aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-ixp4xx/gtwx5715-setup.c
blob: 3790dffd3c30e46ee4cf9ae4cfd9c8990e4a91dd (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
/*
 * arch/arm/mach-ixp4xx/gtwx5715-setup.c
 *
 * Gemtek GTWX5715 (Linksys WRV54G) board setup
 *
 * Copyright (C) 2004 George T. Joseph
 * Derived from Coyote
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#include <linux/init.h>
#include <linux/device.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/serial_8250.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>

/* GPIO 5,6,7 and 12 are hard wired to the Kendin KS8995M Switch
   and operate as an SPI type interface.  The details of the interface
   are available on Kendin/Micrel's web site. */

#define GTWX5715_KSSPI_SELECT	5
#define GTWX5715_KSSPI_TXD	6
#define GTWX5715_KSSPI_CLOCK	7
#define GTWX5715_KSSPI_RXD	12

/* The "reset" button is wired to GPIO 3.
   The GPIO is brought "low" when the button is pushed. */

#define GTWX5715_BUTTON_GPIO	3

/* Board Label      Front Label
   LED1             Power
   LED2             Wireless-G
   LED3             not populated but could be
   LED4             Internet
   LED5 - LED8      Controlled by KS8995M Switch
   LED9             DMZ */

#define GTWX5715_LED1_GPIO	2
#define GTWX5715_LED2_GPIO	9
#define GTWX5715_LED3_GPIO	8
#define GTWX5715_LED4_GPIO	1
#define GTWX5715_LED9_GPIO	4

/*
 * Xscale UART registers are 32 bits wide with only the least
 * significant 8 bits having any meaning.  From a configuration
 * perspective, this means 2 things...
 *
 *   Setting .regshift = 2 so that the standard 16550 registers
 *   line up on every 4th byte.
 *
 *   Shifting the register start virtual address +3 bytes when
 *   compiled big-endian.  Since register writes are done on a
 *   single byte basis, if the shift isn't done the driver will
 *   write the value into the most significant byte of the register,
 *   which is ignored, instead of the least significant.
 */

#ifdef	__ARMEB__
#define	REG_OFFSET	3
#else
#define	REG_OFFSET	0
#endif

/*
 * Only the second or "console" uart is connected on the gtwx5715.
 */

static struct resource gtwx5715_uart_resources[] = {
	{
		.start	= IXP4XX_UART2_BASE_PHYS,
		.end	= IXP4XX_UART2_BASE_PHYS + 0x0fff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= IRQ_IXP4XX_UART2,
		.end	= IRQ_IXP4XX_UART2,
		.flags	= IORESOURCE_IRQ,
	},
	{ },
};


static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
	{
	.mapbase	= IXP4XX_UART2_BASE_PHYS,
	.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
	.irq		= IRQ_IXP4XX_UART2,
	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
	.iotype		= UPIO_MEM,
	.regshift	= 2,
	.uartclk	= IXP4XX_UART_XTAL,
	},
	{ },
};

static struct platform_device gtwx5715_uart_device = {
	.name		= "serial8250",
	.id		= PLAT8250_DEV_PLATFORM,
	.dev			= {
		.platform_data	= gtwx5715_uart_platform_data,
	},
	.num_resources	= 2,
	.resource	= gtwx5715_uart_resources,
};

static struct flash_platform_data gtwx5715_flash_data = {
	.map_name	= "cfi_probe",
	.width		= 2,
};

static struct resource gtwx5715_flash_resource = {
	.flags		= IORESOURCE_MEM,
};

static struct platform_device gtwx5715_flash = {
	.name		= "IXP4XX-Flash",
	.id		= 0,
	.dev		= {
		.platform_data = &gtwx5715_flash_data,
	},
	.num_resources	= 1,
	.resource	= &gtwx5715_flash_resource,
};

static struct platform_device *gtwx5715_devices[] __initdata = {
	&gtwx5715_uart_device,
	&gtwx5715_flash,
};

static void __init gtwx5715_init(void)
{
	ixp4xx_sys_init();

	gtwx5715_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
	gtwx5715_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_8M - 1;

	platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
}


MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
	/* Maintainer: George Joseph */
	.map_io		= ixp4xx_map_io,
	.init_irq	= ixp4xx_init_irq,
	.timer		= &ixp4xx_timer,
	.boot_params	= 0x0100,
	.init_machine	= gtwx5715_init,
#if defined(CONFIG_PCI)
	.dma_zone_size	= SZ_64M,
#endif
MACHINE_END