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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>
This commit is contained in:
Magnus Damm 2008-03-21 18:44:04 +09:00 committed by Paul Mundt
parent b8808786e8
commit 3c803a9a67
1 changed files with 73 additions and 0 deletions
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73
arch/sh/boards/renesas/migor/setup.c
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@ -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 = {