Date: Thu, 18 Nov 2010 20:56:47 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Timur Tabi <timur@freescale.com>
Cc: Greg KH <gregkh@suse.de>, Arnd Bergmann <arnd@arndb.de>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Scott Wood <scottwood@freescale.com>,
        Stuart Yoder <stuart.yoder@freescale.com>
Subject: Re: How do I choose an arbitrary minor number for my tty device?
Message-ID: <20101118205647.677404ec@lxorguk.ukuu.org.uk>
In-Reply-To: <4CE58FE5.3010502@freescale.com>
References: <20101118163321.GA2723@suse.de>
	<4CE5562B.8080604@freescale.com>
	<20101118165136.GA3103@suse.de>
	<4CE55ACB.80207@freescale.com>
	<20101118171856.GA4283@suse.de>
	<4CE5647F.5000203@freescale.com>
	<20101118175832.GA4931@suse.de>
	<4CE58005.7040308@freescale.com>
	<20101118200230.GA25715@suse.de>
	<4CE58736.4090703@freescale.com>
	<20101118201035.GA26287@suse.de>
	<4CE58FE5.3010502@freescale.com>
Face: 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
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 916
Lines: 23

On Thu, 18 Nov 2010 14:43:17 -0600
Timur Tabi <timur@freescale.com> wrote:

> Greg KH wrote:
> >> > One last question.  If I create multiple TTY devices, how do I tell the kernel
> >> > which one should be used for the console?
> 
> > On the command line.
> 
> Is there a way to do it in the driver itself?  Getting the boot loader to
> identify the specific byte channel for stdout isn't trivial.  It'd be nice if
> the driver could tell the tty layer, "BTW, this use this for the default console".

You can - provide the required method in your console driver and it'll
get used by /dev/console. Funnily enough a lot of other platform and
consoles need that too.

Alan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/