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| author | Peter Meerwald <pmeerw@pmeerw.net> | 2014-07-16 19:32:00 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-07-20 17:38:39 +0100 |
| commit | 381676d5e86596b11e22a62f196e192df6091373 (patch) | |
| tree | abc4e1eed66b45c521bb63028b0f1598ad126f94 /drivers/iio | |
| parent | 61bd55ce1667809f022be88da77db17add90ea4e (diff) | |
| download | lwn-381676d5e86596b11e22a62f196e192df6091373.tar.gz lwn-381676d5e86596b11e22a62f196e192df6091373.zip | |
iio:bma180: Fix scale factors to report correct acceleration units
The userspace interface for acceleration sensors is documented as using
m/s^2 units [Documentation/ABI/testing/sysfs-bus-iio]
The fullscale raw values for the BMA80 corresponds to -/+ 1, 1.5, 2, etc G
depending on the selected mode.
The scale table was converting to G rather than m/s^2.
Change the scaling table to match the documented interface.
See commit 71702e6e, iio: mma8452: Use correct acceleration units,
for a related fix.
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/accel/bma180.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c index a7e68c81f89d..28388bb5d583 100644 --- a/drivers/iio/accel/bma180.c +++ b/drivers/iio/accel/bma180.c @@ -68,13 +68,13 @@ /* Defaults values */ #define BMA180_DEF_PMODE 0 #define BMA180_DEF_BW 20 -#define BMA180_DEF_SCALE 250 +#define BMA180_DEF_SCALE 2452 /* Available values for sysfs */ #define BMA180_FLP_FREQ_AVAILABLE \ "10 20 40 75 150 300" #define BMA180_SCALE_AVAILABLE \ - "0.000130 0.000190 0.000250 0.000380 0.000500 0.000990 0.001980" + "0.001275 0.001863 0.002452 0.003727 0.004903 0.009709 0.019417" struct bma180_data { struct i2c_client *client; @@ -94,7 +94,7 @@ enum bma180_axis { }; static int bw_table[] = { 10, 20, 40, 75, 150, 300 }; /* Hz */ -static int scale_table[] = { 130, 190, 250, 380, 500, 990, 1980 }; +static int scale_table[] = { 1275, 1863, 2452, 3727, 4903, 9709, 19417 }; static int bma180_get_acc_reg(struct bma180_data *data, enum bma180_axis axis) { |