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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>
This commit is contained in:
Sinan Kaya 2017-12-13 02:20:49 -05:00 committed by Vinod Koul
parent 80212a1623
commit b283f15761
3 changed files with 13 additions and 0 deletions
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7
drivers/base/property.c
View File

@ -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);

4
include/linux/fwnode.h
View File

@ -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,

2
include/linux/property.h
View File

@ -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);