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PM / Domains: Add power-on function using names to identify domains

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It sometimes is necessary to turn on a given PM domain when only
the name of it is known and the domain pointer is not readily
available.  For this reason, add a new helper function,
pm_genpd_name_poweron(), allowing the caller to turn on a PM domain
using its name for identification.  To avoid code duplication,
move the domain lookup code to a separate function.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Rafael J. Wysocki 2012-08-07 01:11:14 +02:00
parent fb7268be9f
commit 8bc0251de2
2 changed files with 36 additions and 15 deletions
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5
include/linux/pm_domain.h
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@ -161,6 +161,7 @@ extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
extern int pm_genpd_name_poweron(const char *domain_name);
extern bool default_stop_ok(struct device *dev);
@ -240,6 +241,10 @@ static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)
{
return -ENOSYS;
}
static inline int pm_genpd_name_poweron(const char *domain_name)
{
return -ENOSYS;
}
static inline bool default_stop_ok(struct device *dev)
{
return false;