On Mon, Oct 16, 2017 at 10:54:27PM +0200, Linus Walleij wrote:
> This enables the Faraday FTWDT010 to restart the system,
> if need be. Set the restart priority for the watchdog to
> 128.
>
> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> ChangeLog v1->v2:
> - Rebased, no changes.
> ---
> drivers/watchdog/ftwdt010_wdt.c | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/drivers/watchdog/ftwdt010_wdt.c b/drivers/watchdog/ftwdt010_wdt.c
> index 21c3ac7f557a..0be7c2db642d 100644
> --- a/drivers/watchdog/ftwdt010_wdt.c
> +++ b/drivers/watchdog/ftwdt010_wdt.c
> @@ -56,6 +56,22 @@ struct ftwdt010_wdt *to_ftwdt010_wdt(struct watchdog_device *wdd)
> return container_of(wdd, struct ftwdt010_wdt, wdd);
> }
>
> +static int ftwdt010_wdt_restart(struct watchdog_device *wdd,
> + unsigned long action, void *data)
> +{
> + struct ftwdt010_wdt *gwdt = to_ftwdt010_wdt(wdd);
> + u32 enable;
> +
> + writel(1, gwdt->base + FTWDT010_WDLOAD);
> + writel(WDRESTART_MAGIC, gwdt->base + FTWDT010_WDRESTART);
> + enable = WDCR_SYS_RST | WDCR_ENABLE;
> + if (gwdt->use_extclk)
> + enable |= WDCR_EXTCLK;
> + writel(enable, gwdt->base + FTWDT010_WDCR);
> +
> + return 0;
> +}
> +
> static int ftwdt010_wdt_start(struct watchdog_device *wdd)
> {
> struct ftwdt010_wdt *gwdt = to_ftwdt010_wdt(wdd);
> @@ -118,6 +134,7 @@ static const struct watchdog_ops ftwdt010_wdt_ops = {
> .stop = ftwdt010_wdt_stop,
> .ping = ftwdt010_wdt_ping,
> .set_timeout = ftwdt010_wdt_set_timeout,
> + .restart = ftwdt010_wdt_restart,
> .owner = THIS_MODULE,
> };
>
> @@ -190,6 +207,7 @@ static int ftwdt010_wdt_probe(struct platform_device *pdev)
> */
> gwdt->wdd.timeout = 13U;
> watchdog_init_timeout(&gwdt->wdd, 0, dev);
> + watchdog_set_restart_priority(&gwdt->wdd, 128);
>
> reg = readw(gwdt->base + FTWDT010_WDCR);
> if (reg & WDCR_ENABLE) {
--
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