On 08/27/2012 04:01 PM, Linus Walleij wrote:
>Signed-off-by: Christopher Heiny<cheiny@xxxxxxxxxxxxx>
>+#include <linux/hrtimer.h>
>+#include <linux/kernel.h>
>+#include <linux/rmi.h>
>+#include <linux/slab.h>
>+#include <linux/version.h>
>+#include <linux/delay.h>
This is not using the existing in-kernel framework for ADC (which I think is
what you're doing), in this case use the IIO subsystem so consult
drivers/iio/adc and be inspired.
Just exposing a set of weird sysfs files to userspace is not proper.
I don't think the Industrial I/O ADC framework is appropriate for this.
F54 isn't intended to provide access to a general purpose ADC feature,
but rather for diagnostic access to the touchscreen's capacitive sense
features, which results in a fairly weird (as you noticed) interface.
Trying to hammer on it to fit into iio/adc would require a lot of
effort, and wind up making it look like something it really isn't.
However, it makes sense to move this whole interface to debugfs, given
its intended model of use.
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