summaryrefslogtreecommitdiff
path: root/src/superio/winbond/w83627ehg/superio.c
blob: aae0ac453ed46400d01333fc31612bb18b286acb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
/*
 * 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) 2007 AMD
 * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <arch/io.h>
#include <device/device.h>
#include <device/pnp.h>
#include <superio/conf_mode.h>
#include <console/console.h>
#include <string.h>
#include <pc80/keyboard.h>
#include <pc80/mc146818rtc.h>
#include <stdlib.h>
#include "w83627ehg.h"

static void pnp_write_index(u16 port, u8 reg, u8 value)
{
	outb(reg, port);
	outb(value, port + 1);
}

static u8 pnp_read_index(u16 port, u8 reg)
{
	outb(reg, port);
	return inb(port + 1);
}

static void enable_hwm_smbus(device_t dev)
{
	u8 reg8;

	/* Configure pins 91/92 as SDA/SCL (I2C bus). */
	reg8 = pnp_read_config(dev, 0x2a);
	reg8 |= (1 << 1);
	pnp_write_config(dev, 0x2a, reg8);
}

static void init_acpi(device_t dev)
{
	u8 value = 0x20; /* TODO: 0x20 value here never used? */
	int power_on = 1;

	get_option(&power_on, "power_on_after_fail");
	pnp_enter_conf_mode(dev);
	pnp_set_logical_device(dev);
	value = pnp_read_config(dev, 0xe4);
	value &= ~(3 << 5);
	if (power_on)
		value |= (1 << 5);
	pnp_write_config(dev, 0xe4, value);
	pnp_exit_conf_mode(dev);
}

static void init_hwm(u16 base)
{
	int i;
	u8 reg, value;

	/* reg mask data */
	u8 hwm_reg_values[] = {
		0x40, 0xff, 0x81, /* Start HWM. */
		0x48, 0x7f, 0x2a, /* Set SMBus base to 0x2a (0x54 >> 1). */
	};

	for (i = 0; i < ARRAY_SIZE(hwm_reg_values); i += 3) {
		reg = hwm_reg_values[i];
		value = pnp_read_index(base, reg);
		value &= 0xff & (~(hwm_reg_values[i + 1]));
		value |= 0xff & hwm_reg_values[i + 2];
		printk(BIOS_DEBUG, "base = 0x%04x, reg = 0x%02x, "
		       "value = 0x%02x\n", base, reg, value);
		pnp_write_index(base, reg, value);
	}
}

static void w83627ehg_init(device_t dev)
{
	struct resource *res0;

	if (!dev->enabled)
		return;

	switch(dev->path.pnp.device) {
	case W83627EHG_KBC:
		pc_keyboard_init();
		break;
	case W83627EHG_HWM:
		res0 = find_resource(dev, PNP_IDX_IO0);
#define HWM_INDEX_PORT 5
		init_hwm(res0->base + HWM_INDEX_PORT);
		break;
	case W83627EHG_ACPI:
		init_acpi(dev);
		break;
	}
}

static void w83627ehg_pnp_enable_resources(device_t dev)
{
	pnp_enable_resources(dev);

	pnp_enter_conf_mode(dev);
	switch (dev->path.pnp.device) {
	case W83627EHG_HWM:
		printk(BIOS_DEBUG, "W83627EHG HWM SMBus enabled\n");
		enable_hwm_smbus(dev);
		break;
	}
	pnp_exit_conf_mode(dev);
}

static struct device_operations ops = {
	.read_resources   = pnp_read_resources,
	.set_resources    = pnp_set_resources,
	.enable_resources = w83627ehg_pnp_enable_resources,
	.enable           = pnp_alt_enable,
	.init             = w83627ehg_init,
	.ops_pnp_mode     = &pnp_conf_mode_8787_aa,
};

static struct pnp_info pnp_dev_info[] = {
	{ &ops, W83627EHG_FDC,  PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
	{ &ops, W83627EHG_PP,   PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
	{ &ops, W83627EHG_SP1,  PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
	{ &ops, W83627EHG_SP2,  PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
	{ &ops, W83627EHG_KBC,  PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, {0x07ff, 0}, {0x07ff, 4}, },
	{ &ops, W83627EHG_SFI,  PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
	{ &ops, W83627EHG_WDTO_PLED, },
	{ &ops, W83627EHG_ACPI, PNP_IRQ0, },
	{ &ops, W83627EHG_HWM,  PNP_IO0 | PNP_IRQ0, {0x07fe, 0}, },

	{ &ops, W83627EHG_GAME, PNP_IO0, {0x07ff, 0}, },
	{ &ops, W83627EHG_MIDI, PNP_IO1 | PNP_IRQ0, {0, 0}, {0x07fe, 4}, },
	{ &ops, W83627EHG_GPIO1, },
	{ &ops, W83627EHG_GPIO2, },
	{ &ops, W83627EHG_GPIO3, },
	{ &ops, W83627EHG_GPIO4, },
	{ &ops, W83627EHG_GPIO5, },
	{ &ops, W83627EHG_GPIO6, },
};

static void enable_dev(struct device *dev)
{
	pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
}

struct chip_operations superio_winbond_w83627ehg_ops = {
	CHIP_NAME("Winbond W83627EHG Super I/O")
	.enable_dev = enable_dev,
};