PM / Domains: Operations related to cpuidle using domain names
Make it possible to use domain names in operations connecting cpuidle
to and disconnecting it from a PM domain. This is useful on
platforms where PM domain objects are organized in such a way that
the names of the domains are easier to use than the addresses of
those objects.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index e44e1a8..12ad070 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1888,6 +1888,16 @@
}
/**
+ * pm_genpd_name_attach_cpuidle - Find PM domain and connect cpuidle to it.
+ * @name: Name of the domain to connect to cpuidle.
+ * @state: cpuidle state this domain can manipulate.
+ */
+int pm_genpd_name_attach_cpuidle(const char *name, int state)
+{
+ return pm_genpd_attach_cpuidle(pm_genpd_lookup_name(name), state);
+}
+
+/**
* pm_genpd_detach_cpuidle - Remove the cpuidle connection from a PM domain.
* @genpd: PM domain to remove the cpuidle connection from.
*
@@ -1925,6 +1935,15 @@
return ret;
}
+/**
+ * pm_genpd_name_detach_cpuidle - Find PM domain and disconnect cpuidle from it.
+ * @name: Name of the domain to disconnect cpuidle from.
+ */
+int pm_genpd_name_detach_cpuidle(const char *name)
+{
+ return pm_genpd_detach_cpuidle(pm_genpd_lookup_name(name));
+}
+
/* Default device callbacks for generic PM domains. */
/**
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index f2a633a..7c1d252 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -156,7 +156,9 @@
struct gpd_timing_data *td);
extern int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td);
extern int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state);
+extern int pm_genpd_name_attach_cpuidle(const char *name, int state);
extern int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd);
+extern int pm_genpd_name_detach_cpuidle(const char *name);
extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
@@ -229,10 +231,18 @@
{
return -ENOSYS;
}
+static inline int pm_genpd_name_attach_cpuidle(const char *name, int state)
+{
+ return -ENOSYS;
+}
static inline int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
{
return -ENOSYS;
}
+static inline int pm_genpd_name_detach_cpuidle(const char *name)
+{
+ return -ENOSYS;
+}
static inline void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off)
{