kernel/drivers/media/platform/davinci/vpif_capture.c

   1 /*
   2  * Copyright (C) 2009 Texas Instruments Inc
   3  * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  *
  19  * TODO : add support for VBI & HBI data service
  20  *        add static buffer allocation
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/slab.h>
  27
  28 #include <media/v4l2-ioctl.h>
  29
  30 #include "vpif.h"
  31 #include "vpif_capture.h"
  32
  33 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
  34 MODULE_LICENSE("GPL");
  35 MODULE_VERSION(VPIF_CAPTURE_VERSION);
  36
  37 #define vpif_err(fmt, arg...)   v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
  38 #define vpif_dbg(level, debug, fmt, arg...)     \
  39                 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
  40
  41 static int debug = 1;
  42
  43 module_param(debug, int, 0644);
  44
  45 MODULE_PARM_DESC(debug, "Debug level 0-1");
  46
  47 #define VPIF_DRIVER_NAME        "vpif_capture"
  48
  49 /* global variables */
  50 static struct vpif_device vpif_obj = { {NULL} };
  51 static struct device *vpif_dev;
  52 static void vpif_calculate_offsets(struct channel_obj *ch);
  53 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
  54
  55 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
  56
  57 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
  58 static int ycmux_mode;
  59
  60 static inline struct vpif_cap_buffer *to_vpif_buffer(struct vb2_buffer *vb)
  61 {
  62         return container_of(vb, struct vpif_cap_buffer, vb);
  63 }
  64
  65 /**
  66  * vpif_buffer_prepare :  callback function for buffer prepare
  67  * @vb: ptr to vb2_buffer
  68  *
  69  * This is the callback function for buffer prepare when vb2_qbuf()
  70  * function is called. The buffer is prepared and user space virtual address
  71  * or user address is converted into  physical address
  72  */
  73 static int vpif_buffer_prepare(struct vb2_buffer *vb)
  74 {
  75         struct vb2_queue *q = vb->vb2_queue;
  76         struct channel_obj *ch = vb2_get_drv_priv(q);
  77         struct common_obj *common;
  78         unsigned long addr;
  79
  80         vpif_dbg(2, debug, "vpif_buffer_prepare\n");
  81
  82         common = &ch->common[VPIF_VIDEO_INDEX];
  83
  84         vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
  85         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
  86                 return -EINVAL;
  87
  88         vb->v4l2_buf.field = common->fmt.fmt.pix.field;
  89
  90         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
  91         if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
  92                 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
  93                 !IS_ALIGNED((addr + common->ctop_off), 8) ||
  94                 !IS_ALIGNED((addr + common->cbtm_off), 8)) {
  95                 vpif_dbg(1, debug, "offset is not aligned\n");
  96                 return -EINVAL;
  97         }
  98
  99         return 0;
 100 }
 101
 102 /**
 103  * vpif_buffer_queue_setup : Callback function for buffer setup.
 104  * @vq: vb2_queue ptr
 105  * @fmt: v4l2 format
 106  * @nbuffers: ptr to number of buffers requested by application
 107  * @nplanes:: contains number of distinct video planes needed to hold a frame
 108  * @sizes[]: contains the size (in bytes) of each plane.
 109  * @alloc_ctxs: ptr to allocation context
 110  *
 111  * This callback function is called when reqbuf() is called to adjust
 112  * the buffer count and buffer size
 113  */
 114 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
 115                                 const struct v4l2_format *fmt,
 116                                 unsigned int *nbuffers, unsigned int *nplanes,
 117                                 unsigned int sizes[], void *alloc_ctxs[])
 118 {
 119         struct channel_obj *ch = vb2_get_drv_priv(vq);
 120         struct common_obj *common;
 121
 122         common = &ch->common[VPIF_VIDEO_INDEX];
 123
 124         vpif_dbg(2, debug, "vpif_buffer_setup\n");
 125
 126         if (fmt && fmt->fmt.pix.sizeimage < common->fmt.fmt.pix.sizeimage)
 127                 return -EINVAL;
 128
 129         if (vq->num_buffers + *nbuffers < 3)
 130                 *nbuffers = 3 - vq->num_buffers;
 131
 132         *nplanes = 1;
 133         sizes[0] = fmt ? fmt->fmt.pix.sizeimage : common->fmt.fmt.pix.sizeimage;
 134         alloc_ctxs[0] = common->alloc_ctx;
 135
 136         /* Calculate the offset for Y and C data in the buffer */
 137         vpif_calculate_offsets(ch);
 138
 139         return 0;
 140 }
 141
 142 /**
 143  * vpif_buffer_queue : Callback function to add buffer to DMA queue
 144  * @vb: ptr to vb2_buffer
 145  */
 146 static void vpif_buffer_queue(struct vb2_buffer *vb)
 147 {
 148         struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
 149         struct vpif_cap_buffer *buf = to_vpif_buffer(vb);
 150         struct common_obj *common;
 151         unsigned long flags;
 152
 153         common = &ch->common[VPIF_VIDEO_INDEX];
 154
 155         vpif_dbg(2, debug, "vpif_buffer_queue\n");
 156
 157         spin_lock_irqsave(&common->irqlock, flags);
 158         /* add the buffer to the DMA queue */
 159         list_add_tail(&buf->list, &common->dma_queue);
 160         spin_unlock_irqrestore(&common->irqlock, flags);
 161 }
 162
 163 /**
 164  * vpif_start_streaming : Starts the DMA engine for streaming
 165  * @vb: ptr to vb2_buffer
 166  * @count: number of buffers
 167  */
 168 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
 169 {
 170         struct vpif_capture_config *vpif_config_data =
 171                                         vpif_dev->platform_data;
 172         struct channel_obj *ch = vb2_get_drv_priv(vq);
 173         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 174         struct vpif_params *vpif = &ch->vpifparams;
 175         struct vpif_cap_buffer *buf, *tmp;
 176         unsigned long addr, flags;
 177         int ret;
 178
 179         spin_lock_irqsave(&common->irqlock, flags);
 180
 181         /* Initialize field_id */
 182         ch->field_id = 0;
 183
 184         /* configure 1 or 2 channel mode */
 185         if (vpif_config_data->setup_input_channel_mode) {
 186                 ret = vpif_config_data->
 187                         setup_input_channel_mode(vpif->std_info.ycmux_mode);
 188                 if (ret < 0) {
 189                         vpif_dbg(1, debug, "can't set vpif channel mode\n");
 190                         goto err;
 191                 }
 192         }
 193
 194         ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
 195         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 196                 vpif_dbg(1, debug, "stream on failed in subdev\n");
 197                 goto err;
 198         }
 199
 200         /* Call vpif_set_params function to set the parameters and addresses */
 201         ret = vpif_set_video_params(vpif, ch->channel_id);
 202         if (ret < 0) {
 203                 vpif_dbg(1, debug, "can't set video params\n");
 204                 goto err;
 205         }
 206
 207         ycmux_mode = ret;
 208         vpif_config_addr(ch, ret);
 209
 210         /* Get the next frame from the buffer queue */
 211         common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
 212                                     struct vpif_cap_buffer, list);
 213         /* Remove buffer from the buffer queue */
 214         list_del(&common->cur_frm->list);
 215         spin_unlock_irqrestore(&common->irqlock, flags);
 216
 217         addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
 218
 219         common->set_addr(addr + common->ytop_off,
 220                          addr + common->ybtm_off,
 221                          addr + common->ctop_off,
 222                          addr + common->cbtm_off);
 223
 224         /**
 225          * Set interrupt for both the fields in VPIF Register enable channel in
 226          * VPIF register
 227          */
 228         channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
 229         if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
 230                 channel0_intr_assert();
 231                 channel0_intr_enable(1);
 232                 enable_channel0(1);
 233         }
 234         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
 235                 ycmux_mode == 2) {
 236                 channel1_intr_assert();
 237                 channel1_intr_enable(1);
 238                 enable_channel1(1);
 239         }
 240
 241         return 0;
 242
 243 err:
 244         list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
 245                 list_del(&buf->list);
 246                 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
 247         }
 248         spin_unlock_irqrestore(&common->irqlock, flags);
 249
 250         return ret;
 251 }
 252
 253 /**
 254  * vpif_stop_streaming : Stop the DMA engine
 255  * @vq: ptr to vb2_queue
 256  *
 257  * This callback stops the DMA engine and any remaining buffers
 258  * in the DMA queue are released.
 259  */
 260 static void vpif_stop_streaming(struct vb2_queue *vq)
 261 {
 262         struct channel_obj *ch = vb2_get_drv_priv(vq);
 263         struct common_obj *common;
 264         unsigned long flags;
 265         int ret;
 266
 267         common = &ch->common[VPIF_VIDEO_INDEX];
 268
 269         /* Disable channel as per its device type and channel id */
 270         if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
 271                 enable_channel0(0);
 272                 channel0_intr_enable(0);
 273         }
 274         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
 275                 ycmux_mode == 2) {
 276                 enable_channel1(0);
 277                 channel1_intr_enable(0);
 278         }
 279
 280         ycmux_mode = 0;
 281
 282         ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
 283         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
 284                 vpif_dbg(1, debug, "stream off failed in subdev\n");
 285
 286         /* release all active buffers */
 287         spin_lock_irqsave(&common->irqlock, flags);
 288         if (common->cur_frm == common->next_frm) {
 289                 vb2_buffer_done(&common->cur_frm->vb, VB2_BUF_STATE_ERROR);
 290         } else {
 291                 if (common->cur_frm != NULL)
 292                         vb2_buffer_done(&common->cur_frm->vb,
 293                                         VB2_BUF_STATE_ERROR);
 294                 if (common->next_frm != NULL)
 295                         vb2_buffer_done(&common->next_frm->vb,
 296                                         VB2_BUF_STATE_ERROR);
 297         }
 298
 299         while (!list_empty(&common->dma_queue)) {
 300                 common->next_frm = list_entry(common->dma_queue.next,
 301                                                 struct vpif_cap_buffer, list);
 302                 list_del(&common->next_frm->list);
 303                 vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
 304         }
 305         spin_unlock_irqrestore(&common->irqlock, flags);
 306 }
 307
 308 static struct vb2_ops video_qops = {
 309         .queue_setup            = vpif_buffer_queue_setup,
 310         .buf_prepare            = vpif_buffer_prepare,
 311         .start_streaming        = vpif_start_streaming,
 312         .stop_streaming         = vpif_stop_streaming,
 313         .buf_queue              = vpif_buffer_queue,
 314         .wait_prepare           = vb2_ops_wait_prepare,
 315         .wait_finish            = vb2_ops_wait_finish,
 316 };
 317
 318 /**
 319  * vpif_process_buffer_complete: process a completed buffer
 320  * @common: ptr to common channel object
 321  *
 322  * This function time stamp the buffer and mark it as DONE. It also
 323  * wake up any process waiting on the QUEUE and set the next buffer
 324  * as current
 325  */
 326 static void vpif_process_buffer_complete(struct common_obj *common)
 327 {
 328         v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp);
 329         vb2_buffer_done(&common->cur_frm->vb,
 330                                             VB2_BUF_STATE_DONE);
 331         /* Make curFrm pointing to nextFrm */
 332         common->cur_frm = common->next_frm;
 333 }
 334
 335 /**
 336  * vpif_schedule_next_buffer: set next buffer address for capture
 337  * @common : ptr to common channel object
 338  *
 339  * This function will get next buffer from the dma queue and
 340  * set the buffer address in the vpif register for capture.
 341  * the buffer is marked active
 342  */
 343 static void vpif_schedule_next_buffer(struct common_obj *common)
 344 {
 345         unsigned long addr = 0;
 346
 347         spin_lock(&common->irqlock);
 348         common->next_frm = list_entry(common->dma_queue.next,
 349                                      struct vpif_cap_buffer, list);
 350         /* Remove that buffer from the buffer queue */
 351         list_del(&common->next_frm->list);
 352         spin_unlock(&common->irqlock);
 353         addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
 354
 355         /* Set top and bottom field addresses in VPIF registers */
 356         common->set_addr(addr + common->ytop_off,
 357                          addr + common->ybtm_off,
 358                          addr + common->ctop_off,
 359                          addr + common->cbtm_off);
 360 }
 361
 362 /**
 363  * vpif_channel_isr : ISR handler for vpif capture
 364  * @irq: irq number
 365  * @dev_id: dev_id ptr
 366  *
 367  * It changes status of the captured buffer, takes next buffer from the queue
 368  * and sets its address in VPIF registers
 369  */
 370 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
 371 {
 372         struct vpif_device *dev = &vpif_obj;
 373         struct common_obj *common;
 374         struct channel_obj *ch;
 375         int channel_id = 0;
 376         int fid = -1, i;
 377
 378         channel_id = *(int *)(dev_id);
 379         if (!vpif_intr_status(channel_id))
 380                 return IRQ_NONE;
 381
 382         ch = dev->dev[channel_id];
 383
 384         for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
 385                 common = &ch->common[i];
 386                 /* skip If streaming is not started in this channel */
 387                 /* Check the field format */
 388                 if (1 == ch->vpifparams.std_info.frm_fmt) {
 389                         /* Progressive mode */
 390                         spin_lock(&common->irqlock);
 391                         if (list_empty(&common->dma_queue)) {
 392                                 spin_unlock(&common->irqlock);
 393                                 continue;
 394                         }
 395                         spin_unlock(&common->irqlock);
 396
 397                         if (!channel_first_int[i][channel_id])
 398                                 vpif_process_buffer_complete(common);
 399
 400                         channel_first_int[i][channel_id] = 0;
 401
 402                         vpif_schedule_next_buffer(common);
 403
 404
 405                         channel_first_int[i][channel_id] = 0;
 406                 } else {
 407                         /**
 408                          * Interlaced mode. If it is first interrupt, ignore
 409                          * it
 410                          */
 411                         if (channel_first_int[i][channel_id]) {
 412                                 channel_first_int[i][channel_id] = 0;
 413                                 continue;
 414                         }
 415                         if (0 == i) {
 416                                 ch->field_id ^= 1;
 417                                 /* Get field id from VPIF registers */
 418                                 fid = vpif_channel_getfid(ch->channel_id);
 419                                 if (fid != ch->field_id) {
 420                                         /**
 421                                          * If field id does not match stored
 422                                          * field id, make them in sync
 423                                          */
 424                                         if (0 == fid)
 425                                                 ch->field_id = fid;
 426                                         return IRQ_HANDLED;
 427                                 }
 428                         }
 429                         /* device field id and local field id are in sync */
 430                         if (0 == fid) {
 431                                 /* this is even field */
 432                                 if (common->cur_frm == common->next_frm)
 433                                         continue;
 434
 435                                 /* mark the current buffer as done */
 436                                 vpif_process_buffer_complete(common);
 437                         } else if (1 == fid) {
 438                                 /* odd field */
 439                                 spin_lock(&common->irqlock);
 440                                 if (list_empty(&common->dma_queue) ||
 441                                     (common->cur_frm != common->next_frm)) {
 442                                         spin_unlock(&common->irqlock);
 443                                         continue;
 444                                 }
 445                                 spin_unlock(&common->irqlock);
 446
 447                                 vpif_schedule_next_buffer(common);
 448                         }
 449                 }
 450         }
 451         return IRQ_HANDLED;
 452 }
 453
 454 /**
 455  * vpif_update_std_info() - update standard related info
 456  * @ch: ptr to channel object
 457  *
 458  * For a given standard selected by application, update values
 459  * in the device data structures
 460  */
 461 static int vpif_update_std_info(struct channel_obj *ch)
 462 {
 463         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 464         struct vpif_params *vpifparams = &ch->vpifparams;
 465         const struct vpif_channel_config_params *config;
 466         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
 467         struct video_obj *vid_ch = &ch->video;
 468         int index;
 469
 470         vpif_dbg(2, debug, "vpif_update_std_info\n");
 471
 472         for (index = 0; index < vpif_ch_params_count; index++) {
 473                 config = &vpif_ch_params[index];
 474                 if (config->hd_sd == 0) {
 475                         vpif_dbg(2, debug, "SD format\n");
 476                         if (config->stdid & vid_ch->stdid) {
 477                                 memcpy(std_info, config, sizeof(*config));
 478                                 break;
 479                         }
 480                 } else {
 481                         vpif_dbg(2, debug, "HD format\n");
 482                         if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
 483                                 sizeof(vid_ch->dv_timings))) {
 484                                 memcpy(std_info, config, sizeof(*config));
 485                                 break;
 486                         }
 487                 }
 488         }
 489
 490         /* standard not found */
 491         if (index == vpif_ch_params_count)
 492                 return -EINVAL;
 493
 494         common->fmt.fmt.pix.width = std_info->width;
 495         common->width = std_info->width;
 496         common->fmt.fmt.pix.height = std_info->height;
 497         common->height = std_info->height;
 498         common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
 499         common->fmt.fmt.pix.bytesperline = std_info->width;
 500         vpifparams->video_params.hpitch = std_info->width;
 501         vpifparams->video_params.storage_mode = std_info->frm_fmt;
 502
 503         if (vid_ch->stdid)
 504                 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 505         else
 506                 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
 507
 508         if (ch->vpifparams.std_info.frm_fmt)
 509                 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
 510         else
 511                 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
 512
 513         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
 514                 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
 515         else
 516                 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
 517
 518         common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 519
 520         return 0;
 521 }
 522
 523 /**
 524  * vpif_calculate_offsets : This function calculates buffers offsets
 525  * @ch : ptr to channel object
 526  *
 527  * This function calculates buffer offsets for Y and C in the top and
 528  * bottom field
 529  */
 530 static void vpif_calculate_offsets(struct channel_obj *ch)
 531 {
 532         unsigned int hpitch, sizeimage;
 533         struct video_obj *vid_ch = &(ch->video);
 534         struct vpif_params *vpifparams = &ch->vpifparams;
 535         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 536         enum v4l2_field field = common->fmt.fmt.pix.field;
 537
 538         vpif_dbg(2, debug, "vpif_calculate_offsets\n");
 539
 540         if (V4L2_FIELD_ANY == field) {
 541                 if (vpifparams->std_info.frm_fmt)
 542                         vid_ch->buf_field = V4L2_FIELD_NONE;
 543                 else
 544                         vid_ch->buf_field = V4L2_FIELD_INTERLACED;
 545         } else
 546                 vid_ch->buf_field = common->fmt.fmt.pix.field;
 547
 548         sizeimage = common->fmt.fmt.pix.sizeimage;
 549
 550         hpitch = common->fmt.fmt.pix.bytesperline;
 551
 552         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 553             (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
 554                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 555                 common->ytop_off = 0;
 556                 common->ybtm_off = hpitch;
 557                 common->ctop_off = sizeimage / 2;
 558                 common->cbtm_off = sizeimage / 2 + hpitch;
 559         } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
 560                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 561                 common->ytop_off = 0;
 562                 common->ybtm_off = sizeimage / 4;
 563                 common->ctop_off = sizeimage / 2;
 564                 common->cbtm_off = common->ctop_off + sizeimage / 4;
 565         } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
 566                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 567                 common->ybtm_off = 0;
 568                 common->ytop_off = sizeimage / 4;
 569                 common->cbtm_off = sizeimage / 2;
 570                 common->ctop_off = common->cbtm_off + sizeimage / 4;
 571         }
 572         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 573             (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
 574                 vpifparams->video_params.storage_mode = 1;
 575         else
 576                 vpifparams->video_params.storage_mode = 0;
 577
 578         if (1 == vpifparams->std_info.frm_fmt)
 579                 vpifparams->video_params.hpitch =
 580                     common->fmt.fmt.pix.bytesperline;
 581         else {
 582                 if ((field == V4L2_FIELD_ANY)
 583                     || (field == V4L2_FIELD_INTERLACED))
 584                         vpifparams->video_params.hpitch =
 585                             common->fmt.fmt.pix.bytesperline * 2;
 586                 else
 587                         vpifparams->video_params.hpitch =
 588                             common->fmt.fmt.pix.bytesperline;
 589         }
 590
 591         ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
 592 }
 593
 594 /**
 595  * vpif_get_default_field() - Get default field type based on interface
 596  * @vpif_params - ptr to vpif params
 597  */
 598 static inline enum v4l2_field vpif_get_default_field(
 599                                 struct vpif_interface *iface)
 600 {
 601         return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
 602                                                 V4L2_FIELD_INTERLACED;
 603 }
 604
 605 /**
 606  * vpif_config_addr() - function to configure buffer address in vpif
 607  * @ch - channel ptr
 608  * @muxmode - channel mux mode
 609  */
 610 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
 611 {
 612         struct common_obj *common;
 613
 614         vpif_dbg(2, debug, "vpif_config_addr\n");
 615
 616         common = &(ch->common[VPIF_VIDEO_INDEX]);
 617
 618         if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
 619                 common->set_addr = ch1_set_videobuf_addr;
 620         else if (2 == muxmode)
 621                 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
 622         else
 623                 common->set_addr = ch0_set_videobuf_addr;
 624 }
 625
 626 /**
 627  * vpif_input_to_subdev() - Maps input to sub device
 628  * @vpif_cfg - global config ptr
 629  * @chan_cfg - channel config ptr
 630  * @input_index - Given input index from application
 631  *
 632  * lookup the sub device information for a given input index.
 633  * we report all the inputs to application. inputs table also
 634  * has sub device name for the each input
 635  */
 636 static int vpif_input_to_subdev(
 637                 struct vpif_capture_config *vpif_cfg,
 638                 struct vpif_capture_chan_config *chan_cfg,
 639                 int input_index)
 640 {
 641         struct vpif_subdev_info *subdev_info;
 642         const char *subdev_name;
 643         int i;
 644
 645         vpif_dbg(2, debug, "vpif_input_to_subdev\n");
 646
 647         subdev_name = chan_cfg->inputs[input_index].subdev_name;
 648         if (subdev_name == NULL)
 649                 return -1;
 650
 651         /* loop through the sub device list to get the sub device info */
 652         for (i = 0; i < vpif_cfg->subdev_count; i++) {
 653                 subdev_info = &vpif_cfg->subdev_info[i];
 654                 if (!strcmp(subdev_info->name, subdev_name))
 655                         return i;
 656         }
 657         return -1;
 658 }
 659
 660 /**
 661  * vpif_set_input() - Select an input
 662  * @vpif_cfg - global config ptr
 663  * @ch - channel
 664  * @_index - Given input index from application
 665  *
 666  * Select the given input.
 667  */
 668 static int vpif_set_input(
 669                 struct vpif_capture_config *vpif_cfg,
 670                 struct channel_obj *ch,
 671                 int index)
 672 {
 673         struct vpif_capture_chan_config *chan_cfg =
 674                         &vpif_cfg->chan_config[ch->channel_id];
 675         struct vpif_subdev_info *subdev_info = NULL;
 676         struct v4l2_subdev *sd = NULL;
 677         u32 input = 0, output = 0;
 678         int sd_index;
 679         int ret;
 680
 681         sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
 682         if (sd_index >= 0) {
 683                 sd = vpif_obj.sd[sd_index];
 684                 subdev_info = &vpif_cfg->subdev_info[sd_index];
 685         }
 686
 687         /* first setup input path from sub device to vpif */
 688         if (sd && vpif_cfg->setup_input_path) {
 689                 ret = vpif_cfg->setup_input_path(ch->channel_id,
 690                                        subdev_info->name);
 691                 if (ret < 0) {
 692                         vpif_dbg(1, debug, "couldn't setup input path for the" \
 693                         " sub device %s, for input index %d\n",
 694                         subdev_info->name, index);
 695                         return ret;
 696                 }
 697         }
 698
 699         if (sd) {
 700                 input = chan_cfg->inputs[index].input_route;
 701                 output = chan_cfg->inputs[index].output_route;
 702                 ret = v4l2_subdev_call(sd, video, s_routing,
 703                                 input, output, 0);
 704                 if (ret < 0 && ret != -ENOIOCTLCMD) {
 705                         vpif_dbg(1, debug, "Failed to set input\n");
 706                         return ret;
 707                 }
 708         }
 709         ch->input_idx = index;
 710         ch->sd = sd;
 711         /* copy interface parameters to vpif */
 712         ch->vpifparams.iface = chan_cfg->vpif_if;
 713
 714         /* update tvnorms from the sub device input info */
 715         ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
 716         return 0;
 717 }
 718
 719 /**
 720  * vpif_querystd() - querystd handler
 721  * @file: file ptr
 722  * @priv: file handle
 723  * @std_id: ptr to std id
 724  *
 725  * This function is called to detect standard at the selected input
 726  */
 727 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
 728 {
 729         struct video_device *vdev = video_devdata(file);
 730         struct channel_obj *ch = video_get_drvdata(vdev);
 731         int ret = 0;
 732
 733         vpif_dbg(2, debug, "vpif_querystd\n");
 734
 735         /* Call querystd function of decoder device */
 736         ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
 737
 738         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
 739                 return -ENODATA;
 740         if (ret) {
 741                 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
 742                 return ret;
 743         }
 744
 745         return 0;
 746 }
 747
 748 /**
 749  * vpif_g_std() - get STD handler
 750  * @file: file ptr
 751  * @priv: file handle
 752  * @std_id: ptr to std id
 753  */
 754 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
 755 {
 756         struct vpif_capture_config *config = vpif_dev->platform_data;
 757         struct video_device *vdev = video_devdata(file);
 758         struct channel_obj *ch = video_get_drvdata(vdev);
 759         struct vpif_capture_chan_config *chan_cfg;
 760         struct v4l2_input input;
 761
 762         vpif_dbg(2, debug, "vpif_g_std\n");
 763
 764         if (config->chan_config[ch->channel_id].inputs == NULL)
 765                 return -ENODATA;
 766
 767         chan_cfg = &config->chan_config[ch->channel_id];
 768         input = chan_cfg->inputs[ch->input_idx].input;
 769         if (input.capabilities != V4L2_IN_CAP_STD)
 770                 return -ENODATA;
 771
 772         *std = ch->video.stdid;
 773         return 0;
 774 }
 775
 776 /**
 777  * vpif_s_std() - set STD handler
 778  * @file: file ptr
 779  * @priv: file handle
 780  * @std_id: ptr to std id
 781  */
 782 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
 783 {
 784         struct vpif_capture_config *config = vpif_dev->platform_data;
 785         struct video_device *vdev = video_devdata(file);
 786         struct channel_obj *ch = video_get_drvdata(vdev);
 787         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 788         struct vpif_capture_chan_config *chan_cfg;
 789         struct v4l2_input input;
 790         int ret;
 791
 792         vpif_dbg(2, debug, "vpif_s_std\n");
 793
 794         if (config->chan_config[ch->channel_id].inputs == NULL)
 795                 return -ENODATA;
 796
 797         chan_cfg = &config->chan_config[ch->channel_id];
 798         input = chan_cfg->inputs[ch->input_idx].input;
 799         if (input.capabilities != V4L2_IN_CAP_STD)
 800                 return -ENODATA;
 801
 802         if (vb2_is_busy(&common->buffer_queue))
 803                 return -EBUSY;
 804
 805         /* Call encoder subdevice function to set the standard */
 806         ch->video.stdid = std_id;
 807         memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
 808
 809         /* Get the information about the standard */
 810         if (vpif_update_std_info(ch)) {
 811                 vpif_err("Error getting the standard info\n");
 812                 return -EINVAL;
 813         }
 814
 815         /* set standard in the sub device */
 816         ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
 817         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 818                 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
 819                 return ret;
 820         }
 821         return 0;
 822 }
 823
 824 /**
 825  * vpif_enum_input() - ENUMINPUT handler
 826  * @file: file ptr
 827  * @priv: file handle
 828  * @input: ptr to input structure
 829  */
 830 static int vpif_enum_input(struct file *file, void *priv,
 831                                 struct v4l2_input *input)
 832 {
 833
 834         struct vpif_capture_config *config = vpif_dev->platform_data;
 835         struct video_device *vdev = video_devdata(file);
 836         struct channel_obj *ch = video_get_drvdata(vdev);
 837         struct vpif_capture_chan_config *chan_cfg;
 838
 839         chan_cfg = &config->chan_config[ch->channel_id];
 840
 841         if (input->index >= chan_cfg->input_count)
 842                 return -EINVAL;
 843
 844         memcpy(input, &chan_cfg->inputs[input->index].input,
 845                 sizeof(*input));
 846         return 0;
 847 }
 848
 849 /**
 850  * vpif_g_input() - Get INPUT handler
 851  * @file: file ptr
 852  * @priv: file handle
 853  * @index: ptr to input index
 854  */
 855 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
 856 {
 857         struct video_device *vdev = video_devdata(file);
 858         struct channel_obj *ch = video_get_drvdata(vdev);
 859
 860         *index = ch->input_idx;
 861         return 0;
 862 }
 863
 864 /**
 865  * vpif_s_input() - Set INPUT handler
 866  * @file: file ptr
 867  * @priv: file handle
 868  * @index: input index
 869  */
 870 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
 871 {
 872         struct vpif_capture_config *config = vpif_dev->platform_data;
 873         struct video_device *vdev = video_devdata(file);
 874         struct channel_obj *ch = video_get_drvdata(vdev);
 875         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 876         struct vpif_capture_chan_config *chan_cfg;
 877
 878         chan_cfg = &config->chan_config[ch->channel_id];
 879
 880         if (index >= chan_cfg->input_count)
 881                 return -EINVAL;
 882
 883         if (vb2_is_busy(&common->buffer_queue))
 884                 return -EBUSY;
 885
 886         return vpif_set_input(config, ch, index);
 887 }
 888
 889 /**
 890  * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
 891  * @file: file ptr
 892  * @priv: file handle
 893  * @index: input index
 894  */
 895 static int vpif_enum_fmt_vid_cap(struct file *file, void  *priv,
 896                                         struct v4l2_fmtdesc *fmt)
 897 {
 898         struct video_device *vdev = video_devdata(file);
 899         struct channel_obj *ch = video_get_drvdata(vdev);
 900
 901         if (fmt->index != 0) {
 902                 vpif_dbg(1, debug, "Invalid format index\n");
 903                 return -EINVAL;
 904         }
 905
 906         /* Fill in the information about format */
 907         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
 908                 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 909                 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
 910                 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
 911         } else {
 912                 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 913                 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
 914                 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
 915         }
 916         return 0;
 917 }
 918
 919 /**
 920  * vpif_try_fmt_vid_cap() - TRY_FMT handler
 921  * @file: file ptr
 922  * @priv: file handle
 923  * @fmt: ptr to v4l2 format structure
 924  */
 925 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
 926                                 struct v4l2_format *fmt)
 927 {
 928         struct video_device *vdev = video_devdata(file);
 929         struct channel_obj *ch = video_get_drvdata(vdev);
 930         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 931         struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
 932         struct vpif_params *vpif_params = &ch->vpifparams;
 933
 934         /*
 935          * to supress v4l-compliance warnings silently correct
 936          * the pixelformat
 937          */
 938         if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
 939                 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8)
 940                         pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
 941         } else {
 942                 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
 943                         pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
 944         }
 945
 946         common->fmt.fmt.pix.pixelformat = pixfmt->pixelformat;
 947
 948         vpif_update_std_info(ch);
 949
 950         pixfmt->field = common->fmt.fmt.pix.field;
 951         pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
 952         pixfmt->bytesperline = common->fmt.fmt.pix.width;
 953         pixfmt->width = common->fmt.fmt.pix.width;
 954         pixfmt->height = common->fmt.fmt.pix.height;
 955         pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
 956         pixfmt->priv = 0;
 957
 958         return 0;
 959 }
 960
 961
 962 /**
 963  * vpif_g_fmt_vid_cap() - Set INPUT handler
 964  * @file: file ptr
 965  * @priv: file handle
 966  * @fmt: ptr to v4l2 format structure
 967  */
 968 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
 969                                 struct v4l2_format *fmt)
 970 {
 971         struct video_device *vdev = video_devdata(file);
 972         struct channel_obj *ch = video_get_drvdata(vdev);
 973         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 974
 975         /* Check the validity of the buffer type */
 976         if (common->fmt.type != fmt->type)
 977                 return -EINVAL;
 978
 979         /* Fill in the information about format */
 980         *fmt = common->fmt;
 981         return 0;
 982 }
 983
 984 /**
 985  * vpif_s_fmt_vid_cap() - Set FMT handler
 986  * @file: file ptr
 987  * @priv: file handle
 988  * @fmt: ptr to v4l2 format structure
 989  */
 990 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
 991                                 struct v4l2_format *fmt)
 992 {
 993         struct video_device *vdev = video_devdata(file);
 994         struct channel_obj *ch = video_get_drvdata(vdev);
 995         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 996         int ret;
 997
 998         vpif_dbg(2, debug, "%s\n", __func__);
 999
1000         if (vb2_is_busy(&common->buffer_queue))
1001                 return -EBUSY;
1002
1003         ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1004         if (ret)
1005                 return ret;
1006
1007         /* store the format in the channel object */
1008         common->fmt = *fmt;
1009         return 0;
1010 }
1011
1012 /**
1013  * vpif_querycap() - QUERYCAP handler
1014  * @file: file ptr
1015  * @priv: file handle
1016  * @cap: ptr to v4l2_capability structure
1017  */
1018 static int vpif_querycap(struct file *file, void  *priv,
1019                                 struct v4l2_capability *cap)
1020 {
1021         struct vpif_capture_config *config = vpif_dev->platform_data;
1022
1023         cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1024         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1025         strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1026         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1027                  dev_name(vpif_dev));
1028         strlcpy(cap->card, config->card_name, sizeof(cap->card));
1029
1030         return 0;
1031 }
1032
1033 /**
1034  * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1035  * @file: file ptr
1036  * @priv: file handle
1037  * @timings: input timings
1038  */
1039 static int
1040 vpif_enum_dv_timings(struct file *file, void *priv,
1041                      struct v4l2_enum_dv_timings *timings)
1042 {
1043         struct vpif_capture_config *config = vpif_dev->platform_data;
1044         struct video_device *vdev = video_devdata(file);
1045         struct channel_obj *ch = video_get_drvdata(vdev);
1046         struct vpif_capture_chan_config *chan_cfg;
1047         struct v4l2_input input;
1048         int ret;
1049
1050         if (config->chan_config[ch->channel_id].inputs == NULL)
1051                 return -ENODATA;
1052
1053         chan_cfg = &config->chan_config[ch->channel_id];
1054         input = chan_cfg->inputs[ch->input_idx].input;
1055         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1056                 return -ENODATA;
1057
1058         timings->pad = 0;
1059
1060         ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1061         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1062                 return -EINVAL;
1063
1064         return ret;
1065 }
1066
1067 /**
1068  * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1069  * @file: file ptr
1070  * @priv: file handle
1071  * @timings: input timings
1072  */
1073 static int
1074 vpif_query_dv_timings(struct file *file, void *priv,
1075                       struct v4l2_dv_timings *timings)
1076 {
1077         struct vpif_capture_config *config = vpif_dev->platform_data;
1078         struct video_device *vdev = video_devdata(file);
1079         struct channel_obj *ch = video_get_drvdata(vdev);
1080         struct vpif_capture_chan_config *chan_cfg;
1081         struct v4l2_input input;
1082         int ret;
1083
1084         if (config->chan_config[ch->channel_id].inputs == NULL)
1085                 return -ENODATA;
1086
1087         chan_cfg = &config->chan_config[ch->channel_id];
1088         input = chan_cfg->inputs[ch->input_idx].input;
1089         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1090                 return -ENODATA;
1091
1092         ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1093         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1094                 return -ENODATA;
1095
1096         return ret;
1097 }
1098
1099 /**
1100  * vpif_s_dv_timings() - S_DV_TIMINGS handler
1101  * @file: file ptr
1102  * @priv: file handle
1103  * @timings: digital video timings
1104  */
1105 static int vpif_s_dv_timings(struct file *file, void *priv,
1106                 struct v4l2_dv_timings *timings)
1107 {
1108         struct vpif_capture_config *config = vpif_dev->platform_data;
1109         struct video_device *vdev = video_devdata(file);
1110         struct channel_obj *ch = video_get_drvdata(vdev);
1111         struct vpif_params *vpifparams = &ch->vpifparams;
1112         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1113         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1114         struct video_obj *vid_ch = &ch->video;
1115         struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1116         struct vpif_capture_chan_config *chan_cfg;
1117         struct v4l2_input input;
1118         int ret;
1119
1120         if (config->chan_config[ch->channel_id].inputs == NULL)
1121                 return -ENODATA;
1122
1123         chan_cfg = &config->chan_config[ch->channel_id];
1124         input = chan_cfg->inputs[ch->input_idx].input;
1125         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1126                 return -ENODATA;
1127
1128         if (timings->type != V4L2_DV_BT_656_1120) {
1129                 vpif_dbg(2, debug, "Timing type not defined\n");
1130                 return -EINVAL;
1131         }
1132
1133         if (vb2_is_busy(&common->buffer_queue))
1134                 return -EBUSY;
1135
1136         /* Configure subdevice timings, if any */
1137         ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1138         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1139                 ret = 0;
1140         if (ret < 0) {
1141                 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1142                 return ret;
1143         }
1144
1145         if (!(timings->bt.width && timings->bt.height &&
1146                                 (timings->bt.hbackporch ||
1147                                  timings->bt.hfrontporch ||
1148                                  timings->bt.hsync) &&
1149                                 timings->bt.vfrontporch &&
1150                                 (timings->bt.vbackporch ||
1151                                  timings->bt.vsync))) {
1152                 vpif_dbg(2, debug, "Timings for width, height, "
1153                                 "horizontal back porch, horizontal sync, "
1154                                 "horizontal front porch, vertical back porch, "
1155                                 "vertical sync and vertical back porch "
1156                                 "must be defined\n");
1157                 return -EINVAL;
1158         }
1159
1160         vid_ch->dv_timings = *timings;
1161
1162         /* Configure video port timings */
1163
1164         std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1165         std_info->sav2eav = bt->width;
1166
1167         std_info->l1 = 1;
1168         std_info->l3 = bt->vsync + bt->vbackporch + 1;
1169
1170         std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1171         if (bt->interlaced) {
1172                 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1173                         std_info->l5 = std_info->vsize/2 -
1174                                 (bt->vfrontporch - 1);
1175                         std_info->l7 = std_info->vsize/2 + 1;
1176                         std_info->l9 = std_info->l7 + bt->il_vsync +
1177                                 bt->il_vbackporch + 1;
1178                         std_info->l11 = std_info->vsize -
1179                                 (bt->il_vfrontporch - 1);
1180                 } else {
1181                         vpif_dbg(2, debug, "Required timing values for "
1182                                         "interlaced BT format missing\n");
1183                         return -EINVAL;
1184                 }
1185         } else {
1186                 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1187         }
1188         strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1189         std_info->width = bt->width;
1190         std_info->height = bt->height;
1191         std_info->frm_fmt = bt->interlaced ? 0 : 1;
1192         std_info->ycmux_mode = 0;
1193         std_info->capture_format = 0;
1194         std_info->vbi_supported = 0;
1195         std_info->hd_sd = 1;
1196         std_info->stdid = 0;
1197
1198         vid_ch->stdid = 0;
1199         return 0;
1200 }
1201
1202 /**
1203  * vpif_g_dv_timings() - G_DV_TIMINGS handler
1204  * @file: file ptr
1205  * @priv: file handle
1206  * @timings: digital video timings
1207  */
1208 static int vpif_g_dv_timings(struct file *file, void *priv,
1209                 struct v4l2_dv_timings *timings)
1210 {
1211         struct vpif_capture_config *config = vpif_dev->platform_data;
1212         struct video_device *vdev = video_devdata(file);
1213         struct channel_obj *ch = video_get_drvdata(vdev);
1214         struct video_obj *vid_ch = &ch->video;
1215         struct vpif_capture_chan_config *chan_cfg;
1216         struct v4l2_input input;
1217
1218         if (config->chan_config[ch->channel_id].inputs == NULL)
1219                 return -ENODATA;
1220
1221         chan_cfg = &config->chan_config[ch->channel_id];
1222         input = chan_cfg->inputs[ch->input_idx].input;
1223         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1224                 return -ENODATA;
1225
1226         *timings = vid_ch->dv_timings;
1227
1228         return 0;
1229 }
1230
1231 /*
1232  * vpif_log_status() - Status information
1233  * @file: file ptr
1234  * @priv: file handle
1235  *
1236  * Returns zero.
1237  */
1238 static int vpif_log_status(struct file *filep, void *priv)
1239 {
1240         /* status for sub devices */
1241         v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1242
1243         return 0;
1244 }
1245
1246 /* vpif capture ioctl operations */
1247 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1248         .vidioc_querycap                = vpif_querycap,
1249         .vidioc_enum_fmt_vid_cap        = vpif_enum_fmt_vid_cap,
1250         .vidioc_g_fmt_vid_cap           = vpif_g_fmt_vid_cap,
1251         .vidioc_s_fmt_vid_cap           = vpif_s_fmt_vid_cap,
1252         .vidioc_try_fmt_vid_cap         = vpif_try_fmt_vid_cap,
1253
1254         .vidioc_enum_input              = vpif_enum_input,
1255         .vidioc_s_input                 = vpif_s_input,
1256         .vidioc_g_input                 = vpif_g_input,
1257
1258         .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
1259         .vidioc_create_bufs             = vb2_ioctl_create_bufs,
1260         .vidioc_querybuf                = vb2_ioctl_querybuf,
1261         .vidioc_qbuf                    = vb2_ioctl_qbuf,
1262         .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
1263         .vidioc_expbuf                  = vb2_ioctl_expbuf,
1264         .vidioc_streamon                = vb2_ioctl_streamon,
1265         .vidioc_streamoff               = vb2_ioctl_streamoff,
1266
1267         .vidioc_querystd                = vpif_querystd,
1268         .vidioc_s_std                   = vpif_s_std,
1269         .vidioc_g_std                   = vpif_g_std,
1270
1271         .vidioc_enum_dv_timings         = vpif_enum_dv_timings,
1272         .vidioc_query_dv_timings        = vpif_query_dv_timings,
1273         .vidioc_s_dv_timings            = vpif_s_dv_timings,
1274         .vidioc_g_dv_timings            = vpif_g_dv_timings,
1275
1276         .vidioc_log_status              = vpif_log_status,
1277 };
1278
1279 /* vpif file operations */
1280 static struct v4l2_file_operations vpif_fops = {
1281         .owner = THIS_MODULE,
1282         .open = v4l2_fh_open,
1283         .release = vb2_fop_release,
1284         .unlocked_ioctl = video_ioctl2,
1285         .mmap = vb2_fop_mmap,
1286         .poll = vb2_fop_poll
1287 };
1288
1289 /**
1290  * initialize_vpif() - Initialize vpif data structures
1291  *
1292  * Allocate memory for data structures and initialize them
1293  */
1294 static int initialize_vpif(void)
1295 {
1296         int err, i, j;
1297         int free_channel_objects_index;
1298
1299         /* Allocate memory for six channel objects */
1300         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1301                 vpif_obj.dev[i] =
1302                     kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1303                 /* If memory allocation fails, return error */
1304                 if (!vpif_obj.dev[i]) {
1305                         free_channel_objects_index = i;
1306                         err = -ENOMEM;
1307                         goto vpif_init_free_channel_objects;
1308                 }
1309         }
1310         return 0;
1311
1312 vpif_init_free_channel_objects:
1313         for (j = 0; j < free_channel_objects_index; j++)
1314                 kfree(vpif_obj.dev[j]);
1315         return err;
1316 }
1317
1318 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1319                             struct v4l2_subdev *subdev,
1320                             struct v4l2_async_subdev *asd)
1321 {
1322         int i;
1323
1324         for (i = 0; i < vpif_obj.config->subdev_count; i++)
1325                 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1326                             subdev->name)) {
1327                         vpif_obj.sd[i] = subdev;
1328                         return 0;
1329                 }
1330
1331         return -EINVAL;
1332 }
1333
1334 static int vpif_probe_complete(void)
1335 {
1336         struct common_obj *common;
1337         struct video_device *vdev;
1338         struct channel_obj *ch;
1339         struct vb2_queue *q;
1340         int j, err, k;
1341
1342         for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1343                 ch = vpif_obj.dev[j];
1344                 ch->channel_id = j;
1345                 common = &(ch->common[VPIF_VIDEO_INDEX]);
1346                 spin_lock_init(&common->irqlock);
1347                 mutex_init(&common->lock);
1348
1349                 /* select input 0 */
1350                 err = vpif_set_input(vpif_obj.config, ch, 0);
1351                 if (err)
1352                         goto probe_out;
1353
1354                 /* set initial format */
1355                 ch->video.stdid = V4L2_STD_525_60;
1356                 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1357                 vpif_update_std_info(ch);
1358
1359                 /* Initialize vb2 queue */
1360                 q = &common->buffer_queue;
1361                 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1362                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1363                 q->drv_priv = ch;
1364                 q->ops = &video_qops;
1365                 q->mem_ops = &vb2_dma_contig_memops;
1366                 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1367                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1368                 q->min_buffers_needed = 1;
1369                 q->lock = &common->lock;
1370
1371                 err = vb2_queue_init(q);
1372                 if (err) {
1373                         vpif_err("vpif_capture: vb2_queue_init() failed\n");
1374                         goto probe_out;
1375                 }
1376
1377                 common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
1378                 if (IS_ERR(common->alloc_ctx)) {
1379                         vpif_err("Failed to get the context\n");
1380                         err = PTR_ERR(common->alloc_ctx);
1381                         goto probe_out;
1382                 }
1383
1384                 INIT_LIST_HEAD(&common->dma_queue);
1385
1386                 /* Initialize the video_device structure */
1387                 vdev = &ch->video_dev;
1388                 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1389                 vdev->release = video_device_release_empty;
1390                 vdev->fops = &vpif_fops;
1391                 vdev->ioctl_ops = &vpif_ioctl_ops;
1392                 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1393                 vdev->vfl_dir = VFL_DIR_RX;
1394                 vdev->queue = q;
1395                 vdev->lock = &common->lock;
1396                 video_set_drvdata(&ch->video_dev, ch);
1397                 err = video_register_device(vdev,
1398                                             VFL_TYPE_GRABBER, (j ? 1 : 0));
1399                 if (err)
1400                         goto probe_out;
1401         }
1402
1403         v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1404         return 0;
1405
1406 probe_out:
1407         for (k = 0; k < j; k++) {
1408                 /* Get the pointer to the channel object */
1409                 ch = vpif_obj.dev[k];
1410                 common = &ch->common[k];
1411                 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1412                 /* Unregister video device */
1413                 video_unregister_device(&ch->video_dev);
1414         }
1415         kfree(vpif_obj.sd);
1416         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1417
1418         return err;
1419 }
1420
1421 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1422 {
1423         return vpif_probe_complete();
1424 }
1425
1426 /**
1427  * vpif_probe : This function probes the vpif capture driver
1428  * @pdev: platform device pointer
1429  *
1430  * This creates device entries by register itself to the V4L2 driver and
1431  * initializes fields of each channel objects
1432  */
1433 static __init int vpif_probe(struct platform_device *pdev)
1434 {
1435         struct vpif_subdev_info *subdevdata;
1436         struct i2c_adapter *i2c_adap;
1437         struct resource *res;
1438         int subdev_count;
1439         int res_idx = 0;
1440         int i, err;
1441
1442         vpif_dev = &pdev->dev;
1443
1444         err = initialize_vpif();
1445         if (err) {
1446                 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1447                 return err;
1448         }
1449
1450         err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1451         if (err) {
1452                 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1453                 return err;
1454         }
1455
1456         while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1457                 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1458                                         IRQF_SHARED, VPIF_DRIVER_NAME,
1459                                         (void *)(&vpif_obj.dev[res_idx]->
1460                                         channel_id));
1461                 if (err) {
1462                         err = -EINVAL;
1463                         goto vpif_unregister;
1464                 }
1465                 res_idx++;
1466         }
1467
1468         vpif_obj.config = pdev->dev.platform_data;
1469
1470         subdev_count = vpif_obj.config->subdev_count;
1471         vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1472                                 GFP_KERNEL);
1473         if (vpif_obj.sd == NULL) {
1474                 vpif_err("unable to allocate memory for subdevice pointers\n");
1475                 err = -ENOMEM;
1476                 goto vpif_unregister;
1477         }
1478
1479         if (!vpif_obj.config->asd_sizes) {
1480                 i2c_adap = i2c_get_adapter(1);
1481                 for (i = 0; i < subdev_count; i++) {
1482                         subdevdata = &vpif_obj.config->subdev_info[i];
1483                         vpif_obj.sd[i] =
1484                                 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1485                                                           i2c_adap,
1486                                                           &subdevdata->
1487                                                           board_info,
1488                                                           NULL);
1489
1490                         if (!vpif_obj.sd[i]) {
1491                                 vpif_err("Error registering v4l2 subdevice\n");
1492                                 err = -ENODEV;
1493                                 goto probe_subdev_out;
1494                         }
1495                         v4l2_info(&vpif_obj.v4l2_dev,
1496                                   "registered sub device %s\n",
1497                                    subdevdata->name);
1498                 }
1499                 vpif_probe_complete();
1500         } else {
1501                 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1502                 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1503                 vpif_obj.notifier.bound = vpif_async_bound;
1504                 vpif_obj.notifier.complete = vpif_async_complete;
1505                 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1506                                                    &vpif_obj.notifier);
1507                 if (err) {
1508                         vpif_err("Error registering async notifier\n");
1509                         err = -EINVAL;
1510                         goto probe_subdev_out;
1511                 }
1512         }
1513
1514         return 0;
1515
1516 probe_subdev_out:
1517         /* free sub devices memory */
1518         kfree(vpif_obj.sd);
1519 vpif_unregister:
1520         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1521
1522         return err;
1523 }
1524
1525 /**
1526  * vpif_remove() - driver remove handler
1527  * @device: ptr to platform device structure
1528  *
1529  * The vidoe device is unregistered
1530  */
1531 static int vpif_remove(struct platform_device *device)
1532 {
1533         struct common_obj *common;
1534         struct channel_obj *ch;
1535         int i;
1536
1537         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1538
1539         kfree(vpif_obj.sd);
1540         /* un-register device */
1541         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1542                 /* Get the pointer to the channel object */
1543                 ch = vpif_obj.dev[i];
1544                 common = &ch->common[VPIF_VIDEO_INDEX];
1545                 vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
1546                 /* Unregister video device */
1547                 video_unregister_device(&ch->video_dev);
1548                 kfree(vpif_obj.dev[i]);
1549         }
1550         return 0;
1551 }
1552
1553 #ifdef CONFIG_PM_SLEEP
1554 /**
1555  * vpif_suspend: vpif device suspend
1556  */
1557 static int vpif_suspend(struct device *dev)
1558 {
1559
1560         struct common_obj *common;
1561         struct channel_obj *ch;
1562         int i;
1563
1564         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1565                 /* Get the pointer to the channel object */
1566                 ch = vpif_obj.dev[i];
1567                 common = &ch->common[VPIF_VIDEO_INDEX];
1568
1569                 if (!vb2_start_streaming_called(&common->buffer_queue))
1570                         continue;
1571
1572                 mutex_lock(&common->lock);
1573                 /* Disable channel */
1574                 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1575                         enable_channel0(0);
1576                         channel0_intr_enable(0);
1577                 }
1578                 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1579                         ycmux_mode == 2) {
1580                         enable_channel1(0);
1581                         channel1_intr_enable(0);
1582                 }
1583                 mutex_unlock(&common->lock);
1584         }
1585
1586         return 0;
1587 }
1588
1589 /*
1590  * vpif_resume: vpif device suspend
1591  */
1592 static int vpif_resume(struct device *dev)
1593 {
1594         struct common_obj *common;
1595         struct channel_obj *ch;
1596         int i;
1597
1598         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1599                 /* Get the pointer to the channel object */
1600                 ch = vpif_obj.dev[i];
1601                 common = &ch->common[VPIF_VIDEO_INDEX];
1602
1603                 if (!vb2_start_streaming_called(&common->buffer_queue))
1604                         continue;
1605
1606                 mutex_lock(&common->lock);
1607                 /* Enable channel */
1608                 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1609                         enable_channel0(1);
1610                         channel0_intr_enable(1);
1611                 }
1612                 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1613                         ycmux_mode == 2) {
1614                         enable_channel1(1);
1615                         channel1_intr_enable(1);
1616                 }
1617                 mutex_unlock(&common->lock);
1618         }
1619
1620         return 0;
1621 }
1622 #endif
1623
1624 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1625
1626 static __refdata struct platform_driver vpif_driver = {
1627         .driver = {
1628                 .name   = VPIF_DRIVER_NAME,
1629                 .pm     = &vpif_pm_ops,
1630         },
1631         .probe = vpif_probe,
1632         .remove = vpif_remove,
1633 };
1634
1635 module_platform_driver(vpif_driver);