Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6: (91 commits)
  [MTD] [NAND] Blackfin on-chip NAND Flash Controller driver
  [MTD] [NOR] fix ctrl-alt-del can't reboot for intel flash bug
  [MTD] [NAND] Fix compiler warning in Alauda driver
  [JFFS2] Remove stray debugging printk
  [JFFS2] Handle dirents on the flash with embedded zero bytes in names.
  [JFFS2] Check for creation of dirents with embedded zero bytes in name.
  [JFFS2] Don't count all 'very dirty' blocks except in debug mode
  [JFFS2] Check whether garbage-collection actually obsoleted its victim.
  [JFFS2] Relax threshold for triggering GC due to dirty blocks.
  [MTD] [OneNAND] Fix typo related with recent commit
  [JFFS2] Trigger garbage collection when very_dirty_list size becomes excessive
  [MTD] [NAND] Avoid deadlock in erase callback; release chip lock first.
  [MTD] [NAND] Resume method for CAFÉ NAND controller
  [MTD] [NAND] Fix PCI ident table for CAFÉ NAND controller.
  [MTD] [NAND] s3c2410: fix arch moves
  [MTD] [OneNAND] fix numerous races
  [MTD] map driver for NOR flash on the Intel Vermilion Range chipset
  [JFFS2] Fix unpoint length
  [MTD] fix CFI point method for discontiguous maps
  [MTD] MAPS: Merge Lubbock and Mainstone drivers into common PXA2xx driver
  ...

1 files changed, 0 insertions, 485 deletions

diff --git a/drivers/mtd/devices/at91_dataflash26.c b/drivers/mtd/devices/at91_dataflash26.c
deleted file mode 100644
index 64ce37f986f..00000000000
--- a/drivers/mtd/devices/at91_dataflash26.c
+++ /dev/null
@@ -1,485 +0,0 @@
-/*
- * Atmel DataFlash driver for Atmel AT91RM9200 (Thunder)
- * This is a largely modified version of at91_dataflash.c that
- * supports AT26xxx dataflash chips. The original driver supports
- * AT45xxx chips.
- *
- * Note: This driver was only tested with an AT26F004. It should be
- * easy to make it work with other AT26xxx dataflash devices, though.
- *
- * Copyright (C) 2007 Hans J. Koch <hjk@linutronix.de>
- * original Copyright (C) SAN People (Pty) Ltd
- *
- * 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/config.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/mtd/mtd.h>
-
-#include <asm/arch/at91_spi.h>
-
-#define DATAFLASH_MAX_DEVICES	4	/* max number of dataflash devices */
-
-#define MANUFACTURER_ID_ATMEL		0x1F
-
-/* command codes */
-
-#define AT26_OP_READ_STATUS		0x05
-#define AT26_OP_READ_DEV_ID		0x9F
-#define AT26_OP_ERASE_PAGE_4K		0x20
-#define AT26_OP_READ_ARRAY_FAST		0x0B
-#define AT26_OP_SEQUENTIAL_WRITE	0xAF
-#define AT26_OP_WRITE_ENABLE		0x06
-#define AT26_OP_WRITE_DISABLE		0x04
-#define AT26_OP_SECTOR_PROTECT		0x36
-#define AT26_OP_SECTOR_UNPROTECT	0x39
-
-/* status register bits */
-
-#define AT26_STATUS_BUSY		0x01
-#define AT26_STATUS_WRITE_ENABLE	0x02
-
-struct dataflash_local
-{
-	int spi;			/* SPI chip-select number */
-	unsigned int page_size;		/* number of bytes per page */
-};
-
-
-/* Detected DataFlash devices */
-static struct mtd_info* mtd_devices[DATAFLASH_MAX_DEVICES];
-static int nr_devices = 0;
-
-/* Allocate a single SPI transfer descriptor.  We're assuming that if multiple
-   SPI transfers occur at the same time, spi_access_bus() will serialize them.
-   If this is not valid, then either (i) each dataflash 'priv' structure
-   needs it's own transfer descriptor, (ii) we lock this one, or (iii) use
-   another mechanism.   */
-static struct spi_transfer_list* spi_transfer_desc;
-
-/*
- * Perform a SPI transfer to access the DataFlash device.
- */
-static int do_spi_transfer(int nr, char* tx, int tx_len, char* rx, int rx_len,
-		char* txnext, int txnext_len, char* rxnext, int rxnext_len)
-{
-	struct spi_transfer_list* list = spi_transfer_desc;
-
-	list->tx[0] = tx;	list->txlen[0] = tx_len;
-	list->rx[0] = rx;	list->rxlen[0] = rx_len;
-
-	list->tx[1] = txnext; 	list->txlen[1] = txnext_len;
-	list->rx[1] = rxnext;	list->rxlen[1] = rxnext_len;
-
-	list->nr_transfers = nr;
-	/* Note: spi_transfer() always returns 0, there are no error checks */
-	return spi_transfer(list);
-}
-
-/*
- * Return the status of the DataFlash device.
- */
-static unsigned char at91_dataflash26_status(void)
-{
-	unsigned char command[2];
-
-	command[0] = AT26_OP_READ_STATUS;
-	command[1] = 0;
-
-	do_spi_transfer(1, command, 2, command, 2, NULL, 0, NULL, 0);
-
-	return command[1];
-}
-
-/*
- * Poll the DataFlash device until it is READY.
- */
-static unsigned char at91_dataflash26_waitready(void)
-{
-	unsigned char status;
-
-	while (1) {
-		status = at91_dataflash26_status();
-		if (!(status & AT26_STATUS_BUSY))
-			return status;
-	}
-}
-
-/*
- * Enable/disable write access
- */
- static void at91_dataflash26_write_enable(int enable)
-{
-	unsigned char cmd[2];
-
-	DEBUG(MTD_DEBUG_LEVEL3, "write_enable: enable=%i\n", enable);
-
-	if (enable)
-		cmd[0] = AT26_OP_WRITE_ENABLE;
-	else
-		cmd[0] = AT26_OP_WRITE_DISABLE;
-	cmd[1] = 0;
-
-	do_spi_transfer(1, cmd, 2, cmd, 2, NULL, 0, NULL, 0);
-}
-
-/*
- * Protect/unprotect sector
- */
- static void at91_dataflash26_sector_protect(loff_t addr, int protect)
-{
-	unsigned char cmd[4];
-
-	DEBUG(MTD_DEBUG_LEVEL3, "sector_protect: addr=0x%06x prot=%d\n",
-	       addr, protect);
-
-	if (protect)
-		cmd[0] = AT26_OP_SECTOR_PROTECT;
-	else
-		cmd[0] = AT26_OP_SECTOR_UNPROTECT;
-	cmd[1] = (addr & 0x00FF0000) >> 16;
-	cmd[2] = (addr & 0x0000FF00) >> 8;
-	cmd[3] = (addr & 0x000000FF);
-
-	do_spi_transfer(1, cmd, 4, cmd, 4, NULL, 0, NULL, 0);
-}
-
-/*
- * Erase blocks of flash.
- */
-static int at91_dataflash26_erase(struct mtd_info *mtd,
-				  struct erase_info *instr)
-{
-	struct dataflash_local *priv = (struct dataflash_local *) mtd->priv;
-	unsigned char cmd[4];
-
-	DEBUG(MTD_DEBUG_LEVEL1, "dataflash_erase: addr=0x%06x len=%i\n",
-	       instr->addr, instr->len);
-
-	/* Sanity checks */
-	if (priv->page_size != 4096)
-		return -EINVAL; /* Can't handle other sizes at the moment */
-
-	if (   ((instr->len % mtd->erasesize) != 0)
-	    || ((instr->len % priv->page_size) != 0)
-	    || ((instr->addr % priv->page_size) != 0)
-	    || ((instr->addr + instr->len) > mtd->size))
-		return -EINVAL;
-
-	spi_access_bus(priv->spi);
-
-	while (instr->len > 0) {
-		at91_dataflash26_write_enable(1);
-		at91_dataflash26_sector_protect(instr->addr, 0);
-		at91_dataflash26_write_enable(1);
-		cmd[0] = AT26_OP_ERASE_PAGE_4K;
-		cmd[1] = (instr->addr & 0x00FF0000) >> 16;
-		cmd[2] = (instr->addr & 0x0000FF00) >> 8;
-		cmd[3] = (instr->addr & 0x000000FF);
-
-		DEBUG(MTD_DEBUG_LEVEL3, "ERASE: (0x%02x) 0x%02x 0x%02x"
-					"0x%02x\n",
-			cmd[0], cmd[1], cmd[2], cmd[3]);
-
-		do_spi_transfer(1, cmd, 4, cmd, 4, NULL, 0, NULL, 0);
-		at91_dataflash26_waitready();
-
-		instr->addr += priv->page_size;	 /* next page */
-		instr->len -= priv->page_size;
-	}
-
-	at91_dataflash26_write_enable(0);
-	spi_release_bus(priv->spi);
-
-	/* Inform MTD subsystem that erase is complete */
-	instr->state = MTD_ERASE_DONE;
-	if (instr->callback)
-		instr->callback(instr);
-
-	return 0;
-}
-
-/*
- * Read from the DataFlash device.
- *   from   : Start offset in flash device
- *   len    : Number of bytes to read
- *   retlen : Number of bytes actually read
- *   buf    : Buffer that will receive data
- */
-static int at91_dataflash26_read(struct mtd_info *mtd, loff_t from, size_t len,
-				 size_t *retlen, u_char *buf)
-{
-	struct dataflash_local *priv = (struct dataflash_local *) mtd->priv;
-	unsigned char cmd[5];
-
-	DEBUG(MTD_DEBUG_LEVEL1, "dataflash_read: %lli .. %lli\n",
-	      from, from+len);
-
-	*retlen = 0;
-
-	/* Sanity checks */
-	if (!len)
-		return 0;
-	if (from + len > mtd->size)
-		return -EINVAL;
-
-	cmd[0] = AT26_OP_READ_ARRAY_FAST;
-	cmd[1] = (from & 0x00FF0000) >> 16;
-	cmd[2] = (from & 0x0000FF00) >> 8;
-	cmd[3] = (from & 0x000000FF);
-	/* cmd[4] is a "Don't care" byte  */
-
-	DEBUG(MTD_DEBUG_LEVEL3, "READ: (0x%02x) 0x%02x 0x%02x 0x%02x\n",
-	       cmd[0], cmd[1], cmd[2], cmd[3]);
-
-	spi_access_bus(priv->spi);
-	do_spi_transfer(2, cmd, 5, cmd, 5, buf, len, buf, len);
-	spi_release_bus(priv->spi);
-
-	*retlen = len;
-	return 0;
-}
-
-/*
- * Write to the DataFlash device.
- *   to     : Start offset in flash device
- *   len    : Number of bytes to write
- *   retlen : Number of bytes actually written
- *   buf    : Buffer containing the data
- */
-static int at91_dataflash26_write(struct mtd_info *mtd, loff_t to, size_t len,
-				  size_t *retlen, const u_char *buf)
-{
-	struct dataflash_local *priv = (struct dataflash_local *) mtd->priv;
-	unsigned int addr, buf_index = 0;
-	int ret = -EIO, sector, last_sector;
-	unsigned char status, cmd[5];
-
-	DEBUG(MTD_DEBUG_LEVEL1, "dataflash_write: %lli .. %lli\n", to, to+len);
-
-	*retlen = 0;
-
-	/* Sanity checks */
-	if (!len)
-		return 0;
-	if (to + len > mtd->size)
-		return -EINVAL;
-
-	spi_access_bus(priv->spi);
-
-	addr = to;
-	last_sector = -1;
-
-	while (buf_index < len) {
-		sector = addr / priv->page_size;
-		/* Write first byte if a new sector begins */
-		if (sector != last_sector) {
-			at91_dataflash26_write_enable(1);
-			at91_dataflash26_sector_protect(addr, 0);
-			at91_dataflash26_write_enable(1);
-
-			/* Program first byte of a new sector */
-			cmd[0] = AT26_OP_SEQUENTIAL_WRITE;
-			cmd[1] = (addr & 0x00FF0000) >> 16;
-			cmd[2] = (addr & 0x0000FF00) >> 8;
-			cmd[3] = (addr & 0x000000FF);
-			cmd[4] = buf[buf_index++];
-			do_spi_transfer(1, cmd, 5, cmd, 5, NULL, 0, NULL, 0);
-			status = at91_dataflash26_waitready();
-			addr++;
-			/* On write errors, the chip resets the write enable
-			   flag. This also happens after the last byte of a
-			   sector is successfully programmed. */
-			if (   ( !(status & AT26_STATUS_WRITE_ENABLE))
-			    && ((addr % priv->page_size) != 0) ) {
-				DEBUG(MTD_DEBUG_LEVEL1,
-					"write error1: addr=0x%06x, "
-					"status=0x%02x\n", addr, status);
-				goto write_err;
-			}
-			(*retlen)++;
-			last_sector = sector;
-		}
-
-		/* Write subsequent bytes in the same sector */
-		cmd[0] = AT26_OP_SEQUENTIAL_WRITE;
-		cmd[1] = buf[buf_index++];
-		do_spi_transfer(1, cmd, 2, cmd, 2, NULL, 0, NULL, 0);
-		status = at91_dataflash26_waitready();
-		addr++;
-
-		if (   ( !(status & AT26_STATUS_WRITE_ENABLE))
-		    && ((addr % priv->page_size) != 0) ) {
-			DEBUG(MTD_DEBUG_LEVEL1, "write error2: addr=0x%06x, "
-				"status=0x%02x\n", addr, status);
-			goto write_err;
-		}
-
-		(*retlen)++;
-	}
-
-	ret = 0;
-	at91_dataflash26_write_enable(0);
-write_err:
-	spi_release_bus(priv->spi);
-	return ret;
-}
-
-/*
- * Initialize and register DataFlash device with MTD subsystem.
- */
-static int __init add_dataflash(int channel, char *name, int nr_pages,
-				int pagesize)
-{
-	struct mtd_info *device;
-	struct dataflash_local *priv;
-
-	if (nr_devices >= DATAFLASH_MAX_DEVICES) {
-		printk(KERN_ERR "at91_dataflash26: Too many devices "
-				"detected\n");
-		return 0;
-	}
-
-	device = kzalloc(sizeof(struct mtd_info) + strlen(name) + 8,
-			 GFP_KERNEL);
-	if (!device)
-		return -ENOMEM;
-
-	device->name = (char *)&device[1];
-	sprintf(device->name, "%s.spi%d", name, channel);
-	device->size = nr_pages * pagesize;
-	device->erasesize = pagesize;
-	device->owner = THIS_MODULE;
-	device->type = MTD_DATAFLASH;
-	device->flags = MTD_CAP_NORFLASH;
-	device->erase = at91_dataflash26_erase;
-	device->read = at91_dataflash26_read;
-	device->write = at91_dataflash26_write;
-
-	priv = (struct dataflash_local *)kzalloc(sizeof(struct dataflash_local),
-		GFP_KERNEL);
-	if (!priv) {
-		kfree(device);
-		return -ENOMEM;
-	}
-
-	priv->spi = channel;
-	priv->page_size = pagesize;
-	device->priv = priv;
-
-	mtd_devices[nr_devices] = device;
-	nr_devices++;
-	printk(KERN_INFO "at91_dataflash26: %s detected [spi%i] (%i bytes)\n",
-	       name, channel, device->size);
-
-	return add_mtd_device(device);
-}
-
-/*
- * Detect and initialize DataFlash device connected to specified SPI channel.
- *
- */
-
-struct dataflash26_types {
-	unsigned char id0;
-	unsigned char id1;
-	char *name;
-	int pagesize;
-	int nr_pages;
-};
-
-struct dataflash26_types df26_types[] = {
-	{
-		.id0 = 0x04,
-		.id1 = 0x00,
-		.name = "AT26F004",
-		.pagesize = 4096,
-		.nr_pages = 128,
-	},
-	{
-		.id0 = 0x45,
-		.id1 = 0x01,
-		.name = "AT26DF081A", /* Not tested ! */
-		.pagesize = 4096,
-		.nr_pages = 256,
-	},
-};
-
-static int __init at91_dataflash26_detect(int channel)
-{
-	unsigned char status, cmd[5];
-	int i;
-
-	spi_access_bus(channel);
-	status = at91_dataflash26_status();
-
-	if (status == 0 || status == 0xff) {
-		printk(KERN_ERR "at91_dataflash26_detect: status error %d\n",
-			status);
-		spi_release_bus(channel);
-		return -ENODEV;
-	}
-
-	cmd[0] = AT26_OP_READ_DEV_ID;
-	do_spi_transfer(1, cmd, 5, cmd, 5, NULL, 0, NULL, 0);
-	spi_release_bus(channel);
-
-	if (cmd[1] != MANUFACTURER_ID_ATMEL)
-		return -ENODEV;
-
-	for (i = 0; i < ARRAY_SIZE(df26_types); i++) {
-		if (   cmd[2] == df26_types[i].id0
-		    && cmd[3] == df26_types[i].id1)
-			return add_dataflash(channel,
-						df26_types[i].name,
-						df26_types[i].nr_pages,
-						df26_types[i].pagesize);
-	}
-
-	printk(KERN_ERR "at91_dataflash26_detect: Unsupported device "
-			"(0x%02x/0x%02x)\n", cmd[2], cmd[3]);
-	return -ENODEV;
-}
-
-static int __init at91_dataflash26_init(void)
-{
-	spi_transfer_desc = kmalloc(sizeof(struct spi_transfer_list),
-				    GFP_KERNEL);
-	if (!spi_transfer_desc)
-		return -ENOMEM;
-
-	/* DataFlash (SPI chip select 0) */
-	at91_dataflash26_detect(0);
-
-#ifdef CONFIG_MTD_AT91_DATAFLASH_CARD
-	/* DataFlash card (SPI chip select 3) */
-	at91_dataflash26_detect(3);
-#endif
-	return 0;
-}
-
-static void __exit at91_dataflash26_exit(void)
-{
-	int i;
-
-	for (i = 0; i < DATAFLASH_MAX_DEVICES; i++) {
-		if (mtd_devices[i]) {
-			del_mtd_device(mtd_devices[i]);
-			kfree(mtd_devices[i]->priv);
-			kfree(mtd_devices[i]);
-		}
-	}
-	nr_devices = 0;
-	kfree(spi_transfer_desc);
-}
-
-module_init(at91_dataflash26_init);
-module_exit(at91_dataflash26_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Hans J. Koch");
-MODULE_DESCRIPTION("DataFlash AT26xxx driver for Atmel AT91RM9200");