From 265567fbca7136f1cf45cb49a630cf7109a2308a Mon Sep 17 00:00:00 2001
From: Torsten Fleischer <torfl6749@gmail.com>
Date: Mon, 23 Feb 2015 17:54:11 +0100
Subject: [PATCH] dmaengine: at_hdmac: Add support for memory to memory sg
 transfers

This patch adds support for memory to memory scatter-gather transfers.

Changes from V1:
   * Fixed coding style of the multi-line comments.

Changes from V2:
   * Added setup of 'desc->tx_width' that is needed to calculate the
     residue.

Signed-off-by: Torsten Fleischer <torfl6749@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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