hw/gpio/omap_gpio.c

   1 /*
   2  * TI OMAP processors GPIO emulation.
   3  *
   4  * Copyright (C) 2006-2008 Andrzej Zaborowski  <balrog@zabor.org>
   5  * Copyright (C) 2007-2009 Nokia Corporation
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 or
  10  * (at your option) version 3 of the License.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "qemu/osdep.h"
  22 #include "hw/hw.h"
  23 #include "hw/arm/omap.h"
  24 #include "hw/sysbus.h"
  25 #include "qemu/error-report.h"
  26 #include "qapi/error.h"
  27
  28 struct omap_gpio_s {
  29     qemu_irq irq;
  30     qemu_irq handler[16];
  31
  32     uint16_t inputs;
  33     uint16_t outputs;
  34     uint16_t dir;
  35     uint16_t edge;
  36     uint16_t mask;
  37     uint16_t ints;
  38     uint16_t pins;
  39 };
  40
  41 #define TYPE_OMAP1_GPIO "omap-gpio"
  42 #define OMAP1_GPIO(obj) \
  43     OBJECT_CHECK(struct omap_gpif_s, (obj), TYPE_OMAP1_GPIO)
  44
  45 struct omap_gpif_s {
  46     SysBusDevice parent_obj;
  47
  48     MemoryRegion iomem;
  49     int mpu_model;
  50     void *clk;
  51     struct omap_gpio_s omap1;
  52 };
  53
  54 /* General-Purpose I/O of OMAP1 */
  55 static void omap_gpio_set(void *opaque, int line, int level)
  56 {
  57     struct omap_gpio_s *s = &((struct omap_gpif_s *) opaque)->omap1;
  58     uint16_t prev = s->inputs;
  59
  60     if (level)
  61         s->inputs |= 1 << line;
  62     else
  63         s->inputs &= ~(1 << line);
  64
  65     if (((s->edge & s->inputs & ~prev) | (~s->edge & ~s->inputs & prev)) &
  66                     (1 << line) & s->dir & ~s->mask) {
  67         s->ints |= 1 << line;
  68         qemu_irq_raise(s->irq);
  69     }
  70 }
  71
  72 static uint64_t omap_gpio_read(void *opaque, hwaddr addr,
  73                                unsigned size)
  74 {
  75     struct omap_gpio_s *s = (struct omap_gpio_s *) opaque;
  76     int offset = addr & OMAP_MPUI_REG_MASK;
  77
  78     if (size != 2) {
  79         return omap_badwidth_read16(opaque, addr);
  80     }
  81
  82     switch (offset) {
  83     case 0x00:  /* DATA_INPUT */
  84         return s->inputs & s->pins;
  85
  86     case 0x04:  /* DATA_OUTPUT */
  87         return s->outputs;
  88
  89     case 0x08:  /* DIRECTION_CONTROL */
  90         return s->dir;
  91
  92     case 0x0c:  /* INTERRUPT_CONTROL */
  93         return s->edge;
  94
  95     case 0x10:  /* INTERRUPT_MASK */
  96         return s->mask;
  97
  98     case 0x14:  /* INTERRUPT_STATUS */
  99         return s->ints;
 100
 101     case 0x18:  /* PIN_CONTROL (not in OMAP310) */
 102         OMAP_BAD_REG(addr);
 103         return s->pins;
 104     }
 105
 106     OMAP_BAD_REG(addr);
 107     return 0;
 108 }
 109
 110 static void omap_gpio_write(void *opaque, hwaddr addr,
 111                             uint64_t value, unsigned size)
 112 {
 113     struct omap_gpio_s *s = (struct omap_gpio_s *) opaque;
 114     int offset = addr & OMAP_MPUI_REG_MASK;
 115     uint16_t diff;
 116     int ln;
 117
 118     if (size != 2) {
 119         omap_badwidth_write16(opaque, addr, value);
 120         return;
 121     }
 122
 123     switch (offset) {
 124     case 0x00:  /* DATA_INPUT */
 125         OMAP_RO_REG(addr);
 126         return;
 127
 128     case 0x04:  /* DATA_OUTPUT */
 129         diff = (s->outputs ^ value) & ~s->dir;
 130         s->outputs = value;
 131         while ((ln = ctz32(diff)) != 32) {
 132             if (s->handler[ln])
 133                 qemu_set_irq(s->handler[ln], (value >> ln) & 1);
 134             diff &= ~(1 << ln);
 135         }
 136         break;
 137
 138     case 0x08:  /* DIRECTION_CONTROL */
 139         diff = s->outputs & (s->dir ^ value);
 140         s->dir = value;
 141
 142         value = s->outputs & ~s->dir;
 143         while ((ln = ctz32(diff)) != 32) {
 144             if (s->handler[ln])
 145                 qemu_set_irq(s->handler[ln], (value >> ln) & 1);
 146             diff &= ~(1 << ln);
 147         }
 148         break;
 149
 150     case 0x0c:  /* INTERRUPT_CONTROL */
 151         s->edge = value;
 152         break;
 153
 154     case 0x10:  /* INTERRUPT_MASK */
 155         s->mask = value;
 156         break;
 157
 158     case 0x14:  /* INTERRUPT_STATUS */
 159         s->ints &= ~value;
 160         if (!s->ints)
 161             qemu_irq_lower(s->irq);
 162         break;
 163
 164     case 0x18:  /* PIN_CONTROL (not in OMAP310 TRM) */
 165         OMAP_BAD_REG(addr);
 166         s->pins = value;
 167         break;
 168
 169     default:
 170         OMAP_BAD_REG(addr);
 171         return;
 172     }
 173 }
 174
 175 /* *Some* sources say the memory region is 32-bit.  */
 176 static const MemoryRegionOps omap_gpio_ops = {
 177     .read = omap_gpio_read,
 178     .write = omap_gpio_write,
 179     .endianness = DEVICE_NATIVE_ENDIAN,
 180 };
 181
 182 static void omap_gpio_reset(struct omap_gpio_s *s)
 183 {
 184     s->inputs = 0;
 185     s->outputs = ~0;
 186     s->dir = ~0;
 187     s->edge = ~0;
 188     s->mask = ~0;
 189     s->ints = 0;
 190     s->pins = ~0;
 191 }
 192
 193 struct omap2_gpio_s {
 194     qemu_irq irq[2];
 195     qemu_irq wkup;
 196     qemu_irq *handler;
 197     MemoryRegion iomem;
 198
 199     uint8_t revision;
 200     uint8_t config[2];
 201     uint32_t inputs;
 202     uint32_t outputs;
 203     uint32_t dir;
 204     uint32_t level[2];
 205     uint32_t edge[2];
 206     uint32_t mask[2];
 207     uint32_t wumask;
 208     uint32_t ints[2];
 209     uint32_t debounce;
 210     uint8_t delay;
 211 };
 212
 213 #define TYPE_OMAP2_GPIO "omap2-gpio"
 214 #define OMAP2_GPIO(obj) \
 215     OBJECT_CHECK(struct omap2_gpif_s, (obj), TYPE_OMAP2_GPIO)
 216
 217 struct omap2_gpif_s {
 218     SysBusDevice parent_obj;
 219
 220     MemoryRegion iomem;
 221     int mpu_model;
 222     void *iclk;
 223     void *fclk[6];
 224     int modulecount;
 225     struct omap2_gpio_s *modules;
 226     qemu_irq *handler;
 227     int autoidle;
 228     int gpo;
 229 };
 230
 231 /* General-Purpose Interface of OMAP2/3 */
 232 static inline void omap2_gpio_module_int_update(struct omap2_gpio_s *s,
 233                                                 int line)
 234 {
 235     qemu_set_irq(s->irq[line], s->ints[line] & s->mask[line]);
 236 }
 237
 238 static void omap2_gpio_module_wake(struct omap2_gpio_s *s, int line)
 239 {
 240     if (!(s->config[0] & (1 << 2)))                     /* ENAWAKEUP */
 241         return;
 242     if (!(s->config[0] & (3 << 3)))                     /* Force Idle */
 243         return;
 244     if (!(s->wumask & (1 << line)))
 245         return;
 246
 247     qemu_irq_raise(s->wkup);
 248 }
 249
 250 static inline void omap2_gpio_module_out_update(struct omap2_gpio_s *s,
 251                 uint32_t diff)
 252 {
 253     int ln;
 254
 255     s->outputs ^= diff;
 256     diff &= ~s->dir;
 257     while ((ln = ctz32(diff)) != 32) {
 258         qemu_set_irq(s->handler[ln], (s->outputs >> ln) & 1);
 259         diff &= ~(1 << ln);
 260     }
 261 }
 262
 263 static void omap2_gpio_module_level_update(struct omap2_gpio_s *s, int line)
 264 {
 265     s->ints[line] |= s->dir &
 266             ((s->inputs & s->level[1]) | (~s->inputs & s->level[0]));
 267     omap2_gpio_module_int_update(s, line);
 268 }
 269
 270 static inline void omap2_gpio_module_int(struct omap2_gpio_s *s, int line)
 271 {
 272     s->ints[0] |= 1 << line;
 273     omap2_gpio_module_int_update(s, 0);
 274     s->ints[1] |= 1 << line;
 275     omap2_gpio_module_int_update(s, 1);
 276     omap2_gpio_module_wake(s, line);
 277 }
 278
 279 static void omap2_gpio_set(void *opaque, int line, int level)
 280 {
 281     struct omap2_gpif_s *p = opaque;
 282     struct omap2_gpio_s *s = &p->modules[line >> 5];
 283
 284     line &= 31;
 285     if (level) {
 286         if (s->dir & (1 << line) & ((~s->inputs & s->edge[0]) | s->level[1]))
 287             omap2_gpio_module_int(s, line);
 288         s->inputs |= 1 << line;
 289     } else {
 290         if (s->dir & (1 << line) & ((s->inputs & s->edge[1]) | s->level[0]))
 291             omap2_gpio_module_int(s, line);
 292         s->inputs &= ~(1 << line);
 293     }
 294 }
 295
 296 static void omap2_gpio_module_reset(struct omap2_gpio_s *s)
 297 {
 298     s->config[0] = 0;
 299     s->config[1] = 2;
 300     s->ints[0] = 0;
 301     s->ints[1] = 0;
 302     s->mask[0] = 0;
 303     s->mask[1] = 0;
 304     s->wumask = 0;
 305     s->dir = ~0;
 306     s->level[0] = 0;
 307     s->level[1] = 0;
 308     s->edge[0] = 0;
 309     s->edge[1] = 0;
 310     s->debounce = 0;
 311     s->delay = 0;
 312 }
 313
 314 static uint32_t omap2_gpio_module_read(void *opaque, hwaddr addr)
 315 {
 316     struct omap2_gpio_s *s = (struct omap2_gpio_s *) opaque;
 317
 318     switch (addr) {
 319     case 0x00:  /* GPIO_REVISION */
 320         return s->revision;
 321
 322     case 0x10:  /* GPIO_SYSCONFIG */
 323         return s->config[0];
 324
 325     case 0x14:  /* GPIO_SYSSTATUS */
 326         return 0x01;
 327
 328     case 0x18:  /* GPIO_IRQSTATUS1 */
 329         return s->ints[0];
 330
 331     case 0x1c:  /* GPIO_IRQENABLE1 */
 332     case 0x60:  /* GPIO_CLEARIRQENABLE1 */
 333     case 0x64:  /* GPIO_SETIRQENABLE1 */
 334         return s->mask[0];
 335
 336     case 0x20:  /* GPIO_WAKEUPENABLE */
 337     case 0x80:  /* GPIO_CLEARWKUENA */
 338     case 0x84:  /* GPIO_SETWKUENA */
 339         return s->wumask;
 340
 341     case 0x28:  /* GPIO_IRQSTATUS2 */
 342         return s->ints[1];
 343
 344     case 0x2c:  /* GPIO_IRQENABLE2 */
 345     case 0x70:  /* GPIO_CLEARIRQENABLE2 */
 346     case 0x74:  /* GPIO_SETIREQNEABLE2 */
 347         return s->mask[1];
 348
 349     case 0x30:  /* GPIO_CTRL */
 350         return s->config[1];
 351
 352     case 0x34:  /* GPIO_OE */
 353         return s->dir;
 354
 355     case 0x38:  /* GPIO_DATAIN */
 356         return s->inputs;
 357
 358     case 0x3c:  /* GPIO_DATAOUT */
 359     case 0x90:  /* GPIO_CLEARDATAOUT */
 360     case 0x94:  /* GPIO_SETDATAOUT */
 361         return s->outputs;
 362
 363     case 0x40:  /* GPIO_LEVELDETECT0 */
 364         return s->level[0];
 365
 366     case 0x44:  /* GPIO_LEVELDETECT1 */
 367         return s->level[1];
 368
 369     case 0x48:  /* GPIO_RISINGDETECT */
 370         return s->edge[0];
 371
 372     case 0x4c:  /* GPIO_FALLINGDETECT */
 373         return s->edge[1];
 374
 375     case 0x50:  /* GPIO_DEBOUNCENABLE */
 376         return s->debounce;
 377
 378     case 0x54:  /* GPIO_DEBOUNCINGTIME */
 379         return s->delay;
 380     }
 381
 382     OMAP_BAD_REG(addr);
 383     return 0;
 384 }
 385
 386 static void omap2_gpio_module_write(void *opaque, hwaddr addr,
 387                 uint32_t value)
 388 {
 389     struct omap2_gpio_s *s = (struct omap2_gpio_s *) opaque;
 390     uint32_t diff;
 391     int ln;
 392
 393     switch (addr) {
 394     case 0x00:  /* GPIO_REVISION */
 395     case 0x14:  /* GPIO_SYSSTATUS */
 396     case 0x38:  /* GPIO_DATAIN */
 397         OMAP_RO_REG(addr);
 398         break;
 399
 400     case 0x10:  /* GPIO_SYSCONFIG */
 401         if (((value >> 3) & 3) == 3)
 402             fprintf(stderr, "%s: bad IDLEMODE value\n", __FUNCTION__);
 403         if (value & 2)
 404             omap2_gpio_module_reset(s);
 405         s->config[0] = value & 0x1d;
 406         break;
 407
 408     case 0x18:  /* GPIO_IRQSTATUS1 */
 409         if (s->ints[0] & value) {
 410             s->ints[0] &= ~value;
 411             omap2_gpio_module_level_update(s, 0);
 412         }
 413         break;
 414
 415     case 0x1c:  /* GPIO_IRQENABLE1 */
 416         s->mask[0] = value;
 417         omap2_gpio_module_int_update(s, 0);
 418         break;
 419
 420     case 0x20:  /* GPIO_WAKEUPENABLE */
 421         s->wumask = value;
 422         break;
 423
 424     case 0x28:  /* GPIO_IRQSTATUS2 */
 425         if (s->ints[1] & value) {
 426             s->ints[1] &= ~value;
 427             omap2_gpio_module_level_update(s, 1);
 428         }
 429         break;
 430
 431     case 0x2c:  /* GPIO_IRQENABLE2 */
 432         s->mask[1] = value;
 433         omap2_gpio_module_int_update(s, 1);
 434         break;
 435
 436     case 0x30:  /* GPIO_CTRL */
 437         s->config[1] = value & 7;
 438         break;
 439
 440     case 0x34:  /* GPIO_OE */
 441         diff = s->outputs & (s->dir ^ value);
 442         s->dir = value;
 443
 444         value = s->outputs & ~s->dir;
 445         while ((ln = ctz32(diff)) != 32) {
 446             diff &= ~(1 << ln);
 447             qemu_set_irq(s->handler[ln], (value >> ln) & 1);
 448         }
 449
 450         omap2_gpio_module_level_update(s, 0);
 451         omap2_gpio_module_level_update(s, 1);
 452         break;
 453
 454     case 0x3c:  /* GPIO_DATAOUT */
 455         omap2_gpio_module_out_update(s, s->outputs ^ value);
 456         break;
 457
 458     case 0x40:  /* GPIO_LEVELDETECT0 */
 459         s->level[0] = value;
 460         omap2_gpio_module_level_update(s, 0);
 461         omap2_gpio_module_level_update(s, 1);
 462         break;
 463
 464     case 0x44:  /* GPIO_LEVELDETECT1 */
 465         s->level[1] = value;
 466         omap2_gpio_module_level_update(s, 0);
 467         omap2_gpio_module_level_update(s, 1);
 468         break;
 469
 470     case 0x48:  /* GPIO_RISINGDETECT */
 471         s->edge[0] = value;
 472         break;
 473
 474     case 0x4c:  /* GPIO_FALLINGDETECT */
 475         s->edge[1] = value;
 476         break;
 477
 478     case 0x50:  /* GPIO_DEBOUNCENABLE */
 479         s->debounce = value;
 480         break;
 481
 482     case 0x54:  /* GPIO_DEBOUNCINGTIME */
 483         s->delay = value;
 484         break;
 485
 486     case 0x60:  /* GPIO_CLEARIRQENABLE1 */
 487         s->mask[0] &= ~value;
 488         omap2_gpio_module_int_update(s, 0);
 489         break;
 490
 491     case 0x64:  /* GPIO_SETIRQENABLE1 */
 492         s->mask[0] |= value;
 493         omap2_gpio_module_int_update(s, 0);
 494         break;
 495
 496     case 0x70:  /* GPIO_CLEARIRQENABLE2 */
 497         s->mask[1] &= ~value;
 498         omap2_gpio_module_int_update(s, 1);
 499         break;
 500
 501     case 0x74:  /* GPIO_SETIREQNEABLE2 */
 502         s->mask[1] |= value;
 503         omap2_gpio_module_int_update(s, 1);
 504         break;
 505
 506     case 0x80:  /* GPIO_CLEARWKUENA */
 507         s->wumask &= ~value;
 508         break;
 509
 510     case 0x84:  /* GPIO_SETWKUENA */
 511         s->wumask |= value;
 512         break;
 513
 514     case 0x90:  /* GPIO_CLEARDATAOUT */
 515         omap2_gpio_module_out_update(s, s->outputs & value);
 516         break;
 517
 518     case 0x94:  /* GPIO_SETDATAOUT */
 519         omap2_gpio_module_out_update(s, ~s->outputs & value);
 520         break;
 521
 522     default:
 523         OMAP_BAD_REG(addr);
 524         return;
 525     }
 526 }
 527
 528 static uint32_t omap2_gpio_module_readp(void *opaque, hwaddr addr)
 529 {
 530     return omap2_gpio_module_read(opaque, addr & ~3) >> ((addr & 3) << 3);
 531 }
 532
 533 static void omap2_gpio_module_writep(void *opaque, hwaddr addr,
 534                 uint32_t value)
 535 {
 536     uint32_t cur = 0;
 537     uint32_t mask = 0xffff;
 538
 539     switch (addr & ~3) {
 540     case 0x00:  /* GPIO_REVISION */
 541     case 0x14:  /* GPIO_SYSSTATUS */
 542     case 0x38:  /* GPIO_DATAIN */
 543         OMAP_RO_REG(addr);
 544         break;
 545
 546     case 0x10:  /* GPIO_SYSCONFIG */
 547     case 0x1c:  /* GPIO_IRQENABLE1 */
 548     case 0x20:  /* GPIO_WAKEUPENABLE */
 549     case 0x2c:  /* GPIO_IRQENABLE2 */
 550     case 0x30:  /* GPIO_CTRL */
 551     case 0x34:  /* GPIO_OE */
 552     case 0x3c:  /* GPIO_DATAOUT */
 553     case 0x40:  /* GPIO_LEVELDETECT0 */
 554     case 0x44:  /* GPIO_LEVELDETECT1 */
 555     case 0x48:  /* GPIO_RISINGDETECT */
 556     case 0x4c:  /* GPIO_FALLINGDETECT */
 557     case 0x50:  /* GPIO_DEBOUNCENABLE */
 558     case 0x54:  /* GPIO_DEBOUNCINGTIME */
 559         cur = omap2_gpio_module_read(opaque, addr & ~3) &
 560                 ~(mask << ((addr & 3) << 3));
 561
 562         /* Fall through.  */
 563     case 0x18:  /* GPIO_IRQSTATUS1 */
 564     case 0x28:  /* GPIO_IRQSTATUS2 */
 565     case 0x60:  /* GPIO_CLEARIRQENABLE1 */
 566     case 0x64:  /* GPIO_SETIRQENABLE1 */
 567     case 0x70:  /* GPIO_CLEARIRQENABLE2 */
 568     case 0x74:  /* GPIO_SETIREQNEABLE2 */
 569     case 0x80:  /* GPIO_CLEARWKUENA */
 570     case 0x84:  /* GPIO_SETWKUENA */
 571     case 0x90:  /* GPIO_CLEARDATAOUT */
 572     case 0x94:  /* GPIO_SETDATAOUT */
 573         value <<= (addr & 3) << 3;
 574         omap2_gpio_module_write(opaque, addr, cur | value);
 575         break;
 576
 577     default:
 578         OMAP_BAD_REG(addr);
 579         return;
 580     }
 581 }
 582
 583 static const MemoryRegionOps omap2_gpio_module_ops = {
 584     .old_mmio = {
 585         .read = {
 586             omap2_gpio_module_readp,
 587             omap2_gpio_module_readp,
 588             omap2_gpio_module_read,
 589         },
 590         .write = {
 591             omap2_gpio_module_writep,
 592             omap2_gpio_module_writep,
 593             omap2_gpio_module_write,
 594         },
 595     },
 596     .endianness = DEVICE_NATIVE_ENDIAN,
 597 };
 598
 599 static void omap_gpif_reset(DeviceState *dev)
 600 {
 601     struct omap_gpif_s *s = OMAP1_GPIO(dev);
 602
 603     omap_gpio_reset(&s->omap1);
 604 }
 605
 606 static void omap2_gpif_reset(DeviceState *dev)
 607 {
 608     struct omap2_gpif_s *s = OMAP2_GPIO(dev);
 609     int i;
 610
 611     for (i = 0; i < s->modulecount; i++) {
 612         omap2_gpio_module_reset(&s->modules[i]);
 613     }
 614     s->autoidle = 0;
 615     s->gpo = 0;
 616 }
 617
 618 static uint64_t omap2_gpif_top_read(void *opaque, hwaddr addr,
 619                                     unsigned size)
 620 {
 621     struct omap2_gpif_s *s = (struct omap2_gpif_s *) opaque;
 622
 623     switch (addr) {
 624     case 0x00:  /* IPGENERICOCPSPL_REVISION */
 625         return 0x18;
 626
 627     case 0x10:  /* IPGENERICOCPSPL_SYSCONFIG */
 628         return s->autoidle;
 629
 630     case 0x14:  /* IPGENERICOCPSPL_SYSSTATUS */
 631         return 0x01;
 632
 633     case 0x18:  /* IPGENERICOCPSPL_IRQSTATUS */
 634         return 0x00;
 635
 636     case 0x40:  /* IPGENERICOCPSPL_GPO */
 637         return s->gpo;
 638
 639     case 0x50:  /* IPGENERICOCPSPL_GPI */
 640         return 0x00;
 641     }
 642
 643     OMAP_BAD_REG(addr);
 644     return 0;
 645 }
 646
 647 static void omap2_gpif_top_write(void *opaque, hwaddr addr,
 648                                  uint64_t value, unsigned size)
 649 {
 650     struct omap2_gpif_s *s = (struct omap2_gpif_s *) opaque;
 651
 652     switch (addr) {
 653     case 0x00:  /* IPGENERICOCPSPL_REVISION */
 654     case 0x14:  /* IPGENERICOCPSPL_SYSSTATUS */
 655     case 0x18:  /* IPGENERICOCPSPL_IRQSTATUS */
 656     case 0x50:  /* IPGENERICOCPSPL_GPI */
 657         OMAP_RO_REG(addr);
 658         break;
 659
 660     case 0x10:  /* IPGENERICOCPSPL_SYSCONFIG */
 661         if (value & (1 << 1))                                   /* SOFTRESET */
 662             omap2_gpif_reset(DEVICE(s));
 663         s->autoidle = value & 1;
 664         break;
 665
 666     case 0x40:  /* IPGENERICOCPSPL_GPO */
 667         s->gpo = value & 1;
 668         break;
 669
 670     default:
 671         OMAP_BAD_REG(addr);
 672         return;
 673     }
 674 }
 675
 676 static const MemoryRegionOps omap2_gpif_top_ops = {
 677     .read = omap2_gpif_top_read,
 678     .write = omap2_gpif_top_write,
 679     .endianness = DEVICE_NATIVE_ENDIAN,
 680 };
 681
 682 static void omap_gpio_init(Object *obj)
 683 {
 684     DeviceState *dev = DEVICE(obj);
 685     struct omap_gpif_s *s = OMAP1_GPIO(obj);
 686     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 687
 688     qdev_init_gpio_in(dev, omap_gpio_set, 16);
 689     qdev_init_gpio_out(dev, s->omap1.handler, 16);
 690     sysbus_init_irq(sbd, &s->omap1.irq);
 691     memory_region_init_io(&s->iomem, obj, &omap_gpio_ops, &s->omap1,
 692                           "omap.gpio", 0x1000);
 693     sysbus_init_mmio(sbd, &s->iomem);
 694 }
 695
 696 static void omap_gpio_realize(DeviceState *dev, Error **errp)
 697 {
 698     struct omap_gpif_s *s = OMAP1_GPIO(dev);
 699
 700     if (!s->clk) {
 701         error_setg(errp, "omap-gpio: clk not connected");
 702     }
 703 }
 704
 705 static void omap2_gpio_realize(DeviceState *dev, Error **errp)
 706 {
 707     struct omap2_gpif_s *s = OMAP2_GPIO(dev);
 708     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
 709     int i;
 710
 711     if (!s->iclk) {
 712         error_setg(errp, "omap2-gpio: iclk not connected");
 713         return;
 714     }
 715
 716     s->modulecount = s->mpu_model < omap2430 ? 4
 717         : s->mpu_model < omap3430 ? 5
 718         : 6;
 719
 720     if (s->mpu_model < omap3430) {
 721         memory_region_init_io(&s->iomem, OBJECT(dev), &omap2_gpif_top_ops, s,
 722                               "omap2.gpio", 0x1000);
 723         sysbus_init_mmio(sbd, &s->iomem);
 724     }
 725
 726     s->modules = g_new0(struct omap2_gpio_s, s->modulecount);
 727     s->handler = g_new0(qemu_irq, s->modulecount * 32);
 728     qdev_init_gpio_in(dev, omap2_gpio_set, s->modulecount * 32);
 729     qdev_init_gpio_out(dev, s->handler, s->modulecount * 32);
 730
 731     for (i = 0; i < s->modulecount; i++) {
 732         struct omap2_gpio_s *m = &s->modules[i];
 733
 734         if (!s->fclk[i]) {
 735             error_setg(errp, "omap2-gpio: fclk%d not connected", i);
 736             return;
 737         }
 738
 739         m->revision = (s->mpu_model < omap3430) ? 0x18 : 0x25;
 740         m->handler = &s->handler[i * 32];
 741         sysbus_init_irq(sbd, &m->irq[0]); /* mpu irq */
 742         sysbus_init_irq(sbd, &m->irq[1]); /* dsp irq */
 743         sysbus_init_irq(sbd, &m->wkup);
 744         memory_region_init_io(&m->iomem, OBJECT(dev), &omap2_gpio_module_ops, m,
 745                               "omap.gpio-module", 0x1000);
 746         sysbus_init_mmio(sbd, &m->iomem);
 747     }
 748 }
 749
 750 /* Using qdev pointer properties for the clocks is not ideal.
 751  * qdev should support a generic means of defining a 'port' with
 752  * an arbitrary interface for connecting two devices. Then we
 753  * could reframe the omap clock API in terms of clock ports,
 754  * and get some type safety. For now the best qdev provides is
 755  * passing an arbitrary pointer.
 756  * (It's not possible to pass in the string which is the clock
 757  * name, because this device does not have the necessary information
 758  * (ie the struct omap_mpu_state_s*) to do the clockname to pointer
 759  * translation.)
 760  */
 761
 762 static Property omap_gpio_properties[] = {
 763     DEFINE_PROP_INT32("mpu_model", struct omap_gpif_s, mpu_model, 0),
 764     DEFINE_PROP_PTR("clk", struct omap_gpif_s, clk),
 765     DEFINE_PROP_END_OF_LIST(),
 766 };
 767
 768 static void omap_gpio_class_init(ObjectClass *klass, void *data)
 769 {
 770     DeviceClass *dc = DEVICE_CLASS(klass);
 771
 772     dc->realize = omap_gpio_realize;
 773     dc->reset = omap_gpif_reset;
 774     dc->props = omap_gpio_properties;
 775     /* Reason: pointer property "clk" */
 776     dc->user_creatable = false;
 777 }
 778
 779 static const TypeInfo omap_gpio_info = {
 780     .name          = TYPE_OMAP1_GPIO,
 781     .parent        = TYPE_SYS_BUS_DEVICE,
 782     .instance_size = sizeof(struct omap_gpif_s),
 783     .instance_init = omap_gpio_init,
 784     .class_init    = omap_gpio_class_init,
 785 };
 786
 787 static Property omap2_gpio_properties[] = {
 788     DEFINE_PROP_INT32("mpu_model", struct omap2_gpif_s, mpu_model, 0),
 789     DEFINE_PROP_PTR("iclk", struct omap2_gpif_s, iclk),
 790     DEFINE_PROP_PTR("fclk0", struct omap2_gpif_s, fclk[0]),
 791     DEFINE_PROP_PTR("fclk1", struct omap2_gpif_s, fclk[1]),
 792     DEFINE_PROP_PTR("fclk2", struct omap2_gpif_s, fclk[2]),
 793     DEFINE_PROP_PTR("fclk3", struct omap2_gpif_s, fclk[3]),
 794     DEFINE_PROP_PTR("fclk4", struct omap2_gpif_s, fclk[4]),
 795     DEFINE_PROP_PTR("fclk5", struct omap2_gpif_s, fclk[5]),
 796     DEFINE_PROP_END_OF_LIST(),
 797 };
 798
 799 static void omap2_gpio_class_init(ObjectClass *klass, void *data)
 800 {
 801     DeviceClass *dc = DEVICE_CLASS(klass);
 802
 803     dc->realize = omap2_gpio_realize;
 804     dc->reset = omap2_gpif_reset;
 805     dc->props = omap2_gpio_properties;
 806     /* Reason: pointer properties "iclk", "fclk0", ..., "fclk5" */
 807     dc->user_creatable = false;
 808 }
 809
 810 static const TypeInfo omap2_gpio_info = {
 811     .name          = TYPE_OMAP2_GPIO,
 812     .parent        = TYPE_SYS_BUS_DEVICE,
 813     .instance_size = sizeof(struct omap2_gpif_s),
 814     .class_init    = omap2_gpio_class_init,
 815 };
 816
 817 static void omap_gpio_register_types(void)
 818 {
 819     type_register_static(&omap_gpio_info);
 820     type_register_static(&omap2_gpio_info);
 821 }
 822
 823 type_init(omap_gpio_register_types)