From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver Date: Fri, 8 Jul 2011 15:06:54 -0700 Message-ID: <20110708220654.GA19146@kroah.com> References: <1305830092-20104-1-git-send-email-timur@freescale.com> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=messagingengine.com; h=date:from:to:cc:subject:message-id:references:mime-version:content-type:in-reply-to; s=smtpout; bh=nZX/yUK7Mhs/F9kIiC+j9eZnBzI=; b=c3x+jyVsECqKLbWvnByJJTufnDaait1YGiv47IlPbOqGKJNeVNtU91DefJU1Z9WgMWhXlrpu6V8Q5c0n9Wq+kYffMkP+KxGpLLb9WgJvDRqQywhZPcwj7SCZPm3mhzRMXZIU05VMuHzeG/U4vsZLCSF9s47VG5BGf7CFE52K18I= Content-Disposition: inline In-Reply-To: <1305830092-20104-1-git-send-email-timur@freescale.com> Sender: linux-console-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Timur Tabi Cc: kumar.gala@freescale.com, benh@kernel.crashing.org, akpm@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-console@vger.kernel.org, alan@lxorguk.ukuu.org.uk, arnd@arndb.de On Thu, May 19, 2011 at 08:34:52AM -0000, Timur Tabi 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 Doesn't apply at all to the tty-next tree, so I can't apply it here :(