139 static int ad799x_write_config(struct ad799x_state *st, u16 val)  in ad799x_write_config()  argument
141 	switch (st->id) {  in ad799x_write_config()
144 		return i2c_smbus_write_word_swapped(st->client, AD7998_CONF_REG,  in ad799x_write_config()
149 		return i2c_smbus_write_byte_data(st->client, AD7998_CONF_REG,  in ad799x_write_config()
153 		st->config = val;  in ad799x_write_config()
158 static int ad799x_read_config(struct ad799x_state *st)  in ad799x_read_config()  argument
160 	switch (st->id) {  in ad799x_read_config()
163 		return i2c_smbus_read_word_swapped(st->client, AD7998_CONF_REG);  in ad799x_read_config()
167 		return i2c_smbus_read_byte_data(st->client, AD7998_CONF_REG);  in ad799x_read_config()
170 		return st->config;  in ad799x_read_config()
184 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_trigger_handler()  local
188 	switch (st->id) {  in ad799x_trigger_handler()
192 		cmd = st->config |  in ad799x_trigger_handler()
209 	b_sent = i2c_smbus_read_i2c_block_data(st->client,  in ad799x_trigger_handler()
210 			cmd, st->transfer_size, st->rx_buf);  in ad799x_trigger_handler()
214 	iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,  in ad799x_trigger_handler()
225 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_update_scan_mode()  local
227 	kfree(st->rx_buf);  in ad799x_update_scan_mode()
228 	st->rx_buf = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);  in ad799x_update_scan_mode()
229 	if (!st->rx_buf)  in ad799x_update_scan_mode()
232 	st->transfer_size = bitmap_weight(scan_mask, indio_dev->masklength) * 2;  in ad799x_update_scan_mode()
234 	switch (st->id) {  in ad799x_update_scan_mode()
240 		st->config &= ~(GENMASK(7, 0) << AD799X_CHANNEL_SHIFT);  in ad799x_update_scan_mode()
241 		st->config |= (*scan_mask << AD799X_CHANNEL_SHIFT);  in ad799x_update_scan_mode()
242 		return ad799x_write_config(st, st->config);  in ad799x_update_scan_mode()
248 static int ad799x_scan_direct(struct ad799x_state *st, unsigned ch)  in ad799x_scan_direct()  argument
252 	switch (st->id) {  in ad799x_scan_direct()
256 		cmd = st->config | (BIT(ch) << AD799X_CHANNEL_SHIFT);  in ad799x_scan_direct()
271 	return i2c_smbus_read_word_swapped(st->client, cmd);  in ad799x_scan_direct()
281 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_read_raw()  local
289 			ret = ad799x_scan_direct(st, chan->scan_index);  in ad799x_read_raw()
298 		ret = regulator_get_voltage(st->vref);  in ad799x_read_raw()
322 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_read_frequency()  local
324 	int ret = i2c_smbus_read_byte_data(st->client, AD7998_CYCLE_TMR_REG);  in ad799x_read_frequency()
337 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_write_frequency()  local
347 	ret = i2c_smbus_read_byte_data(st->client, AD7998_CYCLE_TMR_REG);  in ad799x_write_frequency()
361 	ret = i2c_smbus_write_byte_data(st->client, AD7998_CYCLE_TMR_REG,  in ad799x_write_frequency()
378 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_read_event_config()  local
380 	if (!(st->config & AD7998_ALERT_EN))  in ad799x_read_event_config()
383 	if ((st->config >> AD799X_CHANNEL_SHIFT) & BIT(chan->scan_index))  in ad799x_read_event_config()
395 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_write_event_config()  local
405 		st->config |= BIT(chan->scan_index) << AD799X_CHANNEL_SHIFT;  in ad799x_write_event_config()
407 		st->config &= ~(BIT(chan->scan_index) << AD799X_CHANNEL_SHIFT);  in ad799x_write_event_config()
409 	if (st->config >> AD799X_CHANNEL_SHIFT)  in ad799x_write_event_config()
410 		st->config |= AD7998_ALERT_EN;  in ad799x_write_event_config()
412 		st->config &= ~AD7998_ALERT_EN;  in ad799x_write_event_config()
414 	ret = ad799x_write_config(st, st->config);  in ad799x_write_event_config()
449 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_write_event_value()  local
455 	ret = i2c_smbus_write_word_swapped(st->client,  in ad799x_write_event_value()
471 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_read_event_value()  local
474 	ret = i2c_smbus_read_word_swapped(st->client,  in ad799x_read_event_value()
488 	struct ad799x_state *st = iio_priv(private);  in ad799x_event_handler()  local
491 	ret = i2c_smbus_read_byte_data(st->client, AD7998_ALERT_STAT_REG);  in ad799x_event_handler()
495 	if (i2c_smbus_write_byte_data(st->client, AD7998_ALERT_STAT_REG,  in ad799x_event_handler()
776 	struct ad799x_state *st;  in ad799x_probe()  local
781 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*st));  in ad799x_probe()
785 	st = iio_priv(indio_dev);  in ad799x_probe()
789 	st->id = id->driver_data;  in ad799x_probe()
791 		st->chip_config = &chip_info->irq_config;  in ad799x_probe()
793 		st->chip_config = &chip_info->noirq_config;  in ad799x_probe()
797 	st->reg = devm_regulator_get(&client->dev, "vcc");  in ad799x_probe()
798 	if (IS_ERR(st->reg))  in ad799x_probe()
799 		return PTR_ERR(st->reg);  in ad799x_probe()
800 	ret = regulator_enable(st->reg);  in ad799x_probe()
803 	st->vref = devm_regulator_get(&client->dev, "vref");  in ad799x_probe()
804 	if (IS_ERR(st->vref)) {  in ad799x_probe()
805 		ret = PTR_ERR(st->vref);  in ad799x_probe()
808 	ret = regulator_enable(st->vref);  in ad799x_probe()
812 	st->client = client;  in ad799x_probe()
816 	indio_dev->info = st->chip_config->info;  in ad799x_probe()
819 	indio_dev->channels = st->chip_config->channel;  in ad799x_probe()
822 	ret = ad799x_write_config(st, st->chip_config->default_config);  in ad799x_probe()
825 	ret = ad799x_read_config(st);  in ad799x_probe()
828 	st->config = ret;  in ad799x_probe()
856 	regulator_disable(st->vref);  in ad799x_probe()
858 	regulator_disable(st->reg);  in ad799x_probe()
866 	struct ad799x_state *st = iio_priv(indio_dev);  in ad799x_remove()  local
871 	regulator_disable(st->vref);  in ad799x_remove()
872 	regulator_disable(st->reg);  in ad799x_remove()
873 	kfree(st->rx_buf);  in ad799x_remove()