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.h> 10 #include <linux/of_platform.h> 11 #include <linux/platform_device.h> 12 #include <linux/pm_runtime.h> 13 #include <linux/usb/chipidea.h> 14 #include <linux/usb/of.h> 15 #include <linux/clk.h> 16 #include <linux/pinctrl/consumer.h> 17 #include <linux/pm_qos.h> 18 19 #include "ci.h" 20 #include "ci_hdrc_imx.h" 21 22 struct ci_hdrc_imx_platform_flag { 23 unsigned int flags; 24 }; 25 26 static const struct ci_hdrc_imx_platform_flag imx23_usb_data = { 27 .flags = CI_HDRC_TURN_VBUS_EARLY_ON | 28 CI_HDRC_DISABLE_STREAMING, 29 }; 30 31 static const struct ci_hdrc_imx_platform_flag imx27_usb_data = { 32 .flags = CI_HDRC_DISABLE_STREAMING, 33 }; 34 35 static const struct ci_hdrc_imx_platform_flag imx28_usb_data = { 36 .flags = CI_HDRC_IMX28_WRITE_FIX | 37 CI_HDRC_TURN_VBUS_EARLY_ON | 38 CI_HDRC_DISABLE_STREAMING, 39 }; 40 41 static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = { 42 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 43 CI_HDRC_TURN_VBUS_EARLY_ON | 44 CI_HDRC_DISABLE_STREAMING, 45 }; 46 47 static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = { 48 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 49 CI_HDRC_TURN_VBUS_EARLY_ON | 50 CI_HDRC_DISABLE_HOST_STREAMING, 51 }; 52 53 static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = { 54 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 55 CI_HDRC_TURN_VBUS_EARLY_ON | 56 CI_HDRC_DISABLE_HOST_STREAMING, 57 }; 58 59 static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = { 60 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 61 CI_HDRC_TURN_VBUS_EARLY_ON | 62 CI_HDRC_DISABLE_DEVICE_STREAMING, 63 }; 64 65 static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = { 66 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM, 67 }; 68 69 static const struct ci_hdrc_imx_platform_flag imx7ulp_usb_data = { 70 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 71 CI_HDRC_HAS_PORTSC_PEC_MISSED | 72 CI_HDRC_PMQOS, 73 }; 74 75 static const struct ci_hdrc_imx_platform_flag imx8ulp_usb_data = { 76 .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | 77 CI_HDRC_HAS_PORTSC_PEC_MISSED, 78 }; 79 80 static const struct of_device_id ci_hdrc_imx_dt_ids[] = { 81 { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data}, 82 { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data}, 83 { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data}, 84 { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data}, 85 { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data}, 86 { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data}, 87 { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data}, 88 { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data}, 89 { .compatible = "fsl,imx7ulp-usb", .data = &imx7ulp_usb_data}, 90 { .compatible = "fsl,imx8ulp-usb", .data = &imx8ulp_usb_data}, 91 { /* sentinel */ } 92 }; 93 MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids); 94 95 struct ci_hdrc_imx_data { 96 struct usb_phy *phy; 97 struct platform_device *ci_pdev; 98 struct clk *clk; 99 struct imx_usbmisc_data *usbmisc_data; 100 bool supports_runtime_pm; 101 bool override_phy_control; 102 bool in_lpm; 103 struct pinctrl *pinctrl; 104 struct pinctrl_state *pinctrl_hsic_active; 105 struct regulator *hsic_pad_regulator; 106 /* SoC before i.mx6 (except imx23/imx28) needs three clks */ 107 bool need_three_clks; 108 struct clk *clk_ipg; 109 struct clk *clk_ahb; 110 struct clk *clk_per; 111 /* --------------------------------- */ 112 struct pm_qos_request pm_qos_req; 113 const struct ci_hdrc_imx_platform_flag *plat_data; 114 }; 115 116 /* Common functions shared by usbmisc drivers */ 117 118 static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) 119 { 120 struct platform_device *misc_pdev; 121 struct device_node *np = dev->of_node; 122 struct of_phandle_args args; 123 struct imx_usbmisc_data *data; 124 int ret; 125 126 /* 127 * In case the fsl,usbmisc property is not present this device doesn't 128 * need usbmisc. Return NULL (which is no error here) 129 */ 130 if (!of_get_property(np, "fsl,usbmisc", NULL)) 131 return NULL; 132 133 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 134 if (!data) 135 return ERR_PTR(-ENOMEM); 136 137 ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", 138 0, &args); 139 if (ret) { 140 dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", 141 ret); 142 return ERR_PTR(ret); 143 } 144 145 data->index = args.args[0]; 146 147 misc_pdev = of_find_device_by_node(args.np); 148 of_node_put(args.np); 149 150 if (!misc_pdev) 151 return ERR_PTR(-EPROBE_DEFER); 152 153 if (!platform_get_drvdata(misc_pdev)) { 154 put_device(&misc_pdev->dev); 155 return ERR_PTR(-EPROBE_DEFER); 156 } 157 data->dev = &misc_pdev->dev; 158 159 /* 160 * Check the various over current related properties. If over current 161 * detection is disabled we're not interested in the polarity. 162 */ 163 if (of_property_read_bool(np, "disable-over-current")) { 164 data->disable_oc = 1; 165 } else if (of_property_read_bool(np, "over-current-active-high")) { 166 data->oc_pol_active_low = 0; 167 data->oc_pol_configured = 1; 168 } else if (of_property_read_bool(np, "over-current-active-low")) { 169 data->oc_pol_active_low = 1; 170 data->oc_pol_configured = 1; 171 } else { 172 dev_warn(dev, "No over current polarity defined\n"); 173 } 174 175 data->pwr_pol = of_property_read_bool(np, "power-active-high"); 176 data->evdo = of_property_read_bool(np, "external-vbus-divider"); 177 178 if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) 179 data->ulpi = 1; 180 181 if (of_property_read_u32(np, "samsung,picophy-pre-emp-curr-control", 182 &data->emp_curr_control)) 183 data->emp_curr_control = -1; 184 if (of_property_read_u32(np, "samsung,picophy-dc-vol-level-adjust", 185 &data->dc_vol_level_adjust)) 186 data->dc_vol_level_adjust = -1; 187 if (of_property_read_u32(np, "fsl,picophy-rise-fall-time-adjust", 188 &data->rise_fall_time_adjust)) 189 data->rise_fall_time_adjust = -1; 190 191 return data; 192 } 193 194 /* End of common functions shared by usbmisc drivers*/ 195 static int imx_get_clks(struct device *dev) 196 { 197 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 198 int ret = 0; 199 200 data->clk_ipg = devm_clk_get(dev, "ipg"); 201 if (IS_ERR(data->clk_ipg)) { 202 /* If the platform only needs one clocks */ 203 data->clk = devm_clk_get(dev, NULL); 204 if (IS_ERR(data->clk)) { 205 ret = PTR_ERR(data->clk); 206 dev_err(dev, 207 "Failed to get clks, err=%ld,%ld\n", 208 PTR_ERR(data->clk), PTR_ERR(data->clk_ipg)); 209 return ret; 210 } 211 return ret; 212 } 213 214 data->clk_ahb = devm_clk_get(dev, "ahb"); 215 if (IS_ERR(data->clk_ahb)) { 216 ret = PTR_ERR(data->clk_ahb); 217 dev_err(dev, 218 "Failed to get ahb clock, err=%d\n", ret); 219 return ret; 220 } 221 222 data->clk_per = devm_clk_get(dev, "per"); 223 if (IS_ERR(data->clk_per)) { 224 ret = PTR_ERR(data->clk_per); 225 dev_err(dev, 226 "Failed to get per clock, err=%d\n", ret); 227 return ret; 228 } 229 230 data->need_three_clks = true; 231 return ret; 232 } 233 234 static int imx_prepare_enable_clks(struct device *dev) 235 { 236 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 237 int ret = 0; 238 239 if (data->need_three_clks) { 240 ret = clk_prepare_enable(data->clk_ipg); 241 if (ret) { 242 dev_err(dev, 243 "Failed to prepare/enable ipg clk, err=%d\n", 244 ret); 245 return ret; 246 } 247 248 ret = clk_prepare_enable(data->clk_ahb); 249 if (ret) { 250 dev_err(dev, 251 "Failed to prepare/enable ahb clk, err=%d\n", 252 ret); 253 clk_disable_unprepare(data->clk_ipg); 254 return ret; 255 } 256 257 ret = clk_prepare_enable(data->clk_per); 258 if (ret) { 259 dev_err(dev, 260 "Failed to prepare/enable per clk, err=%d\n", 261 ret); 262 clk_disable_unprepare(data->clk_ahb); 263 clk_disable_unprepare(data->clk_ipg); 264 return ret; 265 } 266 } else { 267 ret = clk_prepare_enable(data->clk); 268 if (ret) { 269 dev_err(dev, 270 "Failed to prepare/enable clk, err=%d\n", 271 ret); 272 return ret; 273 } 274 } 275 276 return ret; 277 } 278 279 static void imx_disable_unprepare_clks(struct device *dev) 280 { 281 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 282 283 if (data->need_three_clks) { 284 clk_disable_unprepare(data->clk_per); 285 clk_disable_unprepare(data->clk_ahb); 286 clk_disable_unprepare(data->clk_ipg); 287 } else { 288 clk_disable_unprepare(data->clk); 289 } 290 } 291 292 static int ci_hdrc_imx_notify_event(struct ci_hdrc *ci, unsigned int event) 293 { 294 struct device *dev = ci->dev->parent; 295 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 296 int ret = 0; 297 struct imx_usbmisc_data *mdata = data->usbmisc_data; 298 299 switch (event) { 300 case CI_HDRC_IMX_HSIC_ACTIVE_EVENT: 301 if (data->pinctrl) { 302 ret = pinctrl_select_state(data->pinctrl, 303 data->pinctrl_hsic_active); 304 if (ret) 305 dev_err(dev, 306 "hsic_active select failed, err=%d\n", 307 ret); 308 } 309 break; 310 case CI_HDRC_IMX_HSIC_SUSPEND_EVENT: 311 ret = imx_usbmisc_hsic_set_connect(mdata); 312 if (ret) 313 dev_err(dev, 314 "hsic_set_connect failed, err=%d\n", ret); 315 break; 316 case CI_HDRC_CONTROLLER_VBUS_EVENT: 317 if (ci->vbus_active) 318 ret = imx_usbmisc_charger_detection(mdata, true); 319 else 320 ret = imx_usbmisc_charger_detection(mdata, false); 321 if (ci->usb_phy) 322 schedule_work(&ci->usb_phy->chg_work); 323 break; 324 default: 325 break; 326 } 327 328 return ret; 329 } 330 331 static int ci_hdrc_imx_probe(struct platform_device *pdev) 332 { 333 struct ci_hdrc_imx_data *data; 334 struct ci_hdrc_platform_data pdata = { 335 .name = dev_name(&pdev->dev), 336 .capoffset = DEF_CAPOFFSET, 337 .flags = CI_HDRC_HAS_SHORT_PKT_LIMIT, 338 .notify_event = ci_hdrc_imx_notify_event, 339 }; 340 int ret; 341 const struct ci_hdrc_imx_platform_flag *imx_platform_flag; 342 struct device_node *np = pdev->dev.of_node; 343 struct device *dev = &pdev->dev; 344 345 imx_platform_flag = of_device_get_match_data(&pdev->dev); 346 347 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 348 if (!data) 349 return -ENOMEM; 350 351 data->plat_data = imx_platform_flag; 352 pdata.flags |= imx_platform_flag->flags; 353 platform_set_drvdata(pdev, data); 354 data->usbmisc_data = usbmisc_get_init_data(dev); 355 if (IS_ERR(data->usbmisc_data)) 356 return PTR_ERR(data->usbmisc_data); 357 358 if ((of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) 359 && data->usbmisc_data) { 360 pdata.flags |= CI_HDRC_IMX_IS_HSIC; 361 data->usbmisc_data->hsic = 1; 362 data->pinctrl = devm_pinctrl_get(dev); 363 if (PTR_ERR(data->pinctrl) == -ENODEV) 364 data->pinctrl = NULL; 365 else if (IS_ERR(data->pinctrl)) { 366 ret = dev_err_probe(dev, PTR_ERR(data->pinctrl), 367 "pinctrl get failed\n"); 368 goto err_put; 369 } 370 371 data->hsic_pad_regulator = 372 devm_regulator_get_optional(dev, "hsic"); 373 if (PTR_ERR(data->hsic_pad_regulator) == -ENODEV) { 374 /* no pad regulator is needed */ 375 data->hsic_pad_regulator = NULL; 376 } else if (IS_ERR(data->hsic_pad_regulator)) { 377 ret = dev_err_probe(dev, PTR_ERR(data->hsic_pad_regulator), 378 "Get HSIC pad regulator error\n"); 379 goto err_put; 380 } 381 382 if (data->hsic_pad_regulator) { 383 ret = regulator_enable(data->hsic_pad_regulator); 384 if (ret) { 385 dev_err(dev, 386 "Failed to enable HSIC pad regulator\n"); 387 goto err_put; 388 } 389 } 390 } 391 392 /* HSIC pinctrl handling */ 393 if (data->pinctrl) { 394 struct pinctrl_state *pinctrl_hsic_idle; 395 396 pinctrl_hsic_idle = pinctrl_lookup_state(data->pinctrl, "idle"); 397 if (IS_ERR(pinctrl_hsic_idle)) { 398 dev_err(dev, 399 "pinctrl_hsic_idle lookup failed, err=%ld\n", 400 PTR_ERR(pinctrl_hsic_idle)); 401 ret = PTR_ERR(pinctrl_hsic_idle); 402 goto err_put; 403 } 404 405 ret = pinctrl_select_state(data->pinctrl, pinctrl_hsic_idle); 406 if (ret) { 407 dev_err(dev, "hsic_idle select failed, err=%d\n", ret); 408 goto err_put; 409 } 410 411 data->pinctrl_hsic_active = pinctrl_lookup_state(data->pinctrl, 412 "active"); 413 if (IS_ERR(data->pinctrl_hsic_active)) { 414 dev_err(dev, 415 "pinctrl_hsic_active lookup failed, err=%ld\n", 416 PTR_ERR(data->pinctrl_hsic_active)); 417 ret = PTR_ERR(data->pinctrl_hsic_active); 418 goto err_put; 419 } 420 } 421 422 if (pdata.flags & CI_HDRC_PMQOS) 423 cpu_latency_qos_add_request(&data->pm_qos_req, 0); 424 425 ret = imx_get_clks(dev); 426 if (ret) 427 goto disable_hsic_regulator; 428 429 ret = imx_prepare_enable_clks(dev); 430 if (ret) 431 goto disable_hsic_regulator; 432 433 data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0); 434 if (IS_ERR(data->phy)) { 435 ret = PTR_ERR(data->phy); 436 if (ret != -ENODEV) { 437 dev_err_probe(dev, ret, "Failed to parse fsl,usbphy\n"); 438 goto err_clk; 439 } 440 data->phy = devm_usb_get_phy_by_phandle(dev, "phys", 0); 441 if (IS_ERR(data->phy)) { 442 ret = PTR_ERR(data->phy); 443 if (ret == -ENODEV) { 444 data->phy = NULL; 445 } else { 446 dev_err_probe(dev, ret, "Failed to parse phys\n"); 447 goto err_clk; 448 } 449 } 450 } 451 452 pdata.usb_phy = data->phy; 453 if (data->usbmisc_data) 454 data->usbmisc_data->usb_phy = data->phy; 455 456 if ((of_device_is_compatible(np, "fsl,imx53-usb") || 457 of_device_is_compatible(np, "fsl,imx51-usb")) && pdata.usb_phy && 458 of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) { 459 pdata.flags |= CI_HDRC_OVERRIDE_PHY_CONTROL; 460 data->override_phy_control = true; 461 usb_phy_init(pdata.usb_phy); 462 } 463 464 if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) 465 data->supports_runtime_pm = true; 466 467 ret = imx_usbmisc_init(data->usbmisc_data); 468 if (ret) { 469 dev_err(dev, "usbmisc init failed, ret=%d\n", ret); 470 goto err_clk; 471 } 472 473 data->ci_pdev = ci_hdrc_add_device(dev, 474 pdev->resource, pdev->num_resources, 475 &pdata); 476 if (IS_ERR(data->ci_pdev)) { 477 ret = PTR_ERR(data->ci_pdev); 478 dev_err_probe(dev, ret, "ci_hdrc_add_device failed\n"); 479 goto err_clk; 480 } 481 482 if (data->usbmisc_data) { 483 if (!IS_ERR(pdata.id_extcon.edev) || 484 of_property_read_bool(np, "usb-role-switch")) 485 data->usbmisc_data->ext_id = 1; 486 487 if (!IS_ERR(pdata.vbus_extcon.edev) || 488 of_property_read_bool(np, "usb-role-switch")) 489 data->usbmisc_data->ext_vbus = 1; 490 491 /* usbmisc needs to know dr mode to choose wakeup setting */ 492 data->usbmisc_data->available_role = 493 ci_hdrc_query_available_role(data->ci_pdev); 494 } 495 496 ret = imx_usbmisc_init_post(data->usbmisc_data); 497 if (ret) { 498 dev_err(dev, "usbmisc post failed, ret=%d\n", ret); 499 goto disable_device; 500 } 501 502 if (data->supports_runtime_pm) { 503 pm_runtime_set_active(dev); 504 pm_runtime_enable(dev); 505 } 506 507 device_set_wakeup_capable(dev, true); 508 509 return 0; 510 511 disable_device: 512 ci_hdrc_remove_device(data->ci_pdev); 513 err_clk: 514 imx_disable_unprepare_clks(dev); 515 disable_hsic_regulator: 516 if (data->hsic_pad_regulator) 517 /* don't overwrite original ret (cf. EPROBE_DEFER) */ 518 regulator_disable(data->hsic_pad_regulator); 519 if (pdata.flags & CI_HDRC_PMQOS) 520 cpu_latency_qos_remove_request(&data->pm_qos_req); 521 data->ci_pdev = NULL; 522 err_put: 523 put_device(data->usbmisc_data->dev); 524 return ret; 525 } 526 527 static void ci_hdrc_imx_remove(struct platform_device *pdev) 528 { 529 struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); 530 531 if (data->supports_runtime_pm) { 532 pm_runtime_get_sync(&pdev->dev); 533 pm_runtime_disable(&pdev->dev); 534 pm_runtime_put_noidle(&pdev->dev); 535 } 536 if (data->ci_pdev) 537 ci_hdrc_remove_device(data->ci_pdev); 538 if (data->override_phy_control) 539 usb_phy_shutdown(data->phy); 540 if (data->ci_pdev) { 541 imx_disable_unprepare_clks(&pdev->dev); 542 if (data->plat_data->flags & CI_HDRC_PMQOS) 543 cpu_latency_qos_remove_request(&data->pm_qos_req); 544 if (data->hsic_pad_regulator) 545 regulator_disable(data->hsic_pad_regulator); 546 } 547 put_device(data->usbmisc_data->dev); 548 } 549 550 static void ci_hdrc_imx_shutdown(struct platform_device *pdev) 551 { 552 ci_hdrc_imx_remove(pdev); 553 } 554 555 static int __maybe_unused imx_controller_suspend(struct device *dev, 556 pm_message_t msg) 557 { 558 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 559 int ret = 0; 560 561 dev_dbg(dev, "at %s\n", __func__); 562 563 ret = imx_usbmisc_suspend(data->usbmisc_data, 564 PMSG_IS_AUTO(msg) || device_may_wakeup(dev)); 565 if (ret) { 566 dev_err(dev, 567 "usbmisc suspend failed, ret=%d\n", ret); 568 return ret; 569 } 570 571 imx_disable_unprepare_clks(dev); 572 if (data->plat_data->flags & CI_HDRC_PMQOS) 573 cpu_latency_qos_remove_request(&data->pm_qos_req); 574 575 data->in_lpm = true; 576 577 return 0; 578 } 579 580 static int __maybe_unused imx_controller_resume(struct device *dev, 581 pm_message_t msg) 582 { 583 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 584 int ret = 0; 585 586 dev_dbg(dev, "at %s\n", __func__); 587 588 if (!data->in_lpm) { 589 WARN_ON(1); 590 return 0; 591 } 592 593 if (data->plat_data->flags & CI_HDRC_PMQOS) 594 cpu_latency_qos_add_request(&data->pm_qos_req, 0); 595 596 ret = imx_prepare_enable_clks(dev); 597 if (ret) 598 return ret; 599 600 data->in_lpm = false; 601 602 ret = imx_usbmisc_resume(data->usbmisc_data, 603 PMSG_IS_AUTO(msg) || device_may_wakeup(dev)); 604 if (ret) { 605 dev_err(dev, "usbmisc resume failed, ret=%d\n", ret); 606 goto clk_disable; 607 } 608 609 return 0; 610 611 clk_disable: 612 imx_disable_unprepare_clks(dev); 613 return ret; 614 } 615 616 static int __maybe_unused ci_hdrc_imx_suspend(struct device *dev) 617 { 618 int ret; 619 620 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 621 622 if (data->in_lpm) 623 /* The core's suspend doesn't run */ 624 return 0; 625 626 ret = imx_controller_suspend(dev, PMSG_SUSPEND); 627 if (ret) 628 return ret; 629 630 pinctrl_pm_select_sleep_state(dev); 631 return ret; 632 } 633 634 static int __maybe_unused ci_hdrc_imx_resume(struct device *dev) 635 { 636 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 637 int ret; 638 639 pinctrl_pm_select_default_state(dev); 640 ret = imx_controller_resume(dev, PMSG_RESUME); 641 if (!ret && data->supports_runtime_pm) { 642 pm_runtime_disable(dev); 643 pm_runtime_set_active(dev); 644 pm_runtime_enable(dev); 645 } 646 647 return ret; 648 } 649 650 static int __maybe_unused ci_hdrc_imx_runtime_suspend(struct device *dev) 651 { 652 struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); 653 654 if (data->in_lpm) { 655 WARN_ON(1); 656 return 0; 657 } 658 659 return imx_controller_suspend(dev, PMSG_AUTO_SUSPEND); 660 } 661 662 static int __maybe_unused ci_hdrc_imx_runtime_resume(struct device *dev) 663 { 664 return imx_controller_resume(dev, PMSG_AUTO_RESUME); 665 } 666 667 static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { 668 SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) 669 SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, 670 ci_hdrc_imx_runtime_resume, NULL) 671 }; 672 static struct platform_driver ci_hdrc_imx_driver = { 673 .probe = ci_hdrc_imx_probe, 674 .remove_new = ci_hdrc_imx_remove, 675 .shutdown = ci_hdrc_imx_shutdown, 676 .driver = { 677 .name = "imx_usb", 678 .of_match_table = ci_hdrc_imx_dt_ids, 679 .pm = &ci_hdrc_imx_pm_ops, 680 }, 681 }; 682 683 module_platform_driver(ci_hdrc_imx_driver); 684 685 MODULE_ALIAS("platform:imx-usb"); 686 MODULE_LICENSE("GPL"); 687 MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); 688 MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); 689 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); 690