1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2012 Freescale Semiconductor, Inc. 4 * Copyright (C) 2012 Marek Vasut <marex@denx.de> 5 * on behalf of DENX Software Engineering GmbH 6 */ 7 8 #include <linux/module.h> 9 #include <linux/of_platform.h> 10 #include <linux/platform_device.h> 11 #include <linux/pm_runtime.h> 12 #include <linux/usb/chipidea.h> 13 #include <linux/usb/of.h> 14 #include <linux/clk.h> 15 #include <linux/pinctrl/consumer.h> 16 #include <linux/pm_qos.h> 17 18 #include "ci.h" 19 #include "ci_hdrc_imx.h" 20 21 struct ci_hdrc_imx_platform_flag { 22 unsigned int flags; 23 }; 24 25 static const struct ci_hdrc_imx_platform_flag imx23_usb_data = { 26 .flags = CI_HDRC_TURN_VBUS_EARLY_ON | 27 CI_HDRC_DISABLE_STREAMING, 28 }; 29 30 static const struct ci_hdrc_imx_platform_flag imx27_usb_data = { 31 .flags = CI_HDRC_DISABLE_STREAMING, 32 }; 33 34 static const struct ci_hdrc_imx_platform_flag imx28_usb_data = { 35 .flags = CI_HDRC_IMX28_WRITE_FIX | 36 CI_HDRC_TURN_VBUS_EARLY_ON | 37 CI_HDRC_DISABLE_STREAMING, 38 }; 39 40 static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = { 41 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 42 CI_HDRC_TURN_VBUS_EARLY_ON | 43 CI_HDRC_DISABLE_STREAMING, 44 }; 45 46 static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = { 47 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 48 CI_HDRC_TURN_VBUS_EARLY_ON | 49 CI_HDRC_DISABLE_HOST_STREAMING, 50 }; 51 52 static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = { 53 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 54 CI_HDRC_TURN_VBUS_EARLY_ON | 55 CI_HDRC_DISABLE_HOST_STREAMING, 56 }; 57 58 static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = { 59 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 60 CI_HDRC_TURN_VBUS_EARLY_ON | 61 CI_HDRC_DISABLE_DEVICE_STREAMING, 62 }; 63 64 static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = { 65 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM, 66 }; 67 68 static const struct ci_hdrc_imx_platform_flag imx7ulp_usb_data = { 69 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 70 CI_HDRC_PMQOS, 71 }; 72 73 static const struct of_device_id ci_hdrc_imx_dt_ids[] = { 74 { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data}, 75 { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data}, 76 { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data}, 77 { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data}, 78 { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data}, 79 { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data}, 80 { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data}, 81 { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data}, 82 { .compatible = "fsl,imx7ulp-usb", .data = &imx7ulp_usb_data}, 83 { /* sentinel */ } 84 }; 85 MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids); 86 87 struct ci_hdrc_imx_data { 88 struct usb_phy *phy; 89 struct platform_device *ci_pdev; 90 struct clk *clk; 91 struct imx_usbmisc_data *usbmisc_data; 92 bool supports_runtime_pm; 93 bool override_phy_control; 94 bool in_lpm; 95 struct pinctrl *pinctrl; 96 struct pinctrl_state *pinctrl_hsic_active; 97 struct regulator *hsic_pad_regulator; 98 /* SoC before i.mx6 (except imx23/imx28) needs three clks */ 99 bool need_three_clks; 100 struct clk *clk_ipg; 101 struct clk *clk_ahb; 102 struct clk *clk_per; 103 /* --------------------------------- */ 104 struct pm_qos_request pm_qos_req; 105 const struct ci_hdrc_imx_platform_flag *plat_data; 106 }; 107 108 /* Common functions shared by usbmisc drivers */ 109 110 static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) 111 { 112 struct platform_device *misc_pdev; 113 struct device_node *np = dev->of_node; 114 struct of_phandle_args args; 115 struct imx_usbmisc_data *data; 116 int ret; 117 118 /* 119 * In case the fsl,usbmisc property is not present this device doesn't 120 * need usbmisc. Return NULL (which is no error here) 121 */ 122 if (!of_get_property(np, "fsl,usbmisc", NULL)) 123 return NULL; 124 125 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 126 if (!data) 127 return ERR_PTR(-ENOMEM); 128 129 ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", 130 0, &args); 131 if (ret) { 132 dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", 133 ret); 134 return ERR_PTR(ret); 135 } 136 137 data->index = args.args[0]; 138 139 misc_pdev = of_find_device_by_node(args.np); 140 of_node_put(args.np); 141 142 if (!misc_pdev) 143 return ERR_PTR(-EPROBE_DEFER); 144 145 if (!platform_get_drvdata(misc_pdev)) { 146 put_device(&misc_pdev->dev); 147 return ERR_PTR(-EPROBE_DEFER); 148 } 149 data->dev = &misc_pdev->dev; 150 151 /* 152 * Check the various over current related properties. If over current 153 * detection is disabled we're not interested in the polarity. 154 */ 155 if (of_find_property(np, "disable-over-current", NULL)) { 156 data->disable_oc = 1; 157 } else if (of_find_property(np, "over-current-active-high", NULL)) { 158 data->oc_pol_active_low = 0; 159 data->oc_pol_configured = 1; 160 } else if (of_find_property(np, "over-current-active-low", NULL)) { 161 data->oc_pol_active_low = 1; 162 data->oc_pol_configured = 1; 163 } else { 164 dev_warn(dev, "No over current polarity defined\n"); 165 } 166 167 data->pwr_pol = of_property_read_bool(np, "power-active-high"); 168 data->evdo = of_property_read_bool(np, "external-vbus-divider"); 169 170 if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) 171 data->ulpi = 1; 172 173 of_property_read_u32(np, "samsung,picophy-pre-emp-curr-control", 174 &data->emp_curr_control); 175 of_property_read_u32(np, "samsung,picophy-dc-vol-level-adjust", 176 &data->dc_vol_level_adjust); 177 178 return data; 179 } 180 181 /* End of common functions shared by usbmisc drivers*/ 182 static int imx_get_clks(struct device *dev) 183 { 184 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 185 int ret = 0; 186 187 data->clk_ipg = devm_clk_get(dev, "ipg"); 188 if (IS_ERR(data->clk_ipg)) { 189 /* If the platform only needs one clocks */ 190 data->clk = devm_clk_get(dev, NULL); 191 if (IS_ERR(data->clk)) { 192 ret = PTR_ERR(data->clk); 193 dev_err(dev, 194 "Failed to get clks, err=%ld,%ld\n", 195 PTR_ERR(data->clk), PTR_ERR(data->clk_ipg)); 196 return ret; 197 } 198 return ret; 199 } 200 201 data->clk_ahb = devm_clk_get(dev, "ahb"); 202 if (IS_ERR(data->clk_ahb)) { 203 ret = PTR_ERR(data->clk_ahb); 204 dev_err(dev, 205 "Failed to get ahb clock, err=%d\n", ret); 206 return ret; 207 } 208 209 data->clk_per = devm_clk_get(dev, "per"); 210 if (IS_ERR(data->clk_per)) { 211 ret = PTR_ERR(data->clk_per); 212 dev_err(dev, 213 "Failed to get per clock, err=%d\n", ret); 214 return ret; 215 } 216 217 data->need_three_clks = true; 218 return ret; 219 } 220 221 static int imx_prepare_enable_clks(struct device *dev) 222 { 223 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 224 int ret = 0; 225 226 if (data->need_three_clks) { 227 ret = clk_prepare_enable(data->clk_ipg); 228 if (ret) { 229 dev_err(dev, 230 "Failed to prepare/enable ipg clk, err=%d\n", 231 ret); 232 return ret; 233 } 234 235 ret = clk_prepare_enable(data->clk_ahb); 236 if (ret) { 237 dev_err(dev, 238 "Failed to prepare/enable ahb clk, err=%d\n", 239 ret); 240 clk_disable_unprepare(data->clk_ipg); 241 return ret; 242 } 243 244 ret = clk_prepare_enable(data->clk_per); 245 if (ret) { 246 dev_err(dev, 247 "Failed to prepare/enable per clk, err=%d\n", 248 ret); 249 clk_disable_unprepare(data->clk_ahb); 250 clk_disable_unprepare(data->clk_ipg); 251 return ret; 252 } 253 } else { 254 ret = clk_prepare_enable(data->clk); 255 if (ret) { 256 dev_err(dev, 257 "Failed to prepare/enable clk, err=%d\n", 258 ret); 259 return ret; 260 } 261 } 262 263 return ret; 264 } 265 266 static void imx_disable_unprepare_clks(struct device *dev) 267 { 268 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 269 270 if (data->need_three_clks) { 271 clk_disable_unprepare(data->clk_per); 272 clk_disable_unprepare(data->clk_ahb); 273 clk_disable_unprepare(data->clk_ipg); 274 } else { 275 clk_disable_unprepare(data->clk); 276 } 277 } 278 279 static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event) 280 { 281 struct device *dev = ci->dev->parent; 282 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 283 int ret = 0; 284 struct imx_usbmisc_data *mdata = data->usbmisc_data; 285 286 switch (event) { 287 case CI_HDRC_IMX_HSIC_ACTIVE_EVENT: 288 if (data->pinctrl) { 289 ret = pinctrl_select_state(data->pinctrl, 290 data->pinctrl_hsic_active); 291 if (ret) 292 dev_err(dev, 293 "hsic_active select failed, err=%d\n", 294 ret); 295 } 296 break; 297 case CI_HDRC_IMX_HSIC_SUSPEND_EVENT: 298 ret = imx_usbmisc_hsic_set_connect(mdata); 299 if (ret) 300 dev_err(dev, 301 "hsic_set_connect failed, err=%d\n", ret); 302 break; 303 case CI_HDRC_CONTROLLER_VBUS_EVENT: 304 if (ci->vbus_active) 305 ret = imx_usbmisc_charger_detection(mdata, true); 306 else 307 ret = imx_usbmisc_charger_detection(mdata, false); 308 if (ci->usb_phy) 309 schedule_work(&ci->usb_phy->chg_work); 310 break; 311 default: 312 break; 313 } 314 315 return ret; 316 } 317 318 static int ci_hdrc_imx_probe(struct platform_device *pdev) 319 { 320 struct ci_hdrc_imx_data *data; 321 struct ci_hdrc_platform_data pdata = { 322 .name = dev_name(&pdev->dev), 323 .capoffset = DEF_CAPOFFSET, 324 .notify_event = ci_hdrc_imx_notify_event, 325 }; 326 int ret; 327 const struct ci_hdrc_imx_platform_flag *imx_platform_flag; 328 struct device_node *np = pdev->dev.of_node; 329 struct device *dev = &pdev->dev; 330 331 imx_platform_flag = of_device_get_match_data(&pdev->dev); 332 333 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 334 if (!data) 335 return -ENOMEM; 336 337 data->plat_data = imx_platform_flag; 338 pdata.flags |= imx_platform_flag->flags; 339 platform_set_drvdata(pdev, data); 340 data->usbmisc_data = usbmisc_get_init_data(dev); 341 if (IS_ERR(data->usbmisc_data)) 342 return PTR_ERR(data->usbmisc_data); 343 344 if ((of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) 345 && data->usbmisc_data) { 346 pdata.flags |= CI_HDRC_IMX_IS_HSIC; 347 data->usbmisc_data->hsic = 1; 348 data->pinctrl = devm_pinctrl_get(dev); 349 if (PTR_ERR(data->pinctrl) == -ENODEV) 350 data->pinctrl = NULL; 351 else if (IS_ERR(data->pinctrl)) 352 return dev_err_probe(dev, PTR_ERR(data->pinctrl), 353 "pinctrl get failed\n"); 354 355 data->hsic_pad_regulator = 356 devm_regulator_get_optional(dev, "hsic"); 357 if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) { 358 /* no pad regulator is needed */ 359 data->hsic_pad_regulator = NULL; 360 } else if (IS_ERR(data->hsic_pad_regulator)) 361 return dev_err_probe(dev, PTR_ERR(data->hsic_pad_regulator), 362 "Get HSIC pad regulator error\n"); 363 364 if (data->hsic_pad_regulator) { 365 ret = regulator_enable(data->hsic_pad_regulator); 366 if (ret) { 367 dev_err(dev, 368 "Failed to enable HSIC pad regulator\n"); 369 return ret; 370 } 371 } 372 } 373 374 /* HSIC pinctrl handling */ 375 if (data->pinctrl) { 376 struct pinctrl_state *pinctrl_hsic_idle; 377 378 pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle"); 379 if (IS_ERR(pinctrl_hsic_idle)) { 380 dev_err(dev, 381 "pinctrl_hsic_idle lookup failed, err=%ld\n", 382 PTR_ERR(pinctrl_hsic_idle)); 383 return PTR_ERR(pinctrl_hsic_idle); 384 } 385 386 ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle); 387 if (ret) { 388 dev_err(dev, "hsic_idle select failed, err=%d\n", ret); 389 return ret; 390 } 391 392 data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl, 393 "active"); 394 if (IS_ERR(data->pinctrl_hsic_active)) { 395 dev_err(dev, 396 "pinctrl_hsic_active lookup failed, err=%ld\n", 397 PTR_ERR(data->pinctrl_hsic_active)); 398 return PTR_ERR(data->pinctrl_hsic_active); 399 } 400 } 401 402 if (pdata.flags & CI_HDRC_PMQOS) 403 cpu_latency_qos_add_request(&data->pm_qos_req, 0); 404 405 ret = imx_get_clks(dev); 406 if (ret) 407 goto disable_hsic_regulator; 408 409 ret = imx_prepare_enable_clks(dev); 410 if (ret) 411 goto disable_hsic_regulator; 412 413 data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0); 414 if (IS_ERR(data->phy)) { 415 ret = PTR_ERR(data->phy); 416 if (ret != -ENODEV) 417 goto err_clk; 418 data->phy = devm_usb_get_phy_by_phandle(dev, "phys", 0); 419 if (IS_ERR(data->phy)) { 420 ret = PTR_ERR(data->phy); 421 if (ret == -ENODEV) 422 data->phy = NULL; 423 else 424 goto err_clk; 425 } 426 } 427 428 pdata.usb_phy = data->phy; 429 if (data->usbmisc_data) 430 data->usbmisc_data->usb_phy = data->phy; 431 432 if ((of_device_is_compatible(np, "fsl,imx53-usb") || 433 of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy && 434 of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) { 435 pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL; 436 data->override_phy_control = true; 437 usb_phy_init(pdata.usb_phy); 438 } 439 440 if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) 441 data->supports_runtime_pm = true; 442 443 ret = imx_usbmisc_init(data->usbmisc_data); 444 if (ret) { 445 dev_err(dev, "usbmisc init failed, ret=%d\n", ret); 446 goto err_clk; 447 } 448 449 data->ci_pdev = ci_hdrc_add_device(dev, 450 pdev->resource, pdev->num_resources, 451 &pdata); 452 if (IS_ERR(data->ci_pdev)) { 453 ret = PTR_ERR(data->ci_pdev); 454 dev_err_probe(dev, ret, "ci_hdrc_add_device failed\n"); 455 goto err_clk; 456 } 457 458 if (data->usbmisc_data) { 459 if (!IS_ERR(pdata.id_extcon.edev) || 460 of_property_read_bool(np, "usb-role-switch")) 461 data->usbmisc_data->ext_id = 1; 462 463 if (!IS_ERR(pdata.vbus_extcon.edev) || 464 of_property_read_bool(np, "usb-role-switch")) 465 data->usbmisc_data->ext_vbus = 1; 466 467 /* usbmisc needs to know dr mode to choose wakeup setting */ 468 data->usbmisc_data->available_role = 469 ci_hdrc_query_available_role(data->ci_pdev); 470 } 471 472 ret = imx_usbmisc_init_post(data->usbmisc_data); 473 if (ret) { 474 dev_err(dev, "usbmisc post failed, ret=%d\n", ret); 475 goto disable_device; 476 } 477 478 if (data->supports_runtime_pm) { 479 pm_runtime_set_active(dev); 480 pm_runtime_enable(dev); 481 } 482 483 device_set_wakeup_capable(dev, true); 484 485 return 0; 486 487 disable_device: 488 ci_hdrc_remove_device(data->ci_pdev); 489 err_clk: 490 imx_disable_unprepare_clks(dev); 491 disable_hsic_regulator: 492 if (data->hsic_pad_regulator) 493 /* don't overwrite original ret (cf. EPROBE_DEFER) */ 494 regulator_disable(data->hsic_pad_regulator); 495 if (pdata.flags & CI_HDRC_PMQOS) 496 cpu_latency_qos_remove_request(&data->pm_qos_req); 497 data->ci_pdev = NULL; 498 return ret; 499 } 500 501 static int ci_hdrc_imx_remove(struct platform_device *pdev) 502 { 503 struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); 504 505 if (data->supports_runtime_pm) { 506 pm_runtime_get_sync(&pdev->dev); 507 pm_runtime_disable(&pdev->dev); 508 pm_runtime_put_noidle(&pdev->dev); 509 } 510 if (data->ci_pdev) 511 ci_hdrc_remove_device(data->ci_pdev); 512 if (data->override_phy_control) 513 usb_phy_shutdown(data->phy); 514 if (data->ci_pdev) { 515 imx_disable_unprepare_clks(&pdev->dev); 516 if (data->plat_data->flags & CI_HDRC_PMQOS) 517 cpu_latency_qos_remove_request(&data->pm_qos_req); 518 if (data->hsic_pad_regulator) 519 regulator_disable(data->hsic_pad_regulator); 520 } 521 522 return 0; 523 } 524 525 static void ci_hdrc_imx_shutdown(struct platform_device *pdev) 526 { 527 ci_hdrc_imx_remove(pdev); 528 } 529 530 static int __maybe_unused imx_controller_suspend(struct device *dev, 531 pm_message_t msg) 532 { 533 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 534 int ret = 0; 535 536 dev_dbg(dev, "at %s\n", __func__); 537 538 ret = imx_usbmisc_suspend(data->usbmisc_data, 539 PMSG_IS_AUTO(msg) || device_may_wakeup(dev)); 540 if (ret) { 541 dev_err(dev, 542 "usbmisc suspend failed, ret=%d\n", ret); 543 return ret; 544 } 545 546 imx_disable_unprepare_clks(dev); 547 if (data->plat_data->flags & CI_HDRC_PMQOS) 548 cpu_latency_qos_remove_request(&data->pm_qos_req); 549 550 data->in_lpm = true; 551 552 return 0; 553 } 554 555 static int __maybe_unused imx_controller_resume(struct device *dev, 556 pm_message_t msg) 557 { 558 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 559 int ret = 0; 560 561 dev_dbg(dev, "at %s\n", __func__); 562 563 if (!data->in_lpm) { 564 WARN_ON(1); 565 return 0; 566 } 567 568 if (data->plat_data->flags & CI_HDRC_PMQOS) 569 cpu_latency_qos_add_request(&data->pm_qos_req, 0); 570 571 ret = imx_prepare_enable_clks(dev); 572 if (ret) 573 return ret; 574 575 data->in_lpm = false; 576 577 ret = imx_usbmisc_resume(data->usbmisc_data, 578 PMSG_IS_AUTO(msg) || device_may_wakeup(dev)); 579 if (ret) { 580 dev_err(dev, "usbmisc resume failed, ret=%d\n", ret); 581 goto clk_disable; 582 } 583 584 return 0; 585 586 clk_disable: 587 imx_disable_unprepare_clks(dev); 588 return ret; 589 } 590 591 static int __maybe_unused ci_hdrc_imx_suspend(struct device *dev) 592 { 593 int ret; 594 595 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 596 597 if (data->in_lpm) 598 /* The core's suspend doesn't run */ 599 return 0; 600 601 ret = imx_controller_suspend(dev, PMSG_SUSPEND); 602 if (ret) 603 return ret; 604 605 pinctrl_pm_select_sleep_state(dev); 606 return ret; 607 } 608 609 static int __maybe_unused ci_hdrc_imx_resume(struct device *dev) 610 { 611 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 612 int ret; 613 614 pinctrl_pm_select_default_state(dev); 615 ret = imx_controller_resume(dev, PMSG_RESUME); 616 if (!ret && data->supports_runtime_pm) { 617 pm_runtime_disable(dev); 618 pm_runtime_set_active(dev); 619 pm_runtime_enable(dev); 620 } 621 622 return ret; 623 } 624 625 static int __maybe_unused ci_hdrc_imx_runtime_suspend(struct device *dev) 626 { 627 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 628 629 if (data->in_lpm) { 630 WARN_ON(1); 631 return 0; 632 } 633 634 return imx_controller_suspend(dev, PMSG_AUTO_SUSPEND); 635 } 636 637 static int __maybe_unused ci_hdrc_imx_runtime_resume(struct device *dev) 638 { 639 return imx_controller_resume(dev, PMSG_AUTO_RESUME); 640 } 641 642 static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { 643 SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) 644 SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, 645 ci_hdrc_imx_runtime_resume, NULL) 646 }; 647 static struct platform_driver ci_hdrc_imx_driver = { 648 .probe = ci_hdrc_imx_probe, 649 .remove = ci_hdrc_imx_remove, 650 .shutdown = ci_hdrc_imx_shutdown, 651 .driver = { 652 .name = "imx_usb", 653 .of_match_table = ci_hdrc_imx_dt_ids, 654 .pm = &ci_hdrc_imx_pm_ops, 655 }, 656 }; 657 658 module_platform_driver(ci_hdrc_imx_driver); 659 660 MODULE_ALIAS("platform:imx-usb"); 661 MODULE_LICENSE("GPL"); 662 MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); 663 MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); 664 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); 665