[alsa-devel] [PATCH 3/7] ASoC: max98090: Reset codec on resume
Jarkko Nikula
jarkko.nikula at linux.intel.com
Fri May 16 15:55:21 CEST 2014
From: Liam Girdwood <liam.r.girdwood at linux.intel.com>
Make sure we reset codec and clear any IRQs on resume. This matches
the init sequence in probe.
Signed-off-by: Liam Girdwood <liam.r.girdwood at linux.intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula at linux.intel.com>
---
sound/soc/codecs/max98090.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c
index 4accf9ba447e..b3f447cc050c 100644
--- a/sound/soc/codecs/max98090.c
+++ b/sound/soc/codecs/max98090.c
@@ -2392,9 +2392,32 @@ static int max98090_runtime_suspend(struct device *dev)
}
#endif
+#ifdef CONFIG_PM
+static int max98090_resume(struct device *dev)
+{
+ struct max98090_priv *max98090 = dev_get_drvdata(dev);
+ unsigned int status;
+
+ max98090_reset(max98090);
+
+ /* clear IRQ status */
+ regmap_read(max98090->regmap, M98090_REG_DEVICE_STATUS, &status);
+
+ regcache_sync(max98090->regmap);
+
+ return 0;
+}
+
+static int max98090_suspend(struct device *dev)
+{
+ return 0;
+}
+#endif
+
static const struct dev_pm_ops max98090_pm = {
SET_RUNTIME_PM_OPS(max98090_runtime_suspend,
max98090_runtime_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(max98090_suspend, max98090_resume)
};
static const struct i2c_device_id max98090_i2c_id[] = {
--
2.0.0.rc0
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