[PATCH V5 3/7] device property: Introduce a common API to fetch device match data

From: Sinan Kaya
Date: Fri Dec 01 2017 - 23:29:44 EST


There is an OF/ACPI function to obtain the driver data. We want to hide
OF/ACPI details from the device drivers and abstract following the device
family of functions.

Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx>
---
drivers/base/property.c | 7 +++++++
include/linux/fwnode.h | 4 ++++
include/linux/property.h | 2 ++
3 files changed, 13 insertions(+)

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 7ed99c1..dfc53af 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1335,3 +1335,10 @@ int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
return fwnode_call_int_op(fwnode, graph_parse_endpoint, endpoint);
}
EXPORT_SYMBOL(fwnode_graph_parse_endpoint);
+
+void *device_get_match_data(struct device *dev)
+{
+ return fwnode_call_ptr_op(dev_fwnode(dev), get_match_data,
+ dev->driver);
+}
+EXPORT_SYMBOL_GPL(device_get_match_data);
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index 0c35b6c..6e5e1dd 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -15,6 +15,7 @@
#include <linux/types.h>

struct fwnode_operations;
+struct device_driver;

struct fwnode_handle {
struct fwnode_handle *secondary;
@@ -66,6 +67,7 @@ struct fwnode_reference_args {
* endpoint node.
* @graph_get_port_parent: Return the parent node of a port node.
* @graph_parse_endpoint: Parse endpoint for port and endpoint id.
+ * @get_match_data: Return the driver match data.
*/
struct fwnode_operations {
void (*get)(struct fwnode_handle *fwnode);
@@ -101,6 +103,8 @@ struct fwnode_operations {
(*graph_get_port_parent)(struct fwnode_handle *fwnode);
int (*graph_parse_endpoint)(const struct fwnode_handle *fwnode,
struct fwnode_endpoint *endpoint);
+ void *(*get_match_data)(const struct fwnode_handle *fwnode,
+ const struct device_driver *drv);
};

#define fwnode_has_op(fwnode, op) \
diff --git a/include/linux/property.h b/include/linux/property.h
index 6bebee1..01fa55b 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -275,6 +275,8 @@ int device_add_properties(struct device *dev,

enum dev_dma_attr device_get_dma_attr(struct device *dev);

+void *device_get_match_data(struct device *dev);
+
int device_get_phy_mode(struct device *dev);

void *device_get_mac_address(struct device *dev, char *addr, int alen);
--
1.9.1