1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * dwc3-omap.c - OMAP Specific Glue layer 4 * 5 * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com 6 * 7 * Authors: Felipe Balbi <balbi@ti.com>, 8 * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 9 */ 10 11 #include <linux/module.h> 12 #include <linux/kernel.h> 13 #include <linux/slab.h> 14 #include <linux/irq.h> 15 #include <linux/interrupt.h> 16 #include <linux/platform_device.h> 17 #include <linux/pm_runtime.h> 18 #include <linux/dma-mapping.h> 19 #include <linux/ioport.h> 20 #include <linux/io.h> 21 #include <linux/of.h> 22 #include <linux/of_platform.h> 23 #include <linux/extcon.h> 24 #include <linux/regulator/consumer.h> 25 26 #include <linux/usb/otg.h> 27 28 /* 29 * All these registers belong to OMAP's Wrapper around the 30 * DesignWare USB3 Core. 31 */ 32 33 #define USBOTGSS_REVISION 0x0000 34 #define USBOTGSS_SYSCONFIG 0x0010 35 #define USBOTGSS_IRQ_EOI 0x0020 36 #define USBOTGSS_EOI_OFFSET 0x0008 37 #define USBOTGSS_IRQSTATUS_RAW_0 0x0024 38 #define USBOTGSS_IRQSTATUS_0 0x0028 39 #define USBOTGSS_IRQENABLE_SET_0 0x002c 40 #define USBOTGSS_IRQENABLE_CLR_0 0x0030 41 #define USBOTGSS_IRQ0_OFFSET 0x0004 42 #define USBOTGSS_IRQSTATUS_RAW_1 0x0030 43 #define USBOTGSS_IRQSTATUS_1 0x0034 44 #define USBOTGSS_IRQENABLE_SET_1 0x0038 45 #define USBOTGSS_IRQENABLE_CLR_1 0x003c 46 #define USBOTGSS_IRQSTATUS_RAW_2 0x0040 47 #define USBOTGSS_IRQSTATUS_2 0x0044 48 #define USBOTGSS_IRQENABLE_SET_2 0x0048 49 #define USBOTGSS_IRQENABLE_CLR_2 0x004c 50 #define USBOTGSS_IRQSTATUS_RAW_3 0x0050 51 #define USBOTGSS_IRQSTATUS_3 0x0054 52 #define USBOTGSS_IRQENABLE_SET_3 0x0058 53 #define USBOTGSS_IRQENABLE_CLR_3 0x005c 54 #define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030 55 #define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034 56 #define USBOTGSS_IRQSTATUS_MISC 0x0038 57 #define USBOTGSS_IRQENABLE_SET_MISC 0x003c 58 #define USBOTGSS_IRQENABLE_CLR_MISC 0x0040 59 #define USBOTGSS_IRQMISC_OFFSET 0x03fc 60 #define USBOTGSS_UTMI_OTG_STATUS 0x0080 61 #define USBOTGSS_UTMI_OTG_CTRL 0x0084 62 #define USBOTGSS_UTMI_OTG_OFFSET 0x0480 63 #define USBOTGSS_TXFIFO_DEPTH 0x0508 64 #define USBOTGSS_RXFIFO_DEPTH 0x050c 65 #define USBOTGSS_MMRAM_OFFSET 0x0100 66 #define USBOTGSS_FLADJ 0x0104 67 #define USBOTGSS_DEBUG_CFG 0x0108 68 #define USBOTGSS_DEBUG_DATA 0x010c 69 #define USBOTGSS_DEV_EBC_EN 0x0110 70 #define USBOTGSS_DEBUG_OFFSET 0x0600 71 72 /* SYSCONFIG REGISTER */ 73 #define USBOTGSS_SYSCONFIG_DMADISABLE BIT(16) 74 75 /* IRQ_EOI REGISTER */ 76 #define USBOTGSS_IRQ_EOI_LINE_NUMBER BIT(0) 77 78 /* IRQS0 BITS */ 79 #define USBOTGSS_IRQO_COREIRQ_ST BIT(0) 80 81 /* IRQMISC BITS */ 82 #define USBOTGSS_IRQMISC_DMADISABLECLR BIT(17) 83 #define USBOTGSS_IRQMISC_OEVT BIT(16) 84 #define USBOTGSS_IRQMISC_DRVVBUS_RISE BIT(13) 85 #define USBOTGSS_IRQMISC_CHRGVBUS_RISE BIT(12) 86 #define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE BIT(11) 87 #define USBOTGSS_IRQMISC_IDPULLUP_RISE BIT(8) 88 #define USBOTGSS_IRQMISC_DRVVBUS_FALL BIT(5) 89 #define USBOTGSS_IRQMISC_CHRGVBUS_FALL BIT(4) 90 #define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL BIT(3) 91 #define USBOTGSS_IRQMISC_IDPULLUP_FALL BIT(0) 92 93 /* UTMI_OTG_STATUS REGISTER */ 94 #define USBOTGSS_UTMI_OTG_STATUS_DRVVBUS BIT(5) 95 #define USBOTGSS_UTMI_OTG_STATUS_CHRGVBUS BIT(4) 96 #define USBOTGSS_UTMI_OTG_STATUS_DISCHRGVBUS BIT(3) 97 #define USBOTGSS_UTMI_OTG_STATUS_IDPULLUP BIT(0) 98 99 /* UTMI_OTG_CTRL REGISTER */ 100 #define USBOTGSS_UTMI_OTG_CTRL_SW_MODE BIT(31) 101 #define USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT BIT(9) 102 #define USBOTGSS_UTMI_OTG_CTRL_TXBITSTUFFENABLE BIT(8) 103 #define USBOTGSS_UTMI_OTG_CTRL_IDDIG BIT(4) 104 #define USBOTGSS_UTMI_OTG_CTRL_SESSEND BIT(3) 105 #define USBOTGSS_UTMI_OTG_CTRL_SESSVALID BIT(2) 106 #define USBOTGSS_UTMI_OTG_CTRL_VBUSVALID BIT(1) 107 108 enum dwc3_omap_utmi_mode { 109 DWC3_OMAP_UTMI_MODE_UNKNOWN = 0, 110 DWC3_OMAP_UTMI_MODE_HW, 111 DWC3_OMAP_UTMI_MODE_SW, 112 }; 113 114 struct dwc3_omap { 115 struct device *dev; 116 117 int irq; 118 void __iomem *base; 119 120 u32 utmi_otg_ctrl; 121 u32 utmi_otg_offset; 122 u32 irqmisc_offset; 123 u32 irq_eoi_offset; 124 u32 debug_offset; 125 u32 irq0_offset; 126 127 struct extcon_dev *edev; 128 struct notifier_block vbus_nb; 129 struct notifier_block id_nb; 130 131 struct regulator *vbus_reg; 132 }; 133 134 enum omap_dwc3_vbus_id_status { 135 OMAP_DWC3_ID_FLOAT, 136 OMAP_DWC3_ID_GROUND, 137 OMAP_DWC3_VBUS_OFF, 138 OMAP_DWC3_VBUS_VALID, 139 }; 140 141 static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset) 142 { 143 return readl(base + offset); 144 } 145 146 static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) 147 { 148 writel(value, base + offset); 149 } 150 151 static u32 dwc3_omap_read_utmi_ctrl(struct dwc3_omap *omap) 152 { 153 return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_CTRL + 154 omap->utmi_otg_offset); 155 } 156 157 static void dwc3_omap_write_utmi_ctrl(struct dwc3_omap *omap, u32 value) 158 { 159 dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_CTRL + 160 omap->utmi_otg_offset, value); 161 162 } 163 164 static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap) 165 { 166 return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_RAW_0 - 167 omap->irq0_offset); 168 } 169 170 static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value) 171 { 172 dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 - 173 omap->irq0_offset, value); 174 175 } 176 177 static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap) 178 { 179 return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_RAW_MISC + 180 omap->irqmisc_offset); 181 } 182 183 static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value) 184 { 185 dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC + 186 omap->irqmisc_offset, value); 187 188 } 189 190 static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value) 191 { 192 dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC + 193 omap->irqmisc_offset, value); 194 195 } 196 197 static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value) 198 { 199 dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 - 200 omap->irq0_offset, value); 201 } 202 203 static void dwc3_omap_write_irqmisc_clr(struct dwc3_omap *omap, u32 value) 204 { 205 dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_MISC + 206 omap->irqmisc_offset, value); 207 } 208 209 static void dwc3_omap_write_irq0_clr(struct dwc3_omap *omap, u32 value) 210 { 211 dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_0 - 212 omap->irq0_offset, value); 213 } 214 215 static void dwc3_omap_set_mailbox(struct dwc3_omap *omap, 216 enum omap_dwc3_vbus_id_status status) 217 { 218 int ret; 219 u32 val; 220 221 switch (status) { 222 case OMAP_DWC3_ID_GROUND: 223 if (omap->vbus_reg) { 224 ret = regulator_enable(omap->vbus_reg); 225 if (ret) { 226 dev_err(omap->dev, "regulator enable failed\n"); 227 return; 228 } 229 } 230 231 val = dwc3_omap_read_utmi_ctrl(omap); 232 val &= ~USBOTGSS_UTMI_OTG_CTRL_IDDIG; 233 dwc3_omap_write_utmi_ctrl(omap, val); 234 break; 235 236 case OMAP_DWC3_VBUS_VALID: 237 val = dwc3_omap_read_utmi_ctrl(omap); 238 val &= ~USBOTGSS_UTMI_OTG_CTRL_SESSEND; 239 val |= USBOTGSS_UTMI_OTG_CTRL_VBUSVALID 240 | USBOTGSS_UTMI_OTG_CTRL_SESSVALID; 241 dwc3_omap_write_utmi_ctrl(omap, val); 242 break; 243 244 case OMAP_DWC3_ID_FLOAT: 245 if (omap->vbus_reg && regulator_is_enabled(omap->vbus_reg)) 246 regulator_disable(omap->vbus_reg); 247 val = dwc3_omap_read_utmi_ctrl(omap); 248 val |= USBOTGSS_UTMI_OTG_CTRL_IDDIG; 249 dwc3_omap_write_utmi_ctrl(omap, val); 250 break; 251 252 case OMAP_DWC3_VBUS_OFF: 253 val = dwc3_omap_read_utmi_ctrl(omap); 254 val &= ~(USBOTGSS_UTMI_OTG_CTRL_SESSVALID 255 | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID); 256 val |= USBOTGSS_UTMI_OTG_CTRL_SESSEND; 257 dwc3_omap_write_utmi_ctrl(omap, val); 258 break; 259 260 default: 261 dev_WARN(omap->dev, "invalid state\n"); 262 } 263 } 264 265 static void dwc3_omap_enable_irqs(struct dwc3_omap *omap); 266 static void dwc3_omap_disable_irqs(struct dwc3_omap *omap); 267 268 static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) 269 { 270 struct dwc3_omap *omap = _omap; 271 272 if (dwc3_omap_read_irqmisc_status(omap) || 273 dwc3_omap_read_irq0_status(omap)) { 274 /* mask irqs */ 275 dwc3_omap_disable_irqs(omap); 276 return IRQ_WAKE_THREAD; 277 } 278 279 return IRQ_NONE; 280 } 281 282 static irqreturn_t dwc3_omap_interrupt_thread(int irq, void *_omap) 283 { 284 struct dwc3_omap *omap = _omap; 285 u32 reg; 286 287 /* clear irq status flags */ 288 reg = dwc3_omap_read_irqmisc_status(omap); 289 dwc3_omap_write_irqmisc_status(omap, reg); 290 291 reg = dwc3_omap_read_irq0_status(omap); 292 dwc3_omap_write_irq0_status(omap, reg); 293 294 /* unmask irqs */ 295 dwc3_omap_enable_irqs(omap); 296 297 return IRQ_HANDLED; 298 } 299 300 static void dwc3_omap_enable_irqs(struct dwc3_omap *omap) 301 { 302 u32 reg; 303 304 /* enable all IRQs */ 305 reg = USBOTGSS_IRQO_COREIRQ_ST; 306 dwc3_omap_write_irq0_set(omap, reg); 307 308 reg = (USBOTGSS_IRQMISC_OEVT | 309 USBOTGSS_IRQMISC_DRVVBUS_RISE | 310 USBOTGSS_IRQMISC_CHRGVBUS_RISE | 311 USBOTGSS_IRQMISC_DISCHRGVBUS_RISE | 312 USBOTGSS_IRQMISC_IDPULLUP_RISE | 313 USBOTGSS_IRQMISC_DRVVBUS_FALL | 314 USBOTGSS_IRQMISC_CHRGVBUS_FALL | 315 USBOTGSS_IRQMISC_DISCHRGVBUS_FALL | 316 USBOTGSS_IRQMISC_IDPULLUP_FALL); 317 318 dwc3_omap_write_irqmisc_set(omap, reg); 319 } 320 321 static void dwc3_omap_disable_irqs(struct dwc3_omap *omap) 322 { 323 u32 reg; 324 325 /* disable all IRQs */ 326 reg = USBOTGSS_IRQO_COREIRQ_ST; 327 dwc3_omap_write_irq0_clr(omap, reg); 328 329 reg = (USBOTGSS_IRQMISC_OEVT | 330 USBOTGSS_IRQMISC_DRVVBUS_RISE | 331 USBOTGSS_IRQMISC_CHRGVBUS_RISE | 332 USBOTGSS_IRQMISC_DISCHRGVBUS_RISE | 333 USBOTGSS_IRQMISC_IDPULLUP_RISE | 334 USBOTGSS_IRQMISC_DRVVBUS_FALL | 335 USBOTGSS_IRQMISC_CHRGVBUS_FALL | 336 USBOTGSS_IRQMISC_DISCHRGVBUS_FALL | 337 USBOTGSS_IRQMISC_IDPULLUP_FALL); 338 339 dwc3_omap_write_irqmisc_clr(omap, reg); 340 } 341 342 static int dwc3_omap_id_notifier(struct notifier_block *nb, 343 unsigned long event, void *ptr) 344 { 345 struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, id_nb); 346 347 if (event) 348 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); 349 else 350 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT); 351 352 return NOTIFY_DONE; 353 } 354 355 static int dwc3_omap_vbus_notifier(struct notifier_block *nb, 356 unsigned long event, void *ptr) 357 { 358 struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, vbus_nb); 359 360 if (event) 361 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); 362 else 363 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF); 364 365 return NOTIFY_DONE; 366 } 367 368 static void dwc3_omap_map_offset(struct dwc3_omap *omap) 369 { 370 struct device_node *node = omap->dev->of_node; 371 372 /* 373 * Differentiate between OMAP5 and AM437x. 374 * 375 * For OMAP5(ES2.0) and AM437x wrapper revision is same, even 376 * though there are changes in wrapper register offsets. 377 * 378 * Using dt compatible to differentiate AM437x. 379 */ 380 if (of_device_is_compatible(node, "ti,am437x-dwc3")) { 381 omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; 382 omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; 383 omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; 384 omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; 385 omap->debug_offset = USBOTGSS_DEBUG_OFFSET; 386 } 387 } 388 389 static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap) 390 { 391 u32 reg; 392 struct device_node *node = omap->dev->of_node; 393 u32 utmi_mode = 0; 394 395 reg = dwc3_omap_read_utmi_ctrl(omap); 396 397 of_property_read_u32(node, "utmi-mode", &utmi_mode); 398 399 switch (utmi_mode) { 400 case DWC3_OMAP_UTMI_MODE_SW: 401 reg |= USBOTGSS_UTMI_OTG_CTRL_SW_MODE; 402 break; 403 case DWC3_OMAP_UTMI_MODE_HW: 404 reg &= ~USBOTGSS_UTMI_OTG_CTRL_SW_MODE; 405 break; 406 default: 407 dev_WARN(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode); 408 } 409 410 dwc3_omap_write_utmi_ctrl(omap, reg); 411 } 412 413 static int dwc3_omap_extcon_register(struct dwc3_omap *omap) 414 { 415 int ret; 416 struct device_node *node = omap->dev->of_node; 417 struct extcon_dev *edev; 418 419 if (of_property_read_bool(node, "extcon")) { 420 edev = extcon_get_edev_by_phandle(omap->dev, 0); 421 if (IS_ERR(edev)) { 422 dev_vdbg(omap->dev, "couldn't get extcon device\n"); 423 return -EPROBE_DEFER; 424 } 425 426 omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier; 427 ret = devm_extcon_register_notifier(omap->dev, edev, 428 EXTCON_USB, &omap->vbus_nb); 429 if (ret < 0) 430 dev_vdbg(omap->dev, "failed to register notifier for USB\n"); 431 432 omap->id_nb.notifier_call = dwc3_omap_id_notifier; 433 ret = devm_extcon_register_notifier(omap->dev, edev, 434 EXTCON_USB_HOST, &omap->id_nb); 435 if (ret < 0) 436 dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n"); 437 438 if (extcon_get_state(edev, EXTCON_USB) == true) 439 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); 440 else 441 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF); 442 443 if (extcon_get_state(edev, EXTCON_USB_HOST) == true) 444 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); 445 else 446 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT); 447 448 omap->edev = edev; 449 } 450 451 return 0; 452 } 453 454 static int dwc3_omap_probe(struct platform_device *pdev) 455 { 456 struct device_node *node = pdev->dev.of_node; 457 458 struct dwc3_omap *omap; 459 struct device *dev = &pdev->dev; 460 struct regulator *vbus_reg = NULL; 461 462 int ret; 463 int irq; 464 465 void __iomem *base; 466 467 if (!node) { 468 dev_err(dev, "device node not found\n"); 469 return -EINVAL; 470 } 471 472 omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL); 473 if (!omap) 474 return -ENOMEM; 475 476 platform_set_drvdata(pdev, omap); 477 478 irq = platform_get_irq(pdev, 0); 479 if (irq < 0) 480 return irq; 481 482 base = devm_platform_ioremap_resource(pdev, 0); 483 if (IS_ERR(base)) 484 return PTR_ERR(base); 485 486 if (of_property_read_bool(node, "vbus-supply")) { 487 vbus_reg = devm_regulator_get(dev, "vbus"); 488 if (IS_ERR(vbus_reg)) { 489 dev_err(dev, "vbus init failed\n"); 490 return PTR_ERR(vbus_reg); 491 } 492 } 493 494 omap->dev = dev; 495 omap->irq = irq; 496 omap->base = base; 497 omap->vbus_reg = vbus_reg; 498 499 pm_runtime_enable(dev); 500 ret = pm_runtime_get_sync(dev); 501 if (ret < 0) { 502 dev_err(dev, "get_sync failed with err %d\n", ret); 503 goto err1; 504 } 505 506 dwc3_omap_map_offset(omap); 507 dwc3_omap_set_utmi_mode(omap); 508 509 ret = dwc3_omap_extcon_register(omap); 510 if (ret < 0) 511 goto err1; 512 513 ret = of_platform_populate(node, NULL, NULL, dev); 514 if (ret) { 515 dev_err(&pdev->dev, "failed to create dwc3 core\n"); 516 goto err1; 517 } 518 519 ret = devm_request_threaded_irq(dev, omap->irq, dwc3_omap_interrupt, 520 dwc3_omap_interrupt_thread, IRQF_SHARED, 521 "dwc3-omap", omap); 522 if (ret) { 523 dev_err(dev, "failed to request IRQ #%d --> %d\n", 524 omap->irq, ret); 525 goto err1; 526 } 527 dwc3_omap_enable_irqs(omap); 528 return 0; 529 530 err1: 531 pm_runtime_put_sync(dev); 532 pm_runtime_disable(dev); 533 534 return ret; 535 } 536 537 static int dwc3_omap_remove(struct platform_device *pdev) 538 { 539 struct dwc3_omap *omap = platform_get_drvdata(pdev); 540 541 dwc3_omap_disable_irqs(omap); 542 disable_irq(omap->irq); 543 of_platform_depopulate(omap->dev); 544 pm_runtime_put_sync(&pdev->dev); 545 pm_runtime_disable(&pdev->dev); 546 547 return 0; 548 } 549 550 static const struct of_device_id of_dwc3_match[] = { 551 { 552 .compatible = "ti,dwc3" 553 }, 554 { 555 .compatible = "ti,am437x-dwc3" 556 }, 557 { }, 558 }; 559 MODULE_DEVICE_TABLE(of, of_dwc3_match); 560 561 #ifdef CONFIG_PM_SLEEP 562 static int dwc3_omap_suspend(struct device *dev) 563 { 564 struct dwc3_omap *omap = dev_get_drvdata(dev); 565 566 omap->utmi_otg_ctrl = dwc3_omap_read_utmi_ctrl(omap); 567 dwc3_omap_disable_irqs(omap); 568 569 return 0; 570 } 571 572 static int dwc3_omap_resume(struct device *dev) 573 { 574 struct dwc3_omap *omap = dev_get_drvdata(dev); 575 576 dwc3_omap_write_utmi_ctrl(omap, omap->utmi_otg_ctrl); 577 dwc3_omap_enable_irqs(omap); 578 579 pm_runtime_disable(dev); 580 pm_runtime_set_active(dev); 581 pm_runtime_enable(dev); 582 583 return 0; 584 } 585 586 static void dwc3_omap_complete(struct device *dev) 587 { 588 struct dwc3_omap *omap = dev_get_drvdata(dev); 589 590 if (extcon_get_state(omap->edev, EXTCON_USB)) 591 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); 592 else 593 dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF); 594 595 if (extcon_get_state(omap->edev, EXTCON_USB_HOST)) 596 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); 597 else 598 dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT); 599 } 600 601 static const struct dev_pm_ops dwc3_omap_dev_pm_ops = { 602 603 SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume) 604 .complete = dwc3_omap_complete, 605 }; 606 607 #define DEV_PM_OPS (&dwc3_omap_dev_pm_ops) 608 #else 609 #define DEV_PM_OPS NULL 610 #endif /* CONFIG_PM_SLEEP */ 611 612 static struct platform_driver dwc3_omap_driver = { 613 .probe = dwc3_omap_probe, 614 .remove = dwc3_omap_remove, 615 .driver = { 616 .name = "omap-dwc3", 617 .of_match_table = of_dwc3_match, 618 .pm = DEV_PM_OPS, 619 }, 620 }; 621 622 module_platform_driver(dwc3_omap_driver); 623 624 MODULE_ALIAS("platform:omap-dwc3"); 625 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 626 MODULE_LICENSE("GPL v2"); 627 MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer"); 628