1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2015-2016 MediaTek Inc.
4 * Author: Yong Wu <yong.wu@mediatek.com>
6 #ifndef MTK_IOMMU_SMI_H
7 #define MTK_IOMMU_SMI_H
9 #include <linux/bitops.h>
10 #include <linux/device.h>
12 #if IS_ENABLED(CONFIG_MTK_SMI)
14 #define MTK_SMI_MMU_EN(port) BIT(port)
16 struct mtk_smi_larb_iommu {
19 unsigned char bank[32];
23 * mtk_smi_larb_get: Enable the power domain and clocks for this local arbiter.
24 * It also initialize some basic setting(like iommu).
25 * mtk_smi_larb_put: Disable the power domain and clocks for this local arbiter.
26 * Both should be called in non-atomic context.
28 * Returns 0 if successful, negative on failure.
30 int mtk_smi_larb_get(struct device *larbdev);
31 void mtk_smi_larb_put(struct device *larbdev);
35 static inline int mtk_smi_larb_get(struct device *larbdev)
40 static inline void mtk_smi_larb_put(struct device *larbdev) { }