iio: imu: st_lsm6dsx: add regmap API support

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Introduce regmap API support to access to i2c/spi bus instead of
using a custom support. Set max bulk read to
(32 / SAMPLE_SIZE) * SAMPLE_SIZE since spi_write_then_read() used in
regmap_spi indicates that is the max buffer length to use in order to
avoid a kmalloc for each bus access.
Remove lock mutex since concurrency is already managed by regmap API

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Lorenzo Bianconi 2018-01-01 19:54:44 +01:00 • committed by Greg Kroah-Hartman

parent 335eaedce4

commit 51a8b70762

6 changed files with 131 additions and 211 deletions

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2

drivers/iio/imu/st_lsm6dsx/Kconfig

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31

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h

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81

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c

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103

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c

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55

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c

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70

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c

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