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/* $Id: display7seg.h,v 1.1.1.1 2004-04-15 03:00:53 phoenix 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__ */