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 /* read/write conversions */ 78 #ifndef BCD_TO_BIN 79 #define BCD_TO_BIN(x) ((x)=((x)&15) + ((x)>>4)*10) 80 #endif 81 82 #ifndef BIN_TO_BCD 83 #define BIN_TO_BCD(x) ((x)=(((x)/10)<<4) + (x)%10) 84 #endif 85 86 #endif 87