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 --- sound/soc/soc-dapm.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index f47e869..1a9fa47 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -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> @@ -1213,6 +1214,9 @@ 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, @@ -1252,6 +1256,9 @@ 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 */