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staging: iio: ad7816: Set RD/WR pin and CONVST pin as outputs. 

The RD/WR pin and CONVST pin are logical inputs to the AD78xx
chip as per the datasheet. Hence convert them to outputs.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Nishad Kamdar 2018-11-09 13:07:18 +05:30 committed by Jonathan Cameron
parent 06c77f564d
commit 72e3a5248d
1 changed files with 3 additions and 2 deletions
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5
drivers/staging/iio/adc/ad7816.c
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@ -369,14 +369,15 @@ static int ad7816_probe(struct spi_device *spi_dev)
chip->oti_data[i] = 203;
chip->id = spi_get_device_id(spi_dev)->driver_data;
chip->rdwr_pin = devm_gpiod_get(&spi_dev->dev, "rdwr", GPIOD_IN);
chip->rdwr_pin = devm_gpiod_get(&spi_dev->dev, "rdwr", GPIOD_OUT_HIGH);
if (IS_ERR(chip->rdwr_pin)) {
ret = PTR_ERR(chip->rdwr_pin);
dev_err(&spi_dev->dev, "Failed to request rdwr GPIO: %d\n",
ret);
return ret;
}
chip->convert_pin = devm_gpiod_get(&spi_dev->dev, "convert", GPIOD_IN);
chip->convert_pin = devm_gpiod_get(&spi_dev->dev, "convert",
GPIOD_OUT_HIGH);
if (IS_ERR(chip->convert_pin)) {
ret = PTR_ERR(chip->convert_pin);
dev_err(&spi_dev->dev, "Failed to request convert GPIO: %d\n",