drivers/usb/typec/typec_wcove.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /**
   3  * typec_wcove.c - WhiskeyCove PMIC USB Type-C PHY driver
   4  *
   5  * Copyright (C) 2017 Intel Corporation
   6  * Author: Heikki Krogerus <[email protected]>
   7  */
   8
   9 #include <linux/acpi.h>
  10 #include <linux/module.h>
  11 #include <linux/usb/tcpm.h>
  12 #include <linux/interrupt.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/mfd/intel_soc_pmic.h>
  15
  16 /* Register offsets */
  17 #define WCOVE_CHGRIRQ0          0x4e09
  18
  19 #define USBC_CONTROL1           0x7001
  20 #define USBC_CONTROL2           0x7002
  21 #define USBC_CONTROL3           0x7003
  22 #define USBC_CC1_CTRL           0x7004
  23 #define USBC_CC2_CTRL           0x7005
  24 #define USBC_STATUS1            0x7007
  25 #define USBC_STATUS2            0x7008
  26 #define USBC_STATUS3            0x7009
  27 #define USBC_CC1                0x700a
  28 #define USBC_CC2                0x700b
  29 #define USBC_CC1_STATUS         0x700c
  30 #define USBC_CC2_STATUS         0x700d
  31 #define USBC_IRQ1               0x7015
  32 #define USBC_IRQ2               0x7016
  33 #define USBC_IRQMASK1           0x7017
  34 #define USBC_IRQMASK2           0x7018
  35 #define USBC_PDCFG2             0x701a
  36 #define USBC_PDCFG3             0x701b
  37 #define USBC_PDSTATUS           0x701c
  38 #define USBC_RXSTATUS           0x701d
  39 #define USBC_RXINFO             0x701e
  40 #define USBC_TXCMD              0x701f
  41 #define USBC_TXINFO             0x7020
  42 #define USBC_RX_DATA            0x7028
  43 #define USBC_TX_DATA            0x7047
  44
  45 /* Register bits */
  46
  47 #define USBC_CONTROL1_MODE_MASK         0x3
  48 #define   USBC_CONTROL1_MODE_SNK        0
  49 #define   USBC_CONTROL1_MODE_SNKACC     1
  50 #define   USBC_CONTROL1_MODE_SRC        2
  51 #define   USBC_CONTROL1_MODE_SRCACC     3
  52 #define   USBC_CONTROL1_MODE_DRP        4
  53 #define   USBC_CONTROL1_MODE_DRPACC     5
  54 #define   USBC_CONTROL1_MODE_TEST       7
  55 #define USBC_CONTROL1_CURSRC_MASK       0xc
  56 #define   USBC_CONTROL1_CURSRC_UA_0     (0 << 3)
  57 #define   USBC_CONTROL1_CURSRC_UA_80    (1 << 3)
  58 #define   USBC_CONTROL1_CURSRC_UA_180   (2 << 3)
  59 #define   USBC_CONTROL1_CURSRC_UA_330   (3 << 3)
  60 #define USBC_CONTROL1_DRPTOGGLE_RANDOM  0xe0
  61
  62 #define USBC_CONTROL2_UNATT_SNK         BIT(0)
  63 #define USBC_CONTROL2_UNATT_SRC         BIT(1)
  64 #define USBC_CONTROL2_DIS_ST            BIT(2)
  65
  66 #define USBC_CONTROL3_DET_DIS           BIT(0)
  67 #define USBC_CONTROL3_PD_DIS            BIT(1)
  68 #define USBC_CONTROL3_RESETPHY          BIT(2)
  69
  70 #define USBC_CC_CTRL_PU_EN              BIT(0)
  71 #define USBC_CC_CTRL_VCONN_EN           BIT(1)
  72 #define USBC_CC_CTRL_TX_EN              BIT(2)
  73 #define USBC_CC_CTRL_PD_EN              BIT(3)
  74 #define USBC_CC_CTRL_CDET_EN            BIT(4)
  75 #define USBC_CC_CTRL_RDET_EN            BIT(5)
  76 #define USBC_CC_CTRL_ADC_EN             BIT(6)
  77 #define USBC_CC_CTRL_VBUSOK             BIT(7)
  78
  79 #define USBC_STATUS1_DET_ONGOING        BIT(6)
  80 #define USBC_STATUS1_RSLT(r)            ((r) & 0xf)
  81 #define USBC_RSLT_NOTHING               0
  82 #define USBC_RSLT_SRC_DEFAULT           1
  83 #define USBC_RSLT_SRC_1_5A              2
  84 #define USBC_RSLT_SRC_3_0A              3
  85 #define USBC_RSLT_SNK                   4
  86 #define USBC_RSLT_DEBUG_ACC             5
  87 #define USBC_RSLT_AUDIO_ACC             6
  88 #define USBC_RSLT_UNDEF                 15
  89 #define USBC_STATUS1_ORIENT(r)          (((r) >> 4) & 0x3)
  90 #define USBC_ORIENT_NORMAL              1
  91 #define USBC_ORIENT_REVERSE             2
  92
  93 #define USBC_STATUS2_VBUS_REQ           BIT(5)
  94
  95 #define UCSC_CC_STATUS_SNK_RP           BIT(0)
  96 #define UCSC_CC_STATUS_PWRDEFSNK        BIT(1)
  97 #define UCSC_CC_STATUS_PWR_1P5A_SNK     BIT(2)
  98 #define UCSC_CC_STATUS_PWR_3A_SNK       BIT(3)
  99 #define UCSC_CC_STATUS_SRC_RP           BIT(4)
 100 #define UCSC_CC_STATUS_RX(r)            (((r) >> 5) & 0x3)
 101 #define   USBC_CC_STATUS_RD             1
 102 #define   USBC_CC_STATUS_RA             2
 103
 104 #define USBC_IRQ1_ADCDONE1              BIT(2)
 105 #define USBC_IRQ1_OVERTEMP              BIT(1)
 106 #define USBC_IRQ1_SHORT                 BIT(0)
 107
 108 #define USBC_IRQ2_CC_CHANGE             BIT(7)
 109 #define USBC_IRQ2_RX_PD                 BIT(6)
 110 #define USBC_IRQ2_RX_HR                 BIT(5)
 111 #define USBC_IRQ2_RX_CR                 BIT(4)
 112 #define USBC_IRQ2_TX_SUCCESS            BIT(3)
 113 #define USBC_IRQ2_TX_FAIL               BIT(2)
 114
 115 #define USBC_IRQMASK1_ALL       (USBC_IRQ1_ADCDONE1 | USBC_IRQ1_OVERTEMP | \
 116                                  USBC_IRQ1_SHORT)
 117
 118 #define USBC_IRQMASK2_ALL       (USBC_IRQ2_CC_CHANGE | USBC_IRQ2_RX_PD | \
 119                                  USBC_IRQ2_RX_HR | USBC_IRQ2_RX_CR | \
 120                                  USBC_IRQ2_TX_SUCCESS | USBC_IRQ2_TX_FAIL)
 121
 122 #define USBC_PDCFG2_SOP                 BIT(0)
 123 #define USBC_PDCFG2_SOP_P               BIT(1)
 124 #define USBC_PDCFG2_SOP_PP              BIT(2)
 125 #define USBC_PDCFG2_SOP_P_DEBUG         BIT(3)
 126 #define USBC_PDCFG2_SOP_PP_DEBUG        BIT(4)
 127
 128 #define USBC_PDCFG3_DATAROLE_SHIFT      1
 129 #define USBC_PDCFG3_SOP_SHIFT           2
 130
 131 #define USBC_RXSTATUS_RXCLEAR           BIT(0)
 132 #define USBC_RXSTATUS_RXDATA            BIT(7)
 133
 134 #define USBC_RXINFO_RXBYTES(i)          (((i) >> 3) & 0x1f)
 135
 136 #define USBC_TXCMD_BUF_RDY              BIT(0)
 137 #define USBC_TXCMD_START                BIT(1)
 138 #define USBC_TXCMD_NOP                  (0 << 5)
 139 #define USBC_TXCMD_MSG                  (1 << 5)
 140 #define USBC_TXCMD_CR                   (2 << 5)
 141 #define USBC_TXCMD_HR                   (3 << 5)
 142 #define USBC_TXCMD_BIST                 (4 << 5)
 143
 144 #define USBC_TXINFO_RETRIES(d)          (d << 3)
 145
 146 struct wcove_typec {
 147         struct mutex lock; /* device lock */
 148         struct device *dev;
 149         struct regmap *regmap;
 150         guid_t guid;
 151
 152         bool vbus;
 153
 154         struct tcpc_dev tcpc;
 155         struct tcpm_port *tcpm;
 156 };
 157
 158 #define tcpc_to_wcove(_tcpc_) container_of(_tcpc_, struct wcove_typec, tcpc)
 159
 160 enum wcove_typec_func {
 161         WCOVE_FUNC_DRIVE_VBUS = 1,
 162         WCOVE_FUNC_ORIENTATION,
 163         WCOVE_FUNC_ROLE,
 164         WCOVE_FUNC_DRIVE_VCONN,
 165 };
 166
 167 enum wcove_typec_orientation {
 168         WCOVE_ORIENTATION_NORMAL,
 169         WCOVE_ORIENTATION_REVERSE,
 170 };
 171
 172 enum wcove_typec_role {
 173         WCOVE_ROLE_HOST,
 174         WCOVE_ROLE_DEVICE,
 175 };
 176
 177 #define WCOVE_DSM_UUID          "482383f0-2876-4e49-8685-db66211af037"
 178
 179 static int wcove_typec_func(struct wcove_typec *wcove,
 180                             enum wcove_typec_func func, int param)
 181 {
 182         union acpi_object *obj;
 183         union acpi_object tmp;
 184         union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp);
 185
 186         tmp.type = ACPI_TYPE_INTEGER;
 187         tmp.integer.value = param;
 188
 189         obj = acpi_evaluate_dsm(ACPI_HANDLE(wcove->dev), &wcove->guid, 1, func,
 190                                 &argv4);
 191         if (!obj) {
 192                 dev_err(wcove->dev, "%s: failed to evaluate _DSM\n", __func__);
 193                 return -EIO;
 194         }
 195
 196         ACPI_FREE(obj);
 197         return 0;
 198 }
 199
 200 static int wcove_init(struct tcpc_dev *tcpc)
 201 {
 202         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 203         int ret;
 204
 205         /* Unmask everything */
 206         ret = regmap_write(wcove->regmap, USBC_IRQMASK1, 0);
 207         if (ret)
 208                 return ret;
 209
 210         return regmap_write(wcove->regmap, USBC_IRQMASK2, 0);
 211 }
 212
 213 static int wcove_get_vbus(struct tcpc_dev *tcpc)
 214 {
 215         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 216         unsigned int cc1ctrl;
 217         int ret;
 218
 219         ret = regmap_read(wcove->regmap, USBC_CC1_CTRL, &cc1ctrl);
 220         if (ret)
 221                 return ret;
 222
 223         wcove->vbus = !!(cc1ctrl & USBC_CC_CTRL_VBUSOK);
 224
 225         return wcove->vbus;
 226 }
 227
 228 static int wcove_set_vbus(struct tcpc_dev *tcpc, bool on, bool sink)
 229 {
 230         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 231
 232         return wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VBUS, on);
 233 }
 234
 235 static int wcove_set_vconn(struct tcpc_dev *tcpc, bool on)
 236 {
 237         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 238
 239         return wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, on);
 240 }
 241
 242 static enum typec_cc_status wcove_to_typec_cc(unsigned int cc)
 243 {
 244         if (cc & UCSC_CC_STATUS_SNK_RP) {
 245                 if (cc & UCSC_CC_STATUS_PWRDEFSNK)
 246                         return TYPEC_CC_RP_DEF;
 247                 else if (cc & UCSC_CC_STATUS_PWR_1P5A_SNK)
 248                         return TYPEC_CC_RP_1_5;
 249                 else if (cc & UCSC_CC_STATUS_PWR_3A_SNK)
 250                         return TYPEC_CC_RP_3_0;
 251         } else {
 252                 switch (UCSC_CC_STATUS_RX(cc)) {
 253                 case USBC_CC_STATUS_RD:
 254                         return TYPEC_CC_RD;
 255                 case USBC_CC_STATUS_RA:
 256                         return TYPEC_CC_RA;
 257                 default:
 258                         break;
 259                 }
 260         }
 261         return TYPEC_CC_OPEN;
 262 }
 263
 264 static int wcove_get_cc(struct tcpc_dev *tcpc, enum typec_cc_status *cc1,
 265                         enum typec_cc_status *cc2)
 266 {
 267         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 268         unsigned int cc1_status;
 269         unsigned int cc2_status;
 270         int ret;
 271
 272         ret = regmap_read(wcove->regmap, USBC_CC1_STATUS, &cc1_status);
 273         if (ret)
 274                 return ret;
 275
 276         ret = regmap_read(wcove->regmap, USBC_CC2_STATUS, &cc2_status);
 277         if (ret)
 278                 return ret;
 279
 280         *cc1 = wcove_to_typec_cc(cc1_status);
 281         *cc2 = wcove_to_typec_cc(cc2_status);
 282
 283         return 0;
 284 }
 285
 286 static int wcove_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc)
 287 {
 288         /* XXX: Relying on the HW FSM to configure things correctly for now */
 289         return 0;
 290 }
 291
 292 static int wcove_set_polarity(struct tcpc_dev *tcpc, enum typec_cc_polarity pol)
 293 {
 294         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 295
 296         return wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION, pol);
 297 }
 298
 299 static int wcove_set_current_limit(struct tcpc_dev *tcpc, u32 max_ma, u32 mv)
 300 {
 301         return 0;
 302 }
 303
 304 static int wcove_set_roles(struct tcpc_dev *tcpc, bool attached,
 305                            enum typec_role role, enum typec_data_role data)
 306 {
 307         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 308         unsigned int val;
 309         int ret;
 310
 311         ret = wcove_typec_func(wcove, WCOVE_FUNC_ROLE, data == TYPEC_HOST ?
 312                                WCOVE_ROLE_HOST : WCOVE_ROLE_DEVICE);
 313         if (ret)
 314                 return ret;
 315
 316         val = role;
 317         val |= data << USBC_PDCFG3_DATAROLE_SHIFT;
 318         val |= PD_REV20 << USBC_PDCFG3_SOP_SHIFT;
 319
 320         return regmap_write(wcove->regmap, USBC_PDCFG3, val);
 321 }
 322
 323 static int wcove_set_pd_rx(struct tcpc_dev *tcpc, bool on)
 324 {
 325         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 326
 327         return regmap_write(wcove->regmap, USBC_PDCFG2,
 328                             on ? USBC_PDCFG2_SOP : 0);
 329 }
 330
 331 static int wcove_pd_transmit(struct tcpc_dev *tcpc,
 332                              enum tcpm_transmit_type type,
 333                              const struct pd_message *msg)
 334 {
 335         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 336         unsigned int info = 0;
 337         unsigned int cmd;
 338         int ret;
 339
 340         ret = regmap_read(wcove->regmap, USBC_TXCMD, &cmd);
 341         if (ret)
 342                 return ret;
 343
 344         if (!(cmd & USBC_TXCMD_BUF_RDY)) {
 345                 dev_warn(wcove->dev, "%s: Last transmission still ongoing!",
 346                          __func__);
 347                 return -EBUSY;
 348         }
 349
 350         if (msg) {
 351                 const u8 *data = (void *)msg;
 352                 int i;
 353
 354                 for (i = 0; i < pd_header_cnt(msg->header) * 4 + 2; i++) {
 355                         ret = regmap_write(wcove->regmap, USBC_TX_DATA + i,
 356                                            data[i]);
 357                         if (ret)
 358                                 return ret;
 359                 }
 360         }
 361
 362         switch (type) {
 363         case TCPC_TX_SOP:
 364         case TCPC_TX_SOP_PRIME:
 365         case TCPC_TX_SOP_PRIME_PRIME:
 366         case TCPC_TX_SOP_DEBUG_PRIME:
 367         case TCPC_TX_SOP_DEBUG_PRIME_PRIME:
 368                 info = type + 1;
 369                 cmd = USBC_TXCMD_MSG;
 370                 break;
 371         case TCPC_TX_HARD_RESET:
 372                 cmd = USBC_TXCMD_HR;
 373                 break;
 374         case TCPC_TX_CABLE_RESET:
 375                 cmd = USBC_TXCMD_CR;
 376                 break;
 377         case TCPC_TX_BIST_MODE_2:
 378                 cmd = USBC_TXCMD_BIST;
 379                 break;
 380         default:
 381                 return -EINVAL;
 382         }
 383
 384         /* NOTE Setting maximum number of retries (7) */
 385         ret = regmap_write(wcove->regmap, USBC_TXINFO,
 386                            info | USBC_TXINFO_RETRIES(7));
 387         if (ret)
 388                 return ret;
 389
 390         return regmap_write(wcove->regmap, USBC_TXCMD, cmd | USBC_TXCMD_START);
 391 }
 392
 393 static int wcove_start_drp_toggling(struct tcpc_dev *tcpc,
 394                                     enum typec_cc_status cc)
 395 {
 396         struct wcove_typec *wcove = tcpc_to_wcove(tcpc);
 397         unsigned int usbc_ctrl;
 398
 399         usbc_ctrl = USBC_CONTROL1_MODE_DRP | USBC_CONTROL1_DRPTOGGLE_RANDOM;
 400
 401         switch (cc) {
 402         case TYPEC_CC_RP_1_5:
 403                 usbc_ctrl |= USBC_CONTROL1_CURSRC_UA_180;
 404                 break;
 405         case TYPEC_CC_RP_3_0:
 406                 usbc_ctrl |= USBC_CONTROL1_CURSRC_UA_330;
 407                 break;
 408         default:
 409                 usbc_ctrl |= USBC_CONTROL1_CURSRC_UA_80;
 410                 break;
 411         }
 412
 413         return regmap_write(wcove->regmap, USBC_CONTROL1, usbc_ctrl);
 414 }
 415
 416 static int wcove_read_rx_buffer(struct wcove_typec *wcove, void *msg)
 417 {
 418         unsigned int info;
 419         int ret;
 420         int i;
 421
 422         ret = regmap_read(wcove->regmap, USBC_RXINFO, &info);
 423         if (ret)
 424                 return ret;
 425
 426         /* FIXME: Check that USBC_RXINFO_RXBYTES(info) matches the header */
 427
 428         for (i = 0; i < USBC_RXINFO_RXBYTES(info); i++) {
 429                 ret = regmap_read(wcove->regmap, USBC_RX_DATA + i, msg + i);
 430                 if (ret)
 431                         return ret;
 432         }
 433
 434         return regmap_write(wcove->regmap, USBC_RXSTATUS,
 435                             USBC_RXSTATUS_RXCLEAR);
 436 }
 437
 438 static irqreturn_t wcove_typec_irq(int irq, void *data)
 439 {
 440         struct wcove_typec *wcove = data;
 441         unsigned int usbc_irq1 = 0;
 442         unsigned int usbc_irq2 = 0;
 443         unsigned int cc1ctrl;
 444         int ret;
 445
 446         mutex_lock(&wcove->lock);
 447
 448         /* Read.. */
 449         ret = regmap_read(wcove->regmap, USBC_IRQ1, &usbc_irq1);
 450         if (ret)
 451                 goto err;
 452
 453         ret = regmap_read(wcove->regmap, USBC_IRQ2, &usbc_irq2);
 454         if (ret)
 455                 goto err;
 456
 457         ret = regmap_read(wcove->regmap, USBC_CC1_CTRL, &cc1ctrl);
 458         if (ret)
 459                 goto err;
 460
 461         if (!wcove->tcpm)
 462                 goto err;
 463
 464         /* ..check.. */
 465         if (usbc_irq1 & USBC_IRQ1_OVERTEMP) {
 466                 dev_err(wcove->dev, "VCONN Switch Over Temperature!\n");
 467                 wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, false);
 468                 /* REVISIT: Report an error? */
 469         }
 470
 471         if (usbc_irq1 & USBC_IRQ1_SHORT) {
 472                 dev_err(wcove->dev, "VCONN Switch Short Circuit!\n");
 473                 wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, false);
 474                 /* REVISIT: Report an error? */
 475         }
 476
 477         if (wcove->vbus != !!(cc1ctrl & USBC_CC_CTRL_VBUSOK))
 478                 tcpm_vbus_change(wcove->tcpm);
 479
 480         /* REVISIT: See if tcpm code can be made to consider Type-C HW FSMs */
 481         if (usbc_irq2 & USBC_IRQ2_CC_CHANGE)
 482                 tcpm_cc_change(wcove->tcpm);
 483
 484         if (usbc_irq2 & USBC_IRQ2_RX_PD) {
 485                 unsigned int status;
 486
 487                 /*
 488                  * FIXME: Need to check if TX is ongoing and report
 489                  * TX_DIREGARDED if needed?
 490                  */
 491
 492                 ret = regmap_read(wcove->regmap, USBC_RXSTATUS, &status);
 493                 if (ret)
 494                         goto err;
 495
 496                 /* Flush all buffers */
 497                 while (status & USBC_RXSTATUS_RXDATA) {
 498                         struct pd_message msg;
 499
 500                         ret = wcove_read_rx_buffer(wcove, &msg);
 501                         if (ret) {
 502                                 dev_err(wcove->dev, "%s: RX read failed\n",
 503                                         __func__);
 504                                 goto err;
 505                         }
 506
 507                         tcpm_pd_receive(wcove->tcpm, &msg);
 508
 509                         ret = regmap_read(wcove->regmap, USBC_RXSTATUS,
 510                                           &status);
 511                         if (ret)
 512                                 goto err;
 513                 }
 514         }
 515
 516         if (usbc_irq2 & USBC_IRQ2_RX_HR)
 517                 tcpm_pd_hard_reset(wcove->tcpm);
 518
 519         /* REVISIT: if (usbc_irq2 & USBC_IRQ2_RX_CR) */
 520
 521         if (usbc_irq2 & USBC_IRQ2_TX_SUCCESS)
 522                 tcpm_pd_transmit_complete(wcove->tcpm, TCPC_TX_SUCCESS);
 523
 524         if (usbc_irq2 & USBC_IRQ2_TX_FAIL)
 525                 tcpm_pd_transmit_complete(wcove->tcpm, TCPC_TX_FAILED);
 526
 527 err:
 528         /* ..and clear. */
 529         if (usbc_irq1) {
 530                 ret = regmap_write(wcove->regmap, USBC_IRQ1, usbc_irq1);
 531                 if (ret)
 532                         dev_WARN(wcove->dev, "%s failed to clear IRQ1\n",
 533                                  __func__);
 534         }
 535
 536         if (usbc_irq2) {
 537                 ret = regmap_write(wcove->regmap, USBC_IRQ2, usbc_irq2);
 538                 if (ret)
 539                         dev_WARN(wcove->dev, "%s failed to clear IRQ2\n",
 540                                  __func__);
 541         }
 542
 543         /* REVISIT: Clear WhiskeyCove CHGR Type-C interrupt */
 544         regmap_write(wcove->regmap, WCOVE_CHGRIRQ0, BIT(5));
 545
 546         mutex_unlock(&wcove->lock);
 547         return IRQ_HANDLED;
 548 }
 549
 550 /*
 551  * The following power levels should be safe to use with Joule board.
 552  */
 553 static const u32 src_pdo[] = {
 554         PDO_FIXED(5000, 1500, PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |
 555                   PDO_FIXED_USB_COMM),
 556 };
 557
 558 static const u32 snk_pdo[] = {
 559         PDO_FIXED(12000, 3000, PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP |
 560                   PDO_FIXED_USB_COMM),
 561         PDO_BATT(4750, 12000, 15000),
 562         PDO_VAR(4750, 12000, 3000),
 563 };
 564
 565 static struct tcpc_config wcove_typec_config = {
 566         .src_pdo = src_pdo,
 567         .nr_src_pdo = ARRAY_SIZE(src_pdo),
 568         .snk_pdo = snk_pdo,
 569         .nr_snk_pdo = ARRAY_SIZE(snk_pdo),
 570
 571         .max_snk_mv = 12000,
 572         .max_snk_ma = 3000,
 573         .max_snk_mw = 36000,
 574         .operating_snk_mw = 15000,
 575
 576         .type = TYPEC_PORT_DRP,
 577         .default_role = TYPEC_SINK,
 578 };
 579
 580 static int wcove_typec_probe(struct platform_device *pdev)
 581 {
 582         struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
 583         struct wcove_typec *wcove;
 584         int irq;
 585         int ret;
 586
 587         wcove = devm_kzalloc(&pdev->dev, sizeof(*wcove), GFP_KERNEL);
 588         if (!wcove)
 589                 return -ENOMEM;
 590
 591         mutex_init(&wcove->lock);
 592         wcove->dev = &pdev->dev;
 593         wcove->regmap = pmic->regmap;
 594
 595         irq = regmap_irq_get_virq(pmic->irq_chip_data_chgr,
 596                                   platform_get_irq(pdev, 0));
 597         if (irq < 0)
 598                 return irq;
 599
 600         ret = guid_parse(WCOVE_DSM_UUID, &wcove->guid);
 601         if (ret)
 602                 return ret;
 603
 604         if (!acpi_check_dsm(ACPI_HANDLE(&pdev->dev), &wcove->guid, 0, 0x1f)) {
 605                 dev_err(&pdev->dev, "Missing _DSM functions\n");
 606                 return -ENODEV;
 607         }
 608
 609         wcove->tcpc.init = wcove_init;
 610         wcove->tcpc.get_vbus = wcove_get_vbus;
 611         wcove->tcpc.set_vbus = wcove_set_vbus;
 612         wcove->tcpc.set_cc = wcove_set_cc;
 613         wcove->tcpc.get_cc = wcove_get_cc;
 614         wcove->tcpc.set_polarity = wcove_set_polarity;
 615         wcove->tcpc.set_vconn = wcove_set_vconn;
 616         wcove->tcpc.set_current_limit = wcove_set_current_limit;
 617         wcove->tcpc.start_drp_toggling = wcove_start_drp_toggling;
 618
 619         wcove->tcpc.set_pd_rx = wcove_set_pd_rx;
 620         wcove->tcpc.set_roles = wcove_set_roles;
 621         wcove->tcpc.pd_transmit = wcove_pd_transmit;
 622
 623         wcove->tcpc.config = &wcove_typec_config;
 624
 625         wcove->tcpm = tcpm_register_port(wcove->dev, &wcove->tcpc);
 626         if (IS_ERR(wcove->tcpm))
 627                 return PTR_ERR(wcove->tcpm);
 628
 629         ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
 630                                         wcove_typec_irq, IRQF_ONESHOT,
 631                                         "wcove_typec", wcove);
 632         if (ret) {
 633                 tcpm_unregister_port(wcove->tcpm);
 634                 return ret;
 635         }
 636
 637         platform_set_drvdata(pdev, wcove);
 638         return 0;
 639 }
 640
 641 static int wcove_typec_remove(struct platform_device *pdev)
 642 {
 643         struct wcove_typec *wcove = platform_get_drvdata(pdev);
 644         unsigned int val;
 645
 646         /* Mask everything */
 647         regmap_read(wcove->regmap, USBC_IRQMASK1, &val);
 648         regmap_write(wcove->regmap, USBC_IRQMASK1, val | USBC_IRQMASK1_ALL);
 649         regmap_read(wcove->regmap, USBC_IRQMASK2, &val);
 650         regmap_write(wcove->regmap, USBC_IRQMASK2, val | USBC_IRQMASK2_ALL);
 651
 652         tcpm_unregister_port(wcove->tcpm);
 653
 654         return 0;
 655 }
 656
 657 static struct platform_driver wcove_typec_driver = {
 658         .driver = {
 659                 .name           = "bxt_wcove_usbc",
 660         },
 661         .probe                  = wcove_typec_probe,
 662         .remove                 = wcove_typec_remove,
 663 };
 664
 665 module_platform_driver(wcove_typec_driver);
 666
 667 MODULE_AUTHOR("Intel Corporation");
 668 MODULE_LICENSE("GPL v2");
 669 MODULE_DESCRIPTION("WhiskeyCove PMIC USB Type-C PHY driver");
 670 MODULE_ALIAS("platform:bxt_wcove_usbc");