[mirror_ubuntu-jammy-kernel.git] / include / soc / mediatek / smi.h

/* 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>

#ifdef CONFIG_MTK_SMI

#define MTK_LARB_NR_MAX		16

#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
Commit	Line	Data
1802d0be	1	/* SPDX-License-Identifier: GPL-2.0-only */
cc8bbe1a YW	2	/*
	3	* Copyright (c) 2015-2016 MediaTek Inc.
	4	* Author: Yong Wu <yong.wu@mediatek.com>
cc8bbe1a YW	5	*/
	6	#ifndef MTK_IOMMU_SMI_H
	7	#define MTK_IOMMU_SMI_H
	8
	9	#include <linux/bitops.h>
	10	#include <linux/device.h>
	11
	12	#ifdef CONFIG_MTK_SMI
	13
e6dec923	14	#define MTK_LARB_NR_MAX 16
cc8bbe1a YW	15
	16	#define MTK_SMI_MMU_EN(port) BIT(port)
	17
	18	struct mtk_smi_larb_iommu {
	19	struct device *dev;
	20	unsigned int mmu;
	21	};
	22
	23	struct mtk_smi_iommu {
	24	unsigned int larb_nr;
	25	struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX];
	26	};
	27
	28	/*
	29	* mtk_smi_larb_get: Enable the power domain and clocks for this local arbiter.
	30	* It also initialize some basic setting(like iommu).
	31	* mtk_smi_larb_put: Disable the power domain and clocks for this local arbiter.
	32	* Both should be called in non-atomic context.
	33	*
	34	* Returns 0 if successful, negative on failure.
	35	*/
	36	int mtk_smi_larb_get(struct device *larbdev);
	37	void mtk_smi_larb_put(struct device *larbdev);
	38
	39	#else
	40
	41	static inline int mtk_smi_larb_get(struct device *larbdev)
	42	{
	43	return 0;
	44	}
	45
	46	static inline void mtk_smi_larb_put(struct device *larbdev) { }
	47
	48	#endif
	49
	50	#endif