I have done what are already done in: omap_wdt.c with parameter timer_margin softdog.c with parameter softMargin ...
the same feature is missing in davinci_wdt and I think is quite usefull. if you NACK because I don't use watchdog_init_timeout I can rewrite the code but I do that to reduce the number of changes done in one commit Il giorno lun 16 lug 2018 alle ore 15:31 Guenter Roeck <li...@roeck-us.net> ha scritto: > > On 07/16/2018 05:19 AM, michele.dioni...@gmail.com wrote: > > From: Michele Dionisio <michele.dioni...@powersoft.com> > > > > It is not possible to implement setting of watchdog period because it is > > not possible to stop watchdog so it is nice to have possibility to > > configure watchdog period at module loading. > > > > Signed-off-by: Michele Dionisio <michele.dioni...@gmail.com> > > > > diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c > > index 6c6594261cb7..5f95afa20fee 100644 > > --- a/drivers/watchdog/davinci_wdt.c > > +++ b/drivers/watchdog/davinci_wdt.c > > @@ -54,6 +54,10 @@ > > #define WDKEY_SEQ0 (0xa5c6 << 16) > > #define WDKEY_SEQ1 (0xda7e << 16) > > > > +static unsigned int init_timeout; > > +module_param(init_timeout, uint, 0); > > +MODULE_PARM_DESC(init_timeout, "initial watchdog timeout (in seconds)"); > > + > > static int heartbeat; > > > > /* > > @@ -223,8 +227,10 @@ static int davinci_wdt_probe(struct platform_device > > *pdev) > > wdd->ops = &davinci_wdt_ops; > > wdd->min_timeout = 1; > > wdd->max_timeout = MAX_HEARTBEAT; > > - wdd->timeout = DEFAULT_HEARTBEAT; > > - wdd->parent = &pdev->dev; > > + if ((init_timeout >= 1) && (init_timeout <= MAX_HEARTBEAT)) > > + wdd->timeout = init_timeout; > > + else > > + wdd->timeout = DEFAULT_HEARTBEAT; > > > > watchdog_init_timeout(wdd, heartbeat, dev); > > > > NACK. This is done with the 'heartbeat' module parameter already. > > Guenter > >
