Ben_Nanonote keyboard driver bug

Ben_Nanonote keyboard driver bug

[Xiangfu Liu]

Hi 

with Dmitry's help, our keyboard is work.

we use the matrix_keypad.c driver. I found a problem.
for example. the keypad is like this: (part of keypad)  
GPIO    GPIO    GPIO
|       |       |  
a_______w_______u_____GPIO
|	|	|
|_______s_______j_____GPIO
|	|	|
Shift___Alt_____Ctrl__GPIO

first time press [Shift] + [a] it's output [a] not the [A]
second time press [Shift] + [a] it's output [A]. correct.
then all work fine.  but when I release the [Shift]. and press [a]
it's will also output big [A]. but if the midifier and character not 
in same column GPIO. it will work fine. 

other modifier all like this. same GPIO will cause problem.

I should look into the matrix_keypad.c to fix this, right?

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

Re: Ben_Nanonote keyboard driver bug

[Dmitry Torokhov]

On Friday 18 September 2009 12:43:22 am Xiangfu Liu wrote:
> Hi
> 
> with Dmitry's help, our keyboard is work.
> 
> we use the matrix_keypad.c driver. I found a problem.
> for example. the keypad is like this: (part of keypad)
> GPIO    GPIO    GPIO
> 
> a_______w_______u_____GPIO
> 
> |_______s_______j_____GPIO
> 
> Shift___Alt_____Ctrl__GPIO
> 
> first time press [Shift] + [a] it's output [a] not the [A]
> second time press [Shift] + [a] it's output [A]. correct.
> then all work fine.  but when I release the [Shift]. and press [a]
> it's will also output big [A]. but if the midifier and character not
> in same column GPIO. it will work fine.
> 
> other modifier all like this. same GPIO will cause problem.
> 
> I should look into the matrix_keypad.c to fix this, right?
> 

It would be interesting to see what events are being reported by either evbug 
module or evtest utility.

-- 
Dmitry

Re: Ben_Nanonote keyboard driver bug

[Xiangfu Liu]

Dmitry Torokhov wrote:
> On Friday 18 September 2009 12:43:22 am Xiangfu Liu wrote:
>> Hi
>>
>> with Dmitry's help, our keyboard is work.
>>
>> we use the matrix_keypad.c driver. I found a problem.
>> for example. the keypad is like this: (part of keypad)
>> GPIO    GPIO    GPIO
>>
>> a_______w_______u_____GPIO
>>
>> |_______s_______j_____GPIO
>>
>> Shift___Alt_____Ctrl__GPIO
>>
>> first time press [Shift] + [a] it's output [a] not the [A]
>> second time press [Shift] + [a] it's output [A]. correct.
>> then all work fine.  but when I release the [Shift]. and press [a]
>> it's will also output big [A]. but if the midifier and character not
>> in same column GPIO. it will work fine.
>>
>> other modifier all like this. same GPIO will cause problem.
>>
>> I should look into the matrix_keypad.c to fix this, right?
>>
> 
> It would be interesting to see what events are being reported by either evbug 
> module or evtest utility.
> 
Hi Dmitry. I will try to look into the evbug or evtest. 
will send email when I have progress.

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