iio: adc: Add imx25-gcq ADC driver

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This is a conversion queue driver for the mx25 SoC. It uses the central
ADC which is used by two seperate independent queues. This driver
prepares different conversion configurations for each possible input.
For a conversion it creates a conversionqueue of one item with the
correct configuration for the chosen channel. It then executes the queue
once and disables the conversion queue afterwards.

The reference voltages are configurable through devicetree subnodes,
depending on the connections of the ADC inputs.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Denis Carikli <denis@eukrea.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

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Markus Pargmann 2015-12-14 14:53:51 +01:00 • committed by Lee Jones

parent e2fccf5c15

commit 6df2e98c3e

3 changed files with 425 additions and 0 deletions

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7

drivers/iio/adc/Kconfig

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1

drivers/iio/adc/Makefile

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417

drivers/iio/adc/fsl-imx25-gcq.c

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