Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2008 Arastra, Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 15 | */ |
| 16 | |
Stefan Reinauer | 24d1d4b | 2013-03-21 11:51:41 -0700 | [diff] [blame] | 17 | #include <arch/io.h> |
Edward O'Callaghan | e64f5b1 | 2015-01-04 04:25:38 +1100 | [diff] [blame] | 18 | #include <device/pnp.h> |
| 19 | #include <stdint.h> |
Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 20 | #include "i3100.h" |
| 21 | |
Edward O'Callaghan | 85836c2 | 2014-07-09 20:26:25 +1000 | [diff] [blame] | 22 | static void pnp_enter_ext_func_mode(pnp_devfn_t dev) |
Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 23 | { |
Uwe Hermann | d1a1d57 | 2010-11-10 18:22:11 +0000 | [diff] [blame] | 24 | u16 port = dev >> 8; |
Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 25 | |
Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 26 | outb(0x80, port); |
| 27 | outb(0x86, port); |
Uwe Hermann | d1a1d57 | 2010-11-10 18:22:11 +0000 | [diff] [blame] | 28 | } |
Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 29 | |
Edward O'Callaghan | 85836c2 | 2014-07-09 20:26:25 +1000 | [diff] [blame] | 30 | static void pnp_exit_ext_func_mode(pnp_devfn_t dev) |
Uwe Hermann | d1a1d57 | 2010-11-10 18:22:11 +0000 | [diff] [blame] | 31 | { |
| 32 | u16 port = dev >> 8; |
Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 33 | |
Ed Swierk | 62eee3f | 2008-03-16 23:31:04 +0000 | [diff] [blame] | 34 | outb(0x68, port); |
| 35 | outb(0x08, port); |
| 36 | } |
Uwe Hermann | d1a1d57 | 2010-11-10 18:22:11 +0000 | [diff] [blame] | 37 | |
| 38 | /* Enable device interrupts, set UART_CLK predivide. */ |
Edward O'Callaghan | e64f5b1 | 2015-01-04 04:25:38 +1100 | [diff] [blame] | 39 | void i3100_configure_uart_clk(pnp_devfn_t dev, u8 predivide) |
Uwe Hermann | d1a1d57 | 2010-11-10 18:22:11 +0000 | [diff] [blame] | 40 | { |
| 41 | pnp_enter_ext_func_mode(dev); |
| 42 | pnp_write_config(dev, I3100_SIW_CONFIGURATION, (predivide << 2) | 1); |
| 43 | pnp_exit_ext_func_mode(dev); |
| 44 | } |
| 45 | |
Edward O'Callaghan | e64f5b1 | 2015-01-04 04:25:38 +1100 | [diff] [blame] | 46 | void i3100_enable_serial(pnp_devfn_t dev, u16 iobase) |
Uwe Hermann | d1a1d57 | 2010-11-10 18:22:11 +0000 | [diff] [blame] | 47 | { |
| 48 | pnp_enter_ext_func_mode(dev); |
| 49 | pnp_set_logical_device(dev); |
| 50 | pnp_set_enable(dev, 0); |
| 51 | pnp_set_iobase(dev, PNP_IDX_IO0, iobase); |
| 52 | pnp_set_enable(dev, 1); |
| 53 | pnp_exit_ext_func_mode(dev); |
| 54 | } |