/*

   * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices

   *
   * based on usbnet.c, asix.c and the vendor provided mcs7830 driver
   *

   * Copyright (C) 2010 Andreas Mohr <andi@lisas.de>

   * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>
   * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
   * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
   * Copyright (c) 2002-2003 TiVo Inc.
   *

   * Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!).
   *

   * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"),
   *             per active notification by manufacturer
   *

   * TODO:

   * - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?)
   * - implement ethtool_ops get_pauseparam/set_pauseparam
   *   via HIF_REG_PAUSE_THRESHOLD (>= revision C only!)
   * - implement get_eeprom/[set_eeprom]
   * - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII)
   * - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs,
   *   can access only ~ 24, remaining user buffer is uninitialized garbage
   * - anything else?
   *
   *

   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License

   * along with this program; if not, see <http://www.gnu.org/licenses/>.

   */
  
  #include <linux/crc32.h>
  #include <linux/etherdevice.h>
  #include <linux/ethtool.h>

  #include <linux/mii.h>
  #include <linux/module.h>
  #include <linux/netdevice.h>

  #include <linux/slab.h>

  #include <linux/usb.h>

  #include <linux/usb/usbnet.h>

  
  /* requests */
  #define MCS7830_RD_BMREQ	(USB_DIR_IN  | USB_TYPE_VENDOR | \
  				 USB_RECIP_DEVICE)
  #define MCS7830_WR_BMREQ	(USB_DIR_OUT | USB_TYPE_VENDOR | \
  				 USB_RECIP_DEVICE)
  #define MCS7830_RD_BREQ		0x0E
  #define MCS7830_WR_BREQ		0x0D
  
  #define MCS7830_CTRL_TIMEOUT	1000
  #define MCS7830_MAX_MCAST	64
  
  #define MCS7830_VENDOR_ID	0x9710

  #define MCS7832_PRODUCT_ID	0x7832

  #define MCS7830_PRODUCT_ID	0x7830

  #define MCS7730_PRODUCT_ID	0x7730
  
  #define SITECOM_VENDOR_ID	0x0DF6
  #define LN_030_PRODUCT_ID	0x0021

  
  #define MCS7830_MII_ADVERTISE	(ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \
  				 ADVERTISE_100HALF | ADVERTISE_10FULL | \
  				 ADVERTISE_10HALF | ADVERTISE_CSMA)

  /* HIF_REG_XX corresponding index value */

  enum {
  	HIF_REG_MULTICAST_HASH			= 0x00,
  	HIF_REG_PACKET_GAP1			= 0x08,
  	HIF_REG_PACKET_GAP2			= 0x09,
  	HIF_REG_PHY_DATA			= 0x0a,
  	HIF_REG_PHY_CMD1			= 0x0c,
  	   HIF_REG_PHY_CMD1_READ		= 0x40,
  	   HIF_REG_PHY_CMD1_WRITE		= 0x20,
  	   HIF_REG_PHY_CMD1_PHYADDR		= 0x01,
  	HIF_REG_PHY_CMD2			= 0x0d,
  	   HIF_REG_PHY_CMD2_PEND_FLAG_BIT	= 0x80,
  	   HIF_REG_PHY_CMD2_READY_FLAG_BIT	= 0x40,
  	HIF_REG_CONFIG				= 0x0e,

  	/* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */

  	   HIF_REG_CONFIG_CFG			= 0x80,
  	   HIF_REG_CONFIG_SPEED100		= 0x40,
  	   HIF_REG_CONFIG_FULLDUPLEX_ENABLE	= 0x20,
  	   HIF_REG_CONFIG_RXENABLE		= 0x10,
  	   HIF_REG_CONFIG_TXENABLE		= 0x08,
  	   HIF_REG_CONFIG_SLEEPMODE		= 0x04,
  	   HIF_REG_CONFIG_ALLMULTICAST		= 0x02,

  	   HIF_REG_CONFIG_PROMISCUOUS		= 0x01,

  	HIF_REG_ETHERNET_ADDR			= 0x0f,

  	HIF_REG_FRAME_DROP_COUNTER		= 0x15, /* 0..ff; reset: 0 */

  	HIF_REG_PAUSE_THRESHOLD			= 0x16,
  	   HIF_REG_PAUSE_THRESHOLD_DEFAULT	= 0,
  };

  /* Trailing status byte in Ethernet Rx frame */
  enum {
  	MCS7830_RX_SHORT_FRAME		= 0x01, /* < 64 bytes */
  	MCS7830_RX_LENGTH_ERROR		= 0x02, /* framelen != Ethernet length field */
  	MCS7830_RX_ALIGNMENT_ERROR	= 0x04, /* non-even number of nibbles */
  	MCS7830_RX_CRC_ERROR		= 0x08,
  	MCS7830_RX_LARGE_FRAME		= 0x10, /* > 1518 bytes */
  	MCS7830_RX_FRAME_CORRECT	= 0x20, /* frame is correct */
  	/* [7:6] reserved */
  };

  struct mcs7830_data {
  	u8 multi_filter[8];
  	u8 config;
  };
  
  static const char driver_name[] = "MOSCHIP usb-ethernet driver";
  
  static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data)
  {

  	return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ,
  				0x0000, index, data, size);

  }

  static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data)

  {

  	return usbnet_write_cmd(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ,
  				0x0000, index, data, size);

  }
  
  static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data)
  {

  	usbnet_write_cmd_async(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ,
  				0x0000, index, data, size);

  }

  static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr)
  {
  	int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr);
  	if (ret < 0)
  		return ret;
  	return 0;
  }
  
  static int mcs7830_hif_set_mac_address(struct usbnet *dev, unsigned char *addr)
  {
  	int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr);
  
  	if (ret < 0)
  		return ret;
  	return 0;
  }
  
  static int mcs7830_set_mac_address(struct net_device *netdev, void *p)

  {
  	int ret;

  	struct usbnet *dev = netdev_priv(netdev);
  	struct sockaddr *addr = p;
  
  	if (netif_running(netdev))
  		return -EBUSY;
  
  	if (!is_valid_ether_addr(addr->sa_data))

  		return -EADDRNOTAVAIL;

  
  	ret = mcs7830_hif_set_mac_address(dev, addr->sa_data);

  	if (ret < 0)
  		return ret;

  
  	/* it worked --> adopt it on netdev side */
  	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);

  	return 0;
  }
  
  static int mcs7830_read_phy(struct usbnet *dev, u8 index)
  {
  	int ret;
  	int i;
  	__le16 val;
  
  	u8 cmd[2] = {
  		HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR,
  		HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index,
  	};

  	mutex_lock(&dev->phy_mutex);

  	/* write the MII command */
  	ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
  	if (ret < 0)
  		goto out;
  
  	/* wait for the data to become valid, should be within < 1ms */
  	for (i = 0; i < 10; i++) {
  		ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
  		if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
  			break;
  		ret = -EIO;
  		msleep(1);
  	}
  	if (ret < 0)
  		goto out;
  
  	/* read actual register contents */
  	ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val);
  	if (ret < 0)
  		goto out;
  	ret = le16_to_cpu(val);
  	dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)
  ",
  		index, val, i);
  out:

  	mutex_unlock(&dev->phy_mutex);

  	return ret;
  }
  
  static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val)
  {
  	int ret;
  	int i;
  	__le16 le_val;
  
  	u8 cmd[2] = {
  		HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR,
  		HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F),
  	};

  	mutex_lock(&dev->phy_mutex);

  	/* write the new register contents */
  	le_val = cpu_to_le16(val);
  	ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val);
  	if (ret < 0)
  		goto out;
  
  	/* write the MII command */
  	ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
  	if (ret < 0)
  		goto out;
  
  	/* wait for the command to be accepted by the PHY */
  	for (i = 0; i < 10; i++) {
  		ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd);
  		if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT))
  			break;
  		ret = -EIO;
  		msleep(1);
  	}
  	if (ret < 0)
  		goto out;
  
  	ret = 0;
  	dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)
  ",
  		index, val, i);
  out:

  	mutex_unlock(&dev->phy_mutex);

  	return ret;
  }
  
  /*
   * This algorithm comes from the original mcs7830 version 1.4 driver,
   * not sure if it is needed.
   */
  static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode)
  {
  	int ret;
  	/* Enable all media types */
  	ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE);
  
  	/* First reset BMCR */
  	if (!ret)
  		ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000);
  	/* Enable Auto Neg */
  	if (!ret)
  		ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE);
  	/* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */
  	if (!ret)
  		ret = mcs7830_write_phy(dev, MII_BMCR,
  				BMCR_ANENABLE | BMCR_ANRESTART	);

  	return ret;

  }
  
  
  /*
   * if we can read register 22, the chip revision is C or higher
   */
  static int mcs7830_get_rev(struct usbnet *dev)
  {
  	u8 dummy[2];
  	int ret;

  	ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy);

  	if (ret > 0)
  		return 2; /* Rev C or later */
  	return 1; /* earlier revision */
  }
  
  /*
   * On rev. C we need to set the pause threshold
   */
  static void mcs7830_rev_C_fixup(struct usbnet *dev)
  {
  	u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT;
  	int retry;
  
  	for (retry = 0; retry < 2; retry++) {
  		if (mcs7830_get_rev(dev) == 2) {
  			dev_info(&dev->udev->dev, "applying rev.C fixup
  ");
  			mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD,
  					1, &pause_threshold);
  		}
  		msleep(1);
  	}
  }

  static int mcs7830_mdio_read(struct net_device *netdev, int phy_id,
  			     int location)
  {

  	struct usbnet *dev = netdev_priv(netdev);

  	return mcs7830_read_phy(dev, location);
  }
  
  static void mcs7830_mdio_write(struct net_device *netdev, int phy_id,
  				int location, int val)
  {

  	struct usbnet *dev = netdev_priv(netdev);

  	mcs7830_write_phy(dev, location, val);
  }
  
  static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
  {
  	struct usbnet *dev = netdev_priv(net);
  	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
  }

  static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev)
  {
  	return (struct mcs7830_data *)&dev->data;
  }
  
  static void mcs7830_hif_update_multicast_hash(struct usbnet *dev)
  {
  	struct mcs7830_data *data = mcs7830_get_data(dev);
  	mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH,
  				sizeof data->multi_filter,
  				data->multi_filter);
  }
  
  static void mcs7830_hif_update_config(struct usbnet *dev)
  {
  	/* implementation specific to data->config
             (argument needs to be heap-based anyway - USB DMA!) */
  	struct mcs7830_data *data = mcs7830_get_data(dev);
  	mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config);
  }
  
  static void mcs7830_data_set_multicast(struct net_device *net)

  {
  	struct usbnet *dev = netdev_priv(net);

  	struct mcs7830_data *data = mcs7830_get_data(dev);
  
  	memset(data->multi_filter, 0, sizeof data->multi_filter);

  
  	data->config = HIF_REG_CONFIG_TXENABLE;
  
  	/* this should not be needed, but it doesn't work otherwise */
  	data->config |= HIF_REG_CONFIG_ALLMULTICAST;
  
  	if (net->flags & IFF_PROMISC) {

  		data->config |= HIF_REG_CONFIG_PROMISCUOUS;

  	} else if (net->flags & IFF_ALLMULTI ||

  		   netdev_mc_count(net) > MCS7830_MAX_MCAST) {

  		data->config |= HIF_REG_CONFIG_ALLMULTICAST;

  	} else if (netdev_mc_empty(net)) {

  		/* just broadcast and directed */
  	} else {
  		/* We use the 20 byte dev->data
  		 * for our 8 byte filter buffer
  		 * to avoid allocating memory that
  		 * is tricky to free later */

  		struct netdev_hw_addr *ha;

  		u32 crc_bits;

  		/* Build the multicast hash filter. */

  		netdev_for_each_mc_addr(ha, net) {
  			crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;

  			data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7);

  		}

  	}
  }

  static int mcs7830_apply_base_config(struct usbnet *dev)
  {
  	int ret;
  
  	/* re-configure known MAC (suspend case etc.) */
  	ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr);
  	if (ret) {
  		dev_info(&dev->udev->dev, "Cannot set MAC address
  ");
  		goto out;

  	}

  	/* Set up PHY */
  	ret = mcs7830_set_autoneg(dev, 0);
  	if (ret) {
  		dev_info(&dev->udev->dev, "Cannot set autoneg
  ");
  		goto out;
  	}
  
  	mcs7830_hif_update_multicast_hash(dev);
  	mcs7830_hif_update_config(dev);
  
  	mcs7830_rev_C_fixup(dev);
  	ret = 0;
  out:
  	return ret;
  }
  
  /* credits go to asix_set_multicast */
  static void mcs7830_set_multicast(struct net_device *net)
  {
  	struct usbnet *dev = netdev_priv(net);
  
  	mcs7830_data_set_multicast(net);
  
  	mcs7830_hif_update_multicast_hash(dev);
  	mcs7830_hif_update_config(dev);

  }
  
  static int mcs7830_get_regs_len(struct net_device *net)
  {
  	struct usbnet *dev = netdev_priv(net);
  
  	switch (mcs7830_get_rev(dev)) {
  	case 1:
  		return 21;
  	case 2:
  		return 32;
  	}
  	return 0;
  }
  
  static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo)
  {
  	usbnet_get_drvinfo(net, drvinfo);
  	drvinfo->regdump_len = mcs7830_get_regs_len(net);
  }
  
  static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data)
  {
  	struct usbnet *dev = netdev_priv(net);
  
  	regs->version = mcs7830_get_rev(dev);
  	mcs7830_get_reg(dev, 0, regs->len, data);
  }

  static const struct ethtool_ops mcs7830_ethtool_ops = {

  	.get_drvinfo		= mcs7830_get_drvinfo,
  	.get_regs_len		= mcs7830_get_regs_len,
  	.get_regs		= mcs7830_get_regs,
  
  	/* common usbnet calls */

  	.get_link		= usbnet_get_link,

  	.get_msglevel		= usbnet_get_msglevel,
  	.set_msglevel		= usbnet_set_msglevel,

  	.get_settings		= usbnet_get_settings,
  	.set_settings		= usbnet_set_settings,
  	.nway_reset		= usbnet_nway_reset,

  };

  static const struct net_device_ops mcs7830_netdev_ops = {
  	.ndo_open		= usbnet_open,
  	.ndo_stop		= usbnet_stop,
  	.ndo_start_xmit		= usbnet_start_xmit,
  	.ndo_tx_timeout		= usbnet_tx_timeout,
  	.ndo_change_mtu		= usbnet_change_mtu,
  	.ndo_validate_addr	= eth_validate_addr,
  	.ndo_do_ioctl 		= mcs7830_ioctl,

  	.ndo_set_rx_mode	= mcs7830_set_multicast,

  	.ndo_set_mac_address	= mcs7830_set_mac_address,

  };

  static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
  {
  	struct net_device *net = dev->net;
  	int ret;

  	int retry;

  	/* Initial startup: Gather MAC address setting from EEPROM */
  	ret = -EINVAL;
  	for (retry = 0; retry < 5 && ret; retry++)
  		ret = mcs7830_hif_get_mac_address(dev, net->dev_addr);
  	if (ret) {
  		dev_warn(&dev->udev->dev, "Cannot read MAC address
  ");
  		goto out;
  	}
  
  	mcs7830_data_set_multicast(net);
  
  	ret = mcs7830_apply_base_config(dev);

  	if (ret)
  		goto out;

  	net->ethtool_ops = &mcs7830_ethtool_ops;

  	net->netdev_ops = &mcs7830_netdev_ops;

  
  	/* reserve space for the status byte on rx */
  	dev->rx_urb_size = ETH_FRAME_LEN + 1;
  
  	dev->mii.mdio_read = mcs7830_mdio_read;
  	dev->mii.mdio_write = mcs7830_mdio_write;
  	dev->mii.dev = net;
  	dev->mii.phy_id_mask = 0x3f;
  	dev->mii.reg_num_mask = 0x1f;
  	dev->mii.phy_id = *((u8 *) net->dev_addr + 1);
  
  	ret = usbnet_get_endpoints(dev, udev);
  out:
  	return ret;
  }

  /* The chip always appends a status byte that we need to strip */

  static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
  {
  	u8 status;

  	/* This check is no longer done by usbnet */
  	if (skb->len < dev->net->hard_header_len) {
  		dev_err(&dev->udev->dev, "unexpected tiny rx frame
  ");

  		return 0;
  	}
  
  	skb_trim(skb, skb->len - 1);
  	status = skb->data[skb->len];

  	if (status != MCS7830_RX_FRAME_CORRECT) {

  		dev_dbg(&dev->udev->dev, "rx fixup status %x
  ", status);

  		/* hmm, perhaps usbnet.c already sees a globally visible
  		   frame error and increments rx_errors on its own already? */
  		dev->net->stats.rx_errors++;
  
  		if (status &	(MCS7830_RX_SHORT_FRAME
  				|MCS7830_RX_LENGTH_ERROR
  				|MCS7830_RX_LARGE_FRAME))
  			dev->net->stats.rx_length_errors++;
  		if (status & MCS7830_RX_ALIGNMENT_ERROR)
  			dev->net->stats.rx_frame_errors++;
  		if (status & MCS7830_RX_CRC_ERROR)
  			dev->net->stats.rx_crc_errors++;
  	}

  	return skb->len > 0;
  }

  static void mcs7830_status(struct usbnet *dev, struct urb *urb)
  {
  	u8 *buf = urb->transfer_buffer;

  	bool link, link_changed;

  
  	if (urb->actual_length < 16)
  		return;

  	link = !(buf[1] == 0x20);

  	link_changed = netif_carrier_ok(dev->net) != link;
  	if (link_changed) {

  		usbnet_link_change(dev, link, 0);
  		netdev_dbg(dev->net, "Link Status is: %d
  ", link);
  	}

  }

  static const struct driver_info moschip_info = {

  	.description	= "MOSCHIP 7830/7832/7730 usb-NET adapter",

  	.bind		= mcs7830_bind,
  	.rx_fixup	= mcs7830_rx_fixup,

  	.flags		= FLAG_ETHER | FLAG_LINK_INTR,
  	.status		= mcs7830_status,

  	.in		= 1,
  	.out		= 2,
  };
  
  static const struct driver_info sitecom_info = {
  	.description    = "Sitecom LN-30 usb-NET adapter",

  	.bind		= mcs7830_bind,
  	.rx_fixup	= mcs7830_rx_fixup,

  	.flags		= FLAG_ETHER | FLAG_LINK_INTR,
  	.status		= mcs7830_status,

  	.in		= 1,
  	.out		= 2,
  };
  
  static const struct usb_device_id products[] = {
  	{

  		USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID),
  		.driver_info = (unsigned long) &moschip_info,
  	},
  	{

  		USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
  		.driver_info = (unsigned long) &moschip_info,
  	},

  	{
  		USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID),
  		.driver_info = (unsigned long) &moschip_info,
  	},
  	{
  		USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID),
  		.driver_info = (unsigned long) &sitecom_info,
  	},

  	{},
  };
  MODULE_DEVICE_TABLE(usb, products);

  static int mcs7830_reset_resume (struct usb_interface *intf)
  {
   	/* YES, this function is successful enough that ethtool -d
             does show same output pre-/post-suspend */
  
  	struct usbnet		*dev = usb_get_intfdata(intf);
  
  	mcs7830_apply_base_config(dev);
  
  	usbnet_resume(intf);
  
  	return 0;
  }

  static struct usb_driver mcs7830_driver = {
  	.name = driver_name,
  	.id_table = products,
  	.probe = usbnet_probe,
  	.disconnect = usbnet_disconnect,
  	.suspend = usbnet_suspend,
  	.resume = usbnet_resume,

  	.reset_resume = mcs7830_reset_resume,

  	.disable_hub_initiated_lpm = 1,

  };

  module_usb_driver(mcs7830_driver);

  
  MODULE_DESCRIPTION("USB to network adapter MCS7830)");
  MODULE_LICENSE("GPL");