GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/misc/gpio_led.c

@@ -0,0 +1,107 @@
+/*
+ * Status LED driver based on GPIO access conventions of Linux
+ *
+ * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <status_led.h>
+#include <asm/gpio.h>
+
+#ifndef CONFIG_GPIO_LED_INVERTED_TABLE
+#define CONFIG_GPIO_LED_INVERTED_TABLE {}
+#endif
+
+static led_id_t gpio_led_inv[] = CONFIG_GPIO_LED_INVERTED_TABLE;
+
+static int gpio_led_gpio_value(led_id_t mask, int state)
+{
+	int i, gpio_value = (state == CONFIG_LED_STATUS_ON);
+
+	for (i = 0; i < ARRAY_SIZE(gpio_led_inv); i++) {
+		if (gpio_led_inv[i] == mask)
+			gpio_value = !gpio_value;
+	}
+
+	return gpio_value;
+}
+
+void __led_init(led_id_t mask, int state)
+{
+	int gpio_value;
+
+	if (gpio_request(mask, "gpio_led") != 0) {
+		printf("%s: failed requesting GPIO%lu!\n", __func__, mask);
+		return;
+	}
+
+	gpio_value = gpio_led_gpio_value(mask, state);
+	gpio_direction_output(mask, gpio_value);
+}
+
+void __led_set(led_id_t mask, int state)
+{
+	int gpio_value = gpio_led_gpio_value(mask, state);
+
+	gpio_set_value(mask, gpio_value);
+}
+
+void __led_toggle(led_id_t mask)
+{
+	gpio_set_value(mask, !gpio_get_value(mask));
+}
+
+#ifdef CONFIG_GPIO_LED_STUBS
+
+/* 'generic' override of colored LED stubs, to use GPIO functions instead */
+
+#ifdef CONFIG_LED_STATUS_RED
+void red_led_on(void)
+{
+	__led_set(CONFIG_LED_STATUS_RED, CONFIG_LED_STATUS_ON);
+}
+
+void red_led_off(void)
+{
+	__led_set(CONFIG_LED_STATUS_RED, CONFIG_LED_STATUS_OFF);
+}
+#endif
+
+#ifdef CONFIG_LED_STATUS_GREEN
+void green_led_on(void)
+{
+	__led_set(CONFIG_LED_STATUS_GREEN, CONFIG_LED_STATUS_ON);
+}
+
+void green_led_off(void)
+{
+	__led_set(CONFIG_LED_STATUS_GREEN, CONFIG_LED_STATUS_OFF);
+}
+#endif
+
+#ifdef CONFIG_LED_STATUS_YELLOW
+void yellow_led_on(void)
+{
+	__led_set(CONFIG_LED_STATUS_YELLOW, CONFIG_LED_STATUS_ON);
+}
+
+void yellow_led_off(void)
+{
+	__led_set(CONFIG_LED_STATUS_YELLOW, CONFIG_LED_STATUS_OFF);
+}
+#endif
+
+#ifdef CONFIG_LED_STATUS_BLUE
+void blue_led_on(void)
+{
+	__led_set(CONFIG_LED_STATUS_BLUE, CONFIG_LED_STATUS_ON);
+}
+
+void blue_led_off(void)
+{
+	__led_set(CONFIG_LED_STATUS_BLUE, CONFIG_LED_STATUS_OFF);
+}
+#endif
+
+#endif /* CONFIG_GPIO_LED_STUBS */