fpga: region: add fpga_region_class_find

Add a function for searching the fpga-region class.  This
will be useful when device tree code is no longer in the
same file that declares the fpga-region class.  Another
step in separating common FPGA region code from device
tree support.

Signed-off-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/fpga/fpga-region.h b/include/linux/fpga/fpga-region.h
index 8c8a3249f96c..704844944631 100644
--- a/include/linux/fpga/fpga-region.h
+++ b/include/linux/fpga/fpga-region.h
@@ -27,8 +27,11 @@ struct fpga_region {
 
 #define to_fpga_region(d) container_of(d, struct fpga_region, dev)
 
-int fpga_region_program_fpga(struct fpga_region *region);
+struct fpga_region *fpga_region_class_find(
+        struct device *start, const void *data,
+        int (*match)(struct device *, const void *));
 
+int fpga_region_program_fpga(struct fpga_region *region);
 int fpga_region_register(struct device *dev, struct fpga_region *region);
 int fpga_region_unregister(struct fpga_region *region);