59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
|
|
* Copyright (c) 2015-2016 MediaTek Inc.
|
|
* Author: Yong Wu <yong.wu@mediatek.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
#ifndef MTK_IOMMU_SMI_H
|
|
#define MTK_IOMMU_SMI_H
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/device.h>
|
|
|
|
#ifdef CONFIG_MTK_SMI
|
|
|
|
#define MTK_LARB_NR_MAX 8
|
|
|
|
#define MTK_SMI_MMU_EN(port) BIT(port)
|
|
|
|
struct mtk_smi_larb_iommu {
|
|
struct device *dev;
|
|
unsigned int mmu;
|
|
};
|
|
|
|
struct mtk_smi_iommu {
|
|
unsigned int larb_nr;
|
|
struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX];
|
|
};
|
|
|
|
/*
|
|
* 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
|