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authorLinus Torvalds <torvalds@linux-foundation.org>2019-11-27 06:45:12 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-11-27 06:45:12 +0300
commit361b0d286afea0d867537536977a695b5557d133 (patch)
treea9a362c2f4b687435fc1b11f411f593f86d0467d /drivers/acpi
parent6e9f879684b46331f51d0c76ebee981c788417db (diff)
parent1afc14032e54a7e6c38304dc9a6bda1b6416f2b7 (diff)
downloadlinux-361b0d286afea0d867537536977a695b5557d133.tar.xz
Merge tag 'devprop-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device properties framework updates from Rafael Wysocki: "Add support for printing fwnode names using a new conversion specifier "%pfw" (Sakari Ailus), clean up the software node and efi/apple-properties code in preparation for improved software node reference properties handling (Dmitry Torokhov) and fix the struct fwnode_operations description (Heikki Krogerus)" * tag 'devprop-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (22 commits) software node: simplify property_entry_read_string_array() software node: unify PROPERTY_ENTRY_XXX macros software node: remove property_entry_read_uNN_array functions software node: get rid of property_set_pointer() software node: clean up property_copy_string_array() software node: mark internal macros with double underscores efi/apple-properties: use PROPERTY_ENTRY_U8_ARRAY_LEN software node: introduce PROPERTY_ENTRY_XXX_ARRAY_LEN() software node: remove DEV_PROP_MAX device property: Fix the description of struct fwnode_operations lib/test_printf: Add tests for %pfw printk modifier lib/vsprintf: Add %pfw conversion specifier for printing fwnode names lib/vsprintf: OF nodes are first and foremost, struct device_nodes lib/vsprintf: Make use of fwnode API to obtain node names and separators lib/vsprintf: Add a note on re-using %pf or %pF lib/vsprintf: Remove support for %pF and %pf in favour of %pS and %ps device property: Add a function to obtain a node's prefix device property: Add fwnode_get_name for returning the name of a node device property: Add functions for accessing node's parents device property: Move fwnode_get_parent() up ...
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/property.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 3eacf474e1e3..e601c4511a8b 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -1317,6 +1317,52 @@ 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 const char *
+acpi_fwnode_get_name_prefix(const struct fwnode_handle *fwnode)
+{
+ struct fwnode_handle *parent;
+
+ /* Is this the root node? */
+ parent = fwnode_get_parent(fwnode);
+ if (!parent)
+ return "";
+
+ /* Is this 2nd node from the root? */
+ parent = fwnode_get_next_parent(parent);
+ if (!parent)
+ return "";
+
+ fwnode_handle_put(parent);
+
+ /* ACPI device or data node. */
+ return ".";
+}
+
static struct fwnode_handle *
acpi_fwnode_get_parent(struct fwnode_handle *fwnode)
{
@@ -1357,6 +1403,8 @@ 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_name_prefix = acpi_fwnode_get_name_prefix, \
.get_reference_args = acpi_fwnode_get_reference_args, \
.graph_get_next_endpoint = \
acpi_graph_get_next_endpoint, \