summaryrefslogtreecommitdiff
path: root/arch/mips/alchemy/gpr/platform.c
blob: 14b46629cfc81cb1a23c5665f759cb89b76cbfa0 (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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
/*
 * GPR board platform device registration
 *
 * Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de>
 *
 * 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.
 *
 * 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 <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>

#include <asm/mach-au1x00/au1000.h>

/*
 * Watchdog
 */
static struct resource gpr_wdt_resource[] = {
	[0] = {
		.start	= 1,
		.end	= 1,
		.name	= "gpr-adm6320-wdt",
		.flags	= IORESOURCE_IRQ,
	}
};

static struct platform_device gpr_wdt_device = {
	.name = "adm6320-wdt",
	.id = 0,
	.num_resources = ARRAY_SIZE(gpr_wdt_resource),
	.resource = gpr_wdt_resource,
};

/*
 * FLASH
 *
 * 0x00000000-0x00200000 : "kernel"
 * 0x00200000-0x00a00000 : "rootfs"
 * 0x01d00000-0x01f00000 : "config"
 * 0x01c00000-0x01d00000 : "yamon"
 * 0x01d00000-0x01d40000 : "yamon env vars"
 * 0x00000000-0x00a00000 : "kernel+rootfs"
 */
static struct mtd_partition gpr_mtd_partitions[] = {
	{
		.name	= "kernel",
		.size	= 0x00200000,
		.offset	= 0,
	},
	{
		.name	= "rootfs",
		.size	= 0x00800000,
		.offset	= MTDPART_OFS_APPEND,
		.mask_flags = MTD_WRITEABLE,
	},
	{
		.name	= "config",
		.size	= 0x00200000,
		.offset	= 0x01d00000,
	},
	{
		.name	= "yamon",
		.size	= 0x00100000,
		.offset	= 0x01c00000,
	},
	{
		.name	= "yamon env vars",
		.size	= 0x00040000,
		.offset	= MTDPART_OFS_APPEND,
	},
	{
		.name	= "kernel+rootfs",
		.size	= 0x00a00000,
		.offset	= 0,
	},
};

static struct physmap_flash_data gpr_flash_data = {
	.width		= 4,
	.nr_parts	= ARRAY_SIZE(gpr_mtd_partitions),
	.parts		= gpr_mtd_partitions,
};

static struct resource gpr_mtd_resource = {
	.start	= 0x1e000000,
	.end	= 0x1fffffff,
	.flags	= IORESOURCE_MEM,
};

static struct platform_device gpr_mtd_device = {
	.name		= "physmap-flash",
	.dev		= {
		.platform_data	= &gpr_flash_data,
	},
	.num_resources	= 1,
	.resource	= &gpr_mtd_resource,
};

/*
 * LEDs
 */
static struct gpio_led gpr_gpio_leds[] = {
	{	/* green */
		.name			= "gpr:green",
		.gpio			= 4,
		.active_low		= 1,
	},
	{	/* red */
		.name			= "gpr:red",
		.gpio			= 5,
		.active_low		= 1,
	}
};

static struct gpio_led_platform_data gpr_led_data = {
	.num_leds = ARRAY_SIZE(gpr_gpio_leds),
	.leds = gpr_gpio_leds,
};

static struct platform_device gpr_led_devices = {
	.name = "leds-gpio",
	.id = -1,
	.dev = {
		.platform_data = &gpr_led_data,
	}
};

/*
 * I2C
 */
static struct i2c_gpio_platform_data gpr_i2c_data = {
	.sda_pin		= 209,
	.sda_is_open_drain	= 1,
	.scl_pin		= 210,
	.scl_is_open_drain	= 1,
	.udelay			= 2,		/* ~100 kHz */
	.timeout		= HZ,
 };

static struct platform_device gpr_i2c_device = {
	.name			= "i2c-gpio",
	.id			= -1,
	.dev.platform_data	= &gpr_i2c_data,
};

static struct i2c_board_info gpr_i2c_info[] __initdata = {
	{
		I2C_BOARD_INFO("lm83", 0x18),
		.type = "lm83"
	}
};

static struct platform_device *gpr_devices[] __initdata = {
	&gpr_wdt_device,
	&gpr_mtd_device,
	&gpr_i2c_device,
	&gpr_led_devices,
};

static int __init gpr_dev_init(void)
{
	i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));

	return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
}
device_initcall(gpr_dev_init);