diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2019-10-11 17:43:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-31 14:37:11 +0300 |
| commit | b94653802a0a4ca027f8d9ff3ea79b4ebd2aa52e (patch) | |
| tree | c8f3880652cd8b375c20b2336a986f6bfb947385 /drivers/iio/adc/max1027.c | |
| parent | 8877aaf6afceb442f24e962eace325e6ebd7ca95 (diff) | |
| download | linux-b94653802a0a4ca027f8d9ff3ea79b4ebd2aa52e.tar.xz | |
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/adc/max1027.c')
| -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 ebc715927e63..03af02769370 100644 --- a/drivers/iio/adc/max1027.c +++ b/drivers/iio/adc/max1027.c @@ -462,6 +462,14 @@ 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); |