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staging:iio: Fix adis16220 channel offsets and scales 

Most of the channel offsets and scales in the adis16220 are incorrect:
	* Temperature scale is off by a factor of 1000
	* Voltage scale is off by a factor of 1000
	* Acceleration seems to have a typo "187042" since it should be instead of
	  "1887042"
	* Temperature offset is completely wrong

This patch fixes these issues.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2012-10-15 10:35:00 +01:00 committed by Jonathan Cameron
parent d5304b7712
commit 4524034056
1 changed files with 11 additions and 8 deletions
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19
drivers/staging/iio/accel/adis16220_core.c
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@ -486,7 +486,7 @@ static int adis16220_read_raw(struct iio_dev *indio_dev,
break;
case IIO_CHAN_INFO_OFFSET:
if (chan->type == IIO_TEMP) {
*val = 25;
*val = 25000 / -470 - 1278; /* 25 C = 1278 */
return IIO_VAL_INT;
}
addrind = 1;
@ -495,19 +495,22 @@ static int adis16220_read_raw(struct iio_dev *indio_dev,
addrind = 2;
break;
case IIO_CHAN_INFO_SCALE:
*val = 0;
switch (chan->type) {
case IIO_TEMP:
*val2 = -470000;
*val = -470; /* -0.47 C */
*val2 = 0;
return IIO_VAL_INT_PLUS_MICRO;
case IIO_ACCEL:
*val2 = 1887042;
*val2 = IIO_G_TO_M_S_2(19073); /* 19.073 g */
return IIO_VAL_INT_PLUS_MICRO;
case IIO_VOLTAGE:
if (chan->channel == 0)
*val2 = 0012221;
else /* Should really be dependent on VDD */
*val2 = 305;
if (chan->channel == 0) {
*val = 1;
*val2 = 220700; /* 1.2207 mV */
} else {
/* Should really be dependent on VDD */
*val2 = 305180; /* 305.18 uV */
}
return IIO_VAL_INT_PLUS_MICRO;
default:
return -EINVAL;