| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 Sage Electronic Engineering, LLC |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <arch/io.h> |
| #include <device/pnp.h> |
| #include <stdint.h> |
| #include "nct5104d.h" |
| |
| #define NUVOTON_ENTRY_KEY 0x87 |
| #define NUVOTON_EXIT_KEY 0xAA |
| |
| /* Enable configuration: pass entry key '0x87' into index port dev |
| * two times. */ |
| static void pnp_enter_conf_state(pnp_devfn_t dev) |
| { |
| u16 port = dev >> 8; |
| outb(NUVOTON_ENTRY_KEY, port); |
| outb(NUVOTON_ENTRY_KEY, port); |
| } |
| |
| /* Disable configuration: pass exit key '0xAA' into index port dev. */ |
| static void pnp_exit_conf_state(pnp_devfn_t dev) |
| { |
| u16 port = dev >> 8; |
| outb(NUVOTON_EXIT_KEY, port); |
| } |
| |
| /* Route UARTD to pins 41-48 */ |
| void nct5104d_enable_uartd(pnp_devfn_t dev) |
| { |
| u8 tmp; |
| u16 port = dev >> 8; |
| pnp_enter_conf_state(dev); |
| outb(0x1c, port); |
| tmp = inb(port + 1); |
| tmp |= 0x04; |
| outb(tmp, port + 1); |
| pnp_exit_conf_state(dev); |
| } |