u-boot/board/alliedtelesis/common/gpio_hog.c

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// 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;
}