read_zsreg man page on Oracle

read_zsreg man page on Oracle

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READ_ZSREG(9)		      Internal Functions		 READ_ZSREG(9)

NAME
       read_zsreg - Read a register from a Z85230

SYNOPSIS
       u8 read_zsreg(struct z8530_channel * c, u8 reg);

ARGUMENTS
       c
	   Z8530 channel to read from (2 per chip)

       reg
	   Register to read

FIXME
       Use a spinlock.

       Most of the Z8530 registers are indexed off the control registers. A
       read is done by writing to the control register and reading the
       register back. The caller must hold the lock

AUTHOR
       Alan Cox <alan@lxorguk.ukuu.org.uk>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.8.	   June 2014			 READ_ZSREG(9)

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