staging:iio: add a raw and processed elements to info_mask
This will allow us to have drivers where the channel value may not be read or written but other information is available. Also adds the ability to have both processed and raw access to a given channel, though in most cases this doesn't make sense. Ultimately will lead to simpler code by allowing us to drop the special case handling for the value reading cases. Signed-off-by: NJonathan Cameron <jic23@kernel.org> Acked-by: NLars-Peter Clausen <lars@metafoo.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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