1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Driver for onboard USB devices 4 * 5 * Copyright (c) 2022, Google LLC 6 */ 7 8 #include <linux/clk.h> 9 #include <linux/device.h> 10 #include <linux/export.h> 11 #include <linux/err.h> 12 #include <linux/gpio/consumer.h> 13 #include <linux/init.h> 14 #include <linux/i2c.h> 15 #include <linux/kernel.h> 16 #include <linux/list.h> 17 #include <linux/module.h> 18 #include <linux/mutex.h> 19 #include <linux/of.h> 20 #include <linux/of_platform.h> 21 #include <linux/platform_device.h> 22 #include <linux/regulator/consumer.h> 23 #include <linux/slab.h> 24 #include <linux/suspend.h> 25 #include <linux/sysfs.h> 26 #include <linux/usb.h> 27 #include <linux/usb/hcd.h> 28 #include <linux/usb/onboard_dev.h> 29 #include <linux/workqueue.h> 30 31 #include "onboard_usb_dev.h" 32 33 /* USB5744 register offset and mask */ 34 #define USB5744_CMD_ATTACH 0xAA 35 #define USB5744_CMD_ATTACH_LSB 0x56 36 #define USB5744_CMD_CREG_ACCESS 0x99 37 #define USB5744_CMD_CREG_ACCESS_LSB 0x37 38 #define USB5744_CREG_MEM_ADDR 0x00 39 #define USB5744_CREG_MEM_RD_ADDR 0x04 40 #define USB5744_CREG_WRITE 0x00 41 #define USB5744_CREG_READ 0x01 42 #define USB5744_CREG_RUNTIMEFLAGS2 0x411D 43 #define USB5744_CREG_BYPASS_UDC_SUSPEND BIT(3) 44 45 static void onboard_dev_attach_usb_driver(struct work_struct *work); 46 47 static struct usb_device_driver onboard_dev_usbdev_driver; 48 static DECLARE_WORK(attach_usb_driver_work, onboard_dev_attach_usb_driver); 49 50 /************************** Platform driver **************************/ 51 52 struct usbdev_node { 53 struct usb_device *udev; 54 struct list_head list; 55 }; 56 57 struct onboard_dev { 58 struct regulator_bulk_data supplies[MAX_SUPPLIES]; 59 struct device *dev; 60 const struct onboard_dev_pdata *pdata; 61 struct gpio_desc *reset_gpio; 62 bool always_powered_in_suspend; 63 bool is_powered_on; 64 bool going_away; 65 struct list_head udev_list; 66 struct mutex lock; 67 struct clk *clk; 68 }; 69 70 static int onboard_dev_get_regulators(struct onboard_dev *onboard_dev) 71 { 72 const char * const *supply_names = onboard_dev->pdata->supply_names; 73 unsigned int num_supplies = onboard_dev->pdata->num_supplies; 74 struct device *dev = onboard_dev->dev; 75 unsigned int i; 76 int err; 77 78 if (num_supplies > MAX_SUPPLIES) 79 return dev_err_probe(dev, -EINVAL, "max %d supplies supported!\n", 80 MAX_SUPPLIES); 81 82 for (i = 0; i < num_supplies; i++) 83 onboard_dev->supplies[i].supply = supply_names[i]; 84 85 err = devm_regulator_bulk_get(dev, num_supplies, onboard_dev->supplies); 86 if (err) 87 dev_err(dev, "Failed to get regulator supplies: %pe\n", 88 ERR_PTR(err)); 89 90 return err; 91 } 92 93 static int onboard_dev_power_on(struct onboard_dev *onboard_dev) 94 { 95 int err; 96 97 err = clk_prepare_enable(onboard_dev->clk); 98 if (err) { 99 dev_err(onboard_dev->dev, "failed to enable clock: %pe\n", 100 ERR_PTR(err)); 101 return err; 102 } 103 104 err = regulator_bulk_enable(onboard_dev->pdata->num_supplies, 105 onboard_dev->supplies); 106 if (err) { 107 dev_err(onboard_dev->dev, "failed to enable supplies: %pe\n", 108 ERR_PTR(err)); 109 goto disable_clk; 110 } 111 112 fsleep(onboard_dev->pdata->reset_us); 113 gpiod_set_value_cansleep(onboard_dev->reset_gpio, 0); 114 fsleep(onboard_dev->pdata->power_on_delay_us); 115 116 onboard_dev->is_powered_on = true; 117 118 return 0; 119 120 disable_clk: 121 clk_disable_unprepare(onboard_dev->clk); 122 return err; 123 } 124 125 static int onboard_dev_power_off(struct onboard_dev *onboard_dev) 126 { 127 int err; 128 129 gpiod_set_value_cansleep(onboard_dev->reset_gpio, 1); 130 131 err = regulator_bulk_disable(onboard_dev->pdata->num_supplies, 132 onboard_dev->supplies); 133 if (err) { 134 dev_err(onboard_dev->dev, "failed to disable supplies: %pe\n", 135 ERR_PTR(err)); 136 return err; 137 } 138 139 clk_disable_unprepare(onboard_dev->clk); 140 141 onboard_dev->is_powered_on = false; 142 143 return 0; 144 } 145 146 static int __maybe_unused onboard_dev_suspend(struct device *dev) 147 { 148 struct onboard_dev *onboard_dev = dev_get_drvdata(dev); 149 struct usbdev_node *node; 150 bool power_off = true; 151 152 if (onboard_dev->always_powered_in_suspend) 153 return 0; 154 155 mutex_lock(&onboard_dev->lock); 156 157 list_for_each_entry(node, &onboard_dev->udev_list, list) { 158 if (!device_may_wakeup(node->udev->bus->controller)) 159 continue; 160 161 if (usb_wakeup_enabled_descendants(node->udev)) { 162 power_off = false; 163 break; 164 } 165 } 166 167 mutex_unlock(&onboard_dev->lock); 168 169 if (!power_off) 170 return 0; 171 172 return onboard_dev_power_off(onboard_dev); 173 } 174 175 static int __maybe_unused onboard_dev_resume(struct device *dev) 176 { 177 struct onboard_dev *onboard_dev = dev_get_drvdata(dev); 178 179 if (onboard_dev->is_powered_on) 180 return 0; 181 182 return onboard_dev_power_on(onboard_dev); 183 } 184 185 static inline void get_udev_link_name(const struct usb_device *udev, char *buf, 186 size_t size) 187 { 188 snprintf(buf, size, "usb_dev.%s", dev_name(&udev->dev)); 189 } 190 191 static int onboard_dev_add_usbdev(struct onboard_dev *onboard_dev, 192 struct usb_device *udev) 193 { 194 struct usbdev_node *node; 195 char link_name[64]; 196 int err; 197 198 mutex_lock(&onboard_dev->lock); 199 200 if (onboard_dev->going_away) { 201 err = -EINVAL; 202 goto error; 203 } 204 205 node = kzalloc(sizeof(*node), GFP_KERNEL); 206 if (!node) { 207 err = -ENOMEM; 208 goto error; 209 } 210 211 node->udev = udev; 212 213 list_add(&node->list, &onboard_dev->udev_list); 214 215 mutex_unlock(&onboard_dev->lock); 216 217 get_udev_link_name(udev, link_name, sizeof(link_name)); 218 WARN_ON(sysfs_create_link(&onboard_dev->dev->kobj, &udev->dev.kobj, 219 link_name)); 220 221 return 0; 222 223 error: 224 mutex_unlock(&onboard_dev->lock); 225 226 return err; 227 } 228 229 static void onboard_dev_remove_usbdev(struct onboard_dev *onboard_dev, 230 const struct usb_device *udev) 231 { 232 struct usbdev_node *node; 233 char link_name[64]; 234 235 get_udev_link_name(udev, link_name, sizeof(link_name)); 236 sysfs_remove_link(&onboard_dev->dev->kobj, link_name); 237 238 mutex_lock(&onboard_dev->lock); 239 240 list_for_each_entry(node, &onboard_dev->udev_list, list) { 241 if (node->udev == udev) { 242 list_del(&node->list); 243 kfree(node); 244 break; 245 } 246 } 247 248 mutex_unlock(&onboard_dev->lock); 249 } 250 251 static ssize_t always_powered_in_suspend_show(struct device *dev, 252 struct device_attribute *attr, 253 char *buf) 254 { 255 const struct onboard_dev *onboard_dev = dev_get_drvdata(dev); 256 257 return sysfs_emit(buf, "%d\n", onboard_dev->always_powered_in_suspend); 258 } 259 260 static ssize_t always_powered_in_suspend_store(struct device *dev, 261 struct device_attribute *attr, 262 const char *buf, size_t count) 263 { 264 struct onboard_dev *onboard_dev = dev_get_drvdata(dev); 265 bool val; 266 int ret; 267 268 ret = kstrtobool(buf, &val); 269 if (ret < 0) 270 return ret; 271 272 onboard_dev->always_powered_in_suspend = val; 273 274 return count; 275 } 276 static DEVICE_ATTR_RW(always_powered_in_suspend); 277 278 static struct attribute *onboard_dev_attrs[] = { 279 &dev_attr_always_powered_in_suspend.attr, 280 NULL, 281 }; 282 283 static umode_t onboard_dev_attrs_are_visible(struct kobject *kobj, 284 struct attribute *attr, 285 int n) 286 { 287 struct device *dev = kobj_to_dev(kobj); 288 struct onboard_dev *onboard_dev = dev_get_drvdata(dev); 289 290 if (attr == &dev_attr_always_powered_in_suspend.attr && 291 !onboard_dev->pdata->is_hub) 292 return 0; 293 294 return attr->mode; 295 } 296 297 static const struct attribute_group onboard_dev_group = { 298 .is_visible = onboard_dev_attrs_are_visible, 299 .attrs = onboard_dev_attrs, 300 }; 301 __ATTRIBUTE_GROUPS(onboard_dev); 302 303 304 static void onboard_dev_attach_usb_driver(struct work_struct *work) 305 { 306 int err; 307 308 err = driver_attach(&onboard_dev_usbdev_driver.driver); 309 if (err) 310 pr_err("Failed to attach USB driver: %pe\n", ERR_PTR(err)); 311 } 312 313 #if IS_ENABLED(CONFIG_USB_ONBOARD_DEV_USB5744) 314 static int onboard_dev_5744_i2c_read_byte(struct i2c_client *client, u16 addr, u8 *data) 315 { 316 struct i2c_msg msg[2]; 317 u8 rd_buf[3]; 318 int ret; 319 320 u8 wr_buf[7] = {0, USB5744_CREG_MEM_ADDR, 4, 321 USB5744_CREG_READ, 1, 322 addr >> 8 & 0xff, 323 addr & 0xff}; 324 msg[0].addr = client->addr; 325 msg[0].flags = 0; 326 msg[0].len = sizeof(wr_buf); 327 msg[0].buf = wr_buf; 328 329 ret = i2c_transfer(client->adapter, msg, 1); 330 if (ret < 0) 331 return ret; 332 333 wr_buf[0] = USB5744_CMD_CREG_ACCESS; 334 wr_buf[1] = USB5744_CMD_CREG_ACCESS_LSB; 335 wr_buf[2] = 0; 336 msg[0].len = 3; 337 338 ret = i2c_transfer(client->adapter, msg, 1); 339 if (ret < 0) 340 return ret; 341 342 wr_buf[0] = 0; 343 wr_buf[1] = USB5744_CREG_MEM_RD_ADDR; 344 msg[0].len = 2; 345 346 msg[1].addr = client->addr; 347 msg[1].flags = I2C_M_RD; 348 msg[1].len = 2; 349 msg[1].buf = rd_buf; 350 351 ret = i2c_transfer(client->adapter, msg, 2); 352 if (ret < 0) 353 return ret; 354 *data = rd_buf[1]; 355 356 return 0; 357 } 358 359 static int onboard_dev_5744_i2c_write_byte(struct i2c_client *client, u16 addr, u8 data) 360 { 361 struct i2c_msg msg[2]; 362 int ret; 363 364 u8 wr_buf[8] = {0, USB5744_CREG_MEM_ADDR, 5, 365 USB5744_CREG_WRITE, 1, 366 addr >> 8 & 0xff, 367 addr & 0xff, 368 data}; 369 msg[0].addr = client->addr; 370 msg[0].flags = 0; 371 msg[0].len = sizeof(wr_buf); 372 msg[0].buf = wr_buf; 373 374 ret = i2c_transfer(client->adapter, msg, 1); 375 if (ret < 0) 376 return ret; 377 378 msg[0].len = 3; 379 wr_buf[0] = USB5744_CMD_CREG_ACCESS; 380 wr_buf[1] = USB5744_CMD_CREG_ACCESS_LSB; 381 wr_buf[2] = 0; 382 383 ret = i2c_transfer(client->adapter, msg, 1); 384 if (ret < 0) 385 return ret; 386 387 return 0; 388 } 389 390 static int onboard_dev_5744_i2c_init(struct i2c_client *client) 391 { 392 struct device *dev = &client->dev; 393 int ret; 394 u8 reg; 395 396 /* 397 * Set BYPASS_UDC_SUSPEND bit to ensure MCU is always enabled 398 * and ready to respond to SMBus runtime commands. 399 * The command writes 5 bytes to memory and single data byte in 400 * configuration register. 401 */ 402 ret = onboard_dev_5744_i2c_read_byte(client, 403 USB5744_CREG_RUNTIMEFLAGS2, ®); 404 if (ret) 405 return dev_err_probe(dev, ret, "CREG_RUNTIMEFLAGS2 read failed\n"); 406 407 reg |= USB5744_CREG_BYPASS_UDC_SUSPEND; 408 ret = onboard_dev_5744_i2c_write_byte(client, 409 USB5744_CREG_RUNTIMEFLAGS2, reg); 410 if (ret) 411 return dev_err_probe(dev, ret, "BYPASS_UDC_SUSPEND bit configuration failed\n"); 412 413 /* Send SMBus command to boot hub. */ 414 ret = i2c_smbus_write_word_data(client, USB5744_CMD_ATTACH, 415 USB5744_CMD_ATTACH_LSB); 416 if (ret < 0) 417 return dev_err_probe(dev, ret, "USB Attach with SMBus command failed\n"); 418 419 return ret; 420 } 421 #else 422 static int onboard_dev_5744_i2c_init(struct i2c_client *client) 423 { 424 return -ENODEV; 425 } 426 #endif 427 428 static int onboard_dev_probe(struct platform_device *pdev) 429 { 430 struct device *dev = &pdev->dev; 431 struct onboard_dev *onboard_dev; 432 struct device_node *i2c_node; 433 int err; 434 435 onboard_dev = devm_kzalloc(dev, sizeof(*onboard_dev), GFP_KERNEL); 436 if (!onboard_dev) 437 return -ENOMEM; 438 439 onboard_dev->pdata = device_get_match_data(dev); 440 if (!onboard_dev->pdata) 441 return -EINVAL; 442 443 if (!onboard_dev->pdata->is_hub) 444 onboard_dev->always_powered_in_suspend = true; 445 446 onboard_dev->dev = dev; 447 448 err = onboard_dev_get_regulators(onboard_dev); 449 if (err) 450 return err; 451 452 onboard_dev->clk = devm_clk_get_optional(dev, NULL); 453 if (IS_ERR(onboard_dev->clk)) 454 return dev_err_probe(dev, PTR_ERR(onboard_dev->clk), 455 "failed to get clock\n"); 456 457 onboard_dev->reset_gpio = devm_gpiod_get_optional(dev, "reset", 458 GPIOD_OUT_HIGH); 459 if (IS_ERR(onboard_dev->reset_gpio)) 460 return dev_err_probe(dev, PTR_ERR(onboard_dev->reset_gpio), 461 "failed to get reset GPIO\n"); 462 463 mutex_init(&onboard_dev->lock); 464 INIT_LIST_HEAD(&onboard_dev->udev_list); 465 466 dev_set_drvdata(dev, onboard_dev); 467 468 err = onboard_dev_power_on(onboard_dev); 469 if (err) 470 return err; 471 472 i2c_node = of_parse_phandle(pdev->dev.of_node, "i2c-bus", 0); 473 if (i2c_node) { 474 struct i2c_client *client = NULL; 475 476 #if IS_ENABLED(CONFIG_USB_ONBOARD_DEV_USB5744) 477 client = of_find_i2c_device_by_node(i2c_node); 478 #endif 479 of_node_put(i2c_node); 480 481 if (!client) { 482 err = -EPROBE_DEFER; 483 goto err_power_off; 484 } 485 486 if (of_device_is_compatible(pdev->dev.of_node, "usb424,2744") || 487 of_device_is_compatible(pdev->dev.of_node, "usb424,5744")) { 488 err = onboard_dev_5744_i2c_init(client); 489 onboard_dev->always_powered_in_suspend = true; 490 } 491 492 put_device(&client->dev); 493 if (err < 0) 494 goto err_power_off; 495 } 496 497 /* 498 * The USB driver might have been detached from the USB devices by 499 * onboard_dev_remove() (e.g. through an 'unbind' by userspace), 500 * make sure to re-attach it if needed. 501 * 502 * This needs to be done deferred to avoid self-deadlocks on systems 503 * with nested onboard hubs. 504 */ 505 schedule_work(&attach_usb_driver_work); 506 507 return 0; 508 509 err_power_off: 510 onboard_dev_power_off(onboard_dev); 511 return err; 512 } 513 514 static void onboard_dev_remove(struct platform_device *pdev) 515 { 516 struct onboard_dev *onboard_dev = dev_get_drvdata(&pdev->dev); 517 struct usbdev_node *node; 518 struct usb_device *udev; 519 520 onboard_dev->going_away = true; 521 522 mutex_lock(&onboard_dev->lock); 523 524 /* unbind the USB devices to avoid dangling references to this device */ 525 while (!list_empty(&onboard_dev->udev_list)) { 526 node = list_first_entry(&onboard_dev->udev_list, 527 struct usbdev_node, list); 528 udev = node->udev; 529 530 /* 531 * Unbinding the driver will call onboard_dev_remove_usbdev(), 532 * which acquires onboard_dev->lock. We must release the lock 533 * first. 534 */ 535 get_device(&udev->dev); 536 mutex_unlock(&onboard_dev->lock); 537 device_release_driver(&udev->dev); 538 put_device(&udev->dev); 539 mutex_lock(&onboard_dev->lock); 540 } 541 542 mutex_unlock(&onboard_dev->lock); 543 544 onboard_dev_power_off(onboard_dev); 545 } 546 547 MODULE_DEVICE_TABLE(of, onboard_dev_match); 548 549 static const struct dev_pm_ops __maybe_unused onboard_dev_pm_ops = { 550 SET_LATE_SYSTEM_SLEEP_PM_OPS(onboard_dev_suspend, onboard_dev_resume) 551 }; 552 553 static struct platform_driver onboard_dev_driver = { 554 .probe = onboard_dev_probe, 555 .remove = onboard_dev_remove, 556 557 .driver = { 558 .name = "onboard-usb-dev", 559 .of_match_table = onboard_dev_match, 560 .pm = pm_ptr(&onboard_dev_pm_ops), 561 .dev_groups = onboard_dev_groups, 562 }, 563 }; 564 565 /************************** USB driver **************************/ 566 567 #define VENDOR_ID_CYPRESS 0x04b4 568 #define VENDOR_ID_GENESYS 0x05e3 569 #define VENDOR_ID_MICROCHIP 0x0424 570 #define VENDOR_ID_PARADE 0x1da0 571 #define VENDOR_ID_REALTEK 0x0bda 572 #define VENDOR_ID_TI 0x0451 573 #define VENDOR_ID_VIA 0x2109 574 #define VENDOR_ID_XMOS 0x20B1 575 576 /* 577 * Returns the onboard_dev platform device that is associated with the USB 578 * device passed as parameter. 579 */ 580 static struct onboard_dev *_find_onboard_dev(struct device *dev) 581 { 582 struct platform_device *pdev; 583 struct device_node *np; 584 struct onboard_dev *onboard_dev; 585 586 pdev = of_find_device_by_node(dev->of_node); 587 if (!pdev) { 588 np = of_parse_phandle(dev->of_node, "peer-hub", 0); 589 if (!np) { 590 dev_err(dev, "failed to find device node for peer hub\n"); 591 return ERR_PTR(-EINVAL); 592 } 593 594 pdev = of_find_device_by_node(np); 595 of_node_put(np); 596 597 if (!pdev) 598 return ERR_PTR(-ENODEV); 599 } 600 601 onboard_dev = dev_get_drvdata(&pdev->dev); 602 put_device(&pdev->dev); 603 604 /* 605 * The presence of drvdata indicates that the platform driver finished 606 * probing. This handles the case where (conceivably) we could be 607 * running at the exact same time as the platform driver's probe. If 608 * we detect the race we request probe deferral and we'll come back and 609 * try again. 610 */ 611 if (!onboard_dev) 612 return ERR_PTR(-EPROBE_DEFER); 613 614 return onboard_dev; 615 } 616 617 static bool onboard_dev_usbdev_match(struct usb_device *udev) 618 { 619 /* Onboard devices using this driver must have a device tree node */ 620 return !!udev->dev.of_node; 621 } 622 623 static int onboard_dev_usbdev_probe(struct usb_device *udev) 624 { 625 struct device *dev = &udev->dev; 626 struct onboard_dev *onboard_dev; 627 int err; 628 629 onboard_dev = _find_onboard_dev(dev); 630 if (IS_ERR(onboard_dev)) 631 return PTR_ERR(onboard_dev); 632 633 dev_set_drvdata(dev, onboard_dev); 634 635 err = onboard_dev_add_usbdev(onboard_dev, udev); 636 if (err) 637 return err; 638 639 return 0; 640 } 641 642 static void onboard_dev_usbdev_disconnect(struct usb_device *udev) 643 { 644 struct onboard_dev *onboard_dev = dev_get_drvdata(&udev->dev); 645 646 onboard_dev_remove_usbdev(onboard_dev, udev); 647 } 648 649 static const struct usb_device_id onboard_dev_id_table[] = { 650 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6500) }, /* CYUSB330x 3.0 HUB */ 651 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6502) }, /* CYUSB330x 2.0 HUB */ 652 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6503) }, /* CYUSB33{0,1}x 2.0 HUB, Vendor Mode */ 653 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6504) }, /* CYUSB331x 3.0 HUB */ 654 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6506) }, /* CYUSB331x 2.0 HUB */ 655 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6507) }, /* CYUSB332x 2.0 HUB, Vendor Mode */ 656 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6508) }, /* CYUSB332x 3.0 HUB */ 657 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x650a) }, /* CYUSB332x 2.0 HUB */ 658 { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6570) }, /* CY7C6563x 2.0 HUB */ 659 { USB_DEVICE(VENDOR_ID_GENESYS, 0x0608) }, /* Genesys Logic GL850G USB 2.0 HUB */ 660 { USB_DEVICE(VENDOR_ID_GENESYS, 0x0610) }, /* Genesys Logic GL852G USB 2.0 HUB */ 661 { USB_DEVICE(VENDOR_ID_GENESYS, 0x0620) }, /* Genesys Logic GL3523 USB 3.1 HUB */ 662 { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2412) }, /* USB2412 USB 2.0 HUB */ 663 { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2514) }, /* USB2514B USB 2.0 HUB */ 664 { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2517) }, /* USB2517 USB 2.0 HUB */ 665 { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2744) }, /* USB5744 USB 2.0 HUB */ 666 { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x5744) }, /* USB5744 USB 3.0 HUB */ 667 { USB_DEVICE(VENDOR_ID_PARADE, 0x5511) }, /* PS5511 USB 3.2 */ 668 { USB_DEVICE(VENDOR_ID_PARADE, 0x55a1) }, /* PS5511 USB 2.0 */ 669 { USB_DEVICE(VENDOR_ID_REALTEK, 0x0411) }, /* RTS5411 USB 3.1 HUB */ 670 { USB_DEVICE(VENDOR_ID_REALTEK, 0x5411) }, /* RTS5411 USB 2.1 HUB */ 671 { USB_DEVICE(VENDOR_ID_REALTEK, 0x0414) }, /* RTS5414 USB 3.2 HUB */ 672 { USB_DEVICE(VENDOR_ID_REALTEK, 0x5414) }, /* RTS5414 USB 2.1 HUB */ 673 { USB_DEVICE(VENDOR_ID_REALTEK, 0x0179) }, /* RTL8188ETV 2.4GHz WiFi */ 674 { USB_DEVICE(VENDOR_ID_TI, 0x8025) }, /* TI USB8020B 3.0 HUB */ 675 { USB_DEVICE(VENDOR_ID_TI, 0x8027) }, /* TI USB8020B 2.0 HUB */ 676 { USB_DEVICE(VENDOR_ID_TI, 0x8140) }, /* TI USB8041 3.0 HUB */ 677 { USB_DEVICE(VENDOR_ID_TI, 0x8142) }, /* TI USB8041 2.0 HUB */ 678 { USB_DEVICE(VENDOR_ID_TI, 0x8440) }, /* TI USB8044 3.0 HUB */ 679 { USB_DEVICE(VENDOR_ID_TI, 0x8442) }, /* TI USB8044 2.0 HUB */ 680 { USB_DEVICE(VENDOR_ID_VIA, 0x0817) }, /* VIA VL817 3.1 HUB */ 681 { USB_DEVICE(VENDOR_ID_VIA, 0x2817) }, /* VIA VL817 2.0 HUB */ 682 { USB_DEVICE(VENDOR_ID_XMOS, 0x0013) }, /* XMOS XVF3500 Voice Processor */ 683 {} 684 }; 685 MODULE_DEVICE_TABLE(usb, onboard_dev_id_table); 686 687 static struct usb_device_driver onboard_dev_usbdev_driver = { 688 .name = "onboard-usb-dev", 689 .match = onboard_dev_usbdev_match, 690 .probe = onboard_dev_usbdev_probe, 691 .disconnect = onboard_dev_usbdev_disconnect, 692 .generic_subclass = 1, 693 .supports_autosuspend = 1, 694 .id_table = onboard_dev_id_table, 695 }; 696 697 static int __init onboard_dev_init(void) 698 { 699 int ret; 700 701 ret = usb_register_device_driver(&onboard_dev_usbdev_driver, THIS_MODULE); 702 if (ret) 703 return ret; 704 705 ret = platform_driver_register(&onboard_dev_driver); 706 if (ret) 707 usb_deregister_device_driver(&onboard_dev_usbdev_driver); 708 709 return ret; 710 } 711 module_init(onboard_dev_init); 712 713 static void __exit onboard_dev_exit(void) 714 { 715 usb_deregister_device_driver(&onboard_dev_usbdev_driver); 716 platform_driver_unregister(&onboard_dev_driver); 717 718 cancel_work_sync(&attach_usb_driver_work); 719 } 720 module_exit(onboard_dev_exit); 721 722 MODULE_AUTHOR("Matthias Kaehlcke <mka@chromium.org>"); 723 MODULE_DESCRIPTION("Driver for discrete onboard USB devices"); 724 MODULE_LICENSE("GPL v2"); 725