root/arch/mips/emma/markeins/led.c

DEFINITIONS

1. markeins_led_clear
2. markeins_led
3. markeins_led_hex

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Copyright (C) NEC Electronics Corporation 2004-2006
   4  */
   5 #include <linux/kernel.h>
   6 #include <linux/types.h>
   7 #include <linux/string.h>
   8 #include <asm/emma/emma2rh.h>
   9 
  10 const unsigned long clear = 0x20202020;
  11 
  12 #define LED_BASE 0xb1400038
  13 
  14 void markeins_led_clear(void)
  15 {
  16         emma2rh_out32(LED_BASE, clear);
  17         emma2rh_out32(LED_BASE + 4, clear);
  18 }
  19 
  20 void markeins_led(const char *str)
  21 {
  22         int i;
  23         int len = strlen(str);
  24 
  25         markeins_led_clear();
  26         if (len > 8)
  27                 len = 8;
  28 
  29         if (emma2rh_in32(0xb0000800) & (0x1 << 18))
  30                 for (i = 0; i < len; i++)
  31                         emma2rh_out8(LED_BASE + i, str[i]);
  32         else
  33                 for (i = 0; i < len; i++)
  34                         emma2rh_out8(LED_BASE + (i & 4) + (3 - (i & 3)),
  35                                      str[i]);
  36 }
  37 
  38 void markeins_led_hex(u32 val)
  39 {
  40         char str[10];
  41 
  42         sprintf(str, "%08x", val);
  43         markeins_led(str);
  44 }