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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;
};
struct rpcif {
struct device *dev;
void __iomem *dirmap;
struct regmap *regmap;
struct reset_control *rstc;
size_t size;
enum rpcif_data_dir dir;
u8 bus_size;
void *buffer;
u32 xferlen;
u32 smcr;
u32 smadr;
u32 command; /* DRCMR or SMCMR */
u32 option; /* DROPR or SMOPR */
u32 enable; /* DRENR or SMENR */
u32 dummy; /* DRDMCR or SMDMCR */
u32 ddr; /* DRDRENR or SMDRENR */
};
int rpcif_sw_init(struct rpcif *rpc, struct device *dev);
void rpcif_hw_init(struct rpcif *rpc, bool hyperflash);
void rpcif_prepare(struct rpcif *rpc, const struct rpcif_op *op, u64 *offs,
size_t *len);
int rpcif_manual_xfer(struct rpcif *rpc);
ssize_t rpcif_dirmap_read(struct rpcif *rpc, u64 offs, size_t len, void *buf);
static inline void rpcif_enable_rpm(struct rpcif *rpc)
{
pm_runtime_enable(rpc->dev);
}
static inline void rpcif_disable_rpm(struct rpcif *rpc)
{
pm_runtime_disable(rpc->dev);
}
#endif // __RENESAS_RPC_IF_H