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ASoC: dapm: Ensure bypass paths are suspended and resumed 

Since bypass paths aren't part of DAPM streams and we may not have any
DAPM streams there may not be anything that triggers a DAPM sync for
them. Mark all input and output widgets as dirty and then sync to do so
at the end of suspend and resume.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
This commit is contained in:
Mark Brown 2012-08-31 17:38:32 -07:00
parent e5ec69da24
commit e2d32ff6ce
3 changed files with 31 additions and 0 deletions
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1
include/sound/soc-dapm.h
View File

@ -412,6 +412,7 @@ void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec);
/* Mostly internal - should not normally be used */
void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason);
void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm);
/* dapm path query */
int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,

8
sound/soc/soc-core.c
View File

@ -609,6 +609,10 @@ int snd_soc_suspend(struct device *dev)
SND_SOC_DAPM_STREAM_SUSPEND);
}
/* Recheck all analogue paths too */
dapm_mark_io_dirty(&card->dapm);
snd_soc_dapm_sync(&card->dapm);
/* suspend all CODECs */
list_for_each_entry(codec, &card->codec_dev_list, card_list) {
/* If there are paths active then the CODEC will be held with
@ -756,6 +760,10 @@ static void soc_resume_deferred(struct work_struct *work)
/* userspace can access us now we are back as we were before */
snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0);
/* Recheck all analogue paths too */
dapm_mark_io_dirty(&card->dapm);
snd_soc_dapm_sync(&card->dapm);
}
/* powers up audio subsystem after a suspend */

22
sound/soc/soc-dapm.c
View File

@ -141,6 +141,28 @@ void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
}
EXPORT_SYMBOL_GPL(dapm_mark_dirty);
void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
{
struct snd_soc_card *card = dapm->card;
struct snd_soc_dapm_widget *w;
mutex_lock(&card->dapm_mutex);
list_for_each_entry(w, &card->widgets, list) {
switch (w->id) {
case snd_soc_dapm_input:
case snd_soc_dapm_output:
dapm_mark_dirty(w, "Rechecking inputs and outputs");
break;
default:
break;
}
}
mutex_unlock(&card->dapm_mutex);
}
EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
/* create a new dapm widget */
static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
const struct snd_soc_dapm_widget *_widget)