From 414f552ad872e19a7471644317a60f3cbba25ced Mon Sep 17 00:00:00 2001
From: Ladislav Michl <ladis@linux-mips.org>
Date: Fri, 11 Dec 2009 16:16:33 -0800
Subject: omap1: Use gen_nand

Since omapnand driver never find its way into mainline, switch to gen_nand instead.
Following patch is compile tested only, but it is based on code I wrote for
NetStar board and runtime tested it there.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Cc: Imre Deak <imre.deak@nokia.com>
Cc: Brian Swetland <swetland@google.com>
Cc: Kevin Hilman <kjh@hilman.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 arch/arm/mach-omap1/board-perseus2.c | 48 +++++++++++++++++++++++++++---------
 1 file changed, 36 insertions(+), 12 deletions(-)

(limited to 'arch/arm/mach-omap1/board-perseus2.c')

diff --git a/arch/arm/mach-omap1/board-perseus2.c b/arch/arm/mach-omap1/board-perseus2.c
index b9ea31289b50..1387a4f15da9 100644
--- a/arch/arm/mach-omap1/board-perseus2.c
+++ b/arch/arm/mach-omap1/board-perseus2.c
@@ -31,7 +31,6 @@
 #include <mach/gpio.h>
 #include <plat/mux.h>
 #include <plat/fpga.h>
-#include <plat/nand.h>
 #include <plat/keypad.h>
 #include <plat/common.h>
 #include <plat/board.h>
@@ -141,8 +140,40 @@ static struct platform_device nor_device = {
 	.resource	= &nor_resource,
 };
 
-static struct omap_nand_platform_data nand_data = {
-	.options	= NAND_SAMSUNG_LP_OPTIONS,
+static void nand_cmd_ctl(struct mtd_info *mtd, int cmd,	unsigned int ctrl)
+{
+	struct nand_chip *this = mtd->priv;
+	unsigned long mask;
+
+	if (cmd == NAND_CMD_NONE)
+		return;
+
+	mask = (ctrl & NAND_CLE) ? 0x02 : 0;
+	if (ctrl & NAND_ALE)
+		mask |= 0x04;
+	writeb(cmd, (unsigned long)this->IO_ADDR_W | mask);
+}
+
+#define P2_NAND_RB_GPIO_PIN	62
+
+static int nand_dev_ready(struct mtd_info *mtd)
+{
+	return gpio_get_value(P2_NAND_RB_GPIO_PIN);
+}
+
+static const char *part_probes[] = { "cmdlinepart", NULL };
+
+static struct platform_nand_data nand_data = {
+	.chip	= {
+		.nr_chips		= 1,
+		.chip_offset		= 0,
+		.options		= NAND_SAMSUNG_LP_OPTIONS,
+		.part_probe_types	= part_probes,
+	},
+	.ctrl	= {
+		.cmd_ctrl	= nand_cmd_ctl,
+		.dev_ready	= nand_dev_ready,
+	},
 };
 
 static struct resource nand_resource = {
@@ -152,7 +183,7 @@ static struct resource nand_resource = {
 };
 
 static struct platform_device nand_device = {
-	.name		= "omapnand",
+	.name		= "gen_nand",
 	.id		= 0,
 	.dev		= {
 		.platform_data	= &nand_data,
@@ -211,13 +242,6 @@ static struct platform_device *devices[] __initdata = {
 	&lcd_device,
 };
 
-#define P2_NAND_RB_GPIO_PIN	62
-
-static int nand_dev_ready(struct omap_nand_platform_data *data)
-{
-	return gpio_get_value(P2_NAND_RB_GPIO_PIN);
-}
-
 static struct omap_lcd_config perseus2_lcd_config __initdata = {
 	.ctrl_name	= "internal",
 };
@@ -230,7 +254,7 @@ static void __init omap_perseus2_init(void)
 {
 	if (gpio_request(P2_NAND_RB_GPIO_PIN, "NAND ready") < 0)
 		BUG();
-	nand_data.dev_ready = nand_dev_ready;
+	gpio_direction_input(P2_NAND_RB_GPIO_PIN);
 
 	omap_cfg_reg(L3_1610_FLASH_CS2B_OE);
 	omap_cfg_reg(M8_1610_FLASH_CS2B_WE);
-- 
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