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
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