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/*
 *  Buffalo WZR-HP-G300NH board support
 *
 *  Copyright (C) 2010-2012 Gabor Juhos <juhosg@openwrt.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/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/nxp_74hc153.h>
#include <linux/rtl8366.h>

#include <asm/mach-ath79/ath79.h>

#include "dev-eth.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#include "dev-usb.h"
#include "dev-wmac.h"
#include "machtypes.h"

#define WZRHPG300NH_GPIO_LED_USB        0
#define WZRHPG300NH_GPIO_LED_DIAG       1
#define WZRHPG300NH_GPIO_LED_WIRELESS   6
#define WZRHPG300NH_GPIO_LED_SECURITY   17
#define WZRHPG300NH_GPIO_LED_ROUTER     18

#define WZRHPG300NH_GPIO_RTL8366_SDA    19
#define WZRHPG300NH_GPIO_RTL8366_SCK    20

#define WZRHPG300NH_GPIO_74HC153_S0     9
#define WZRHPG300NH_GPIO_74HC153_S1     11
#define WZRHPG300NH_GPIO_74HC153_1Y     12
#define WZRHPG300NH_GPIO_74HC153_2Y     14

#define WZRHPG300NH_GPIO_EXP_BASE       32
#define WZRHPG300NH_GPIO_BTN_AOSS       (WZRHPG300NH_GPIO_EXP_BASE + 0)
#define WZRHPG300NH_GPIO_BTN_RESET      (WZRHPG300NH_GPIO_EXP_BASE + 1)
#define WZRHPG300NH_GPIO_BTN_ROUTER_ON  (WZRHPG300NH_GPIO_EXP_BASE + 2)
#define WZRHPG300NH_GPIO_BTN_QOS_ON     (WZRHPG300NH_GPIO_EXP_BASE + 3)
#define WZRHPG300NH_GPIO_BTN_USB        (WZRHPG300NH_GPIO_EXP_BASE + 5)
#define WZRHPG300NH_GPIO_BTN_ROUTER_AUTO (WZRHPG300NH_GPIO_EXP_BASE + 6)
#define WZRHPG300NH_GPIO_BTN_QOS_OFF    (WZRHPG300NH_GPIO_EXP_BASE + 7)

#define WZRHPG300NH_KEYS_POLL_INTERVAL  20      /* msecs */
#define WZRHPG300NH_KEYS_DEBOUNCE_INTERVAL (3 * WZRHPG300NH_KEYS_POLL_INTERVAL)

#define WZRHPG300NH_MAC_OFFSET          0x20c

static struct mtd_partition wzrhpg300nh_flash_partitions[] = {
        {
                .name           = "u-boot",
                .offset         = 0,
                .size           = 0x0040000,
                .mask_flags     = MTD_WRITEABLE,
        }, {
                .name           = "u-boot-env",
                .offset         = 0x0040000,
                .size           = 0x0020000,
                .mask_flags     = MTD_WRITEABLE,
        }, {
                .name           = "firmware",
                .offset         = 0x0060000,
                .size           = 0x1f60000,
        }, {
                .name           = "user_property",
                .offset         = 0x1fc0000,
                .size           = 0x0020000,
                .mask_flags     = MTD_WRITEABLE,
        }, {
                .name           = "art",
                .offset         = 0x1fe0000,
                .size           = 0x0020000,
                .mask_flags     = MTD_WRITEABLE,
        }
};

static struct physmap_flash_data wzrhpg300nh_flash_data = {
        .width          = 2,
        .parts          = wzrhpg300nh_flash_partitions,
        .nr_parts       = ARRAY_SIZE(wzrhpg300nh_flash_partitions),
};

#define WZRHPG300NH_FLASH_BASE  0x1e000000
#define WZRHPG300NH_FLASH_SIZE  (32 * 1024 * 1024)

static struct resource wzrhpg300nh_flash_resources[] = {
        [0] = {
                .start  = WZRHPG300NH_FLASH_BASE,
                .end    = WZRHPG300NH_FLASH_BASE + WZRHPG300NH_FLASH_SIZE - 1,
                .flags  = IORESOURCE_MEM,
        },
};

static struct platform_device wzrhpg300nh_flash_device = {
        .name           = "physmap-flash",
        .id             = -1,
        .resource       = wzrhpg300nh_flash_resources,
        .num_resources  = ARRAY_SIZE(wzrhpg300nh_flash_resources),
        .dev            = {
                .platform_data = &wzrhpg300nh_flash_data,
        }
};

static struct gpio_led wzrhpg300nh_leds_gpio[] __initdata = {
        {
                .name           = "buffalo:orange:security",
                .gpio           = WZRHPG300NH_GPIO_LED_SECURITY,
                .active_low     = 1,
        }, {
                .name           = "buffalo:green:wireless",
                .gpio           = WZRHPG300NH_GPIO_LED_WIRELESS,
                .active_low     = 1,
        }, {
                .name           = "buffalo:green:router",
                .gpio           = WZRHPG300NH_GPIO_LED_ROUTER,
                .active_low     = 1,
        }, {
                .name           = "buffalo:red:diag",
                .gpio           = WZRHPG300NH_GPIO_LED_DIAG,
                .active_low     = 1,
        }, {
                .name           = "buffalo:blue:usb",
                .gpio           = WZRHPG300NH_GPIO_LED_USB,
                .active_low     = 1,
        }
};

static struct gpio_keys_button wzrhpg300nh_gpio_keys[] __initdata = {
        {
                .desc           = "reset",
                .type           = EV_KEY,
                .code           = KEY_RESTART,
                .debounce_interval = WZRHPG300NH_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = WZRHPG300NH_GPIO_BTN_RESET,
                .active_low     = 1,
        }, {
                .desc           = "aoss",
                .type           = EV_KEY,
                .code           = KEY_WPS_BUTTON,
                .debounce_interval = WZRHPG300NH_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = WZRHPG300NH_GPIO_BTN_AOSS,
                .active_low     = 1,
        }, {
                .desc           = "usb",
                .type           = EV_KEY,
                .code           = BTN_2,
                .debounce_interval = WZRHPG300NH_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = WZRHPG300NH_GPIO_BTN_USB,
                .active_low     = 1,
        }, {
                .desc           = "qos_on",
                .type           = EV_KEY,
                .code           = BTN_3,
                .debounce_interval = WZRHPG300NH_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = WZRHPG300NH_GPIO_BTN_QOS_ON,
                .active_low     = 0,
        }, {
                .desc           = "qos_off",
                .type           = EV_KEY,
                .code           = BTN_4,
                .debounce_interval = WZRHPG300NH_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = WZRHPG300NH_GPIO_BTN_QOS_OFF,
                .active_low     = 0,
        }, {
                .desc           = "router_on",
                .type           = EV_KEY,
                .code           = BTN_5,
                .debounce_interval = WZRHPG300NH_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = WZRHPG300NH_GPIO_BTN_ROUTER_ON,
                .active_low     = 0,
        }, {
                .desc           = "router_auto",
                .type           = EV_KEY,
                .code           = BTN_6,
                .debounce_interval = WZRHPG300NH_KEYS_DEBOUNCE_INTERVAL,
                .gpio           = WZRHPG300NH_GPIO_BTN_ROUTER_AUTO,
                .active_low     = 0,
        }
};

static struct nxp_74hc153_platform_data wzrhpg300nh_74hc153_data = {
        .gpio_base      = WZRHPG300NH_GPIO_EXP_BASE,
        .gpio_pin_s0    = WZRHPG300NH_GPIO_74HC153_S0,
        .gpio_pin_s1    = WZRHPG300NH_GPIO_74HC153_S1,
        .gpio_pin_1y    = WZRHPG300NH_GPIO_74HC153_1Y,
        .gpio_pin_2y    = WZRHPG300NH_GPIO_74HC153_2Y,
};

static struct platform_device wzrhpg300nh_74hc153_device = {
        .name           = NXP_74HC153_DRIVER_NAME,
        .id             = -1,
        .dev = {
                .platform_data  = &wzrhpg300nh_74hc153_data,
        }
};

static struct rtl8366_platform_data wzrhpg300nh_rtl8366_data = {
        .gpio_sda       = WZRHPG300NH_GPIO_RTL8366_SDA,
        .gpio_sck       = WZRHPG300NH_GPIO_RTL8366_SCK,
};

static struct platform_device wzrhpg300nh_rtl8366s_device = {
        .name           = RTL8366S_DRIVER_NAME,
        .id             = -1,
        .dev = {
                .platform_data  = &wzrhpg300nh_rtl8366_data,
        }
};

static struct platform_device wzrhpg300nh_rtl8366rb_device = {
        .name           = RTL8366RB_DRIVER_NAME,
        .id             = -1,
        .dev = {
                .platform_data  = &wzrhpg300nh_rtl8366_data,
        }
};

static void __init wzrhpg300nh_setup(void)
{
        u8 *eeprom = (u8 *) KSEG1ADDR(0x1fff1000);
        u8 *mac = eeprom + WZRHPG300NH_MAC_OFFSET;
        bool hasrtl8366rb = false;

        ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
        ath79_init_mac(ath79_eth1_data.mac_addr, mac, 1);

        if (rtl8366_smi_detect(&wzrhpg300nh_rtl8366_data) == RTL8366_TYPE_RB)
                hasrtl8366rb = true;

        if (hasrtl8366rb) {
                ath79_eth0_pll_data.pll_1000 = 0x1f000000;
                ath79_eth0_data.mii_bus_dev = &wzrhpg300nh_rtl8366rb_device.dev;
                ath79_eth1_pll_data.pll_1000 = 0x100;
                ath79_eth1_data.mii_bus_dev = &wzrhpg300nh_rtl8366rb_device.dev;
        } else {
                ath79_eth0_pll_data.pll_1000 = 0x1e000100;
                ath79_eth0_data.mii_bus_dev = &wzrhpg300nh_rtl8366s_device.dev;
                ath79_eth1_pll_data.pll_1000 = 0x1e000100;
                ath79_eth1_data.mii_bus_dev = &wzrhpg300nh_rtl8366s_device.dev;
        }

        ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
        ath79_eth0_data.speed = SPEED_1000;
        ath79_eth0_data.duplex = DUPLEX_FULL;

        ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
        ath79_eth1_data.phy_mask = 0x10;

        ath79_register_eth(0);
        ath79_register_eth(1);

        ath79_register_usb();
        ath79_register_wmac(eeprom, NULL);

        platform_device_register(&wzrhpg300nh_74hc153_device);
        platform_device_register(&wzrhpg300nh_flash_device);

        if (hasrtl8366rb)
                platform_device_register(&wzrhpg300nh_rtl8366rb_device);
        else
                platform_device_register(&wzrhpg300nh_rtl8366s_device);

        ath79_register_leds_gpio(-1, ARRAY_SIZE(wzrhpg300nh_leds_gpio),
                                        wzrhpg300nh_leds_gpio);

        ath79_register_gpio_keys_polled(-1, WZRHPG300NH_KEYS_POLL_INTERVAL,
                                         ARRAY_SIZE(wzrhpg300nh_gpio_keys),
                                         wzrhpg300nh_gpio_keys);

}

MIPS_MACHINE(ATH79_MACH_WZR_HP_G300NH, "WZR-HP-G300NH",
             "Buffalo WZR-HP-G300NH", wzrhpg300nh_setup);