mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 18:19:02 +00:00
105 lines
2.8 KiB
Diff
105 lines
2.8 KiB
Diff
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diff --git a/drivers/char/watchdog/mtx-1_wdt.c b/drivers/char/watchdog/mtx-1_wdt.c
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index dcfd401..5d8c51f 100644
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--- a/drivers/char/watchdog/mtx-1_wdt.c
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+++ b/drivers/char/watchdog/mtx-1_wdt.c
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@@ -45,10 +45,13 @@
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#include <linux/completion.h>
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#include <linux/jiffies.h>
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#include <linux/watchdog.h>
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+#include <linux/platform_device.h>
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+
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include <asm/mach-au1x00/au1000.h>
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+#include <asm/gpio.h>
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#define MTX1_WDT_INTERVAL (5 * HZ)
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@@ -61,6 +64,7 @@ static struct {
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volatile int queue;
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int default_ticks;
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unsigned long inuse;
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+ unsigned gpio;
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} mtx1_wdt_device;
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static void mtx1_wdt_trigger(unsigned long unused)
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@@ -73,7 +77,7 @@ static void mtx1_wdt_trigger(unsigned long unused)
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* toggle GPIO2_15
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*/
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tmp = au_readl(GPIO2_DIR);
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- tmp = (tmp & ~(1<<15)) | ((~tmp) & (1<<15));
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+ tmp = (tmp & ~(1<< mtx1_wdt_device.gpio)) | ((~tmp) & (1<< mtx1_wdt_device.gpio));
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au_writel (tmp, GPIO2_DIR);
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if (mtx1_wdt_device.queue && ticks)
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@@ -93,7 +97,7 @@ static void mtx1_wdt_start(void)
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{
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if (!mtx1_wdt_device.queue) {
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mtx1_wdt_device.queue = 1;
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- au_writel (au_readl(GPIO2_DIR) | (u32)(1<<15), GPIO2_DIR);
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+ gpio_set_value(mtx1_wdt_device.gpio, 1);
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mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
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}
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mtx1_wdt_device.running++;
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@@ -103,7 +107,7 @@ static int mtx1_wdt_stop(void)
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{
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if (mtx1_wdt_device.queue) {
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mtx1_wdt_device.queue = 0;
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- au_writel (au_readl(GPIO2_DIR) & ~((u32)(1<<15)), GPIO2_DIR);
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+ gpio_set_value(mtx1_wdt_device.gpio, 0);
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}
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ticks = mtx1_wdt_device.default_ticks;
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@@ -197,10 +201,12 @@ static struct miscdevice mtx1_wdt_misc = {
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};
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-static int __init mtx1_wdt_init(void)
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+static int mtx1_wdt_probe(struct platform_device *pdev)
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{
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int ret;
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+ mtx1_wdt_device.gpio = pdev->resource[0].start;
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+
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if ((ret = misc_register(&mtx1_wdt_misc)) < 0) {
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printk(KERN_ERR " mtx-1_wdt : failed to register\n");
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return ret;
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@@ -222,13 +228,30 @@ static int __init mtx1_wdt_init(void)
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return 0;
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}
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-static void __exit mtx1_wdt_exit(void)
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+static int mtx1_wdt_remove(struct platform_device *pdev)
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{
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if (mtx1_wdt_device.queue) {
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mtx1_wdt_device.queue = 0;
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wait_for_completion(&mtx1_wdt_device.stop);
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}
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misc_deregister(&mtx1_wdt_misc);
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+ return 0;
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+}
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+
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+static struct platform_driver mtx1_wdt = {
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+ .probe = mtx1_wdt_probe,
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+ .remove = mtx1_wdt_remove,
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+ .driver.name = "mtx1-wdt",
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+};
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+
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+static int __init mtx1_wdt_init(void)
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+{
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+ return platform_driver_register(&mtx1_wdt);
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+}
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+
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+static void __exit mtx1_wdt_exit(void)
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+{
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+ platform_driver_unregister(&mtx1_wdt);
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}
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module_init(mtx1_wdt_init);
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@@ -237,3 +260,4 @@ module_exit(mtx1_wdt_exit);
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MODULE_AUTHOR("Michael Stickel, Florian Fainelli");
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MODULE_DESCRIPTION("Driver for the MTX-1 watchdog");
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MODULE_LICENSE("GPL");
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+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
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