diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2019-10-11 16:43:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-04 13:34:13 +0100 |
| commit | 91986927053a94913eb20b67dac0d777babfc628 (patch) | |
| tree | 4a5ca55960b116de1857912c15953f60669f8569 /drivers/iio | |
| parent | faece3af80729763bb28449fa803d12c962571bd (diff) | |
iio: adc: max1027: Reset the device at probe time
[ Upstream commit db033831b4f5589f9fcbadb837614a7c4eac0308 ]
All the registers are configured by the driver, let's reset the chip
at probe time, avoiding any conflict with a possible earlier
configuration.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/max1027.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c index 41d495c6035e..7d5e4114e7a8 100644 --- a/drivers/iio/adc/max1027.c +++ b/drivers/iio/adc/max1027.c @@ -470,6 +470,14 @@ static int max1027_probe(struct spi_device *spi) goto fail_dev_register; } + /* Internal reset */ + st->reg = MAX1027_RST_REG; + ret = spi_write(st->spi, &st->reg, 1); + if (ret < 0) { + dev_err(&indio_dev->dev, "Failed to reset the ADC\n"); + return ret; + } + /* Disable averaging */ st->reg = MAX1027_AVG_REG; ret = spi_write(st->spi, &st->reg, 1); |