linux-kernel - Re: [PATCH 6/7] [v2] tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver

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Message-ID: <CAOZdJXVyujA0fsnvYnCcqDYhmgYMk0DwBTh-wEkFN4fCDVYdcA@mail.gmail.com>
Date:	Sun, 3 Jul 2011 01:43:52 +0000
From:	Tabi Timur-B04825 <B04825@...escale.com>
To:	"greg@...ah.com" <greg@...ah.com>
CC:	Gala Kumar-B11780 <B11780@...escale.com>,
	"benh@...nel.crashing.org" <benh@...nel.crashing.org>,
	"akpm@...nel.org" <akpm@...nel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-console@...r.kernel.org" <linux-console@...r.kernel.org>,
	"alan@...rguk.ukuu.org.uk" <alan@...rguk.ukuu.org.uk>,
	"arnd@...db.de" <arnd@...db.de>
Subject: Re: [PATCH 6/7] [v2] tty/powerpc: introduce the ePAPR embedded
 hypervisor byte channel driver

On Thu, May 19, 2011 at 1:34 PM, Timur Tabi <timur@...escale.com> wrote:
> The ePAPR embedded hypervisor specification provides an API for "byte
> channels", which are serial-like virtual devices for sending and receiving
> streams of bytes.  This driver provides Linux kernel support for byte
> channels via three distinct interfaces:
>
> 1) An early-console (udbg) driver.  This provides early console output
> through a byte channel.  The byte channel handle must be specified in a
> Kconfig option.
>
> 2) A normal console driver.  Output is sent to the byte channel designated
> for stdout in the device tree.  The console driver is for handling kernel
> printk calls.
>
> 3) A tty driver, which is used to handle user-space input and output.  The
> byte channel used for the console is designated as the default tty.
>
> Signed-off-by: Timur Tabi <timur@...escale.com>

Greg, would you please pick up this patch for 3.1?  Patches 1-5 are
already queued through the PowerPC tree.

Thank you.

The patch is available here if you need to download it:
http://patchwork.ozlabs.org/patch/96443/

-- 
Timur Tabi
Linux kernel developer at Freescale
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