From 6dcf1bb85aed8a392ab071d3c2b6074bb302fcad Mon Sep 17 00:00:00 2001
From: Shubhrajyoti Datta <shubhrajyoti@ti.com>
Date: Sat, 14 Aug 2010 21:08:50 +0200
Subject: [PATCH] --- yaml --- r: 209421 b: refs/heads/master c:
 9914518e79800c977e20eda1335d43a4df813e3d h: refs/heads/master i:   209419:
 852a3318a45bd9415308c2b9c80390c0c460c1d5 v: v3

---
 [refs]                     |  2 +-
 trunk/drivers/hwmon/lm75.c | 39 ++++++++++++++++++++++++++++++++++++++
 trunk/drivers/hwmon/lm75.h |  1 +
 3 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index cc8e12f1d298..3d9f0f61fd96 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 960f12f4d1eb5ba3c76dc6b57a909a65dd59e1c2
+refs/heads/master: 9914518e79800c977e20eda1335d43a4df813e3d
diff --git a/trunk/drivers/hwmon/lm75.c b/trunk/drivers/hwmon/lm75.c
index 393f354f92a4..ab5b87a81677 100644
--- a/trunk/drivers/hwmon/lm75.c
+++ b/trunk/drivers/hwmon/lm75.c
@@ -280,10 +280,49 @@ static int lm75_detect(struct i2c_client *new_client,
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int lm75_suspend(struct device *dev)
+{
+	int status;
+	struct i2c_client *client = to_i2c_client(dev);
+	status = lm75_read_value(client, LM75_REG_CONF);
+	if (status < 0) {
+		dev_dbg(&client->dev, "Can't read config? %d\n", status);
+		return status;
+	}
+	status = status | LM75_SHUTDOWN;
+	lm75_write_value(client, LM75_REG_CONF, status);
+	return 0;
+}
+
+static int lm75_resume(struct device *dev)
+{
+	int status;
+	struct i2c_client *client = to_i2c_client(dev);
+	status = lm75_read_value(client, LM75_REG_CONF);
+	if (status < 0) {
+		dev_dbg(&client->dev, "Can't read config? %d\n", status);
+		return status;
+	}
+	status = status & ~LM75_SHUTDOWN;
+	lm75_write_value(client, LM75_REG_CONF, status);
+	return 0;
+}
+
+static const struct dev_pm_ops lm75_dev_pm_ops = {
+	.suspend	= lm75_suspend,
+	.resume		= lm75_resume,
+};
+#define LM75_DEV_PM_OPS (&lm75_dev_pm_ops)
+#else
+#define LM75_DEV_PM_OPS NULL
+#endif /* CONFIG_PM */
+
 static struct i2c_driver lm75_driver = {
 	.class		= I2C_CLASS_HWMON,
 	.driver = {
 		.name	= "lm75",
+		.pm	= LM75_DEV_PM_OPS,
 	},
 	.probe		= lm75_probe,
 	.remove		= lm75_remove,
diff --git a/trunk/drivers/hwmon/lm75.h b/trunk/drivers/hwmon/lm75.h
index 7c93454bb4e3..e547a3eb4de3 100644
--- a/trunk/drivers/hwmon/lm75.h
+++ b/trunk/drivers/hwmon/lm75.h
@@ -30,6 +30,7 @@
 /* straight from the datasheet */
 #define LM75_TEMP_MIN (-55000)
 #define LM75_TEMP_MAX 125000
+#define LM75_SHUTDOWN 0x01
 
 /* TEMP: 0.001C/bit (-55C to +125C)
    REG: (0.5C/bit, two's complement) << 7 */