state: backend: support phandle and of_path references

This patch improves the backend property, it can be either a phandle or a
of_path. During probe() of the state driver the backend property is
dereferenced and the resulting of_path is saved in the state context. In a
later patch it will be used to generate a phandle reference to the backend
during DT fixup.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/include/state.h b/include/state.h
index 116ec6301c..08c4e8654b 100644
--- a/include/state.h
+++ b/include/state.h
@@ -5,9 +5,10 @@
 
 struct state;
 
-int state_backend_dtb_file(struct state *state, const char *path);
-int state_backend_raw_file(struct state *state, const char *path,
-		off_t offset, size_t size);
+int state_backend_dtb_file(struct state *state, const char *of_path,
+		const char *path);
+int state_backend_raw_file(struct state *state, const char *of_path,
+		const char *path, off_t offset, size_t size);
 
 struct state *state_new_from_node(const char *name, struct device_node *node);
 void state_release(struct state *state);