1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Rockchip USB2.0 PHY with Innosilicon IP block driver 4 * 5 * Copyright (C) 2016 Fuzhou Rockchip Electronics Co., Ltd 6 */ 7 8 #include <linux/clk.h> 9 #include <linux/clk-provider.h> 10 #include <linux/delay.h> 11 #include <linux/extcon-provider.h> 12 #include <linux/interrupt.h> 13 #include <linux/io.h> 14 #include <linux/gpio/consumer.h> 15 #include <linux/jiffies.h> 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/mutex.h> 19 #include <linux/of.h> 20 #include <linux/of_address.h> 21 #include <linux/of_irq.h> 22 #include <linux/of_platform.h> 23 #include <linux/phy/phy.h> 24 #include <linux/platform_device.h> 25 #include <linux/power_supply.h> 26 #include <linux/regmap.h> 27 #include <linux/mfd/syscon.h> 28 #include <linux/usb/of.h> 29 #include <linux/usb/otg.h> 30 31 #define BIT_WRITEABLE_SHIFT 16 32 #define SCHEDULE_DELAY (60 * HZ) 33 #define OTG_SCHEDULE_DELAY (2 * HZ) 34 35 enum rockchip_usb2phy_port_id { 36 USB2PHY_PORT_OTG, 37 USB2PHY_PORT_HOST, 38 USB2PHY_NUM_PORTS, 39 }; 40 41 enum rockchip_usb2phy_host_state { 42 PHY_STATE_HS_ONLINE = 0, 43 PHY_STATE_DISCONNECT = 1, 44 PHY_STATE_CONNECT = 2, 45 PHY_STATE_FS_LS_ONLINE = 4, 46 }; 47 48 /** 49 * enum usb_chg_state - Different states involved in USB charger detection. 50 * @USB_CHG_STATE_UNDEFINED: USB charger is not connected or detection 51 * process is not yet started. 52 * @USB_CHG_STATE_WAIT_FOR_DCD: Waiting for Data pins contact. 53 * @USB_CHG_STATE_DCD_DONE: Data pin contact is detected. 54 * @USB_CHG_STATE_PRIMARY_DONE: Primary detection is completed (Detects 55 * between SDP and DCP/CDP). 56 * @USB_CHG_STATE_SECONDARY_DONE: Secondary detection is completed (Detects 57 * between DCP and CDP). 58 * @USB_CHG_STATE_DETECTED: USB charger type is determined. 59 */ 60 enum usb_chg_state { 61 USB_CHG_STATE_UNDEFINED = 0, 62 USB_CHG_STATE_WAIT_FOR_DCD, 63 USB_CHG_STATE_DCD_DONE, 64 USB_CHG_STATE_PRIMARY_DONE, 65 USB_CHG_STATE_SECONDARY_DONE, 66 USB_CHG_STATE_DETECTED, 67 }; 68 69 static const unsigned int rockchip_usb2phy_extcon_cable[] = { 70 EXTCON_USB, 71 EXTCON_USB_HOST, 72 EXTCON_CHG_USB_SDP, 73 EXTCON_CHG_USB_CDP, 74 EXTCON_CHG_USB_DCP, 75 EXTCON_CHG_USB_SLOW, 76 EXTCON_NONE, 77 }; 78 79 struct usb2phy_reg { 80 unsigned int offset; 81 unsigned int bitend; 82 unsigned int bitstart; 83 unsigned int disable; 84 unsigned int enable; 85 }; 86 87 /** 88 * struct rockchip_chg_det_reg - usb charger detect registers 89 * @cp_det: charging port detected successfully. 90 * @dcp_det: dedicated charging port detected successfully. 91 * @dp_det: assert data pin connect successfully. 92 * @idm_sink_en: open dm sink curren. 93 * @idp_sink_en: open dp sink current. 94 * @idp_src_en: open dm source current. 95 * @rdm_pdwn_en: open dm pull down resistor. 96 * @vdm_src_en: open dm voltage source. 97 * @vdp_src_en: open dp voltage source. 98 * @opmode: utmi operational mode. 99 */ 100 struct rockchip_chg_det_reg { 101 struct usb2phy_reg cp_det; 102 struct usb2phy_reg dcp_det; 103 struct usb2phy_reg dp_det; 104 struct usb2phy_reg idm_sink_en; 105 struct usb2phy_reg idp_sink_en; 106 struct usb2phy_reg idp_src_en; 107 struct usb2phy_reg rdm_pdwn_en; 108 struct usb2phy_reg vdm_src_en; 109 struct usb2phy_reg vdp_src_en; 110 struct usb2phy_reg opmode; 111 }; 112 113 /** 114 * struct rockchip_usb2phy_port_cfg - usb-phy port configuration. 115 * @phy_sus: phy suspend register. 116 * @bvalid_det_en: vbus valid rise detection enable register. 117 * @bvalid_det_st: vbus valid rise detection status register. 118 * @bvalid_det_clr: vbus valid rise detection clear register. 119 * @ls_det_en: linestate detection enable register. 120 * @ls_det_st: linestate detection state register. 121 * @ls_det_clr: linestate detection clear register. 122 * @utmi_avalid: utmi vbus avalid status register. 123 * @utmi_bvalid: utmi vbus bvalid status register. 124 * @utmi_ls: utmi linestate state register. 125 * @utmi_hstdet: utmi host disconnect register. 126 */ 127 struct rockchip_usb2phy_port_cfg { 128 struct usb2phy_reg phy_sus; 129 struct usb2phy_reg bvalid_det_en; 130 struct usb2phy_reg bvalid_det_st; 131 struct usb2phy_reg bvalid_det_clr; 132 struct usb2phy_reg ls_det_en; 133 struct usb2phy_reg ls_det_st; 134 struct usb2phy_reg ls_det_clr; 135 struct usb2phy_reg utmi_avalid; 136 struct usb2phy_reg utmi_bvalid; 137 struct usb2phy_reg utmi_ls; 138 struct usb2phy_reg utmi_hstdet; 139 }; 140 141 /** 142 * struct rockchip_usb2phy_cfg - usb-phy configuration. 143 * @reg: the address offset of grf for usb-phy config. 144 * @num_ports: specify how many ports that the phy has. 145 * @clkout_ctl: keep on/turn off output clk of phy. 146 * @port_cfgs: usb-phy port configurations. 147 * @chg_det: charger detection registers. 148 */ 149 struct rockchip_usb2phy_cfg { 150 unsigned int reg; 151 unsigned int num_ports; 152 struct usb2phy_reg clkout_ctl; 153 const struct rockchip_usb2phy_port_cfg port_cfgs[USB2PHY_NUM_PORTS]; 154 const struct rockchip_chg_det_reg chg_det; 155 }; 156 157 /** 158 * struct rockchip_usb2phy_port - usb-phy port data. 159 * @phy: generic phy. 160 * @port_id: flag for otg port or host port. 161 * @suspended: phy suspended flag. 162 * @vbus_attached: otg device vbus status. 163 * @bvalid_irq: IRQ number assigned for vbus valid rise detection. 164 * @ls_irq: IRQ number assigned for linestate detection. 165 * @otg_mux_irq: IRQ number which multiplex otg-id/otg-bvalid/linestate 166 * irqs to one irq in otg-port. 167 * @mutex: for register updating in sm_work. 168 * @chg_work: charge detect work. 169 * @otg_sm_work: OTG state machine work. 170 * @sm_work: HOST state machine work. 171 * @port_cfg: port register configuration, assigned by driver data. 172 * @event_nb: hold event notification callback. 173 * @state: define OTG enumeration states before device reset. 174 * @mode: the dr_mode of the controller. 175 */ 176 struct rockchip_usb2phy_port { 177 struct phy *phy; 178 unsigned int port_id; 179 bool suspended; 180 bool vbus_attached; 181 int bvalid_irq; 182 int ls_irq; 183 int otg_mux_irq; 184 struct mutex mutex; 185 struct delayed_work chg_work; 186 struct delayed_work otg_sm_work; 187 struct delayed_work sm_work; 188 const struct rockchip_usb2phy_port_cfg *port_cfg; 189 struct notifier_block event_nb; 190 enum usb_otg_state state; 191 enum usb_dr_mode mode; 192 }; 193 194 /** 195 * struct rockchip_usb2phy - usb2.0 phy driver data. 196 * @dev: pointer to device. 197 * @grf: General Register Files regmap. 198 * @usbgrf: USB General Register Files regmap. 199 * @clk: clock struct of phy input clk. 200 * @clk480m: clock struct of phy output clk. 201 * @clk480m_hw: clock struct of phy output clk management. 202 * @chg_state: states involved in USB charger detection. 203 * @chg_type: USB charger types. 204 * @dcd_retries: The retry count used to track Data contact 205 * detection process. 206 * @edev: extcon device for notification registration 207 * @phy_cfg: phy register configuration, assigned by driver data. 208 * @ports: phy port instance. 209 */ 210 struct rockchip_usb2phy { 211 struct device *dev; 212 struct regmap *grf; 213 struct regmap *usbgrf; 214 struct clk *clk; 215 struct clk *clk480m; 216 struct clk_hw clk480m_hw; 217 enum usb_chg_state chg_state; 218 enum power_supply_type chg_type; 219 u8 dcd_retries; 220 struct extcon_dev *edev; 221 const struct rockchip_usb2phy_cfg *phy_cfg; 222 struct rockchip_usb2phy_port ports[USB2PHY_NUM_PORTS]; 223 }; 224 225 static inline struct regmap *get_reg_base(struct rockchip_usb2phy *rphy) 226 { 227 return rphy->usbgrf == NULL ? rphy->grf : rphy->usbgrf; 228 } 229 230 static inline int property_enable(struct regmap *base, 231 const struct usb2phy_reg *reg, bool en) 232 { 233 unsigned int val, mask, tmp; 234 235 tmp = en ? reg->enable : reg->disable; 236 mask = GENMASK(reg->bitend, reg->bitstart); 237 val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT); 238 239 return regmap_write(base, reg->offset, val); 240 } 241 242 static inline bool property_enabled(struct regmap *base, 243 const struct usb2phy_reg *reg) 244 { 245 int ret; 246 unsigned int tmp, orig; 247 unsigned int mask = GENMASK(reg->bitend, reg->bitstart); 248 249 ret = regmap_read(base, reg->offset, &orig); 250 if (ret) 251 return false; 252 253 tmp = (orig & mask) >> reg->bitstart; 254 return tmp == reg->enable; 255 } 256 257 static int rockchip_usb2phy_clk480m_prepare(struct clk_hw *hw) 258 { 259 struct rockchip_usb2phy *rphy = 260 container_of(hw, struct rockchip_usb2phy, clk480m_hw); 261 struct regmap *base = get_reg_base(rphy); 262 int ret; 263 264 /* turn on 480m clk output if it is off */ 265 if (!property_enabled(base, &rphy->phy_cfg->clkout_ctl)) { 266 ret = property_enable(base, &rphy->phy_cfg->clkout_ctl, true); 267 if (ret) 268 return ret; 269 270 /* waiting for the clk become stable */ 271 usleep_range(1200, 1300); 272 } 273 274 return 0; 275 } 276 277 static void rockchip_usb2phy_clk480m_unprepare(struct clk_hw *hw) 278 { 279 struct rockchip_usb2phy *rphy = 280 container_of(hw, struct rockchip_usb2phy, clk480m_hw); 281 struct regmap *base = get_reg_base(rphy); 282 283 /* turn off 480m clk output */ 284 property_enable(base, &rphy->phy_cfg->clkout_ctl, false); 285 } 286 287 static int rockchip_usb2phy_clk480m_prepared(struct clk_hw *hw) 288 { 289 struct rockchip_usb2phy *rphy = 290 container_of(hw, struct rockchip_usb2phy, clk480m_hw); 291 struct regmap *base = get_reg_base(rphy); 292 293 return property_enabled(base, &rphy->phy_cfg->clkout_ctl); 294 } 295 296 static unsigned long 297 rockchip_usb2phy_clk480m_recalc_rate(struct clk_hw *hw, 298 unsigned long parent_rate) 299 { 300 return 480000000; 301 } 302 303 static const struct clk_ops rockchip_usb2phy_clkout_ops = { 304 .prepare = rockchip_usb2phy_clk480m_prepare, 305 .unprepare = rockchip_usb2phy_clk480m_unprepare, 306 .is_prepared = rockchip_usb2phy_clk480m_prepared, 307 .recalc_rate = rockchip_usb2phy_clk480m_recalc_rate, 308 }; 309 310 static void rockchip_usb2phy_clk480m_unregister(void *data) 311 { 312 struct rockchip_usb2phy *rphy = data; 313 314 of_clk_del_provider(rphy->dev->of_node); 315 clk_unregister(rphy->clk480m); 316 } 317 318 static int 319 rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy) 320 { 321 struct device_node *node = rphy->dev->of_node; 322 struct clk_init_data init; 323 const char *clk_name; 324 int ret; 325 326 init.flags = 0; 327 init.name = "clk_usbphy_480m"; 328 init.ops = &rockchip_usb2phy_clkout_ops; 329 330 /* optional override of the clockname */ 331 of_property_read_string(node, "clock-output-names", &init.name); 332 333 if (rphy->clk) { 334 clk_name = __clk_get_name(rphy->clk); 335 init.parent_names = &clk_name; 336 init.num_parents = 1; 337 } else { 338 init.parent_names = NULL; 339 init.num_parents = 0; 340 } 341 342 rphy->clk480m_hw.init = &init; 343 344 /* register the clock */ 345 rphy->clk480m = clk_register(rphy->dev, &rphy->clk480m_hw); 346 if (IS_ERR(rphy->clk480m)) { 347 ret = PTR_ERR(rphy->clk480m); 348 goto err_ret; 349 } 350 351 ret = of_clk_add_provider(node, of_clk_src_simple_get, rphy->clk480m); 352 if (ret < 0) 353 goto err_clk_provider; 354 355 ret = devm_add_action(rphy->dev, rockchip_usb2phy_clk480m_unregister, 356 rphy); 357 if (ret < 0) 358 goto err_unreg_action; 359 360 return 0; 361 362 err_unreg_action: 363 of_clk_del_provider(node); 364 err_clk_provider: 365 clk_unregister(rphy->clk480m); 366 err_ret: 367 return ret; 368 } 369 370 static int rockchip_usb2phy_extcon_register(struct rockchip_usb2phy *rphy) 371 { 372 int ret; 373 struct device_node *node = rphy->dev->of_node; 374 struct extcon_dev *edev; 375 376 if (of_property_read_bool(node, "extcon")) { 377 edev = extcon_get_edev_by_phandle(rphy->dev, 0); 378 if (IS_ERR(edev)) { 379 if (PTR_ERR(edev) != -EPROBE_DEFER) 380 dev_err(rphy->dev, "Invalid or missing extcon\n"); 381 return PTR_ERR(edev); 382 } 383 } else { 384 /* Initialize extcon device */ 385 edev = devm_extcon_dev_allocate(rphy->dev, 386 rockchip_usb2phy_extcon_cable); 387 388 if (IS_ERR(edev)) 389 return -ENOMEM; 390 391 ret = devm_extcon_dev_register(rphy->dev, edev); 392 if (ret) { 393 dev_err(rphy->dev, "failed to register extcon device\n"); 394 return ret; 395 } 396 } 397 398 rphy->edev = edev; 399 400 return 0; 401 } 402 403 static int rockchip_usb2phy_init(struct phy *phy) 404 { 405 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 406 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 407 int ret = 0; 408 409 mutex_lock(&rport->mutex); 410 411 if (rport->port_id == USB2PHY_PORT_OTG) { 412 if (rport->mode != USB_DR_MODE_HOST && 413 rport->mode != USB_DR_MODE_UNKNOWN) { 414 /* clear bvalid status and enable bvalid detect irq */ 415 ret = property_enable(rphy->grf, 416 &rport->port_cfg->bvalid_det_clr, 417 true); 418 if (ret) 419 goto out; 420 421 ret = property_enable(rphy->grf, 422 &rport->port_cfg->bvalid_det_en, 423 true); 424 if (ret) 425 goto out; 426 427 schedule_delayed_work(&rport->otg_sm_work, 428 OTG_SCHEDULE_DELAY * 3); 429 } else { 430 /* If OTG works in host only mode, do nothing. */ 431 dev_dbg(&rport->phy->dev, "mode %d\n", rport->mode); 432 } 433 } else if (rport->port_id == USB2PHY_PORT_HOST) { 434 /* clear linestate and enable linestate detect irq */ 435 ret = property_enable(rphy->grf, 436 &rport->port_cfg->ls_det_clr, true); 437 if (ret) 438 goto out; 439 440 ret = property_enable(rphy->grf, 441 &rport->port_cfg->ls_det_en, true); 442 if (ret) 443 goto out; 444 445 schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY); 446 } 447 448 out: 449 mutex_unlock(&rport->mutex); 450 return ret; 451 } 452 453 static int rockchip_usb2phy_power_on(struct phy *phy) 454 { 455 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 456 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 457 struct regmap *base = get_reg_base(rphy); 458 int ret; 459 460 dev_dbg(&rport->phy->dev, "port power on\n"); 461 462 if (!rport->suspended) 463 return 0; 464 465 ret = clk_prepare_enable(rphy->clk480m); 466 if (ret) 467 return ret; 468 469 ret = property_enable(base, &rport->port_cfg->phy_sus, false); 470 if (ret) 471 return ret; 472 473 /* waiting for the utmi_clk to become stable */ 474 usleep_range(1500, 2000); 475 476 rport->suspended = false; 477 return 0; 478 } 479 480 static int rockchip_usb2phy_power_off(struct phy *phy) 481 { 482 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 483 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 484 struct regmap *base = get_reg_base(rphy); 485 int ret; 486 487 dev_dbg(&rport->phy->dev, "port power off\n"); 488 489 if (rport->suspended) 490 return 0; 491 492 ret = property_enable(base, &rport->port_cfg->phy_sus, true); 493 if (ret) 494 return ret; 495 496 rport->suspended = true; 497 clk_disable_unprepare(rphy->clk480m); 498 499 return 0; 500 } 501 502 static int rockchip_usb2phy_exit(struct phy *phy) 503 { 504 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 505 506 if (rport->port_id == USB2PHY_PORT_OTG && 507 rport->mode != USB_DR_MODE_HOST && 508 rport->mode != USB_DR_MODE_UNKNOWN) { 509 cancel_delayed_work_sync(&rport->otg_sm_work); 510 cancel_delayed_work_sync(&rport->chg_work); 511 } else if (rport->port_id == USB2PHY_PORT_HOST) 512 cancel_delayed_work_sync(&rport->sm_work); 513 514 return 0; 515 } 516 517 static const struct phy_ops rockchip_usb2phy_ops = { 518 .init = rockchip_usb2phy_init, 519 .exit = rockchip_usb2phy_exit, 520 .power_on = rockchip_usb2phy_power_on, 521 .power_off = rockchip_usb2phy_power_off, 522 .owner = THIS_MODULE, 523 }; 524 525 static void rockchip_usb2phy_otg_sm_work(struct work_struct *work) 526 { 527 struct rockchip_usb2phy_port *rport = 528 container_of(work, struct rockchip_usb2phy_port, 529 otg_sm_work.work); 530 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 531 static unsigned int cable; 532 unsigned long delay; 533 bool vbus_attach, sch_work, notify_charger; 534 535 vbus_attach = property_enabled(rphy->grf, 536 &rport->port_cfg->utmi_bvalid); 537 538 sch_work = false; 539 notify_charger = false; 540 delay = OTG_SCHEDULE_DELAY; 541 dev_dbg(&rport->phy->dev, "%s otg sm work\n", 542 usb_otg_state_string(rport->state)); 543 544 switch (rport->state) { 545 case OTG_STATE_UNDEFINED: 546 rport->state = OTG_STATE_B_IDLE; 547 if (!vbus_attach) 548 rockchip_usb2phy_power_off(rport->phy); 549 /* fall through */ 550 case OTG_STATE_B_IDLE: 551 if (extcon_get_state(rphy->edev, EXTCON_USB_HOST) > 0) { 552 dev_dbg(&rport->phy->dev, "usb otg host connect\n"); 553 rport->state = OTG_STATE_A_HOST; 554 rockchip_usb2phy_power_on(rport->phy); 555 return; 556 } else if (vbus_attach) { 557 dev_dbg(&rport->phy->dev, "vbus_attach\n"); 558 switch (rphy->chg_state) { 559 case USB_CHG_STATE_UNDEFINED: 560 schedule_delayed_work(&rport->chg_work, 0); 561 return; 562 case USB_CHG_STATE_DETECTED: 563 switch (rphy->chg_type) { 564 case POWER_SUPPLY_TYPE_USB: 565 dev_dbg(&rport->phy->dev, "sdp cable is connected\n"); 566 rockchip_usb2phy_power_on(rport->phy); 567 rport->state = OTG_STATE_B_PERIPHERAL; 568 notify_charger = true; 569 sch_work = true; 570 cable = EXTCON_CHG_USB_SDP; 571 break; 572 case POWER_SUPPLY_TYPE_USB_DCP: 573 dev_dbg(&rport->phy->dev, "dcp cable is connected\n"); 574 rockchip_usb2phy_power_off(rport->phy); 575 notify_charger = true; 576 sch_work = true; 577 cable = EXTCON_CHG_USB_DCP; 578 break; 579 case POWER_SUPPLY_TYPE_USB_CDP: 580 dev_dbg(&rport->phy->dev, "cdp cable is connected\n"); 581 rockchip_usb2phy_power_on(rport->phy); 582 rport->state = OTG_STATE_B_PERIPHERAL; 583 notify_charger = true; 584 sch_work = true; 585 cable = EXTCON_CHG_USB_CDP; 586 break; 587 default: 588 break; 589 } 590 break; 591 default: 592 break; 593 } 594 } else { 595 notify_charger = true; 596 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 597 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 598 } 599 600 if (rport->vbus_attached != vbus_attach) { 601 rport->vbus_attached = vbus_attach; 602 603 if (notify_charger && rphy->edev) { 604 extcon_set_state_sync(rphy->edev, 605 cable, vbus_attach); 606 if (cable == EXTCON_CHG_USB_SDP) 607 extcon_set_state_sync(rphy->edev, 608 EXTCON_USB, 609 vbus_attach); 610 } 611 } 612 break; 613 case OTG_STATE_B_PERIPHERAL: 614 if (!vbus_attach) { 615 dev_dbg(&rport->phy->dev, "usb disconnect\n"); 616 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 617 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 618 rport->state = OTG_STATE_B_IDLE; 619 delay = 0; 620 rockchip_usb2phy_power_off(rport->phy); 621 } 622 sch_work = true; 623 break; 624 case OTG_STATE_A_HOST: 625 if (extcon_get_state(rphy->edev, EXTCON_USB_HOST) == 0) { 626 dev_dbg(&rport->phy->dev, "usb otg host disconnect\n"); 627 rport->state = OTG_STATE_B_IDLE; 628 rockchip_usb2phy_power_off(rport->phy); 629 } 630 break; 631 default: 632 break; 633 } 634 635 if (sch_work) 636 schedule_delayed_work(&rport->otg_sm_work, delay); 637 } 638 639 static const char *chg_to_string(enum power_supply_type chg_type) 640 { 641 switch (chg_type) { 642 case POWER_SUPPLY_TYPE_USB: 643 return "USB_SDP_CHARGER"; 644 case POWER_SUPPLY_TYPE_USB_DCP: 645 return "USB_DCP_CHARGER"; 646 case POWER_SUPPLY_TYPE_USB_CDP: 647 return "USB_CDP_CHARGER"; 648 default: 649 return "INVALID_CHARGER"; 650 } 651 } 652 653 static void rockchip_chg_enable_dcd(struct rockchip_usb2phy *rphy, 654 bool en) 655 { 656 struct regmap *base = get_reg_base(rphy); 657 658 property_enable(base, &rphy->phy_cfg->chg_det.rdm_pdwn_en, en); 659 property_enable(base, &rphy->phy_cfg->chg_det.idp_src_en, en); 660 } 661 662 static void rockchip_chg_enable_primary_det(struct rockchip_usb2phy *rphy, 663 bool en) 664 { 665 struct regmap *base = get_reg_base(rphy); 666 667 property_enable(base, &rphy->phy_cfg->chg_det.vdp_src_en, en); 668 property_enable(base, &rphy->phy_cfg->chg_det.idm_sink_en, en); 669 } 670 671 static void rockchip_chg_enable_secondary_det(struct rockchip_usb2phy *rphy, 672 bool en) 673 { 674 struct regmap *base = get_reg_base(rphy); 675 676 property_enable(base, &rphy->phy_cfg->chg_det.vdm_src_en, en); 677 property_enable(base, &rphy->phy_cfg->chg_det.idp_sink_en, en); 678 } 679 680 #define CHG_DCD_POLL_TIME (100 * HZ / 1000) 681 #define CHG_DCD_MAX_RETRIES 6 682 #define CHG_PRIMARY_DET_TIME (40 * HZ / 1000) 683 #define CHG_SECONDARY_DET_TIME (40 * HZ / 1000) 684 static void rockchip_chg_detect_work(struct work_struct *work) 685 { 686 struct rockchip_usb2phy_port *rport = 687 container_of(work, struct rockchip_usb2phy_port, chg_work.work); 688 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 689 struct regmap *base = get_reg_base(rphy); 690 bool is_dcd, tmout, vout; 691 unsigned long delay; 692 693 dev_dbg(&rport->phy->dev, "chg detection work state = %d\n", 694 rphy->chg_state); 695 switch (rphy->chg_state) { 696 case USB_CHG_STATE_UNDEFINED: 697 if (!rport->suspended) 698 rockchip_usb2phy_power_off(rport->phy); 699 /* put the controller in non-driving mode */ 700 property_enable(base, &rphy->phy_cfg->chg_det.opmode, false); 701 /* Start DCD processing stage 1 */ 702 rockchip_chg_enable_dcd(rphy, true); 703 rphy->chg_state = USB_CHG_STATE_WAIT_FOR_DCD; 704 rphy->dcd_retries = 0; 705 delay = CHG_DCD_POLL_TIME; 706 break; 707 case USB_CHG_STATE_WAIT_FOR_DCD: 708 /* get data contact detection status */ 709 is_dcd = property_enabled(rphy->grf, 710 &rphy->phy_cfg->chg_det.dp_det); 711 tmout = ++rphy->dcd_retries == CHG_DCD_MAX_RETRIES; 712 /* stage 2 */ 713 if (is_dcd || tmout) { 714 /* stage 4 */ 715 /* Turn off DCD circuitry */ 716 rockchip_chg_enable_dcd(rphy, false); 717 /* Voltage Source on DP, Probe on DM */ 718 rockchip_chg_enable_primary_det(rphy, true); 719 delay = CHG_PRIMARY_DET_TIME; 720 rphy->chg_state = USB_CHG_STATE_DCD_DONE; 721 } else { 722 /* stage 3 */ 723 delay = CHG_DCD_POLL_TIME; 724 } 725 break; 726 case USB_CHG_STATE_DCD_DONE: 727 vout = property_enabled(rphy->grf, 728 &rphy->phy_cfg->chg_det.cp_det); 729 rockchip_chg_enable_primary_det(rphy, false); 730 if (vout) { 731 /* Voltage Source on DM, Probe on DP */ 732 rockchip_chg_enable_secondary_det(rphy, true); 733 delay = CHG_SECONDARY_DET_TIME; 734 rphy->chg_state = USB_CHG_STATE_PRIMARY_DONE; 735 } else { 736 if (rphy->dcd_retries == CHG_DCD_MAX_RETRIES) { 737 /* floating charger found */ 738 rphy->chg_type = POWER_SUPPLY_TYPE_USB_DCP; 739 rphy->chg_state = USB_CHG_STATE_DETECTED; 740 delay = 0; 741 } else { 742 rphy->chg_type = POWER_SUPPLY_TYPE_USB; 743 rphy->chg_state = USB_CHG_STATE_DETECTED; 744 delay = 0; 745 } 746 } 747 break; 748 case USB_CHG_STATE_PRIMARY_DONE: 749 vout = property_enabled(rphy->grf, 750 &rphy->phy_cfg->chg_det.dcp_det); 751 /* Turn off voltage source */ 752 rockchip_chg_enable_secondary_det(rphy, false); 753 if (vout) 754 rphy->chg_type = POWER_SUPPLY_TYPE_USB_DCP; 755 else 756 rphy->chg_type = POWER_SUPPLY_TYPE_USB_CDP; 757 /* fall through */ 758 case USB_CHG_STATE_SECONDARY_DONE: 759 rphy->chg_state = USB_CHG_STATE_DETECTED; 760 delay = 0; 761 /* fall through */ 762 case USB_CHG_STATE_DETECTED: 763 /* put the controller in normal mode */ 764 property_enable(base, &rphy->phy_cfg->chg_det.opmode, true); 765 rockchip_usb2phy_otg_sm_work(&rport->otg_sm_work.work); 766 dev_dbg(&rport->phy->dev, "charger = %s\n", 767 chg_to_string(rphy->chg_type)); 768 return; 769 default: 770 return; 771 } 772 773 schedule_delayed_work(&rport->chg_work, delay); 774 } 775 776 /* 777 * The function manage host-phy port state and suspend/resume phy port 778 * to save power. 779 * 780 * we rely on utmi_linestate and utmi_hostdisconnect to identify whether 781 * devices is disconnect or not. Besides, we do not need care it is FS/LS 782 * disconnected or HS disconnected, actually, we just only need get the 783 * device is disconnected at last through rearm the delayed work, 784 * to suspend the phy port in _PHY_STATE_DISCONNECT_ case. 785 * 786 * NOTE: It may invoke *phy_powr_off or *phy_power_on which will invoke 787 * some clk related APIs, so do not invoke it from interrupt context directly. 788 */ 789 static void rockchip_usb2phy_sm_work(struct work_struct *work) 790 { 791 struct rockchip_usb2phy_port *rport = 792 container_of(work, struct rockchip_usb2phy_port, sm_work.work); 793 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 794 unsigned int sh = rport->port_cfg->utmi_hstdet.bitend - 795 rport->port_cfg->utmi_hstdet.bitstart + 1; 796 unsigned int ul, uhd, state; 797 unsigned int ul_mask, uhd_mask; 798 int ret; 799 800 mutex_lock(&rport->mutex); 801 802 ret = regmap_read(rphy->grf, rport->port_cfg->utmi_ls.offset, &ul); 803 if (ret < 0) 804 goto next_schedule; 805 806 ret = regmap_read(rphy->grf, rport->port_cfg->utmi_hstdet.offset, &uhd); 807 if (ret < 0) 808 goto next_schedule; 809 810 uhd_mask = GENMASK(rport->port_cfg->utmi_hstdet.bitend, 811 rport->port_cfg->utmi_hstdet.bitstart); 812 ul_mask = GENMASK(rport->port_cfg->utmi_ls.bitend, 813 rport->port_cfg->utmi_ls.bitstart); 814 815 /* stitch on utmi_ls and utmi_hstdet as phy state */ 816 state = ((uhd & uhd_mask) >> rport->port_cfg->utmi_hstdet.bitstart) | 817 (((ul & ul_mask) >> rport->port_cfg->utmi_ls.bitstart) << sh); 818 819 switch (state) { 820 case PHY_STATE_HS_ONLINE: 821 dev_dbg(&rport->phy->dev, "HS online\n"); 822 break; 823 case PHY_STATE_FS_LS_ONLINE: 824 /* 825 * For FS/LS device, the online state share with connect state 826 * from utmi_ls and utmi_hstdet register, so we distinguish 827 * them via suspended flag. 828 * 829 * Plus, there are two cases, one is D- Line pull-up, and D+ 830 * line pull-down, the state is 4; another is D+ line pull-up, 831 * and D- line pull-down, the state is 2. 832 */ 833 if (!rport->suspended) { 834 /* D- line pull-up, D+ line pull-down */ 835 dev_dbg(&rport->phy->dev, "FS/LS online\n"); 836 break; 837 } 838 /* fall through */ 839 case PHY_STATE_CONNECT: 840 if (rport->suspended) { 841 dev_dbg(&rport->phy->dev, "Connected\n"); 842 rockchip_usb2phy_power_on(rport->phy); 843 rport->suspended = false; 844 } else { 845 /* D+ line pull-up, D- line pull-down */ 846 dev_dbg(&rport->phy->dev, "FS/LS online\n"); 847 } 848 break; 849 case PHY_STATE_DISCONNECT: 850 if (!rport->suspended) { 851 dev_dbg(&rport->phy->dev, "Disconnected\n"); 852 rockchip_usb2phy_power_off(rport->phy); 853 rport->suspended = true; 854 } 855 856 /* 857 * activate the linestate detection to get the next device 858 * plug-in irq. 859 */ 860 property_enable(rphy->grf, &rport->port_cfg->ls_det_clr, true); 861 property_enable(rphy->grf, &rport->port_cfg->ls_det_en, true); 862 863 /* 864 * we don't need to rearm the delayed work when the phy port 865 * is suspended. 866 */ 867 mutex_unlock(&rport->mutex); 868 return; 869 default: 870 dev_dbg(&rport->phy->dev, "unknown phy state\n"); 871 break; 872 } 873 874 next_schedule: 875 mutex_unlock(&rport->mutex); 876 schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY); 877 } 878 879 static irqreturn_t rockchip_usb2phy_linestate_irq(int irq, void *data) 880 { 881 struct rockchip_usb2phy_port *rport = data; 882 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 883 884 if (!property_enabled(rphy->grf, &rport->port_cfg->ls_det_st)) 885 return IRQ_NONE; 886 887 mutex_lock(&rport->mutex); 888 889 /* disable linestate detect irq and clear its status */ 890 property_enable(rphy->grf, &rport->port_cfg->ls_det_en, false); 891 property_enable(rphy->grf, &rport->port_cfg->ls_det_clr, true); 892 893 mutex_unlock(&rport->mutex); 894 895 /* 896 * In this case for host phy port, a new device is plugged in, 897 * meanwhile, if the phy port is suspended, we need rearm the work to 898 * resume it and mange its states; otherwise, we do nothing about that. 899 */ 900 if (rport->suspended && rport->port_id == USB2PHY_PORT_HOST) 901 rockchip_usb2phy_sm_work(&rport->sm_work.work); 902 903 return IRQ_HANDLED; 904 } 905 906 static irqreturn_t rockchip_usb2phy_bvalid_irq(int irq, void *data) 907 { 908 struct rockchip_usb2phy_port *rport = data; 909 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 910 911 if (!property_enabled(rphy->grf, &rport->port_cfg->bvalid_det_st)) 912 return IRQ_NONE; 913 914 mutex_lock(&rport->mutex); 915 916 /* clear bvalid detect irq pending status */ 917 property_enable(rphy->grf, &rport->port_cfg->bvalid_det_clr, true); 918 919 mutex_unlock(&rport->mutex); 920 921 rockchip_usb2phy_otg_sm_work(&rport->otg_sm_work.work); 922 923 return IRQ_HANDLED; 924 } 925 926 static irqreturn_t rockchip_usb2phy_otg_mux_irq(int irq, void *data) 927 { 928 struct rockchip_usb2phy_port *rport = data; 929 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 930 931 if (property_enabled(rphy->grf, &rport->port_cfg->bvalid_det_st)) 932 return rockchip_usb2phy_bvalid_irq(irq, data); 933 else 934 return IRQ_NONE; 935 } 936 937 static int rockchip_usb2phy_host_port_init(struct rockchip_usb2phy *rphy, 938 struct rockchip_usb2phy_port *rport, 939 struct device_node *child_np) 940 { 941 int ret; 942 943 rport->port_id = USB2PHY_PORT_HOST; 944 rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_HOST]; 945 rport->suspended = true; 946 947 mutex_init(&rport->mutex); 948 INIT_DELAYED_WORK(&rport->sm_work, rockchip_usb2phy_sm_work); 949 950 rport->ls_irq = of_irq_get_byname(child_np, "linestate"); 951 if (rport->ls_irq < 0) { 952 dev_err(rphy->dev, "no linestate irq provided\n"); 953 return rport->ls_irq; 954 } 955 956 ret = devm_request_threaded_irq(rphy->dev, rport->ls_irq, NULL, 957 rockchip_usb2phy_linestate_irq, 958 IRQF_ONESHOT, 959 "rockchip_usb2phy", rport); 960 if (ret) { 961 dev_err(rphy->dev, "failed to request linestate irq handle\n"); 962 return ret; 963 } 964 965 return 0; 966 } 967 968 static int rockchip_otg_event(struct notifier_block *nb, 969 unsigned long event, void *ptr) 970 { 971 struct rockchip_usb2phy_port *rport = 972 container_of(nb, struct rockchip_usb2phy_port, event_nb); 973 974 schedule_delayed_work(&rport->otg_sm_work, OTG_SCHEDULE_DELAY); 975 976 return NOTIFY_DONE; 977 } 978 979 static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy, 980 struct rockchip_usb2phy_port *rport, 981 struct device_node *child_np) 982 { 983 int ret; 984 985 rport->port_id = USB2PHY_PORT_OTG; 986 rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_OTG]; 987 rport->state = OTG_STATE_UNDEFINED; 988 989 /* 990 * set suspended flag to true, but actually don't 991 * put phy in suspend mode, it aims to enable usb 992 * phy and clock in power_on() called by usb controller 993 * driver during probe. 994 */ 995 rport->suspended = true; 996 rport->vbus_attached = false; 997 998 mutex_init(&rport->mutex); 999 1000 rport->mode = of_usb_get_dr_mode_by_phy(child_np, -1); 1001 if (rport->mode == USB_DR_MODE_HOST || 1002 rport->mode == USB_DR_MODE_UNKNOWN) { 1003 ret = 0; 1004 goto out; 1005 } 1006 1007 INIT_DELAYED_WORK(&rport->chg_work, rockchip_chg_detect_work); 1008 INIT_DELAYED_WORK(&rport->otg_sm_work, rockchip_usb2phy_otg_sm_work); 1009 1010 /* 1011 * Some SoCs use one interrupt with otg-id/otg-bvalid/linestate 1012 * interrupts muxed together, so probe the otg-mux interrupt first, 1013 * if not found, then look for the regular interrupts one by one. 1014 */ 1015 rport->otg_mux_irq = of_irq_get_byname(child_np, "otg-mux"); 1016 if (rport->otg_mux_irq > 0) { 1017 ret = devm_request_threaded_irq(rphy->dev, rport->otg_mux_irq, 1018 NULL, 1019 rockchip_usb2phy_otg_mux_irq, 1020 IRQF_ONESHOT, 1021 "rockchip_usb2phy_otg", 1022 rport); 1023 if (ret) { 1024 dev_err(rphy->dev, 1025 "failed to request otg-mux irq handle\n"); 1026 goto out; 1027 } 1028 } else { 1029 rport->bvalid_irq = of_irq_get_byname(child_np, "otg-bvalid"); 1030 if (rport->bvalid_irq < 0) { 1031 dev_err(rphy->dev, "no vbus valid irq provided\n"); 1032 ret = rport->bvalid_irq; 1033 goto out; 1034 } 1035 1036 ret = devm_request_threaded_irq(rphy->dev, rport->bvalid_irq, 1037 NULL, 1038 rockchip_usb2phy_bvalid_irq, 1039 IRQF_ONESHOT, 1040 "rockchip_usb2phy_bvalid", 1041 rport); 1042 if (ret) { 1043 dev_err(rphy->dev, 1044 "failed to request otg-bvalid irq handle\n"); 1045 goto out; 1046 } 1047 } 1048 1049 if (!IS_ERR(rphy->edev)) { 1050 rport->event_nb.notifier_call = rockchip_otg_event; 1051 1052 ret = devm_extcon_register_notifier(rphy->dev, rphy->edev, 1053 EXTCON_USB_HOST, &rport->event_nb); 1054 if (ret) 1055 dev_err(rphy->dev, "register USB HOST notifier failed\n"); 1056 } 1057 1058 out: 1059 return ret; 1060 } 1061 1062 static int rockchip_usb2phy_probe(struct platform_device *pdev) 1063 { 1064 struct device *dev = &pdev->dev; 1065 struct device_node *np = dev->of_node; 1066 struct device_node *child_np; 1067 struct phy_provider *provider; 1068 struct rockchip_usb2phy *rphy; 1069 const struct rockchip_usb2phy_cfg *phy_cfgs; 1070 const struct of_device_id *match; 1071 unsigned int reg; 1072 int index, ret; 1073 1074 rphy = devm_kzalloc(dev, sizeof(*rphy), GFP_KERNEL); 1075 if (!rphy) 1076 return -ENOMEM; 1077 1078 match = of_match_device(dev->driver->of_match_table, dev); 1079 if (!match || !match->data) { 1080 dev_err(dev, "phy configs are not assigned!\n"); 1081 return -EINVAL; 1082 } 1083 1084 if (!dev->parent || !dev->parent->of_node) 1085 return -EINVAL; 1086 1087 rphy->grf = syscon_node_to_regmap(dev->parent->of_node); 1088 if (IS_ERR(rphy->grf)) 1089 return PTR_ERR(rphy->grf); 1090 1091 if (of_device_is_compatible(np, "rockchip,rv1108-usb2phy")) { 1092 rphy->usbgrf = 1093 syscon_regmap_lookup_by_phandle(dev->of_node, 1094 "rockchip,usbgrf"); 1095 if (IS_ERR(rphy->usbgrf)) 1096 return PTR_ERR(rphy->usbgrf); 1097 } else { 1098 rphy->usbgrf = NULL; 1099 } 1100 1101 if (of_property_read_u32(np, "reg", ®)) { 1102 dev_err(dev, "the reg property is not assigned in %pOFn node\n", 1103 np); 1104 return -EINVAL; 1105 } 1106 1107 rphy->dev = dev; 1108 phy_cfgs = match->data; 1109 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 1110 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 1111 platform_set_drvdata(pdev, rphy); 1112 1113 ret = rockchip_usb2phy_extcon_register(rphy); 1114 if (ret) 1115 return ret; 1116 1117 /* find out a proper config which can be matched with dt. */ 1118 index = 0; 1119 while (phy_cfgs[index].reg) { 1120 if (phy_cfgs[index].reg == reg) { 1121 rphy->phy_cfg = &phy_cfgs[index]; 1122 break; 1123 } 1124 1125 ++index; 1126 } 1127 1128 if (!rphy->phy_cfg) { 1129 dev_err(dev, "no phy-config can be matched with %pOFn node\n", 1130 np); 1131 return -EINVAL; 1132 } 1133 1134 rphy->clk = of_clk_get_by_name(np, "phyclk"); 1135 if (!IS_ERR(rphy->clk)) { 1136 clk_prepare_enable(rphy->clk); 1137 } else { 1138 dev_info(&pdev->dev, "no phyclk specified\n"); 1139 rphy->clk = NULL; 1140 } 1141 1142 ret = rockchip_usb2phy_clk480m_register(rphy); 1143 if (ret) { 1144 dev_err(dev, "failed to register 480m output clock\n"); 1145 goto disable_clks; 1146 } 1147 1148 index = 0; 1149 for_each_available_child_of_node(np, child_np) { 1150 struct rockchip_usb2phy_port *rport = &rphy->ports[index]; 1151 struct phy *phy; 1152 1153 /* This driver aims to support both otg-port and host-port */ 1154 if (!of_node_name_eq(child_np, "host-port") && 1155 !of_node_name_eq(child_np, "otg-port")) 1156 goto next_child; 1157 1158 phy = devm_phy_create(dev, child_np, &rockchip_usb2phy_ops); 1159 if (IS_ERR(phy)) { 1160 dev_err(dev, "failed to create phy\n"); 1161 ret = PTR_ERR(phy); 1162 goto put_child; 1163 } 1164 1165 rport->phy = phy; 1166 phy_set_drvdata(rport->phy, rport); 1167 1168 /* initialize otg/host port separately */ 1169 if (of_node_name_eq(child_np, "host-port")) { 1170 ret = rockchip_usb2phy_host_port_init(rphy, rport, 1171 child_np); 1172 if (ret) 1173 goto put_child; 1174 } else { 1175 ret = rockchip_usb2phy_otg_port_init(rphy, rport, 1176 child_np); 1177 if (ret) 1178 goto put_child; 1179 } 1180 1181 next_child: 1182 /* to prevent out of boundary */ 1183 if (++index >= rphy->phy_cfg->num_ports) 1184 break; 1185 } 1186 1187 provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); 1188 return PTR_ERR_OR_ZERO(provider); 1189 1190 put_child: 1191 of_node_put(child_np); 1192 disable_clks: 1193 if (rphy->clk) { 1194 clk_disable_unprepare(rphy->clk); 1195 clk_put(rphy->clk); 1196 } 1197 return ret; 1198 } 1199 1200 static const struct rockchip_usb2phy_cfg rk3228_phy_cfgs[] = { 1201 { 1202 .reg = 0x760, 1203 .num_ports = 2, 1204 .clkout_ctl = { 0x0768, 4, 4, 1, 0 }, 1205 .port_cfgs = { 1206 [USB2PHY_PORT_OTG] = { 1207 .phy_sus = { 0x0760, 15, 0, 0, 0x1d1 }, 1208 .bvalid_det_en = { 0x0680, 3, 3, 0, 1 }, 1209 .bvalid_det_st = { 0x0690, 3, 3, 0, 1 }, 1210 .bvalid_det_clr = { 0x06a0, 3, 3, 0, 1 }, 1211 .ls_det_en = { 0x0680, 2, 2, 0, 1 }, 1212 .ls_det_st = { 0x0690, 2, 2, 0, 1 }, 1213 .ls_det_clr = { 0x06a0, 2, 2, 0, 1 }, 1214 .utmi_bvalid = { 0x0480, 4, 4, 0, 1 }, 1215 .utmi_ls = { 0x0480, 3, 2, 0, 1 }, 1216 }, 1217 [USB2PHY_PORT_HOST] = { 1218 .phy_sus = { 0x0764, 15, 0, 0, 0x1d1 }, 1219 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1220 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1221 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 } 1222 } 1223 }, 1224 .chg_det = { 1225 .opmode = { 0x0760, 3, 0, 5, 1 }, 1226 .cp_det = { 0x0884, 4, 4, 0, 1 }, 1227 .dcp_det = { 0x0884, 3, 3, 0, 1 }, 1228 .dp_det = { 0x0884, 5, 5, 0, 1 }, 1229 .idm_sink_en = { 0x0768, 8, 8, 0, 1 }, 1230 .idp_sink_en = { 0x0768, 7, 7, 0, 1 }, 1231 .idp_src_en = { 0x0768, 9, 9, 0, 1 }, 1232 .rdm_pdwn_en = { 0x0768, 10, 10, 0, 1 }, 1233 .vdm_src_en = { 0x0768, 12, 12, 0, 1 }, 1234 .vdp_src_en = { 0x0768, 11, 11, 0, 1 }, 1235 }, 1236 }, 1237 { 1238 .reg = 0x800, 1239 .num_ports = 2, 1240 .clkout_ctl = { 0x0808, 4, 4, 1, 0 }, 1241 .port_cfgs = { 1242 [USB2PHY_PORT_OTG] = { 1243 .phy_sus = { 0x800, 15, 0, 0, 0x1d1 }, 1244 .ls_det_en = { 0x0684, 0, 0, 0, 1 }, 1245 .ls_det_st = { 0x0694, 0, 0, 0, 1 }, 1246 .ls_det_clr = { 0x06a4, 0, 0, 0, 1 } 1247 }, 1248 [USB2PHY_PORT_HOST] = { 1249 .phy_sus = { 0x804, 15, 0, 0, 0x1d1 }, 1250 .ls_det_en = { 0x0684, 1, 1, 0, 1 }, 1251 .ls_det_st = { 0x0694, 1, 1, 0, 1 }, 1252 .ls_det_clr = { 0x06a4, 1, 1, 0, 1 } 1253 } 1254 }, 1255 }, 1256 { /* sentinel */ } 1257 }; 1258 1259 static const struct rockchip_usb2phy_cfg rk3328_phy_cfgs[] = { 1260 { 1261 .reg = 0x100, 1262 .num_ports = 2, 1263 .clkout_ctl = { 0x108, 4, 4, 1, 0 }, 1264 .port_cfgs = { 1265 [USB2PHY_PORT_OTG] = { 1266 .phy_sus = { 0x0100, 15, 0, 0, 0x1d1 }, 1267 .bvalid_det_en = { 0x0110, 2, 2, 0, 1 }, 1268 .bvalid_det_st = { 0x0114, 2, 2, 0, 1 }, 1269 .bvalid_det_clr = { 0x0118, 2, 2, 0, 1 }, 1270 .ls_det_en = { 0x0110, 0, 0, 0, 1 }, 1271 .ls_det_st = { 0x0114, 0, 0, 0, 1 }, 1272 .ls_det_clr = { 0x0118, 0, 0, 0, 1 }, 1273 .utmi_avalid = { 0x0120, 10, 10, 0, 1 }, 1274 .utmi_bvalid = { 0x0120, 9, 9, 0, 1 }, 1275 .utmi_ls = { 0x0120, 5, 4, 0, 1 }, 1276 }, 1277 [USB2PHY_PORT_HOST] = { 1278 .phy_sus = { 0x104, 15, 0, 0, 0x1d1 }, 1279 .ls_det_en = { 0x110, 1, 1, 0, 1 }, 1280 .ls_det_st = { 0x114, 1, 1, 0, 1 }, 1281 .ls_det_clr = { 0x118, 1, 1, 0, 1 }, 1282 .utmi_ls = { 0x120, 17, 16, 0, 1 }, 1283 .utmi_hstdet = { 0x120, 19, 19, 0, 1 } 1284 } 1285 }, 1286 .chg_det = { 1287 .opmode = { 0x0100, 3, 0, 5, 1 }, 1288 .cp_det = { 0x0120, 24, 24, 0, 1 }, 1289 .dcp_det = { 0x0120, 23, 23, 0, 1 }, 1290 .dp_det = { 0x0120, 25, 25, 0, 1 }, 1291 .idm_sink_en = { 0x0108, 8, 8, 0, 1 }, 1292 .idp_sink_en = { 0x0108, 7, 7, 0, 1 }, 1293 .idp_src_en = { 0x0108, 9, 9, 0, 1 }, 1294 .rdm_pdwn_en = { 0x0108, 10, 10, 0, 1 }, 1295 .vdm_src_en = { 0x0108, 12, 12, 0, 1 }, 1296 .vdp_src_en = { 0x0108, 11, 11, 0, 1 }, 1297 }, 1298 }, 1299 { /* sentinel */ } 1300 }; 1301 1302 static const struct rockchip_usb2phy_cfg rk3366_phy_cfgs[] = { 1303 { 1304 .reg = 0x700, 1305 .num_ports = 2, 1306 .clkout_ctl = { 0x0724, 15, 15, 1, 0 }, 1307 .port_cfgs = { 1308 [USB2PHY_PORT_HOST] = { 1309 .phy_sus = { 0x0728, 15, 0, 0, 0x1d1 }, 1310 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1311 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1312 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 }, 1313 .utmi_ls = { 0x049c, 14, 13, 0, 1 }, 1314 .utmi_hstdet = { 0x049c, 12, 12, 0, 1 } 1315 } 1316 }, 1317 }, 1318 { /* sentinel */ } 1319 }; 1320 1321 static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = { 1322 { 1323 .reg = 0xe450, 1324 .num_ports = 2, 1325 .clkout_ctl = { 0xe450, 4, 4, 1, 0 }, 1326 .port_cfgs = { 1327 [USB2PHY_PORT_OTG] = { 1328 .phy_sus = { 0xe454, 1, 0, 2, 1 }, 1329 .bvalid_det_en = { 0xe3c0, 3, 3, 0, 1 }, 1330 .bvalid_det_st = { 0xe3e0, 3, 3, 0, 1 }, 1331 .bvalid_det_clr = { 0xe3d0, 3, 3, 0, 1 }, 1332 .utmi_avalid = { 0xe2ac, 7, 7, 0, 1 }, 1333 .utmi_bvalid = { 0xe2ac, 12, 12, 0, 1 }, 1334 }, 1335 [USB2PHY_PORT_HOST] = { 1336 .phy_sus = { 0xe458, 1, 0, 0x2, 0x1 }, 1337 .ls_det_en = { 0xe3c0, 6, 6, 0, 1 }, 1338 .ls_det_st = { 0xe3e0, 6, 6, 0, 1 }, 1339 .ls_det_clr = { 0xe3d0, 6, 6, 0, 1 }, 1340 .utmi_ls = { 0xe2ac, 22, 21, 0, 1 }, 1341 .utmi_hstdet = { 0xe2ac, 23, 23, 0, 1 } 1342 } 1343 }, 1344 .chg_det = { 1345 .opmode = { 0xe454, 3, 0, 5, 1 }, 1346 .cp_det = { 0xe2ac, 2, 2, 0, 1 }, 1347 .dcp_det = { 0xe2ac, 1, 1, 0, 1 }, 1348 .dp_det = { 0xe2ac, 0, 0, 0, 1 }, 1349 .idm_sink_en = { 0xe450, 8, 8, 0, 1 }, 1350 .idp_sink_en = { 0xe450, 7, 7, 0, 1 }, 1351 .idp_src_en = { 0xe450, 9, 9, 0, 1 }, 1352 .rdm_pdwn_en = { 0xe450, 10, 10, 0, 1 }, 1353 .vdm_src_en = { 0xe450, 12, 12, 0, 1 }, 1354 .vdp_src_en = { 0xe450, 11, 11, 0, 1 }, 1355 }, 1356 }, 1357 { 1358 .reg = 0xe460, 1359 .num_ports = 2, 1360 .clkout_ctl = { 0xe460, 4, 4, 1, 0 }, 1361 .port_cfgs = { 1362 [USB2PHY_PORT_OTG] = { 1363 .phy_sus = { 0xe464, 1, 0, 2, 1 }, 1364 .bvalid_det_en = { 0xe3c0, 8, 8, 0, 1 }, 1365 .bvalid_det_st = { 0xe3e0, 8, 8, 0, 1 }, 1366 .bvalid_det_clr = { 0xe3d0, 8, 8, 0, 1 }, 1367 .utmi_avalid = { 0xe2ac, 10, 10, 0, 1 }, 1368 .utmi_bvalid = { 0xe2ac, 16, 16, 0, 1 }, 1369 }, 1370 [USB2PHY_PORT_HOST] = { 1371 .phy_sus = { 0xe468, 1, 0, 0x2, 0x1 }, 1372 .ls_det_en = { 0xe3c0, 11, 11, 0, 1 }, 1373 .ls_det_st = { 0xe3e0, 11, 11, 0, 1 }, 1374 .ls_det_clr = { 0xe3d0, 11, 11, 0, 1 }, 1375 .utmi_ls = { 0xe2ac, 26, 25, 0, 1 }, 1376 .utmi_hstdet = { 0xe2ac, 27, 27, 0, 1 } 1377 } 1378 }, 1379 }, 1380 { /* sentinel */ } 1381 }; 1382 1383 static const struct rockchip_usb2phy_cfg rv1108_phy_cfgs[] = { 1384 { 1385 .reg = 0x100, 1386 .num_ports = 2, 1387 .clkout_ctl = { 0x108, 4, 4, 1, 0 }, 1388 .port_cfgs = { 1389 [USB2PHY_PORT_OTG] = { 1390 .phy_sus = { 0x0100, 15, 0, 0, 0x1d1 }, 1391 .bvalid_det_en = { 0x0680, 3, 3, 0, 1 }, 1392 .bvalid_det_st = { 0x0690, 3, 3, 0, 1 }, 1393 .bvalid_det_clr = { 0x06a0, 3, 3, 0, 1 }, 1394 .ls_det_en = { 0x0680, 2, 2, 0, 1 }, 1395 .ls_det_st = { 0x0690, 2, 2, 0, 1 }, 1396 .ls_det_clr = { 0x06a0, 2, 2, 0, 1 }, 1397 .utmi_bvalid = { 0x0804, 10, 10, 0, 1 }, 1398 .utmi_ls = { 0x0804, 13, 12, 0, 1 }, 1399 }, 1400 [USB2PHY_PORT_HOST] = { 1401 .phy_sus = { 0x0104, 15, 0, 0, 0x1d1 }, 1402 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1403 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1404 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 }, 1405 .utmi_ls = { 0x0804, 9, 8, 0, 1 }, 1406 .utmi_hstdet = { 0x0804, 7, 7, 0, 1 } 1407 } 1408 }, 1409 .chg_det = { 1410 .opmode = { 0x0100, 3, 0, 5, 1 }, 1411 .cp_det = { 0x0804, 1, 1, 0, 1 }, 1412 .dcp_det = { 0x0804, 0, 0, 0, 1 }, 1413 .dp_det = { 0x0804, 2, 2, 0, 1 }, 1414 .idm_sink_en = { 0x0108, 8, 8, 0, 1 }, 1415 .idp_sink_en = { 0x0108, 7, 7, 0, 1 }, 1416 .idp_src_en = { 0x0108, 9, 9, 0, 1 }, 1417 .rdm_pdwn_en = { 0x0108, 10, 10, 0, 1 }, 1418 .vdm_src_en = { 0x0108, 12, 12, 0, 1 }, 1419 .vdp_src_en = { 0x0108, 11, 11, 0, 1 }, 1420 }, 1421 }, 1422 { /* sentinel */ } 1423 }; 1424 1425 static const struct of_device_id rockchip_usb2phy_dt_match[] = { 1426 { .compatible = "rockchip,px30-usb2phy", .data = &rk3328_phy_cfgs }, 1427 { .compatible = "rockchip,rk3228-usb2phy", .data = &rk3228_phy_cfgs }, 1428 { .compatible = "rockchip,rk3328-usb2phy", .data = &rk3328_phy_cfgs }, 1429 { .compatible = "rockchip,rk3366-usb2phy", .data = &rk3366_phy_cfgs }, 1430 { .compatible = "rockchip,rk3399-usb2phy", .data = &rk3399_phy_cfgs }, 1431 { .compatible = "rockchip,rv1108-usb2phy", .data = &rv1108_phy_cfgs }, 1432 {} 1433 }; 1434 MODULE_DEVICE_TABLE(of, rockchip_usb2phy_dt_match); 1435 1436 static struct platform_driver rockchip_usb2phy_driver = { 1437 .probe = rockchip_usb2phy_probe, 1438 .driver = { 1439 .name = "rockchip-usb2phy", 1440 .of_match_table = rockchip_usb2phy_dt_match, 1441 }, 1442 }; 1443 module_platform_driver(rockchip_usb2phy_driver); 1444 1445 MODULE_AUTHOR("Frank Wang <frank.wang@rock-chips.com>"); 1446 MODULE_DESCRIPTION("Rockchip USB2.0 PHY driver"); 1447 MODULE_LICENSE("GPL v2"); 1448