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SubjectRe: [PATCH v2] input: MXC: add mxc-keypad driver to support the Keypad Port present in the mxc application processors family.
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Hi Dmitry! Thanks for reviewing!

On mar, 2010-01-26 at 01:52 -0800, Dmitry Torokhov wrote:
> > This algorithm is done via a threaded management of the keypad interrupt source
> > and delayed by a proper (and longer) debounce interval controlled by the
> > platform initialization.
>
> This I am not so sure about - the core of the matrix scan routine does
> not sleep so I wonder if starting a separate thread is not too wasteful
> in this case - you can easily do whan you want with a timer, no?

I'm pretty new to kernel programming and, from the university, the
threaded way looked the better (and unique) for me..
Let me find some documentation on timers and I will restructure the
interrupt management. Yes I need only to delay the matrix-scan activity
without waste cpu time.

>
> > +
> > + /*
> > + * Search for rows and cols enabled
> > + */
> > + keymap_data = (struct matrix_keymap_data *) pdata->keymap_data;
>
> Why do you need to cast away constness instead of declaring keymap_data
> as const pointer?

In next version will be fixed.

Alberto!




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