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 >> >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies -- Regards, Sarbojit _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
