what is the meaning of matrix_keypad_platform_data.active

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* what is the meaning of matrix_keypad_platform_data.active_low
@ 2009-08-25  7:18 Xiangfu Liu
  2009-08-25 10:21 ` Marek Vasut
  0 siblings, 1 reply; 2+ messages in thread
From: Xiangfu Liu @ 2009-08-25  7:18 UTC (permalink / raw)
  To: linux-kernel; +Cc: linux-input

Hi
./include/linux/input/matrix_keypad.h 
there no help in matrix_keypad.h about active_low.

I guess. when set active_low to 1.means:

0: key press
1: key not press

right?

thanks for help.

-- 
Xiangfu Liu
Email: xiangfu at qi-hardware dot com
Web: http://www.qi-hardware.com

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: what is the meaning of matrix_keypad_platform_data.active_low
  2009-08-25  7:18 what is the meaning of matrix_keypad_platform_data.active_low Xiangfu Liu
@ 2009-08-25 10:21 ` Marek Vasut
  0 siblings, 0 replies; 2+ messages in thread
From: Marek Vasut @ 2009-08-25 10:21 UTC (permalink / raw)
  To: Xiangfu Liu; +Cc: linux-kernel, linux-input

Dne Út 25. srpna 2009 09:18:23 Xiangfu Liu napsal(a):
> Hi
> ./include/linux/input/matrix_keypad.h
> there no help in matrix_keypad.h about active_low.
>
> I guess. when set active_low to 1.means:
>
> 0: key press
> 1: key not press
>
> right?

Hi, yeah, it means the GPIO pins have inverted voltage levels.
>
> thanks for help.
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^ permalink raw reply	[flat|nested] 2+ messages in thread

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2009-08-25  7:18 what is the meaning of matrix_keypad_platform_data.active_low Xiangfu Liu
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