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kernel/linux-rt-4.4.41/arch/mips/emma/markeins/led.c 1.47 KB
5113f6f70   김현기   kernel add
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  /*
   *  Copyright (C) NEC Electronics Corporation 2004-2006
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  #include <linux/kernel.h>
  #include <linux/types.h>
  #include <linux/string.h>
  #include <asm/emma/emma2rh.h>
  
  const unsigned long clear = 0x20202020;
  
  #define LED_BASE 0xb1400038
  
  void markeins_led_clear(void)
  {
  	emma2rh_out32(LED_BASE, clear);
  	emma2rh_out32(LED_BASE + 4, clear);
  }
  
  void markeins_led(const char *str)
  {
  	int i;
  	int len = strlen(str);
  
  	markeins_led_clear();
  	if (len > 8)
  		len = 8;
  
  	if (emma2rh_in32(0xb0000800) & (0x1 << 18))
  		for (i = 0; i < len; i++)
  			emma2rh_out8(LED_BASE + i, str[i]);
  	else
  		for (i = 0; i < len; i++)
  			emma2rh_out8(LED_BASE + (i & 4) + (3 - (i & 3)),
  				     str[i]);
  }
  
  void markeins_led_hex(u32 val)
  {
  	char str[10];
  
  	sprintf(str, "%08x", val);
  	markeins_led(str);
  }