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-rw-r--r--include/memory/renesas-rpc-if.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/include/memory/renesas-rpc-if.h b/include/memory/renesas-rpc-if.h
new file mode 100644
index 000000000000..9ad136682c47
--- /dev/null
+++ b/include/memory/renesas-rpc-if.h
@@ -0,0 +1,87 @@
+/* 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/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_enable_rpm(struct rpcif *rpc);
+void rpcif_disable_rpm(struct rpcif *rpc);
+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);
+
+#endif // __RENESAS_RPC_IF_H