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SubjectRe: [PATCH v2 2/4] da850-evm: add UI Expander pushbuttons
On Mon, Nov 22, 2010 at 6:49 AM, Nori, Sekhar <> wrote:
> On Fri, Nov 19, 2010 at 21:08:10, Ben Gardiner wrote:
>> [...]
>> By setting INPUT_POLLDEV default for the da850-evm users will get
>> functioning pushbuttons and switches with the default config but they
>> will be able to disable INPUT_POLLDEV or gpio-keys drivers in their
>> defconfig at their convenience.
> I guess we could also just modify the defconfig to switch on
> INPUT_POLLDEV? Since only gpio-keys functionality is affected
> by not enabling the correct options in kernel, it should be OK.

Yes -- only gpio-keys is affected but enabling the option does
introduce an additional .o file:

drivers/input/Makefile:obj-$(CONFIG_INPUT_POLLDEV) += input-polldev.o

I agree that in its current state a user couls inadvertently disable
the gpio-keys support on da850-evm simply by disabling INPUT_POLLDEV
-- which is less than Ideal. How about I replace the current changes
to arch/arm/mach-davinci/Kconfig with:


So 1) gpio-keys functionality is default for the da850evm and 2)
whenever gpio-keys is enabled so is INPUT_POLLDEV.

Best Regards,
Ben Gardiner

Nanometrics Inc.

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