+#ifdef CONFIG_PM_SLEEP
+static int mmc35240_suspend(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct mmc35240_data *data = iio_priv(indio_dev);
+
+ regcache_cache_only(data->regmap, true);
+
+ return 0;
+}
+
+static int mmc35240_resume(struct device *dev)
+{
+ struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct mmc35240_data *data = iio_priv(indio_dev);
+ int ret;
+
+ regcache_mark_dirty(data->regmap);
+ ret = regcache_sync_region(data->regmap, MMC35240_REG_CTRL0,
+ MMC35240_REG_CTRL1);
+ if (ret < 0)
+ dev_err(dev, "Failed to restore control registers\n");
+
+ regcache_cache_only(data->regmap, false);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops mmc35240_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(mmc35240_suspend, mmc35240_resume)
+};
+