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| author | Michael Hennerich <michael.hennerich@analog.com> | 2011-09-02 16:25:31 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-06 23:03:31 (GMT) |
| commit | fe55a170399a0f30d1268848d2cb99dcf8fa413b (patch) | |
| tree | ff402e14eec41cbbb1ca72877ac154da0c610f64 | |
| parent | c3b7915df6356cee6412f24fbdcbf4f7ec107a5a (diff) | |
| download | linux-fe55a170399a0f30d1268848d2cb99dcf8fa413b.tar.xz | |
staging:iio:adc:ad7152: Fix differential channel return value and increase delay.
In differential mode zero scale equals to 0x8000.
Increase readout delay by 1ms.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/staging/iio/adc/ad7152.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/staging/iio/adc/ad7152.c b/drivers/staging/iio/adc/ad7152.c index 122d56c..42996b9 100644 --- a/drivers/staging/iio/adc/ad7152.c +++ b/drivers/staging/iio/adc/ad7152.c @@ -160,9 +160,9 @@ static IIO_DEVICE_ATTR(in_capacitance0_calibscale_calibration, static IIO_DEVICE_ATTR(in_capacitance1_calibscale_calibration, S_IWUSR, NULL, ad7152_start_gain_calib, 1); -/* Values are Update Rate (Hz), Conversion Time (ms) */ +/* Values are Update Rate (Hz), Conversion Time (ms) + 1*/ static const unsigned char ad7152_filter_rate_table[][2] = { - {200, 5}, {50, 20}, {20, 50}, {17, 60}, + {200, 5 + 1}, {50, 20 + 1}, {20, 50 + 1}, {17, 60 + 1}, }; static ssize_t ad7152_show_filter_rate_setup(struct device *dev, @@ -367,6 +367,9 @@ static int ad7152_read_raw(struct iio_dev *indio_dev, goto out; *val = swab16(ret); + if (chan->differential) + *val -= 0x8000; + ret = IIO_VAL_INT; break; case (1 << IIO_CHAN_INFO_CALIBSCALE_SEPARATE): |