[net-next-2.6.git] / arch / arm / mach-ixp4xx / nslu2-setup.c

/*
 * arch/arm/mach-ixp4xx/nslu2-setup.c
 *
 * NSLU2 board-setup
 *
 * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
 *
 * based on ixdp425-setup.c:
 *      Copyright (C) 2003-2004 MontaVista Software, Inc.
 * based on nslu2-power.c:
 *	Copyright (C) 2005 Tower Technologies
 *
 * Author: Mark Rakes <mrakes at mac.com>
 * Author: Rod Whitby <rod@whitby.id.au>
 * Author: Alessandro Zummo <a.zummo@towertech.it>
 * Maintainers: http://www.nslu2-linux.org/
 *
 */

#include <linux/if_ether.h>
#include <linux/irq.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/leds.h>
#include <linux/reboot.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/io.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/time.h>
#include <asm/gpio.h>

static struct flash_platform_data nslu2_flash_data = {
	.map_name		= "cfi_probe",
	.width			= 2,
};

static struct resource nslu2_flash_resource = {
	.flags			= IORESOURCE_MEM,
};

static struct platform_device nslu2_flash = {
	.name			= "IXP4XX-Flash",
	.id			= 0,
	.dev.platform_data	= &nslu2_flash_data,
	.num_resources		= 1,
	.resource		= &nslu2_flash_resource,
};

static struct i2c_gpio_platform_data nslu2_i2c_gpio_data = {
	.sda_pin		= NSLU2_SDA_PIN,
	.scl_pin		= NSLU2_SCL_PIN,
};

static struct i2c_board_info __initdata nslu2_i2c_board_info [] = {
	{
		I2C_BOARD_INFO("x1205", 0x6f),
	},
};

static struct gpio_led nslu2_led_pins[] = {
	{
		.name		= "nslu2:green:ready",
		.gpio		= NSLU2_LED_GRN_GPIO,
	},
	{
		.name		= "nslu2:red:status",
		.gpio		= NSLU2_LED_RED_GPIO,
	},
	{
		.name		= "nslu2:green:disk-1",
		.gpio		= NSLU2_LED_DISK1_GPIO,
		.active_low	= true,
	},
	{
		.name		= "nslu2:green:disk-2",
		.gpio		= NSLU2_LED_DISK2_GPIO,
		.active_low	= true,
	},
};

static struct gpio_led_platform_data nslu2_led_data = {
	.num_leds		= ARRAY_SIZE(nslu2_led_pins),
	.leds			= nslu2_led_pins,
};

static struct platform_device nslu2_leds = {
	.name			= "leds-gpio",
	.id			= -1,
	.dev.platform_data	= &nslu2_led_data,
};

static struct platform_device nslu2_i2c_gpio = {
	.name			= "i2c-gpio",
	.id			= 0,
	.dev	 = {
		.platform_data	= &nslu2_i2c_gpio_data,
	},
};

static struct platform_device nslu2_beeper = {
	.name			= "ixp4xx-beeper",
	.id			= NSLU2_GPIO_BUZZ,
	.num_resources		= 0,
};

static struct resource nslu2_uart_resources[] = {
	{
		.start		= IXP4XX_UART1_BASE_PHYS,
		.end		= IXP4XX_UART1_BASE_PHYS + 0x0fff,
		.flags		= IORESOURCE_MEM,
	},
	{
		.start		= IXP4XX_UART2_BASE_PHYS,
		.end		= IXP4XX_UART2_BASE_PHYS + 0x0fff,
		.flags		= IORESOURCE_MEM,
	}
};

static struct plat_serial8250_port nslu2_uart_data[] = {
	{
		.mapbase	= IXP4XX_UART1_BASE_PHYS,
		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
		.irq		= IRQ_IXP4XX_UART1,
		.flags		= UPF_BOOT_AUTOCONF,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
		.uartclk	= IXP4XX_UART_XTAL,
	},
	{
		.mapbase	= IXP4XX_UART2_BASE_PHYS,
		.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
		.irq		= IRQ_IXP4XX_UART2,
		.flags		= UPF_BOOT_AUTOCONF,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
		.uartclk	= IXP4XX_UART_XTAL,
	},
	{ }
};

static struct platform_device nslu2_uart = {
	.name			= "serial8250",
	.id			= PLAT8250_DEV_PLATFORM,
	.dev.platform_data	= nslu2_uart_data,
	.num_resources		= 2,
	.resource		= nslu2_uart_resources,
};

/* Built-in 10/100 Ethernet MAC interfaces */
static struct eth_plat_info nslu2_plat_eth[] = {
	{
		.phy		= 1,
		.rxq		= 3,
		.txreadyq	= 20,
	}
};

static struct platform_device nslu2_eth[] = {
	{
		.name			= "ixp4xx_eth",
		.id			= IXP4XX_ETH_NPEB,
		.dev.platform_data	= nslu2_plat_eth,
	}
};

static struct platform_device *nslu2_devices[] __initdata = {
	&nslu2_i2c_gpio,
	&nslu2_flash,
	&nslu2_beeper,
	&nslu2_leds,
	&nslu2_eth[0],
};

static void nslu2_power_off(void)
{
	/* This causes the box to drop the power and go dead. */

	/* enable the pwr cntl gpio */
	gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);

	/* do the deed */
	gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
}

static irqreturn_t nslu2_power_handler(int irq, void *dev_id)
{
	/* Signal init to do the ctrlaltdel action, this will bypass init if
	 * it hasn't started and do a kernel_restart.
	 */
	ctrl_alt_del();

	return IRQ_HANDLED;
}

static irqreturn_t nslu2_reset_handler(int irq, void *dev_id)
{
	/* This is the paper-clip reset, it shuts the machine down directly.
	 */
	machine_power_off();

	return IRQ_HANDLED;
}

static void __init nslu2_timer_init(void)
{
    /* The xtal on this machine is non-standard. */
    ixp4xx_timer_freq = NSLU2_FREQ;

    /* Call standard timer_init function. */
    ixp4xx_timer_init();
}

static struct sys_timer nslu2_timer = {
    .init   = nslu2_timer_init,
};

static void __init nslu2_init(void)
{
	uint8_t __iomem *f;
	int i;

	ixp4xx_sys_init();

	nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
	nslu2_flash_resource.end =
		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;

	i2c_register_board_info(0, nslu2_i2c_board_info,
				ARRAY_SIZE(nslu2_i2c_board_info));

	/*
	 * This is only useful on a modified machine, but it is valuable
	 * to have it first in order to see debug messages, and so that
	 * it does *not* get removed if platform_add_devices fails!
	 */
	(void)platform_device_register(&nslu2_uart);

	platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));

	pm_power_off = nslu2_power_off;

	if (request_irq(gpio_to_irq(NSLU2_RB_GPIO), &nslu2_reset_handler,
		IRQF_DISABLED | IRQF_TRIGGER_LOW,
		"NSLU2 reset button", NULL) < 0) {

		printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
			gpio_to_irq(NSLU2_RB_GPIO));
	}

	if (request_irq(gpio_to_irq(NSLU2_PB_GPIO), &nslu2_power_handler,
		IRQF_DISABLED | IRQF_TRIGGER_HIGH,
		"NSLU2 power button", NULL) < 0) {

		printk(KERN_DEBUG "Power Button IRQ %d not available\n",
			gpio_to_irq(NSLU2_PB_GPIO));
	}

	/*
	 * Map in a portion of the flash and read the MAC address.
	 * Since it is stored in BE in the flash itself, we need to
	 * byteswap it if we're in LE mode.
	 */
	f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x40000);
	if (f) {
		for (i = 0; i < 6; i++)
#ifdef __ARMEB__
			nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + i);
#else
			nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + (i^3));
#endif
		iounmap(f);
	}
	printk(KERN_INFO "NSLU2: Using MAC address %pM for port 0\n",
	       nslu2_plat_eth[0].hwaddr);

}

MACHINE_START(NSLU2, "Linksys NSLU2")
	/* Maintainer: www.nslu2-linux.org */
	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
	.boot_params	= 0x00000100,
	.map_io		= ixp4xx_map_io,
	.init_irq	= ixp4xx_init_irq,
	.timer          = &nslu2_timer,
	.init_machine	= nslu2_init,
MACHINE_END
Commit	Line	Data
a7918f39 AZ	1	/*
	2	* arch/arm/mach-ixp4xx/nslu2-setup.c
	3	*
	4	* NSLU2 board-setup
	5	*
0929ac3e RW	6	* Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
	7	*
	8	* based on ixdp425-setup.c:
a7918f39	9	* Copyright (C) 2003-2004 MontaVista Software, Inc.
0929ac3e RW	10	* based on nslu2-power.c:
0929ac3e RW	11	* Copyright (C) 2005 Tower Technologies
a7918f39 AZ	12	*
a7918f39 AZ	13	* Author: Mark Rakes <mrakes at mac.com>
e22b04fb	14	* Author: Rod Whitby <rod@whitby.id.au>
0929ac3e	15	* Author: Alessandro Zummo <a.zummo@towertech.it>
a7918f39 AZ	16	* Maintainers: http://www.nslu2-linux.org/
a7918f39 AZ	17	*
a7918f39 AZ	18	*/
a7918f39 AZ	19
b7edc84a	20	#include <linux/if_ether.h>
0929ac3e	21	#include <linux/irq.h>
a7918f39 AZ	22	#include <linux/serial.h>
a7918f39 AZ	23	#include <linux/serial_8250.h>
e22b04fb	24	#include <linux/leds.h>
0929ac3e	25	#include <linux/reboot.h>
e28067d5	26	#include <linux/i2c.h>
5a4a2387	27	#include <linux/i2c-gpio.h>
fced80c7	28	#include <linux/io.h>
a7918f39 AZ	29
	30	#include <asm/mach-types.h>
	31	#include <asm/mach/arch.h>
	32	#include <asm/mach/flash.h>
435c5da0	33	#include <asm/mach/time.h>
0929ac3e	34	#include <asm/gpio.h>
a7918f39 AZ	35
	36	static struct flash_platform_data nslu2_flash_data = {
	37	.map_name = "cfi_probe",
	38	.width = 2,
	39	};
	40
	41	static struct resource nslu2_flash_resource = {
a7918f39 AZ	42	.flags = IORESOURCE_MEM,
	43	};
	44
	45	static struct platform_device nslu2_flash = {
	46	.name = "IXP4XX-Flash",
	47	.id = 0,
	48	.dev.platform_data = &nslu2_flash_data,
	49	.num_resources = 1,
	50	.resource = &nslu2_flash_resource,
	51	};
	52
5a4a2387	53	static struct i2c_gpio_platform_data nslu2_i2c_gpio_data = {
a7918f39 AZ	54	.sda_pin = NSLU2_SDA_PIN,
	55	.scl_pin = NSLU2_SCL_PIN,
	56	};
	57
e28067d5 RW	58	static struct i2c_board_info __initdata nslu2_i2c_board_info [] = {
e28067d5 RW	59	{
3760f736	60	I2C_BOARD_INFO("x1205", 0x6f),
e28067d5 RW	61	},
	62	};
	63
1208ebf2	64	static struct gpio_led nslu2_led_pins[] = {
e22b04fb	65	{
6c152bee	66	.name = "nslu2:green:ready",
1208ebf2	67	.gpio = NSLU2_LED_GRN_GPIO,
e22b04fb RW	68	},
e22b04fb RW	69	{
6c152bee	70	.name = "nslu2:red:status",
1208ebf2	71	.gpio = NSLU2_LED_RED_GPIO,
e22b04fb RW	72	},
e22b04fb RW	73	{
6c152bee	74	.name = "nslu2:green:disk-1",
1208ebf2 RW	75	.gpio = NSLU2_LED_DISK1_GPIO,
1208ebf2 RW	76	.active_low = true,
e22b04fb RW	77	},
e22b04fb RW	78	{
6c152bee	79	.name = "nslu2:green:disk-2",
1208ebf2 RW	80	.gpio = NSLU2_LED_DISK2_GPIO,
1208ebf2 RW	81	.active_low = true,
e22b04fb RW	82	},
	83	};
	84
1208ebf2 RW	85	static struct gpio_led_platform_data nslu2_led_data = {
	86	.num_leds = ARRAY_SIZE(nslu2_led_pins),
	87	.leds = nslu2_led_pins,
	88	};
	89
e22b04fb	90	static struct platform_device nslu2_leds = {
1208ebf2	91	.name = "leds-gpio",
e22b04fb	92	.id = -1,
1208ebf2	93	.dev.platform_data = &nslu2_led_data,
e22b04fb	94	};
e22b04fb	95
5a4a2387 MLJ	96	static struct platform_device nslu2_i2c_gpio = {
5a4a2387 MLJ	97	.name = "i2c-gpio",
a7918f39	98	.id = 0,
5a4a2387 MLJ	99	.dev = {
	100	.platform_data = &nslu2_i2c_gpio_data,
	101	},
a7918f39 AZ	102	};
a7918f39 AZ	103
bc66d449 AZ	104	static struct platform_device nslu2_beeper = {
	105	.name = "ixp4xx-beeper",
	106	.id = NSLU2_GPIO_BUZZ,
	107	.num_resources = 0,
	108	};
	109
a7918f39 AZ	110	static struct resource nslu2_uart_resources[] = {
	111	{
	112	.start = IXP4XX_UART1_BASE_PHYS,
	113	.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
	114	.flags = IORESOURCE_MEM,
	115	},
	116	{
	117	.start = IXP4XX_UART2_BASE_PHYS,
	118	.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
	119	.flags = IORESOURCE_MEM,
	120	}
	121	};
	122
	123	static struct plat_serial8250_port nslu2_uart_data[] = {
	124	{
	125	.mapbase = IXP4XX_UART1_BASE_PHYS,
	126	.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
	127	.irq = IRQ_IXP4XX_UART1,
	128	.flags = UPF_BOOT_AUTOCONF,
	129	.iotype = UPIO_MEM,
	130	.regshift = 2,
	131	.uartclk = IXP4XX_UART_XTAL,
	132	},
	133	{
	134	.mapbase = IXP4XX_UART2_BASE_PHYS,
	135	.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
	136	.irq = IRQ_IXP4XX_UART2,
	137	.flags = UPF_BOOT_AUTOCONF,
	138	.iotype = UPIO_MEM,
	139	.regshift = 2,
	140	.uartclk = IXP4XX_UART_XTAL,
	141	},
	142	{ }
	143	};
	144
	145	static struct platform_device nslu2_uart = {
	146	.name = "serial8250",
	147	.id = PLAT8250_DEV_PLATFORM,
	148	.dev.platform_data = nslu2_uart_data,
	149	.num_resources = 2,
	150	.resource = nslu2_uart_resources,
	151	};
	152
b7edc84a RW	153	/* Built-in 10/100 Ethernet MAC interfaces */
	154	static struct eth_plat_info nslu2_plat_eth[] = {
	155	{
	156	.phy = 1,
	157	.rxq = 3,
	158	.txreadyq = 20,
	159	}
	160	};
	161
	162	static struct platform_device nslu2_eth[] = {
	163	{
	164	.name = "ixp4xx_eth",
	165	.id = IXP4XX_ETH_NPEB,
	166	.dev.platform_data = nslu2_plat_eth,
	167	}
	168	};
	169
a7918f39	170	static struct platform_device *nslu2_devices[] __initdata = {
5a4a2387	171	&nslu2_i2c_gpio,
a7918f39	172	&nslu2_flash,
bc66d449	173	&nslu2_beeper,
e22b04fb	174	&nslu2_leds,
b7edc84a	175	&nslu2_eth[0],
a7918f39 AZ	176	};
	177
	178	static void nslu2_power_off(void)
	179	{
	180	/* This causes the box to drop the power and go dead. */
	181
	182	/* enable the pwr cntl gpio */
	183	gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
	184
	185	/* do the deed */
	186	gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
	187	}
	188
0929ac3e RW	189	static irqreturn_t nslu2_power_handler(int irq, void *dev_id)
	190	{
	191	/* Signal init to do the ctrlaltdel action, this will bypass init if
	192	* it hasn't started and do a kernel_restart.
	193	*/
	194	ctrl_alt_del();
	195
	196	return IRQ_HANDLED;
	197	}
	198
	199	static irqreturn_t nslu2_reset_handler(int irq, void *dev_id)
	200	{
	201	/* This is the paper-clip reset, it shuts the machine down directly.
	202	*/
	203	machine_power_off();
	204
	205	return IRQ_HANDLED;
	206	}
	207
435c5da0	208	static void __init nslu2_timer_init(void)
a7918f39	209	{
435c5da0 MLJ	210	/* The xtal on this machine is non-standard. */
	211	ixp4xx_timer_freq = NSLU2_FREQ;
	212
	213	/* Call standard timer_init function. */
	214	ixp4xx_timer_init();
	215	}
84904d0e	216
435c5da0 MLJ	217	static struct sys_timer nslu2_timer = {
	218	.init = nslu2_timer_init,
	219	};
	220
	221	static void __init nslu2_init(void)
	222	{
b7edc84a RW	223	uint8_t __iomem *f;
	224	int i;
	225
a7918f39 AZ	226	ixp4xx_sys_init();
a7918f39 AZ	227
3dfaf7a6 MM	228	nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
	229	nslu2_flash_resource.end =
	230	IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
	231
e28067d5 RW	232	i2c_register_board_info(0, nslu2_i2c_board_info,
	233	ARRAY_SIZE(nslu2_i2c_board_info));
	234
cc50a0df MLJ	235	/*
cc50a0df MLJ	236	* This is only useful on a modified machine, but it is valuable
e22b04fb RW	237	* to have it first in order to see debug messages, and so that
	238	* it does not get removed if platform_add_devices fails!
	239	*/
	240	(void)platform_device_register(&nslu2_uart);
	241
a7918f39	242	platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
b7edc84a	243
0929ac3e RW	244	pm_power_off = nslu2_power_off;
	245
	246	if (request_irq(gpio_to_irq(NSLU2_RB_GPIO), &nslu2_reset_handler,
	247	IRQF_DISABLED \| IRQF_TRIGGER_LOW,
	248	"NSLU2 reset button", NULL) < 0) {
	249
	250	printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
	251	gpio_to_irq(NSLU2_RB_GPIO));
	252	}
	253
	254	if (request_irq(gpio_to_irq(NSLU2_PB_GPIO), &nslu2_power_handler,
	255	IRQF_DISABLED \| IRQF_TRIGGER_HIGH,
	256	"NSLU2 power button", NULL) < 0) {
	257
	258	printk(KERN_DEBUG "Power Button IRQ %d not available\n",
	259	gpio_to_irq(NSLU2_PB_GPIO));
	260	}
b7edc84a RW	261
	262	/*
	263	* Map in a portion of the flash and read the MAC address.
	264	* Since it is stored in BE in the flash itself, we need to
	265	* byteswap it if we're in LE mode.
	266	*/
	267	f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x40000);
	268	if (f) {
	269	for (i = 0; i < 6; i++)
	270	#ifdef __ARMEB__
	271	nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + i);
	272	#else
	273	nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + (i^3));
	274	#endif
	275	iounmap(f);
	276	}
e174961c JB	277	printk(KERN_INFO "NSLU2: Using MAC address %pM for port 0\n",
e174961c JB	278	nslu2_plat_eth[0].hwaddr);
b7edc84a	279
a7918f39 AZ	280	}
	281
	282	MACHINE_START(NSLU2, "Linksys NSLU2")
	283	/* Maintainer: www.nslu2-linux.org */
a7918f39 AZ	284	.phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
	285	.io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
	286	.boot_params = 0x00000100,
	287	.map_io = ixp4xx_map_io,
	288	.init_irq = ixp4xx_init_irq,
435c5da0	289	.timer = &nslu2_timer,
a7918f39 AZ	290	.init_machine = nslu2_init,
a7918f39 AZ	291	MACHINE_END