arch/blackfin/lib/post.c

   1 /*
   2  * Blackfin POST code
   3  *
   4  * Copyright (c) 2005-2011 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #include <common.h>
  10 #include <config.h>
  11 #include <post.h>
  12
  13 #include <asm/gpio.h>
  14
  15 #if CONFIG_POST & CONFIG_SYS_POST_BSPEC1
  16 int led_post_test(int flags)
  17 {
  18         unsigned leds[] = { CONFIG_POST_BSPEC1_GPIO_LEDS };
  19         int i;
  20
  21         /* First turn them all off */
  22         for (i = 0; i < ARRAY_SIZE(leds); ++i) {
  23                 if (gpio_request(leds[i], "post")) {
  24                         printf("could not request gpio %u\n", leds[i]);
  25                         continue;
  26                 }
  27                 gpio_direction_output(leds[i], 0);
  28         }
  29
  30         /* Now turn them on one by one */
  31         for (i = 0; i < ARRAY_SIZE(leds); ++i) {
  32                 printf("LED%i on", i + 1);
  33                 gpio_set_value(leds[i], 1);
  34                 udelay(1000000);
  35                 printf("\b\b\b\b\b\b\b");
  36                 gpio_free(leds[i]);
  37         }
  38
  39         return 0;
  40 }
  41 #endif
  42
  43 #if CONFIG_POST & CONFIG_SYS_POST_BSPEC2
  44 int button_post_test(int flags)
  45 {
  46         unsigned buttons[] = { CONFIG_POST_BSPEC2_GPIO_BUTTONS };
  47         unsigned int sws[] = { CONFIG_POST_BSPEC2_GPIO_NAMES };
  48         int i, delay = 5;
  49         unsigned short value = 0;
  50         int result = 0;
  51
  52         for (i = 0; i < ARRAY_SIZE(buttons); ++i) {
  53                 if (gpio_request(buttons[i], "post")) {
  54                         printf("could not request gpio %u\n", buttons[i]);
  55                         continue;
  56                 }
  57                 gpio_direction_input(buttons[i]);
  58
  59                 delay = 5;
  60                 printf("\n--------Press SW%i: %2d ", sws[i], delay);
  61                 while (delay--) {
  62                         int j;
  63                         for (j = 0; j < 100; j++) {
  64                                 value = gpio_get_value(buttons[i]);
  65                                 if (value != 0)
  66                                         break;
  67                                 udelay(10000);
  68                         }
  69                         printf("\b\b\b%2d ", delay);
  70                 }
  71                 if (value != 0)
  72                         puts("\b\bOK");
  73                 else {
  74                         result = -1;
  75                         puts("\b\bfailed");
  76                 }
  77
  78                 gpio_free(buttons[i]);
  79         }
  80
  81         puts("\n");
  82
  83         return result;
  84 }
  85 #endif