1 // SPDX-License-Identifier: GPL-2.0
3  * Linux driver for RPC-IF HyperFlash
5  * Copyright (C) 2019-2020 Cogent Embedded, Inc.
18 #include <memory/renesas-rpc-if.h>
21 	struct rpcif rpc;  member
46 static void rpcif_hb_prepare_read(struct rpcif *rpc, void *to,  in rpcif_hb_prepare_read()  argument
59 	rpcif_prepare(rpc->dev, &op, NULL, NULL);  in rpcif_hb_prepare_read()
62 static void rpcif_hb_prepare_write(struct rpcif *rpc, unsigned long to,  in rpcif_hb_prepare_write()  argument
73 	rpcif_prepare(rpc->dev, &op, NULL, NULL);  in rpcif_hb_prepare_write()
82 	rpcif_hb_prepare_read(&hyperbus->rpc, &data, addr, 2);  in rpcif_hb_read16()
84 	rpcif_manual_xfer(hyperbus->rpc.dev);  in rpcif_hb_read16()
95 	rpcif_hb_prepare_write(&hyperbus->rpc, addr, &data, 2);  in rpcif_hb_write16()
97 	rpcif_manual_xfer(hyperbus->rpc.dev);  in rpcif_hb_write16()
106 	rpcif_hb_prepare_read(&hyperbus->rpc, to, from, len);  in rpcif_hb_copy_from()
108 	rpcif_dirmap_read(hyperbus->rpc.dev, from, len, to);  in rpcif_hb_copy_from()
119 	struct device *dev = &pdev->dev;  in rpcif_hb_probe()
124 	if (!hyperbus)  in rpcif_hb_probe()
125 		return -ENOMEM;  in rpcif_hb_probe()
127 	error = rpcif_sw_init(&hyperbus->rpc, pdev->dev.parent);  in rpcif_hb_probe()
128 	if (error)  in rpcif_hb_probe()
133 	pm_runtime_enable(hyperbus->rpc.dev);  in rpcif_hb_probe()
135 	error = rpcif_hw_init(hyperbus->rpc.dev, true);  in rpcif_hb_probe()
136 	if (error)  in rpcif_hb_probe()
139 	hyperbus->hbdev.map.size = hyperbus->rpc.size;  in rpcif_hb_probe()
140 	hyperbus->hbdev.map.virt = hyperbus->rpc.dirmap;  in rpcif_hb_probe()
142 	hyperbus->ctlr.dev = dev;  in rpcif_hb_probe()
143 	hyperbus->ctlr.ops = &rpcif_hb_ops;  in rpcif_hb_probe()
144 	hyperbus->hbdev.ctlr = &hyperbus->ctlr;  in rpcif_hb_probe()
145 	hyperbus->hbdev.np = of_get_next_child(pdev->dev.parent->of_node, NULL);  in rpcif_hb_probe()
146 	error = hyperbus_register_device(&hyperbus->hbdev);  in rpcif_hb_probe()
147 	if (error)  in rpcif_hb_probe()
153 	pm_runtime_disable(hyperbus->rpc.dev);  in rpcif_hb_probe()
161 	hyperbus_unregister_device(&hyperbus->hbdev);  in rpcif_hb_remove()
163 	pm_runtime_disable(hyperbus->rpc.dev);  in rpcif_hb_remove()
170 		.name	= "rpc-if-hyperflash",
176 MODULE_DESCRIPTION("Renesas RPC-IF HyperFlash driver");