LXR uboot/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
  11static uint8_t saved_state[2] = {CONFIG_LED_STATUS_OFF, CONFIG_LED_STATUS_OFF};
  12static uint32_t gpio_pin[2] = {1 << CONFIG_LED_STATUS_GREEN,
  13                               1 << CONFIG_LED_STATUS_RED};
  14
  15static 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
  23static 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
  31void red_led_on(void)
  32{
  33        switch_LED_on(CONFIG_LED_STATUS_RED);
  34}
  35
  36void red_led_off(void)
  37{
  38        switch_LED_off(CONFIG_LED_STATUS_RED);
  39}
  40
  41void green_led_on(void)
  42{
  43        switch_LED_on(CONFIG_LED_STATUS_GREEN);
  44}
  45
  46void green_led_off(void)
  47{
  48        switch_LED_off(CONFIG_LED_STATUS_GREEN);
  49}
  50
  51void __led_init(led_id_t mask, int state)
  52{
  53        __led_set(mask, state);
  54}
  55
  56void __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
  72void __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}
  86