1 files changed, 0 insertions, 253 deletions
diff --git a/drivers/char/watchdog/ep93xx_wdt.c b/drivers/char/watchdog/ep93xx_wdt.c
deleted file mode 100644
index 0e4787a0bb8..00000000000
--- a/drivers/char/watchdog/ep93xx_wdt.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- * Watchdog driver for Cirrus Logic EP93xx family of devices.
- *
- * Copyright (c) 2004 Ray Lehtiniemi
- * Copyright (c) 2006 Tower Technologies
- * Based on ep93xx driver, bits from alim7101_wdt.c
- *
- * Authors: Ray Lehtiniemi <rayl@mail.com>,
- *	Alessandro Zummo <a.zummo@towertech.it>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- *
- * This watchdog fires after 250msec, which is a too short interval
- * for us to rely on the user space daemon alone. So we ping the
- * wdt each ~200msec and eventually stop doing it if the user space
- * daemon dies.
- *
- * TODO:
- *
- *	- Test last reset from watchdog status
- *	- Add a few missing ioctls
- */
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/timer.h>
-
-#include <asm/hardware.h>
-#include <asm/uaccess.h>
-
-#define WDT_VERSION	"0.3"
-#define PFX		"ep93xx_wdt: "
-
-/* default timeout (secs) */
-#define WDT_TIMEOUT 30
-
-static int nowayout = WATCHDOG_NOWAYOUT;
-static int timeout = WDT_TIMEOUT;
-
-static struct timer_list timer;
-static unsigned long next_heartbeat;
-static unsigned long wdt_status;
-static unsigned long boot_status;
-
-#define WDT_IN_USE		0
-#define WDT_OK_TO_CLOSE		1
-
-#define EP93XX_WDT_REG(x)	(EP93XX_WATCHDOG_BASE + (x))
-#define EP93XX_WDT_WATCHDOG	EP93XX_WDT_REG(0x00)
-#define EP93XX_WDT_WDSTATUS	EP93XX_WDT_REG(0x04)
-
-/* reset the wdt every ~200ms */
-#define WDT_INTERVAL (HZ/5)
-
-static void wdt_enable(void)
-{
-	__raw_writew(0xaaaa, EP93XX_WDT_WATCHDOG);
-}
-
-static void wdt_disable(void)
-{
-	__raw_writew(0xaa55, EP93XX_WDT_WATCHDOG);
-}
-
-static inline void wdt_ping(void)
-{
-	__raw_writew(0x5555, EP93XX_WDT_WATCHDOG);
-}
-
-static void wdt_startup(void)
-{
-	next_heartbeat = jiffies + (timeout * HZ);
-
-	wdt_enable();
-	mod_timer(&timer, jiffies + WDT_INTERVAL);
-}
-
-static void wdt_shutdown(void)
-{
-	del_timer_sync(&timer);
-	wdt_disable();
-}
-
-static void wdt_keepalive(void)
-{
-	/* user land ping */
-	next_heartbeat = jiffies + (timeout * HZ);
-}
-
-static int ep93xx_wdt_open(struct inode *inode, struct file *file)
-{
-	if (test_and_set_bit(WDT_IN_USE, &wdt_status))
-		return -EBUSY;
-
-	clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-
-	wdt_startup();
-
-	return nonseekable_open(inode, file);
-}
-
-static ssize_t
-ep93xx_wdt_write(struct file *file, const char __user *data, size_t len,
-		 loff_t *ppos)
-{
-	if (len) {
-		if (!nowayout) {
-			size_t i;
-
-			clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-
-			for (i = 0; i != len; i++) {
-				char c;
-
-				if (get_user(c, data + i))
-					return -EFAULT;
-
-				if (c == 'V')
-					set_bit(WDT_OK_TO_CLOSE, &wdt_status);
-				else
-					clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-			}
-		}
-		wdt_keepalive();
-	}
-
-	return len;
-}
-
-static struct watchdog_info ident = {
-	.options = WDIOF_CARDRESET | WDIOF_MAGICCLOSE,
-	.identity = "EP93xx Watchdog",
-};
-
-static int
-ep93xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-		 unsigned long arg)
-{
-	int ret = -ENOTTY;
-
-	switch (cmd) {
-	case WDIOC_GETSUPPORT:
-		ret = copy_to_user((struct watchdog_info __user *)arg, &ident,
-				sizeof(ident)) ? -EFAULT : 0;
-		break;
-
-	case WDIOC_GETSTATUS:
-		ret = put_user(0, (int __user *)arg);
-		break;
-
-	case WDIOC_GETBOOTSTATUS:
-		ret = put_user(boot_status, (int __user *)arg);
-		break;
-
-	case WDIOC_GETTIMEOUT:
-		/* actually, it is 0.250 seconds.... */
-		ret = put_user(1, (int __user *)arg);
-		break;
-
-	case WDIOC_KEEPALIVE:
-		wdt_keepalive();
-		ret = 0;
-		break;
-	}
-	return ret;
-}
-
-static int ep93xx_wdt_release(struct inode *inode, struct file *file)
-{
-	if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
-		wdt_shutdown();
-	else
-		printk(KERN_CRIT PFX "Device closed unexpectedly - "
-			"timer will not stop\n");
-
-	clear_bit(WDT_IN_USE, &wdt_status);
-	clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-
-	return 0;
-}
-
-static const struct file_operations ep93xx_wdt_fops = {
-	.owner		= THIS_MODULE,
-	.write		= ep93xx_wdt_write,
-	.ioctl		= ep93xx_wdt_ioctl,
-	.open		= ep93xx_wdt_open,
-	.release	= ep93xx_wdt_release,
-};
-
-static struct miscdevice ep93xx_wdt_miscdev = {
-	.minor		= WATCHDOG_MINOR,
-	.name		= "watchdog",
-	.fops		= &ep93xx_wdt_fops,
-};
-
-static void ep93xx_timer_ping(unsigned long data)
-{
-	if (time_before(jiffies, next_heartbeat))
-		wdt_ping();
-
-	/* Re-set the timer interval */
-	mod_timer(&timer, jiffies + WDT_INTERVAL);
-}
-
-static int __init ep93xx_wdt_init(void)
-{
-	int err;
-
-	err = misc_register(&ep93xx_wdt_miscdev);
-
-	boot_status = __raw_readl(EP93XX_WDT_WATCHDOG) & 0x01 ? 1 : 0;
-
-	printk(KERN_INFO PFX "EP93XX watchdog, driver version "
-		WDT_VERSION "%s\n",
-		(__raw_readl(EP93XX_WDT_WATCHDOG) & 0x08)
-		? " (nCS1 disable detected)" : "");
-
-	if (timeout < 1 || timeout > 3600) {
-		timeout = WDT_TIMEOUT;
-		printk(KERN_INFO PFX
-			"timeout value must be 1<=x<=3600, using %d\n",
-			timeout);
-	}
-
-	setup_timer(&timer, ep93xx_timer_ping, 1);
-	return err;
-}
-
-static void __exit ep93xx_wdt_exit(void)
-{
-	wdt_shutdown();
-	misc_deregister(&ep93xx_wdt_miscdev);
-}
-
-module_init(ep93xx_wdt_init);
-module_exit(ep93xx_wdt_exit);
-
-module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
-
-module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
-
-MODULE_AUTHOR("Ray Lehtiniemi <rayl@mail.com>,"
-		"Alessandro Zummo <a.zummo@towertech.it>");
-MODULE_DESCRIPTION("EP93xx Watchdog");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(WDT_VERSION);
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);