misc: tegra-throughput: fix fps reading
[linux-2.6.git] / drivers / watchdog / at91rm9200_wdt.c
index bb79f64..7ef99a1 100644 (file)
@@ -9,10 +9,13 @@
  * 2 of the License, or (at your option) any later version.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/bitops.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
 #include <linux/init.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/miscdevice.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/watchdog.h>
 #include <linux/uaccess.h>
-#include <asm/arch/at91_st.h>
-
+#include <mach/at91_st.h>
 
 #define WDT_DEFAULT_TIME       5       /* seconds */
 #define WDT_MAX_TIME           256     /* seconds */
 
 static int wdt_time = WDT_DEFAULT_TIME;
-static int nowayout = WATCHDOG_NOWAYOUT;
+static bool nowayout = WATCHDOG_NOWAYOUT;
 
 module_param(wdt_time, int, 0);
 MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="
                                __MODULE_STRING(WDT_DEFAULT_TIME) ")");
 
 #ifdef CONFIG_WATCHDOG_NOWAYOUT
-module_param(nowayout, int, 0);
+module_param(nowayout, bool, 0);
 MODULE_PARM_DESC(nowayout,
                "Watchdog cannot be stopped once started (default="
                                __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
@@ -51,7 +53,7 @@ static unsigned long at91wdt_busy;
  */
 static inline void at91_wdt_stop(void)
 {
-       at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN);
+       at91_st_write(AT91_ST_WDMR, AT91_ST_EXTEN);
 }
 
 /*
@@ -59,9 +61,9 @@ static inline void at91_wdt_stop(void)
  */
 static inline void at91_wdt_start(void)
 {
-       at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN |
+       at91_st_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN |
                                (((65536 * wdt_time) >> 8) & AT91_ST_WDV));
-       at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
+       at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
 }
 
 /*
@@ -69,7 +71,7 @@ static inline void at91_wdt_start(void)
  */
 static inline void at91_wdt_reload(void)
 {
-       at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
+       at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
 }
 
 /* ......................................................................... */
@@ -107,10 +109,10 @@ static int at91_wdt_close(struct inode *inode, struct file *file)
 static int at91_wdt_settimeout(int new_time)
 {
        /*
-        * All counting occurs at SLOW_CLOCK / 128 = 0.256 Hz
+        * All counting occurs at SLOW_CLOCK / 128 = 256 Hz
         *
         * Since WDV is a 16-bit counter, the maximum period is
-        * 65536 / 0.256 = 256 seconds.
+        * 65536 / 256 = 256 seconds.
         */
        if ((new_time <= 0) || (new_time > WDT_MAX_TIME))
                return -EINVAL;
@@ -121,7 +123,7 @@ static int at91_wdt_settimeout(int new_time)
        return 0;
 }
 
-static struct watchdog_info at91_wdt_info = {
+static const struct watchdog_info at91_wdt_info = {
        .identity       = "at91 watchdog",
        .options        = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
 };
@@ -129,7 +131,7 @@ static struct watchdog_info at91_wdt_info = {
 /*
  * Handle commands from user-space.
  */
-static long at91_wdt_ioct(struct file *file,
+static long at91_wdt_ioctl(struct file *file,
                                        unsigned int cmd, unsigned long arg)
 {
        void __user *argp = (void __user *)arg;
@@ -137,23 +139,9 @@ static long at91_wdt_ioct(struct file *file,
        int new_value;
 
        switch (cmd) {
-       case WDIOC_KEEPALIVE:
-               at91_wdt_reload();      /* pat the watchdog */
-               return 0;
        case WDIOC_GETSUPPORT:
                return copy_to_user(argp, &at91_wdt_info,
                                sizeof(at91_wdt_info)) ? -EFAULT : 0;
-       case WDIOC_SETTIMEOUT:
-               if (get_user(new_value, p))
-                       return -EFAULT;
-               if (at91_wdt_settimeout(new_value))
-                       return -EINVAL;
-               /* Enable new time value */
-               at91_wdt_start();
-               /* Return current value */
-               return put_user(wdt_time, p);
-       case WDIOC_GETTIMEOUT:
-               return put_user(wdt_time, p);
        case WDIOC_GETSTATUS:
        case WDIOC_GETBOOTSTATUS:
                return put_user(0, p);
@@ -165,6 +153,20 @@ static long at91_wdt_ioct(struct file *file,
                if (new_value & WDIOS_ENABLECARD)
                        at91_wdt_start();
                return 0;
+       case WDIOC_KEEPALIVE:
+               at91_wdt_reload();      /* pat the watchdog */
+               return 0;
+       case WDIOC_SETTIMEOUT:
+               if (get_user(new_value, p))
+                       return -EFAULT;
+               if (at91_wdt_settimeout(new_value))
+                       return -EINVAL;
+               /* Enable new time value */
+               at91_wdt_start();
+               /* Return current value */
+               return put_user(wdt_time, p);
+       case WDIOC_GETTIMEOUT:
+               return put_user(wdt_time, p);
        default:
                return -ENOTTY;
        }
@@ -197,7 +199,7 @@ static struct miscdevice at91wdt_miscdev = {
        .fops           = &at91wdt_fops,
 };
 
-static int __init at91wdt_probe(struct platform_device *pdev)
+static int __devinit at91wdt_probe(struct platform_device *pdev)
 {
        int res;
 
@@ -209,12 +211,12 @@ static int __init at91wdt_probe(struct platform_device *pdev)
        if (res)
                return res;
 
-       printk(KERN_INFO "AT91 Watchdog Timer enabled (%d seconds%s)\n",
-                               wdt_time, nowayout ? ", nowayout" : "");
+       pr_info("AT91 Watchdog Timer enabled (%d seconds%s)\n",
+               wdt_time, nowayout ? ", nowayout" : "");
        return 0;
 }
 
-static int __exit at91wdt_remove(struct platform_device *pdev)
+static int __devexit at91wdt_remove(struct platform_device *pdev)
 {
        int res;
 
@@ -242,7 +244,7 @@ static int at91wdt_resume(struct platform_device *pdev)
 {
        if (at91wdt_busy)
                at91_wdt_start();
-               return 0;
+       return 0;
 }
 
 #else
@@ -252,7 +254,7 @@ static int at91wdt_resume(struct platform_device *pdev)
 
 static struct platform_driver at91wdt_driver = {
        .probe          = at91wdt_probe,
-       .remove         = __exit_p(at91wdt_remove),
+       .remove         = __devexit_p(at91wdt_remove),
        .shutdown       = at91wdt_shutdown,
        .suspend        = at91wdt_suspend,
        .resume         = at91wdt_resume,
@@ -268,7 +270,8 @@ static int __init at91_wdt_init(void)
           if not reset to the default */
        if (at91_wdt_settimeout(wdt_time)) {
                at91_wdt_settimeout(WDT_DEFAULT_TIME);
-               pr_info("at91_wdt: wdt_time value must be 1 <= wdt_time <= 256, using %d\n", wdt_time);
+               pr_info("wdt_time value must be 1 <= wdt_time <= 256, using %d\n",
+                       wdt_time);
        }
 
        return platform_driver_register(&at91wdt_driver);