diff --git a/include/asm-m68k/intersil.h b/include/asm-m68k/intersil.h
new file mode 100644
index 0000000..f482902
--- /dev/null
+++ b/include/asm-m68k/intersil.h
@@ -0,0 +1,48 @@
+#ifndef _SUN3_INTERSIL_H
+#define _SUN3_INTERSIL_H
+/* bits 0 and 1 */
+#define INTERSIL_FREQ_32K        0x00
+#define INTERSIL_FREQ_1M         0x01
+#define INTERSIL_FREQ_2M         0x02
+#define INTERSIL_FREQ_4M         0x03
+
+/* bit 2 */
+#define INTERSIL_12H_MODE   0x00
+#define INTERSIL_24H_MODE   0x04
+
+/* bit 3 */
+#define INTERSIL_STOP            0x00
+#define INTERSIL_RUN             0x08
+
+/* bit 4 */
+#define INTERSIL_INT_ENABLE     0x10
+#define INTERSIL_INT_DISABLE    0x00
+
+/* bit 5 */
+#define INTERSIL_MODE_NORMAL     0x00
+#define INTERSIL_MODE_TEST       0x20
+
+#define INTERSIL_HZ_100_MASK	 0x02
+
+struct intersil_dt {
+	unsigned char	csec;
+	unsigned char	hour;
+	unsigned char	minute;
+	unsigned char	second;
+	unsigned char	month;
+	unsigned char	day;
+	unsigned char	year;
+	unsigned char	weekday;
+};
+
+struct intersil_7170 {
+	struct intersil_dt counter;
+	struct intersil_dt alarm;
+	unsigned char	int_reg;
+	unsigned char	cmd_reg;
+};
+
+extern volatile char* clock_va;
+#define intersil_clock ((volatile struct intersil_7170 *) clock_va)
+#define intersil_clear() (void)intersil_clock->int_reg
+#endif