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/*

 * Board-specific setup code for the ATNGW100 Network Gateway

 *

 * Copyright (C) 2005-2006 Atmel Corporation

 *

 * 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/clk.h>

#include <linux/etherdevice.h>

#include <linux/i2c-gpio.h>

#include <linux/init.h>

#include <linux/linkage.h>

#include <linux/platform_device.h>

#include <linux/types.h>

#include <linux/leds.h>

#include <linux/spi/spi.h>

#include <asm/io.h>

#include <asm/setup.h>

#include <asm/arch/at32ap7000.h>

#include <asm/arch/board.h>

#include <asm/arch/init.h>

#include <asm/arch/portmux.h>

/* Initialized by bootloader-specific startup code. */

struct tag *bootloader_tags __initdata;

struct eth_addr {

	u8 addr[6];

};

static struct eth_addr __initdata hw_addr[2];

static struct eth_platform_data __initdata eth_data[2];

static struct spi_board_info spi0_board_info[] __initdata = {

	{

		.modalias	= "mtd_dataflash",

		.max_speed_hz	= 10000000,

		.chip_select	= 0,

	},

};

static struct mci_platform_data __initdata mci0_data = {

	.detect_pin	= GPIO_PIN_PC(25),

	.wp_pin		= GPIO_PIN_PE(0),

};

/*

 * The next two functions should go away as the boot loader is

 * supposed to initialize the macb address registers with a valid

 * ethernet address. But we need to keep it around for a while until

 * we can be reasonably sure the boot loader does this.

 *

 * The phy_id is ignored as the driver will probe for it.

 */

static int __init parse_tag_ethernet(struct tag *tag)

{

	int i;

	i = tag->u.ethernet.mac_index;

	if (i < ARRAY_SIZE(hw_addr))

		memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,

		       sizeof(hw_addr[i].addr));

	return 0;

}

__tagtable(ATAG_ETHERNET, parse_tag_ethernet);

static void __init set_hw_addr(struct platform_device *pdev)

{

	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	const u8 *addr;

	void __iomem *regs;

	struct clk *pclk;

	if (!res)

		return;

	if (pdev->id >= ARRAY_SIZE(hw_addr))

		return;

	addr = hw_addr[pdev->id].addr;

	if (!is_valid_ether_addr(addr))

		return;

	/*

	 * Since this is board-specific code, we'll cheat and use the

	 * physical address directly as we happen to know that it's

	 * the same as the virtual address.

	 */

	regs = (void __iomem __force *)res->start;

	pclk = clk_get(&pdev->dev, "pclk");

	if (!pclk)

		return;

	clk_enable(pclk);

	__raw_writel((addr[3] << 24) | (addr[2] << 16)

		     | (addr[1] << 8) | addr[0], regs + 0x98);

	__raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);

	clk_disable(pclk);

	clk_put(pclk);

}

void __init setup_board(void)

{

	at32_map_usart(1, 0);	/* USART 1: /dev/ttyS0, DB9 */

	at32_map_usart(3, 1);	/* USART 3: /dev/ttyS1      */

	at32_setup_serial_console(0);

}

static const struct gpio_led ngw_leds[] = {

	{ .name = "sys", .gpio = GPIO_PIN_PA(16), .active_low = 1,

		.default_trigger = "heartbeat",

	},

	{ .name = "a", .gpio = GPIO_PIN_PA(19), .active_low = 1, },

	{ .name = "b", .gpio = GPIO_PIN_PE(19), .active_low = 1, },

};

static const struct gpio_led_platform_data ngw_led_data = {

	.num_leds =	ARRAY_SIZE(ngw_leds),

	.leds =		(void *) ngw_leds,

};

static struct platform_device ngw_gpio_leds = {

	.name =		"leds-gpio",

	.id =		-1,

	.dev = {

		.platform_data = (void *) &ngw_led_data,

	}

};

#ifdef CONFIG_BOARD_ATNGW100_I2C_GPIO

static struct i2c_gpio_platform_data i2c_gpio_data = {

	.sda_pin	= GPIO_PIN_PA(6),

	.scl_pin	= GPIO_PIN_PA(7),

};

static struct platform_device i2c_gpio_device = {

	.name		= "i2c-gpio",

	.id		= 0,

	.dev		= {

		.platform_data	= &i2c_gpio_data,

	},

};

#endif

static int __init atngw100_init(void)

{

	unsigned	i;

	/*

	 * ATNGW100 uses 16-bit SDRAM interface, so we don't need to

	 * reserve any pins for it.

	 */

	at32_add_system_devices();

	at32_add_device_usart(0);

	at32_add_device_usart(1);

	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));

	set_hw_addr(at32_add_device_eth(1, &eth_data[1]));

	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));

	at32_add_device_mci(0, &mci0_data);

	at32_add_device_usba(0, NULL);

	for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {

		at32_select_gpio(ngw_leds[i].gpio,

				AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);

	}

	platform_device_register(&ngw_gpio_leds);

#ifdef CONFIG_BOARD_ATNGW100_I2C_GPIO

	at32_select_gpio(i2c_gpio_data.sda_pin, 0);

	at32_select_gpio(i2c_gpio_data.scl_pin, 0);

	platform_device_register(&i2c_gpio_device);

#else

	at32_add_device_twi(0);

#endif

	at32_add_device_ac97c (0);

	return 0;

}

postcore_initcall(atngw100_init);