This function looks up a PM domain form the provider. This will be useful to add parent/child domain relationship from the SoC specific code. The caller of the function must make sure that PM domain provider is already registered. Signed-off-by: Amit Daniel Kachhap <amit.daniel@xxxxxxxxxxx> --- This patch may solve the same purpose which is done by earlier posts 1) https://lkml.org/lkml/2014/11/24/319 - In this there were comments for not using the PM domain name. 2) Ulf Hansson posted a patch http://www.spinics.net/lists/linux-samsung-soc/msg39745.html which also solves similar purpose but I feel this is slightly complex and involves changing the genpd structure. drivers/base/power/domain.c | 3 ++- include/linux/pm_domain.h | 8 ++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index d822753..5d7a2c1 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2129,7 +2129,7 @@ EXPORT_SYMBOL_GPL(of_genpd_del_provider); * Returns a valid pointer to struct generic_pm_domain on success or ERR_PTR() * on failure. */ -static struct generic_pm_domain *of_genpd_get_from_provider( +struct generic_pm_domain *of_genpd_get_from_provider( struct of_phandle_args *genpdspec) { struct generic_pm_domain *genpd = ERR_PTR(-ENOENT); @@ -2149,6 +2149,7 @@ static struct generic_pm_domain *of_genpd_get_from_provider( return genpd; } +EXPORT_SYMBOL_GPL(of_genpd_get_from_provider); /** * genpd_dev_pm_detach - Detach a device from its PM domain. diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 9690827..4954e24 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -282,6 +282,8 @@ typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args, int __of_genpd_add_provider(struct device_node *np, genpd_xlate_t xlate, void *data); void of_genpd_del_provider(struct device_node *np); +struct generic_pm_domain *of_genpd_get_from_provider( + struct of_phandle_args *genpdspec); struct generic_pm_domain *__of_genpd_xlate_simple( struct of_phandle_args *genpdspec, @@ -299,6 +301,12 @@ static inline int __of_genpd_add_provider(struct device_node *np, } static inline void of_genpd_del_provider(struct device_node *np) {} +static inline struct generic_pm_domain *of_genpd_get_from_provider( + struct of_phandle_args *genpdspec) +{ + return NULL; +} + #define __of_genpd_xlate_simple NULL #define __of_genpd_xlate_onecell NULL -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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