1/*
2 * arch/arm/mach-ixp4xx/nslu2-setup.c
3 *
4 * NSLU2 board-setup
5 *
6 * based ixdp425-setup.c:
7 *      Copyright (C) 2003-2004 MontaVista Software, Inc.
8 *
9 * Author: Mark Rakes <mrakes at mac.com>
10 * Author: Rod Whitby <rod@whitby.id.au>
11 * Maintainers: http://www.nslu2-linux.org/
12 *
13 * Fixed missing init_time in MACHINE_START kas11 10/22/04
14 * Changed to conform to new style __init ixdp425 kas11 10/22/04
15 */
16
17#include <linux/kernel.h>
18#include <linux/serial.h>
19#include <linux/serial_8250.h>
20#include <linux/leds.h>
21
22#include <asm/mach-types.h>
23#include <asm/mach/arch.h>
24#include <asm/mach/flash.h>
25#include <asm/mach/time.h>
26
27static struct flash_platform_data nslu2_flash_data = {
28	.map_name		= "cfi_probe",
29	.width			= 2,
30};
31
32static struct resource nslu2_flash_resource = {
33	.flags			= IORESOURCE_MEM,
34};
35
36static struct platform_device nslu2_flash = {
37	.name			= "IXP4XX-Flash",
38	.id			= 0,
39	.dev.platform_data	= &nslu2_flash_data,
40	.num_resources		= 1,
41	.resource		= &nslu2_flash_resource,
42};
43
44static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
45	.sda_pin		= NSLU2_SDA_PIN,
46	.scl_pin		= NSLU2_SCL_PIN,
47};
48
49#ifdef CONFIG_LEDS_IXP4XX
50static struct resource nslu2_led_resources[] = {
51	{
52		.name		= "ready",  /* green led */
53		.start		= NSLU2_LED_GRN_GPIO,
54		.end		= NSLU2_LED_GRN_GPIO,
55		.flags		= IXP4XX_GPIO_HIGH,
56	},
57	{
58		.name		= "status", /* red led */
59		.start		= NSLU2_LED_RED_GPIO,
60		.end		= NSLU2_LED_RED_GPIO,
61		.flags		= IXP4XX_GPIO_HIGH,
62	},
63	{
64		.name		= "disk-1",
65		.start		= NSLU2_LED_DISK1_GPIO,
66		.end		= NSLU2_LED_DISK1_GPIO,
67		.flags		= IXP4XX_GPIO_LOW,
68	},
69	{
70		.name		= "disk-2",
71		.start		= NSLU2_LED_DISK2_GPIO,
72		.end		= NSLU2_LED_DISK2_GPIO,
73		.flags		= IXP4XX_GPIO_LOW,
74	},
75};
76
77static struct platform_device nslu2_leds = {
78	.name			= "IXP4XX-GPIO-LED",
79	.id			= -1,
80	.num_resources		= ARRAY_SIZE(nslu2_led_resources),
81	.resource		= nslu2_led_resources,
82};
83#endif
84
85static struct platform_device nslu2_i2c_controller = {
86	.name			= "IXP4XX-I2C",
87	.id			= 0,
88	.dev.platform_data	= &nslu2_i2c_gpio_pins,
89	.num_resources		= 0,
90};
91
92static struct platform_device nslu2_beeper = {
93	.name			= "ixp4xx-beeper",
94	.id			= NSLU2_GPIO_BUZZ,
95	.num_resources		= 0,
96};
97
98static struct resource nslu2_uart_resources[] = {
99	{
100		.start		= IXP4XX_UART1_BASE_PHYS,
101		.end		= IXP4XX_UART1_BASE_PHYS + 0x0fff,
102		.flags		= IORESOURCE_MEM,
103	},
104	{
105		.start		= IXP4XX_UART2_BASE_PHYS,
106		.end		= IXP4XX_UART2_BASE_PHYS + 0x0fff,
107		.flags		= IORESOURCE_MEM,
108	}
109};
110
111static struct plat_serial8250_port nslu2_uart_data[] = {
112	{
113		.mapbase	= IXP4XX_UART1_BASE_PHYS,
114		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
115		.irq		= IRQ_IXP4XX_UART1,
116		.flags		= UPF_BOOT_AUTOCONF,
117		.iotype		= UPIO_MEM,
118		.regshift	= 2,
119		.uartclk	= IXP4XX_UART_XTAL,
120	},
121	{
122		.mapbase	= IXP4XX_UART2_BASE_PHYS,
123		.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
124		.irq		= IRQ_IXP4XX_UART2,
125		.flags		= UPF_BOOT_AUTOCONF,
126		.iotype		= UPIO_MEM,
127		.regshift	= 2,
128		.uartclk	= IXP4XX_UART_XTAL,
129	},
130	{ }
131};
132
133static struct platform_device nslu2_uart = {
134	.name			= "serial8250",
135	.id			= PLAT8250_DEV_PLATFORM,
136	.dev.platform_data	= nslu2_uart_data,
137	.num_resources		= 2,
138	.resource		= nslu2_uart_resources,
139};
140
141static struct platform_device *nslu2_devices[] __initdata = {
142	&nslu2_i2c_controller,
143	&nslu2_flash,
144	&nslu2_beeper,
145#ifdef CONFIG_LEDS_IXP4XX
146	&nslu2_leds,
147#endif
148};
149
150static void nslu2_power_off(void)
151{
152	/* This causes the box to drop the power and go dead. */
153
154	/* enable the pwr cntl gpio */
155	gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
156
157	/* do the deed */
158	gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
159}
160
161static void __init nslu2_timer_init(void)
162{
163    /* The xtal on this machine is non-standard. */
164    ixp4xx_timer_freq = NSLU2_FREQ;
165
166    /* Call standard timer_init function. */
167    ixp4xx_timer_init();
168}
169
170static struct sys_timer nslu2_timer = {
171    .init   = nslu2_timer_init,
172};
173
174static void __init nslu2_init(void)
175{
176	ixp4xx_sys_init();
177
178	nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
179	nslu2_flash_resource.end =
180		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
181
182	pm_power_off = nslu2_power_off;
183
184	/*
185	 * This is only useful on a modified machine, but it is valuable
186	 * to have it first in order to see debug messages, and so that
187	 * it does *not* get removed if platform_add_devices fails!
188	 */
189	(void)platform_device_register(&nslu2_uart);
190
191	platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
192}
193
194MACHINE_START(NSLU2, "Linksys NSLU2")
195	/* Maintainer: www.nslu2-linux.org */
196	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
197	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
198	.boot_params	= 0x00000100,
199	.map_io		= ixp4xx_map_io,
200	.init_irq	= ixp4xx_init_irq,
201	.timer          = &nslu2_timer,
202	.init_machine	= nslu2_init,
203MACHINE_END
204