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-h2.c | 49 +++++++++++++++++++++++++++++++++---------
 1 file changed, 39 insertions(+), 10 deletions(-)

(limited to 'arch/arm/mach-omap1/board-h2.c')

diff --git a/arch/arm/mach-omap1/board-h2.c b/arch/arm/mach-omap1/board-h2.c
index eeafe6ed15cb..fa7cecea19f9 100644
--- a/arch/arm/mach-omap1/board-h2.c
+++ b/arch/arm/mach-omap1/board-h2.c
@@ -41,7 +41,6 @@
 #include <plat/mux.h>
 #include <plat/dma.h>
 #include <plat/tc.h>
-#include <plat/nand.h>
 #include <plat/irda.h>
 #include <plat/usb.h>
 #include <plat/keypad.h>
@@ -180,11 +179,43 @@ static struct mtd_partition h2_nand_partitions[] = {
 	},
 };
 
-/* dip switches control NAND chip access:  8 bit, 16 bit, or neither */
-static struct omap_nand_platform_data h2_nand_data = {
-	.options	= NAND_SAMSUNG_LP_OPTIONS,
-	.parts		= h2_nand_partitions,
-	.nr_parts	= ARRAY_SIZE(h2_nand_partitions),
+static void h2_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 H2_NAND_RB_GPIO_PIN	62
+
+static int h2_nand_dev_ready(struct mtd_info *mtd)
+{
+	return gpio_get_value(H2_NAND_RB_GPIO_PIN);
+}
+
+static const char *h2_part_probes[] = { "cmdlinepart", NULL };
+
+struct platform_nand_data h2_nand_platdata = {
+	.chip	= {
+		.nr_chips		= 1,
+		.chip_offset		= 0,
+		.nr_partitions		= ARRAY_SIZE(h2_nand_partitions),
+		.partitions		= h2_nand_partitions,
+		.options		= NAND_SAMSUNG_LP_OPTIONS,
+		.part_probe_types	= h2_part_probes,
+	},
+	.ctrl	= {
+		.cmd_ctrl	= h2_nand_cmd_ctl,
+		.dev_ready	= h2_nand_dev_ready,
+
+	},
 };
 
 static struct resource h2_nand_resource = {
@@ -192,10 +223,10 @@ static struct resource h2_nand_resource = {
 };
 
 static struct platform_device h2_nand_device = {
-	.name		= "omapnand",
+	.name		= "gen_nand",
 	.id		= 0,
 	.dev		= {
-		.platform_data	= &h2_nand_data,
+		.platform_data	= &h2_nand_platdata,
 	},
 	.num_resources	= 1,
 	.resource	= &h2_nand_resource,
@@ -378,8 +409,6 @@ static struct omap_board_config_kernel h2_config[] __initdata = {
 	{ OMAP_TAG_LCD,		&h2_lcd_config },
 };
 
-#define H2_NAND_RB_GPIO_PIN	62
-
 static void __init h2_init(void)
 {
 	/* Here we assume the NOR boot config:  NOR on CS3 (possibly swapped
-- 
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