arch/mips/emma/markeins/led.c

   1 /*
   2  *  arch/mips/emma2rh/markeins/led.c
   3  *      This file defines the led display for Mark-eins.
   4  *
   5  *  Copyright (C) NEC Electronics Corporation 2004-2006
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21 #include <linux/kernel.h>
  22 #include <linux/types.h>
  23 #include <linux/string.h>
  24 #include <asm/emma2rh/emma2rh.h>
  25
  26 const unsigned long clear = 0x20202020;
  27
  28 #define LED_BASE 0xb1400038
  29
  30 void markeins_led_clear(void)
  31 {
  32         emma2rh_out32(LED_BASE, clear);
  33         emma2rh_out32(LED_BASE + 4, clear);
  34 }
  35
  36 void markeins_led(const char *str)
  37 {
  38         int i;
  39         int len = strlen(str);
  40
  41         markeins_led_clear();
  42         if (len > 8)
  43                 len = 8;
  44
  45         if (emma2rh_in32(0xb0000800) & (0x1 << 18))
  46                 for (i = 0; i < len; i++)
  47                         emma2rh_out8(LED_BASE + i, str[i]);
  48         else
  49                 for (i = 0; i < len; i++)
  50                         emma2rh_out8(LED_BASE + (i & 4) + (3 - (i & 3)),
  51                                      str[i]);
  52 }
  53
  54 void markeins_led_hex(u32 val)
  55 {
  56         char str[10];
  57
  58         sprintf(str, "%08x", val);
  59         markeins_led(str);
  60 }