Commit 919726c9 authored by Nuno Sá's avatar Nuno Sá Committed by Jonathan Cameron
Browse files

iio: ltc2983: add support for optional reset gpio 



Check if an optional reset gpio is present and if so, make sure to reset
the device.

Signed-off-by: default avatarNuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210825084149.11587-1-nuno.sa@analog.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 26df977a

drivers/iio/temperature/ltc2983.c

+11 −0
Original line number Diff line number Diff line
@@ -1470,6 +1470,7 @@ static int ltc2983_probe(struct spi_device *spi) 
{

	struct ltc2983_data *st;

	struct iio_dev *indio_dev;

	struct gpio_desc *gpio;

	const char *name = spi_get_device_id(spi)->name;

	int ret;
@@ -1494,6 +1495,16 @@ static int ltc2983_probe(struct spi_device *spi) 
	if (ret)

		return ret;



	gpio = devm_gpiod_get_optional(&st->spi->dev, "reset", GPIOD_OUT_HIGH);

	if (IS_ERR(gpio))

		return PTR_ERR(gpio);



	if (gpio) {

		/* bring the device out of reset */

		usleep_range(1000, 1200);

		gpiod_set_value_cansleep(gpio, 0);

	}



	ret = ltc2983_setup(st, true);

	if (ret)

		return ret;