summaryrefslogtreecommitdiff
path: root/drivers/watchdog/mpc8xx_wdt.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/watchdog/mpc8xx_wdt.c')
-rw-r--r--drivers/watchdog/mpc8xx_wdt.c170
1 files changed, 0 insertions, 170 deletions
diff --git a/drivers/watchdog/mpc8xx_wdt.c b/drivers/watchdog/mpc8xx_wdt.c
deleted file mode 100644
index 1336425acf20..000000000000
--- a/drivers/watchdog/mpc8xx_wdt.c
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
- * mpc8xx_wdt.c - MPC8xx watchdog userspace interface
- *
- * Author: Florian Schirmer <jolt@tuxbox.org>
- *
- * 2002 (c) Florian Schirmer <jolt@tuxbox.org> 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.
- */
-
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/miscdevice.h>
-#include <linux/module.h>
-#include <linux/watchdog.h>
-#include <asm/8xx_immap.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-#include <syslib/m8xx_wdt.h>
-
-static unsigned long wdt_opened;
-static int wdt_status;
-static spinlock_t wdt_lock;
-
-static void mpc8xx_wdt_handler_disable(void)
-{
- volatile uint __iomem *piscr;
- piscr = (uint *)&((immap_t *)IMAP_ADDR)->im_sit.sit_piscr;
-
- if (!m8xx_has_internal_rtc)
- m8xx_wdt_stop_timer();
- else
- out_be32(piscr, in_be32(piscr) & ~(PISCR_PIE | PISCR_PTE));
- printk(KERN_NOTICE "mpc8xx_wdt: keep-alive handler deactivated\n");
-}
-
-static void mpc8xx_wdt_handler_enable(void)
-{
- volatile uint __iomem *piscr;
- piscr = (uint *)&((immap_t *)IMAP_ADDR)->im_sit.sit_piscr;
-
- if (!m8xx_has_internal_rtc)
- m8xx_wdt_install_timer();
- else
- out_be32(piscr, in_be32(piscr) | PISCR_PIE | PISCR_PTE);
- printk(KERN_NOTICE "mpc8xx_wdt: keep-alive handler activated\n");
-}
-
-static int mpc8xx_wdt_open(struct inode *inode, struct file *file)
-{
- if (test_and_set_bit(0, &wdt_opened))
- return -EBUSY;
- m8xx_wdt_reset();
- mpc8xx_wdt_handler_disable();
- return nonseekable_open(inode, file);
-}
-
-static int mpc8xx_wdt_release(struct inode *inode, struct file *file)
-{
- m8xx_wdt_reset();
-#if !defined(CONFIG_WATCHDOG_NOWAYOUT)
- mpc8xx_wdt_handler_enable();
-#endif
- clear_bit(0, &wdt_opened);
- return 0;
-}
-
-static ssize_t mpc8xx_wdt_write(struct file *file, const char *data,
- size_t len, loff_t *ppos)
-{
- if (len) {
- spin_lock(&wdt_lock);
- m8xx_wdt_reset();
- spin_unlock(&wdt_lock);
- }
- return len;
-}
-
-static long mpc8xx_wdt_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int timeout;
- static struct watchdog_info info = {
- .options = WDIOF_KEEPALIVEPING,
- .firmware_version = 0,
- .identity = "MPC8xx watchdog",
- };
-
- switch (cmd) {
- case WDIOC_GETSUPPORT:
- if (copy_to_user((void *)arg, &info, sizeof(info)))
- return -EFAULT;
- break;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- if (put_user(wdt_status, (int *)arg))
- return -EFAULT;
- wdt_status &= ~WDIOF_KEEPALIVEPING;
- break;
-
- case WDIOC_GETTEMP:
- return -EOPNOTSUPP;
-
- case WDIOC_SETOPTIONS:
- return -EOPNOTSUPP;
-
- case WDIOC_KEEPALIVE:
- spin_lock(&wdt_lock);
- m8xx_wdt_reset();
- wdt_status |= WDIOF_KEEPALIVEPING;
- spin_unlock(&wdt_lock);
- break;
-
- case WDIOC_SETTIMEOUT:
- return -EOPNOTSUPP;
-
- case WDIOC_GETTIMEOUT:
- spin_lock(&wdt_lock);
- timeout = m8xx_wdt_get_timeout();
- spin_unlock(&wdt_lock);
- if (put_user(timeout, (int *)arg))
- return -EFAULT;
- break;
-
- default:
- return -ENOTTY;
- }
-
- return 0;
-}
-
-static const struct file_operations mpc8xx_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = mpc8xx_wdt_write,
- .unlocked_ioctl = mpc8xx_wdt_ioctl,
- .open = mpc8xx_wdt_open,
- .release = mpc8xx_wdt_release,
-};
-
-static struct miscdevice mpc8xx_wdt_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &mpc8xx_wdt_fops,
-};
-
-static int __init mpc8xx_wdt_init(void)
-{
- spin_lock_init(&wdt_lock);
- return misc_register(&mpc8xx_wdt_miscdev);
-}
-
-static void __exit mpc8xx_wdt_exit(void)
-{
- misc_deregister(&mpc8xx_wdt_miscdev);
-
- m8xx_wdt_reset();
- mpc8xx_wdt_handler_enable();
-}
-
-module_init(mpc8xx_wdt_init);
-module_exit(mpc8xx_wdt_exit);
-
-MODULE_AUTHOR("Florian Schirmer <jolt@tuxbox.org>");
-MODULE_DESCRIPTION("MPC8xx watchdog driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);