I tried changing the flag to IRQF_TRIGGER_HIGH but then device is behaving abnormally(Hangs and is dead after some time).
Flooding interrupts still observed. Problem not solved.
I want to know, are we supposed to change interrupt pin status or it is done automatically when we return IRQ_HANDLED.
On Thu, Jun 14, 2012 at 12:21 PM, Sarbojit Ganguly <unixman.linuxboy@xxxxxxxxx> wrote:
Hi Arun,
While I agree to your pointers but he is facing the problem of
"interrupt floods" even before he touches.
IMHO the culprit could be the flag.
--
On 14 June 2012 12:01, Arun KS <getarunks@xxxxxxxxx> wrote:
> Hello Siddharth,
>
> On Thu, Jun 14, 2012 at 10:34 AM, siddharth saxena
> <siddharthsaxena1989@xxxxxxxxx> wrote:
>> Hi all
>>
>> I need help with an issue.
>> I have written a touch driver for a device and used the flag
>> IRQF_TRIGGER_LOW to request irq.
>> Now, when I boot the device, the touch interrupts are coming already without
>> touching the screen.
>> Continuous interrupts are occurring without any touch.
>
> Probably the default state of the gpio pin(which you configured as
> irq) is low. Check your HW schematic.
>
> TSC should have interrupt polarity(Active High/Low), which you have to
> choose depending on your schematic while initiallizing the TSC.
> Also different modes like assert interrupt when finger moving, when
> finger touch, or assert periodically.
>
> Hope these pointer will help you.
>
> Thanks,
> Arun
>
>>
>>
>>
>> --
>> Regards
>> Siddharth Saxena
>>
>>
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>
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Regards,
Sarbojit
--
Regards
Siddharth Saxena
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