From: Elen Song <elen.song@atmel.com>
Date: Mon, 22 Jul 2013 08:30:30 +0000 (+0800)
Subject: serial: at91: make UART support dma and pdc transfers
X-Git-Tag: v3.12-rc1~182^2~102
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e68c22fde9b001e41d47185a5b7612da60d8c33;p=pandora-kernel.git

serial: at91: make UART support dma and pdc transfers

Because the UART lack of receive timeout register, so we use a timer to trigger
data receive.
The DBGU is regarded as UART.

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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