[mirror_ubuntu-bionic-kernel.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/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 i2c_board_info __initdata n2100_i2c_devices[] = {
	{
		I2C_BOARD_INFO("rtc-rs5c372", 0x32),
		.type = "rs5c372b",
	},
};

/*
 * 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>
	19	#include <linux/delay.h>
	20	#include <linux/kernel.h>
	21	#include <linux/pci.h>
	22	#include <linux/pm.h>
	23	#include <linux/string.h>
	24	#include <linux/slab.h>
	25	#include <linux/serial_core.h>
	26	#include <linux/serial_8250.h>
	27	#include <linux/mtd/physmap.h>
c00593f6	28	#include <linux/i2c.h>
e60d07b6 LB	29	#include <linux/platform_device.h>
	30	#include <linux/reboot.h>
	31	#include <asm/hardware.h>
	32	#include <asm/io.h>
	33	#include <asm/irq.h>
	34	#include <asm/mach/arch.h>
	35	#include <asm/mach/map.h>
	36	#include <asm/mach/pci.h>
	37	#include <asm/mach/time.h>
	38	#include <asm/mach-types.h>
	39	#include <asm/page.h>
	40	#include <asm/pgtable.h>
3668b45d	41	#include <asm/arch/time.h>
e60d07b6 LB	42
	43	/*
	44	* N2100 timer tick configuration.
	45	*/
	46	static void __init n2100_timer_init(void)
	47	{
	48	/* 33.000 MHz crystal. */
3668b45d	49	iop_init_time(198000000);
e60d07b6 LB	50	}
	51
	52	static struct sys_timer n2100_timer = {
	53	.init = n2100_timer_init,
3668b45d	54	.offset = iop_gettimeoffset,
e60d07b6 LB	55	};
	56
	57
	58	/*
	59	* N2100 I/O.
	60	*/
	61	static struct map_desc n2100_io_desc[] __initdata = {
	62	{ /* on-board devices */
	63	.virtual = N2100_UART,
	64	.pfn = __phys_to_pfn(N2100_UART),
	65	.length = 0x00100000,
	66	.type = MT_DEVICE
	67	},
	68	};
	69
	70	void __init n2100_map_io(void)
	71	{
	72	iop3xx_map_io();
	73	iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
	74	}
	75
	76
	77	/*
	78	* N2100 PCI.
	79	*/
d73d8011	80	static int __init
e60d07b6 LB	81	n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	82	{
	83	int irq;
	84
	85	if (PCI_SLOT(dev->devfn) == 1) {
	86	/* RTL8110SB #1 */
	87	irq = IRQ_IOP32X_XINT0;
	88	} else if (PCI_SLOT(dev->devfn) == 2) {
	89	/* RTL8110SB #2 */
811c9a4b	90	irq = IRQ_IOP32X_XINT3;
e60d07b6 LB	91	} else if (PCI_SLOT(dev->devfn) == 3) {
	92	/* Sil3512 */
	93	irq = IRQ_IOP32X_XINT2;
	94	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
	95	/* VT6212 INTA */
	96	irq = IRQ_IOP32X_XINT1;
	97	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
	98	/* VT6212 INTB */
	99	irq = IRQ_IOP32X_XINT0;
	100	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
	101	/* VT6212 INTC */
	102	irq = IRQ_IOP32X_XINT2;
	103	} else if (PCI_SLOT(dev->devfn) == 5) {
	104	/* Mini-PCI slot */
	105	irq = IRQ_IOP32X_XINT3;
	106	} else {
	107	printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
	108	"device PCI:%d:%d:%d\n", dev->bus->number,
	109	PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
	110	irq = -1;
	111	}
	112
	113	return irq;
	114	}
	115
	116	static struct hw_pci n2100_pci __initdata = {
	117	.swizzle = pci_std_swizzle,
	118	.nr_controllers = 1,
	119	.setup = iop3xx_pci_setup,
	120	.preinit = iop3xx_pci_preinit,
	121	.scan = iop3xx_pci_scan_bus,
	122	.map_irq = n2100_pci_map_irq,
	123	};
	124
66822b2e LB	125	/*
	126	* Both r8169 chips on the n2100 exhibit PCI parity problems. Set
	127	* the ->broken_parity_status flag for both ports so that the r8169
	128	* driver knows it should ignore error interrupts.
	129	*/
	130	static void n2100_fixup_r8169(struct pci_dev *dev)
	131	{
	132	if (dev->bus->number == 0 &&
	133	(dev->devfn == PCI_DEVFN(1, 0) \|\|
	134	dev->devfn == PCI_DEVFN(2, 0)))
	135	dev->broken_parity_status = 1;
	136	}
	137	DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
	138
e60d07b6 LB	139	static int __init n2100_pci_init(void)
	140	{
	141	if (machine_is_n2100())
	142	pci_common_init(&n2100_pci);
	143
	144	return 0;
	145	}
	146
	147	subsys_initcall(n2100_pci_init);
	148
	149
	150	/*
	151	* N2100 machine initialisation.
	152	*/
	153	static struct physmap_flash_data n2100_flash_data = {
	154	.width = 2,
	155	};
	156
	157	static struct resource n2100_flash_resource = {
	158	.start = 0xf0000000,
	159	.end = 0xf0ffffff,
	160	.flags = IORESOURCE_MEM,
	161	};
	162
	163	static struct platform_device n2100_flash_device = {
	164	.name = "physmap-flash",
	165	.id = 0,
	166	.dev = {
	167	.platform_data = &n2100_flash_data,
	168	},
	169	.num_resources = 1,
	170	.resource = &n2100_flash_resource,
	171	};
	172
	173
	174	static struct plat_serial8250_port n2100_serial_port[] = {
	175	{
	176	.mapbase = N2100_UART,
	177	.membase = (char *)N2100_UART,
	178	.irq = 0,
	179	.flags = UPF_SKIP_TEST,
	180	.iotype = UPIO_MEM,
	181	.regshift = 0,
	182	.uartclk = 1843200,
	183	},
	184	{ },
	185	};
	186
	187	static struct resource n2100_uart_resource = {
	188	.start = N2100_UART,
	189	.end = N2100_UART + 7,
	190	.flags = IORESOURCE_MEM,
	191	};
	192
	193	static struct platform_device n2100_serial_device = {
	194	.name = "serial8250",
	195	.id = PLAT8250_DEV_PLATFORM,
	196	.dev = {
	197	.platform_data = n2100_serial_port,
	198	},
	199	.num_resources = 1,
	200	.resource = &n2100_uart_resource,
	201	};
	202
c00593f6 MM	203	static struct i2c_board_info __initdata n2100_i2c_devices[] = {
	204	{
	205	I2C_BOARD_INFO("rtc-rs5c372", 0x32),
	206	.type = "rs5c372b",
	207	},
	208	};
e60d07b6 LB	209
	210	/*
	211	* Pull PCA9532 GPIO #8 low to power off the machine.
	212	*/
	213	static void n2100_power_off(void)
	214	{
	215	local_irq_disable();
	216
	217	/* Start condition, I2C address of PCA9532, write transaction. */
	218	*IOP3XX_IDBR0 = 0xc0;
	219	*IOP3XX_ICR0 = 0xe9;
	220	mdelay(1);
	221
	222	/* Write address 0x08. */
	223	*IOP3XX_IDBR0 = 0x08;
	224	*IOP3XX_ICR0 = 0xe8;
	225	mdelay(1);
	226
	227	/* Write data 0x01, stop condition. */
	228	*IOP3XX_IDBR0 = 0x01;
	229	*IOP3XX_ICR0 = 0xea;
	230
	231	while (1)
	232	;
	233	}
	234
	235
	236	static struct timer_list power_button_poll_timer;
	237
	238	static void power_button_poll(unsigned long dummy)
	239	{
	240	if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
	241	ctrl_alt_del();
	242	return;
	243	}
	244
	245	power_button_poll_timer.expires = jiffies + (HZ / 10);
	246	add_timer(&power_button_poll_timer);
	247	}
	248
	249
	250	static void __init n2100_init_machine(void)
	251	{
	252	platform_device_register(&iop3xx_i2c0_device);
	253	platform_device_register(&n2100_flash_device);
	254	platform_device_register(&n2100_serial_device);
2492c845 DW	255	platform_device_register(&iop3xx_dma_0_channel);
2492c845 DW	256	platform_device_register(&iop3xx_dma_1_channel);
e60d07b6	257
c00593f6 MM	258	i2c_register_board_info(0, n2100_i2c_devices,
	259	ARRAY_SIZE(n2100_i2c_devices));
	260
e60d07b6 LB	261	pm_power_off = n2100_power_off;
	262
	263	init_timer(&power_button_poll_timer);
	264	power_button_poll_timer.function = power_button_poll;
	265	power_button_poll_timer.expires = jiffies + (HZ / 10);
	266	add_timer(&power_button_poll_timer);
	267	}
	268
	269	MACHINE_START(N2100, "Thecus N2100")
	270	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
	271	.phys_io = N2100_UART,
	272	.io_pg_offst = ((N2100_UART) >> 18) & 0xfffc,
	273	.boot_params = 0xa0000100,
	274	.map_io = n2100_map_io,
	275	.init_irq = iop32x_init_irq,
	276	.timer = &n2100_timer,
	277	.init_machine = n2100_init_machine,
	278	MACHINE_END