iio: temperature: mlx90632 Add runtime powermanagement modes

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The sensor can operate in lower power modes and even make measurements when
in those lower powered modes. The decision was taken that if measurement
is not requested within 2 seconds the sensor will remain in SLEEP_STEP
power mode, where measurements are triggered on request with setting the
start of measurement bit (SOB). In this mode the measurements are taking
a bit longer because we need to start it and complete it. Currently, in
continuous mode we read ready data and this mode is activated if sensor
measurement is requested within 2 seconds. The suspend timeout is
increased to 6 seconds (instead of 3 before), because that enables more
measurements in lower power mode (SLEEP_STEP), with the lowest refresh
rate (2 seconds).

Signed-off-by: Crt Mori <cmo@melexis.com>
Link: https://lore.kernel.org/r/be405068f081f2d518843897b13cd0289c280b5d.1663834141.git.cmo@melexis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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Crt Mori 2022-09-22 10:13:22 +02:00 • committed by Jonathan Cameron

parent 2a22b40aea

commit 2aebc223fc

1 changed files with 309 additions and 68 deletions

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drivers/iio/temperature/mlx90632.c

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