[linux-2.6-block.git] / arch / arm / mach-ixp4xx / fsg-setup.c

/*
 * arch/arm/mach-ixp4xx/fsg-setup.c
 *
 * FSG 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: Rod Whitby <rod@whitby.id.au>
 * 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>

#define FSG_SDA_PIN		12
#define FSG_SCL_PIN		13

#define FSG_SB_GPIO		4	/* sync button */
#define FSG_RB_GPIO		9	/* reset button */
#define FSG_UB_GPIO		10	/* usb button */

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

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

static struct platform_device fsg_flash = {
	.name			= "IXP4XX-Flash",
	.id			= 0,
	.dev = {
		.platform_data	= &fsg_flash_data,
	},
	.num_resources		= 1,
	.resource		= &fsg_flash_resource,
};

static struct i2c_gpio_platform_data fsg_i2c_gpio_data = {
	.sda_pin		= FSG_SDA_PIN,
	.scl_pin		= FSG_SCL_PIN,
};

static struct platform_device fsg_i2c_gpio = {
	.name			= "i2c-gpio",
	.id			= 0,
	.dev = {
		.platform_data	= &fsg_i2c_gpio_data,
	},
};

static struct i2c_board_info __initdata fsg_i2c_board_info [] = {
	{
		I2C_BOARD_INFO("isl1208", 0x6f),
	},
};

static struct resource fsg_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 fsg_uart_data[] = {
	{
		.mapbase	= IXP4XX_UART1_BASE_PHYS,
		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
		.irq		= IRQ_IXP4XX_UART1,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.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 | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
		.regshift	= 2,
		.uartclk	= IXP4XX_UART_XTAL,
	},
	{ }
};

static struct platform_device fsg_uart = {
	.name			= "serial8250",
	.id			= PLAT8250_DEV_PLATFORM,
	.dev = {
		.platform_data	= fsg_uart_data,
	},
	.num_resources		= ARRAY_SIZE(fsg_uart_resources),
	.resource		= fsg_uart_resources,
};

static struct platform_device fsg_leds = {
	.name		= "fsg-led",
	.id		= -1,
};

/* Built-in 10/100 Ethernet MAC interfaces */
static struct eth_plat_info fsg_plat_eth[] = {
	{
		.phy		= 5,
		.rxq		= 3,
		.txreadyq	= 20,
	}, {
		.phy		= 4,
		.rxq		= 4,
		.txreadyq	= 21,
	}
};

static struct platform_device fsg_eth[] = {
	{
		.name			= "ixp4xx_eth",
		.id			= IXP4XX_ETH_NPEB,
		.dev = {
			.platform_data	= fsg_plat_eth,
		},
	}, {
		.name			= "ixp4xx_eth",
		.id			= IXP4XX_ETH_NPEC,
		.dev = {
			.platform_data	= fsg_plat_eth + 1,
		},
	}
};

static struct platform_device *fsg_devices[] __initdata = {
	&fsg_i2c_gpio,
	&fsg_flash,
	&fsg_leds,
	&fsg_eth[0],
	&fsg_eth[1],
};

static irqreturn_t fsg_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 fsg_reset_handler(int irq, void *dev_id)
{
	/* This is the paper-clip reset which does an emergency reboot. */
	printk(KERN_INFO "Restarting system.\n");
	machine_restart(NULL);

	/* This should never be reached. */
	return IRQ_HANDLED;
}

static void __init fsg_init(void)
{
	uint8_t __iomem *f;

	ixp4xx_sys_init();

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

	*IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
	*IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;

	/* Configure CS2 for operation, 8bit and writable */
	*IXP4XX_EXP_CS2 = 0xbfff0002;

	i2c_register_board_info(0, fsg_i2c_board_info,
				ARRAY_SIZE(fsg_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(&fsg_uart);

	platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));

	if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,
			IRQF_TRIGGER_LOW, "FSG reset button", NULL) < 0) {

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

	if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,
			IRQF_TRIGGER_LOW, "FSG power button", NULL) < 0) {

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

	/*
	 * Map in a portion of the flash and read the MAC addresses.
	 * 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), 0x400000);
	if (f) {
#ifdef __ARMEB__
		int i;
		for (i = 0; i < 6; i++) {
			fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);
			fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);
		}
#else

		/*
		  Endian-swapped reads from unaligned addresses are
		  required to extract the two MACs from the big-endian
		  Redboot config area in flash.
		*/

		fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0421);
		fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0420);
		fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0427);
		fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0426);
		fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0425);
		fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0424);

		fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0439);
		fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C043F);
		fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C043E);
		fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C043D);
		fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C043C);
		fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0443);
#endif
		iounmap(f);
	}
	printk(KERN_INFO "FSG: Using MAC address %pM for port 0\n",
	       fsg_plat_eth[0].hwaddr);
	printk(KERN_INFO "FSG: Using MAC address %pM for port 1\n",
	       fsg_plat_eth[1].hwaddr);

}

MACHINE_START(FSG, "Freecom FSG-3")
	/* Maintainer: www.nslu2-linux.org */
	.map_io		= ixp4xx_map_io,
	.init_early	= ixp4xx_init_early,
	.init_irq	= ixp4xx_init_irq,
	.init_time	= ixp4xx_timer_init,
	.atag_offset	= 0x100,
	.init_machine	= fsg_init,
#if defined(CONFIG_PCI)
	.dma_zone_size	= SZ_64M,
#endif
	.restart	= ixp4xx_restart,
MACHINE_END
Commit	Line	Data
7e36e2f5 RW	1	/*
	2	* arch/arm/mach-ixp4xx/fsg-setup.c
	3	*
	4	* FSG board-setup
	5	*
	6	* Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
	7	*
	8	* based on ixdp425-setup.c:
	9	* Copyright (C) 2003-2004 MontaVista Software, Inc.
	10	* based on nslu2-power.c
	11	* Copyright (C) 2005 Tower Technologies
	12	*
	13	* Author: Rod Whitby <rod@whitby.id.au>
	14	* Maintainers: http://www.nslu2-linux.org/
	15	*
	16	*/
2f8163ba	17	#include <linux/gpio.h>
7e36e2f5 RW	18	#include <linux/if_ether.h>
	19	#include <linux/irq.h>
	20	#include <linux/serial.h>
	21	#include <linux/serial_8250.h>
	22	#include <linux/leds.h>
	23	#include <linux/reboot.h>
	24	#include <linux/i2c.h>
	25	#include <linux/i2c-gpio.h>
fced80c7	26	#include <linux/io.h>
7e36e2f5 RW	27	#include <asm/mach-types.h>
	28	#include <asm/mach/arch.h>
	29	#include <asm/mach/flash.h>
7e36e2f5	30
914e7bc2 KH	31	#define FSG_SDA_PIN 12
	32	#define FSG_SCL_PIN 13
	33
	34	#define FSG_SB_GPIO 4 /* sync button */
	35	#define FSG_RB_GPIO 9 /* reset button */
	36	#define FSG_UB_GPIO 10 /* usb button */
	37
7e36e2f5 RW	38	static struct flash_platform_data fsg_flash_data = {
	39	.map_name = "cfi_probe",
	40	.width = 2,
	41	};
	42
	43	static struct resource fsg_flash_resource = {
	44	.flags = IORESOURCE_MEM,
	45	};
	46
	47	static struct platform_device fsg_flash = {
	48	.name = "IXP4XX-Flash",
	49	.id = 0,
	50	.dev = {
	51	.platform_data = &fsg_flash_data,
	52	},
	53	.num_resources = 1,
	54	.resource = &fsg_flash_resource,
	55	};
	56
	57	static struct i2c_gpio_platform_data fsg_i2c_gpio_data = {
	58	.sda_pin = FSG_SDA_PIN,
	59	.scl_pin = FSG_SCL_PIN,
	60	};
	61
	62	static struct platform_device fsg_i2c_gpio = {
	63	.name = "i2c-gpio",
	64	.id = 0,
	65	.dev = {
	66	.platform_data = &fsg_i2c_gpio_data,
	67	},
	68	};
	69
	70	static struct i2c_board_info __initdata fsg_i2c_board_info [] = {
	71	{
d90c1add	72	I2C_BOARD_INFO("isl1208", 0x6f),
7e36e2f5 RW	73	},
	74	};
	75
	76	static struct resource fsg_uart_resources[] = {
	77	{
	78	.start = IXP4XX_UART1_BASE_PHYS,
	79	.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
	80	.flags = IORESOURCE_MEM,
	81	},
	82	{
	83	.start = IXP4XX_UART2_BASE_PHYS,
	84	.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
	85	.flags = IORESOURCE_MEM,
	86	}
	87	};
	88
	89	static struct plat_serial8250_port fsg_uart_data[] = {
	90	{
	91	.mapbase = IXP4XX_UART1_BASE_PHYS,
	92	.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
	93	.irq = IRQ_IXP4XX_UART1,
	94	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST,
	95	.iotype = UPIO_MEM,
	96	.regshift = 2,
	97	.uartclk = IXP4XX_UART_XTAL,
	98	},
	99	{
	100	.mapbase = IXP4XX_UART2_BASE_PHYS,
	101	.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
	102	.irq = IRQ_IXP4XX_UART2,
	103	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST,
	104	.iotype = UPIO_MEM,
	105	.regshift = 2,
	106	.uartclk = IXP4XX_UART_XTAL,
	107	},
	108	{ }
	109	};
	110
	111	static struct platform_device fsg_uart = {
	112	.name = "serial8250",
	113	.id = PLAT8250_DEV_PLATFORM,
	114	.dev = {
	115	.platform_data = fsg_uart_data,
	116	},
	117	.num_resources = ARRAY_SIZE(fsg_uart_resources),
	118	.resource = fsg_uart_resources,
	119	};
	120
	121	static struct platform_device fsg_leds = {
	122	.name = "fsg-led",
	123	.id = -1,
	124	};
	125
	126	/* Built-in 10/100 Ethernet MAC interfaces */
	127	static struct eth_plat_info fsg_plat_eth[] = {
	128	{
	129	.phy = 5,
	130	.rxq = 3,
	131	.txreadyq = 20,
	132	}, {
	133	.phy = 4,
	134	.rxq = 4,
	135	.txreadyq = 21,
	136	}
137	};
138
139	static struct platform_device fsg_eth[] = {
140	{
141	.name = "ixp4xx_eth",
142	.id = IXP4XX_ETH_NPEB,
143	.dev = {
144	.platform_data = fsg_plat_eth,
145	},
146	}, {
147	.name = "ixp4xx_eth",
148	.id = IXP4XX_ETH_NPEC,
149	.dev = {
150	.platform_data = fsg_plat_eth + 1,
151	},
152	}
153	};
154
155	static struct platform_device *fsg_devices[] __initdata = {
156	&fsg_i2c_gpio,
157	&fsg_flash,
158	&fsg_leds,
159	&fsg_eth[0],
160	&fsg_eth[1],
161	};
162
163	static irqreturn_t fsg_power_handler(int irq, void *dev_id)
164	{
165	/* Signal init to do the ctrlaltdel action, this will bypass init if
166	* it hasn't started and do a kernel_restart.
167	*/
168	ctrl_alt_del();
169
170	return IRQ_HANDLED;
171	}
172
173	static irqreturn_t fsg_reset_handler(int irq, void *dev_id)
174	{
175	/* This is the paper-clip reset which does an emergency reboot. */
176	printk(KERN_INFO "Restarting system.\n");
177	machine_restart(NULL);
178
179	/* This should never be reached. */
180	return IRQ_HANDLED;
181	}
182
183	static void __init fsg_init(void)
184	{
7e36e2f5	185	uint8_t __iomem *f;
7e36e2f5 RW	186
	187	ixp4xx_sys_init();
	188
	189	fsg_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
	190	fsg_flash_resource.end =
	191	IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
	192
	193	*IXP4XX_EXP_CS0 \|= IXP4XX_FLASH_WRITABLE;
	194	IXP4XX_EXP_CS1 = IXP4XX_EXP_CS0;
	195
	196	/* Configure CS2 for operation, 8bit and writable */
	197	*IXP4XX_EXP_CS2 = 0xbfff0002;
	198
	199	i2c_register_board_info(0, fsg_i2c_board_info,
	200	ARRAY_SIZE(fsg_i2c_board_info));
	201
	202	/* This is only useful on a modified machine, but it is valuable
	203	* to have it first in order to see debug messages, and so that
	204	* it does not get removed if platform_add_devices fails!
	205	*/
	206	(void)platform_device_register(&fsg_uart);
	207
	208	platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));
	209
	210	if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,
1ee6564d	211	IRQF_TRIGGER_LOW, "FSG reset button", NULL) < 0) {
7e36e2f5 RW	212
	213	printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
	214	gpio_to_irq(FSG_RB_GPIO));
	215	}
	216
	217	if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,
1ee6564d	218	IRQF_TRIGGER_LOW, "FSG power button", NULL) < 0) {
7e36e2f5 RW	219
	220	printk(KERN_DEBUG "Power Button IRQ %d not available\n",
	221	gpio_to_irq(FSG_SB_GPIO));
	222	}
	223
	224	/*
	225	* Map in a portion of the flash and read the MAC addresses.
	226	* Since it is stored in BE in the flash itself, we need to
	227	* byteswap it if we're in LE mode.
	228	*/
	229	f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x400000);
	230	if (f) {
	231	#ifdef __ARMEB__
d90c1add	232	int i;
7e36e2f5 RW	233	for (i = 0; i < 6; i++) {
	234	fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);
	235	fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);
	236	}
	237	#else
	238
	239	/*
	240	Endian-swapped reads from unaligned addresses are
	241	required to extract the two MACs from the big-endian
	242	Redboot config area in flash.
	243	*/
	244
	245	fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0421);
	246	fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0420);
	247	fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0427);
	248	fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0426);
	249	fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0425);
	250	fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0424);
	251
	252	fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0439);
	253	fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C043F);
	254	fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C043E);
	255	fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C043D);
	256	fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C043C);
	257	fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0443);
	258	#endif
	259	iounmap(f);
	260	}
e174961c JB	261	printk(KERN_INFO "FSG: Using MAC address %pM for port 0\n",
	262	fsg_plat_eth[0].hwaddr);
	263	printk(KERN_INFO "FSG: Using MAC address %pM for port 1\n",
	264	fsg_plat_eth[1].hwaddr);
7e36e2f5 RW	265
	266	}
	267
	268	MACHINE_START(FSG, "Freecom FSG-3")
	269	/* Maintainer: www.nslu2-linux.org */
7e36e2f5	270	.map_io = ixp4xx_map_io,
f449588c	271	.init_early = ixp4xx_init_early,
7e36e2f5	272	.init_irq = ixp4xx_init_irq,
6bb27d73	273	.init_time = ixp4xx_timer_init,
e022c729	274	.atag_offset = 0x100,
7e36e2f5	275	.init_machine = fsg_init,
7553ee77 NP	276	#if defined(CONFIG_PCI)
	277	.dma_zone_size = SZ_64M,
	278	#endif
d1b860fb	279	.restart = ixp4xx_restart,
7e36e2f5 RW	280	MACHINE_END
7e36e2f5 RW	281