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

source/bootloader/u-boot-2020.01/board/alliedtelesis/common/gpio_hog.c

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Allied Telesis Labs
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <asm/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int gpio_hog_list(struct gpio_desc *gpiod, int max_count,
+		  const char *node_name, const char *gpio_name, int value)
+{
+	int node;
+	int count;
+	int i;
+
+	node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, node_name);
+	if (node < 0)
+		return -ENODEV;
+
+	if (!dm_gpio_is_valid(gpiod)) {
+		count =
+		    gpio_request_list_by_name_nodev(offset_to_ofnode(node),
+						    gpio_name, gpiod, max_count,
+						    GPIOD_IS_OUT);
+		if (count < 0)
+			return count;
+
+		for (i = 0; i < count; i++)
+			dm_gpio_set_value(&gpiod[i], value);
+	}
+
+	return 0;
+}