86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2010, 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
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*/
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#include <asm/io.h>
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#include <asm/arch/ep93xx.h>
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#include <config.h>
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#include <status_led.h>
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static uint8_t saved_state[2] = {CONFIG_LED_STATUS_OFF, CONFIG_LED_STATUS_OFF};
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static uint32_t gpio_pin[2] = {1 << CONFIG_LED_STATUS_GREEN,
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1 << CONFIG_LED_STATUS_RED};
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static inline void switch_LED_on(uint8_t led)
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{
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register struct gpio_regs *gpio = (struct gpio_regs *)GPIO_BASE;
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writel(readl(&gpio->pedr) | gpio_pin[led], &gpio->pedr);
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saved_state[led] = CONFIG_LED_STATUS_ON;
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}
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static inline void switch_LED_off(uint8_t led)
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{
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register struct gpio_regs *gpio = (struct gpio_regs *)GPIO_BASE;
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writel(readl(&gpio->pedr) & ~gpio_pin[led], &gpio->pedr);
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saved_state[led] = CONFIG_LED_STATUS_OFF;
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}
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void red_led_on(void)
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{
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switch_LED_on(CONFIG_LED_STATUS_RED);
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}
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void red_led_off(void)
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{
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switch_LED_off(CONFIG_LED_STATUS_RED);
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}
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void green_led_on(void)
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{
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switch_LED_on(CONFIG_LED_STATUS_GREEN);
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}
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void green_led_off(void)
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{
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switch_LED_off(CONFIG_LED_STATUS_GREEN);
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}
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void __led_init(led_id_t mask, int state)
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{
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__led_set(mask, state);
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}
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void __led_toggle(led_id_t mask)
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{
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if (CONFIG_LED_STATUS_RED == mask) {
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if (CONFIG_LED_STATUS_ON == saved_state[CONFIG_LED_STATUS_RED])
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red_led_off();
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else
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red_led_on();
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} else if (CONFIG_LED_STATUS_GREEN == mask) {
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if (CONFIG_LED_STATUS_ON ==
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saved_state[CONFIG_LED_STATUS_GREEN])
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green_led_off();
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else
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green_led_on();
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}
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}
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void __led_set(led_id_t mask, int state)
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{
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if (CONFIG_LED_STATUS_RED == mask) {
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if (CONFIG_LED_STATUS_ON == state)
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red_led_on();
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else
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red_led_off();
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} else if (CONFIG_LED_STATUS_GREEN == mask) {
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if (CONFIG_LED_STATUS_ON == state)
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green_led_on();
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else
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green_led_off();
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}
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}
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