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[WATCHDOG] advantechwdt.c - convert to platform_device 

Convert the advantechwdt watchdog into a platform_device

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wim Van Sebroeck 2007-01-11 22:35:40 +01:00
parent 0349a363e2
commit c2bd11c7cb
1 changed files with 49 additions and 6 deletions
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55
drivers/char/watchdog/advantechwdt.c
View File

@ -37,6 +37,7 @@
#include <linux/ioport.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <asm/io.h>
@ -48,6 +49,7 @@
#define WATCHDOG_NAME "Advantech WDT"
#define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */
static struct platform_device *advwdt_platform_device; /* the watchdog platform device */
static unsigned long advwdt_is_open;
static char adv_expect_close;
@ -269,13 +271,11 @@ static struct notifier_block advwdt_notifier = {
* Init & exit routines
*/
static int __init
advwdt_init(void)
static int __devinit
advwdt_probe(struct platform_device *dev)
{
int ret;
printk(KERN_INFO "WDT driver for Advantech 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",
@ -328,14 +328,57 @@ unreg_stop:
goto out;
}
static void __exit
advwdt_exit(void)
static int __devexit
advwdt_remove(struct platform_device *dev)
{
misc_deregister(&advwdt_miscdev);
unregister_reboot_notifier(&advwdt_notifier);
release_region(wdt_start,1);
if(wdt_stop != wdt_start)
release_region(wdt_stop,1);
return 0;
}
static struct platform_driver advwdt_driver = {
.probe = advwdt_probe,
.remove = __devexit_p(advwdt_remove),
.driver = {
.owner = THIS_MODULE,
.name = DRV_NAME,
},
};
static int __init
advwdt_init(void)
{
int err;
printk(KERN_INFO "WDT driver for Advantech single board computer initialising.\n");
err = platform_driver_register(&advwdt_driver);
if (err)
return err;
advwdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
if (IS_ERR(advwdt_platform_device)) {
err = PTR_ERR(advwdt_platform_device);
goto unreg_platform_driver;
}
return 0;
unreg_platform_driver:
platform_driver_unregister(&advwdt_driver);
return err;
}
static void __exit
advwdt_exit(void)
{
platform_device_unregister(advwdt_platform_device);
platform_driver_unregister(&advwdt_driver);
printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
}
module_init(advwdt_init);