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Commit d5304b77 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

staging:iio: Fix adis16209 channel offsets and scales 



Most of the channel offsets and scales in the adis16209 are incorrect:
	* Temperature scale is of by a factor of 1000
	* Voltage scale is of by a factor of 1000
	* Temperature offset is completely wrong
	* Rotational position scale is missing

This patch fixes these issues. Also use the IIO_G_TO_M_S_2 macro for the
acceleration scale since this makes it much easier to compare it with the value
given in the datasheet.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 9cc19b81

drivers/staging/iio/accel/adis16209_core.c

+10 −8
Original line number Diff line number Diff line
@@ -343,28 +343,29 @@ static int adis16209_read_raw(struct iio_dev *indio_dev, 
		case IIO_VOLTAGE:

			*val = 0;

			if (chan->channel == 0)

				*val2 = 305180;

				*val2 = 305180; /* 0.30518 mV */

			else

				*val2 = 610500;

				*val2 = 610500; /* 0.6105 mV */

			return IIO_VAL_INT_PLUS_MICRO;

		case IIO_TEMP:

			*val = 0;

			*val2 = -470000;

			*val = -470; /* -0.47 C */

			*val2 = 0;

			return IIO_VAL_INT_PLUS_MICRO;

		case IIO_ACCEL:

			*val = 0;

			*val2 = 2394;

			return IIO_VAL_INT_PLUS_MICRO;

			*val2 = IIO_G_TO_M_S_2(244140); /* 0.244140 mg */

			return IIO_VAL_INT_PLUS_NANO;

		case IIO_INCLI:

		case IIO_ROT:

			*val = 0;

			*val2 = 436;

			*val2 = 25000; /* 0.025 degree */

			return IIO_VAL_INT_PLUS_MICRO;

		default:

			return -EINVAL;

		}

		break;

	case IIO_CHAN_INFO_OFFSET:

		*val = 25;

		*val = 25000 / -470 - 0x4FE; /* 25 C = 0x4FE */

		return IIO_VAL_INT;

	case IIO_CHAN_INFO_CALIBBIAS:

		switch (chan->type) {
@@ -491,6 +492,7 @@ static const struct iio_chan_spec adis16209_channels[] = { 
		.modified = 1,

		.channel2 = IIO_MOD_X,

		.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,

		IIO_CHAN_INFO_SCALE_SHARED_BIT,

		.address = rot,

		.scan_index = ADIS16209_SCAN_ROT,

		.scan_type = {