board-og.c
4.48 KB
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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
/*
* board-og.c -- support for the OpenGear KS8695 based boards.
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/gpio.h>
#include <linux/irq.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/devices.h>
#include <mach/regs-gpio.h>
#include <mach/gpio-ks8695.h>
#include "generic.h"
static int og_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
if (machine_is_im4004() && (slot == 8))
return KS8695_IRQ_EXTERN1;
return KS8695_IRQ_EXTERN0;
}
static struct ks8695_pci_cfg __initdata og_pci = {
.mode = KS8695_MODE_PCI,
.map_irq = og_pci_map_irq,
};
static void __init og_register_pci(void)
{
/* Initialize the GPIO lines for interrupt mode */
ks8695_gpio_interrupt(KS8695_GPIO_0, IRQ_TYPE_LEVEL_LOW);
/* Cardbus Slot */
if (machine_is_im4004())
ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_LOW);
ks8695_init_pci(&og_pci);
}
/*
* The PCI bus reset is driven by a dedicated GPIO line. Toggle it here
* and bring the PCI bus out of reset.
*/
static void __init og_pci_bus_reset(void)
{
unsigned int rstline = 1;
/* Some boards use a different GPIO as the PCI reset line */
if (machine_is_im4004())
rstline = 2;
else if (machine_is_im42xx())
rstline = 0;
gpio_request(rstline, "PCI reset");
gpio_direction_output(rstline, 0);
/* Drive a reset on the PCI reset line */
gpio_set_value(rstline, 1);
gpio_set_value(rstline, 0);
mdelay(100);
gpio_set_value(rstline, 1);
mdelay(100);
}
/*
* Direct connect serial ports (non-PCI that is).
*/
#define S8250_PHYS 0x03800000
#define S8250_VIRT 0xf4000000
#define S8250_SIZE 0x00100000
static struct __initdata map_desc og_io_desc[] = {
{
.virtual = S8250_VIRT,
.pfn = __phys_to_pfn(S8250_PHYS),
.length = S8250_SIZE,
.type = MT_DEVICE,
}
};
static struct resource og_uart_resources[] = {
{
.start = S8250_VIRT,
.end = S8250_VIRT + S8250_SIZE,
.flags = IORESOURCE_MEM
},
};
static struct plat_serial8250_port og_uart_data[] = {
{
.mapbase = S8250_VIRT,
.membase = (char *) S8250_VIRT,
.irq = 3,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = 115200 * 16,
},
{ },
};
static struct platform_device og_uart = {
.name = "serial8250",
.id = 0,
.dev.platform_data = og_uart_data,
.num_resources = 1,
.resource = og_uart_resources
};
static struct platform_device *og_devices[] __initdata = {
&og_uart
};
static void __init og_init(void)
{
ks8695_register_gpios();
if (machine_is_cm4002()) {
ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_HIGH);
iotable_init(og_io_desc, ARRAY_SIZE(og_io_desc));
platform_add_devices(og_devices, ARRAY_SIZE(og_devices));
} else {
og_pci_bus_reset();
og_register_pci();
}
ks8695_add_device_lan();
ks8695_add_device_wan();
}
#ifdef CONFIG_MACH_CM4002
MACHINE_START(CM4002, "OpenGear/CM4002")
/* OpenGear Inc. */
.atag_offset = 0x100,
.map_io = ks8695_map_io,
.init_irq = ks8695_init_irq,
.init_machine = og_init,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_CM4008
MACHINE_START(CM4008, "OpenGear/CM4008")
/* OpenGear Inc. */
.atag_offset = 0x100,
.map_io = ks8695_map_io,
.init_irq = ks8695_init_irq,
.init_machine = og_init,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_CM41xx
MACHINE_START(CM41XX, "OpenGear/CM41xx")
/* OpenGear Inc. */
.atag_offset = 0x100,
.map_io = ks8695_map_io,
.init_irq = ks8695_init_irq,
.init_machine = og_init,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_IM4004
MACHINE_START(IM4004, "OpenGear/IM4004")
/* OpenGear Inc. */
.atag_offset = 0x100,
.map_io = ks8695_map_io,
.init_irq = ks8695_init_irq,
.init_machine = og_init,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
#ifdef CONFIG_MACH_IM42xx
MACHINE_START(IM42XX, "OpenGear/IM42xx")
/* OpenGear Inc. */
.atag_offset = 0x100,
.map_io = ks8695_map_io,
.init_irq = ks8695_init_irq,
.init_machine = og_init,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif