diff options
Diffstat (limited to 'drivers/watchdog/i6300esb.c')
| -rw-r--r-- | drivers/watchdog/i6300esb.c | 90 |
1 files changed, 57 insertions, 33 deletions
diff --git a/drivers/watchdog/i6300esb.c b/drivers/watchdog/i6300esb.c index 97ac6bf4222..fbe85285324 100644 --- a/drivers/watchdog/i6300esb.c +++ b/drivers/watchdog/i6300esb.c @@ -13,7 +13,7 @@ * * The timer is implemented in the following I/O controller hubs: * (See the intel documentation on http://developer.intel.com.) - * 6300ESB chip : document number 300641-003 + * 6300ESB chip : document number 300641-004 * * 2004YYZZ Ross Biro * Initial version 0.01 @@ -34,7 +34,7 @@ #include <linux/mm.h> #include <linux/miscdevice.h> #include <linux/watchdog.h> -#include <linux/reboot.h> +#include <linux/platform_device.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/ioport.h> @@ -42,7 +42,7 @@ #include <linux/io.h> /* Module and version information */ -#define ESB_VERSION "0.03" +#define ESB_VERSION "0.04" #define ESB_MODULE_NAME "i6300ESB timer" #define ESB_DRIVER_NAME ESB_MODULE_NAME ", v" ESB_VERSION #define PFX ESB_MODULE_NAME ": " @@ -81,6 +81,8 @@ static unsigned long timer_alive; static struct pci_dev *esb_pci; static unsigned short triggered; /* The status of the watchdog upon boot */ static char esb_expect_close; +static struct platform_device *esb_platform_device; + /* module parameters */ /* 30 sec default heartbeat (1 < heartbeat < 2*1023) */ @@ -320,19 +322,6 @@ static long esb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) } /* - * Notify system - */ - -static int esb_notify_sys(struct notifier_block *this, - unsigned long code, void *unused) -{ - if (code == SYS_DOWN || code == SYS_HALT) - esb_timer_stop(); /* Turn the WDT off */ - - return NOTIFY_DONE; -} - -/* * Kernel Interfaces */ @@ -351,10 +340,6 @@ static struct miscdevice esb_miscdev = { .fops = &esb_fops, }; -static struct notifier_block esb_notifier = { - .notifier_call = esb_notify_sys, -}; - /* * Data for PCI driver interface * @@ -373,7 +358,7 @@ MODULE_DEVICE_TABLE(pci, esb_pci_tbl); * Init & exit routines */ -static unsigned char __init esb_getdevice(void) +static unsigned char __devinit esb_getdevice(void) { u8 val1; unsigned short val2; @@ -444,7 +429,7 @@ err_devput: return 0; } -static int __init watchdog_init(void) +static int __devinit esb_probe(struct platform_device *dev) { int ret; @@ -460,19 +445,13 @@ static int __init watchdog_init(void) "heartbeat value must be 1<heartbeat<2046, using %d\n", heartbeat); } - ret = register_reboot_notifier(&esb_notifier); - if (ret != 0) { - printk(KERN_ERR PFX - "cannot register reboot notifier (err=%d)\n", ret); - goto err_unmap; - } ret = misc_register(&esb_miscdev); if (ret != 0) { printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n", WATCHDOG_MINOR, ret); - goto err_notifier; + goto err_unmap; } esb_timer_stop(); printk(KERN_INFO PFX @@ -480,8 +459,6 @@ static int __init watchdog_init(void) BASEADDR, heartbeat, nowayout); return 0; -err_notifier: - unregister_reboot_notifier(&esb_notifier); err_unmap: iounmap(BASEADDR); /* err_release: */ @@ -493,7 +470,7 @@ err_unmap: return ret; } -static void __exit watchdog_cleanup(void) +static int __devexit esb_remove(struct platform_device *dev) { /* Stop the timer before we leave */ if (!nowayout) @@ -501,11 +478,58 @@ static void __exit watchdog_cleanup(void) /* Deregister */ misc_deregister(&esb_miscdev); - unregister_reboot_notifier(&esb_notifier); iounmap(BASEADDR); pci_release_region(esb_pci, 0); pci_disable_device(esb_pci); pci_dev_put(esb_pci); + return 0; +} + +static void esb_shutdown(struct platform_device *dev) +{ + esb_timer_stop(); +} + +static struct platform_driver esb_platform_driver = { + .probe = esb_probe, + .remove = __devexit_p(esb_remove), + .shutdown = esb_shutdown, + .driver = { + .owner = THIS_MODULE, + .name = ESB_MODULE_NAME, + }, +}; + +static int __init watchdog_init(void) +{ + int err; + + printk(KERN_INFO PFX "Intel 6300ESB WatchDog Timer Driver v%s\n", + ESB_VERSION); + + err = platform_driver_register(&esb_platform_driver); + if (err) + return err; + + esb_platform_device = platform_device_register_simple(ESB_MODULE_NAME, + -1, NULL, 0); + if (IS_ERR(esb_platform_device)) { + err = PTR_ERR(esb_platform_device); + goto unreg_platform_driver; + } + + return 0; + +unreg_platform_driver: + platform_driver_unregister(&esb_platform_driver); + return err; +} + +static void __exit watchdog_cleanup(void) +{ + platform_device_unregister(esb_platform_device); + platform_driver_unregister(&esb_platform_driver); + printk(KERN_INFO PFX "Watchdog Module Unloaded.\n"); } module_init(watchdog_init); |