Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/mtd/nand/autcpu12.c b/drivers/mtd/nand/autcpu12.c
new file mode 100644
index 0000000..4afa8ce
--- /dev/null
+++ b/drivers/mtd/nand/autcpu12.c
@@ -0,0 +1,225 @@
+/*
+ * drivers/mtd/autcpu12.c
+ *
+ * Copyright (c) 2002 Thomas Gleixner <tgxl@linutronix.de>
+ *
+ * Derived from drivers/mtd/spia.c
+ * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
+ *
+ * $Id: autcpu12.c,v 1.22 2004/11/04 12:53:10 gleixner 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.
+ *
+ * Overview:
+ * This is a device driver for the NAND flash device found on the
+ * autronix autcpu12 board, which is a SmartMediaCard. It supports
+ * 16MiB, 32MiB and 64MiB cards.
+ *
+ *
+ * 02-12-2002 TG Cleanup of module params
+ *
+ * 02-20-2002 TG adjusted for different rd/wr adress support
+ * added support for read device ready/busy line
+ * added page_cache
+ *
+ * 10-06-2002 TG 128K card support added
+ */
+
+#include <linux/version.h>
+#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/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/sizes.h>
+#include <asm/arch/autcpu12.h>
+
+/*
+ * MTD structure for AUTCPU12 board
+ */
+static struct mtd_info *autcpu12_mtd = NULL;
+
+static int autcpu12_io_base = CS89712_VIRT_BASE;
+static int autcpu12_fio_pbase = AUTCPU12_PHYS_SMC;
+static int autcpu12_fio_ctrl = AUTCPU12_SMC_SELECT_OFFSET;
+static int autcpu12_pedr = AUTCPU12_SMC_PORT_OFFSET;
+static void __iomem * autcpu12_fio_base;
+
+/*
+ * Define partitions for flash devices
+ */
+static struct mtd_partition partition_info16k[] = {
+ { .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = 8 * SZ_1M },
+ { .name = "AUTCPU12 flash partition 2",
+ .offset = 8 * SZ_1M,
+ .size = 8 * SZ_1M },
+};
+
+static struct mtd_partition partition_info32k[] = {
+ { .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = 8 * SZ_1M },
+ { .name = "AUTCPU12 flash partition 2",
+ .offset = 8 * SZ_1M,
+ .size = 24 * SZ_1M },
+};
+
+static struct mtd_partition partition_info64k[] = {
+ { .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = 16 * SZ_1M },
+ { .name = "AUTCPU12 flash partition 2",
+ .offset = 16 * SZ_1M,
+ .size = 48 * SZ_1M },
+};
+
+static struct mtd_partition partition_info128k[] = {
+ { .name = "AUTCPU12 flash partition 1",
+ .offset = 0,
+ .size = 16 * SZ_1M },
+ { .name = "AUTCPU12 flash partition 2",
+ .offset = 16 * SZ_1M,
+ .size = 112 * SZ_1M },
+};
+
+#define NUM_PARTITIONS16K 2
+#define NUM_PARTITIONS32K 2
+#define NUM_PARTITIONS64K 2
+#define NUM_PARTITIONS128K 2
+/*
+ * hardware specific access to control-lines
+*/
+static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+
+ switch(cmd){
+
+ case NAND_CTL_SETCLE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) |= AUTCPU12_SMC_CLE; break;
+ case NAND_CTL_CLRCLE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) &= ~AUTCPU12_SMC_CLE; break;
+
+ case NAND_CTL_SETALE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) |= AUTCPU12_SMC_ALE; break;
+ case NAND_CTL_CLRALE: (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) &= ~AUTCPU12_SMC_ALE; break;
+
+ case NAND_CTL_SETNCE: (*(volatile unsigned char *) (autcpu12_fio_base + autcpu12_fio_ctrl)) = 0x01; break;
+ case NAND_CTL_CLRNCE: (*(volatile unsigned char *) (autcpu12_fio_base + autcpu12_fio_ctrl)) = 0x00; break;
+ }
+}
+
+/*
+* read device ready pin
+*/
+int autcpu12_device_ready(struct mtd_info *mtd)
+{
+
+ return ( (*(volatile unsigned char *) (autcpu12_io_base + autcpu12_pedr)) & AUTCPU12_SMC_RDY) ? 1 : 0;
+
+}
+
+/*
+ * Main initialization routine
+ */
+int __init autcpu12_init (void)
+{
+ struct nand_chip *this;
+ int err = 0;
+
+ /* Allocate memory for MTD device structure and private data */
+ autcpu12_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip),
+ GFP_KERNEL);
+ if (!autcpu12_mtd) {
+ printk ("Unable to allocate AUTCPU12 NAND MTD device structure.\n");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* map physical adress */
+ autcpu12_fio_base = ioremap(autcpu12_fio_pbase,SZ_1K);
+ if(!autcpu12_fio_base){
+ printk("Ioremap autcpu12 SmartMedia Card failed\n");
+ err = -EIO;
+ goto out_mtd;
+ }
+
+ /* Get pointer to private data */
+ this = (struct nand_chip *) (&autcpu12_mtd[1]);
+
+ /* Initialize structures */
+ memset((char *) autcpu12_mtd, 0, sizeof(struct mtd_info));
+ memset((char *) this, 0, sizeof(struct nand_chip));
+
+ /* Link the private data with the MTD structure */
+ autcpu12_mtd->priv = this;
+
+ /* Set address of NAND IO lines */
+ this->IO_ADDR_R = autcpu12_fio_base;
+ this->IO_ADDR_W = autcpu12_fio_base;
+ this->hwcontrol = autcpu12_hwcontrol;
+ this->dev_ready = autcpu12_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;
+ */
+ this->options = NAND_USE_FLASH_BBT;
+
+ /* Scan to find existance of the device */
+ if (nand_scan (autcpu12_mtd, 1)) {
+ err = -ENXIO;
+ goto out_ior;
+ }
+
+ /* Register the partitions */
+ switch(autcpu12_mtd->size){
+ case SZ_16M: add_mtd_partitions(autcpu12_mtd, partition_info16k, NUM_PARTITIONS16K); break;
+ case SZ_32M: add_mtd_partitions(autcpu12_mtd, partition_info32k, NUM_PARTITIONS32K); break;
+ case SZ_64M: add_mtd_partitions(autcpu12_mtd, partition_info64k, NUM_PARTITIONS64K); break;
+ case SZ_128M: add_mtd_partitions(autcpu12_mtd, partition_info128k, NUM_PARTITIONS128K); break;
+ default: {
+ printk ("Unsupported SmartMedia device\n");
+ err = -ENXIO;
+ goto out_ior;
+ }
+ }
+ goto out;
+
+out_ior:
+ iounmap((void *)autcpu12_fio_base);
+out_mtd:
+ kfree (autcpu12_mtd);
+out:
+ return err;
+}
+
+module_init(autcpu12_init);
+
+/*
+ * Clean up routine
+ */
+#ifdef MODULE
+static void __exit autcpu12_cleanup (void)
+{
+ /* Release resources, unregister device */
+ nand_release (autcpu12_mtd);
+
+ /* unmap physical adress */
+ iounmap((void *)autcpu12_fio_base);
+
+ /* Free the MTD device structure */
+ kfree (autcpu12_mtd);
+}
+module_exit(autcpu12_cleanup);
+#endif
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
+MODULE_DESCRIPTION("Glue layer for SmartMediaCard on autronix autcpu12");