[deliverable/linux.git] / arch / arm / mach-iop32x / em7210.c

/*
 * arch/arm/mach-iop32x/em7210.c
 *
 * Board support code for the Lanner EM7210 platforms.
 *
 * Based on arch/arm/mach-iop32x/iq31244.c file.
 *
 * Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <mach/hardware.h>
#include <linux/io.h>
#include <linux/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 <mach/time.h>
#include "gpio-iop32x.h"

static void __init em7210_timer_init(void)
{
	/* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */
	/* 33.333 MHz crystal.                                */
	iop_init_time(200000000);
}

/*
 * EM7210 RTC
 */
static struct i2c_board_info __initdata em7210_i2c_devices[] = {
	{
		I2C_BOARD_INFO("rs5c372a", 0x32),
	},
};

/*
 * EM7210 I/O
 */
static struct map_desc em7210_io_desc[] __initdata = {
	{	/* on-board devices */
		.virtual	= IQ31244_UART,
		.pfn		= __phys_to_pfn(IQ31244_UART),
		.length		= 0x00100000,
		.type		= MT_DEVICE,
	},
};

void __init em7210_map_io(void)
{
	iop3xx_map_io();
	iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));
}


/*
 * EM7210 PCI
 */
#define INTA	IRQ_IOP32X_XINT0
#define INTB	IRQ_IOP32X_XINT1
#define INTC	IRQ_IOP32X_XINT2
#define INTD	IRQ_IOP32X_XINT3

static int __init
em7210_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
	static int pci_irq_table[][4] = {
		/*
		 * PCI IDSEL/INTPIN->INTLINE
		 * A       B       C       D
		 */
		{INTB, INTB, INTB, INTB}, /* console / uart */
		{INTA, INTA, INTA, INTA}, /* 1st 82541      */
		{INTD, INTD, INTD, INTD}, /* 2nd 82541      */
		{INTC, INTC, INTC, INTC}, /* GD31244        */
		{INTD, INTA, INTA, INTA}, /* mini-PCI       */
		{INTD, INTC, INTA, INTA}, /* NEC USB        */
	};

	if (pin < 1 || pin > 4)
		return -1;

	return pci_irq_table[slot % 6][pin - 1];
}

static struct hw_pci em7210_pci __initdata = {
	.nr_controllers = 1,
	.ops		= &iop3xx_ops,
	.setup		= iop3xx_pci_setup,
	.preinit	= iop3xx_pci_preinit,
	.map_irq	= em7210_pci_map_irq,
};

static int __init em7210_pci_init(void)
{
	if (machine_is_em7210())
		pci_common_init(&em7210_pci);

	return 0;
}

subsys_initcall(em7210_pci_init);


/*
 * EM7210 Flash
 */
static struct physmap_flash_data em7210_flash_data = {
	.width		= 2,
};

static struct resource em7210_flash_resource = {
	.start		= 0xf0000000,
	.end		= 0xf1ffffff,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device em7210_flash_device = {
	.name		= "physmap-flash",
	.id		= 0,
	.dev		= {
		.platform_data	= &em7210_flash_data,
	},
	.num_resources	= 1,
	.resource	= &em7210_flash_resource,
};


/*
 * EM7210 UART
 * The physical address of the serial port is 0xfe800000,
 * so it can be used for physical and virtual address.
 */
static struct plat_serial8250_port em7210_serial_port[] = {
	{
		.mapbase	= IQ31244_UART,
		.membase	= (char *)IQ31244_UART,
		.irq		= IRQ_IOP32X_XINT1,
		.flags		= UPF_SKIP_TEST,
		.iotype		= UPIO_MEM,
		.regshift	= 0,
		.uartclk	= 1843200,
	},
	{ },
};

static struct resource em7210_uart_resource = {
	.start		= IQ31244_UART,
	.end		= IQ31244_UART + 7,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device em7210_serial_device = {
	.name		= "serial8250",
	.id		= PLAT8250_DEV_PLATFORM,
	.dev		= {
		.platform_data		= em7210_serial_port,
	},
	.num_resources	= 1,
	.resource	= &em7210_uart_resource,
};

#define EM7210_HARDWARE_POWER 0

void em7210_power_off(void)
{
	int ret;

	ret = gpio_direction_output(EM7210_HARDWARE_POWER, 1);
	if (ret)
		pr_crit("could not drive power off GPIO high\n");
}

static int __init em7210_request_gpios(void)
{
	int ret;

	if (!machine_is_em7210())
		return 0;

	ret = gpio_request(EM7210_HARDWARE_POWER, "power");
	if (ret) {
		pr_err("could not request power off GPIO\n");
		return 0;
	}

	pm_power_off = em7210_power_off;

	return 0;
}
device_initcall(em7210_request_gpios);

static void __init em7210_init_machine(void)
{
	register_iop32x_gpio();
	platform_device_register(&em7210_serial_device);
	platform_device_register(&iop3xx_i2c0_device);
	platform_device_register(&iop3xx_i2c1_device);
	platform_device_register(&em7210_flash_device);
	platform_device_register(&iop3xx_dma_0_channel);
	platform_device_register(&iop3xx_dma_1_channel);

	i2c_register_board_info(0, em7210_i2c_devices,
		ARRAY_SIZE(em7210_i2c_devices));
}

MACHINE_START(EM7210, "Lanner EM7210")
	.atag_offset	= 0x100,
	.map_io		= em7210_map_io,
	.init_irq	= iop32x_init_irq,
	.init_time	= em7210_timer_init,
	.init_machine	= em7210_init_machine,
	.restart	= iop3xx_restart,
MACHINE_END
Commit	Line	Data
a8135fcf AP	1	/*
	2	* arch/arm/mach-iop32x/em7210.c
	3	*
	4	* Board support code for the Lanner EM7210 platforms.
	5	*
	6	* Based on arch/arm/mach-iop32x/iq31244.c file.
	7	*
	8	* Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org>
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*
	14	*/
	15
	16	#include <linux/mm.h>
	17	#include <linux/init.h>
	18	#include <linux/kernel.h>
	19	#include <linux/pci.h>
	20	#include <linux/pm.h>
	21	#include <linux/serial_core.h>
	22	#include <linux/serial_8250.h>
	23	#include <linux/mtd/physmap.h>
	24	#include <linux/platform_device.h>
fe885fa2	25	#include <linux/i2c.h>
afbf1e15	26	#include <linux/gpio.h>
a09e64fb	27	#include <mach/hardware.h>
a8135fcf AP	28	#include <linux/io.h>
	29	#include <linux/irq.h>
	30	#include <asm/mach/arch.h>
	31	#include <asm/mach/map.h>
	32	#include <asm/mach/pci.h>
	33	#include <asm/mach/time.h>
	34	#include <asm/mach-types.h>
a09e64fb	35	#include <mach/time.h>
7b85b867	36	#include "gpio-iop32x.h"
a8135fcf AP	37
	38	static void __init em7210_timer_init(void)
	39	{
	40	/* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */
	41	/* 33.333 MHz crystal. */
	42	iop_init_time(200000000);
	43	}
	44
fe885fa2 AP	45	/*
	46	* EM7210 RTC
	47	*/
	48	static struct i2c_board_info __initdata em7210_i2c_devices[] = {
	49	{
3760f736	50	I2C_BOARD_INFO("rs5c372a", 0x32),
fe885fa2 AP	51	},
fe885fa2 AP	52	};
a8135fcf AP	53
	54	/*
	55	* EM7210 I/O
	56	*/
	57	static struct map_desc em7210_io_desc[] __initdata = {
	58	{ /* on-board devices */
	59	.virtual = IQ31244_UART,
	60	.pfn = __phys_to_pfn(IQ31244_UART),
	61	.length = 0x00100000,
	62	.type = MT_DEVICE,
	63	},
	64	};
	65
	66	void __init em7210_map_io(void)
	67	{
	68	iop3xx_map_io();
	69	iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));
	70	}
	71
	72
	73	/*
	74	* EM7210 PCI
	75	*/
	76	#define INTA IRQ_IOP32X_XINT0
	77	#define INTB IRQ_IOP32X_XINT1
	78	#define INTC IRQ_IOP32X_XINT2
	79	#define INTD IRQ_IOP32X_XINT3
	80
	81	static int __init
d5341942	82	em7210_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
a8135fcf AP	83	{
	84	static int pci_irq_table[][4] = {
	85	/*
	86	* PCI IDSEL/INTPIN->INTLINE
	87	* A B C D
	88	*/
	89	{INTB, INTB, INTB, INTB}, /* console / uart */
	90	{INTA, INTA, INTA, INTA}, /* 1st 82541 */
	91	{INTD, INTD, INTD, INTD}, /* 2nd 82541 */
	92	{INTC, INTC, INTC, INTC}, /* GD31244 */
	93	{INTD, INTA, INTA, INTA}, /* mini-PCI */
	94	{INTD, INTC, INTA, INTA}, /* NEC USB */
	95	};
	96
	97	if (pin < 1 \|\| pin > 4)
	98	return -1;
	99
	100	return pci_irq_table[slot % 6][pin - 1];
	101	}
	102
	103	static struct hw_pci em7210_pci __initdata = {
a8135fcf	104	.nr_controllers = 1,
c23bfc38	105	.ops = &iop3xx_ops,
a8135fcf AP	106	.setup = iop3xx_pci_setup,
a8135fcf AP	107	.preinit = iop3xx_pci_preinit,
a8135fcf AP	108	.map_irq = em7210_pci_map_irq,
	109	};
	110
	111	static int __init em7210_pci_init(void)
	112	{
	113	if (machine_is_em7210())
	114	pci_common_init(&em7210_pci);
	115
	116	return 0;
	117	}
	118
	119	subsys_initcall(em7210_pci_init);
	120
	121
	122	/*
	123	* EM7210 Flash
	124	*/
	125	static struct physmap_flash_data em7210_flash_data = {
	126	.width = 2,
	127	};
	128
	129	static struct resource em7210_flash_resource = {
	130	.start = 0xf0000000,
	131	.end = 0xf1ffffff,
	132	.flags = IORESOURCE_MEM,
	133	};
	134
	135	static struct platform_device em7210_flash_device = {
	136	.name = "physmap-flash",
	137	.id = 0,
	138	.dev = {
	139	.platform_data = &em7210_flash_data,
	140	},
	141	.num_resources = 1,
	142	.resource = &em7210_flash_resource,
	143	};
	144
	145
	146	/*
	147	* EM7210 UART
	148	* The physical address of the serial port is 0xfe800000,
	149	* so it can be used for physical and virtual address.
	150	*/
	151	static struct plat_serial8250_port em7210_serial_port[] = {
	152	{
	153	.mapbase = IQ31244_UART,
	154	.membase = (char *)IQ31244_UART,
	155	.irq = IRQ_IOP32X_XINT1,
	156	.flags = UPF_SKIP_TEST,
	157	.iotype = UPIO_MEM,
	158	.regshift = 0,
	159	.uartclk = 1843200,
	160	},
	161	{ },
	162	};
	163
	164	static struct resource em7210_uart_resource = {
	165	.start = IQ31244_UART,
	166	.end = IQ31244_UART + 7,
	167	.flags = IORESOURCE_MEM,
	168	};
	169
	170	static struct platform_device em7210_serial_device = {
	171	.name = "serial8250",
172	.id = PLAT8250_DEV_PLATFORM,
173	.dev = {
174	.platform_data = em7210_serial_port,
175	},
176	.num_resources = 1,
177	.resource = &em7210_uart_resource,
178	};
179
afbf1e15 LW	180	#define EM7210_HARDWARE_POWER 0
afbf1e15 LW	181
a8135fcf AP	182	void em7210_power_off(void)
a8135fcf AP	183	{
afbf1e15 LW	184	int ret;
	185
	186	ret = gpio_direction_output(EM7210_HARDWARE_POWER, 1);
	187	if (ret)
	188	pr_crit("could not drive power off GPIO high\n");
	189	}
	190
	191	static int __init em7210_request_gpios(void)
	192	{
	193	int ret;
	194
	195	if (!machine_is_em7210())
	196	return 0;
	197
	198	ret = gpio_request(EM7210_HARDWARE_POWER, "power");
	199	if (ret) {
	200	pr_err("could not request power off GPIO\n");
	201	return 0;
	202	}
	203
	204	pm_power_off = em7210_power_off;
	205
	206	return 0;
a8135fcf	207	}
afbf1e15	208	device_initcall(em7210_request_gpios);
a8135fcf AP	209
	210	static void __init em7210_init_machine(void)
	211	{
7b85b867	212	register_iop32x_gpio();
a8135fcf AP	213	platform_device_register(&em7210_serial_device);
	214	platform_device_register(&iop3xx_i2c0_device);
	215	platform_device_register(&iop3xx_i2c1_device);
	216	platform_device_register(&em7210_flash_device);
	217	platform_device_register(&iop3xx_dma_0_channel);
	218	platform_device_register(&iop3xx_dma_1_channel);
	219
fe885fa2 AP	220	i2c_register_board_info(0, em7210_i2c_devices,
fe885fa2 AP	221	ARRAY_SIZE(em7210_i2c_devices));
a8135fcf AP	222	}
	223
	224	MACHINE_START(EM7210, "Lanner EM7210")
1896746d	225	.atag_offset = 0x100,
a8135fcf AP	226	.map_io = em7210_map_io,
a8135fcf AP	227	.init_irq = iop32x_init_irq,
6bb27d73	228	.init_time = em7210_timer_init,
a8135fcf	229	.init_machine = em7210_init_machine,
bec92b1e	230	.restart = iop3xx_restart,
a8135fcf	231	MACHINE_END