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authorWim Van Sebroeck <wim@iguana.be>2007-01-10 23:36:13 +0100
committerWim Van Sebroeck <wim@iguana.be>2007-01-10 23:36:13 +0100
commitad5fe323182fd3adab4225c93eae36f3c555a884 (patch)
tree6b315f85dc2a26a49f7dcbfd3212c3d6d9fcac34 /drivers/char/watchdog/acquirewdt.c
parent76c11f0442257099cbb474301f2ffff38649d3d3 (diff)
[WATCHDOG] acquirewdt.c - convert to platform_device
Convert the acquirewdt watchdog into a platform_device Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/char/watchdog/acquirewdt.c')
-rw-r--r--drivers/char/watchdog/acquirewdt.c49
1 files changed, 45 insertions, 4 deletions
diff --git a/drivers/char/watchdog/acquirewdt.c b/drivers/char/watchdog/acquirewdt.c
index a968f84c353..687b809d49c 100644
--- 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);