arch/mips/emma/markeins/led.c

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