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 of_device_id *of_id; 324 const struct ci_hdrc_imx_platform_flag *imx_platform_flag; 325 struct device_node *np = pdev->dev.of_node; 326 struct device *dev = &pdev->dev; 327 328 of_id = of_match_device(ci_hdrc_imx_dt_ids, dev); 329 if (!of_id) 330 return -ENODEV; 331 332 imx_platform_flag = of_id->data; 333 334 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 335 if (!data) 336 return -ENOMEM; 337 338 data->plat_data = imx_platform_flag; 339 pdata.flags |= imx_platform_flag->flags; 340 platform_set_drvdata(pdev, data); 341 data->usbmisc_data = usbmisc_get_init_data(dev); 342 if (IS_ERR(data->usbmisc_data)) 343 return PTR_ERR(data->usbmisc_data); 344 345 if ((of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) 346 && data->usbmisc_data) { 347 pdata.flags |= CI_HDRC_IMX_IS_HSIC; 348 data->usbmisc_data->hsic = 1; 349 data->pinctrl = devm_pinctrl_get(dev); 350 if (PTR_ERR(data->pinctrl) == -ENODEV) 351 data->pinctrl = NULL; 352 else if (IS_ERR(data->pinctrl)) { 353 if (PTR_ERR(data->pinctrl) != -EPROBE_DEFER) 354 dev_err(dev, "pinctrl get failed, err=%ld\n", 355 PTR_ERR(data->pinctrl)); 356 return PTR_ERR(data->pinctrl); 357 } 358 359 data->hsic_pad_regulator = 360 devm_regulator_get_optional(dev, "hsic"); 361 if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) { 362 /* no pad regualator is needed */ 363 data->hsic_pad_regulator = NULL; 364 } else if (IS_ERR(data->hsic_pad_regulator)) { 365 if (PTR_ERR(data->hsic_pad_regulator) != -EPROBE_DEFER) 366 dev_err(dev, 367 "Get HSIC pad regulator error: %ld\n", 368 PTR_ERR(data->hsic_pad_regulator)); 369 return PTR_ERR(data->hsic_pad_regulator); 370 } 371 372 if (data->hsic_pad_regulator) { 373 ret = regulator_enable(data->hsic_pad_regulator); 374 if (ret) { 375 dev_err(dev, 376 "Failed to enable HSIC pad regulator\n"); 377 return ret; 378 } 379 } 380 } 381 382 /* HSIC pinctrl handling */ 383 if (data->pinctrl) { 384 struct pinctrl_state *pinctrl_hsic_idle; 385 386 pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle"); 387 if (IS_ERR(pinctrl_hsic_idle)) { 388 dev_err(dev, 389 "pinctrl_hsic_idle lookup failed, err=%ld\n", 390 PTR_ERR(pinctrl_hsic_idle)); 391 return PTR_ERR(pinctrl_hsic_idle); 392 } 393 394 ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle); 395 if (ret) { 396 dev_err(dev, "hsic_idle select failed, err=%d\n", ret); 397 return ret; 398 } 399 400 data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl, 401 "active"); 402 if (IS_ERR(data->pinctrl_hsic_active)) { 403 dev_err(dev, 404 "pinctrl_hsic_active lookup failed, err=%ld\n", 405 PTR_ERR(data->pinctrl_hsic_active)); 406 return PTR_ERR(data->pinctrl_hsic_active); 407 } 408 } 409 410 if (pdata.flags & CI_HDRC_PMQOS) 411 cpu_latency_qos_add_request(&data->pm_qos_req, 0); 412 413 ret = imx_get_clks(dev); 414 if (ret) 415 goto disable_hsic_regulator; 416 417 ret = imx_prepare_enable_clks(dev); 418 if (ret) 419 goto disable_hsic_regulator; 420 421 data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0); 422 if (IS_ERR(data->phy)) { 423 ret = PTR_ERR(data->phy); 424 /* Return -EINVAL if no usbphy is available */ 425 if (ret == -ENODEV) 426 data->phy = NULL; 427 else 428 goto err_clk; 429 } 430 431 pdata.usb_phy = data->phy; 432 if (data->usbmisc_data) 433 data->usbmisc_data->usb_phy = data->phy; 434 435 if ((of_device_is_compatible(np, "fsl,imx53-usb") || 436 of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy && 437 of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) { 438 pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL; 439 data->override_phy_control = true; 440 usb_phy_init(pdata.usb_phy); 441 } 442 443 if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) 444 data->supports_runtime_pm = true; 445 446 ret = imx_usbmisc_init(data->usbmisc_data); 447 if (ret) { 448 dev_err(dev, "usbmisc init failed, ret=%d\n", ret); 449 goto err_clk; 450 } 451 452 data->ci_pdev = ci_hdrc_add_device(dev, 453 pdev->resource, pdev->num_resources, 454 &pdata); 455 if (IS_ERR(data->ci_pdev)) { 456 ret = PTR_ERR(data->ci_pdev); 457 if (ret != -EPROBE_DEFER) 458 dev_err(dev, "ci_hdrc_add_device failed, err=%d\n", 459 ret); 460 goto err_clk; 461 } 462 463 if (data->usbmisc_data) { 464 if (!IS_ERR(pdata.id_extcon.edev) || 465 of_property_read_bool(np, "usb-role-switch")) 466 data->usbmisc_data->ext_id = 1; 467 468 if (!IS_ERR(pdata.vbus_extcon.edev) || 469 of_property_read_bool(np, "usb-role-switch")) 470 data->usbmisc_data->ext_vbus = 1; 471 472 /* usbmisc needs to know dr mode to choose wakeup setting */ 473 data->usbmisc_data->available_role = 474 ci_hdrc_query_available_role(data->ci_pdev); 475 } 476 477 ret = imx_usbmisc_init_post(data->usbmisc_data); 478 if (ret) { 479 dev_err(dev, "usbmisc post failed, ret=%d\n", ret); 480 goto disable_device; 481 } 482 483 if (data->supports_runtime_pm) { 484 pm_runtime_set_active(dev); 485 pm_runtime_enable(dev); 486 } 487 488 device_set_wakeup_capable(dev, true); 489 490 return 0; 491 492 disable_device: 493 ci_hdrc_remove_device(data->ci_pdev); 494 err_clk: 495 imx_disable_unprepare_clks(dev); 496 disable_hsic_regulator: 497 if (data->hsic_pad_regulator) 498 /* don't overwrite original ret (cf. EPROBE_DEFER) */ 499 regulator_disable(data->hsic_pad_regulator); 500 if (pdata.flags & CI_HDRC_PMQOS) 501 cpu_latency_qos_remove_request(&data->pm_qos_req); 502 data->ci_pdev = NULL; 503 return ret; 504 } 505 506 static int ci_hdrc_imx_remove(struct platform_device *pdev) 507 { 508 struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); 509 510 if (data->supports_runtime_pm) { 511 pm_runtime_get_sync(&pdev->dev); 512 pm_runtime_disable(&pdev->dev); 513 pm_runtime_put_noidle(&pdev->dev); 514 } 515 if (data->ci_pdev) 516 ci_hdrc_remove_device(data->ci_pdev); 517 if (data->override_phy_control) 518 usb_phy_shutdown(data->phy); 519 if (data->ci_pdev) { 520 imx_disable_unprepare_clks(&pdev->dev); 521 if (data->plat_data->flags & CI_HDRC_PMQOS) 522 cpu_latency_qos_remove_request(&data->pm_qos_req); 523 if (data->hsic_pad_regulator) 524 regulator_disable(data->hsic_pad_regulator); 525 } 526 527 return 0; 528 } 529 530 static void ci_hdrc_imx_shutdown(struct platform_device *pdev) 531 { 532 ci_hdrc_imx_remove(pdev); 533 } 534 535 static int __maybe_unused imx_controller_suspend(struct device *dev) 536 { 537 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 538 int ret = 0; 539 540 dev_dbg(dev, "at %s\n", __func__); 541 542 ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, false); 543 if (ret) { 544 dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret); 545 return ret; 546 } 547 548 imx_disable_unprepare_clks(dev); 549 if (data->plat_data->flags & CI_HDRC_PMQOS) 550 cpu_latency_qos_remove_request(&data->pm_qos_req); 551 552 data->in_lpm = true; 553 554 return 0; 555 } 556 557 static int __maybe_unused imx_controller_resume(struct device *dev) 558 { 559 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 560 int ret = 0; 561 562 dev_dbg(dev, "at %s\n", __func__); 563 564 if (!data->in_lpm) { 565 WARN_ON(1); 566 return 0; 567 } 568 569 if (data->plat_data->flags & CI_HDRC_PMQOS) 570 cpu_latency_qos_add_request(&data->pm_qos_req, 0); 571 572 ret = imx_prepare_enable_clks(dev); 573 if (ret) 574 return ret; 575 576 data->in_lpm = false; 577 578 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false); 579 if (ret) { 580 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); 581 goto clk_disable; 582 } 583 584 ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, true); 585 if (ret) { 586 dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret); 587 goto hsic_set_clk_fail; 588 } 589 590 return 0; 591 592 hsic_set_clk_fail: 593 imx_usbmisc_set_wakeup(data->usbmisc_data, true); 594 clk_disable: 595 imx_disable_unprepare_clks(dev); 596 return ret; 597 } 598 599 static int __maybe_unused ci_hdrc_imx_suspend(struct device *dev) 600 { 601 int ret; 602 603 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 604 605 if (data->in_lpm) 606 /* The core's suspend doesn't run */ 607 return 0; 608 609 if (device_may_wakeup(dev)) { 610 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); 611 if (ret) { 612 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", 613 ret); 614 return ret; 615 } 616 } 617 618 ret = imx_controller_suspend(dev); 619 if (ret) 620 return ret; 621 622 pinctrl_pm_select_sleep_state(dev); 623 return ret; 624 } 625 626 static int __maybe_unused ci_hdrc_imx_resume(struct device *dev) 627 { 628 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 629 int ret; 630 631 pinctrl_pm_select_default_state(dev); 632 ret = imx_controller_resume(dev); 633 if (!ret && data->supports_runtime_pm) { 634 pm_runtime_disable(dev); 635 pm_runtime_set_active(dev); 636 pm_runtime_enable(dev); 637 } 638 639 return ret; 640 } 641 642 static int __maybe_unused ci_hdrc_imx_runtime_suspend(struct device *dev) 643 { 644 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 645 int ret; 646 647 if (data->in_lpm) { 648 WARN_ON(1); 649 return 0; 650 } 651 652 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); 653 if (ret) { 654 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); 655 return ret; 656 } 657 658 return imx_controller_suspend(dev); 659 } 660 661 static int __maybe_unused ci_hdrc_imx_runtime_resume(struct device *dev) 662 { 663 return imx_controller_resume(dev); 664 } 665 666 static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { 667 SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) 668 SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, 669 ci_hdrc_imx_runtime_resume, NULL) 670 }; 671 static struct platform_driver ci_hdrc_imx_driver = { 672 .probe = ci_hdrc_imx_probe, 673 .remove = ci_hdrc_imx_remove, 674 .shutdown = ci_hdrc_imx_shutdown, 675 .driver = { 676 .name = "imx_usb", 677 .of_match_table = ci_hdrc_imx_dt_ids, 678 .pm = &ci_hdrc_imx_pm_ops, 679 }, 680 }; 681 682 module_platform_driver(ci_hdrc_imx_driver); 683 684 MODULE_ALIAS("platform:imx-usb"); 685 MODULE_LICENSE("GPL"); 686 MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); 687 MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); 688 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); 689