device property: Introduce a common API to fetch device match data

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@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 851b1b6596a4a11a38858bb1fa67d2cb5ea0679b..09eaac9400ed6727853339113cc071ac58cdbfa1 100644 (file)
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1340,3 +1340,10 @@ 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), device_get_match_data,
+                                 dev);
+}
+EXPORT_SYMBOL_GPL(device_get_match_data);

diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index 411a84c6c400c3a91fb4ca789300901ccca7fdbc..4fa1a489efe4cd6e15d88a269044fbd37dfe054d 100644 (file)
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -15,6 +15,7 @@
 #include <linux/types.h>
 
 struct fwnode_operations;
+struct device;
 
 struct fwnode_handle {
        struct fwnode_handle *secondary;
@@ -51,6 +52,7 @@ struct fwnode_reference_args {
  * struct fwnode_operations - Operations for fwnode interface
  * @get: Get a reference to an fwnode.
  * @put: Put a reference to an fwnode.
+ * @device_get_match_data: Return the device driver match data.
  * @property_present: Return true if a property is present.
  * @property_read_integer_array: Read an array of integer properties. Return
  *                              zero on success, a negative error code
@@ -71,6 +73,8 @@ struct fwnode_operations {
        struct fwnode_handle *(*get)(struct fwnode_handle *fwnode);
        void (*put)(struct fwnode_handle *fwnode);
        bool (*device_is_available)(const struct fwnode_handle *fwnode);
+       void *(*device_get_match_data)(const struct fwnode_handle *fwnode,
+                                      const struct device *dev);
        bool (*property_present)(const struct fwnode_handle *fwnode,
                                 const char *propname);
        int (*property_read_int_array)(const struct fwnode_handle *fwnode,

diff --git a/include/linux/property.h b/include/linux/property.h
index f6189a3ac63ca2f57d4a29ee49df68148a957675..6653ed4b99f9a4f910f5ded5bbfc627af2a3ee5e 100644 (file)
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -275,6 +275,8 @@ bool device_dma_supported(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);