sys/arm64/rockchip/rk805.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __FBSDID("$FreeBSD$");
  30
  31 #include <sys/param.h>
  32 #include <sys/bus.h>
  33 #include <sys/kernel.h>
  34 #include <sys/module.h>
  35 #include <sys/mutex.h>
  36 #include <sys/rman.h>
  37 #include <machine/bus.h>
  38
  39 #include <dev/iicbus/iiconf.h>
  40 #include <dev/iicbus/iicbus.h>
  41
  42 #include <dev/ofw/ofw_bus.h>
  43 #include <dev/ofw/ofw_bus_subr.h>
  44
  45 #include <dev/extres/regulator/regulator.h>
  46
  47 #include <arm64/rockchip/rk805reg.h>
  48
  49 #include "regdev_if.h"
  50
  51 MALLOC_DEFINE(M_RK805_REG, "RK805 regulator", "RK805 power regulator");
  52
  53 /* #define      dprintf(sc, format, arg...)     device_printf(sc->base_dev, "%s: " format, __func__, arg) */
  54 #define dprintf(sc, format, arg...)
  55
  56 enum rk_pmic_type {
  57         RK805 = 1,
  58         RK808,
  59 };
  60
  61 static struct ofw_compat_data compat_data[] = {
  62         {"rockchip,rk805", RK805},
  63         {"rockchip,rk808", RK808},
  64         {NULL,             0}
  65 };
  66
  67 struct rk805_regdef {
  68         intptr_t                id;
  69         char                    *name;
  70         uint8_t                 enable_reg;
  71         uint8_t                 enable_mask;
  72         uint8_t                 voltage_reg;
  73         uint8_t                 voltage_mask;
  74         int                     voltage_min;
  75         int                     voltage_max;
  76         int                     voltage_step;
  77         int                     voltage_nstep;
  78 };
  79
  80 struct rk805_reg_sc {
  81         struct regnode          *regnode;
  82         device_t                base_dev;
  83         struct rk805_regdef     *def;
  84         phandle_t               xref;
  85         struct regnode_std_param *param;
  86 };
  87
  88 struct rk805_softc {
  89         device_t                dev;
  90         struct mtx              mtx;
  91         struct resource *       res[1];
  92         void *                  intrcookie;
  93         struct intr_config_hook intr_hook;
  94         enum rk_pmic_type       type;
  95
  96         struct rk805_reg_sc     **regs;
  97         int                     nregs;
  98 };
  99
 100 static struct rk805_regdef rk805_regdefs[] = {
 101         {
 102                 .id = RK805_DCDC1,
 103                 .name = "DCDC_REG1",
 104                 .enable_reg = RK805_DCDC_EN,
 105                 .enable_mask = 0x11,
 106                 .voltage_reg = RK805_DCDC1_ON_VSEL,
 107                 .voltage_mask = 0x3F,
 108                 .voltage_min = 712500,
 109                 .voltage_max = 1450000,
 110                 .voltage_step = 12500,
 111                 .voltage_nstep = 64,
 112         },
 113         {
 114                 .id = RK805_DCDC2,
 115                 .name = "DCDC_REG2",
 116                 .enable_reg = RK805_DCDC_EN,
 117                 .enable_mask = 0x22,
 118                 .voltage_reg = RK805_DCDC2_ON_VSEL,
 119                 .voltage_mask = 0x3F,
 120                 .voltage_min = 712500,
 121                 .voltage_max = 1450000,
 122                 .voltage_step = 12500,
 123                 .voltage_nstep = 64,
 124         },
 125         {
 126                 .id = RK805_DCDC3,
 127                 .name = "DCDC_REG3",
 128                 .enable_reg = RK805_DCDC_EN,
 129                 .enable_mask = 0x44,
 130         },
 131         {
 132                 .id = RK805_DCDC4,
 133                 .name = "DCDC_REG4",
 134                 .enable_reg = RK805_DCDC_EN,
 135                 .enable_mask = 0x88,
 136                 .voltage_reg = RK805_DCDC4_ON_VSEL,
 137                 .voltage_mask = 0x3F,
 138                 .voltage_min = 800000,
 139                 .voltage_max = 3500000,
 140                 .voltage_step = 100000,
 141                 .voltage_nstep = 28,
 142         },
 143         {
 144                 .id = RK805_LDO1,
 145                 .name = "LDO_REG1",
 146                 .enable_reg = RK805_LDO_EN,
 147                 .enable_mask = 0x11,
 148                 .voltage_reg = RK805_LDO1_ON_VSEL,
 149                 .voltage_mask = 0x1F,
 150                 .voltage_min = 800000,
 151                 .voltage_max = 3400000,
 152                 .voltage_step = 100000,
 153                 .voltage_nstep = 27,
 154         },
 155         {
 156                 .id = RK805_LDO2,
 157                 .name = "LDO_REG2",
 158                 .enable_reg = RK805_LDO_EN,
 159                 .enable_mask = 0x22,
 160                 .voltage_reg = RK805_LDO2_ON_VSEL,
 161                 .voltage_mask = 0x1F,
 162                 .voltage_min = 800000,
 163                 .voltage_max = 3400000,
 164                 .voltage_step = 100000,
 165                 .voltage_nstep = 27,
 166         },
 167         {
 168                 .id = RK805_LDO3,
 169                 .name = "LDO_REG3",
 170                 .enable_reg = RK805_LDO_EN,
 171                 .enable_mask = 0x44,
 172                 .voltage_reg = RK805_LDO3_ON_VSEL,
 173                 .voltage_mask = 0x1F,
 174                 .voltage_min = 800000,
 175                 .voltage_max = 3400000,
 176                 .voltage_step = 100000,
 177                 .voltage_nstep = 27,
 178         },
 179 };
 180
 181 static struct rk805_regdef rk808_regdefs[] = {
 182         {
 183                 .id = RK805_DCDC1,
 184                 .name = "DCDC_REG1",
 185                 .enable_reg = RK805_DCDC_EN,
 186                 .enable_mask = 0x1,
 187                 .voltage_reg = RK805_DCDC1_ON_VSEL,
 188                 .voltage_mask = 0x3F,
 189                 .voltage_min = 712500,
 190                 .voltage_max = 1500000,
 191                 .voltage_step = 12500,
 192                 .voltage_nstep = 64,
 193         },
 194         {
 195                 .id = RK805_DCDC2,
 196                 .name = "DCDC_REG2",
 197                 .enable_reg = RK805_DCDC_EN,
 198                 .enable_mask = 0x2,
 199                 .voltage_reg = RK805_DCDC2_ON_VSEL,
 200                 .voltage_mask = 0x3F,
 201                 .voltage_min = 712500,
 202                 .voltage_max = 1500000,
 203                 .voltage_step = 12500,
 204                 .voltage_nstep = 64,
 205         },
 206         {
 207                 .id = RK805_DCDC3,
 208                 .name = "DCDC_REG3",
 209                 .enable_reg = RK805_DCDC_EN,
 210                 .enable_mask = 0x4,
 211         },
 212         {
 213                 .id = RK805_DCDC4,
 214                 .name = "DCDC_REG4",
 215                 .enable_reg = RK805_DCDC_EN,
 216                 .enable_mask = 0x8,
 217                 .voltage_reg = RK805_DCDC4_ON_VSEL,
 218                 .voltage_mask = 0xF,
 219                 .voltage_min = 1800000,
 220                 .voltage_max = 3300000,
 221                 .voltage_step = 100000,
 222                 .voltage_nstep = 16,
 223         },
 224         {
 225                 .id = RK808_LDO1,
 226                 .name = "LDO_REG1",
 227                 .enable_reg = RK808_LDO_EN,
 228                 .enable_mask = 0x1,
 229                 .voltage_reg = RK805_LDO1_ON_VSEL,
 230                 .voltage_mask = 0x1F,
 231                 .voltage_min = 1800000,
 232                 .voltage_max = 3400000,
 233                 .voltage_step = 100000,
 234                 .voltage_nstep = 17,
 235         },
 236         {
 237                 .id = RK808_LDO2,
 238                 .name = "LDO_REG2",
 239                 .enable_reg = RK808_LDO_EN,
 240                 .enable_mask = 0x2,
 241                 .voltage_reg = RK805_LDO2_ON_VSEL,
 242                 .voltage_mask = 0x1F,
 243                 .voltage_min = 1800000,
 244                 .voltage_max = 3400000,
 245                 .voltage_step = 100000,
 246                 .voltage_nstep = 17,
 247         },
 248         {
 249                 .id = RK808_LDO3,
 250                 .name = "LDO_REG3",
 251                 .enable_reg = RK808_LDO_EN,
 252                 .enable_mask = 0x4,
 253                 .voltage_reg = RK805_LDO3_ON_VSEL,
 254                 .voltage_mask = 0xF,
 255                 .voltage_min = 800000,
 256                 .voltage_max = 2500000,
 257                 .voltage_step = 100000,
 258                 .voltage_nstep = 18,
 259         },
 260         {
 261                 .id = RK808_LDO4,
 262                 .name = "LDO_REG4",
 263                 .enable_reg = RK808_LDO_EN,
 264                 .enable_mask = 0x8,
 265                 .voltage_reg = RK808_LDO4_ON_VSEL,
 266                 .voltage_mask = 0x1F,
 267                 .voltage_min = 1800000,
 268                 .voltage_max = 3400000,
 269                 .voltage_step = 100000,
 270                 .voltage_nstep = 17,
 271         },
 272         {
 273                 .id = RK808_LDO5,
 274                 .name = "LDO_REG5",
 275                 .enable_reg = RK808_LDO_EN,
 276                 .enable_mask = 0x10,
 277                 .voltage_reg = RK808_LDO5_ON_VSEL,
 278                 .voltage_mask = 0x1F,
 279                 .voltage_min = 1800000,
 280                 .voltage_max = 3400000,
 281                 .voltage_step = 100000,
 282                 .voltage_nstep = 17,
 283         },
 284         {
 285                 .id = RK808_LDO6,
 286                 .name = "LDO_REG6",
 287                 .enable_reg = RK808_LDO_EN,
 288                 .enable_mask = 0x20,
 289                 .voltage_reg = RK808_LDO6_ON_VSEL,
 290                 .voltage_mask = 0x1F,
 291                 .voltage_min = 800000,
 292                 .voltage_max = 2500000,
 293                 .voltage_step = 100000,
 294                 .voltage_nstep = 18,
 295         },
 296         {
 297                 .id = RK808_LDO7,
 298                 .name = "LDO_REG7",
 299                 .enable_reg = RK808_LDO_EN,
 300                 .enable_mask = 0x40,
 301                 .voltage_reg = RK808_LDO7_ON_VSEL,
 302                 .voltage_mask = 0x1F,
 303                 .voltage_min = 800000,
 304                 .voltage_max = 2500000,
 305                 .voltage_step = 100000,
 306                 .voltage_nstep = 18,
 307         },
 308         {
 309                 .id = RK808_LDO8,
 310                 .name = "LDO_REG8",
 311                 .enable_reg = RK808_LDO_EN,
 312                 .enable_mask = 0x80,
 313                 .voltage_reg = RK808_LDO8_ON_VSEL,
 314                 .voltage_mask = 0x1F,
 315                 .voltage_min = 1800000,
 316                 .voltage_max = 3400000,
 317                 .voltage_step = 100000,
 318                 .voltage_nstep = 17,
 319         },
 320         {
 321                 .id = RK808_SWITCH1,
 322                 .name = "SWITCH_REG1",
 323                 .enable_reg = RK805_DCDC_EN,
 324                 .enable_mask = 0x20,
 325         },
 326         {
 327                 .id = RK808_SWITCH2,
 328                 .name = "SWITCH_REG2",
 329                 .enable_reg = RK805_DCDC_EN,
 330                 .enable_mask = 0x40,
 331         },
 332 };
 333
 334 static int
 335 rk805_read(device_t dev, uint8_t reg, uint8_t *data, uint8_t size)
 336 {
 337         int err;
 338
 339         err = iicdev_readfrom(dev, reg, data, size, IIC_INTRWAIT);
 340         return (err);
 341 }
 342
 343 static int
 344 rk805_write(device_t dev, uint8_t reg, uint8_t data)
 345 {
 346         return (iicdev_writeto(dev, reg, &data, 1, IIC_INTRWAIT));
 347 }
 348
 349 static int
 350 rk805_regnode_init(struct regnode *regnode)
 351 {
 352         return (0);
 353 }
 354
 355 static int
 356 rk805_regnode_enable(struct regnode *regnode, bool enable, int *udelay)
 357 {
 358         struct rk805_reg_sc *sc;
 359         uint8_t val;
 360
 361         sc = regnode_get_softc(regnode);
 362
 363         dprintf(sc, "%sabling regulator %s\n",
 364             enable ? "En" : "Dis",
 365             sc->def->name);
 366         rk805_read(sc->base_dev, sc->def->enable_reg, &val, 1);
 367         if (enable)
 368                 val |= sc->def->enable_mask;
 369         else
 370                 val &= ~sc->def->enable_mask;
 371         rk805_write(sc->base_dev, sc->def->enable_reg, val);
 372
 373         *udelay = 0;
 374
 375         return (0);
 376 }
 377
 378 static void
 379 rk805_regnode_reg_to_voltage(struct rk805_reg_sc *sc, uint8_t val, int *uv)
 380 {
 381         if (val < sc->def->voltage_nstep)
 382                 *uv = sc->def->voltage_min + val * sc->def->voltage_step;
 383         else
 384                 *uv = sc->def->voltage_min +
 385                        (sc->def->voltage_nstep * sc->def->voltage_step);
 386 }
 387
 388 static int
 389 rk805_regnode_voltage_to_reg(struct rk805_reg_sc *sc, int min_uvolt,
 390     int max_uvolt, uint8_t *val)
 391 {
 392         uint8_t nval;
 393         int nstep, uvolt;
 394
 395         nval = 0;
 396         uvolt = sc->def->voltage_min;
 397
 398         for (nstep = 0; nstep < sc->def->voltage_nstep && uvolt < min_uvolt;
 399              nstep++) {
 400                 ++nval;
 401                 uvolt += sc->def->voltage_step;
 402         }
 403         if (uvolt > max_uvolt)
 404                 return (EINVAL);
 405
 406         *val = nval;
 407         return (0);
 408 }
 409
 410 static int
 411 rk805_regnode_set_voltage(struct regnode *regnode, int min_uvolt,
 412     int max_uvolt, int *udelay)
 413 {
 414         struct rk805_reg_sc *sc;
 415         uint8_t val;
 416         int uvolt;
 417
 418         sc = regnode_get_softc(regnode);
 419
 420         if (!sc->def->voltage_step)
 421                 return (ENXIO);
 422
 423         dprintf(sc, "Setting %s to %d<->%d uvolts\n",
 424             sc->def->name,
 425             min_uvolt,
 426             max_uvolt);
 427         rk805_read(sc->base_dev, sc->def->voltage_reg, &val, 1);
 428         if (rk805_regnode_voltage_to_reg(sc, min_uvolt, max_uvolt, &val) != 0)
 429                 return (ERANGE);
 430
 431         rk805_write(sc->base_dev, sc->def->voltage_reg, val);
 432
 433         rk805_read(sc->base_dev, sc->def->voltage_reg, &val, 1);
 434
 435         *udelay = 0;
 436
 437         rk805_regnode_reg_to_voltage(sc, val, &uvolt);
 438         dprintf(sc, "Regulator %s set to %d uvolt\n",
 439           sc->def->name,
 440           uvolt);
 441
 442         return (0);
 443 }
 444
 445 static int
 446 rk805_regnode_get_voltage(struct regnode *regnode, int *uvolt)
 447 {
 448         struct rk805_reg_sc *sc;
 449         uint8_t val;
 450
 451         sc = regnode_get_softc(regnode);
 452
 453         if (!sc->def->voltage_step)
 454                 return (ENXIO);
 455
 456         rk805_read(sc->base_dev, sc->def->voltage_reg, &val, 1);
 457         rk805_regnode_reg_to_voltage(sc, val & sc->def->voltage_mask, uvolt);
 458
 459         dprintf(sc, "Regulator %s is at %d uvolt\n",
 460           sc->def->name,
 461           *uvolt);
 462
 463         return (0);
 464 }
 465
 466 static regnode_method_t rk805_regnode_methods[] = {
 467         /* Regulator interface */
 468         REGNODEMETHOD(regnode_init,             rk805_regnode_init),
 469         REGNODEMETHOD(regnode_enable,           rk805_regnode_enable),
 470         REGNODEMETHOD(regnode_set_voltage,      rk805_regnode_set_voltage),
 471         REGNODEMETHOD(regnode_get_voltage,      rk805_regnode_get_voltage),
 472         REGNODEMETHOD(regnode_check_voltage,    regnode_method_check_voltage),
 473         REGNODEMETHOD_END
 474 };
 475 DEFINE_CLASS_1(rk805_regnode, rk805_regnode_class, rk805_regnode_methods,
 476     sizeof(struct rk805_reg_sc), regnode_class);
 477
 478 static struct rk805_reg_sc *
 479 rk805_reg_attach(device_t dev, phandle_t node,
 480     struct rk805_regdef *def)
 481 {
 482         struct rk805_reg_sc *reg_sc;
 483         struct regnode_init_def initdef;
 484         struct regnode *regnode;
 485
 486         memset(&initdef, 0, sizeof(initdef));
 487         if (regulator_parse_ofw_stdparam(dev, node, &initdef) != 0) {
 488                 device_printf(dev, "cannot create regulator\n");
 489                 return (NULL);
 490         }
 491         if (initdef.std_param.min_uvolt == 0)
 492                 initdef.std_param.min_uvolt = def->voltage_min;
 493         if (initdef.std_param.max_uvolt == 0)
 494                 initdef.std_param.max_uvolt = def->voltage_max;
 495         initdef.id = def->id;
 496         initdef.ofw_node = node;
 497
 498         regnode = regnode_create(dev, &rk805_regnode_class, &initdef);
 499         if (regnode == NULL) {
 500                 device_printf(dev, "cannot create regulator\n");
 501                 return (NULL);
 502         }
 503
 504         reg_sc = regnode_get_softc(regnode);
 505         reg_sc->regnode = regnode;
 506         reg_sc->base_dev = dev;
 507         reg_sc->def = def;
 508         reg_sc->xref = OF_xref_from_node(node);
 509         reg_sc->param = regnode_get_stdparam(regnode);
 510
 511         regnode_register(regnode);
 512
 513         return (reg_sc);
 514 }
 515
 516 static int
 517 rk805_probe(device_t dev)
 518 {
 519         if (!ofw_bus_status_okay(dev))
 520                 return (ENXIO);
 521
 522         if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
 523                 return (ENXIO);
 524
 525         device_set_desc(dev, "RockChip RK805 PMIC");
 526         return (BUS_PROBE_DEFAULT);
 527 }
 528
 529 static void
 530 rk805_start(void *pdev)
 531 {
 532         struct rk805_softc *sc;
 533         device_t dev;
 534         uint8_t data[2];
 535         int err;
 536
 537         dev = pdev;
 538         sc = device_get_softc(dev);
 539         sc->dev = dev;
 540
 541         /* No version register in RK808 */
 542         if (bootverbose && sc->type == RK805) {
 543                 err = rk805_read(dev, RK805_CHIP_NAME, data, 1);
 544                 if (err != 0) {
 545                         device_printf(dev, "Cannot read chip name reg\n");
 546                         return;
 547                 }
 548                 err = rk805_read(dev, RK805_CHIP_VER, data + 1, 1);
 549                 if (err != 0) {
 550                         device_printf(dev, "Cannot read chip version reg\n");
 551                         return;
 552                 }
 553                 device_printf(dev, "Chip Name: %x\n",
 554                     data[0] << 4 | ((data[1] >> 4) & 0xf));
 555                 device_printf(dev, "Chip Version: %x\n", data[1] & 0xf);
 556         }
 557
 558         config_intrhook_disestablish(&sc->intr_hook);
 559 }
 560
 561 static int
 562 rk805_attach(device_t dev)
 563 {
 564         struct rk805_softc *sc;
 565         struct rk805_reg_sc *reg;
 566         struct rk805_regdef *regdefs;
 567         phandle_t rnode, child;
 568         int i;
 569
 570         sc = device_get_softc(dev);
 571
 572         sc->intr_hook.ich_func = rk805_start;
 573         sc->intr_hook.ich_arg = dev;
 574
 575         if (config_intrhook_establish(&sc->intr_hook) != 0)
 576                 return (ENOMEM);
 577
 578         sc->type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
 579         switch (sc->type) {
 580         case RK805:
 581                 regdefs = rk805_regdefs;
 582                 sc->nregs = nitems(rk805_regdefs);
 583                 break;
 584         case RK808:
 585                 regdefs = rk808_regdefs;
 586                 sc->nregs = nitems(rk808_regdefs);
 587                 break;
 588         default:
 589                 device_printf(dev, "Unknown type %d\n", sc->type);
 590                 return (ENXIO);
 591         }
 592
 593         sc->regs = malloc(sizeof(struct rk805_reg_sc *) * sc->nregs,
 594             M_RK805_REG, M_WAITOK | M_ZERO);
 595
 596         rnode = ofw_bus_find_child(ofw_bus_get_node(dev), "regulators");
 597         if (rnode > 0) {
 598                 for (i = 0; i < sc->nregs; i++) {
 599                         child = ofw_bus_find_child(rnode,
 600                             regdefs[i].name);
 601                         if (child == 0)
 602                                 continue;
 603                         reg = rk805_reg_attach(dev, child, &regdefs[i]);
 604                         if (reg == NULL) {
 605                                 device_printf(dev,
 606                                     "cannot attach regulator %s\n",
 607                                     regdefs[i].name);
 608                                 continue;
 609                         }
 610                         sc->regs[i] = reg;
 611                         if (bootverbose)
 612                                 device_printf(dev, "Regulator %s attached\n",
 613                                     regdefs[i].name);
 614                 }
 615         }
 616
 617         return (0);
 618 }
 619
 620 static int
 621 rk805_detach(device_t dev)
 622 {
 623
 624         /* We cannot detach regulators */
 625         return (EBUSY);
 626 }
 627
 628 static int
 629 rk805_map(device_t dev, phandle_t xref, int ncells,
 630     pcell_t *cells, intptr_t *id)
 631 {
 632         struct rk805_softc *sc;
 633         int i;
 634
 635         sc = device_get_softc(dev);
 636
 637         for (i = 0; i < sc->nregs; i++) {
 638                 if (sc->regs[i]->xref == xref) {
 639                         *id = sc->regs[i]->def->id;
 640                         return (0);
 641                 }
 642         }
 643
 644         return (ERANGE);
 645 }
 646
 647 static device_method_t rk805_methods[] = {
 648         DEVMETHOD(device_probe,         rk805_probe),
 649         DEVMETHOD(device_attach,        rk805_attach),
 650         DEVMETHOD(device_detach,        rk805_detach),
 651
 652         /* regdev interface */
 653         DEVMETHOD(regdev_map,           rk805_map),
 654         DEVMETHOD_END
 655 };
 656
 657 static driver_t rk805_driver = {
 658         "rk805_pmu",
 659         rk805_methods,
 660         sizeof(struct rk805_softc),
 661 };
 662
 663 static devclass_t rk805_devclass;
 664
 665 EARLY_DRIVER_MODULE(rk805, iicbus, rk805_driver, rk805_devclass, 0, 0,
 666     BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LAST);
 667 MODULE_DEPEND(rk805, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER);
 668 MODULE_VERSION(rk805, 1);