Alex Elder | cdf2e94 | 2020-03-05 22:28:17 -0600 | [diff] [blame] | 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 | |
| 12 | int 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 | |
| 35 | void ipa_reg_exit(struct ipa *ipa) |
| 36 | { |
| 37 | iounmap(ipa->reg_virt); |
| 38 | } |