Xingyu Chen 30e7250dfd
saradc: refactor the driver based on the iio sub-system ...
PD#146222: saradc: refactor the driver based on the iio sub-system
the sar adc driver has been moved from directory input/saradc
into directory iio/adc, and is refactored base on the standard
iio sub-system.
the iio sub-system provide two ways to access sar adc resources:
1. standard api for consumer driver
it can be found at the file "include/linux/iio/consumer.h".
2. sysfs interface for user space(X: 0-7)
- obtain 10-bit sample value:
cat sys/bus/iio/devices/iio:device0/in_voltage[X]_input
- obtain raw sample value(10-bit or 12-bit):
cat sys/bus/iio/devices/iio:device0/in_voltage[X]_raw
- obtain mean raw sample value:
cat sys/bus/iio/devices/iio:device0/in_voltage[X]_mean_raw
test pass on the gxl skt, axg skt, m200.
Change-Id: I6c8877c782c51a01993557cabc0d43f212a8e524
Signed-off-by: xingyu.chen <xingyu.chen@amlogic.com >
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30e7250dfd
