display7seg.h (1945B)
1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2/* 3 * 4 * display7seg - Driver interface for the 7-segment display 5 * present on Sun Microsystems CP1400 and CP1500 6 * 7 * Copyright (c) 2000 Eric Brower <ebrower@usa.net> 8 * 9 */ 10 11#ifndef __display7seg_h__ 12#define __display7seg_h__ 13 14#define D7S_IOC 'p' 15 16#define D7SIOCRD _IOR(D7S_IOC, 0x45, int) /* Read device state */ 17#define D7SIOCWR _IOW(D7S_IOC, 0x46, int) /* Write device state */ 18#define D7SIOCTM _IO (D7S_IOC, 0x47) /* Translate mode (FLIP)*/ 19 20/* 21 * ioctl flag definitions 22 * 23 * POINT - Toggle decimal point (0=absent 1=present) 24 * ALARM - Toggle alarm LED (0=green 1=red) 25 * FLIP - Toggle inverted mode (0=normal 1=flipped) 26 * bits 0-4 - Character displayed (see definitions below) 27 * 28 * Display segments are defined as follows, 29 * subject to D7S_FLIP register state: 30 * 31 * a 32 * --- 33 * f| |b 34 * -g- 35 * e| |c 36 * --- 37 * d 38 */ 39 40#define D7S_POINT (1 << 7) /* Decimal point*/ 41#define D7S_ALARM (1 << 6) /* Alarm LED */ 42#define D7S_FLIP (1 << 5) /* Flip display */ 43 44#define D7S_0 0x00 /* Numerals 0-9 */ 45#define D7S_1 0x01 46#define D7S_2 0x02 47#define D7S_3 0x03 48#define D7S_4 0x04 49#define D7S_5 0x05 50#define D7S_6 0x06 51#define D7S_7 0x07 52#define D7S_8 0x08 53#define D7S_9 0x09 54#define D7S_A 0x0A /* Letters A-F, H, L, P */ 55#define D7S_B 0x0B 56#define D7S_C 0x0C 57#define D7S_D 0x0D 58#define D7S_E 0x0E 59#define D7S_F 0x0F 60#define D7S_H 0x10 61#define D7S_E2 0x11 62#define D7S_L 0x12 63#define D7S_P 0x13 64#define D7S_SEGA 0x14 /* Individual segments */ 65#define D7S_SEGB 0x15 66#define D7S_SEGC 0x16 67#define D7S_SEGD 0x17 68#define D7S_SEGE 0x18 69#define D7S_SEGF 0x19 70#define D7S_SEGG 0x1A 71#define D7S_SEGABFG 0x1B /* Segment groupings */ 72#define D7S_SEGCDEG 0x1C 73#define D7S_SEGBCEF 0x1D 74#define D7S_SEGADG 0x1E 75#define D7S_BLANK 0x1F /* Clear all segments */ 76 77#define D7S_MIN_VAL 0x0 78#define D7S_MAX_VAL 0x1F 79 80#endif /* ifndef __display7seg_h__ */