int sball_fd(struct sball *sb);
int sball_read(struct sball *sb);
+int sball_axis(struct sball *sb, int axis);
+unsigned int sball_buttons(struct sball *sb);
+int sball_num_buttons(struct sball *sb);
+
+void sball_button_test(void);
+
#endif /* SBALL_H_ */