1/*
2 * DSM-G600 board-setup
3 *
4 * Copyright (C) 2006 Tower Technologies
5 * Author: Alessandro Zummo <a.zummo@towertech.it>
6 *
7 * based ixdp425-setup.c:
8 *      Copyright (C) 2003-2004 MontaVista Software, Inc.
9 *
10 * Author: Alessandro Zummo <a.zummo@towertech.it>
11 * Maintainers: http://www.nslu2-linux.org/
12 */
13
14#include <linux/kernel.h>
15#include <linux/serial.h>
16#include <linux/serial_8250.h>
17
18#include <asm/mach-types.h>
19#include <asm/mach/arch.h>
20#include <asm/mach/flash.h>
21#include <asm/mach/time.h>
22
23static struct flash_platform_data dsmg600_flash_data = {
24	.map_name		= "cfi_probe",
25	.width			= 2,
26};
27
28static struct resource dsmg600_flash_resource = {
29	.flags			= IORESOURCE_MEM,
30};
31
32static struct platform_device dsmg600_flash = {
33	.name			= "IXP4XX-Flash",
34	.id			= 0,
35	.dev.platform_data	= &dsmg600_flash_data,
36	.num_resources		= 1,
37	.resource		= &dsmg600_flash_resource,
38};
39
40static struct ixp4xx_i2c_pins dsmg600_i2c_gpio_pins = {
41	.sda_pin		= DSMG600_SDA_PIN,
42	.scl_pin		= DSMG600_SCL_PIN,
43};
44
45static struct platform_device dsmg600_i2c_controller = {
46	.name			= "IXP4XX-I2C",
47	.id			= 0,
48	.dev.platform_data	= &dsmg600_i2c_gpio_pins,
49};
50
51#ifdef CONFIG_LEDS_CLASS
52static struct resource dsmg600_led_resources[] = {
53	{
54		.name           = "power",
55		.start          = DSMG600_LED_PWR_GPIO,
56		.end            = DSMG600_LED_PWR_GPIO,
57		.flags          = IXP4XX_GPIO_HIGH,
58	},
59	{
60		.name           = "wlan",
61		.start		= DSMG600_LED_WLAN_GPIO,
62		.end            = DSMG600_LED_WLAN_GPIO,
63		.flags          = IXP4XX_GPIO_LOW,
64	},
65};
66
67static struct platform_device dsmg600_leds = {
68        .name                   = "IXP4XX-GPIO-LED",
69        .id                     = -1,
70        .num_resources          = ARRAY_SIZE(dsmg600_led_resources),
71        .resource               = dsmg600_led_resources,
72};
73#endif
74
75static struct resource dsmg600_uart_resources[] = {
76	{
77		.start		= IXP4XX_UART1_BASE_PHYS,
78		.end		= IXP4XX_UART1_BASE_PHYS + 0x0fff,
79		.flags		= IORESOURCE_MEM,
80	},
81	{
82		.start		= IXP4XX_UART2_BASE_PHYS,
83		.end		= IXP4XX_UART2_BASE_PHYS + 0x0fff,
84		.flags		= IORESOURCE_MEM,
85	}
86};
87
88static struct plat_serial8250_port dsmg600_uart_data[] = {
89	{
90		.mapbase	= IXP4XX_UART1_BASE_PHYS,
91		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
92		.irq		= IRQ_IXP4XX_UART1,
93		.flags		= UPF_BOOT_AUTOCONF,
94		.iotype		= UPIO_MEM,
95		.regshift	= 2,
96		.uartclk	= IXP4XX_UART_XTAL,
97	},
98	{
99		.mapbase	= IXP4XX_UART2_BASE_PHYS,
100		.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
101		.irq		= IRQ_IXP4XX_UART2,
102		.flags		= UPF_BOOT_AUTOCONF,
103		.iotype		= UPIO_MEM,
104		.regshift	= 2,
105		.uartclk	= IXP4XX_UART_XTAL,
106	},
107	{ }
108};
109
110static struct platform_device dsmg600_uart = {
111	.name			= "serial8250",
112	.id			= PLAT8250_DEV_PLATFORM,
113	.dev.platform_data	= dsmg600_uart_data,
114	.num_resources		= ARRAY_SIZE(dsmg600_uart_resources),
115	.resource		= dsmg600_uart_resources,
116};
117
118static struct platform_device *dsmg600_devices[] __initdata = {
119	&dsmg600_i2c_controller,
120	&dsmg600_flash,
121};
122
123static void dsmg600_power_off(void)
124{
125	/* enable the pwr cntl gpio */
126	gpio_line_config(DSMG600_PO_GPIO, IXP4XX_GPIO_OUT);
127
128	/* poweroff */
129	gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
130}
131
132static void __init dsmg600_timer_init(void)
133{
134    /* The xtal on this machine is non-standard. */
135    ixp4xx_timer_freq = DSMG600_FREQ;
136
137    /* Call standard timer_init function. */
138    ixp4xx_timer_init();
139}
140
141static struct sys_timer dsmg600_timer = {
142    .init   = dsmg600_timer_init,
143};
144
145static void __init dsmg600_init(void)
146{
147	ixp4xx_sys_init();
148
149	/* Make sure that GPIO14 and GPIO15 are not used as clocks */
150	*IXP4XX_GPIO_GPCLKR = 0;
151
152	dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
153	dsmg600_flash_resource.end =
154		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
155
156	pm_power_off = dsmg600_power_off;
157
158	/* The UART is required on the DSM-G600 (Redboot cannot use the
159	 * NIC) -- do it here so that it does *not* get removed if
160	 * platform_add_devices fails!
161         */
162        (void)platform_device_register(&dsmg600_uart);
163
164	platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
165
166#ifdef CONFIG_LEDS_CLASS
167        /* We don't care whether or not this works. */
168        (void)platform_device_register(&dsmg600_leds);
169#endif
170}
171
172MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
173	/* Maintainer: www.nslu2-linux.org */
174	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
175	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
176	.boot_params	= 0x00000100,
177	.map_io		= ixp4xx_map_io,
178	.init_irq	= ixp4xx_init_irq,
179	.timer          = &dsmg600_timer,
180	.init_machine	= dsmg600_init,
181MACHINE_END
182