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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-20 14:50:31 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-20 14:50:31 -0700 |
commit | be967b7e2f7747a5ebf2a07ee627d9338491e784 (patch) | |
tree | f42b82601209a52b8ee478e36d8b21543ab03060 /drivers/mtd/nand/h1910.c | |
parent | eef11427edcb821b63920219f89379fab84198b9 (diff) | |
parent | 7bc3312bef4d6f220812500c0de7868fb7625a41 (diff) | |
download | op-kernel-dev-be967b7e2f7747a5ebf2a07ee627d9338491e784.zip op-kernel-dev-be967b7e2f7747a5ebf2a07ee627d9338491e784.tar.gz |
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (199 commits)
[MTD] NAND: Fix breakage all over the place
[PATCH] NAND: fix remaining OOB length calculation
[MTD] NAND Fixup NDFC merge brokeness
[MTD NAND] S3C2410 driver cleanup
[MTD NAND] s3c24x0 board: Fix clock handling, ensure proper initialisation.
[JFFS2] Check CRC32 on dirent and data nodes each time they're read
[JFFS2] When retiring nextblock, allocate a node_ref for the wasted space
[JFFS2] Mark XATTR support as experimental, for now
[JFFS2] Don't trust node headers before the CRC is checked.
[MTD] Restore MTD_ROM and MTD_RAM types
[MTD] assume mtd->writesize is 1 for NOR flashes
[MTD NAND] Fix s3c2410 NAND driver so it at least _looks_ like it compiles
[MTD] Prepare physmap for 64-bit-resources
[JFFS2] Fix more breakage caused by janitorial meddling.
[JFFS2] Remove stray __exit from jffs2_compressors_exit()
[MTD] Allow alternate JFFS2 mount variant for root filesystem.
[MTD] Disconnect struct mtd_info from ABI
[MTD] replace MTD_RAM with MTD_GENERIC_TYPE
[MTD] replace MTD_ROM with MTD_GENERIC_TYPE
[MTD] remove a forgotten MTD_XIP
...
Diffstat (limited to 'drivers/mtd/nand/h1910.c')
-rw-r--r-- | drivers/mtd/nand/h1910.c | 98 |
1 files changed, 39 insertions, 59 deletions
diff --git a/drivers/mtd/nand/h1910.c b/drivers/mtd/nand/h1910.c index f68f7a9..2d585d2 100644 --- a/drivers/mtd/nand/h1910.c +++ b/drivers/mtd/nand/h1910.c @@ -4,7 +4,7 @@ * 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 $ @@ -26,7 +26,7 @@ #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> @@ -45,47 +45,29 @@ static struct mtd_info *h1910_nand_mtd = NULL; * 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) +static void h1910_hwcontrol(struct mtd_info *mtd, int cmd, + unsigned int ctrl) { - 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; - } + struct nand_chip *chip = mtd->priv; + + if (cmd != NAND_CMD_NONE) + writeb(cmd, chip->IO_ADDR_W | ((ctrl & 0x6) << 1)); } /* @@ -101,7 +83,7 @@ static int h1910_device_ready(struct mtd_info *mtd) /* * Main initialization routine */ -static int __init h1910_init (void) +static int __init h1910_init(void) { struct nand_chip *this; const char *part_type = 0; @@ -119,24 +101,23 @@ static int __init h1910_init (void) } /* 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((char *) h1910_nand_mtd, 0, sizeof(struct mtd_info)); - memset((char *) this, 0, sizeof(struct nand_chip)); + memset(h1910_nand_mtd, 0, sizeof(struct mtd_info)); + memset(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 @@ -146,31 +127,28 @@ static int __init h1910_init (void) /* insert callbacks */ this->IO_ADDR_R = nandaddr; this->IO_ADDR_W = nandaddr; - this->hwcontrol = h1910_hwcontrol; + this->cmd_ctrl = 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->eccmode = NAND_ECC_SOFT; + this->ecc.mode = 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"; @@ -183,24 +161,26 @@ static int __init h1910_init (void) /* 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"); |