[PATCH 5/6] Staging/iio/adc/touchscreen/MXS: add interrupt driven touch detection

[Jonathan Cameron]

.

"Jürgen Beisert" <jbe at pengutronix.de> wrote:
>Hi Jonathan,
>
>On Monday 16 September 2013 17:30:32 Jonathan Cameron wrote:
>> >On Sunday 15 September 2013 12:56:25 Jonathan ,,, wrote:
>> >> On 09/11/13 09:18, Juergen Beisert wrote:
>> >> > For battery driven systems it is a very bad idea to collect the
>> >> > touchscreen data within a kernel busy loop.
>> >> >
>> >> > This change uses the features of the hardware to delay and
>> >> > accumulate samples in hardware to avoid a high interrupt and CPU
>load.
>> >> >
>> >> > Note: this is only tested on an i.MX23 SoC yet.
>> >> >
>> >> > Signed-off-by: Juergen Beisert <jbe at pengutronix.de>
>> >> > CC: linux-arm-kernel at lists.infradead.org
>> >> > CC: devel at driverdev.osuosl.org
>> >> > CC: Marek Vasut <marex at denx.de>
>> >> > CC: Fabio Estevam <fabio.estevam at freescale.com>
>> >> > CC: Jonathan Cameron <jic23 at cam.ac.uk>
>> >>
>> >> While this driver is placed in IIO within staging at the moment,
>> >> these changes are definitely input related.  Hence I have cc'd
>Dmitry and
>> >> the input list.
>> >>
>> >> I am personaly a little uncomfortable that we have such a complex
>bit
>> >> of input code sat within an IIO driver but such is life.
>> >
>> > Maybe an MFD for this ADC unit would be a better way to go?
>>
>> That would be great and is definitely the preferred method.
>
>Cannot continue to convert the driver into an MFD device. The project
>does not 
>give me the time to do so.
>
>Regards,
>Juergen

Fair enough. Perhaps someone else will pick up the gauntlet :) 
The old call of why there isn't enough time in the day!

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