| /* $Id: display7seg.h,v 1.2 2000/08/02 06:22:35 davem Exp $ |
| * |
| * 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__ */ |