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authorMagnus Damm <magnus.damm@gmail.com>2008-03-21 18:44:04 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-04-18 09:50:05 -0700
commit3c803a9a676c30e87b49f9cfcfd29713bc438552 (patch)
tree759e87c32381b60e127e38e2ffb0f5a74f0d1fc9 /arch/sh
parentb8808786e85a71afb1a169b5f059666c666f08d8 (diff)
sh: MigoR NAND flash support using gen_flash
Add NAND flash support to the MigoR board by giving board specific data to the gen_nand platform driver. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/boards/renesas/migor/setup.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/sh/boards/renesas/migor/setup.c b/arch/sh/boards/renesas/migor/setup.c
index 44d9b5675ec9..bc7a4cec1277 100644
--- a/arch/sh/boards/renesas/migor/setup.c
+++ b/arch/sh/boards/renesas/migor/setup.c
@@ -12,6 +12,7 @@
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/mtd/physmap.h>
+#include <linux/mtd/nand.h>
#include <asm/machvec.h>
#include <asm/io.h>
#include <asm/sh_keysc.h>
@@ -122,10 +123,77 @@ static struct platform_device migor_nor_flash_device = {
},
};
+static struct mtd_partition migor_nand_flash_partitions[] = {
+ {
+ .name = "nanddata1",
+ .offset = 0x0,
+ .size = 512 * 1024 * 1024,
+ },
+ {
+ .name = "nanddata2",
+ .offset = MTDPART_OFS_APPEND,
+ .size = 512 * 1024 * 1024,
+ },
+};
+
+static void migor_nand_flash_cmd_ctl(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl)
+{
+ struct nand_chip *chip = mtd->priv;
+
+ if (cmd == NAND_CMD_NONE)
+ return;
+
+ if (ctrl & NAND_CLE)
+ writeb(cmd, chip->IO_ADDR_W + 0x00400000);
+ else if (ctrl & NAND_ALE)
+ writeb(cmd, chip->IO_ADDR_W + 0x00800000);
+ else
+ writeb(cmd, chip->IO_ADDR_W);
+}
+
+static int migor_nand_flash_ready(struct mtd_info *mtd)
+{
+ return ctrl_inb(PORT_PADR) & 0x02; /* PTA1 */
+}
+
+struct platform_nand_data migor_nand_flash_data = {
+ .chip = {
+ .nr_chips = 1,
+ .partitions = migor_nand_flash_partitions,
+ .nr_partitions = ARRAY_SIZE(migor_nand_flash_partitions),
+ .chip_delay = 20,
+ .part_probe_types = (const char *[]) { "cmdlinepart", NULL },
+ },
+ .ctrl = {
+ .dev_ready = migor_nand_flash_ready,
+ .cmd_ctrl = migor_nand_flash_cmd_ctl,
+ },
+};
+
+static struct resource migor_nand_flash_resources[] = {
+ [0] = {
+ .name = "NAND Flash",
+ .start = 0x18000000,
+ .end = 0x18ffffff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device migor_nand_flash_device = {
+ .name = "gen_nand",
+ .resource = migor_nand_flash_resources,
+ .num_resources = ARRAY_SIZE(migor_nand_flash_resources),
+ .dev = {
+ .platform_data = &migor_nand_flash_data,
+ }
+};
+
static struct platform_device *migor_devices[] __initdata = {
&smc91x_eth_device,
&sh_keysc_device,
&migor_nor_flash_device,
+ &migor_nand_flash_device,
};
static int __init migor_devices_setup(void)
@@ -146,6 +214,11 @@ static void __init migor_setup(char **cmdline_p)
ctrl_outw(ctrl_inw(PORT_HIZCRA) & ~0x4000, PORT_HIZCRA);
ctrl_outw(ctrl_inw(PORT_HIZCRC) & ~0xc000, PORT_HIZCRC);
ctrl_outl(ctrl_inl(MSTPCR2) & ~0x00004000, MSTPCR2);
+
+ /* NAND Flash */
+ ctrl_outw(ctrl_inw(PORT_PXCR) & 0x0fff, PORT_PXCR);
+ ctrl_outl((ctrl_inl(BSC_CS6ABCR) & ~0x00000600) | 0x00000200,
+ BSC_CS6ABCR);
}
static struct sh_machine_vector mv_migor __initmv = {