| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: display7seg.h,v 1.2 2000/08/02 06:22:35 davem Exp $ |
| 2 | * |
| 3 | * display7seg - Driver interface for the 7-segment display |
| 4 | * present on Sun Microsystems CP1400 and CP1500 |
| 5 | * |
| 6 | * Copyright (c) 2000 Eric Brower <ebrower@usa.net> |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | #ifndef __display7seg_h__ |
| 11 | #define __display7seg_h__ |
| 12 | |
| 13 | #define D7S_IOC 'p' |
| 14 | |
| 15 | #define D7SIOCRD _IOR(D7S_IOC, 0x45, int) /* Read device state */ |
| 16 | #define D7SIOCWR _IOW(D7S_IOC, 0x46, int) /* Write device state */ |
| 17 | #define D7SIOCTM _IO (D7S_IOC, 0x47) /* Translate mode (FLIP)*/ |
| 18 | |
| 19 | /* |
| 20 | * ioctl flag definitions |
| 21 | * |
| 22 | * POINT - Toggle decimal point (0=absent 1=present) |
| 23 | * ALARM - Toggle alarm LED (0=green 1=red) |
| 24 | * FLIP - Toggle inverted mode (0=normal 1=flipped) |
| 25 | * bits 0-4 - Character displayed (see definitions below) |
| 26 | * |
| 27 | * Display segments are defined as follows, |
| 28 | * subject to D7S_FLIP register state: |
| 29 | * |
| 30 | * a |
| 31 | * --- |
| 32 | * f| |b |
| 33 | * -g- |
| 34 | * e| |c |
| 35 | * --- |
| 36 | * d |
| 37 | */ |
| 38 | |
| 39 | #define D7S_POINT (1 << 7) /* Decimal point*/ |
| 40 | #define D7S_ALARM (1 << 6) /* Alarm LED */ |
| 41 | #define D7S_FLIP (1 << 5) /* Flip display */ |
| 42 | |
| 43 | #define D7S_0 0x00 /* Numerals 0-9 */ |
| 44 | #define D7S_1 0x01 |
| 45 | #define D7S_2 0x02 |
| 46 | #define D7S_3 0x03 |
| 47 | #define D7S_4 0x04 |
| 48 | #define D7S_5 0x05 |
| 49 | #define D7S_6 0x06 |
| 50 | #define D7S_7 0x07 |
| 51 | #define D7S_8 0x08 |
| 52 | #define D7S_9 0x09 |
| 53 | #define D7S_A 0x0A /* Letters A-F, H, L, P */ |
| 54 | #define D7S_B 0x0B |
| 55 | #define D7S_C 0x0C |
| 56 | #define D7S_D 0x0D |
| 57 | #define D7S_E 0x0E |
| 58 | #define D7S_F 0x0F |
| 59 | #define D7S_H 0x10 |
| 60 | #define D7S_E2 0x11 |
| 61 | #define D7S_L 0x12 |
| 62 | #define D7S_P 0x13 |
| 63 | #define D7S_SEGA 0x14 /* Individual segments */ |
| 64 | #define D7S_SEGB 0x15 |
| 65 | #define D7S_SEGC 0x16 |
| 66 | #define D7S_SEGD 0x17 |
| 67 | #define D7S_SEGE 0x18 |
| 68 | #define D7S_SEGF 0x19 |
| 69 | #define D7S_SEGG 0x1A |
| 70 | #define D7S_SEGABFG 0x1B /* Segment groupings */ |
| 71 | #define D7S_SEGCDEG 0x1C |
| 72 | #define D7S_SEGBCEF 0x1D |
| 73 | #define D7S_SEGADG 0x1E |
| 74 | #define D7S_BLANK 0x1F /* Clear all segments */ |
| 75 | |
| 76 | #define D7S_MIN_VAL 0x0 |
| 77 | #define D7S_MAX_VAL 0x1F |
| 78 | |
| 79 | #endif /* ifndef __display7seg_h__ */ |