+ ts->vcc33 = devm_regulator_get(&client->dev, "vcc33");
+ if (IS_ERR(ts->vcc33)) {
+ error = PTR_ERR(ts->vcc33);
+ if (error != -EPROBE_DEFER)
+ dev_err(&client->dev,
+ "Failed to get 'vcc33' regulator: %d\n",
+ error);
+ return error;
+ }
+
+ ts->vccio = devm_regulator_get(&client->dev, "vccio");
+ if (IS_ERR(ts->vccio)) {
+ error = PTR_ERR(ts->vccio);
+ if (error != -EPROBE_DEFER)
+ dev_err(&client->dev,
+ "Failed to get 'vccio' regulator: %d\n",
+ error);
+ return error;
+ }
+
+ ts->reset_gpio = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ts->reset_gpio)) {
+ error = PTR_ERR(ts->reset_gpio);
+
+ if (error == -EPROBE_DEFER)
+ return error;
+
+ if (error != -ENOENT && error != -ENOSYS) {
+ dev_err(&client->dev,
+ "failed to get reset gpio: %d\n",
+ error);
+ return error;
+ }
+
+ ts->keep_power_in_suspend = true;
+ }
+
+ error = elants_i2c_power_on(ts);
+ if (error)
+ return error;
+
+ error = devm_add_action(&client->dev, elants_i2c_power_off, ts);
+ if (error) {
+ dev_err(&client->dev,
+ "failed to install power off action: %d\n", error);
+ elants_i2c_power_off(ts);
+ return error;
+ }
+
+ /* Make sure there is something at this address */
+ if (i2c_smbus_xfer(client->adapter, client->addr, 0,
+ I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0) {
+ dev_err(&client->dev, "nothing at this address\n");
+ return -ENXIO;
+ }
+