[MTD] [CHIPS] Remove MTD_OBSOLETE_CHIPS (jedec, amd_flash, sharp)

Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

drivers/mtd/chips/Kconfig

 # drivers/mtd/chips/Kconfig
-# $Id: Kconfig,v 1.18 2005/11/07 11:14:22 gleixner Exp $
 
 menu "RAM/ROM/Flash chip drivers"
 	depends on MTD!=n
@@ -231,45 +230,6 @@ config MTD_ABSENT
 	  the system regardless of media presence.  Device nodes created
 	  with this driver will return -ENODEV upon access.
 
-config MTD_OBSOLETE_CHIPS
-	bool "Older (theoretically obsoleted now) drivers for non-CFI chips"
-	help
-	  This option does not enable any code directly, but will allow you to
-	  select some other chip drivers which are now considered obsolete,
-	  because the generic CONFIG_JEDECPROBE code above should now detect
-	  the chips which are supported by these drivers, and allow the generic
-	  CFI-compatible drivers to drive the chips. Say 'N' here unless you have
-	  already tried the CONFIG_JEDECPROBE method and reported its failure
-	  to the MTD mailing list at <linux-mtd@lists.infradead.org>
-
-config MTD_AMDSTD
-	tristate "AMD compatible flash chip support (non-CFI)"
-	depends on MTD_OBSOLETE_CHIPS && BROKEN
-	help
-	  This option enables support for flash chips using AMD-compatible
-	  commands, including some which are not CFI-compatible and hence
-	  cannot be used with the CONFIG_MTD_CFI_AMDSTD option.
-
-	  It also works on AMD compatible chips that do conform to CFI.
-
-config MTD_SHARP
-	tristate "pre-CFI Sharp chip support"
-	depends on MTD_OBSOLETE_CHIPS
-	help
-	  This option enables support for flash chips using Sharp-compatible
-	  commands, including some which are not CFI-compatible and hence
-	  cannot be used with the CONFIG_MTD_CFI_INTELxxx options.
-
-config MTD_JEDEC
-	tristate "JEDEC device support"
-	depends on MTD_OBSOLETE_CHIPS && BROKEN
-	help
-	  Enable older JEDEC flash interface devices for self
-	  programming flash.  It is commonly used in older AMD chips.  It is
-	  only called JEDEC because the JEDEC association
-	  <http://www.jedec.org/> distributes the identification codes for the
-	  chips.
-
 config MTD_XIP
 	bool "XIP aware MTD support"
 	depends on !SMP && (MTD_CFI_INTELEXT || MTD_CFI_AMDSTD) && EXPERIMENTAL && ARCH_MTD_XIP

drivers/mtd/chips/Makefile

 #
 # linux/drivers/chips/Makefile
 #
-# $Id: Makefile.common,v 1.5 2005/11/07 11:14:22 gleixner Exp $
 
 obj-$(CONFIG_MTD)		+= chipreg.o
-obj-$(CONFIG_MTD_AMDSTD)	+= amd_flash.o
 obj-$(CONFIG_MTD_CFI)		+= cfi_probe.o
 obj-$(CONFIG_MTD_CFI_UTIL)	+= cfi_util.o
 obj-$(CONFIG_MTD_CFI_STAA)	+= cfi_cmdset_0020.o
 obj-$(CONFIG_MTD_CFI_AMDSTD)	+= cfi_cmdset_0002.o
 obj-$(CONFIG_MTD_CFI_INTELEXT)	+= cfi_cmdset_0001.o
 obj-$(CONFIG_MTD_GEN_PROBE)	+= gen_probe.o
-obj-$(CONFIG_MTD_JEDEC)		+= jedec.o
 obj-$(CONFIG_MTD_JEDECPROBE)	+= jedec_probe.o
 obj-$(CONFIG_MTD_RAM)		+= map_ram.o
 obj-$(CONFIG_MTD_ROM)		+= map_rom.o
-obj-$(CONFIG_MTD_SHARP)		+= sharp.o
 obj-$(CONFIG_MTD_ABSENT)	+= map_absent.o

drivers/mtd/chips/sharp.c

-/*
- * MTD chip driver for pre-CFI Sharp flash chips
- *
- * Copyright 2000,2001 David A. Schleef <ds@schleef.org>
- *           2000,2001 Lineo, Inc.
- *
- * $Id: sharp.c,v 1.17 2005/11/29 14:28:28 gleixner Exp $
- *
- * Devices supported:
- *   LH28F016SCT Symmetrical block flash memory, 2Mx8
- *   LH28F008SCT Symmetrical block flash memory, 1Mx8
- *
- * Documentation:
- *   http://www.sharpmeg.com/datasheets/memic/flashcmp/
- *   http://www.sharpmeg.com/datasheets/memic/flashcmp/01symf/16m/016sctl9.pdf
- *   016sctl9.pdf
- *
- * Limitations:
- *   This driver only supports 4x1 arrangement of chips.
- *   Not tested on anything but PowerPC.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/cfi.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-
-#define CMD_RESET		0xffffffff
-#define CMD_READ_ID		0x90909090
-#define CMD_READ_STATUS		0x70707070
-#define CMD_CLEAR_STATUS	0x50505050
-#define CMD_BLOCK_ERASE_1	0x20202020
-#define CMD_BLOCK_ERASE_2	0xd0d0d0d0
-#define CMD_BYTE_WRITE		0x40404040
-#define CMD_SUSPEND		0xb0b0b0b0
-#define CMD_RESUME		0xd0d0d0d0
-#define CMD_SET_BLOCK_LOCK_1	0x60606060
-#define CMD_SET_BLOCK_LOCK_2	0x01010101
-#define CMD_SET_MASTER_LOCK_1	0x60606060
-#define CMD_SET_MASTER_LOCK_2	0xf1f1f1f1
-#define CMD_CLEAR_BLOCK_LOCKS_1	0x60606060
-#define CMD_CLEAR_BLOCK_LOCKS_2	0xd0d0d0d0
-
-#define SR_READY		0x80808080 // 1 = ready
-#define SR_ERASE_SUSPEND	0x40404040 // 1 = block erase suspended
-#define SR_ERROR_ERASE		0x20202020 // 1 = error in block erase or clear lock bits
-#define SR_ERROR_WRITE		0x10101010 // 1 = error in byte write or set lock bit
-#define	SR_VPP			0x08080808 // 1 = Vpp is low
-#define SR_WRITE_SUSPEND	0x04040404 // 1 = byte write suspended
-#define SR_PROTECT		0x02020202 // 1 = lock bit set
-#define SR_RESERVED		0x01010101
-
-#define SR_ERRORS (SR_ERROR_ERASE|SR_ERROR_WRITE|SR_VPP|SR_PROTECT)
-
-/* Configuration options */
-
-#undef AUTOUNLOCK  /* automatically unlocks blocks before erasing */
-
-static struct mtd_info *sharp_probe(struct map_info *);
-
-static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd);
-
-static int sharp_read(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, u_char *buf);
-static int sharp_write(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, const u_char *buf);
-static int sharp_erase(struct mtd_info *mtd, struct erase_info *instr);
-static void sharp_sync(struct mtd_info *mtd);
-static int sharp_suspend(struct mtd_info *mtd);
-static void sharp_resume(struct mtd_info *mtd);
-static void sharp_destroy(struct mtd_info *mtd);
-
-static int sharp_write_oneword(struct map_info *map, struct flchip *chip,
-	unsigned long adr, __u32 datum);
-static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
-	unsigned long adr);
-#ifdef AUTOUNLOCK
-static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
-	unsigned long adr);
-#endif
-
-
-struct sharp_info{
-	struct flchip *chip;
-	int bogus;
-	int chipshift;
-	int numchips;
-	struct flchip chips[1];
-};
-
-static void sharp_destroy(struct mtd_info *mtd);
-
-static struct mtd_chip_driver sharp_chipdrv = {
-	.probe		= sharp_probe,
-	.destroy	= sharp_destroy,
-	.name		= "sharp",
-	.module		= THIS_MODULE
-};
-
-
-static struct mtd_info *sharp_probe(struct map_info *map)
-{
-	struct mtd_info *mtd = NULL;
-	struct sharp_info *sharp = NULL;
-	int width;
-
-	mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
-	if(!mtd)
-		return NULL;
-
-	sharp = kzalloc(sizeof(*sharp), GFP_KERNEL);
-	if(!sharp) {
-		kfree(mtd);
-		return NULL;
-	}
-
-	width = sharp_probe_map(map,mtd);
-	if(!width){
-		kfree(mtd);
-		kfree(sharp);
-		return NULL;
-	}
-
-	mtd->priv = map;
-	mtd->type = MTD_NORFLASH;
-	mtd->erase = sharp_erase;
-	mtd->read = sharp_read;
-	mtd->write = sharp_write;
-	mtd->sync = sharp_sync;
-	mtd->suspend = sharp_suspend;
-	mtd->resume = sharp_resume;
-	mtd->flags = MTD_CAP_NORFLASH;
-	mtd->writesize = 1;
-	mtd->name = map->name;
-
-	sharp->chipshift = 23;
-	sharp->numchips = 1;
-	sharp->chips[0].start = 0;
-	sharp->chips[0].state = FL_READY;
-	sharp->chips[0].mutex = &sharp->chips[0]._spinlock;
-	sharp->chips[0].word_write_time = 0;
-	init_waitqueue_head(&sharp->chips[0].wq);
-	spin_lock_init(&sharp->chips[0]._spinlock);
-
-	map->fldrv = &sharp_chipdrv;
-	map->fldrv_priv = sharp;
-
-	__module_get(THIS_MODULE);
-	return mtd;
-}
-
-static inline void sharp_send_cmd(struct map_info *map, unsigned long cmd, unsigned long adr)
-{
-	map_word map_cmd;
-	map_cmd.x[0] = cmd;
-	map_write(map, map_cmd, adr);
-}
-
-static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
-{
-	map_word tmp, read0, read4;
-	unsigned long base = 0;
-	int width = 4;
-
-	tmp = map_read(map, base+0);
-
-	sharp_send_cmd(map, CMD_READ_ID, base+0);
-
-	read0 = map_read(map, base+0);
-	read4 = map_read(map, base+4);
-	if(read0.x[0] == 0x89898989){
-		printk("Looks like sharp flash\n");
-		switch(read4.x[0]){
-		case 0xaaaaaaaa:
-		case 0xa0a0a0a0:
-			/* aa - LH28F016SCT-L95 2Mx8, 32 64k blocks*/
-			/* a0 - LH28F016SCT-Z4  2Mx8, 32 64k blocks*/
-			mtd->erasesize = 0x10000 * width;
-			mtd->size = 0x200000 * width;
-			return width;
-		case 0xa6a6a6a6:
-			/* a6 - LH28F008SCT-L12 1Mx8, 16 64k blocks*/
-			/* a6 - LH28F008SCR-L85 1Mx8, 16 64k blocks*/
-			mtd->erasesize = 0x10000 * width;
-			mtd->size = 0x100000 * width;
-			return width;
-#if 0
-		case 0x00000000: /* unknown */
-			/* XX - LH28F004SCT 512kx8, 8 64k blocks*/
-			mtd->erasesize = 0x10000 * width;
-			mtd->size = 0x80000 * width;
-			return width;
-#endif
-		default:
-			printk("Sort-of looks like sharp flash, 0x%08lx 0x%08lx\n",
-				read0.x[0], read4.x[0]);
-		}
-	}else if((map_read(map, base+0).x[0] == CMD_READ_ID)){
-		/* RAM, probably */
-		printk("Looks like RAM\n");
-		map_write(map, tmp, base+0);
-	}else{
-		printk("Doesn't look like sharp flash, 0x%08lx 0x%08lx\n",
-			read0.x[0], read4.x[0]);
-	}
-
-	return 0;
-}
-
-/* This function returns with the chip->mutex lock held. */
-static int sharp_wait(struct map_info *map, struct flchip *chip)
-{
-	int i;
-	map_word status;
-	unsigned long timeo = jiffies + HZ;
-	DECLARE_WAITQUEUE(wait, current);
-	int adr = 0;
-
-retry:
-	spin_lock_bh(chip->mutex);
-
-	switch(chip->state){
-	case FL_READY:
-		sharp_send_cmd(map, CMD_READ_STATUS, adr);
-		chip->state = FL_STATUS;
-	case FL_STATUS:
-		for(i=0;i<100;i++){
-			status = map_read(map, adr);
-			if((status.x[0] & SR_READY)==SR_READY)
-				break;
-			udelay(1);
-		}
-		break;
-	default:
-		printk("Waiting for chip\n");
-
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&chip->wq, &wait);
-
-		spin_unlock_bh(chip->mutex);
-
-		schedule();
-		remove_wait_queue(&chip->wq, &wait);
-
-		if(signal_pending(current))
-			return -EINTR;
-
-		timeo = jiffies + HZ;
-
-		goto retry;
-	}
-
-	sharp_send_cmd(map, CMD_RESET, adr);
-
-	chip->state = FL_READY;
-
-	return 0;
-}
-
-static void sharp_release(struct flchip *chip)
-{
-	wake_up(&chip->wq);
-	spin_unlock_bh(chip->mutex);
-}
-
-static int sharp_read(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, u_char *buf)
-{
-	struct map_info *map = mtd->priv;
-	struct sharp_info *sharp = map->fldrv_priv;
-	int chipnum;
-	int ret = 0;
-	int ofs = 0;
-
-	chipnum = (from >> sharp->chipshift);
-	ofs = from & ((1 << sharp->chipshift)-1);
-
-	*retlen = 0;
-
-	while(len){
-		unsigned long thislen;
-
-		if(chipnum>=sharp->numchips)
-			break;
-
-		thislen = len;
-		if(ofs+thislen >= (1<<sharp->chipshift))
-			thislen = (1<<sharp->chipshift) - ofs;
-
-		ret = sharp_wait(map,&sharp->chips[chipnum]);
-		if(ret<0)
-			break;
-
-		map_copy_from(map,buf,ofs,thislen);
-
-		sharp_release(&sharp->chips[chipnum]);
-
-		*retlen += thislen;
-		len -= thislen;
-		buf += thislen;
-
-		ofs = 0;
-		chipnum++;
-	}
-	return ret;
-}
-
-static int sharp_write(struct mtd_info *mtd, loff_t to, size_t len,
-	size_t *retlen, const u_char *buf)
-{
-	struct map_info *map = mtd->priv;
-	struct sharp_info *sharp = map->fldrv_priv;
-	int ret = 0;
-	int i,j;
-	int chipnum;
-	unsigned long ofs;
-	union { u32 l; unsigned char uc[4]; } tbuf;
-
-	*retlen = 0;
-
-	while(len){
-		tbuf.l = 0xffffffff;
-		chipnum = to >> sharp->chipshift;
-		ofs = to & ((1<<sharp->chipshift)-1);
-
-		j=0;
-		for(i=ofs&3;i<4 && len;i++){
-			tbuf.uc[i] = *buf;
-			buf++;
-			to++;
-			len--;
-			j++;
-		}
-		sharp_write_oneword(map, &sharp->chips[chipnum], ofs&~3, tbuf.l);
-		if(ret<0)
-			return ret;
-		(*retlen)+=j;
-	}
-
-	return 0;
-}
-
-static int sharp_write_oneword(struct map_info *map, struct flchip *chip,
-	unsigned long adr, __u32 datum)
-{
-	int ret;
-	int timeo;
-	int try;
-	int i;
-	map_word data, status;
-
-	status.x[0] = 0;
-	ret = sharp_wait(map,chip);
-
-	for(try=0;try<10;try++){
-		sharp_send_cmd(map, CMD_BYTE_WRITE, adr);
-		/* cpu_to_le32 -> hack to fix the writel be->le conversion */
-		data.x[0] = cpu_to_le32(datum);
-		map_write(map, data, adr);
-
-		chip->state = FL_WRITING;
-
-		timeo = jiffies + (HZ/2);
-
-		sharp_send_cmd(map, CMD_READ_STATUS, adr);
-		for(i=0;i<100;i++){
-			status = map_read(map, adr);
-			if((status.x[0] & SR_READY) == SR_READY)
-				break;
-		}
-		if(i==100){
-			printk("sharp: timed out writing\n");
-		}
-
-		if(!(status.x[0] & SR_ERRORS))
-			break;
-
-		printk("sharp: error writing byte at addr=%08lx status=%08lx\n", adr, status.x[0]);
-
-		sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
-	}
-	sharp_send_cmd(map, CMD_RESET, adr);
-	chip->state = FL_READY;
-
-	wake_up(&chip->wq);
-	spin_unlock_bh(chip->mutex);
-
-	return 0;
-}
-
-static int sharp_erase(struct mtd_info *mtd, struct erase_info *instr)
-{
-	struct map_info *map = mtd->priv;
-	struct sharp_info *sharp = map->fldrv_priv;
-	unsigned long adr,len;
-	int chipnum, ret=0;
-
-//printk("sharp_erase()\n");
-	if(instr->addr & (mtd->erasesize - 1))
-		return -EINVAL;
-	if(instr->len & (mtd->erasesize - 1))
-		return -EINVAL;
-	if(instr->len + instr->addr > mtd->size)
-		return -EINVAL;
-
-	chipnum = instr->addr >> sharp->chipshift;
-	adr = instr->addr & ((1<<sharp->chipshift)-1);
-	len = instr->len;
-
-	while(len){
-		ret = sharp_erase_oneblock(map, &sharp->chips[chipnum], adr);
-		if(ret)return ret;
-
-		adr += mtd->erasesize;
-		len -= mtd->erasesize;
-		if(adr >> sharp->chipshift){
-			adr = 0;
-			chipnum++;
-			if(chipnum>=sharp->numchips)
-				break;
-		}
-	}
-
-	instr->state = MTD_ERASE_DONE;
-	mtd_erase_callback(instr);
-
-	return 0;
-}
-
-static int sharp_do_wait_for_ready(struct map_info *map, struct flchip *chip,
-	unsigned long adr)
-{
-	int ret;
-	unsigned long timeo;
-	map_word status;
-	DECLARE_WAITQUEUE(wait, current);
-
-	sharp_send_cmd(map, CMD_READ_STATUS, adr);
-	status = map_read(map, adr);
-
-	timeo = jiffies + HZ;
-
-	while(time_before(jiffies, timeo)){
-		sharp_send_cmd(map, CMD_READ_STATUS, adr);
-		status = map_read(map, adr);
-		if((status.x[0] & SR_READY)==SR_READY){
-			ret = 0;
-			goto out;
-		}
-		set_current_state(TASK_INTERRUPTIBLE);
-		add_wait_queue(&chip->wq, &wait);
-
-		//spin_unlock_bh(chip->mutex);
-
-		schedule_timeout(1);
-		schedule();
-		remove_wait_queue(&chip->wq, &wait);
-
-		//spin_lock_bh(chip->mutex);
-
-		if (signal_pending(current)){
-			ret = -EINTR;
-			goto out;
-		}
-
-	}
-	ret = -ETIME;
-out:
-	return ret;
-}
-
-static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
-	unsigned long adr)
-{
-	int ret;
-	//int timeo;
-	map_word status;
-	//int i;
-
-//printk("sharp_erase_oneblock()\n");
-
-#ifdef AUTOUNLOCK
-	/* This seems like a good place to do an unlock */
-	sharp_unlock_oneblock(map,chip,adr);
-#endif
-
-	sharp_send_cmd(map, CMD_BLOCK_ERASE_1, adr);
-	sharp_send_cmd(map, CMD_BLOCK_ERASE_2, adr);
-
-	chip->state = FL_ERASING;
-
-	ret = sharp_do_wait_for_ready(map,chip,adr);
-	if(ret<0)return ret;
-
-	sharp_send_cmd(map, CMD_READ_STATUS, adr);
-	status = map_read(map, adr);
-
-	if(!(status.x[0] & SR_ERRORS)){
-		sharp_send_cmd(map, CMD_RESET, adr);
-		chip->state = FL_READY;
-		//spin_unlock_bh(chip->mutex);
-		return 0;
-	}
-
-	printk("sharp: error erasing block at addr=%08lx status=%08lx\n", adr, status.x[0]);
-	sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
-
-	//spin_unlock_bh(chip->mutex);
-
-	return -EIO;
-}
-
-#ifdef AUTOUNLOCK
-static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
-	unsigned long adr)
-{
-	int i;
-	map_word status;
-
-	sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_1, adr);
-	sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_2, adr);
-
-	udelay(100);
-
-	status = map_read(map, adr);
-	printk("status=%08lx\n", status.x[0]);
-
-	for(i=0;i<1000;i++){
-		//sharp_send_cmd(map, CMD_READ_STATUS, adr);
-		status = map_read(map, adr);
-		if((status.x[0] & SR_READY) == SR_READY)
-			break;
-		udelay(100);
-	}
-	if(i==1000){
-		printk("sharp: timed out unlocking block\n");
-	}
-
-	if(!(status.x[0] & SR_ERRORS)){
-		sharp_send_cmd(map, CMD_RESET, adr);
-		chip->state = FL_READY;
-		return;
-	}
-
-	printk("sharp: error unlocking block at addr=%08lx status=%08lx\n", adr, status.x[0]);
-	sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
-}
-#endif
-
-static void sharp_sync(struct mtd_info *mtd)
-{
-	//printk("sharp_sync()\n");
-}
-
-static int sharp_suspend(struct mtd_info *mtd)
-{
-	printk("sharp_suspend()\n");
-	return -EINVAL;
-}
-
-static void sharp_resume(struct mtd_info *mtd)
-{
-	printk("sharp_resume()\n");
-
-}
-
-static void sharp_destroy(struct mtd_info *mtd)
-{
-	printk("sharp_destroy()\n");
-
-}
-
-static int __init sharp_probe_init(void)
-{
-	printk("MTD Sharp chip driver <ds@lineo.com>\n");
-
-	register_mtd_chip_driver(&sharp_chipdrv);
-
-	return 0;
-}
-
-static void __exit sharp_probe_exit(void)
-{
-	unregister_mtd_chip_driver(&sharp_chipdrv);
-}
-
-module_init(sharp_probe_init);
-module_exit(sharp_probe_exit);
-
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("David Schleef <ds@schleef.org>");
-MODULE_DESCRIPTION("Old MTD chip driver for pre-CFI Sharp flash chips");