Re: Writing a console/tty driver -- how to use tty_port?

From: Arnd Bergmann
Date: Thu Oct 28 2010 - 16:57:48 EST


On Wednesday 27 October 2010 23:04:13 Timur Tabi wrote:
> Do you have an updated version of Tiny TTY that uses tty_port structures? I'm
> trying to write a new TTY driver for a device that is not a UART, and I'm having
> a hard time finding a good example. I suspect I need to understand the tty_port
> structure, but I can't find any documentation for it.

If the device is not a UART, the best option may be to make the driver
a backend to the hvc driver, like e.g. drivers/char/hvc_tile.c.

This works for all devices with or without interrupts that don't need
to set up the communication parameters but simply provide a read/write
character interface.

Arnd
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