From: Bard Liao <bardliao@realtek.com>
Date: Mon, 15 Dec 2014 07:42:33 +0000 (+0800)
Subject: ASoC: rt5670: Add runtime PM support
X-Git-Tag: firefly_0821_release~176^2~1862^2~14^2~13^2~1^2~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=64e89e5f55484d289c8b326521e5a12291e2283e;p=firefly-linux-kernel-4.4.55.git

ASoC: rt5670: Add runtime PM support

This patch adds runtime PM support on rt5670 codec.

Signed-off-by: Lin Mengdong <mengdong.lin@intel.com>
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/codecs/rt5670.c b/sound/soc/codecs/rt5670.c
index cd47ef1f5561..78d85de8af6f 100644
--- a/sound/soc/codecs/rt5670.c
+++ b/sound/soc/codecs/rt5670.c
@@ -14,6 +14,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
+#include <linux/pm_runtime.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <linux/acpi.h>
@@ -2734,18 +2735,26 @@ static int rt5670_i2c_probe(struct i2c_client *i2c,
 
 	}
 
+	pm_runtime_enable(&i2c->dev);
+	pm_request_idle(&i2c->dev);
+
 	ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_rt5670,
 			rt5670_dai, ARRAY_SIZE(rt5670_dai));
 	if (ret < 0)
 		goto err;
 
+	pm_runtime_put(&i2c->dev);
+
 	return 0;
 err:
+	pm_runtime_disable(&i2c->dev);
+
 	return ret;
 }
 
 static int rt5670_i2c_remove(struct i2c_client *i2c)
 {
+	pm_runtime_disable(&i2c->dev);
 	snd_soc_unregister_codec(&i2c->dev);
 
 	return 0;