2 * BK Id: SCCS/s.m48t35.h 1.10 11/04/01 23:02:41 paulus
5 * Registers for the SGS-Thomson M48T35 Timekeeper RAM chip
7 * Registers for the SGS-Thomson M48T37 Timekeeper RAM chip
8 * The 37 is the 35 plus alarm and century thus the offsets
9 * are shifted by the extra registers.
12 #ifndef __PPC_M48T35_H
13 #define __PPC_M48T35_H
16 #define M48T35_RTC_FLAGS (-8) /* the negative regs are really T37 only */
17 #define M48T35_RTC_CENTURY (-7)
18 #define M48T35_RTC_AL_SEC (-6)
19 #define M48T35_RTC_AL_MIN (-5)
20 #define M48T35_RTC_AL_HRS (-4)
21 #define M48T35_RTC_AL_DOM (-3)
22 #define M48T35_RTC_INTERRUPT (-2)
23 #define M48T35_RTC_WATCHDOG (-1)
24 #define M48T35_RTC_CONTROL 0 /* T35 starts here */
25 #define M48T35_RTC_SECONDS 1
26 #define M48T35_RTC_MINUTES 2
27 #define M48T35_RTC_HOURS 3
28 #define M48T35_RTC_DAY 4
29 #define M48T35_RTC_DOM 5
30 #define M48T35_RTC_MONTH 6
31 #define M48T35_RTC_YEAR 7
33 /* this way help us know which bits go with which regs */
34 #define M48T35_RTC_FLAGS_BL 0x10
35 #define M48T35_RTC_FLAGS_AF 0x40
36 #define M48T35_RTC_FLAGS_WDF 0x80
38 #define M48T35_RTC_INTERRUPT_AFE 0x80
39 #define M48T35_RTC_INTERRUPT_ABE 0x20
40 #define M48T35_RTC_INTERRUPT_ALL (M48T35_RTC_INTERRUPT_AFE|M48T35_RTC_INTERRUPT_ABE)
42 #define M48T35_RTC_WATCHDOG_RB 0x03
43 #define M48T35_RTC_WATCHDOG_BMB 0x7c
44 #define M48T35_RTC_WATCHDOG_WDS 0x80
45 #define M48T35_RTC_WATCHDOG_ALL (M48T35_RTC_WATCHDOG_RB|M48T35_RTC_WATCHDOG_BMB|M48T35_RTC_W
47 #define M48T35_RTC_CONTROL_WRITE 0x80
48 #define M48T35_RTC_CONTROL_READ 0x40
49 #define M48T35_RTC_CONTROL_CAL_SIGN 0x20
50 #define M48T35_RTC_CONTROL_CAL_VALUE 0x1f
51 #define M48T35_RTC_CONTROL_LOCKED (M48T35_RTC_WRITE|M48T35_RTC_READ)
52 #define M48T35_RTC_CONTROL_CALIBRATION (M48T35_RTC_CONTROL_CAL_SIGN|M48T35_RTC_CONTROL_CAL_VALUE)
54 #define M48T35_RTC_SECONDS_SEC_1 0x0f
55 #define M48T35_RTC_SECONDS_SEC_10 0x70
56 #define M48T35_RTC_SECONDS_ST 0x80
57 #define M48T35_RTC_SECONDS_SEC_ALL (M48T35_RTC_SECONDS_SEC_1|M48T35_RTC_SECONDS_SEC_10)
59 #define M48T35_RTC_MINUTES_MIN_1 0x0f
60 #define M48T35_RTC_MINUTES_MIN_10 0x70
61 #define M48T35_RTC_MINUTES_MIN_ALL (M48T35_RTC_MINUTES_MIN_1|M48T35_RTC_MINUTES_MIN_10)
63 #define M48T35_RTC_HOURS_HRS_1 0x0f
64 #define M48T35_RTC_HOURS_HRS_10 0x30
65 #define M48T35_RTC_HOURS_HRS_ALL (M48T35_RTC_HOURS_HRS_1|M48T35_RTC_HOURS_HRS_10)
67 #define M48T35_RTC_DAY_DAY_1 0x03
68 #define M48T35_RTC_DAY_FT 0x40
70 #define M48T35_RTC_ALARM_OFF 0x00
71 #define M48T35_RTC_WATCHDOG_OFF 0x00
75 #define M48T35_RTC_SET 0x80
76 #define M48T35_RTC_STOPPED 0x80
77 #define M48T35_RTC_READ 0x40
80 /* read/write conversions */
82 #define BCD_TO_BIN(x) ((x)=((x)&15) + ((x)>>4)*10)
86 #define BIN_TO_BCD(x) ((x)=(((x)/10)<<4) + (x)%10)