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/* SPDX-License-Identifier: GPL-2.0 */ /* * Renesas RPC-IF core driver * * Copyright (C) 2018~2019 Renesas Solutions Corp. * Copyright (C) 2019 Macronix International Co., Ltd. * Copyright (C) 2019-2020 Cogent Embedded, Inc. */ #ifndef __RENESAS_RPC_IF_H #define __RENESAS_RPC_IF_H #include <linux/pm_runtime.h> #include <linux/types.h> enum rpcif_data_dir { RPCIF_NO_DATA, RPCIF_DATA_IN, RPCIF_DATA_OUT, }; struct rpcif_op { struct { u8 buswidth; u8 opcode; bool ddr; } cmd, ocmd; struct { u8 nbytes; u8 buswidth; bool ddr; u64 val; } addr; struct { u8 ncycles; u8 buswidth; } dummy; struct { u8 nbytes; u8 buswidth; bool ddr; u32 val; } option; struct { u8 buswidth; unsigned int nbytes; enum rpcif_data_dir dir; bool ddr; union { void *in; const void *out; } buf; } data; }; enum rpcif_type { RPCIF_RCAR_GEN3, RPCIF_RCAR_GEN4, RPCIF_RZ_G2L, }; struct rpcif { struct device *dev; void __iomem *dirmap; size_t size; }; int rpcif_sw_init(struct rpcif *rpc, struct device *dev); int rpcif_hw_init(struct device *dev, bool hyperflash); void rpcif_prepare(struct device *dev, const struct rpcif_op *op, u64 *offs, size_t *len); int rpcif_manual_xfer(struct device *dev); ssize_t rpcif_dirmap_read(struct device *dev, u64 offs, size_t len, void *buf); #endif // __RENESAS_RPC_IF_H