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  1. 10 Jan, 2018 1 commit
    • William Breathitt Gray's avatar
      gpio: Add GPIO support for the ACCES PCIe-IDIO-24 family · 58556204
      William Breathitt Gray authored
      The ACCES PCIe-IDIO-24 device provides 56 lines of digital I/O (24 lines
      of optically-isolated non-polarized digital inputs for AC and DC control
      signals, 24 lines of isolated solid state FET digital outputs, and 8
      non-isolated TTL/CMOS compatible programmable I/O). An interrupt is
      generated when any of the inputs change state (low to high or high to
      low).
      
      Input filter control is not supported by this driver, and input filters
      are deactivated by this driver. These devices are capable of
      get_multiple and set_multiple functionality, but these functions have
      not yet been implemented for this driver. Change-Of-State (COS)
      detection functionality may be configured to fire interrupts on
      exclusively rising/falling edges, but this driver currently only
      implements COS detection for either both edges or none.
      Signed-off-by: default avatarWilliam Breathitt Gray <vilhelm.gray@gmail.com>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      58556204
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