1 /* 2 * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices 3 * 4 * based on usbnet.c, asix.c and the vendor provided mcs7830 driver 5 * 6 * Copyright (C) 2010 Andreas Mohr <andi@lisas.de> 7 * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de> 8 * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com> 9 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net> 10 * Copyright (c) 2002-2003 TiVo Inc. 11 * 12 * Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!). 13 * 14 * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"), 15 * per active notification by manufacturer 16 * 17 * TODO: 18 * - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?) 19 * - implement ethtool_ops get_pauseparam/set_pauseparam 20 * via HIF_REG_PAUSE_THRESHOLD (>= revision C only!) 21 * - implement get_eeprom/[set_eeprom] 22 * - switch PHY on/off on ifup/ifdown (perhaps in usbnet.c, via MII) 23 * - mcs7830_get_regs() handling is weird: for rev 2 we return 32 regs, 24 * can access only ~ 24, remaining user buffer is uninitialized garbage 25 * - anything else? 26 * 27 * 28 * This program is free software; you can redistribute it and/or modify 29 * it under the terms of the GNU General Public License as published by 30 * the Free Software Foundation; either version 2 of the License, or 31 * (at your option) any later version. 32 * 33 * This program is distributed in the hope that it will be useful, 34 * but WITHOUT ANY WARRANTY; without even the implied warranty of 35 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 36 * GNU General Public License for more details. 37 * 38 * You should have received a copy of the GNU General Public License 39 * along with this program; if not, see <http://www.gnu.org/licenses/>. 40 */ 41 42 #include <linux/crc32.h> 43 #include <linux/etherdevice.h> 44 #include <linux/ethtool.h> 45 #include <linux/mii.h> 46 #include <linux/module.h> 47 #include <linux/netdevice.h> 48 #include <linux/slab.h> 49 #include <linux/usb.h> 50 #include <linux/usb/usbnet.h> 51 52 /* requests */ 53 #define MCS7830_RD_BMREQ (USB_DIR_IN | USB_TYPE_VENDOR | \ 54 USB_RECIP_DEVICE) 55 #define MCS7830_WR_BMREQ (USB_DIR_OUT | USB_TYPE_VENDOR | \ 56 USB_RECIP_DEVICE) 57 #define MCS7830_RD_BREQ 0x0E 58 #define MCS7830_WR_BREQ 0x0D 59 60 #define MCS7830_CTRL_TIMEOUT 1000 61 #define MCS7830_MAX_MCAST 64 62 63 #define MCS7830_VENDOR_ID 0x9710 64 #define MCS7832_PRODUCT_ID 0x7832 65 #define MCS7830_PRODUCT_ID 0x7830 66 #define MCS7730_PRODUCT_ID 0x7730 67 68 #define SITECOM_VENDOR_ID 0x0DF6 69 #define LN_030_PRODUCT_ID 0x0021 70 71 #define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \ 72 ADVERTISE_100HALF | ADVERTISE_10FULL | \ 73 ADVERTISE_10HALF | ADVERTISE_CSMA) 74 75 /* HIF_REG_XX corresponding index value */ 76 enum { 77 HIF_REG_MULTICAST_HASH = 0x00, 78 HIF_REG_PACKET_GAP1 = 0x08, 79 HIF_REG_PACKET_GAP2 = 0x09, 80 HIF_REG_PHY_DATA = 0x0a, 81 HIF_REG_PHY_CMD1 = 0x0c, 82 HIF_REG_PHY_CMD1_READ = 0x40, 83 HIF_REG_PHY_CMD1_WRITE = 0x20, 84 HIF_REG_PHY_CMD1_PHYADDR = 0x01, 85 HIF_REG_PHY_CMD2 = 0x0d, 86 HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80, 87 HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40, 88 HIF_REG_CONFIG = 0x0e, 89 /* hmm, spec sez: "R/W", "Except bit 3" (likely TXENABLE). */ 90 HIF_REG_CONFIG_CFG = 0x80, 91 HIF_REG_CONFIG_SPEED100 = 0x40, 92 HIF_REG_CONFIG_FULLDUPLEX_ENABLE = 0x20, 93 HIF_REG_CONFIG_RXENABLE = 0x10, 94 HIF_REG_CONFIG_TXENABLE = 0x08, 95 HIF_REG_CONFIG_SLEEPMODE = 0x04, 96 HIF_REG_CONFIG_ALLMULTICAST = 0x02, 97 HIF_REG_CONFIG_PROMISCUOUS = 0x01, 98 HIF_REG_ETHERNET_ADDR = 0x0f, 99 HIF_REG_FRAME_DROP_COUNTER = 0x15, /* 0..ff; reset: 0 */ 100 HIF_REG_PAUSE_THRESHOLD = 0x16, 101 HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0, 102 }; 103 104 /* Trailing status byte in Ethernet Rx frame */ 105 enum { 106 MCS7830_RX_SHORT_FRAME = 0x01, /* < 64 bytes */ 107 MCS7830_RX_LENGTH_ERROR = 0x02, /* framelen != Ethernet length field */ 108 MCS7830_RX_ALIGNMENT_ERROR = 0x04, /* non-even number of nibbles */ 109 MCS7830_RX_CRC_ERROR = 0x08, 110 MCS7830_RX_LARGE_FRAME = 0x10, /* > 1518 bytes */ 111 MCS7830_RX_FRAME_CORRECT = 0x20, /* frame is correct */ 112 /* [7:6] reserved */ 113 }; 114 115 struct mcs7830_data { 116 u8 multi_filter[8]; 117 u8 config; 118 }; 119 120 static const char driver_name[] = "MOSCHIP usb-ethernet driver"; 121 122 static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data) 123 { 124 return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ, 125 0x0000, index, data, size); 126 } 127 128 static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data) 129 { 130 return usbnet_write_cmd(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ, 131 0x0000, index, data, size); 132 } 133 134 static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data) 135 { 136 usbnet_write_cmd_async(dev, MCS7830_WR_BREQ, MCS7830_WR_BMREQ, 137 0x0000, index, data, size); 138 } 139 140 static int mcs7830_hif_get_mac_address(struct usbnet *dev, unsigned char *addr) 141 { 142 int ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 143 if (ret < 0) 144 return ret; 145 return 0; 146 } 147 148 static int mcs7830_hif_set_mac_address(struct usbnet *dev, unsigned char *addr) 149 { 150 int ret = mcs7830_set_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, addr); 151 152 if (ret < 0) 153 return ret; 154 return 0; 155 } 156 157 static int mcs7830_set_mac_address(struct net_device *netdev, void *p) 158 { 159 int ret; 160 struct usbnet *dev = netdev_priv(netdev); 161 struct sockaddr *addr = p; 162 163 if (netif_running(netdev)) 164 return -EBUSY; 165 166 if (!is_valid_ether_addr(addr->sa_data)) 167 return -EADDRNOTAVAIL; 168 169 ret = mcs7830_hif_set_mac_address(dev, addr->sa_data); 170 171 if (ret < 0) 172 return ret; 173 174 /* it worked --> adopt it on netdev side */ 175 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 176 177 return 0; 178 } 179 180 static int mcs7830_read_phy(struct usbnet *dev, u8 index) 181 { 182 int ret; 183 int i; 184 __le16 val; 185 186 u8 cmd[2] = { 187 HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR, 188 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index, 189 }; 190 191 mutex_lock(&dev->phy_mutex); 192 /* write the MII command */ 193 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 194 if (ret < 0) 195 goto out; 196 197 /* wait for the data to become valid, should be within < 1ms */ 198 for (i = 0; i < 10; i++) { 199 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 200 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 201 break; 202 ret = -EIO; 203 msleep(1); 204 } 205 if (ret < 0) 206 goto out; 207 208 /* read actual register contents */ 209 ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val); 210 if (ret < 0) 211 goto out; 212 ret = le16_to_cpu(val); 213 dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n", 214 index, val, i); 215 out: 216 mutex_unlock(&dev->phy_mutex); 217 return ret; 218 } 219 220 static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val) 221 { 222 int ret; 223 int i; 224 __le16 le_val; 225 226 u8 cmd[2] = { 227 HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR, 228 HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F), 229 }; 230 231 mutex_lock(&dev->phy_mutex); 232 233 /* write the new register contents */ 234 le_val = cpu_to_le16(val); 235 ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val); 236 if (ret < 0) 237 goto out; 238 239 /* write the MII command */ 240 ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 241 if (ret < 0) 242 goto out; 243 244 /* wait for the command to be accepted by the PHY */ 245 for (i = 0; i < 10; i++) { 246 ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); 247 if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) 248 break; 249 ret = -EIO; 250 msleep(1); 251 } 252 if (ret < 0) 253 goto out; 254 255 ret = 0; 256 dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n", 257 index, val, i); 258 out: 259 mutex_unlock(&dev->phy_mutex); 260 return ret; 261 } 262 263 /* 264 * This algorithm comes from the original mcs7830 version 1.4 driver, 265 * not sure if it is needed. 266 */ 267 static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode) 268 { 269 int ret; 270 /* Enable all media types */ 271 ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE); 272 273 /* First reset BMCR */ 274 if (!ret) 275 ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000); 276 /* Enable Auto Neg */ 277 if (!ret) 278 ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE); 279 /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */ 280 if (!ret) 281 ret = mcs7830_write_phy(dev, MII_BMCR, 282 BMCR_ANENABLE | BMCR_ANRESTART ); 283 return ret; 284 } 285 286 287 /* 288 * if we can read register 22, the chip revision is C or higher 289 */ 290 static int mcs7830_get_rev(struct usbnet *dev) 291 { 292 u8 dummy[2]; 293 int ret; 294 ret = mcs7830_get_reg(dev, HIF_REG_FRAME_DROP_COUNTER, 2, dummy); 295 if (ret > 0) 296 return 2; /* Rev C or later */ 297 return 1; /* earlier revision */ 298 } 299 300 /* 301 * On rev. C we need to set the pause threshold 302 */ 303 static void mcs7830_rev_C_fixup(struct usbnet *dev) 304 { 305 u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT; 306 int retry; 307 308 for (retry = 0; retry < 2; retry++) { 309 if (mcs7830_get_rev(dev) == 2) { 310 dev_info(&dev->udev->dev, "applying rev.C fixup\n"); 311 mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD, 312 1, &pause_threshold); 313 } 314 msleep(1); 315 } 316 } 317 318 static int mcs7830_mdio_read(struct net_device *netdev, int phy_id, 319 int location) 320 { 321 struct usbnet *dev = netdev_priv(netdev); 322 return mcs7830_read_phy(dev, location); 323 } 324 325 static void mcs7830_mdio_write(struct net_device *netdev, int phy_id, 326 int location, int val) 327 { 328 struct usbnet *dev = netdev_priv(netdev); 329 mcs7830_write_phy(dev, location, val); 330 } 331 332 static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd) 333 { 334 struct usbnet *dev = netdev_priv(net); 335 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); 336 } 337 338 static inline struct mcs7830_data *mcs7830_get_data(struct usbnet *dev) 339 { 340 return (struct mcs7830_data *)&dev->data; 341 } 342 343 static void mcs7830_hif_update_multicast_hash(struct usbnet *dev) 344 { 345 struct mcs7830_data *data = mcs7830_get_data(dev); 346 mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH, 347 sizeof data->multi_filter, 348 data->multi_filter); 349 } 350 351 static void mcs7830_hif_update_config(struct usbnet *dev) 352 { 353 /* implementation specific to data->config 354 (argument needs to be heap-based anyway - USB DMA!) */ 355 struct mcs7830_data *data = mcs7830_get_data(dev); 356 mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config); 357 } 358 359 static void mcs7830_data_set_multicast(struct net_device *net) 360 { 361 struct usbnet *dev = netdev_priv(net); 362 struct mcs7830_data *data = mcs7830_get_data(dev); 363 364 memset(data->multi_filter, 0, sizeof data->multi_filter); 365 366 data->config = HIF_REG_CONFIG_TXENABLE; 367 368 /* this should not be needed, but it doesn't work otherwise */ 369 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 370 371 if (net->flags & IFF_PROMISC) { 372 data->config |= HIF_REG_CONFIG_PROMISCUOUS; 373 } else if (net->flags & IFF_ALLMULTI || 374 netdev_mc_count(net) > MCS7830_MAX_MCAST) { 375 data->config |= HIF_REG_CONFIG_ALLMULTICAST; 376 } else if (netdev_mc_empty(net)) { 377 /* just broadcast and directed */ 378 } else { 379 /* We use the 20 byte dev->data 380 * for our 8 byte filter buffer 381 * to avoid allocating memory that 382 * is tricky to free later */ 383 struct netdev_hw_addr *ha; 384 u32 crc_bits; 385 386 /* Build the multicast hash filter. */ 387 netdev_for_each_mc_addr(ha, net) { 388 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; 389 data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); 390 } 391 } 392 } 393 394 static int mcs7830_apply_base_config(struct usbnet *dev) 395 { 396 int ret; 397 398 /* re-configure known MAC (suspend case etc.) */ 399 ret = mcs7830_hif_set_mac_address(dev, dev->net->dev_addr); 400 if (ret) { 401 dev_info(&dev->udev->dev, "Cannot set MAC address\n"); 402 goto out; 403 } 404 405 /* Set up PHY */ 406 ret = mcs7830_set_autoneg(dev, 0); 407 if (ret) { 408 dev_info(&dev->udev->dev, "Cannot set autoneg\n"); 409 goto out; 410 } 411 412 mcs7830_hif_update_multicast_hash(dev); 413 mcs7830_hif_update_config(dev); 414 415 mcs7830_rev_C_fixup(dev); 416 ret = 0; 417 out: 418 return ret; 419 } 420 421 /* credits go to asix_set_multicast */ 422 static void mcs7830_set_multicast(struct net_device *net) 423 { 424 struct usbnet *dev = netdev_priv(net); 425 426 mcs7830_data_set_multicast(net); 427 428 mcs7830_hif_update_multicast_hash(dev); 429 mcs7830_hif_update_config(dev); 430 } 431 432 static int mcs7830_get_regs_len(struct net_device *net) 433 { 434 struct usbnet *dev = netdev_priv(net); 435 436 switch (mcs7830_get_rev(dev)) { 437 case 1: 438 return 21; 439 case 2: 440 return 32; 441 } 442 return 0; 443 } 444 445 static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo) 446 { 447 usbnet_get_drvinfo(net, drvinfo); 448 drvinfo->regdump_len = mcs7830_get_regs_len(net); 449 } 450 451 static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data) 452 { 453 struct usbnet *dev = netdev_priv(net); 454 455 regs->version = mcs7830_get_rev(dev); 456 mcs7830_get_reg(dev, 0, regs->len, data); 457 } 458 459 static const struct ethtool_ops mcs7830_ethtool_ops = { 460 .get_drvinfo = mcs7830_get_drvinfo, 461 .get_regs_len = mcs7830_get_regs_len, 462 .get_regs = mcs7830_get_regs, 463 464 /* common usbnet calls */ 465 .get_link = usbnet_get_link, 466 .get_msglevel = usbnet_get_msglevel, 467 .set_msglevel = usbnet_set_msglevel, 468 .get_settings = usbnet_get_settings, 469 .set_settings = usbnet_set_settings, 470 .nway_reset = usbnet_nway_reset, 471 }; 472 473 static const struct net_device_ops mcs7830_netdev_ops = { 474 .ndo_open = usbnet_open, 475 .ndo_stop = usbnet_stop, 476 .ndo_start_xmit = usbnet_start_xmit, 477 .ndo_tx_timeout = usbnet_tx_timeout, 478 .ndo_change_mtu = usbnet_change_mtu, 479 .ndo_validate_addr = eth_validate_addr, 480 .ndo_do_ioctl = mcs7830_ioctl, 481 .ndo_set_rx_mode = mcs7830_set_multicast, 482 .ndo_set_mac_address = mcs7830_set_mac_address, 483 }; 484 485 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev) 486 { 487 struct net_device *net = dev->net; 488 int ret; 489 int retry; 490 491 /* Initial startup: Gather MAC address setting from EEPROM */ 492 ret = -EINVAL; 493 for (retry = 0; retry < 5 && ret; retry++) 494 ret = mcs7830_hif_get_mac_address(dev, net->dev_addr); 495 if (ret) { 496 dev_warn(&dev->udev->dev, "Cannot read MAC address\n"); 497 goto out; 498 } 499 500 mcs7830_data_set_multicast(net); 501 502 ret = mcs7830_apply_base_config(dev); 503 if (ret) 504 goto out; 505 506 net->ethtool_ops = &mcs7830_ethtool_ops; 507 net->netdev_ops = &mcs7830_netdev_ops; 508 509 /* reserve space for the status byte on rx */ 510 dev->rx_urb_size = ETH_FRAME_LEN + 1; 511 512 dev->mii.mdio_read = mcs7830_mdio_read; 513 dev->mii.mdio_write = mcs7830_mdio_write; 514 dev->mii.dev = net; 515 dev->mii.phy_id_mask = 0x3f; 516 dev->mii.reg_num_mask = 0x1f; 517 dev->mii.phy_id = *((u8 *) net->dev_addr + 1); 518 519 ret = usbnet_get_endpoints(dev, udev); 520 out: 521 return ret; 522 } 523 524 /* The chip always appends a status byte that we need to strip */ 525 static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 526 { 527 u8 status; 528 529 /* This check is no longer done by usbnet */ 530 if (skb->len < dev->net->hard_header_len) { 531 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n"); 532 return 0; 533 } 534 535 skb_trim(skb, skb->len - 1); 536 status = skb->data[skb->len]; 537 538 if (status != MCS7830_RX_FRAME_CORRECT) { 539 dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status); 540 541 /* hmm, perhaps usbnet.c already sees a globally visible 542 frame error and increments rx_errors on its own already? */ 543 dev->net->stats.rx_errors++; 544 545 if (status & (MCS7830_RX_SHORT_FRAME 546 |MCS7830_RX_LENGTH_ERROR 547 |MCS7830_RX_LARGE_FRAME)) 548 dev->net->stats.rx_length_errors++; 549 if (status & MCS7830_RX_ALIGNMENT_ERROR) 550 dev->net->stats.rx_frame_errors++; 551 if (status & MCS7830_RX_CRC_ERROR) 552 dev->net->stats.rx_crc_errors++; 553 } 554 555 return skb->len > 0; 556 } 557 558 static void mcs7830_status(struct usbnet *dev, struct urb *urb) 559 { 560 u8 *buf = urb->transfer_buffer; 561 bool link, link_changed; 562 563 if (urb->actual_length < 16) 564 return; 565 566 link = !(buf[1] == 0x20); 567 link_changed = netif_carrier_ok(dev->net) != link; 568 if (link_changed) { 569 usbnet_link_change(dev, link, 0); 570 netdev_dbg(dev->net, "Link Status is: %d\n", link); 571 } 572 } 573 574 static const struct driver_info moschip_info = { 575 .description = "MOSCHIP 7830/7832/7730 usb-NET adapter", 576 .bind = mcs7830_bind, 577 .rx_fixup = mcs7830_rx_fixup, 578 .flags = FLAG_ETHER | FLAG_LINK_INTR, 579 .status = mcs7830_status, 580 .in = 1, 581 .out = 2, 582 }; 583 584 static const struct driver_info sitecom_info = { 585 .description = "Sitecom LN-30 usb-NET adapter", 586 .bind = mcs7830_bind, 587 .rx_fixup = mcs7830_rx_fixup, 588 .flags = FLAG_ETHER | FLAG_LINK_INTR, 589 .status = mcs7830_status, 590 .in = 1, 591 .out = 2, 592 }; 593 594 static const struct usb_device_id products[] = { 595 { 596 USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID), 597 .driver_info = (unsigned long) &moschip_info, 598 }, 599 { 600 USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID), 601 .driver_info = (unsigned long) &moschip_info, 602 }, 603 { 604 USB_DEVICE(MCS7830_VENDOR_ID, MCS7730_PRODUCT_ID), 605 .driver_info = (unsigned long) &moschip_info, 606 }, 607 { 608 USB_DEVICE(SITECOM_VENDOR_ID, LN_030_PRODUCT_ID), 609 .driver_info = (unsigned long) &sitecom_info, 610 }, 611 {}, 612 }; 613 MODULE_DEVICE_TABLE(usb, products); 614 615 static int mcs7830_reset_resume (struct usb_interface *intf) 616 { 617 /* YES, this function is successful enough that ethtool -d 618 does show same output pre-/post-suspend */ 619 620 struct usbnet *dev = usb_get_intfdata(intf); 621 622 mcs7830_apply_base_config(dev); 623 624 usbnet_resume(intf); 625 626 return 0; 627 } 628 629 static struct usb_driver mcs7830_driver = { 630 .name = driver_name, 631 .id_table = products, 632 .probe = usbnet_probe, 633 .disconnect = usbnet_disconnect, 634 .suspend = usbnet_suspend, 635 .resume = usbnet_resume, 636 .reset_resume = mcs7830_reset_resume, 637 .disable_hub_initiated_lpm = 1, 638 }; 639 640 module_usb_driver(mcs7830_driver); 641 642 MODULE_DESCRIPTION("USB to network adapter MCS7830)"); 643 MODULE_LICENSE("GPL"); 644