[linux-2.6-block.git] / arch / arm / mach-iop32x / n2100.c

/*
 * arch/arm/mach-iop32x/n2100.c
 *
 * Board support code for the Thecus N2100 platform.
 *
 * Author: Rory Bolt <rorybolt@pacbell.net>
 * Copyright (C) 2002 Rory Bolt
 * Copyright 2003 (c) MontaVista, Software, Inc.
 * Copyright (C) 2004 Intel Corp.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <linux/f75375s.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/pci.h>
#include <asm/mach/time.h>
#include <asm/mach-types.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/arch/time.h>

/*
 * N2100 timer tick configuration.
 */
static void __init n2100_timer_init(void)
{
	/* 33.000 MHz crystal.  */
	iop_init_time(198000000);
}

static struct sys_timer n2100_timer = {
	.init		= n2100_timer_init,
	.offset		= iop_gettimeoffset,
};


/*
 * N2100 I/O.
 */
static struct map_desc n2100_io_desc[] __initdata = {
	{	/* on-board devices */
		.virtual	= N2100_UART,
		.pfn		= __phys_to_pfn(N2100_UART),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	},
};

void __init n2100_map_io(void)
{
	iop3xx_map_io();
	iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
}


/*
 * N2100 PCI.
 */
static int __init
n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
	int irq;

	if (PCI_SLOT(dev->devfn) == 1) {
		/* RTL8110SB #1 */
		irq = IRQ_IOP32X_XINT0;
	} else if (PCI_SLOT(dev->devfn) == 2) {
		/* RTL8110SB #2 */
		irq = IRQ_IOP32X_XINT3;
	} else if (PCI_SLOT(dev->devfn) == 3) {
		/* Sil3512 */
		irq = IRQ_IOP32X_XINT2;
	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
		/* VT6212 INTA */
		irq = IRQ_IOP32X_XINT1;
	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
		/* VT6212 INTB */
		irq = IRQ_IOP32X_XINT0;
	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
		/* VT6212 INTC */
		irq = IRQ_IOP32X_XINT2;
	} else if (PCI_SLOT(dev->devfn) == 5) {
		/* Mini-PCI slot */
		irq = IRQ_IOP32X_XINT3;
	} else {
		printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
			"device PCI:%d:%d:%d\n", dev->bus->number,
			PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
		irq = -1;
	}

	return irq;
}

static struct hw_pci n2100_pci __initdata = {
	.swizzle	= pci_std_swizzle,
	.nr_controllers = 1,
	.setup		= iop3xx_pci_setup,
	.preinit	= iop3xx_pci_preinit,
	.scan		= iop3xx_pci_scan_bus,
	.map_irq	= n2100_pci_map_irq,
};

/*
 * Both r8169 chips on the n2100 exhibit PCI parity problems.  Set
 * the ->broken_parity_status flag for both ports so that the r8169
 * driver knows it should ignore error interrupts.
 */
static void n2100_fixup_r8169(struct pci_dev *dev)
{
	if (dev->bus->number == 0 &&
	    (dev->devfn == PCI_DEVFN(1, 0) ||
	     dev->devfn == PCI_DEVFN(2, 0)))
		dev->broken_parity_status = 1;
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);

static int __init n2100_pci_init(void)
{
	if (machine_is_n2100())
		pci_common_init(&n2100_pci);

	return 0;
}

subsys_initcall(n2100_pci_init);


/*
 * N2100 machine initialisation.
 */
static struct physmap_flash_data n2100_flash_data = {
	.width		= 2,
};

static struct resource n2100_flash_resource = {
	.start		= 0xf0000000,
	.end		= 0xf0ffffff,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device n2100_flash_device = {
	.name		= "physmap-flash",
	.id		= 0,
	.dev		= {
		.platform_data	= &n2100_flash_data,
	},
	.num_resources	= 1,
	.resource	= &n2100_flash_resource,
};


static struct plat_serial8250_port n2100_serial_port[] = {
	{
		.mapbase	= N2100_UART,
		.membase	= (char *)N2100_UART,
		.irq		= 0,
		.flags		= UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
		.regshift	= 0,
		.uartclk	= 1843200,
	},
	{ },
};

static struct resource n2100_uart_resource = {
	.start		= N2100_UART,
	.end		= N2100_UART + 7,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device n2100_serial_device = {
	.name		= "serial8250",
	.id		= PLAT8250_DEV_PLATFORM,
	.dev		= {
		.platform_data		= n2100_serial_port,
	},
	.num_resources	= 1,
	.resource	= &n2100_uart_resource,
};

static struct f75375s_platform_data n2100_f75375s = {
	.pwm		= { 255, 255 },
	.pwm_enable = { 0, 0 },
};

static struct i2c_board_info __initdata n2100_i2c_devices[] = {
	{
		I2C_BOARD_INFO("rs5c372b", 0x32),
	},
	{
		I2C_BOARD_INFO("f75375", 0x2e),
		.platform_data = &n2100_f75375s,
	},
};

/*
 * Pull PCA9532 GPIO #8 low to power off the machine.
 */
static void n2100_power_off(void)
{
	local_irq_disable();

	/* Start condition, I2C address of PCA9532, write transaction.  */
	*IOP3XX_IDBR0 = 0xc0;
	*IOP3XX_ICR0 = 0xe9;
	mdelay(1);

	/* Write address 0x08.  */
	*IOP3XX_IDBR0 = 0x08;
	*IOP3XX_ICR0 = 0xe8;
	mdelay(1);

	/* Write data 0x01, stop condition.  */
	*IOP3XX_IDBR0 = 0x01;
	*IOP3XX_ICR0 = 0xea;

	while (1)
		;
}


static struct timer_list power_button_poll_timer;

static void power_button_poll(unsigned long dummy)
{
	if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
		ctrl_alt_del();
		return;
	}

	power_button_poll_timer.expires = jiffies + (HZ / 10);
	add_timer(&power_button_poll_timer);
}


static void __init n2100_init_machine(void)
{
	platform_device_register(&iop3xx_i2c0_device);
	platform_device_register(&n2100_flash_device);
	platform_device_register(&n2100_serial_device);
	platform_device_register(&iop3xx_dma_0_channel);
	platform_device_register(&iop3xx_dma_1_channel);

	i2c_register_board_info(0, n2100_i2c_devices,
		ARRAY_SIZE(n2100_i2c_devices));

	pm_power_off = n2100_power_off;

	init_timer(&power_button_poll_timer);
	power_button_poll_timer.function = power_button_poll;
	power_button_poll_timer.expires = jiffies + (HZ / 10);
	add_timer(&power_button_poll_timer);
}

MACHINE_START(N2100, "Thecus N2100")
	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
	.phys_io	= N2100_UART,
	.io_pg_offst	= ((N2100_UART) >> 18) & 0xfffc,
	.boot_params	= 0xa0000100,
	.map_io		= n2100_map_io,
	.init_irq	= iop32x_init_irq,
	.timer		= &n2100_timer,
	.init_machine	= n2100_init_machine,
MACHINE_END
Commit	Line	Data
e60d07b6 LB	1	/*
	2	* arch/arm/mach-iop32x/n2100.c
	3	*
	4	* Board support code for the Thecus N2100 platform.
	5	*
	6	* Author: Rory Bolt <rorybolt@pacbell.net>
	7	* Copyright (C) 2002 Rory Bolt
	8	* Copyright 2003 (c) MontaVista, Software, Inc.
	9	* Copyright (C) 2004 Intel Corp.
	10	*
	11	* This program is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the
	13	* Free Software Foundation; either version 2 of the License, or (at your
	14	* option) any later version.
	15	*/
	16
	17	#include <linux/mm.h>
	18	#include <linux/init.h>
9aa69338	19	#include <linux/f75375s.h>
e60d07b6 LB	20	#include <linux/delay.h>
	21	#include <linux/kernel.h>
	22	#include <linux/pci.h>
	23	#include <linux/pm.h>
	24	#include <linux/string.h>
	25	#include <linux/slab.h>
	26	#include <linux/serial_core.h>
	27	#include <linux/serial_8250.h>
	28	#include <linux/mtd/physmap.h>
c00593f6	29	#include <linux/i2c.h>
e60d07b6 LB	30	#include <linux/platform_device.h>
	31	#include <linux/reboot.h>
	32	#include <asm/hardware.h>
	33	#include <asm/io.h>
	34	#include <asm/irq.h>
	35	#include <asm/mach/arch.h>
	36	#include <asm/mach/map.h>
	37	#include <asm/mach/pci.h>
	38	#include <asm/mach/time.h>
	39	#include <asm/mach-types.h>
	40	#include <asm/page.h>
	41	#include <asm/pgtable.h>
3668b45d	42	#include <asm/arch/time.h>
e60d07b6 LB	43
	44	/*
	45	* N2100 timer tick configuration.
	46	*/
	47	static void __init n2100_timer_init(void)
	48	{
	49	/* 33.000 MHz crystal. */
3668b45d	50	iop_init_time(198000000);
e60d07b6 LB	51	}
	52
	53	static struct sys_timer n2100_timer = {
	54	.init = n2100_timer_init,
3668b45d	55	.offset = iop_gettimeoffset,
e60d07b6 LB	56	};
	57
	58
	59	/*
	60	* N2100 I/O.
	61	*/
	62	static struct map_desc n2100_io_desc[] __initdata = {
	63	{ /* on-board devices */
	64	.virtual = N2100_UART,
	65	.pfn = __phys_to_pfn(N2100_UART),
	66	.length = 0x00100000,
	67	.type = MT_DEVICE
	68	},
	69	};
	70
	71	void __init n2100_map_io(void)
	72	{
	73	iop3xx_map_io();
	74	iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
	75	}
	76
	77
	78	/*
	79	* N2100 PCI.
	80	*/
d73d8011	81	static int __init
e60d07b6 LB	82	n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	83	{
	84	int irq;
	85
	86	if (PCI_SLOT(dev->devfn) == 1) {
	87	/* RTL8110SB #1 */
	88	irq = IRQ_IOP32X_XINT0;
	89	} else if (PCI_SLOT(dev->devfn) == 2) {
	90	/* RTL8110SB #2 */
811c9a4b	91	irq = IRQ_IOP32X_XINT3;
e60d07b6 LB	92	} else if (PCI_SLOT(dev->devfn) == 3) {
	93	/* Sil3512 */
	94	irq = IRQ_IOP32X_XINT2;
	95	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
	96	/* VT6212 INTA */
	97	irq = IRQ_IOP32X_XINT1;
	98	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
	99	/* VT6212 INTB */
	100	irq = IRQ_IOP32X_XINT0;
	101	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
	102	/* VT6212 INTC */
	103	irq = IRQ_IOP32X_XINT2;
	104	} else if (PCI_SLOT(dev->devfn) == 5) {
	105	/* Mini-PCI slot */
	106	irq = IRQ_IOP32X_XINT3;
	107	} else {
	108	printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
	109	"device PCI:%d:%d:%d\n", dev->bus->number,
	110	PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
	111	irq = -1;
	112	}
	113
	114	return irq;
	115	}
	116
	117	static struct hw_pci n2100_pci __initdata = {
	118	.swizzle = pci_std_swizzle,
	119	.nr_controllers = 1,
	120	.setup = iop3xx_pci_setup,
	121	.preinit = iop3xx_pci_preinit,
	122	.scan = iop3xx_pci_scan_bus,
	123	.map_irq = n2100_pci_map_irq,
	124	};
	125
66822b2e LB	126	/*
	127	* Both r8169 chips on the n2100 exhibit PCI parity problems. Set
	128	* the ->broken_parity_status flag for both ports so that the r8169
	129	* driver knows it should ignore error interrupts.
	130	*/
	131	static void n2100_fixup_r8169(struct pci_dev *dev)
	132	{
	133	if (dev->bus->number == 0 &&
	134	(dev->devfn == PCI_DEVFN(1, 0) \|\|
	135	dev->devfn == PCI_DEVFN(2, 0)))
	136	dev->broken_parity_status = 1;
	137	}
	138	DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
	139
e60d07b6 LB	140	static int __init n2100_pci_init(void)
	141	{
	142	if (machine_is_n2100())
	143	pci_common_init(&n2100_pci);
	144
	145	return 0;
	146	}
	147
	148	subsys_initcall(n2100_pci_init);
	149
	150
	151	/*
	152	* N2100 machine initialisation.
	153	*/
	154	static struct physmap_flash_data n2100_flash_data = {
	155	.width = 2,
	156	};
	157
	158	static struct resource n2100_flash_resource = {
	159	.start = 0xf0000000,
	160	.end = 0xf0ffffff,
	161	.flags = IORESOURCE_MEM,
	162	};
	163
	164	static struct platform_device n2100_flash_device = {
	165	.name = "physmap-flash",
	166	.id = 0,
	167	.dev = {
	168	.platform_data = &n2100_flash_data,
	169	},
	170	.num_resources = 1,
	171	.resource = &n2100_flash_resource,
	172	};
	173
	174
	175	static struct plat_serial8250_port n2100_serial_port[] = {
	176	{
	177	.mapbase = N2100_UART,
	178	.membase = (char *)N2100_UART,
	179	.irq = 0,
	180	.flags = UPF_SKIP_TEST,
	181	.iotype = UPIO_MEM,
	182	.regshift = 0,
	183	.uartclk = 1843200,
	184	},
	185	{ },
	186	};
	187
	188	static struct resource n2100_uart_resource = {
	189	.start = N2100_UART,
	190	.end = N2100_UART + 7,
	191	.flags = IORESOURCE_MEM,
	192	};
	193
	194	static struct platform_device n2100_serial_device = {
	195	.name = "serial8250",
	196	.id = PLAT8250_DEV_PLATFORM,
	197	.dev = {
	198	.platform_data = n2100_serial_port,
	199	},
	200	.num_resources = 1,
	201	.resource = &n2100_uart_resource,
	202	};
	203
9aa69338 RV	204	static struct f75375s_platform_data n2100_f75375s = {
	205	.pwm = { 255, 255 },
	206	.pwm_enable = { 0, 0 },
	207	};
	208
c00593f6 MM	209	static struct i2c_board_info __initdata n2100_i2c_devices[] = {
c00593f6 MM	210	{
3760f736	211	I2C_BOARD_INFO("rs5c372b", 0x32),
c00593f6	212	},
9aa69338 RV	213	{
9aa69338 RV	214	I2C_BOARD_INFO("f75375", 0x2e),
9aa69338 RV	215	.platform_data = &n2100_f75375s,
9aa69338 RV	216	},
c00593f6	217	};
e60d07b6 LB	218
	219	/*
	220	* Pull PCA9532 GPIO #8 low to power off the machine.
	221	*/
	222	static void n2100_power_off(void)
	223	{
	224	local_irq_disable();
	225
	226	/* Start condition, I2C address of PCA9532, write transaction. */
	227	*IOP3XX_IDBR0 = 0xc0;
	228	*IOP3XX_ICR0 = 0xe9;
	229	mdelay(1);
	230
	231	/* Write address 0x08. */
	232	*IOP3XX_IDBR0 = 0x08;
	233	*IOP3XX_ICR0 = 0xe8;
	234	mdelay(1);
	235
	236	/* Write data 0x01, stop condition. */
	237	*IOP3XX_IDBR0 = 0x01;
	238	*IOP3XX_ICR0 = 0xea;
	239
	240	while (1)
	241	;
	242	}
	243
	244
	245	static struct timer_list power_button_poll_timer;
	246
	247	static void power_button_poll(unsigned long dummy)
	248	{
	249	if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
	250	ctrl_alt_del();
	251	return;
	252	}
	253
	254	power_button_poll_timer.expires = jiffies + (HZ / 10);
	255	add_timer(&power_button_poll_timer);
	256	}
	257
	258
	259	static void __init n2100_init_machine(void)
	260	{
	261	platform_device_register(&iop3xx_i2c0_device);
	262	platform_device_register(&n2100_flash_device);
	263	platform_device_register(&n2100_serial_device);
2492c845 DW	264	platform_device_register(&iop3xx_dma_0_channel);
2492c845 DW	265	platform_device_register(&iop3xx_dma_1_channel);
e60d07b6	266
c00593f6 MM	267	i2c_register_board_info(0, n2100_i2c_devices,
	268	ARRAY_SIZE(n2100_i2c_devices));
	269
e60d07b6 LB	270	pm_power_off = n2100_power_off;
	271
	272	init_timer(&power_button_poll_timer);
	273	power_button_poll_timer.function = power_button_poll;
	274	power_button_poll_timer.expires = jiffies + (HZ / 10);
	275	add_timer(&power_button_poll_timer);
	276	}
	277
	278	MACHINE_START(N2100, "Thecus N2100")
	279	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
	280	.phys_io = N2100_UART,
	281	.io_pg_offst = ((N2100_UART) >> 18) & 0xfffc,
	282	.boot_params = 0xa0000100,
	283	.map_io = n2100_map_io,
	284	.init_irq = iop32x_init_irq,
	285	.timer = &n2100_timer,
	286	.init_machine = n2100_init_machine,
	287	MACHINE_END