Remove the old rbmipsnand driver, we now use the plat_nand driver
SVN-Revision: 9188v19.07.3_mercusys_ac12_duma
Florian Fainelli
17 years ago
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");
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@ -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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