| Sergei Shtylyov | ca7d8b9 | 2020-06-16 23:03:48 +0300 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Renesas RPC-IF core driver |
| 4 | * |
| 5 | * Copyright (C) 2018~2019 Renesas Solutions Corp. |
| 6 | * Copyright (C) 2019 Macronix International Co., Ltd. |
| 7 | * Copyright (C) 2019-2020 Cogent Embedded, Inc. |
| 8 | */ |
| 9 | |
| 10 | #ifndef __RENESAS_RPC_IF_H |
| 11 | #define __RENESAS_RPC_IF_H |
| 12 | |
| 13 | #include <linux/types.h> |
| 14 | |
| 15 | enum rpcif_data_dir { |
| 16 | RPCIF_NO_DATA, |
| 17 | RPCIF_DATA_IN, |
| 18 | RPCIF_DATA_OUT, |
| 19 | }; |
| 20 | |
| 21 | struct rpcif_op { |
| 22 | struct { |
| 23 | u8 buswidth; |
| 24 | u8 opcode; |
| 25 | bool ddr; |
| 26 | } cmd, ocmd; |
| 27 | |
| 28 | struct { |
| 29 | u8 nbytes; |
| 30 | u8 buswidth; |
| 31 | bool ddr; |
| 32 | u64 val; |
| 33 | } addr; |
| 34 | |
| 35 | struct { |
| 36 | u8 ncycles; |
| 37 | u8 buswidth; |
| 38 | } dummy; |
| 39 | |
| 40 | struct { |
| 41 | u8 nbytes; |
| 42 | u8 buswidth; |
| 43 | bool ddr; |
| 44 | u32 val; |
| 45 | } option; |
| 46 | |
| 47 | struct { |
| 48 | u8 buswidth; |
| 49 | unsigned int nbytes; |
| 50 | enum rpcif_data_dir dir; |
| 51 | bool ddr; |
| 52 | union { |
| 53 | void *in; |
| 54 | const void *out; |
| 55 | } buf; |
| 56 | } data; |
| 57 | }; |
| 58 | |
| 59 | struct rpcif { |
| 60 | struct device *dev; |
| 61 | void __iomem *dirmap; |
| 62 | struct regmap *regmap; |
| 63 | struct reset_control *rstc; |
| 64 | size_t size; |
| 65 | enum rpcif_data_dir dir; |
| 66 | u8 bus_size; |
| 67 | void *buffer; |
| 68 | u32 xferlen; |
| 69 | u32 smcr; |
| 70 | u32 smadr; |
| 71 | u32 command; /* DRCMR or SMCMR */ |
| 72 | u32 option; /* DROPR or SMOPR */ |
| 73 | u32 enable; /* DRENR or SMENR */ |
| 74 | u32 dummy; /* DRDMCR or SMDMCR */ |
| 75 | u32 ddr; /* DRDRENR or SMDRENR */ |
| 76 | }; |
| 77 | |
| 78 | int rpcif_sw_init(struct rpcif *rpc, struct device *dev); |
| 79 | void rpcif_hw_init(struct rpcif *rpc, bool hyperflash); |
| 80 | void rpcif_enable_rpm(struct rpcif *rpc); |
| 81 | void rpcif_disable_rpm(struct rpcif *rpc); |
| 82 | void rpcif_prepare(struct rpcif *rpc, const struct rpcif_op *op, u64 *offs, |
| 83 | size_t *len); |
| 84 | int rpcif_manual_xfer(struct rpcif *rpc); |
| 85 | ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf); |
| 86 | |
| 87 | #endif // __RENESAS_RPC_IF_H |