diff options
Diffstat (limited to 'drivers/watchdog/i6300esb.c')
| -rw-r--r-- | drivers/watchdog/i6300esb.c | 93 |
1 files changed, 33 insertions, 60 deletions
diff --git a/drivers/watchdog/i6300esb.c b/drivers/watchdog/i6300esb.c index 3e00dc5b5a20..bb9750a03942 100644 --- a/drivers/watchdog/i6300esb.c +++ b/drivers/watchdog/i6300esb.c @@ -34,7 +34,6 @@ #include <linux/mm.h> #include <linux/miscdevice.h> #include <linux/watchdog.h> -#include <linux/platform_device.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/ioport.h> @@ -42,7 +41,7 @@ #include <linux/io.h> /* Module and version information */ -#define ESB_VERSION "0.04" +#define ESB_VERSION "0.05" #define ESB_MODULE_NAME "i6300ESB timer" #define ESB_DRIVER_NAME ESB_MODULE_NAME ", v" ESB_VERSION #define PFX ESB_MODULE_NAME ": " @@ -82,7 +81,9 @@ 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; + +/* We can only use 1 card due to the /dev/watchdog restriction */ +static int cards_found; /* module parameters */ /* 30 sec default heartbeat (1 < heartbeat < 2*1023) */ @@ -332,11 +333,6 @@ static struct miscdevice esb_miscdev = { /* * Data for PCI driver interface - * - * This data only exists for exporting the supported - * PCI ids via MODULE_DEVICE_TABLE. We do not actually - * register a pci_driver, because someone else might one day - * want to register another driver on the same PCI id. */ static struct pci_device_id esb_pci_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_9), }, @@ -348,29 +344,19 @@ MODULE_DEVICE_TABLE(pci, esb_pci_tbl); * Init & exit routines */ -static unsigned char __devinit esb_getdevice(void) +static unsigned char __devinit esb_getdevice(struct pci_dev *pdev) { - /* - * Find the PCI device - */ - - esb_pci = pci_get_device(PCI_VENDOR_ID_INTEL, - PCI_DEVICE_ID_INTEL_ESB_9, NULL); - - if (!esb_pci) - return 0; - - if (pci_enable_device(esb_pci)) { + if (pci_enable_device(pdev)) { printk(KERN_ERR PFX "failed to enable device\n"); goto err_devput; } - if (pci_request_region(esb_pci, 0, ESB_MODULE_NAME)) { + if (pci_request_region(pdev, 0, ESB_MODULE_NAME)) { printk(KERN_ERR PFX "failed to request region\n"); goto err_disable; } - BASEADDR = pci_ioremap_bar(esb_pci, 0); + BASEADDR = pci_ioremap_bar(pdev, 0); if (BASEADDR == NULL) { /* Something's wrong here, BASEADDR has to be set */ printk(KERN_ERR PFX "failed to get BASEADDR\n"); @@ -378,14 +364,14 @@ static unsigned char __devinit esb_getdevice(void) } /* Done */ + esb_pci = pdev; return 1; err_release: - pci_release_region(esb_pci, 0); + pci_release_region(pdev, 0); err_disable: - pci_disable_device(esb_pci); + pci_disable_device(pdev); err_devput: - pci_dev_put(esb_pci); return 0; } @@ -430,12 +416,23 @@ static void __devinit esb_initdevice(void) esb_timer_set_heartbeat(heartbeat); } -static int __devinit esb_probe(struct platform_device *dev) +static int __devinit esb_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) { int ret; + cards_found++; + if (cards_found == 1) + printk(KERN_INFO PFX "Intel 6300ESB WatchDog Timer Driver v%s\n", + ESB_VERSION); + + if (cards_found > 1) { + printk(KERN_ERR PFX "This driver only supports 1 device\n"); + return -ENODEV; + } + /* Check whether or not the hardware watchdog is there */ - if (!esb_getdevice() || esb_pci == NULL) + if (!esb_getdevice(pdev) || esb_pci == NULL) return -ENODEV; /* Check that the heartbeat value is within it's range; @@ -467,11 +464,11 @@ err_unmap: iounmap(BASEADDR); pci_release_region(esb_pci, 0); pci_disable_device(esb_pci); - pci_dev_put(esb_pci); + esb_pci = NULL; return ret; } -static int __devexit esb_remove(struct platform_device *dev) +static void __devexit esb_remove(struct pci_dev *pdev) { /* Stop the timer before we leave */ if (!nowayout) @@ -482,54 +479,30 @@ static int __devexit esb_remove(struct platform_device *dev) iounmap(BASEADDR); pci_release_region(esb_pci, 0); pci_disable_device(esb_pci); - pci_dev_put(esb_pci); - return 0; + esb_pci = NULL; } -static void esb_shutdown(struct platform_device *dev) +static void esb_shutdown(struct pci_dev *pdev) { esb_timer_stop(); } -static struct platform_driver esb_platform_driver = { +static struct pci_driver esb_driver = { + .name = ESB_MODULE_NAME, + .id_table = esb_pci_tbl, .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; + return pci_register_driver(&esb_driver); } static void __exit watchdog_cleanup(void) { - platform_device_unregister(esb_platform_device); - platform_driver_unregister(&esb_platform_driver); + pci_unregister_driver(&esb_driver); printk(KERN_INFO PFX "Watchdog Module Unloaded.\n"); } |