root/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c
// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
 */

#include <linux/kernel.h>
#include <linux/module.h>

#include "../mt76x02_usb.h"
#include "mt76x2u.h"

static const struct usb_device_id mt76x2u_device_table[] = {
        { USB_DEVICE(0x0b05, 0x1833) }, /* Asus USB-AC54 */
        { USB_DEVICE(0x0b05, 0x17eb) }, /* Asus USB-AC55 */
        { USB_DEVICE(0x0b05, 0x180b) }, /* Asus USB-N53 B1 */
        { USB_DEVICE(0x0e8d, 0x7612) }, /* Aukey USBAC1200 - Alfa AWUS036ACM */
        { USB_DEVICE(0x057c, 0x8503) }, /* Avm FRITZ!WLAN AC860 */
        { USB_DEVICE(0x7392, 0xb711) }, /* Edimax EW 7722 UAC */
        { USB_DEVICE(0x0e8d, 0x7632) }, /* HC-M7662BU1 */
        { USB_DEVICE(0x0471, 0x2126) }, /* LiteOn WN4516R module, nonstandard USB connector */
        { USB_DEVICE(0x0471, 0x7600) }, /* LiteOn WN4519R module, nonstandard USB connector */
        { USB_DEVICE(0x2c4e, 0x0103) }, /* Mercury UD13 */
        { USB_DEVICE(0x0846, 0x9014) }, /* Netgear WNDA3100v3 */
        { USB_DEVICE(0x0846, 0x9053) }, /* Netgear A6210 */
        { USB_DEVICE(0x045e, 0x02e6) }, /* XBox One Wireless Adapter */
        { USB_DEVICE(0x045e, 0x02fe) }, /* XBox One Wireless Adapter */
        { USB_DEVICE(0x2357, 0x0137) }, /* TP-Link TL-WDN6200 */
        { },
};

static int mt76x2u_probe(struct usb_interface *intf,
                         const struct usb_device_id *id)
{
        static const struct mt76_driver_ops drv_ops = {
                .drv_flags = MT_DRV_SW_RX_AIRTIME |
                             MT_DRV_IGNORE_TXS_FAILED,
                .survey_flags = SURVEY_INFO_TIME_TX,
                .update_survey = mt76x02_update_channel,
                .set_channel = mt76x2u_set_channel,
                .tx_prepare_skb = mt76x02u_tx_prepare_skb,
                .tx_complete_skb = mt76x02u_tx_complete_skb,
                .tx_status_data = mt76x02_tx_status_data,
                .rx_skb = mt76x02_queue_rx_skb,
                .sta_ps = mt76x02_sta_ps,
                .sta_add = mt76x02_sta_add,
                .sta_remove = mt76x02_sta_remove,
        };
        struct usb_device *udev = interface_to_usbdev(intf);
        struct mt76x02_dev *dev;
        struct mt76_dev *mdev;
        int err;

        mdev = mt76_alloc_device(&intf->dev, sizeof(*dev), &mt76x2u_ops,
                                 &drv_ops);
        if (!mdev)
                return -ENOMEM;

        dev = container_of(mdev, struct mt76x02_dev, mt76);

        udev = usb_get_dev(udev);
        usb_reset_device(udev);

        usb_set_intfdata(intf, dev);

        mt76x02u_init_mcu(mdev);
        err = mt76u_init(mdev, intf);
        if (err < 0)
                goto err;

        mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
        dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
        if (!is_mt76x2(dev)) {
                err = -ENODEV;
                goto err;
        }

        err = mt76x2u_register_device(dev);
        if (err < 0)
                goto err;

        return 0;

err:
        mt76u_queues_deinit(&dev->mt76);
        mt76_free_device(&dev->mt76);
        usb_set_intfdata(intf, NULL);
        usb_put_dev(udev);

        return err;
}

static void mt76x2u_disconnect(struct usb_interface *intf)
{
        struct usb_device *udev = interface_to_usbdev(intf);
        struct mt76x02_dev *dev = usb_get_intfdata(intf);
        struct ieee80211_hw *hw = mt76_hw(dev);

        set_bit(MT76_REMOVED, &dev->mphy.state);
        ieee80211_unregister_hw(hw);
        mt76x2u_cleanup(dev);
        mt76_free_device(&dev->mt76);
        usb_set_intfdata(intf, NULL);
        usb_put_dev(udev);
}

static int __maybe_unused mt76x2u_suspend(struct usb_interface *intf,
                                          pm_message_t state)
{
        struct mt76x02_dev *dev = usb_get_intfdata(intf);

        mt76u_stop_rx(&dev->mt76);

        return 0;
}

static int __maybe_unused mt76x2u_resume(struct usb_interface *intf)
{
        struct mt76x02_dev *dev = usb_get_intfdata(intf);
        int err;

        err = mt76u_resume_rx(&dev->mt76);
        if (err < 0)
                goto err;

        err = mt76x2u_init_hardware(dev);
        if (err < 0)
                goto err;

        return 0;

err:
        mt76x2u_cleanup(dev);
        return err;
}

MODULE_DEVICE_TABLE(usb, mt76x2u_device_table);
MODULE_FIRMWARE(MT7662_FIRMWARE);
MODULE_FIRMWARE(MT7662_ROM_PATCH);

static struct usb_driver mt76x2u_driver = {
        .name           = KBUILD_MODNAME,
        .id_table       = mt76x2u_device_table,
        .probe          = mt76x2u_probe,
        .disconnect     = mt76x2u_disconnect,
#ifdef CONFIG_PM
        .suspend        = mt76x2u_suspend,
        .resume         = mt76x2u_resume,
        .reset_resume   = mt76x2u_resume,
#endif /* CONFIG_PM */
        .soft_unbind    = 1,
        .disable_hub_initiated_lpm = 1,
};
module_usb_driver(mt76x2u_driver);

MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
MODULE_DESCRIPTION("MediaTek MT76x2U (USB) wireless driver");
MODULE_LICENSE("Dual BSD/GPL");