drivers/usb/chipidea/ci_hdrc_imx.c

   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>");