drivers/media/platform/davinci/vpif_display.c

   1 /*
   2  * vpif-display - VPIF display driver
   3  * Display driver for TI DaVinci VPIF
   4  *
   5  * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
   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 version 2.
  10  *
  11  * This program is distributed .as is. WITHOUT ANY WARRANTY of any
  12  * kind, whether express or implied; without even the implied warranty
  13  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/interrupt.h>
  18 #include <linux/module.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/slab.h>
  21
  22 #include <media/v4l2-ioctl.h>
  23
  24 #include "vpif.h"
  25 #include "vpif_display.h"
  26
  27 MODULE_DESCRIPTION("TI DaVinci VPIF Display driver");
  28 MODULE_LICENSE("GPL");
  29 MODULE_VERSION(VPIF_DISPLAY_VERSION);
  30
  31 #define VPIF_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50)
  32
  33 #define vpif_err(fmt, arg...)   v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
  34 #define vpif_dbg(level, debug, fmt, arg...)     \
  35                 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
  36
  37 static int debug = 1;
  38 static u32 ch2_numbuffers = 3;
  39 static u32 ch3_numbuffers = 3;
  40 static u32 ch2_bufsize = 1920 * 1080 * 2;
  41 static u32 ch3_bufsize = 720 * 576 * 2;
  42
  43 module_param(debug, int, 0644);
  44 module_param(ch2_numbuffers, uint, S_IRUGO);
  45 module_param(ch3_numbuffers, uint, S_IRUGO);
  46 module_param(ch2_bufsize, uint, S_IRUGO);
  47 module_param(ch3_bufsize, uint, S_IRUGO);
  48
  49 MODULE_PARM_DESC(debug, "Debug level 0-1");
  50 MODULE_PARM_DESC(ch2_numbuffers, "Channel2 buffer count (default:3)");
  51 MODULE_PARM_DESC(ch3_numbuffers, "Channel3 buffer count (default:3)");
  52 MODULE_PARM_DESC(ch2_bufsize, "Channel2 buffer size (default:1920 x 1080 x 2)");
  53 MODULE_PARM_DESC(ch3_bufsize, "Channel3 buffer size (default:720 x 576 x 2)");
  54
  55 static struct vpif_config_params config_params = {
  56         .min_numbuffers         = 3,
  57         .numbuffers[0]          = 3,
  58         .numbuffers[1]          = 3,
  59         .min_bufsize[0]         = 720 * 480 * 2,
  60         .min_bufsize[1]         = 720 * 480 * 2,
  61         .channel_bufsize[0]     = 1920 * 1080 * 2,
  62         .channel_bufsize[1]     = 720 * 576 * 2,
  63 };
  64
  65 static struct vpif_device vpif_obj = { {NULL} };
  66 static struct device *vpif_dev;
  67 static void vpif_calculate_offsets(struct channel_obj *ch);
  68 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
  69
  70 /*
  71  * buffer_prepare: This is the callback function called from vb2_qbuf()
  72  * function the buffer is prepared and user space virtual address is converted
  73  * into physical address
  74  */
  75 static int vpif_buffer_prepare(struct vb2_buffer *vb)
  76 {
  77         struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
  78         struct vb2_queue *q = vb->vb2_queue;
  79         struct common_obj *common;
  80         unsigned long addr;
  81
  82         common = &fh->channel->common[VPIF_VIDEO_INDEX];
  83         if (vb->state != VB2_BUF_STATE_ACTIVE &&
  84                 vb->state != VB2_BUF_STATE_PREPARED) {
  85                 vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
  86                 if (vb2_plane_vaddr(vb, 0) &&
  87                 vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
  88                         goto buf_align_exit;
  89
  90                 addr = vb2_dma_contig_plane_dma_addr(vb, 0);
  91                 if (q->streaming &&
  92                         (V4L2_BUF_TYPE_SLICED_VBI_OUTPUT != q->type)) {
  93                         if (!ISALIGNED(addr + common->ytop_off) ||
  94                         !ISALIGNED(addr + common->ybtm_off) ||
  95                         !ISALIGNED(addr + common->ctop_off) ||
  96                         !ISALIGNED(addr + common->cbtm_off))
  97                                 goto buf_align_exit;
  98                 }
  99         }
 100         return 0;
 101
 102 buf_align_exit:
 103         vpif_err("buffer offset not aligned to 8 bytes\n");
 104         return -EINVAL;
 105 }
 106
 107 /*
 108  * vpif_buffer_queue_setup: This function allocates memory for the buffers
 109  */
 110 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
 111                                 const struct v4l2_format *fmt,
 112                                 unsigned int *nbuffers, unsigned int *nplanes,
 113                                 unsigned int sizes[], void *alloc_ctxs[])
 114 {
 115         struct vpif_fh *fh = vb2_get_drv_priv(vq);
 116         struct channel_obj *ch = fh->channel;
 117         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 118         unsigned long size;
 119
 120         if (V4L2_MEMORY_MMAP == common->memory) {
 121                 size = config_params.channel_bufsize[ch->channel_id];
 122                 /*
 123                 * Checking if the buffer size exceeds the available buffer
 124                 * ycmux_mode = 0 means 1 channel mode HD and
 125                 * ycmux_mode = 1 means 2 channels mode SD
 126                 */
 127                 if (ch->vpifparams.std_info.ycmux_mode == 0) {
 128                         if (config_params.video_limit[ch->channel_id])
 129                                 while (size * *nbuffers >
 130                                         (config_params.video_limit[0]
 131                                                 + config_params.video_limit[1]))
 132                                         (*nbuffers)--;
 133                 } else {
 134                         if (config_params.video_limit[ch->channel_id])
 135                                 while (size * *nbuffers >
 136                                 config_params.video_limit[ch->channel_id])
 137                                         (*nbuffers)--;
 138                 }
 139         } else {
 140                 size = common->fmt.fmt.pix.sizeimage;
 141         }
 142
 143         if (*nbuffers < config_params.min_numbuffers)
 144                         *nbuffers = config_params.min_numbuffers;
 145
 146         *nplanes = 1;
 147         sizes[0] = size;
 148         alloc_ctxs[0] = common->alloc_ctx;
 149         return 0;
 150 }
 151
 152 /*
 153  * vpif_buffer_queue: This function adds the buffer to DMA queue
 154  */
 155 static void vpif_buffer_queue(struct vb2_buffer *vb)
 156 {
 157         struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
 158         struct vpif_disp_buffer *buf = container_of(vb,
 159                                 struct vpif_disp_buffer, vb);
 160         struct channel_obj *ch = fh->channel;
 161         struct common_obj *common;
 162         unsigned long flags;
 163
 164         common = &ch->common[VPIF_VIDEO_INDEX];
 165
 166         /* add the buffer to the DMA queue */
 167         spin_lock_irqsave(&common->irqlock, flags);
 168         list_add_tail(&buf->list, &common->dma_queue);
 169         spin_unlock_irqrestore(&common->irqlock, flags);
 170 }
 171
 172 /*
 173  * vpif_buf_cleanup: This function is called from the videobuf2 layer to
 174  * free memory allocated to the buffers
 175  */
 176 static void vpif_buf_cleanup(struct vb2_buffer *vb)
 177 {
 178         struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
 179         struct vpif_disp_buffer *buf = container_of(vb,
 180                                         struct vpif_disp_buffer, vb);
 181         struct channel_obj *ch = fh->channel;
 182         struct common_obj *common;
 183         unsigned long flags;
 184
 185         common = &ch->common[VPIF_VIDEO_INDEX];
 186
 187         spin_lock_irqsave(&common->irqlock, flags);
 188         if (vb->state == VB2_BUF_STATE_ACTIVE)
 189                 list_del_init(&buf->list);
 190         spin_unlock_irqrestore(&common->irqlock, flags);
 191 }
 192
 193 static void vpif_wait_prepare(struct vb2_queue *vq)
 194 {
 195         struct vpif_fh *fh = vb2_get_drv_priv(vq);
 196         struct channel_obj *ch = fh->channel;
 197         struct common_obj *common;
 198
 199         common = &ch->common[VPIF_VIDEO_INDEX];
 200         mutex_unlock(&common->lock);
 201 }
 202
 203 static void vpif_wait_finish(struct vb2_queue *vq)
 204 {
 205         struct vpif_fh *fh = vb2_get_drv_priv(vq);
 206         struct channel_obj *ch = fh->channel;
 207         struct common_obj *common;
 208
 209         common = &ch->common[VPIF_VIDEO_INDEX];
 210         mutex_lock(&common->lock);
 211 }
 212
 213 static int vpif_buffer_init(struct vb2_buffer *vb)
 214 {
 215         struct vpif_disp_buffer *buf = container_of(vb,
 216                                         struct vpif_disp_buffer, vb);
 217
 218         INIT_LIST_HEAD(&buf->list);
 219
 220         return 0;
 221 }
 222
 223 static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} };
 224
 225 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
 226 {
 227         struct vpif_display_config *vpif_config_data =
 228                                         vpif_dev->platform_data;
 229         struct vpif_fh *fh = vb2_get_drv_priv(vq);
 230         struct channel_obj *ch = fh->channel;
 231         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 232         struct vpif_params *vpif = &ch->vpifparams;
 233         unsigned long addr = 0;
 234         unsigned long flags;
 235         int ret;
 236
 237         spin_lock_irqsave(&common->irqlock, flags);
 238
 239         /* Get the next frame from the buffer queue */
 240         common->next_frm = common->cur_frm =
 241                             list_entry(common->dma_queue.next,
 242                                        struct vpif_disp_buffer, list);
 243
 244         list_del(&common->cur_frm->list);
 245         spin_unlock_irqrestore(&common->irqlock, flags);
 246         /* Mark state of the current frame to active */
 247         common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
 248
 249         /* Initialize field_id and started member */
 250         ch->field_id = 0;
 251         common->started = 1;
 252         addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
 253         /* Calculate the offset for Y and C data  in the buffer */
 254         vpif_calculate_offsets(ch);
 255
 256         if ((ch->vpifparams.std_info.frm_fmt &&
 257                 ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE)
 258                 && (common->fmt.fmt.pix.field != V4L2_FIELD_ANY)))
 259                 || (!ch->vpifparams.std_info.frm_fmt
 260                 && (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
 261                 vpif_err("conflict in field format and std format\n");
 262                 return -EINVAL;
 263         }
 264
 265         /* clock settings */
 266         if (vpif_config_data->set_clock) {
 267                 ret = vpif_config_data->set_clock(ch->vpifparams.std_info.
 268                 ycmux_mode, ch->vpifparams.std_info.hd_sd);
 269                 if (ret < 0) {
 270                         vpif_err("can't set clock\n");
 271                         return ret;
 272                 }
 273         }
 274
 275         /* set the parameters and addresses */
 276         ret = vpif_set_video_params(vpif, ch->channel_id + 2);
 277         if (ret < 0)
 278                 return ret;
 279
 280         common->started = ret;
 281         vpif_config_addr(ch, ret);
 282         common->set_addr((addr + common->ytop_off),
 283                             (addr + common->ybtm_off),
 284                             (addr + common->ctop_off),
 285                             (addr + common->cbtm_off));
 286
 287         /* Set interrupt for both the fields in VPIF
 288             Register enable channel in VPIF register */
 289         channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
 290         if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
 291                 channel2_intr_assert();
 292                 channel2_intr_enable(1);
 293                 enable_channel2(1);
 294                 if (vpif_config_data->chan_config[VPIF_CHANNEL2_VIDEO].clip_en)
 295                         channel2_clipping_enable(1);
 296         }
 297
 298         if ((VPIF_CHANNEL3_VIDEO == ch->channel_id)
 299                 || (common->started == 2)) {
 300                 channel3_intr_assert();
 301                 channel3_intr_enable(1);
 302                 enable_channel3(1);
 303                 if (vpif_config_data->chan_config[VPIF_CHANNEL3_VIDEO].clip_en)
 304                         channel3_clipping_enable(1);
 305         }
 306
 307         return 0;
 308 }
 309
 310 /* abort streaming and wait for last buffer */
 311 static int vpif_stop_streaming(struct vb2_queue *vq)
 312 {
 313         struct vpif_fh *fh = vb2_get_drv_priv(vq);
 314         struct channel_obj *ch = fh->channel;
 315         struct common_obj *common;
 316         unsigned long flags;
 317
 318         if (!vb2_is_streaming(vq))
 319                 return 0;
 320
 321         common = &ch->common[VPIF_VIDEO_INDEX];
 322
 323         /* release all active buffers */
 324         spin_lock_irqsave(&common->irqlock, flags);
 325         while (!list_empty(&common->dma_queue)) {
 326                 common->next_frm = list_entry(common->dma_queue.next,
 327                                                 struct vpif_disp_buffer, list);
 328                 list_del(&common->next_frm->list);
 329                 vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
 330         }
 331         spin_unlock_irqrestore(&common->irqlock, flags);
 332
 333         return 0;
 334 }
 335
 336 static struct vb2_ops video_qops = {
 337         .queue_setup            = vpif_buffer_queue_setup,
 338         .wait_prepare           = vpif_wait_prepare,
 339         .wait_finish            = vpif_wait_finish,
 340         .buf_init               = vpif_buffer_init,
 341         .buf_prepare            = vpif_buffer_prepare,
 342         .start_streaming        = vpif_start_streaming,
 343         .stop_streaming         = vpif_stop_streaming,
 344         .buf_cleanup            = vpif_buf_cleanup,
 345         .buf_queue              = vpif_buffer_queue,
 346 };
 347
 348 static void process_progressive_mode(struct common_obj *common)
 349 {
 350         unsigned long addr = 0;
 351
 352         spin_lock(&common->irqlock);
 353         /* Get the next buffer from buffer queue */
 354         common->next_frm = list_entry(common->dma_queue.next,
 355                                 struct vpif_disp_buffer, list);
 356         /* Remove that buffer from the buffer queue */
 357         list_del(&common->next_frm->list);
 358         spin_unlock(&common->irqlock);
 359         /* Mark status of the buffer as active */
 360         common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
 361
 362         /* Set top and bottom field addrs in VPIF registers */
 363         addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
 364         common->set_addr(addr + common->ytop_off,
 365                                  addr + common->ybtm_off,
 366                                  addr + common->ctop_off,
 367                                  addr + common->cbtm_off);
 368 }
 369
 370 static void process_interlaced_mode(int fid, struct common_obj *common)
 371 {
 372         /* device field id and local field id are in sync */
 373         /* If this is even field */
 374         if (0 == fid) {
 375                 if (common->cur_frm == common->next_frm)
 376                         return;
 377
 378                 /* one frame is displayed If next frame is
 379                  *  available, release cur_frm and move on */
 380                 /* Copy frame display time */
 381                 v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp);
 382                 /* Change status of the cur_frm */
 383                 vb2_buffer_done(&common->cur_frm->vb,
 384                                             VB2_BUF_STATE_DONE);
 385                 /* Make cur_frm pointing to next_frm */
 386                 common->cur_frm = common->next_frm;
 387
 388         } else if (1 == fid) {  /* odd field */
 389                 spin_lock(&common->irqlock);
 390                 if (list_empty(&common->dma_queue)
 391                     || (common->cur_frm != common->next_frm)) {
 392                         spin_unlock(&common->irqlock);
 393                         return;
 394                 }
 395                 spin_unlock(&common->irqlock);
 396                 /* one field is displayed configure the next
 397                  * frame if it is available else hold on current
 398                  * frame */
 399                 /* Get next from the buffer queue */
 400                 process_progressive_mode(common);
 401         }
 402 }
 403
 404 /*
 405  * vpif_channel_isr: It changes status of the displayed buffer, takes next
 406  * buffer from the queue and sets its address in VPIF registers
 407  */
 408 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
 409 {
 410         struct vpif_device *dev = &vpif_obj;
 411         struct channel_obj *ch;
 412         struct common_obj *common;
 413         enum v4l2_field field;
 414         int fid = -1, i;
 415         int channel_id = 0;
 416
 417         channel_id = *(int *)(dev_id);
 418         if (!vpif_intr_status(channel_id + 2))
 419                 return IRQ_NONE;
 420
 421         ch = dev->dev[channel_id];
 422         field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
 423         for (i = 0; i < VPIF_NUMOBJECTS; i++) {
 424                 common = &ch->common[i];
 425                 /* If streaming is started in this channel */
 426                 if (0 == common->started)
 427                         continue;
 428
 429                 if (1 == ch->vpifparams.std_info.frm_fmt) {
 430                         spin_lock(&common->irqlock);
 431                         if (list_empty(&common->dma_queue)) {
 432                                 spin_unlock(&common->irqlock);
 433                                 continue;
 434                         }
 435                         spin_unlock(&common->irqlock);
 436
 437                         /* Progressive mode */
 438                         if (!channel_first_int[i][channel_id]) {
 439                                 /* Mark status of the cur_frm to
 440                                  * done and unlock semaphore on it */
 441                                 v4l2_get_timestamp(&common->cur_frm->vb.
 442                                                    v4l2_buf.timestamp);
 443                                 vb2_buffer_done(&common->cur_frm->vb,
 444                                             VB2_BUF_STATE_DONE);
 445                                 /* Make cur_frm pointing to next_frm */
 446                                 common->cur_frm = common->next_frm;
 447                         }
 448
 449                         channel_first_int[i][channel_id] = 0;
 450                         process_progressive_mode(common);
 451                 } else {
 452                         /* Interlaced mode */
 453                         /* If it is first interrupt, ignore it */
 454
 455                         if (channel_first_int[i][channel_id]) {
 456                                 channel_first_int[i][channel_id] = 0;
 457                                 continue;
 458                         }
 459
 460                         if (0 == i) {
 461                                 ch->field_id ^= 1;
 462                                 /* Get field id from VPIF registers */
 463                                 fid = vpif_channel_getfid(ch->channel_id + 2);
 464                                 /* If fid does not match with stored field id */
 465                                 if (fid != ch->field_id) {
 466                                         /* Make them in sync */
 467                                         if (0 == fid)
 468                                                 ch->field_id = fid;
 469
 470                                         return IRQ_HANDLED;
 471                                 }
 472                         }
 473                         process_interlaced_mode(fid, common);
 474                 }
 475         }
 476
 477         return IRQ_HANDLED;
 478 }
 479
 480 static int vpif_update_std_info(struct channel_obj *ch)
 481 {
 482         struct video_obj *vid_ch = &ch->video;
 483         struct vpif_params *vpifparams = &ch->vpifparams;
 484         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
 485         const struct vpif_channel_config_params *config;
 486
 487         int i;
 488
 489         for (i = 0; i < vpif_ch_params_count; i++) {
 490                 config = &vpif_ch_params[i];
 491                 if (config->hd_sd == 0) {
 492                         vpif_dbg(2, debug, "SD format\n");
 493                         if (config->stdid & vid_ch->stdid) {
 494                                 memcpy(std_info, config, sizeof(*config));
 495                                 break;
 496                         }
 497                 }
 498         }
 499
 500         if (i == vpif_ch_params_count) {
 501                 vpif_dbg(1, debug, "Format not found\n");
 502                 return -EINVAL;
 503         }
 504
 505         return 0;
 506 }
 507
 508 static int vpif_update_resolution(struct channel_obj *ch)
 509 {
 510         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 511         struct video_obj *vid_ch = &ch->video;
 512         struct vpif_params *vpifparams = &ch->vpifparams;
 513         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
 514
 515         if (!vid_ch->stdid && !vid_ch->dv_timings.bt.height)
 516                 return -EINVAL;
 517
 518         if (vid_ch->stdid) {
 519                 if (vpif_update_std_info(ch))
 520                         return -EINVAL;
 521         }
 522
 523         common->fmt.fmt.pix.width = std_info->width;
 524         common->fmt.fmt.pix.height = std_info->height;
 525         vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n",
 526                         common->fmt.fmt.pix.width, common->fmt.fmt.pix.height);
 527
 528         /* Set height and width paramateres */
 529         common->height = std_info->height;
 530         common->width = std_info->width;
 531
 532         return 0;
 533 }
 534
 535 /*
 536  * vpif_calculate_offsets: This function calculates buffers offset for Y and C
 537  * in the top and bottom field
 538  */
 539 static void vpif_calculate_offsets(struct channel_obj *ch)
 540 {
 541         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 542         struct vpif_params *vpifparams = &ch->vpifparams;
 543         enum v4l2_field field = common->fmt.fmt.pix.field;
 544         struct video_obj *vid_ch = &ch->video;
 545         unsigned int hpitch, vpitch, sizeimage;
 546
 547         if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) {
 548                 if (ch->vpifparams.std_info.frm_fmt)
 549                         vid_ch->buf_field = V4L2_FIELD_NONE;
 550                 else
 551                         vid_ch->buf_field = V4L2_FIELD_INTERLACED;
 552         } else {
 553                 vid_ch->buf_field = common->fmt.fmt.pix.field;
 554         }
 555
 556         sizeimage = common->fmt.fmt.pix.sizeimage;
 557
 558         hpitch = common->fmt.fmt.pix.bytesperline;
 559         vpitch = sizeimage / (hpitch * 2);
 560         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 561             (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
 562                 common->ytop_off = 0;
 563                 common->ybtm_off = hpitch;
 564                 common->ctop_off = sizeimage / 2;
 565                 common->cbtm_off = sizeimage / 2 + hpitch;
 566         } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
 567                 common->ytop_off = 0;
 568                 common->ybtm_off = sizeimage / 4;
 569                 common->ctop_off = sizeimage / 2;
 570                 common->cbtm_off = common->ctop_off + sizeimage / 4;
 571         } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
 572                 common->ybtm_off = 0;
 573                 common->ytop_off = sizeimage / 4;
 574                 common->cbtm_off = sizeimage / 2;
 575                 common->ctop_off = common->cbtm_off + sizeimage / 4;
 576         }
 577
 578         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 579             (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
 580                 vpifparams->video_params.storage_mode = 1;
 581         } else {
 582                 vpifparams->video_params.storage_mode = 0;
 583         }
 584
 585         if (ch->vpifparams.std_info.frm_fmt == 1) {
 586                 vpifparams->video_params.hpitch =
 587                     common->fmt.fmt.pix.bytesperline;
 588         } else {
 589                 if ((field == V4L2_FIELD_ANY) ||
 590                         (field == V4L2_FIELD_INTERLACED))
 591                         vpifparams->video_params.hpitch =
 592                             common->fmt.fmt.pix.bytesperline * 2;
 593                 else
 594                         vpifparams->video_params.hpitch =
 595                             common->fmt.fmt.pix.bytesperline;
 596         }
 597
 598         ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid;
 599 }
 600
 601 static void vpif_config_format(struct channel_obj *ch)
 602 {
 603         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 604
 605         common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
 606         if (config_params.numbuffers[ch->channel_id] == 0)
 607                 common->memory = V4L2_MEMORY_USERPTR;
 608         else
 609                 common->memory = V4L2_MEMORY_MMAP;
 610
 611         common->fmt.fmt.pix.sizeimage =
 612                         config_params.channel_bufsize[ch->channel_id];
 613         common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
 614         common->fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 615 }
 616
 617 static int vpif_check_format(struct channel_obj *ch,
 618                              struct v4l2_pix_format *pixfmt)
 619 {
 620         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 621         enum v4l2_field field = pixfmt->field;
 622         u32 sizeimage, hpitch, vpitch;
 623
 624         if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
 625                 goto invalid_fmt_exit;
 626
 627         if (!(VPIF_VALID_FIELD(field)))
 628                 goto invalid_fmt_exit;
 629
 630         if (pixfmt->bytesperline <= 0)
 631                 goto invalid_pitch_exit;
 632
 633         sizeimage = pixfmt->sizeimage;
 634
 635         if (vpif_update_resolution(ch))
 636                 return -EINVAL;
 637
 638         hpitch = pixfmt->bytesperline;
 639         vpitch = sizeimage / (hpitch * 2);
 640
 641         /* Check for valid value of pitch */
 642         if ((hpitch < ch->vpifparams.std_info.width) ||
 643             (vpitch < ch->vpifparams.std_info.height))
 644                 goto invalid_pitch_exit;
 645
 646         /* Check for 8 byte alignment */
 647         if (!ISALIGNED(hpitch)) {
 648                 vpif_err("invalid pitch alignment\n");
 649                 return -EINVAL;
 650         }
 651         pixfmt->width = common->fmt.fmt.pix.width;
 652         pixfmt->height = common->fmt.fmt.pix.height;
 653
 654         return 0;
 655
 656 invalid_fmt_exit:
 657         vpif_err("invalid field format\n");
 658         return -EINVAL;
 659
 660 invalid_pitch_exit:
 661         vpif_err("invalid pitch\n");
 662         return -EINVAL;
 663 }
 664
 665 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
 666 {
 667         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 668
 669         if (VPIF_CHANNEL3_VIDEO == ch->channel_id) {
 670                 common->set_addr = ch3_set_videobuf_addr;
 671         } else {
 672                 if (2 == muxmode)
 673                         common->set_addr = ch2_set_videobuf_addr_yc_nmux;
 674                 else
 675                         common->set_addr = ch2_set_videobuf_addr;
 676         }
 677 }
 678
 679 /*
 680  * vpif_mmap: It is used to map kernel space buffers into user spaces
 681  */
 682 static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
 683 {
 684         struct vpif_fh *fh = filep->private_data;
 685         struct channel_obj *ch = fh->channel;
 686         struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
 687         int ret;
 688
 689         vpif_dbg(2, debug, "vpif_mmap\n");
 690
 691         if (mutex_lock_interruptible(&common->lock))
 692                 return -ERESTARTSYS;
 693         ret = vb2_mmap(&common->buffer_queue, vma);
 694         mutex_unlock(&common->lock);
 695         return ret;
 696 }
 697
 698 /*
 699  * vpif_poll: It is used for select/poll system call
 700  */
 701 static unsigned int vpif_poll(struct file *filep, poll_table *wait)
 702 {
 703         struct vpif_fh *fh = filep->private_data;
 704         struct channel_obj *ch = fh->channel;
 705         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 706         unsigned int res = 0;
 707
 708         if (common->started) {
 709                 mutex_lock(&common->lock);
 710                 res = vb2_poll(&common->buffer_queue, filep, wait);
 711                 mutex_unlock(&common->lock);
 712         }
 713
 714         return res;
 715 }
 716
 717 /*
 718  * vpif_open: It creates object of file handle structure and stores it in
 719  * private_data member of filepointer
 720  */
 721 static int vpif_open(struct file *filep)
 722 {
 723         struct video_device *vdev = video_devdata(filep);
 724         struct channel_obj *ch = video_get_drvdata(vdev);
 725         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 726         struct vpif_fh *fh;
 727
 728         /* Allocate memory for the file handle object */
 729         fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL);
 730         if (fh == NULL) {
 731                 vpif_err("unable to allocate memory for file handle object\n");
 732                 return -ENOMEM;
 733         }
 734
 735         if (mutex_lock_interruptible(&common->lock)) {
 736                 kfree(fh);
 737                 return -ERESTARTSYS;
 738         }
 739         /* store pointer to fh in private_data member of filep */
 740         filep->private_data = fh;
 741         fh->channel = ch;
 742         fh->initialized = 0;
 743         if (!ch->initialized) {
 744                 fh->initialized = 1;
 745                 ch->initialized = 1;
 746                 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
 747         }
 748
 749         /* Increment channel usrs counter */
 750         atomic_inc(&ch->usrs);
 751         /* Set io_allowed[VPIF_VIDEO_INDEX] member to false */
 752         fh->io_allowed[VPIF_VIDEO_INDEX] = 0;
 753         /* Initialize priority of this instance to default priority */
 754         fh->prio = V4L2_PRIORITY_UNSET;
 755         v4l2_prio_open(&ch->prio, &fh->prio);
 756         mutex_unlock(&common->lock);
 757
 758         return 0;
 759 }
 760
 761 /*
 762  * vpif_release: This function deletes buffer queue, frees the buffers and
 763  * the vpif file handle
 764  */
 765 static int vpif_release(struct file *filep)
 766 {
 767         struct vpif_fh *fh = filep->private_data;
 768         struct channel_obj *ch = fh->channel;
 769         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 770
 771         mutex_lock(&common->lock);
 772         /* if this instance is doing IO */
 773         if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
 774                 /* Reset io_usrs member of channel object */
 775                 common->io_usrs = 0;
 776                 /* Disable channel */
 777                 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
 778                         enable_channel2(0);
 779                         channel2_intr_enable(0);
 780                 }
 781                 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
 782                     (2 == common->started)) {
 783                         enable_channel3(0);
 784                         channel3_intr_enable(0);
 785                 }
 786                 common->started = 0;
 787
 788                 /* Free buffers allocated */
 789                 vb2_queue_release(&common->buffer_queue);
 790                 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
 791
 792                 common->numbuffers =
 793                     config_params.numbuffers[ch->channel_id];
 794         }
 795
 796         /* Decrement channel usrs counter */
 797         atomic_dec(&ch->usrs);
 798         /* If this file handle has initialize encoder device, reset it */
 799         if (fh->initialized)
 800                 ch->initialized = 0;
 801
 802         /* Close the priority */
 803         v4l2_prio_close(&ch->prio, fh->prio);
 804         filep->private_data = NULL;
 805         fh->initialized = 0;
 806         mutex_unlock(&common->lock);
 807         kfree(fh);
 808
 809         return 0;
 810 }
 811
 812 /* functions implementing ioctls */
 813 /**
 814  * vpif_querycap() - QUERYCAP handler
 815  * @file: file ptr
 816  * @priv: file handle
 817  * @cap: ptr to v4l2_capability structure
 818  */
 819 static int vpif_querycap(struct file *file, void  *priv,
 820                                 struct v4l2_capability *cap)
 821 {
 822         struct vpif_display_config *config = vpif_dev->platform_data;
 823
 824         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
 825         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 826         snprintf(cap->driver, sizeof(cap->driver), "%s", dev_name(vpif_dev));
 827         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 828                  dev_name(vpif_dev));
 829         strlcpy(cap->card, config->card_name, sizeof(cap->card));
 830
 831         return 0;
 832 }
 833
 834 static int vpif_enum_fmt_vid_out(struct file *file, void  *priv,
 835                                         struct v4l2_fmtdesc *fmt)
 836 {
 837         if (fmt->index != 0) {
 838                 vpif_err("Invalid format index\n");
 839                 return -EINVAL;
 840         }
 841
 842         /* Fill in the information about format */
 843         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 844         strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
 845         fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
 846
 847         return 0;
 848 }
 849
 850 static int vpif_g_fmt_vid_out(struct file *file, void *priv,
 851                                 struct v4l2_format *fmt)
 852 {
 853         struct vpif_fh *fh = priv;
 854         struct channel_obj *ch = fh->channel;
 855         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 856
 857         /* Check the validity of the buffer type */
 858         if (common->fmt.type != fmt->type)
 859                 return -EINVAL;
 860
 861         if (vpif_update_resolution(ch))
 862                 return -EINVAL;
 863         *fmt = common->fmt;
 864         return 0;
 865 }
 866
 867 static int vpif_s_fmt_vid_out(struct file *file, void *priv,
 868                                 struct v4l2_format *fmt)
 869 {
 870         struct vpif_fh *fh = priv;
 871         struct v4l2_pix_format *pixfmt;
 872         struct channel_obj *ch = fh->channel;
 873         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 874         int ret = 0;
 875
 876         if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
 877             || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
 878                 if (!fh->initialized) {
 879                         vpif_dbg(1, debug, "Channel Busy\n");
 880                         return -EBUSY;
 881                 }
 882
 883                 /* Check for the priority */
 884                 ret = v4l2_prio_check(&ch->prio, fh->prio);
 885                 if (0 != ret)
 886                         return ret;
 887                 fh->initialized = 1;
 888         }
 889
 890         if (common->started) {
 891                 vpif_dbg(1, debug, "Streaming in progress\n");
 892                 return -EBUSY;
 893         }
 894
 895         pixfmt = &fmt->fmt.pix;
 896         /* Check for valid field format */
 897         ret = vpif_check_format(ch, pixfmt);
 898         if (ret)
 899                 return ret;
 900
 901         /* store the pix format in the channel object */
 902         common->fmt.fmt.pix = *pixfmt;
 903         /* store the format in the channel object */
 904         common->fmt = *fmt;
 905         return 0;
 906 }
 907
 908 static int vpif_try_fmt_vid_out(struct file *file, void *priv,
 909                                 struct v4l2_format *fmt)
 910 {
 911         struct vpif_fh *fh = priv;
 912         struct channel_obj *ch = fh->channel;
 913         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 914         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 915         int ret = 0;
 916
 917         ret = vpif_check_format(ch, pixfmt);
 918         if (ret) {
 919                 *pixfmt = common->fmt.fmt.pix;
 920                 pixfmt->sizeimage = pixfmt->width * pixfmt->height * 2;
 921         }
 922
 923         return ret;
 924 }
 925
 926 static int vpif_reqbufs(struct file *file, void *priv,
 927                         struct v4l2_requestbuffers *reqbuf)
 928 {
 929         struct vpif_fh *fh = priv;
 930         struct channel_obj *ch = fh->channel;
 931         struct common_obj *common;
 932         enum v4l2_field field;
 933         struct vb2_queue *q;
 934         u8 index = 0;
 935         int ret;
 936
 937         /* This file handle has not initialized the channel,
 938            It is not allowed to do settings */
 939         if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
 940             || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
 941                 if (!fh->initialized) {
 942                         vpif_err("Channel Busy\n");
 943                         return -EBUSY;
 944                 }
 945         }
 946
 947         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != reqbuf->type)
 948                 return -EINVAL;
 949
 950         index = VPIF_VIDEO_INDEX;
 951
 952         common = &ch->common[index];
 953
 954         if (common->fmt.type != reqbuf->type || !vpif_dev)
 955                 return -EINVAL;
 956         if (0 != common->io_usrs)
 957                 return -EBUSY;
 958
 959         if (reqbuf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 960                 if (common->fmt.fmt.pix.field == V4L2_FIELD_ANY)
 961                         field = V4L2_FIELD_INTERLACED;
 962                 else
 963                         field = common->fmt.fmt.pix.field;
 964         } else {
 965                 field = V4L2_VBI_INTERLACED;
 966         }
 967         /* Initialize videobuf2 queue as per the buffer type */
 968         common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
 969         if (IS_ERR(common->alloc_ctx)) {
 970                 vpif_err("Failed to get the context\n");
 971                 return PTR_ERR(common->alloc_ctx);
 972         }
 973         q = &common->buffer_queue;
 974         q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 975         q->io_modes = VB2_MMAP | VB2_USERPTR;
 976         q->drv_priv = fh;
 977         q->ops = &video_qops;
 978         q->mem_ops = &vb2_dma_contig_memops;
 979         q->buf_struct_size = sizeof(struct vpif_disp_buffer);
 980         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 981         q->min_buffers_needed = 1;
 982
 983         ret = vb2_queue_init(q);
 984         if (ret) {
 985                 vpif_err("vpif_display: vb2_queue_init() failed\n");
 986                 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
 987                 return ret;
 988         }
 989         /* Set io allowed member of file handle to TRUE */
 990         fh->io_allowed[index] = 1;
 991         /* Increment io usrs member of channel object to 1 */
 992         common->io_usrs = 1;
 993         /* Store type of memory requested in channel object */
 994         common->memory = reqbuf->memory;
 995         INIT_LIST_HEAD(&common->dma_queue);
 996         /* Allocate buffers */
 997         return vb2_reqbufs(&common->buffer_queue, reqbuf);
 998 }
 999
1000 static int vpif_querybuf(struct file *file, void *priv,
1001                                 struct v4l2_buffer *tbuf)
1002 {
1003         struct vpif_fh *fh = priv;
1004         struct channel_obj *ch = fh->channel;
1005         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1006
1007         if (common->fmt.type != tbuf->type)
1008                 return -EINVAL;
1009
1010         return vb2_querybuf(&common->buffer_queue, tbuf);
1011 }
1012
1013 static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1014 {
1015         struct vpif_fh *fh = NULL;
1016         struct channel_obj *ch = NULL;
1017         struct common_obj *common = NULL;
1018
1019         if (!buf || !priv)
1020                 return -EINVAL;
1021
1022         fh = priv;
1023         ch = fh->channel;
1024         if (!ch)
1025                 return -EINVAL;
1026
1027         common = &(ch->common[VPIF_VIDEO_INDEX]);
1028         if (common->fmt.type != buf->type)
1029                 return -EINVAL;
1030
1031         if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1032                 vpif_err("fh->io_allowed\n");
1033                 return -EACCES;
1034         }
1035
1036         return vb2_qbuf(&common->buffer_queue, buf);
1037 }
1038
1039 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
1040 {
1041         struct vpif_fh *fh = priv;
1042         struct channel_obj *ch = fh->channel;
1043         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1044         int ret = 0;
1045
1046         if (!(std_id & VPIF_V4L2_STD))
1047                 return -EINVAL;
1048
1049         if (common->started) {
1050                 vpif_err("streaming in progress\n");
1051                 return -EBUSY;
1052         }
1053
1054         /* Call encoder subdevice function to set the standard */
1055         ch->video.stdid = std_id;
1056         memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1057         /* Get the information about the standard */
1058         if (vpif_update_resolution(ch))
1059                 return -EINVAL;
1060
1061         if ((ch->vpifparams.std_info.width *
1062                 ch->vpifparams.std_info.height * 2) >
1063                 config_params.channel_bufsize[ch->channel_id]) {
1064                 vpif_err("invalid std for this size\n");
1065                 return -EINVAL;
1066         }
1067
1068         common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width;
1069         /* Configure the default format information */
1070         vpif_config_format(ch);
1071
1072         ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
1073                                                 s_std_output, std_id);
1074         if (ret < 0) {
1075                 vpif_err("Failed to set output standard\n");
1076                 return ret;
1077         }
1078
1079         ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, core,
1080                                                         s_std, std_id);
1081         if (ret < 0)
1082                 vpif_err("Failed to set standard for sub devices\n");
1083         return ret;
1084 }
1085
1086 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
1087 {
1088         struct vpif_fh *fh = priv;
1089         struct channel_obj *ch = fh->channel;
1090
1091         *std = ch->video.stdid;
1092         return 0;
1093 }
1094
1095 static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1096 {
1097         struct vpif_fh *fh = priv;
1098         struct channel_obj *ch = fh->channel;
1099         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1100
1101         return vb2_dqbuf(&common->buffer_queue, p,
1102                                         (file->f_flags & O_NONBLOCK));
1103 }
1104
1105 static int vpif_streamon(struct file *file, void *priv,
1106                                 enum v4l2_buf_type buftype)
1107 {
1108         struct vpif_fh *fh = priv;
1109         struct channel_obj *ch = fh->channel;
1110         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1111         struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
1112         int ret = 0;
1113
1114         if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1115                 vpif_err("buffer type not supported\n");
1116                 return -EINVAL;
1117         }
1118
1119         if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1120                 vpif_err("fh->io_allowed\n");
1121                 return -EACCES;
1122         }
1123
1124         /* If Streaming is already started, return error */
1125         if (common->started) {
1126                 vpif_err("channel->started\n");
1127                 return -EBUSY;
1128         }
1129
1130         if ((ch->channel_id == VPIF_CHANNEL2_VIDEO
1131                 && oth_ch->common[VPIF_VIDEO_INDEX].started &&
1132                 ch->vpifparams.std_info.ycmux_mode == 0)
1133                 || ((ch->channel_id == VPIF_CHANNEL3_VIDEO)
1134                 && (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
1135                 vpif_err("other channel is using\n");
1136                 return -EBUSY;
1137         }
1138
1139         ret = vpif_check_format(ch, &common->fmt.fmt.pix);
1140         if (ret < 0)
1141                 return ret;
1142
1143         /* Call vb2_streamon to start streaming in videobuf2 */
1144         ret = vb2_streamon(&common->buffer_queue, buftype);
1145         if (ret < 0) {
1146                 vpif_err("vb2_streamon\n");
1147                 return ret;
1148         }
1149
1150         return ret;
1151 }
1152
1153 static int vpif_streamoff(struct file *file, void *priv,
1154                                 enum v4l2_buf_type buftype)
1155 {
1156         struct vpif_fh *fh = priv;
1157         struct channel_obj *ch = fh->channel;
1158         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1159         struct vpif_display_config *vpif_config_data =
1160                                         vpif_dev->platform_data;
1161
1162         if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1163                 vpif_err("buffer type not supported\n");
1164                 return -EINVAL;
1165         }
1166
1167         if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1168                 vpif_err("fh->io_allowed\n");
1169                 return -EACCES;
1170         }
1171
1172         if (!common->started) {
1173                 vpif_err("channel->started\n");
1174                 return -EINVAL;
1175         }
1176
1177         if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1178                 /* disable channel */
1179                 if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
1180                         if (vpif_config_data->
1181                                 chan_config[VPIF_CHANNEL2_VIDEO].clip_en)
1182                                 channel2_clipping_enable(0);
1183                         enable_channel2(0);
1184                         channel2_intr_enable(0);
1185                 }
1186                 if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
1187                                         (2 == common->started)) {
1188                         if (vpif_config_data->
1189                                 chan_config[VPIF_CHANNEL3_VIDEO].clip_en)
1190                                 channel3_clipping_enable(0);
1191                         enable_channel3(0);
1192                         channel3_intr_enable(0);
1193                 }
1194         }
1195
1196         common->started = 0;
1197         return vb2_streamoff(&common->buffer_queue, buftype);
1198 }
1199
1200 static int vpif_cropcap(struct file *file, void *priv,
1201                         struct v4l2_cropcap *crop)
1202 {
1203         struct vpif_fh *fh = priv;
1204         struct channel_obj *ch = fh->channel;
1205         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1206         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != crop->type)
1207                 return -EINVAL;
1208
1209         crop->bounds.left = crop->bounds.top = 0;
1210         crop->defrect.left = crop->defrect.top = 0;
1211         crop->defrect.height = crop->bounds.height = common->height;
1212         crop->defrect.width = crop->bounds.width = common->width;
1213
1214         return 0;
1215 }
1216
1217 static int vpif_enum_output(struct file *file, void *fh,
1218                                 struct v4l2_output *output)
1219 {
1220
1221         struct vpif_display_config *config = vpif_dev->platform_data;
1222         struct vpif_display_chan_config *chan_cfg;
1223         struct vpif_fh *vpif_handler = fh;
1224         struct channel_obj *ch = vpif_handler->channel;
1225
1226         chan_cfg = &config->chan_config[ch->channel_id];
1227         if (output->index >= chan_cfg->output_count) {
1228                 vpif_dbg(1, debug, "Invalid output index\n");
1229                 return -EINVAL;
1230         }
1231
1232         *output = chan_cfg->outputs[output->index].output;
1233         return 0;
1234 }
1235
1236 /**
1237  * vpif_output_to_subdev() - Maps output to sub device
1238  * @vpif_cfg - global config ptr
1239  * @chan_cfg - channel config ptr
1240  * @index - Given output index from application
1241  *
1242  * lookup the sub device information for a given output index.
1243  * we report all the output to application. output table also
1244  * has sub device name for the each output
1245  */
1246 static int
1247 vpif_output_to_subdev(struct vpif_display_config *vpif_cfg,
1248                       struct vpif_display_chan_config *chan_cfg, int index)
1249 {
1250         struct vpif_subdev_info *subdev_info;
1251         const char *subdev_name;
1252         int i;
1253
1254         vpif_dbg(2, debug, "vpif_output_to_subdev\n");
1255
1256         if (chan_cfg->outputs == NULL)
1257                 return -1;
1258
1259         subdev_name = chan_cfg->outputs[index].subdev_name;
1260         if (subdev_name == NULL)
1261                 return -1;
1262
1263         /* loop through the sub device list to get the sub device info */
1264         for (i = 0; i < vpif_cfg->subdev_count; i++) {
1265                 subdev_info = &vpif_cfg->subdevinfo[i];
1266                 if (!strcmp(subdev_info->name, subdev_name))
1267                         return i;
1268         }
1269         return -1;
1270 }
1271
1272 /**
1273  * vpif_set_output() - Select an output
1274  * @vpif_cfg - global config ptr
1275  * @ch - channel
1276  * @index - Given output index from application
1277  *
1278  * Select the given output.
1279  */
1280 static int vpif_set_output(struct vpif_display_config *vpif_cfg,
1281                       struct channel_obj *ch, int index)
1282 {
1283         struct vpif_display_chan_config *chan_cfg =
1284                 &vpif_cfg->chan_config[ch->channel_id];
1285         struct vpif_subdev_info *subdev_info = NULL;
1286         struct v4l2_subdev *sd = NULL;
1287         u32 input = 0, output = 0;
1288         int sd_index;
1289         int ret;
1290
1291         sd_index = vpif_output_to_subdev(vpif_cfg, chan_cfg, index);
1292         if (sd_index >= 0) {
1293                 sd = vpif_obj.sd[sd_index];
1294                 subdev_info = &vpif_cfg->subdevinfo[sd_index];
1295         }
1296
1297         if (sd) {
1298                 input = chan_cfg->outputs[index].input_route;
1299                 output = chan_cfg->outputs[index].output_route;
1300                 ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0);
1301                 if (ret < 0 && ret != -ENOIOCTLCMD) {
1302                         vpif_err("Failed to set output\n");
1303                         return ret;
1304                 }
1305
1306         }
1307         ch->output_idx = index;
1308         ch->sd = sd;
1309         if (chan_cfg->outputs != NULL)
1310                 /* update tvnorms from the sub device output info */
1311                 ch->video_dev->tvnorms = chan_cfg->outputs[index].output.std;
1312         return 0;
1313 }
1314
1315 static int vpif_s_output(struct file *file, void *priv, unsigned int i)
1316 {
1317         struct vpif_display_config *config = vpif_dev->platform_data;
1318         struct vpif_display_chan_config *chan_cfg;
1319         struct vpif_fh *fh = priv;
1320         struct channel_obj *ch = fh->channel;
1321         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1322
1323         chan_cfg = &config->chan_config[ch->channel_id];
1324
1325         if (i >= chan_cfg->output_count)
1326                 return -EINVAL;
1327
1328         if (common->started) {
1329                 vpif_err("Streaming in progress\n");
1330                 return -EBUSY;
1331         }
1332
1333         return vpif_set_output(config, ch, i);
1334 }
1335
1336 static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
1337 {
1338         struct vpif_fh *fh = priv;
1339         struct channel_obj *ch = fh->channel;
1340
1341         *i = ch->output_idx;
1342
1343         return 0;
1344 }
1345
1346 static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *p)
1347 {
1348         struct vpif_fh *fh = priv;
1349         struct channel_obj *ch = fh->channel;
1350
1351         *p = v4l2_prio_max(&ch->prio);
1352
1353         return 0;
1354 }
1355
1356 static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p)
1357 {
1358         struct vpif_fh *fh = priv;
1359         struct channel_obj *ch = fh->channel;
1360
1361         return v4l2_prio_change(&ch->prio, &fh->prio, p);
1362 }
1363
1364 /**
1365  * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1366  * @file: file ptr
1367  * @priv: file handle
1368  * @timings: input timings
1369  */
1370 static int
1371 vpif_enum_dv_timings(struct file *file, void *priv,
1372                      struct v4l2_enum_dv_timings *timings)
1373 {
1374         struct vpif_fh *fh = priv;
1375         struct channel_obj *ch = fh->channel;
1376         int ret;
1377
1378         ret = v4l2_subdev_call(ch->sd, video, enum_dv_timings, timings);
1379         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1380                 return -EINVAL;
1381         return ret;
1382 }
1383
1384 /**
1385  * vpif_s_dv_timings() - S_DV_TIMINGS handler
1386  * @file: file ptr
1387  * @priv: file handle
1388  * @timings: digital video timings
1389  */
1390 static int vpif_s_dv_timings(struct file *file, void *priv,
1391                 struct v4l2_dv_timings *timings)
1392 {
1393         struct vpif_fh *fh = priv;
1394         struct channel_obj *ch = fh->channel;
1395         struct vpif_params *vpifparams = &ch->vpifparams;
1396         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1397         struct video_obj *vid_ch = &ch->video;
1398         struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1399         int ret;
1400
1401         if (timings->type != V4L2_DV_BT_656_1120) {
1402                 vpif_dbg(2, debug, "Timing type not defined\n");
1403                 return -EINVAL;
1404         }
1405
1406         /* Configure subdevice timings, if any */
1407         ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1408         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1409                 ret = 0;
1410         if (ret < 0) {
1411                 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1412                 return ret;
1413         }
1414
1415         if (!(timings->bt.width && timings->bt.height &&
1416                                 (timings->bt.hbackporch ||
1417                                  timings->bt.hfrontporch ||
1418                                  timings->bt.hsync) &&
1419                                 timings->bt.vfrontporch &&
1420                                 (timings->bt.vbackporch ||
1421                                  timings->bt.vsync))) {
1422                 vpif_dbg(2, debug, "Timings for width, height, "
1423                                 "horizontal back porch, horizontal sync, "
1424                                 "horizontal front porch, vertical back porch, "
1425                                 "vertical sync and vertical back porch "
1426                                 "must be defined\n");
1427                 return -EINVAL;
1428         }
1429
1430         vid_ch->dv_timings = *timings;
1431
1432         /* Configure video port timings */
1433
1434         std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1435         std_info->sav2eav = bt->width;
1436
1437         std_info->l1 = 1;
1438         std_info->l3 = bt->vsync + bt->vbackporch + 1;
1439
1440         std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1441         if (bt->interlaced) {
1442                 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1443                         std_info->l5 = std_info->vsize/2 -
1444                                 (bt->vfrontporch - 1);
1445                         std_info->l7 = std_info->vsize/2 + 1;
1446                         std_info->l9 = std_info->l7 + bt->il_vsync +
1447                                 bt->il_vbackporch + 1;
1448                         std_info->l11 = std_info->vsize -
1449                                 (bt->il_vfrontporch - 1);
1450                 } else {
1451                         vpif_dbg(2, debug, "Required timing values for "
1452                                         "interlaced BT format missing\n");
1453                         return -EINVAL;
1454                 }
1455         } else {
1456                 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1457         }
1458         strncpy(std_info->name, "Custom timings BT656/1120",
1459                         VPIF_MAX_NAME);
1460         std_info->width = bt->width;
1461         std_info->height = bt->height;
1462         std_info->frm_fmt = bt->interlaced ? 0 : 1;
1463         std_info->ycmux_mode = 0;
1464         std_info->capture_format = 0;
1465         std_info->vbi_supported = 0;
1466         std_info->hd_sd = 1;
1467         std_info->stdid = 0;
1468         vid_ch->stdid = 0;
1469
1470         return 0;
1471 }
1472
1473 /**
1474  * vpif_g_dv_timings() - G_DV_TIMINGS handler
1475  * @file: file ptr
1476  * @priv: file handle
1477  * @timings: digital video timings
1478  */
1479 static int vpif_g_dv_timings(struct file *file, void *priv,
1480                 struct v4l2_dv_timings *timings)
1481 {
1482         struct vpif_fh *fh = priv;
1483         struct channel_obj *ch = fh->channel;
1484         struct video_obj *vid_ch = &ch->video;
1485
1486         *timings = vid_ch->dv_timings;
1487
1488         return 0;
1489 }
1490
1491 /*
1492  * vpif_log_status() - Status information
1493  * @file: file ptr
1494  * @priv: file handle
1495  *
1496  * Returns zero.
1497  */
1498 static int vpif_log_status(struct file *filep, void *priv)
1499 {
1500         /* status for sub devices */
1501         v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1502
1503         return 0;
1504 }
1505
1506 /* vpif display ioctl operations */
1507 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1508         .vidioc_querycap                = vpif_querycap,
1509         .vidioc_g_priority              = vpif_g_priority,
1510         .vidioc_s_priority              = vpif_s_priority,
1511         .vidioc_enum_fmt_vid_out        = vpif_enum_fmt_vid_out,
1512         .vidioc_g_fmt_vid_out           = vpif_g_fmt_vid_out,
1513         .vidioc_s_fmt_vid_out           = vpif_s_fmt_vid_out,
1514         .vidioc_try_fmt_vid_out         = vpif_try_fmt_vid_out,
1515         .vidioc_reqbufs                 = vpif_reqbufs,
1516         .vidioc_querybuf                = vpif_querybuf,
1517         .vidioc_qbuf                    = vpif_qbuf,
1518         .vidioc_dqbuf                   = vpif_dqbuf,
1519         .vidioc_streamon                = vpif_streamon,
1520         .vidioc_streamoff               = vpif_streamoff,
1521         .vidioc_s_std                   = vpif_s_std,
1522         .vidioc_g_std                   = vpif_g_std,
1523         .vidioc_enum_output             = vpif_enum_output,
1524         .vidioc_s_output                = vpif_s_output,
1525         .vidioc_g_output                = vpif_g_output,
1526         .vidioc_cropcap                 = vpif_cropcap,
1527         .vidioc_enum_dv_timings         = vpif_enum_dv_timings,
1528         .vidioc_s_dv_timings            = vpif_s_dv_timings,
1529         .vidioc_g_dv_timings            = vpif_g_dv_timings,
1530         .vidioc_log_status              = vpif_log_status,
1531 };
1532
1533 static const struct v4l2_file_operations vpif_fops = {
1534         .owner          = THIS_MODULE,
1535         .open           = vpif_open,
1536         .release        = vpif_release,
1537         .unlocked_ioctl = video_ioctl2,
1538         .mmap           = vpif_mmap,
1539         .poll           = vpif_poll
1540 };
1541
1542 static struct video_device vpif_video_template = {
1543         .name           = "vpif",
1544         .fops           = &vpif_fops,
1545         .ioctl_ops      = &vpif_ioctl_ops,
1546 };
1547
1548 /*Configure the channels, buffer sizei, request irq */
1549 static int initialize_vpif(void)
1550 {
1551         int free_channel_objects_index;
1552         int free_buffer_channel_index;
1553         int free_buffer_index;
1554         int err = 0, i, j;
1555
1556         /* Default number of buffers should be 3 */
1557         if ((ch2_numbuffers > 0) &&
1558             (ch2_numbuffers < config_params.min_numbuffers))
1559                 ch2_numbuffers = config_params.min_numbuffers;
1560         if ((ch3_numbuffers > 0) &&
1561             (ch3_numbuffers < config_params.min_numbuffers))
1562                 ch3_numbuffers = config_params.min_numbuffers;
1563
1564         /* Set buffer size to min buffers size if invalid buffer size is
1565          * given */
1566         if (ch2_bufsize < config_params.min_bufsize[VPIF_CHANNEL2_VIDEO])
1567                 ch2_bufsize =
1568                     config_params.min_bufsize[VPIF_CHANNEL2_VIDEO];
1569         if (ch3_bufsize < config_params.min_bufsize[VPIF_CHANNEL3_VIDEO])
1570                 ch3_bufsize =
1571                     config_params.min_bufsize[VPIF_CHANNEL3_VIDEO];
1572
1573         config_params.numbuffers[VPIF_CHANNEL2_VIDEO] = ch2_numbuffers;
1574
1575         if (ch2_numbuffers) {
1576                 config_params.channel_bufsize[VPIF_CHANNEL2_VIDEO] =
1577                                                         ch2_bufsize;
1578         }
1579         config_params.numbuffers[VPIF_CHANNEL3_VIDEO] = ch3_numbuffers;
1580
1581         if (ch3_numbuffers) {
1582                 config_params.channel_bufsize[VPIF_CHANNEL3_VIDEO] =
1583                                                         ch3_bufsize;
1584         }
1585
1586         /* Allocate memory for six channel objects */
1587         for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1588                 vpif_obj.dev[i] =
1589                     kzalloc(sizeof(struct channel_obj), GFP_KERNEL);
1590                 /* If memory allocation fails, return error */
1591                 if (!vpif_obj.dev[i]) {
1592                         free_channel_objects_index = i;
1593                         err = -ENOMEM;
1594                         goto vpif_init_free_channel_objects;
1595                 }
1596         }
1597
1598         free_channel_objects_index = VPIF_DISPLAY_MAX_DEVICES;
1599         free_buffer_channel_index = VPIF_DISPLAY_NUM_CHANNELS;
1600         free_buffer_index = config_params.numbuffers[i - 1];
1601
1602         return 0;
1603
1604 vpif_init_free_channel_objects:
1605         for (j = 0; j < free_channel_objects_index; j++)
1606                 kfree(vpif_obj.dev[j]);
1607         return err;
1608 }
1609
1610 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1611                             struct v4l2_subdev *subdev,
1612                             struct v4l2_async_subdev *asd)
1613 {
1614         int i;
1615
1616         for (i = 0; i < vpif_obj.config->subdev_count; i++)
1617                 if (!strcmp(vpif_obj.config->subdevinfo[i].name,
1618                             subdev->name)) {
1619                         vpif_obj.sd[i] = subdev;
1620                         vpif_obj.sd[i]->grp_id = 1 << i;
1621                         return 0;
1622                 }
1623
1624         return -EINVAL;
1625 }
1626
1627 static int vpif_probe_complete(void)
1628 {
1629         struct common_obj *common;
1630         struct channel_obj *ch;
1631         int j, err, k;
1632
1633         for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1634                 ch = vpif_obj.dev[j];
1635                 /* Initialize field of the channel objects */
1636                 atomic_set(&ch->usrs, 0);
1637                 for (k = 0; k < VPIF_NUMOBJECTS; k++) {
1638                         ch->common[k].numbuffers = 0;
1639                         common = &ch->common[k];
1640                         common->io_usrs = 0;
1641                         common->started = 0;
1642                         spin_lock_init(&common->irqlock);
1643                         mutex_init(&common->lock);
1644                         common->numbuffers = 0;
1645                         common->set_addr = NULL;
1646                         common->ytop_off = 0;
1647                         common->ybtm_off = 0;
1648                         common->ctop_off = 0;
1649                         common->cbtm_off = 0;
1650                         common->cur_frm = NULL;
1651                         common->next_frm = NULL;
1652                         memset(&common->fmt, 0, sizeof(common->fmt));
1653                         common->numbuffers = config_params.numbuffers[k];
1654                 }
1655                 ch->initialized = 0;
1656                 if (vpif_obj.config->subdev_count)
1657                         ch->sd = vpif_obj.sd[0];
1658                 ch->channel_id = j;
1659                 if (j < 2)
1660                         ch->common[VPIF_VIDEO_INDEX].numbuffers =
1661                             config_params.numbuffers[ch->channel_id];
1662                 else
1663                         ch->common[VPIF_VIDEO_INDEX].numbuffers = 0;
1664
1665                 memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
1666
1667                 /* Initialize prio member of channel object */
1668                 v4l2_prio_init(&ch->prio);
1669                 ch->common[VPIF_VIDEO_INDEX].fmt.type =
1670                                                 V4L2_BUF_TYPE_VIDEO_OUTPUT;
1671                 ch->video_dev->lock = &common->lock;
1672                 video_set_drvdata(ch->video_dev, ch);
1673
1674                 /* select output 0 */
1675                 err = vpif_set_output(vpif_obj.config, ch, 0);
1676                 if (err)
1677                         goto probe_out;
1678
1679                 /* register video device */
1680                 vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n",
1681                          (int)ch, (int)&ch->video_dev);
1682
1683                 err = video_register_device(ch->video_dev,
1684                                           VFL_TYPE_GRABBER, (j ? 3 : 2));
1685                 if (err < 0)
1686                         goto probe_out;
1687         }
1688
1689         return 0;
1690
1691 probe_out:
1692         for (k = 0; k < j; k++) {
1693                 ch = vpif_obj.dev[k];
1694                 video_unregister_device(ch->video_dev);
1695                 video_device_release(ch->video_dev);
1696                 ch->video_dev = NULL;
1697         }
1698         return err;
1699 }
1700
1701 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1702 {
1703         return vpif_probe_complete();
1704 }
1705
1706 /*
1707  * vpif_probe: This function creates device entries by register itself to the
1708  * V4L2 driver and initializes fields of each channel objects
1709  */
1710 static __init int vpif_probe(struct platform_device *pdev)
1711 {
1712         struct vpif_subdev_info *subdevdata;
1713         int i, j = 0, err = 0;
1714         int res_idx = 0;
1715         struct i2c_adapter *i2c_adap;
1716         struct channel_obj *ch;
1717         struct video_device *vfd;
1718         struct resource *res;
1719         int subdev_count;
1720         size_t size;
1721
1722         vpif_dev = &pdev->dev;
1723         err = initialize_vpif();
1724
1725         if (err) {
1726                 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1727                 return err;
1728         }
1729
1730         err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1731         if (err) {
1732                 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1733                 return err;
1734         }
1735
1736         while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1737                 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1738                                         IRQF_SHARED, "VPIF_Display",
1739                                         (void *)(&vpif_obj.dev[res_idx]->
1740                                         channel_id));
1741                 if (err) {
1742                         err = -EINVAL;
1743                         vpif_err("VPIF IRQ request failed\n");
1744                         goto vpif_unregister;
1745                 }
1746                 res_idx++;
1747         }
1748
1749         for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1750                 /* Get the pointer to the channel object */
1751                 ch = vpif_obj.dev[i];
1752
1753                 /* Allocate memory for video device */
1754                 vfd = video_device_alloc();
1755                 if (vfd == NULL) {
1756                         for (j = 0; j < i; j++) {
1757                                 ch = vpif_obj.dev[j];
1758                                 video_device_release(ch->video_dev);
1759                         }
1760                         err = -ENOMEM;
1761                         goto vpif_unregister;
1762                 }
1763
1764                 /* Initialize field of video device */
1765                 *vfd = vpif_video_template;
1766                 vfd->v4l2_dev = &vpif_obj.v4l2_dev;
1767                 vfd->release = video_device_release;
1768                 vfd->vfl_dir = VFL_DIR_TX;
1769                 snprintf(vfd->name, sizeof(vfd->name),
1770                          "VPIF_Display_DRIVER_V%s",
1771                          VPIF_DISPLAY_VERSION);
1772
1773                 /* Set video_dev to the video device */
1774                 ch->video_dev = vfd;
1775         }
1776
1777         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1778         if (res) {
1779                 size = resource_size(res);
1780                 /* The resources are divided into two equal memory and when
1781                  * we have HD output we can add them together
1782                  */
1783                 for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1784                         ch = vpif_obj.dev[j];
1785                         ch->channel_id = j;
1786
1787                         /* only enabled if second resource exists */
1788                         config_params.video_limit[ch->channel_id] = 0;
1789                         if (size)
1790                                 config_params.video_limit[ch->channel_id] =
1791                                                                         size/2;
1792                 }
1793         }
1794         vpif_obj.config = pdev->dev.platform_data;
1795         subdev_count = vpif_obj.config->subdev_count;
1796         subdevdata = vpif_obj.config->subdevinfo;
1797         vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1798                                                                 GFP_KERNEL);
1799         if (vpif_obj.sd == NULL) {
1800                 vpif_err("unable to allocate memory for subdevice pointers\n");
1801                 err = -ENOMEM;
1802                 goto vpif_sd_error;
1803         }
1804
1805         if (!vpif_obj.config->asd_sizes) {
1806                 i2c_adap = i2c_get_adapter(1);
1807                 for (i = 0; i < subdev_count; i++) {
1808                         vpif_obj.sd[i] =
1809                                 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1810                                                           i2c_adap,
1811                                                           &subdevdata[i].
1812                                                           board_info,
1813                                                           NULL);
1814                         if (!vpif_obj.sd[i]) {
1815                                 vpif_err("Error registering v4l2 subdevice\n");
1816                                 err = -ENODEV;
1817                                 goto probe_subdev_out;
1818                         }
1819
1820                         if (vpif_obj.sd[i])
1821                                 vpif_obj.sd[i]->grp_id = 1 << i;
1822                 }
1823                 vpif_probe_complete();
1824         } else {
1825                 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1826                 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1827                 vpif_obj.notifier.bound = vpif_async_bound;
1828                 vpif_obj.notifier.complete = vpif_async_complete;
1829                 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1830                                                    &vpif_obj.notifier);
1831                 if (err) {
1832                         vpif_err("Error registering async notifier\n");
1833                         err = -EINVAL;
1834                         goto probe_subdev_out;
1835                 }
1836         }
1837
1838         return 0;
1839
1840 probe_subdev_out:
1841         kfree(vpif_obj.sd);
1842 vpif_sd_error:
1843         for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1844                 ch = vpif_obj.dev[i];
1845                 /* Note: does nothing if ch->video_dev == NULL */
1846                 video_device_release(ch->video_dev);
1847         }
1848 vpif_unregister:
1849         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1850
1851         return err;
1852 }
1853
1854 /*
1855  * vpif_remove: It un-register channels from V4L2 driver
1856  */
1857 static int vpif_remove(struct platform_device *device)
1858 {
1859         struct channel_obj *ch;
1860         int i;
1861
1862         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1863
1864         kfree(vpif_obj.sd);
1865         /* un-register device */
1866         for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1867                 /* Get the pointer to the channel object */
1868                 ch = vpif_obj.dev[i];
1869                 /* Unregister video device */
1870                 video_unregister_device(ch->video_dev);
1871
1872                 ch->video_dev = NULL;
1873                 kfree(vpif_obj.dev[i]);
1874         }
1875
1876         return 0;
1877 }
1878
1879 #ifdef CONFIG_PM
1880 static int vpif_suspend(struct device *dev)
1881 {
1882         struct common_obj *common;
1883         struct channel_obj *ch;
1884         int i;
1885
1886         for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1887                 /* Get the pointer to the channel object */
1888                 ch = vpif_obj.dev[i];
1889                 common = &ch->common[VPIF_VIDEO_INDEX];
1890                 mutex_lock(&common->lock);
1891                 if (atomic_read(&ch->usrs) && common->io_usrs) {
1892                         /* Disable channel */
1893                         if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1894                                 enable_channel2(0);
1895                                 channel2_intr_enable(0);
1896                         }
1897                         if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1898                                         common->started == 2) {
1899                                 enable_channel3(0);
1900                                 channel3_intr_enable(0);
1901                         }
1902                 }
1903                 mutex_unlock(&common->lock);
1904         }
1905
1906         return 0;
1907 }
1908
1909 static int vpif_resume(struct device *dev)
1910 {
1911
1912         struct common_obj *common;
1913         struct channel_obj *ch;
1914         int i;
1915
1916         for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1917                 /* Get the pointer to the channel object */
1918                 ch = vpif_obj.dev[i];
1919                 common = &ch->common[VPIF_VIDEO_INDEX];
1920                 mutex_lock(&common->lock);
1921                 if (atomic_read(&ch->usrs) && common->io_usrs) {
1922                         /* Enable channel */
1923                         if (ch->channel_id == VPIF_CHANNEL2_VIDEO) {
1924                                 enable_channel2(1);
1925                                 channel2_intr_enable(1);
1926                         }
1927                         if (ch->channel_id == VPIF_CHANNEL3_VIDEO ||
1928                                         common->started == 2) {
1929                                 enable_channel3(1);
1930                                 channel3_intr_enable(1);
1931                         }
1932                 }
1933                 mutex_unlock(&common->lock);
1934         }
1935
1936         return 0;
1937 }
1938
1939 static const struct dev_pm_ops vpif_pm = {
1940         .suspend        = vpif_suspend,
1941         .resume         = vpif_resume,
1942 };
1943
1944 #define vpif_pm_ops (&vpif_pm)
1945 #else
1946 #define vpif_pm_ops NULL
1947 #endif
1948
1949 static __refdata struct platform_driver vpif_driver = {
1950         .driver = {
1951                         .name   = "vpif_display",
1952                         .owner  = THIS_MODULE,
1953                         .pm     = vpif_pm_ops,
1954         },
1955         .probe  = vpif_probe,
1956         .remove = vpif_remove,
1957 };
1958
1959 module_platform_driver(vpif_driver);