From b523b3bac3a745fefd6f604082f2ffa09b808e5e Mon Sep 17 00:00:00 2001
From: Joern Engel <joern@wohnheim.fh-wedel.de>
Date: Sun, 18 Sep 2005 11:46:45 +0100
Subject: [PATCH] [MTD] maps: Add support for MTX-1 Flash device

Add support for "4G Systems MTX-1 Flash device", better known as meshcube.

From: Bruno Randolf <bruno.randolf@4g-systems.biz>
Signed-off-by: Joern Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 drivers/mtd/maps/Kconfig       |  9 +++-
 drivers/mtd/maps/Makefile      |  3 +-
 drivers/mtd/maps/mtx-1_flash.c | 96 ++++++++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+), 2 deletions(-)
 create mode 100644 drivers/mtd/maps/mtx-1_flash.c

diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 8e3e93d62525..7f1ce08fb7b1 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -1,5 +1,5 @@
 # drivers/mtd/maps/Kconfig
-# $Id: Kconfig,v 1.58 2005/09/14 19:14:13 tpoynor Exp $
+# $Id: Kconfig,v 1.59 2005/09/18 10:46:41 joern Exp $
 
 menu "Mapping drivers for chip access"
 	depends on MTD!=n
@@ -214,6 +214,13 @@ config MTD_ALCHEMY
 	help
 	  Flash memory access on AMD Alchemy Pb/Db/RDK Reference Boards
 
+config MTD_MTX1
+	tristate "4G Systems MTX-1 Flash device"
+	depends on MIPS && MIPS_MTX1
+	help
+	  Flash memory access on 4G Systems MTX-1 Board. If you have one of
+	  these boards and would like to use the flash chips on it, say 'Y'.
+
 config MTD_DILNETPC
 	tristate "CFI Flash device mapped on DIL/Net PC"
 	depends on X86 && MTD_CONCAT && MTD_PARTITIONS && MTD_CFI_INTELEXT
diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
index 095517847c77..2afa80678d53 100644
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -1,7 +1,7 @@
 #
 # linux/drivers/maps/Makefile
 #
-# $Id: Makefile.common,v 1.31 2005/09/14 19:14:13 tpoynor Exp $
+# $Id: Makefile.common,v 1.32 2005/09/18 10:46:41 joern Exp $
 
 ifeq ($(CONFIG_MTD_COMPLEX_MAPPINGS),y)
 obj-$(CONFIG_MTD)		+= map_funcs.o
@@ -71,3 +71,4 @@ obj-$(CONFIG_MTD_SHARP_SL)	+= sharpsl-flash.o
 obj-$(CONFIG_MTD_PLATRAM)	+= plat-ram.o
 obj-$(CONFIG_MTD_OMAP_NOR)	+= omap_nor.o
 obj-$(CONFIG_MTD_PQ2FADS)	+= pq2fads.o
+obj-$(CONFIG_MTD_MTX1)		+= mtx-1_flash.o
diff --git a/drivers/mtd/maps/mtx-1_flash.c b/drivers/mtd/maps/mtx-1_flash.c
new file mode 100644
index 000000000000..43f4416a611a
--- /dev/null
+++ b/drivers/mtd/maps/mtx-1_flash.c
@@ -0,0 +1,96 @@
+/*
+ * Flash memory access on 4G Systems MTX-1 boards
+ *
+ * $Id: mtx-1_flash.c,v 1.1 2005/09/18 10:46:41 joern Exp $
+ *
+ * (C) 2005 Bruno Randolf <bruno.randolf@4g-systems.biz>
+ * (C) 2005 Jörn Engel <joern@wohnheim.fh-wedel.de>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/io.h>
+
+static struct map_info mtx1_map = {
+	.name = "MTX-1 flash",
+	.bankwidth = 4,
+	.size = 0x2000000,
+	.phys = 0x1E000000,
+};
+
+static struct mtd_partition mtx1_partitions[] = {
+        {
+                .name = "filesystem",
+                .size = 0x01C00000,
+                .offset = 0,
+        },{
+                .name = "yamon",
+                .size = 0x00100000,
+                .offset = MTDPART_OFS_APPEND,
+                .mask_flags = MTD_WRITEABLE,
+        },{
+                .name = "kernel",
+                .size = 0x002c0000,
+                .offset = MTDPART_OFS_APPEND,
+        },{
+                .name = "yamon env",
+                .size = 0x00040000,
+                .offset = MTDPART_OFS_APPEND,
+        }
+};
+
+static struct mtd_info *mtx1_mtd;
+
+int __init mtx1_mtd_init(void)
+{
+	int ret = -ENXIO;
+
+	simple_map_init(&mtx1_map);
+
+	mtx1_map.virt = ioremap(mtx1_map.phys, mtx1_map.size);
+	if (!mtx1_map.virt)
+		return -EIO;
+
+	mtx1_mtd = do_map_probe("cfi_probe", &mtx1_map);
+	if (!mtx1_mtd)
+		goto err;
+
+	mtx1_mtd->owner = THIS_MODULE;
+
+	ret = add_mtd_partitions(mtx1_mtd, mtx1_partitions, 
+			ARRAY_SIZE(mtx1_partitions));
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+       iounmap(mtx1_map.virt);
+       return ret;
+}
+
+static void __exit mtx1_mtd_cleanup(void)
+{
+	if (mtx1_mtd) {
+		del_mtd_partitions(mtx1_mtd);
+		map_destroy(mtx1_mtd);
+	}
+	if (mtx1_map.virt)
+		iounmap(mtx1_map.virt);
+}
+
+module_init(mtx1_mtd_init);
+module_exit(mtx1_mtd_cleanup);
+
+MODULE_AUTHOR("Bruno Randolf <bruno.randolf@4g-systems.biz>");
+MODULE_DESCRIPTION("MTX-1 flash map");
+MODULE_LICENSE("GPL");