From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: Petr Mladek <pmladek@suse.com>,
linux-kernel@vger.kernel.org, rafael@kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-acpi@vger.kernel.org, devicetree@vger.kernel.org,
Rob Herring <robh@kernel.org>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Joe Perches <joe@perches.com>
Subject: [PATCH v9 05/12] device property: Add fwnode_get_name for returning the name of a node
Date: Thu, 3 Oct 2019 15:32:12 +0300 [thread overview]
Message-ID: <20191003123219.11237-6-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20191003123219.11237-1-sakari.ailus@linux.intel.com>
The fwnode framework did not have means to obtain the name of a node. Add
that now, in form of the fwnode_get_name() function and a corresponding
get_name fwnode op. OF and ACPI support is included.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Rob Herring <robh@kernel.org> (for OF)
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/acpi/property.c | 26 ++++++++++++++++++++++++++
drivers/base/property.c | 11 +++++++++++
drivers/base/swnode.c | 12 ++++++++++++
drivers/of/property.c | 6 ++++++
include/linux/fwnode.h | 2 ++
include/linux/property.h | 1 +
6 files changed, 58 insertions(+)
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index ea3d700da3ca6..5a9397a390f41 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -1311,6 +1311,31 @@ acpi_fwnode_get_reference_args(const struct fwnode_handle *fwnode,
args_count, args);
}
+static const char *acpi_fwnode_get_name(const struct fwnode_handle *fwnode)
+{
+ const struct acpi_device *adev;
+ struct fwnode_handle *parent;
+
+ /* Is this the root node? */
+ parent = fwnode_get_parent(fwnode);
+ if (!parent)
+ return "\\";
+
+ fwnode_handle_put(parent);
+
+ if (is_acpi_data_node(fwnode)) {
+ const struct acpi_data_node *dn = to_acpi_data_node(fwnode);
+
+ return dn->name;
+ }
+
+ adev = to_acpi_device_node(fwnode);
+ if (WARN_ON(!adev))
+ return NULL;
+
+ return acpi_device_bid(adev);
+}
+
static struct fwnode_handle *
acpi_fwnode_get_parent(struct fwnode_handle *fwnode)
{
@@ -1351,6 +1376,7 @@ acpi_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
.get_parent = acpi_node_get_parent, \
.get_next_child_node = acpi_get_next_subnode, \
.get_named_child_node = acpi_fwnode_get_named_child_node, \
+ .get_name = acpi_fwnode_get_name, \
.get_reference_args = acpi_fwnode_get_reference_args, \
.graph_get_next_endpoint = \
acpi_graph_get_next_endpoint, \
diff --git a/drivers/base/property.c b/drivers/base/property.c
index f2e555e68b56a..9b5ec88e72d8b 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -556,6 +556,17 @@ int device_add_properties(struct device *dev,
}
EXPORT_SYMBOL_GPL(device_add_properties);
+/**
+ * fwnode_get_name - Return the name of a node
+ * @fwnode: The firmware node
+ *
+ * Returns a pointer to the node name.
+ */
+const char *fwnode_get_name(const struct fwnode_handle *fwnode)
+{
+ return fwnode_call_ptr_op(fwnode, get_name);
+}
+
/**
* fwnode_get_parent - Return parent firwmare node
* @fwnode: Firmware whose parent is retrieved
diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
index 951e7efd47c23..ccbc3d9d6c5f5 100644
--- a/drivers/base/swnode.c
+++ b/drivers/base/swnode.c
@@ -515,6 +515,17 @@ static int software_node_read_string_array(const struct fwnode_handle *fwnode,
propname, val, nval);
}
+static const char *
+software_node_get_name(const struct fwnode_handle *fwnode)
+{
+ const struct swnode *swnode = to_swnode(fwnode);
+
+ if (!swnode)
+ return "(null)";
+
+ return kobject_name(&swnode->kobj);
+}
+
static struct fwnode_handle *
software_node_get_parent(const struct fwnode_handle *fwnode)
{
@@ -615,6 +626,7 @@ static const struct fwnode_operations software_node_ops = {
.property_present = software_node_property_present,
.property_read_int_array = software_node_read_int_array,
.property_read_string_array = software_node_read_string_array,
+ .get_name = software_node_get_name,
.get_parent = software_node_get_parent,
.get_next_child_node = software_node_get_next_child,
.get_named_child_node = software_node_get_named_child_node,
diff --git a/drivers/of/property.c b/drivers/of/property.c
index d7fa75e31f224..5bed634551ea6 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -872,6 +872,11 @@ of_fwnode_property_read_string_array(const struct fwnode_handle *fwnode,
of_property_count_strings(node, propname);
}
+static const char *of_fwnode_get_name(const struct fwnode_handle *fwnode)
+{
+ return kbasename(to_of_node(fwnode)->full_name);
+}
+
static struct fwnode_handle *
of_fwnode_get_parent(const struct fwnode_handle *fwnode)
{
@@ -993,6 +998,7 @@ const struct fwnode_operations of_fwnode_ops = {
.property_present = of_fwnode_property_present,
.property_read_int_array = of_fwnode_property_read_int_array,
.property_read_string_array = of_fwnode_property_read_string_array,
+ .get_name = of_fwnode_get_name,
.get_parent = of_fwnode_get_parent,
.get_next_child_node = of_fwnode_get_next_child_node,
.get_named_child_node = of_fwnode_get_named_child_node,
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index a11c8c56c78b4..c331e0ef31e80 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -56,6 +56,7 @@ struct fwnode_reference_args {
* otherwise.
* @property_read_string_array: Read an array of string properties. Return zero
* on success, a negative error code otherwise.
+ * @get_name: Return the name of an fwnode.
* @get_parent: Return the parent of an fwnode.
* @get_next_child_node: Return the next child node in an iteration.
* @get_named_child_node: Return a child node with a given name.
@@ -82,6 +83,7 @@ struct fwnode_operations {
(*property_read_string_array)(const struct fwnode_handle *fwnode_handle,
const char *propname, const char **val,
size_t nval);
+ const char *(*get_name)(const struct fwnode_handle *fwnode);
struct fwnode_handle *(*get_parent)(const struct fwnode_handle *fwnode);
struct fwnode_handle *
(*get_next_child_node)(const struct fwnode_handle *fwnode,
diff --git a/include/linux/property.h b/include/linux/property.h
index 5450e7ec219ac..ebc5e2016bb66 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -80,6 +80,7 @@ struct fwnode_handle *fwnode_find_reference(const struct fwnode_handle *fwnode,
const char *name,
unsigned int index);
+const char *fwnode_get_name(const struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_get_parent(const struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_get_next_parent(
struct fwnode_handle *fwnode);
--
2.20.1
next prev parent reply other threads:[~2019-10-03 12:33 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-03 12:32 [PATCH v9 00/12] Device property improvements, add %pfw format specifier Sakari Ailus
2019-10-03 12:32 ` [PATCH v9 01/12] software node: Get reference to parent swnode in get_parent op Sakari Ailus
2019-10-03 12:32 ` [PATCH v9 02/12] software node: Make argument to to_software_node const Sakari Ailus
2019-10-03 12:32 ` [PATCH v9 03/12] device property: Move fwnode_get_parent() up Sakari Ailus
2019-10-03 12:32 ` [PATCH v9 04/12] device property: Add functions for accessing node's parents Sakari Ailus
2019-10-03 12:32 ` Sakari Ailus [this message]
2019-10-03 12:32 ` [PATCH v9 06/12] device property: Add a function to obtain a node's prefix Sakari Ailus
2019-10-03 12:32 ` [PATCH v9 07/12] lib/vsprintf: Remove support for %pF and %pf in favour of %pS and %ps Sakari Ailus
2019-10-08 11:53 ` Petr Mladek
2019-10-03 12:32 ` [PATCH v9 08/12] lib/vsprintf: Add a note on re-using %pf or %pF Sakari Ailus
2019-10-08 11:54 ` Petr Mladek
2019-10-03 12:32 ` [PATCH v9 09/12] lib/vsprintf: Make use of fwnode API to obtain node names and separators Sakari Ailus
2020-01-02 22:20 ` Guenter Roeck
2020-01-03 11:21 ` Sakari Ailus
2020-01-03 14:42 ` Petr Mladek
2020-01-03 18:35 ` Guenter Roeck
2020-01-13 9:17 ` Petr Mladek
2020-01-17 14:23 ` Sakari Ailus
2019-10-03 12:32 ` [PATCH v9 10/12] lib/vsprintf: OF nodes are first and foremost, struct device_nodes Sakari Ailus
2019-10-03 12:32 ` [PATCH v9 11/12] lib/vsprintf: Add %pfw conversion specifier for printing fwnode names Sakari Ailus
2019-10-03 12:32 ` [PATCH v9 12/12] lib/test_printf: Add tests for %pfw printk modifier Sakari Ailus
2019-10-08 12:24 ` [PATCH v9 00/12] Device property improvements, add %pfw format specifier Petr Mladek
2019-10-11 9:28 ` Rafael J. Wysocki
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