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