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

Hi Jonathan,

On Monday 16 September 2013 17:30:32 Jonathan Cameron wrote:

quoted

On Sunday 15 September 2013 12:56:25 Jonathan Cameron wrote:

quoted

On 09/11/13 09:18, Juergen Beisert wrote:

quoted

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 <redacted>
CC: linux-arm-kernel at lists.infradead.org
CC: devel at driverdev.osuosl.org
CC: Marek Vasut <marex@denx.de>
CC: Fabio Estevam <redacted>
CC: Jonathan Cameron <redacted>

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

-- 
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