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/*
 * TL-WDR4900 v1 board setup
 *
 * Copyright (c) 2013 Gabor Juhos <juhosg@openwrt.org>
 *
 * Based on:
 *   p1010rdb.c:
 *      P1010RDB Board Setup
 *      Copyright 2011 Freescale Semiconductor Inc.
 *
 * 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/stddef.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/of_platform.h>
#include <linux/ath9k_platform.h>
#include <linux/leds.h>

#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <mm/mmu_decl.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <asm/mpic.h>

#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#include "mpc85xx.h"

void __init tl_wdr4900_v1_pic_init(void)
{
        struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
          MPIC_SINGLE_DEST_CPU,
          0, 256, " OpenPIC  ");

        BUG_ON(mpic == NULL);

        mpic_init(mpic);
}

#ifdef CONFIG_PCI
static struct gpio_led tl_wdr4900_v1_wmac_leds_gpio[] = {
        {
                .name           = "tp-link:blue:wps",
                .gpio           = 1,
                .active_low     = 1,
        },
};

static struct ath9k_platform_data tl_wdr4900_v1_wmac0_data = {
        .led_pin = 0,
        .eeprom_name = "pci_wmac0.eeprom",
        .leds = tl_wdr4900_v1_wmac_leds_gpio,
        .num_leds = ARRAY_SIZE(tl_wdr4900_v1_wmac_leds_gpio),
};

static struct ath9k_platform_data tl_wdr4900_v1_wmac1_data = {
        .led_pin = 0,
        .eeprom_name = "pci_wmac1.eeprom",
};

static void tl_wdr4900_v1_pci_wmac_fixup(struct pci_dev *dev)
{
        if (!machine_is(tl_wdr4900_v1))
                return;

        if (dev->bus->number == 1 &&
            PCI_SLOT(dev->devfn) == 0) {
                dev->dev.platform_data = &tl_wdr4900_v1_wmac0_data;
                return;
        }

        if (dev->bus->number == 3 &&
            PCI_SLOT(dev->devfn) == 0 &&
            dev->device == 0xabcd) {
                dev->dev.platform_data = &tl_wdr4900_v1_wmac1_data;

                /*
                 * The PCI header of the AR9381 chip is not programmed
                 * correctly by the bootloader and the device uses wrong
                 * data due to that. Replace the broken values with the
                 * correct ones.
                 */
                dev->device = 0x30;
                dev->class = 0x028000;

                pr_info("pci %s: AR9381 fixup applied\n", pci_name(dev));
        }
}

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID,
                        tl_wdr4900_v1_pci_wmac_fixup);
#endif /* CONFIG_PCI */

/*
 * Setup the architecture
 */
static void __init tl_wdr4900_v1_setup_arch(void)
{
        if (ppc_md.progress)
                ppc_md.progress("tl_wdr4900_v1_setup_arch()", 0);

        fsl_pci_assign_primary();

        printk(KERN_INFO "TL-WDR4900 v1 board from TP-Link\n");
}

machine_arch_initcall(tl_wdr4900_v1, mpc85xx_common_publish_devices);
machine_arch_initcall(tl_wdr4900_v1, swiotlb_setup_bus_notifier);

/*
 * Called very early, device-tree isn't unflattened
 */
static int __init tl_wdr4900_v1_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        if (of_flat_dt_is_compatible(root, "tplink,tl-wdr4900-v1"))
                return 1;

        return 0;
}

define_machine(tl_wdr4900_v1) {
        .name                   = "Freescale P1014",
        .probe                  = tl_wdr4900_v1_probe,
        .setup_arch             = tl_wdr4900_v1_setup_arch,
        .init_IRQ               = tl_wdr4900_v1_pic_init,
#ifdef CONFIG_PCI
        .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
#endif
        .get_irq                = mpic_get_irq,
        .calibrate_decr         = generic_calibrate_decr,
        .progress               = udbg_progress,
};