* MX21 keypad driver interrupt issue
[not found] <e65b9ae80611212102x2836f2d3ycb38a90ece2c4364@mail.gmail.com>
@ 2006-11-22 5:15 ` Dilan Weerakkody
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From: Dilan Weerakkody @ 2006-11-22 5:15 UTC (permalink / raw)
To: linux-kernel
hi all,
i writing keypad driver on
*mx21 ads board for
* kernel 2.6.14
i got a problem on interrupt handling ,
the isr routine for kpp
1.when interrupt occur first i disable interrupt by clear KRIE and KDIE bit
2.next i scan key pad matrix
3.clear KPDK bit (but when i read this bit i can see that KPDK flag
bit is still not cleared)
4.then i enable KDIE bit again
all above 1,2,3,4 written within interrupt handler (is this a problem?);
my problem is KPP interrupt handler run over and over again after once
i touch a key and release it
please help
thanks
dilan
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[not found] <e65b9ae80611212102x2836f2d3ycb38a90ece2c4364@mail.gmail.com>
2006-11-22 5:15 ` MX21 keypad driver interrupt issue Dilan Weerakkody
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