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| author |   Romain Perier <romain.perier@gmail.com> | 2014-10-14 06:31:09 +0000 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2014-10-22 16:59:36 +0100 |
| commit | a4b4e0461ec5532ad498f0dd0e68993ad79bec2b (patch) | |
| tree | a81a89d427de61cf147b5d7d879bcfbaccbe7e91 /include | |
| parent | Linux 3.18-rc1 (diff) | |
| download | linux-dev-a4b4e0461ec5532ad498f0dd0e68993ad79bec2b.tar.xz linux-dev-a4b4e0461ec5532ad498f0dd0e68993ad79bec2b.zip | |
of: Add standard property for poweroff capability
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>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/of.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index 6545e7aec7bb..27b3ba1e9e59 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -866,4 +866,15 @@ static inline int of_changeset_update_property(struct of_changeset *ocs, /* CONFIG_OF_RESOLVE api */ extern int of_resolve_phandles(struct device_node *tree); +/** + * of_system_has_poweroff_source - Tells if poweroff-source is found for device_node + * @np: Pointer to the given device_node + * + * return true if present false otherwise + */ +static inline bool of_system_has_poweroff_source(const struct device_node *np) +{ + return of_property_read_bool(np, "poweroff-source"); +} + #endif /* _LINUX_OF_H */ |