1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _SUN3_INTERSIL_H
3 #define _SUN3_INTERSIL_H
4 /* bits 0 and 1 */
5 #define INTERSIL_FREQ_32K 0x00
6 #define INTERSIL_FREQ_1M 0x01
7 #define INTERSIL_FREQ_2M 0x02
8 #define INTERSIL_FREQ_4M 0x03
9
10 /* bit 2 */
11 #define INTERSIL_12H_MODE 0x00
12 #define INTERSIL_24H_MODE 0x04
13
14 /* bit 3 */
15 #define INTERSIL_STOP 0x00
16 #define INTERSIL_RUN 0x08
17
18 /* bit 4 */
19 #define INTERSIL_INT_ENABLE 0x10
20 #define INTERSIL_INT_DISABLE 0x00
21
22 /* bit 5 */
23 #define INTERSIL_MODE_NORMAL 0x00
24 #define INTERSIL_MODE_TEST 0x20
25
26 #define INTERSIL_HZ_100_MASK 0x02
27
28 struct intersil_dt {
29 unsigned char csec;
30 unsigned char hour;
31 unsigned char minute;
32 unsigned char second;
33 unsigned char month;
34 unsigned char day;
35 unsigned char year;
36 unsigned char weekday;
37 };
38
39 struct intersil_7170 {
40 struct intersil_dt counter;
41 struct intersil_dt alarm;
42 unsigned char int_reg;
43 unsigned char cmd_reg;
44 };
45
46 extern volatile char* clock_va;
47 #define intersil_clock ((volatile struct intersil_7170 *) clock_va)
48 #define intersil_clear() (void)intersil_clock->int_reg
49 #endif
50
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