The watchdog driver is now a platform device driver and reads its gpio line

while registering

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9425 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/au1000/patches/016-watchdog_pdev_gpio.patch b/target/linux/au1000/patches/016-watchdog_pdev_gpio.patch
new file mode 100644 (file)
index 0000000..ea162f1
--- /dev/null
+++ b/target/linux/au1000/patches/016-watchdog_pdev_gpio.patch
@@ -0,0 +1,104 @@
+diff --git a/drivers/char/watchdog/mtx-1_wdt.c b/drivers/char/watchdog/mtx-1_wdt.c
+index dcfd401..5d8c51f 100644
+--- a/drivers/char/watchdog/mtx-1_wdt.c
++++ b/drivers/char/watchdog/mtx-1_wdt.c
+@@ -45,10 +45,13 @@
+ #include <linux/completion.h>
+ #include <linux/jiffies.h>
+ #include <linux/watchdog.h>
++#include <linux/platform_device.h>
++
+ #include <asm/io.h>
+ #include <asm/uaccess.h>
+ 
+ #include <asm/mach-au1x00/au1000.h>
++#include <asm/gpio.h>
+ 
+ #define MTX1_WDT_INTERVAL     (5 * HZ)
+ 
+@@ -61,6 +64,7 @@ static struct {
+       volatile int queue;
+       int default_ticks;
+       unsigned long inuse;
++      unsigned gpio;
+ } mtx1_wdt_device;
+ 
+ static void mtx1_wdt_trigger(unsigned long unused)
+@@ -73,7 +77,7 @@ static void mtx1_wdt_trigger(unsigned long unused)
+        * toggle GPIO2_15
+        */
+       tmp = au_readl(GPIO2_DIR);
+-      tmp = (tmp & ~(1<<15)) | ((~tmp) & (1<<15));
++      tmp = (tmp & ~(1<< mtx1_wdt_device.gpio)) | ((~tmp) & (1<< mtx1_wdt_device.gpio));
+       au_writel (tmp, GPIO2_DIR);
+ 
+       if (mtx1_wdt_device.queue && ticks)
+@@ -93,7 +97,7 @@ static void mtx1_wdt_start(void)
+ {
+       if (!mtx1_wdt_device.queue) {
+               mtx1_wdt_device.queue = 1;
+-              au_writel (au_readl(GPIO2_DIR) | (u32)(1<<15), GPIO2_DIR);
++              gpio_set_value(mtx1_wdt_device.gpio, 1);
+               mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
+       }
+       mtx1_wdt_device.running++;
+@@ -103,7 +107,7 @@ static int mtx1_wdt_stop(void)
+ {
+       if (mtx1_wdt_device.queue) {
+               mtx1_wdt_device.queue = 0;
+-              au_writel (au_readl(GPIO2_DIR) & ~((u32)(1<<15)), GPIO2_DIR);
++              gpio_set_value(mtx1_wdt_device.gpio, 0);
+       }
+ 
+       ticks = mtx1_wdt_device.default_ticks;
+@@ -197,10 +201,12 @@ static struct miscdevice mtx1_wdt_misc = {
+ };
+ 
+ 
+-static int __init mtx1_wdt_init(void)
++static int mtx1_wdt_probe(struct platform_device *pdev)
+ {
+       int ret;
+ 
++      mtx1_wdt_device.gpio = pdev->resource[0].start; 
++
+       if ((ret = misc_register(&mtx1_wdt_misc)) < 0) {
+               printk(KERN_ERR " mtx-1_wdt : failed to register\n");
+               return ret;
+@@ -222,13 +228,30 @@ static int __init mtx1_wdt_init(void)
+       return 0;
+ }
+ 
+-static void __exit mtx1_wdt_exit(void)
++static int mtx1_wdt_remove(struct platform_device *pdev)
+ {
+       if (mtx1_wdt_device.queue) {
+               mtx1_wdt_device.queue = 0;
+               wait_for_completion(&mtx1_wdt_device.stop);
+       }
+       misc_deregister(&mtx1_wdt_misc);
++      return 0;
++}
++
++static struct platform_driver mtx1_wdt = {
++      .probe = mtx1_wdt_probe,
++      .remove = mtx1_wdt_remove,
++      .driver.name = "mtx1-wdt",
++};
++
++static int __init mtx1_wdt_init(void)
++{
++      return platform_driver_register(&mtx1_wdt);
++}
++
++static void __exit mtx1_wdt_exit(void)
++{
++      platform_driver_unregister(&mtx1_wdt);
+ }
+ 
+ module_init(mtx1_wdt_init);
+@@ -237,3 +260,4 @@ module_exit(mtx1_wdt_exit);
+ MODULE_AUTHOR("Michael Stickel, Florian Fainelli");
+ MODULE_DESCRIPTION("Driver for the MTX-1 watchdog");
+ MODULE_LICENSE("GPL");
++MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);