[adm5120] NAND driver cleanups, thanks to Alexandros C. Couloumbis for testing

* use generic NAND driver from now
* add experimental support for RouterBOARD 150 NAND device


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9118 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 102 insertions, 0 deletions

diff --git a/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_nand.h b/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_nand.h
new file mode 100644
index 000000000..8d86fc6e7
--- /dev/null
+++ b/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_nand.h
@@ -0,0 +1,102 @@
+/*
+ *  ADM5120 NAND interface definitions
+ *
+ *  This header file defines the hardware registers of the ADM5120 SoC
+ *  built-in NAND interface.
+ *
+ *  Copyright (C) 2007 OpenWrt.org
+ *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
+ *
+ *  NAND interface routines was based on a driver for Linux 2.6.19+ which
+ *  was derived from the driver for Linux 2.4.xx published by Mikrotik for
+ *  their RouterBoard 1xx and 5xx series boards.
+ *    Copyright (C) 2007 David Goodenough <david.goodenough@linkchoose.co.uk>
+ *    Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
+ *    The original Mikrotik code seems not to have a license.
+ *
+ *  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.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the
+ *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ *
+ */
+
+#ifndef _ADM5120_NAND_H_
+#define _ADM5120_NAND_H_
+
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include <adm5120_defs.h>
+#include <adm5120_switch.h>
+
+/* NAND control registers */
+#define NAND_REG_DATA		0x0 /* data register */
+#define NAND_REG_SET_CEn	0x1 /* CE# low */
+#define NAND_REG_CLR_CEn	0x2 /* CE# high */
+#define NAND_REG_CLR_CLE	0x3 /* CLE low */
+#define NAND_REG_SET_CLE	0x4 /* CLE high */
+#define NAND_REG_CLR_ALE	0x5 /* ALE low */
+#define NAND_REG_SET_ALE	0x6 /* ALE high */
+#define NAND_REG_SET_SPn	0x7 /* SP# low (use spare area) */
+#define NAND_REG_CLR_SPn	0x8 /* SP# high (do not use spare area) */
+#define NAND_REG_SET_WPn	0x9 /* WP# low */
+#define NAND_REG_CLR_WPn	0xA /* WP# high */
+#define NAND_REG_STATUS		0xB /* Status register */
+
+#define ADM5120_NAND_STATUS_READY	0x80
+
+#define NAND_READ_REG(r) \
+	readb((void __iomem *)KSEG1ADDR(ADM5120_NAND_BASE) + (r))
+#define NAND_WRITE_REG(r, v) \
+	writeb((v),(void __iomem *)KSEG1ADDR(ADM5120_NAND_BASE) + (r))
+
+/*-------------------------------------------------------------------------*/
+
+static inline void adm5120_nand_enable(void)
+{
+	SW_WRITE_REG(BW_CNTL1, BW_CNTL1_NAND_ENABLE);
+	SW_WRITE_REG(BOOT_DONE, 1);
+}
+
+static inline void adm5120_nand_set_wpn(unsigned int set)
+{
+	NAND_WRITE_REG((set) ? NAND_REG_SET_WPn : NAND_REG_CLR_WPn, 1);
+}
+
+static inline void adm5120_nand_set_spn(unsigned int set)
+{
+	NAND_WRITE_REG((set) ? NAND_REG_SET_SPn : NAND_REG_CLR_SPn, 1);
+}
+
+static inline void adm5120_nand_set_cle(unsigned int set)
+{
+	NAND_WRITE_REG((set) ? NAND_REG_SET_CLE : NAND_REG_CLR_CLE, 1);
+}
+
+static inline void adm5120_nand_set_ale(unsigned int set)
+{
+	NAND_WRITE_REG((set) ? NAND_REG_SET_ALE : NAND_REG_CLR_ALE, 1);
+}
+
+static inline void adm5120_nand_set_cen(unsigned int set)
+{
+	NAND_WRITE_REG((set) ? NAND_REG_SET_CEn : NAND_REG_CLR_CEn, 1);
+}
+
+static inline u8 adm5120_nand_get_status(void)
+{
+	return NAND_READ_REG(NAND_REG_STATUS);
+}
+
+#endif /* _ADM5120_NAND_H_ */