device property: Implement device_is_compatible()

Some users want to use the struct device pointer to see if the
device is compatible in terms of Open Firmware specifications,
i.e. if it has a 'compatible' property and it matches to the
given value. Provide inline helper for the users.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Message-ID: <20230609154900.43024-3-andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/linux/property.h b/include/linux/property.h
index 66df1a1..8c3c668 100644 (file)
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -85,6 +85,18 @@ bool fwnode_device_is_compatible(const struct fwnode_handle *fwnode, const char
        return fwnode_property_match_string(fwnode, "compatible", compat) >= 0;
 }
 
+/**
+ * device_is_compatible - match 'compatible' property of the device with a given string
+ * @dev: Pointer to the struct device
+ * @compat: The string to match 'compatible' property with
+ *
+ * Returns: true if matches, otherwise false.
+ */
+static inline bool device_is_compatible(const struct device *dev, const char *compat)
+{
+       return fwnode_device_is_compatible(dev_fwnode(dev), compat);
+}
+
 int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
                                       const char *prop, const char *nargs_prop,
                                       unsigned int nargs, unsigned int index,