The units after application of scale are 100*m/s^2,
The scale calculation is only for the device
with the range of 3, 6, 12, and 24g,
but some other chips have a range of 2, 4, 6, and 8g.
Modified the formula to a scale list.
The scales in the list are calculated by 1/sensitivity*9.8.
The new units after the application of scale are m/s^2.
Signed-off-by: LI Qingwu <Qing-wu.Li@xxxxxxxxxxxxxxxxxxxxxxx>
---
drivers/iio/accel/bmi088-accel-core.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/iio/accel/bmi088-accel-core.c b/drivers/iio/accel/bmi088-accel-core.c
index a06dae5c971d..9300313b63cb 100644
--- a/drivers/iio/accel/bmi088-accel-core.c
+++ b/drivers/iio/accel/bmi088-accel-core.c
@@ -119,6 +119,7 @@ struct bmi088_accel_chip_info {
u8 chip_id;
const struct iio_chan_spec *channels;
int num_channels;
+ const int scale_table[4][2];
};
struct bmi088_accel_data {
@@ -280,6 +281,7 @@ static int bmi088_accel_read_raw(struct iio_dev *indio_dev,
struct bmi088_accel_data *data = iio_priv(indio_dev);
struct device *dev = regmap_get_device(data->regmap);
int ret;
+ int reg;
switch (mask) {
case IIO_CHAN_INFO_RAW:
@@ -330,13 +332,12 @@ static int bmi088_accel_read_raw(struct iio_dev *indio_dev,
return ret;
ret = regmap_read(data->regmap,
- BMI088_ACCEL_REG_ACC_RANGE, val);
+ BMI088_ACCEL_REG_ACC_RANGE, ®);
if (ret)
goto out_read_raw_pm_put;
-
- *val2 = 15 - (*val & 0x3);
- *val = 3 * 980;
- ret = IIO_VAL_FRACTIONAL_LOG2;
+ *val = data->chip_info->scale_table[reg&0x03][0];
+ *val2 = data->chip_info->scale_table[reg&0x03][1];
+ ret = IIO_VAL_INT_PLUS_MICRO;
goto out_read_raw_pm_put;
default:
@@ -432,6 +433,7 @@ static const struct bmi088_accel_chip_info bmi088_accel_chip_info_tbl[] = {
.chip_id = 0x1E,
.channels = bmi088_accel_channels,
.num_channels = ARRAY_SIZE(bmi088_accel_channels),
+ .scale_table = {{0, 897}, {0, 1795}, {0, 3590}, {0, 7179}},
},
};
--
2.25.1
