Subversion Repositories or1k

/*

 *  Registers for the SGS-Thomson M48T35 Timekeeper RAM chip

 *  and

 *  Registers for the SGS-Thomson M48T37 Timekeeper RAM chip

 *  The 37 is the 35 plus alarm and century thus the offsets

 *  are shifted by the extra registers.

 */

#ifndef __PPC_M48T35_H

#define __PPC_M48T35_H

/* RTC offsets */

#define M48T35_RTC_FLAGS        (-8)    /* the negative regs are really T37 only */

#define M48T35_RTC_CENTURY      (-7)

#define M48T35_RTC_AL_SEC       (-6)

#define M48T35_RTC_AL_MIN       (-5)

#define M48T35_RTC_AL_HRS       (-4)

#define M48T35_RTC_AL_DOM       (-3)

#define M48T35_RTC_INTERRUPT    (-2)

#define M48T35_RTC_WATCHDOG     (-1)

#define M48T35_RTC_CONTROL      0        /* T35 starts here */

#define M48T35_RTC_SECONDS      1

#define M48T35_RTC_MINUTES      2

#define M48T35_RTC_HOURS        3

#define M48T35_RTC_DAY          4

#define M48T35_RTC_DOM          5

#define M48T35_RTC_MONTH        6

#define M48T35_RTC_YEAR         7

/* this way help us know which bits go with which regs */

#define M48T35_RTC_FLAGS_BL           0x10

#define M48T35_RTC_FLAGS_AF           0x40

#define M48T35_RTC_FLAGS_WDF          0x80

#define M48T35_RTC_INTERRUPT_AFE       0x80

#define M48T35_RTC_INTERRUPT_ABE       0x20

#define M48T35_RTC_INTERRUPT_ALL       (M48T35_RTC_INTERRUPT_AFE|M48T35_RTC_INTERRUPT_ABE)

#define M48T35_RTC_WATCHDOG_RB         0x03

#define M48T35_RTC_WATCHDOG_BMB        0x7c

#define M48T35_RTC_WATCHDOG_WDS        0x80

#define M48T35_RTC_WATCHDOG_ALL        (M48T35_RTC_WATCHDOG_RB|M48T35_RTC_WATCHDOG_BMB|M48T35_RTC_W

#define M48T35_RTC_CONTROL_WRITE       0x80

#define M48T35_RTC_CONTROL_READ        0x40

#define M48T35_RTC_CONTROL_CAL_SIGN    0x20

#define M48T35_RTC_CONTROL_CAL_VALUE   0x1f

#define M48T35_RTC_CONTROL_LOCKED      (M48T35_RTC_WRITE|M48T35_RTC_READ)

#define M48T35_RTC_CONTROL_CALIBRATION (M48T35_RTC_CONTROL_CAL_SIGN|M48T35_RTC_CONTROL_CAL_VALUE)

#define M48T35_RTC_SECONDS_SEC_1       0x0f

#define M48T35_RTC_SECONDS_SEC_10      0x70

#define M48T35_RTC_SECONDS_ST          0x80

#define M48T35_RTC_SECONDS_SEC_ALL     (M48T35_RTC_SECONDS_SEC_1|M48T35_RTC_SECONDS_SEC_10)

#define M48T35_RTC_MINUTES_MIN_1       0x0f

#define M48T35_RTC_MINUTES_MIN_10      0x70

#define M48T35_RTC_MINUTES_MIN_ALL     (M48T35_RTC_MINUTES_MIN_1|M48T35_RTC_MINUTES_MIN_10)

#define M48T35_RTC_HOURS_HRS_1         0x0f

#define M48T35_RTC_HOURS_HRS_10        0x30

#define M48T35_RTC_HOURS_HRS_ALL       (M48T35_RTC_HOURS_HRS_1|M48T35_RTC_HOURS_HRS_10)

#define M48T35_RTC_DAY_DAY_1           0x03

#define M48T35_RTC_DAY_FT              0x40

#define M48T35_RTC_ALARM_OFF           0x00

#define M48T35_RTC_WATCHDOG_OFF        0x00

/* legacy */

#define M48T35_RTC_SET      0x80

#define M48T35_RTC_STOPPED  0x80

#define M48T35_RTC_READ     0x40

/* read/write conversions */

#ifndef BCD_TO_BIN

#define BCD_TO_BIN(x)   ((x)=((x)&15) + ((x)>>4)*10)

#endif

#ifndef BIN_TO_BCD

#define BIN_TO_BCD(x)   ((x)=(((x)/10)<<4) + (x)%10)

#endif

#endif