Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (c) 2015-2016 MediaTek Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Author: Yong Wu <yong.wu@mediatek.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #ifndef MTK_IOMMU_SMI_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define MTK_IOMMU_SMI_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #if IS_ENABLED(CONFIG_MTK_SMI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define MTK_SMI_MMU_EN(port)	BIT(port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct mtk_smi_larb_iommu {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	unsigned int   mmu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	unsigned char  bank[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * mtk_smi_larb_get: Enable the power domain and clocks for this local arbiter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  *                   It also initialize some basic setting(like iommu).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * mtk_smi_larb_put: Disable the power domain and clocks for this local arbiter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * Both should be called in non-atomic context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  * Returns 0 if successful, negative on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int mtk_smi_larb_get(struct device *larbdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void mtk_smi_larb_put(struct device *larbdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static inline int mtk_smi_larb_get(struct device *larbdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static inline void mtk_smi_larb_put(struct device *larbdev) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #endif