Re: [PARPORT] X10 TW523 Send/Receive Linux Parallel Port Device Driver

From: Philippe Tanguay (
Date: Thu Jul 25 2002 - 09:47:46 EDT

  • Next message: Tim Waugh: "Re: [PARPORT] X10 TW523 Send/Receive Linux Parallel Port Device Driver"

    Hi guys ...

    I can't say that I'm off to a roaring start ....

    I can't seem to get my interrupt handler "registered". When I check
    /proc/interrupts, irq is not listed. When I trigger it, nothing happens.

    When I load the parport module, it does detect irq 7. In the init section of
    my driver, I pass my function pointer to parport_register_device, call
    parport_enable_irq and finally write the correct value to the control

    Is there a subtelty I'm missing ?

    Thanks !

    On Wed, 24 Jul 2002, Tim Waugh wrote:

    > On Wed, Jul 24, 2002 at 09:56:28AM -0400, Philippe Tanguay wrote:
    > > * I think the 2.2 driver uses the "old" style parport linux driver. Would
    > > it be worthwhile to make it use the newer interface ? I found the parport
    > > programming howto written by Tim Waugh, but it certainly doesn't match the
    > > API used in the 2.2 driver (haven't found any info on that...)
    > Yes.
    > > * Regardless of which parport API I go with, how do I hookup
    > > interrupts to be fired when the ACK pin is triggered (I know about
    > > the interuppt enable bit in the port control register, I need info
    > > on how to install an interrupt handler in parport framework) ?
    > The irq_func parameter of parport_register_device.
    > Tim.
    > */

    -- To unsubscribe, send mail to: --
    -- with the single word "unsubscribe" in the body of the message. --

    This archive was generated by hypermail 2b29 : Thu Jul 25 2002 - 09:49:42 EDT