| Message ID | 20230330112051.551648-3-keguang.zhang@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | Move Loongson1 restart handler to watchdog driver | expand |
On Thu, Mar 30, 2023 at 07:20:51PM +0800, Keguang Zhang wrote: > 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> > --- > V1 -> V2: None > --- > drivers/watchdog/loongson1_wdt.c | 19 ++++++++++++++++++- > 1 file changed, 18 insertions(+), 1 deletion(-) > > diff --git a/drivers/watchdog/loongson1_wdt.c b/drivers/watchdog/loongson1_wdt.c > index bb3d075c0633..a0b6fe62e516 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 void ls1x_clk_disable_unprepare(void *data)
diff --git a/drivers/watchdog/loongson1_wdt.c b/drivers/watchdog/loongson1_wdt.c index bb3d075c0633..a0b6fe62e516 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 void ls1x_clk_disable_unprepare(void *data)
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> --- V1 -> V2: None --- drivers/watchdog/loongson1_wdt.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)