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[WATCHDOG] acquirewdt.c - convert to platform_device

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Convert the acquirewdt watchdog into a platform_device

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wim Van Sebroeck 2007-01-10 23:36:13 +01:00
parent 76c11f0442
commit ad5fe32318
1 changed files with 45 additions and 4 deletions
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49
drivers/char/watchdog/acquirewdt.c
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@ -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 @@ static int __init acq_init(void)
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);