| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (C) 2021-2022 Digiteq Automotive |
| * author: Martin Tuma <martin.tuma@digiteqautomotive.com> |
| */ |
| |
| #include <linux/ioport.h> |
| #include "mgb4_regs.h" |
| |
| int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs) |
| { |
| regs->mapbase = res->start; |
| regs->mapsize = res->end - res->start; |
| |
| if (!request_mem_region(regs->mapbase, regs->mapsize, res->name)) |
| return -EINVAL; |
| regs->membase = ioremap(regs->mapbase, regs->mapsize); |
| if (!regs->membase) { |
| release_mem_region(regs->mapbase, regs->mapsize); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| void mgb4_regs_free(struct mgb4_regs *regs) |
| { |
| iounmap(regs->membase); |
| release_mem_region(regs->mapbase, regs->mapsize); |
| } |
