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1da177e4 LT |
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__ */ |