iio: imu: st_lsm6dsx: discard samples during filters settling time

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During digital filters settling time the driver is expected to drop
samples since they can be corrupted. Introduce the capability to drop
a given number of samples according to the configured ODR.
Add sample_to_discard for LSM6DSM-like sensors since new generation
devices (e.g. LSM6DSO) support DRDY mask where corrupted samples are
masked in hw with values greather than 0x7ffd so the driver can easily
discard them.
I have not added sample_to_discard support for LSM6DS3 or LSM6DS3H since
I do not have any sample for testing at the moment.

Reported-by: Philippe De Muyter <phdm@macqel.be>
Tested-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/21dcd94935c147ef9b1da4984b3da6264ee9609e.1677496295.git.lorenzo@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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This commit is contained in:

Lorenzo Bianconi 2023-02-27 12:14:56 +01:00 • committed by Jonathan Cameron

parent accb9d05df

commit db3c490503

3 changed files with 78 additions and 8 deletions

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11

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h

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57

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c

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18

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c

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