From: Elen Song <elen.song@atmel.com>
Date: Mon, 22 Jul 2013 08:30:26 +0000 (+0800)
Subject: serial: at91: add tx dma support
X-Git-Tag: v3.12-rc1~182^2~106
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08f738be88bb7a0163afd810a19b9cb13c79808f;p=pandora-kernel.git

serial: at91: add tx dma support

Request a slave dma channel for tx dma use. Tx dma will setup a single transfer,
when transfer complete, it will call atmel_complete_tx_dma to do finish stuff.

Signed-off-by: Elen Song <elen.song@atmel.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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