projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| cc8bbe1a YW |
1 | /* |
| 2 | * Copyright (c) 2015-2016 MediaTek Inc. | |
| 3 | * Author: Yong Wu <yong.wu@mediatek.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License version 2 as | |
| 7 | * published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | */ | |
| 14 | #ifndef MTK_IOMMU_SMI_H | |
| 15 | #define MTK_IOMMU_SMI_H | |
| 16 | ||
| 17 | #include <linux/bitops.h> | |
| 18 | #include <linux/device.h> | |
| 19 | ||
| 20 | #ifdef CONFIG_MTK_SMI | |
| 21 | ||
| 22 | #define MTK_LARB_NR_MAX 8 | |
| 23 | ||
| 24 | #define MTK_SMI_MMU_EN(port) BIT(port) | |
| 25 | ||
| 26 | struct mtk_smi_larb_iommu { | |
| 27 | struct device *dev; | |
| 28 | unsigned int mmu; | |
| 29 | }; | |
| 30 | ||
| 31 | struct mtk_smi_iommu { | |
| 32 | unsigned int larb_nr; | |
| 33 | struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX]; | |
| 34 | }; | |
| 35 | ||
| 36 | /* | |
| 37 | * mtk_smi_larb_get: Enable the power domain and clocks for this local arbiter. | |
| 38 | * It also initialize some basic setting(like iommu). | |
| 39 | * mtk_smi_larb_put: Disable the power domain and clocks for this local arbiter. | |
| 40 | * Both should be called in non-atomic context. | |
| 41 | * | |
| 42 | * Returns 0 if successful, negative on failure. | |
| 43 | */ | |
| 44 | int mtk_smi_larb_get(struct device *larbdev); | |
| 45 | void mtk_smi_larb_put(struct device *larbdev); | |
| 46 | ||
| 47 | #else | |
| 48 | ||
| 49 | static inline int mtk_smi_larb_get(struct device *larbdev) | |
| 50 | { | |
| 51 | return 0; | |
| 52 | } | |
| 53 | ||
| 54 | static inline void mtk_smi_larb_put(struct device *larbdev) { } | |
| 55 | ||
| 56 | #endif | |
| 57 | ||
| 58 | #endif |