diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2022-02-07 02:00:28 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2022-03-27 18:04:28 +0300 |
| commit | 1aea522809e67f42295ceb1d21429d76c43697e4 (patch) | |
| tree | 9961da983bbd5e8b449d569885972d9e218361ab /drivers/watchdog | |
| parent | 7a6b3d8a432d18f48f3390de48f4361bc677712e (diff) | |
| download | linux-1aea522809e67f42295ceb1d21429d76c43697e4.tar.xz | |
watchdog: ixp4xx: Implement restart
Implement watchdog restart in the IXP4xx watchdog timer.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220206230028.476659-1-linus.walleij@linaro.org
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/ixp4xx_wdt.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/watchdog/ixp4xx_wdt.c b/drivers/watchdog/ixp4xx_wdt.c index 31b03fa71341..281a48d9889f 100644 --- a/drivers/watchdog/ixp4xx_wdt.c +++ b/drivers/watchdog/ixp4xx_wdt.c @@ -84,10 +84,24 @@ static int ixp4xx_wdt_set_timeout(struct watchdog_device *wdd, return 0; } +static int ixp4xx_wdt_restart(struct watchdog_device *wdd, + unsigned long action, void *data) +{ + struct ixp4xx_wdt *iwdt = to_ixp4xx_wdt(wdd); + + __raw_writel(IXP4XX_WDT_KEY, iwdt->base + IXP4XX_OSWK_OFFSET); + __raw_writel(0, iwdt->base + IXP4XX_OSWT_OFFSET); + __raw_writel(IXP4XX_WDT_COUNT_ENABLE | IXP4XX_WDT_RESET_ENABLE, + iwdt->base + IXP4XX_OSWE_OFFSET); + + return 0; +} + static const struct watchdog_ops ixp4xx_wdt_ops = { .start = ixp4xx_wdt_start, .stop = ixp4xx_wdt_stop, .set_timeout = ixp4xx_wdt_set_timeout, + .restart = ixp4xx_wdt_restart, .owner = THIS_MODULE, }; |