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authorPrabhakar Kushwaha <prabhakar.kushwaha@nxp.com>2018-03-28 11:15:52 +0530
committerBoris Brezillon <boris.brezillon@bootlin.com>2018-03-29 09:31:37 +0200
commit7d5cba597dbfc55c43761e255f1be646ef3ab633 (patch)
treea4376cb1ba0197dab5fb145c405af070f6764f5f /drivers/mtd
parent147395ea40b36b8652b6df3e50a1cb745be75c93 (diff)
mtd: physmap_of: 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: Jagdish Gediya <jagdish.gediya@nxp.com> Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/maps/physmap_of_core.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/maps/physmap_of_core.c b/drivers/mtd/maps/physmap_of_core.c
index b1bd4faecfb2..527b1682381f 100644
--- a/drivers/mtd/maps/physmap_of_core.c
+++ b/drivers/mtd/maps/physmap_of_core.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>
@@ -233,6 +234,11 @@ static int of_flash_probe(struct platform_device *dev)
info->list[i].map.bankwidth = be32_to_cpup(width);
info->list[i].map.device_node = dp;
+ if (of_property_read_bool(dp, "big-endian"))
+ info->list[i].map.swap = CFI_BIG_ENDIAN;
+ else if (of_property_read_bool(dp, "little-endian"))
+ info->list[i].map.swap = CFI_LITTLE_ENDIAN;
+
err = of_flash_probe_gemini(dev, dp, &info->list[i].map);
if (err)
goto err_out;