Clarify the conversion and formation of resultant data in the adis16201_read_raw() with sufficient comments. Signed-off-by: Himanshu Jha <himanshujha199640@xxxxxxxxx> --- drivers/staging/iio/accel/adis16201.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/staging/iio/accel/adis16201.c b/drivers/staging/iio/accel/adis16201.c index 8d795e2..946c7b1 100644 --- a/drivers/staging/iio/accel/adis16201.c +++ b/drivers/staging/iio/accel/adis16201.c @@ -130,6 +130,11 @@ static int adis16201_read_raw(struct iio_dev *indio_dev, *val2 = 0; return IIO_VAL_INT_PLUS_MICRO; case IIO_ACCEL: + /* + * IIO base unit for sensitivity of accelerometer + * is milli g. + * 1 LSB represents 0.244 mg. + */ *val = 0; *val2 = IIO_G_TO_M_S_2(462400); return IIO_VAL_INT_PLUS_NANO; @@ -142,6 +147,11 @@ static int adis16201_read_raw(struct iio_dev *indio_dev, } break; case IIO_CHAN_INFO_OFFSET: + /* + * The raw ADC value is 0x4FE when the temperature + * is 25 degrees and the scale factor per milli + * degree celcius is -470. + */ *val = 25000 / -470 - 1278; return IIO_VAL_INT; case IIO_CHAN_INFO_CALIBBIAS: -- 2.7.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
