[WATCHDOG] acquirewdt.c - convert to platform_device

Convert the acquirewdt watchdog into a platform_device

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/char/watchdog/acquirewdt.c b/drivers/char/watchdog/acquirewdt.c
index a968f84c353ef49742a6c68a5c9aafe7a89094fc..687b809d49cb5f1f1d90bee253165a1d122e8aab 100644 (file)
--- a/drivers/char/watchdog/acquirewdt.c
+++ b/drivers/char/watchdog/acquirewdt.c
@@ -64,6 +64,7 @@
 #include <linux/ioport.h>              /* For io-port access */
 #include <linux/notifier.h>            /* For reboot notifier */
 #include <linux/reboot.h>              /* For reboot notifier */
+#include <linux/platform_device.h>     /* For platform_driver framework */
 #include <linux/init.h>                        /* For __init/__exit/... */
 
 #include <asm/uaccess.h>               /* For copy_to_user/put_user/... */
@@ -76,6 +77,7 @@
 #define WATCHDOG_HEARTBEAT 0   /* There is no way to see what the correct time-out period is */
 
 /* internal variables */
+static struct platform_device *acq_platform_device;    /* the watchdog platform device */
 static unsigned long acq_is_open;
 static char expect_close;
 
@@ -265,12 +267,10 @@ static struct notifier_block acq_notifier = {
  *     Init & exit routines
  */
 
-static int __init acq_init(void)
+static int __devinit acq_probe(struct platform_device *dev)
 {
        int ret;
 
-       printk(KERN_INFO "WDT driver for Acquire single board computer initialising.\n");
-
        if (wdt_stop != wdt_start) {
                if (!request_region(wdt_stop, 1, WATCHDOG_NAME)) {
                        printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
@@ -317,13 +317,54 @@ out:
        return ret;
 }
 
-static void __exit acq_exit(void)
+static int __devexit acq_remove(struct platform_device *dev)
 {
        misc_deregister(&acq_miscdev);
        unregister_reboot_notifier(&acq_notifier);
        release_region(wdt_start,1);
        if(wdt_stop != wdt_start)
                release_region(wdt_stop,1);
+
+       return 0;
+}
+
+static struct platform_driver acquirewdt_driver = {
+       .probe          = acq_probe,
+       .remove         = __devexit_p(acq_remove),
+       .driver         = {
+               .owner  = THIS_MODULE,
+               .name   = DRV_NAME,
+       },
+};
+
+static int __init acq_init(void)
+{
+       int err;
+
+       printk(KERN_INFO "WDT driver for Acquire single board computer initialising.\n");
+
+       err = platform_driver_register(&acquirewdt_driver);
+       if (err)
+               return err;
+
+       acq_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+       if (IS_ERR(acq_platform_device)) {
+               err = PTR_ERR(acq_platform_device);
+               goto unreg_platform_driver;
+       }
+
+       return 0;
+
+unreg_platform_driver:
+       platform_driver_unregister(&acquirewdt_driver);
+       return err;
+}
+
+static void __exit acq_exit(void)
+{
+       platform_device_unregister(acq_platform_device);
+       platform_driver_unregister(&acquirewdt_driver);
+       printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
 }
 
 module_init(acq_init);