1 // SPDX-License-Identifier: GPL-2.0-only
91 static irqreturn_t tlc4541_trigger_handler(int irq, void *p)  in tlc4541_trigger_handler()  argument
93 	struct iio_poll_func *pf = p;  in tlc4541_trigger_handler()
94 	struct iio_dev *indio_dev = pf->indio_dev;  in tlc4541_trigger_handler()
98 	ret = spi_sync(st->spi, &st->scan_single_msg);  in tlc4541_trigger_handler()
102 	iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,  in tlc4541_trigger_handler()
106 	iio_trigger_notify_done(indio_dev->trig);  in tlc4541_trigger_handler()
112 	int vref;  in tlc4541_get_range()  local
114 	vref = regulator_get_voltage(st->reg);  in tlc4541_get_range()
115 	if (vref < 0)  in tlc4541_get_range()
116 		return vref;  in tlc4541_get_range()
118 	vref /= 1000;  in tlc4541_get_range()
120 	return vref;  in tlc4541_get_range()
137 		ret = spi_sync(st->spi, &st->scan_single_msg);  in tlc4541_read_raw()
141 		*val = be16_to_cpu(st->rx_buf[0]);  in tlc4541_read_raw()
142 		*val = *val >> chan->scan_type.shift;  in tlc4541_read_raw()
143 		*val &= GENMASK(chan->scan_type.realbits - 1, 0);  in tlc4541_read_raw()
150 		*val2 = chan->scan_type.realbits;  in tlc4541_read_raw()
153 	return -EINVAL;  in tlc4541_read_raw()
168 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));  in tlc4541_probe()
170 		return -ENOMEM;  in tlc4541_probe()
176 	st->spi = spi;  in tlc4541_probe()
178 	info = &tlc4541_chip_info[spi_get_device_id(spi)->driver_data];  in tlc4541_probe()
180 	indio_dev->name = spi_get_device_id(spi)->name;  in tlc4541_probe()
181 	indio_dev->modes = INDIO_DIRECT_MODE;  in tlc4541_probe()
182 	indio_dev->channels = info->channels;  in tlc4541_probe()
183 	indio_dev->num_channels = info->num_channels;  in tlc4541_probe()
184 	indio_dev->info = &tlc4541_info;  in tlc4541_probe()
190 	st->scan_single_xfer[0].rx_buf = &st->rx_buf[0];  in tlc4541_probe()
191 	st->scan_single_xfer[0].len = 3;  in tlc4541_probe()
192 	st->scan_single_xfer[1].delay.value = 3;  in tlc4541_probe()
193 	st->scan_single_xfer[1].delay.unit = SPI_DELAY_UNIT_NSECS;  in tlc4541_probe()
194 	st->scan_single_xfer[2].rx_buf = &st->rx_buf[0];  in tlc4541_probe()
195 	st->scan_single_xfer[2].len = 2;  in tlc4541_probe()
197 	spi_message_init_with_transfers(&st->scan_single_msg,  in tlc4541_probe()
198 					st->scan_single_xfer, 3);  in tlc4541_probe()
200 	st->reg = devm_regulator_get(&spi->dev, "vref");  in tlc4541_probe()
201 	if (IS_ERR(st->reg))  in tlc4541_probe()
202 		return PTR_ERR(st->reg);  in tlc4541_probe()
204 	ret = regulator_enable(st->reg);  in tlc4541_probe()
222 	regulator_disable(st->reg);  in tlc4541_probe()
234 	regulator_disable(st->reg);  in tlc4541_remove()