diff options
Diffstat (limited to 'drivers/mtd/nand/edb7312.c')
| -rw-r--r-- | drivers/mtd/nand/edb7312.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/drivers/mtd/nand/edb7312.c b/drivers/mtd/nand/edb7312.c deleted file mode 100644 index 5549681ccdc..00000000000 --- a/drivers/mtd/nand/edb7312.c +++ /dev/null @@ -1,218 +0,0 @@ -/* - * drivers/mtd/nand/edb7312.c - * - * Copyright (C) 2002 Marius Gröger (mag@sysgo.de) - * - * Derived from drivers/mtd/nand/autcpu12.c - * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de) - * - * $Id: edb7312.c,v 1.11 2004/11/04 12:53:10 gleixner Exp $ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Overview: - * This is a device driver for the NAND flash device found on the - * CLEP7312 board which utilizes the Toshiba TC58V64AFT part. This is - * a 64Mibit (8MiB x 8 bits) NAND flash device. - */ - -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/nand.h> -#include <linux/mtd/partitions.h> -#include <asm/io.h> -#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */ -#include <asm/sizes.h> -#include <asm/hardware/clps7111.h> - -/* - * MTD structure for EDB7312 board - */ -static struct mtd_info *ep7312_mtd = NULL; - -/* - * Values specific to the EDB7312 board (used with EP7312 processor) - */ -#define EP7312_FIO_PBASE 0x10000000 /* Phys address of flash */ -#define EP7312_PXDR 0x0001 /* - * IO offset to Port B data register - * where the CLE, ALE and NCE pins - * are wired to. - */ -#define EP7312_PXDDR 0x0041 /* - * IO offset to Port B data direction - * register so we can control the IO - * lines. - */ - -/* - * Module stuff - */ - -static unsigned long ep7312_fio_pbase = EP7312_FIO_PBASE; -static void __iomem * ep7312_pxdr = (void __iomem *) EP7312_PXDR; -static void __iomem * ep7312_pxddr = (void __iomem *) EP7312_PXDDR; - -#ifdef CONFIG_MTD_PARTITIONS -/* - * Define static partitions for flash device - */ -static struct mtd_partition partition_info[] = { - { .name = "EP7312 Nand Flash", - .offset = 0, - .size = 8*1024*1024 } -}; -#define NUM_PARTITIONS 1 - -#endif - - -/* - * hardware specific access to control-lines - */ -static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd) -{ - switch(cmd) { - - case NAND_CTL_SETCLE: - clps_writeb(clps_readb(ep7312_pxdr) | 0x10, ep7312_pxdr); - break; - case NAND_CTL_CLRCLE: - clps_writeb(clps_readb(ep7312_pxdr) & ~0x10, ep7312_pxdr); - break; - - case NAND_CTL_SETALE: - clps_writeb(clps_readb(ep7312_pxdr) | 0x20, ep7312_pxdr); - break; - case NAND_CTL_CLRALE: - clps_writeb(clps_readb(ep7312_pxdr) & ~0x20, ep7312_pxdr); - break; - - case NAND_CTL_SETNCE: - clps_writeb((clps_readb(ep7312_pxdr) | 0x80) & ~0x40, ep7312_pxdr); - break; - case NAND_CTL_CLRNCE: - clps_writeb((clps_readb(ep7312_pxdr) | 0x80) | 0x40, ep7312_pxdr); - break; - } -} - -/* - * read device ready pin - */ -static int ep7312_device_ready(struct mtd_info *mtd) -{ - return 1; -} -#ifdef CONFIG_MTD_PARTITIONS -const char *part_probes[] = { "cmdlinepart", NULL }; -#endif - -/* - * Main initialization routine - */ -static int __init ep7312_init (void) -{ - struct nand_chip *this; - const char *part_type = 0; - int mtd_parts_nb = 0; - struct mtd_partition *mtd_parts = 0; - void __iomem * ep7312_fio_base; - - /* Allocate memory for MTD device structure and private data */ - ep7312_mtd = kmalloc(sizeof(struct mtd_info) + - sizeof(struct nand_chip), - GFP_KERNEL); - if (!ep7312_mtd) { - printk("Unable to allocate EDB7312 NAND MTD device structure.\n"); - return -ENOMEM; - } - - /* map physical adress */ - ep7312_fio_base = ioremap(ep7312_fio_pbase, SZ_1K); - if(!ep7312_fio_base) { - printk("ioremap EDB7312 NAND flash failed\n"); - kfree(ep7312_mtd); - return -EIO; - } - - /* Get pointer to private data */ - this = (struct nand_chip *) (&ep7312_mtd[1]); - - /* Initialize structures */ - memset((char *) ep7312_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); - - /* Link the private data with the MTD structure */ - ep7312_mtd->priv = this; - - /* - * Set GPIO Port B control register so that the pins are configured - * to be outputs for controlling the NAND flash. - */ - clps_writeb(0xf0, ep7312_pxddr); - - /* insert callbacks */ - this->IO_ADDR_R = ep7312_fio_base; - this->IO_ADDR_W = ep7312_fio_base; - this->hwcontrol = ep7312_hwcontrol; - this->dev_ready = ep7312_device_ready; - /* 15 us command delay time */ - this->chip_delay = 15; - - /* Scan to find existence of the device */ - if (nand_scan (ep7312_mtd, 1)) { - iounmap((void *)ep7312_fio_base); - kfree (ep7312_mtd); - return -ENXIO; - } - -#ifdef CONFIG_MTD_PARTITIONS - ep7312_mtd->name = "edb7312-nand"; - mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes, - &mtd_parts, 0); - if (mtd_parts_nb > 0) - part_type = "command line"; - else - mtd_parts_nb = 0; -#endif - if (mtd_parts_nb == 0) { - mtd_parts = partition_info; - mtd_parts_nb = NUM_PARTITIONS; - part_type = "static"; - } - - /* Register the partitions */ - printk(KERN_NOTICE "Using %s partition definition\n", part_type); - add_mtd_partitions(ep7312_mtd, mtd_parts, mtd_parts_nb); - - /* Return happy */ - return 0; -} -module_init(ep7312_init); - -/* - * Clean up routine - */ -static void __exit ep7312_cleanup (void) -{ - struct nand_chip *this = (struct nand_chip *) &ep7312_mtd[1]; - - /* Release resources, unregister device */ - nand_release (ap7312_mtd); - - /* Free internal data buffer */ - kfree (this->data_buf); - - /* Free the MTD device structure */ - kfree (ep7312_mtd); -} -module_exit(ep7312_cleanup); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Marius Groeger <mag@sysgo.de>"); -MODULE_DESCRIPTION("MTD map driver for Cogent EDB7312 board"); |