Hi Arun 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 < [email protected]> 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 <[email protected]> wrote: > > Hello Siddharth, > > > > On Thu, Jun 14, 2012 at 10:34 AM, siddharth saxena > > <[email protected]> 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 > >> > >> > >> _______________________________________________ > >> Kernelnewbies mailing list > >> [email protected] > >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > >> > > > > _______________________________________________ > > Kernelnewbies mailing list > > [email protected] > > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > > -- > Regards, > Sarbojit > -- Regards Siddharth Saxena
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