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/*
*
* 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__ */
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