| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2000 AG Electronics Ltd. |
| * Copyright (C) 2003-2004 Linux Networx |
| * Copyright (C) 2004 Tyan |
| * Copyright (C) 2010 Win Enterprises (anishp@win-ent.com) |
| * |
| * 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 "w83627hf.h" |
| |
| static void pnp_enter_ext_func_mode(pnp_devfn_t dev) |
| { |
| u16 port = dev >> 8; |
| outb(0x87, port); |
| outb(0x87, port); |
| } |
| |
| static void pnp_exit_ext_func_mode(pnp_devfn_t dev) |
| { |
| u16 port = dev >> 8; |
| outb(0xaa, port); |
| } |
| |
| /* |
| * We duplicate this function, for non-ROMCC boards, from early_serial.c to |
| * work around a limitation of ROMCC where we can no make early_serial.c into |
| * link-time symbols and #include early_serial.c. |
| */ |
| void w83627hf_set_clksel_48(pnp_devfn_t dev) |
| { |
| u8 reg8; |
| |
| pnp_enter_ext_func_mode(dev); |
| reg8 = pnp_read_config(dev, 0x24); |
| reg8 |= (1 << 6); /* Set CLKSEL (clock input on pin 1) to 48MHz. */ |
| pnp_write_config(dev, 0x24, reg8); |
| pnp_exit_ext_func_mode(dev); |
| } |