110 	union i2c_smbus_data data;  in mlx90614_write_word()  local
115 	data.word = 0x0000; /* erase command */  in mlx90614_write_word()
119 			     I2C_SMBUS_WORD_DATA, &data);  in mlx90614_write_word()
125 	data.word = value; /* actual write */  in mlx90614_write_word()
129 			     I2C_SMBUS_WORD_DATA, &data);  in mlx90614_write_word()
180 static int mlx90614_power_get(struct mlx90614_data *data, bool startup)  in mlx90614_power_get()  argument
184 	if (!data->wakeup_gpio)  in mlx90614_power_get()
187 	pm_runtime_get_sync(&data->client->dev);  in mlx90614_power_get()
191 		if (time_before(now, data->ready_timestamp) &&  in mlx90614_power_get()
193 				data->ready_timestamp - now)) != 0) {  in mlx90614_power_get()
194 			pm_runtime_put_autosuspend(&data->client->dev);  in mlx90614_power_get()
202 static void mlx90614_power_put(struct mlx90614_data *data)  in mlx90614_power_put()  argument
204 	if (!data->wakeup_gpio)  in mlx90614_power_put()
207 	pm_runtime_mark_last_busy(&data->client->dev);  in mlx90614_power_put()
208 	pm_runtime_put_autosuspend(&data->client->dev);  in mlx90614_power_put()
211 static inline int mlx90614_power_get(struct mlx90614_data *data, bool startup)  in mlx90614_power_get()  argument
216 static inline void mlx90614_power_put(struct mlx90614_data *data)  in mlx90614_power_put()  argument
225 	struct mlx90614_data *data = iio_priv(indio_dev);  in mlx90614_read_raw()  local
251 		ret = mlx90614_power_get(data, true);  in mlx90614_read_raw()
254 		ret = i2c_smbus_read_word_data(data->client, cmd);  in mlx90614_read_raw()
255 		mlx90614_power_put(data);  in mlx90614_read_raw()
274 		mlx90614_power_get(data, false);  in mlx90614_read_raw()
275 		mutex_lock(&data->lock);  in mlx90614_read_raw()
276 		ret = i2c_smbus_read_word_data(data->client,  in mlx90614_read_raw()
278 		mutex_unlock(&data->lock);  in mlx90614_read_raw()
279 		mlx90614_power_put(data);  in mlx90614_read_raw()
294 		mlx90614_power_get(data, false);  in mlx90614_read_raw()
295 		mutex_lock(&data->lock);  in mlx90614_read_raw()
296 		ret = i2c_smbus_read_word_data(data->client, MLX90614_CONFIG);  in mlx90614_read_raw()
297 		mutex_unlock(&data->lock);  in mlx90614_read_raw()
298 		mlx90614_power_put(data);  in mlx90614_read_raw()
316 	struct mlx90614_data *data = iio_priv(indio_dev);  in mlx90614_write_raw()  local
326 		mlx90614_power_get(data, false);  in mlx90614_write_raw()
327 		mutex_lock(&data->lock);  in mlx90614_write_raw()
328 		ret = mlx90614_write_word(data->client, MLX90614_EMISSIVITY,  in mlx90614_write_raw()
330 		mutex_unlock(&data->lock);  in mlx90614_write_raw()
331 		mlx90614_power_put(data);  in mlx90614_write_raw()
338 		mlx90614_power_get(data, false);  in mlx90614_write_raw()
339 		mutex_lock(&data->lock);  in mlx90614_write_raw()
340 		ret = mlx90614_iir_search(data->client,  in mlx90614_write_raw()
342 		mutex_unlock(&data->lock);  in mlx90614_write_raw()
343 		mlx90614_power_put(data);  in mlx90614_write_raw()
407 static int mlx90614_sleep(struct mlx90614_data *data)  in mlx90614_sleep()  argument
411 	if (!data->wakeup_gpio) {  in mlx90614_sleep()
412 		dev_dbg(&data->client->dev, "Sleep disabled");  in mlx90614_sleep()
416 	dev_dbg(&data->client->dev, "Requesting sleep");  in mlx90614_sleep()
418 	mutex_lock(&data->lock);  in mlx90614_sleep()
419 	ret = i2c_smbus_xfer(data->client->adapter, data->client->addr,  in mlx90614_sleep()
420 			     data->client->flags | I2C_CLIENT_PEC,  in mlx90614_sleep()
423 	mutex_unlock(&data->lock);  in mlx90614_sleep()
428 static int mlx90614_wakeup(struct mlx90614_data *data)  in mlx90614_wakeup()  argument
430 	if (!data->wakeup_gpio) {  in mlx90614_wakeup()
431 		dev_dbg(&data->client->dev, "Wake-up disabled");  in mlx90614_wakeup()
435 	dev_dbg(&data->client->dev, "Requesting wake-up");  in mlx90614_wakeup()
437 	i2c_lock_adapter(data->client->adapter);  in mlx90614_wakeup()
438 	gpiod_direction_output(data->wakeup_gpio, 0);  in mlx90614_wakeup()
440 	gpiod_direction_input(data->wakeup_gpio);  in mlx90614_wakeup()
441 	i2c_unlock_adapter(data->client->adapter);  in mlx90614_wakeup()
443 	data->ready_timestamp = jiffies +  in mlx90614_wakeup()
452 	i2c_smbus_read_word_data(data->client, MLX90614_CONFIG);  in mlx90614_wakeup()
484 static inline int mlx90614_sleep(struct mlx90614_data *data)  in mlx90614_sleep()  argument
488 static inline int mlx90614_wakeup(struct mlx90614_data *data)  in mlx90614_wakeup()  argument
515 	struct mlx90614_data *data;  in mlx90614_probe()  local
521 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));  in mlx90614_probe()
525 	data = iio_priv(indio_dev);  in mlx90614_probe()
527 	data->client = client;  in mlx90614_probe()
528 	mutex_init(&data->lock);  in mlx90614_probe()
529 	data->wakeup_gpio = mlx90614_probe_wakeup(client);  in mlx90614_probe()
531 	mlx90614_wakeup(data);  in mlx90614_probe()
554 	if (data->wakeup_gpio) {  in mlx90614_probe()
568 	struct mlx90614_data *data = iio_priv(indio_dev);  in mlx90614_remove()  local
572 	if (data->wakeup_gpio) {  in mlx90614_remove()
575 			mlx90614_sleep(data);  in mlx90614_remove()
592 	struct mlx90614_data *data = iio_priv(indio_dev);  in mlx90614_pm_suspend()  local
594 	if (data->wakeup_gpio && pm_runtime_active(dev))  in mlx90614_pm_suspend()
595 		return mlx90614_sleep(data);  in mlx90614_pm_suspend()
603 	struct mlx90614_data *data = iio_priv(indio_dev);  in mlx90614_pm_resume()  local
606 	if (data->wakeup_gpio) {  in mlx90614_pm_resume()
607 		err = mlx90614_wakeup(data);  in mlx90614_pm_resume()
624 	struct mlx90614_data *data = iio_priv(indio_dev);  in mlx90614_pm_runtime_suspend()  local
626 	return mlx90614_sleep(data);  in mlx90614_pm_runtime_suspend()
632 	struct mlx90614_data *data = iio_priv(indio_dev);  in mlx90614_pm_runtime_resume()  local
634 	return mlx90614_wakeup(data);  in mlx90614_pm_runtime_resume()