custom baud rates with serial core

custom baud rates with serial core

[Mike Frysinger]

is there a method for setting custom baud rates that doesnt cause a
"deprecated" message from showing up ?  for example:
# setserial -a /dev/ttyBF0 divisor 9 spd_cust
setserial sets custom speed on ttyBF0. This is deprecated.

my reading of the serial core code is that the only way to specify a
baud rate that does not appear in the B* define list is by setting
your baud to B38400 and utilizing UPF_SPD_CUST.  this ends up in the
deprecated warning code though in uart_set_info().

if it's deprecated in favor of something nicer, that's fine, but i
cant find out what that "nicer" thing is ...
-mike

Re: custom baud rates with serial core

[Alan Cox]

On Fri, 3 Aug 2007 19:59:51 -0400
"Mike Frysinger" <vapier.adi@gmail.com> wrote:

> is there a method for setting custom baud rates that doesnt cause a
> "deprecated" message from showing up ?  for example:
> # setserial -a /dev/ttyBF0 divisor 9 spd_cust
> setserial sets custom speed on ttyBF0. This is deprecated.

If your platform is up to date then you can set arbitary speeds via the
TIOCGETS2/TIOCSETS2 ioctls. Not all platforms support this yet although
I'm working on getting the sane ones all upstream and sorted. Once that
is done glibc will be able to switch internally to TIOCGETS2/SETS2 for
the termios operations it provides and the world will be a far happier
place ...