iio: mxs-lradc: add scale attribute to channels

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Some LRADC channels have fixed pre-dividers and all have an optional
divider by two which allows a maximum input voltage of VDDIO - 50mV.

This patch
 - adds the scaling info flag to all channels
 - grabs the max reference voltage per channel
   (where the fixed pre-dividers apply)
 - allows to read the scaling attribute (computed from the Vref)

Signed-off-by: Hector Palacios <hector.palacios@digi.com>.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

...

This commit is contained in:

Hector Palacios 2013-12-23 17:48:00 +00:00 • committed by Jonathan Cameron

parent 971672c0b3

commit f6db68a405

1 changed files with 54 additions and 2 deletions

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drivers/staging/iio/adc/mxs-lradc.c

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