/* | |
* 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); | |
} |