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z8530_write_port(9) - phpMan

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Z8530_WRITE_PORT(9)                     Internal Functions                    Z8530_WRITE_PORT(9)



NAME
       z8530_write_port - Architecture specific interface function

SYNOPSIS
       void z8530_write_port(unsigned long p, u8 d);

ARGUMENTS
       p
           port to write

       d
           value to write

DESCRIPTION
       Write a value to a port with delays if need be. Note that the caller must hold locks to
       avoid read/writes from other contexts violating the 5uS rule

       In the longer term this should become an architecture specific section so that this can
       become a generic driver interface for all platforms. For now we only handle PC I/O ports
       with or without the dread 5uS sanity delay.

AUTHOR
       Alan Cox <alan AT lxorguk.uk>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                       Z8530_WRITE_PORT(9)


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