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>
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@ -12,6 +12,7 @@
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#include <linux/interrupt.h>
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#include <linux/input.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mtd/nand.h>
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#include <asm/machvec.h>
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#include <asm/io.h>
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#include <asm/sh_keysc.h>
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@ -122,10 +123,77 @@ static struct platform_device migor_nor_flash_device = {
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},
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};
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static struct mtd_partition migor_nand_flash_partitions[] = {
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{
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.name = "nanddata1",
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.offset = 0x0,
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.size = 512 * 1024 * 1024,
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},
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{
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.name = "nanddata2",
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.offset = MTDPART_OFS_APPEND,
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.size = 512 * 1024 * 1024,
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},
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};
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static void migor_nand_flash_cmd_ctl(struct mtd_info *mtd, int cmd,
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unsigned int ctrl)
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{
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struct nand_chip *chip = mtd->priv;
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if (cmd == NAND_CMD_NONE)
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return;
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if (ctrl & NAND_CLE)
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writeb(cmd, chip->IO_ADDR_W + 0x00400000);
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else if (ctrl & NAND_ALE)
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writeb(cmd, chip->IO_ADDR_W + 0x00800000);
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else
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writeb(cmd, chip->IO_ADDR_W);
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}
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static int migor_nand_flash_ready(struct mtd_info *mtd)
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{
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return ctrl_inb(PORT_PADR) & 0x02; /* PTA1 */
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}
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struct platform_nand_data migor_nand_flash_data = {
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.chip = {
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.nr_chips = 1,
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.partitions = migor_nand_flash_partitions,
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.nr_partitions = ARRAY_SIZE(migor_nand_flash_partitions),
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.chip_delay = 20,
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.part_probe_types = (const char *[]) { "cmdlinepart", NULL },
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},
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.ctrl = {
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.dev_ready = migor_nand_flash_ready,
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.cmd_ctrl = migor_nand_flash_cmd_ctl,
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},
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};
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static struct resource migor_nand_flash_resources[] = {
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[0] = {
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.name = "NAND Flash",
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.start = 0x18000000,
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.end = 0x18ffffff,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device migor_nand_flash_device = {
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.name = "gen_nand",
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.resource = migor_nand_flash_resources,
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.num_resources = ARRAY_SIZE(migor_nand_flash_resources),
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.dev = {
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.platform_data = &migor_nand_flash_data,
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}
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};
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static struct platform_device *migor_devices[] __initdata = {
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&smc91x_eth_device,
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&sh_keysc_device,
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&migor_nor_flash_device,
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&migor_nand_flash_device,
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};
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static int __init migor_devices_setup(void)
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@ -146,6 +214,11 @@ static void __init migor_setup(char **cmdline_p)
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ctrl_outw(ctrl_inw(PORT_HIZCRA) & ~0x4000, PORT_HIZCRA);
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ctrl_outw(ctrl_inw(PORT_HIZCRC) & ~0xc000, PORT_HIZCRC);
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ctrl_outl(ctrl_inl(MSTPCR2) & ~0x00004000, MSTPCR2);
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/* NAND Flash */
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ctrl_outw(ctrl_inw(PORT_PXCR) & 0x0fff, PORT_PXCR);
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ctrl_outl((ctrl_inl(BSC_CS6ABCR) & ~0x00000600) | 0x00000200,
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BSC_CS6ABCR);
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}
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static struct sh_machine_vector mv_migor __initmv = {
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