Add support for SX151x SPI GPIO Expanders

Signed-off-by: Viktar Palstsiuk <viktar.palstsiuk@promwad.com>
diff --git a/include/sx151x.h b/include/sx151x.h
new file mode 100644
index 0000000..be42b06
--- /dev/null
+++ b/include/sx151x.h
@@ -0,0 +1,17 @@
+/*
+ * (C) Copyright 2013
+ * Viktar Palstsiuk, Promwad, viktar.palstsiuk@promwad.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __SX151X_H_
+#define __SX151X_H_
+
+int sx151x_get_value(int chip, int gpio);
+int sx151x_set_value(int chip, int gpio, int val);
+int sx151x_direction_input(int chip, int gpio);
+int sx151x_direction_output(int chip, int gpio);
+int sx151x_reset(int chip);
+
+#endif /* __SX151X_H_ */