# Re: \[PATCH V3 2/2\] drivers: input: keyboard: add mtk keypad driver

- From: Andy Shevchenko \<andriy.shevchenko@linux.intel.com\>
- Date: 2020-02-18 15:51:52 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2020/02/5866104
- Thread: https://ratatoskr.run/linux-devicetree/2020/02/5866104/t.md

```text
On Tue, Feb 18, 2020 at 04:14:24PM +0100, Fabien Parent wrote:
> On Tue, Jan 14, 2020 at 1:39 PM fengping.yu [ref] wrote:

...

> > +#define KP_STA                         0x0000
> > +#define KP_MEM1                                0x0004
> > +#define KP_MEM2                                0x0008
> > +#define KP_MEM3                                0x000c
> > +#define KP_MEM4                                0x0010
> > +#define KP_MEM5                                0x0014
> > +#define KP_DEBOUNCE                    0x0018
> > +#define KP_SEL                         0x0020
> > +#define KP_EN                          0x0024

...

> > +#define KPD_NUM_MEMS   5
> > +#define KPD_MEM5_BITS  8
> > +#define KPD_NUM_KEYS   72      /* 4 * 16 + KPD_MEM5_BITS */

> > +       kpd_get_keymap_state(keypad->base, new_state);
> 
> kpd_get_keymap_state(keypad->base + KP_MEM1, new_state);

Why?

-- 
With Best Regards,
Andy Shevchenko



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```