1 // SPDX-License-Identifier: GPL-2.0
3 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
4  * Copyright (C) 2019-2024 Linaro Ltd.
10 #include "ipa.h"
13 /* Is this register ID valid for the current IPA version? */
14 static bool ipa_reg_id_valid(struct ipa *ipa, enum ipa_reg_id reg_id)  in ipa_reg_id_valid()  argument
16 	enum ipa_version version = ipa->version;  in ipa_reg_id_valid()
102 const struct reg *ipa_reg(struct ipa *ipa, enum ipa_reg_id reg_id)  in ipa_reg()  argument
104 	if (WARN(!ipa_reg_id_valid(ipa, reg_id), "invalid reg %u\n", reg_id))  in ipa_reg()
107 	return reg(ipa->regs, reg_id);  in ipa_reg()
136 int ipa_reg_init(struct ipa *ipa, struct platform_device *pdev)  in ipa_reg_init()  argument
138 	struct device *dev = &pdev->dev;  in ipa_reg_init()
142 	regs = ipa_regs(ipa->version);  in ipa_reg_init()
144 		return -EINVAL;  in ipa_reg_init()
146 	if (WARN_ON(regs->reg_count > IPA_REG_ID_COUNT))  in ipa_reg_init()
147 		return -EINVAL;  in ipa_reg_init()
149 	/* Setup IPA register memory  */  in ipa_reg_init()
150 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ipa-reg");  in ipa_reg_init()
152 		dev_err(dev, "DT error getting \"ipa-reg\" memory property\n");  in ipa_reg_init()
153 		return -ENODEV;  in ipa_reg_init()
156 	ipa->reg_virt = ioremap(res->start, resource_size(res));  in ipa_reg_init()
157 	if (!ipa->reg_virt) {  in ipa_reg_init()
158 		dev_err(dev, "unable to remap \"ipa-reg\" memory\n");  in ipa_reg_init()
159 		return -ENOMEM;  in ipa_reg_init()
161 	ipa->regs = regs;  in ipa_reg_init()
166 void ipa_reg_exit(struct ipa *ipa)  in ipa_reg_exit()  argument
168 	iounmap(ipa->reg_virt);  in ipa_reg_exit()