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

source/bootloader/u-boot-2020.01/board/ti/beagle/led.c

@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2010 Texas Instruments, Inc.
+ * Jason Kridner <jkridner@beagleboard.org>
+ */
+#include <common.h>
+#include <status_led.h>
+#include <asm/arch/cpu.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+
+/* GPIO pins for the LEDs */
+#define BEAGLE_LED_USR0	150
+#define BEAGLE_LED_USR1	149
+
+#ifdef CONFIG_LED_STATUS_GREEN
+void green_led_off(void)
+{
+	__led_set(CONFIG_LED_STATUS_GREEN, 0);
+}
+
+void green_led_on(void)
+{
+	__led_set(CONFIG_LED_STATUS_GREEN, 1);
+}
+#endif
+
+static int get_led_gpio(led_id_t mask)
+{
+#ifdef CONFIG_LED_STATUS0
+	if (CONFIG_LED_STATUS_BIT & mask)
+		return BEAGLE_LED_USR0;
+#endif
+#ifdef CONFIG_LED_STATUS1
+	if (CONFIG_LED_STATUS_BIT1 & mask)
+		return BEAGLE_LED_USR1;
+#endif
+
+	return 0;
+}
+
+void __led_init (led_id_t mask, int state)
+{
+	int toggle_gpio;
+
+	toggle_gpio = get_led_gpio(mask);
+
+	if (toggle_gpio && !gpio_request(toggle_gpio, "led"))
+		__led_set(mask, state);
+}
+
+void __led_toggle (led_id_t mask)
+{
+	int state, toggle_gpio;
+
+	toggle_gpio = get_led_gpio(mask);
+	if (toggle_gpio) {
+		state = gpio_get_value(toggle_gpio);
+		gpio_direction_output(toggle_gpio, !state);
+	}
+}
+
+void __led_set (led_id_t mask, int state)
+{
+	int toggle_gpio;
+
+	toggle_gpio = get_led_gpio(mask);
+	if (toggle_gpio)
+		gpio_direction_output(toggle_gpio, state);
+}