system/dev/board/astro/astro-usb.c

// 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/protocol/platform-defs.h>
#include <soc/aml-common/aml-usb-phy-v2.h>
#include <soc/aml-s905d2/s905d2-hw.h>

#include "astro.h"

static const pbus_mmio_t xhci_mmios[] = {
    {
        .base = S905D2_USB0_BASE,
        .length = S905D2_USB0_LENGTH,
    },
};

static const pbus_irq_t xhci_irqs[] = {
    {
        .irq = S905D2_USB0_IRQ,
        .mode = ZX_INTERRUPT_MODE_EDGE_HIGH,
    },
};

static const pbus_bti_t xhci_btis[] = {
    {
        .iommu_index = 0,
        .bti_id = BTI_USB_XHCI,
    },
};

static const pbus_dev_t xhci_dev = {
    .name = "xhci",
    .vid = PDEV_VID_GENERIC,
    .pid = PDEV_PID_GENERIC,
    .did = PDEV_DID_USB_XHCI,
    .mmios = xhci_mmios,
    .mmio_count = countof(xhci_mmios),
    .irqs = xhci_irqs,
    .irq_count = countof(xhci_irqs),
    .btis = xhci_btis,
    .bti_count = countof(xhci_btis),
};

zx_status_t aml_usb_init(aml_bus_t* bus) {
    zx_handle_t bti;

    zx_status_t status = iommu_get_bti(&bus->iommu, 0, BTI_BOARD, &bti);
    if (status != ZX_OK) {
        zxlogf(ERROR, "aml_usb_init: iommu_get_bti failed: %d\n", status);
        return status;
    }

    status = aml_usb_phy_v2_init(bti);
    zx_handle_close(bti);
    if (status != ZX_OK) {
        return status;
    }

    return pbus_device_add(&bus->pbus, &xhci_dev, 0);
}