1 | /* |
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2 | * This file contains the definitions for the following real-time clocks: |
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3 | * |
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4 | * + Motorola MC146818A |
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5 | * |
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6 | * COPYRIGHT (c) 1989-1999. |
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7 | * On-Line Applications Research Corporation (OAR). |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in the file LICENSE in this distribution or at |
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11 | * http://www.rtems.com/license/LICENSE. |
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12 | * |
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13 | * $Id$ |
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14 | */ |
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15 | |
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16 | #ifndef __LIBCHIP_MC146818A_h |
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17 | #define __LIBCHIP_MC146818A_h |
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18 | |
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19 | /* |
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20 | * Register addresses within chip |
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21 | */ |
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22 | #define MC146818A_SEC 0x00 /* seconds */ |
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23 | #define MC146818A_SECALRM 0x01 /* seconds alarm */ |
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24 | #define MC146818A_MIN 0x02 /* minutes */ |
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25 | #define MC146818A_MINALRM 0x03 /* minutes alarm */ |
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26 | #define MC146818A_HRS 0x04 /* hours */ |
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27 | #define MC146818A_HRSALRM 0x05 /* hours alarm */ |
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28 | #define MC146818A_WDAY 0x06 /* week day */ |
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29 | #define MC146818A_DAY 0x07 /* day of month */ |
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30 | #define MC146818A_MONTH 0x08 /* month of year */ |
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31 | #define MC146818A_YEAR 0x09 /* month of year */ |
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32 | |
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33 | #define MC146818A_STATUSA 0x0a /* status register A */ |
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34 | #define MC146818ASA_TUP 0x80 /* time update in progress */ |
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35 | #define MC146818ASA_DIVIDER 0x20 /* divider for 32768 crystal */ |
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36 | #define MC146818ASA_1024 0x06 /* divide to 1024 Hz */ |
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37 | |
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38 | #define MC146818A_STATUSB 0x0b /* status register B */ |
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39 | #define MC146818ASB_DST 0x01 /* Daylight Savings Time */ |
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40 | #define MC146818ASB_24HR 0x02 /* 0 = 12 hours, 1 = 24 hours */ |
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41 | #define MC146818ASB_HALT 0x80 /* stop clock updates */ |
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42 | |
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43 | #define MC146818A_STATUSD 0x0d /* status register D */ |
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44 | #define MC146818ASD_PWR 0x80 /* clock lost power */ |
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45 | |
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46 | |
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47 | /* |
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48 | * Driver function table |
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49 | */ |
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50 | extern rtc_fns mc146818a_fns; |
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51 | bool mc146818a_probe( |
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52 | int minor |
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53 | ); |
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54 | |
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55 | /* |
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56 | * Default register access routines |
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57 | */ |
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58 | uint32_t mc146818a_get_register( |
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59 | uint32_t ulCtrlPort, |
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60 | uint8_t ucRegNum |
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61 | ); |
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62 | |
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63 | void mc146818a_set_register( |
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64 | uint32_t ulCtrlPort, |
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65 | uint8_t ucRegNum, |
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66 | uint32_t ucData |
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67 | ); |
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68 | |
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69 | #endif |
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70 | /* end of include file */ |
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