arch/arm/mach-iop32x/n2100.c - kernel/bruno - Git at Google

 /*
  * 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 <linux/gpio.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>
 #include "gpio-iop32x.h"

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


 /*
  * 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(enum reboot_mode mode, const char *cmd)
 {
 	int ret;

 	ret = gpio_direction_output(N2100_HARDWARE_RESET, 0);
 	if (ret) {
 		pr_crit("could not drive reset GPIO low\n");
 		return;
 	}
 	/* Wait for reset to happen */
 	while (1)
 		;
 }


 static struct timer_list power_button_poll_timer;

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

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

 static int __init n2100_request_gpios(void)
 {
 	int ret;

 	if (!machine_is_n2100())
 		return 0;

 	ret = gpio_request(N2100_HARDWARE_RESET, "reset");
 	if (ret)
 		pr_err("could not request reset GPIO\n");

 	ret = gpio_request(N2100_POWER_BUTTON, "power");
 	if (ret)
 		pr_err("could not request power GPIO\n");
 	else {
 		ret = gpio_direction_input(N2100_POWER_BUTTON);
 		if (ret)
 			pr_err("could not set power GPIO as input\n");
 	}
 	/* Set up power button poll timer */
 	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);
 	return 0;
 }
 device_initcall(n2100_request_gpios);

 static void __init n2100_init_machine(void)
 {
 	register_iop32x_gpio();
 	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;
 }

 MACHINE_START(N2100, "Thecus N2100")
 	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 	.atag_offset	= 0x100,
 	.map_io		= n2100_map_io,
 	.init_irq	= iop32x_init_irq,
 	.init_time	= n2100_timer_init,
 	.init_machine	= n2100_init_machine,
 	.restart	= n2100_restart,
 MACHINE_END
	/*
	* 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 <linux/gpio.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>
	#include "gpio-iop32x.h"

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


	/*
	* 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(enum reboot_mode mode, const char *cmd)
	{
	int ret;

	ret = gpio_direction_output(N2100_HARDWARE_RESET, 0);
	if (ret) {
	pr_crit("could not drive reset GPIO low\n");
	return;
	}
	/* Wait for reset to happen */
	while (1)
	;
	}


	static struct timer_list power_button_poll_timer;

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

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

	static int __init n2100_request_gpios(void)
	{
	int ret;

	if (!machine_is_n2100())
	return 0;

	ret = gpio_request(N2100_HARDWARE_RESET, "reset");
	if (ret)
	pr_err("could not request reset GPIO\n");

	ret = gpio_request(N2100_POWER_BUTTON, "power");
	if (ret)
	pr_err("could not request power GPIO\n");
	else {
	ret = gpio_direction_input(N2100_POWER_BUTTON);
	if (ret)
	pr_err("could not set power GPIO as input\n");
	}
	/* Set up power button poll timer */
	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);
	return 0;
	}
	device_initcall(n2100_request_gpios);

	static void __init n2100_init_machine(void)
	{
	register_iop32x_gpio();
	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;
	}

	MACHINE_START(N2100, "Thecus N2100")
	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
	.atag_offset = 0x100,
	.map_io = n2100_map_io,
	.init_irq = iop32x_init_irq,
	.init_time = n2100_timer_init,
	.init_machine = n2100_init_machine,
	.restart = n2100_restart,
	MACHINE_END