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/reset.h> 28 #include <linux/mfd/syscon.h> 29 #include <linux/usb/of.h> 30 #include <linux/usb/otg.h> 31 32 #define BIT_WRITEABLE_SHIFT 16 33 #define SCHEDULE_DELAY (60 * HZ) 34 #define OTG_SCHEDULE_DELAY (2 * HZ) 35 36 struct rockchip_usb2phy; 37 38 enum rockchip_usb2phy_port_id { 39 USB2PHY_PORT_OTG, 40 USB2PHY_PORT_HOST, 41 USB2PHY_NUM_PORTS, 42 }; 43 44 enum rockchip_usb2phy_host_state { 45 PHY_STATE_HS_ONLINE = 0, 46 PHY_STATE_DISCONNECT = 1, 47 PHY_STATE_CONNECT = 2, 48 PHY_STATE_FS_LS_ONLINE = 4, 49 }; 50 51 /** 52 * enum usb_chg_state - Different states involved in USB charger detection. 53 * @USB_CHG_STATE_UNDEFINED: USB charger is not connected or detection 54 * process is not yet started. 55 * @USB_CHG_STATE_WAIT_FOR_DCD: Waiting for Data pins contact. 56 * @USB_CHG_STATE_DCD_DONE: Data pin contact is detected. 57 * @USB_CHG_STATE_PRIMARY_DONE: Primary detection is completed (Detects 58 * between SDP and DCP/CDP). 59 * @USB_CHG_STATE_SECONDARY_DONE: Secondary detection is completed (Detects 60 * between DCP and CDP). 61 * @USB_CHG_STATE_DETECTED: USB charger type is determined. 62 */ 63 enum usb_chg_state { 64 USB_CHG_STATE_UNDEFINED = 0, 65 USB_CHG_STATE_WAIT_FOR_DCD, 66 USB_CHG_STATE_DCD_DONE, 67 USB_CHG_STATE_PRIMARY_DONE, 68 USB_CHG_STATE_SECONDARY_DONE, 69 USB_CHG_STATE_DETECTED, 70 }; 71 72 static const unsigned int rockchip_usb2phy_extcon_cable[] = { 73 EXTCON_USB, 74 EXTCON_USB_HOST, 75 EXTCON_CHG_USB_SDP, 76 EXTCON_CHG_USB_CDP, 77 EXTCON_CHG_USB_DCP, 78 EXTCON_CHG_USB_SLOW, 79 EXTCON_NONE, 80 }; 81 82 struct usb2phy_reg { 83 unsigned int offset; 84 unsigned int bitend; 85 unsigned int bitstart; 86 unsigned int disable; 87 unsigned int enable; 88 }; 89 90 /** 91 * struct rockchip_chg_det_reg - usb charger detect registers 92 * @cp_det: charging port detected successfully. 93 * @dcp_det: dedicated charging port detected successfully. 94 * @dp_det: assert data pin connect successfully. 95 * @idm_sink_en: open dm sink curren. 96 * @idp_sink_en: open dp sink current. 97 * @idp_src_en: open dm source current. 98 * @rdm_pdwn_en: open dm pull down resistor. 99 * @vdm_src_en: open dm voltage source. 100 * @vdp_src_en: open dp voltage source. 101 * @opmode: utmi operational mode. 102 */ 103 struct rockchip_chg_det_reg { 104 struct usb2phy_reg cp_det; 105 struct usb2phy_reg dcp_det; 106 struct usb2phy_reg dp_det; 107 struct usb2phy_reg idm_sink_en; 108 struct usb2phy_reg idp_sink_en; 109 struct usb2phy_reg idp_src_en; 110 struct usb2phy_reg rdm_pdwn_en; 111 struct usb2phy_reg vdm_src_en; 112 struct usb2phy_reg vdp_src_en; 113 struct usb2phy_reg opmode; 114 }; 115 116 /** 117 * struct rockchip_usb2phy_port_cfg - usb-phy port configuration. 118 * @phy_sus: phy suspend register. 119 * @bvalid_det_en: vbus valid rise detection enable register. 120 * @bvalid_det_st: vbus valid rise detection status register. 121 * @bvalid_det_clr: vbus valid rise detection clear register. 122 * @disfall_en: host disconnect fall edge detection enable. 123 * @disfall_st: host disconnect fall edge detection state. 124 * @disfall_clr: host disconnect fall edge detection clear. 125 * @disrise_en: host disconnect rise edge detection enable. 126 * @disrise_st: host disconnect rise edge detection state. 127 * @disrise_clr: host disconnect rise edge detection clear. 128 * @id_det_en: id detection enable register. 129 * @id_det_st: id detection state register. 130 * @id_det_clr: id detection clear register. 131 * @ls_det_en: linestate detection enable register. 132 * @ls_det_st: linestate detection state register. 133 * @ls_det_clr: linestate detection clear register. 134 * @utmi_avalid: utmi vbus avalid status register. 135 * @utmi_bvalid: utmi vbus bvalid status register. 136 * @utmi_id: utmi id state register. 137 * @utmi_ls: utmi linestate state register. 138 * @utmi_hstdet: utmi host disconnect register. 139 */ 140 struct rockchip_usb2phy_port_cfg { 141 struct usb2phy_reg phy_sus; 142 struct usb2phy_reg bvalid_det_en; 143 struct usb2phy_reg bvalid_det_st; 144 struct usb2phy_reg bvalid_det_clr; 145 struct usb2phy_reg disfall_en; 146 struct usb2phy_reg disfall_st; 147 struct usb2phy_reg disfall_clr; 148 struct usb2phy_reg disrise_en; 149 struct usb2phy_reg disrise_st; 150 struct usb2phy_reg disrise_clr; 151 struct usb2phy_reg id_det_en; 152 struct usb2phy_reg id_det_st; 153 struct usb2phy_reg id_det_clr; 154 struct usb2phy_reg ls_det_en; 155 struct usb2phy_reg ls_det_st; 156 struct usb2phy_reg ls_det_clr; 157 struct usb2phy_reg utmi_avalid; 158 struct usb2phy_reg utmi_bvalid; 159 struct usb2phy_reg utmi_id; 160 struct usb2phy_reg utmi_ls; 161 struct usb2phy_reg utmi_hstdet; 162 }; 163 164 /** 165 * struct rockchip_usb2phy_cfg - usb-phy configuration. 166 * @reg: the address offset of grf for usb-phy config. 167 * @num_ports: specify how many ports that the phy has. 168 * @phy_tuning: phy default parameters tuning. 169 * @clkout_ctl: keep on/turn off output clk of phy. 170 * @port_cfgs: usb-phy port configurations. 171 * @chg_det: charger detection registers. 172 */ 173 struct rockchip_usb2phy_cfg { 174 unsigned int reg; 175 unsigned int num_ports; 176 int (*phy_tuning)(struct rockchip_usb2phy *rphy); 177 struct usb2phy_reg clkout_ctl; 178 const struct rockchip_usb2phy_port_cfg port_cfgs[USB2PHY_NUM_PORTS]; 179 const struct rockchip_chg_det_reg chg_det; 180 }; 181 182 /** 183 * struct rockchip_usb2phy_port - usb-phy port data. 184 * @phy: generic phy. 185 * @port_id: flag for otg port or host port. 186 * @suspended: phy suspended flag. 187 * @vbus_attached: otg device vbus status. 188 * @host_disconnect: usb host disconnect status. 189 * @bvalid_irq: IRQ number assigned for vbus valid rise detection. 190 * @id_irq: IRQ number assigned for ID pin detection. 191 * @ls_irq: IRQ number assigned for linestate detection. 192 * @otg_mux_irq: IRQ number which multiplex otg-id/otg-bvalid/linestate 193 * irqs to one irq in otg-port. 194 * @mutex: for register updating in sm_work. 195 * @chg_work: charge detect work. 196 * @otg_sm_work: OTG state machine work. 197 * @sm_work: HOST state machine work. 198 * @port_cfg: port register configuration, assigned by driver data. 199 * @event_nb: hold event notification callback. 200 * @state: define OTG enumeration states before device reset. 201 * @mode: the dr_mode of the controller. 202 */ 203 struct rockchip_usb2phy_port { 204 struct phy *phy; 205 unsigned int port_id; 206 bool suspended; 207 bool vbus_attached; 208 bool host_disconnect; 209 int bvalid_irq; 210 int id_irq; 211 int ls_irq; 212 int otg_mux_irq; 213 struct mutex mutex; 214 struct delayed_work chg_work; 215 struct delayed_work otg_sm_work; 216 struct delayed_work sm_work; 217 const struct rockchip_usb2phy_port_cfg *port_cfg; 218 struct notifier_block event_nb; 219 enum usb_otg_state state; 220 enum usb_dr_mode mode; 221 }; 222 223 /** 224 * struct rockchip_usb2phy - usb2.0 phy driver data. 225 * @dev: pointer to device. 226 * @grf: General Register Files regmap. 227 * @usbgrf: USB General Register Files regmap. 228 * @clk: clock struct of phy input clk. 229 * @clk480m: clock struct of phy output clk. 230 * @clk480m_hw: clock struct of phy output clk management. 231 * @phy_reset: phy reset control. 232 * @chg_state: states involved in USB charger detection. 233 * @chg_type: USB charger types. 234 * @dcd_retries: The retry count used to track Data contact 235 * detection process. 236 * @edev: extcon device for notification registration 237 * @irq: muxed interrupt for single irq configuration 238 * @phy_cfg: phy register configuration, assigned by driver data. 239 * @ports: phy port instance. 240 */ 241 struct rockchip_usb2phy { 242 struct device *dev; 243 struct regmap *grf; 244 struct regmap *usbgrf; 245 struct clk *clk; 246 struct clk *clk480m; 247 struct clk_hw clk480m_hw; 248 struct reset_control *phy_reset; 249 enum usb_chg_state chg_state; 250 enum power_supply_type chg_type; 251 u8 dcd_retries; 252 struct extcon_dev *edev; 253 int irq; 254 const struct rockchip_usb2phy_cfg *phy_cfg; 255 struct rockchip_usb2phy_port ports[USB2PHY_NUM_PORTS]; 256 }; 257 258 static inline struct regmap *get_reg_base(struct rockchip_usb2phy *rphy) 259 { 260 return rphy->usbgrf == NULL ? rphy->grf : rphy->usbgrf; 261 } 262 263 static inline int property_enable(struct regmap *base, 264 const struct usb2phy_reg *reg, bool en) 265 { 266 unsigned int val, mask, tmp; 267 268 tmp = en ? reg->enable : reg->disable; 269 mask = GENMASK(reg->bitend, reg->bitstart); 270 val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT); 271 272 return regmap_write(base, reg->offset, val); 273 } 274 275 static inline bool property_enabled(struct regmap *base, 276 const struct usb2phy_reg *reg) 277 { 278 int ret; 279 unsigned int tmp, orig; 280 unsigned int mask = GENMASK(reg->bitend, reg->bitstart); 281 282 ret = regmap_read(base, reg->offset, &orig); 283 if (ret) 284 return false; 285 286 tmp = (orig & mask) >> reg->bitstart; 287 return tmp != reg->disable; 288 } 289 290 static int rockchip_usb2phy_reset(struct rockchip_usb2phy *rphy) 291 { 292 int ret; 293 294 ret = reset_control_assert(rphy->phy_reset); 295 if (ret) 296 return ret; 297 298 udelay(10); 299 300 ret = reset_control_deassert(rphy->phy_reset); 301 if (ret) 302 return ret; 303 304 usleep_range(100, 200); 305 306 return 0; 307 } 308 309 static int rockchip_usb2phy_clk480m_prepare(struct clk_hw *hw) 310 { 311 struct rockchip_usb2phy *rphy = 312 container_of(hw, struct rockchip_usb2phy, clk480m_hw); 313 struct regmap *base = get_reg_base(rphy); 314 int ret; 315 316 /* turn on 480m clk output if it is off */ 317 if (!property_enabled(base, &rphy->phy_cfg->clkout_ctl)) { 318 ret = property_enable(base, &rphy->phy_cfg->clkout_ctl, true); 319 if (ret) 320 return ret; 321 322 /* waiting for the clk become stable */ 323 usleep_range(1200, 1300); 324 } 325 326 return 0; 327 } 328 329 static void rockchip_usb2phy_clk480m_unprepare(struct clk_hw *hw) 330 { 331 struct rockchip_usb2phy *rphy = 332 container_of(hw, struct rockchip_usb2phy, clk480m_hw); 333 struct regmap *base = get_reg_base(rphy); 334 335 /* turn off 480m clk output */ 336 property_enable(base, &rphy->phy_cfg->clkout_ctl, false); 337 } 338 339 static int rockchip_usb2phy_clk480m_prepared(struct clk_hw *hw) 340 { 341 struct rockchip_usb2phy *rphy = 342 container_of(hw, struct rockchip_usb2phy, clk480m_hw); 343 struct regmap *base = get_reg_base(rphy); 344 345 return property_enabled(base, &rphy->phy_cfg->clkout_ctl); 346 } 347 348 static unsigned long 349 rockchip_usb2phy_clk480m_recalc_rate(struct clk_hw *hw, 350 unsigned long parent_rate) 351 { 352 return 480000000; 353 } 354 355 static const struct clk_ops rockchip_usb2phy_clkout_ops = { 356 .prepare = rockchip_usb2phy_clk480m_prepare, 357 .unprepare = rockchip_usb2phy_clk480m_unprepare, 358 .is_prepared = rockchip_usb2phy_clk480m_prepared, 359 .recalc_rate = rockchip_usb2phy_clk480m_recalc_rate, 360 }; 361 362 static void rockchip_usb2phy_clk480m_unregister(void *data) 363 { 364 struct rockchip_usb2phy *rphy = data; 365 366 of_clk_del_provider(rphy->dev->of_node); 367 clk_unregister(rphy->clk480m); 368 } 369 370 static int 371 rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy) 372 { 373 struct device_node *node = rphy->dev->of_node; 374 struct clk_init_data init; 375 const char *clk_name; 376 int ret = 0; 377 378 init.flags = 0; 379 init.name = "clk_usbphy_480m"; 380 init.ops = &rockchip_usb2phy_clkout_ops; 381 382 /* optional override of the clockname */ 383 of_property_read_string(node, "clock-output-names", &init.name); 384 385 if (rphy->clk) { 386 clk_name = __clk_get_name(rphy->clk); 387 init.parent_names = &clk_name; 388 init.num_parents = 1; 389 } else { 390 init.parent_names = NULL; 391 init.num_parents = 0; 392 } 393 394 rphy->clk480m_hw.init = &init; 395 396 /* register the clock */ 397 rphy->clk480m = clk_register(rphy->dev, &rphy->clk480m_hw); 398 if (IS_ERR(rphy->clk480m)) { 399 ret = PTR_ERR(rphy->clk480m); 400 goto err_ret; 401 } 402 403 ret = of_clk_add_provider(node, of_clk_src_simple_get, rphy->clk480m); 404 if (ret < 0) 405 goto err_clk_provider; 406 407 return devm_add_action_or_reset(rphy->dev, rockchip_usb2phy_clk480m_unregister, rphy); 408 409 err_clk_provider: 410 clk_unregister(rphy->clk480m); 411 err_ret: 412 return ret; 413 } 414 415 static int rockchip_usb2phy_extcon_register(struct rockchip_usb2phy *rphy) 416 { 417 int ret; 418 struct device_node *node = rphy->dev->of_node; 419 struct extcon_dev *edev; 420 421 if (of_property_read_bool(node, "extcon")) { 422 edev = extcon_get_edev_by_phandle(rphy->dev, 0); 423 if (IS_ERR(edev)) { 424 if (PTR_ERR(edev) != -EPROBE_DEFER) 425 dev_err(rphy->dev, "Invalid or missing extcon\n"); 426 return PTR_ERR(edev); 427 } 428 } else { 429 /* Initialize extcon device */ 430 edev = devm_extcon_dev_allocate(rphy->dev, 431 rockchip_usb2phy_extcon_cable); 432 433 if (IS_ERR(edev)) 434 return -ENOMEM; 435 436 ret = devm_extcon_dev_register(rphy->dev, edev); 437 if (ret) { 438 dev_err(rphy->dev, "failed to register extcon device\n"); 439 return ret; 440 } 441 } 442 443 rphy->edev = edev; 444 445 return 0; 446 } 447 448 static int rockchip_usb2phy_enable_host_disc_irq(struct rockchip_usb2phy *rphy, 449 struct rockchip_usb2phy_port *rport, 450 bool en) 451 { 452 int ret; 453 454 ret = property_enable(rphy->grf, &rport->port_cfg->disfall_clr, true); 455 if (ret) 456 return ret; 457 458 ret = property_enable(rphy->grf, &rport->port_cfg->disfall_en, en); 459 if (ret) 460 return ret; 461 462 ret = property_enable(rphy->grf, &rport->port_cfg->disrise_clr, true); 463 if (ret) 464 return ret; 465 466 return property_enable(rphy->grf, &rport->port_cfg->disrise_en, en); 467 } 468 469 static int rockchip_usb2phy_init(struct phy *phy) 470 { 471 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 472 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 473 int ret = 0; 474 475 mutex_lock(&rport->mutex); 476 477 if (rport->port_id == USB2PHY_PORT_OTG) { 478 if (rport->mode != USB_DR_MODE_HOST && 479 rport->mode != USB_DR_MODE_UNKNOWN) { 480 /* clear bvalid status and enable bvalid detect irq */ 481 ret = property_enable(rphy->grf, 482 &rport->port_cfg->bvalid_det_clr, 483 true); 484 if (ret) 485 goto out; 486 487 ret = property_enable(rphy->grf, 488 &rport->port_cfg->bvalid_det_en, 489 true); 490 if (ret) 491 goto out; 492 493 /* clear id status and enable id detect irq */ 494 ret = property_enable(rphy->grf, 495 &rport->port_cfg->id_det_clr, 496 true); 497 if (ret) 498 goto out; 499 500 ret = property_enable(rphy->grf, 501 &rport->port_cfg->id_det_en, 502 true); 503 if (ret) 504 goto out; 505 506 schedule_delayed_work(&rport->otg_sm_work, 507 OTG_SCHEDULE_DELAY * 3); 508 } else { 509 /* If OTG works in host only mode, do nothing. */ 510 dev_dbg(&rport->phy->dev, "mode %d\n", rport->mode); 511 } 512 } else if (rport->port_id == USB2PHY_PORT_HOST) { 513 if (rport->port_cfg->disfall_en.offset) { 514 rport->host_disconnect = true; 515 ret = rockchip_usb2phy_enable_host_disc_irq(rphy, rport, true); 516 if (ret) { 517 dev_err(rphy->dev, "failed to enable disconnect irq\n"); 518 goto out; 519 } 520 } 521 522 /* clear linestate and enable linestate detect irq */ 523 ret = property_enable(rphy->grf, 524 &rport->port_cfg->ls_det_clr, true); 525 if (ret) 526 goto out; 527 528 ret = property_enable(rphy->grf, 529 &rport->port_cfg->ls_det_en, true); 530 if (ret) 531 goto out; 532 533 schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY); 534 } 535 536 out: 537 mutex_unlock(&rport->mutex); 538 return ret; 539 } 540 541 static int rockchip_usb2phy_power_on(struct phy *phy) 542 { 543 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 544 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 545 struct regmap *base = get_reg_base(rphy); 546 int ret; 547 548 dev_dbg(&rport->phy->dev, "port power on\n"); 549 550 if (!rport->suspended) 551 return 0; 552 553 ret = clk_prepare_enable(rphy->clk480m); 554 if (ret) 555 return ret; 556 557 ret = property_enable(base, &rport->port_cfg->phy_sus, false); 558 if (ret) { 559 clk_disable_unprepare(rphy->clk480m); 560 return ret; 561 } 562 563 /* 564 * For rk3588, it needs to reset phy when exit from 565 * suspend mode with common_on_n 1'b1(aka REFCLK_LOGIC, 566 * Bias, and PLL blocks are powered down) for lower 567 * power consumption. If you don't want to reset phy, 568 * please keep the common_on_n 1'b0 to set these blocks 569 * remain powered. 570 */ 571 ret = rockchip_usb2phy_reset(rphy); 572 if (ret) 573 return ret; 574 575 /* waiting for the utmi_clk to become stable */ 576 usleep_range(1500, 2000); 577 578 rport->suspended = false; 579 return 0; 580 } 581 582 static int rockchip_usb2phy_power_off(struct phy *phy) 583 { 584 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 585 struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent); 586 struct regmap *base = get_reg_base(rphy); 587 int ret; 588 589 dev_dbg(&rport->phy->dev, "port power off\n"); 590 591 if (rport->suspended) 592 return 0; 593 594 ret = property_enable(base, &rport->port_cfg->phy_sus, true); 595 if (ret) 596 return ret; 597 598 rport->suspended = true; 599 clk_disable_unprepare(rphy->clk480m); 600 601 return 0; 602 } 603 604 static int rockchip_usb2phy_exit(struct phy *phy) 605 { 606 struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy); 607 608 if (rport->port_id == USB2PHY_PORT_OTG && 609 rport->mode != USB_DR_MODE_HOST && 610 rport->mode != USB_DR_MODE_UNKNOWN) { 611 cancel_delayed_work_sync(&rport->otg_sm_work); 612 cancel_delayed_work_sync(&rport->chg_work); 613 } else if (rport->port_id == USB2PHY_PORT_HOST) 614 cancel_delayed_work_sync(&rport->sm_work); 615 616 return 0; 617 } 618 619 static const struct phy_ops rockchip_usb2phy_ops = { 620 .init = rockchip_usb2phy_init, 621 .exit = rockchip_usb2phy_exit, 622 .power_on = rockchip_usb2phy_power_on, 623 .power_off = rockchip_usb2phy_power_off, 624 .owner = THIS_MODULE, 625 }; 626 627 static void rockchip_usb2phy_otg_sm_work(struct work_struct *work) 628 { 629 struct rockchip_usb2phy_port *rport = 630 container_of(work, struct rockchip_usb2phy_port, 631 otg_sm_work.work); 632 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 633 static unsigned int cable; 634 unsigned long delay; 635 bool vbus_attach, sch_work, notify_charger; 636 637 vbus_attach = property_enabled(rphy->grf, 638 &rport->port_cfg->utmi_bvalid); 639 640 sch_work = false; 641 notify_charger = false; 642 delay = OTG_SCHEDULE_DELAY; 643 dev_dbg(&rport->phy->dev, "%s otg sm work\n", 644 usb_otg_state_string(rport->state)); 645 646 switch (rport->state) { 647 case OTG_STATE_UNDEFINED: 648 rport->state = OTG_STATE_B_IDLE; 649 if (!vbus_attach) 650 rockchip_usb2phy_power_off(rport->phy); 651 fallthrough; 652 case OTG_STATE_B_IDLE: 653 if (extcon_get_state(rphy->edev, EXTCON_USB_HOST) > 0) { 654 dev_dbg(&rport->phy->dev, "usb otg host connect\n"); 655 rport->state = OTG_STATE_A_HOST; 656 rockchip_usb2phy_power_on(rport->phy); 657 return; 658 } else if (vbus_attach) { 659 dev_dbg(&rport->phy->dev, "vbus_attach\n"); 660 switch (rphy->chg_state) { 661 case USB_CHG_STATE_UNDEFINED: 662 schedule_delayed_work(&rport->chg_work, 0); 663 return; 664 case USB_CHG_STATE_DETECTED: 665 switch (rphy->chg_type) { 666 case POWER_SUPPLY_TYPE_USB: 667 dev_dbg(&rport->phy->dev, "sdp cable is connected\n"); 668 rockchip_usb2phy_power_on(rport->phy); 669 rport->state = OTG_STATE_B_PERIPHERAL; 670 notify_charger = true; 671 sch_work = true; 672 cable = EXTCON_CHG_USB_SDP; 673 break; 674 case POWER_SUPPLY_TYPE_USB_DCP: 675 dev_dbg(&rport->phy->dev, "dcp cable is connected\n"); 676 rockchip_usb2phy_power_off(rport->phy); 677 notify_charger = true; 678 sch_work = true; 679 cable = EXTCON_CHG_USB_DCP; 680 break; 681 case POWER_SUPPLY_TYPE_USB_CDP: 682 dev_dbg(&rport->phy->dev, "cdp cable is connected\n"); 683 rockchip_usb2phy_power_on(rport->phy); 684 rport->state = OTG_STATE_B_PERIPHERAL; 685 notify_charger = true; 686 sch_work = true; 687 cable = EXTCON_CHG_USB_CDP; 688 break; 689 default: 690 break; 691 } 692 break; 693 default: 694 break; 695 } 696 } else { 697 notify_charger = true; 698 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 699 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 700 } 701 702 if (rport->vbus_attached != vbus_attach) { 703 rport->vbus_attached = vbus_attach; 704 705 if (notify_charger && rphy->edev) { 706 extcon_set_state_sync(rphy->edev, 707 cable, vbus_attach); 708 if (cable == EXTCON_CHG_USB_SDP) 709 extcon_set_state_sync(rphy->edev, 710 EXTCON_USB, 711 vbus_attach); 712 } 713 } 714 break; 715 case OTG_STATE_B_PERIPHERAL: 716 if (!vbus_attach) { 717 dev_dbg(&rport->phy->dev, "usb disconnect\n"); 718 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 719 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 720 rport->state = OTG_STATE_B_IDLE; 721 delay = 0; 722 rockchip_usb2phy_power_off(rport->phy); 723 } 724 sch_work = true; 725 break; 726 case OTG_STATE_A_HOST: 727 if (extcon_get_state(rphy->edev, EXTCON_USB_HOST) == 0) { 728 dev_dbg(&rport->phy->dev, "usb otg host disconnect\n"); 729 rport->state = OTG_STATE_B_IDLE; 730 rockchip_usb2phy_power_off(rport->phy); 731 } 732 break; 733 default: 734 break; 735 } 736 737 if (sch_work) 738 schedule_delayed_work(&rport->otg_sm_work, delay); 739 } 740 741 static const char *chg_to_string(enum power_supply_type chg_type) 742 { 743 switch (chg_type) { 744 case POWER_SUPPLY_TYPE_USB: 745 return "USB_SDP_CHARGER"; 746 case POWER_SUPPLY_TYPE_USB_DCP: 747 return "USB_DCP_CHARGER"; 748 case POWER_SUPPLY_TYPE_USB_CDP: 749 return "USB_CDP_CHARGER"; 750 default: 751 return "INVALID_CHARGER"; 752 } 753 } 754 755 static void rockchip_chg_enable_dcd(struct rockchip_usb2phy *rphy, 756 bool en) 757 { 758 struct regmap *base = get_reg_base(rphy); 759 760 property_enable(base, &rphy->phy_cfg->chg_det.rdm_pdwn_en, en); 761 property_enable(base, &rphy->phy_cfg->chg_det.idp_src_en, en); 762 } 763 764 static void rockchip_chg_enable_primary_det(struct rockchip_usb2phy *rphy, 765 bool en) 766 { 767 struct regmap *base = get_reg_base(rphy); 768 769 property_enable(base, &rphy->phy_cfg->chg_det.vdp_src_en, en); 770 property_enable(base, &rphy->phy_cfg->chg_det.idm_sink_en, en); 771 } 772 773 static void rockchip_chg_enable_secondary_det(struct rockchip_usb2phy *rphy, 774 bool en) 775 { 776 struct regmap *base = get_reg_base(rphy); 777 778 property_enable(base, &rphy->phy_cfg->chg_det.vdm_src_en, en); 779 property_enable(base, &rphy->phy_cfg->chg_det.idp_sink_en, en); 780 } 781 782 #define CHG_DCD_POLL_TIME (100 * HZ / 1000) 783 #define CHG_DCD_MAX_RETRIES 6 784 #define CHG_PRIMARY_DET_TIME (40 * HZ / 1000) 785 #define CHG_SECONDARY_DET_TIME (40 * HZ / 1000) 786 static void rockchip_chg_detect_work(struct work_struct *work) 787 { 788 struct rockchip_usb2phy_port *rport = 789 container_of(work, struct rockchip_usb2phy_port, chg_work.work); 790 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 791 struct regmap *base = get_reg_base(rphy); 792 bool is_dcd, tmout, vout; 793 unsigned long delay; 794 795 dev_dbg(&rport->phy->dev, "chg detection work state = %d\n", 796 rphy->chg_state); 797 switch (rphy->chg_state) { 798 case USB_CHG_STATE_UNDEFINED: 799 if (!rport->suspended) 800 rockchip_usb2phy_power_off(rport->phy); 801 /* put the controller in non-driving mode */ 802 property_enable(base, &rphy->phy_cfg->chg_det.opmode, false); 803 /* Start DCD processing stage 1 */ 804 rockchip_chg_enable_dcd(rphy, true); 805 rphy->chg_state = USB_CHG_STATE_WAIT_FOR_DCD; 806 rphy->dcd_retries = 0; 807 delay = CHG_DCD_POLL_TIME; 808 break; 809 case USB_CHG_STATE_WAIT_FOR_DCD: 810 /* get data contact detection status */ 811 is_dcd = property_enabled(rphy->grf, 812 &rphy->phy_cfg->chg_det.dp_det); 813 tmout = ++rphy->dcd_retries == CHG_DCD_MAX_RETRIES; 814 /* stage 2 */ 815 if (is_dcd || tmout) { 816 /* stage 4 */ 817 /* Turn off DCD circuitry */ 818 rockchip_chg_enable_dcd(rphy, false); 819 /* Voltage Source on DP, Probe on DM */ 820 rockchip_chg_enable_primary_det(rphy, true); 821 delay = CHG_PRIMARY_DET_TIME; 822 rphy->chg_state = USB_CHG_STATE_DCD_DONE; 823 } else { 824 /* stage 3 */ 825 delay = CHG_DCD_POLL_TIME; 826 } 827 break; 828 case USB_CHG_STATE_DCD_DONE: 829 vout = property_enabled(rphy->grf, 830 &rphy->phy_cfg->chg_det.cp_det); 831 rockchip_chg_enable_primary_det(rphy, false); 832 if (vout) { 833 /* Voltage Source on DM, Probe on DP */ 834 rockchip_chg_enable_secondary_det(rphy, true); 835 delay = CHG_SECONDARY_DET_TIME; 836 rphy->chg_state = USB_CHG_STATE_PRIMARY_DONE; 837 } else { 838 if (rphy->dcd_retries == CHG_DCD_MAX_RETRIES) { 839 /* floating charger found */ 840 rphy->chg_type = POWER_SUPPLY_TYPE_USB_DCP; 841 rphy->chg_state = USB_CHG_STATE_DETECTED; 842 delay = 0; 843 } else { 844 rphy->chg_type = POWER_SUPPLY_TYPE_USB; 845 rphy->chg_state = USB_CHG_STATE_DETECTED; 846 delay = 0; 847 } 848 } 849 break; 850 case USB_CHG_STATE_PRIMARY_DONE: 851 vout = property_enabled(rphy->grf, 852 &rphy->phy_cfg->chg_det.dcp_det); 853 /* Turn off voltage source */ 854 rockchip_chg_enable_secondary_det(rphy, false); 855 if (vout) 856 rphy->chg_type = POWER_SUPPLY_TYPE_USB_DCP; 857 else 858 rphy->chg_type = POWER_SUPPLY_TYPE_USB_CDP; 859 fallthrough; 860 case USB_CHG_STATE_SECONDARY_DONE: 861 rphy->chg_state = USB_CHG_STATE_DETECTED; 862 fallthrough; 863 case USB_CHG_STATE_DETECTED: 864 /* put the controller in normal mode */ 865 property_enable(base, &rphy->phy_cfg->chg_det.opmode, true); 866 rockchip_usb2phy_otg_sm_work(&rport->otg_sm_work.work); 867 dev_dbg(&rport->phy->dev, "charger = %s\n", 868 chg_to_string(rphy->chg_type)); 869 return; 870 default: 871 return; 872 } 873 874 schedule_delayed_work(&rport->chg_work, delay); 875 } 876 877 /* 878 * The function manage host-phy port state and suspend/resume phy port 879 * to save power. 880 * 881 * we rely on utmi_linestate and utmi_hostdisconnect to identify whether 882 * devices is disconnect or not. Besides, we do not need care it is FS/LS 883 * disconnected or HS disconnected, actually, we just only need get the 884 * device is disconnected at last through rearm the delayed work, 885 * to suspend the phy port in _PHY_STATE_DISCONNECT_ case. 886 * 887 * NOTE: It may invoke *phy_powr_off or *phy_power_on which will invoke 888 * some clk related APIs, so do not invoke it from interrupt context directly. 889 */ 890 static void rockchip_usb2phy_sm_work(struct work_struct *work) 891 { 892 struct rockchip_usb2phy_port *rport = 893 container_of(work, struct rockchip_usb2phy_port, sm_work.work); 894 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 895 unsigned int sh, ul, uhd, state; 896 unsigned int ul_mask, uhd_mask; 897 int ret; 898 899 mutex_lock(&rport->mutex); 900 901 ret = regmap_read(rphy->grf, rport->port_cfg->utmi_ls.offset, &ul); 902 if (ret < 0) 903 goto next_schedule; 904 905 ul_mask = GENMASK(rport->port_cfg->utmi_ls.bitend, 906 rport->port_cfg->utmi_ls.bitstart); 907 908 if (rport->port_cfg->utmi_hstdet.offset) { 909 ret = regmap_read(rphy->grf, rport->port_cfg->utmi_hstdet.offset, &uhd); 910 if (ret < 0) 911 goto next_schedule; 912 913 uhd_mask = GENMASK(rport->port_cfg->utmi_hstdet.bitend, 914 rport->port_cfg->utmi_hstdet.bitstart); 915 916 sh = rport->port_cfg->utmi_hstdet.bitend - 917 rport->port_cfg->utmi_hstdet.bitstart + 1; 918 /* stitch on utmi_ls and utmi_hstdet as phy state */ 919 state = ((uhd & uhd_mask) >> rport->port_cfg->utmi_hstdet.bitstart) | 920 (((ul & ul_mask) >> rport->port_cfg->utmi_ls.bitstart) << sh); 921 } else { 922 state = ((ul & ul_mask) >> rport->port_cfg->utmi_ls.bitstart) << 1 | 923 rport->host_disconnect; 924 } 925 926 switch (state) { 927 case PHY_STATE_HS_ONLINE: 928 dev_dbg(&rport->phy->dev, "HS online\n"); 929 break; 930 case PHY_STATE_FS_LS_ONLINE: 931 /* 932 * For FS/LS device, the online state share with connect state 933 * from utmi_ls and utmi_hstdet register, so we distinguish 934 * them via suspended flag. 935 * 936 * Plus, there are two cases, one is D- Line pull-up, and D+ 937 * line pull-down, the state is 4; another is D+ line pull-up, 938 * and D- line pull-down, the state is 2. 939 */ 940 if (!rport->suspended) { 941 /* D- line pull-up, D+ line pull-down */ 942 dev_dbg(&rport->phy->dev, "FS/LS online\n"); 943 break; 944 } 945 fallthrough; 946 case PHY_STATE_CONNECT: 947 if (rport->suspended) { 948 dev_dbg(&rport->phy->dev, "Connected\n"); 949 rockchip_usb2phy_power_on(rport->phy); 950 rport->suspended = false; 951 } else { 952 /* D+ line pull-up, D- line pull-down */ 953 dev_dbg(&rport->phy->dev, "FS/LS online\n"); 954 } 955 break; 956 case PHY_STATE_DISCONNECT: 957 if (!rport->suspended) { 958 dev_dbg(&rport->phy->dev, "Disconnected\n"); 959 rockchip_usb2phy_power_off(rport->phy); 960 rport->suspended = true; 961 } 962 963 /* 964 * activate the linestate detection to get the next device 965 * plug-in irq. 966 */ 967 property_enable(rphy->grf, &rport->port_cfg->ls_det_clr, true); 968 property_enable(rphy->grf, &rport->port_cfg->ls_det_en, true); 969 970 /* 971 * we don't need to rearm the delayed work when the phy port 972 * is suspended. 973 */ 974 mutex_unlock(&rport->mutex); 975 return; 976 default: 977 dev_dbg(&rport->phy->dev, "unknown phy state\n"); 978 break; 979 } 980 981 next_schedule: 982 mutex_unlock(&rport->mutex); 983 schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY); 984 } 985 986 static irqreturn_t rockchip_usb2phy_linestate_irq(int irq, void *data) 987 { 988 struct rockchip_usb2phy_port *rport = data; 989 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 990 991 if (!property_enabled(rphy->grf, &rport->port_cfg->ls_det_st)) 992 return IRQ_NONE; 993 994 mutex_lock(&rport->mutex); 995 996 /* disable linestate detect irq and clear its status */ 997 property_enable(rphy->grf, &rport->port_cfg->ls_det_en, false); 998 property_enable(rphy->grf, &rport->port_cfg->ls_det_clr, true); 999 1000 mutex_unlock(&rport->mutex); 1001 1002 /* 1003 * In this case for host phy port, a new device is plugged in, 1004 * meanwhile, if the phy port is suspended, we need rearm the work to 1005 * resume it and mange its states; otherwise, we do nothing about that. 1006 */ 1007 if (rport->suspended && rport->port_id == USB2PHY_PORT_HOST) 1008 rockchip_usb2phy_sm_work(&rport->sm_work.work); 1009 1010 return IRQ_HANDLED; 1011 } 1012 1013 static irqreturn_t rockchip_usb2phy_bvalid_irq(int irq, void *data) 1014 { 1015 struct rockchip_usb2phy_port *rport = data; 1016 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 1017 1018 if (!property_enabled(rphy->grf, &rport->port_cfg->bvalid_det_st)) 1019 return IRQ_NONE; 1020 1021 /* clear bvalid detect irq pending status */ 1022 property_enable(rphy->grf, &rport->port_cfg->bvalid_det_clr, true); 1023 1024 rockchip_usb2phy_otg_sm_work(&rport->otg_sm_work.work); 1025 1026 return IRQ_HANDLED; 1027 } 1028 1029 static irqreturn_t rockchip_usb2phy_id_irq(int irq, void *data) 1030 { 1031 struct rockchip_usb2phy_port *rport = data; 1032 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 1033 bool id; 1034 1035 if (!property_enabled(rphy->grf, &rport->port_cfg->id_det_st)) 1036 return IRQ_NONE; 1037 1038 /* clear id detect irq pending status */ 1039 property_enable(rphy->grf, &rport->port_cfg->id_det_clr, true); 1040 1041 id = property_enabled(rphy->grf, &rport->port_cfg->utmi_id); 1042 extcon_set_state_sync(rphy->edev, EXTCON_USB_HOST, !id); 1043 1044 return IRQ_HANDLED; 1045 } 1046 1047 static irqreturn_t rockchip_usb2phy_otg_mux_irq(int irq, void *data) 1048 { 1049 irqreturn_t ret = IRQ_NONE; 1050 1051 ret |= rockchip_usb2phy_bvalid_irq(irq, data); 1052 ret |= rockchip_usb2phy_id_irq(irq, data); 1053 1054 return ret; 1055 } 1056 1057 static irqreturn_t rockchip_usb2phy_host_disc_irq(int irq, void *data) 1058 { 1059 struct rockchip_usb2phy_port *rport = data; 1060 struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent); 1061 1062 if (!property_enabled(rphy->grf, &rport->port_cfg->disfall_st) && 1063 !property_enabled(rphy->grf, &rport->port_cfg->disrise_st)) 1064 return IRQ_NONE; 1065 1066 mutex_lock(&rport->mutex); 1067 1068 /* clear disconnect fall or rise detect irq pending status */ 1069 if (property_enabled(rphy->grf, &rport->port_cfg->disfall_st)) { 1070 property_enable(rphy->grf, &rport->port_cfg->disfall_clr, true); 1071 rport->host_disconnect = false; 1072 } else if (property_enabled(rphy->grf, &rport->port_cfg->disrise_st)) { 1073 property_enable(rphy->grf, &rport->port_cfg->disrise_clr, true); 1074 rport->host_disconnect = true; 1075 } 1076 1077 mutex_unlock(&rport->mutex); 1078 1079 return IRQ_HANDLED; 1080 } 1081 1082 static irqreturn_t rockchip_usb2phy_irq(int irq, void *data) 1083 { 1084 struct rockchip_usb2phy *rphy = data; 1085 struct rockchip_usb2phy_port *rport; 1086 irqreturn_t ret = IRQ_NONE; 1087 unsigned int index; 1088 1089 for (index = 0; index < rphy->phy_cfg->num_ports; index++) { 1090 rport = &rphy->ports[index]; 1091 if (!rport->phy) 1092 continue; 1093 1094 if (rport->port_id == USB2PHY_PORT_HOST && 1095 rport->port_cfg->disfall_en.offset) 1096 ret |= rockchip_usb2phy_host_disc_irq(irq, rport); 1097 1098 switch (rport->port_id) { 1099 case USB2PHY_PORT_OTG: 1100 if (rport->mode != USB_DR_MODE_HOST && 1101 rport->mode != USB_DR_MODE_UNKNOWN) 1102 ret |= rockchip_usb2phy_otg_mux_irq(irq, rport); 1103 break; 1104 case USB2PHY_PORT_HOST: 1105 ret |= rockchip_usb2phy_linestate_irq(irq, rport); 1106 break; 1107 } 1108 } 1109 1110 return ret; 1111 } 1112 1113 static int rockchip_usb2phy_port_irq_init(struct rockchip_usb2phy *rphy, 1114 struct rockchip_usb2phy_port *rport, 1115 struct device_node *child_np) 1116 { 1117 int ret; 1118 1119 /* 1120 * If the usb2 phy used combined irq for otg and host port, 1121 * don't need to init otg and host port irq separately. 1122 */ 1123 if (rphy->irq > 0) 1124 return 0; 1125 1126 switch (rport->port_id) { 1127 case USB2PHY_PORT_HOST: 1128 rport->ls_irq = of_irq_get_byname(child_np, "linestate"); 1129 if (rport->ls_irq < 0) { 1130 dev_err(rphy->dev, "no linestate irq provided\n"); 1131 return rport->ls_irq; 1132 } 1133 1134 ret = devm_request_threaded_irq(rphy->dev, rport->ls_irq, NULL, 1135 rockchip_usb2phy_linestate_irq, 1136 IRQF_ONESHOT, 1137 "rockchip_usb2phy", rport); 1138 if (ret) { 1139 dev_err(rphy->dev, "failed to request linestate irq handle\n"); 1140 return ret; 1141 } 1142 break; 1143 case USB2PHY_PORT_OTG: 1144 /* 1145 * Some SoCs use one interrupt with otg-id/otg-bvalid/linestate 1146 * interrupts muxed together, so probe the otg-mux interrupt first, 1147 * if not found, then look for the regular interrupts one by one. 1148 */ 1149 rport->otg_mux_irq = of_irq_get_byname(child_np, "otg-mux"); 1150 if (rport->otg_mux_irq > 0) { 1151 ret = devm_request_threaded_irq(rphy->dev, rport->otg_mux_irq, 1152 NULL, 1153 rockchip_usb2phy_otg_mux_irq, 1154 IRQF_ONESHOT, 1155 "rockchip_usb2phy_otg", 1156 rport); 1157 if (ret) { 1158 dev_err(rphy->dev, 1159 "failed to request otg-mux irq handle\n"); 1160 return ret; 1161 } 1162 } else { 1163 rport->bvalid_irq = of_irq_get_byname(child_np, "otg-bvalid"); 1164 if (rport->bvalid_irq < 0) { 1165 dev_err(rphy->dev, "no vbus valid irq provided\n"); 1166 ret = rport->bvalid_irq; 1167 return ret; 1168 } 1169 1170 ret = devm_request_threaded_irq(rphy->dev, rport->bvalid_irq, 1171 NULL, 1172 rockchip_usb2phy_bvalid_irq, 1173 IRQF_ONESHOT, 1174 "rockchip_usb2phy_bvalid", 1175 rport); 1176 if (ret) { 1177 dev_err(rphy->dev, 1178 "failed to request otg-bvalid irq handle\n"); 1179 return ret; 1180 } 1181 1182 rport->id_irq = of_irq_get_byname(child_np, "otg-id"); 1183 if (rport->id_irq < 0) { 1184 dev_err(rphy->dev, "no otg-id irq provided\n"); 1185 ret = rport->id_irq; 1186 return ret; 1187 } 1188 1189 ret = devm_request_threaded_irq(rphy->dev, rport->id_irq, 1190 NULL, 1191 rockchip_usb2phy_id_irq, 1192 IRQF_ONESHOT, 1193 "rockchip_usb2phy_id", 1194 rport); 1195 if (ret) { 1196 dev_err(rphy->dev, 1197 "failed to request otg-id irq handle\n"); 1198 return ret; 1199 } 1200 } 1201 break; 1202 default: 1203 return -EINVAL; 1204 } 1205 1206 return 0; 1207 } 1208 1209 static int rockchip_usb2phy_host_port_init(struct rockchip_usb2phy *rphy, 1210 struct rockchip_usb2phy_port *rport, 1211 struct device_node *child_np) 1212 { 1213 int ret; 1214 1215 rport->port_id = USB2PHY_PORT_HOST; 1216 rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_HOST]; 1217 rport->suspended = true; 1218 1219 mutex_init(&rport->mutex); 1220 INIT_DELAYED_WORK(&rport->sm_work, rockchip_usb2phy_sm_work); 1221 1222 ret = rockchip_usb2phy_port_irq_init(rphy, rport, child_np); 1223 if (ret) { 1224 dev_err(rphy->dev, "failed to setup host irq\n"); 1225 return ret; 1226 } 1227 1228 return 0; 1229 } 1230 1231 static int rockchip_otg_event(struct notifier_block *nb, 1232 unsigned long event, void *ptr) 1233 { 1234 struct rockchip_usb2phy_port *rport = 1235 container_of(nb, struct rockchip_usb2phy_port, event_nb); 1236 1237 schedule_delayed_work(&rport->otg_sm_work, OTG_SCHEDULE_DELAY); 1238 1239 return NOTIFY_DONE; 1240 } 1241 1242 static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy, 1243 struct rockchip_usb2phy_port *rport, 1244 struct device_node *child_np) 1245 { 1246 int ret, id; 1247 1248 rport->port_id = USB2PHY_PORT_OTG; 1249 rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_OTG]; 1250 rport->state = OTG_STATE_UNDEFINED; 1251 1252 /* 1253 * set suspended flag to true, but actually don't 1254 * put phy in suspend mode, it aims to enable usb 1255 * phy and clock in power_on() called by usb controller 1256 * driver during probe. 1257 */ 1258 rport->suspended = true; 1259 rport->vbus_attached = false; 1260 1261 mutex_init(&rport->mutex); 1262 1263 rport->mode = of_usb_get_dr_mode_by_phy(child_np, -1); 1264 if (rport->mode == USB_DR_MODE_HOST || 1265 rport->mode == USB_DR_MODE_UNKNOWN) { 1266 ret = 0; 1267 goto out; 1268 } 1269 1270 INIT_DELAYED_WORK(&rport->chg_work, rockchip_chg_detect_work); 1271 INIT_DELAYED_WORK(&rport->otg_sm_work, rockchip_usb2phy_otg_sm_work); 1272 1273 ret = rockchip_usb2phy_port_irq_init(rphy, rport, child_np); 1274 if (ret) { 1275 dev_err(rphy->dev, "failed to init irq for host port\n"); 1276 goto out; 1277 } 1278 1279 if (!IS_ERR(rphy->edev)) { 1280 rport->event_nb.notifier_call = rockchip_otg_event; 1281 1282 ret = devm_extcon_register_notifier(rphy->dev, rphy->edev, 1283 EXTCON_USB_HOST, &rport->event_nb); 1284 if (ret) { 1285 dev_err(rphy->dev, "register USB HOST notifier failed\n"); 1286 goto out; 1287 } 1288 1289 if (!of_property_read_bool(rphy->dev->of_node, "extcon")) { 1290 /* do initial sync of usb state */ 1291 id = property_enabled(rphy->grf, &rport->port_cfg->utmi_id); 1292 extcon_set_state_sync(rphy->edev, EXTCON_USB_HOST, !id); 1293 } 1294 } 1295 1296 out: 1297 return ret; 1298 } 1299 1300 static int rockchip_usb2phy_probe(struct platform_device *pdev) 1301 { 1302 struct device *dev = &pdev->dev; 1303 struct device_node *np = dev->of_node; 1304 struct device_node *child_np; 1305 struct phy_provider *provider; 1306 struct rockchip_usb2phy *rphy; 1307 const struct rockchip_usb2phy_cfg *phy_cfgs; 1308 unsigned int reg; 1309 int index, ret; 1310 1311 rphy = devm_kzalloc(dev, sizeof(*rphy), GFP_KERNEL); 1312 if (!rphy) 1313 return -ENOMEM; 1314 1315 if (!dev->parent || !dev->parent->of_node) { 1316 rphy->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,usbgrf"); 1317 if (IS_ERR(rphy->grf)) { 1318 dev_err(dev, "failed to locate usbgrf\n"); 1319 return PTR_ERR(rphy->grf); 1320 } 1321 } 1322 1323 else { 1324 rphy->grf = syscon_node_to_regmap(dev->parent->of_node); 1325 if (IS_ERR(rphy->grf)) 1326 return PTR_ERR(rphy->grf); 1327 } 1328 1329 if (of_device_is_compatible(np, "rockchip,rv1108-usb2phy")) { 1330 rphy->usbgrf = 1331 syscon_regmap_lookup_by_phandle(dev->of_node, 1332 "rockchip,usbgrf"); 1333 if (IS_ERR(rphy->usbgrf)) 1334 return PTR_ERR(rphy->usbgrf); 1335 } else { 1336 rphy->usbgrf = NULL; 1337 } 1338 1339 if (of_property_read_u32_index(np, "reg", 0, ®)) { 1340 dev_err(dev, "the reg property is not assigned in %pOFn node\n", 1341 np); 1342 return -EINVAL; 1343 } 1344 1345 /* support address_cells=2 */ 1346 if (of_property_count_u32_elems(np, "reg") > 2 && reg == 0) { 1347 if (of_property_read_u32_index(np, "reg", 1, ®)) { 1348 dev_err(dev, "the reg property is not assigned in %pOFn node\n", 1349 np); 1350 return -EINVAL; 1351 } 1352 } 1353 1354 rphy->dev = dev; 1355 phy_cfgs = device_get_match_data(dev); 1356 rphy->chg_state = USB_CHG_STATE_UNDEFINED; 1357 rphy->chg_type = POWER_SUPPLY_TYPE_UNKNOWN; 1358 rphy->irq = platform_get_irq_optional(pdev, 0); 1359 platform_set_drvdata(pdev, rphy); 1360 1361 if (!phy_cfgs) 1362 return dev_err_probe(dev, -EINVAL, "phy configs are not assigned!\n"); 1363 1364 ret = rockchip_usb2phy_extcon_register(rphy); 1365 if (ret) 1366 return ret; 1367 1368 /* find out a proper config which can be matched with dt. */ 1369 index = 0; 1370 do { 1371 if (phy_cfgs[index].reg == reg) { 1372 rphy->phy_cfg = &phy_cfgs[index]; 1373 break; 1374 } 1375 1376 ++index; 1377 } while (phy_cfgs[index].reg); 1378 1379 if (!rphy->phy_cfg) { 1380 dev_err(dev, "could not find phy config for reg=0x%08x\n", reg); 1381 return -EINVAL; 1382 } 1383 1384 rphy->phy_reset = devm_reset_control_get_optional(dev, "phy"); 1385 if (IS_ERR(rphy->phy_reset)) 1386 return PTR_ERR(rphy->phy_reset); 1387 1388 rphy->clk = devm_clk_get_optional_enabled(dev, "phyclk"); 1389 if (IS_ERR(rphy->clk)) { 1390 return dev_err_probe(&pdev->dev, PTR_ERR(rphy->clk), 1391 "failed to get phyclk\n"); 1392 } 1393 1394 ret = rockchip_usb2phy_clk480m_register(rphy); 1395 if (ret) { 1396 dev_err(dev, "failed to register 480m output clock\n"); 1397 return ret; 1398 } 1399 1400 if (rphy->phy_cfg->phy_tuning) { 1401 ret = rphy->phy_cfg->phy_tuning(rphy); 1402 if (ret) 1403 return ret; 1404 } 1405 1406 index = 0; 1407 for_each_available_child_of_node(np, child_np) { 1408 struct rockchip_usb2phy_port *rport = &rphy->ports[index]; 1409 struct phy *phy; 1410 1411 /* This driver aims to support both otg-port and host-port */ 1412 if (!of_node_name_eq(child_np, "host-port") && 1413 !of_node_name_eq(child_np, "otg-port")) 1414 goto next_child; 1415 1416 phy = devm_phy_create(dev, child_np, &rockchip_usb2phy_ops); 1417 if (IS_ERR(phy)) { 1418 dev_err_probe(dev, PTR_ERR(phy), "failed to create phy\n"); 1419 ret = PTR_ERR(phy); 1420 goto put_child; 1421 } 1422 1423 rport->phy = phy; 1424 phy_set_drvdata(rport->phy, rport); 1425 1426 /* initialize otg/host port separately */ 1427 if (of_node_name_eq(child_np, "host-port")) { 1428 ret = rockchip_usb2phy_host_port_init(rphy, rport, 1429 child_np); 1430 if (ret) 1431 goto put_child; 1432 } else { 1433 ret = rockchip_usb2phy_otg_port_init(rphy, rport, 1434 child_np); 1435 if (ret) 1436 goto put_child; 1437 } 1438 1439 next_child: 1440 /* to prevent out of boundary */ 1441 if (++index >= rphy->phy_cfg->num_ports) { 1442 of_node_put(child_np); 1443 break; 1444 } 1445 } 1446 1447 provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); 1448 1449 if (rphy->irq > 0) { 1450 ret = devm_request_threaded_irq(rphy->dev, rphy->irq, NULL, 1451 rockchip_usb2phy_irq, 1452 IRQF_ONESHOT, 1453 "rockchip_usb2phy", 1454 rphy); 1455 if (ret) { 1456 dev_err(rphy->dev, 1457 "failed to request usb2phy irq handle\n"); 1458 goto put_child; 1459 } 1460 } 1461 1462 return PTR_ERR_OR_ZERO(provider); 1463 1464 put_child: 1465 of_node_put(child_np); 1466 return ret; 1467 } 1468 1469 static int rk3588_usb2phy_tuning(struct rockchip_usb2phy *rphy) 1470 { 1471 int ret; 1472 bool usb3otg = false; 1473 /* 1474 * utmi_termselect = 1'b1 (en FS terminations) 1475 * utmi_xcvrselect = 2'b01 (FS transceiver) 1476 */ 1477 int suspend_cfg = 0x14; 1478 1479 if (rphy->phy_cfg->reg == 0x0000 || rphy->phy_cfg->reg == 0x4000) { 1480 /* USB2 config for USB3_0 and USB3_1 */ 1481 suspend_cfg |= 0x01; /* utmi_opmode = 2'b01 (no-driving) */ 1482 usb3otg = true; 1483 } else if (rphy->phy_cfg->reg == 0x8000 || rphy->phy_cfg->reg == 0xc000) { 1484 /* USB2 config for USB2_0 and USB2_1 */ 1485 suspend_cfg |= 0x00; /* utmi_opmode = 2'b00 (normal) */ 1486 } else { 1487 return -EINVAL; 1488 } 1489 1490 /* Deassert SIDDQ to power on analog block */ 1491 ret = regmap_write(rphy->grf, 0x0008, GENMASK(29, 29) | 0x0000); 1492 if (ret) 1493 return ret; 1494 1495 /* Do reset after exit IDDQ mode */ 1496 ret = rockchip_usb2phy_reset(rphy); 1497 if (ret) 1498 return ret; 1499 1500 /* suspend configuration */ 1501 ret |= regmap_write(rphy->grf, 0x000c, GENMASK(20, 16) | suspend_cfg); 1502 1503 /* HS DC Voltage Level Adjustment 4'b1001 : +5.89% */ 1504 ret |= regmap_write(rphy->grf, 0x0004, GENMASK(27, 24) | 0x0900); 1505 1506 /* HS Transmitter Pre-Emphasis Current Control 2'b10 : 2x */ 1507 ret |= regmap_write(rphy->grf, 0x0008, GENMASK(20, 19) | 0x0010); 1508 1509 if (!usb3otg) 1510 return ret; 1511 1512 /* Pullup iddig pin for USB3_0 OTG mode */ 1513 ret |= regmap_write(rphy->grf, 0x0010, GENMASK(17, 16) | 0x0003); 1514 1515 return ret; 1516 } 1517 1518 static const struct rockchip_usb2phy_cfg rk3228_phy_cfgs[] = { 1519 { 1520 .reg = 0x760, 1521 .num_ports = 2, 1522 .clkout_ctl = { 0x0768, 4, 4, 1, 0 }, 1523 .port_cfgs = { 1524 [USB2PHY_PORT_OTG] = { 1525 .phy_sus = { 0x0760, 15, 0, 0, 0x1d1 }, 1526 .bvalid_det_en = { 0x0680, 3, 3, 0, 1 }, 1527 .bvalid_det_st = { 0x0690, 3, 3, 0, 1 }, 1528 .bvalid_det_clr = { 0x06a0, 3, 3, 0, 1 }, 1529 .id_det_en = { 0x0680, 6, 5, 0, 3 }, 1530 .id_det_st = { 0x0690, 6, 5, 0, 3 }, 1531 .id_det_clr = { 0x06a0, 6, 5, 0, 3 }, 1532 .ls_det_en = { 0x0680, 2, 2, 0, 1 }, 1533 .ls_det_st = { 0x0690, 2, 2, 0, 1 }, 1534 .ls_det_clr = { 0x06a0, 2, 2, 0, 1 }, 1535 .utmi_bvalid = { 0x0480, 4, 4, 0, 1 }, 1536 .utmi_id = { 0x0480, 1, 1, 0, 1 }, 1537 .utmi_ls = { 0x0480, 3, 2, 0, 1 }, 1538 }, 1539 [USB2PHY_PORT_HOST] = { 1540 .phy_sus = { 0x0764, 15, 0, 0, 0x1d1 }, 1541 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1542 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1543 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 } 1544 } 1545 }, 1546 .chg_det = { 1547 .opmode = { 0x0760, 3, 0, 5, 1 }, 1548 .cp_det = { 0x0884, 4, 4, 0, 1 }, 1549 .dcp_det = { 0x0884, 3, 3, 0, 1 }, 1550 .dp_det = { 0x0884, 5, 5, 0, 1 }, 1551 .idm_sink_en = { 0x0768, 8, 8, 0, 1 }, 1552 .idp_sink_en = { 0x0768, 7, 7, 0, 1 }, 1553 .idp_src_en = { 0x0768, 9, 9, 0, 1 }, 1554 .rdm_pdwn_en = { 0x0768, 10, 10, 0, 1 }, 1555 .vdm_src_en = { 0x0768, 12, 12, 0, 1 }, 1556 .vdp_src_en = { 0x0768, 11, 11, 0, 1 }, 1557 }, 1558 }, 1559 { 1560 .reg = 0x800, 1561 .num_ports = 2, 1562 .clkout_ctl = { 0x0808, 4, 4, 1, 0 }, 1563 .port_cfgs = { 1564 [USB2PHY_PORT_OTG] = { 1565 .phy_sus = { 0x800, 15, 0, 0, 0x1d1 }, 1566 .ls_det_en = { 0x0684, 0, 0, 0, 1 }, 1567 .ls_det_st = { 0x0694, 0, 0, 0, 1 }, 1568 .ls_det_clr = { 0x06a4, 0, 0, 0, 1 } 1569 }, 1570 [USB2PHY_PORT_HOST] = { 1571 .phy_sus = { 0x804, 15, 0, 0, 0x1d1 }, 1572 .ls_det_en = { 0x0684, 1, 1, 0, 1 }, 1573 .ls_det_st = { 0x0694, 1, 1, 0, 1 }, 1574 .ls_det_clr = { 0x06a4, 1, 1, 0, 1 } 1575 } 1576 }, 1577 }, 1578 { /* sentinel */ } 1579 }; 1580 1581 static const struct rockchip_usb2phy_cfg rk3308_phy_cfgs[] = { 1582 { 1583 .reg = 0x100, 1584 .num_ports = 2, 1585 .clkout_ctl = { 0x108, 4, 4, 1, 0 }, 1586 .port_cfgs = { 1587 [USB2PHY_PORT_OTG] = { 1588 .phy_sus = { 0x0100, 8, 0, 0, 0x1d1 }, 1589 .bvalid_det_en = { 0x3020, 3, 2, 0, 3 }, 1590 .bvalid_det_st = { 0x3024, 3, 2, 0, 3 }, 1591 .bvalid_det_clr = { 0x3028, 3, 2, 0, 3 }, 1592 .id_det_en = { 0x3020, 5, 4, 0, 3 }, 1593 .id_det_st = { 0x3024, 5, 4, 0, 3 }, 1594 .id_det_clr = { 0x3028, 5, 4, 0, 3 }, 1595 .ls_det_en = { 0x3020, 0, 0, 0, 1 }, 1596 .ls_det_st = { 0x3024, 0, 0, 0, 1 }, 1597 .ls_det_clr = { 0x3028, 0, 0, 0, 1 }, 1598 .utmi_avalid = { 0x0120, 10, 10, 0, 1 }, 1599 .utmi_bvalid = { 0x0120, 9, 9, 0, 1 }, 1600 .utmi_id = { 0x0120, 6, 6, 0, 1 }, 1601 .utmi_ls = { 0x0120, 5, 4, 0, 1 }, 1602 }, 1603 [USB2PHY_PORT_HOST] = { 1604 .phy_sus = { 0x0104, 8, 0, 0, 0x1d1 }, 1605 .ls_det_en = { 0x3020, 1, 1, 0, 1 }, 1606 .ls_det_st = { 0x3024, 1, 1, 0, 1 }, 1607 .ls_det_clr = { 0x3028, 1, 1, 0, 1 }, 1608 .utmi_ls = { 0x0120, 17, 16, 0, 1 }, 1609 .utmi_hstdet = { 0x0120, 19, 19, 0, 1 } 1610 } 1611 }, 1612 .chg_det = { 1613 .opmode = { 0x0100, 3, 0, 5, 1 }, 1614 .cp_det = { 0x0120, 24, 24, 0, 1 }, 1615 .dcp_det = { 0x0120, 23, 23, 0, 1 }, 1616 .dp_det = { 0x0120, 25, 25, 0, 1 }, 1617 .idm_sink_en = { 0x0108, 8, 8, 0, 1 }, 1618 .idp_sink_en = { 0x0108, 7, 7, 0, 1 }, 1619 .idp_src_en = { 0x0108, 9, 9, 0, 1 }, 1620 .rdm_pdwn_en = { 0x0108, 10, 10, 0, 1 }, 1621 .vdm_src_en = { 0x0108, 12, 12, 0, 1 }, 1622 .vdp_src_en = { 0x0108, 11, 11, 0, 1 }, 1623 }, 1624 }, 1625 { /* sentinel */ } 1626 }; 1627 1628 static const struct rockchip_usb2phy_cfg rk3328_phy_cfgs[] = { 1629 { 1630 .reg = 0x100, 1631 .num_ports = 2, 1632 .clkout_ctl = { 0x108, 4, 4, 1, 0 }, 1633 .port_cfgs = { 1634 [USB2PHY_PORT_OTG] = { 1635 .phy_sus = { 0x0100, 15, 0, 0, 0x1d1 }, 1636 .bvalid_det_en = { 0x0110, 3, 2, 0, 3 }, 1637 .bvalid_det_st = { 0x0114, 3, 2, 0, 3 }, 1638 .bvalid_det_clr = { 0x0118, 3, 2, 0, 3 }, 1639 .id_det_en = { 0x0110, 5, 4, 0, 3 }, 1640 .id_det_st = { 0x0114, 5, 4, 0, 3 }, 1641 .id_det_clr = { 0x0118, 5, 4, 0, 3 }, 1642 .ls_det_en = { 0x0110, 0, 0, 0, 1 }, 1643 .ls_det_st = { 0x0114, 0, 0, 0, 1 }, 1644 .ls_det_clr = { 0x0118, 0, 0, 0, 1 }, 1645 .utmi_avalid = { 0x0120, 10, 10, 0, 1 }, 1646 .utmi_bvalid = { 0x0120, 9, 9, 0, 1 }, 1647 .utmi_id = { 0x0120, 6, 6, 0, 1 }, 1648 .utmi_ls = { 0x0120, 5, 4, 0, 1 }, 1649 }, 1650 [USB2PHY_PORT_HOST] = { 1651 .phy_sus = { 0x104, 15, 0, 0, 0x1d1 }, 1652 .ls_det_en = { 0x110, 1, 1, 0, 1 }, 1653 .ls_det_st = { 0x114, 1, 1, 0, 1 }, 1654 .ls_det_clr = { 0x118, 1, 1, 0, 1 }, 1655 .utmi_ls = { 0x120, 17, 16, 0, 1 }, 1656 .utmi_hstdet = { 0x120, 19, 19, 0, 1 } 1657 } 1658 }, 1659 .chg_det = { 1660 .opmode = { 0x0100, 3, 0, 5, 1 }, 1661 .cp_det = { 0x0120, 24, 24, 0, 1 }, 1662 .dcp_det = { 0x0120, 23, 23, 0, 1 }, 1663 .dp_det = { 0x0120, 25, 25, 0, 1 }, 1664 .idm_sink_en = { 0x0108, 8, 8, 0, 1 }, 1665 .idp_sink_en = { 0x0108, 7, 7, 0, 1 }, 1666 .idp_src_en = { 0x0108, 9, 9, 0, 1 }, 1667 .rdm_pdwn_en = { 0x0108, 10, 10, 0, 1 }, 1668 .vdm_src_en = { 0x0108, 12, 12, 0, 1 }, 1669 .vdp_src_en = { 0x0108, 11, 11, 0, 1 }, 1670 }, 1671 }, 1672 { /* sentinel */ } 1673 }; 1674 1675 static const struct rockchip_usb2phy_cfg rk3366_phy_cfgs[] = { 1676 { 1677 .reg = 0x700, 1678 .num_ports = 2, 1679 .clkout_ctl = { 0x0724, 15, 15, 1, 0 }, 1680 .port_cfgs = { 1681 [USB2PHY_PORT_HOST] = { 1682 .phy_sus = { 0x0728, 15, 0, 0, 0x1d1 }, 1683 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1684 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1685 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 }, 1686 .utmi_ls = { 0x049c, 14, 13, 0, 1 }, 1687 .utmi_hstdet = { 0x049c, 12, 12, 0, 1 } 1688 } 1689 }, 1690 }, 1691 { /* sentinel */ } 1692 }; 1693 1694 static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = { 1695 { 1696 .reg = 0xe450, 1697 .num_ports = 2, 1698 .clkout_ctl = { 0xe450, 4, 4, 1, 0 }, 1699 .port_cfgs = { 1700 [USB2PHY_PORT_OTG] = { 1701 .phy_sus = { 0xe454, 1, 0, 2, 1 }, 1702 .bvalid_det_en = { 0xe3c0, 3, 3, 0, 1 }, 1703 .bvalid_det_st = { 0xe3e0, 3, 3, 0, 1 }, 1704 .bvalid_det_clr = { 0xe3d0, 3, 3, 0, 1 }, 1705 .id_det_en = { 0xe3c0, 5, 4, 0, 3 }, 1706 .id_det_st = { 0xe3e0, 5, 4, 0, 3 }, 1707 .id_det_clr = { 0xe3d0, 5, 4, 0, 3 }, 1708 .utmi_avalid = { 0xe2ac, 7, 7, 0, 1 }, 1709 .utmi_bvalid = { 0xe2ac, 12, 12, 0, 1 }, 1710 .utmi_id = { 0xe2ac, 8, 8, 0, 1 }, 1711 }, 1712 [USB2PHY_PORT_HOST] = { 1713 .phy_sus = { 0xe458, 1, 0, 0x2, 0x1 }, 1714 .ls_det_en = { 0xe3c0, 6, 6, 0, 1 }, 1715 .ls_det_st = { 0xe3e0, 6, 6, 0, 1 }, 1716 .ls_det_clr = { 0xe3d0, 6, 6, 0, 1 }, 1717 .utmi_ls = { 0xe2ac, 22, 21, 0, 1 }, 1718 .utmi_hstdet = { 0xe2ac, 23, 23, 0, 1 } 1719 } 1720 }, 1721 .chg_det = { 1722 .opmode = { 0xe454, 3, 0, 5, 1 }, 1723 .cp_det = { 0xe2ac, 2, 2, 0, 1 }, 1724 .dcp_det = { 0xe2ac, 1, 1, 0, 1 }, 1725 .dp_det = { 0xe2ac, 0, 0, 0, 1 }, 1726 .idm_sink_en = { 0xe450, 8, 8, 0, 1 }, 1727 .idp_sink_en = { 0xe450, 7, 7, 0, 1 }, 1728 .idp_src_en = { 0xe450, 9, 9, 0, 1 }, 1729 .rdm_pdwn_en = { 0xe450, 10, 10, 0, 1 }, 1730 .vdm_src_en = { 0xe450, 12, 12, 0, 1 }, 1731 .vdp_src_en = { 0xe450, 11, 11, 0, 1 }, 1732 }, 1733 }, 1734 { 1735 .reg = 0xe460, 1736 .num_ports = 2, 1737 .clkout_ctl = { 0xe460, 4, 4, 1, 0 }, 1738 .port_cfgs = { 1739 [USB2PHY_PORT_OTG] = { 1740 .phy_sus = { 0xe464, 1, 0, 2, 1 }, 1741 .bvalid_det_en = { 0xe3c0, 8, 8, 0, 1 }, 1742 .bvalid_det_st = { 0xe3e0, 8, 8, 0, 1 }, 1743 .bvalid_det_clr = { 0xe3d0, 8, 8, 0, 1 }, 1744 .id_det_en = { 0xe3c0, 10, 9, 0, 3 }, 1745 .id_det_st = { 0xe3e0, 10, 9, 0, 3 }, 1746 .id_det_clr = { 0xe3d0, 10, 9, 0, 3 }, 1747 .utmi_avalid = { 0xe2ac, 10, 10, 0, 1 }, 1748 .utmi_bvalid = { 0xe2ac, 16, 16, 0, 1 }, 1749 .utmi_id = { 0xe2ac, 11, 11, 0, 1 }, 1750 }, 1751 [USB2PHY_PORT_HOST] = { 1752 .phy_sus = { 0xe468, 1, 0, 0x2, 0x1 }, 1753 .ls_det_en = { 0xe3c0, 11, 11, 0, 1 }, 1754 .ls_det_st = { 0xe3e0, 11, 11, 0, 1 }, 1755 .ls_det_clr = { 0xe3d0, 11, 11, 0, 1 }, 1756 .utmi_ls = { 0xe2ac, 26, 25, 0, 1 }, 1757 .utmi_hstdet = { 0xe2ac, 27, 27, 0, 1 } 1758 } 1759 }, 1760 }, 1761 { /* sentinel */ } 1762 }; 1763 1764 static const struct rockchip_usb2phy_cfg rk3568_phy_cfgs[] = { 1765 { 1766 .reg = 0xfe8a0000, 1767 .num_ports = 2, 1768 .clkout_ctl = { 0x0008, 4, 4, 1, 0 }, 1769 .port_cfgs = { 1770 [USB2PHY_PORT_OTG] = { 1771 .phy_sus = { 0x0000, 8, 0, 0, 0x1d1 }, 1772 .bvalid_det_en = { 0x0080, 3, 2, 0, 3 }, 1773 .bvalid_det_st = { 0x0084, 3, 2, 0, 3 }, 1774 .bvalid_det_clr = { 0x0088, 3, 2, 0, 3 }, 1775 .id_det_en = { 0x0080, 5, 4, 0, 3 }, 1776 .id_det_st = { 0x0084, 5, 4, 0, 3 }, 1777 .id_det_clr = { 0x0088, 5, 4, 0, 3 }, 1778 .utmi_avalid = { 0x00c0, 10, 10, 0, 1 }, 1779 .utmi_bvalid = { 0x00c0, 9, 9, 0, 1 }, 1780 .utmi_id = { 0x00c0, 6, 6, 0, 1 }, 1781 }, 1782 [USB2PHY_PORT_HOST] = { 1783 /* Select suspend control from controller */ 1784 .phy_sus = { 0x0004, 8, 0, 0x1d2, 0x1d2 }, 1785 .ls_det_en = { 0x0080, 1, 1, 0, 1 }, 1786 .ls_det_st = { 0x0084, 1, 1, 0, 1 }, 1787 .ls_det_clr = { 0x0088, 1, 1, 0, 1 }, 1788 .utmi_ls = { 0x00c0, 17, 16, 0, 1 }, 1789 .utmi_hstdet = { 0x00c0, 19, 19, 0, 1 } 1790 } 1791 }, 1792 .chg_det = { 1793 .opmode = { 0x0000, 3, 0, 5, 1 }, 1794 .cp_det = { 0x00c0, 24, 24, 0, 1 }, 1795 .dcp_det = { 0x00c0, 23, 23, 0, 1 }, 1796 .dp_det = { 0x00c0, 25, 25, 0, 1 }, 1797 .idm_sink_en = { 0x0008, 8, 8, 0, 1 }, 1798 .idp_sink_en = { 0x0008, 7, 7, 0, 1 }, 1799 .idp_src_en = { 0x0008, 9, 9, 0, 1 }, 1800 .rdm_pdwn_en = { 0x0008, 10, 10, 0, 1 }, 1801 .vdm_src_en = { 0x0008, 12, 12, 0, 1 }, 1802 .vdp_src_en = { 0x0008, 11, 11, 0, 1 }, 1803 }, 1804 }, 1805 { 1806 .reg = 0xfe8b0000, 1807 .num_ports = 2, 1808 .clkout_ctl = { 0x0008, 4, 4, 1, 0 }, 1809 .port_cfgs = { 1810 [USB2PHY_PORT_OTG] = { 1811 .phy_sus = { 0x0000, 8, 0, 0x1d2, 0x1d1 }, 1812 .ls_det_en = { 0x0080, 0, 0, 0, 1 }, 1813 .ls_det_st = { 0x0084, 0, 0, 0, 1 }, 1814 .ls_det_clr = { 0x0088, 0, 0, 0, 1 }, 1815 .utmi_ls = { 0x00c0, 5, 4, 0, 1 }, 1816 .utmi_hstdet = { 0x00c0, 7, 7, 0, 1 } 1817 }, 1818 [USB2PHY_PORT_HOST] = { 1819 .phy_sus = { 0x0004, 8, 0, 0x1d2, 0x1d1 }, 1820 .ls_det_en = { 0x0080, 1, 1, 0, 1 }, 1821 .ls_det_st = { 0x0084, 1, 1, 0, 1 }, 1822 .ls_det_clr = { 0x0088, 1, 1, 0, 1 }, 1823 .utmi_ls = { 0x00c0, 17, 16, 0, 1 }, 1824 .utmi_hstdet = { 0x00c0, 19, 19, 0, 1 } 1825 } 1826 }, 1827 }, 1828 { /* sentinel */ } 1829 }; 1830 1831 static const struct rockchip_usb2phy_cfg rk3588_phy_cfgs[] = { 1832 { 1833 .reg = 0x0000, 1834 .num_ports = 1, 1835 .phy_tuning = rk3588_usb2phy_tuning, 1836 .clkout_ctl = { 0x0000, 0, 0, 1, 0 }, 1837 .port_cfgs = { 1838 [USB2PHY_PORT_OTG] = { 1839 .phy_sus = { 0x000c, 11, 11, 0, 1 }, 1840 .bvalid_det_en = { 0x0080, 1, 1, 0, 1 }, 1841 .bvalid_det_st = { 0x0084, 1, 1, 0, 1 }, 1842 .bvalid_det_clr = { 0x0088, 1, 1, 0, 1 }, 1843 .ls_det_en = { 0x0080, 0, 0, 0, 1 }, 1844 .ls_det_st = { 0x0084, 0, 0, 0, 1 }, 1845 .ls_det_clr = { 0x0088, 0, 0, 0, 1 }, 1846 .disfall_en = { 0x0080, 6, 6, 0, 1 }, 1847 .disfall_st = { 0x0084, 6, 6, 0, 1 }, 1848 .disfall_clr = { 0x0088, 6, 6, 0, 1 }, 1849 .disrise_en = { 0x0080, 5, 5, 0, 1 }, 1850 .disrise_st = { 0x0084, 5, 5, 0, 1 }, 1851 .disrise_clr = { 0x0088, 5, 5, 0, 1 }, 1852 .utmi_avalid = { 0x00c0, 7, 7, 0, 1 }, 1853 .utmi_bvalid = { 0x00c0, 6, 6, 0, 1 }, 1854 .utmi_ls = { 0x00c0, 10, 9, 0, 1 }, 1855 } 1856 }, 1857 .chg_det = { 1858 .cp_det = { 0x00c0, 0, 0, 0, 1 }, 1859 .dcp_det = { 0x00c0, 0, 0, 0, 1 }, 1860 .dp_det = { 0x00c0, 1, 1, 1, 0 }, 1861 .idm_sink_en = { 0x0008, 5, 5, 1, 0 }, 1862 .idp_sink_en = { 0x0008, 5, 5, 0, 1 }, 1863 .idp_src_en = { 0x0008, 14, 14, 0, 1 }, 1864 .rdm_pdwn_en = { 0x0008, 14, 14, 0, 1 }, 1865 .vdm_src_en = { 0x0008, 7, 6, 0, 3 }, 1866 .vdp_src_en = { 0x0008, 7, 6, 0, 3 }, 1867 }, 1868 }, 1869 { 1870 .reg = 0x4000, 1871 .num_ports = 1, 1872 .phy_tuning = rk3588_usb2phy_tuning, 1873 .clkout_ctl = { 0x0000, 0, 0, 1, 0 }, 1874 .port_cfgs = { 1875 [USB2PHY_PORT_OTG] = { 1876 .phy_sus = { 0x000c, 11, 11, 0, 1 }, 1877 .bvalid_det_en = { 0x0080, 1, 1, 0, 1 }, 1878 .bvalid_det_st = { 0x0084, 1, 1, 0, 1 }, 1879 .bvalid_det_clr = { 0x0088, 1, 1, 0, 1 }, 1880 .ls_det_en = { 0x0080, 0, 0, 0, 1 }, 1881 .ls_det_st = { 0x0084, 0, 0, 0, 1 }, 1882 .ls_det_clr = { 0x0088, 0, 0, 0, 1 }, 1883 .disfall_en = { 0x0080, 6, 6, 0, 1 }, 1884 .disfall_st = { 0x0084, 6, 6, 0, 1 }, 1885 .disfall_clr = { 0x0088, 6, 6, 0, 1 }, 1886 .disrise_en = { 0x0080, 5, 5, 0, 1 }, 1887 .disrise_st = { 0x0084, 5, 5, 0, 1 }, 1888 .disrise_clr = { 0x0088, 5, 5, 0, 1 }, 1889 .utmi_avalid = { 0x00c0, 7, 7, 0, 1 }, 1890 .utmi_bvalid = { 0x00c0, 6, 6, 0, 1 }, 1891 .utmi_ls = { 0x00c0, 10, 9, 0, 1 }, 1892 } 1893 }, 1894 .chg_det = { 1895 .cp_det = { 0x00c0, 0, 0, 0, 1 }, 1896 .dcp_det = { 0x00c0, 0, 0, 0, 1 }, 1897 .dp_det = { 0x00c0, 1, 1, 1, 0 }, 1898 .idm_sink_en = { 0x0008, 5, 5, 1, 0 }, 1899 .idp_sink_en = { 0x0008, 5, 5, 0, 1 }, 1900 .idp_src_en = { 0x0008, 14, 14, 0, 1 }, 1901 .rdm_pdwn_en = { 0x0008, 14, 14, 0, 1 }, 1902 .vdm_src_en = { 0x0008, 7, 6, 0, 3 }, 1903 .vdp_src_en = { 0x0008, 7, 6, 0, 3 }, 1904 }, 1905 }, 1906 { 1907 .reg = 0x8000, 1908 .num_ports = 1, 1909 .phy_tuning = rk3588_usb2phy_tuning, 1910 .clkout_ctl = { 0x0000, 0, 0, 1, 0 }, 1911 .port_cfgs = { 1912 [USB2PHY_PORT_HOST] = { 1913 .phy_sus = { 0x0008, 2, 2, 0, 1 }, 1914 .ls_det_en = { 0x0080, 0, 0, 0, 1 }, 1915 .ls_det_st = { 0x0084, 0, 0, 0, 1 }, 1916 .ls_det_clr = { 0x0088, 0, 0, 0, 1 }, 1917 .disfall_en = { 0x0080, 6, 6, 0, 1 }, 1918 .disfall_st = { 0x0084, 6, 6, 0, 1 }, 1919 .disfall_clr = { 0x0088, 6, 6, 0, 1 }, 1920 .disrise_en = { 0x0080, 5, 5, 0, 1 }, 1921 .disrise_st = { 0x0084, 5, 5, 0, 1 }, 1922 .disrise_clr = { 0x0088, 5, 5, 0, 1 }, 1923 .utmi_ls = { 0x00c0, 10, 9, 0, 1 }, 1924 } 1925 }, 1926 }, 1927 { 1928 .reg = 0xc000, 1929 .num_ports = 1, 1930 .phy_tuning = rk3588_usb2phy_tuning, 1931 .clkout_ctl = { 0x0000, 0, 0, 1, 0 }, 1932 .port_cfgs = { 1933 [USB2PHY_PORT_HOST] = { 1934 .phy_sus = { 0x0008, 2, 2, 0, 1 }, 1935 .ls_det_en = { 0x0080, 0, 0, 0, 1 }, 1936 .ls_det_st = { 0x0084, 0, 0, 0, 1 }, 1937 .ls_det_clr = { 0x0088, 0, 0, 0, 1 }, 1938 .disfall_en = { 0x0080, 6, 6, 0, 1 }, 1939 .disfall_st = { 0x0084, 6, 6, 0, 1 }, 1940 .disfall_clr = { 0x0088, 6, 6, 0, 1 }, 1941 .disrise_en = { 0x0080, 5, 5, 0, 1 }, 1942 .disrise_st = { 0x0084, 5, 5, 0, 1 }, 1943 .disrise_clr = { 0x0088, 5, 5, 0, 1 }, 1944 .utmi_ls = { 0x00c0, 10, 9, 0, 1 }, 1945 } 1946 }, 1947 }, 1948 { /* sentinel */ } 1949 }; 1950 1951 static const struct rockchip_usb2phy_cfg rv1108_phy_cfgs[] = { 1952 { 1953 .reg = 0x100, 1954 .num_ports = 2, 1955 .clkout_ctl = { 0x108, 4, 4, 1, 0 }, 1956 .port_cfgs = { 1957 [USB2PHY_PORT_OTG] = { 1958 .phy_sus = { 0x0100, 15, 0, 0, 0x1d1 }, 1959 .bvalid_det_en = { 0x0680, 3, 3, 0, 1 }, 1960 .bvalid_det_st = { 0x0690, 3, 3, 0, 1 }, 1961 .bvalid_det_clr = { 0x06a0, 3, 3, 0, 1 }, 1962 .ls_det_en = { 0x0680, 2, 2, 0, 1 }, 1963 .ls_det_st = { 0x0690, 2, 2, 0, 1 }, 1964 .ls_det_clr = { 0x06a0, 2, 2, 0, 1 }, 1965 .utmi_bvalid = { 0x0804, 10, 10, 0, 1 }, 1966 .utmi_ls = { 0x0804, 13, 12, 0, 1 }, 1967 }, 1968 [USB2PHY_PORT_HOST] = { 1969 .phy_sus = { 0x0104, 15, 0, 0, 0x1d1 }, 1970 .ls_det_en = { 0x0680, 4, 4, 0, 1 }, 1971 .ls_det_st = { 0x0690, 4, 4, 0, 1 }, 1972 .ls_det_clr = { 0x06a0, 4, 4, 0, 1 }, 1973 .utmi_ls = { 0x0804, 9, 8, 0, 1 }, 1974 .utmi_hstdet = { 0x0804, 7, 7, 0, 1 } 1975 } 1976 }, 1977 .chg_det = { 1978 .opmode = { 0x0100, 3, 0, 5, 1 }, 1979 .cp_det = { 0x0804, 1, 1, 0, 1 }, 1980 .dcp_det = { 0x0804, 0, 0, 0, 1 }, 1981 .dp_det = { 0x0804, 2, 2, 0, 1 }, 1982 .idm_sink_en = { 0x0108, 8, 8, 0, 1 }, 1983 .idp_sink_en = { 0x0108, 7, 7, 0, 1 }, 1984 .idp_src_en = { 0x0108, 9, 9, 0, 1 }, 1985 .rdm_pdwn_en = { 0x0108, 10, 10, 0, 1 }, 1986 .vdm_src_en = { 0x0108, 12, 12, 0, 1 }, 1987 .vdp_src_en = { 0x0108, 11, 11, 0, 1 }, 1988 }, 1989 }, 1990 { /* sentinel */ } 1991 }; 1992 1993 static const struct of_device_id rockchip_usb2phy_dt_match[] = { 1994 { .compatible = "rockchip,px30-usb2phy", .data = &rk3328_phy_cfgs }, 1995 { .compatible = "rockchip,rk3228-usb2phy", .data = &rk3228_phy_cfgs }, 1996 { .compatible = "rockchip,rk3308-usb2phy", .data = &rk3308_phy_cfgs }, 1997 { .compatible = "rockchip,rk3328-usb2phy", .data = &rk3328_phy_cfgs }, 1998 { .compatible = "rockchip,rk3366-usb2phy", .data = &rk3366_phy_cfgs }, 1999 { .compatible = "rockchip,rk3399-usb2phy", .data = &rk3399_phy_cfgs }, 2000 { .compatible = "rockchip,rk3568-usb2phy", .data = &rk3568_phy_cfgs }, 2001 { .compatible = "rockchip,rk3588-usb2phy", .data = &rk3588_phy_cfgs }, 2002 { .compatible = "rockchip,rv1108-usb2phy", .data = &rv1108_phy_cfgs }, 2003 {} 2004 }; 2005 MODULE_DEVICE_TABLE(of, rockchip_usb2phy_dt_match); 2006 2007 static struct platform_driver rockchip_usb2phy_driver = { 2008 .probe = rockchip_usb2phy_probe, 2009 .driver = { 2010 .name = "rockchip-usb2phy", 2011 .of_match_table = rockchip_usb2phy_dt_match, 2012 }, 2013 }; 2014 module_platform_driver(rockchip_usb2phy_driver); 2015 2016 MODULE_AUTHOR("Frank Wang <frank.wang@rock-chips.com>"); 2017 MODULE_DESCRIPTION("Rockchip USB2.0 PHY driver"); 2018 MODULE_LICENSE("GPL v2"); 2019