From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Fuchs Subject: Re: [PATCH/RFC] serial: Add ioctl to enable auto rs485 mode with some Exar UARTs Date: Mon, 22 Dec 2008 19:02:27 +0100 Message-ID: <200812221902.27752.mfuchs@ma-fu.de> References: <200812190048.35249.mfuchs@ma-fu.de> <1229853004.3216.14.camel@thewinkle.toftronix.com.au> <20081222155956.GA13526@pengutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-in-12.arcor-online.net ([151.189.21.52]:37798 "EHLO mail-in-12.arcor-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753930AbYLVSCb (ORCPT ); Mon, 22 Dec 2008 13:02:31 -0500 In-Reply-To: <20081222155956.GA13526@pengutronix.de> Content-Disposition: inline Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Wolfram Sang Cc: linux-serial@vger.kernel.org Oops, I must admit that I was not aware of that thread. Mea culpa! I will go through those arguments and see if I can take some effort from that. Again, I will not take care of any software RS485 and I will never use any name that contains RTS. I will also keep my ioctl implementation instead of any termios stuff - when nobody contradicts. Matthias > Hello Chris, > > On Sun, Dec 21, 2008 at 08:50:04PM +1100, Chris Gibson wrote: > > Two and a half weeks ago I submitted a patch to implement RS485 auto > > direction control on either (or both) the RTS and the DTR lines with > > varying pre and post delay settings that would work for _all_ uarts that > > support mctrl. > > Just observing the case, I assume that this concern about software RS485 > is still valid: > > http://article.gmane.org/gmane.linux.serial/2568