arch/sparc/include/asm/display7seg.h

   1 /*
   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__ */