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path: root/drivers/net/ipa/ipa_reg.c
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// SPDX-License-Identifier: GPL-2.0

/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
 * Copyright (C) 2019-2020 Linaro Ltd.
 */

#include <linux/io.h>

#include "ipa.h"
#include "ipa_reg.h"

int ipa_reg_init(struct ipa *ipa)
{
	struct device *dev = &ipa->pdev->dev;
	struct resource *res;

	/* Setup IPA register memory  */
	res = platform_get_resource_byname(ipa->pdev, IORESOURCE_MEM,
					   "ipa-reg");
	if (!res) {
		dev_err(dev, "DT error getting \"ipa-reg\" memory property\n");
		return -ENODEV;
	}

	ipa->reg_virt = ioremap(res->start, resource_size(res));
	if (!ipa->reg_virt) {
		dev_err(dev, "unable to remap \"ipa-reg\" memory\n");
		return -ENOMEM;
	}
	ipa->reg_addr = res->start;

	return 0;
}

void ipa_reg_exit(struct ipa *ipa)
{
	iounmap(ipa->reg_virt);
}