux
])
1135 /* we now need to match the string in the enum to the path */
1136 if (!(strcmp(path
->name
, e
->texts
[mux
])))
1137 path
->connect
= 1; /* new connection */
1139 path
->connect
= 0; /* old connection must be powered down */
1143 dapm_power_widgets(widget
->codec
, SND_SOC_DAPM_STREAM_NOP
);
1148 /* test and update the power status of a mixer or switch widget */
1149 static int dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1150 struct snd_kcontrol
*kcontrol
, int connect
)
1152 struct snd_soc_dapm_path
*path
;
1155 if (widget
->id
!= snd_soc_dapm_mixer
&&
1156 widget
->id
!= snd_soc_dapm_mixer_named_ctl
&&
1157 widget
->id
!= snd_soc_dapm_switch
)
1160 /* find dapm widget path assoc with kcontrol */
1161 list_for_each_entry(path
, &widget
->codec
->dapm_paths
, list
) {
1162 if (path
->kcontrol
!= kcontrol
)
1165 /* found, now check type */
1167 path
->connect
= connect
;
1172 dapm_power_widgets(widget
->codec
, SND_SOC_DAPM_STREAM_NOP
);
1177 /* show dapm widget status in sys fs */
1178 static ssize_t
dapm_widget_show(struct device
*dev
,
1179 struct device_attribute
*attr
, char *buf
)
1181 struct snd_soc_device
*devdata
= dev_get_drvdata(dev
);
1182 struct snd_soc_codec
*codec
= devdata
->card
->codec
;
1183 struct snd_soc_dapm_widget
*w
;
1185 char *state
= "not set";
1187 list_for_each_entry(w
, &codec
->dapm_widgets
, list
) {
1189 /* only display widgets that burnm power */
1191 case snd_soc_dapm_hp
:
1192 case snd_soc_dapm_mic
:
1193 case snd_soc_dapm_spk
:
1194 case snd_soc_dapm_line
:
1195 case snd_soc_dapm_micbias
:
1196 case snd_soc_dapm_dac
:
1197 case snd_soc_dapm_adc
:
1198 case snd_soc_dapm_pga
:
1199 case snd_soc_dapm_mixer
:
1200 case snd_soc_dapm_mixer_named_ctl
:
1201 case snd_soc_dapm_supply
:
1203 count
+= sprintf(buf
+ count
, "%s: %s\n",
1204 w
->name
, w
->power
? "On":"Off");
1211 switch (codec
->bias_level
) {
1212 case SND_SOC_BIAS_ON
:
1215 case SND_SOC_BIAS_PREPARE
:
1218 case SND_SOC_BIAS_STANDBY
:
1221 case SND_SOC_BIAS_OFF
:
1225 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
1230 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
1232 int snd_soc_dapm_sys_add(struct device
*dev
)
1234 return device_create_file(dev
, &dev_attr_dapm_widget
);
1237 static void snd_soc_dapm_sys_remove(struct device
*dev
)
1239 device_remove_file(dev
, &dev_attr_dapm_widget
);
1242 /* free all dapm widgets and resources */
1243 static void dapm_free_widgets(struct snd_soc_codec
*codec
)
1245 struct snd_soc_dapm_widget
*w
, *next_w
;
1246 struct snd_soc_dapm_path
*p
, *next_p
;
1248 list_for_each_entry_safe(w
, next_w
, &codec
->dapm_widgets
, list
) {
1253 list_for_each_entry_safe(p
, next_p
, &codec
->dapm_paths
, list
) {
1255 kfree(p
->long_name
);
1260 static int snd_soc_dapm_set_pin(struct snd_soc_codec
*codec
,
1261 const char *pin
, int status
)
1263 struct snd_soc_dapm_widget
*w
;
1265 list_for_each_entry(w
, &codec
->dapm_widgets
, list
) {
1266 if (!strcmp(w
->name
, pin
)) {
1267 pr_debug("dapm: %s: pin %s\n", codec
->name
, pin
);
1268 w
->connected
= status
;
1269 /* Allow disabling of forced pins */
1276 pr_err("dapm: %s: configuring unknown pin %s\n", codec
->name
, pin
);
1281 * snd_soc_dapm_sync - scan and power dapm paths
1282 * @codec: audio codec
1284 * Walks all dapm audio paths and powers widgets according to their
1285 * stream or path usage.
1287 * Returns 0 for success.
1289 int snd_soc_dapm_sync(struct snd_soc_codec
*codec
)
1291 return dapm_power_widgets(codec
, SND_SOC_DAPM_STREAM_NOP
);
1293 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
1295 static int snd_soc_dapm_add_route(struct snd_soc_codec
*codec
,
1296 const struct snd_soc_dapm_route
*route
)
1298 struct snd_soc_dapm_path
*path
;
1299 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
1300 const char *sink
= route
->sink
;
1301 const char *control
= route
->control
;
1302 const char *source
= route
->source
;
1305 /* find src and dest widgets */
1306 list_for_each_entry(w
, &codec
->dapm_widgets
, list
) {
1308 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
1312 if (!wsource
&& !(strcmp(w
->name
, source
))) {
1317 if (wsource
== NULL
|| wsink
== NULL
)
1320 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
1324 path
->source
= wsource
;
1326 path
->connected
= route
->connected
;
1327 INIT_LIST_HEAD(&path
->list
);
1328 INIT_LIST_HEAD(&path
->list_source
);
1329 INIT_LIST_HEAD(&path
->list_sink
);
1331 /* check for external widgets */
1332 if (wsink
->id
== snd_soc_dapm_input
) {
1333 if (wsource
->id
== snd_soc_dapm_micbias
||
1334 wsource
->id
== snd_soc_dapm_mic
||
1335 wsource
->id
== snd_soc_dapm_line
||
1336 wsource
->id
== snd_soc_dapm_output
)
1339 if (wsource
->id
== snd_soc_dapm_output
) {
1340 if (wsink
->id
== snd_soc_dapm_spk
||
1341 wsink
->id
== snd_soc_dapm_hp
||
1342 wsink
->id
== snd_soc_dapm_line
||
1343 wsink
->id
== snd_soc_dapm_input
)
1347 /* connect static paths */
1348 if (control
== NULL
) {
1349 list_add(&path
->list
, &codec
->dapm_paths
);
1350 list_add(&path
->list_sink
, &wsink
->sources
);
1351 list_add(&path
->list_source
, &wsource
->sinks
);
1356 /* connect dynamic paths */
1358 case snd_soc_dapm_adc
:
1359 case snd_soc_dapm_dac
:
1360 case snd_soc_dapm_pga
:
1361 case snd_soc_dapm_input
:
1362 case snd_soc_dapm_output
:
1363 case snd_soc_dapm_micbias
:
1364 case snd_soc_dapm_vmid
:
1365 case snd_soc_dapm_pre
:
1366 case snd_soc_dapm_post
:
1367 case snd_soc_dapm_supply
:
1368 case snd_soc_dapm_aif_in
:
1369 case snd_soc_dapm_aif_out
:
1370 list_add(&path
->list
, &codec
->dapm_paths
);
1371 list_add(&path
->list_sink
, &wsink
->sources
);
1372 list_add(&path
->list_source
, &wsource
->sinks
);
1375 case snd_soc_dapm_mux
:
1376 case snd_soc_dapm_value_mux
:
1377 ret
= dapm_connect_mux(codec
, wsource
, wsink
, path
, control
,
1378 &wsink
->kcontrols
[0]);
1382 case snd_soc_dapm_switch
:
1383 case snd_soc_dapm_mixer
:
1384 case snd_soc_dapm_mixer_named_ctl
:
1385 ret
= dapm_connect_mixer(codec
, wsource
, wsink
, path
, control
);
1389 case snd_soc_dapm_hp
:
1390 case snd_soc_dapm_mic
:
1391 case snd_soc_dapm_line
:
1392 case snd_soc_dapm_spk
:
1393 list_add(&path
->list
, &codec
->dapm_paths
);
1394 list_add(&path
->list_sink
, &wsink
->sources
);
1395 list_add(&path
->list_source
, &wsource
->sinks
);
1402 printk(KERN_WARNING
"asoc: no dapm match for %s --> %s --> %s\n", source
,
1409 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
1411 * @route: audio routes
1412 * @num: number of routes
1414 * Connects 2 dapm widgets together via a named audio path. The sink is
1415 * the widget receiving the audio signal, whilst the source is the sender
1416 * of the audio signal.
1418 * Returns 0 for success else error. On error all resources can be freed
1419 * with a call to snd_soc_card_free().
1421 int snd_soc_dapm_add_routes(struct snd_soc_codec
*codec
,
1422 const struct snd_soc_dapm_route
*route
, int num
)
1426 for (i
= 0; i
< num
; i
++) {
1427 ret
= snd_soc_dapm_add_route(codec
, route
);
1429 printk(KERN_ERR
"Failed to add route %s->%s\n",
1439 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
1442 * snd_soc_dapm_new_widgets - add new dapm widgets
1443 * @codec: audio codec
1445 * Checks the codec for any new dapm widgets and creates them if found.
1447 * Returns 0 for success.
1449 int snd_soc_dapm_new_widgets(struct snd_soc_codec
*codec
)
1451 struct snd_soc_dapm_widget
*w
;
1453 list_for_each_entry(w
, &codec
->dapm_widgets
, list
)
1459 case snd_soc_dapm_switch
:
1460 case snd_soc_dapm_mixer
:
1461 case snd_soc_dapm_mixer_named_ctl
:
1462 w
->power_check
= dapm_generic_check_power
;
1463 dapm_new_mixer(codec
, w
);
1465 case snd_soc_dapm_mux
:
1466 case snd_soc_dapm_value_mux
:
1467 w
->power_check
= dapm_generic_check_power
;
1468 dapm_new_mux(codec
, w
);
1470 case snd_soc_dapm_adc
:
1471 case snd_soc_dapm_aif_out
:
1472 w
->power_check
= dapm_adc_check_power
;
1474 case snd_soc_dapm_dac
:
1475 case snd_soc_dapm_aif_in
:
1476 w
->power_check
= dapm_dac_check_power
;
1478 case snd_soc_dapm_pga
:
1479 w
->power_check
= dapm_generic_check_power
;
1480 dapm_new_pga(codec
, w
);
1482 case snd_soc_dapm_input
:
1483 case snd_soc_dapm_output
:
1484 case snd_soc_dapm_micbias
:
1485 case snd_soc_dapm_spk
:
1486 case snd_soc_dapm_hp
:
1487 case snd_soc_dapm_mic
:
1488 case snd_soc_dapm_line
:
1489 w
->power_check
= dapm_generic_check_power
;
1491 case snd_soc_dapm_supply
:
1492 w
->power_check
= dapm_supply_check_power
;
1493 case snd_soc_dapm_vmid
:
1494 case snd_soc_dapm_pre
:
1495 case snd_soc_dapm_post
:
1501 dapm_power_widgets(codec
, SND_SOC_DAPM_STREAM_NOP
);
1504 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
1507 * snd_soc_dapm_get_volsw - dapm mixer get callback
1508 * @kcontrol: mixer control
1509 * @ucontrol: control element information
1511 * Callback to get the value of a dapm mixer control.
1513 * Returns 0 for success.
1515 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
1516 struct snd_ctl_elem_value
*ucontrol
)
1518 struct snd_soc_dapm_widget
*widget
= snd_kcontrol_chip(kcontrol
);
1519 struct soc_mixer_control
*mc
=
1520 (struct soc_mixer_control
*)kcontrol
->private_value
;
1521 unsigned int reg
= mc
->reg
;
1522 unsigned int shift
= mc
->shift
;
1523 unsigned int rshift
= mc
->rshift
;
1525 unsigned int invert
= mc
->invert
;
1526 unsigned int mask
= (1 << fls(max
)) - 1;
1528 ucontrol
->value
.integer
.value
[0] =
1529 (snd_soc_read(widget
->codec
, reg
) >> shift
) & mask
;
1530 if (shift
!= rshift
)
1531 ucontrol
->value
.integer
.value
[1] =
1532 (snd_soc_read(widget
->codec
, reg
) >> rshift
) & mask
;
1534 ucontrol
->value
.integer
.value
[0] =
1535 max
- ucontrol
->value
.integer
.value
[0];
1536 if (shift
!= rshift
)
1537 ucontrol
->value
.integer
.value
[1] =
1538 max
- ucontrol
->value
.integer
.value
[1];
1543 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
1546 * snd_soc_dapm_put_volsw - dapm mixer set callback
1547 * @kcontrol: mixer control
1548 * @ucontrol: control element information
1550 * Callback to set the value of a dapm mixer control.
1552 * Returns 0 for success.
1554 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
1555 struct snd_ctl_elem_value
*ucontrol
)
1557 struct snd_soc_dapm_widget
*widget
= snd_kcontrol_chip(kcontrol
);
1558 struct soc_mixer_control
*mc
=
1559 (struct soc_mixer_control
*)kcontrol
->private_value
;
1560 unsigned int reg
= mc
->reg
;
1561 unsigned int shift
= mc
->shift
;
1562 unsigned int rshift
= mc
->rshift
;
1564 unsigned int mask
= (1 << fls(max
)) - 1;
1565 unsigned int invert
= mc
->invert
;
1566 unsigned int val
, val2
, val_mask
;
1570 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
1574 val_mask
= mask
<< shift
;
1576 if (shift
!= rshift
) {
1577 val2
= (ucontrol
->value
.integer
.value
[1] & mask
);
1580 val_mask
|= mask
<< rshift
;
1581 val
|= val2
<< rshift
;
1584 mutex_lock(&widget
->codec
->mutex
);
1585 widget
->value
= val
;
1587 if (snd_soc_test_bits(widget
->codec
, reg
, val_mask
, val
)) {
1589 /* new connection */
1590 connect
= invert
? 0:1;
1592 /* old connection must be powered down */
1593 connect
= invert
? 1:0;
1595 dapm_mixer_update_power(widget
, kcontrol
, connect
);
1598 if (widget
->event
) {
1599 if (widget
->event_flags
& SND_SOC_DAPM_PRE_REG
) {
1600 ret
= widget
->event(widget
, kcontrol
,
1601 SND_SOC_DAPM_PRE_REG
);
1607 ret
= snd_soc_update_bits(widget
->codec
, reg
, val_mask
, val
);
1608 if (widget
->event_flags
& SND_SOC_DAPM_POST_REG
)
1609 ret
= widget
->event(widget
, kcontrol
,
1610 SND_SOC_DAPM_POST_REG
);
1612 ret
= snd_soc_update_bits(widget
->codec
, reg
, val_mask
, val
);
1615 mutex_unlock(&widget
->codec
->mutex
);
1618 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
1621 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
1622 * @kcontrol: mixer control
1623 * @ucontrol: control element information
1625 * Callback to get the value of a dapm enumerated double mixer control.
1627 * Returns 0 for success.
1629 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
1630 struct snd_ctl_elem_value
*ucontrol
)
1632 struct snd_soc_dapm_widget
*widget
= snd_kcontrol_chip(kcontrol
);
1633 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1634 unsigned int val
, bitmask
;
1636 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
1638 val
= snd_soc_read(widget
->codec
, e
->reg
);
1639 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & (bitmask
- 1);
1640 if (e
->shift_l
!= e
->shift_r
)
1641 ucontrol
->value
.enumerated
.item
[1] =
1642 (val
>> e
->shift_r
) & (bitmask
- 1);
1646 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
1649 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
1650 * @kcontrol: mixer control
1651 * @ucontrol: control element information
1653 * Callback to set the value of a dapm enumerated double mixer control.
1655 * Returns 0 for success.
1657 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
1658 struct snd_ctl_elem_value
*ucontrol
)
1660 struct snd_soc_dapm_widget
*widget
= snd_kcontrol_chip(kcontrol
);
1661 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1662 unsigned int val
, mux
, change
;
1663 unsigned int mask
, bitmask
;
1666 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
1668 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
1670 mux
= ucontrol
->value
.enumerated
.item
[0];
1671 val
= mux
<< e
->shift_l
;
1672 mask
= (bitmask
- 1) << e
->shift_l
;
1673 if (e
->shift_l
!= e
->shift_r
) {
1674 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
1676 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
1677 mask
|= (bitmask
- 1) << e
->shift_r
;
1680 mutex_lock(&widget
->codec
->mutex
);
1681 widget
->value
= val
;
1682 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
1683 dapm_mux_update_power(widget
, kcontrol
, change
, mux
, e
);
1685 if (widget
->event_flags
& SND_SOC_DAPM_PRE_REG
) {
1686 ret
= widget
->event(widget
,
1687 kcontrol
, SND_SOC_DAPM_PRE_REG
);
1692 ret
= snd_soc_update_bits(widget
->codec
, e
->reg
, mask
, val
);
1694 if (widget
->event_flags
& SND_SOC_DAPM_POST_REG
)
1695 ret
= widget
->event(widget
,
1696 kcontrol
, SND_SOC_DAPM_POST_REG
);
1699 mutex_unlock(&widget
->codec
->mutex
);
1702 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
1705 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
1706 * @kcontrol: mixer control
1707 * @ucontrol: control element information
1709 * Returns 0 for success.
1711 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
1712 struct snd_ctl_elem_value
*ucontrol
)
1714 struct snd_soc_dapm_widget
*widget
= snd_kcontrol_chip(kcontrol
);
1716 ucontrol
->value
.enumerated
.item
[0] = widget
->value
;
1720 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
1723 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
1724 * @kcontrol: mixer control
1725 * @ucontrol: control element information
1727 * Returns 0 for success.
1729 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
1730 struct snd_ctl_elem_value
*ucontrol
)
1732 struct snd_soc_dapm_widget
*widget
= snd_kcontrol_chip(kcontrol
);
1733 struct soc_enum
*e
=
1734 (struct soc_enum
*)kcontrol
->private_value
;
1738 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
1741 mutex_lock(&widget
->codec
->mutex
);
1743 change
= widget
->value
!= ucontrol
->value
.enumerated
.item
[0];
1744 widget
->value
= ucontrol
->value
.enumerated
.item
[0];
1745 dapm_mux_update_power(widget
, kcontrol
, change
, widget
->value
, e
);
1747 mutex_unlock(&widget
->codec
->mutex
);
1750 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
1753 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
1755 * @kcontrol: mixer control
1756 * @ucontrol: control element information
1758 * Callback to get the value of a dapm semi enumerated double mixer control.
1760 * Semi enumerated mixer: the enumerated items are referred as values. Can be
1761 * used for handling bitfield coded enumeration for example.
1763 * Returns 0 for success.
1765 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
1766 struct snd_ctl_elem_value
*ucontrol
)
1768 struct snd_soc_dapm_widget
*widget
= snd_kcontrol_chip(kcontrol
);
1769 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1770 unsigned int reg_val
, val
, mux
;
1772 reg_val
= snd_soc_read(widget
->codec
, e
->reg
);
1773 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
1774 for (mux
= 0; mux
< e
->max
; mux
++) {
1775 if (val
== e
->values
[mux
])
1778 ucontrol
->value
.enumerated
.item
[0] = mux
;
1779 if (e
->shift_l
!= e
->shift_r
) {
1780 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
1781 for (mux
= 0; mux
< e
->max
; mux
++) {
1782 if (val
== e
->values
[mux
])
1785 ucontrol
->value
.enumerated
.item
[1] = mux
;
1790 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
1793 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
1795 * @kcontrol: mixer control
1796 * @ucontrol: control element information
1798 * Callback to set the value of a dapm semi enumerated double mixer control.
1800 * Semi enumerated mixer: the enumerated items are referred as values. Can be
1801 * used for handling bitfield coded enumeration for example.
1803 * Returns 0 for success.
1805 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
1806 struct snd_ctl_elem_value
*ucontrol
)
1808 struct snd_soc_dapm_widget
*widget
= snd_kcontrol_chip(kcontrol
);
1809 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
1810 unsigned int val
, mux
, change
;
1814 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
1816 mux
= ucontrol
->value
.enumerated
.item
[0];
1817 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
1818 mask
= e
->mask
<< e
->shift_l
;
1819 if (e
->shift_l
!= e
->shift_r
) {
1820 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
1822 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
1823 mask
|= e
->mask
<< e
->shift_r
;
1826 mutex_lock(&widget
->codec
->mutex
);
1827 widget
->value
= val
;
1828 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
1829 dapm_mux_update_power(widget
, kcontrol
, change
, mux
, e
);
1831 if (widget
->event_flags
& SND_SOC_DAPM_PRE_REG
) {
1832 ret
= widget
->event(widget
,
1833 kcontrol
, SND_SOC_DAPM_PRE_REG
);
1838 ret
= snd_soc_update_bits(widget
->codec
, e
->reg
, mask
, val
);
1840 if (widget
->event_flags
& SND_SOC_DAPM_POST_REG
)
1841 ret
= widget
->event(widget
,
1842 kcontrol
, SND_SOC_DAPM_POST_REG
);
1845 mutex_unlock(&widget
->codec
->mutex
);
1848 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
1851 * snd_soc_dapm_info_pin_switch - Info for a pin switch
1853 * @kcontrol: mixer control
1854 * @uinfo: control element information
1856 * Callback to provide information about a pin switch control.
1858 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
1859 struct snd_ctl_elem_info
*uinfo
)
1861 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
1863 uinfo
->value
.integer
.min
= 0;
1864 uinfo
->value
.integer
.max
= 1;
1868 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
1871 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
1873 * @kcontrol: mixer control
1876 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
1877 struct snd_ctl_elem_value
*ucontrol
)
1879 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1880 const char *pin
= (const char *)kcontrol
->private_value
;
1882 mutex_lock(&codec
->mutex
);
1884 ucontrol
->value
.integer
.value
[0] =
1885 snd_soc_dapm_get_pin_status(codec
, pin
);
1887 mutex_unlock(&codec
->mutex
);
1891 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
1894 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
1896 * @kcontrol: mixer control
1899 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
1900 struct snd_ctl_elem_value
*ucontrol
)
1902 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
1903 const char *pin
= (const char *)kcontrol
->private_value
;
1905 mutex_lock(&codec
->mutex
);
1907 if (ucontrol
->value
.integer
.value
[0])
1908 snd_soc_dapm_enable_pin(codec
, pin
);
1910 snd_soc_dapm_disable_pin(codec
, pin
);
1912 snd_soc_dapm_sync(codec
);
1914 mutex_unlock(&codec
->mutex
);
1918 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
1921 * snd_soc_dapm_new_control - create new dapm control
1922 * @codec: audio codec
1923 * @widget: widget template
1925 * Creates a new dapm control based upon the template.
1927 * Returns 0 for success else error.
1929 int snd_soc_dapm_new_control(struct snd_soc_codec
*codec
,
1930 const struct snd_soc_dapm_widget
*widget
)
1932 struct snd_soc_dapm_widget
*w
;
1934 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
1938 INIT_LIST_HEAD(&w
->sources
);
1939 INIT_LIST_HEAD(&w
->sinks
);
1940 INIT_LIST_HEAD(&w
->list
);
1941 list_add(&w
->list
, &codec
->dapm_widgets
);
1943 /* machine layer set ups unconnected pins and insertions */
1947 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control
);
1950 * snd_soc_dapm_new_controls - create new dapm controls
1951 * @codec: audio codec
1952 * @widget: widget array
1953 * @num: number of widgets
1955 * Creates new DAPM controls based upon the templates.
1957 * Returns 0 for success else error.
1959 int snd_soc_dapm_new_controls(struct snd_soc_codec
*codec
,
1960 const struct snd_soc_dapm_widget
*widget
,
1965 for (i
= 0; i
< num
; i
++) {
1966 ret
= snd_soc_dapm_new_control(codec
, widget
);
1969 "ASoC: Failed to create DAPM control %s: %d\n",
1977 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
1981 * snd_soc_dapm_stream_event - send a stream event to the dapm core
1982 * @codec: audio codec
1983 * @stream: stream name
1984 * @event: stream event
1986 * Sends a stream event to the dapm core. The core then makes any
1987 * necessary widget power changes.
1989 * Returns 0 for success else error.
1991 int snd_soc_dapm_stream_event(struct snd_soc_codec
*codec
,
1992 char *stream
, int event
)
1994 struct snd_soc_dapm_widget
*w
;
1999 mutex_lock(&codec
->mutex
);
2000 list_for_each_entry(w
, &codec
->dapm_widgets
, list
)
2004 pr_debug("widget %s\n %s stream %s event %d\n",
2005 w
->name
, w
->sname
, stream
, event
);
2006 if (strstr(w
->sname
, stream
)) {
2008 case SND_SOC_DAPM_STREAM_START
:
2011 case SND_SOC_DAPM_STREAM_STOP
:
2014 case SND_SOC_DAPM_STREAM_SUSPEND
:
2019 case SND_SOC_DAPM_STREAM_RESUME
:
2025 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
2027 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
2033 dapm_power_widgets(codec
, event
);
2034 mutex_unlock(&codec
->mutex
);
2037 EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_event
);
2040 * snd_soc_dapm_enable_pin - enable pin.
2044 * Enables input/output pin and its parents or children widgets iff there is
2045 * a valid audio route and active audio stream.
2046 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2047 * do any widget power switching.
2049 int snd_soc_dapm_enable_pin(struct snd_soc_codec
*codec
, const char *pin
)
2051 return snd_soc_dapm_set_pin(codec
, pin
, 1);
2053 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
2056 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
2060 * Enables input/output pin regardless of any other state. This is
2061 * intended for use with microphone bias supplies used in microphone
2064 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2065 * do any widget power switching.
2067 int snd_soc_dapm_force_enable_pin(struct snd_soc_codec
*codec
, const char *pin
)
2069 struct snd_soc_dapm_widget
*w
;
2071 list_for_each_entry(w
, &codec
->dapm_widgets
, list
) {
2072 if (!strcmp(w
->name
, pin
)) {
2073 pr_debug("dapm: %s: pin %s\n", codec
->name
, pin
);
2080 pr_err("dapm: %s: configuring unknown pin %s\n", codec
->name
, pin
);
2083 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
2086 * snd_soc_dapm_disable_pin - disable pin.
2090 * Disables input/output pin and its parents or children widgets.
2091 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2092 * do any widget power switching.
2094 int snd_soc_dapm_disable_pin(struct snd_soc_codec
*codec
, const char *pin
)
2096 return snd_soc_dapm_set_pin(codec
, pin
, 0);
2098 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
2101 * snd_soc_dapm_nc_pin - permanently disable pin.
2105 * Marks the specified pin as being not connected, disabling it along
2106 * any parent or child widgets. At present this is identical to
2107 * snd_soc_dapm_disable_pin() but in future it will be extended to do
2108 * additional things such as disabling controls which only affect
2109 * paths through the pin.
2111 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
2112 * do any widget power switching.
2114 int snd_soc_dapm_nc_pin(struct snd_soc_codec
*codec
, const char *pin
)
2116 return snd_soc_dapm_set_pin(codec
, pin
, 0);
2118 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
2121 * snd_soc_dapm_get_pin_status - get audio pin status
2122 * @codec: audio codec
2123 * @pin: audio signal pin endpoint (or start point)
2125 * Get audio pin status - connected or disconnected.
2127 * Returns 1 for connected otherwise 0.
2129 int snd_soc_dapm_get_pin_status(struct snd_soc_codec
*codec
, const char *pin
)
2131 struct snd_soc_dapm_widget
*w
;
2133 list_for_each_entry(w
, &codec
->dapm_widgets
, list
) {
2134 if (!strcmp(w
->name
, pin
))
2135 return w
->connected
;
2140 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
2143 * snd_soc_dapm_free - free dapm resources
2144 * @socdev: SoC device
2146 * Free all dapm widgets and resources.
2148 void snd_soc_dapm_free(struct snd_soc_device
*socdev
)
2150 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
2152 snd_soc_dapm_sys_remove(socdev
->dev
);
2153 dapm_free_widgets(codec
);
2155 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
2158 * snd_soc_dapm_shutdown - callback for system shutdown
2160 void snd_soc_dapm_shutdown(struct snd_soc_device
*socdev
)
2162 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
2163 struct snd_soc_dapm_widget
*w
;
2164 LIST_HEAD(down_list
);
2167 list_for_each_entry(w
, &codec
->dapm_widgets
, list
) {
2169 dapm_seq_insert(w
, &down_list
, dapm_down_seq
);
2175 /* If there were no widgets to power down we're already in
2179 snd_soc_dapm_set_bias_level(socdev
, SND_SOC_BIAS_PREPARE
);
2180 dapm_seq_run(codec
, &down_list
, 0, dapm_down_seq
);
2181 snd_soc_dapm_set_bias_level(socdev
, SND_SOC_BIAS_STANDBY
);
2184 snd_soc_dapm_set_bias_level(socdev
, SND_SOC_BIAS_OFF
);
2187 /* Module information */
2188 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
2189 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
2190 MODULE_LICENSE("GPL");