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iio: add LM3533 ambient-light-sensor driver

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Add sub-driver for the ambient-light-sensor interface on National
Semiconductor / TI LM3533 lighting power chips.

The sensor interface can be used to control the LEDs and backlights of
the chip through defining five light zones and three sets of
corresponding output-current values.

The driver provides raw and mean adc readings along with the current
light zone through sysfs. A threshold event can be generated on zone
changes. The ALS-control output values can be set per zone for the three
current output channels.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold
2012-05-21 14:18:06 +02:00
committed by Greg Kroah-Hartman
parent 2979460d7a
commit 9c8ea1b29b
6 changed files with 1023 additions and 0 deletions
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5
drivers/iio/light/Makefile Normal file
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#
# Makefile for IIO Light sensors
#
obj-$(CONFIG_SENSORS_LM3533) += lm3533-als.o