Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 205 insertions, 0 deletions

diff --git a/drivers/mtd/nand/toto.c b/drivers/mtd/nand/toto.c
new file mode 100644
index 0000000..52c808f
--- /dev/null
+++ b/drivers/mtd/nand/toto.c
@@ -0,0 +1,205 @@
+/*
+ *  drivers/mtd/nand/toto.c
+ *
+ *  Copyright (c) 2003 Texas Instruments
+ *
+ *  Derived from drivers/mtd/autcpu12.c
+ *
+ *  Copyright (c) 2002 Thomas Gleixner <tgxl@linutronix.de>
+ *
+ * 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
+ *   TI fido board. It supports 32MiB and 64MiB cards
+ *
+ * $Id: toto.c,v 1.4 2004/10/05 13:50:20 gleixner Exp $
+ */
+
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/delay.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/toto.h>
+#include <asm/arch-omap1510/hardware.h>
+#include <asm/arch/gpio.h>
+
+/*
+ * MTD structure for TOTO board
+ */
+static struct mtd_info *toto_mtd = NULL;
+
+static unsigned long toto_io_base = OMAP_FLASH_1_BASE;
+
+#define CONFIG_NAND_WORKAROUND 1
+
+#define NAND_NCE 0x4000
+#define NAND_CLE 0x1000
+#define NAND_ALE 0x0002
+#define NAND_MASK (NAND_CLE | NAND_ALE | NAND_NCE)
+
+#define T_NAND_CTL_CLRALE(iob)  gpiosetout(NAND_ALE, 0)
+#define T_NAND_CTL_SETALE(iob)  gpiosetout(NAND_ALE, NAND_ALE)
+#ifdef CONFIG_NAND_WORKAROUND     /* "some" dev boards busted, blue wired to rts2 :( */
+#define T_NAND_CTL_CLRCLE(iob)  gpiosetout(NAND_CLE, 0); rts2setout(2, 2)
+#define T_NAND_CTL_SETCLE(iob)  gpiosetout(NAND_CLE, NAND_CLE); rts2setout(2, 0)
+#else
+#define T_NAND_CTL_CLRCLE(iob)  gpiosetout(NAND_CLE, 0)
+#define T_NAND_CTL_SETCLE(iob)  gpiosetout(NAND_CLE, NAND_CLE)
+#endif
+#define T_NAND_CTL_SETNCE(iob)  gpiosetout(NAND_NCE, 0)
+#define T_NAND_CTL_CLRNCE(iob)  gpiosetout(NAND_NCE, NAND_NCE)
+                
+/*
+ * Define partitions for flash devices
+ */
+
+static struct mtd_partition partition_info64M[] = {
+	{ .name =	"toto kernel partition 1",
+	  .offset =	0,
+	  .size	=	2 * SZ_1M },
+	{ .name =	"toto file sys partition 2",
+	  .offset =	2 * SZ_1M,
+	  .size =	14 * SZ_1M },
+	{ .name =	"toto user partition 3",
+	  .offset =	16 * SZ_1M,
+	  .size =	16 * SZ_1M },
+	{ .name =	"toto devboard extra partition 4",
+	  .offset =	32 * SZ_1M,
+	  .size =	32 * SZ_1M },
+};
+
+static struct mtd_partition partition_info32M[] = {
+	{ .name =	"toto kernel partition 1",
+	  .offset =	0,
+	  .size =	2 * SZ_1M },
+	{ .name =	"toto file sys partition 2",
+	  .offset =	2 * SZ_1M,
+	  .size =	14 * SZ_1M },
+	{ .name =	"toto user partition 3",
+	  .offset =	16 * SZ_1M,
+	  .size =	16 * SZ_1M },
+};
+
+#define NUM_PARTITIONS32M 3
+#define NUM_PARTITIONS64M 4
+/* 
+ *	hardware specific access to control-lines
+*/
+
+static void toto_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+
+	udelay(1); /* hopefully enough time for tc make proceding write to clear */
+	switch(cmd){
+
+		case NAND_CTL_SETCLE: T_NAND_CTL_SETCLE(cmd); break;
+		case NAND_CTL_CLRCLE: T_NAND_CTL_CLRCLE(cmd); break;
+
+		case NAND_CTL_SETALE: T_NAND_CTL_SETALE(cmd); break;
+		case NAND_CTL_CLRALE: T_NAND_CTL_CLRALE(cmd); break;
+
+		case NAND_CTL_SETNCE: T_NAND_CTL_SETNCE(cmd); break;
+		case NAND_CTL_CLRNCE: T_NAND_CTL_CLRNCE(cmd); break;
+	}
+	udelay(1); /* allow time to ensure gpio state to over take memory write */
+}
+
+/*
+ * Main initialization routine
+ */
+int __init toto_init (void)
+{
+	struct nand_chip *this;
+	int err = 0;
+
+	/* Allocate memory for MTD device structure and private data */
+	toto_mtd = kmalloc (sizeof(struct mtd_info) + sizeof (struct nand_chip),
+				GFP_KERNEL);
+	if (!toto_mtd) {
+		printk (KERN_WARNING "Unable to allocate toto NAND MTD device structure.\n");
+		err = -ENOMEM;
+		goto out;
+	}
+
+	/* Get pointer to private data */
+	this = (struct nand_chip *) (&toto_mtd[1]);
+
+	/* Initialize structures */
+	memset((char *) toto_mtd, 0, sizeof(struct mtd_info));
+	memset((char *) this, 0, sizeof(struct nand_chip));
+
+	/* Link the private data with the MTD structure */
+	toto_mtd->priv = this;
+
+	/* Set address of NAND IO lines */
+	this->IO_ADDR_R = toto_io_base;
+	this->IO_ADDR_W = toto_io_base;
+	this->hwcontrol = toto_hwcontrol;
+	this->dev_ready = NULL;
+	/* 25 us command delay time */
+	this->chip_delay = 30;		
+	this->eccmode = NAND_ECC_SOFT;
+
+        /* Scan to find existance of the device */
+	if (nand_scan (toto_mtd, 1)) {
+		err = -ENXIO;
+		goto out_mtd;
+	}
+
+	/* Register the partitions */
+	switch(toto_mtd->size){
+		case SZ_64M: add_mtd_partitions(toto_mtd, partition_info64M, NUM_PARTITIONS64M); break; 
+		case SZ_32M: add_mtd_partitions(toto_mtd, partition_info32M, NUM_PARTITIONS32M); break; 
+		default: {
+			printk (KERN_WARNING "Unsupported Nand device\n"); 
+			err = -ENXIO;
+			goto out_buf;
+		}
+	}
+
+    	gpioreserve(NAND_MASK);  /* claim our gpios */
+    	archflashwp(0,0);	 /* open up flash for writing */
+
+	goto out;
+    
+out_buf:
+	kfree (this->data_buf);    
+out_mtd:
+	kfree (toto_mtd);
+out:
+	return err;
+}
+
+module_init(toto_init);
+
+/*
+ * Clean up routine
+ */
+static void __exit toto_cleanup (void)
+{
+	/* Release resources, unregister device */
+	nand_release (toto_mtd);
+
+	/* Free the MTD device structure */
+	kfree (toto_mtd);
+
+	/* stop flash writes */
+	 archflashwp(0,1);
+	
+	/* release gpios to system */
+	 gpiorelease(NAND_MASK);
+}
+module_exit(toto_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Richard Woodruff <r-woodruff2@ti.com>");
+MODULE_DESCRIPTION("Glue layer for NAND flash on toto board");