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>

1 files changed, 40 insertions, 16 deletions

diff --git a/arch/arm/mach-omap1/board-h3.c b/arch/arm/mach-omap1/board-h3.c
index e0aee66e43e..6a7f9c391cf 100644
--- a/arch/arm/mach-omap1/board-h3.c
+++ b/arch/arm/mach-omap1/board-h3.c
@@ -43,7 +43,6 @@
 #include <mach/irqs.h>
 #include <plat/mux.h>
 #include <plat/tc.h>
-#include <plat/nand.h>
 #include <plat/usb.h>
 #include <plat/keypad.h>
 #include <plat/dma.h>
@@ -182,11 +181,43 @@ static struct mtd_partition nand_partitions[] = {
 	},
 };
 
-/* dip switches control NAND chip access:  8 bit, 16 bit, or neither */
-static struct omap_nand_platform_data nand_data = {
-	.options	= NAND_SAMSUNG_LP_OPTIONS,
-	.parts		= nand_partitions,
-	.nr_parts	= ARRAY_SIZE(nand_partitions),
+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 H3_NAND_RB_GPIO_PIN	10
+
+static int nand_dev_ready(struct mtd_info *mtd)
+{
+	return gpio_get_value(H3_NAND_RB_GPIO_PIN);
+}
+
+static const char *part_probes[] = { "cmdlinepart", NULL };
+
+struct platform_nand_data nand_platdata = {
+	.chip	= {
+		.nr_chips		= 1,
+		.chip_offset		= 0,
+		.nr_partitions		= ARRAY_SIZE(nand_partitions),
+		.partitions		= nand_partitions,
+		.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 = {
@@ -194,10 +225,10 @@ static struct resource nand_resource = {
 };
 
 static struct platform_device nand_device = {
-	.name		= "omapnand",
+	.name		= "gen_nand",
 	.id		= 0,
 	.dev		= {
-		.platform_data	= &nand_data,
+		.platform_data	= &nand_platdata,
 	},
 	.num_resources	= 1,
 	.resource	= &nand_resource,
@@ -342,13 +373,6 @@ static struct i2c_board_info __initdata h3_i2c_board_info[] = {
 	},
 };
 
-#define H3_NAND_RB_GPIO_PIN	10
-
-static int nand_dev_ready(struct omap_nand_platform_data *data)
-{
-	return gpio_get_value(H3_NAND_RB_GPIO_PIN);
-}
-
 static void __init h3_init(void)
 {
 	/* Here we assume the NOR boot config:  NOR on CS3 (possibly swapped
@@ -366,7 +390,7 @@ static void __init h3_init(void)
 	nand_resource.end += SZ_4K - 1;
 	if (gpio_request(H3_NAND_RB_GPIO_PIN, "NAND ready") < 0)
 		BUG();
-	nand_data.dev_ready = nand_dev_ready;
+	gpio_direction_input(H3_NAND_RB_GPIO_PIN);
 
 	/* GPIO10 Func_MUX_CTRL reg bit 29:27, Configure V2 to mode1 as GPIO */
 	/* GPIO10 pullup/down register, Enable pullup on GPIO10 */