Re: [PATCH], tiser module: TI graphing calculators

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sat, 16 Mar 2002 17:49:33 +0000 (GMT)

> This driver directly accesses some UART registers in a way similar to
> serial.c.
> A better method should be to do some ioctl for toggling UART lines
> rather than by-passing the ttySx driver.

TIOCM* sounds promising. You ought to be able to bitbang enough lines in
user space not to need a driver.
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