[MTD] [NAND] rename at91_nand -> atmel_nand: file names and Kconfig

The AT91 NAND driver needs just a few tiny modifications to work on
AVR32 as well. Rename it atmel_nand to reflect this.

Also move the ECC register definitions into drivers/mtd/nand since they
are only useful to the atmel_nand driver, and get rid of the useless
filename at the top of each file.

Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

4 files changed, 50 insertions, 15 deletions

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 7dea6c3a6603..cdd2952c1533 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -271,7 +271,7 @@ config MTD_NAND_CS553X
 
           If you say "m", the module will be called "cs553x_nand.ko".
 
-config MTD_NAND_AT91
+config MTD_NAND_ATMEL
         bool "Support for NAND Flash / SmartMedia on AT91"
         depends on ARCH_AT91
         help
@@ -279,14 +279,15 @@ config MTD_NAND_AT91
           on Atmel AT91 processors.
 choice
         prompt "ECC management for NAND Flash / SmartMedia on AT91"
-        depends on MTD_NAND_AT91
+        depends on MTD_NAND_ATMEL
 
-config MTD_NAND_AT91_ECC_HW
+config MTD_NAND_ATMEL_ECC_HW
         bool "Hardware ECC"
         depends on ARCH_AT91SAM9263 || ARCH_AT91SAM9260
         help
-          Uses hardware ECC provided by the at91sam9260/at91sam9263 chip
-          instead of software ECC.
+          Use hardware ECC instead of software ECC when the chip
+          supports it.
+
           The hardware ECC controller is capable of single bit error
           correction and 2-bit random detection per page.
 
@@ -296,16 +297,16 @@ config MTD_NAND_AT91_ECC_HW
 
           If unsure, say Y
 
-config MTD_NAND_AT91_ECC_SOFT
+config MTD_NAND_ATMEL_ECC_SOFT
         bool "Software ECC"
         help
-          Uses software ECC.
+          Use software ECC.
 
           NB : hardware and software ECC schemes are incompatible.
           If you switch from one to another, you'll have to erase your
           mtd partition.
 
-config MTD_NAND_AT91_ECC_NONE
+config MTD_NAND_ATMEL_ECC_NONE
         bool "No ECC (testing only, DANGEROUS)"
         depends on DEBUG_KERNEL
         help
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index d95a10c51866..d772581de573 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -23,7 +23,7 @@ obj-$(CONFIG_MTD_NAND_TS7250)		+= ts7250.o
 obj-$(CONFIG_MTD_NAND_NANDSIM)          += nandsim.o
 obj-$(CONFIG_MTD_NAND_CS553X)           += cs553x_nand.o
 obj-$(CONFIG_MTD_NAND_NDFC)             += ndfc.o
-obj-$(CONFIG_MTD_NAND_AT91)             += at91_nand.o
+obj-$(CONFIG_MTD_NAND_ATMEL)            += atmel_nand.o
 obj-$(CONFIG_MTD_NAND_CM_X270)          += cmx270_nand.o
 obj-$(CONFIG_MTD_NAND_BASLER_EXCITE)    += excite_nandflash.o
 obj-$(CONFIG_MTD_NAND_PXA3xx)           += pxa3xx_nand.o
diff --git a/drivers/mtd/nand/at91_nand.c b/drivers/mtd/nand/atmel_nand.c
index 2dcaeeae2068..51b703155db6 100644
--- a/drivers/mtd/nand/at91_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -1,6 +1,4 @@
 /*
- * drivers/mtd/nand/at91_nand.c
- *
  *  Copyright (C) 2003 Rick Bronson
  *
  *  Derived from drivers/mtd/nand/autcpu12.c
@@ -36,13 +34,13 @@
 
 #include <asm/arch/board.h>
 
-#ifdef CONFIG_MTD_NAND_AT91_ECC_HW
+#ifdef CONFIG_MTD_NAND_ATMEL_ECC_HW
 #define hard_ecc        1
 #else
 #define hard_ecc        0
 #endif
 
-#ifdef CONFIG_MTD_NAND_AT91_ECC_NONE
+#ifdef CONFIG_MTD_NAND_ATMEL_ECC_NONE
 #define no_ecc          1
 #else
 #define no_ecc          0
@@ -54,7 +52,7 @@
 #define ecc_writel(add, reg, value)                     \
         __raw_writel((value), add + AT91_ECC_##reg)
 
-#include <asm/arch/at91_ecc.h> /* AT91SAM9260/3 ECC registers */
+#include "atmel_nand_ecc.h"     /* Hardware ECC registers */
 
 /* oob layout for large page size
  * bad block info is on bytes 0 and 1
@@ -588,5 +586,5 @@ module_exit(at91_nand_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Rick Bronson");
-MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91RM9200 / AT91SAM9");
+MODULE_DESCRIPTION("NAND/SmartMedia driver for AT91 / AVR32");
 MODULE_ALIAS("platform:at91_nand");
diff --git a/drivers/mtd/nand/atmel_nand_ecc.h b/drivers/mtd/nand/atmel_nand_ecc.h
new file mode 100644
index 000000000000..170db869aacf
--- /dev/null
+++ b/drivers/mtd/nand/atmel_nand_ecc.h
@@ -0,0 +1,36 @@
+/*
+ * Error Corrected Code Controller (ECC) - System peripherals regsters.
+ * Based on AT91SAM9260 datasheet revision B.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef ATMEL_NAND_ECC_H
+#define ATMEL_NAND_ECC_H
+
+#define AT91_ECC_CR             0x00                    /* Control register */
+#define         AT91_ECC_RST            (1 << 0)                /* Reset parity */
+
+#define AT91_ECC_MR             0x04                    /* Mode register */
+#define         AT91_ECC_PAGESIZE       (3 << 0)                /* Page Size */
+#define                 AT91_ECC_PAGESIZE_528           (0)
+#define                 AT91_ECC_PAGESIZE_1056          (1)
+#define                 AT91_ECC_PAGESIZE_2112          (2)
+#define                 AT91_ECC_PAGESIZE_4224          (3)
+
+#define AT91_ECC_SR             0x08                    /* Status register */
+#define         AT91_ECC_RECERR         (1 << 0)                /* Recoverable Error */
+#define         AT91_ECC_ECCERR         (1 << 1)                /* ECC Single Bit Error */
+#define         AT91_ECC_MULERR         (1 << 2)                /* Multiple Errors */
+
+#define AT91_ECC_PR             0x0c                    /* Parity register */
+#define         AT91_ECC_BITADDR        (0xf << 0)              /* Bit Error Address */
+#define         AT91_ECC_WORDADDR       (0xfff << 4)            /* Word Error Address */
+
+#define AT91_ECC_NPR            0x10                    /* NParity register */
+#define         AT91_ECC_NPARITY        (0xffff << 0)           /* NParity */
+
+#endif