LXR linux-old/include/asm-sparc64/display7seg.h

   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