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__ */ 80