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 };
  62
  63 static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = {
  64         .flags = CI_HDRC_SUPPORTS_RUNTIME_PM,
  65 };
  66
  67 static const struct ci_hdrc_imx_platform_flag imx7ulp_usb_data = {
  68         .flags = CI_HDRC_SUPPORTS_RUNTIME_PM |
  69                 CI_HDRC_PMQOS,
  70 };
  71
  72 static const struct of_device_id ci_hdrc_imx_dt_ids[] = {
  73         { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data},
  74         { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data},
  75         { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data},
  76         { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data},
  77         { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data},
  78         { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data},
  79         { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data},
  80         { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data},
  81         { .compatible = "fsl,imx7ulp-usb", .data = &imx7ulp_usb_data},
  82         { /* sentinel */ }
  83 };
  84 MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids);
  85
  86 struct ci_hdrc_imx_data {
  87         struct usb_phy *phy;
  88         struct platform_device *ci_pdev;
  89         struct clk *clk;
  90         struct imx_usbmisc_data *usbmisc_data;
  91         bool supports_runtime_pm;
  92         bool override_phy_control;
  93         bool in_lpm;
  94         struct pinctrl *pinctrl;
  95         struct pinctrl_state *pinctrl_hsic_active;
  96         struct regulator *hsic_pad_regulator;
  97         /* SoC before i.mx6 (except imx23/imx28) needs three clks */
  98         bool need_three_clks;
  99         struct clk *clk_ipg;
 100         struct clk *clk_ahb;
 101         struct clk *clk_per;
 102         /* --------------------------------- */
 103         struct pm_qos_request pm_qos_req;
 104         const struct ci_hdrc_imx_platform_flag *plat_data;
 105 };
 106
 107 /* Common functions shared by usbmisc drivers */
 108
 109 static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
 110 {
 111         struct platform_device *misc_pdev;
 112         struct device_node *np = dev->of_node;
 113         struct of_phandle_args args;
 114         struct imx_usbmisc_data *data;
 115         int ret;
 116
 117         /*
 118          * In case the fsl,usbmisc property is not present this device doesn't
 119          * need usbmisc. Return NULL (which is no error here)
 120          */
 121         if (!of_get_property(np, "fsl,usbmisc", NULL))
 122                 return NULL;
 123
 124         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 125         if (!data)
 126                 return ERR_PTR(-ENOMEM);
 127
 128         ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells",
 129                                         0, &args);
 130         if (ret) {
 131                 dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n",
 132                         ret);
 133                 return ERR_PTR(ret);
 134         }
 135
 136         data->index = args.args[0];
 137
 138         misc_pdev = of_find_device_by_node(args.np);
 139         of_node_put(args.np);
 140
 141         if (!misc_pdev || !platform_get_drvdata(misc_pdev))
 142                 return ERR_PTR(-EPROBE_DEFER);
 143
 144         data->dev = &misc_pdev->dev;
 145
 146         /*
 147          * Check the various over current related properties. If over current
 148          * detection is disabled we're not interested in the polarity.
 149          */
 150         if (of_find_property(np, "disable-over-current", NULL)) {
 151                 data->disable_oc = 1;
 152         } else if (of_find_property(np, "over-current-active-high", NULL)) {
 153                 data->oc_pol_active_low = 0;
 154                 data->oc_pol_configured = 1;
 155         } else if (of_find_property(np, "over-current-active-low", NULL)) {
 156                 data->oc_pol_active_low = 1;
 157                 data->oc_pol_configured = 1;
 158         } else {
 159                 dev_warn(dev, "No over current polarity defined\n");
 160         }
 161
 162         data->pwr_pol = of_property_read_bool(np, "power-active-high");
 163         data->evdo = of_property_read_bool(np, "external-vbus-divider");
 164
 165         if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI)
 166                 data->ulpi = 1;
 167
 168         of_property_read_u32(np, "samsung,picophy-pre-emp-curr-control",
 169                         &data->emp_curr_control);
 170         of_property_read_u32(np, "samsung,picophy-dc-vol-level-adjust",
 171                         &data->dc_vol_level_adjust);
 172
 173         return data;
 174 }
 175
 176 /* End of common functions shared by usbmisc drivers*/
 177 static int imx_get_clks(struct device *dev)
 178 {
 179         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 180         int ret = 0;
 181
 182         data->clk_ipg = devm_clk_get(dev, "ipg");
 183         if (IS_ERR(data->clk_ipg)) {
 184                 /* If the platform only needs one clocks */
 185                 data->clk = devm_clk_get(dev, NULL);
 186                 if (IS_ERR(data->clk)) {
 187                         ret = PTR_ERR(data->clk);
 188                         dev_err(dev,
 189                                 "Failed to get clks, err=%ld,%ld\n",
 190                                 PTR_ERR(data->clk), PTR_ERR(data->clk_ipg));
 191                         return ret;
 192                 }
 193                 return ret;
 194         }
 195
 196         data->clk_ahb = devm_clk_get(dev, "ahb");
 197         if (IS_ERR(data->clk_ahb)) {
 198                 ret = PTR_ERR(data->clk_ahb);
 199                 dev_err(dev,
 200                         "Failed to get ahb clock, err=%d\n", ret);
 201                 return ret;
 202         }
 203
 204         data->clk_per = devm_clk_get(dev, "per");
 205         if (IS_ERR(data->clk_per)) {
 206                 ret = PTR_ERR(data->clk_per);
 207                 dev_err(dev,
 208                         "Failed to get per clock, err=%d\n", ret);
 209                 return ret;
 210         }
 211
 212         data->need_three_clks = true;
 213         return ret;
 214 }
 215
 216 static int imx_prepare_enable_clks(struct device *dev)
 217 {
 218         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 219         int ret = 0;
 220
 221         if (data->need_three_clks) {
 222                 ret = clk_prepare_enable(data->clk_ipg);
 223                 if (ret) {
 224                         dev_err(dev,
 225                                 "Failed to prepare/enable ipg clk, err=%d\n",
 226                                 ret);
 227                         return ret;
 228                 }
 229
 230                 ret = clk_prepare_enable(data->clk_ahb);
 231                 if (ret) {
 232                         dev_err(dev,
 233                                 "Failed to prepare/enable ahb clk, err=%d\n",
 234                                 ret);
 235                         clk_disable_unprepare(data->clk_ipg);
 236                         return ret;
 237                 }
 238
 239                 ret = clk_prepare_enable(data->clk_per);
 240                 if (ret) {
 241                         dev_err(dev,
 242                                 "Failed to prepare/enable per clk, err=%d\n",
 243                                 ret);
 244                         clk_disable_unprepare(data->clk_ahb);
 245                         clk_disable_unprepare(data->clk_ipg);
 246                         return ret;
 247                 }
 248         } else {
 249                 ret = clk_prepare_enable(data->clk);
 250                 if (ret) {
 251                         dev_err(dev,
 252                                 "Failed to prepare/enable clk, err=%d\n",
 253                                 ret);
 254                         return ret;
 255                 }
 256         }
 257
 258         return ret;
 259 }
 260
 261 static void imx_disable_unprepare_clks(struct device *dev)
 262 {
 263         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 264
 265         if (data->need_three_clks) {
 266                 clk_disable_unprepare(data->clk_per);
 267                 clk_disable_unprepare(data->clk_ahb);
 268                 clk_disable_unprepare(data->clk_ipg);
 269         } else {
 270                 clk_disable_unprepare(data->clk);
 271         }
 272 }
 273
 274 static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event)
 275 {
 276         struct device *dev = ci->dev->parent;
 277         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 278         int ret = 0;
 279         struct imx_usbmisc_data *mdata = data->usbmisc_data;
 280
 281         switch (event) {
 282         case CI_HDRC_IMX_HSIC_ACTIVE_EVENT:
 283                 if (data->pinctrl) {
 284                         ret = pinctrl_select_state(data->pinctrl,
 285                                         data->pinctrl_hsic_active);
 286                         if (ret)
 287                                 dev_err(dev,
 288                                         "hsic_active select failed, err=%d\n",
 289                                         ret);
 290                 }
 291                 break;
 292         case CI_HDRC_IMX_HSIC_SUSPEND_EVENT:
 293                 ret = imx_usbmisc_hsic_set_connect(mdata);
 294                 if (ret)
 295                         dev_err(dev,
 296                                 "hsic_set_connect failed, err=%d\n", ret);
 297                 break;
 298         case CI_HDRC_CONTROLLER_VBUS_EVENT:
 299                 if (ci->vbus_active)
 300                         ret = imx_usbmisc_charger_detection(mdata, true);
 301                 else
 302                         ret = imx_usbmisc_charger_detection(mdata, false);
 303                 if (ci->usb_phy)
 304                         schedule_work(&ci->usb_phy->chg_work);
 305                 break;
 306         default:
 307                 break;
 308         }
 309
 310         return ret;
 311 }
 312
 313 static int ci_hdrc_imx_probe(struct platform_device *pdev)
 314 {
 315         struct ci_hdrc_imx_data *data;
 316         struct ci_hdrc_platform_data pdata = {
 317                 .name           = dev_name(&pdev->dev),
 318                 .capoffset      = DEF_CAPOFFSET,
 319                 .notify_event   = ci_hdrc_imx_notify_event,
 320         };
 321         int ret;
 322         const struct of_device_id *of_id;
 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         of_id = of_match_device(ci_hdrc_imx_dt_ids, dev);
 328         if (!of_id)
 329                 return -ENODEV;
 330
 331         imx_platform_flag = of_id->data;
 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                         if (PTR_ERR(data->pinctrl) != -EPROBE_DEFER)
 353                                 dev_err(dev, "pinctrl get failed, err=%ld\n",
 354                                         PTR_ERR(data->pinctrl));
 355                         return PTR_ERR(data->pinctrl);
 356                 }
 357
 358                 data->hsic_pad_regulator =
 359                                 devm_regulator_get_optional(dev, "hsic");
 360                 if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) {
 361                         /* no pad regualator is needed */
 362                         data->hsic_pad_regulator = NULL;
 363                 } else if (IS_ERR(data->hsic_pad_regulator)) {
 364                         if (PTR_ERR(data->hsic_pad_regulator) != -EPROBE_DEFER)
 365                                 dev_err(dev,
 366                                         "Get HSIC pad regulator error: %ld\n",
 367                                         PTR_ERR(data->hsic_pad_regulator));
 368                         return PTR_ERR(data->hsic_pad_regulator);
 369                 }
 370
 371                 if (data->hsic_pad_regulator) {
 372                         ret = regulator_enable(data->hsic_pad_regulator);
 373                         if (ret) {
 374                                 dev_err(dev,
 375                                         "Failed to enable HSIC pad regulator\n");
 376                                 return ret;
 377                         }
 378                 }
 379         }
 380
 381         /* HSIC pinctrl handling */
 382         if (data->pinctrl) {
 383                 struct pinctrl_state *pinctrl_hsic_idle;
 384
 385                 pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle");
 386                 if (IS_ERR(pinctrl_hsic_idle)) {
 387                         dev_err(dev,
 388                                 "pinctrl_hsic_idle lookup failed, err=%ld\n",
 389                                         PTR_ERR(pinctrl_hsic_idle));
 390                         return PTR_ERR(pinctrl_hsic_idle);
 391                 }
 392
 393                 ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle);
 394                 if (ret) {
 395                         dev_err(dev, "hsic_idle select failed, err=%d\n", ret);
 396                         return ret;
 397                 }
 398
 399                 data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl,
 400                                                                 "active");
 401                 if (IS_ERR(data->pinctrl_hsic_active)) {
 402                         dev_err(dev,
 403                                 "pinctrl_hsic_active lookup failed, err=%ld\n",
 404                                         PTR_ERR(data->pinctrl_hsic_active));
 405                         return PTR_ERR(data->pinctrl_hsic_active);
 406                 }
 407         }
 408
 409         if (pdata.flags & CI_HDRC_PMQOS)
 410                 cpu_latency_qos_add_request(&data->pm_qos_req, 0);
 411
 412         ret = imx_get_clks(dev);
 413         if (ret)
 414                 goto disable_hsic_regulator;
 415
 416         ret = imx_prepare_enable_clks(dev);
 417         if (ret)
 418                 goto disable_hsic_regulator;
 419
 420         data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0);
 421         if (IS_ERR(data->phy)) {
 422                 ret = PTR_ERR(data->phy);
 423                 /* Return -EINVAL if no usbphy is available */
 424                 if (ret == -ENODEV)
 425                         data->phy = NULL;
 426                 else
 427                         goto err_clk;
 428         }
 429
 430         pdata.usb_phy = data->phy;
 431         if (data->usbmisc_data)
 432                 data->usbmisc_data->usb_phy = data->phy;
 433
 434         if ((of_device_is_compatible(np, "fsl,imx53-usb") ||
 435              of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy &&
 436             of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) {
 437                 pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL;
 438                 data->override_phy_control = true;
 439                 usb_phy_init(pdata.usb_phy);
 440         }
 441
 442         if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM)
 443                 data->supports_runtime_pm = true;
 444
 445         ret = imx_usbmisc_init(data->usbmisc_data);
 446         if (ret) {
 447                 dev_err(dev, "usbmisc init failed, ret=%d\n", ret);
 448                 goto err_clk;
 449         }
 450
 451         data->ci_pdev = ci_hdrc_add_device(dev,
 452                                 pdev->resource, pdev->num_resources,
 453                                 &pdata);
 454         if (IS_ERR(data->ci_pdev)) {
 455                 ret = PTR_ERR(data->ci_pdev);
 456                 if (ret != -EPROBE_DEFER)
 457                         dev_err(dev, "ci_hdrc_add_device failed, err=%d\n",
 458                                         ret);
 459                 goto err_clk;
 460         }
 461
 462         if (data->usbmisc_data) {
 463                 if (!IS_ERR(pdata.id_extcon.edev) ||
 464                     of_property_read_bool(np, "usb-role-switch"))
 465                         data->usbmisc_data->ext_id = 1;
 466
 467                 if (!IS_ERR(pdata.vbus_extcon.edev) ||
 468                     of_property_read_bool(np, "usb-role-switch"))
 469                         data->usbmisc_data->ext_vbus = 1;
 470
 471                 /* usbmisc needs to know dr mode to choose wakeup setting */
 472                 data->usbmisc_data->available_role =
 473                         ci_hdrc_query_available_role(data->ci_pdev);
 474         }
 475
 476         ret = imx_usbmisc_init_post(data->usbmisc_data);
 477         if (ret) {
 478                 dev_err(dev, "usbmisc post failed, ret=%d\n", ret);
 479                 goto disable_device;
 480         }
 481
 482         if (data->supports_runtime_pm) {
 483                 pm_runtime_set_active(dev);
 484                 pm_runtime_enable(dev);
 485         }
 486
 487         device_set_wakeup_capable(dev, true);
 488
 489         return 0;
 490
 491 disable_device:
 492         ci_hdrc_remove_device(data->ci_pdev);
 493 err_clk:
 494         imx_disable_unprepare_clks(dev);
 495 disable_hsic_regulator:
 496         if (data->hsic_pad_regulator)
 497                 /* don't overwrite original ret (cf. EPROBE_DEFER) */
 498                 regulator_disable(data->hsic_pad_regulator);
 499         if (pdata.flags & CI_HDRC_PMQOS)
 500                 cpu_latency_qos_remove_request(&data->pm_qos_req);
 501         data->ci_pdev = NULL;
 502         return ret;
 503 }
 504
 505 static int ci_hdrc_imx_remove(struct platform_device *pdev)
 506 {
 507         struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev);
 508
 509         if (data->supports_runtime_pm) {
 510                 pm_runtime_get_sync(&pdev->dev);
 511                 pm_runtime_disable(&pdev->dev);
 512                 pm_runtime_put_noidle(&pdev->dev);
 513         }
 514         if (data->ci_pdev)
 515                 ci_hdrc_remove_device(data->ci_pdev);
 516         if (data->override_phy_control)
 517                 usb_phy_shutdown(data->phy);
 518         if (data->ci_pdev) {
 519                 imx_disable_unprepare_clks(&pdev->dev);
 520                 if (data->plat_data->flags & CI_HDRC_PMQOS)
 521                         cpu_latency_qos_remove_request(&data->pm_qos_req);
 522                 if (data->hsic_pad_regulator)
 523                         regulator_disable(data->hsic_pad_regulator);
 524         }
 525
 526         return 0;
 527 }
 528
 529 static void ci_hdrc_imx_shutdown(struct platform_device *pdev)
 530 {
 531         ci_hdrc_imx_remove(pdev);
 532 }
 533
 534 static int __maybe_unused imx_controller_suspend(struct device *dev)
 535 {
 536         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 537         int ret = 0;
 538
 539         dev_dbg(dev, "at %s\n", __func__);
 540
 541         ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, false);
 542         if (ret) {
 543                 dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret);
 544                 return ret;
 545         }
 546
 547         imx_disable_unprepare_clks(dev);
 548         if (data->plat_data->flags & CI_HDRC_PMQOS)
 549                 cpu_latency_qos_remove_request(&data->pm_qos_req);
 550
 551         data->in_lpm = true;
 552
 553         return 0;
 554 }
 555
 556 static int __maybe_unused imx_controller_resume(struct device *dev)
 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_set_wakeup(data->usbmisc_data, false);
 578         if (ret) {
 579                 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret);
 580                 goto clk_disable;
 581         }
 582
 583         ret = imx_usbmisc_hsic_set_clk(data->usbmisc_data, true);
 584         if (ret) {
 585                 dev_err(dev, "usbmisc hsic_set_clk failed, ret=%d\n", ret);
 586                 goto hsic_set_clk_fail;
 587         }
 588
 589         return 0;
 590
 591 hsic_set_clk_fail:
 592         imx_usbmisc_set_wakeup(data->usbmisc_data, true);
 593 clk_disable:
 594         imx_disable_unprepare_clks(dev);
 595         return ret;
 596 }
 597
 598 static int __maybe_unused ci_hdrc_imx_suspend(struct device *dev)
 599 {
 600         int ret;
 601
 602         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 603
 604         if (data->in_lpm)
 605                 /* The core's suspend doesn't run */
 606                 return 0;
 607
 608         if (device_may_wakeup(dev)) {
 609                 ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true);
 610                 if (ret) {
 611                         dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n",
 612                                         ret);
 613                         return ret;
 614                 }
 615         }
 616
 617         ret = imx_controller_suspend(dev);
 618         if (ret)
 619                 return ret;
 620
 621         pinctrl_pm_select_sleep_state(dev);
 622         return ret;
 623 }
 624
 625 static int __maybe_unused ci_hdrc_imx_resume(struct device *dev)
 626 {
 627         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 628         int ret;
 629
 630         pinctrl_pm_select_default_state(dev);
 631         ret = imx_controller_resume(dev);
 632         if (!ret && data->supports_runtime_pm) {
 633                 pm_runtime_disable(dev);
 634                 pm_runtime_set_active(dev);
 635                 pm_runtime_enable(dev);
 636         }
 637
 638         return ret;
 639 }
 640
 641 static int __maybe_unused ci_hdrc_imx_runtime_suspend(struct device *dev)
 642 {
 643         struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
 644         int ret;
 645
 646         if (data->in_lpm) {
 647                 WARN_ON(1);
 648                 return 0;
 649         }
 650
 651         ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true);
 652         if (ret) {
 653                 dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret);
 654                 return ret;
 655         }
 656
 657         return imx_controller_suspend(dev);
 658 }
 659
 660 static int __maybe_unused ci_hdrc_imx_runtime_resume(struct device *dev)
 661 {
 662         return imx_controller_resume(dev);
 663 }
 664
 665 static const struct dev_pm_ops ci_hdrc_imx_pm_ops = {
 666         SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume)
 667         SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend,
 668                         ci_hdrc_imx_runtime_resume, NULL)
 669 };
 670 static struct platform_driver ci_hdrc_imx_driver = {
 671         .probe = ci_hdrc_imx_probe,
 672         .remove = ci_hdrc_imx_remove,
 673         .shutdown = ci_hdrc_imx_shutdown,
 674         .driver = {
 675                 .name = "imx_usb",
 676                 .of_match_table = ci_hdrc_imx_dt_ids,
 677                 .pm = &ci_hdrc_imx_pm_ops,
 678          },
 679 };
 680
 681 module_platform_driver(ci_hdrc_imx_driver);
 682
 683 MODULE_ALIAS("platform:imx-usb");
 684 MODULE_LICENSE("GPL");
 685 MODULE_DESCRIPTION("CI HDRC i.MX USB binding");
 686 MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
 687 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");