From: Tomeu Vizoso <tomeu.vizoso@collabora.com>
To: linux-arm-kernel@lists.infradead.org
Cc: "Tomeu Vizoso" <tomeu.vizoso@collabora.com>,
"Alexander Holler" <holler@ahsoftware.de>,
"Alexandre Courbot" <gnurou@gmail.com>,
"Andrzej Hajda" <a.hajda@samsung.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
"Grant Likely" <grant.likely@linaro.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Ian Campbell" <ijc+devicetree@hellion.org.uk>,
"Javier Martinez Canillas" <javier.martinez@collabora.co.uk>,
"Krzysztof Kozlowski" <k.kozlowski@samsung.com>,
"Kumar Gala" <galak@codeaurora.org>,
"Len Brown" <lenb@kernel.org>,
"Linus Walleij" <linus.walleij@linaro.org>,
linux-kernel@vger.kernel.org, "Lv Zheng" <lv.zheng@intel.com>,
"Mark Brown" <broonie@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Pawel Moll" <pawel.moll@arm.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"Robert Moore" <robert.moore@intel.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Russell King" <linux@arm.linux.org.uk>,
"Stephen Warren" <swarren@wwwdotorg.org>,
"Terje Bergström" <tbergstrom@nvidia.com>,
"Thierry Reding" <thierry.reding@gmail.com>
Subject: [PATCH 11/13] device property: add fwnode_get_parent()
Date: Wed, 17 Jun 2015 15:42:21 +0200 [thread overview]
Message-ID: <1434548543-22949-12-git-send-email-tomeu.vizoso@collabora.com> (raw)
In-Reply-To: <1434548543-22949-1-git-send-email-tomeu.vizoso@collabora.com>
So we can query the parent of a fwnode without having to resort to API
that is specific to a firmware data format.
Also adds a acpi_get_parent_dev() function to retrieve the parent
of an acpi_device. acpi_get_parent() already existed but it works with
acpi_handles.
The interface covers both ACPI and Device Trees.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
drivers/base/property.c | 23 +++++++++++++++++++++++
include/acpi/acpi_bus.h | 5 +++++
include/linux/acpi.h | 5 +++++
include/linux/property.h | 2 ++
4 files changed, 35 insertions(+)
diff --git a/drivers/base/property.c b/drivers/base/property.c
index 1d0b116..28645a9 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -519,3 +519,26 @@ unsigned int device_get_child_node_count(struct device *dev)
return count;
}
EXPORT_SYMBOL_GPL(device_get_child_node_count);
+
+/**
+ * fwnode_get_parent - return the parent node of a device node
+ * @fwnode: Device node to find the parent node of
+ */
+struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode)
+{
+ if (is_of_node(fwnode)) {
+ struct device_node *node = of_node(fwnode);
+
+ if (node->parent)
+ return &node->parent->fwnode;
+ } else if (is_acpi_node(fwnode)) {
+ struct acpi_device *node;
+
+ node = acpi_get_parent_dev(acpi_node(fwnode));
+ if (node)
+ return acpi_fwnode_handle(node);
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(fwnode_get_parent);
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 5dec08d..bf8ef1a 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -401,6 +401,11 @@ static inline void *acpi_driver_data(struct acpi_device *d)
return d->driver_data;
}
+static inline struct acpi_device *acpi_get_parent_dev(struct acpi_device *adev)
+{
+ return adev->parent;
+}
+
#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index a4acb55..d9dfacc 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -825,6 +825,11 @@ static inline struct acpi_device *acpi_get_next_child(struct device *dev,
return NULL;
}
+static inline struct acpi_device *acpi_get_parent_dev(struct acpi_device *adev)
+{
+ return NULL;
+}
+
#endif
#endif /*_LINUX_ACPI_H*/
diff --git a/include/linux/property.h b/include/linux/property.h
index de8bdf4..01e0483 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -63,6 +63,8 @@ int fwnode_property_read_string(struct fwnode_handle *fwnode,
struct fwnode_handle *device_get_next_child_node(struct device *dev,
struct fwnode_handle *child);
+struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode);
+
#define device_for_each_child_node(dev, child) \
for (child = device_get_next_child_node(dev, NULL); child; \
child = device_get_next_child_node(dev, child))
--
2.4.1
WARNING: multiple messages have this Message-ID (diff)
From: tomeu.vizoso@collabora.com (Tomeu Vizoso)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 11/13] device property: add fwnode_get_parent()
Date: Wed, 17 Jun 2015 15:42:21 +0200 [thread overview]
Message-ID: <1434548543-22949-12-git-send-email-tomeu.vizoso@collabora.com> (raw)
In-Reply-To: <1434548543-22949-1-git-send-email-tomeu.vizoso@collabora.com>
So we can query the parent of a fwnode without having to resort to API
that is specific to a firmware data format.
Also adds a acpi_get_parent_dev() function to retrieve the parent
of an acpi_device. acpi_get_parent() already existed but it works with
acpi_handles.
The interface covers both ACPI and Device Trees.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
drivers/base/property.c | 23 +++++++++++++++++++++++
include/acpi/acpi_bus.h | 5 +++++
include/linux/acpi.h | 5 +++++
include/linux/property.h | 2 ++
4 files changed, 35 insertions(+)
diff --git a/drivers/base/property.c b/drivers/base/property.c
index 1d0b116..28645a9 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -519,3 +519,26 @@ unsigned int device_get_child_node_count(struct device *dev)
return count;
}
EXPORT_SYMBOL_GPL(device_get_child_node_count);
+
+/**
+ * fwnode_get_parent - return the parent node of a device node
+ * @fwnode: Device node to find the parent node of
+ */
+struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode)
+{
+ if (is_of_node(fwnode)) {
+ struct device_node *node = of_node(fwnode);
+
+ if (node->parent)
+ return &node->parent->fwnode;
+ } else if (is_acpi_node(fwnode)) {
+ struct acpi_device *node;
+
+ node = acpi_get_parent_dev(acpi_node(fwnode));
+ if (node)
+ return acpi_fwnode_handle(node);
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(fwnode_get_parent);
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 5dec08d..bf8ef1a 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -401,6 +401,11 @@ static inline void *acpi_driver_data(struct acpi_device *d)
return d->driver_data;
}
+static inline struct acpi_device *acpi_get_parent_dev(struct acpi_device *adev)
+{
+ return adev->parent;
+}
+
#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index a4acb55..d9dfacc 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -825,6 +825,11 @@ static inline struct acpi_device *acpi_get_next_child(struct device *dev,
return NULL;
}
+static inline struct acpi_device *acpi_get_parent_dev(struct acpi_device *adev)
+{
+ return NULL;
+}
+
#endif
#endif /*_LINUX_ACPI_H*/
diff --git a/include/linux/property.h b/include/linux/property.h
index de8bdf4..01e0483 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -63,6 +63,8 @@ int fwnode_property_read_string(struct fwnode_handle *fwnode,
struct fwnode_handle *device_get_next_child_node(struct device *dev,
struct fwnode_handle *child);
+struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode);
+
#define device_for_each_child_node(dev, child) \
for (child = device_get_next_child_node(dev, NULL); child; \
child = device_get_next_child_node(dev, child))
--
2.4.1
next prev parent reply other threads:[~2015-06-17 13:43 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-17 13:42 [PATCH 00/13] Discover and probe dependencies Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 01/13] gpiolib: Fix docs for gpiochip_add_pingroup_range Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-07-13 12:16 ` Linus Walleij
2015-07-13 12:16 ` Linus Walleij
2015-06-17 13:42 ` [PATCH 02/13] driver-core: defer all probes until late_initcall Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-18 21:50 ` Rafael J. Wysocki
2015-06-18 21:50 ` Rafael J. Wysocki
2015-06-19 13:36 ` Tomeu Vizoso
2015-06-19 13:36 ` Tomeu Vizoso
2015-06-19 23:20 ` Rafael J. Wysocki
2015-06-19 23:20 ` Rafael J. Wysocki
2015-06-23 0:07 ` Rob Herring
2015-06-23 0:07 ` Rob Herring
2015-06-23 14:37 ` Rafael J. Wysocki
2015-06-23 14:37 ` Rafael J. Wysocki
2015-06-23 14:17 ` Tomeu Vizoso
2015-06-23 14:17 ` Tomeu Vizoso
2015-06-23 14:51 ` Rafael J. Wysocki
2015-06-23 14:51 ` Rafael J. Wysocki
2015-06-23 14:37 ` Tomeu Vizoso
2015-06-23 14:37 ` Tomeu Vizoso
2015-06-24 0:14 ` Rafael J. Wysocki
2015-06-24 0:14 ` Rafael J. Wysocki
2015-06-17 13:42 ` [PATCH 03/13] ARM: tegra: Add gpio-ranges property Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 17:25 ` Mark Brown
2015-06-17 17:25 ` Mark Brown
2015-06-18 8:06 ` Tomeu Vizoso
2015-06-18 8:06 ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 04/13] pinctrl: tegra: Only set the gpio range if needed Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-07-13 20:14 ` Linus Walleij
2015-07-13 20:14 ` Linus Walleij
2015-07-14 8:34 ` Tomeu Vizoso
2015-07-14 8:34 ` Tomeu Vizoso
2015-07-15 3:17 ` Alexandre Courbot
2015-07-15 3:17 ` Alexandre Courbot
2015-07-15 8:13 ` Tomeu Vizoso
2015-07-15 8:13 ` Tomeu Vizoso
2015-07-17 8:04 ` Linus Walleij
2015-07-17 8:04 ` Linus Walleij
2015-07-17 8:19 ` Tomeu Vizoso
2015-07-17 8:19 ` Tomeu Vizoso
2015-07-17 9:36 ` Linus Walleij
2015-07-17 9:36 ` Linus Walleij
2015-06-17 13:42 ` [PATCH 05/13] driver core: fix docbook for device_private.device Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 06/13] of/platform: Set fwnode field for new devices Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 17:27 ` Mark Brown
2015-06-17 17:27 ` Mark Brown
2015-06-17 13:42 ` [PATCH 07/13] driver-core: Add class.get_dependencies() callback Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 08/13] gpio: sysfs: implement class.get_dependencies() Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 17:40 ` Mark Brown
2015-06-17 17:40 ` Mark Brown
2015-06-30 15:00 ` Tomeu Vizoso
2015-06-30 15:00 ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 09/13] gpu: host1x: " Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 10/13] driver-core: add for_each_class() Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso [this message]
2015-06-17 13:42 ` [PATCH 11/13] device property: add fwnode_get_parent() Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 12/13] device property: add fwnode_get_name() Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 13:42 ` [PATCH 13/13] driver-core: probe dependencies before probing Tomeu Vizoso
2015-06-17 13:42 ` Tomeu Vizoso
2015-06-17 18:13 ` Mark Brown
2015-06-17 18:13 ` Mark Brown
2015-06-30 15:18 ` Tomeu Vizoso
2015-06-30 15:18 ` Tomeu Vizoso
2015-06-18 9:42 ` [PATCH 00/13] Discover and probe dependencies Andrzej Hajda
2015-06-18 9:42 ` Andrzej Hajda
2015-06-18 9:57 ` Russell King - ARM Linux
2015-06-18 9:57 ` Russell King - ARM Linux
2015-06-18 10:36 ` Mark Brown
2015-06-18 10:36 ` Mark Brown
2015-06-18 13:14 ` Andrzej Hajda
2015-06-18 13:14 ` Andrzej Hajda
2015-06-18 14:38 ` Tomeu Vizoso
2015-06-18 14:38 ` Tomeu Vizoso
2015-06-18 14:49 ` Russell King - ARM Linux
2015-06-18 14:49 ` Russell King - ARM Linux
2015-06-18 15:32 ` Alexander Holler
2015-06-18 15:32 ` Alexander Holler
2015-06-18 14:57 ` Tomeu Vizoso
2015-06-18 14:57 ` Tomeu Vizoso
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