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Commit 74a2799a authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

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: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent 40114447

drivers/base/power/domain.c

+19 −0
Original line number Diff line number Diff line
@@ -1887,6 +1887,16 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state) 
	goto out;

}



/**

 * 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 @@ int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd) 
	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. */



/**

include/linux/pm_domain.h

+10 −0
Original line number Diff line number Diff line
@@ -156,7 +156,9 @@ extern int pm_genpd_add_callbacks(struct device *dev, 
				  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 @@ static inline int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int s 
{

	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)

{