include/linux/ds17287rtc.h

   1 /*
   2  * ds17287rtc.h - register definitions for the ds1728[57] RTC / CMOS RAM
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * (C) 2003 Guido Guenther <agx@sigxcpu.org>
   9  */
  10 #ifndef __LINUX_DS17287RTC_H
  11 #define __LINUX_DS17287RTC_H
  12
  13 #include <linux/rtc.h>                  /* get the user-level API */
  14 #include <linux/mc146818rtc.h>
  15
  16 /* Register A */
  17 #define DS_REGA_DV2     0x40            /* countdown chain */
  18 #define DS_REGA_DV1     0x20            /* oscillator enable */
  19 #define DS_REGA_DV0     0x10            /* bank select */
  20
  21 /* bank 1 registers */
  22 #define DS_B1_MODEL     0x40            /* model number byte */
  23 #define DS_B1_SN1       0x41            /* serial number byte 1 */
  24 #define DS_B1_SN2       0x42            /* serial number byte 2 */
  25 #define DS_B1_SN3       0x43            /* serial number byte 3 */
  26 #define DS_B1_SN4       0x44            /* serial number byte 4 */
  27 #define DS_B1_SN5       0x45            /* serial number byte 5 */
  28 #define DS_B1_SN6       0x46            /* serial number byte 6 */
  29 #define DS_B1_CRC       0x47            /* CRC byte */
  30 #define DS_B1_CENTURY   0x48            /* Century byte */
  31 #define DS_B1_DALARM    0x49            /* date alarm */
  32 #define DS_B1_XCTRL4A   0x4a            /* extendec control register 4a */
  33 #define DS_B1_XCTRL4B   0x4b            /* extendec control register 4b */
  34 #define DS_B1_RTCADDR2  0x4e            /* rtc address 2 */
  35 #define DS_B1_RTCADDR3  0x4f            /* rtc address 3 */
  36 #define DS_B1_RAMLSB    0x50            /* extended ram LSB */
  37 #define DS_B1_RAMMSB    0x51            /* extended ram MSB */
  38 #define DS_B1_RAMDPORT  0x53            /* extended ram data port */
  39
  40 /* register details */
  41 /* extended control register 4a */
  42 #define DS_XCTRL4A_VRT2 0x80            /* valid ram and time */
  43 #define DS_XCTRL4A_INCR 0x40            /* increment progress status */
  44 #define DS_XCTRL4A_BME  0x20            /* burst mode enable */
  45 #define DS_XCTRL4A_PAB  0x08            /* power active bar ctrl */
  46 #define DS_XCTRL4A_RF   0x04            /* ram clear flag */
  47 #define DS_XCTRL4A_WF   0x02            /* wake up alarm flag */
  48 #define DS_XCTRL4A_KF   0x01            /* kickstart flag */
  49
  50 /* interrupt causes */
  51 #define DS_XCTRL4A_IFS  (DS_XCTRL4A_RF|DS_XCTRL4A_WF|DS_XCTRL4A_KF)
  52
  53 /* extended control register 4b */
  54 #define DS_XCTRL4B_ABE  0x80            /* auxiliary battery enable */
  55 #define DS_XCTRL4B_E32K 0x40            /* enable 32.768 kHz Output */
  56 #define DS_XCTRL4B_CS   0x20            /* crystal select */
  57 #define DS_XCTRL4B_RCE  0x10            /* ram clear enable */
  58 #define DS_XCTRL4B_PRS  0x08            /* PAB resec select */
  59 #define DS_XCTRL4B_RIE  0x04            /* ram clear interrupt enable */
  60 #define DS_XCTRL4B_WFE  0x02            /* wake up alarm interrupt enable */
  61 #define DS_XCTRL4B_KFE  0x01            /* kickstart interrupt enable */
  62
  63 /* interrupt enable bits */
  64 #define DS_XCTRL4B_IFES (DS_XCTRL4B_RIE|DS_XCTRL4B_WFE|DS_XCTRL4B_KFE)
  65
  66 #endif /* __LINUX_DS17287RTC_H */