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/pm_runtime.h>
 14#include <linux/types.h>
 15
 16enum rpcif_data_dir {
 17	RPCIF_NO_DATA,
 18	RPCIF_DATA_IN,
 19	RPCIF_DATA_OUT,
 20};
 21
 22struct rpcif_op {
 23	struct {
 24		u8 buswidth;
 25		u8 opcode;
 26		bool ddr;
 27	} cmd, ocmd;
 28
 29	struct {
 30		u8 nbytes;
 31		u8 buswidth;
 32		bool ddr;
 33		u64 val;
 34	} addr;
 35
 36	struct {
 37		u8 ncycles;
 38		u8 buswidth;
 39	} dummy;
 40
 41	struct {
 42		u8 nbytes;
 43		u8 buswidth;
 44		bool ddr;
 45		u32 val;
 46	} option;
 47
 48	struct {
 49		u8 buswidth;
 50		unsigned int nbytes;
 51		enum rpcif_data_dir dir;
 52		bool ddr;
 53		union {
 54			void *in;
 55			const void *out;
 56		} buf;
 57	} data;
 58};
 59
 60enum rpcif_type {
 61	RPCIF_RCAR_GEN3,
 62	RPCIF_RCAR_GEN4,
 63	RPCIF_RZ_G2L,
 64};
 65
 66struct rpcif {
 67	struct device *dev;
 68	void __iomem *base;
 69	void __iomem *dirmap;
 70	struct regmap *regmap;
 71	struct reset_control *rstc;
 72	size_t size;
 73	enum rpcif_type type;
 74	enum rpcif_data_dir dir;
 75	u8 bus_size;
 76	u8 xfer_size;
 77	void *buffer;
 78	u32 xferlen;
 79	u32 smcr;
 80	u32 smadr;
 81	u32 command;		/* DRCMR or SMCMR */
 82	u32 option;		/* DROPR or SMOPR */
 83	u32 enable;		/* DRENR or SMENR */
 84	u32 dummy;		/* DRDMCR or SMDMCR */
 85	u32 ddr;		/* DRDRENR or SMDRENR */
 86};
 87
 88int rpcif_sw_init(struct rpcif *rpc, struct device *dev);
 89int rpcif_hw_init(struct rpcif *rpc, bool hyperflash);
 90void rpcif_prepare(struct rpcif *rpc, const struct rpcif_op *op, u64 *offs,
 91		   size_t *len);
 92int rpcif_manual_xfer(struct rpcif *rpc);
 93ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf);
 94
 95static inline void rpcif_enable_rpm(struct rpcif *rpc)
 96{
 97	pm_runtime_enable(rpc->dev);
 98}
 99
100static inline void rpcif_disable_rpm(struct rpcif *rpc)
101{
102	pm_runtime_disable(rpc->dev);
103}
104
105#endif // __RENESAS_RPC_IF_H

 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/pm_runtime.h>
14#include <linux/types.h>
15
16enum rpcif_data_dir {
17	RPCIF_NO_DATA,
18	RPCIF_DATA_IN,
19	RPCIF_DATA_OUT,
20};
21
22struct rpcif_op {
23	struct {
24		u8 buswidth;
25		u8 opcode;
26		bool ddr;
27	} cmd, ocmd;
28
29	struct {
30		u8 nbytes;
31		u8 buswidth;
32		bool ddr;
33		u64 val;
34	} addr;
35
36	struct {
37		u8 ncycles;
38		u8 buswidth;
39	} dummy;
40
41	struct {
42		u8 nbytes;
43		u8 buswidth;
44		bool ddr;
45		u32 val;
46	} option;
47
48	struct {
49		u8 buswidth;
50		unsigned int nbytes;
51		enum rpcif_data_dir dir;
52		bool ddr;
53		union {
54			void *in;
55			const void *out;
56		} buf;
57	} data;
58};
59
60enum rpcif_type {
61	RPCIF_RCAR_GEN3,
62	RPCIF_RCAR_GEN4,
63	RPCIF_RZ_G2L,
64};
65
66struct rpcif {
67	struct device *dev;
 
68	void __iomem *dirmap;
 
 
69	size_t size;
 
 
 
 
 
 
 
 
 
 
 
 
 
70};
71
72int rpcif_sw_init(struct rpcif *rpc, struct device *dev);
73int rpcif_hw_init(struct device *dev, bool hyperflash);
74void rpcif_prepare(struct device *dev, const struct rpcif_op *op, u64 *offs,
75		   size_t *len);
76int rpcif_manual_xfer(struct device *dev);
77ssize_t rpcif_dirmap_read(struct device *dev, u64 offs, size_t len, void *buf);
 
 
 
 
 
 
 
 
 
 
78
79#endif // __RENESAS_RPC_IF_H