CRIS v32: Remove drivers/nandflash.h, now exists as machine specific file.

arch/cris/arch-v32/drivers/nandflash.c

-/*
- *  arch/cris/arch-v32/drivers/nandflash.c
- *
- *  Copyright (c) 2004
- *
- *  Derived from drivers/mtd/nand/spia.c
- * 	  Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
- *
- * $Id: nandflash.c,v 1.3 2005/06/01 10:57:12 starvik 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.
- *
- */
-
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/partitions.h>
-#include <asm/arch/memmap.h>
-#include <asm/arch/hwregs/reg_map.h>
-#include <asm/arch/hwregs/reg_rdwr.h>
-#include <asm/arch/hwregs/gio_defs.h>
-#include <asm/arch/hwregs/bif_core_defs.h>
-#include <asm/io.h>
-
-#define CE_BIT 4
-#define CLE_BIT 5
-#define ALE_BIT 6
-#define BY_BIT 7
-
-static struct mtd_info *crisv32_mtd = NULL;
-/*
- *	hardware specific access to control-lines
-*/
-static void crisv32_hwcontrol(struct mtd_info *mtd, int cmd)
-{
-	unsigned long flags;
-	reg_gio_rw_pa_dout dout = REG_RD(gio, regi_gio, rw_pa_dout);
-
-	local_irq_save(flags);
-	switch(cmd){
-		case NAND_CTL_SETCLE:
-		     dout.data |= (1<<CLE_BIT);
-		     break;
-		case NAND_CTL_CLRCLE:
-		     dout.data &= ~(1<<CLE_BIT);
-		     break;
-		case NAND_CTL_SETALE:
-		     dout.data |= (1<<ALE_BIT);
-		     break;
-		case NAND_CTL_CLRALE:
-		     dout.data &= ~(1<<ALE_BIT);
-		     break;
-		case NAND_CTL_SETNCE:
-		     dout.data |= (1<<CE_BIT);
-		     break;
-		case NAND_CTL_CLRNCE:
-		     dout.data &= ~(1<<CE_BIT);
-		     break;
-	}
-	REG_WR(gio, regi_gio, rw_pa_dout, dout);
-	local_irq_restore(flags);
-}
-
-/*
-*	read device ready pin
-*/
-int crisv32_device_ready(struct mtd_info *mtd)
-{
-	reg_gio_r_pa_din din = REG_RD(gio, regi_gio, r_pa_din);
-	return ((din.data & (1 << BY_BIT)) >> BY_BIT);
-}
-
-/*
- * Main initialization routine
- */
-struct mtd_info* __init crisv32_nand_flash_probe (void)
-{
-	void __iomem *read_cs;
-	void __iomem *write_cs;
-
-	reg_bif_core_rw_grp3_cfg bif_cfg = REG_RD(bif_core, regi_bif_core, rw_grp3_cfg);
-	reg_gio_rw_pa_oe pa_oe = REG_RD(gio, regi_gio, rw_pa_oe);
-	struct nand_chip *this;
-	int err = 0;
-
-	/* Allocate memory for MTD device structure and private data */
-	crisv32_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip),
-				GFP_KERNEL);
-	if (!crisv32_mtd) {
-		printk ("Unable to allocate CRISv32 NAND MTD device structure.\n");
-		err = -ENOMEM;
-		return NULL;
-	}
-
-	read_cs = ioremap(MEM_CSP0_START | MEM_NON_CACHEABLE, 8192);
-	write_cs = ioremap(MEM_CSP1_START | MEM_NON_CACHEABLE, 8192);
-
-	if (!read_cs || !write_cs) {
-		printk("CRISv32 NAND ioremap failed\n");
-		err = -EIO;
-		goto out_mtd;
-	}
-
-	/* Get pointer to private data */
-	this = (struct nand_chip *) (&crisv32_mtd[1]);
-
-	pa_oe.oe |= 1 << CE_BIT;
-	pa_oe.oe |= 1 << ALE_BIT;
-	pa_oe.oe |= 1 << CLE_BIT;
-	pa_oe.oe &= ~ (1 << BY_BIT);
-	REG_WR(gio, regi_gio, rw_pa_oe, pa_oe);
-
-	bif_cfg.gated_csp0 = regk_bif_core_rd;
-	bif_cfg.gated_csp1 = regk_bif_core_wr;
-	REG_WR(bif_core, regi_bif_core, rw_grp3_cfg, bif_cfg);
-
-	/* Initialize structures */
-	memset((char *) crisv32_mtd, 0, sizeof(struct mtd_info));
-	memset((char *) this, 0, sizeof(struct nand_chip));
-
-	/* Link the private data with the MTD structure */
-	crisv32_mtd->priv = this;
-
-	/* Set address of NAND IO lines */
-	this->IO_ADDR_R = read_cs;
-	this->IO_ADDR_W = write_cs;
-	this->hwcontrol = crisv32_hwcontrol;
-	this->dev_ready = crisv32_device_ready;
-	/* 20 us command delay time */
-	this->chip_delay = 20;
-	this->eccmode = NAND_ECC_SOFT;
-
-	/* Enable the following for a flash based bad block table */
-	this->options = NAND_USE_FLASH_BBT;
-
-	/* Scan to find existence of the device */
-	if (nand_scan (crisv32_mtd, 1)) {
-		err = -ENXIO;
-		goto out_ior;
-	}
-
-	return crisv32_mtd;
-
-out_ior:
-	iounmap((void *)read_cs);
-	iounmap((void *)write_cs);
-out_mtd:
-	kfree (crisv32_mtd);
-        return NULL;
-}
-