parent
e54eec19b7
commit
0f43633263
@ -1,219 +0,0 @@ |
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#include <linux/io.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/mtd/nand.h> |
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#include <linux/mtd/mtd.h> |
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#include <linux/mtd/partitions.h> |
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#include <linux/delay.h> |
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#include <asm/io.h> |
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#include <asm/irq.h> |
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#include <asm/bootinfo.h> |
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#define IDT434_REG_BASE ((volatile void *) KSEG1ADDR(0x18000000)) |
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#define GPIOF 0x050000 |
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#define GPIOC 0x050004 |
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#define GPIOD 0x050008 |
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#define GPIO_RDY (1 << 0x08) |
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#define GPIO_WPX (1 << 0x09) |
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#define GPIO_ALE (1 << 0x0a) |
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#define GPIO_CLE (1 << 0x0b) |
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#define DEV2BASE 0x010020 |
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#define LO_WPX (1 << 0) |
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#define LO_ALE (1 << 1) |
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#define LO_CLE (1 << 2) |
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#define LO_CEX (1 << 3) |
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#define LO_FOFF (1 << 5) |
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#define LO_SPICS (1 << 6) |
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#define LO_ULED (1 << 7) |
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#define MEM32(x) *((volatile unsigned *) (x)) |
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extern char *board_type; |
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struct rb500_nand_info { |
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struct nand_chip chip; |
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struct mtd_info mtd; |
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void __iomem *io_base; |
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#ifdef CONFIG_MTD_PARTITIONS |
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int nr_parts; |
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struct mtd_partition *parts; |
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#endif |
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int init_ok; |
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int flags1; |
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int flags2; |
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}; |
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static struct mtd_partition partition_info[] = { |
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{ |
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name:"RouterBoard NAND Boot", |
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offset:0, |
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size:4 * 1024 * 1024}, |
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{ |
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name:"rootfs", |
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offset:MTDPART_OFS_NXTBLK, |
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size:MTDPART_SIZ_FULL} |
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}; |
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extern void changeLatchU5(unsigned char orMask, unsigned char nandMask); |
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static int rb500_dev_ready(struct mtd_info *mtd) |
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{ |
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return MEM32(IDT434_REG_BASE + GPIOD) & GPIO_RDY; |
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} |
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/*
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* hardware specific access to control-lines |
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* |
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* ctrl: |
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* NAND_CLE: bit 2 -> bit 3
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* NAND_ALE: bit 3 -> bit 2 |
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*/ |
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static void rbmips_hwcontrol500(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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unsigned char orbits, nandbits; |
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if (ctrl & NAND_CTRL_CHANGE) { |
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orbits = (ctrl & NAND_CLE) << 1; |
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orbits |= (ctrl & NAND_ALE) >> 1; |
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nandbits = (~ctrl & NAND_CLE) << 1; |
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nandbits |= (~ctrl & NAND_ALE) >> 1; |
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changeLatchU5(orbits, nandbits); |
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} |
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if (cmd != NAND_CMD_NONE) |
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writeb(cmd, chip->IO_ADDR_W); |
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} |
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unsigned get_rbnand_block_size(struct rb500_nand_info *data) |
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{ |
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if (data->init_ok) |
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return data->mtd.writesize; |
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else |
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return 0; |
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} |
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EXPORT_SYMBOL(get_rbnand_block_size); |
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static int rbmips_probe(struct platform_device *pdev) |
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{ |
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struct rb500_nand_info *data; |
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int res = 0; |
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int *b; |
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/* Allocate memory for the structure */ |
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data = kzalloc(sizeof(*data), GFP_KERNEL); |
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if (!data) { |
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dev_err(&pdev->dev, "Failed to allocate device structure\n"); |
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return -ENOMEM; |
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} |
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data->io_base = ioremap(pdev->resource[0].start, pdev->resource[0].end - pdev->resource[0].start + 1); |
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if (data->io_base == NULL) { |
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dev_err(&pdev->dev, "ioremap failed\n"); |
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kfree(data); |
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return -EIO; |
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} |
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if (!strcmp(board_type, "500r5")) { |
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data->flags1 = LO_FOFF | LO_CEX; |
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data->flags2 = LO_ULED | LO_ALE | LO_CLE | LO_WPX; |
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} |
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else { |
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data->flags1 = LO_WPX | LO_FOFF | LO_CEX; |
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data->flags2 = LO_ULED | LO_ALE | LO_CLE; |
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} |
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changeLatchU5(data->flags1, data->flags2); |
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data->chip.cmd_ctrl = rbmips_hwcontrol500; |
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data->chip.dev_ready = rb500_dev_ready; |
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data->chip.IO_ADDR_W = (unsigned char *)KSEG1ADDR(MEM32(IDT434_REG_BASE + DEV2BASE)); |
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data->chip.IO_ADDR_R = data->chip.IO_ADDR_W; |
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data->chip.ecc.mode = NAND_ECC_SOFT; |
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data->chip.chip_delay = 25; |
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data->chip.options |= NAND_NO_AUTOINCR; |
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data->chip.priv = &data; |
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data->mtd.priv = &data->chip; |
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data->mtd.owner = THIS_MODULE; |
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b = (int *) KSEG1ADDR(0x18010020); |
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printk("dev2base 0x%08x mask 0x%08x c 0x%08x tc 0x%08x\n", b[0], |
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b[1], b[2], b[3]); |
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platform_set_drvdata(pdev, data); |
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/* Why do we need to scan 4 times ? */ |
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if (nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1) && nand_scan(&data->mtd, 1)) { |
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printk(KERN_INFO "RB500 nand device not found\n"); |
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res = -ENXIO; |
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goto out; |
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} |
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printk(KERN_INFO "RB500 NAND\n"); |
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add_mtd_partitions(&data->mtd, partition_info, 2); |
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data->init_ok = 1; |
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res = add_mtd_device(&data->mtd); |
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if (!res) |
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return res; |
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nand_release(&data->mtd); |
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out: |
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platform_set_drvdata(pdev, NULL); |
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iounmap(data->io_base); |
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kfree(data); |
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return res; |
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} |
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static int __devexit rbmips_remove(struct platform_device *pdev) |
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{ |
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struct rb500_nand_info *data = platform_get_drvdata(pdev); |
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nand_release(&data->mtd); |
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iounmap(data->io_base); |
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kfree(data); |
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return 0; |
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} |
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static struct platform_driver rb500_nand_driver = { |
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.probe = rbmips_probe, |
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.remove = rbmips_remove, |
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.driver = { |
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.name = "rb500-nand", |
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.owner = THIS_MODULE, |
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}, |
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}; |
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static int __init rb500_nand_init(void) |
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{ |
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int err; |
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err = platform_driver_register(&rb500_nand_driver); |
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return err; |
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} |
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static void __exit rb500_nand_exit(void) |
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{ |
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platform_driver_unregister(&rb500_nand_driver); |
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} |
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module_init(rb500_nand_init); |
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module_exit(rb500_nand_exit); |
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MODULE_LICENSE("GPL"); |
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MODULE_AUTHOR("David Goodenough, Felix Fietkau, Florian Fainelli"); |
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MODULE_DESCRIPTION("RouterBOARD 500 NAND driver"); |
@ -1,29 +0,0 @@ |
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Index: linux-2.6.21.1/drivers/mtd/nand/Kconfig
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===================================================================
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--- linux-2.6.21.1.orig/drivers/mtd/nand/Kconfig 2007-04-27 23:49:26.000000000 +0200
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+++ linux-2.6.21.1/drivers/mtd/nand/Kconfig 2007-06-07 01:31:30.927069952 +0200
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@@ -75,6 +75,12 @@
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help
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Support for NAND flash on Technologic Systems TS-7250 platform.
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+config MTD_NAND_RB500
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+ tristate "NAND Flash device on RB500 board"
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+ depends on MTD_NAND
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+ help
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+ Support for NAND flash on RB500 platform.
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+
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config MTD_NAND_IDS
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tristate
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Index: linux-2.6.21.1/drivers/mtd/nand/Makefile
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===================================================================
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--- linux-2.6.21.1.orig/drivers/mtd/nand/Makefile 2007-04-27 23:49:26.000000000 +0200
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+++ linux-2.6.21.1/drivers/mtd/nand/Makefile 2007-06-07 01:31:30.927069952 +0200
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@@ -10,6 +10,7 @@
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obj-$(CONFIG_MTD_NAND_SPIA) += spia.o
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obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o
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obj-$(CONFIG_MTD_NAND_TOTO) += toto.o
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+obj-$(CONFIG_MTD_NAND_RB500) += rbmipsnand.o
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obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o
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obj-$(CONFIG_MTD_NAND_EDB7312) += edb7312.o
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obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o
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