Messages in this thread Patch in this message | | | From | Romain Perier <> | Subject | [RFC PATCH v2 1/4] regulator: Add helper function to get "poweroff-source" property | Date | Tue, 7 Oct 2014 19:45:01 +0000 |
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Several drivers create their own devicetree property when they register poweroff capabilities. This is for example the case for mfd, regulator or power drivers which define "vendor,system-power-controller" property. This patch adds support for a standard property "poweroff-source" which marks the device as able to shutdown the system.
Signed-off-by: Romain Perier <romain.perier@gmail.com> --- drivers/regulator/of_regulator.c | 12 ++++++++++++ include/linux/regulator/of_regulator.h | 6 ++++++ 2 files changed, 18 insertions(+)
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index 7a51814..8b898e6 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -240,3 +240,15 @@ struct regulator_init_data *regulator_of_get_init_data(struct device *dev, return init_data; } + +/** + * is_system_poweroff_source - Tells if poweroff-source is found for device_node + * @np: Pointer to the given device_node + * + * return true if present false otherwise + */ +bool is_system_poweroff_source(const struct device_node *np) +{ + return of_property_read_bool(np, "poweroff-source"); +} +EXPORT_SYMBOL_GPL(is_system_poweroff_source); diff --git a/include/linux/regulator/of_regulator.h b/include/linux/regulator/of_regulator.h index f921796..9d8fbb2 100644 --- a/include/linux/regulator/of_regulator.h +++ b/include/linux/regulator/of_regulator.h @@ -20,6 +20,7 @@ extern struct regulator_init_data extern int of_regulator_match(struct device *dev, struct device_node *node, struct of_regulator_match *matches, unsigned int num_matches); +extern bool is_system_poweroff_source(const struct device_node *np); #else static inline struct regulator_init_data *of_get_regulator_init_data(struct device *dev, @@ -35,6 +36,11 @@ static inline int of_regulator_match(struct device *dev, { return 0; } + +static inline bool is_system_poweroff_source(const struct device_node *np) +{ + return false; +} #endif /* CONFIG_OF */ #endif /* __LINUX_OF_REG_H */ -- 1.9.1
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