RE: Serial custom speed deprecated?

From: Stuart MacDonald
Date: Fri Aug 25 2006 - 10:59:23 EST


From: On Behalf Of Alan Cox
> At this point I think we need
>
> - An ioctl to set/get the actual baud rate input/output
> - Some kind of termios flag to indicate they are being
> used (as we have
> CBAUDEX now). [We could "borrow" the 4Mbit one and dual use it IMHO]
>
> For drivers tty_get_baud_rate would return the actual speed as before.
>
> We would need a driver ->set_speed method for the cases where
> - ioctl is called to set specific board rate
> - OR termios values for tty speed change
> - While we are at it we might want to make ->set_termios also
> allowed to fail
>
> [and if you had no ->set_speed method non standard speeds would be
> refused by the tty layer for back compat]
>
> Anyone got any problems with this before I go and implement it ?

Sounds good.

..Stu

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