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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * Registers for the SGS-Thomson M48T35 Timekeeper RAM chip
3 * and
4 * Registers for the SGS-Thomson M48T37 Timekeeper RAM chip
5 * The 37 is the 35 plus alarm and century thus the offsets
6 * are shifted by the extra registers.
7 */
8
9#ifndef __PPC_M48T35_H
10#define __PPC_M48T35_H
11
12/* RTC offsets */
13#define M48T35_RTC_FLAGS (-8) /* the negative regs are really T37 only */
14#define M48T35_RTC_CENTURY (-7)
15#define M48T35_RTC_AL_SEC (-6)
16#define M48T35_RTC_AL_MIN (-5)
17#define M48T35_RTC_AL_HRS (-4)
18#define M48T35_RTC_AL_DOM (-3)
19#define M48T35_RTC_INTERRUPT (-2)
20#define M48T35_RTC_WATCHDOG (-1)
21#define M48T35_RTC_CONTROL 0 /* T35 starts here */
22#define M48T35_RTC_SECONDS 1
23#define M48T35_RTC_MINUTES 2
24#define M48T35_RTC_HOURS 3
25#define M48T35_RTC_DAY 4
26#define M48T35_RTC_DOM 5
27#define M48T35_RTC_MONTH 6
28#define M48T35_RTC_YEAR 7
29
30/* this way help us know which bits go with which regs */
31#define M48T35_RTC_FLAGS_BL 0x10
32#define M48T35_RTC_FLAGS_AF 0x40
33#define M48T35_RTC_FLAGS_WDF 0x80
34
35#define M48T35_RTC_INTERRUPT_AFE 0x80
36#define M48T35_RTC_INTERRUPT_ABE 0x20
37#define M48T35_RTC_INTERRUPT_ALL (M48T35_RTC_INTERRUPT_AFE|M48T35_RTC_INTERRUPT_ABE)
38
39#define M48T35_RTC_WATCHDOG_RB 0x03
40#define M48T35_RTC_WATCHDOG_BMB 0x7c
41#define M48T35_RTC_WATCHDOG_WDS 0x80
42#define M48T35_RTC_WATCHDOG_ALL (M48T35_RTC_WATCHDOG_RB|M48T35_RTC_WATCHDOG_BMB|M48T35_RTC_W
43
44#define M48T35_RTC_CONTROL_WRITE 0x80
45#define M48T35_RTC_CONTROL_READ 0x40
46#define M48T35_RTC_CONTROL_CAL_SIGN 0x20
47#define M48T35_RTC_CONTROL_CAL_VALUE 0x1f
48#define M48T35_RTC_CONTROL_LOCKED (M48T35_RTC_WRITE|M48T35_RTC_READ)
49#define M48T35_RTC_CONTROL_CALIBRATION (M48T35_RTC_CONTROL_CAL_SIGN|M48T35_RTC_CONTROL_CAL_VALUE)
50
51#define M48T35_RTC_SECONDS_SEC_1 0x0f
52#define M48T35_RTC_SECONDS_SEC_10 0x70
53#define M48T35_RTC_SECONDS_ST 0x80
54#define M48T35_RTC_SECONDS_SEC_ALL (M48T35_RTC_SECONDS_SEC_1|M48T35_RTC_SECONDS_SEC_10)
55
56#define M48T35_RTC_MINUTES_MIN_1 0x0f
57#define M48T35_RTC_MINUTES_MIN_10 0x70
58#define M48T35_RTC_MINUTES_MIN_ALL (M48T35_RTC_MINUTES_MIN_1|M48T35_RTC_MINUTES_MIN_10)
59
60#define M48T35_RTC_HOURS_HRS_1 0x0f
61#define M48T35_RTC_HOURS_HRS_10 0x30
62#define M48T35_RTC_HOURS_HRS_ALL (M48T35_RTC_HOURS_HRS_1|M48T35_RTC_HOURS_HRS_10)
63
64#define M48T35_RTC_DAY_DAY_1 0x03
65#define M48T35_RTC_DAY_FT 0x40
66
67#define M48T35_RTC_ALARM_OFF 0x00
68#define M48T35_RTC_WATCHDOG_OFF 0x00
69
70
71/* legacy */
72#define M48T35_RTC_SET 0x80
73#define M48T35_RTC_STOPPED 0x80
74#define M48T35_RTC_READ 0x40
75
76
77#endif