drivers/char/lcm3.c

   1 /*
   2  * Copyright (C) MOXA Inc. All rights reserved.
   3  *
   4  * This software is distributed under the terms of the
   5  * MOXA License.  See the file COPYING-MOXA for details.
   6  *
   7  * This is Moxa CPU for IVTC ODM LCM moudle WG16080A device driver.
   8  * It is from misc interface. So the device node major number is 10.
   9  * The device node minor number is following:
  10  * lcm  :       102
  11  *
  12  * There devices are mapping system memory is following:
  13  * lcm  :       0x04000000      read only, data -> LCM & control signal
  14  *      :       0x04002000      write only, LCM -> data & control signal
  15  *
  16  * History:
  17  * Date         Aurhor                  Comment
  18  * 09-02-2008   Victor Yu.              Create it.
  19  */
  20 #include <linux/config.h>
  21 #include <asm/arch/moxa.h>
  22 #include <linux/module.h>
  23 #include <linux/kernel.h>
  24 #include <linux/types.h>
  25 #include <linux/miscdevice.h>
  26 #include <linux/fcntl.h>
  27 #include <linux/init.h>
  28 #include <linux/poll.h>
  29 #include <linux/proc_fs.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/delay.h>
  32 #include <linux/rtc.h>
  33 #include <linux/timer.h>
  34 #include <linux/ioport.h>
  35
  36 #include <asm/io.h>
  37 #include <asm/uaccess.h>
  38 #include <asm/system.h>
  39 #include "moxalcm.h"
  40
  41 #define LCM_READ_ADDR           0x84002000
  42 #define LCM_WRITE_ADDR          0x84000000
  43
  44 #define MOXA_LCM_MINOR          102
  45
  46 static spinlock_t               lcm_lock= SPIN_LOCK_UNLOCKED;
  47
  48 //
  49 // LCM file operation function call
  50 //
  51 static unsigned char fnt8x8[]={
  52 0x0E,0x11,0x19,0x15,0x13,0x11,0x0E,0x00,0x04,0x06,0x04,0x04,0x04,0x04,0x1F,0x00,
  53 0x0E,0x11,0x10,0x08,0x04,0x12,0x1F,0x00,0x0E,0x11,0x10,0x0E,0x10,0x11,0x0E,0x00,
  54 0x08,0x0C,0x0A,0x09,0x1F,0x08,0x1C,0x00,0x1F,0x01,0x0F,0x10,0x10,0x11,0x0E,0x00,
  55 0x0C,0x12,0x01,0x0F,0x11,0x11,0x0E,0x00,0x1F,0x11,0x08,0x04,0x04,0x04,0x04,0x00,
  56 0x0E,0x11,0x11,0x0E,0x11,0x11,0x0E,0x00,0x0E,0x11,0x11,0x1E,0x10,0x11,0x0E,0x00,
  57 0x04,0x0A,0x11,0x11,0x1F,0x11,0x11,0x00,0x0F,0x12,0x12,0x0E,0x12,0x12,0x0F,0x00,
  58 0x0C,0x12,0x01,0x01,0x01,0x12,0x0C,0x00,0x07,0x09,0x11,0x11,0x11,0x09,0x07,0x00,
  59 0x1F,0x12,0x02,0x0E,0x02,0x12,0x1F,0x00,0x1F,0x12,0x02,0x0E,0x02,0x02,0x07,0x00,
  60 0x01,0x07,0x1F,0x7F,0x1F,0x07,0x01,0x00,0x40,0x70,0x7C,0x7F,0x7C,0x70,0x40,0x00,
  61 0x18,0x3C,0x7E,0x18,0x18,0x7E,0x3C,0x18,0x66,0x66,0x66,0x66,0x66,0x00,0x66,0x00,
  62 0xFE,0xDB,0xDB,0xDE,0xD8,0xD8,0xD8,0x00,0x7C,0xC6,0x1C,0x36,0x36,0x1C,0x33,0x1E,
  63 0x00,0x00,0x00,0x00,0x7E,0x7E,0x7E,0x00,0x18,0x3C,0x7E,0x18,0x7E,0x3C,0x18,0xFF,
  64 0x18,0x3C,0x7E,0x18,0x18,0x18,0x18,0x00,0x18,0x18,0x18,0x18,0x7E,0x3C,0x18,0x00,
  65 0x00,0x18,0x30,0x7F,0x30,0x18,0x00,0x00,0x00,0x0C,0x06,0x7F,0x06,0x0C,0x00,0x00,
  66 0x00,0x00,0x03,0x03,0x03,0x7F,0x00,0x00,0x00,0x24,0x66,0xFF,0x66,0x24,0x00,0x00,
  67 0x00,0x18,0x3C,0x7E,0xFF,0xFF,0x00,0x00,0x00,0xFF,0xFF,0x7E,0x3C,0x18,0x00,0x00,
  68 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x08,0x08,0x08,0x08,0x00,0x08,0x00,
  69 0x22,0x22,0x22,0x00,0x00,0x00,0x00,0x00,0x22,0x22,0x7F,0x22,0x7F,0x22,0x22,0x00,
  70 0x04,0x0E,0x01,0x0E,0x10,0x0F,0x04,0x00,0x43,0x23,0x10,0x08,0x04,0x62,0x61,0x00,
  71 0x0E,0x11,0x0A,0x2E,0x11,0x21,0x5E,0x00,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,
  72 0x10,0x08,0x04,0x04,0x04,0x08,0x10,0x00,0x04,0x08,0x10,0x10,0x10,0x08,0x04,0x00,
  73 0x00,0x42,0x24,0xFF,0x24,0x42,0x00,0x00,0x00,0x08,0x08,0x3E,0x08,0x08,0x00,0x00,
  74 0x00,0x00,0x00,0x00,0x00,0x08,0x08,0x04,0x00,0x00,0x00,0x1F,0x00,0x00,0x00,0x00,
  75 0x00,0x00,0x00,0x00,0x00,0x0C,0x0C,0x00,0x40,0x20,0x10,0x08,0x04,0x02,0x01,0x00,
  76 0x3E,0x61,0x51,0x49,0x45,0x43,0x3E,0x00,0x04,0x06,0x04,0x04,0x04,0x04,0x1F,0x00,
  77 0x1E,0x21,0x20,0x18,0x06,0x01,0x3F,0x00,0x1E,0x21,0x20,0x18,0x20,0x21,0x1E,0x00,
  78 0x38,0x24,0x22,0x21,0x7F,0x20,0x70,0x00,0x3F,0x01,0x1F,0x20,0x20,0x21,0x1E,0x00,
  79 0x0C,0x02,0x01,0x1F,0x21,0x21,0x1E,0x00,0x3F,0x21,0x20,0x10,0x08,0x08,0x08,0x00,
  80 0x1E,0x21,0x21,0x1E,0x21,0x21,0x1E,0x00,0x1E,0x21,0x21,0x3E,0x20,0x10,0x0E,0x00,
  81 0x00,0x04,0x04,0x00,0x00,0x04,0x04,0x00,0x00,0x04,0x04,0x00,0x00,0x04,0x04,0x02,
  82 0x08,0x04,0x02,0x01,0x02,0x04,0x08,0x00,0x00,0x00,0x1F,0x00,0x00,0x1F,0x00,0x00,
  83 0x04,0x08,0x10,0x20,0x10,0x08,0x04,0x00,0x1E,0x21,0x20,0x10,0x08,0x00,0x08,0x00,
  84 0x3E,0x41,0x41,0x41,0x39,0x01,0x1E,0x00,0x04,0x0A,0x11,0x11,0x1F,0x11,0x11,0x00,
  85 0x1F,0x22,0x22,0x1E,0x22,0x22,0x1F,0x00,0x1C,0x22,0x01,0x01,0x01,0x22,0x1C,0x00,
  86 0x1F,0x22,0x42,0x42,0x42,0x22,0x1F,0x00,0x7F,0x01,0x01,0x0F,0x01,0x01,0x7F,0x00,
  87 0x7F,0x01,0x01,0x0F,0x01,0x01,0x01,0x00,0x3C,0x42,0x01,0x01,0x61,0x42,0x3C,0x00,
  88 0x21,0x21,0x21,0x3F,0x21,0x21,0x21,0x00,0x0E,0x04,0x04,0x04,0x04,0x04,0x0E,0x00,
  89 0x70,0x20,0x20,0x20,0x21,0x21,0x1E,0x00,0x42,0x42,0x22,0x1E,0x22,0x42,0x42,0x00,
  90 0x02,0x02,0x02,0x02,0x02,0x02,0x7E,0x00,0x41,0x63,0x55,0x49,0x41,0x41,0x41,0x00,
  91 0x41,0x43,0x45,0x49,0x51,0x61,0x41,0x00,0x1C,0x22,0x41,0x41,0x41,0x22,0x1C,0x00,
  92 0x3E,0x42,0x42,0x3E,0x02,0x02,0x02,0x00,0x1E,0x21,0x21,0x21,0x21,0x1E,0x30,0x00,
  93 0x1F,0x21,0x21,0x1F,0x11,0x21,0x21,0x00,0x1E,0x21,0x01,0x1E,0x20,0x21,0x1E,0x00,
  94 0x7F,0x08,0x08,0x08,0x08,0x08,0x08,0x00,0x21,0x21,0x21,0x21,0x21,0x21,0x1E,0x00,
  95 0x21,0x21,0x21,0x21,0x21,0x12,0x0C,0x00,0x41,0x41,0x41,0x49,0x55,0x63,0x41,0x00,
  96 0x41,0x22,0x14,0x08,0x14,0x22,0x41,0x00,0x11,0x11,0x11,0x0E,0x04,0x04,0x04,0x00,
  97 0x7F,0x20,0x10,0x08,0x04,0x02,0x7F,0x00,0x1E,0x02,0x02,0x02,0x02,0x02,0x1E,0x00,
  98 0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x00,0x1E,0x10,0x10,0x10,0x10,0x10,0x1E,0x00,
  99 0x08,0x14,0x22,0x41,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,
 100 0x08,0x08,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1E,0x20,0x3E,0x21,0x6E,0x00,
 101 0x02,0x02,0x02,0x3E,0x42,0x42,0x3E,0x00,0x00,0x00,0x1E,0x21,0x01,0x21,0x1E,0x00,
 102 0x20,0x20,0x20,0x3E,0x21,0x21,0x1E,0x00,0x00,0x00,0x1E,0x21,0x1F,0x01,0x1E,0x00,
 103 0x1C,0x22,0x02,0x0F,0x02,0x02,0x02,0x00,0x00,0x00,0x1E,0x21,0x21,0x3E,0x20,0x1F,
 104 0x02,0x02,0x02,0x3E,0x42,0x42,0x42,0x00,0x08,0x00,0x08,0x08,0x08,0x08,0x08,0x00,
 105 0x20,0x00,0x20,0x20,0x20,0x21,0x21,0x1E,0x01,0x01,0x21,0x11,0x0F,0x11,0x21,0x00,
 106 0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x00,0x00,0x00,0x22,0x55,0x49,0x41,0x41,0x00,
 107 0x00,0x00,0x1F,0x21,0x21,0x21,0x21,0x00,0x00,0x00,0x1E,0x21,0x21,0x21,0x1E,0x00,
 108 0x00,0x00,0x1F,0x21,0x21,0x1F,0x01,0x01,0x00,0x00,0x3E,0x21,0x21,0x3E,0x20,0x20,
 109 0x00,0x00,0x1D,0x23,0x01,0x01,0x01,0x00,0x00,0x00,0x3E,0x01,0x1E,0x20,0x1F,0x00,
 110 0x08,0x08,0x1C,0x08,0x08,0x08,0x08,0x00,0x00,0x00,0x21,0x21,0x21,0x21,0x1E,0x00,
 111 0x00,0x00,0x21,0x21,0x21,0x12,0x0C,0x00,0x00,0x00,0x41,0x41,0x49,0x55,0x22,0x00,
 112 0x00,0x00,0x22,0x14,0x08,0x14,0x22,0x00,0x00,0x00,0x21,0x21,0x21,0x3E,0x20,0x1F,
 113 0x00,0x00,0x3F,0x10,0x08,0x04,0x3F,0x00,0x30,0x08,0x08,0x06,0x08,0x08,0x30,0x00,
 114 0x08,0x08,0x08,0x00,0x08,0x08,0x08,0x00,0x03,0x04,0x04,0x18,0x04,0x04,0x03,0x00,
 115 0x6E,0x3B,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x14,0x22,0x41,0x41,0x7F,0x00,
 116 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 117 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 118 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 119 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 120 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 121 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 122 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 123 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 124 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 125 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 126 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 127 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 128 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 129 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 130 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 131 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 132 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 133 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 134 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 135 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 136 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 137 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 138 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 139 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 140 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 141 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 142 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 143 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 144 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 145 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 146 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 147 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 148 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 149 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 150 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 151 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 152 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 153 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 154 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 155 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 156 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 157 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 158 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 159 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 160 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 161 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 162 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 163 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 164 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 165 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 166 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 167 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 168 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 169 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 170 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 171 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 172 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 173 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 174 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 175 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 176 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 177 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 178 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 179 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 180 };
 181 static int              lcmx;   // now character position
 182 static int              lcmy;   // now dot position
 183
 184 // LCM register number
 185 #define LCM_REG_MODE_CONTROL            0       // mode control
 186 #define LCM_CMD_DISPLAY_BIT             0x20
 187 #define LCM_CMD_MASTER_BIT              0x10
 188 #define LCM_CMD_BLINK_BIT               0x08
 189 #define LCM_CMD_CURSOR_BIT              0x04
 190 #define LCM_CMD_MODE_BIT                0x02
 191 #define LCM_CMD_CG_BIT                  0x01    // external CG, 0 for built-in CG
 192 #define LCM_CMD_GRAPHIC_MODE            0x32    // setting the graphic mode
 193 #define LCM_CMD_TEXT_MODE               0x30    // setting the charactic mode
 194 #define LCM_CMD_DISPLAY_ON              0x32
 195 #define LCM_CMD_DISPLAY_OFF             0x12
 196 #define LCM_CMD_CURSOR_ON               0x34
 197 #define LCM_CMD_CURSOR_OFF              0x30
 198 #define LCM_CMD_CHAR_BLINK              0x38
 199 #define LCM_CMD_CURSOR_BLINK            0x3c
 200
 201 #define LCM_REG_SET_CH_PITCH            1       // setting the character pitch
 202 #define LCM_H_PITCH_6                   0x05
 203 #define LCM_H_PITCH_7                   0x06
 204 #define LCM_H_PITCH_8                   0x07
 205
 206 #define LCM_REG_SET_NO_CH               2       // setting the number of characters
 207 #define LCM_REG_SET_TIME_DIV            3       // setting the time division number
 208 #define LCM_REG_SET_CUR_POS             4       // setting the cursor position
 209 #define LCM_REG_SET_DIS_LADDR           8       // setting the display start lower address
 210 #define LCM_REG_SET_DIS_UADDR           9       // setting the display start upper address
 211 #define LCM_REG_SET_CUR_LADDR           10      // setting the cursor (lower) address
 212 #define LCM_REG_SET_CUR_UADDR           11      // setting the cursor (upper) address
 213 #define LCM_REG_W_DIS_DATA              12      // writing display data
 214 #define LCM_REG_R_DIS_DATA              13      // reading display data
 215
 216 #define LCM_REG_BIT_CLEAR               14      // bit clear
 217 #define LCM_BIT_CLEAR_MASK              0x07
 218
 219 #define LCM_REG_BIT_SET                 15      // bit set
 220 #define LCM_BIT_SET                     0x07
 221
 222 #define LCM_BUSY_FLAG                   0x80    // when you read this bit,
 223                                                 // you must set RS & R/W are both high
 224
 225 // following LCM control
 226 #define LCM_DATA                0
 227 #define LCM_CMD                 (1<<8)
 228 #define LCM_READ                (1<<9)
 229 #define LCM_WRITE               0
 230 #define LCM_EBIT_ON             (1<<10)
 231 #define LCM_EBIT_OFF            0
 232 #define LCM_BACK_LIGHT_ON       0
 233 #define LCM_BACK_LIGHT_OFF      (1<<11)
 234 #define LCM_DISPLAY_OFF         0
 235 #define LCM_DISPLAY_ON          (1<<13)
 236 #define LCM_CS_OFF              (1<<12) // chip enable "active" L
 237 #define LCM_CS_ON               0       // chip enable "active" L
 238 #define LCM_WRITE_ENABLE        0
 239 #define LCM_READ_ENABLE         (1<<14)
 240
 241 #define LCM_MAX_X_DOTS          160     // max x dots (colum)
 242 #define LCM_MAX_Y_DOTS          80      // max y dots (row)
 243 #define LCM_X_DOTS              8       // x dots for each character
 244 #define LCM_Y_DOTS              8       // y dots for each character
 245 #define LCM_X_DOTS_MASK         (LCM_X_DOTS-1)
 246 #define LCM_Y_DOTS_MASK         (LCM_Y_DOTS-1)
 247 #define LCM_X_DOTS_SHIFT        3
 248 #define LCM_Y_DOTS_SHIFT        3
 249 #define LCM_MAX_X               (LCM_MAX_X_DOTS/LCM_X_DOTS) // max x char.
 250 #define LCM_MAX_Y               (LCM_MAX_Y_DOTS/LCM_Y_DOTS) // max y char.
 251
 252 static unsigned char    lcm_pix_buffer[LCM_MAX_X][LCM_MAX_Y_DOTS];
 253 static u16              lcm_ctrl_data=LCM_DISPLAY_ON|LCM_BACK_LIGHT_ON;
 254 static int              lcm_auto_scroll_flag=1;
 255 static int              lcm_reverse_flag=0;
 256 static unsigned short   lcm_start_ram_address=0;        // embedded on LCM module RAM
 257
 258 typedef struct lcm_xy {
 259         int     x;      // 0 - LCM_MAX_X
 260         int     y;      // 0 - LCM_MAX_Y
 261 } lcm_xy_t;
 262
 263 #define LCM_NOT_LOCK_INT
 264 #if 0
 265 #define LCM_delay()     udelay(1)
 266 #else
 267 #define LCM_delay()
 268 #endif
 269
 270 static void     LCM_write_register(u16 regno, u16 data)
 271 {
 272 #ifndef LCM_NOT_LOCK_INT
 273         unsigned long   flags;
 274
 275         save_flags(flags);
 276         cli();
 277 #endif
 278         spin_lock(&lcm_lock);
 279
 280         // first write the register number
 281         //outw(lcm_ctrl_data|LCM_EBIT_OFF|LCM_READ|LCM_CMD|LCM_READ_ENABLE|LCM_CS_ON, LCM_WRITE_ADDR);
 282         outw(lcm_ctrl_data|LCM_EBIT_OFF|LCM_WRITE|LCM_CMD|LCM_WRITE_ENABLE|LCM_CS_ON|regno, LCM_WRITE_ADDR);
 283         LCM_delay();
 284         outw(lcm_ctrl_data|LCM_EBIT_ON|LCM_WRITE|LCM_CMD|LCM_WRITE_ENABLE|LCM_CS_ON|regno, LCM_WRITE_ADDR);
 285         LCM_delay();
 286         outw(lcm_ctrl_data|LCM_EBIT_OFF|LCM_WRITE|LCM_CMD|LCM_WRITE_ENABLE|LCM_CS_ON|regno, LCM_WRITE_ADDR);
 287         //LCM_delay();
 288         //outw(lcm_ctrl_data|LCM_EBIT_OFF|LCM_READ|LCM_CMD|LCM_READ_ENABLE|LCM_CS_OFF, LCM_WRITE_ADDR);
 289
 290         // second write the data for this register
 291         //outw(lcm_ctrl_data|LCM_EBIT_OFF|LCM_READ|LCM_DATA|LCM_READ_ENABLE|LCM_CS_ON, LCM_WRITE_ADDR);
 292         //LCM_delay();
 293         outw(lcm_ctrl_data|LCM_EBIT_OFF|LCM_WRITE|LCM_DATA|LCM_WRITE_ENABLE|LCM_CS_ON|data, LCM_WRITE_ADDR);
 294         LCM_delay();
 295         outw(lcm_ctrl_data|LCM_EBIT_ON|LCM_WRITE|LCM_DATA|LCM_WRITE_ENABLE|LCM_CS_ON|data, LCM_WRITE_ADDR);
 296         LCM_delay();
 297         outw(lcm_ctrl_data|LCM_EBIT_OFF|LCM_WRITE|LCM_DATA|LCM_WRITE_ENABLE|LCM_CS_ON|data, LCM_WRITE_ADDR);
 298         //LCM_delay();
 299         outw(lcm_ctrl_data|LCM_EBIT_OFF|LCM_READ|LCM_DATA|LCM_READ_ENABLE|LCM_CS_OFF, LCM_WRITE_ADDR);
 300
 301         spin_unlock(&lcm_lock);
 302 #ifndef LCM_NOT_LOCK_INT
 303         restore_flags(flags);
 304 #endif
 305 }
 306
 307 static void lcm_up_one_line(void)
 308 {
 309         int     x, y;
 310
 311         // first up one line for lcm buffer
 312         spin_lock(&lcm_lock);
 313         for ( y=1; y<LCM_MAX_Y; y++ ) {
 314                 for ( x=0; x<LCM_MAX_X; x++ ) {
 315                         memcpy(&lcm_pix_buffer[x][(y-1)*LCM_Y_DOTS], &lcm_pix_buffer[x][y*LCM_Y_DOTS], LCM_Y_DOTS);
 316                 }
 317         }
 318         for ( x=0; x<LCM_MAX_X; x++ ) {
 319                 if ( lcm_reverse_flag )
 320                         memset(&lcm_pix_buffer[x][(LCM_MAX_Y-1)*LCM_Y_DOTS], 1, LCM_Y_DOTS);
 321                 else
 322                         memset(&lcm_pix_buffer[x][(LCM_MAX_Y-1)*LCM_Y_DOTS], 0, LCM_Y_DOTS);
 323         }
 324         spin_unlock(&lcm_lock);
 325
 326         // set cursor address to be start ram address
 327         LCM_write_register(LCM_REG_SET_CUR_LADDR, lcm_start_ram_address & 0xff);
 328         LCM_write_register(LCM_REG_SET_CUR_UADDR, (lcm_start_ram_address >> 8) & 0xff);
 329
 330         // second redisplay up one line on LCM
 331         LCM_write_register(LCM_REG_MODE_CONTROL, LCM_CMD_DISPLAY_OFF);
 332         for ( y=0; y<LCM_MAX_Y_DOTS; y++ ) {
 333                 for ( x=0; x<LCM_MAX_X; x++ ) {
 334                         LCM_write_register(LCM_REG_W_DIS_DATA, lcm_pix_buffer[x][y]);
 335                 }
 336         }
 337
 338         LCM_write_register(LCM_REG_MODE_CONTROL, LCM_CMD_DISPLAY_ON);
 339         spin_lock(&lcm_lock);
 340         lcmx = 0;
 341         lcmy = (LCM_MAX_Y - 1) * LCM_Y_DOTS;
 342         spin_unlock(&lcm_lock);
 343 }
 344
 345 static void LCM_printf_char(unsigned char ch)
 346 {
 347         int     index, i, j, k;
 348
 349         if ( ch == '\n' ) {
 350                 spin_lock(&lcm_lock);
 351                 for ( i=lcmx; i<LCM_MAX_X; i++ ) {
 352                         if ( lcm_reverse_flag )
 353                                 memset(&lcm_pix_buffer[i][lcmy], 1, LCM_Y_DOTS);
 354                         else
 355                                 memset(&lcm_pix_buffer[i][lcmy], 0, LCM_Y_DOTS);
 356                 }
 357                 lcmx = 0;
 358                 lcmy += LCM_Y_DOTS;
 359                 if ( lcmy >= LCM_MAX_Y_DOTS ) {
 360                         if ( lcm_auto_scroll_flag ) {
 361                                 lcmy = (LCM_MAX_Y - 1) * LCM_Y_DOTS;
 362                                 spin_unlock(&lcm_lock);
 363                                 lcm_up_one_line();
 364                                 return;
 365                         } else {
 366                                 lcmy = 0;
 367                         }
 368                 }
 369                 spin_unlock(&lcm_lock);
 370                 return;
 371         }
 372
 373         index = ch * LCM_X_DOTS;
 374         for ( i=0, k=lcmy; i<LCM_Y_DOTS; i++, index++, k++ ) {
 375                 spin_lock(&lcm_lock);
 376                 if ( lcm_reverse_flag )
 377                         lcm_pix_buffer[lcmx][k] = ~fnt8x8[index];
 378                 else
 379                         lcm_pix_buffer[lcmx][k] = fnt8x8[index];
 380                 spin_unlock(&lcm_lock);
 381                 j = lcmx + (k * LCM_MAX_X) + lcm_start_ram_address;
 382                 LCM_write_register(LCM_REG_SET_CUR_LADDR, j & 0xff);
 383                 LCM_write_register(LCM_REG_SET_CUR_UADDR, (j >> 8) & 0xff);
 384                 LCM_write_register(LCM_REG_W_DIS_DATA, lcm_pix_buffer[lcmx][k]);
 385         }
 386
 387         spin_lock(&lcm_lock);
 388         lcmx++;
 389         if ( lcmx >= LCM_MAX_X ) {
 390                 lcmx = 0;
 391                 lcmy += LCM_Y_DOTS;
 392                 if ( lcmy >= LCM_MAX_Y_DOTS ) {
 393                         if ( lcm_auto_scroll_flag ) {
 394                                 lcmy = (LCM_MAX_Y - 1) * LCM_Y_DOTS;
 395                                 spin_unlock(&lcm_lock);
 396                                 lcm_up_one_line();
 397                                 return;
 398                         } else {
 399                                 lcmy = 0;
 400                         }
 401                 }
 402         }
 403         spin_unlock(&lcm_lock);
 404 }
 405
 406 static void LCM_clear_line(void)
 407 {
 408         int     x, i;
 409
 410         for ( x=0; x<LCM_MAX_X; x++ ) {
 411                 spin_lock(&lcm_lock);
 412                 if ( lcm_reverse_flag )
 413                         memset(&lcm_pix_buffer[x][lcmy], 1, LCM_Y_DOTS);
 414                 else
 415                         memset(&lcm_pix_buffer[x][lcmy], 0, LCM_Y_DOTS);
 416                 spin_unlock(&lcm_lock);
 417         }
 418
 419         i = lcmy * LCM_MAX_X + lcm_start_ram_address;
 420         LCM_write_register(LCM_REG_SET_CUR_LADDR, i & 0xff);
 421         LCM_write_register(LCM_REG_SET_CUR_UADDR, (i >> 8) & 0xff);
 422         for ( i=0; i<LCM_Y_DOTS; i++ ) {
 423                 for ( x=0; x<LCM_MAX_X; x++ ) {
 424                         LCM_write_register(LCM_REG_W_DIS_DATA, lcm_pix_buffer[x][lcmy+i]);
 425                 }
 426         }
 427
 428         spin_lock(&lcm_lock);
 429         lcmx = 0;
 430         spin_unlock(&lcm_lock);
 431 }
 432
 433 static void LCM_cls(void)
 434 {
 435         int     x, y;
 436
 437         LCM_write_register(LCM_REG_MODE_CONTROL, LCM_CMD_DISPLAY_OFF);
 438
 439         // set cursor address to be 0
 440         LCM_write_register(LCM_REG_SET_CUR_LADDR, lcm_start_ram_address & 0xff);
 441         LCM_write_register(LCM_REG_SET_CUR_UADDR, (lcm_start_ram_address >> 8) & 0xff);
 442
 443         for ( y=0; y<LCM_MAX_Y_DOTS; y++ ) {
 444                 // clear LCM hardware
 445                 for ( x=0; x<LCM_MAX_X; x++ ) {
 446                         spin_lock(&lcm_lock);
 447                         if ( lcm_reverse_flag )
 448                                 lcm_pix_buffer[x][y] = 0xff;
 449                         else
 450                                 lcm_pix_buffer[x][y] = 0;
 451                         spin_unlock(&lcm_lock);
 452                         if ( lcm_reverse_flag ) {
 453                                 LCM_write_register(LCM_REG_W_DIS_DATA, 0xff);
 454                         } else {
 455                                 LCM_write_register(LCM_REG_W_DIS_DATA, 0);
 456                         }
 457                 }
 458         }
 459         LCM_write_register(LCM_REG_MODE_CONTROL, LCM_CMD_DISPLAY_ON);
 460
 461         LCM_write_register(LCM_REG_SET_CUR_LADDR, lcm_start_ram_address & 0xff);
 462         LCM_write_register(LCM_REG_SET_CUR_UADDR, (lcm_start_ram_address >> 8) & 0xff);
 463
 464         spin_lock(&lcm_lock);
 465         lcmx = lcmy = 0;
 466         spin_unlock(&lcm_lock);
 467 }
 468
 469 /*
 470  * I don't know why cannot malloc memory from kernel.
 471  * 03-10-2004   Victor Yu.
 472  */
 473 #define USE_WRITE_BUFFER
 474 #ifdef USE_WRITE_BUFFER
 475 static  char    write_buffer[LCM_MAX_X * LCM_MAX_Y];
 476 #endif
 477 static ssize_t lcm_write(struct file * filp, const char * buf, size_t count, loff_t *ppos)
 478 {
 479 #ifndef USE_WRITE_BUFFER
 480         char    *ptr;
 481 #endif
 482         int     i;
 483
 484         if ( count == 0 )
 485                 return 0;
 486 #ifdef USE_WRITE_BUFFER
 487         if ( count > (LCM_MAX_X * LCM_MAX_Y) )
 488                 count = LCM_MAX_X * LCM_MAX_Y;
 489         if ( copy_from_user(write_buffer, buf, count) ) {
 490                 return -EFAULT;
 491         }
 492         for ( i=0; i<count; i++ )
 493                 LCM_printf_char(write_buffer[i]);
 494 #else
 495         ptr = kmalloc(count, GFP_KERNEL);
 496         if ( ptr == NULL )
 497                 return -ENOMEM;
 498         if ( copy_from_user(ptr, buf, count) ) {
 499                 kfree(ptr);
 500                 return -EFAULT;
 501         }
 502         for ( i=0; i<count; i++ )
 503                 LCM_printf_char(*ptr++);
 504         kfree(ptr);
 505 #endif
 506         return count;
 507 }
 508
 509 static int lcm_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
 510 {
 511         lcm_xy_t                pos;
 512         static unsigned char    user_data;
 513
 514         switch ( cmd ) {
 515         case IOCTL_LCM_PIX_ON :
 516         case IOCTL_LCM_PIX_OFF :
 517         {
 518                 unsigned char   v, mask;
 519                 int             i, x;
 520
 521                 if ( copy_from_user(&pos, (void *)arg, sizeof(pos)) )
 522                         return -EFAULT;
 523                 if ( pos.x < 0 || pos.x >= LCM_MAX_X_DOTS || pos.y < 0 || pos.y >= LCM_MAX_Y_DOTS )
 524                         return -EINVAL;
 525                 spin_lock(&lcm_lock);
 526                 x = pos.x >> LCM_X_DOTS_SHIFT;
 527                 v = lcm_pix_buffer[x][pos.y];
 528                 mask = 1 << (pos.x & LCM_X_DOTS_MASK);
 529                 if ( cmd == IOCTL_LCM_PIX_ON )
 530                         v |= mask;
 531                 else
 532                         v &= ~mask;
 533                 lcm_pix_buffer[x][pos.y] = v;
 534                 spin_unlock(&lcm_lock);
 535                 i = (pos.y * LCM_MAX_X) + x + lcm_start_ram_address;
 536                 LCM_write_register(LCM_REG_SET_CUR_LADDR, i & 0xff);
 537                 LCM_write_register(LCM_REG_SET_CUR_UADDR, (i >> 8) & 0xff);
 538                 LCM_write_register(LCM_REG_W_DIS_DATA, lcm_pix_buffer[x][pos.y]);
 539                 break;
 540         }
 541         case IOCTL_LCM_GOTO_XY :
 542                 if ( copy_from_user(&pos, (void *)arg, sizeof(pos)) )
 543                         return -EFAULT;
 544                 if ( pos.x < 0 || pos.x >= LCM_MAX_X || pos.y < 0 || pos.y >= LCM_MAX_Y )
 545                         return -EINVAL;
 546                 spin_lock(&lcm_lock);
 547                 lcmx = pos.x;
 548                 lcmy = pos.y * LCM_Y_DOTS;
 549                 spin_unlock(&lcm_lock);
 550                 break;
 551         case IOCTL_LCM_CLS :
 552                 LCM_cls();
 553                 break;
 554         case IOCTL_LCM_CLEAN_LINE :
 555                 LCM_clear_line();
 556                 break;
 557         case IOCTL_LCM_GET_XY :
 558                 spin_lock(&lcm_lock);
 559                 pos.x = lcmx;
 560                 pos.y = lcmy / LCM_Y_DOTS;
 561                 spin_unlock(&lcm_lock);
 562                 if ( copy_to_user((void *)arg, &pos,sizeof(pos)) )
 563                         return -EFAULT;
 564                 break;
 565         case IOCTL_LCM_BACK_LIGHT_ON :
 566                 spin_lock(&lcm_lock);
 567                 lcm_ctrl_data &= ~LCM_BACK_LIGHT_OFF;
 568                 outw(lcm_ctrl_data, LCM_WRITE_ADDR);
 569                 spin_unlock(&lcm_lock);
 570                 break;
 571         case IOCTL_LCM_BACK_LIGHT_OFF :
 572                 spin_lock(&lcm_lock);
 573                 lcm_ctrl_data |= LCM_BACK_LIGHT_OFF;
 574                 outw(lcm_ctrl_data, LCM_WRITE_ADDR);
 575                 spin_unlock(&lcm_lock);
 576                 break;
 577         case IOCTL_LCM_AUTO_SCROLL_ON :
 578                 spin_lock(&lcm_lock);
 579                 lcm_auto_scroll_flag = 1;
 580                 spin_unlock(&lcm_lock);
 581                 break;
 582         case IOCTL_LCM_AUTO_SCROLL_OFF :
 583                 spin_lock(&lcm_lock);
 584                 lcm_auto_scroll_flag = 0;
 585                 spin_unlock(&lcm_lock);
 586                 break;
 587         case IOCTL_LCM_REVERSE_ON :
 588                 spin_lock(&lcm_lock);
 589                 lcm_reverse_flag = 1;
 590                 spin_unlock(&lcm_lock);
 591                 break;
 592         case IOCTL_LCM_REVERSE_OFF :
 593                 spin_lock(&lcm_lock);
 594                 lcm_reverse_flag = 0;
 595                 spin_unlock(&lcm_lock);
 596                 break;
 597         case IOCTL_LCM_SAVE_BYTE :
 598                 if ( copy_from_user(&user_data, (void *)arg, sizeof(user_data)) )
 599                         return -EFAULT;
 600                 break;
 601         case IOCTL_LCM_WRITE_BYTE :
 602                 {
 603                 int             i, x;
 604                 if ( copy_from_user(&pos, (void *)arg, sizeof(pos)) )
 605                         return -EFAULT;
 606                 if ( pos.x < 0 || pos.x >= LCM_MAX_X_DOTS || pos.y < 0 || pos.y >= LCM_MAX_Y_DOTS )
 607                         return -EINVAL;
 608                 spin_lock(&lcm_lock);
 609                 x = pos.x >> LCM_X_DOTS_SHIFT;
 610                 lcm_pix_buffer[x][pos.y] = user_data;
 611                 spin_unlock(&lcm_lock);
 612                 i = (pos.y * LCM_MAX_X) + x + lcm_start_ram_address;
 613                 LCM_write_register(LCM_REG_SET_CUR_LADDR, i & 0xff);
 614                 LCM_write_register(LCM_REG_SET_CUR_UADDR, (i >> 8) & 0xff);
 615                 LCM_write_register(LCM_REG_W_DIS_DATA, lcm_pix_buffer[x][pos.y]);
 616                 break;
 617                 }
 618         case IOCTL_LCM_DISPLAY_OFF :
 619                 LCM_write_register(LCM_REG_MODE_CONTROL, LCM_CMD_DISPLAY_OFF);
 620                 break;
 621         case IOCTL_LCM_DISPLAY_ON :
 622                 LCM_write_register(LCM_REG_MODE_CONTROL, LCM_CMD_DISPLAY_ON);
 623                 break;
 624         default:
 625                 return -EINVAL;
 626         }
 627
 628         return 0;
 629 }
 630
 631 static int lcm_open(struct inode *inode, struct file *file)
 632 {
 633         if ( MINOR(inode->i_rdev) == MOXA_LCM_MINOR )
 634                 return 0;
 635         return -ENODEV;
 636 }
 637
 638 static int lcm_release(struct inode *inode, struct file *file)
 639 {
 640         return 0;
 641 }
 642
 643 static struct file_operations lcm_fops = {
 644         owner:THIS_MODULE,
 645         llseek:NULL,
 646         write:lcm_write,
 647         ioctl:lcm_ioctl,
 648         open:lcm_open,
 649         release:lcm_release,
 650 };
 651 static struct miscdevice lcm_dev = {
 652         MOXA_LCM_MINOR,
 653         "lcm",
 654         &lcm_fops
 655 };
 656
 657 #if 1   // add by Victor Yu. 04-03-2007
 658 extern int      lcm_module_flag;
 659 #endif
 660 static void __exit ivtc_lcm3_exit(void)
 661 {
 662         misc_deregister(&lcm_dev);
 663         lcm_module_flag = 0;
 664 }
 665
 666 static int __init ivtc_lcm3_init(void)
 667 {
 668         printk("Moxa CPU misc: Register LCM module WG16080A misc ver1.0 ");
 669         if ( lcm_module_flag ) {
 670                 printk("fail !\nThe other type LCM module device driver has loaded.\n");
 671                 return -ENOMEM;
 672         }
 673         if ( misc_register(&lcm_dev) ) {
 674                 printk("fail !\n");
 675                 return -ENOMEM;
 676         }
 677         lcm_module_flag = 1;
 678         printk("OK.\n");
 679
 680         // setting the LCM to be graphic mode
 681         LCM_write_register(LCM_REG_MODE_CONTROL, LCM_CMD_GRAPHIC_MODE);
 682         LCM_write_register(LCM_REG_SET_CH_PITCH, 0x77);
 683         LCM_write_register(LCM_REG_SET_NO_CH, LCM_MAX_X-1);
 684         LCM_write_register(LCM_REG_SET_TIME_DIV, LCM_MAX_Y_DOTS-1);
 685
 686         // setting the start address is from 0
 687         LCM_write_register(LCM_REG_SET_DIS_LADDR, lcm_start_ram_address & 0xff);
 688         LCM_write_register(LCM_REG_SET_DIS_UADDR, (lcm_start_ram_address >> 8) & 0xff);
 689         LCM_write_register(LCM_REG_SET_CUR_LADDR, lcm_start_ram_address & 0xff);
 690         LCM_write_register(LCM_REG_SET_CUR_UADDR, (lcm_start_ram_address >> 8) & 0xff);
 691
 692         LCM_cls();
 693         return 0;
 694 }
 695
 696 module_init(ivtc_lcm3_init);
 697 module_exit(ivtc_lcm3_exit);
 698
 699 MODULE_AUTHOR("Victor Yu");
 700 MODULE_LICENSE("GPL");