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58 lines
1.5 KiB
58 lines
1.5 KiB
/* |
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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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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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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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#ifdef CONFIG_MTK_SMI |
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#define MTK_LARB_NR_MAX 8 |
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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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}; |
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struct mtk_smi_iommu { |
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unsigned int larb_nr; |
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struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX]; |
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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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