drivers/staging/dream/camera/msm_camera.c

   1 /*
   2  * Copyright (C) 2008-2009 QUALCOMM Incorporated.
   3  */
   4
   5 /* FIXME: most allocations need not be GFP_ATOMIC */
   6 /* FIXME: management of mutexes */
   7 /* FIXME: msm_pmem_region_lookup return values */
   8 /* FIXME: way too many copy to/from user */
   9 /* FIXME: does region->active mean free */
  10 /* FIXME: check limits on command lenghts passed from userspace */
  11 /* FIXME: __msm_release: which queues should we flush when opencnt != 0 */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/module.h>
  15 #include <linux/init.h>
  16 #include <linux/sched.h>
  17 #include <mach/board.h>
  18
  19 #include <linux/fs.h>
  20 #include <linux/list.h>
  21 #include <linux/uaccess.h>
  22 #include <linux/android_pmem.h>
  23 #include <linux/poll.h>
  24 #include <media/msm_camera.h>
  25 #include <mach/camera.h>
  26
  27 #define MSM_MAX_CAMERA_SENSORS 5
  28
  29 #define ERR_USER_COPY(to) pr_err("%s(%d): copy %s user\n", \
  30                                 __func__, __LINE__, ((to) ? "to" : "from"))
  31 #define ERR_COPY_FROM_USER() ERR_USER_COPY(0)
  32 #define ERR_COPY_TO_USER() ERR_USER_COPY(1)
  33
  34 static struct class *msm_class;
  35 static dev_t msm_devno;
  36 static LIST_HEAD(msm_sensors);
  37
  38 #define __CONTAINS(r, v, l, field) ({                           \
  39         typeof(r) __r = r;                                      \
  40         typeof(v) __v = v;                                      \
  41         typeof(v) __e = __v + l;                                \
  42         int res = __v >= __r->field &&                          \
  43                 __e <= __r->field + __r->len;                   \
  44         res;                                                    \
  45 })
  46
  47 #define CONTAINS(r1, r2, field) ({                              \
  48         typeof(r2) __r2 = r2;                                   \
  49         __CONTAINS(r1, __r2->field, __r2->len, field);          \
  50 })
  51
  52 #define IN_RANGE(r, v, field) ({                                \
  53         typeof(r) __r = r;                                      \
  54         typeof(v) __vv = v;                                     \
  55         int res = ((__vv >= __r->field) &&                      \
  56                 (__vv < (__r->field + __r->len)));              \
  57         res;                                                    \
  58 })
  59
  60 #define OVERLAPS(r1, r2, field) ({                              \
  61         typeof(r1) __r1 = r1;                                   \
  62         typeof(r2) __r2 = r2;                                   \
  63         typeof(__r2->field) __v = __r2->field;                  \
  64         typeof(__v) __e = __v + __r2->len - 1;                  \
  65         int res = (IN_RANGE(__r1, __v, field) ||                \
  66                    IN_RANGE(__r1, __e, field));                 \
  67         res;                                                    \
  68 })
  69
  70 #define MSM_DRAIN_QUEUE_NOSYNC(sync, name) do {                 \
  71         struct msm_queue_cmd *qcmd = NULL;                      \
  72         CDBG("%s: draining queue "#name"\n", __func__);         \
  73         while (!list_empty(&(sync)->name)) {                    \
  74                 qcmd = list_first_entry(&(sync)->name,          \
  75                         struct msm_queue_cmd, list);            \
  76                 list_del_init(&qcmd->list);                     \
  77                 kfree(qcmd);                                    \
  78         };                                                      \
  79 } while (0)
  80
  81 #define MSM_DRAIN_QUEUE(sync, name) do {                        \
  82         unsigned long flags;                                    \
  83         spin_lock_irqsave(&(sync)->name##_lock, flags);         \
  84         MSM_DRAIN_QUEUE_NOSYNC(sync, name);                     \
  85         spin_unlock_irqrestore(&(sync)->name##_lock, flags);    \
  86 } while (0)
  87
  88 static int check_overlap(struct hlist_head *ptype,
  89                         unsigned long paddr,
  90                         unsigned long len)
  91 {
  92         struct msm_pmem_region *region;
  93         struct msm_pmem_region t = { .paddr = paddr, .len = len };
  94         struct hlist_node *node;
  95
  96         hlist_for_each_entry(region, node, ptype, list) {
  97                 if (CONTAINS(region, &t, paddr) ||
  98                                 CONTAINS(&t, region, paddr) ||
  99                                 OVERLAPS(region, &t, paddr)) {
 100                         printk(KERN_ERR
 101                                 " region (PHYS %p len %ld)"
 102                                 " clashes with registered region"
 103                                 " (paddr %p len %ld)\n",
 104                                 (void *)t.paddr, t.len,
 105                                 (void *)region->paddr, region->len);
 106                         return -1;
 107                 }
 108         }
 109
 110         return 0;
 111 }
 112
 113 static int msm_pmem_table_add(struct hlist_head *ptype,
 114         struct msm_pmem_info *info)
 115 {
 116         struct file *file;
 117         unsigned long paddr;
 118         unsigned long vstart;
 119         unsigned long len;
 120         int rc;
 121         struct msm_pmem_region *region;
 122
 123         rc = get_pmem_file(info->fd, &paddr, &vstart, &len, &file);
 124         if (rc < 0) {
 125                 pr_err("msm_pmem_table_add: get_pmem_file fd %d error %d\n",
 126                         info->fd, rc);
 127                 return rc;
 128         }
 129
 130         if (check_overlap(ptype, paddr, len) < 0)
 131                 return -EINVAL;
 132
 133         CDBG("%s: type = %d, paddr = 0x%lx, vaddr = 0x%lx\n",
 134                 __func__,
 135                 info->type, paddr, (unsigned long)info->vaddr);
 136
 137         region = kmalloc(sizeof(*region), GFP_KERNEL);
 138         if (!region)
 139                 return -ENOMEM;
 140
 141         INIT_HLIST_NODE(&region->list);
 142
 143         region->type = info->type;
 144         region->vaddr = info->vaddr;
 145         region->paddr = paddr;
 146         region->len = len;
 147         region->file = file;
 148         region->y_off = info->y_off;
 149         region->cbcr_off = info->cbcr_off;
 150         region->fd = info->fd;
 151         region->active = info->active;
 152
 153         hlist_add_head(&(region->list), ptype);
 154
 155         return 0;
 156 }
 157
 158 /* return of 0 means failure */
 159 static uint8_t msm_pmem_region_lookup(struct hlist_head *ptype,
 160         int pmem_type, struct msm_pmem_region *reg, uint8_t maxcount)
 161 {
 162         struct msm_pmem_region *region;
 163         struct msm_pmem_region *regptr;
 164         struct hlist_node *node, *n;
 165
 166         uint8_t rc = 0;
 167
 168         regptr = reg;
 169
 170         hlist_for_each_entry_safe(region, node, n, ptype, list) {
 171                 if (region->type == pmem_type && region->active) {
 172                         *regptr = *region;
 173                         rc += 1;
 174                         if (rc >= maxcount)
 175                                 break;
 176                         regptr++;
 177                 }
 178         }
 179
 180         return rc;
 181 }
 182
 183 static unsigned long msm_pmem_frame_ptov_lookup(struct msm_sync *sync,
 184                 unsigned long pyaddr,
 185                 unsigned long pcbcraddr,
 186                 uint32_t *yoff, uint32_t *cbcroff, int *fd)
 187 {
 188         struct msm_pmem_region *region;
 189         struct hlist_node *node, *n;
 190
 191         hlist_for_each_entry_safe(region, node, n, &sync->frame, list) {
 192                 if (pyaddr == (region->paddr + region->y_off) &&
 193                                 pcbcraddr == (region->paddr +
 194                                                 region->cbcr_off) &&
 195                                 region->active) {
 196                         /* offset since we could pass vaddr inside
 197                          * a registerd pmem buffer
 198                          */
 199                         *yoff = region->y_off;
 200                         *cbcroff = region->cbcr_off;
 201                         *fd = region->fd;
 202                         region->active = 0;
 203                         return (unsigned long)(region->vaddr);
 204                 }
 205         }
 206
 207         return 0;
 208 }
 209
 210 static unsigned long msm_pmem_stats_ptov_lookup(struct msm_sync *sync,
 211                 unsigned long addr, int *fd)
 212 {
 213         struct msm_pmem_region *region;
 214         struct hlist_node *node, *n;
 215
 216         hlist_for_each_entry_safe(region, node, n, &sync->stats, list) {
 217                 if (addr == region->paddr && region->active) {
 218                         /* offset since we could pass vaddr inside a
 219                          * registered pmem buffer */
 220                         *fd = region->fd;
 221                         region->active = 0;
 222                         return (unsigned long)(region->vaddr);
 223                 }
 224         }
 225
 226         return 0;
 227 }
 228
 229 static unsigned long msm_pmem_frame_vtop_lookup(struct msm_sync *sync,
 230                 unsigned long buffer,
 231                 uint32_t yoff, uint32_t cbcroff, int fd)
 232 {
 233         struct msm_pmem_region *region;
 234         struct hlist_node *node, *n;
 235
 236         hlist_for_each_entry_safe(region,
 237                 node, n, &sync->frame, list) {
 238                 if (((unsigned long)(region->vaddr) == buffer) &&
 239                                 (region->y_off == yoff) &&
 240                                 (region->cbcr_off == cbcroff) &&
 241                                 (region->fd == fd) &&
 242                                 (region->active == 0)) {
 243
 244                         region->active = 1;
 245                         return region->paddr;
 246                 }
 247         }
 248
 249         return 0;
 250 }
 251
 252 static unsigned long msm_pmem_stats_vtop_lookup(
 253                 struct msm_sync *sync,
 254                 unsigned long buffer,
 255                 int fd)
 256 {
 257         struct msm_pmem_region *region;
 258         struct hlist_node *node, *n;
 259
 260         hlist_for_each_entry_safe(region, node, n, &sync->stats, list) {
 261                 if (((unsigned long)(region->vaddr) == buffer) &&
 262                                 (region->fd == fd) && region->active == 0) {
 263                         region->active = 1;
 264                         return region->paddr;
 265                 }
 266         }
 267
 268         return 0;
 269 }
 270
 271 static int __msm_pmem_table_del(struct msm_sync *sync,
 272                 struct msm_pmem_info *pinfo)
 273 {
 274         int rc = 0;
 275         struct msm_pmem_region *region;
 276         struct hlist_node *node, *n;
 277
 278         switch (pinfo->type) {
 279         case MSM_PMEM_OUTPUT1:
 280         case MSM_PMEM_OUTPUT2:
 281         case MSM_PMEM_THUMBAIL:
 282         case MSM_PMEM_MAINIMG:
 283         case MSM_PMEM_RAW_MAINIMG:
 284                 hlist_for_each_entry_safe(region, node, n,
 285                         &sync->frame, list) {
 286
 287                         if (pinfo->type == region->type &&
 288                                         pinfo->vaddr == region->vaddr &&
 289                                         pinfo->fd == region->fd) {
 290                                 hlist_del(node);
 291                                 put_pmem_file(region->file);
 292                                 kfree(region);
 293                         }
 294                 }
 295                 break;
 296
 297         case MSM_PMEM_AEC_AWB:
 298         case MSM_PMEM_AF:
 299                 hlist_for_each_entry_safe(region, node, n,
 300                         &sync->stats, list) {
 301
 302                         if (pinfo->type == region->type &&
 303                                         pinfo->vaddr == region->vaddr &&
 304                                         pinfo->fd == region->fd) {
 305                                 hlist_del(node);
 306                                 put_pmem_file(region->file);
 307                                 kfree(region);
 308                         }
 309                 }
 310                 break;
 311
 312         default:
 313                 rc = -EINVAL;
 314                 break;
 315         }
 316
 317         return rc;
 318 }
 319
 320 static int msm_pmem_table_del(struct msm_sync *sync, void __user *arg)
 321 {
 322         struct msm_pmem_info info;
 323
 324         if (copy_from_user(&info, arg, sizeof(info))) {
 325                 ERR_COPY_FROM_USER();
 326                 return -EFAULT;
 327         }
 328
 329         return __msm_pmem_table_del(sync, &info);
 330 }
 331
 332 static int __msm_get_frame(struct msm_sync *sync,
 333                 struct msm_frame *frame)
 334 {
 335         unsigned long flags;
 336         int rc = 0;
 337
 338         struct msm_queue_cmd *qcmd = NULL;
 339         struct msm_vfe_phy_info *pphy;
 340
 341         spin_lock_irqsave(&sync->prev_frame_q_lock, flags);
 342         if (!list_empty(&sync->prev_frame_q)) {
 343                 qcmd = list_first_entry(&sync->prev_frame_q,
 344                         struct msm_queue_cmd, list);
 345                 list_del_init(&qcmd->list);
 346         }
 347         spin_unlock_irqrestore(&sync->prev_frame_q_lock, flags);
 348
 349         if (!qcmd) {
 350                 pr_err("%s: no preview frame.\n", __func__);
 351                 return -EAGAIN;
 352         }
 353
 354         pphy = (struct msm_vfe_phy_info *)(qcmd->command);
 355
 356         frame->buffer =
 357                 msm_pmem_frame_ptov_lookup(sync,
 358                         pphy->y_phy,
 359                         pphy->cbcr_phy, &(frame->y_off),
 360                         &(frame->cbcr_off), &(frame->fd));
 361         if (!frame->buffer) {
 362                 pr_err("%s: cannot get frame, invalid lookup address "
 363                         "y=%x cbcr=%x offset=%d\n",
 364                         __func__,
 365                         pphy->y_phy,
 366                         pphy->cbcr_phy,
 367                         frame->y_off);
 368                 rc = -EINVAL;
 369         }
 370
 371         CDBG("__msm_get_frame: y=0x%x, cbcr=0x%x, qcmd=0x%x, virt_addr=0x%x\n",
 372                 pphy->y_phy, pphy->cbcr_phy, (int) qcmd, (int) frame->buffer);
 373
 374         kfree(qcmd);
 375         return rc;
 376 }
 377
 378 static int msm_get_frame(struct msm_sync *sync, void __user *arg)
 379 {
 380         int rc = 0;
 381         struct msm_frame frame;
 382
 383         if (copy_from_user(&frame,
 384                                 arg,
 385                                 sizeof(struct msm_frame))) {
 386                 ERR_COPY_FROM_USER();
 387                 return -EFAULT;
 388         }
 389
 390         rc = __msm_get_frame(sync, &frame);
 391         if (rc < 0)
 392                 return rc;
 393
 394         if (sync->croplen) {
 395                 if (frame.croplen > sync->croplen) {
 396                         pr_err("msm_get_frame: invalid frame croplen %d\n",
 397                                 frame.croplen);
 398                         return -EINVAL;
 399                 }
 400
 401                 if (copy_to_user((void *)frame.cropinfo,
 402                                 sync->cropinfo,
 403                                 sync->croplen)) {
 404                         ERR_COPY_TO_USER();
 405                         return -EFAULT;
 406                 }
 407         }
 408
 409         if (copy_to_user((void *)arg,
 410                                 &frame, sizeof(struct msm_frame))) {
 411                 ERR_COPY_TO_USER();
 412                 rc = -EFAULT;
 413         }
 414
 415         CDBG("Got frame!!!\n");
 416
 417         return rc;
 418 }
 419
 420 static int msm_enable_vfe(struct msm_sync *sync, void __user *arg)
 421 {
 422         int rc = -EIO;
 423         struct camera_enable_cmd cfg;
 424
 425         if (copy_from_user(&cfg,
 426                         arg,
 427                         sizeof(struct camera_enable_cmd))) {
 428                 ERR_COPY_FROM_USER();
 429                 return -EFAULT;
 430         }
 431
 432         if (sync->vfefn.vfe_enable)
 433                 rc = sync->vfefn.vfe_enable(&cfg);
 434
 435         CDBG("msm_enable_vfe: returned rc = %d\n", rc);
 436         return rc;
 437 }
 438
 439 static int msm_disable_vfe(struct msm_sync *sync, void __user *arg)
 440 {
 441         int rc = -EIO;
 442         struct camera_enable_cmd cfg;
 443
 444         if (copy_from_user(&cfg,
 445                         arg,
 446                         sizeof(struct camera_enable_cmd))) {
 447                 ERR_COPY_FROM_USER();
 448                 return -EFAULT;
 449         }
 450
 451         if (sync->vfefn.vfe_disable)
 452                 rc = sync->vfefn.vfe_disable(&cfg, NULL);
 453
 454         CDBG("msm_disable_vfe: returned rc = %d\n", rc);
 455         return rc;
 456 }
 457
 458 static struct msm_queue_cmd *__msm_control(struct msm_sync *sync,
 459                 struct msm_control_device_queue *queue,
 460                 struct msm_queue_cmd *qcmd,
 461                 int timeout)
 462 {
 463         unsigned long flags;
 464         int rc;
 465
 466         spin_lock_irqsave(&sync->msg_event_q_lock, flags);
 467         list_add_tail(&qcmd->list, &sync->msg_event_q);
 468         /* wake up config thread */
 469         wake_up(&sync->msg_event_wait);
 470         spin_unlock_irqrestore(&sync->msg_event_q_lock, flags);
 471
 472         if (!queue)
 473                 return NULL;
 474
 475         /* wait for config status */
 476         rc = wait_event_interruptible_timeout(
 477                         queue->ctrl_status_wait,
 478                         !list_empty_careful(&queue->ctrl_status_q),
 479                         timeout);
 480         if (list_empty_careful(&queue->ctrl_status_q)) {
 481                 if (!rc)
 482                         rc = -ETIMEDOUT;
 483                 if (rc < 0) {
 484                         pr_err("msm_control: wait_event error %d\n", rc);
 485 #if 0
 486                         /* This is a bit scary.  If we time out too early, we
 487                          * will free qcmd at the end of this function, and the
 488                          * dsp may do the same when it does respond, so we
 489                          * remove the message from the source queue.
 490                          */
 491                         pr_err("%s: error waiting for ctrl_status_q: %d\n",
 492                                 __func__, rc);
 493                         spin_lock_irqsave(&sync->msg_event_q_lock, flags);
 494                         list_del_init(&qcmd->list);
 495                         spin_unlock_irqrestore(&sync->msg_event_q_lock, flags);
 496 #endif
 497                         return ERR_PTR(rc);
 498                 }
 499         }
 500
 501         /* control command status is ready */
 502         spin_lock_irqsave(&queue->ctrl_status_q_lock, flags);
 503         BUG_ON(list_empty(&queue->ctrl_status_q));
 504         qcmd = list_first_entry(&queue->ctrl_status_q,
 505                         struct msm_queue_cmd, list);
 506         list_del_init(&qcmd->list);
 507         spin_unlock_irqrestore(&queue->ctrl_status_q_lock, flags);
 508
 509         return qcmd;
 510 }
 511
 512 static int msm_control(struct msm_control_device *ctrl_pmsm,
 513                         int block,
 514                         void __user *arg)
 515 {
 516         int rc = 0;
 517
 518         struct msm_sync *sync = ctrl_pmsm->pmsm->sync;
 519         struct msm_ctrl_cmd udata, *ctrlcmd;
 520         struct msm_queue_cmd *qcmd = NULL, *qcmd_temp;
 521
 522         if (copy_from_user(&udata, arg, sizeof(struct msm_ctrl_cmd))) {
 523                 ERR_COPY_FROM_USER();
 524                 rc = -EFAULT;
 525                 goto end;
 526         }
 527
 528         qcmd = kmalloc(sizeof(struct msm_queue_cmd) +
 529                                 sizeof(struct msm_ctrl_cmd) + udata.length,
 530                                 GFP_KERNEL);
 531         if (!qcmd) {
 532                 pr_err("msm_control: cannot allocate buffer\n");
 533                 rc = -ENOMEM;
 534                 goto end;
 535         }
 536
 537         qcmd->type = MSM_CAM_Q_CTRL;
 538         qcmd->command = ctrlcmd = (struct msm_ctrl_cmd *)(qcmd + 1);
 539         *ctrlcmd = udata;
 540         ctrlcmd->value = ctrlcmd + 1;
 541
 542         if (udata.length) {
 543                 if (copy_from_user(ctrlcmd->value,
 544                                 udata.value, udata.length)) {
 545                         ERR_COPY_FROM_USER();
 546                         rc = -EFAULT;
 547                         goto end;
 548                 }
 549         }
 550
 551         if (!block) {
 552                 /* qcmd will be set to NULL */
 553                 qcmd = __msm_control(sync, NULL, qcmd, 0);
 554                 goto end;
 555         }
 556
 557         qcmd_temp = __msm_control(sync,
 558                                   &ctrl_pmsm->ctrl_q,
 559                                   qcmd, MAX_SCHEDULE_TIMEOUT);
 560
 561         if (IS_ERR(qcmd_temp)) {
 562                 rc = PTR_ERR(qcmd_temp);
 563                 goto end;
 564         }
 565         qcmd = qcmd_temp;
 566
 567         if (qcmd->command) {
 568                 void __user *to = udata.value;
 569                 udata = *(struct msm_ctrl_cmd *)qcmd->command;
 570                 if (udata.length > 0) {
 571                         if (copy_to_user(to,
 572                                          udata.value,
 573                                          udata.length)) {
 574                                 ERR_COPY_TO_USER();
 575                                 rc = -EFAULT;
 576                                 goto end;
 577                         }
 578                 }
 579                 udata.value = to;
 580
 581                 if (copy_to_user((void *)arg, &udata,
 582                                 sizeof(struct msm_ctrl_cmd))) {
 583                         ERR_COPY_TO_USER();
 584                         rc = -EFAULT;
 585                         goto end;
 586                 }
 587         }
 588
 589 end:
 590         /* Note: if we get here as a result of an error, we will free the
 591          * qcmd that we kmalloc() in this function.  When we come here as
 592          * a result of a successful completion, we are freeing the qcmd that
 593          * we dequeued from queue->ctrl_status_q.
 594          */
 595         kfree(qcmd);
 596
 597         CDBG("msm_control: end rc = %d\n", rc);
 598         return rc;
 599 }
 600
 601 static int msm_get_stats(struct msm_sync *sync, void __user *arg)
 602 {
 603         unsigned long flags;
 604         int timeout;
 605         int rc = 0;
 606
 607         struct msm_stats_event_ctrl se;
 608
 609         struct msm_queue_cmd *qcmd = NULL;
 610         struct msm_ctrl_cmd  *ctrl = NULL;
 611         struct msm_vfe_resp  *data = NULL;
 612         struct msm_stats_buf stats;
 613
 614         if (copy_from_user(&se, arg,
 615                         sizeof(struct msm_stats_event_ctrl))) {
 616                 ERR_COPY_FROM_USER();
 617                 return -EFAULT;
 618         }
 619
 620         timeout = (int)se.timeout_ms;
 621
 622         CDBG("msm_get_stats timeout %d\n", timeout);
 623         rc = wait_event_interruptible_timeout(
 624                         sync->msg_event_wait,
 625                         !list_empty_careful(&sync->msg_event_q),
 626                         msecs_to_jiffies(timeout));
 627         if (list_empty_careful(&sync->msg_event_q)) {
 628                 if (rc == 0)
 629                         rc = -ETIMEDOUT;
 630                 if (rc < 0) {
 631                         pr_err("msm_get_stats error %d\n", rc);
 632                         return rc;
 633                 }
 634         }
 635         CDBG("msm_get_stats returned from wait: %d\n", rc);
 636
 637         spin_lock_irqsave(&sync->msg_event_q_lock, flags);
 638         BUG_ON(list_empty(&sync->msg_event_q));
 639         qcmd = list_first_entry(&sync->msg_event_q,
 640                         struct msm_queue_cmd, list);
 641         list_del_init(&qcmd->list);
 642         spin_unlock_irqrestore(&sync->msg_event_q_lock, flags);
 643
 644         CDBG("=== received from DSP === %d\n", qcmd->type);
 645
 646         switch (qcmd->type) {
 647         case MSM_CAM_Q_VFE_EVT:
 648         case MSM_CAM_Q_VFE_MSG:
 649                 data = (struct msm_vfe_resp *)(qcmd->command);
 650
 651                 /* adsp event and message */
 652                 se.resptype = MSM_CAM_RESP_STAT_EVT_MSG;
 653
 654                 /* 0 - msg from aDSP, 1 - event from mARM */
 655                 se.stats_event.type   = data->evt_msg.type;
 656                 se.stats_event.msg_id = data->evt_msg.msg_id;
 657                 se.stats_event.len    = data->evt_msg.len;
 658
 659                 CDBG("msm_get_stats, qcmd->type = %d\n", qcmd->type);
 660                 CDBG("length = %d\n", se.stats_event.len);
 661                 CDBG("msg_id = %d\n", se.stats_event.msg_id);
 662
 663                 if ((data->type == VFE_MSG_STATS_AF) ||
 664                                 (data->type == VFE_MSG_STATS_WE)) {
 665
 666                         stats.buffer =
 667                         msm_pmem_stats_ptov_lookup(sync,
 668                                         data->phy.sbuf_phy,
 669                                         &(stats.fd));
 670                         if (!stats.buffer) {
 671                                 pr_err("%s: msm_pmem_stats_ptov_lookup error\n",
 672                                         __func__);
 673                                 rc = -EINVAL;
 674                                 goto failure;
 675                         }
 676
 677                         if (copy_to_user((void *)(se.stats_event.data),
 678                                         &stats,
 679                                         sizeof(struct msm_stats_buf))) {
 680                                 ERR_COPY_TO_USER();
 681                                 rc = -EFAULT;
 682                                 goto failure;
 683                         }
 684                 } else if ((data->evt_msg.len > 0) &&
 685                                 (data->type == VFE_MSG_GENERAL)) {
 686                         if (copy_to_user((void *)(se.stats_event.data),
 687                                         data->evt_msg.data,
 688                                         data->evt_msg.len)) {
 689                                 ERR_COPY_TO_USER();
 690                                 rc = -EFAULT;
 691                         }
 692                 } else if (data->type == VFE_MSG_OUTPUT1 ||
 693                         data->type == VFE_MSG_OUTPUT2) {
 694                         if (copy_to_user((void *)(se.stats_event.data),
 695                                         data->extdata,
 696                                         data->extlen)) {
 697                                 ERR_COPY_TO_USER();
 698                                 rc = -EFAULT;
 699                         }
 700                 } else if (data->type == VFE_MSG_SNAPSHOT && sync->pict_pp) {
 701                         struct msm_postproc buf;
 702                         struct msm_pmem_region region;
 703                         buf.fmnum = msm_pmem_region_lookup(&sync->frame,
 704                                         MSM_PMEM_MAINIMG,
 705                                         &region, 1);
 706                         if (buf.fmnum == 1) {
 707                                 buf.fmain.buffer = (unsigned long)region.vaddr;
 708                                 buf.fmain.y_off  = region.y_off;
 709                                 buf.fmain.cbcr_off = region.cbcr_off;
 710                                 buf.fmain.fd = region.fd;
 711                         } else {
 712                                 buf.fmnum = msm_pmem_region_lookup(&sync->frame,
 713                                                 MSM_PMEM_RAW_MAINIMG,
 714                                                 &region, 1);
 715                                 if (buf.fmnum == 1) {
 716                                         buf.fmain.path = MSM_FRAME_PREV_2;
 717                                         buf.fmain.buffer =
 718                                                 (unsigned long)region.vaddr;
 719                                         buf.fmain.fd = region.fd;
 720                                 } else {
 721                                         pr_err("%s: pmem lookup failed\n",
 722                                                 __func__);
 723                                         rc = -EINVAL;
 724                                 }
 725                         }
 726
 727                         if (copy_to_user((void *)(se.stats_event.data), &buf,
 728                                         sizeof(buf))) {
 729                                 ERR_COPY_TO_USER();
 730                                 rc = -EFAULT;
 731                                 goto failure;
 732                         }
 733                         CDBG("snapshot copy_to_user!\n");
 734                 }
 735                 break;
 736
 737         case MSM_CAM_Q_CTRL:
 738                 /* control command from control thread */
 739                 ctrl = (struct msm_ctrl_cmd *)(qcmd->command);
 740
 741                 CDBG("msm_get_stats, qcmd->type = %d\n", qcmd->type);
 742                 CDBG("length = %d\n", ctrl->length);
 743
 744                 if (ctrl->length > 0) {
 745                         if (copy_to_user((void *)(se.ctrl_cmd.value),
 746                                                 ctrl->value,
 747                                                 ctrl->length)) {
 748                                 ERR_COPY_TO_USER();
 749                                 rc = -EFAULT;
 750                                 goto failure;
 751                         }
 752                 }
 753
 754                 se.resptype = MSM_CAM_RESP_CTRL;
 755
 756                 /* what to control */
 757                 se.ctrl_cmd.type = ctrl->type;
 758                 se.ctrl_cmd.length = ctrl->length;
 759                 se.ctrl_cmd.resp_fd = ctrl->resp_fd;
 760                 break;
 761
 762         case MSM_CAM_Q_V4L2_REQ:
 763                 /* control command from v4l2 client */
 764                 ctrl = (struct msm_ctrl_cmd *)(qcmd->command);
 765
 766                 CDBG("msm_get_stats, qcmd->type = %d\n", qcmd->type);
 767                 CDBG("length = %d\n", ctrl->length);
 768
 769                 if (ctrl->length > 0) {
 770                         if (copy_to_user((void *)(se.ctrl_cmd.value),
 771                                         ctrl->value, ctrl->length)) {
 772                                 ERR_COPY_TO_USER();
 773                                 rc = -EFAULT;
 774                                 goto failure;
 775                         }
 776                 }
 777
 778                 /* 2 tells config thread this is v4l2 request */
 779                 se.resptype = MSM_CAM_RESP_V4L2;
 780
 781                 /* what to control */
 782                 se.ctrl_cmd.type   = ctrl->type;
 783                 se.ctrl_cmd.length = ctrl->length;
 784                 break;
 785
 786         default:
 787                 rc = -EFAULT;
 788                 goto failure;
 789         } /* switch qcmd->type */
 790
 791         if (copy_to_user((void *)arg, &se, sizeof(se))) {
 792                 ERR_COPY_TO_USER();
 793                 rc = -EFAULT;
 794         }
 795
 796 failure:
 797         kfree(qcmd);
 798
 799         CDBG("msm_get_stats: %d\n", rc);
 800         return rc;
 801 }
 802
 803 static int msm_ctrl_cmd_done(struct msm_control_device *ctrl_pmsm,
 804                 void __user *arg)
 805 {
 806         unsigned long flags;
 807         int rc = 0;
 808
 809         struct msm_ctrl_cmd udata, *ctrlcmd;
 810         struct msm_queue_cmd *qcmd = NULL;
 811
 812         if (copy_from_user(&udata, arg, sizeof(struct msm_ctrl_cmd))) {
 813                 ERR_COPY_FROM_USER();
 814                 rc = -EFAULT;
 815                 goto end;
 816         }
 817
 818         qcmd = kmalloc(sizeof(struct msm_queue_cmd) +
 819                         sizeof(struct msm_ctrl_cmd) + udata.length,
 820                         GFP_KERNEL);
 821         if (!qcmd) {
 822                 rc = -ENOMEM;
 823                 goto end;
 824         }
 825
 826         qcmd->command = ctrlcmd = (struct msm_ctrl_cmd *)(qcmd + 1);
 827         *ctrlcmd = udata;
 828         if (udata.length > 0) {
 829                 ctrlcmd->value = ctrlcmd + 1;
 830                 if (copy_from_user(ctrlcmd->value,
 831                                         (void *)udata.value,
 832                                         udata.length)) {
 833                         ERR_COPY_FROM_USER();
 834                         rc = -EFAULT;
 835                         kfree(qcmd);
 836                         goto end;
 837                 }
 838         } else
 839                 ctrlcmd->value = NULL;
 840
 841 end:
 842         CDBG("msm_ctrl_cmd_done: end rc = %d\n", rc);
 843         if (rc == 0) {
 844                 /* wake up control thread */
 845                 spin_lock_irqsave(&ctrl_pmsm->ctrl_q.ctrl_status_q_lock, flags);
 846                 list_add_tail(&qcmd->list, &ctrl_pmsm->ctrl_q.ctrl_status_q);
 847                 wake_up(&ctrl_pmsm->ctrl_q.ctrl_status_wait);
 848                 spin_unlock_irqrestore(&ctrl_pmsm->ctrl_q.ctrl_status_q_lock, flags);
 849         }
 850
 851         return rc;
 852 }
 853
 854 static int msm_config_vfe(struct msm_sync *sync, void __user *arg)
 855 {
 856         struct msm_vfe_cfg_cmd cfgcmd;
 857         struct msm_pmem_region region[8];
 858         struct axidata axi_data;
 859         void *data = NULL;
 860         int rc = -EIO;
 861
 862         memset(&axi_data, 0, sizeof(axi_data));
 863
 864         if (copy_from_user(&cfgcmd, arg, sizeof(cfgcmd))) {
 865                 ERR_COPY_FROM_USER();
 866                 return -EFAULT;
 867         }
 868
 869         switch (cfgcmd.cmd_type) {
 870         case CMD_STATS_ENABLE:
 871                 axi_data.bufnum1 =
 872                         msm_pmem_region_lookup(&sync->stats,
 873                                         MSM_PMEM_AEC_AWB, &region[0],
 874                                         NUM_WB_EXP_STAT_OUTPUT_BUFFERS);
 875                 if (!axi_data.bufnum1) {
 876                         pr_err("%s: pmem region lookup error\n", __func__);
 877                         return -EINVAL;
 878                 }
 879                 axi_data.region = &region[0];
 880                 data = &axi_data;
 881                 break;
 882         case CMD_STATS_AF_ENABLE:
 883                 axi_data.bufnum1 =
 884                         msm_pmem_region_lookup(&sync->stats,
 885                                         MSM_PMEM_AF, &region[0],
 886                                         NUM_AF_STAT_OUTPUT_BUFFERS);
 887                 if (!axi_data.bufnum1) {
 888                         pr_err("%s: pmem region lookup error\n", __func__);
 889                         return -EINVAL;
 890                 }
 891                 axi_data.region = &region[0];
 892                 data = &axi_data;
 893                 break;
 894         case CMD_GENERAL:
 895         case CMD_STATS_DISABLE:
 896                 break;
 897         default:
 898                 pr_err("%s: unknown command type %d\n",
 899                         __func__, cfgcmd.cmd_type);
 900                 return -EINVAL;
 901         }
 902
 903
 904         if (sync->vfefn.vfe_config)
 905                 rc = sync->vfefn.vfe_config(&cfgcmd, data);
 906
 907         return rc;
 908 }
 909
 910 static int msm_frame_axi_cfg(struct msm_sync *sync,
 911                 struct msm_vfe_cfg_cmd *cfgcmd)
 912 {
 913         int rc = -EIO;
 914         struct axidata axi_data;
 915         void *data = &axi_data;
 916         struct msm_pmem_region region[8];
 917         int pmem_type;
 918
 919         memset(&axi_data, 0, sizeof(axi_data));
 920
 921         switch (cfgcmd->cmd_type) {
 922         case CMD_AXI_CFG_OUT1:
 923                 pmem_type = MSM_PMEM_OUTPUT1;
 924                 axi_data.bufnum1 =
 925                         msm_pmem_region_lookup(&sync->frame, pmem_type,
 926                                 &region[0], 8);
 927                 if (!axi_data.bufnum1) {
 928                         pr_err("%s: pmem region lookup error\n", __func__);
 929                         return -EINVAL;
 930                 }
 931                 break;
 932
 933         case CMD_AXI_CFG_OUT2:
 934                 pmem_type = MSM_PMEM_OUTPUT2;
 935                 axi_data.bufnum2 =
 936                         msm_pmem_region_lookup(&sync->frame, pmem_type,
 937                                 &region[0], 8);
 938                 if (!axi_data.bufnum2) {
 939                         pr_err("%s: pmem region lookup error\n", __func__);
 940                         return -EINVAL;
 941                 }
 942                 break;
 943
 944         case CMD_AXI_CFG_SNAP_O1_AND_O2:
 945                 pmem_type = MSM_PMEM_THUMBAIL;
 946                 axi_data.bufnum1 =
 947                         msm_pmem_region_lookup(&sync->frame, pmem_type,
 948                                 &region[0], 8);
 949                 if (!axi_data.bufnum1) {
 950                         pr_err("%s: pmem region lookup error\n", __func__);
 951                         return -EINVAL;
 952                 }
 953
 954                 pmem_type = MSM_PMEM_MAINIMG;
 955                 axi_data.bufnum2 =
 956                         msm_pmem_region_lookup(&sync->frame, pmem_type,
 957                                 &region[axi_data.bufnum1], 8);
 958                 if (!axi_data.bufnum2) {
 959                         pr_err("%s: pmem region lookup error\n", __func__);
 960                         return -EINVAL;
 961                 }
 962                 break;
 963
 964         case CMD_RAW_PICT_AXI_CFG:
 965                 pmem_type = MSM_PMEM_RAW_MAINIMG;
 966                 axi_data.bufnum2 =
 967                         msm_pmem_region_lookup(&sync->frame, pmem_type,
 968                                 &region[0], 8);
 969                 if (!axi_data.bufnum2) {
 970                         pr_err("%s: pmem region lookup error\n", __func__);
 971                         return -EINVAL;
 972                 }
 973                 break;
 974
 975         case CMD_GENERAL:
 976                 data = NULL;
 977                 break;
 978
 979         default:
 980                 pr_err("%s: unknown command type %d\n",
 981                         __func__, cfgcmd->cmd_type);
 982                 return -EINVAL;
 983         }
 984
 985         axi_data.region = &region[0];
 986
 987         /* send the AXI configuration command to driver */
 988         if (sync->vfefn.vfe_config)
 989                 rc = sync->vfefn.vfe_config(cfgcmd, data);
 990
 991         return rc;
 992 }
 993
 994 static int msm_get_sensor_info(struct msm_sync *sync, void __user *arg)
 995 {
 996         int rc = 0;
 997         struct msm_camsensor_info info;
 998         struct msm_camera_sensor_info *sdata;
 999
1000         if (copy_from_user(&info,
1001                         arg,
1002                         sizeof(struct msm_camsensor_info))) {
1003                 ERR_COPY_FROM_USER();
1004                 return -EFAULT;
1005         }
1006
1007         sdata = sync->pdev->dev.platform_data;
1008         CDBG("sensor_name %s\n", sdata->sensor_name);
1009
1010         memcpy(&info.name[0],
1011                 sdata->sensor_name,
1012                 MAX_SENSOR_NAME);
1013         info.flash_enabled = sdata->flash_type != MSM_CAMERA_FLASH_NONE;
1014
1015         /* copy back to user space */
1016         if (copy_to_user((void *)arg,
1017                         &info,
1018                         sizeof(struct msm_camsensor_info))) {
1019                 ERR_COPY_TO_USER();
1020                 rc = -EFAULT;
1021         }
1022
1023         return rc;
1024 }
1025
1026 static int __msm_put_frame_buf(struct msm_sync *sync,
1027                 struct msm_frame *pb)
1028 {
1029         unsigned long pphy;
1030         struct msm_vfe_cfg_cmd cfgcmd;
1031
1032         int rc = -EIO;
1033
1034         pphy = msm_pmem_frame_vtop_lookup(sync,
1035                 pb->buffer,
1036                 pb->y_off, pb->cbcr_off, pb->fd);
1037
1038         if (pphy != 0) {
1039                 CDBG("rel: vaddr = 0x%lx, paddr = 0x%lx\n",
1040                         pb->buffer, pphy);
1041                 cfgcmd.cmd_type = CMD_FRAME_BUF_RELEASE;
1042                 cfgcmd.value    = (void *)pb;
1043                 if (sync->vfefn.vfe_config)
1044                         rc = sync->vfefn.vfe_config(&cfgcmd, &pphy);
1045         } else {
1046                 pr_err("%s: msm_pmem_frame_vtop_lookup failed\n",
1047                         __func__);
1048                 rc = -EINVAL;
1049         }
1050
1051         return rc;
1052 }
1053
1054 static int msm_put_frame_buffer(struct msm_sync *sync, void __user *arg)
1055 {
1056         struct msm_frame buf_t;
1057
1058         if (copy_from_user(&buf_t,
1059                                 arg,
1060                                 sizeof(struct msm_frame))) {
1061                 ERR_COPY_FROM_USER();
1062                 return -EFAULT;
1063         }
1064
1065         return __msm_put_frame_buf(sync, &buf_t);
1066 }
1067
1068 static int __msm_register_pmem(struct msm_sync *sync,
1069                 struct msm_pmem_info *pinfo)
1070 {
1071         int rc = 0;
1072
1073         switch (pinfo->type) {
1074         case MSM_PMEM_OUTPUT1:
1075         case MSM_PMEM_OUTPUT2:
1076         case MSM_PMEM_THUMBAIL:
1077         case MSM_PMEM_MAINIMG:
1078         case MSM_PMEM_RAW_MAINIMG:
1079                 rc = msm_pmem_table_add(&sync->frame, pinfo);
1080                 break;
1081
1082         case MSM_PMEM_AEC_AWB:
1083         case MSM_PMEM_AF:
1084                 rc = msm_pmem_table_add(&sync->stats, pinfo);
1085                 break;
1086
1087         default:
1088                 rc = -EINVAL;
1089                 break;
1090         }
1091
1092         return rc;
1093 }
1094
1095 static int msm_register_pmem(struct msm_sync *sync, void __user *arg)
1096 {
1097         struct msm_pmem_info info;
1098
1099         if (copy_from_user(&info, arg, sizeof(info))) {
1100                 ERR_COPY_FROM_USER();
1101                 return -EFAULT;
1102         }
1103
1104         return __msm_register_pmem(sync, &info);
1105 }
1106
1107 static int msm_stats_axi_cfg(struct msm_sync *sync,
1108                 struct msm_vfe_cfg_cmd *cfgcmd)
1109 {
1110         int rc = -EIO;
1111         struct axidata axi_data;
1112         void *data = &axi_data;
1113
1114         struct msm_pmem_region region[3];
1115         int pmem_type = MSM_PMEM_MAX;
1116
1117         memset(&axi_data, 0, sizeof(axi_data));
1118
1119         switch (cfgcmd->cmd_type) {
1120         case CMD_STATS_AXI_CFG:
1121                 pmem_type = MSM_PMEM_AEC_AWB;
1122                 break;
1123         case CMD_STATS_AF_AXI_CFG:
1124                 pmem_type = MSM_PMEM_AF;
1125                 break;
1126         case CMD_GENERAL:
1127                 data = NULL;
1128                 break;
1129         default:
1130                 pr_err("%s: unknown command type %d\n",
1131                         __func__, cfgcmd->cmd_type);
1132                 return -EINVAL;
1133         }
1134
1135         if (cfgcmd->cmd_type != CMD_GENERAL) {
1136                 axi_data.bufnum1 =
1137                         msm_pmem_region_lookup(&sync->stats, pmem_type,
1138                                 &region[0], NUM_WB_EXP_STAT_OUTPUT_BUFFERS);
1139                 if (!axi_data.bufnum1) {
1140                         pr_err("%s: pmem region lookup error\n", __func__);
1141                         return -EINVAL;
1142                 }
1143                 axi_data.region = &region[0];
1144         }
1145
1146         /* send the AEC/AWB STATS configuration command to driver */
1147         if (sync->vfefn.vfe_config)
1148                 rc = sync->vfefn.vfe_config(cfgcmd, &axi_data);
1149
1150         return rc;
1151 }
1152
1153 static int msm_put_stats_buffer(struct msm_sync *sync, void __user *arg)
1154 {
1155         int rc = -EIO;
1156
1157         struct msm_stats_buf buf;
1158         unsigned long pphy;
1159         struct msm_vfe_cfg_cmd cfgcmd;
1160
1161         if (copy_from_user(&buf, arg,
1162                                 sizeof(struct msm_stats_buf))) {
1163                 ERR_COPY_FROM_USER();
1164                 return -EFAULT;
1165         }
1166
1167         CDBG("msm_put_stats_buffer\n");
1168         pphy = msm_pmem_stats_vtop_lookup(sync, buf.buffer, buf.fd);
1169
1170         if (pphy != 0) {
1171                 if (buf.type == STAT_AEAW)
1172                         cfgcmd.cmd_type = CMD_STATS_BUF_RELEASE;
1173                 else if (buf.type == STAT_AF)
1174                         cfgcmd.cmd_type = CMD_STATS_AF_BUF_RELEASE;
1175                 else {
1176                         pr_err("%s: invalid buf type %d\n",
1177                                 __func__,
1178                                 buf.type);
1179                         rc = -EINVAL;
1180                         goto put_done;
1181                 }
1182
1183                 cfgcmd.value = (void *)&buf;
1184
1185                 if (sync->vfefn.vfe_config) {
1186                         rc = sync->vfefn.vfe_config(&cfgcmd, &pphy);
1187                         if (rc < 0)
1188                                 pr_err("msm_put_stats_buffer: "\
1189                                         "vfe_config err %d\n", rc);
1190                 } else
1191                         pr_err("msm_put_stats_buffer: vfe_config is NULL\n");
1192         } else {
1193                 pr_err("msm_put_stats_buffer: NULL physical address\n");
1194                 rc = -EINVAL;
1195         }
1196
1197 put_done:
1198         return rc;
1199 }
1200
1201 static int msm_axi_config(struct msm_sync *sync, void __user *arg)
1202 {
1203         struct msm_vfe_cfg_cmd cfgcmd;
1204
1205         if (copy_from_user(&cfgcmd, arg, sizeof(cfgcmd))) {
1206                 ERR_COPY_FROM_USER();
1207                 return -EFAULT;
1208         }
1209
1210         switch (cfgcmd.cmd_type) {
1211         case CMD_AXI_CFG_OUT1:
1212         case CMD_AXI_CFG_OUT2:
1213         case CMD_AXI_CFG_SNAP_O1_AND_O2:
1214         case CMD_RAW_PICT_AXI_CFG:
1215                 return msm_frame_axi_cfg(sync, &cfgcmd);
1216
1217         case CMD_STATS_AXI_CFG:
1218         case CMD_STATS_AF_AXI_CFG:
1219                 return msm_stats_axi_cfg(sync, &cfgcmd);
1220
1221         default:
1222                 pr_err("%s: unknown command type %d\n",
1223                         __func__,
1224                         cfgcmd.cmd_type);
1225                 return -EINVAL;
1226         }
1227
1228         return 0;
1229 }
1230
1231 static int __msm_get_pic(struct msm_sync *sync, struct msm_ctrl_cmd *ctrl)
1232 {
1233         unsigned long flags;
1234         int rc = 0;
1235         int tm;
1236
1237         struct msm_queue_cmd *qcmd = NULL;
1238
1239         tm = (int)ctrl->timeout_ms;
1240
1241         rc = wait_event_interruptible_timeout(
1242                         sync->pict_frame_wait,
1243                         !list_empty_careful(&sync->pict_frame_q),
1244                         msecs_to_jiffies(tm));
1245         if (list_empty_careful(&sync->pict_frame_q)) {
1246                 if (rc == 0)
1247                         return -ETIMEDOUT;
1248                 if (rc < 0) {
1249                         pr_err("msm_camera_get_picture, rc = %d\n", rc);
1250                         return rc;
1251                 }
1252         }
1253
1254         spin_lock_irqsave(&sync->pict_frame_q_lock, flags);
1255         BUG_ON(list_empty(&sync->pict_frame_q));
1256         qcmd = list_first_entry(&sync->pict_frame_q,
1257                         struct msm_queue_cmd, list);
1258         list_del_init(&qcmd->list);
1259         spin_unlock_irqrestore(&sync->pict_frame_q_lock, flags);
1260
1261         if (qcmd->command != NULL) {
1262                 struct msm_ctrl_cmd *q =
1263                         (struct msm_ctrl_cmd *)qcmd->command;
1264                 ctrl->type = q->type;
1265                 ctrl->status = q->status;
1266         } else {
1267                 ctrl->type = -1;
1268                 ctrl->status = -1;
1269         }
1270
1271         kfree(qcmd);
1272         return rc;
1273 }
1274
1275 static int msm_get_pic(struct msm_sync *sync, void __user *arg)
1276 {
1277         struct msm_ctrl_cmd ctrlcmd_t;
1278         int rc;
1279
1280         if (copy_from_user(&ctrlcmd_t,
1281                                 arg,
1282                                 sizeof(struct msm_ctrl_cmd))) {
1283                 ERR_COPY_FROM_USER();
1284                 return -EFAULT;
1285         }
1286
1287         rc = __msm_get_pic(sync, &ctrlcmd_t);
1288         if (rc < 0)
1289                 return rc;
1290
1291         if (sync->croplen) {
1292                 if (ctrlcmd_t.length < sync->croplen) {
1293                         pr_err("msm_get_pic: invalid len %d\n",
1294                                 ctrlcmd_t.length);
1295                         return -EINVAL;
1296                 }
1297                 if (copy_to_user(ctrlcmd_t.value,
1298                                 sync->cropinfo,
1299                                 sync->croplen)) {
1300                         ERR_COPY_TO_USER();
1301                         return -EFAULT;
1302                 }
1303         }
1304
1305         if (copy_to_user((void *)arg,
1306                 &ctrlcmd_t,
1307                 sizeof(struct msm_ctrl_cmd))) {
1308                 ERR_COPY_TO_USER();
1309                 return -EFAULT;
1310         }
1311         return 0;
1312 }
1313
1314 static int msm_set_crop(struct msm_sync *sync, void __user *arg)
1315 {
1316         struct crop_info crop;
1317
1318         if (copy_from_user(&crop,
1319                                 arg,
1320                                 sizeof(struct crop_info))) {
1321                 ERR_COPY_FROM_USER();
1322                 return -EFAULT;
1323         }
1324
1325         if (!sync->croplen) {
1326                 sync->cropinfo = kmalloc(crop.len, GFP_KERNEL);
1327                 if (!sync->cropinfo)
1328                         return -ENOMEM;
1329         } else if (sync->croplen < crop.len)
1330                 return -EINVAL;
1331
1332         if (copy_from_user(sync->cropinfo,
1333                                 crop.info,
1334                                 crop.len)) {
1335                 ERR_COPY_FROM_USER();
1336                 kfree(sync->cropinfo);
1337                 return -EFAULT;
1338         }
1339
1340         sync->croplen = crop.len;
1341
1342         return 0;
1343 }
1344
1345 static int msm_pict_pp_done(struct msm_sync *sync, void __user *arg)
1346 {
1347         struct msm_ctrl_cmd udata;
1348         struct msm_ctrl_cmd *ctrlcmd = NULL;
1349         struct msm_queue_cmd *qcmd = NULL;
1350         unsigned long flags;
1351         int rc = 0;
1352
1353         if (!sync->pict_pp)
1354                 return -EINVAL;
1355
1356         if (copy_from_user(&udata, arg, sizeof(struct msm_ctrl_cmd))) {
1357                 ERR_COPY_FROM_USER();
1358                 rc = -EFAULT;
1359                 goto pp_fail;
1360         }
1361
1362         qcmd = kmalloc(sizeof(struct msm_queue_cmd) +
1363                         sizeof(struct msm_ctrl_cmd),
1364                         GFP_KERNEL);
1365         if (!qcmd) {
1366                 rc = -ENOMEM;
1367                 goto pp_fail;
1368         }
1369
1370         qcmd->type = MSM_CAM_Q_VFE_MSG;
1371         qcmd->command = ctrlcmd = (struct msm_ctrl_cmd *)(qcmd + 1);
1372         memset(ctrlcmd, 0, sizeof(struct msm_ctrl_cmd));
1373         ctrlcmd->type = udata.type;
1374         ctrlcmd->status = udata.status;
1375
1376         spin_lock_irqsave(&sync->pict_frame_q_lock, flags);
1377         list_add_tail(&qcmd->list, &sync->pict_frame_q);
1378         spin_unlock_irqrestore(&sync->pict_frame_q_lock, flags);
1379         wake_up(&sync->pict_frame_wait);
1380
1381 pp_fail:
1382         return rc;
1383 }
1384
1385 static long msm_ioctl_common(struct msm_device *pmsm,
1386                 unsigned int cmd,
1387                 void __user *argp)
1388 {
1389         CDBG("msm_ioctl_common\n");
1390         switch (cmd) {
1391         case MSM_CAM_IOCTL_REGISTER_PMEM:
1392                 return msm_register_pmem(pmsm->sync, argp);
1393         case MSM_CAM_IOCTL_UNREGISTER_PMEM:
1394                 return msm_pmem_table_del(pmsm->sync, argp);
1395         default:
1396                 return -EINVAL;
1397         }
1398 }
1399
1400 static long msm_ioctl_config(struct file *filep, unsigned int cmd,
1401         unsigned long arg)
1402 {
1403         int rc = -EINVAL;
1404         void __user *argp = (void __user *)arg;
1405         struct msm_device *pmsm = filep->private_data;
1406
1407         CDBG("msm_ioctl_config cmd = %d\n", _IOC_NR(cmd));
1408
1409         switch (cmd) {
1410         case MSM_CAM_IOCTL_GET_SENSOR_INFO:
1411                 rc = msm_get_sensor_info(pmsm->sync, argp);
1412                 break;
1413
1414         case MSM_CAM_IOCTL_CONFIG_VFE:
1415                 /* Coming from config thread for update */
1416                 rc = msm_config_vfe(pmsm->sync, argp);
1417                 break;
1418
1419         case MSM_CAM_IOCTL_GET_STATS:
1420                 /* Coming from config thread wait
1421                  * for vfe statistics and control requests */
1422                 rc = msm_get_stats(pmsm->sync, argp);
1423                 break;
1424
1425         case MSM_CAM_IOCTL_ENABLE_VFE:
1426                 /* This request comes from control thread:
1427                  * enable either QCAMTASK or VFETASK */
1428                 rc = msm_enable_vfe(pmsm->sync, argp);
1429                 break;
1430
1431         case MSM_CAM_IOCTL_DISABLE_VFE:
1432                 /* This request comes from control thread:
1433                  * disable either QCAMTASK or VFETASK */
1434                 rc = msm_disable_vfe(pmsm->sync, argp);
1435                 break;
1436
1437         case MSM_CAM_IOCTL_VFE_APPS_RESET:
1438                 msm_camio_vfe_blk_reset();
1439                 rc = 0;
1440                 break;
1441
1442         case MSM_CAM_IOCTL_RELEASE_STATS_BUFFER:
1443                 rc = msm_put_stats_buffer(pmsm->sync, argp);
1444                 break;
1445
1446         case MSM_CAM_IOCTL_AXI_CONFIG:
1447                 rc = msm_axi_config(pmsm->sync, argp);
1448                 break;
1449
1450         case MSM_CAM_IOCTL_SET_CROP:
1451                 rc = msm_set_crop(pmsm->sync, argp);
1452                 break;
1453
1454         case MSM_CAM_IOCTL_PICT_PP: {
1455                 uint8_t enable;
1456                 if (copy_from_user(&enable, argp, sizeof(enable))) {
1457                         ERR_COPY_FROM_USER();
1458                         rc = -EFAULT;
1459                 } else {
1460                         pmsm->sync->pict_pp = enable;
1461                         rc = 0;
1462                 }
1463                 break;
1464         }
1465
1466         case MSM_CAM_IOCTL_PICT_PP_DONE:
1467                 rc = msm_pict_pp_done(pmsm->sync, argp);
1468                 break;
1469
1470         case MSM_CAM_IOCTL_SENSOR_IO_CFG:
1471                 rc = pmsm->sync->sctrl.s_config(argp);
1472                 break;
1473
1474         case MSM_CAM_IOCTL_FLASH_LED_CFG: {
1475                 uint32_t led_state;
1476                 if (copy_from_user(&led_state, argp, sizeof(led_state))) {
1477                         ERR_COPY_FROM_USER();
1478                         rc = -EFAULT;
1479                 } else
1480                         rc = msm_camera_flash_set_led_state(led_state);
1481                 break;
1482         }
1483
1484         default:
1485                 rc = msm_ioctl_common(pmsm, cmd, argp);
1486                 break;
1487         }
1488
1489         CDBG("msm_ioctl_config cmd = %d DONE\n", _IOC_NR(cmd));
1490         return rc;
1491 }
1492
1493 static int msm_unblock_poll_frame(struct msm_sync *);
1494
1495 static long msm_ioctl_frame(struct file *filep, unsigned int cmd,
1496         unsigned long arg)
1497 {
1498         int rc = -EINVAL;
1499         void __user *argp = (void __user *)arg;
1500         struct msm_device *pmsm = filep->private_data;
1501
1502
1503         switch (cmd) {
1504         case MSM_CAM_IOCTL_GETFRAME:
1505                 /* Coming from frame thread to get frame
1506                  * after SELECT is done */
1507                 rc = msm_get_frame(pmsm->sync, argp);
1508                 break;
1509         case MSM_CAM_IOCTL_RELEASE_FRAME_BUFFER:
1510                 rc = msm_put_frame_buffer(pmsm->sync, argp);
1511                 break;
1512         case MSM_CAM_IOCTL_UNBLOCK_POLL_FRAME:
1513                 rc = msm_unblock_poll_frame(pmsm->sync);
1514                 break;
1515         default:
1516                 break;
1517         }
1518
1519         return rc;
1520 }
1521
1522
1523 static long msm_ioctl_control(struct file *filep, unsigned int cmd,
1524         unsigned long arg)
1525 {
1526         int rc = -EINVAL;
1527         void __user *argp = (void __user *)arg;
1528         struct msm_control_device *ctrl_pmsm = filep->private_data;
1529         struct msm_device *pmsm = ctrl_pmsm->pmsm;
1530
1531         switch (cmd) {
1532         case MSM_CAM_IOCTL_CTRL_COMMAND:
1533                 /* Coming from control thread, may need to wait for
1534                  * command status */
1535                 rc = msm_control(ctrl_pmsm, 1, argp);
1536                 break;
1537         case MSM_CAM_IOCTL_CTRL_COMMAND_2:
1538                 /* Sends a message, returns immediately */
1539                 rc = msm_control(ctrl_pmsm, 0, argp);
1540                 break;
1541         case MSM_CAM_IOCTL_CTRL_CMD_DONE:
1542                 /* Config thread calls the control thread to notify it
1543                  * of the result of a MSM_CAM_IOCTL_CTRL_COMMAND.
1544                  */
1545                 rc = msm_ctrl_cmd_done(ctrl_pmsm, argp);
1546                 break;
1547         case MSM_CAM_IOCTL_GET_PICTURE:
1548                 rc = msm_get_pic(pmsm->sync, argp);
1549                 break;
1550         default:
1551                 rc = msm_ioctl_common(pmsm, cmd, argp);
1552                 break;
1553         }
1554
1555         return rc;
1556 }
1557
1558 static int __msm_release(struct msm_sync *sync)
1559 {
1560         struct msm_pmem_region *region;
1561         struct hlist_node *hnode;
1562         struct hlist_node *n;
1563
1564         mutex_lock(&sync->lock);
1565         if (sync->opencnt)
1566                 sync->opencnt--;
1567
1568         if (!sync->opencnt) {
1569                 /* need to clean up system resource */
1570                 if (sync->vfefn.vfe_release)
1571                         sync->vfefn.vfe_release(sync->pdev);
1572
1573                 if (sync->cropinfo) {
1574                         kfree(sync->cropinfo);
1575                         sync->cropinfo = NULL;
1576                         sync->croplen = 0;
1577                 }
1578
1579                 hlist_for_each_entry_safe(region, hnode, n,
1580                                 &sync->frame, list) {
1581                         hlist_del(hnode);
1582                         put_pmem_file(region->file);
1583                         kfree(region);
1584                 }
1585
1586                 hlist_for_each_entry_safe(region, hnode, n,
1587                                 &sync->stats, list) {
1588                         hlist_del(hnode);
1589                         put_pmem_file(region->file);
1590                         kfree(region);
1591                 }
1592
1593                 MSM_DRAIN_QUEUE(sync, msg_event_q);
1594                 MSM_DRAIN_QUEUE(sync, prev_frame_q);
1595                 MSM_DRAIN_QUEUE(sync, pict_frame_q);
1596
1597                 sync->sctrl.s_release();
1598
1599                 sync->apps_id = NULL;
1600                 CDBG("msm_release completed!\n");
1601         }
1602         mutex_unlock(&sync->lock);
1603
1604         return 0;
1605 }
1606
1607 static int msm_release_config(struct inode *node, struct file *filep)
1608 {
1609         int rc;
1610         struct msm_device *pmsm = filep->private_data;
1611         printk("msm_camera: RELEASE %s\n", filep->f_path.dentry->d_name.name);
1612         rc = __msm_release(pmsm->sync);
1613         atomic_set(&pmsm->opened, 0);
1614         return rc;
1615 }
1616
1617 static int msm_release_control(struct inode *node, struct file *filep)
1618 {
1619         int rc;
1620         struct msm_control_device *ctrl_pmsm = filep->private_data;
1621         struct msm_device *pmsm = ctrl_pmsm->pmsm;
1622         printk(KERN_INFO "msm_camera: RELEASE %s\n",
1623                                         filep->f_path.dentry->d_name.name);
1624         rc = __msm_release(pmsm->sync);
1625         if (!rc) {
1626                 MSM_DRAIN_QUEUE(&ctrl_pmsm->ctrl_q, ctrl_status_q);
1627                 MSM_DRAIN_QUEUE(pmsm->sync, pict_frame_q);
1628         }
1629         kfree(ctrl_pmsm);
1630         return rc;
1631 }
1632
1633 static int msm_release_frame(struct inode *node, struct file *filep)
1634 {
1635         int rc;
1636         struct msm_device *pmsm = filep->private_data;
1637         printk(KERN_INFO "msm_camera: RELEASE %s\n",
1638                                         filep->f_path.dentry->d_name.name);
1639         rc = __msm_release(pmsm->sync);
1640         if (!rc) {
1641                 MSM_DRAIN_QUEUE(pmsm->sync, prev_frame_q);
1642                 atomic_set(&pmsm->opened, 0);
1643         }
1644         return rc;
1645 }
1646
1647 static int msm_unblock_poll_frame(struct msm_sync *sync)
1648 {
1649         unsigned long flags;
1650         CDBG("msm_unblock_poll_frame\n");
1651         spin_lock_irqsave(&sync->prev_frame_q_lock, flags);
1652         sync->unblock_poll_frame = 1;
1653         wake_up(&sync->prev_frame_wait);
1654         spin_unlock_irqrestore(&sync->prev_frame_q_lock, flags);
1655         return 0;
1656 }
1657
1658 static unsigned int __msm_poll_frame(struct msm_sync *sync,
1659                 struct file *filep,
1660                 struct poll_table_struct *pll_table)
1661 {
1662         int rc = 0;
1663         unsigned long flags;
1664
1665         poll_wait(filep, &sync->prev_frame_wait, pll_table);
1666
1667         spin_lock_irqsave(&sync->prev_frame_q_lock, flags);
1668         if (!list_empty_careful(&sync->prev_frame_q))
1669                 /* frame ready */
1670                 rc = POLLIN | POLLRDNORM;
1671         if (sync->unblock_poll_frame) {
1672                 CDBG("%s: sync->unblock_poll_frame is true\n", __func__);
1673                 rc |= POLLPRI;
1674                 sync->unblock_poll_frame = 0;
1675         }
1676         spin_unlock_irqrestore(&sync->prev_frame_q_lock, flags);
1677
1678         return rc;
1679 }
1680
1681 static unsigned int msm_poll_frame(struct file *filep,
1682         struct poll_table_struct *pll_table)
1683 {
1684         struct msm_device *pmsm = filep->private_data;
1685         return __msm_poll_frame(pmsm->sync, filep, pll_table);
1686 }
1687
1688 /*
1689  * This function executes in interrupt context.
1690  */
1691
1692 static void *msm_vfe_sync_alloc(int size,
1693                         void *syncdata __attribute__((unused)))
1694 {
1695         struct msm_queue_cmd *qcmd =
1696                 kmalloc(sizeof(struct msm_queue_cmd) + size, GFP_ATOMIC);
1697         return qcmd ? qcmd + 1 : NULL;
1698 }
1699
1700 /*
1701  * This function executes in interrupt context.
1702  */
1703
1704 static void msm_vfe_sync(struct msm_vfe_resp *vdata,
1705                 enum msm_queue qtype, void *syncdata)
1706 {
1707         struct msm_queue_cmd *qcmd = NULL;
1708         struct msm_queue_cmd *qcmd_frame = NULL;
1709         struct msm_vfe_phy_info *fphy;
1710
1711         unsigned long flags;
1712         struct msm_sync *sync = (struct msm_sync *)syncdata;
1713         if (!sync) {
1714                 pr_err("msm_camera: no context in dsp callback.\n");
1715                 return;
1716         }
1717
1718         qcmd = ((struct msm_queue_cmd *)vdata) - 1;
1719         qcmd->type = qtype;
1720
1721         if (qtype == MSM_CAM_Q_VFE_MSG) {
1722                 switch (vdata->type) {
1723                 case VFE_MSG_OUTPUT1:
1724                 case VFE_MSG_OUTPUT2:
1725                         qcmd_frame =
1726                                 kmalloc(sizeof(struct msm_queue_cmd) +
1727                                         sizeof(struct msm_vfe_phy_info),
1728                                         GFP_ATOMIC);
1729                         if (!qcmd_frame)
1730                                 goto mem_fail;
1731                         fphy = (struct msm_vfe_phy_info *)(qcmd_frame + 1);
1732                         *fphy = vdata->phy;
1733
1734                         qcmd_frame->type = MSM_CAM_Q_VFE_MSG;
1735                         qcmd_frame->command = fphy;
1736
1737                         CDBG("qcmd_frame= 0x%x phy_y= 0x%x, phy_cbcr= 0x%x\n",
1738                                 (int) qcmd_frame, fphy->y_phy, fphy->cbcr_phy);
1739
1740                         spin_lock_irqsave(&sync->prev_frame_q_lock, flags);
1741                         list_add_tail(&qcmd_frame->list, &sync->prev_frame_q);
1742                         wake_up(&sync->prev_frame_wait);
1743                         spin_unlock_irqrestore(&sync->prev_frame_q_lock, flags);
1744                         CDBG("woke up frame thread\n");
1745                         break;
1746                 case VFE_MSG_SNAPSHOT:
1747                         if (sync->pict_pp)
1748                                 break;
1749
1750                         CDBG("snapshot pp = %d\n", sync->pict_pp);
1751                         qcmd_frame =
1752                                 kmalloc(sizeof(struct msm_queue_cmd),
1753                                         GFP_ATOMIC);
1754                         if (!qcmd_frame)
1755                                 goto mem_fail;
1756                         qcmd_frame->type = MSM_CAM_Q_VFE_MSG;
1757                         qcmd_frame->command = NULL;
1758                                 spin_lock_irqsave(&sync->pict_frame_q_lock,
1759                                 flags);
1760                         list_add_tail(&qcmd_frame->list, &sync->pict_frame_q);
1761                         wake_up(&sync->pict_frame_wait);
1762                         spin_unlock_irqrestore(&sync->pict_frame_q_lock, flags);
1763                         CDBG("woke up picture thread\n");
1764                         break;
1765                 default:
1766                         CDBG("%s: qtype = %d not handled\n",
1767                                 __func__, vdata->type);
1768                         break;
1769                 }
1770         }
1771
1772         qcmd->command = (void *)vdata;
1773         CDBG("vdata->type = %d\n", vdata->type);
1774
1775         spin_lock_irqsave(&sync->msg_event_q_lock, flags);
1776         list_add_tail(&qcmd->list, &sync->msg_event_q);
1777         wake_up(&sync->msg_event_wait);
1778         spin_unlock_irqrestore(&sync->msg_event_q_lock, flags);
1779         CDBG("woke up config thread\n");
1780         return;
1781
1782 mem_fail:
1783         kfree(qcmd);
1784 }
1785
1786 static struct msm_vfe_callback msm_vfe_s = {
1787         .vfe_resp = msm_vfe_sync,
1788         .vfe_alloc = msm_vfe_sync_alloc,
1789 };
1790
1791 static int __msm_open(struct msm_sync *sync, const char *const apps_id)
1792 {
1793         int rc = 0;
1794
1795         mutex_lock(&sync->lock);
1796         if (sync->apps_id && strcmp(sync->apps_id, apps_id)) {
1797                 pr_err("msm_camera(%s): sensor %s is already opened for %s\n",
1798                         apps_id,
1799                         sync->sdata->sensor_name,
1800                         sync->apps_id);
1801                 rc = -EBUSY;
1802                 goto msm_open_done;
1803         }
1804
1805         sync->apps_id = apps_id;
1806
1807         if (!sync->opencnt) {
1808
1809                 msm_camvfe_fn_init(&sync->vfefn, sync);
1810                 if (sync->vfefn.vfe_init) {
1811                         rc = sync->vfefn.vfe_init(&msm_vfe_s,
1812                                 sync->pdev);
1813                         if (rc < 0) {
1814                                 pr_err("vfe_init failed at %d\n", rc);
1815                                 goto msm_open_done;
1816                         }
1817                         rc = sync->sctrl.s_init(sync->sdata);
1818                         if (rc < 0) {
1819                                 pr_err("sensor init failed: %d\n", rc);
1820                                 goto msm_open_done;
1821                         }
1822                 } else {
1823                         pr_err("no sensor init func\n");
1824                         rc = -ENODEV;
1825                         goto msm_open_done;
1826                 }
1827
1828                 if (rc >= 0) {
1829                         INIT_HLIST_HEAD(&sync->frame);
1830                         INIT_HLIST_HEAD(&sync->stats);
1831                         sync->unblock_poll_frame = 0;
1832                 }
1833         }
1834         sync->opencnt++;
1835
1836 msm_open_done:
1837         mutex_unlock(&sync->lock);
1838         return rc;
1839 }
1840
1841 static int msm_open_common(struct inode *inode, struct file *filep,
1842                            int once)
1843 {
1844         int rc;
1845         struct msm_device *pmsm =
1846                 container_of(inode->i_cdev, struct msm_device, cdev);
1847
1848         CDBG("msm_camera: open %s\n", filep->f_path.dentry->d_name.name);
1849
1850         if (atomic_cmpxchg(&pmsm->opened, 0, 1) && once) {
1851                 pr_err("msm_camera: %s is already opened.\n",
1852                         filep->f_path.dentry->d_name.name);
1853                 return -EBUSY;
1854         }
1855
1856         rc = nonseekable_open(inode, filep);
1857         if (rc < 0) {
1858                 pr_err("msm_open: nonseekable_open error %d\n", rc);
1859                 return rc;
1860         }
1861
1862         rc = __msm_open(pmsm->sync, MSM_APPS_ID_PROP);
1863         if (rc < 0)
1864                 return rc;
1865
1866         filep->private_data = pmsm;
1867
1868         CDBG("msm_open() open: rc = %d\n", rc);
1869         return rc;
1870 }
1871
1872 static int msm_open(struct inode *inode, struct file *filep)
1873 {
1874         return msm_open_common(inode, filep, 1);
1875 }
1876
1877 static int msm_open_control(struct inode *inode, struct file *filep)
1878 {
1879         int rc;
1880
1881         struct msm_control_device *ctrl_pmsm =
1882                 kmalloc(sizeof(struct msm_control_device), GFP_KERNEL);
1883         if (!ctrl_pmsm)
1884                 return -ENOMEM;
1885
1886         rc = msm_open_common(inode, filep, 0);
1887         if (rc < 0) {
1888                 kfree(ctrl_pmsm);
1889                 return rc;
1890         }
1891
1892         ctrl_pmsm->pmsm = filep->private_data;
1893         filep->private_data = ctrl_pmsm;
1894         spin_lock_init(&ctrl_pmsm->ctrl_q.ctrl_status_q_lock);
1895         INIT_LIST_HEAD(&ctrl_pmsm->ctrl_q.ctrl_status_q);
1896         init_waitqueue_head(&ctrl_pmsm->ctrl_q.ctrl_status_wait);
1897
1898         CDBG("msm_open() open: rc = %d\n", rc);
1899         return rc;
1900 }
1901
1902 static int __msm_v4l2_control(struct msm_sync *sync,
1903                 struct msm_ctrl_cmd *out)
1904 {
1905         int rc = 0;
1906
1907         struct msm_queue_cmd *qcmd = NULL, *rcmd = NULL;
1908         struct msm_ctrl_cmd *ctrl;
1909         struct msm_control_device_queue FIXME;
1910
1911         /* wake up config thread, 4 is for V4L2 application */
1912         qcmd = kmalloc(sizeof(struct msm_queue_cmd), GFP_KERNEL);
1913         if (!qcmd) {
1914                 pr_err("msm_control: cannot allocate buffer\n");
1915                 rc = -ENOMEM;
1916                 goto end;
1917         }
1918         qcmd->type = MSM_CAM_Q_V4L2_REQ;
1919         qcmd->command = out;
1920
1921         rcmd = __msm_control(sync, &FIXME, qcmd, out->timeout_ms);
1922         if (IS_ERR(rcmd)) {
1923                 rc = PTR_ERR(rcmd);
1924                 goto end;
1925         }
1926
1927         ctrl = (struct msm_ctrl_cmd *)(rcmd->command);
1928         /* FIXME: we should just set out->length = ctrl->length; */
1929         BUG_ON(out->length < ctrl->length);
1930         memcpy(out->value, ctrl->value, ctrl->length);
1931
1932 end:
1933         kfree(rcmd);
1934         CDBG("__msm_v4l2_control: end rc = %d\n", rc);
1935         return rc;
1936 }
1937
1938 static const struct file_operations msm_fops_config = {
1939         .owner = THIS_MODULE,
1940         .open = msm_open,
1941         .unlocked_ioctl = msm_ioctl_config,
1942         .release = msm_release_config,
1943 };
1944
1945 static const struct file_operations msm_fops_control = {
1946         .owner = THIS_MODULE,
1947         .open = msm_open_control,
1948         .unlocked_ioctl = msm_ioctl_control,
1949         .release = msm_release_control,
1950 };
1951
1952 static const struct file_operations msm_fops_frame = {
1953         .owner = THIS_MODULE,
1954         .open = msm_open,
1955         .unlocked_ioctl = msm_ioctl_frame,
1956         .release = msm_release_frame,
1957         .poll = msm_poll_frame,
1958 };
1959
1960 static int msm_setup_cdev(struct msm_device *msm,
1961                         int node,
1962                         dev_t devno,
1963                         const char *suffix,
1964                         const struct file_operations *fops)
1965 {
1966         int rc = -ENODEV;
1967
1968         struct device *device =
1969                 device_create(msm_class, NULL,
1970                         devno, NULL,
1971                         "%s%d", suffix, node);
1972
1973         if (IS_ERR(device)) {
1974                 rc = PTR_ERR(device);
1975                 pr_err("msm_camera: error creating device: %d\n", rc);
1976                 return rc;
1977         }
1978
1979         cdev_init(&msm->cdev, fops);
1980         msm->cdev.owner = THIS_MODULE;
1981
1982         rc = cdev_add(&msm->cdev, devno, 1);
1983         if (rc < 0) {
1984                 pr_err("msm_camera: error adding cdev: %d\n", rc);
1985                 device_destroy(msm_class, devno);
1986                 return rc;
1987         }
1988
1989         return rc;
1990 }
1991
1992 static int msm_tear_down_cdev(struct msm_device *msm, dev_t devno)
1993 {
1994         cdev_del(&msm->cdev);
1995         device_destroy(msm_class, devno);
1996         return 0;
1997 }
1998
1999 int msm_v4l2_register(struct msm_v4l2_driver *drv)
2000 {
2001         /* FIXME: support multiple sensors */
2002         if (list_empty(&msm_sensors))
2003                 return -ENODEV;
2004
2005         drv->sync = list_first_entry(&msm_sensors, struct msm_sync, list);
2006         drv->open      = __msm_open;
2007         drv->release   = __msm_release;
2008         drv->ctrl      = __msm_v4l2_control;
2009         drv->reg_pmem  = __msm_register_pmem;
2010         drv->get_frame = __msm_get_frame;
2011         drv->put_frame = __msm_put_frame_buf;
2012         drv->get_pict  = __msm_get_pic;
2013         drv->drv_poll  = __msm_poll_frame;
2014
2015         return 0;
2016 }
2017 EXPORT_SYMBOL(msm_v4l2_register);
2018
2019 int msm_v4l2_unregister(struct msm_v4l2_driver *drv)
2020 {
2021         drv->sync = NULL;
2022         return 0;
2023 }
2024 EXPORT_SYMBOL(msm_v4l2_unregister);
2025
2026 static int msm_sync_init(struct msm_sync *sync,
2027                 struct platform_device *pdev,
2028                 int (*sensor_probe)(const struct msm_camera_sensor_info *,
2029                                 struct msm_sensor_ctrl *))
2030 {
2031         int rc = 0;
2032         struct msm_sensor_ctrl sctrl;
2033         sync->sdata = pdev->dev.platform_data;
2034
2035         spin_lock_init(&sync->msg_event_q_lock);
2036         INIT_LIST_HEAD(&sync->msg_event_q);
2037         init_waitqueue_head(&sync->msg_event_wait);
2038
2039         spin_lock_init(&sync->prev_frame_q_lock);
2040         INIT_LIST_HEAD(&sync->prev_frame_q);
2041         init_waitqueue_head(&sync->prev_frame_wait);
2042
2043         spin_lock_init(&sync->pict_frame_q_lock);
2044         INIT_LIST_HEAD(&sync->pict_frame_q);
2045         init_waitqueue_head(&sync->pict_frame_wait);
2046
2047         rc = msm_camio_probe_on(pdev);
2048         if (rc < 0)
2049                 return rc;
2050         rc = sensor_probe(sync->sdata, &sctrl);
2051         if (rc >= 0) {
2052                 sync->pdev = pdev;
2053                 sync->sctrl = sctrl;
2054         }
2055         msm_camio_probe_off(pdev);
2056         if (rc < 0) {
2057                 pr_err("msm_camera: failed to initialize %s\n",
2058                         sync->sdata->sensor_name);
2059                 return rc;
2060         }
2061
2062         sync->opencnt = 0;
2063         mutex_init(&sync->lock);
2064         CDBG("initialized %s\n", sync->sdata->sensor_name);
2065         return rc;
2066 }
2067
2068 static int msm_sync_destroy(struct msm_sync *sync)
2069 {
2070         return 0;
2071 }
2072
2073 static int msm_device_init(struct msm_device *pmsm,
2074                 struct msm_sync *sync,
2075                 int node)
2076 {
2077         int dev_num = 3 * node;
2078         int rc = msm_setup_cdev(pmsm, node,
2079                 MKDEV(MAJOR(msm_devno), dev_num),
2080                 "control", &msm_fops_control);
2081         if (rc < 0) {
2082                 pr_err("error creating control node: %d\n", rc);
2083                 return rc;
2084         }
2085
2086         rc = msm_setup_cdev(pmsm + 1, node,
2087                 MKDEV(MAJOR(msm_devno), dev_num + 1),
2088                 "config", &msm_fops_config);
2089         if (rc < 0) {
2090                 pr_err("error creating config node: %d\n", rc);
2091                 msm_tear_down_cdev(pmsm, MKDEV(MAJOR(msm_devno),
2092                                 dev_num));
2093                 return rc;
2094         }
2095
2096         rc = msm_setup_cdev(pmsm + 2, node,
2097                 MKDEV(MAJOR(msm_devno), dev_num + 2),
2098                 "frame", &msm_fops_frame);
2099         if (rc < 0) {
2100                 pr_err("error creating frame node: %d\n", rc);
2101                 msm_tear_down_cdev(pmsm,
2102                         MKDEV(MAJOR(msm_devno), dev_num));
2103                 msm_tear_down_cdev(pmsm + 1,
2104                         MKDEV(MAJOR(msm_devno), dev_num + 1));
2105                 return rc;
2106         }
2107
2108         atomic_set(&pmsm[0].opened, 0);
2109         atomic_set(&pmsm[1].opened, 0);
2110         atomic_set(&pmsm[2].opened, 0);
2111
2112         pmsm[0].sync = sync;
2113         pmsm[1].sync = sync;
2114         pmsm[2].sync = sync;
2115
2116         return rc;
2117 }
2118
2119 int msm_camera_drv_start(struct platform_device *dev,
2120                 int (*sensor_probe)(const struct msm_camera_sensor_info *,
2121                         struct msm_sensor_ctrl *))
2122 {
2123         struct msm_device *pmsm = NULL;
2124         struct msm_sync *sync;
2125         int rc = -ENODEV;
2126         static int camera_node;
2127
2128         if (camera_node >= MSM_MAX_CAMERA_SENSORS) {
2129                 pr_err("msm_camera: too many camera sensors\n");
2130                 return rc;
2131         }
2132
2133         if (!msm_class) {
2134                 /* There are three device nodes per sensor */
2135                 rc = alloc_chrdev_region(&msm_devno, 0,
2136                                 3 * MSM_MAX_CAMERA_SENSORS,
2137                                 "msm_camera");
2138                 if (rc < 0) {
2139                         pr_err("msm_camera: failed to allocate chrdev: %d\n",
2140                                 rc);
2141                         return rc;
2142                 }
2143
2144                 msm_class = class_create(THIS_MODULE, "msm_camera");
2145                 if (IS_ERR(msm_class)) {
2146                         rc = PTR_ERR(msm_class);
2147                         pr_err("msm_camera: create device class failed: %d\n",
2148                                 rc);
2149                         return rc;
2150                 }
2151         }
2152
2153         pmsm = kzalloc(sizeof(struct msm_device) * 3 +
2154                         sizeof(struct msm_sync), GFP_ATOMIC);
2155         if (!pmsm)
2156                 return -ENOMEM;
2157         sync = (struct msm_sync *)(pmsm + 3);
2158
2159         rc = msm_sync_init(sync, dev, sensor_probe);
2160         if (rc < 0) {
2161                 kfree(pmsm);
2162                 return rc;
2163         }
2164
2165         CDBG("setting camera node %d\n", camera_node);
2166         rc = msm_device_init(pmsm, sync, camera_node);
2167         if (rc < 0) {
2168                 msm_sync_destroy(sync);
2169                 kfree(pmsm);
2170                 return rc;
2171         }
2172
2173         camera_node++;
2174         list_add(&sync->list, &msm_sensors);
2175         return rc;
2176 }
2177 EXPORT_SYMBOL(msm_camera_drv_start);