1a2927e09SBin Meng /* 2a2927e09SBin Meng * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> 3a2927e09SBin Meng * 4a2927e09SBin Meng * SPDX-License-Identifier: GPL-2.0+ 5a2927e09SBin Meng */ 6a2927e09SBin Meng 7a2927e09SBin Meng #include <common.h> 8a2927e09SBin Meng #include <asm/io.h> 9a2927e09SBin Meng #include <asm/pnp_def.h> 10a2927e09SBin Meng 11a2927e09SBin Meng static void pnp_enter_conf_state(u16 dev) 12a2927e09SBin Meng { 13a2927e09SBin Meng u16 port = dev >> 8; 14a2927e09SBin Meng 15a2927e09SBin Meng outb(0x55, port); 16a2927e09SBin Meng } 17a2927e09SBin Meng 18a2927e09SBin Meng static void pnp_exit_conf_state(u16 dev) 19a2927e09SBin Meng { 20a2927e09SBin Meng u16 port = dev >> 8; 21a2927e09SBin Meng 22a2927e09SBin Meng outb(0xaa, port); 23a2927e09SBin Meng } 24a2927e09SBin Meng 25*19268834SBin Meng void lpc47m_enable_serial(u16 dev, u16 iobase, u8 irq) 26a2927e09SBin Meng { 27a2927e09SBin Meng pnp_enter_conf_state(dev); 28a2927e09SBin Meng pnp_set_logical_device(dev); 29a2927e09SBin Meng pnp_set_enable(dev, 0); 30a2927e09SBin Meng pnp_set_iobase(dev, PNP_IDX_IO0, iobase); 31*19268834SBin Meng pnp_set_irq(dev, PNP_IDX_IRQ0, irq); 32a2927e09SBin Meng pnp_set_enable(dev, 1); 33a2927e09SBin Meng pnp_exit_conf_state(dev); 34a2927e09SBin Meng } 35