* Copyright (C) 2003 Joshua Wise (joshua@joshuawise.com)
*
* Derived from drivers/mtd/nand/edb7312.c
- * Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
+ * Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
* Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
*
* $Id: h1910.c,v 1.6 2005/11/07 11:14:30 gleixner Exp $
#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/arch/hardware.h> /* for CLPS7111_VIRT_BASE */
#include <asm/sizes.h>
#include <asm/arch/h1900-gpio.h>
#include <asm/arch/ipaq.h>
* Define static partitions for flash device
*/
static struct mtd_partition partition_info[] = {
- {name:"h1910 NAND Flash",
- offset:0,
- size:16 * 1024 * 1024}
+ { name: "h1910 NAND Flash",
+ offset: 0,
+ size: 16*1024*1024 }
};
-
#define NUM_PARTITIONS 1
#endif
+
/*
* hardware specific access to control-lines
- *
- * NAND_NCE: bit 0 - don't care
- * NAND_CLE: bit 1 - address bit 2
- * NAND_ALE: bit 2 - address bit 3
*/
-static void h1910_hwcontrol(struct mtd_info *mtd, int cmd,
- unsigned int ctrl)
+static void h1910_hwcontrol(struct mtd_info *mtd, int cmd)
{
- struct nand_chip *chip = mtd->priv;
-
- if (cmd != NAND_CMD_NONE)
- writeb(cmd, chip->IO_ADDR_W | ((ctrl & 0x6) << 1));
+ struct nand_chip* this = (struct nand_chip *) (mtd->priv);
+
+ switch(cmd) {
+
+ case NAND_CTL_SETCLE:
+ this->IO_ADDR_R |= (1 << 2);
+ this->IO_ADDR_W |= (1 << 2);
+ break;
+ case NAND_CTL_CLRCLE:
+ this->IO_ADDR_R &= ~(1 << 2);
+ this->IO_ADDR_W &= ~(1 << 2);
+ break;
+
+ case NAND_CTL_SETALE:
+ this->IO_ADDR_R |= (1 << 3);
+ this->IO_ADDR_W |= (1 << 3);
+ break;
+ case NAND_CTL_CLRALE:
+ this->IO_ADDR_R &= ~(1 << 3);
+ this->IO_ADDR_W &= ~(1 << 3);
+ break;
+
+ case NAND_CTL_SETNCE:
+ break;
+ case NAND_CTL_CLRNCE:
+ break;
+ }
}
/*
/*
* Main initialization routine
*/
-static int __init h1910_init(void)
+static int __init h1910_init (void)
{
struct nand_chip *this;
const char *part_type = 0;
}
/* Allocate memory for MTD device structure and private data */
- h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
+ h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) +
+ sizeof(struct nand_chip),
+ GFP_KERNEL);
if (!h1910_nand_mtd) {
printk("Unable to allocate h1910 NAND MTD device structure.\n");
- iounmap((void *)nandaddr);
+ iounmap ((void *) nandaddr);
return -ENOMEM;
}
/* Get pointer to private data */
- this = (struct nand_chip *)(&h1910_nand_mtd[1]);
+ this = (struct nand_chip *) (&h1910_nand_mtd[1]);
/* Initialize structures */
- memset(h1910_nand_mtd, 0, sizeof(struct mtd_info));
- memset(this, 0, sizeof(struct nand_chip));
+ memset((char *) h1910_nand_mtd, 0, sizeof(struct mtd_info));
+ memset((char *) this, 0, sizeof(struct nand_chip));
/* Link the private data with the MTD structure */
h1910_nand_mtd->priv = this;
- h1910_nand_mtd->owner = THIS_MODULE;
/*
* Enable VPEN
/* insert callbacks */
this->IO_ADDR_R = nandaddr;
this->IO_ADDR_W = nandaddr;
- this->cmd_ctrl = h1910_hwcontrol;
+ this->hwcontrol = h1910_hwcontrol;
this->dev_ready = NULL; /* unknown whether that was correct or not so we will just do it like this */
/* 15 us command delay time */
this->chip_delay = 50;
- this->ecc.mode = NAND_ECC_SOFT;
+ this->eccmode = NAND_ECC_SOFT;
this->options = NAND_NO_AUTOINCR;
/* Scan to find existence of the device */
- if (nand_scan(h1910_nand_mtd, 1)) {
+ if (nand_scan (h1910_nand_mtd, 1)) {
printk(KERN_NOTICE "No NAND device - returning -ENXIO\n");
- kfree(h1910_nand_mtd);
- iounmap((void *)nandaddr);
+ kfree (h1910_nand_mtd);
+ iounmap ((void *) nandaddr);
return -ENXIO;
}
+
#ifdef CONFIG_MTD_CMDLINE_PARTS
- mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts, "h1910-nand");
+ mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts,
+ "h1910-nand");
if (mtd_parts_nb > 0)
- part_type = "command line";
+ part_type = "command line";
else
- mtd_parts_nb = 0;
+ mtd_parts_nb = 0;
#endif
- if (mtd_parts_nb == 0) {
+ if (mtd_parts_nb == 0)
+ {
mtd_parts = partition_info;
mtd_parts_nb = NUM_PARTITIONS;
part_type = "static";
/* Return happy */
return 0;
}
-
module_init(h1910_init);
/*
* Clean up routine
*/
-static void __exit h1910_cleanup(void)
+static void __exit h1910_cleanup (void)
{
- struct nand_chip *this = (struct nand_chip *)&h1910_nand_mtd[1];
+ struct nand_chip *this = (struct nand_chip *) &h1910_nand_mtd[1];
/* Release resources, unregister device */
- nand_release(h1910_nand_mtd);
+ nand_release (h1910_nand_mtd);
/* Release io resource */
- iounmap((void *)this->IO_ADDR_W);
+ iounmap ((void *) this->IO_ADDR_W);
/* Free the MTD device structure */
- kfree(h1910_nand_mtd);
+ kfree (h1910_nand_mtd);
}
-
module_exit(h1910_cleanup);
MODULE_LICENSE("GPL");
git://git.onelab.eu / linux-2.6.git / blobdiff