1 files changed, 0 insertions, 349 deletions

diff --git a/target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c b/target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c
deleted file mode 100644
index 97cd810..0000000
--- a/target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/*
- * drivers/watchdog/ar7_wdt.c
- *
- * Copyright (C) 2007 Nicolas Thill <nico@openwrt.org>
- * Copyright (c) 2005 Enrik Berkhan <Enrik.Berkhan@akk.org>
- *
- * Some code taken from:
- * National Semiconductor SCx200 Watchdog support
- * Copyright (c) 2001,2002 Christer Weinigel <wingel@nano-system.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/fs.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-#include <linux/uaccess.h>
-
-#include <asm/addrspace.h>
-#include <asm/ar7/ar7.h>
-
-#define DRVNAME "ar7_wdt"
-#define LONGNAME "TI AR7 Watchdog Timer"
-
-MODULE_AUTHOR("Nicolas Thill <nico@openwrt.org>");
-MODULE_DESCRIPTION(LONGNAME);
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-
-static int margin = 60;
-module_param(margin, int, 0);
-MODULE_PARM_DESC(margin, "Watchdog margin in seconds");
-
-static int nowayout = WATCHDOG_NOWAYOUT;
-module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close");
-
-#define READ_REG(x) readl((void __iomem *)&(x))
-#define WRITE_REG(x, v) writel((v), (void __iomem *)&(x))
-
-struct ar7_wdt {
-	u32 kick_lock;
-	u32 kick;
-	u32 change_lock;
-	u32 change;
-	u32 disable_lock;
-	u32 disable;
-	u32 prescale_lock;
-	u32 prescale;
-};
-
-static struct semaphore open_semaphore;
-static unsigned expect_close;
-
-/* XXX currently fixed, allows max margin ~68.72 secs */
-#define prescale_value 0xffff
-
-/* Offset of the WDT registers */
-static unsigned long ar7_regs_wdt;
-/* Pointer to the remapped WDT IO space */
-static struct ar7_wdt *ar7_wdt;
-static void ar7_wdt_get_regs(void)
-{
-	u16 chip_id = ar7_chip_id();
-	switch (chip_id) {
-	case AR7_CHIP_7100:
-	case AR7_CHIP_7200:
-		ar7_regs_wdt = AR7_REGS_WDT;
-		break;
-	default:
-		ar7_regs_wdt = UR8_REGS_WDT;
-		break;
-	}
-}
-
-
-static void ar7_wdt_kick(u32 value)
-{
-	WRITE_REG(ar7_wdt->kick_lock, 0x5555);
-	if ((READ_REG(ar7_wdt->kick_lock) & 3) == 1) {
-		WRITE_REG(ar7_wdt->kick_lock, 0xaaaa);
-		if ((READ_REG(ar7_wdt->kick_lock) & 3) == 3) {
-			WRITE_REG(ar7_wdt->kick, value);
-			return;
-		}
-	}
-	printk(KERN_ERR DRVNAME ": failed to unlock WDT kick reg\n");
-}
-
-static void ar7_wdt_prescale(u32 value)
-{
-	WRITE_REG(ar7_wdt->prescale_lock, 0x5a5a);
-	if ((READ_REG(ar7_wdt->prescale_lock) & 3) == 1) {
-		WRITE_REG(ar7_wdt->prescale_lock, 0xa5a5);
-		if ((READ_REG(ar7_wdt->prescale_lock) & 3) == 3) {
-			WRITE_REG(ar7_wdt->prescale, value);
-			return;
-		}
-	}
-	printk(KERN_ERR DRVNAME ": failed to unlock WDT prescale reg\n");
-}
-
-static void ar7_wdt_change(u32 value)
-{
-	WRITE_REG(ar7_wdt->change_lock, 0x6666);
-	if ((READ_REG(ar7_wdt->change_lock) & 3) == 1) {
-		WRITE_REG(ar7_wdt->change_lock, 0xbbbb);
-		if ((READ_REG(ar7_wdt->change_lock) & 3) == 3) {
-			WRITE_REG(ar7_wdt->change, value);
-			return;
-		}
-	}
-	printk(KERN_ERR DRVNAME ": failed to unlock WDT change reg\n");
-}
-
-static void ar7_wdt_disable(u32 value)
-{
-	WRITE_REG(ar7_wdt->disable_lock, 0x7777);
-	if ((READ_REG(ar7_wdt->disable_lock) & 3) == 1) {
-		WRITE_REG(ar7_wdt->disable_lock, 0xcccc);
-		if ((READ_REG(ar7_wdt->disable_lock) & 3) == 2) {
-			WRITE_REG(ar7_wdt->disable_lock, 0xdddd);
-			if ((READ_REG(ar7_wdt->disable_lock) & 3) == 3) {
-				WRITE_REG(ar7_wdt->disable, value);
-				return;
-			}
-		}
-	}
-	printk(KERN_ERR DRVNAME ": failed to unlock WDT disable reg\n");
-}
-
-static void ar7_wdt_update_margin(int new_margin)
-{
-	u32 change;
-
-	change = new_margin * (ar7_vbus_freq() / prescale_value);
-	if (change < 1) change = 1;
-	if (change > 0xffff) change = 0xffff;
-	ar7_wdt_change(change);
-	margin = change * prescale_value / ar7_vbus_freq();
-	printk(KERN_INFO DRVNAME
-	       ": timer margin %d seconds (prescale %d, change %d, freq %d)\n",
-	       margin, prescale_value, change, ar7_vbus_freq());
-}
-
-static void ar7_wdt_enable_wdt(void)
-{
-	printk(KERN_DEBUG DRVNAME ": enabling watchdog timer\n");
-	ar7_wdt_disable(1);
-	ar7_wdt_kick(1);
-}
-
-static void ar7_wdt_disable_wdt(void)
-{
-	printk(KERN_DEBUG DRVNAME ": disabling watchdog timer\n");
-	ar7_wdt_disable(0);
-}
-
-static int ar7_wdt_open(struct inode *inode, struct file *file)
-{
-	/* only allow one at a time */
-	if (down_trylock(&open_semaphore))
-		return -EBUSY;
-	ar7_wdt_enable_wdt();
-	expect_close = 0;
-
-	return nonseekable_open(inode, file);
-}
-
-static int ar7_wdt_release(struct inode *inode, struct file *file)
-{
-	if (!expect_close)
-		printk(KERN_WARNING DRVNAME
-		": watchdog device closed unexpectedly,"
-		"will not disable the watchdog timer\n");
-	else if (!nowayout)
-		ar7_wdt_disable_wdt();
-
-	up(&open_semaphore);
-
-	return 0;
-}
-
-static int ar7_wdt_notify_sys(struct notifier_block *this,
-			      unsigned long code, void *unused)
-{
-	if (code == SYS_HALT || code == SYS_POWER_OFF)
-		if (!nowayout)
-			ar7_wdt_disable_wdt();
-
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block ar7_wdt_notifier = {
-	.notifier_call = ar7_wdt_notify_sys
-};
-
-static ssize_t ar7_wdt_write(struct file *file, const char *data,
-			     size_t len, loff_t *ppos)
-{
-	/* check for a magic close character */
-	if (len) {
-		size_t i;
-
-		ar7_wdt_kick(1);
-
-		expect_close = 0;
-		for (i = 0; i < len; ++i) {
-			char c;
-			if (get_user(c, data+i))
-				return -EFAULT;
-			if (c == 'V')
-				expect_close = 1;
-		}
-
-	}
-	return len;
-}
-
-static int ar7_wdt_ioctl(struct inode *inode, struct file *file,
-			 unsigned int cmd, unsigned long arg)
-{
-	static struct watchdog_info ident = {
-		.identity = LONGNAME,
-		.firmware_version = 1,
-		.options = (WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING),
-	};
-	int new_margin;
-
-	switch (cmd) {
-	default:
-		return -ENOTTY;
-	case WDIOC_GETSUPPORT:
-		if (copy_to_user((struct watchdog_info *)arg, &ident,
-				sizeof(ident)))
-			return -EFAULT;
-		return 0;
-	case WDIOC_GETSTATUS:
-	case WDIOC_GETBOOTSTATUS:
-		if (put_user(0, (int *)arg))
-			return -EFAULT;
-		return 0;
-	case WDIOC_KEEPALIVE:
-		ar7_wdt_kick(1);
-		return 0;
-	case WDIOC_SETTIMEOUT:
-		if (get_user(new_margin, (int *)arg))
-			return -EFAULT;
-		if (new_margin < 1)
-			return -EINVAL;
-
-		ar7_wdt_update_margin(new_margin);
-		ar7_wdt_kick(1);
-
-	case WDIOC_GETTIMEOUT:
-		if (put_user(margin, (int *)arg))
-			return -EFAULT;
-		return 0;
-	}
-}
-
-static struct file_operations ar7_wdt_fops = {
-	.owner		= THIS_MODULE,
-	.write		= ar7_wdt_write,
-	.ioctl		= ar7_wdt_ioctl,
-	.open		= ar7_wdt_open,
-	.release	= ar7_wdt_release,
-};
-
-static struct miscdevice ar7_wdt_miscdev = {
-	.minor		= WATCHDOG_MINOR,
-	.name		= "watchdog",
-	.fops		= &ar7_wdt_fops,
-};
-
-static int __init ar7_wdt_init(void)
-{
-	int rc;
-
-	ar7_wdt_get_regs();
-
-	if (!request_mem_region(ar7_regs_wdt, sizeof(struct ar7_wdt),
-							LONGNAME)) {
-		printk(KERN_WARNING DRVNAME ": watchdog I/O region busy\n");
-		return -EBUSY;
-	}
-
-	ar7_wdt = (struct ar7_wdt *)
-			ioremap(ar7_regs_wdt, sizeof(struct ar7_wdt));
-
-	ar7_wdt_disable_wdt();
-	ar7_wdt_prescale(prescale_value);
-	ar7_wdt_update_margin(margin);
-
-	sema_init(&open_semaphore, 1);
-
-	rc = register_reboot_notifier(&ar7_wdt_notifier);
-	if (rc) {
-		printk(KERN_ERR DRVNAME
-			": unable to register reboot notifier\n");
-		goto out_alloc;
-	}
-
-	rc = misc_register(&ar7_wdt_miscdev);
-	if (rc) {
-		printk(KERN_ERR DRVNAME ": unable to register misc device\n");
-		goto out_register;
-	}
-	goto out;
-
-out_register:
-	unregister_reboot_notifier(&ar7_wdt_notifier);
-out_alloc:
-	iounmap(ar7_wdt);
-	release_mem_region(ar7_regs_wdt, sizeof(struct ar7_wdt));
-out:
-	return rc;
-}
-
-static void __exit ar7_wdt_cleanup(void)
-{
-	misc_deregister(&ar7_wdt_miscdev);
-	unregister_reboot_notifier(&ar7_wdt_notifier);
-	iounmap(ar7_wdt);
-	release_mem_region(ar7_regs_wdt, sizeof(struct ar7_wdt));
-}
-
-module_init(ar7_wdt_init);
-module_exit(ar7_wdt_cleanup);