/*
 * arch/arm/mach-orion5x/net2big-setup.c
 *
 * LaCie 2Big Network NAS setup
 *
 * Copyright (C) 2009 Simon Guinot <sguinot@lacie.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/leds.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/ata_platform.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/orion5x.h>
#include <plat/orion-gpio.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * LaCie 2Big Network Info
 ****************************************************************************/

/*
 * 512KB NOR flash Device bus boot chip select
 */

#define NET2BIG_NOR_BOOT_BASE		0xfff80000
#define NET2BIG_NOR_BOOT_SIZE		SZ_512K

/*****************************************************************************
 * 512KB NOR Flash on Boot Device
 ****************************************************************************/

/*
 * TODO: Check write support on flash MX29LV400CBTC-70G
 */

static struct mtd_partition net2big_partitions[] = {
	{
		.name		= "Full512kb",
		.size		= MTDPART_SIZ_FULL,
		.offset		= 0x00000000,
		.mask_flags	= MTD_WRITEABLE,
	},
};

static struct physmap_flash_data net2big_nor_flash_data = {
	.width		= 1,
	.parts		= net2big_partitions,
	.nr_parts	= ARRAY_SIZE(net2big_partitions),
};

static struct resource net2big_nor_flash_resource = {
	.flags			= IORESOURCE_MEM,
	.start			= NET2BIG_NOR_BOOT_BASE,
	.end			= NET2BIG_NOR_BOOT_BASE
					+ NET2BIG_NOR_BOOT_SIZE - 1,
};

static struct platform_device net2big_nor_flash = {
	.name			= "physmap-flash",
	.id			= 0,
	.dev		= {
		.platform_data	= &net2big_nor_flash_data,
	},
	.num_resources		= 1,
	.resource		= &net2big_nor_flash_resource,
};

/*****************************************************************************
 * Ethernet
 ****************************************************************************/

static struct mv643xx_eth_platform_data net2big_eth_data = {
	.phy_addr	= MV643XX_ETH_PHY_ADDR(8),
};

/*****************************************************************************
 * I2C devices
 ****************************************************************************/

/*
 * i2c addr | chip         | description
 * 0x32     | Ricoh 5C372b | RTC
 * 0x50     | HT24LC08     | eeprom (1kB)
 */
static struct i2c_board_info __initdata net2big_i2c_devices[] = {
	{
		I2C_BOARD_INFO("rs5c372b", 0x32),
	}, {
		I2C_BOARD_INFO("24c08", 0x50),
	},
};

/*****************************************************************************
 * SATA
 ****************************************************************************/

static struct mv_sata_platform_data net2big_sata_data = {
	.n_ports	= 2,
};

#define NET2BIG_GPIO_SATA_POWER_REQ	19
#define NET2BIG_GPIO_SATA0_POWER	23
#define NET2BIG_GPIO_SATA1_POWER	25

static void __init net2big_sata_power_init(void)
{
	int err;

	/* Configure GPIOs over MPP max number. */
	orion_gpio_set_valid(NET2BIG_GPIO_SATA0_POWER, 1);
	orion_gpio_set_valid(NET2BIG_GPIO_SATA1_POWER, 1);

	err = gpio_request(NET2BIG_GPIO_SATA0_POWER, "SATA0 power status");
	if (err == 0) {
		err = gpio_direction_input(NET2BIG_GPIO_SATA0_POWER);
		if (err)
			gpio_free(NET2BIG_GPIO_SATA0_POWER);
	}
	if (err) {
		pr_err("net2big: failed to setup SATA0 power GPIO\n");
		return;
	}

	err = gpio_request(NET2BIG_GPIO_SATA1_POWER, "SATA1 power status");
	if (err == 0) {
		err = gpio_direction_input(NET2BIG_GPIO_SATA1_POWER);
		if (err)
			gpio_free(NET2BIG_GPIO_SATA1_POWER);
	}
	if (err) {
		pr_err("net2big: failed to setup SATA1 power GPIO\n");
		goto err_free_1;
	}

	err = gpio_request(NET2BIG_GPIO_SATA_POWER_REQ, "SATA power request");
	if (err == 0) {
		err = gpio_direction_output(NET2BIG_GPIO_SATA_POWER_REQ, 0);
		if (err)
			gpio_free(NET2BIG_GPIO_SATA_POWER_REQ);
	}
	if (err) {
		pr_err("net2big: failed to setup SATA power request GPIO\n");
		goto err_free_2;
	}

	if (gpio_get_value(NET2BIG_GPIO_SATA0_POWER) &&
		gpio_get_value(NET2BIG_GPIO_SATA1_POWER)) {
		return;
	}

	/*
	 * SATA power up on both disk is done by pulling high the CPLD power
	 * request line. The 300ms delay is related to the CPLD clock and is
	 * needed to be sure that the CPLD has take into account the low line
	 * status.
	 */
	msleep(300);
	gpio_set_value(NET2BIG_GPIO_SATA_POWER_REQ, 1);
	pr_info("net2big: power up SATA hard disks\n");

	return;

err_free_2:
	gpio_free(NET2BIG_GPIO_SATA1_POWER);
err_free_1:
	gpio_free(NET2BIG_GPIO_SATA0_POWER);

	return;
}

/*****************************************************************************
 * GPIO LEDs
 ****************************************************************************/

/*
 * The power front LEDs (blue and red) and SATA red LEDs are controlled via a
 * single GPIO line and are compatible with the leds-gpio driver.
 *
 * The SATA blue LEDs have some hardware blink capabilities which are detailed
 * in the following array:
 *
 * SATAx blue LED | SATAx activity | LED state
 *                |                |
 *       0        |       0        |  blink (rate 300ms)
 *       1        |       0        |  off
 *       ?        |       1        |  on
 *
 * Notes: The blue and the red front LED's can't be on at the same time.
 *        Blue LED have priority.
 */

#define NET2BIG_GPIO_PWR_RED_LED	6
#define NET2BIG_GPIO_PWR_BLUE_LED	16
#define NET2BIG_GPIO_PWR_LED_BLINK_STOP	7

#define NET2BIG_GPIO_SATA0_RED_LED	11
#define NET2BIG_GPIO_SATA1_RED_LED	10

#define NET2BIG_GPIO_SATA0_BLUE_LED	17
#define NET2BIG_GPIO_SATA1_BLUE_LED	13

static struct gpio_led net2big_leds[] = {
	{
		.name = "net2big:red:power",
		.gpio = NET2BIG_GPIO_PWR_RED_LED,
	},
	{
		.name = "net2big:blue:power",
		.gpio = NET2BIG_GPIO_PWR_BLUE_LED,
	},
	{
		.name = "net2big:red:sata0",
		.gpio = NET2BIG_GPIO_SATA0_RED_LED,
	},
	{
		.name = "net2big:red:sata1",
		.gpio = NET2BIG_GPIO_SATA1_RED_LED,
	},
};

static struct gpio_led_platform_data net2big_led_data = {
	.num_leds = ARRAY_SIZE(net2big_leds),
	.leds = net2big_leds,
};

static struct platform_device net2big_gpio_leds = {
	.name           = "leds-gpio",
	.id             = -1,