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Commit 3c803a9a authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
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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: default avatarMagnus Damm <damm@igel.co.jp>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent b8808786

arch/sh/boards/renesas/migor/setup.c

+73 −0
Original line number Diff line number Diff line
@@ -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 = {