linux-kernel - Re: [PATCH v1] 8250: add support for DTR/DSR hardware flow control

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Message-ID: <20080813123908.353cc083@lxorguk.ukuu.org.uk>
Date:	Wed, 13 Aug 2008 12:39:08 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"Tosoni" <jp.tosoni@...sys.fr>
Cc:	"'Laurent Pinchart'" <laurentp@...-semaphore.com>,
	"'Aristeu Rozanski'" <arozansk@...hat.com>,
	<linux-serial@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1] 8250: add support for DTR/DSR hardware flow control

> About a RS485 ioctl: could you consider the attached files which are already
> in the Linux kernel (in include/asm-cris).
> They define a TIOCSERSETRS485 (ioctl.h), and the data structure (rs485.h)
> with allows to specify timings. Sounds just like what we want ?

That would make sense for hardware assisted RS485 but we still have to
sort out DTR/DSR as well
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