diff options
Diffstat (limited to 'drivers/mtd/nand/spia.c')
| -rw-r--r-- | drivers/mtd/nand/spia.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/drivers/mtd/nand/spia.c b/drivers/mtd/nand/spia.c deleted file mode 100644 index b777c412b75..00000000000 --- a/drivers/mtd/nand/spia.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * drivers/mtd/nand/spia.c - * - * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) - * - * - * 10-29-2001 TG change to support hardwarespecific access - * to controllines (due to change in nand.c) - * page_cache added - * - * $Id: spia.c,v 1.24 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 - * SPIA board which utilizes the Toshiba TC58V64AFT part. This is - * a 64Mibit (8MiB x 8 bits) NAND flash device. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/nand.h> -#include <linux/mtd/partitions.h> -#include <asm/io.h> - -/* - * MTD structure for SPIA board - */ -static struct mtd_info *spia_mtd = NULL; - -/* - * Values specific to the SPIA board (used with EP7212 processor) - */ -#define SPIA_IO_BASE 0xd0000000 /* Start of EP7212 IO address space */ -#define SPIA_FIO_BASE 0xf0000000 /* Address where flash is mapped */ -#define SPIA_PEDR 0x0080 /* - * IO offset to Port E data register - * where the CLE, ALE and NCE pins - * are wired to. - */ -#define SPIA_PEDDR 0x00c0 /* - * IO offset to Port E data direction - * register so we can control the IO - * lines. - */ - -/* - * Module stuff - */ - -static int spia_io_base = SPIA_IO_BASE; -static int spia_fio_base = SPIA_FIO_BASE; -static int spia_pedr = SPIA_PEDR; -static int spia_peddr = SPIA_PEDDR; - -module_param(spia_io_base, int, 0); -module_param(spia_fio_base, int, 0); -module_param(spia_pedr, int, 0); -module_param(spia_peddr, int, 0); - -/* - * Define partitions for flash device - */ -const static struct mtd_partition partition_info[] = { - { - .name = "SPIA flash partition 1", - .offset = 0, - .size = 2*1024*1024 - }, - { - .name = "SPIA flash partition 2", - .offset = 2*1024*1024, - .size = 6*1024*1024 - } -}; -#define NUM_PARTITIONS 2 - - -/* - * hardware specific access to control-lines -*/ -static void spia_hwcontrol(struct mtd_info *mtd, int cmd){ - - switch(cmd){ - - case NAND_CTL_SETCLE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |= 0x01; break; - case NAND_CTL_CLRCLE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x01; break; - - case NAND_CTL_SETALE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |= 0x02; break; - case NAND_CTL_CLRALE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x02; break; - - case NAND_CTL_SETNCE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) &= ~0x04; break; - case NAND_CTL_CLRNCE: (*(volatile unsigned char *) (spia_io_base + spia_pedr)) |= 0x04; break; - } -} - -/* - * Main initialization routine - */ -int __init spia_init (void) -{ - struct nand_chip *this; - - /* Allocate memory for MTD device structure and private data */ - spia_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip), - GFP_KERNEL); - if (!spia_mtd) { - printk ("Unable to allocate SPIA NAND MTD device structure.\n"); - return -ENOMEM; - } - - /* Get pointer to private data */ - this = (struct nand_chip *) (&spia_mtd[1]); - - /* Initialize structures */ - memset((char *) spia_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); - - /* Link the private data with the MTD structure */ - spia_mtd->priv = this; - - /* - * Set GPIO Port E control register so that the pins are configured - * to be outputs for controlling the NAND flash. - */ - (*(volatile unsigned char *) (spia_io_base + spia_peddr)) = 0x07; - - /* Set address of NAND IO lines */ - this->IO_ADDR_R = (void __iomem *) spia_fio_base; - this->IO_ADDR_W = (void __iomem *) spia_fio_base; - /* Set address of hardware control function */ - this->hwcontrol = spia_hwcontrol; - /* 15 us command delay time */ - this->chip_delay = 15; - - /* Scan to find existence of the device */ - if (nand_scan (spia_mtd, 1)) { - kfree (spia_mtd); - return -ENXIO; - } - - /* Register the partitions */ - add_mtd_partitions(spia_mtd, partition_info, NUM_PARTITIONS); - - /* Return happy */ - return 0; -} -module_init(spia_init); - -/* - * Clean up routine - */ -#ifdef MODULE -static void __exit spia_cleanup (void) -{ - /* Release resources, unregister device */ - nand_release (spia_mtd); - - /* Free the MTD device structure */ - kfree (spia_mtd); -} -module_exit(spia_cleanup); -#endif - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com"); -MODULE_DESCRIPTION("Board-specific glue layer for NAND flash on SPIA board"); |