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path: root/drivers/iio/light/cm3232.c
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Diffstat (limited to 'drivers/iio/light/cm3232.c')
-rw-r--r--drivers/iio/light/cm3232.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/iio/light/cm3232.c b/drivers/iio/light/cm3232.c
index 90e3519a91de..39c8d99cc48e 100644
--- a/drivers/iio/light/cm3232.c
+++ b/drivers/iio/light/cm3232.c
@@ -378,6 +378,39 @@ static const struct i2c_device_id cm3232_id[] = {
{}
};
+#ifdef CONFIG_PM_SLEEP
+static int cm3232_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct cm3232_chip *chip = iio_priv(indio_dev);
+ struct i2c_client *client = chip->client;
+ int ret;
+
+ chip->regs_cmd |= CM3232_CMD_ALS_DISABLE;
+ ret = i2c_smbus_write_byte_data(client, CM3232_REG_ADDR_CMD,
+ chip->regs_cmd);
+
+ return ret;
+}
+
+static int cm3232_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct cm3232_chip *chip = iio_priv(indio_dev);
+ struct i2c_client *client = chip->client;
+ int ret;
+
+ chip->regs_cmd &= ~CM3232_CMD_ALS_DISABLE;
+ ret = i2c_smbus_write_byte_data(client, CM3232_REG_ADDR_CMD,
+ chip->regs_cmd | CM3232_CMD_ALS_RESET);
+
+ return ret;
+}
+
+static const struct dev_pm_ops cm3232_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(cm3232_suspend, cm3232_resume)};
+#endif
+
MODULE_DEVICE_TABLE(i2c, cm3232_id);
static const struct of_device_id cm3232_of_match[] = {
@@ -390,6 +423,9 @@ static struct i2c_driver cm3232_driver = {
.name = "cm3232",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(cm3232_of_match),
+#ifdef CONFIG_PM_SLEEP
+ .pm = &cm3232_pm_ops,
+#endif
},
.id_table = cm3232_id,
.probe = cm3232_probe,