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
Subject: [PATCH 2/5] device property: Add fwnode_get_name for returning the name of a node
Date: Fri, 22 Mar 2019 17:29:27 +0200 [thread overview]
Message-ID: <20190322152930.16642-3-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20190322152930.16642-1-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>
---
drivers/acpi/property.c | 24 ++++++++++++++++++++++++
drivers/base/property.c | 12 ++++++++++++
drivers/of/property.c | 6 ++++++
include/linux/fwnode.h | 2 ++
include/linux/property.h | 1 +
5 files changed, 45 insertions(+)
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 77abe0ec4043..8c9a4c02cde2 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -1291,6 +1291,29 @@ 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;
+
+ parent = fwnode_get_parent(fwnode);
+ /* Is this the root node? */
+ 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);
+
+ return adev ? acpi_device_bid(adev) : NULL;
+}
+
static struct fwnode_handle *
acpi_fwnode_get_parent(struct fwnode_handle *fwnode)
{
@@ -1331,6 +1354,7 @@ 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 3f5ff6b23ae4..7ee3786bcde3 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -533,6 +533,18 @@ 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/of/property.c b/drivers/of/property.c
index 8631efa1daa1..f0a7b78f2d9f 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 faebf0ca0686..85b7fa4dc727 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -59,6 +59,7 @@ 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.
@@ -85,6 +86,7 @@ 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 1164ac974ee8..2f5df900e310 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -78,6 +78,7 @@ int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
unsigned int nargs, unsigned int index,
struct fwnode_reference_args *args);
+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);
--
2.11.0
next prev parent reply other threads:[~2019-03-22 15:29 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-22 15:29 [PATCH 0/5] Device property improvements, add %pfw format specifier Sakari Ailus
2019-03-22 15:29 ` [PATCH 1/5] device property: Add functions for accessing node's parents Sakari Ailus
2019-03-22 15:29 ` Sakari Ailus [this message]
2019-03-24 17:21 ` [PATCH 2/5] device property: Add fwnode_get_name for returning the name of a node Randy Dunlap
2019-03-24 18:19 ` Sakari Ailus
2019-03-22 15:29 ` [PATCH 3/5] device property: Add a function to obtain a node's prefix Sakari Ailus
2019-03-22 15:29 ` [PATCH 4/5] lib/vsprintf: Make use of fwnode API to obtain node names and separators Sakari Ailus
2019-03-27 12:53 ` Petr Mladek
2019-03-27 13:49 ` Sakari Ailus
2019-03-22 15:29 ` [PATCH 5/5] lib/vsprintf: Add %pfw conversion specifier for printing fwnode names Sakari Ailus
2019-03-22 17:21 ` Andy Shevchenko
2019-03-24 18:17 ` Sakari Ailus
2019-03-26 13:13 ` Andy Shevchenko
2019-03-26 13:39 ` Sakari Ailus
2019-03-26 13:55 ` Andy Shevchenko
2019-03-26 14:09 ` Sakari Ailus
2019-03-26 15:21 ` Petr Mladek
2019-03-26 14:06 ` Heikki Krogerus
2019-03-26 14:12 ` Sakari Ailus
2019-03-26 14:30 ` Andy Shevchenko
2019-03-26 15:50 ` Petr Mladek
2019-03-26 14:30 ` Heikki Krogerus
2019-03-26 15:13 ` Petr Mladek
2019-03-27 14:10 ` Sakari Ailus
2019-03-28 14:35 ` Petr Mladek
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