/*
 * Buffalo Terastation Pro II/Live Board Setup
 *
 * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
 *
 * 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/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/i2c.h>
#include <linux/serial_reg.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <mach/orion5x.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * Terastation Pro 2/Live Info
 ****************************************************************************/

/*
 * Terastation Pro 2 hardware :
 * - Marvell 88F5281-D0
 * - Marvell 88SX6042 SATA controller (PCI)
 * - Marvell 88E1118 Gigabit Ethernet PHY
 * - 256KB NOR flash
 * - 128MB of DDR RAM
 * - PCIe port (not equipped)
 */

/*
 * 256K NOR flash Device bus boot chip select
 */

#define TSP2_NOR_BOOT_BASE	0xf4000000
#define TSP2_NOR_BOOT_SIZE	SZ_256K

/*****************************************************************************
 * 256KB NOR Flash on BOOT Device
 ****************************************************************************/

static struct physmap_flash_data tsp2_nor_flash_data = {
	.width    = 1,
};

static struct resource tsp2_nor_flash_resource = {
	.flags = IORESOURCE_MEM,
	.start = TSP2_NOR_BOOT_BASE,
	.end   = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1,
};

static struct platform_device tsp2_nor_flash = {
	.name          = "physmap-flash",
	.id            = 0,
	.dev           = {
		.platform_data	= &tsp2_nor_flash_data,
	},
	.num_resources = 1,
	.resource      = &tsp2_nor_flash_resource,
};

/*****************************************************************************
 * PCI
 ****************************************************************************/
#define TSP2_PCI_SLOT0_OFFS		7
#define TSP2_PCI_SLOT0_IRQ_PIN		11

void __init tsp2_pci_preinit(void)
{
	int pin;

	/*
	 * Configure PCI GPIO IRQ pins
	 */
	pin = TSP2_PCI_SLOT0_IRQ_PIN;
	if (gpio_request(pin, "PCI Int1") == 0) {
		if (gpio_direction_input(pin) == 0) {
			irq_set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW);
		} else {
			printk(KERN_ERR "tsp2_pci_preinit failed "
					"to set_irq_type pin %d\n", pin);
			gpio_free(pin);
		}
	} else {
		printk(KERN_ERR "tsp2_pci_preinit failed to "
				"gpio_request %d\n", pin);
	}
}

static int __init tsp2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
	int irq;

	/*
	 * Check for devices with hard-wired IRQs.
	 */
	irq = orion5x_pci_map_irq(dev, slot, pin);
	if (irq != -1)
		return irq;

	/*
	 * PCI IRQs are connected via GPIOs.
	 */
	if (slot == TSP2_PCI_SLOT0_OFFS)
		return gpio_to_irq(TSP2_PCI_SLOT0_IRQ_PIN);

	return -1;
}

static struct hw_pci tsp2_pci __initdata = {
	.nr_controllers = 2,
	.preinit        = tsp2_pci_preinit,
	.setup          = orion5x_pci_sys_setup,
	.scan           = orion5x_pci_sys_scan_bus,
	.map_irq        = tsp2_pci_map_irq,
};

static int __init tsp2_pci_init(void)
{
	if (machine_is_terastation_pro2())
		pci_common_init(&tsp2_pci);

	return 0;
}

subsys_initcall(tsp2_pci_init);