In addition to going into shutdown mode on suspend also go into shutdown mode
on system shutdown. This way we can save a few mA when the main CPU is powered
off and the lm75 is still powered but not used any more.
Signed-off-by: Michael Thalmeier <michael.thalmeier@xxxxxxx>
---
drivers/hwmon/lm75.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 7ec5ccd..d860af9 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -433,10 +433,10 @@ static int lm75_detect(struct i2c_client *new_client,
}
#ifdef CONFIG_PM
-static int lm75_suspend(struct device *dev)
+
+static int _lm75_shutdown(struct i2c_client *client)
{
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);
@@ -447,6 +447,18 @@ static int lm75_suspend(struct device *dev)
return 0;
}
+static void lm75_shutdown(struct i2c_client *client)
+{
+ _lm75_shutdown(client);
+}
+
+static int lm75_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ return _lm75_shutdown(client);
+}
+
static int lm75_resume(struct device *dev)
{
int status;
@@ -466,8 +478,10 @@ static const struct dev_pm_ops lm75_dev_pm_ops = {
.resume = lm75_resume,
};
#define LM75_DEV_PM_OPS (&lm75_dev_pm_ops)
+#define LM75_SHUTDOWN_OP lm75_shutdown
#else
#define LM75_DEV_PM_OPS NULL
+#define LM75_SHUTDOWN_OP NULL
#endif /* CONFIG_PM */
static struct i2c_driver lm75_driver = {
@@ -478,6 +492,7 @@ static struct i2c_driver lm75_driver = {
},
.probe = lm75_probe,
.remove = lm75_remove,
+ .shutdown = LM75_SHUTDOWN_OP,
.id_table = lm75_ids,
.detect = lm75_detect,
.address_list = normal_i2c,
--
1.9.3
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