board/eukrea/cpu9260/led.c

   1 /*
   2  * Copyright (c) 2009 Wind River Systems, Inc.
   3  * Tom Rix <Tom.Rix@windriver.com>
   4  * (C) Copyright 2009
   5  * Eric Benard <eric@eukrea.com>
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <status_led.h>
  28 #include <asm/arch/at91sam9260.h>
  29 #include <asm/arch/at91_pmc.h>
  30 #include <asm/arch/gpio.h>
  31 #include <asm/arch/io.h>
  32
  33 static unsigned int saved_state[4] = {STATUS_LED_OFF, STATUS_LED_OFF,
  34                 STATUS_LED_OFF, STATUS_LED_OFF};
  35
  36 void coloured_LED_init(void)
  37 {
  38         /* Enable clock */
  39         at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
  40
  41         at91_set_gpio_output(CONFIG_RED_LED, 1);
  42         at91_set_gpio_output(CONFIG_GREEN_LED, 1);
  43         at91_set_gpio_output(CONFIG_YELLOW_LED, 1);
  44         at91_set_gpio_output(CONFIG_BLUE_LED, 1);
  45
  46         at91_set_gpio_value(CONFIG_RED_LED, 1);
  47         at91_set_gpio_value(CONFIG_GREEN_LED, 1);
  48         at91_set_gpio_value(CONFIG_YELLOW_LED, 1);
  49         at91_set_gpio_value(CONFIG_BLUE_LED, 1);
  50 }
  51
  52 void red_LED_off(void)
  53 {
  54         at91_set_gpio_value(CONFIG_RED_LED, 1);
  55         saved_state[STATUS_LED_RED] = STATUS_LED_OFF;
  56 }
  57
  58 void green_LED_off(void)
  59 {
  60         at91_set_gpio_value(CONFIG_GREEN_LED, 1);
  61         saved_state[STATUS_LED_GREEN] = STATUS_LED_OFF;
  62 }
  63
  64 void yellow_LED_off(void)
  65 {
  66         at91_set_gpio_value(CONFIG_YELLOW_LED, 1);
  67         saved_state[STATUS_LED_YELLOW] = STATUS_LED_OFF;
  68 }
  69
  70 void blue_LED_off(void)
  71 {
  72         at91_set_gpio_value(CONFIG_BLUE_LED, 1);
  73         saved_state[STATUS_LED_BLUE] = STATUS_LED_OFF;
  74 }
  75
  76 void red_LED_on(void)
  77 {
  78         at91_set_gpio_value(CONFIG_RED_LED, 0);
  79         saved_state[STATUS_LED_RED] = STATUS_LED_ON;
  80 }
  81
  82 void green_LED_on(void)
  83 {
  84         at91_set_gpio_value(CONFIG_GREEN_LED, 0);
  85         saved_state[STATUS_LED_GREEN] = STATUS_LED_ON;
  86 }
  87
  88 void yellow_LED_on(void)
  89 {
  90         at91_set_gpio_value(CONFIG_YELLOW_LED, 0);
  91         saved_state[STATUS_LED_YELLOW] = STATUS_LED_ON;
  92 }
  93
  94 void blue_LED_on(void)
  95 {
  96         at91_set_gpio_value(CONFIG_BLUE_LED, 0);
  97         saved_state[STATUS_LED_BLUE] = STATUS_LED_ON;
  98 }
  99
 100 void __led_init(led_id_t mask, int state)
 101 {
 102         __led_set(mask, state);
 103 }
 104
 105 void __led_toggle(led_id_t mask)
 106 {
 107         if (STATUS_LED_BLUE == mask) {
 108                 if (STATUS_LED_ON == saved_state[STATUS_LED_BLUE])
 109                         blue_LED_off();
 110                 else
 111                         blue_LED_on();
 112         } else if (STATUS_LED_RED == mask) {
 113                 if (STATUS_LED_ON == saved_state[STATUS_LED_RED])
 114                         red_LED_off();
 115                 else
 116                         red_LED_on();
 117         } else if (STATUS_LED_GREEN == mask) {
 118                 if (STATUS_LED_ON == saved_state[STATUS_LED_GREEN])
 119                         green_LED_off();
 120                 else
 121                         green_LED_on();
 122         } else if (STATUS_LED_YELLOW == mask) {
 123                 if (STATUS_LED_ON == saved_state[STATUS_LED_YELLOW])
 124                         yellow_LED_off();
 125                 else
 126                         yellow_LED_on();
 127         }
 128 }
 129
 130 void __led_set(led_id_t mask, int state)
 131 {
 132         if (STATUS_LED_BLUE == mask) {
 133                 if (STATUS_LED_ON == state)
 134                         blue_LED_on();
 135                 else
 136                         blue_LED_off();
 137         } else if (STATUS_LED_RED == mask) {
 138                 if (STATUS_LED_ON == state)
 139                         red_LED_on();
 140                 else
 141                         red_LED_off();
 142         } else if (STATUS_LED_GREEN == mask) {
 143                 if (STATUS_LED_ON == state)
 144                         green_LED_on();
 145                 else
 146                         green_LED_off();
 147         } else if (STATUS_LED_YELLOW == mask) {
 148                 if (STATUS_LED_ON == state)
 149                         yellow_LED_on();
 150                 else
 151                         yellow_LED_off();
 152         }
 153 }