From 063df567b94ad594c633e85aef177d9b3bcdbe35 Mon Sep 17 00:00:00 2001
From: Alison Wang <b18965@freescale.com>
Date: Wed, 26 Jul 2017 13:55:53 +0800
Subject: driver: mtd: update struct map_info's swap as per map requirement

It is not necessary for all device's maps to be CFI_HOST_ENDIAN. Maps
device can be big endian or little endian.

Currently it is being taken care using CONFIG_MTD_CFI_LE_BYTE_SWAP or
CONFIG_MTD_CFI_BE_BYTE_SWAP i.e. compile time.

Now update struct map_info's swap field based on device characteristics
defined in device tree.

Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>

diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c
index 3fad359..f720a96 100644
--- a/drivers/mtd/maps/physmap_of.c
+++ b/drivers/mtd/maps/physmap_of.c
@@ -20,6 +20,7 @@
 #include <linux/mtd/map.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/concat.h>
+#include <linux/mtd/cfi_endian.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
@@ -247,6 +248,9 @@ static int of_flash_probe(struct platform_device *dev)
 			return err;
 		}
 
+		if (of_property_read_bool(dp->parent, "big-endian"))
+			info->list[i].map.swap = CFI_BIG_ENDIAN;
+
 		err = -ENOMEM;
 		info->list[i].map.virt = ioremap(info->list[i].map.phys,
 						 info->list[i].map.size);
-- 
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