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ASoC: Take a pm_runtime reference on DAPM devices that are enabled 

As for PCMs take a runtime power management reference to devices that are
in a non-off bias, avoiding the need to do this in individual drivers.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
hifive-unleashed-5.1
Mark Brown 2011-12-05 15:17:06 +00:00
parent beaff340e0
commit f1aac484f7
1 changed files with 7 additions and 0 deletions
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7
sound/soc/soc-dapm.c
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@ -39,6 +39,7 @@
#include <linux/platform_device.h>
#include <linux/jiffies.h>
#include <linux/debugfs.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
@ -1206,6 +1207,9 @@ static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
/* If we're off and we're not supposed to be go into STANDBY */
if (d->bias_level == SND_SOC_BIAS_OFF &&
d->target_bias_level != SND_SOC_BIAS_OFF) {
if (d->dev)
pm_runtime_get_sync(d->dev);
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
if (ret != 0)
dev_err(d->dev,
@ -1245,6 +1249,9 @@ static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
if (ret != 0)
dev_err(d->dev, "Failed to turn off bias: %d\n", ret);
if (d->dev)
pm_runtime_put_sync(d->dev);
}
/* If we just powered up then move to active bias */