zircon/system/dev/board/test/test-gpio.cc

// 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 "test.h"

namespace board_test {

namespace {

static const gpio_pin_t gpio_pins[] = {
    { 1 },
    { 3 },
    { 5 },
};

static const pbus_metadata_t gpio_metadata[] = {
    {
        .type = DEVICE_METADATA_GPIO_PINS,
        .data_buffer = &gpio_pins,
        .data_size = sizeof(gpio_pins),
    }
};

}

zx_status_t TestBoard::GpioInit() {
    pbus_dev_t gpio_dev = {};
    gpio_dev.name = "gpio";
    gpio_dev.vid = PDEV_VID_TEST;
    gpio_dev.pid = PDEV_PID_PBUS_TEST;
    gpio_dev.did = PDEV_DID_TEST_GPIO;
    gpio_dev.metadata_list = gpio_metadata;
    gpio_dev.metadata_count = countof(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;
    }

    return ZX_OK;
}

} // namespace board_test