| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008 Arastra, Inc. |
| * |
| * 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_ops.h> |
| #include <device/pnp.h> |
| #include "i8900.h" |
| |
| static void pnp_enter_ext_func_mode(pnp_devfn_t dev) |
| { |
| u16 port = dev >> 8; |
| |
| outb(0x80, port); |
| outb(0x86, port); |
| } |
| |
| static void pnp_exit_ext_func_mode(pnp_devfn_t dev) |
| { |
| u16 port = dev >> 8; |
| |
| outb(0x68, port); |
| outb(0x08, port); |
| } |
| |
| /* Enable device interrupts, set UART_CLK predivide. */ |
| void i8900_configure_uart_clk(pnp_devfn_t dev, u8 predivide) |
| { |
| pnp_enter_ext_func_mode(dev); |
| pnp_write_config(dev, I8900_SIW_CONFIGURATION, |
| (predivide << 2) | I8900_ENABLE_SIRQ); |
| pnp_exit_ext_func_mode(dev); |
| } |
| |
| void i8900_enable_serial(pnp_devfn_t dev, u16 iobase) |
| { |
| pnp_enter_ext_func_mode(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_ext_func_mode(dev); |
| } |
| |
| void i8900_enable_wdt(pnp_devfn_t dev, u16 iobase) |
| { |
| /* Enable WDT */ |
| pnp_enter_ext_func_mode(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_ext_func_mode(dev); |
| } |