iommu/of: make of_pci_map_rid() available for other devices too

iommu-map property is also used by devices with fsl-mc. This
patch moves the of_pci_map_rid to generic location, so that it
can be used by other busses too.

'of_pci_map_rid' is renamed here to 'of_map_rid' and there is no
functional change done in the API.

Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/of.h b/include/linux/of.h
index 99b0ebf49632..bf577ca3c8e7 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -550,6 +550,10 @@ bool of_console_check(struct device_node *dn, char *name, int index);
 
 extern int of_cpu_node_to_id(struct device_node *np);
 
+int of_map_rid(struct device_node *np, u32 rid,
+               const char *map_name, const char *map_mask_name,
+               struct device_node **target, u32 *id_out);
+
 #else /* CONFIG_OF */
 
 static inline void of_core_init(void)
@@ -952,6 +956,13 @@ static inline int of_cpu_node_to_id(struct device_node *np)
         return -ENODEV;
 }
 
+static inline int of_map_rid(struct device_node *np, u32 rid,
+                             const char *map_name, const char *map_mask_name,
+                             struct device_node **target, u32 *id_out)
+{
+        return -EINVAL;
+}
+
 #define of_match_ptr(_ptr)      NULL
 #define of_match_node(_matches, _node)  NULL
 #endif /* CONFIG_OF */