/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * * display7seg - Driver interface for the 7-segment display * present on Sun Microsystems CP1400 and CP1500 * * Copyright (c) 2000 Eric Brower <ebrower@usa.net> * */ #ifndef __display7seg_h__ #define __display7seg_h__ #define D7S_IOC 'p' #define D7SIOCRD _IOR(D7S_IOC, 0x45, int) /* Read device state */ #define D7SIOCWR _IOW(D7S_IOC, 0x46, int) /* Write device state */ #define D7SIOCTM _IO (D7S_IOC, 0x47) /* Translate mode (FLIP)*/ /* * ioctl flag definitions * * POINT - Toggle decimal point (0=absent 1=present) * ALARM - Toggle alarm LED (0=green 1=red) * FLIP - Toggle inverted mode (0=normal 1=flipped) * bits 0-4 - Character displayed (see definitions below) * * Display segments are defined as follows, * subject to D7S_FLIP register state: * * a * --- * f| |b * -g- * e| |c * --- * d */ #define D7S_POINT (1 << 7) /* Decimal point*/ #define D7S_ALARM (1 << 6) /* Alarm LED */ #define D7S_FLIP (1 << 5) /* Flip display */ #define D7S_0 0x00 /* Numerals 0-9 */ #define D7S_1 0x01 #define D7S_2 0x02 #define D7S_3 0x03 #define D7S_4 0x04 #define D7S_5 0x05 #define D7S_6 0x06 #define D7S_7 0x07 #define D7S_8 0x08 #define D7S_9 0x09 #define D7S_A 0x0A /* Letters A-F, H, L, P */ #define D7S_B 0x0B #define D7S_C 0x0C #define D7S_D 0x0D #define D7S_E 0x0E #define D7S_F 0x0F #define D7S_H 0x10 #define D7S_E2 0x11 #define D7S_L 0x12 #define D7S_P 0x13 #define D7S_SEGA 0x14 /* Individual segments */ #define D7S_SEGB 0x15 #define D7S_SEGC 0x16 #define D7S_SEGD 0x17 #define D7S_SEGE 0x18 #define D7S_SEGF 0x19 #define D7S_SEGG 0x1A #define D7S_SEGABFG 0x1B /* Segment groupings */ #define D7S_SEGCDEG 0x1C #define D7S_SEGBCEF 0x1D #define D7S_SEGADG 0x1E #define D7S_BLANK 0x1F /* Clear all segments */ #define D7S_MIN_VAL 0x0 #define D7S_MAX_VAL 0x1F #endif /* ifndef __display7seg_h__ */