git.sur5r.net Git - u-boot/blob - arch/arm/cpu/arm920t/ep93xx/led.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2010, 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
   4  */
   5
   6 #include <asm/io.h>
   7 #include <asm/arch/ep93xx.h>
   8 #include <config.h>
   9 #include <status_led.h>
  10
  11 static uint8_t saved_state[2] = {CONFIG_LED_STATUS_OFF, CONFIG_LED_STATUS_OFF};
  12 static uint32_t gpio_pin[2] = {1 << CONFIG_LED_STATUS_GREEN,
  13                                1 << CONFIG_LED_STATUS_RED};
  14
  15 static inline void switch_LED_on(uint8_t led)
  16 {
  17         register struct gpio_regs *gpio = (struct gpio_regs *)GPIO_BASE;
  18
  19         writel(readl(&gpio->pedr) | gpio_pin[led], &gpio->pedr);
  20         saved_state[led] = CONFIG_LED_STATUS_ON;
  21 }
  22
  23 static inline void switch_LED_off(uint8_t led)
  24 {
  25         register struct gpio_regs *gpio = (struct gpio_regs *)GPIO_BASE;
  26
  27         writel(readl(&gpio->pedr) & ~gpio_pin[led], &gpio->pedr);
  28         saved_state[led] = CONFIG_LED_STATUS_OFF;
  29 }
  30
  31 void red_led_on(void)
  32 {
  33         switch_LED_on(CONFIG_LED_STATUS_RED);
  34 }
  35
  36 void red_led_off(void)
  37 {
  38         switch_LED_off(CONFIG_LED_STATUS_RED);
  39 }
  40
  41 void green_led_on(void)
  42 {
  43         switch_LED_on(CONFIG_LED_STATUS_GREEN);
  44 }
  45
  46 void green_led_off(void)
  47 {
  48         switch_LED_off(CONFIG_LED_STATUS_GREEN);
  49 }
  50
  51 void __led_init(led_id_t mask, int state)
  52 {
  53         __led_set(mask, state);
  54 }
  55
  56 void __led_toggle(led_id_t mask)
  57 {
  58         if (CONFIG_LED_STATUS_RED == mask) {
  59                 if (CONFIG_LED_STATUS_ON == saved_state[CONFIG_LED_STATUS_RED])
  60                         red_led_off();
  61                 else
  62                         red_led_on();
  63         } else if (CONFIG_LED_STATUS_GREEN == mask) {
  64                 if (CONFIG_LED_STATUS_ON ==
  65                     saved_state[CONFIG_LED_STATUS_GREEN])
  66                         green_led_off();
  67                 else
  68                         green_led_on();
  69         }
  70 }
  71
  72 void __led_set(led_id_t mask, int state)
  73 {
  74         if (CONFIG_LED_STATUS_RED == mask) {
  75                 if (CONFIG_LED_STATUS_ON == state)
  76                         red_led_on();
  77                 else
  78                         red_led_off();
  79         } else if (CONFIG_LED_STATUS_GREEN == mask) {
  80                 if (CONFIG_LED_STATUS_ON == state)
  81                         green_led_on();
  82                 else
  83                         green_led_off();
  84         }
  85 }