// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <ddk/debug.h>
#include <ddk/device.h>
#include <ddk/metadata.h>
#include <ddk/metadata/gpio.h>
#include <ddk/platform-defs.h>
#include <ddk/protocol/platform/bus.h>
#include <soc/mt8167/mt8167-gpio.h>
#include <soc/mt8167/mt8167-hw.h>

#include "mt8167.h"

namespace board_mt8167 {

zx_status_t Mt8167::GpioInit() {

    const pbus_mmio_t gpio_mmios[] = {
        {
            .base = MT8167_GPIO_BASE,
            .length = MT8167_GPIO_SIZE,
        },
        {
            .base = MT8167_IOCFG_BASE,
            .length = MT8167_IOCFG_SIZE,
        },
        {
            .base = MT8167_EINT_BASE,
            .length = MT8167_EINT_SIZE,
        },
    };

    const pbus_irq_t gpio_irqs[] = {
        {
            .irq = MT8167_IRQ_ARM_EINT,
            .mode = ZX_INTERRUPT_MODE_LEVEL_HIGH,
        },
    };

    const gpio_pin_t cleo_gpio_pins[] = {
        // For backlight driver
        { MT8167_CLEO_GPIO_LCM_EN },
        // For display driver
        { MT8167_GPIO_LCD_RST },
        // For touch screen driver
        { MT8167_GPIO_TOUCH_INT },
        { MT8167_GPIO_TOUCH_RST },
        // For mt8167s audio out
        { MT8167_GPIO107_MSDC1_DAT1 },
        { MT8167_GPIO108_MSDC1_DAT2 },
        // For audio in
        { MT8167_GPIO24_EINT24 },
    };

    const pbus_metadata_t cleo_gpio_metadata[] = {
        {
            .type = DEVICE_METADATA_GPIO_PINS,
            .data_buffer = &cleo_gpio_pins,
            .data_size = sizeof(cleo_gpio_pins),
        }
    };

    pbus_dev_t gpio_dev = {};
    gpio_dev.name = "gpio";
    gpio_dev.vid = PDEV_VID_MEDIATEK;
    gpio_dev.did = PDEV_DID_MEDIATEK_GPIO;
    gpio_dev.mmio_list = gpio_mmios;
    gpio_dev.mmio_count = countof(gpio_mmios);
    gpio_dev.irq_list = gpio_irqs;
    gpio_dev.irq_count = countof(gpio_irqs);
    if (board_info_.vid == PDEV_VID_GOOGLE || board_info_.pid == PDEV_PID_CLEO) {
        gpio_dev.metadata_list = cleo_gpio_metadata;
        gpio_dev.metadata_count = countof(cleo_gpio_metadata);
    }

    zx_status_t status = pbus_.ProtocolDeviceAdd(ZX_PROTOCOL_GPIO_IMPL, &gpio_dev);
    if (status != ZX_OK) {
        zxlogf(ERROR, "%s: ProtocolDeviceAdd failed %d\n", __FUNCTION__, status);
        return status;
    }

    status = device_get_protocol(parent(), ZX_PROTOCOL_GPIO_IMPL, &gpio_impl_);
    if (status != ZX_OK) {
        zxlogf(ERROR, "%s: device_get_protocol failed %d\n", __func__, status);
        return status;
    }

//#define GPIO_TEST
#ifdef GPIO_TEST
    const pbus_gpio_t gpio_test_gpios[] = {
        {
            .gpio = 60, // SDA2, to test gpio_write()
        },
        {
            .gpio = 40, // EINT KPROW0 (key matrix) to test gpio_get_interrupt()
        },
    };

    pbus_dev_t gpio_test_dev = {};
    gpio_test_dev.name = "imx8mevk-gpio-test";
    gpio_test_dev.vid = PDEV_VID_GENERIC;
    gpio_test_dev.pid = PDEV_PID_GENERIC;
    gpio_test_dev.did = PDEV_DID_GPIO_TEST;
    gpio_test_dev.gpio_list = gpio_test_gpios;
    gpio_test_dev.gpio_count = countof(gpio_test_gpios);
    if ((status = pbus_.DeviceAdd(&gpio_test_dev)) != ZX_OK) {
        zxlogf(ERROR, "%s: Could not add gpio_test_dev %d\n", __FUNCTION__, status);
        return status;
    }
#endif

    return ZX_OK;
}

} // namespace board_mt8167