From: Eric Anholt <eric@anholt.net>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-arm-kernel@lists.infradead.org,
linux-rpi-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Stephen Warren <swarren@wwwdotorg.org>,
Lee Jones <lee@kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Kevin Hilman <khilman@kernel.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alexander Aring <alex.aring@gmail.com>,
devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
Eric Anholt <eric@anholt.net>
Subject: [PATCH v2 1/5] power: domain: add pm_genpd_exit
Date: Fri, 4 Dec 2015 09:45:44 -0800 [thread overview]
Message-ID: <1449251148-19344-2-git-send-email-eric@anholt.net> (raw)
In-Reply-To: <1449251148-19344-1-git-send-email-eric@anholt.net>
From: Alexander Aring <alex.aring@gmail.com>
This patch adds function pm_genpd_exit for undo a pm_genpd_init. This
is useful for multiple power domains while probing. If the probing fails
after one pm_genpd_init was called we need to undo all previous
registrations of generic pm domains inside the gpd_list list.
There is a check on IS_ERR_OR_NULL(genpd) which is useful to check again
registered power domains and not registered domains, the driver can use
this mechanism to have an array with registered and non-registered power
domains, where non-registered power domains are NULL.
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/base/power/domain.c | 22 ++++++++++++++++++++++
include/linux/pm_domain.h | 4 ++++
2 files changed, 26 insertions(+)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 167418e..e7aca27 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1509,6 +1509,28 @@ void pm_genpd_init(struct generic_pm_domain *genpd,
}
EXPORT_SYMBOL_GPL(pm_genpd_init);
+/**
+ * pm_genpd_exit - Uninitialize a generic I/O PM domain object.
+ * @genpd: PM domain object to uninitialize.
+ */
+void pm_genpd_exit(struct generic_pm_domain *genpd)
+{
+ if (IS_ERR_OR_NULL(genpd))
+ return;
+
+ /* check if domain is still in registered inside the pm subsystem */
+ WARN_ON_ONCE(!list_empty(&genpd->master_links) ||
+ !list_empty(&genpd->slave_links) ||
+ !list_empty(&genpd->dev_list));
+
+ mutex_lock(&gpd_list_lock);
+ list_del(&genpd->gpd_list_node);
+ mutex_unlock(&gpd_list_lock);
+
+ mutex_destroy(&genpd->lock);
+}
+EXPORT_SYMBOL_GPL(pm_genpd_exit);
+
#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
/*
* Device Tree based PM domain providers.
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index ba4ced3..5020b36 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -123,6 +123,7 @@ extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *target);
extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
+extern void pm_genpd_exit(struct generic_pm_domain *genpd);
extern struct dev_power_governor simple_qos_governor;
extern struct dev_power_governor pm_domain_always_on_gov;
@@ -161,6 +162,9 @@ static inline void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off)
{
}
+static inline void pm_genpd_exit(struct generic_pm_domain *genpd)
+{
+}
#endif
static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
--
2.6.2
WARNING: multiple messages have this Message-ID (diff)
From: Eric Anholt <eric@anholt.net>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, Ulf Hansson <ulf.hansson@linaro.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Alexander Aring <alex.aring@gmail.com>,
Pawel Moll <pawel.moll@arm.com>,
Stephen Warren <swarren@wwwdotorg.org>,
Eric Anholt <eric@anholt.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-pm@vger.kernel.org, Lee Jones <lee@kernel.org>,
linux-kernel@vger.kernel.org, Kevin Hilman <khilman@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
linux-rpi-kernel@lists.infradead.org, Pavel Machek <pavel@ucw.cz>,
Len Brown <len.brown@intel.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/5] power: domain: add pm_genpd_exit
Date: Fri, 4 Dec 2015 09:45:44 -0800 [thread overview]
Message-ID: <1449251148-19344-2-git-send-email-eric@anholt.net> (raw)
In-Reply-To: <1449251148-19344-1-git-send-email-eric@anholt.net>
From: Alexander Aring <alex.aring@gmail.com>
This patch adds function pm_genpd_exit for undo a pm_genpd_init. This
is useful for multiple power domains while probing. If the probing fails
after one pm_genpd_init was called we need to undo all previous
registrations of generic pm domains inside the gpd_list list.
There is a check on IS_ERR_OR_NULL(genpd) which is useful to check again
registered power domains and not registered domains, the driver can use
this mechanism to have an array with registered and non-registered power
domains, where non-registered power domains are NULL.
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/base/power/domain.c | 22 ++++++++++++++++++++++
include/linux/pm_domain.h | 4 ++++
2 files changed, 26 insertions(+)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 167418e..e7aca27 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1509,6 +1509,28 @@ void pm_genpd_init(struct generic_pm_domain *genpd,
}
EXPORT_SYMBOL_GPL(pm_genpd_init);
+/**
+ * pm_genpd_exit - Uninitialize a generic I/O PM domain object.
+ * @genpd: PM domain object to uninitialize.
+ */
+void pm_genpd_exit(struct generic_pm_domain *genpd)
+{
+ if (IS_ERR_OR_NULL(genpd))
+ return;
+
+ /* check if domain is still in registered inside the pm subsystem */
+ WARN_ON_ONCE(!list_empty(&genpd->master_links) ||
+ !list_empty(&genpd->slave_links) ||
+ !list_empty(&genpd->dev_list));
+
+ mutex_lock(&gpd_list_lock);
+ list_del(&genpd->gpd_list_node);
+ mutex_unlock(&gpd_list_lock);
+
+ mutex_destroy(&genpd->lock);
+}
+EXPORT_SYMBOL_GPL(pm_genpd_exit);
+
#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
/*
* Device Tree based PM domain providers.
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index ba4ced3..5020b36 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -123,6 +123,7 @@ extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *target);
extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
+extern void pm_genpd_exit(struct generic_pm_domain *genpd);
extern struct dev_power_governor simple_qos_governor;
extern struct dev_power_governor pm_domain_always_on_gov;
@@ -161,6 +162,9 @@ static inline void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off)
{
}
+static inline void pm_genpd_exit(struct generic_pm_domain *genpd)
+{
+}
#endif
static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
--
2.6.2
WARNING: multiple messages have this Message-ID (diff)
From: eric@anholt.net (Eric Anholt)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/5] power: domain: add pm_genpd_exit
Date: Fri, 4 Dec 2015 09:45:44 -0800 [thread overview]
Message-ID: <1449251148-19344-2-git-send-email-eric@anholt.net> (raw)
In-Reply-To: <1449251148-19344-1-git-send-email-eric@anholt.net>
From: Alexander Aring <alex.aring@gmail.com>
This patch adds function pm_genpd_exit for undo a pm_genpd_init. This
is useful for multiple power domains while probing. If the probing fails
after one pm_genpd_init was called we need to undo all previous
registrations of generic pm domains inside the gpd_list list.
There is a check on IS_ERR_OR_NULL(genpd) which is useful to check again
registered power domains and not registered domains, the driver can use
this mechanism to have an array with registered and non-registered power
domains, where non-registered power domains are NULL.
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/base/power/domain.c | 22 ++++++++++++++++++++++
include/linux/pm_domain.h | 4 ++++
2 files changed, 26 insertions(+)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 167418e..e7aca27 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1509,6 +1509,28 @@ void pm_genpd_init(struct generic_pm_domain *genpd,
}
EXPORT_SYMBOL_GPL(pm_genpd_init);
+/**
+ * pm_genpd_exit - Uninitialize a generic I/O PM domain object.
+ * @genpd: PM domain object to uninitialize.
+ */
+void pm_genpd_exit(struct generic_pm_domain *genpd)
+{
+ if (IS_ERR_OR_NULL(genpd))
+ return;
+
+ /* check if domain is still in registered inside the pm subsystem */
+ WARN_ON_ONCE(!list_empty(&genpd->master_links) ||
+ !list_empty(&genpd->slave_links) ||
+ !list_empty(&genpd->dev_list));
+
+ mutex_lock(&gpd_list_lock);
+ list_del(&genpd->gpd_list_node);
+ mutex_unlock(&gpd_list_lock);
+
+ mutex_destroy(&genpd->lock);
+}
+EXPORT_SYMBOL_GPL(pm_genpd_exit);
+
#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
/*
* Device Tree based PM domain providers.
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index ba4ced3..5020b36 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -123,6 +123,7 @@ extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *target);
extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
+extern void pm_genpd_exit(struct generic_pm_domain *genpd);
extern struct dev_power_governor simple_qos_governor;
extern struct dev_power_governor pm_domain_always_on_gov;
@@ -161,6 +162,9 @@ static inline void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off)
{
}
+static inline void pm_genpd_exit(struct generic_pm_domain *genpd)
+{
+}
#endif
static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
--
2.6.2
next prev parent reply other threads:[~2015-12-04 17:47 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-04 17:45 [PATCH v2 0/5] Raspberry Pi power domains v2 Eric Anholt
2015-12-04 17:45 ` Eric Anholt
2015-12-04 17:45 ` Eric Anholt
2015-12-04 17:45 ` Eric Anholt [this message]
2015-12-04 17:45 ` [PATCH v2 1/5] power: domain: add pm_genpd_exit Eric Anholt
2015-12-04 17:45 ` Eric Anholt
2015-12-07 10:04 ` Jon Hunter
2015-12-07 10:04 ` Jon Hunter
2015-12-07 10:04 ` Jon Hunter
2015-12-08 18:59 ` Kevin Hilman
2015-12-08 18:59 ` Kevin Hilman
2015-12-08 18:59 ` Kevin Hilman
2015-12-09 10:47 ` Alexander Aring
2015-12-09 10:47 ` Alexander Aring
2015-12-09 10:54 ` Russell King - ARM Linux
2015-12-09 10:54 ` Russell King - ARM Linux
2015-12-14 9:49 ` Ulf Hansson
2015-12-14 9:49 ` Ulf Hansson
2015-12-14 9:49 ` Ulf Hansson
2015-12-04 17:45 ` [PATCH v2 2/5] ARM: bcm2835: Define two new packets from the latest firmware Eric Anholt
2015-12-04 17:45 ` Eric Anholt
2015-12-04 17:45 ` Eric Anholt
2015-12-04 17:45 ` [PATCH v2 3/5] ARM: bcm2835: add rpi power domain driver Eric Anholt
2015-12-04 17:45 ` Eric Anholt
2015-12-07 23:35 ` Kevin Hilman
2015-12-07 23:35 ` Kevin Hilman
2015-12-08 1:04 ` Eric Anholt
2015-12-08 1:04 ` Eric Anholt
2015-12-08 18:19 ` Kevin Hilman
2015-12-08 18:19 ` Kevin Hilman
2015-12-11 18:13 ` Stefan Wahren
2015-12-11 18:13 ` Stefan Wahren
2015-12-11 18:13 ` Stefan Wahren
2015-12-04 17:45 ` [PATCH v2 4/5] dt-bindings: add rpi power domain driver bindings Eric Anholt
2015-12-04 17:45 ` Eric Anholt
2015-12-04 17:45 ` [PATCH v2 5/5] ARM: bcm2835: Add the Raspberry Pi power domain driver to the DT Eric Anholt
2015-12-04 17:45 ` Eric Anholt
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