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cleanup watchdog
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@3666 3c298f89-4303-0410-b956-a3cf2f4a3e73
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69de0f2992
@ -1,7 +1,7 @@
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diff -Nur linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c linux-2.6.15.1-openwrt/drivers/char/watchdog/wdt_merlot.c
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--- linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c 2006-01-26 21:14:02.204626250 -0800
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+++ linux-2.6.15.1-openwrt/drivers/char/watchdog/wdt_merlot.c 2006-02-02 20:31:43.000000000 -0800
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@@ -0,0 +1,141 @@
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@@ -0,0 +1,110 @@
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+#include <linux/config.h>
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+#include <linux/module.h>
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+#include <linux/types.h>
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@ -14,17 +14,13 @@ diff -Nur linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c linux-2.6.15.1-openw
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+#include <asm/system.h>
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+#include <asm/bootinfo.h>
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+
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+// refresh the watchdog timer for this many seconds in kernel
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+// before letting the watchdog process take over.
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+#define WDT_COUNT 60
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+
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+extern unsigned long mips_machtype;
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+
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+static unsigned long wdt_is_open;
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+static struct timer_list wdt_timer;
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+static int wdt_count = WDT_COUNT;
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+
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+static void wdt_merlot_refresh(void){
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+static void wdt_merlot_refresh(void)
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+{
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+ volatile __u32 *wdt;
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+ switch (mips_machtype) {
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+ case MACH_ARUBA_AP70:
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@ -38,42 +34,15 @@ diff -Nur linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c linux-2.6.15.1-openw
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+ }
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+}
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+
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+static void wdt_merlot_disable()
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+static void wdt_merlot_timer_fn(unsigned long data)
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+{
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+ volatile __u32 *wdt_errcs;
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+ volatile __u32 *wdt_wtc;
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+ volatile __u32 *wdt_ctl;
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+ volatile __u32 val ;
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+
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+ switch (mips_machtype) {
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+ case MACH_ARUBA_AP70:
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+ wdt_errcs = (__u32 *)0xb8030030 ;
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+ wdt_wtc = (__u32 *)0xb803003c ;
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+ val = *wdt_errcs ;
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+ val &= ~0x201 ;
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+ *wdt_errcs = val ;
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+ val = *wdt_wtc ;
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+ val &= ~0x1 ;
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+ *wdt_wtc = val ;
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+ break;
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+ default:
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+ wdt_ctl = (__u32 *)0xbc003008;
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+ *wdt_ctl = 0 ;
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+ break;
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+ }
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+}
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+
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+static void wdt_merlot_timer_fn(unsigned long data){
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+
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+ wdt_merlot_refresh();
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+ if (--wdt_count >= 0)
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+ if (!test_bit(1, &wdt_is_open))
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+ mod_timer(&wdt_timer, jiffies + HZ);
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+ else
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+ wdt_merlot_disable();
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+
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+}
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+
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+static int wdt_merlot_setup_timer(void){
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+static int wdt_merlot_setup_timer(void)
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+{
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+
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+ init_timer(&wdt_timer);
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+ wdt_timer.function = wdt_merlot_timer_fn;
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@ -87,15 +56,14 @@ diff -Nur linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c linux-2.6.15.1-openw
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+{
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+ if (test_and_set_bit(0, &wdt_is_open))
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+ return -EBUSY;
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+ wdt_count=0;
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+ set_bit(1, &wdt_is_open);
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+ return nonseekable_open(inode, file);
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+}
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+
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+static ssize_t wdt_write(struct file *file, const char __user * buf, size_t count, loff_t * ppos)
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+{
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+ if (count) { /* something was written */
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+ if (count) /* something was written */
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+ wdt_merlot_refresh();
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+ }
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+ return count;
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+}
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+
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@ -129,7 +97,8 @@ diff -Nur linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c linux-2.6.15.1-openw
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+ int ret;
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+ ret = misc_register(&wdt_miscdev);
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+ if (ret) {
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+ printk(KERN_ERR "wdt: cannot register miscdev on minor=%d (err=%d)\n",
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+ printk(KERN_ERR
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+ "wdt: cannot register miscdev on minor=%d (err=%d)\n",
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+ WATCHDOG_MINOR, ret);
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+ misc_deregister(&wdt_miscdev);
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+ goto out;
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