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authorWim Van Sebroeck <wim@iguana.be>2007-08-17 08:38:02 +0000
committerWim Van Sebroeck <wim@iguana.be>2007-10-18 10:39:03 +0000
commitb7e04f8c61a46d742de23af5d7ca2b41b33e40ac (patch)
treec52a7ea568648e2d8ed0d423098b42298de2058b /drivers/char/watchdog/sbc_epx_c3.c
parentd85714d81cc0408daddb68c10f7fd69eafe7c213 (diff)
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mv watchdog tree under drivers
move watchdog tree from drivers/char/watchdog to drivers/watchdog. Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/char/watchdog/sbc_epx_c3.c')
-rw-r--r--drivers/char/watchdog/sbc_epx_c3.c223
1 files changed, 0 insertions, 223 deletions
diff --git a/drivers/char/watchdog/sbc_epx_c3.c b/drivers/char/watchdog/sbc_epx_c3.c
deleted file mode 100644
index 82cbd8809a69..000000000000
--- a/drivers/char/watchdog/sbc_epx_c3.c
+++ /dev/null
@@ -1,223 +0,0 @@
-/*
- * SBC EPX C3 0.1 A Hardware Watchdog Device for the Winsystems EPX-C3
- * single board computer
- *
- * (c) Copyright 2006 Calin A. Culianu <calin@ajvar.org>, All Rights
- * Reserved.
- *
- * 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.
- *
- * based on softdog.c by Alan Cox <alan@redhat.com>
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#define PFX "epx_c3: "
-static int epx_c3_alive;
-
-#define WATCHDOG_TIMEOUT 1 /* 1 sec default timeout */
-
-static int nowayout = WATCHDOG_NOWAYOUT;
-module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
-
-#define EPXC3_WATCHDOG_CTL_REG 0x1ee /* write 1 to enable, 0 to disable */
-#define EPXC3_WATCHDOG_PET_REG 0x1ef /* write anything to pet once enabled */
-
-static void epx_c3_start(void)
-{
- outb(1, EPXC3_WATCHDOG_CTL_REG);
-}
-
-static void epx_c3_stop(void)
-{
-
- outb(0, EPXC3_WATCHDOG_CTL_REG);
-
- printk(KERN_INFO PFX "Stopped watchdog timer.\n");
-}
-
-static void epx_c3_pet(void)
-{
- outb(1, EPXC3_WATCHDOG_PET_REG);
-}
-
-/*
- * Allow only one person to hold it open
- */
-static int epx_c3_open(struct inode *inode, struct file *file)
-{
- if (epx_c3_alive)
- return -EBUSY;
-
- if (nowayout)
- __module_get(THIS_MODULE);
-
- /* Activate timer */
- epx_c3_start();
- epx_c3_pet();
-
- epx_c3_alive = 1;
- printk(KERN_INFO "Started watchdog timer.\n");
-
- return nonseekable_open(inode, file);
-}
-
-static int epx_c3_release(struct inode *inode, struct file *file)
-{
- /* Shut off the timer.
- * Lock it in if it's a module and we defined ...NOWAYOUT */
- if (!nowayout)
- epx_c3_stop(); /* Turn the WDT off */
-
- epx_c3_alive = 0;
-
- return 0;
-}
-
-static ssize_t epx_c3_write(struct file *file, const char __user *data,
- size_t len, loff_t *ppos)
-{
- /* Refresh the timer. */
- if (len)
- epx_c3_pet();
- return len;
-}
-
-static int epx_c3_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int options, retval = -EINVAL;
- int __user *argp = (void __user *)arg;
- static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING |
- WDIOF_MAGICCLOSE,
- .firmware_version = 0,
- .identity = "Winsystems EPX-C3 H/W Watchdog",
- };
-
- switch (cmd) {
- case WDIOC_GETSUPPORT:
- if (copy_to_user(argp, &ident, sizeof(ident)))
- return -EFAULT;
- return 0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, argp);
- case WDIOC_KEEPALIVE:
- epx_c3_pet();
- return 0;
- case WDIOC_GETTIMEOUT:
- return put_user(WATCHDOG_TIMEOUT, argp);
- case WDIOC_SETOPTIONS:
- if (get_user(options, argp))
- return -EFAULT;
-
- if (options & WDIOS_DISABLECARD) {
- epx_c3_stop();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- epx_c3_start();
- retval = 0;
- }
-
- return retval;
- default:
- return -ENOTTY;
- }
-}
-
-static int epx_c3_notify_sys(struct notifier_block *this, unsigned long code,
- void *unused)
-{
- if (code == SYS_DOWN || code == SYS_HALT)
- epx_c3_stop(); /* Turn the WDT off */
-
- return NOTIFY_DONE;
-}
-
-static const struct file_operations epx_c3_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = epx_c3_write,
- .ioctl = epx_c3_ioctl,
- .open = epx_c3_open,
- .release = epx_c3_release,
-};
-
-static struct miscdevice epx_c3_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &epx_c3_fops,
-};
-
-static struct notifier_block epx_c3_notifier = {
- .notifier_call = epx_c3_notify_sys,
-};
-
-static const char banner[] __initdata =
- KERN_INFO PFX "Hardware Watchdog Timer for Winsystems EPX-C3 SBC: 0.1\n";
-
-static int __init watchdog_init(void)
-{
- int ret;
-
- if (!request_region(EPXC3_WATCHDOG_CTL_REG, 2, "epxc3_watchdog"))
- return -EBUSY;
-
- ret = register_reboot_notifier(&epx_c3_notifier);
- if (ret) {
- printk(KERN_ERR PFX "cannot register reboot notifier "
- "(err=%d)\n", ret);
- goto out;
- }
-
- ret = misc_register(&epx_c3_miscdev);
- if (ret) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d "
- "(err=%d)\n", WATCHDOG_MINOR, ret);
- unregister_reboot_notifier(&epx_c3_notifier);
- goto out;
- }
-
- printk(banner);
-
- return 0;
-
-out:
- release_region(EPXC3_WATCHDOG_CTL_REG, 2);
- return ret;
-}
-
-static void __exit watchdog_exit(void)
-{
- misc_deregister(&epx_c3_miscdev);
- unregister_reboot_notifier(&epx_c3_notifier);
- release_region(EPXC3_WATCHDOG_CTL_REG, 2);
-}
-
-module_init(watchdog_init);
-module_exit(watchdog_exit);
-
-MODULE_AUTHOR("Calin A. Culianu <calin@ajvar.org>");
-MODULE_DESCRIPTION("Hardware Watchdog Device for Winsystems EPX-C3 SBC. Note that there is no way to probe for this device -- so only use it if you are *sure* you are runnning on this specific SBC system from Winsystems! It writes to IO ports 0x1ee and 0x1ef!");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);