1 /* 2 * Rockchip USB2.0 PHY with Innosilicon IP block driver 3 * 4 * Copyright (C) 2016 Fuzhou Rockchip Electronics Co., Ltd 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #include <linux/clk.h> 18 #include <linux/clk-provider.h> 19 #include <linux/delay.h> 20 #include <linux/extcon-provider.h> 21 #include <linux/interrupt.h> 22 #include <linux/io.h> 23 #include <linux/gpio/consumer.h> 24 #include <linux/jiffies.h> 25 #include <linux/kernel.h> 26 #include <linux/module.h> 27 #include <linux/mutex.h> 28 #include <linux/of.h> 29 #include <linux/of_address.h> 30 #include <linux/of_irq.h> 31 #include <linux/of_platform.h> 32 #include <linux/phy/phy.h> 33 #include <linux/platform_device.h> 34 #include <linux/power_supply.h> 35 #include <linux/regmap.h> 36 #include <linux/mfd/syscon.h> 37 #include <linux/usb/of.h> 38 #include <linux/usb/otg.h> 39 40 #define BIT_WRITEABLE_SHIFT 16 41 #define SCHEDULE_DELAY (60 * HZ) 42 #define OTG_SCHEDULE_DELAY (2 * HZ) 43 44 enum rockchip_usb2phy_port_id { 45 USB2PHY_PORT_OTG, 46 USB2PHY_PORT_HOST, 47 USB2PHY_NUM_PORTS, 48 }; 49 50 enum rockchip_usb2phy_host_state { 51 PHY_STATE_HS_ONLINE = 0, 52 PHY_STATE_DISCONNECT = 1, 53 PHY_STATE_CONNECT = 2, 54 PHY_STATE_FS_LS_ONLINE = 4, 55 }; 56 57 /** 58 * Different states involved in USB charger detection. 59 * USB_CHG_STATE_UNDEFINED USB charger is not connected or detection 60 * process is not yet started. 61 * USB_CHG_STATE_WAIT_FOR_DCD Waiting for Data pins contact. 62 * USB_CHG_STATE_DCD_DONE Data pin contact is detected. 63 * USB_CHG_STATE_PRIMARY_DONE Primary detection is completed (Detects 64 * between SDP and DCP/CDP). 65 * USB_CHG_STATE_SECONDARY_DONE Secondary detection is completed (Detects 66 * between DCP and CDP). 67 * USB_CHG_STATE_DETECTED USB charger type is determined. 68 */ 69 enum usb_chg_state { 70 USB_CHG_STATE_UNDEFINED = 0, 71 USB_CHG_STATE_WAIT_FOR_DCD, 72 USB_CHG_STATE_DCD_DONE, 73 USB_CHG_STATE_PRIMARY_DONE, 74 USB_CHG_STATE_SECONDARY_DONE, 75 USB_CHG_STATE_DETECTED, 76 }; 77 78 static const unsigned int rockchip_usb2phy_extcon_cable[] = { 79 EXTCON_USB, 80 EXTCON_USB_HOST, 81 EXTCON_CHG_USB_SDP, 82 EXTCON_CHG_USB_CDP, 83 EXTCON_CHG_USB_DCP, 84 EXTCON_CHG_USB_SLOW, 85 EXTCON_NONE, 86 }; 87 88 struct usb2phy_reg { 89 unsigned int offset; 90 unsigned int bitend; 91 unsigned int bitstart; 92 unsigned int disable; 93 unsigned int enable; 94 }; 95 96 /** 97 * struct rockchip_chg_det_reg: usb charger detect registers 98 * @cp_det: charging port detected successfully. 99 * @dcp_det: dedicated charging port detected successfully. 100 * @dp_det: assert data pin connect successfully. 101 * @idm_sink_en: open dm sink curren. 102 * @idp_sink_en: open dp sink current. 103 * @idp_src_en: open dm source current. 104 * @rdm_pdwn_en: open dm pull down resistor. 105 * @vdm_src_en: open dm voltage source. 106 * @vdp_src_en: open dp voltage source. 107 * @opmode: utmi operational mode. 108 */ 109 struct rockchip_chg_det_reg { 110 struct usb2phy_reg cp_det; 111 struct usb2phy_reg dcp_det; 112 struct usb2phy_reg dp_det; 113 struct usb2phy_reg idm_sink_en; 114 struct usb2phy_reg idp_sink_en; 115 struct usb2phy_reg idp_src_en; 116 struct usb2phy_reg rdm_pdwn_en; 117 struct usb2phy_reg vdm_src_en; 118 struct usb2phy_reg vdp_src_en; 119 struct usb2phy_reg opmode; 120 }; 121 122 /** 123 * struct rockchip_usb2phy_port_cfg: usb-phy port configuration. 124 * @phy_sus: phy suspend register. 125 * @bvalid_det_en: vbus valid rise detection enable register. 126 * @bvalid_det_st: vbus valid rise detection status register. 127 * @bvalid_det_clr: vbus valid rise detection clear register. 128 * @ls_det_en: linestate detection enable register. 129 * @ls_det_st: linestate detection state register. 130 * @ls_det_clr: linestate detection clear register. 131 * @utmi_avalid: utmi vbus avalid status register. 132 * @utmi_bvalid: utmi vbus bvalid status register. 133 * @utmi_ls: utmi linestate state register. 134 * @utmi_hstdet: utmi host disconnect register. 135 */ 136 struct rockchip_usb2phy_port_cfg { 137 struct usb2phy_reg phy_sus; 138 struct usb2phy_reg bvalid_det_en; 139 struct usb2phy_reg bvalid_det_st; 140 struct usb2phy_reg bvalid_det_clr; 141 struct usb2phy_reg ls_det_en; 142 struct usb2phy_reg ls_det_st; 143 struct usb2phy_reg ls_det_clr; 144 struct usb2phy_reg utmi_avalid; 145 struct usb2phy_reg utmi_bvalid; 146 struct usb2phy_reg utmi_ls; 147 struct usb2phy_reg utmi_hstdet; 148 }; 149 150 /** 151 * struct rockchip_usb2phy_cfg: usb-phy configuration. 152 * @reg: the address offset of grf for usb-phy config. 153 * @num_ports: specify how many ports that the phy has. 154 * @clkout_ctl: keep on/turn off output clk of phy. 155 * @chg_det: charger detection registers. 156 */ 157 struct rockchip_usb2phy_cfg { 158 unsigned int reg; 159 unsigned int num_ports; 160 struct usb2phy_reg clkout_ctl; 161 const struct rockchip_usb2phy_port_cfg port_cfgs[USB2PHY_NUM_PORTS]; 162 const struct rockchip_chg_det_reg chg_det; 163 }; 164 165 /** 166 * struct rockchip_usb2phy_port: usb-phy port data. 167 * @port_id: flag for otg port or host port. 168 * @suspended: phy suspended flag. 169 * @utmi_avalid: utmi avalid status usage flag. 170 * true - use avalid to get vbus status 171 * flase - use bvalid to get vbus status 172 * @vbus_attached: otg device vbus status. 173 * @bvalid_irq: IRQ number assigned for vbus valid rise detection. 174 * @ls_irq: IRQ number assigned for linestate detection. 175 * @otg_mux_irq: IRQ number which multiplex otg-id/otg-bvalid/linestate 176 * irqs to one irq in otg-port. 177 * @mutex: for register updating in sm_work. 178 * @chg_work: charge detect work. 179 * @otg_sm_work: OTG state machine work. 180 * @sm_work: HOST state machine work. 181 * @phy_cfg: port register configuration, assigned by driver data. 182 * @event_nb: hold event notification callback. 183 * @state: define OTG enumeration states before device reset. 184 * @mode: the dr_mode of the controller. 185 */ 186 struct rockchip_usb2phy_port { 187 struct phy *phy; 188 unsigned int port_id; 189 bool suspended; 190 bool utmi_avalid; 191 bool vbus_attached; 192 int bvalid_irq; 193 int ls_irq; 194 int otg_mux_irq; 195 struct mutex mutex; 196 struct delayed_work chg_work; 197 struct delayed_work otg_sm_work; 198 struct delayed_work sm_work; 199 const struct rockchip_usb2phy_port_cfg *port_cfg; 200 struct notifier_block event_nb; 201 enum usb_otg_state state; 202 enum usb_dr_mode mode; 203 }; 204 205 /** 206 * struct rockchip_usb2phy: usb2.0 phy driver data. 207 * @grf: General Register Files regmap. 208 * @usbgrf: USB General Register Files regmap. 209 * @clk: clock struct of phy input clk. 210 * @clk480m: clock struct of phy output clk. 211 * @clk_hw: clock struct of phy output clk management. 212 * @chg_state: states involved in USB charger detection. 213 * @chg_type: USB charger types. 214 * @dcd_retries: The retry count used to track Data contact 215 * detection process. 216 * @edev: extcon device for notification registration 217 * @phy_cfg: phy register configuration, assigned by driver data. 218 * @ports: phy port instance. 219 */ 220 struct rockchip_usb2phy { 221 struct device *dev; 222 struct regmap *grf; 223 struct regmap *usbgrf; 224 struct clk *clk; 225 struct clk *clk480m; 226 struct clk_hw clk480m_hw; 227 enum usb_chg_state chg_state; 228 enum power_supply_type chg_type; 229 u8 dcd_retries; 230 struct extcon_dev *edev; 231 const struct rockchip_usb2phy_cfg *phy_cfg; 232 struct rockchip_usb2phy_port ports[USB2PHY_NUM_PORTS]; 233 }; 234 235 static inline struct regmap *get_reg_base(struct rockchip_usb2phy *rphy) 236 { 237 return rphy->usbgrf == NULL ? rphy->grf : rphy->usbgrf; 238 } 239 240 static inline int property_enable(struct regmap *base, 241 const struct usb2phy_reg *reg, bool en) 242 { 243 unsigned int val, mask, tmp; 244 245 tmp = en ? reg->enable : reg->disable; 246 mask = GENMASK(reg->bitend, reg->bitstart); 247 val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT); 248 249 return regmap_write(base, reg->offset, val); 250 } 251 252 static inline bool property_enabled(struct regmap *base, 253 const struct usb2phy_reg *reg) 254 { 255 int ret; 256 unsigned int tmp, orig; 257 unsigned int mask = GENMASK(reg->bitend, reg->bitstart); 258 259 ret = regmap_read(base, reg->offset, &orig); 260 if (ret) 261 return false; 262 263 tmp = (orig & mask) >> reg->bitstart; 264 return tmp == reg->enable; 265 } 266 267 static int rockchip_usb2phy_clk480m_prepare(struct clk_hw *hw) 268 { 269 struct rockchip_usb2phy *rphy = 270 container_of(hw, struct rockchip_usb2phy, clk480m_hw); 271 struct regmap *base = get_reg_base(rphy); 272 int ret; 273 274 /* turn on 480m clk output if it is off */ 275 if (!property_enabled(base, &rphy->phy_cfg->clkout_ctl)) { 276 ret = property_enable(base, &rphy->phy_cfg->clkout_ctl, true); 277 if (ret) 278 return ret; 279 280 /* waiting for the clk become stable */ 281 usleep_range(1200, 1300); 282 } 283 284 return 0; 285 } 286 287 static void rockchip_usb2phy_clk480m_unprepare(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 /* turn off 480m clk output */ 294 property_enable(base, &rphy->phy_cfg->clkout_ctl, false); 295 } 296 297 static int rockchip_usb2phy_clk480m_prepared(struct clk_hw *hw) 298 { 299 struct rockchip_usb2phy *rphy = 300 container_of(hw, struct rockchip_usb2phy, clk480m_hw); 301 struct regmap *base = get_reg_base(rphy); 302 303 return property_enabled(base, &rphy->phy_cfg->clkout_ctl); 304 } 305 306 static unsigned long 307 rockchip_usb2phy_clk480m_recalc_rate(struct clk_hw *hw, 308 unsigned long parent_rate) 309 { 310 return 480000000; 311 } 312 313 static const struct clk_ops rockchip_usb2phy_clkout_ops = { 314 .prepare = rockchip_usb2phy_clk480m_prepare, 315 .unprepare = rockchip_usb2phy_clk480m_unprepare, 316 .is_prepared = rockchip_usb2phy_clk480m_prepared, 317 .recalc_rate = rockchip_usb2phy_clk480m_recalc_rate, 318 }; 319 320 static void rockchip_usb2phy_clk480m_unregister(void *data) 321 { 322 struct rockchip_usb2phy *rphy = data; 323 324 of_clk_del_provider(rphy->dev->of_node); 325 clk_unregister(rphy->clk480m); 326 } 327 328 static int 329 rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy) 330 { 331 struct device_node *node = rphy->dev->of_node; 332 struct clk_init_data init; 333 const char *clk_name; 334 int ret; 335 336 init.flags = 0; 337 init.name = "clk_usbphy_480m"; 338 init.ops = &rockchip_usb2phy_clkout_ops; 339 340 /* optional override of the clockname */ 341 of_property_read_string(node, "clock-output-names", &init.name); 342 343 if (rphy->clk) { 344 clk_name = __clk_get_name(rphy->clk); 345 init.parent_names = &clk_name; 346 init.num_parents = 1; 347 } else { 348 init.parent_names = NULL; 349 init.num_parents = 0; 350 } 351 352 rphy->clk480m_hw.init = &init; 353 354 /* register the clock */ 355 rphy->clk480m = clk_register(rphy->dev, &rphy->clk480m_hw); 356 if (IS_ERR(rphy->clk480m)) { 357 ret = PTR_ERR(rphy->clk480m); 358 goto err_ret; 359 } 360 361 ret = of_clk_add_provider(node, of_clk_src_simple_get, rphy->clk480m); 362 if (ret < 0) 363 goto err_clk_provider; 364 365 ret = devm_add_action(rphy->dev, rockchip_usb2phy_clk480m_unregister, 366 rphy); 367 if (ret < 0) 368 goto err_unreg_action; 369 370 return 0; 371 372 err_unreg_action: 373 of_clk_del_provider(node); 374 err_clk_provider: 375 clk_unregister(rphy->clk480m); 376 err_ret: 377 return ret; 378 } 379 380 static int rockchip_usb2phy_extcon_register(struct rockchip_usb2phy *rphy) 381 { 382 int ret; 383 struct device_node *node = rphy->dev->of_node; 384 struct extcon_dev *edev; 385 386 if (of_property_read_bool(node, "extcon")) { 387 edev = extcon_get_edev_by_phandle(rphy->dev, 0); 388 if (IS_ERR(edev)) { 389 if (PTR_ERR(edev) != -EPROBE_DEFER) 390 dev_err(rphy->dev, "Invalid or missing extcon\n"); 391 return PTR_ERR(edev); 392 } 393 } else { 394 /* Initialize extcon device */ 395 edev = devm_extcon_dev_allocate(rphy->dev, 396 rockchip_usb2phy_extcon_cable); 397 398 if (IS_ERR(edev)) 399 return -ENOMEM; 400 401 ret = devm_extcon_dev_register(rphy->dev, edev); 402 if (ret) { 403 dev_err(rphy->dev, "failed to register extcon device\n"); 404 return ret; 405 } 406 } 407 408 rphy->edev = edev; 409 410 return 0; 411 } 412 413 static int rockchip_usb2phy_init(struct phy *phy) 414 { 415 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 416 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 417 int ret = 0; 418 419 mutex_lock(&rport->mutex); 420 421 if (rport->port_id == USB2PHY_PORT_OTG) { 422 if (rport->mode != USB_DR_MODE_HOST && 423 rport->mode != USB_DR_MODE_UNKNOWN) { 424 /* clear bvalid status and enable bvalid detect irq */ 425 ret = property_enable(rphy->grf, 426 &rport->port_cfg->bvalid_det_clr, 427 true); 428 if (ret) 429 goto out; 430 431 ret = property_enable(rphy->grf, 432 &rport->port_cfg->bvalid_det_en, 433 true); 434 if (ret) 435 goto out; 436 437 schedule_delayed_work(&rport->otg_sm_work, 438 OTG_SCHEDULE_DELAY * 3); 439 } else { 440 /* If OTG works in host only mode, do nothing. */ 441 dev_dbg(&rport->phy->dev, "mode %d\n", rport->mode); 442 } 443 } else if (rport->port_id == USB2PHY_PORT_HOST) { 444 /* clear linestate and enable linestate detect irq */ 445 ret = property_enable(rphy->grf, 446 &rport->port_cfg->ls_det_clr, true); 447 if (ret) 448 goto out; 449 450 ret = property_enable(rphy->grf, 451 &rport->port_cfg->ls_det_en, true); 452 if (ret) 453 goto out; 454 455 schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY); 456 } 457 458 out: 459 mutex_unlock(&rport->mutex); 460 return ret; 461 } 462 463 static int rockchip_usb2phy_power_on(struct phy *phy) 464 { 465 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 466 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 467 struct regmap *base = get_reg_base(rphy); 468 int ret; 469 470 dev_dbg(&rport->phy->dev, "port power on\n"); 471 472 if (!rport->suspended) 473 return 0; 474 475 ret = clk_prepare_enable(rphy->clk480m); 476 if (ret) 477 return ret; 478 479 ret = property_enable(base, &rport->port_cfg->phy_sus, false); 480 if (ret) 481 return ret; 482 483 /* waiting for the utmi_clk to become stable */ 484 usleep_range(1500, 2000); 485 486 rport->suspended = false; 487 return 0; 488 } 489 490 static int rockchip_usb2phy_power_off(struct phy *phy) 491 { 492 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 493 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 494 struct regmap *base = get_reg_base(rphy); 495 int ret; 496 497 dev_dbg(&rport->phy->dev, "port power off\n"); 498 499 if (rport->suspended) 500 return 0; 501 502 ret = property_enable(base, &rport->port_cfg->phy_sus, true); 503 if (ret) 504 return ret; 505 506 rport->suspended = true; 507 clk_disable_unprepare(rphy->clk480m); 508 509 return 0; 510 } 511 512 static int rockchip_usb2phy_exit(struct phy *phy) 513 { 514 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 515 516 if (rport->port_id == USB2PHY_PORT_OTG && 517 rport->mode != USB_DR_MODE_HOST && 518 rport->mode != USB_DR_MODE_UNKNOWN) { 519 cancel_delayed_work_sync(&rport->otg_sm_work); 520 cancel_delayed_work_sync(&rport->chg_work); 521 } else if (rport->port_id == USB2PHY_PORT_HOST) 522 cancel_delayed_work_sync(&rport->sm_work); 523 524 return 0; 525 } 526 527 static const struct phy_ops rockchip_usb2phy_ops = { 528 .init = rockchip_usb2phy_init, 529 .exit = rockchip_usb2phy_exit, 530 .power_on = rockchip_usb2phy_power_on, 531 .power_off = rockchip_usb2phy_power_off, 532 .owner = THIS_MODULE, 533 }; 534 535 static void rockchip_usb2phy_otg_sm_work(struct work_struct *work) 536 { 537 struct rockchip_usb2phy_port *rport = 538 container_of(work, struct rockchip_usb2phy_port, 539 otg_sm_work.work); 540 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 541 static unsigned int cable; 542 unsigned long delay; 543 bool vbus_attach, sch_work, notify_charger; 544 545 if (rport->utmi_avalid) 546 vbus_attach = property_enabled(rphy->grf, 547 &rport->port_cfg->utmi_avalid); 548 else 549 vbus_attach = property_enabled(rphy->grf, 550 &rport->port_cfg->utmi_bvalid); 551 552 sch_work = false; 553 notify_charger = false; 554 delay = OTG_SCHEDULE_DELAY; 555 dev_dbg(&rport->phy->dev, "%s otg sm work\n", 556 usb_otg_state_string(rport->state)); 557 558 switch (rport->state) { 559 case OTG_STATE_UNDEFINED: 560 rport->state = OTG_STATE_B_IDLE; 561 if (!vbus_attach) 562 rockchip_usb2phy_power_off(rport->phy); 563 /* fall through */ 564 case OTG_STATE_B_IDLE: 565 if (extcon_get_state(rphy->edev, EXTCON_USB_HOST) > 0) { 566 dev_dbg(&rport->phy->dev, "usb otg host connect\n"); 567 rport->state = OTG_STATE_A_HOST; 568 rockchip_usb2phy_power_on(rport->phy); 569 return; 570 } else if (vbus_attach) { 571 dev_dbg(&rport->phy->dev, "vbus_attach\n"); 572 switch (rphy->chg_state) { 573 case USB_CHG_STATE_UNDEFINED: 574 schedule_delayed_work(&rport->chg_work, 0); 575 return; 576 case USB_CHG_STATE_DETECTED: 577 switch (rphy->chg_type) { 578 case POWER_SUPPLY_TYPE_USB: 579 dev_dbg(&rport->phy->dev, "sdp cable is connected\n"); 580 rockchip_usb2phy_power_on(rport->phy); 581 rport->state = OTG_STATE_B_PERIPHERAL; 582 notify_charger = true; 583 sch_work = true; 584 cable = EXTCON_CHG_USB_SDP; 585 break; 586 case POWER_SUPPLY_TYPE_USB_DCP: 587 dev_dbg(&rport->phy->dev, "dcp cable is connected\n"); 588 rockchip_usb2phy_power_off(rport->phy); 589 notify_charger = true; 590 sch_work = true; 591 cable = EXTCON_CHG_USB_DCP; 592 break; 593 case POWER_SUPPLY_TYPE_USB_CDP: 594 dev_dbg(&rport->phy->dev, "cdp cable is connected\n"); 595 rockchip_usb2phy_power_on(rport->phy); 596 rport->state = OTG_STATE_B_PERIPHERAL; 597 notify_charger = true; 598 sch_work = true; 599 cable = EXTCON_CHG_USB_CDP; 600 break; 601 default: 602 break; 603 } 604 break; 605 default: 606 break; 607 } 608 } else { 609 notify_charger = true; 610 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 611 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 612 } 613 614 if (rport->vbus_attached != vbus_attach) { 615 rport->vbus_attached = vbus_attach; 616 617 if (notify_charger && rphy->edev) { 618 extcon_set_state_sync(rphy->edev, 619 cable, vbus_attach); 620 if (cable == EXTCON_CHG_USB_SDP) 621 extcon_set_state_sync(rphy->edev, 622 EXTCON_USB, 623 vbus_attach); 624 } 625 } 626 break; 627 case OTG_STATE_B_PERIPHERAL: 628 if (!vbus_attach) { 629 dev_dbg(&rport->phy->dev, "usb disconnect\n"); 630 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 631 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 632 rport->state = OTG_STATE_B_IDLE; 633 delay = 0; 634 rockchip_usb2phy_power_off(rport->phy); 635 } 636 sch_work = true; 637 break; 638 case OTG_STATE_A_HOST: 639 if (extcon_get_state(rphy->edev, EXTCON_USB_HOST) == 0) { 640 dev_dbg(&rport->phy->dev, "usb otg host disconnect\n"); 641 rport->state = OTG_STATE_B_IDLE; 642 rockchip_usb2phy_power_off(rport->phy); 643 } 644 break; 645 default: 646 break; 647 } 648 649 if (sch_work) 650 schedule_delayed_work(&rport->otg_sm_work, delay); 651 } 652 653 static const char *chg_to_string(enum power_supply_type chg_type) 654 { 655 switch (chg_type) { 656 case POWER_SUPPLY_TYPE_USB: 657 return "USB_SDP_CHARGER"; 658 case POWER_SUPPLY_TYPE_USB_DCP: 659 return "USB_DCP_CHARGER"; 660 case POWER_SUPPLY_TYPE_USB_CDP: 661 return "USB_CDP_CHARGER"; 662 default: 663 return "INVALID_CHARGER"; 664 } 665 } 666 667 static void rockchip_chg_enable_dcd(struct rockchip_usb2phy *rphy, 668 bool en) 669 { 670 struct regmap *base = get_reg_base(rphy); 671 672 property_enable(base, &rphy->phy_cfg->chg_det.rdm_pdwn_en, en); 673 property_enable(base, &rphy->phy_cfg->chg_det.idp_src_en, en); 674 } 675 676 static void rockchip_chg_enable_primary_det(struct rockchip_usb2phy *rphy, 677 bool en) 678 { 679 struct regmap *base = get_reg_base(rphy); 680 681 property_enable(base, &rphy->phy_cfg->chg_det.vdp_src_en, en); 682 property_enable(base, &rphy->phy_cfg->chg_det.idm_sink_en, en); 683 } 684 685 static void rockchip_chg_enable_secondary_det(struct rockchip_usb2phy *rphy, 686 bool en) 687 { 688 struct regmap *base = get_reg_base(rphy); 689 690 property_enable(base, &rphy->phy_cfg->chg_det.vdm_src_en, en); 691 property_enable(base, &rphy->phy_cfg->chg_det.idp_sink_en, en); 692 } 693 694 #define CHG_DCD_POLL_TIME (100 * HZ / 1000) 695 #define CHG_DCD_MAX_RETRIES 6 696 #define CHG_PRIMARY_DET_TIME (40 * HZ / 1000) 697 #define CHG_SECONDARY_DET_TIME (40 * HZ / 1000) 698 static void rockchip_chg_detect_work(struct work_struct *work) 699 { 700 struct rockchip_usb2phy_port *rport = 701 container_of(work, struct rockchip_usb2phy_port, chg_work.work); 702 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 703 struct regmap *base = get_reg_base(rphy); 704 bool is_dcd, tmout, vout; 705 unsigned long delay; 706 707 dev_dbg(&rport->phy->dev, "chg detection work state = %d\n", 708 rphy->chg_state); 709 switch (rphy->chg_state) { 710 case USB_CHG_STATE_UNDEFINED: 711 if (!rport->suspended) 712 rockchip_usb2phy_power_off(rport->phy); 713 /* put the controller in non-driving mode */ 714 property_enable(base, &rphy->phy_cfg->chg_det.opmode, false); 715 /* Start DCD processing stage 1 */ 716 rockchip_chg_enable_dcd(rphy, true); 717 rphy->chg_state = USB_CHG_STATE_WAIT_FOR_DCD; 718 rphy->dcd_retries = 0; 719 delay = CHG_DCD_POLL_TIME; 720 break; 721 case USB_CHG_STATE_WAIT_FOR_DCD: 722 /* get data contact detection status */ 723 is_dcd = property_enabled(rphy->grf, 724 &rphy->phy_cfg->chg_det.dp_det); 725 tmout = ++rphy->dcd_retries == CHG_DCD_MAX_RETRIES; 726 /* stage 2 */ 727 if (is_dcd || tmout) { 728 /* stage 4 */ 729 /* Turn off DCD circuitry */ 730 rockchip_chg_enable_dcd(rphy, false); 731 /* Voltage Source on DP, Probe on DM */ 732 rockchip_chg_enable_primary_det(rphy, true); 733 delay = CHG_PRIMARY_DET_TIME; 734 rphy->chg_state = USB_CHG_STATE_DCD_DONE; 735 } else { 736 /* stage 3 */ 737 delay = CHG_DCD_POLL_TIME; 738 } 739 break; 740 case USB_CHG_STATE_DCD_DONE: 741 vout = property_enabled(rphy->grf, 742 &rphy->phy_cfg->chg_det.cp_det); 743 rockchip_chg_enable_primary_det(rphy, false); 744 if (vout) { 745 /* Voltage Source on DM, Probe on DP */ 746 rockchip_chg_enable_secondary_det(rphy, true); 747 delay = CHG_SECONDARY_DET_TIME; 748 rphy->chg_state = USB_CHG_STATE_PRIMARY_DONE; 749 } else { 750 if (rphy->dcd_retries == CHG_DCD_MAX_RETRIES) { 751 /* floating charger found */ 752 rphy->chg_type = POWER_SUPPLY_TYPE_USB_DCP; 753 rphy->chg_state = USB_CHG_STATE_DETECTED; 754 delay = 0; 755 } else { 756 rphy->chg_type = POWER_SUPPLY_TYPE_USB; 757 rphy->chg_state = USB_CHG_STATE_DETECTED; 758 delay = 0; 759 } 760 } 761 break; 762 case USB_CHG_STATE_PRIMARY_DONE: 763 vout = property_enabled(rphy->grf, 764 &rphy->phy_cfg->chg_det.dcp_det); 765 /* Turn off voltage source */ 766 rockchip_chg_enable_secondary_det(rphy, false); 767 if (vout) 768 rphy->chg_type = POWER_SUPPLY_TYPE_USB_DCP; 769 else 770 rphy->chg_type = POWER_SUPPLY_TYPE_USB_CDP; 771 /* fall through */ 772 case USB_CHG_STATE_SECONDARY_DONE: 773 rphy->chg_state = USB_CHG_STATE_DETECTED; 774 delay = 0; 775 /* fall through */ 776 case USB_CHG_STATE_DETECTED: 777 /* put the controller in normal mode */ 778 property_enable(base, &rphy->phy_cfg->chg_det.opmode, true); 779 rockchip_usb2phy_otg_sm_work(&rport->otg_sm_work.work); 780 dev_info(&rport->phy->dev, "charger = %s\n", 781 chg_to_string(rphy->chg_type)); 782 return; 783 default: 784 return; 785 } 786 787 schedule_delayed_work(&rport->chg_work, delay); 788 } 789 790 /* 791 * The function manage host-phy port state and suspend/resume phy port 792 * to save power. 793 * 794 * we rely on utmi_linestate and utmi_hostdisconnect to identify whether 795 * devices is disconnect or not. Besides, we do not need care it is FS/LS 796 * disconnected or HS disconnected, actually, we just only need get the 797 * device is disconnected at last through rearm the delayed work, 798 * to suspend the phy port in _PHY_STATE_DISCONNECT_ case. 799 * 800 * NOTE: It may invoke *phy_powr_off or *phy_power_on which will invoke 801 * some clk related APIs, so do not invoke it from interrupt context directly. 802 */ 803 static void rockchip_usb2phy_sm_work(struct work_struct *work) 804 { 805 struct rockchip_usb2phy_port *rport = 806 container_of(work, struct rockchip_usb2phy_port, sm_work.work); 807 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 808 unsigned int sh = rport->port_cfg->utmi_hstdet.bitend - 809 rport->port_cfg->utmi_hstdet.bitstart + 1; 810 unsigned int ul, uhd, state; 811 unsigned int ul_mask, uhd_mask; 812 int ret; 813 814 mutex_lock(&rport->mutex); 815 816 ret = regmap_read(rphy->grf, rport->port_cfg->utmi_ls.offset, &ul); 817 if (ret < 0) 818 goto next_schedule; 819 820 ret = regmap_read(rphy->grf, rport->port_cfg->utmi_hstdet.offset, &uhd); 821 if (ret < 0) 822 goto next_schedule; 823 824 uhd_mask = GENMASK(rport->port_cfg->utmi_hstdet.bitend, 825 rport->port_cfg->utmi_hstdet.bitstart); 826 ul_mask = GENMASK(rport->port_cfg->utmi_ls.bitend, 827 rport->port_cfg->utmi_ls.bitstart); 828 829 /* stitch on utmi_ls and utmi_hstdet as phy state */ 830 state = ((uhd & uhd_mask) >> rport->port_cfg->utmi_hstdet.bitstart) | 831 (((ul & ul_mask) >> rport->port_cfg->utmi_ls.bitstart) << sh); 832 833 switch (state) { 834 case PHY_STATE_HS_ONLINE: 835 dev_dbg(&rport->phy->dev, "HS online\n"); 836 break; 837 case PHY_STATE_FS_LS_ONLINE: 838 /* 839 * For FS/LS device, the online state share with connect state 840 * from utmi_ls and utmi_hstdet register, so we distinguish 841 * them via suspended flag. 842 * 843 * Plus, there are two cases, one is D- Line pull-up, and D+ 844 * line pull-down, the state is 4; another is D+ line pull-up, 845 * and D- line pull-down, the state is 2. 846 */ 847 if (!rport->suspended) { 848 /* D- line pull-up, D+ line pull-down */ 849 dev_dbg(&rport->phy->dev, "FS/LS online\n"); 850 break; 851 } 852 /* fall through */ 853 case PHY_STATE_CONNECT: 854 if (rport->suspended) { 855 dev_dbg(&rport->phy->dev, "Connected\n"); 856 rockchip_usb2phy_power_on(rport->phy); 857 rport->suspended = false; 858 } else { 859 /* D+ line pull-up, D- line pull-down */ 860 dev_dbg(&rport->phy->dev, "FS/LS online\n"); 861 } 862 break; 863 case PHY_STATE_DISCONNECT: 864 if (!rport->suspended) { 865 dev_dbg(&rport->phy->dev, "Disconnected\n"); 866 rockchip_usb2phy_power_off(rport->phy); 867 rport->suspended = true; 868 } 869 870 /* 871 * activate the linestate detection to get the next device 872 * plug-in irq. 873 */ 874 property_enable(rphy->grf, &rport->port_cfg->ls_det_clr, true); 875 property_enable(rphy->grf, &rport->port_cfg->ls_det_en, true); 876 877 /* 878 * we don't need to rearm the delayed work when the phy port 879 * is suspended. 880 */ 881 mutex_unlock(&rport->mutex); 882 return; 883 default: 884 dev_dbg(&rport->phy->dev, "unknown phy state\n"); 885 break; 886 } 887 888 next_schedule: 889 mutex_unlock(&rport->mutex); 890 schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY); 891 } 892 893 static irqreturn_t rockchip_usb2phy_linestate_irq(int irq, void *data) 894 { 895 struct rockchip_usb2phy_port *rport = data; 896 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 897 898 if (!property_enabled(rphy->grf, &rport->port_cfg->ls_det_st)) 899 return IRQ_NONE; 900 901 mutex_lock(&rport->mutex); 902 903 /* disable linestate detect irq and clear its status */ 904 property_enable(rphy->grf, &rport->port_cfg->ls_det_en, false); 905 property_enable(rphy->grf, &rport->port_cfg->ls_det_clr, true); 906 907 mutex_unlock(&rport->mutex); 908 909 /* 910 * In this case for host phy port, a new device is plugged in, 911 * meanwhile, if the phy port is suspended, we need rearm the work to 912 * resume it and mange its states; otherwise, we do nothing about that. 913 */ 914 if (rport->suspended && rport->port_id == USB2PHY_PORT_HOST) 915 rockchip_usb2phy_sm_work(&rport->sm_work.work); 916 917 return IRQ_HANDLED; 918 } 919 920 static irqreturn_t rockchip_usb2phy_bvalid_irq(int irq, void *data) 921 { 922 struct rockchip_usb2phy_port *rport = data; 923 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 924 925 if (!property_enabled(rphy->grf, &rport->port_cfg->bvalid_det_st)) 926 return IRQ_NONE; 927 928 mutex_lock(&rport->mutex); 929 930 /* clear bvalid detect irq pending status */ 931 property_enable(rphy->grf, &rport->port_cfg->bvalid_det_clr, true); 932 933 mutex_unlock(&rport->mutex); 934 935 rockchip_usb2phy_otg_sm_work(&rport->otg_sm_work.work); 936 937 return IRQ_HANDLED; 938 } 939 940 static irqreturn_t rockchip_usb2phy_otg_mux_irq(int irq, void *data) 941 { 942 struct rockchip_usb2phy_port *rport = data; 943 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 944 945 if (property_enabled(rphy->grf, &rport->port_cfg->bvalid_det_st)) 946 return rockchip_usb2phy_bvalid_irq(irq, data); 947 else 948 return IRQ_NONE; 949 } 950 951 static int rockchip_usb2phy_host_port_init(struct rockchip_usb2phy *rphy, 952 struct rockchip_usb2phy_port *rport, 953 struct device_node *child_np) 954 { 955 int ret; 956 957 rport->port_id = USB2PHY_PORT_HOST; 958 rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_HOST]; 959 rport->suspended = true; 960 961 mutex_init(&rport->mutex); 962 INIT_DELAYED_WORK(&rport->sm_work, rockchip_usb2phy_sm_work); 963 964 rport->ls_irq = of_irq_get_byname(child_np, "linestate"); 965 if (rport->ls_irq < 0) { 966 dev_err(rphy->dev, "no linestate irq provided\n"); 967 return rport->ls_irq; 968 } 969 970 ret = devm_request_threaded_irq(rphy->dev, rport->ls_irq, NULL, 971 rockchip_usb2phy_linestate_irq, 972 IRQF_ONESHOT, 973 "rockchip_usb2phy", rport); 974 if (ret) { 975 dev_err(rphy->dev, "failed to request linestate irq handle\n"); 976 return ret; 977 } 978 979 return 0; 980 } 981 982 static int rockchip_otg_event(struct notifier_block *nb, 983 unsigned long event, void *ptr) 984 { 985 struct rockchip_usb2phy_port *rport = 986 container_of(nb, struct rockchip_usb2phy_port, event_nb); 987 988 schedule_delayed_work(&rport->otg_sm_work, OTG_SCHEDULE_DELAY); 989 990 return NOTIFY_DONE; 991 } 992 993 static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy, 994 struct rockchip_usb2phy_port *rport, 995 struct device_node *child_np) 996 { 997 int ret; 998 999 rport->port_id = USB2PHY_PORT_OTG; 1000 rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_OTG]; 1001 rport->state = OTG_STATE_UNDEFINED; 1002 1003 /* 1004 * set suspended flag to true, but actually don't 1005 * put phy in suspend mode, it aims to enable usb 1006 * phy and clock in power_on() called by usb controller 1007 * driver during probe. 1008 */ 1009 rport->suspended = true; 1010 rport->vbus_attached = false; 1011 1012 mutex_init(&rport->mutex); 1013 1014 rport->mode = of_usb_get_dr_mode_by_phy(child_np, -1); 1015 if (rport->mode == USB_DR_MODE_HOST || 1016 rport->mode == USB_DR_MODE_UNKNOWN) { 1017 ret = 0; 1018 goto out; 1019 } 1020 1021 INIT_DELAYED_WORK(&rport->chg_work, rockchip_chg_detect_work); 1022 INIT_DELAYED_WORK(&rport->otg_sm_work, rockchip_usb2phy_otg_sm_work); 1023 1024 rport->utmi_avalid = 1025 of_property_read_bool(child_np, "rockchip,utmi-avalid"); 1026 1027 /* 1028 * Some SoCs use one interrupt with otg-id/otg-bvalid/linestate 1029 * interrupts muxed together, so probe the otg-mux interrupt first, 1030 * if not found, then look for the regular interrupts one by one. 1031 */ 1032 rport->otg_mux_irq = of_irq_get_byname(child_np, "otg-mux"); 1033 if (rport->otg_mux_irq > 0) { 1034 ret = devm_request_threaded_irq(rphy->dev, rport->otg_mux_irq, 1035 NULL, 1036 rockchip_usb2phy_otg_mux_irq, 1037 IRQF_ONESHOT, 1038 "rockchip_usb2phy_otg", 1039 rport); 1040 if (ret) { 1041 dev_err(rphy->dev, 1042 "failed to request otg-mux irq handle\n"); 1043 goto out; 1044 } 1045 } else { 1046 rport->bvalid_irq = of_irq_get_byname(child_np, "otg-bvalid"); 1047 if (rport->bvalid_irq < 0) { 1048 dev_err(rphy->dev, "no vbus valid irq provided\n"); 1049 ret = rport->bvalid_irq; 1050 goto out; 1051 } 1052 1053 ret = devm_request_threaded_irq(rphy->dev, rport->bvalid_irq, 1054 NULL, 1055 rockchip_usb2phy_bvalid_irq, 1056 IRQF_ONESHOT, 1057 "rockchip_usb2phy_bvalid", 1058 rport); 1059 if (ret) { 1060 dev_err(rphy->dev, 1061 "failed to request otg-bvalid irq handle\n"); 1062 goto out; 1063 } 1064 } 1065 1066 if (!IS_ERR(rphy->edev)) { 1067 rport->event_nb.notifier_call = rockchip_otg_event; 1068 1069 ret = devm_extcon_register_notifier(rphy->dev, rphy->edev, 1070 EXTCON_USB_HOST, &rport->event_nb); 1071 if (ret) 1072 dev_err(rphy->dev, "register USB HOST notifier failed\n"); 1073 } 1074 1075 out: 1076 return ret; 1077 } 1078 1079 static int rockchip_usb2phy_probe(struct platform_device *pdev) 1080 { 1081 struct device *dev = &pdev->dev; 1082 struct device_node *np = dev->of_node; 1083 struct device_node *child_np; 1084 struct phy_provider *provider; 1085 struct rockchip_usb2phy *rphy; 1086 const struct rockchip_usb2phy_cfg *phy_cfgs; 1087 const struct of_device_id *match; 1088 unsigned int reg; 1089 int index, ret; 1090 1091 rphy = devm_kzalloc(dev, sizeof(*rphy), GFP_KERNEL); 1092 if (!rphy) 1093 return -ENOMEM; 1094 1095 match = of_match_device(dev->driver->of_match_table, dev); 1096 if (!match || !match->data) { 1097 dev_err(dev, "phy configs are not assigned!\n"); 1098 return -EINVAL; 1099 } 1100 1101 if (!dev->parent || !dev->parent->of_node) 1102 return -EINVAL; 1103 1104 rphy->grf = syscon_node_to_regmap(dev->parent->of_node); 1105 if (IS_ERR(rphy->grf)) 1106 return PTR_ERR(rphy->grf); 1107 1108 if (of_device_is_compatible(np, "rockchip,rv1108-usb2phy")) { 1109 rphy->usbgrf = 1110 syscon_regmap_lookup_by_phandle(dev->of_node, 1111 "rockchip,usbgrf"); 1112 if (IS_ERR(rphy->usbgrf)) 1113 return PTR_ERR(rphy->usbgrf); 1114 } else { 1115 rphy->usbgrf = NULL; 1116 } 1117 1118 if (of_property_read_u32(np, "reg", ®)) { 1119 dev_err(dev, "the reg property is not assigned in %s node\n", 1120 np->name); 1121 return -EINVAL; 1122 } 1123 1124 rphy->dev = dev; 1125 phy_cfgs = match->data; 1126 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 1127 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 1128 platform_set_drvdata(pdev, rphy); 1129 1130 ret = rockchip_usb2phy_extcon_register(rphy); 1131 if (ret) 1132 return ret; 1133 1134 /* find out a proper config which can be matched with dt. */ 1135 index = 0; 1136 while (phy_cfgs[index].reg) { 1137 if (phy_cfgs[index].reg == reg) { 1138 rphy->phy_cfg = &phy_cfgs[index]; 1139 break; 1140 } 1141 1142 ++index; 1143 } 1144 1145 if (!rphy->phy_cfg) { 1146 dev_err(dev, "no phy-config can be matched with %s node\n", 1147 np->name); 1148 return -EINVAL; 1149 } 1150 1151 rphy->clk = of_clk_get_by_name(np, "phyclk"); 1152 if (!IS_ERR(rphy->clk)) { 1153 clk_prepare_enable(rphy->clk); 1154 } else { 1155 dev_info(&pdev->dev, "no phyclk specified\n"); 1156 rphy->clk = NULL; 1157 } 1158 1159 ret = rockchip_usb2phy_clk480m_register(rphy); 1160 if (ret) { 1161 dev_err(dev, "failed to register 480m output clock\n"); 1162 goto disable_clks; 1163 } 1164 1165 index = 0; 1166 for_each_available_child_of_node(np, child_np) { 1167 struct rockchip_usb2phy_port *rport = &rphy->ports[index]; 1168 struct phy *phy; 1169 1170 /* This driver aims to support both otg-port and host-port */ 1171 if (of_node_cmp(child_np->name, "host-port") && 1172 of_node_cmp(child_np->name, "otg-port")) 1173 goto next_child; 1174 1175 phy = devm_phy_create(dev, child_np, &rockchip_usb2phy_ops); 1176 if (IS_ERR(phy)) { 1177 dev_err(dev, "failed to create phy\n"); 1178 ret = PTR_ERR(phy); 1179 goto put_child; 1180 } 1181 1182 rport->phy = phy; 1183 phy_set_drvdata(rport->phy, rport); 1184 1185 /* initialize otg/host port separately */ 1186 if (!of_node_cmp(child_np->name, "host-port")) { 1187 ret = rockchip_usb2phy_host_port_init(rphy, rport, 1188 child_np); 1189 if (ret) 1190 goto put_child; 1191 } else { 1192 ret = rockchip_usb2phy_otg_port_init(rphy, rport, 1193 child_np); 1194 if (ret) 1195 goto put_child; 1196 } 1197 1198 next_child: 1199 /* to prevent out of boundary */ 1200 if (++index >= rphy->phy_cfg->num_ports) 1201 break; 1202 } 1203 1204 provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); 1205 return PTR_ERR_OR_ZERO(provider); 1206 1207 put_child: 1208 of_node_put(child_np); 1209 disable_clks: 1210 if (rphy->clk) { 1211 clk_disable_unprepare(rphy->clk); 1212 clk_put(rphy->clk); 1213 } 1214 return ret; 1215 } 1216 1217 static const struct rockchip_usb2phy_cfg rk3228_phy_cfgs[] = { 1218 { 1219 .reg = 0x760, 1220 .num_ports = 2, 1221 .clkout_ctl = { 0x0768, 4, 4, 1, 0 }, 1222 .port_cfgs = { 1223 [USB2PHY_PORT_OTG] = { 1224 .phy_sus = { 0x0760, 15, 0, 0, 0x1d1 }, 1225 .bvalid_det_en = { 0x0680, 3, 3, 0, 1 }, 1226 .bvalid_det_st = { 0x0690, 3, 3, 0, 1 }, 1227 .bvalid_det_clr = { 0x06a0, 3, 3, 0, 1 }, 1228 .ls_det_en = { 0x0680, 2, 2, 0, 1 }, 1229 .ls_det_st = { 0x0690, 2, 2, 0, 1 }, 1230 .ls_det_clr = { 0x06a0, 2, 2, 0, 1 }, 1231 .utmi_bvalid = { 0x0480, 4, 4, 0, 1 }, 1232 .utmi_ls = { 0x0480, 3, 2, 0, 1 }, 1233 }, 1234 [USB2PHY_PORT_HOST] = { 1235 .phy_sus = { 0x0764, 15, 0, 0, 0x1d1 }, 1236 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1237 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1238 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 } 1239 } 1240 }, 1241 .chg_det = { 1242 .opmode = { 0x0760, 3, 0, 5, 1 }, 1243 .cp_det = { 0x0884, 4, 4, 0, 1 }, 1244 .dcp_det = { 0x0884, 3, 3, 0, 1 }, 1245 .dp_det = { 0x0884, 5, 5, 0, 1 }, 1246 .idm_sink_en = { 0x0768, 8, 8, 0, 1 }, 1247 .idp_sink_en = { 0x0768, 7, 7, 0, 1 }, 1248 .idp_src_en = { 0x0768, 9, 9, 0, 1 }, 1249 .rdm_pdwn_en = { 0x0768, 10, 10, 0, 1 }, 1250 .vdm_src_en = { 0x0768, 12, 12, 0, 1 }, 1251 .vdp_src_en = { 0x0768, 11, 11, 0, 1 }, 1252 }, 1253 }, 1254 { 1255 .reg = 0x800, 1256 .num_ports = 2, 1257 .clkout_ctl = { 0x0808, 4, 4, 1, 0 }, 1258 .port_cfgs = { 1259 [USB2PHY_PORT_OTG] = { 1260 .phy_sus = { 0x800, 15, 0, 0, 0x1d1 }, 1261 .ls_det_en = { 0x0684, 0, 0, 0, 1 }, 1262 .ls_det_st = { 0x0694, 0, 0, 0, 1 }, 1263 .ls_det_clr = { 0x06a4, 0, 0, 0, 1 } 1264 }, 1265 [USB2PHY_PORT_HOST] = { 1266 .phy_sus = { 0x804, 15, 0, 0, 0x1d1 }, 1267 .ls_det_en = { 0x0684, 1, 1, 0, 1 }, 1268 .ls_det_st = { 0x0694, 1, 1, 0, 1 }, 1269 .ls_det_clr = { 0x06a4, 1, 1, 0, 1 } 1270 } 1271 }, 1272 }, 1273 { /* sentinel */ } 1274 }; 1275 1276 static const struct rockchip_usb2phy_cfg rk3328_phy_cfgs[] = { 1277 { 1278 .reg = 0x100, 1279 .num_ports = 2, 1280 .clkout_ctl = { 0x108, 4, 4, 1, 0 }, 1281 .port_cfgs = { 1282 [USB2PHY_PORT_OTG] = { 1283 .phy_sus = { 0x0100, 15, 0, 0, 0x1d1 }, 1284 .bvalid_det_en = { 0x0110, 2, 2, 0, 1 }, 1285 .bvalid_det_st = { 0x0114, 2, 2, 0, 1 }, 1286 .bvalid_det_clr = { 0x0118, 2, 2, 0, 1 }, 1287 .ls_det_en = { 0x0110, 0, 0, 0, 1 }, 1288 .ls_det_st = { 0x0114, 0, 0, 0, 1 }, 1289 .ls_det_clr = { 0x0118, 0, 0, 0, 1 }, 1290 .utmi_avalid = { 0x0120, 10, 10, 0, 1 }, 1291 .utmi_bvalid = { 0x0120, 9, 9, 0, 1 }, 1292 .utmi_ls = { 0x0120, 5, 4, 0, 1 }, 1293 }, 1294 [USB2PHY_PORT_HOST] = { 1295 .phy_sus = { 0x104, 15, 0, 0, 0x1d1 }, 1296 .ls_det_en = { 0x110, 1, 1, 0, 1 }, 1297 .ls_det_st = { 0x114, 1, 1, 0, 1 }, 1298 .ls_det_clr = { 0x118, 1, 1, 0, 1 }, 1299 .utmi_ls = { 0x120, 17, 16, 0, 1 }, 1300 .utmi_hstdet = { 0x120, 19, 19, 0, 1 } 1301 } 1302 }, 1303 .chg_det = { 1304 .opmode = { 0x0100, 3, 0, 5, 1 }, 1305 .cp_det = { 0x0120, 24, 24, 0, 1 }, 1306 .dcp_det = { 0x0120, 23, 23, 0, 1 }, 1307 .dp_det = { 0x0120, 25, 25, 0, 1 }, 1308 .idm_sink_en = { 0x0108, 8, 8, 0, 1 }, 1309 .idp_sink_en = { 0x0108, 7, 7, 0, 1 }, 1310 .idp_src_en = { 0x0108, 9, 9, 0, 1 }, 1311 .rdm_pdwn_en = { 0x0108, 10, 10, 0, 1 }, 1312 .vdm_src_en = { 0x0108, 12, 12, 0, 1 }, 1313 .vdp_src_en = { 0x0108, 11, 11, 0, 1 }, 1314 }, 1315 }, 1316 { /* sentinel */ } 1317 }; 1318 1319 static const struct rockchip_usb2phy_cfg rk3366_phy_cfgs[] = { 1320 { 1321 .reg = 0x700, 1322 .num_ports = 2, 1323 .clkout_ctl = { 0x0724, 15, 15, 1, 0 }, 1324 .port_cfgs = { 1325 [USB2PHY_PORT_HOST] = { 1326 .phy_sus = { 0x0728, 15, 0, 0, 0x1d1 }, 1327 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1328 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1329 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 }, 1330 .utmi_ls = { 0x049c, 14, 13, 0, 1 }, 1331 .utmi_hstdet = { 0x049c, 12, 12, 0, 1 } 1332 } 1333 }, 1334 }, 1335 { /* sentinel */ } 1336 }; 1337 1338 static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = { 1339 { 1340 .reg = 0xe450, 1341 .num_ports = 2, 1342 .clkout_ctl = { 0xe450, 4, 4, 1, 0 }, 1343 .port_cfgs = { 1344 [USB2PHY_PORT_OTG] = { 1345 .phy_sus = { 0xe454, 1, 0, 2, 1 }, 1346 .bvalid_det_en = { 0xe3c0, 3, 3, 0, 1 }, 1347 .bvalid_det_st = { 0xe3e0, 3, 3, 0, 1 }, 1348 .bvalid_det_clr = { 0xe3d0, 3, 3, 0, 1 }, 1349 .utmi_avalid = { 0xe2ac, 7, 7, 0, 1 }, 1350 .utmi_bvalid = { 0xe2ac, 12, 12, 0, 1 }, 1351 }, 1352 [USB2PHY_PORT_HOST] = { 1353 .phy_sus = { 0xe458, 1, 0, 0x2, 0x1 }, 1354 .ls_det_en = { 0xe3c0, 6, 6, 0, 1 }, 1355 .ls_det_st = { 0xe3e0, 6, 6, 0, 1 }, 1356 .ls_det_clr = { 0xe3d0, 6, 6, 0, 1 }, 1357 .utmi_ls = { 0xe2ac, 22, 21, 0, 1 }, 1358 .utmi_hstdet = { 0xe2ac, 23, 23, 0, 1 } 1359 } 1360 }, 1361 .chg_det = { 1362 .opmode = { 0xe454, 3, 0, 5, 1 }, 1363 .cp_det = { 0xe2ac, 2, 2, 0, 1 }, 1364 .dcp_det = { 0xe2ac, 1, 1, 0, 1 }, 1365 .dp_det = { 0xe2ac, 0, 0, 0, 1 }, 1366 .idm_sink_en = { 0xe450, 8, 8, 0, 1 }, 1367 .idp_sink_en = { 0xe450, 7, 7, 0, 1 }, 1368 .idp_src_en = { 0xe450, 9, 9, 0, 1 }, 1369 .rdm_pdwn_en = { 0xe450, 10, 10, 0, 1 }, 1370 .vdm_src_en = { 0xe450, 12, 12, 0, 1 }, 1371 .vdp_src_en = { 0xe450, 11, 11, 0, 1 }, 1372 }, 1373 }, 1374 { 1375 .reg = 0xe460, 1376 .num_ports = 2, 1377 .clkout_ctl = { 0xe460, 4, 4, 1, 0 }, 1378 .port_cfgs = { 1379 [USB2PHY_PORT_OTG] = { 1380 .phy_sus = { 0xe464, 1, 0, 2, 1 }, 1381 .bvalid_det_en = { 0xe3c0, 8, 8, 0, 1 }, 1382 .bvalid_det_st = { 0xe3e0, 8, 8, 0, 1 }, 1383 .bvalid_det_clr = { 0xe3d0, 8, 8, 0, 1 }, 1384 .utmi_avalid = { 0xe2ac, 10, 10, 0, 1 }, 1385 .utmi_bvalid = { 0xe2ac, 16, 16, 0, 1 }, 1386 }, 1387 [USB2PHY_PORT_HOST] = { 1388 .phy_sus = { 0xe468, 1, 0, 0x2, 0x1 }, 1389 .ls_det_en = { 0xe3c0, 11, 11, 0, 1 }, 1390 .ls_det_st = { 0xe3e0, 11, 11, 0, 1 }, 1391 .ls_det_clr = { 0xe3d0, 11, 11, 0, 1 }, 1392 .utmi_ls = { 0xe2ac, 26, 25, 0, 1 }, 1393 .utmi_hstdet = { 0xe2ac, 27, 27, 0, 1 } 1394 } 1395 }, 1396 }, 1397 { /* sentinel */ } 1398 }; 1399 1400 static const struct rockchip_usb2phy_cfg rv1108_phy_cfgs[] = { 1401 { 1402 .reg = 0x100, 1403 .num_ports = 2, 1404 .clkout_ctl = { 0x108, 4, 4, 1, 0 }, 1405 .port_cfgs = { 1406 [USB2PHY_PORT_OTG] = { 1407 .phy_sus = { 0x0100, 15, 0, 0, 0x1d1 }, 1408 .bvalid_det_en = { 0x0680, 3, 3, 0, 1 }, 1409 .bvalid_det_st = { 0x0690, 3, 3, 0, 1 }, 1410 .bvalid_det_clr = { 0x06a0, 3, 3, 0, 1 }, 1411 .ls_det_en = { 0x0680, 2, 2, 0, 1 }, 1412 .ls_det_st = { 0x0690, 2, 2, 0, 1 }, 1413 .ls_det_clr = { 0x06a0, 2, 2, 0, 1 }, 1414 .utmi_bvalid = { 0x0804, 10, 10, 0, 1 }, 1415 .utmi_ls = { 0x0804, 13, 12, 0, 1 }, 1416 }, 1417 [USB2PHY_PORT_HOST] = { 1418 .phy_sus = { 0x0104, 15, 0, 0, 0x1d1 }, 1419 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1420 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1421 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 }, 1422 .utmi_ls = { 0x0804, 9, 8, 0, 1 }, 1423 .utmi_hstdet = { 0x0804, 7, 7, 0, 1 } 1424 } 1425 }, 1426 .chg_det = { 1427 .opmode = { 0x0100, 3, 0, 5, 1 }, 1428 .cp_det = { 0x0804, 1, 1, 0, 1 }, 1429 .dcp_det = { 0x0804, 0, 0, 0, 1 }, 1430 .dp_det = { 0x0804, 2, 2, 0, 1 }, 1431 .idm_sink_en = { 0x0108, 8, 8, 0, 1 }, 1432 .idp_sink_en = { 0x0108, 7, 7, 0, 1 }, 1433 .idp_src_en = { 0x0108, 9, 9, 0, 1 }, 1434 .rdm_pdwn_en = { 0x0108, 10, 10, 0, 1 }, 1435 .vdm_src_en = { 0x0108, 12, 12, 0, 1 }, 1436 .vdp_src_en = { 0x0108, 11, 11, 0, 1 }, 1437 }, 1438 }, 1439 { /* sentinel */ } 1440 }; 1441 1442 static const struct of_device_id rockchip_usb2phy_dt_match[] = { 1443 { .compatible = "rockchip,rk3228-usb2phy", .data = &rk3228_phy_cfgs }, 1444 { .compatible = "rockchip,rk3328-usb2phy", .data = &rk3328_phy_cfgs }, 1445 { .compatible = "rockchip,rk3366-usb2phy", .data = &rk3366_phy_cfgs }, 1446 { .compatible = "rockchip,rk3399-usb2phy", .data = &rk3399_phy_cfgs }, 1447 { .compatible = "rockchip,rv1108-usb2phy", .data = &rv1108_phy_cfgs }, 1448 {} 1449 }; 1450 MODULE_DEVICE_TABLE(of, rockchip_usb2phy_dt_match); 1451 1452 static struct platform_driver rockchip_usb2phy_driver = { 1453 .probe = rockchip_usb2phy_probe, 1454 .driver = { 1455 .name = "rockchip-usb2phy", 1456 .of_match_table = rockchip_usb2phy_dt_match, 1457 }, 1458 }; 1459 module_platform_driver(rockchip_usb2phy_driver); 1460 1461 MODULE_AUTHOR("Frank Wang <frank.wang@rock-chips.com>"); 1462 MODULE_DESCRIPTION("Rockchip USB2.0 PHY driver"); 1463 MODULE_LICENSE("GPL v2"); 1464