90 static int ad7291_i2c_read(struct ad7291_chip_info *chip, u8 reg, u16 *data)  in ad7291_i2c_read()  argument
92 	struct i2c_client *client = chip->client;  in ad7291_i2c_read()
106 static int ad7291_i2c_write(struct ad7291_chip_info *chip, u8 reg, u16 data)  in ad7291_i2c_write()  argument
108 	return i2c_smbus_write_word_swapped(chip->client, reg, data);  in ad7291_i2c_write()
114 	struct ad7291_chip_info *chip = iio_priv(private);  in ad7291_event_handler()  local
120 	if (ad7291_i2c_read(chip, AD7291_T_ALERT_STATUS, &t_status))  in ad7291_event_handler()
123 	if (ad7291_i2c_read(chip, AD7291_VOLTAGE_ALERT_STATUS, &v_status))  in ad7291_event_handler()
129 	command = chip->command | AD7291_ALERT_CLEAR;  in ad7291_event_handler()
130 	ad7291_i2c_write(chip, AD7291_COMMAND, command);  in ad7291_event_handler()
132 	command = chip->command & ~AD7291_ALERT_CLEAR;  in ad7291_event_handler()
133 	ad7291_i2c_write(chip, AD7291_COMMAND, command);  in ad7291_event_handler()
209 	struct ad7291_chip_info *chip = iio_priv(indio_dev);  in ad7291_read_event_value()  local
213 	ret = ad7291_i2c_read(chip, ad7291_threshold_reg(chan, dir, info),  in ad7291_read_event_value()
234 	struct ad7291_chip_info *chip = iio_priv(indio_dev);  in ad7291_write_event_value()  local
244 	return ad7291_i2c_write(chip, ad7291_threshold_reg(chan, dir, info),  in ad7291_write_event_value()
253 	struct ad7291_chip_info *chip = iio_priv(indio_dev);  in ad7291_read_event_config()  local
261 		return !!(chip->c_mask & BIT(15 - chan->channel));  in ad7291_read_event_config()
278 	struct ad7291_chip_info *chip = iio_priv(indio_dev);  in ad7291_write_event_config()  local
282 	mutex_lock(&chip->state_lock);  in ad7291_write_event_config()
283 	regval = chip->command;  in ad7291_write_event_config()
294 		if ((!state) && (chip->c_mask & mask))  in ad7291_write_event_config()
295 			chip->c_mask &= ~mask;  in ad7291_write_event_config()
296 		else if (state && (!(chip->c_mask & mask)))  in ad7291_write_event_config()
297 			chip->c_mask |= mask;  in ad7291_write_event_config()
302 		regval |= chip->c_mask;  in ad7291_write_event_config()
303 		if (chip->c_mask) /* Enable autocycle? */  in ad7291_write_event_config()
306 		ret = ad7291_i2c_write(chip, AD7291_COMMAND, regval);  in ad7291_write_event_config()
310 		chip->command = regval;  in ad7291_write_event_config()
317 	mutex_unlock(&chip->state_lock);  in ad7291_write_event_config()
328 	struct ad7291_chip_info *chip = iio_priv(indio_dev);  in ad7291_read_raw()  local
335 			mutex_lock(&chip->state_lock);  in ad7291_read_raw()
337 			if (chip->command & AD7291_AUTOCYCLE) {  in ad7291_read_raw()
338 				mutex_unlock(&chip->state_lock);  in ad7291_read_raw()
342 			regval = chip->command & (~AD7291_VOLTAGE_MASK);  in ad7291_read_raw()
344 			ret = ad7291_i2c_write(chip, AD7291_COMMAND, regval);  in ad7291_read_raw()
346 				mutex_unlock(&chip->state_lock);  in ad7291_read_raw()
350 			ret = i2c_smbus_read_word_swapped(chip->client,  in ad7291_read_raw()
353 				mutex_unlock(&chip->state_lock);  in ad7291_read_raw()
357 			mutex_unlock(&chip->state_lock);  in ad7291_read_raw()
361 			ret = i2c_smbus_read_word_swapped(chip->client,  in ad7291_read_raw()
371 		ret = i2c_smbus_read_word_swapped(chip->client,  in ad7291_read_raw()
380 			if (chip->reg) {  in ad7291_read_raw()
383 				vref = regulator_get_voltage(chip->reg);  in ad7291_read_raw()
471 	struct ad7291_chip_info *chip;  in ad7291_probe()  local
475 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));  in ad7291_probe()
478 	chip = iio_priv(indio_dev);  in ad7291_probe()
481 		chip->reg = devm_regulator_get(&client->dev, "vref");  in ad7291_probe()
482 		if (IS_ERR(chip->reg))  in ad7291_probe()
483 			return PTR_ERR(chip->reg);  in ad7291_probe()
485 		ret = regulator_enable(chip->reg);  in ad7291_probe()
490 	mutex_init(&chip->state_lock);  in ad7291_probe()
494 	chip->client = client;  in ad7291_probe()
496 	chip->command = AD7291_NOISE_DELAY |  in ad7291_probe()
501 		chip->command |= AD7291_EXT_REF;  in ad7291_probe()
511 	ret = ad7291_i2c_write(chip, AD7291_COMMAND, AD7291_RESET);  in ad7291_probe()
517 	ret = ad7291_i2c_write(chip, AD7291_COMMAND, chip->command);  in ad7291_probe()
544 	if (chip->reg)  in ad7291_probe()
545 		regulator_disable(chip->reg);  in ad7291_probe()
553 	struct ad7291_chip_info *chip = iio_priv(indio_dev);  in ad7291_remove()  local
560 	if (chip->reg)  in ad7291_remove()
561 		regulator_disable(chip->reg);  in ad7291_remove()