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| author | Fabio Porcedda <fabio.porcedda@gmail.com> | 2013-01-08 11:04:10 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2013-03-01 12:48:36 +0100 |
| commit | 3048253ed957fc6cdc34599178408559aa1e0062 (patch) | |
| tree | 2e8fd94c3d64899dc4a48912f7ece62721047c68 /include/linux | |
| parent | e3e83d0001a77cdb337be9170e58b55488835ba0 (diff) | |
| download | linux-3048253ed957fc6cdc34599178408559aa1e0062.tar.gz linux-3048253ed957fc6cdc34599178408559aa1e0062.tar.bz2 linux-3048253ed957fc6cdc34599178408559aa1e0062.zip | |
watchdog: core: dt: add support for the timeout-sec dt property
Add support for watchdog drivers to initialize/set the timeout field
of the watchdog_device structure. The timeout field is initialised
either with the module timeout parameter value (if valid) or with the
timeout-sec dt property (if valid). If both are invalid the initial
value is unchanged.
Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/watchdog.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h index 3a9df2f43be6..2a3038ee17a3 100644 --- a/include/linux/watchdog.h +++ b/include/linux/watchdog.h @@ -118,6 +118,13 @@ static inline void watchdog_set_nowayout(struct watchdog_device *wdd, bool noway set_bit(WDOG_NO_WAY_OUT, &wdd->status); } +/* Use the following function to check if a timeout value is invalid */ +static inline bool watchdog_timeout_invalid(struct watchdog_device *wdd, unsigned int t) +{ + return ((wdd->max_timeout != 0) && + (t < wdd->min_timeout || t > wdd->max_timeout)); +} + /* Use the following functions to manipulate watchdog driver specific data */ static inline void watchdog_set_drvdata(struct watchdog_device *wdd, void *data) { @@ -130,6 +137,8 @@ static inline void *watchdog_get_drvdata(struct watchdog_device *wdd) } /* drivers/watchdog/watchdog_core.c */ +extern int watchdog_init_timeout(struct watchdog_device *wdd, + unsigned int timeout_parm, struct device *dev); extern int watchdog_register_device(struct watchdog_device *); extern void watchdog_unregister_device(struct watchdog_device *); |