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44 lines
1004 B
44 lines
1004 B
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (c) 2015-2016 MediaTek Inc. |
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* Author: Yong Wu <[email protected]> |
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*/ |
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#ifndef MTK_IOMMU_SMI_H |
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#define MTK_IOMMU_SMI_H |
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#include <linux/bitops.h> |
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#include <linux/device.h> |
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#if IS_ENABLED(CONFIG_MTK_SMI) |
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#define MTK_SMI_MMU_EN(port) BIT(port) |
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struct mtk_smi_larb_iommu { |
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struct device *dev; |
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unsigned int mmu; |
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unsigned char bank[32]; |
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}; |
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/* |
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* mtk_smi_larb_get: Enable the power domain and clocks for this local arbiter. |
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* It also initialize some basic setting(like iommu). |
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* mtk_smi_larb_put: Disable the power domain and clocks for this local arbiter. |
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* Both should be called in non-atomic context. |
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* |
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* Returns 0 if successful, negative on failure. |
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*/ |
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int mtk_smi_larb_get(struct device *larbdev); |
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void mtk_smi_larb_put(struct device *larbdev); |
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#else |
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static inline int mtk_smi_larb_get(struct device *larbdev) |
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{ |
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return 0; |
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} |
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static inline void mtk_smi_larb_put(struct device *larbdev) { } |
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#endif |
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#endif
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