diff options
| author | Jon Hunter <jonathanh@nvidia.com> | 2016-09-12 12:01:05 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-09-13 02:49:32 +0200 |
| commit | ec69572b3f0daf1f26b3e563d56e487d515a3cd1 (patch) | |
| tree | d1b3de58420b6e37d3a59c134d41e6928b0592b0 /include/linux | |
| parent | 8b0510b52478a4ede8a7537da7faa66242bd0ae4 (diff) | |
PM / Domains: Add new helper functions for device-tree
Ideally, if we are returning a reference to a PM domain via a call to
of_genpd_get_from_provider(), then we should keep track of such
references via a reference count. The reference count could then be used
to determine if a PM domain can be safely removed. Alternatively, it is
possible to avoid such external references by providing APIs to access
the PM domain and hence, eliminate any calls to
of_genpd_get_from_provider().
Add new helper functions for adding a device and a subdomain to a PM
domain when using device-tree, so that external calls to
of_genpd_get_from_provider() can be removed.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/pm_domain.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 31fec858088c..e1964a242389 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -208,6 +208,10 @@ struct generic_pm_domain *__of_genpd_xlate_simple( struct generic_pm_domain *__of_genpd_xlate_onecell( struct of_phandle_args *genpdspec, void *data); +extern int of_genpd_add_device(struct of_phandle_args *args, + struct device *dev); +extern int of_genpd_add_subdomain(struct of_phandle_args *parent, + struct of_phandle_args *new_subdomain); int genpd_dev_pm_attach(struct device *dev); #else /* !CONFIG_PM_GENERIC_DOMAINS_OF */ @@ -227,6 +231,18 @@ static inline struct generic_pm_domain *of_genpd_get_from_provider( #define __of_genpd_xlate_simple NULL #define __of_genpd_xlate_onecell NULL +static inline int of_genpd_add_device(struct of_phandle_args *args, + struct device *dev) +{ + return -ENODEV; +} + +static inline int of_genpd_add_subdomain(struct of_phandle_args *parent, + struct of_phandle_args *new_subdomain) +{ + return -ENODEV; +} + static inline int genpd_dev_pm_attach(struct device *dev) { return -ENODEV; |