This implements the get_name fwnode op for ACPI.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
---
drivers/acpi/property.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 8c7c4583b52d..c24cf02e9214 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -1219,6 +1219,33 @@ acpi_graph_get_remote_endpoint(const struct fwnode_handle *__fwnode)
return acpi_graph_get_child_prop_value(fwnode, "endpoint", endpoint_nr);
}
+static int
+acpi_fwnode_get_name(const struct fwnode_handle *fwnode, char *buf, size_t len)
+{
+ struct acpi_buffer buffer;
+ acpi_status status;
+
+ if (is_acpi_data_node(fwnode)) {
+ if (len < strlen(to_acpi_data_node(fwnode)->name) + 1)
+ return -EOVERFLOW;
+ sprintf(buf, "%s", to_acpi_data_node(fwnode)->name);
+ return 0;
+ }
+
+ if (len < ACPI_NAME_SIZE + 1)
+ return -EOVERFLOW;
+
+ buffer.length = ACPI_NAME_SIZE + 1;
+ buffer.pointer = buf;
+
+ status = acpi_get_name(to_acpi_device_node(fwnode)->handle,
+ ACPI_SINGLE_NAME, &buffer);
+ if (ACPI_FAILURE(status))
+ return -ENXIO;
+
+ return 0;
+}
+
static bool acpi_fwnode_device_is_available(const struct fwnode_handle *fwnode)
{
if (!is_acpi_device_node(fwnode))
@@ -1310,6 +1337,7 @@ acpi_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
#define DECLARE_ACPI_FWNODE_OPS(ops) \
const struct fwnode_operations ops = { \
+ .get_name = acpi_fwnode_get_name, \
.device_is_available = acpi_fwnode_device_is_available, \
.device_get_match_data = acpi_fwnode_device_get_match_data, \
.property_present = acpi_fwnode_property_present, \
--
2.19.2
