linux-kernel - [PATCH RFC v2 07/12] PM / Domains: export pm_genpd_lookup

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Message-id: <1416834256-11225-7-git-send-email-amit.daniel@samsung.com>
Date:	Mon, 24 Nov 2014 18:34:11 +0530
From:	Amit Daniel Kachhap <amit.daniel@...sung.com>
To:	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org
Cc:	kgene.kim@...sung.com, linux-kernel@...r.kernel.org,
	s.nawrocki@...sung.com, pankaj.dubey@...sung.com,
	ulf.hansson@...aro.org, khilman@...nel.org,
	linux-pm@...r.kernel.org, geert@...ux-m68k.org, rjw@...ysocki.net,
	devicetree@...r.kernel.org,
	Amit Daniel Kachhap <amit.daniel@...sung.com>
Subject: [PATCH RFC v2 07/12] PM / Domains: export pm_genpd_lookup_name

This API may be needed to set the power domain parent/child relationship
in the power domain platform driver. The parent relationship is
generally set after the child power domain is registered with the power
domain subsystem. In this case, pm_genpd_lookup_name API might be
useful.

Signed-off-by: Amit Daniel Kachhap <amit.daniel@...sung.com>
---
 drivers/base/power/domain.c |    3 ++-
 include/linux/pm_domain.h   |    7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index fb83d4a..b0e1c2f 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -49,7 +49,7 @@
 static LIST_HEAD(gpd_list);
 static DEFINE_MUTEX(gpd_list_lock);
 
-static struct generic_pm_domain *pm_genpd_lookup_name(const char *domain_name)
+struct generic_pm_domain *pm_genpd_lookup_name(const char *domain_name)
 {
 	struct generic_pm_domain *genpd = NULL, *gpd;
 
@@ -66,6 +66,7 @@ static struct generic_pm_domain *pm_genpd_lookup_name(const char *domain_name)
 	mutex_unlock(&gpd_list_lock);
 	return genpd;
 }
+EXPORT_SYMBOL_GPL(pm_genpd_lookup_name);
 
 struct generic_pm_domain *dev_to_genpd(struct device *dev)
 {
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 2e0e06d..aedcec3 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -150,6 +150,8 @@ extern int pm_genpd_name_poweron(const char *domain_name);
 
 extern struct dev_power_governor simple_qos_governor;
 extern struct dev_power_governor pm_domain_always_on_gov;
+
+extern struct generic_pm_domain *pm_genpd_lookup_name(const char *domain_name);
 #else
 
 static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
@@ -221,6 +223,11 @@ static inline int pm_genpd_name_poweron(const char *domain_name)
 {
 	return -ENOSYS;
 }
+static inline
+struct generic_pm_domain *pm_genpd_lookup_name(const char *domain_name)
+{
+	return NULL;
+}
 #define simple_qos_governor NULL
 #define pm_domain_always_on_gov NULL
 #endif
-- 
1.7.9.5

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