From d088c33b646e9f3564eea7a057a2cb697c18bcd0 Mon Sep 17 00:00:00 2001
From: Elen Song <elen.song@atmel.com>
Date: Fri, 10 May 2013 11:00:50 +0800
Subject: [PATCH] DMA: AT91: Get transfer width

In one dma transfer, the data transfer width can be configured and it is limited by source or destination peripheral width,
tx_width will save the transfer width, but for memcpy, either source or destination transfer width is taken as tx_width.

Signed-off-by: Elen Song <elen.song@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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