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 || !platform_get_drvdata(misc_pdev)) 143 return ERR_PTR(-EPROBE_DEFER); 144 145 data->dev = &misc_pdev->dev; 146 147 /* 148 * Check the various over current related properties. If over current 149 * detection is disabled we're not interested in the polarity. 150 */ 151 if (of_find_property(np, "disable-over-current", NULL)) { 152 data->disable_oc = 1; 153 } else if (of_find_property(np, "over-current-active-high", NULL)) { 154 data->oc_pol_active_low = 0; 155 data->oc_pol_configured = 1; 156 } else if (of_find_property(np, "over-current-active-low", NULL)) { 157 data->oc_pol_active_low = 1; 158 data->oc_pol_configured = 1; 159 } else { 160 dev_warn(dev, "No over current polarity defined\n"); 161 } 162 163 data->pwr_pol = of_property_read_bool(np, "power-active-high"); 164 data->evdo = of_property_read_bool(np, "external-vbus-divider"); 165 166 if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) 167 data->ulpi = 1; 168 169 of_property_read_u32(np, "samsung,picophy-pre-emp-curr-control", 170 &data->emp_curr_control); 171 of_property_read_u32(np, "samsung,picophy-dc-vol-level-adjust", 172 &data->dc_vol_level_adjust); 173 174 return data; 175 } 176 177 /* End of common functions shared by usbmisc drivers*/ 178 static int imx_get_clks(struct device *dev) 179 { 180 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 181 int ret = 0; 182 183 data->clk_ipg = devm_clk_get(dev, "ipg"); 184 if (IS_ERR(data->clk_ipg)) { 185 /* If the platform only needs one clocks */ 186 data->clk = devm_clk_get(dev, NULL); 187 if (IS_ERR(data->clk)) { 188 ret = PTR_ERR(data->clk); 189 dev_err(dev, 190 "Failed to get clks, err=%ld,%ld\n", 191 PTR_ERR(data->clk), PTR_ERR(data->clk_ipg)); 192 return ret; 193 } 194 return ret; 195 } 196 197 data->clk_ahb = devm_clk_get(dev, "ahb"); 198 if (IS_ERR(data->clk_ahb)) { 199 ret = PTR_ERR(data->clk_ahb); 200 dev_err(dev, 201 "Failed to get ahb clock, err=%d\n", ret); 202 return ret; 203 } 204 205 data->clk_per = devm_clk_get(dev, "per"); 206 if (IS_ERR(data->clk_per)) { 207 ret = PTR_ERR(data->clk_per); 208 dev_err(dev, 209 "Failed to get per clock, err=%d\n", ret); 210 return ret; 211 } 212 213 data->need_three_clks = true; 214 return ret; 215 } 216 217 static int imx_prepare_enable_clks(struct device *dev) 218 { 219 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 220 int ret = 0; 221 222 if (data->need_three_clks) { 223 ret = clk_prepare_enable(data->clk_ipg); 224 if (ret) { 225 dev_err(dev, 226 "Failed to prepare/enable ipg clk, err=%d\n", 227 ret); 228 return ret; 229 } 230 231 ret = clk_prepare_enable(data->clk_ahb); 232 if (ret) { 233 dev_err(dev, 234 "Failed to prepare/enable ahb clk, err=%d\n", 235 ret); 236 clk_disable_unprepare(data->clk_ipg); 237 return ret; 238 } 239 240 ret = clk_prepare_enable(data->clk_per); 241 if (ret) { 242 dev_err(dev, 243 "Failed to prepare/enable per clk, err=%d\n", 244 ret); 245 clk_disable_unprepare(data->clk_ahb); 246 clk_disable_unprepare(data->clk_ipg); 247 return ret; 248 } 249 } else { 250 ret = clk_prepare_enable(data->clk); 251 if (ret) { 252 dev_err(dev, 253 "Failed to prepare/enable clk, err=%d\n", 254 ret); 255 return ret; 256 } 257 } 258 259 return ret; 260 } 261 262 static void imx_disable_unprepare_clks(struct device *dev) 263 { 264 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 265 266 if (data->need_three_clks) { 267 clk_disable_unprepare(data->clk_per); 268 clk_disable_unprepare(data->clk_ahb); 269 clk_disable_unprepare(data->clk_ipg); 270 } else { 271 clk_disable_unprepare(data->clk); 272 } 273 } 274 275 static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event) 276 { 277 struct device *dev = ci->dev->parent; 278 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 279 int ret = 0; 280 struct imx_usbmisc_data *mdata = data->usbmisc_data; 281 282 switch (event) { 283 case CI_HDRC_IMX_HSIC_ACTIVE_EVENT: 284 if (data->pinctrl) { 285 ret = pinctrl_select_state(data->pinctrl, 286 data->pinctrl_hsic_active); 287 if (ret) 288 dev_err(dev, 289 "hsic_active select failed, err=%d\n", 290 ret); 291 } 292 break; 293 case CI_HDRC_IMX_HSIC_SUSPEND_EVENT: 294 ret = imx_usbmisc_hsic_set_connect(mdata); 295 if (ret) 296 dev_err(dev, 297 "hsic_set_connect failed, err=%d\n", ret); 298 break; 299 case CI_HDRC_CONTROLLER_VBUS_EVENT: 300 if (ci->vbus_active) 301 ret = imx_usbmisc_charger_detection(mdata, true); 302 else 303 ret = imx_usbmisc_charger_detection(mdata, false); 304 if (ci->usb_phy) 305 schedule_work(&ci->usb_phy->chg_work); 306 break; 307 default: 308 break; 309 } 310 311 return ret; 312 } 313 314 static int ci_hdrc_imx_probe(struct platform_device *pdev) 315 { 316 struct ci_hdrc_imx_data *data; 317 struct ci_hdrc_platform_data pdata = { 318 .name = dev_name(&pdev->dev), 319 .capoffset = DEF_CAPOFFSET, 320 .notify_event = ci_hdrc_imx_notify_event, 321 }; 322 int ret; 323 const struct ci_hdrc_imx_platform_flag *imx_platform_flag; 324 struct device_node *np = pdev->dev.of_node; 325 struct device *dev = &pdev->dev; 326 327 imx_platform_flag = of_device_get_match_data(&pdev->dev); 328 329 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 330 if (!data) 331 return -ENOMEM; 332 333 data->plat_data = imx_platform_flag; 334 pdata.flags |= imx_platform_flag->flags; 335 platform_set_drvdata(pdev, data); 336 data->usbmisc_data = usbmisc_get_init_data(dev); 337 if (IS_ERR(data->usbmisc_data)) 338 return PTR_ERR(data->usbmisc_data); 339 340 if ((of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) 341 && data->usbmisc_data) { 342 pdata.flags |= CI_HDRC_IMX_IS_HSIC; 343 data->usbmisc_data->hsic = 1; 344 data->pinctrl = devm_pinctrl_get(dev); 345 if (PTR_ERR(data->pinctrl) == -ENODEV) 346 data->pinctrl = NULL; 347 else if (IS_ERR(data->pinctrl)) { 348 if (PTR_ERR(data->pinctrl) != -EPROBE_DEFER) 349 dev_err(dev, "pinctrl get failed, err=%ld\n", 350 PTR_ERR(data->pinctrl)); 351 return PTR_ERR(data->pinctrl); 352 } 353 354 data->hsic_pad_regulator = 355 devm_regulator_get_optional(dev, "hsic"); 356 if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) { 357 /* no pad regualator is needed */ 358 data->hsic_pad_regulator = NULL; 359 } else if (IS_ERR(data->hsic_pad_regulator)) { 360 if (PTR_ERR(data->hsic_pad_regulator) != -EPROBE_DEFER) 361 dev_err(dev, 362 "Get HSIC pad regulator error: %ld\n", 363 PTR_ERR(data->hsic_pad_regulator)); 364 return PTR_ERR(data->hsic_pad_regulator); 365 } 366 367 if (data->hsic_pad_regulator) { 368 ret = regulator_enable(data->hsic_pad_regulator); 369 if (ret) { 370 dev_err(dev, 371 "Failed to enable HSIC pad regulator\n"); 372 return ret; 373 } 374 } 375 } 376 377 /* HSIC pinctrl handling */ 378 if (data->pinctrl) { 379 struct pinctrl_state *pinctrl_hsic_idle; 380 381 pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle"); 382 if (IS_ERR(pinctrl_hsic_idle)) { 383 dev_err(dev, 384 "pinctrl_hsic_idle lookup failed, err=%ld\n", 385 PTR_ERR(pinctrl_hsic_idle)); 386 return PTR_ERR(pinctrl_hsic_idle); 387 } 388 389 ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle); 390 if (ret) { 391 dev_err(dev, "hsic_idle select failed, err=%d\n", ret); 392 return ret; 393 } 394 395 data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl, 396 "active"); 397 if (IS_ERR(data->pinctrl_hsic_active)) { 398 dev_err(dev, 399 "pinctrl_hsic_active lookup failed, err=%ld\n", 400 PTR_ERR(data->pinctrl_hsic_active)); 401 return PTR_ERR(data->pinctrl_hsic_active); 402 } 403 } 404 405 if (pdata.flags & CI_HDRC_PMQOS) 406 cpu_latency_qos_add_request(&data->pm_qos_req, 0); 407 408 ret = imx_get_clks(dev); 409 if (ret) 410 goto disable_hsic_regulator; 411 412 ret = imx_prepare_enable_clks(dev); 413 if (ret) 414 goto disable_hsic_regulator; 415 416 data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0); 417 if (IS_ERR(data->phy)) { 418 ret = PTR_ERR(data->phy); 419 /* Return -EINVAL if no usbphy is available */ 420 if (ret == -ENODEV) 421 data->phy = NULL; 422 else 423 goto err_clk; 424 } 425 426 pdata.usb_phy = data->phy; 427 if (data->usbmisc_data) 428 data->usbmisc_data->usb_phy = data->phy; 429 430 if ((of_device_is_compatible(np, "fsl,imx53-usb") || 431 of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy && 432 of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) { 433 pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL; 434 data->override_phy_control = true; 435 usb_phy_init(pdata.usb_phy); 436 } 437 438 if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) 439 data->supports_runtime_pm = true; 440 441 ret = imx_usbmisc_init(data->usbmisc_data); 442 if (ret) { 443 dev_err(dev, "usbmisc init failed, ret=%d\n", ret); 444 goto err_clk; 445 } 446 447 data->ci_pdev = ci_hdrc_add_device(dev, 448 pdev->resource, pdev->num_resources, 449 &pdata); 450 if (IS_ERR(data->ci_pdev)) { 451 ret = PTR_ERR(data->ci_pdev); 452 if (ret != -EPROBE_DEFER) 453 dev_err(dev, "ci_hdrc_add_device failed, err=%d\n", 454 ret); 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 { 532 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 533 int ret = 0; 534 535 dev_dbg(dev, "at %s\n", __func__); 536 537 ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, false); 538 if (ret) { 539 dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret); 540 return ret; 541 } 542 543 imx_disable_unprepare_clks(dev); 544 if (data->plat_data->flags & CI_HDRC_PMQOS) 545 cpu_latency_qos_remove_request(&data->pm_qos_req); 546 547 data->in_lpm = true; 548 549 return 0; 550 } 551 552 static int __maybe_unused imx_controller_resume(struct device *dev) 553 { 554 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 555 int ret = 0; 556 557 dev_dbg(dev, "at %s\n", __func__); 558 559 if (!data->in_lpm) { 560 WARN_ON(1); 561 return 0; 562 } 563 564 if (data->plat_data->flags & CI_HDRC_PMQOS) 565 cpu_latency_qos_add_request(&data->pm_qos_req, 0); 566 567 ret = imx_prepare_enable_clks(dev); 568 if (ret) 569 return ret; 570 571 data->in_lpm = false; 572 573 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false); 574 if (ret) { 575 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); 576 goto clk_disable; 577 } 578 579 ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, true); 580 if (ret) { 581 dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret); 582 goto hsic_set_clk_fail; 583 } 584 585 return 0; 586 587 hsic_set_clk_fail: 588 imx_usbmisc_set_wakeup(data->usbmisc_data, true); 589 clk_disable: 590 imx_disable_unprepare_clks(dev); 591 return ret; 592 } 593 594 static int __maybe_unused ci_hdrc_imx_suspend(struct device *dev) 595 { 596 int ret; 597 598 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 599 600 if (data->in_lpm) 601 /* The core's suspend doesn't run */ 602 return 0; 603 604 if (device_may_wakeup(dev)) { 605 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); 606 if (ret) { 607 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", 608 ret); 609 return ret; 610 } 611 } 612 613 ret = imx_controller_suspend(dev); 614 if (ret) 615 return ret; 616 617 pinctrl_pm_select_sleep_state(dev); 618 return ret; 619 } 620 621 static int __maybe_unused ci_hdrc_imx_resume(struct device *dev) 622 { 623 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 624 int ret; 625 626 pinctrl_pm_select_default_state(dev); 627 ret = imx_controller_resume(dev); 628 if (!ret && data->supports_runtime_pm) { 629 pm_runtime_disable(dev); 630 pm_runtime_set_active(dev); 631 pm_runtime_enable(dev); 632 } 633 634 return ret; 635 } 636 637 static int __maybe_unused ci_hdrc_imx_runtime_suspend(struct device *dev) 638 { 639 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 640 int ret; 641 642 if (data->in_lpm) { 643 WARN_ON(1); 644 return 0; 645 } 646 647 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); 648 if (ret) { 649 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); 650 return ret; 651 } 652 653 return imx_controller_suspend(dev); 654 } 655 656 static int __maybe_unused ci_hdrc_imx_runtime_resume(struct device *dev) 657 { 658 return imx_controller_resume(dev); 659 } 660 661 static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { 662 SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) 663 SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, 664 ci_hdrc_imx_runtime_resume, NULL) 665 }; 666 static struct platform_driver ci_hdrc_imx_driver = { 667 .probe = ci_hdrc_imx_probe, 668 .remove = ci_hdrc_imx_remove, 669 .shutdown = ci_hdrc_imx_shutdown, 670 .driver = { 671 .name = "imx_usb", 672 .of_match_table = ci_hdrc_imx_dt_ids, 673 .pm = &ci_hdrc_imx_pm_ops, 674 }, 675 }; 676 677 module_platform_driver(ci_hdrc_imx_driver); 678 679 MODULE_ALIAS("platform:imx-usb"); 680 MODULE_LICENSE("GPL"); 681 MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); 682 MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); 683 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); 684