1// SPDX-License-Identifier: GPL-2.0
 2
 3/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
 4 * Copyright (C) 2019-2020 Linaro Ltd.
 5 */
 6
 7#include <linux/io.h>
 8
 9#include "ipa.h"
10#include "ipa_reg.h"
11
12int ipa_reg_init(struct ipa *ipa)
13{
14	struct device *dev = &ipa->pdev->dev;
15	struct resource *res;
16
17	/* Setup IPA register memory  */
18	res = platform_get_resource_byname(ipa->pdev, IORESOURCE_MEM,
19					   "ipa-reg");
20	if (!res) {
21		dev_err(dev, "DT error getting \"ipa-reg\" memory property\n");
22		return -ENODEV;
23	}
24
25	ipa->reg_virt = ioremap(res->start, resource_size(res));
26	if (!ipa->reg_virt) {
27		dev_err(dev, "unable to remap \"ipa-reg\" memory\n");
28		return -ENOMEM;
29	}
30	ipa->reg_addr = res->start;
31
32	return 0;
33}
34
35void ipa_reg_exit(struct ipa *ipa)
36{
37	iounmap(ipa->reg_virt);
38}