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-rw-r--r--include/linux/cordic.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/cordic.h b/include/linux/cordic.h
index cf68ca4a508c..3d656f54d64f 100644
--- a/include/linux/cordic.h
+++ b/include/linux/cordic.h
@@ -18,6 +18,15 @@
#include <linux/types.h>
+#define CORDIC_ANGLE_GEN 39797
+#define CORDIC_PRECISION_SHIFT 16
+#define CORDIC_NUM_ITER (CORDIC_PRECISION_SHIFT + 2)
+
+#define CORDIC_FIXED(X) ((s32)((X) << CORDIC_PRECISION_SHIFT))
+#define CORDIC_FLOAT(X) (((X) >= 0) \
+ ? ((((X) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1) \
+ : -((((-(X)) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1))
+
/**
* struct cordic_iq - i/q coordinate.
*