[thirdparty/linux.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/gpio.h>
#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>

#define NSLU2_SDA_PIN		7
#define NSLU2_SCL_PIN		6

/* NSLU2 Timer */
#define NSLU2_FREQ 66000000

/* Buttons */
#define NSLU2_PB_GPIO		5	/* power button */
#define NSLU2_PO_GPIO		8	/* power off */
#define NSLU2_RB_GPIO		12	/* reset button */

/* Buzzer */
#define NSLU2_GPIO_BUZZ		4

/* LEDs */
#define NSLU2_LED_RED_GPIO	0
#define NSLU2_LED_GRN_GPIO	1
#define NSLU2_LED_DISK1_GPIO	3
#define NSLU2_LED_DISK2_GPIO	2

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 */
	.atag_offset	= 0x100,
	.map_io		= ixp4xx_map_io,
	.init_irq	= ixp4xx_init_irq,
	.timer          = &nslu2_timer,
	.init_machine	= nslu2_init,
#if defined(CONFIG_PCI)
	.dma_zone_size	= SZ_64M,
#endif
	.restart	= ixp4xx_restart,
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	18	*/
2f8163ba	19	#include <linux/gpio.h>
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	#include <asm/mach-types.h>
	30	#include <asm/mach/arch.h>
	31	#include <asm/mach/flash.h>
435c5da0	32	#include <asm/mach/time.h>
a7918f39	33
c1117c63 KH	34	#define NSLU2_SDA_PIN 7
	35	#define NSLU2_SCL_PIN 6
	36
	37	/* NSLU2 Timer */
	38	#define NSLU2_FREQ 66000000
	39
	40	/* Buttons */
	41	#define NSLU2_PB_GPIO 5 /* power button */
	42	#define NSLU2_PO_GPIO 8 /* power off */
	43	#define NSLU2_RB_GPIO 12 /* reset button */
	44
	45	/* Buzzer */
	46	#define NSLU2_GPIO_BUZZ 4
	47
	48	/* LEDs */
	49	#define NSLU2_LED_RED_GPIO 0
	50	#define NSLU2_LED_GRN_GPIO 1
	51	#define NSLU2_LED_DISK1_GPIO 3
	52	#define NSLU2_LED_DISK2_GPIO 2
	53
a7918f39 AZ	54	static struct flash_platform_data nslu2_flash_data = {
	55	.map_name = "cfi_probe",
	56	.width = 2,
	57	};
	58
	59	static struct resource nslu2_flash_resource = {
a7918f39 AZ	60	.flags = IORESOURCE_MEM,
	61	};
	62
	63	static struct platform_device nslu2_flash = {
	64	.name = "IXP4XX-Flash",
	65	.id = 0,
	66	.dev.platform_data = &nslu2_flash_data,
	67	.num_resources = 1,
	68	.resource = &nslu2_flash_resource,
	69	};
	70
5a4a2387	71	static struct i2c_gpio_platform_data nslu2_i2c_gpio_data = {
a7918f39 AZ	72	.sda_pin = NSLU2_SDA_PIN,
	73	.scl_pin = NSLU2_SCL_PIN,
	74	};
	75
e28067d5 RW	76	static struct i2c_board_info __initdata nslu2_i2c_board_info [] = {
e28067d5 RW	77	{
3760f736	78	I2C_BOARD_INFO("x1205", 0x6f),
e28067d5 RW	79	},
	80	};
	81
1208ebf2	82	static struct gpio_led nslu2_led_pins[] = {
e22b04fb	83	{
6c152bee	84	.name = "nslu2:green:ready",
1208ebf2	85	.gpio = NSLU2_LED_GRN_GPIO,
e22b04fb RW	86	},
e22b04fb RW	87	{
6c152bee	88	.name = "nslu2:red:status",
1208ebf2	89	.gpio = NSLU2_LED_RED_GPIO,
e22b04fb RW	90	},
e22b04fb RW	91	{
6c152bee	92	.name = "nslu2:green:disk-1",
1208ebf2 RW	93	.gpio = NSLU2_LED_DISK1_GPIO,
1208ebf2 RW	94	.active_low = true,
e22b04fb RW	95	},
e22b04fb RW	96	{
6c152bee	97	.name = "nslu2:green:disk-2",
1208ebf2 RW	98	.gpio = NSLU2_LED_DISK2_GPIO,
1208ebf2 RW	99	.active_low = true,
e22b04fb RW	100	},
	101	};
	102
1208ebf2 RW	103	static struct gpio_led_platform_data nslu2_led_data = {
	104	.num_leds = ARRAY_SIZE(nslu2_led_pins),
	105	.leds = nslu2_led_pins,
	106	};
	107
e22b04fb	108	static struct platform_device nslu2_leds = {
1208ebf2	109	.name = "leds-gpio",
e22b04fb	110	.id = -1,
1208ebf2	111	.dev.platform_data = &nslu2_led_data,
e22b04fb	112	};
e22b04fb	113
5a4a2387 MLJ	114	static struct platform_device nslu2_i2c_gpio = {
5a4a2387 MLJ	115	.name = "i2c-gpio",
a7918f39	116	.id = 0,
5a4a2387 MLJ	117	.dev = {
	118	.platform_data = &nslu2_i2c_gpio_data,
	119	},
a7918f39 AZ	120	};
a7918f39 AZ	121
bc66d449 AZ	122	static struct platform_device nslu2_beeper = {
	123	.name = "ixp4xx-beeper",
	124	.id = NSLU2_GPIO_BUZZ,
	125	.num_resources = 0,
	126	};
	127
a7918f39 AZ	128	static struct resource nslu2_uart_resources[] = {
	129	{
	130	.start = IXP4XX_UART1_BASE_PHYS,
	131	.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
	132	.flags = IORESOURCE_MEM,
	133	},
	134	{
	135	.start = IXP4XX_UART2_BASE_PHYS,
	136	.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
	137	.flags = IORESOURCE_MEM,
	138	}
	139	};
	140
	141	static struct plat_serial8250_port nslu2_uart_data[] = {
	142	{
	143	.mapbase = IXP4XX_UART1_BASE_PHYS,
	144	.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
	145	.irq = IRQ_IXP4XX_UART1,
	146	.flags = UPF_BOOT_AUTOCONF,
	147	.iotype = UPIO_MEM,
	148	.regshift = 2,
	149	.uartclk = IXP4XX_UART_XTAL,
	150	},
	151	{
	152	.mapbase = IXP4XX_UART2_BASE_PHYS,
	153	.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
	154	.irq = IRQ_IXP4XX_UART2,
	155	.flags = UPF_BOOT_AUTOCONF,
	156	.iotype = UPIO_MEM,
	157	.regshift = 2,
	158	.uartclk = IXP4XX_UART_XTAL,
	159	},
	160	{ }
	161	};
	162
	163	static struct platform_device nslu2_uart = {
	164	.name = "serial8250",
	165	.id = PLAT8250_DEV_PLATFORM,
	166	.dev.platform_data = nslu2_uart_data,
	167	.num_resources = 2,
	168	.resource = nslu2_uart_resources,
	169	};
	170
b7edc84a RW	171	/* Built-in 10/100 Ethernet MAC interfaces */
	172	static struct eth_plat_info nslu2_plat_eth[] = {
	173	{
	174	.phy = 1,
	175	.rxq = 3,
	176	.txreadyq = 20,
	177	}
	178	};
	179
	180	static struct platform_device nslu2_eth[] = {
	181	{
	182	.name = "ixp4xx_eth",
	183	.id = IXP4XX_ETH_NPEB,
	184	.dev.platform_data = nslu2_plat_eth,
	185	}
	186	};
	187
a7918f39	188	static struct platform_device *nslu2_devices[] __initdata = {
5a4a2387	189	&nslu2_i2c_gpio,
a7918f39	190	&nslu2_flash,
bc66d449	191	&nslu2_beeper,
e22b04fb	192	&nslu2_leds,
b7edc84a	193	&nslu2_eth[0],
a7918f39 AZ	194	};
	195
	196	static void nslu2_power_off(void)
	197	{
	198	/* This causes the box to drop the power and go dead. */
	199
	200	/* enable the pwr cntl gpio */
	201	gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
	202
	203	/* do the deed */
	204	gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
	205	}
	206
0929ac3e RW	207	static irqreturn_t nslu2_power_handler(int irq, void *dev_id)
	208	{
	209	/* Signal init to do the ctrlaltdel action, this will bypass init if
	210	* it hasn't started and do a kernel_restart.
	211	*/
	212	ctrl_alt_del();
	213
	214	return IRQ_HANDLED;
	215	}
	216
	217	static irqreturn_t nslu2_reset_handler(int irq, void *dev_id)
	218	{
	219	/* This is the paper-clip reset, it shuts the machine down directly.
	220	*/
	221	machine_power_off();
	222
	223	return IRQ_HANDLED;
	224	}
	225
435c5da0	226	static void __init nslu2_timer_init(void)
a7918f39	227	{
435c5da0 MLJ	228	/* The xtal on this machine is non-standard. */
	229	ixp4xx_timer_freq = NSLU2_FREQ;
	230
	231	/* Call standard timer_init function. */
	232	ixp4xx_timer_init();
	233	}
84904d0e	234
435c5da0 MLJ	235	static struct sys_timer nslu2_timer = {
	236	.init = nslu2_timer_init,
	237	};
	238
	239	static void __init nslu2_init(void)
	240	{
b7edc84a RW	241	uint8_t __iomem *f;
	242	int i;
	243
a7918f39 AZ	244	ixp4xx_sys_init();
a7918f39 AZ	245
3dfaf7a6 MM	246	nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
	247	nslu2_flash_resource.end =
	248	IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
	249
e28067d5 RW	250	i2c_register_board_info(0, nslu2_i2c_board_info,
	251	ARRAY_SIZE(nslu2_i2c_board_info));
	252
cc50a0df MLJ	253	/*
cc50a0df MLJ	254	* This is only useful on a modified machine, but it is valuable
e22b04fb RW	255	* to have it first in order to see debug messages, and so that
	256	* it does not get removed if platform_add_devices fails!
	257	*/
	258	(void)platform_device_register(&nslu2_uart);
	259
a7918f39	260	platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
b7edc84a	261
0929ac3e RW	262	pm_power_off = nslu2_power_off;
	263
	264	if (request_irq(gpio_to_irq(NSLU2_RB_GPIO), &nslu2_reset_handler,
	265	IRQF_DISABLED \| IRQF_TRIGGER_LOW,
	266	"NSLU2 reset button", NULL) < 0) {
	267
	268	printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
	269	gpio_to_irq(NSLU2_RB_GPIO));
	270	}
	271
	272	if (request_irq(gpio_to_irq(NSLU2_PB_GPIO), &nslu2_power_handler,
	273	IRQF_DISABLED \| IRQF_TRIGGER_HIGH,
	274	"NSLU2 power button", NULL) < 0) {
	275
	276	printk(KERN_DEBUG "Power Button IRQ %d not available\n",
	277	gpio_to_irq(NSLU2_PB_GPIO));
	278	}
b7edc84a RW	279
	280	/*
	281	* Map in a portion of the flash and read the MAC address.
	282	* Since it is stored in BE in the flash itself, we need to
	283	* byteswap it if we're in LE mode.
	284	*/
	285	f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x40000);
	286	if (f) {
	287	for (i = 0; i < 6; i++)
	288	#ifdef __ARMEB__
	289	nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + i);
	290	#else
	291	nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + (i^3));
	292	#endif
	293	iounmap(f);
	294	}
e174961c JB	295	printk(KERN_INFO "NSLU2: Using MAC address %pM for port 0\n",
e174961c JB	296	nslu2_plat_eth[0].hwaddr);
b7edc84a	297
a7918f39 AZ	298	}
	299
	300	MACHINE_START(NSLU2, "Linksys NSLU2")
	301	/* Maintainer: www.nslu2-linux.org */
e022c729	302	.atag_offset = 0x100,
a7918f39 AZ	303	.map_io = ixp4xx_map_io,
a7918f39 AZ	304	.init_irq = ixp4xx_init_irq,
435c5da0	305	.timer = &nslu2_timer,
a7918f39	306	.init_machine = nslu2_init,
7553ee77 NP	307	#if defined(CONFIG_PCI)
	308	.dma_zone_size = SZ_64M,
	309	#endif
d1b860fb	310	.restart = ixp4xx_restart,
a7918f39	311	MACHINE_END