Re: [Gta04-owner] [PATCH 0/4] UART slave device support - version 4

From: Dmitry Torokhov
Date: Wed Jan 20 2016 - 14:38:53 EST

On Fri, Jan 15, 2016 at 11:34 PM, Vostrikov Andrey
<andrey.vostrikov@xxxxxxxxxxxxxxxxxx> wrote:
> Yes, such implementation will help. There is a need for interface like UART BUS that will probe devices without user space.
> Serial I/O for input subsystem defines new type of bus and uses dedicated line discipline, but it still unable to start driver by itself and requires call from 'inputattach' to open port, assign line discipline and go to forever wait on 'read'.

That was done mainly because almost none of the serial protocols could
be auto-probed, so device initialization/setup was moved out of kernel
and thus we have the separate line discipline and inputattach utility.