1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Motorola Mapphone MDM6600 modem GPIO controlled USB PHY driver 4 * Copyright (C) 2018 Tony Lindgren <tony@atomide.com> 5 */ 6 7 #include <linux/delay.h> 8 #include <linux/err.h> 9 #include <linux/io.h> 10 #include <linux/interrupt.h> 11 #include <linux/module.h> 12 #include <linux/of.h> 13 #include <linux/platform_device.h> 14 #include <linux/slab.h> 15 16 #include <linux/gpio/consumer.h> 17 #include <linux/of_platform.h> 18 #include <linux/phy/phy.h> 19 20 #define PHY_MDM6600_PHY_DELAY_MS 4000 /* PHY enable 2.2s to 3.5s */ 21 #define PHY_MDM6600_ENABLED_DELAY_MS 8000 /* 8s more total for MDM6600 */ 22 #define MDM6600_MODEM_IDLE_DELAY_MS 1000 /* modem after USB suspend */ 23 #define MDM6600_MODEM_WAKE_DELAY_MS 200 /* modem response after idle */ 24 25 enum phy_mdm6600_ctrl_lines { 26 PHY_MDM6600_ENABLE, /* USB PHY enable */ 27 PHY_MDM6600_POWER, /* Device power */ 28 PHY_MDM6600_RESET, /* Device reset */ 29 PHY_MDM6600_NR_CTRL_LINES, 30 }; 31 32 enum phy_mdm6600_bootmode_lines { 33 PHY_MDM6600_MODE0, /* out USB mode0 and OOB wake */ 34 PHY_MDM6600_MODE1, /* out USB mode1, in OOB wake */ 35 PHY_MDM6600_NR_MODE_LINES, 36 }; 37 38 enum phy_mdm6600_cmd_lines { 39 PHY_MDM6600_CMD0, 40 PHY_MDM6600_CMD1, 41 PHY_MDM6600_CMD2, 42 PHY_MDM6600_NR_CMD_LINES, 43 }; 44 45 enum phy_mdm6600_status_lines { 46 PHY_MDM6600_STATUS0, 47 PHY_MDM6600_STATUS1, 48 PHY_MDM6600_STATUS2, 49 PHY_MDM6600_NR_STATUS_LINES, 50 }; 51 52 /* 53 * MDM6600 command codes. These are based on Motorola Mapphone Linux 54 * kernel tree. 55 */ 56 enum phy_mdm6600_cmd { 57 PHY_MDM6600_CMD_BP_PANIC_ACK, 58 PHY_MDM6600_CMD_DATA_ONLY_BYPASS, /* Reroute USB to CPCAP PHY */ 59 PHY_MDM6600_CMD_FULL_BYPASS, /* Reroute USB to CPCAP PHY */ 60 PHY_MDM6600_CMD_NO_BYPASS, /* Request normal USB mode */ 61 PHY_MDM6600_CMD_BP_SHUTDOWN_REQ, /* Request device power off */ 62 PHY_MDM6600_CMD_BP_UNKNOWN_5, 63 PHY_MDM6600_CMD_BP_UNKNOWN_6, 64 PHY_MDM6600_CMD_UNDEFINED, 65 }; 66 67 /* 68 * MDM6600 status codes. These are based on Motorola Mapphone Linux 69 * kernel tree. 70 */ 71 enum phy_mdm6600_status { 72 PHY_MDM6600_STATUS_PANIC, /* Seems to be really off */ 73 PHY_MDM6600_STATUS_PANIC_BUSY_WAIT, 74 PHY_MDM6600_STATUS_QC_DLOAD, 75 PHY_MDM6600_STATUS_RAM_DOWNLOADER, /* MDM6600 USB flashing mode */ 76 PHY_MDM6600_STATUS_PHONE_CODE_AWAKE, /* MDM6600 normal USB mode */ 77 PHY_MDM6600_STATUS_PHONE_CODE_ASLEEP, 78 PHY_MDM6600_STATUS_SHUTDOWN_ACK, 79 PHY_MDM6600_STATUS_UNDEFINED, 80 }; 81 82 static const char * const 83 phy_mdm6600_status_name[] = { 84 "off", "busy", "qc_dl", "ram_dl", "awake", 85 "asleep", "shutdown", "undefined", 86 }; 87 88 struct phy_mdm6600 { 89 struct device *dev; 90 struct phy *generic_phy; 91 struct phy_provider *phy_provider; 92 struct gpio_desc *ctrl_gpios[PHY_MDM6600_NR_CTRL_LINES]; 93 struct gpio_descs *mode_gpios; 94 struct gpio_descs *status_gpios; 95 struct gpio_descs *cmd_gpios; 96 struct delayed_work bootup_work; 97 struct delayed_work status_work; 98 struct delayed_work modem_wake_work; 99 struct completion ack; 100 bool enabled; /* mdm6600 phy enabled */ 101 bool running; /* mdm6600 boot done */ 102 bool awake; /* mdm6600 respnds on n_gsm */ 103 int status; 104 }; 105 106 static int phy_mdm6600_init(struct phy *x) 107 { 108 struct phy_mdm6600 *ddata = phy_get_drvdata(x); 109 struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; 110 111 if (!ddata->enabled) 112 return -EPROBE_DEFER; 113 114 gpiod_set_value_cansleep(enable_gpio, 0); 115 116 return 0; 117 } 118 119 static int phy_mdm6600_power_on(struct phy *x) 120 { 121 struct phy_mdm6600 *ddata = phy_get_drvdata(x); 122 struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; 123 124 if (!ddata->enabled) 125 return -ENODEV; 126 127 gpiod_set_value_cansleep(enable_gpio, 1); 128 129 return 0; 130 } 131 132 static int phy_mdm6600_power_off(struct phy *x) 133 { 134 struct phy_mdm6600 *ddata = phy_get_drvdata(x); 135 struct gpio_desc *enable_gpio = ddata->ctrl_gpios[PHY_MDM6600_ENABLE]; 136 137 if (!ddata->enabled) 138 return -ENODEV; 139 140 gpiod_set_value_cansleep(enable_gpio, 0); 141 142 return 0; 143 } 144 145 static const struct phy_ops gpio_usb_ops = { 146 .init = phy_mdm6600_init, 147 .power_on = phy_mdm6600_power_on, 148 .power_off = phy_mdm6600_power_off, 149 .owner = THIS_MODULE, 150 }; 151 152 /** 153 * phy_mdm6600_cmd() - send a command request to mdm6600 154 * @ddata: device driver data 155 * 156 * Configures the three command request GPIOs to the specified value. 157 */ 158 static void phy_mdm6600_cmd(struct phy_mdm6600 *ddata, int val) 159 { 160 int values[PHY_MDM6600_NR_CMD_LINES]; 161 int i; 162 163 val &= (1 << PHY_MDM6600_NR_CMD_LINES) - 1; 164 for (i = 0; i < PHY_MDM6600_NR_CMD_LINES; i++) 165 values[i] = (val & BIT(i)) >> i; 166 167 gpiod_set_array_value_cansleep(PHY_MDM6600_NR_CMD_LINES, 168 ddata->cmd_gpios->desc, values); 169 } 170 171 /** 172 * phy_mdm6600_status() - read mdm6600 status lines 173 * @ddata: device driver data 174 */ 175 static void phy_mdm6600_status(struct work_struct *work) 176 { 177 struct phy_mdm6600 *ddata; 178 struct device *dev; 179 int values[PHY_MDM6600_NR_STATUS_LINES]; 180 int error, i, val = 0; 181 182 ddata = container_of(work, struct phy_mdm6600, status_work.work); 183 dev = ddata->dev; 184 185 error = gpiod_get_array_value_cansleep(PHY_MDM6600_NR_CMD_LINES, 186 ddata->status_gpios->desc, 187 values); 188 if (error) 189 return; 190 191 for (i = 0; i < PHY_MDM6600_NR_CMD_LINES; i++) { 192 val |= values[i] << i; 193 dev_dbg(ddata->dev, "XXX %s: i: %i values[i]: %i val: %i\n", 194 __func__, i, values[i], val); 195 } 196 ddata->status = val; 197 198 dev_info(dev, "modem status: %i %s\n", 199 ddata->status, 200 phy_mdm6600_status_name[ddata->status & 7]); 201 complete(&ddata->ack); 202 } 203 204 static irqreturn_t phy_mdm6600_irq_thread(int irq, void *data) 205 { 206 struct phy_mdm6600 *ddata = data; 207 208 schedule_delayed_work(&ddata->status_work, msecs_to_jiffies(10)); 209 210 return IRQ_HANDLED; 211 } 212 213 /** 214 * phy_mdm6600_wakeirq_thread - handle mode1 line OOB wake after booting 215 * @irq: interrupt 216 * @data: interrupt handler data 217 * 218 * GPIO mode1 is used initially as output to configure the USB boot 219 * mode for mdm6600. After booting it is used as input for OOB wake 220 * signal from mdm6600 to the SoC. Just use it for debug info only 221 * for now. 222 */ 223 static irqreturn_t phy_mdm6600_wakeirq_thread(int irq, void *data) 224 { 225 struct phy_mdm6600 *ddata = data; 226 struct gpio_desc *mode_gpio1; 227 228 mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1]; 229 dev_dbg(ddata->dev, "OOB wake on mode_gpio1: %i\n", 230 gpiod_get_value(mode_gpio1)); 231 232 return IRQ_HANDLED; 233 } 234 235 /** 236 * phy_mdm6600_init_irq() - initialize mdm6600 status IRQ lines 237 * @ddata: device driver data 238 */ 239 static void phy_mdm6600_init_irq(struct phy_mdm6600 *ddata) 240 { 241 struct device *dev = ddata->dev; 242 int i, error, irq; 243 244 for (i = PHY_MDM6600_STATUS0; 245 i <= PHY_MDM6600_STATUS2; i++) { 246 struct gpio_desc *gpio = ddata->status_gpios->desc[i]; 247 248 irq = gpiod_to_irq(gpio); 249 if (irq <= 0) 250 continue; 251 252 error = devm_request_threaded_irq(dev, irq, NULL, 253 phy_mdm6600_irq_thread, 254 IRQF_TRIGGER_RISING | 255 IRQF_TRIGGER_FALLING | 256 IRQF_ONESHOT, 257 "mdm6600", 258 ddata); 259 if (error) 260 dev_warn(dev, "no modem status irq%i: %i\n", 261 irq, error); 262 } 263 } 264 265 struct phy_mdm6600_map { 266 const char *name; 267 int direction; 268 }; 269 270 static const struct phy_mdm6600_map 271 phy_mdm6600_ctrl_gpio_map[PHY_MDM6600_NR_CTRL_LINES] = { 272 { "enable", GPIOD_OUT_LOW, }, /* low = phy disabled */ 273 { "power", GPIOD_OUT_LOW, }, /* low = off */ 274 { "reset", GPIOD_OUT_HIGH, }, /* high = reset */ 275 }; 276 277 /** 278 * phy_mdm6600_init_lines() - initialize mdm6600 GPIO lines 279 * @ddata: device driver data 280 */ 281 static int phy_mdm6600_init_lines(struct phy_mdm6600 *ddata) 282 { 283 struct device *dev = ddata->dev; 284 int i; 285 286 /* MDM6600 control lines */ 287 for (i = 0; i < ARRAY_SIZE(phy_mdm6600_ctrl_gpio_map); i++) { 288 const struct phy_mdm6600_map *map = 289 &phy_mdm6600_ctrl_gpio_map[i]; 290 struct gpio_desc **gpio = &ddata->ctrl_gpios[i]; 291 292 *gpio = devm_gpiod_get(dev, map->name, map->direction); 293 if (IS_ERR(*gpio)) { 294 dev_info(dev, "gpio %s error %li\n", 295 map->name, PTR_ERR(*gpio)); 296 return PTR_ERR(*gpio); 297 } 298 } 299 300 /* MDM6600 USB start-up mode output lines */ 301 ddata->mode_gpios = devm_gpiod_get_array(dev, "motorola,mode", 302 GPIOD_OUT_LOW); 303 if (IS_ERR(ddata->mode_gpios)) 304 return PTR_ERR(ddata->mode_gpios); 305 306 if (ddata->mode_gpios->ndescs != PHY_MDM6600_NR_MODE_LINES) 307 return -EINVAL; 308 309 /* MDM6600 status input lines */ 310 ddata->status_gpios = devm_gpiod_get_array(dev, "motorola,status", 311 GPIOD_IN); 312 if (IS_ERR(ddata->status_gpios)) 313 return PTR_ERR(ddata->status_gpios); 314 315 if (ddata->status_gpios->ndescs != PHY_MDM6600_NR_STATUS_LINES) 316 return -EINVAL; 317 318 /* MDM6600 cmd output lines */ 319 ddata->cmd_gpios = devm_gpiod_get_array(dev, "motorola,cmd", 320 GPIOD_OUT_LOW); 321 if (IS_ERR(ddata->cmd_gpios)) 322 return PTR_ERR(ddata->cmd_gpios); 323 324 if (ddata->cmd_gpios->ndescs != PHY_MDM6600_NR_CMD_LINES) 325 return -EINVAL; 326 327 return 0; 328 } 329 330 /** 331 * phy_mdm6600_device_power_on() - power on mdm6600 device 332 * @ddata: device driver data 333 * 334 * To get the integrated USB phy in MDM6600 takes some hoops. We must ensure 335 * the shared USB bootmode GPIOs are configured, then request modem start-up, 336 * reset and power-up.. And then we need to recycle the shared USB bootmode 337 * GPIOs as they are also used for Out of Band (OOB) wake for the USB and 338 * TS 27.010 serial mux. 339 */ 340 static int phy_mdm6600_device_power_on(struct phy_mdm6600 *ddata) 341 { 342 struct gpio_desc *mode_gpio0, *mode_gpio1, *reset_gpio, *power_gpio; 343 int error = 0, wakeirq; 344 345 mode_gpio0 = ddata->mode_gpios->desc[PHY_MDM6600_MODE0]; 346 mode_gpio1 = ddata->mode_gpios->desc[PHY_MDM6600_MODE1]; 347 reset_gpio = ddata->ctrl_gpios[PHY_MDM6600_RESET]; 348 power_gpio = ddata->ctrl_gpios[PHY_MDM6600_POWER]; 349 350 /* 351 * Shared GPIOs must be low for normal USB mode. After booting 352 * they are used for OOB wake signaling. These can be also used 353 * to configure USB flashing mode later on based on a module 354 * parameter. 355 */ 356 gpiod_set_value_cansleep(mode_gpio0, 0); 357 gpiod_set_value_cansleep(mode_gpio1, 0); 358 359 /* Request start-up mode */ 360 phy_mdm6600_cmd(ddata, PHY_MDM6600_CMD_NO_BYPASS); 361 362 /* Request a reset first */ 363 gpiod_set_value_cansleep(reset_gpio, 0); 364 msleep(100); 365 366 /* Toggle power GPIO to request mdm6600 to start */ 367 gpiod_set_value_cansleep(power_gpio, 1); 368 msleep(100); 369 gpiod_set_value_cansleep(power_gpio, 0); 370 371 /* 372 * Looks like the USB PHY needs between 2.2 to 4 seconds. 373 * If we try to use it before that, we will get L3 errors 374 * from omap-usb-host trying to access the PHY. See also 375 * phy_mdm6600_init() for -EPROBE_DEFER. 376 */ 377 msleep(PHY_MDM6600_PHY_DELAY_MS); 378 ddata->enabled = true; 379 380 /* Booting up the rest of MDM6600 will take total about 8 seconds */ 381 dev_info(ddata->dev, "Waiting for power up request to complete..\n"); 382 if (wait_for_completion_timeout(&ddata->ack, 383 msecs_to_jiffies(PHY_MDM6600_ENABLED_DELAY_MS))) { 384 if (ddata->status > PHY_MDM6600_STATUS_PANIC && 385 ddata->status < PHY_MDM6600_STATUS_SHUTDOWN_ACK) 386 dev_info(ddata->dev, "Powered up OK\n"); 387 } else { 388 ddata->enabled = false; 389 error = -ETIMEDOUT; 390 dev_err(ddata->dev, "Timed out powering up\n"); 391 } 392 393 /* Reconfigure mode1 GPIO as input for OOB wake */ 394 gpiod_direction_input(mode_gpio1); 395 396 wakeirq = gpiod_to_irq(mode_gpio1); 397 if (wakeirq <= 0) 398 return wakeirq; 399 400 error = devm_request_threaded_irq(ddata->dev, wakeirq, NULL, 401 phy_mdm6600_wakeirq_thread, 402 IRQF_TRIGGER_RISING | 403 IRQF_TRIGGER_FALLING | 404 IRQF_ONESHOT, 405 "mdm6600-wake", 406 ddata); 407 if (error) 408 dev_warn(ddata->dev, "no modem wakeirq irq%i: %i\n", 409 wakeirq, error); 410 411 ddata->running = true; 412 413 return error; 414 } 415 416 /** 417 * phy_mdm6600_device_power_off() - power off mdm6600 device 418 * @ddata: device driver data 419 */ 420 static void phy_mdm6600_device_power_off(struct phy_mdm6600 *ddata) 421 { 422 struct gpio_desc *reset_gpio = 423 ddata->ctrl_gpios[PHY_MDM6600_RESET]; 424 425 ddata->enabled = false; 426 phy_mdm6600_cmd(ddata, PHY_MDM6600_CMD_BP_SHUTDOWN_REQ); 427 msleep(100); 428 429 gpiod_set_value_cansleep(reset_gpio, 1); 430 431 dev_info(ddata->dev, "Waiting for power down request to complete.. "); 432 if (wait_for_completion_timeout(&ddata->ack, 433 msecs_to_jiffies(5000))) { 434 if (ddata->status == PHY_MDM6600_STATUS_PANIC) 435 dev_info(ddata->dev, "Powered down OK\n"); 436 } else { 437 dev_err(ddata->dev, "Timed out powering down\n"); 438 } 439 } 440 441 static void phy_mdm6600_deferred_power_on(struct work_struct *work) 442 { 443 struct phy_mdm6600 *ddata; 444 int error; 445 446 ddata = container_of(work, struct phy_mdm6600, bootup_work.work); 447 448 error = phy_mdm6600_device_power_on(ddata); 449 if (error) 450 dev_err(ddata->dev, "Device not functional\n"); 451 } 452 453 /* 454 * USB suspend puts mdm6600 into low power mode. For any n_gsm using apps, 455 * we need to keep the modem awake by kicking it's mode0 GPIO. This will 456 * keep the modem awake for about 1.2 seconds. When no n_gsm apps are using 457 * the modem, runtime PM auto mode can be enabled so modem can enter low 458 * power mode. 459 */ 460 static void phy_mdm6600_wake_modem(struct phy_mdm6600 *ddata) 461 { 462 struct gpio_desc *mode_gpio0; 463 464 mode_gpio0 = ddata->mode_gpios->desc[PHY_MDM6600_MODE0]; 465 gpiod_set_value_cansleep(mode_gpio0, 1); 466 usleep_range(5, 15); 467 gpiod_set_value_cansleep(mode_gpio0, 0); 468 if (ddata->awake) 469 usleep_range(5, 15); 470 else 471 msleep(MDM6600_MODEM_WAKE_DELAY_MS); 472 } 473 474 static void phy_mdm6600_modem_wake(struct work_struct *work) 475 { 476 struct phy_mdm6600 *ddata; 477 478 ddata = container_of(work, struct phy_mdm6600, modem_wake_work.work); 479 phy_mdm6600_wake_modem(ddata); 480 schedule_delayed_work(&ddata->modem_wake_work, 481 msecs_to_jiffies(MDM6600_MODEM_IDLE_DELAY_MS)); 482 } 483 484 static int __maybe_unused phy_mdm6600_runtime_suspend(struct device *dev) 485 { 486 struct phy_mdm6600 *ddata = dev_get_drvdata(dev); 487 488 cancel_delayed_work_sync(&ddata->modem_wake_work); 489 ddata->awake = false; 490 491 return 0; 492 } 493 494 static int __maybe_unused phy_mdm6600_runtime_resume(struct device *dev) 495 { 496 struct phy_mdm6600 *ddata = dev_get_drvdata(dev); 497 498 phy_mdm6600_modem_wake(&ddata->modem_wake_work.work); 499 ddata->awake = true; 500 501 return 0; 502 } 503 504 static const struct dev_pm_ops phy_mdm6600_pm_ops = { 505 SET_RUNTIME_PM_OPS(phy_mdm6600_runtime_suspend, 506 phy_mdm6600_runtime_resume, NULL) 507 }; 508 509 static const struct of_device_id phy_mdm6600_id_table[] = { 510 { .compatible = "motorola,mapphone-mdm6600", }, 511 {}, 512 }; 513 MODULE_DEVICE_TABLE(of, phy_mdm6600_id_table); 514 515 static int phy_mdm6600_probe(struct platform_device *pdev) 516 { 517 struct phy_mdm6600 *ddata; 518 int error; 519 520 ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); 521 if (!ddata) 522 return -ENOMEM; 523 524 INIT_DELAYED_WORK(&ddata->bootup_work, 525 phy_mdm6600_deferred_power_on); 526 INIT_DELAYED_WORK(&ddata->status_work, phy_mdm6600_status); 527 INIT_DELAYED_WORK(&ddata->modem_wake_work, phy_mdm6600_modem_wake); 528 init_completion(&ddata->ack); 529 530 ddata->dev = &pdev->dev; 531 platform_set_drvdata(pdev, ddata); 532 533 error = phy_mdm6600_init_lines(ddata); 534 if (error) 535 return error; 536 537 phy_mdm6600_init_irq(ddata); 538 539 ddata->generic_phy = devm_phy_create(ddata->dev, NULL, &gpio_usb_ops); 540 if (IS_ERR(ddata->generic_phy)) { 541 error = PTR_ERR(ddata->generic_phy); 542 goto cleanup; 543 } 544 545 phy_set_drvdata(ddata->generic_phy, ddata); 546 547 ddata->phy_provider = 548 devm_of_phy_provider_register(ddata->dev, 549 of_phy_simple_xlate); 550 if (IS_ERR(ddata->phy_provider)) { 551 error = PTR_ERR(ddata->phy_provider); 552 goto cleanup; 553 } 554 555 schedule_delayed_work(&ddata->bootup_work, 0); 556 557 /* 558 * See phy_mdm6600_device_power_on(). We should be able 559 * to remove this eventually when ohci-platform can deal 560 * with -EPROBE_DEFER. 561 */ 562 msleep(PHY_MDM6600_PHY_DELAY_MS + 500); 563 564 /* 565 * Enable PM runtime only after PHY has been powered up properly. 566 * It is currently only needed after USB suspends mdm6600 and n_gsm 567 * needs to access the device. We don't want to do this earlier as 568 * gpio mode0 pin doubles as mdm6600 wake-up gpio. 569 */ 570 pm_runtime_use_autosuspend(ddata->dev); 571 pm_runtime_set_autosuspend_delay(ddata->dev, 572 MDM6600_MODEM_IDLE_DELAY_MS); 573 pm_runtime_enable(ddata->dev); 574 error = pm_runtime_get_sync(ddata->dev); 575 if (error < 0) { 576 dev_warn(ddata->dev, "failed to wake modem: %i\n", error); 577 pm_runtime_put_noidle(ddata->dev); 578 } 579 pm_runtime_mark_last_busy(ddata->dev); 580 pm_runtime_put_autosuspend(ddata->dev); 581 582 return 0; 583 584 cleanup: 585 phy_mdm6600_device_power_off(ddata); 586 return error; 587 } 588 589 static int phy_mdm6600_remove(struct platform_device *pdev) 590 { 591 struct phy_mdm6600 *ddata = platform_get_drvdata(pdev); 592 struct gpio_desc *reset_gpio = ddata->ctrl_gpios[PHY_MDM6600_RESET]; 593 594 pm_runtime_dont_use_autosuspend(ddata->dev); 595 pm_runtime_put_sync(ddata->dev); 596 pm_runtime_disable(ddata->dev); 597 598 if (!ddata->running) 599 wait_for_completion_timeout(&ddata->ack, 600 msecs_to_jiffies(PHY_MDM6600_ENABLED_DELAY_MS)); 601 602 gpiod_set_value_cansleep(reset_gpio, 1); 603 phy_mdm6600_device_power_off(ddata); 604 605 cancel_delayed_work_sync(&ddata->modem_wake_work); 606 cancel_delayed_work_sync(&ddata->bootup_work); 607 cancel_delayed_work_sync(&ddata->status_work); 608 609 return 0; 610 } 611 612 static struct platform_driver phy_mdm6600_driver = { 613 .probe = phy_mdm6600_probe, 614 .remove = phy_mdm6600_remove, 615 .driver = { 616 .name = "phy-mapphone-mdm6600", 617 .pm = &phy_mdm6600_pm_ops, 618 .of_match_table = of_match_ptr(phy_mdm6600_id_table), 619 }, 620 }; 621 622 module_platform_driver(phy_mdm6600_driver); 623 624 MODULE_ALIAS("platform:gpio_usb"); 625 MODULE_AUTHOR("Tony Lindgren <tony@atomide.com>"); 626 MODULE_DESCRIPTION("mdm6600 gpio usb phy driver"); 627 MODULE_LICENSE("GPL v2"); 628