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device property: Make dev_fwnode() public 

The function to obtain a fwnode related to a struct device is useful for
drivers that use the fwnode property API: it allows not being aware of the
underlying firmware implementation.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sakari Ailus 2017-03-28 10:52:24 +03:00 committed by Rafael J. Wysocki
parent 67831837e0
commit e44bb0cbdc
2 changed files with 4 additions and 1 deletions
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3
drivers/base/property.c
View File

@ -183,11 +183,12 @@ static int pset_prop_read_string(struct property_set *pset,
return 0;
}
static inline struct fwnode_handle *dev_fwnode(struct device *dev)
struct fwnode_handle *dev_fwnode(struct device *dev)
{
return IS_ENABLED(CONFIG_OF) && dev->of_node ?
&dev->of_node->fwnode : dev->fwnode;
}
EXPORT_SYMBOL_GPL(dev_fwnode);
/**
* device_property_present - check if a property of a device is present

2
include/linux/property.h
View File

@ -33,6 +33,8 @@ enum dev_dma_attr {
DEV_DMA_COHERENT,
};
struct fwnode_handle *dev_fwnode(struct device *dev);
bool device_property_present(struct device *dev, const char *propname);
int device_property_read_u8_array(struct device *dev, const char *propname,
u8 *val, size_t nval);