/*
 * Copyright (c) 2022, sakumisu
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#include "usbh_core.h"
#include "usbh_mtp.h"

#define DEV_FORMAT "/dev/mtp"

static int usbh_mtp_connect(struct usbh_hubport *hport, uint8_t intf)
{
    struct usbh_endpoint_cfg ep_cfg = { 0 };
    struct usb_endpoint_descriptor *ep_desc;
    int ret;

    struct usbh_mtp *mtp_class = usb_malloc(sizeof(struct usbh_mtp));
    if (mtp_class == NULL) {
        USB_LOG_ERR("Fail to alloc mtp_class\r\n");
        return -ENOMEM;
    }

    memset(mtp_class, 0, sizeof(struct usbh_mtp));
    mtp_class->hport = hport;
    mtp_class->intf = intf;

    hport->config.intf[intf].priv = mtp_class;

#ifdef CONFIG_USBHOST_MTP_NOTIFY
    ep_desc = &hport->config.intf[intf].altsetting[0].ep[0].ep_desc;
    usbh_hport_activate_epx(&mtp_class->intin, hport, ep_desc);
#endif
    for (uint8_t i = 0; i < hport->config.intf[intf + 1].altsetting[0].intf_desc.bNumEndpoints; i++) {
        ep_desc = &hport->config.intf[intf + 1].altsetting[0].ep[i].ep_desc;

        if (ep_desc->bEndpointAddress & 0x80) {
            usbh_hport_activate_epx(&mtp_class->bulkin, hport, ep_desc);
        } else {
            usbh_hport_activate_epx(&mtp_class->bulkout, hport, ep_desc);
        }
    }

    strncpy(hport->config.intf[intf].devname, DEV_FORMAT, CONFIG_USBHOST_DEV_NAMELEN);

    USB_LOG_INFO("Register MTP Class:%s\r\n", hport->config.intf[intf].devname);

    return ret;
}

static int usbh_mtp_disconnect(struct usbh_hubport *hport, uint8_t intf)
{
    int ret = 0;

    struct usbh_mtp *mtp_class = (struct usbh_mtp *)hport->config.intf[intf].priv;

    if (mtp_class) {
        if (mtp_class->bulkin) {
            usbh_pipe_free(mtp_class->bulkin);
        }

        if (mtp_class->bulkout) {
            usbh_pipe_free(mtp_class->bulkout);
        }

        if (hport->config.intf[intf].devname[0] != '\0') {
            USB_LOG_INFO("Unregister MTP Class:%s\r\n", hport->config.intf[intf].devname);
        }

        memset(mtp_class, 0, sizeof(struct usbh_mtp));
        usb_free(mtp_class);
    }

    return ret;
}

static const struct usbh_class_driver mtp_class_driver = {
    .driver_name = "mtp",
    .connect = usbh_mtp_connect,
    .disconnect = usbh_mtp_disconnect
};

CLASS_INFO_DEFINE const struct usbh_class_info mtp_class_info = {
    .match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
    .class = USB_MTP_CLASS,
    .subclass = USB_MTP_SUB_CLASS,
    .protocol = USB_MTP_PROTOCOL,
    .vid = 0x00,
    .pid = 0x00,
    .class_driver = &mtp_class_driver
};