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  1. Oct 21, 2011
    • Kyle Moffett's avatar
      mpc85xx: Add inline GPIO acessor functions · 710308ee
      Kyle Moffett authored
      
      To ease the implementation of other MPC85xx board ports, several common
      GPIO helpers are added to <asm/mpc85xx_gpio.h>.
      
      Since each of these compiles to no more than 4-5 instructions it would
      be very inefficient to call them out of line, therefore we put them
      entirely in the header file.
      
      The HWW-1U-1A board port which these were written for strongly prefers
      to set multiple GPIOs as a single batch operation, so the API is
      designed around that basis.
      
      To assist other board ports, a small set of wrappers are used which
      provides a standard gpio_request() interface around the MPC85xx-specific
      functions.  This can be enabled with CONFIG_MPC85XX_GENERIC_GPIO
      
      Signed-off-by: default avatarKyle Moffett <Kyle.D.Moffett@boeing.com>
      Cc: Andy Fleming <afleming@gmail.com>
      Cc: Peter Tyser <ptyser@xes-inc.com>
      Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
      710308ee
  2. Oct 20, 2011
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