ASoC: Take a pm_runtime reference on DAPM devices that are enabled
authorMark Brown <broonie@opensource.wolfsonmicro.com>
Mon, 5 Dec 2011 15:17:06 +0000 (15:17 +0000)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Thu, 8 Dec 2011 01:22:36 +0000 (09:22 +0800)
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

index 6bb327e..e174d08 100644 (file)
@@ -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 */