| /* |
| * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <asm/io.h> |
| #include <asm/pnp_def.h> |
| |
| static void pnp_enter_conf_state(u16 dev) |
| { |
| u16 port = dev >> 8; |
| |
| outb(0x55, port); |
| } |
| |
| static void pnp_exit_conf_state(u16 dev) |
| { |
| u16 port = dev >> 8; |
| |
| outb(0xaa, port); |
| } |
| |
| void lpc47m_enable_serial(u16 dev, u16 iobase) |
| { |
| pnp_enter_conf_state(dev); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, iobase); |
| pnp_set_enable(dev, 1); |
| pnp_exit_conf_state(dev); |
| } |
