diff options
| author | Keguang Zhang <keguang.zhang@gmail.com> | 2023-03-30 19:20:51 +0800 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2023-04-22 16:05:38 +0200 |
| commit | 2a31bf20808aa3642a942ab9ce421ebb7585eb3a (patch) | |
| tree | 9082040139d8045cd8d057e4ab415aff2b48032c /drivers/watchdog | |
| parent | d0ee0e8aa97e6e1d443eaab8c94d580d0a6f5a89 (diff) | |
watchdog: loongson1_wdt: Implement restart handler
Implement restart handler for the Loongson-1 watchdog driver and
define the watchdog registers instead of including the legacy header.
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230330112051.551648-3-keguang.zhang@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/loongson1_wdt.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/watchdog/loongson1_wdt.c b/drivers/watchdog/loongson1_wdt.c index c55656cfb403..3c651c50a98c 100644 --- a/drivers/watchdog/loongson1_wdt.c +++ b/drivers/watchdog/loongson1_wdt.c @@ -7,7 +7,11 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/watchdog.h> -#include <loongson1.h> + +/* Loongson 1 Watchdog Register Definitions */ +#define WDT_EN 0x0 +#define WDT_TIMER 0x4 +#define WDT_SET 0x8 #define DEFAULT_HEARTBEAT 30 @@ -66,6 +70,18 @@ static int ls1x_wdt_stop(struct watchdog_device *wdt_dev) return 0; } +static int ls1x_wdt_restart(struct watchdog_device *wdt_dev, + unsigned long action, void *data) +{ + struct ls1x_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); + + writel(0x1, drvdata->base + WDT_EN); + writel(0x1, drvdata->base + WDT_TIMER); + writel(0x1, drvdata->base + WDT_SET); + + return 0; +} + static const struct watchdog_info ls1x_wdt_info = { .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, .identity = "Loongson1 Watchdog", @@ -77,6 +93,7 @@ static const struct watchdog_ops ls1x_wdt_ops = { .stop = ls1x_wdt_stop, .ping = ls1x_wdt_ping, .set_timeout = ls1x_wdt_set_timeout, + .restart = ls1x_wdt_restart, }; static int ls1x_wdt_probe(struct platform_device *pdev) |