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https://github.com/AsahiLinux/u-boot
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46 lines
981 B
C
46 lines
981 B
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2021 Mark Kettenis <kettenis@openbsd.org>
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*/
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#define LOG_CATEGORY UCLASS_IOMMU
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#include <common.h>
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#include <dm.h>
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#if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA))
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int dev_iommu_enable(struct udevice *dev)
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{
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struct ofnode_phandle_args args;
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struct udevice *dev_iommu;
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int i, count, ret = 0;
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count = dev_count_phandle_with_args(dev, "iommus",
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"#iommu-cells", 0);
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for (i = 0; i < count; i++) {
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ret = dev_read_phandle_with_args(dev, "iommus",
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"#iommu-cells", 0, i, &args);
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if (ret) {
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debug("%s: dev_read_phandle_with_args failed: %d\n",
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__func__, ret);
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return ret;
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}
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ret = uclass_get_device_by_ofnode(UCLASS_IOMMU, args.node,
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&dev_iommu);
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if (ret) {
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debug("%s: uclass_get_device_by_ofnode failed: %d\n",
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__func__, ret);
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return ret;
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}
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}
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return 0;
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}
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#endif
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UCLASS_DRIVER(iommu) = {
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.id = UCLASS_IOMMU,
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.name = "iommu",
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};
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