+#ifdef CONFIG_PM_SLEEP
+static int sx9500_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct sx9500_data *data = iio_priv(indio_dev);
+ int ret;
+
+ mutex_lock(&data->mutex);
+ ret = regmap_read(data->regmap, SX9500_REG_PROX_CTRL0,
+ &data->suspend_ctrl0);
+ if (ret < 0)
+ goto out;
+
+ /*
+ * Scan period doesn't matter because when all the sensors are
+ * deactivated the device is in sleep mode.
+ */
+ ret = regmap_write(data->regmap, SX9500_REG_PROX_CTRL0, 0);
+
+out:
+ mutex_unlock(&data->mutex);
+ return ret;
+}
+
+static int sx9500_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct sx9500_data *data = iio_priv(indio_dev);
+ int ret;
+
+ mutex_lock(&data->mutex);
+ ret = regmap_write(data->regmap, SX9500_REG_PROX_CTRL0,
+ data->suspend_ctrl0);
+ mutex_unlock(&data->mutex);
+
+ return ret;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static const struct dev_pm_ops sx9500_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sx9500_suspend, sx9500_resume)
+};
+