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);
}