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Subject[PATCH] sc1200wdt PnP Update (4/6)
This patch converts this watchdog driver.  Only tested for compilation.

-Adam


--- a/drivers/char/watchdog/sc1200wdt.c Thu Jan 16 21:53:51 2003
+++ b/drivers/char/watchdog/sc1200wdt.c Thu Jan 16 21:55:45 2003
@@ -23,6 +23,7 @@
* Add WDIOC_GETBOOTSTATUS and WDIOC_SETOPTIONS ioctls
* Fix CONFIG_WATCHDOG_NOWAYOUT
* 20020530 Joel Becker Add Matt Domsch's nowayout module option
+ * 20030116 Adam Belay Updated to the latest pnp code
*
*/

@@ -35,7 +36,7 @@
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
-#include <linux/isapnp.h>
+#include <linux/pnp.h>
#include <linux/pci.h>

#include <asm/semaphore.h>
@@ -75,9 +76,9 @@
static char expect_close;
spinlock_t sc1200wdt_lock; /* io port access serialisation */

-#if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
+#if defined CONFIG_PNP
static int isapnp = 1;
-static struct pci_dev *wdt_dev;
+static struct pnp_dev *wdt_dev;

MODULE_PARM(isapnp, "i");
MODULE_PARM_DESC(isapnp, "When set to 0 driver ISA PnP support will be disabled");
@@ -328,40 +329,49 @@
}


-#if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
+#if defined CONFIG_PNP

-static int __init sc1200wdt_isapnp_probe(void)
+struct pnp_device_id scl200wdt_pnp_devices[] = {
+ /* National Semiconductor PC87307/PC97307 watchdog component */
+ {.id = "NSC0800", .driver_data = 0},
+ {.id = ""}
+};
+
+static int scl200wdt_pnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
{
- int ret;
+ /* this driver only supports one card at a time */
+ if (wdt_dev || !isapnp)
+ return -EBUSY;

- /* The WDT is logical device 8 on the main device */
- wdt_dev = isapnp_find_dev(NULL, ISAPNP_VENDOR('N','S','C'), ISAPNP_FUNCTION(0x08), NULL);
- if (!wdt_dev)
- return -ENODEV;
-
- if (wdt_dev->prepare(wdt_dev) < 0) {
- printk(KERN_ERR PFX "ISA PnP found device that could not be autoconfigured\n");
- return -EAGAIN;
- }
+ wdt_dev = dev;
+ io = pnp_port_start(wdt_dev, 0);
+ io_len = pnp_port_len(wdt_dev, 0);

- if (!(pci_resource_flags(wdt_dev, 0) & IORESOURCE_IO)) {
- printk(KERN_ERR PFX "ISA PnP could not find io ports\n");
- return -ENODEV;
+ if (!request_region(io, io_len, SC1200_MODULE_NAME)) {
+ printk(KERN_ERR PFX "Unable to register IO port %#x\n", io);
+ return -EBUSY;
}

- ret = wdt_dev->activate(wdt_dev);
- if (ret && (ret != -EBUSY))
- return -ENOMEM;
-
- /* io port resource overriding support? */
- io = pci_resource_start(wdt_dev, 0);
- io_len = pci_resource_len(wdt_dev, 0);
-
- printk(KERN_DEBUG PFX "ISA PnP found device at io port %#x/%d\n", io, io_len);
+ printk(KERN_INFO "scl200wdt: PnP device found at io port %#x/%d\n", io, io_len);
return 0;
}

-#endif /* CONFIG_ISAPNP */
+static void scl200wdt_pnp_remove(struct pnp_dev * dev)
+{
+ if (wdt_dev){
+ release_region(io, io_len);
+ wdt_dev = NULL;
+ }
+}
+
+static struct pnp_driver scl200wdt_pnp_driver = {
+ .name = "scl200wdt",
+ .id_table = scl200wdt_pnp_devices,
+ .probe = scl200wdt_pnp_probe,
+ .remove = scl200wdt_pnp_remove,
+};
+
+#endif /* CONFIG_PNP */


static int __init sc1200wdt_init(void)
@@ -373,9 +383,9 @@
spin_lock_init(&sc1200wdt_lock);
sema_init(&open_sem, 1);

-#if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
+#if defined CONFIG_PNP
if (isapnp) {
- ret = sc1200wdt_isapnp_probe();
+ ret = pnp_register_driver(&scl200wdt_pnp_driver);
if (ret)
goto out_clean;
}
@@ -387,12 +397,17 @@
goto out_clean;
}

+ /* now that the user has specified an IO port and we haven't detected
+ * any devices, disable pnp support */
+ isapnp = 0;
+ pnp_unregister_driver(&scl200wdt_pnp_driver);
+
if (!request_region(io, io_len, SC1200_MODULE_NAME)) {
printk(KERN_ERR PFX "Unable to register IO port %#x\n", io);
ret = -EBUSY;
- goto out_pnp;
+ goto out_clean;
}
-
+
ret = sc1200wdt_probe();
if (ret)
goto out_io;
@@ -420,11 +435,6 @@
out_io:
release_region(io, io_len);

-out_pnp:
-#if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
- if (isapnp && wdt_dev)
- wdt_dev->deactivate(wdt_dev);
-#endif
goto out_clean;
}

@@ -434,11 +444,11 @@
misc_deregister(&sc1200wdt_miscdev);
unregister_reboot_notifier(&sc1200wdt_notifier);

-#if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
- if(isapnp && wdt_dev)
- wdt_dev->deactivate(wdt_dev);
+#if defined CONFIG_PNP
+ if(isapnp)
+ pnp_unregister_driver(&scl200wdt_pnp_driver);
+ else
#endif
-
release_region(io, io_len);
}

@@ -455,7 +465,7 @@
if (ints[0] > 1)
timeout = ints[2];

-#if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
+#if defined CONFIG_PNP
if (ints[0] > 2)
isapnp = ints[3];
#endif
-
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