Commit f905772e authored by Gwendal Grignou's avatar Gwendal Grignou Committed by Jonathan Cameron
Browse files

iio: bma220: Use scan_type when processing raw data 



Use channel definition as root of trust and replace constant
when reading elements directly using the raw sysfs attributes.

Signed-off-by: default avatarGwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20211104082413.3681212-2-gwendal@chromium.org


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 0d376dc9

drivers/iio/accel/bma220_spi.c

+3 −3
Original line number Diff line number Diff line
@@ -27,7 +27,6 @@ 
#define BMA220_CHIP_ID				0xDD

#define BMA220_READ_MASK			BIT(7)

#define BMA220_RANGE_MASK			GENMASK(1, 0)

#define BMA220_DATA_SHIFT			2

#define BMA220_SUSPEND_SLEEP			0xFF

#define BMA220_SUSPEND_WAKE			0x00
@@ -45,7 +44,7 @@ 
		.sign = 's',						\

		.realbits = 6,						\

		.storagebits = 8,					\

		.shift = BMA220_DATA_SHIFT,				\

		.shift = 2,						\

		.endianness = IIO_CPU,					\

	},								\

}
@@ -125,7 +124,8 @@ static int bma220_read_raw(struct iio_dev *indio_dev, 
		ret = bma220_read_reg(data->spi_device, chan->address);

		if (ret < 0)

			return -EINVAL;

		*val = sign_extend32(ret >> BMA220_DATA_SHIFT, 5);

		*val = sign_extend32(ret >> chan->scan_type.shift,

				     chan->scan_type.realbits - 1);

		return IIO_VAL_INT;

	case IIO_CHAN_INFO_SCALE:

		ret = bma220_read_reg(data->spi_device, BMA220_REG_RANGE);