[RFC PATCH 1/2] watchdog: booke: Convert to platform driver

From: Guenter Roeck
Date: Fri May 03 2013 - 11:57:09 EST


Required to be able to add device tree support

Cc: Dirk Eibach <dirk.eibach@xxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
Compile tested only. I'll test it on a real system over the weekend
or early next week.

drivers/watchdog/booke_wdt.c | 28 +++++++++++++++++++++++-----
1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c
index a8dbceb3..9b066b9 100644
--- a/drivers/watchdog/booke_wdt.c
+++ b/drivers/watchdog/booke_wdt.c
@@ -17,6 +17,7 @@
#include <linux/module.h>
#include <linux/smp.h>
#include <linux/watchdog.h>
+#include <linux/platform_device.h>

#include <asm/reg_booke.h>
#include <asm/time.h>
@@ -218,17 +219,24 @@ static struct watchdog_device booke_wdt_dev = {
.max_timeout = 0xFFFF
};

-static void __exit booke_wdt_exit(void)
+static int booke_wdt_remove(struct platform_device *pdev)
{
watchdog_unregister_device(&booke_wdt_dev);
+ return 0;
+}
+
+static void booke_wdt_shutdown(struct platform_device *pdev)
+{
+ booke_wdt_stop(&booke_wdt_dev);
}

-static int __init booke_wdt_init(void)
+static int booke_wdt_probe(struct platform_device *pdev)
{
int ret = 0;
bool nowayout = WATCHDOG_NOWAYOUT;

- pr_info("powerpc book-e watchdog driver loaded\n");
+ dev_info(&pdev->dev, "powerpc book-e watchdog driver loaded\n");
+
booke_wdt_info.firmware_version = cur_cpu_spec->pvr_value;
booke_wdt_set_timeout(&booke_wdt_dev,
period_to_sec(CONFIG_BOOKE_WDT_DEFAULT_TIMEOUT));
@@ -241,8 +249,18 @@ static int __init booke_wdt_init(void)
return ret;
}

-module_init(booke_wdt_init);
-module_exit(booke_wdt_exit);
+static struct platform_driver booke_wdt_driver = {
+ .probe = booke_wdt_probe,
+ .remove = booke_wdt_remove,
+ .shutdown = booke_wdt_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "booke_wdt",
+ },
+};
+
+module_platform_driver(booke_wdt_driver);

MODULE_DESCRIPTION("PowerPC Book-E watchdog driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:booke_wdt");
--
1.7.9.7

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