[mirror_ubuntu-focal-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/f75375s.h>
#include <linux/leds-pca9532.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/string.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 <linux/io.h>
#include <mach/hardware.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 <mach/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,
};


/*
 * 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(const 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 = {
	.nr_controllers = 1,
	.ops		= &iop3xx_ops,
	.setup		= iop3xx_pci_setup,
	.preinit	= iop3xx_pci_preinit,
	.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 | UPF_AUTO_IRQ | UPF_SHARE_IRQ,
		.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 pca9532_platform_data n2100_leds = {
	.leds = {
	{	.name = "n2100:red:satafail0",
		.state = PCA9532_OFF,
		.type = PCA9532_TYPE_LED,
	},
	{	.name = "n2100:red:satafail1",
		.state = PCA9532_OFF,
		.type = PCA9532_TYPE_LED,
	},
	{	.name = "n2100:blue:usb",
		.state = PCA9532_OFF,
		.type = PCA9532_TYPE_LED,
	},
	{ 	.type = PCA9532_TYPE_NONE },

	{ 	.type = PCA9532_TYPE_NONE },
	{ 	.type = PCA9532_TYPE_NONE },
	{ 	.type = PCA9532_TYPE_NONE },
	{	.name = "n2100:red:usb",
		.state = PCA9532_OFF,
		.type = PCA9532_TYPE_LED,
	},

	{	.type = PCA9532_TYPE_NONE }, /* power OFF gpio */
	{	.type = PCA9532_TYPE_NONE }, /* reset gpio */
	{	.type = PCA9532_TYPE_NONE },
	{	.type = PCA9532_TYPE_NONE },

	{	.type = PCA9532_TYPE_NONE },
	{	.name = "n2100:orange:system",
		.state = PCA9532_OFF,
		.type = PCA9532_TYPE_LED,
	},
	{	.name = "n2100:red:system",
		.state = PCA9532_OFF,
		.type = PCA9532_TYPE_LED,
	},
	{	.name = "N2100 beeper"  ,
		.state =  PCA9532_OFF,
		.type = PCA9532_TYPE_N2100_BEEP,
	},
	},
	.psc = { 0, 0 },
	.pwm = { 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,
	},
	{
		I2C_BOARD_INFO("pca9532", 0x60),
		.platform_data = &n2100_leds,
	},
};

/*
 * 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 void n2100_restart(char mode, const char *cmd)
{
	gpio_line_set(N2100_HARDWARE_RESET, GPIO_LOW);
	gpio_line_config(N2100_HARDWARE_RESET, GPIO_OUT);
	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> */
	.atag_offset	= 0x100,
	.map_io		= n2100_map_io,
	.init_irq	= iop32x_init_irq,
	.timer		= &n2100_timer,
	.init_machine	= n2100_init_machine,
	.restart	= n2100_restart,
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>
30be0486	20	#include <linux/leds-pca9532.h>
e60d07b6 LB	21	#include <linux/delay.h>
	22	#include <linux/kernel.h>
	23	#include <linux/pci.h>
	24	#include <linux/pm.h>
	25	#include <linux/string.h>
e60d07b6 LB	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>
e60d07b6 LB	31	#include <linux/reboot.h>
fced80c7	32	#include <linux/io.h>
a09e64fb	33	#include <mach/hardware.h>
e60d07b6 LB	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>
a09e64fb	42	#include <mach/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,
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
d5341942	81	n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
e60d07b6 LB	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 = {
e60d07b6	117	.nr_controllers = 1,
c23bfc38	118	.ops = &iop3xx_ops,
e60d07b6 LB	119	.setup = iop3xx_pci_setup,
e60d07b6 LB	120	.preinit = iop3xx_pci_preinit,
e60d07b6 LB	121	.map_irq = n2100_pci_map_irq,
	122	};
	123
66822b2e LB	124	/*
	125	* Both r8169 chips on the n2100 exhibit PCI parity problems. Set
	126	* the ->broken_parity_status flag for both ports so that the r8169
	127	* driver knows it should ignore error interrupts.
	128	*/
	129	static void n2100_fixup_r8169(struct pci_dev *dev)
	130	{
	131	if (dev->bus->number == 0 &&
	132	(dev->devfn == PCI_DEVFN(1, 0) \|\|
	133	dev->devfn == PCI_DEVFN(2, 0)))
	134	dev->broken_parity_status = 1;
	135	}
	136	DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
	137
e60d07b6 LB	138	static int __init n2100_pci_init(void)
	139	{
	140	if (machine_is_n2100())
	141	pci_common_init(&n2100_pci);
	142
	143	return 0;
	144	}
	145
	146	subsys_initcall(n2100_pci_init);
	147
	148
	149	/*
	150	* N2100 machine initialisation.
	151	*/
	152	static struct physmap_flash_data n2100_flash_data = {
	153	.width = 2,
	154	};
	155
	156	static struct resource n2100_flash_resource = {
	157	.start = 0xf0000000,
	158	.end = 0xf0ffffff,
	159	.flags = IORESOURCE_MEM,
	160	};
	161
	162	static struct platform_device n2100_flash_device = {
	163	.name = "physmap-flash",
	164	.id = 0,
	165	.dev = {
	166	.platform_data = &n2100_flash_data,
	167	},
	168	.num_resources = 1,
	169	.resource = &n2100_flash_resource,
	170	};
	171
	172
	173	static struct plat_serial8250_port n2100_serial_port[] = {
	174	{
	175	.mapbase = N2100_UART,
	176	.membase = (char *)N2100_UART,
	177	.irq = 0,
cc761bed	178	.flags = UPF_SKIP_TEST \| UPF_AUTO_IRQ \| UPF_SHARE_IRQ,
e60d07b6 LB	179	.iotype = UPIO_MEM,
	180	.regshift = 0,
	181	.uartclk = 1843200,
	182	},
	183	{ },
	184	};
	185
	186	static struct resource n2100_uart_resource = {
	187	.start = N2100_UART,
	188	.end = N2100_UART + 7,
	189	.flags = IORESOURCE_MEM,
	190	};
	191
	192	static struct platform_device n2100_serial_device = {
	193	.name = "serial8250",
	194	.id = PLAT8250_DEV_PLATFORM,
	195	.dev = {
	196	.platform_data = n2100_serial_port,
	197	},
	198	.num_resources = 1,
	199	.resource = &n2100_uart_resource,
	200	};
	201
9aa69338 RV	202	static struct f75375s_platform_data n2100_f75375s = {
	203	.pwm = { 255, 255 },
	204	.pwm_enable = { 0, 0 },
	205	};
	206
30be0486 RV	207	static struct pca9532_platform_data n2100_leds = {
	208	.leds = {
	209	{ .name = "n2100:red:satafail0",
	210	.state = PCA9532_OFF,
	211	.type = PCA9532_TYPE_LED,
	212	},
	213	{ .name = "n2100:red:satafail1",
	214	.state = PCA9532_OFF,
	215	.type = PCA9532_TYPE_LED,
	216	},
	217	{ .name = "n2100:blue:usb",
	218	.state = PCA9532_OFF,
	219	.type = PCA9532_TYPE_LED,
	220	},
	221	{ .type = PCA9532_TYPE_NONE },
	222
	223	{ .type = PCA9532_TYPE_NONE },
	224	{ .type = PCA9532_TYPE_NONE },
	225	{ .type = PCA9532_TYPE_NONE },
	226	{ .name = "n2100:red:usb",
	227	.state = PCA9532_OFF,
	228	.type = PCA9532_TYPE_LED,
	229	},
	230
	231	{ .type = PCA9532_TYPE_NONE }, /* power OFF gpio */
	232	{ .type = PCA9532_TYPE_NONE }, /* reset gpio */
	233	{ .type = PCA9532_TYPE_NONE },
	234	{ .type = PCA9532_TYPE_NONE },
	235
	236	{ .type = PCA9532_TYPE_NONE },
	237	{ .name = "n2100:orange:system",
	238	.state = PCA9532_OFF,
	239	.type = PCA9532_TYPE_LED,
	240	},
	241	{ .name = "n2100:red:system",
	242	.state = PCA9532_OFF,
	243	.type = PCA9532_TYPE_LED,
	244	},
	245	{ .name = "N2100 beeper" ,
	246	.state = PCA9532_OFF,
	247	.type = PCA9532_TYPE_N2100_BEEP,
	248	},
	249	},
	250	.psc = { 0, 0 },
	251	.pwm = { 0, 0 },
	252	};
	253
c00593f6 MM	254	static struct i2c_board_info __initdata n2100_i2c_devices[] = {
c00593f6 MM	255	{
3760f736	256	I2C_BOARD_INFO("rs5c372b", 0x32),
c00593f6	257	},
9aa69338 RV	258	{
9aa69338 RV	259	I2C_BOARD_INFO("f75375", 0x2e),
9aa69338 RV	260	.platform_data = &n2100_f75375s,
9aa69338 RV	261	},
30be0486 RV	262	{
	263	I2C_BOARD_INFO("pca9532", 0x60),
	264	.platform_data = &n2100_leds,
	265	},
c00593f6	266	};
e60d07b6 LB	267
	268	/*
	269	* Pull PCA9532 GPIO #8 low to power off the machine.
	270	*/
	271	static void n2100_power_off(void)
	272	{
	273	local_irq_disable();
	274
	275	/* Start condition, I2C address of PCA9532, write transaction. */
	276	*IOP3XX_IDBR0 = 0xc0;
	277	*IOP3XX_ICR0 = 0xe9;
	278	mdelay(1);
	279
	280	/* Write address 0x08. */
	281	*IOP3XX_IDBR0 = 0x08;
	282	*IOP3XX_ICR0 = 0xe8;
	283	mdelay(1);
	284
	285	/* Write data 0x01, stop condition. */
	286	*IOP3XX_IDBR0 = 0x01;
	287	*IOP3XX_ICR0 = 0xea;
	288
	289	while (1)
	290	;
	291	}
	292
bec92b1e RK	293	static void n2100_restart(char mode, const char *cmd)
	294	{
	295	gpio_line_set(N2100_HARDWARE_RESET, GPIO_LOW);
	296	gpio_line_config(N2100_HARDWARE_RESET, GPIO_OUT);
	297	while (1)
	298	;
	299	}
	300
e60d07b6 LB	301
	302	static struct timer_list power_button_poll_timer;
	303
	304	static void power_button_poll(unsigned long dummy)
	305	{
	306	if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
	307	ctrl_alt_del();
	308	return;
	309	}
	310
	311	power_button_poll_timer.expires = jiffies + (HZ / 10);
	312	add_timer(&power_button_poll_timer);
	313	}
	314
	315
	316	static void __init n2100_init_machine(void)
	317	{
	318	platform_device_register(&iop3xx_i2c0_device);
	319	platform_device_register(&n2100_flash_device);
	320	platform_device_register(&n2100_serial_device);
2492c845 DW	321	platform_device_register(&iop3xx_dma_0_channel);
2492c845 DW	322	platform_device_register(&iop3xx_dma_1_channel);
e60d07b6	323
c00593f6 MM	324	i2c_register_board_info(0, n2100_i2c_devices,
	325	ARRAY_SIZE(n2100_i2c_devices));
	326
e60d07b6 LB	327	pm_power_off = n2100_power_off;
	328
	329	init_timer(&power_button_poll_timer);
	330	power_button_poll_timer.function = power_button_poll;
	331	power_button_poll_timer.expires = jiffies + (HZ / 10);
	332	add_timer(&power_button_poll_timer);
	333	}
	334
	335	MACHINE_START(N2100, "Thecus N2100")
	336	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
1896746d	337	.atag_offset = 0x100,
e60d07b6 LB	338	.map_io = n2100_map_io,
	339	.init_irq = iop32x_init_irq,
	340	.timer = &n2100_timer,
	341	.init_machine = n2100_init_machine,
bec92b1e	342	.restart = n2100_restart,
e60d07b6	343	MACHINE_END