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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
60struct rpcif {
61 struct device *dev;
62 void __iomem *base;
63 void __iomem *dirmap;
64 struct regmap *regmap;
65 struct reset_control *rstc;
66 size_t size;
67 enum rpcif_data_dir dir;
68 u8 bus_size;
69 void *buffer;
70 u32 xferlen;
71 u32 smcr;
72 u32 smadr;
73 u32 command;
74 u32 option;
75 u32 enable;
76 u32 dummy;
77 u32 ddr;
78};
79
80int rpcif_sw_init(struct rpcif *rpc, struct device *dev);
81void rpcif_hw_init(struct rpcif *rpc, bool hyperflash);
82void rpcif_prepare(struct rpcif *rpc, const struct rpcif_op *op, u64 *offs,
83 size_t *len);
84int rpcif_manual_xfer(struct rpcif *rpc);
85ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf);
86
87static inline void rpcif_enable_rpm(struct rpcif *rpc)
88{
89 pm_runtime_enable(rpc->dev);
90}
91
92static inline void rpcif_disable_rpm(struct rpcif *rpc)
93{
94 pm_runtime_disable(rpc->dev);
95}
96
97#endif
98