1/* 2 * Allwinner sun4i USB phy driver 3 * 4 * Copyright (C) 2014-2015 Hans de Goede <hdegoede@redhat.com> 5 * 6 * Based on code from 7 * Allwinner Technology Co., Ltd. <www.allwinnertech.com> 8 * 9 * Modelled after: Samsung S5P/EXYNOS SoC series MIPI CSIS/DSIM DPHY driver 10 * Copyright (C) 2013 Samsung Electronics Co., Ltd. 11 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or 16 * (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 */ 23 24#include <linux/clk.h> 25#include <linux/delay.h> 26#include <linux/err.h> 27#include <linux/extcon.h> 28#include <linux/io.h> 29#include <linux/interrupt.h> 30#include <linux/kernel.h> 31#include <linux/module.h> 32#include <linux/mutex.h> 33#include <linux/of.h> 34#include <linux/of_address.h> 35#include <linux/of_gpio.h> 36#include <linux/phy/phy.h> 37#include <linux/phy/phy-sun4i-usb.h> 38#include <linux/platform_device.h> 39#include <linux/power_supply.h> 40#include <linux/regulator/consumer.h> 41#include <linux/reset.h> 42#include <linux/workqueue.h> 43 44#define REG_ISCR 0x00 45#define REG_PHYCTL_A10 0x04 46#define REG_PHYBIST 0x08 47#define REG_PHYTUNE 0x0c 48#define REG_PHYCTL_A33 0x10 49 50#define PHYCTL_DATA BIT(7) 51 52#define SUNXI_AHB_ICHR8_EN BIT(10) 53#define SUNXI_AHB_INCR4_BURST_EN BIT(9) 54#define SUNXI_AHB_INCRX_ALIGN_EN BIT(8) 55#define SUNXI_ULPI_BYPASS_EN BIT(0) 56 57/* ISCR, Interface Status and Control bits */ 58#define ISCR_ID_PULLUP_EN (1 << 17) 59#define ISCR_DPDM_PULLUP_EN (1 << 16) 60/* sunxi has the phy id/vbus pins not connected, so we use the force bits */ 61#define ISCR_FORCE_ID_MASK (3 << 14) 62#define ISCR_FORCE_ID_LOW (2 << 14) 63#define ISCR_FORCE_ID_HIGH (3 << 14) 64#define ISCR_FORCE_VBUS_MASK (3 << 12) 65#define ISCR_FORCE_VBUS_LOW (2 << 12) 66#define ISCR_FORCE_VBUS_HIGH (3 << 12) 67 68/* Common Control Bits for Both PHYs */ 69#define PHY_PLL_BW 0x03 70#define PHY_RES45_CAL_EN 0x0c 71 72/* Private Control Bits for Each PHY */ 73#define PHY_TX_AMPLITUDE_TUNE 0x20 74#define PHY_TX_SLEWRATE_TUNE 0x22 75#define PHY_VBUSVALID_TH_SEL 0x25 76#define PHY_PULLUP_RES_SEL 0x27 77#define PHY_OTG_FUNC_EN 0x28 78#define PHY_VBUS_DET_EN 0x29 79#define PHY_DISCON_TH_SEL 0x2a 80#define PHY_SQUELCH_DETECT 0x3c 81 82#define MAX_PHYS 3 83 84/* 85 * Note do not raise the debounce time, we must report Vusb high within 100ms 86 * otherwise we get Vbus errors 87 */ 88#define DEBOUNCE_TIME msecs_to_jiffies(50) 89#define POLL_TIME msecs_to_jiffies(250) 90 91struct sun4i_usb_phy_data { 92 void __iomem *base; 93 struct mutex mutex; 94 int num_phys; 95 u32 disc_thresh; 96 bool has_a33_phyctl; 97 struct sun4i_usb_phy { 98 struct phy *phy; 99 void __iomem *pmu; 100 struct regulator *vbus; 101 struct reset_control *reset; 102 struct clk *clk; 103 bool regulator_on; 104 int index; 105 } phys[MAX_PHYS]; 106 /* phy0 / otg related variables */ 107 struct extcon_dev *extcon; 108 bool phy0_init; 109 bool phy0_poll; 110 struct gpio_desc *id_det_gpio; 111 struct gpio_desc *vbus_det_gpio; 112 struct power_supply *vbus_power_supply; 113 struct notifier_block vbus_power_nb; 114 bool vbus_power_nb_registered; 115 int id_det_irq; 116 int vbus_det_irq; 117 int id_det; 118 int vbus_det; 119 struct delayed_work detect; 120}; 121 122#define to_sun4i_usb_phy_data(phy) \ 123 container_of((phy), struct sun4i_usb_phy_data, phys[(phy)->index]) 124 125static void sun4i_usb_phy0_update_iscr(struct phy *_phy, u32 clr, u32 set) 126{ 127 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); 128 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); 129 u32 iscr; 130 131 iscr = readl(data->base + REG_ISCR); 132 iscr &= ~clr; 133 iscr |= set; 134 writel(iscr, data->base + REG_ISCR); 135} 136 137static void sun4i_usb_phy0_set_id_detect(struct phy *phy, u32 val) 138{ 139 if (val) 140 val = ISCR_FORCE_ID_HIGH; 141 else 142 val = ISCR_FORCE_ID_LOW; 143 144 sun4i_usb_phy0_update_iscr(phy, ISCR_FORCE_ID_MASK, val); 145} 146 147static void sun4i_usb_phy0_set_vbus_detect(struct phy *phy, u32 val) 148{ 149 if (val) 150 val = ISCR_FORCE_VBUS_HIGH; 151 else 152 val = ISCR_FORCE_VBUS_LOW; 153 154 sun4i_usb_phy0_update_iscr(phy, ISCR_FORCE_VBUS_MASK, val); 155} 156 157static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data, 158 int len) 159{ 160 struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy); 161 u32 temp, usbc_bit = BIT(phy->index * 2); 162 void *phyctl; 163 int i; 164 165 mutex_lock(&phy_data->mutex); 166 167 if (phy_data->has_a33_phyctl) { 168 phyctl = phy_data->base + REG_PHYCTL_A33; 169 /* A33 needs us to set phyctl to 0 explicitly */ 170 writel(0, phyctl); 171 } else { 172 phyctl = phy_data->base + REG_PHYCTL_A10; 173 } 174 175 for (i = 0; i < len; i++) { 176 temp = readl(phyctl); 177 178 /* clear the address portion */ 179 temp &= ~(0xff << 8); 180 181 /* set the address */ 182 temp |= ((addr + i) << 8); 183 writel(temp, phyctl); 184 185 /* set the data bit and clear usbc bit*/ 186 temp = readb(phyctl); 187 if (data & 0x1) 188 temp |= PHYCTL_DATA; 189 else 190 temp &= ~PHYCTL_DATA; 191 temp &= ~usbc_bit; 192 writeb(temp, phyctl); 193 194 /* pulse usbc_bit */ 195 temp = readb(phyctl); 196 temp |= usbc_bit; 197 writeb(temp, phyctl); 198 199 temp = readb(phyctl); 200 temp &= ~usbc_bit; 201 writeb(temp, phyctl); 202 203 data >>= 1; 204 } 205 mutex_unlock(&phy_data->mutex); 206} 207 208static void sun4i_usb_phy_passby(struct sun4i_usb_phy *phy, int enable) 209{ 210 u32 bits, reg_value; 211 212 if (!phy->pmu) 213 return; 214 215 bits = SUNXI_AHB_ICHR8_EN | SUNXI_AHB_INCR4_BURST_EN | 216 SUNXI_AHB_INCRX_ALIGN_EN | SUNXI_ULPI_BYPASS_EN; 217 218 reg_value = readl(phy->pmu); 219 220 if (enable) 221 reg_value |= bits; 222 else 223 reg_value &= ~bits; 224 225 writel(reg_value, phy->pmu); 226} 227 228static int sun4i_usb_phy_init(struct phy *_phy) 229{ 230 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); 231 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); 232 int ret; 233 234 ret = clk_prepare_enable(phy->clk); 235 if (ret) 236 return ret; 237 238 ret = reset_control_deassert(phy->reset); 239 if (ret) { 240 clk_disable_unprepare(phy->clk); 241 return ret; 242 } 243 244 /* Enable USB 45 Ohm resistor calibration */ 245 if (phy->index == 0) 246 sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1); 247 248 /* Adjust PHY's magnitude and rate */ 249 sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5); 250 251 /* Disconnect threshold adjustment */ 252 sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, data->disc_thresh, 2); 253 254 sun4i_usb_phy_passby(phy, 1); 255 256 if (phy->index == 0) { 257 data->phy0_init = true; 258 259 /* Enable pull-ups */ 260 sun4i_usb_phy0_update_iscr(_phy, 0, ISCR_DPDM_PULLUP_EN); 261 sun4i_usb_phy0_update_iscr(_phy, 0, ISCR_ID_PULLUP_EN); 262 263 if (data->id_det_gpio) { 264 /* OTG mode, force ISCR and cable state updates */ 265 data->id_det = -1; 266 data->vbus_det = -1; 267 queue_delayed_work(system_wq, &data->detect, 0); 268 } else { 269 /* Host only mode */ 270 sun4i_usb_phy0_set_id_detect(_phy, 0); 271 sun4i_usb_phy0_set_vbus_detect(_phy, 1); 272 } 273 } 274 275 return 0; 276} 277 278static int sun4i_usb_phy_exit(struct phy *_phy) 279{ 280 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); 281 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); 282 283 if (phy->index == 0) { 284 /* Disable pull-ups */ 285 sun4i_usb_phy0_update_iscr(_phy, ISCR_DPDM_PULLUP_EN, 0); 286 sun4i_usb_phy0_update_iscr(_phy, ISCR_ID_PULLUP_EN, 0); 287 data->phy0_init = false; 288 } 289 290 sun4i_usb_phy_passby(phy, 0); 291 reset_control_assert(phy->reset); 292 clk_disable_unprepare(phy->clk); 293 294 return 0; 295} 296 297static int sun4i_usb_phy0_get_vbus_det(struct sun4i_usb_phy_data *data) 298{ 299 if (data->vbus_det_gpio) 300 return gpiod_get_value_cansleep(data->vbus_det_gpio); 301 302 if (data->vbus_power_supply) { 303 union power_supply_propval val; 304 int r; 305 306 r = power_supply_get_property(data->vbus_power_supply, 307 POWER_SUPPLY_PROP_PRESENT, &val); 308 if (r == 0) 309 return val.intval; 310 } 311 312 /* Fallback: report vbus as high */ 313 return 1; 314} 315 316static bool sun4i_usb_phy0_have_vbus_det(struct sun4i_usb_phy_data *data) 317{ 318 return data->vbus_det_gpio || data->vbus_power_supply; 319} 320 321static int sun4i_usb_phy_power_on(struct phy *_phy) 322{ 323 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); 324 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); 325 int ret; 326 327 if (!phy->vbus || phy->regulator_on) 328 return 0; 329 330 /* For phy0 only turn on Vbus if we don't have an ext. Vbus */ 331 if (phy->index == 0 && sun4i_usb_phy0_have_vbus_det(data) && 332 data->vbus_det) 333 return 0; 334 335 ret = regulator_enable(phy->vbus); 336 if (ret) 337 return ret; 338 339 phy->regulator_on = true; 340 341 /* We must report Vbus high within OTG_TIME_A_WAIT_VRISE msec. */ 342 if (phy->index == 0 && data->vbus_det_gpio && data->phy0_poll) 343 mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME); 344 345 return 0; 346} 347 348static int sun4i_usb_phy_power_off(struct phy *_phy) 349{ 350 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); 351 struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); 352 353 if (!phy->vbus || !phy->regulator_on) 354 return 0; 355 356 regulator_disable(phy->vbus); 357 phy->regulator_on = false; 358 359 /* 360 * phy0 vbus typically slowly discharges, sometimes this causes the 361 * Vbus gpio to not trigger an edge irq on Vbus off, so force a rescan. 362 */ 363 if (phy->index == 0 && data->vbus_det_gpio && !data->phy0_poll) 364 mod_delayed_work(system_wq, &data->detect, POLL_TIME); 365 366 return 0; 367} 368 369void sun4i_usb_phy_set_squelch_detect(struct phy *_phy, bool enabled) 370{ 371 struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); 372 373 sun4i_usb_phy_write(phy, PHY_SQUELCH_DETECT, enabled ? 0 : 2, 2); 374} 375EXPORT_SYMBOL_GPL(sun4i_usb_phy_set_squelch_detect); 376 377static const struct phy_ops sun4i_usb_phy_ops = { 378 .init = sun4i_usb_phy_init, 379 .exit = sun4i_usb_phy_exit, 380 .power_on = sun4i_usb_phy_power_on, 381 .power_off = sun4i_usb_phy_power_off, 382 .owner = THIS_MODULE, 383}; 384 385static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) 386{ 387 struct sun4i_usb_phy_data *data = 388 container_of(work, struct sun4i_usb_phy_data, detect.work); 389 struct phy *phy0 = data->phys[0].phy; 390 int id_det, vbus_det, id_notify = 0, vbus_notify = 0; 391 392 id_det = gpiod_get_value_cansleep(data->id_det_gpio); 393 vbus_det = sun4i_usb_phy0_get_vbus_det(data); 394 395 mutex_lock(&phy0->mutex); 396 397 if (!data->phy0_init) { 398 mutex_unlock(&phy0->mutex); 399 return; 400 } 401 402 if (id_det != data->id_det) { 403 /* 404 * When a host cable (id == 0) gets plugged in on systems 405 * without vbus detection report vbus low for long enough for 406 * the musb-ip to end the current device session. 407 */ 408 if (!sun4i_usb_phy0_have_vbus_det(data) && id_det == 0) { 409 sun4i_usb_phy0_set_vbus_detect(phy0, 0); 410 msleep(200); 411 sun4i_usb_phy0_set_vbus_detect(phy0, 1); 412 } 413 sun4i_usb_phy0_set_id_detect(phy0, id_det); 414 data->id_det = id_det; 415 id_notify = 1; 416 } 417 418 if (vbus_det != data->vbus_det) { 419 sun4i_usb_phy0_set_vbus_detect(phy0, vbus_det); 420 data->vbus_det = vbus_det; 421 vbus_notify = 1; 422 } 423 424 mutex_unlock(&phy0->mutex); 425 426 if (id_notify) { 427 extcon_set_cable_state_(data->extcon, EXTCON_USB_HOST, 428 !id_det); 429 /* 430 * When a host cable gets unplugged (id == 1) on systems 431 * without vbus detection report vbus low for long enough to 432 * the musb-ip to end the current host session. 433 */ 434 if (!sun4i_usb_phy0_have_vbus_det(data) && id_det == 1) { 435 mutex_lock(&phy0->mutex); 436 sun4i_usb_phy0_set_vbus_detect(phy0, 0); 437 msleep(1000); 438 sun4i_usb_phy0_set_vbus_detect(phy0, 1); 439 mutex_unlock(&phy0->mutex); 440 } 441 } 442 443 if (vbus_notify) 444 extcon_set_cable_state_(data->extcon, EXTCON_USB, vbus_det); 445 446 if (data->phy0_poll) 447 queue_delayed_work(system_wq, &data->detect, POLL_TIME); 448} 449 450static irqreturn_t sun4i_usb_phy0_id_vbus_det_irq(int irq, void *dev_id) 451{ 452 struct sun4i_usb_phy_data *data = dev_id; 453 454 /* vbus or id changed, let the pins settle and then scan them */ 455 mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME); 456 457 return IRQ_HANDLED; 458} 459 460static int sun4i_usb_phy0_vbus_notify(struct notifier_block *nb, 461 unsigned long val, void *v) 462{ 463 struct sun4i_usb_phy_data *data = 464 container_of(nb, struct sun4i_usb_phy_data, vbus_power_nb); 465 struct power_supply *psy = v; 466 467 /* Properties on the vbus_power_supply changed, scan vbus_det */ 468 if (val == PSY_EVENT_PROP_CHANGED && psy == data->vbus_power_supply) 469 mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME); 470 471 return NOTIFY_OK; 472} 473 474static struct phy *sun4i_usb_phy_xlate(struct device *dev, 475 struct of_phandle_args *args) 476{ 477 struct sun4i_usb_phy_data *data = dev_get_drvdata(dev); 478 479 if (args->args[0] >= data->num_phys) 480 return ERR_PTR(-ENODEV); 481 482 return data->phys[args->args[0]].phy; 483} 484 485static int sun4i_usb_phy_remove(struct platform_device *pdev) 486{ 487 struct device *dev = &pdev->dev; 488 struct sun4i_usb_phy_data *data = dev_get_drvdata(dev); 489 490 if (data->vbus_power_nb_registered) 491 power_supply_unreg_notifier(&data->vbus_power_nb); 492 if (data->id_det_irq >= 0) 493 devm_free_irq(dev, data->id_det_irq, data); 494 if (data->vbus_det_irq >= 0) 495 devm_free_irq(dev, data->vbus_det_irq, data); 496 497 cancel_delayed_work_sync(&data->detect); 498 499 return 0; 500} 501 502static const unsigned int sun4i_usb_phy0_cable[] = { 503 EXTCON_USB, 504 EXTCON_USB_HOST, 505 EXTCON_NONE, 506}; 507 508static int sun4i_usb_phy_probe(struct platform_device *pdev) 509{ 510 struct sun4i_usb_phy_data *data; 511 struct device *dev = &pdev->dev; 512 struct device_node *np = dev->of_node; 513 struct phy_provider *phy_provider; 514 bool dedicated_clocks; 515 struct resource *res; 516 int i, ret; 517 518 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 519 if (!data) 520 return -ENOMEM; 521 522 mutex_init(&data->mutex); 523 INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan); 524 dev_set_drvdata(dev, data); 525 526 if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") || 527 of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") || 528 of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy")) 529 data->num_phys = 2; 530 else 531 data->num_phys = 3; 532 533 if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") || 534 of_device_is_compatible(np, "allwinner,sun7i-a20-usb-phy")) 535 data->disc_thresh = 2; 536 else 537 data->disc_thresh = 3; 538 539 if (of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy") || 540 of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") || 541 of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy")) 542 dedicated_clocks = true; 543 else 544 dedicated_clocks = false; 545 546 if (of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy")) 547 data->has_a33_phyctl = true; 548 549 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl"); 550 data->base = devm_ioremap_resource(dev, res); 551 if (IS_ERR(data->base)) 552 return PTR_ERR(data->base); 553 554 data->id_det_gpio = devm_gpiod_get_optional(dev, "usb0_id_det", 555 GPIOD_IN); 556 if (IS_ERR(data->id_det_gpio)) 557 return PTR_ERR(data->id_det_gpio); 558 559 data->vbus_det_gpio = devm_gpiod_get_optional(dev, "usb0_vbus_det", 560 GPIOD_IN); 561 if (IS_ERR(data->vbus_det_gpio)) 562 return PTR_ERR(data->vbus_det_gpio); 563 564 if (of_find_property(np, "usb0_vbus_power-supply", NULL)) { 565 data->vbus_power_supply = devm_power_supply_get_by_phandle(dev, 566 "usb0_vbus_power-supply"); 567 if (IS_ERR(data->vbus_power_supply)) 568 return PTR_ERR(data->vbus_power_supply); 569 570 if (!data->vbus_power_supply) 571 return -EPROBE_DEFER; 572 } 573 574 /* vbus_det without id_det makes no sense, and is not supported */ 575 if (sun4i_usb_phy0_have_vbus_det(data) && !data->id_det_gpio) { 576 dev_err(dev, "usb0_id_det missing or invalid\n"); 577 return -ENODEV; 578 } 579 580 if (data->id_det_gpio) { 581 data->extcon = devm_extcon_dev_allocate(dev, 582 sun4i_usb_phy0_cable); 583 if (IS_ERR(data->extcon)) 584 return PTR_ERR(data->extcon); 585 586 ret = devm_extcon_dev_register(dev, data->extcon); 587 if (ret) { 588 dev_err(dev, "failed to register extcon: %d\n", ret); 589 return ret; 590 } 591 } 592 593 for (i = 0; i < data->num_phys; i++) { 594 struct sun4i_usb_phy *phy = data->phys + i; 595 char name[16]; 596 597 snprintf(name, sizeof(name), "usb%d_vbus", i); 598 phy->vbus = devm_regulator_get_optional(dev, name); 599 if (IS_ERR(phy->vbus)) { 600 if (PTR_ERR(phy->vbus) == -EPROBE_DEFER) 601 return -EPROBE_DEFER; 602 phy->vbus = NULL; 603 } 604 605 if (dedicated_clocks) 606 snprintf(name, sizeof(name), "usb%d_phy", i); 607 else 608 strlcpy(name, "usb_phy", sizeof(name)); 609 610 phy->clk = devm_clk_get(dev, name); 611 if (IS_ERR(phy->clk)) { 612 dev_err(dev, "failed to get clock %s\n", name); 613 return PTR_ERR(phy->clk); 614 } 615 616 snprintf(name, sizeof(name), "usb%d_reset", i); 617 phy->reset = devm_reset_control_get(dev, name); 618 if (IS_ERR(phy->reset)) { 619 dev_err(dev, "failed to get reset %s\n", name); 620 return PTR_ERR(phy->reset); 621 } 622 623 if (i) { /* No pmu for usbc0 */ 624 snprintf(name, sizeof(name), "pmu%d", i); 625 res = platform_get_resource_byname(pdev, 626 IORESOURCE_MEM, name); 627 phy->pmu = devm_ioremap_resource(dev, res); 628 if (IS_ERR(phy->pmu)) 629 return PTR_ERR(phy->pmu); 630 } 631 632 phy->phy = devm_phy_create(dev, NULL, &sun4i_usb_phy_ops); 633 if (IS_ERR(phy->phy)) { 634 dev_err(dev, "failed to create PHY %d\n", i); 635 return PTR_ERR(phy->phy); 636 } 637 638 phy->index = i; 639 phy_set_drvdata(phy->phy, &data->phys[i]); 640 } 641 642 data->id_det_irq = gpiod_to_irq(data->id_det_gpio); 643 data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio); 644 if ((data->id_det_gpio && data->id_det_irq < 0) || 645 (data->vbus_det_gpio && data->vbus_det_irq < 0)) 646 data->phy0_poll = true; 647 648 if (data->id_det_irq >= 0) { 649 ret = devm_request_irq(dev, data->id_det_irq, 650 sun4i_usb_phy0_id_vbus_det_irq, 651 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, 652 "usb0-id-det", data); 653 if (ret) { 654 dev_err(dev, "Err requesting id-det-irq: %d\n", ret); 655 return ret; 656 } 657 } 658 659 if (data->vbus_det_irq >= 0) { 660 ret = devm_request_irq(dev, data->vbus_det_irq, 661 sun4i_usb_phy0_id_vbus_det_irq, 662 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, 663 "usb0-vbus-det", data); 664 if (ret) { 665 dev_err(dev, "Err requesting vbus-det-irq: %d\n", ret); 666 data->vbus_det_irq = -1; 667 sun4i_usb_phy_remove(pdev); /* Stop detect work */ 668 return ret; 669 } 670 } 671 672 if (data->vbus_power_supply) { 673 data->vbus_power_nb.notifier_call = sun4i_usb_phy0_vbus_notify; 674 data->vbus_power_nb.priority = 0; 675 ret = power_supply_reg_notifier(&data->vbus_power_nb); 676 if (ret) { 677 sun4i_usb_phy_remove(pdev); /* Stop detect work */ 678 return ret; 679 } 680 data->vbus_power_nb_registered = true; 681 } 682 683 phy_provider = devm_of_phy_provider_register(dev, sun4i_usb_phy_xlate); 684 if (IS_ERR(phy_provider)) { 685 sun4i_usb_phy_remove(pdev); /* Stop detect work */ 686 return PTR_ERR(phy_provider); 687 } 688 689 return 0; 690} 691 692static const struct of_device_id sun4i_usb_phy_of_match[] = { 693 { .compatible = "allwinner,sun4i-a10-usb-phy" }, 694 { .compatible = "allwinner,sun5i-a13-usb-phy" }, 695 { .compatible = "allwinner,sun6i-a31-usb-phy" }, 696 { .compatible = "allwinner,sun7i-a20-usb-phy" }, 697 { .compatible = "allwinner,sun8i-a23-usb-phy" }, 698 { .compatible = "allwinner,sun8i-a33-usb-phy" }, 699 { }, 700}; 701MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match); 702 703static struct platform_driver sun4i_usb_phy_driver = { 704 .probe = sun4i_usb_phy_probe, 705 .remove = sun4i_usb_phy_remove, 706 .driver = { 707 .of_match_table = sun4i_usb_phy_of_match, 708 .name = "sun4i-usb-phy", 709 } 710}; 711module_platform_driver(sun4i_usb_phy_driver); 712 713MODULE_DESCRIPTION("Allwinner sun4i USB phy driver"); 714MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); 715MODULE_LICENSE("GPL v2"); 716