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Debian TCA8414 keyboard scanner driver integration question

Doug Daman
Prodigy 40 points

Other Parts Discussed in Thread: PCF8575, TCA8418

Does anyone have any advice on integrating a TI TCA8414 i2c keyboard scanner IC to an Olimex A20 running Debian?  I2Cdetect detects the IC, the i2c driver initializes and the TCA8414 Linux driver gets partially initialized, but fails when initializing the IRQ.  We think platform data is correct.  That was an earlier problem.  Other devices, including a TI PCF8575 I/O expander, are working on the same bus.

  • 0
    TI__Genius 16560 points
    Hello Doug,

    Unfortunately, I am not familiar with debian.

    TI has not released any drivers for the TCA8418. Are you using the open source community-developed linux driver floating around the web?

    My guess is that the IRQ initialization is different with your specific variant of debian.
  • 0 in reply to Jonathan Valdez
    Prodigy 40 points

    Hello Jonathan,

    Yes, we  are using the open source TCA8414 Linux driver version 4.8.  It doesn't seem to be seeing the IRQ yet, like the logical and physical IRQ assignments are different.  The TCA8414 is generating interruptsand those are being provided to EINT24.

    Doug