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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (C) 2009 Texas Instruments Inc
   4  * Copyright (C) 2014 Lad, Prabhakar <[email protected]>
   5  *
   6  * TODO : add support for VBI & HBI data service
   7  *        add static buffer allocation
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/of_graph.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/slab.h>
  15
  16 #include <media/v4l2-fwnode.h>
  17 #include <media/v4l2-ioctl.h>
  18 #include <media/i2c/tvp514x.h>
  19 #include <media/v4l2-mediabus.h>
  20
  21 #include <linux/videodev2.h>
  22
  23 #include "vpif.h"
  24 #include "vpif_capture.h"
  25
  26 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
  27 MODULE_LICENSE("GPL");
  28 MODULE_VERSION(VPIF_CAPTURE_VERSION);
  29
  30 #define vpif_err(fmt, arg...)   v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
  31 #define vpif_dbg(level, debug, fmt, arg...)     \
  32                 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
  33
  34 static int debug = 1;
  35
  36 module_param(debug, int, 0644);
  37
  38 MODULE_PARM_DESC(debug, "Debug level 0-1");
  39
  40 #define VPIF_DRIVER_NAME        "vpif_capture"
  41 MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
  42
  43 /* global variables */
  44 static struct vpif_device vpif_obj = { {NULL} };
  45 static struct device *vpif_dev;
  46 static void vpif_calculate_offsets(struct channel_obj *ch);
  47 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
  48
  49 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
  50
  51 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
  52 static int ycmux_mode;
  53
  54 static inline
  55 struct vpif_cap_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
  56 {
  57         return container_of(vb, struct vpif_cap_buffer, vb);
  58 }
  59
  60 /**
  61  * vpif_buffer_prepare :  callback function for buffer prepare
  62  * @vb: ptr to vb2_buffer
  63  *
  64  * This is the callback function for buffer prepare when vb2_qbuf()
  65  * function is called. The buffer is prepared and user space virtual address
  66  * or user address is converted into  physical address
  67  */
  68 static int vpif_buffer_prepare(struct vb2_buffer *vb)
  69 {
  70         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
  71         struct vb2_queue *q = vb->vb2_queue;
  72         struct channel_obj *ch = vb2_get_drv_priv(q);
  73         struct common_obj *common;
  74         unsigned long addr;
  75
  76         vpif_dbg(2, debug, "vpif_buffer_prepare\n");
  77
  78         common = &ch->common[VPIF_VIDEO_INDEX];
  79
  80         vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
  81         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
  82                 return -EINVAL;
  83
  84         vbuf->field = common->fmt.fmt.pix.field;
  85
  86         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
  87         if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
  88                 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
  89                 !IS_ALIGNED((addr + common->ctop_off), 8) ||
  90                 !IS_ALIGNED((addr + common->cbtm_off), 8)) {
  91                 vpif_dbg(1, debug, "offset is not aligned\n");
  92                 return -EINVAL;
  93         }
  94
  95         return 0;
  96 }
  97
  98 /**
  99  * vpif_buffer_queue_setup : Callback function for buffer setup.
 100  * @vq: vb2_queue ptr
 101  * @nbuffers: ptr to number of buffers requested by application
 102  * @nplanes: contains number of distinct video planes needed to hold a frame
 103  * @sizes: contains the size (in bytes) of each plane.
 104  * @alloc_devs: ptr to allocation context
 105  *
 106  * This callback function is called when reqbuf() is called to adjust
 107  * the buffer count and buffer size
 108  */
 109 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
 110                                 unsigned int *nbuffers, unsigned int *nplanes,
 111                                 unsigned int sizes[], struct device *alloc_devs[])
 112 {
 113         struct channel_obj *ch = vb2_get_drv_priv(vq);
 114         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 115         unsigned size = common->fmt.fmt.pix.sizeimage;
 116         unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 117
 118         vpif_dbg(2, debug, "vpif_buffer_setup\n");
 119
 120         if (*nplanes) {
 121                 if (sizes[0] < size)
 122                         return -EINVAL;
 123                 size = sizes[0];
 124         }
 125
 126         if (q_num_bufs + *nbuffers < 3)
 127                 *nbuffers = 3 - q_num_bufs;
 128
 129         *nplanes = 1;
 130         sizes[0] = size;
 131
 132         /* Calculate the offset for Y and C data in the buffer */
 133         vpif_calculate_offsets(ch);
 134
 135         return 0;
 136 }
 137
 138 /**
 139  * vpif_buffer_queue : Callback function to add buffer to DMA queue
 140  * @vb: ptr to vb2_buffer
 141  */
 142 static void vpif_buffer_queue(struct vb2_buffer *vb)
 143 {
 144         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 145         struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
 146         struct vpif_cap_buffer *buf = to_vpif_buffer(vbuf);
 147         struct common_obj *common;
 148         unsigned long flags;
 149
 150         common = &ch->common[VPIF_VIDEO_INDEX];
 151
 152         vpif_dbg(2, debug, "vpif_buffer_queue\n");
 153
 154         spin_lock_irqsave(&common->irqlock, flags);
 155         /* add the buffer to the DMA queue */
 156         list_add_tail(&buf->list, &common->dma_queue);
 157         spin_unlock_irqrestore(&common->irqlock, flags);
 158 }
 159
 160 /**
 161  * vpif_start_streaming : Starts the DMA engine for streaming
 162  * @vq: ptr to vb2_buffer
 163  * @count: number of buffers
 164  */
 165 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
 166 {
 167         struct vpif_capture_config *vpif_config_data =
 168                                         vpif_dev->platform_data;
 169         struct channel_obj *ch = vb2_get_drv_priv(vq);
 170         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 171         struct vpif_params *vpif = &ch->vpifparams;
 172         struct vpif_cap_buffer *buf, *tmp;
 173         unsigned long addr, flags;
 174         int ret;
 175
 176         /* Initialize field_id */
 177         ch->field_id = 0;
 178
 179         /* configure 1 or 2 channel mode */
 180         if (vpif_config_data->setup_input_channel_mode) {
 181                 ret = vpif_config_data->
 182                         setup_input_channel_mode(vpif->std_info.ycmux_mode);
 183                 if (ret < 0) {
 184                         vpif_dbg(1, debug, "can't set vpif channel mode\n");
 185                         goto err;
 186                 }
 187         }
 188
 189         ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
 190         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 191                 vpif_dbg(1, debug, "stream on failed in subdev\n");
 192                 goto err;
 193         }
 194
 195         /* Call vpif_set_params function to set the parameters and addresses */
 196         ret = vpif_set_video_params(vpif, ch->channel_id);
 197         if (ret < 0) {
 198                 vpif_dbg(1, debug, "can't set video params\n");
 199                 goto err;
 200         }
 201
 202         ycmux_mode = ret;
 203         vpif_config_addr(ch, ret);
 204
 205         /* Get the next frame from the buffer queue */
 206         spin_lock_irqsave(&common->irqlock, flags);
 207         common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
 208                                     struct vpif_cap_buffer, list);
 209         /* Remove buffer from the buffer queue */
 210         list_del(&common->cur_frm->list);
 211         spin_unlock_irqrestore(&common->irqlock, flags);
 212
 213         addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
 214
 215         common->set_addr(addr + common->ytop_off,
 216                          addr + common->ybtm_off,
 217                          addr + common->ctop_off,
 218                          addr + common->cbtm_off);
 219
 220         /**
 221          * Set interrupt for both the fields in VPIF Register enable channel in
 222          * VPIF register
 223          */
 224         channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
 225         if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
 226                 channel0_intr_assert();
 227                 channel0_intr_enable(1);
 228                 enable_channel0(1);
 229         }
 230         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
 231                 ycmux_mode == 2) {
 232                 channel1_intr_assert();
 233                 channel1_intr_enable(1);
 234                 enable_channel1(1);
 235         }
 236
 237         return 0;
 238
 239 err:
 240         spin_lock_irqsave(&common->irqlock, flags);
 241         list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
 242                 list_del(&buf->list);
 243                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
 244         }
 245         spin_unlock_irqrestore(&common->irqlock, flags);
 246
 247         return ret;
 248 }
 249
 250 /**
 251  * vpif_stop_streaming : Stop the DMA engine
 252  * @vq: ptr to vb2_queue
 253  *
 254  * This callback stops the DMA engine and any remaining buffers
 255  * in the DMA queue are released.
 256  */
 257 static void vpif_stop_streaming(struct vb2_queue *vq)
 258 {
 259         struct channel_obj *ch = vb2_get_drv_priv(vq);
 260         struct common_obj *common;
 261         unsigned long flags;
 262         int ret;
 263
 264         common = &ch->common[VPIF_VIDEO_INDEX];
 265
 266         /* Disable channel as per its device type and channel id */
 267         if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
 268                 enable_channel0(0);
 269                 channel0_intr_enable(0);
 270         }
 271         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
 272                 ycmux_mode == 2) {
 273                 enable_channel1(0);
 274                 channel1_intr_enable(0);
 275         }
 276
 277         ycmux_mode = 0;
 278
 279         ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
 280         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
 281                 vpif_dbg(1, debug, "stream off failed in subdev\n");
 282
 283         /* release all active buffers */
 284         if (common->cur_frm == common->next_frm) {
 285                 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
 286                                 VB2_BUF_STATE_ERROR);
 287         } else {
 288                 if (common->cur_frm)
 289                         vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
 290                                         VB2_BUF_STATE_ERROR);
 291                 if (common->next_frm)
 292                         vb2_buffer_done(&common->next_frm->vb.vb2_buf,
 293                                         VB2_BUF_STATE_ERROR);
 294         }
 295
 296         spin_lock_irqsave(&common->irqlock, flags);
 297         while (!list_empty(&common->dma_queue)) {
 298                 common->next_frm = list_entry(common->dma_queue.next,
 299                                                 struct vpif_cap_buffer, list);
 300                 list_del(&common->next_frm->list);
 301                 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
 302                                 VB2_BUF_STATE_ERROR);
 303         }
 304         spin_unlock_irqrestore(&common->irqlock, flags);
 305 }
 306
 307 static const struct vb2_ops video_qops = {
 308         .queue_setup            = vpif_buffer_queue_setup,
 309         .buf_prepare            = vpif_buffer_prepare,
 310         .start_streaming        = vpif_start_streaming,
 311         .stop_streaming         = vpif_stop_streaming,
 312         .buf_queue              = vpif_buffer_queue,
 313         .wait_prepare           = vb2_ops_wait_prepare,
 314         .wait_finish            = vb2_ops_wait_finish,
 315 };
 316
 317 /**
 318  * vpif_process_buffer_complete: process a completed buffer
 319  * @common: ptr to common channel object
 320  *
 321  * This function time stamp the buffer and mark it as DONE. It also
 322  * wake up any process waiting on the QUEUE and set the next buffer
 323  * as current
 324  */
 325 static void vpif_process_buffer_complete(struct common_obj *common)
 326 {
 327         common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
 328         vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
 329         /* Make curFrm pointing to nextFrm */
 330         common->cur_frm = common->next_frm;
 331 }
 332
 333 /**
 334  * vpif_schedule_next_buffer: set next buffer address for capture
 335  * @common : ptr to common channel object
 336  *
 337  * This function will get next buffer from the dma queue and
 338  * set the buffer address in the vpif register for capture.
 339  * the buffer is marked active
 340  */
 341 static void vpif_schedule_next_buffer(struct common_obj *common)
 342 {
 343         unsigned long addr = 0;
 344
 345         spin_lock(&common->irqlock);
 346         common->next_frm = list_entry(common->dma_queue.next,
 347                                      struct vpif_cap_buffer, list);
 348         /* Remove that buffer from the buffer queue */
 349         list_del(&common->next_frm->list);
 350         spin_unlock(&common->irqlock);
 351         addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
 352
 353         /* Set top and bottom field addresses in VPIF registers */
 354         common->set_addr(addr + common->ytop_off,
 355                          addr + common->ybtm_off,
 356                          addr + common->ctop_off,
 357                          addr + common->cbtm_off);
 358 }
 359
 360 /**
 361  * vpif_channel_isr : ISR handler for vpif capture
 362  * @irq: irq number
 363  * @dev_id: dev_id ptr
 364  *
 365  * It changes status of the captured buffer, takes next buffer from the queue
 366  * and sets its address in VPIF registers
 367  */
 368 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
 369 {
 370         struct vpif_device *dev = &vpif_obj;
 371         struct common_obj *common;
 372         struct channel_obj *ch;
 373         int channel_id;
 374         int fid = -1, i;
 375
 376         channel_id = *(int *)(dev_id);
 377         if (!vpif_intr_status(channel_id))
 378                 return IRQ_NONE;
 379
 380         ch = dev->dev[channel_id];
 381
 382         for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
 383                 common = &ch->common[i];
 384                 /* skip If streaming is not started in this channel */
 385                 /* Check the field format */
 386                 if (1 == ch->vpifparams.std_info.frm_fmt ||
 387                     common->fmt.fmt.pix.field == V4L2_FIELD_NONE) {
 388                         /* Progressive mode */
 389                         spin_lock(&common->irqlock);
 390                         if (list_empty(&common->dma_queue)) {
 391                                 spin_unlock(&common->irqlock);
 392                                 continue;
 393                         }
 394                         spin_unlock(&common->irqlock);
 395
 396                         if (!channel_first_int[i][channel_id])
 397                                 vpif_process_buffer_complete(common);
 398
 399                         channel_first_int[i][channel_id] = 0;
 400
 401                         vpif_schedule_next_buffer(common);
 402
 403
 404                         channel_first_int[i][channel_id] = 0;
 405                 } else {
 406                         /**
 407                          * Interlaced mode. If it is first interrupt, ignore
 408                          * it
 409                          */
 410                         if (channel_first_int[i][channel_id]) {
 411                                 channel_first_int[i][channel_id] = 0;
 412                                 continue;
 413                         }
 414                         if (0 == i) {
 415                                 ch->field_id ^= 1;
 416                                 /* Get field id from VPIF registers */
 417                                 fid = vpif_channel_getfid(ch->channel_id);
 418                                 if (fid != ch->field_id) {
 419                                         /**
 420                                          * If field id does not match stored
 421                                          * field id, make them in sync
 422                                          */
 423                                         if (0 == fid)
 424                                                 ch->field_id = fid;
 425                                         return IRQ_HANDLED;
 426                                 }
 427                         }
 428                         /* device field id and local field id are in sync */
 429                         if (0 == fid) {
 430                                 /* this is even field */
 431                                 if (common->cur_frm == common->next_frm)
 432                                         continue;
 433
 434                                 /* mark the current buffer as done */
 435                                 vpif_process_buffer_complete(common);
 436                         } else if (1 == fid) {
 437                                 /* odd field */
 438                                 spin_lock(&common->irqlock);
 439                                 if (list_empty(&common->dma_queue) ||
 440                                     (common->cur_frm != common->next_frm)) {
 441                                         spin_unlock(&common->irqlock);
 442                                         continue;
 443                                 }
 444                                 spin_unlock(&common->irqlock);
 445
 446                                 vpif_schedule_next_buffer(common);
 447                         }
 448                 }
 449         }
 450         return IRQ_HANDLED;
 451 }
 452
 453 /**
 454  * vpif_update_std_info() - update standard related info
 455  * @ch: ptr to channel object
 456  *
 457  * For a given standard selected by application, update values
 458  * in the device data structures
 459  */
 460 static int vpif_update_std_info(struct channel_obj *ch)
 461 {
 462         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 463         struct vpif_params *vpifparams = &ch->vpifparams;
 464         const struct vpif_channel_config_params *config;
 465         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
 466         struct video_obj *vid_ch = &ch->video;
 467         int index;
 468         struct v4l2_pix_format *pixfmt = &common->fmt.fmt.pix;
 469
 470         vpif_dbg(2, debug, "vpif_update_std_info\n");
 471
 472         /*
 473          * if called after try_fmt or g_fmt, there will already be a size
 474          * so use that by default.
 475          */
 476         if (pixfmt->width && pixfmt->height) {
 477                 if (pixfmt->field == V4L2_FIELD_ANY ||
 478                     pixfmt->field == V4L2_FIELD_NONE)
 479                         pixfmt->field = V4L2_FIELD_NONE;
 480
 481                 vpifparams->iface.if_type = VPIF_IF_BT656;
 482                 if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10 ||
 483                     pixfmt->pixelformat == V4L2_PIX_FMT_SBGGR8)
 484                         vpifparams->iface.if_type = VPIF_IF_RAW_BAYER;
 485
 486                 if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10)
 487                         vpifparams->params.data_sz = 1; /* 10 bits/pixel.  */
 488
 489                 /*
 490                  * For raw formats from camera sensors, we don't need
 491                  * the std_info from table lookup, so nothing else to do here.
 492                  */
 493                 if (vpifparams->iface.if_type == VPIF_IF_RAW_BAYER) {
 494                         memset(std_info, 0, sizeof(struct vpif_channel_config_params));
 495                         vpifparams->std_info.capture_format = 1; /* CCD/raw mode */
 496                         return 0;
 497                 }
 498         }
 499
 500         for (index = 0; index < vpif_ch_params_count; index++) {
 501                 config = &vpif_ch_params[index];
 502                 if (config->hd_sd == 0) {
 503                         vpif_dbg(2, debug, "SD format\n");
 504                         if (config->stdid & vid_ch->stdid) {
 505                                 memcpy(std_info, config, sizeof(*config));
 506                                 break;
 507                         }
 508                 } else {
 509                         vpif_dbg(2, debug, "HD format\n");
 510                         if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
 511                                 sizeof(vid_ch->dv_timings))) {
 512                                 memcpy(std_info, config, sizeof(*config));
 513                                 break;
 514                         }
 515                 }
 516         }
 517
 518         /* standard not found */
 519         if (index == vpif_ch_params_count)
 520                 return -EINVAL;
 521
 522         common->fmt.fmt.pix.width = std_info->width;
 523         common->width = std_info->width;
 524         common->fmt.fmt.pix.height = std_info->height;
 525         common->height = std_info->height;
 526         common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
 527         common->fmt.fmt.pix.bytesperline = std_info->width;
 528         vpifparams->video_params.hpitch = std_info->width;
 529         vpifparams->video_params.storage_mode = std_info->frm_fmt;
 530
 531         if (vid_ch->stdid)
 532                 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 533         else
 534                 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
 535
 536         if (ch->vpifparams.std_info.frm_fmt)
 537                 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
 538         else
 539                 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
 540
 541         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
 542                 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
 543         else
 544                 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV16;
 545
 546         common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 547
 548         return 0;
 549 }
 550
 551 /**
 552  * vpif_calculate_offsets : This function calculates buffers offsets
 553  * @ch : ptr to channel object
 554  *
 555  * This function calculates buffer offsets for Y and C in the top and
 556  * bottom field
 557  */
 558 static void vpif_calculate_offsets(struct channel_obj *ch)
 559 {
 560         unsigned int hpitch, sizeimage;
 561         struct video_obj *vid_ch = &(ch->video);
 562         struct vpif_params *vpifparams = &ch->vpifparams;
 563         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 564         enum v4l2_field field = common->fmt.fmt.pix.field;
 565
 566         vpif_dbg(2, debug, "vpif_calculate_offsets\n");
 567
 568         if (V4L2_FIELD_ANY == field) {
 569                 if (vpifparams->std_info.frm_fmt)
 570                         vid_ch->buf_field = V4L2_FIELD_NONE;
 571                 else
 572                         vid_ch->buf_field = V4L2_FIELD_INTERLACED;
 573         } else
 574                 vid_ch->buf_field = common->fmt.fmt.pix.field;
 575
 576         sizeimage = common->fmt.fmt.pix.sizeimage;
 577
 578         hpitch = common->fmt.fmt.pix.bytesperline;
 579
 580         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 581             (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
 582                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 583                 common->ytop_off = 0;
 584                 common->ybtm_off = hpitch;
 585                 common->ctop_off = sizeimage / 2;
 586                 common->cbtm_off = sizeimage / 2 + hpitch;
 587         } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
 588                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 589                 common->ytop_off = 0;
 590                 common->ybtm_off = sizeimage / 4;
 591                 common->ctop_off = sizeimage / 2;
 592                 common->cbtm_off = common->ctop_off + sizeimage / 4;
 593         } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
 594                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 595                 common->ybtm_off = 0;
 596                 common->ytop_off = sizeimage / 4;
 597                 common->cbtm_off = sizeimage / 2;
 598                 common->ctop_off = common->cbtm_off + sizeimage / 4;
 599         }
 600         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 601             (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
 602                 vpifparams->video_params.storage_mode = 1;
 603         else
 604                 vpifparams->video_params.storage_mode = 0;
 605
 606         if (1 == vpifparams->std_info.frm_fmt)
 607                 vpifparams->video_params.hpitch =
 608                     common->fmt.fmt.pix.bytesperline;
 609         else {
 610                 if ((field == V4L2_FIELD_ANY)
 611                     || (field == V4L2_FIELD_INTERLACED))
 612                         vpifparams->video_params.hpitch =
 613                             common->fmt.fmt.pix.bytesperline * 2;
 614                 else
 615                         vpifparams->video_params.hpitch =
 616                             common->fmt.fmt.pix.bytesperline;
 617         }
 618
 619         ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
 620 }
 621
 622 /**
 623  * vpif_config_addr() - function to configure buffer address in vpif
 624  * @ch: channel ptr
 625  * @muxmode: channel mux mode
 626  */
 627 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
 628 {
 629         struct common_obj *common;
 630
 631         vpif_dbg(2, debug, "vpif_config_addr\n");
 632
 633         common = &(ch->common[VPIF_VIDEO_INDEX]);
 634
 635         if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
 636                 common->set_addr = ch1_set_video_buf_addr;
 637         else if (2 == muxmode)
 638                 common->set_addr = ch0_set_video_buf_addr_yc_nmux;
 639         else
 640                 common->set_addr = ch0_set_video_buf_addr;
 641 }
 642
 643 /**
 644  * vpif_input_to_subdev() - Maps input to sub device
 645  * @vpif_cfg: global config ptr
 646  * @chan_cfg: channel config ptr
 647  * @input_index: Given input index from application
 648  *
 649  * lookup the sub device information for a given input index.
 650  * we report all the inputs to application. inputs table also
 651  * has sub device name for the each input
 652  */
 653 static int vpif_input_to_subdev(
 654                 struct vpif_capture_config *vpif_cfg,
 655                 struct vpif_capture_chan_config *chan_cfg,
 656                 int input_index)
 657 {
 658         struct vpif_subdev_info *subdev_info;
 659         const char *subdev_name;
 660         int i;
 661
 662         vpif_dbg(2, debug, "vpif_input_to_subdev\n");
 663
 664         if (!chan_cfg)
 665                 return -1;
 666         if (input_index >= chan_cfg->input_count)
 667                 return -1;
 668         subdev_name = chan_cfg->inputs[input_index].subdev_name;
 669         if (!subdev_name)
 670                 return -1;
 671
 672         /* loop through the sub device list to get the sub device info */
 673         for (i = 0; i < vpif_cfg->subdev_count; i++) {
 674                 subdev_info = &vpif_cfg->subdev_info[i];
 675                 if (subdev_info && !strcmp(subdev_info->name, subdev_name))
 676                         return i;
 677         }
 678         return -1;
 679 }
 680
 681 /**
 682  * vpif_set_input() - Select an input
 683  * @vpif_cfg: global config ptr
 684  * @ch: channel
 685  * @index: Given input index from application
 686  *
 687  * Select the given input.
 688  */
 689 static int vpif_set_input(
 690                 struct vpif_capture_config *vpif_cfg,
 691                 struct channel_obj *ch,
 692                 int index)
 693 {
 694         struct vpif_capture_chan_config *chan_cfg =
 695                         &vpif_cfg->chan_config[ch->channel_id];
 696         struct vpif_subdev_info *subdev_info = NULL;
 697         struct v4l2_subdev *sd = NULL;
 698         u32 input = 0, output = 0;
 699         int sd_index;
 700         int ret;
 701
 702         sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
 703         if (sd_index >= 0) {
 704                 sd = vpif_obj.sd[sd_index];
 705                 subdev_info = &vpif_cfg->subdev_info[sd_index];
 706         } else {
 707                 /* no subdevice, no input to setup */
 708                 return 0;
 709         }
 710
 711         /* first setup input path from sub device to vpif */
 712         if (sd && vpif_cfg->setup_input_path) {
 713                 ret = vpif_cfg->setup_input_path(ch->channel_id,
 714                                        subdev_info->name);
 715                 if (ret < 0) {
 716                         vpif_dbg(1, debug, "couldn't setup input path for the" \
 717                         " sub device %s, for input index %d\n",
 718                         subdev_info->name, index);
 719                         return ret;
 720                 }
 721         }
 722
 723         if (sd) {
 724                 input = chan_cfg->inputs[index].input_route;
 725                 output = chan_cfg->inputs[index].output_route;
 726                 ret = v4l2_subdev_call(sd, video, s_routing,
 727                                 input, output, 0);
 728                 if (ret < 0 && ret != -ENOIOCTLCMD) {
 729                         vpif_dbg(1, debug, "Failed to set input\n");
 730                         return ret;
 731                 }
 732         }
 733         ch->input_idx = index;
 734         ch->sd = sd;
 735         /* copy interface parameters to vpif */
 736         ch->vpifparams.iface = chan_cfg->vpif_if;
 737
 738         /* update tvnorms from the sub device input info */
 739         ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
 740         return 0;
 741 }
 742
 743 /**
 744  * vpif_querystd() - querystd handler
 745  * @file: file ptr
 746  * @priv: file handle
 747  * @std_id: ptr to std id
 748  *
 749  * This function is called to detect standard at the selected input
 750  */
 751 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
 752 {
 753         struct video_device *vdev = video_devdata(file);
 754         struct channel_obj *ch = video_get_drvdata(vdev);
 755         int ret;
 756
 757         vpif_dbg(2, debug, "vpif_querystd\n");
 758
 759         /* Call querystd function of decoder device */
 760         ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
 761
 762         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
 763                 return -ENODATA;
 764         if (ret) {
 765                 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
 766                 return ret;
 767         }
 768
 769         return 0;
 770 }
 771
 772 /**
 773  * vpif_g_std() - get STD handler
 774  * @file: file ptr
 775  * @priv: file handle
 776  * @std: ptr to std id
 777  */
 778 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
 779 {
 780         struct vpif_capture_config *config = vpif_dev->platform_data;
 781         struct video_device *vdev = video_devdata(file);
 782         struct channel_obj *ch = video_get_drvdata(vdev);
 783         struct vpif_capture_chan_config *chan_cfg;
 784         struct v4l2_input input;
 785
 786         vpif_dbg(2, debug, "vpif_g_std\n");
 787
 788         if (!config->chan_config[ch->channel_id].inputs)
 789                 return -ENODATA;
 790
 791         chan_cfg = &config->chan_config[ch->channel_id];
 792         input = chan_cfg->inputs[ch->input_idx].input;
 793         if (input.capabilities != V4L2_IN_CAP_STD)
 794                 return -ENODATA;
 795
 796         *std = ch->video.stdid;
 797         return 0;
 798 }
 799
 800 /**
 801  * vpif_s_std() - set STD handler
 802  * @file: file ptr
 803  * @priv: file handle
 804  * @std_id: ptr to std id
 805  */
 806 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
 807 {
 808         struct vpif_capture_config *config = vpif_dev->platform_data;
 809         struct video_device *vdev = video_devdata(file);
 810         struct channel_obj *ch = video_get_drvdata(vdev);
 811         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 812         struct vpif_capture_chan_config *chan_cfg;
 813         struct v4l2_input input;
 814         int ret;
 815
 816         vpif_dbg(2, debug, "vpif_s_std\n");
 817
 818         if (!config->chan_config[ch->channel_id].inputs)
 819                 return -ENODATA;
 820
 821         chan_cfg = &config->chan_config[ch->channel_id];
 822         input = chan_cfg->inputs[ch->input_idx].input;
 823         if (input.capabilities != V4L2_IN_CAP_STD)
 824                 return -ENODATA;
 825
 826         if (vb2_is_busy(&common->buffer_queue))
 827                 return -EBUSY;
 828
 829         /* Call encoder subdevice function to set the standard */
 830         ch->video.stdid = std_id;
 831         memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
 832
 833         /* Get the information about the standard */
 834         if (vpif_update_std_info(ch)) {
 835                 vpif_err("Error getting the standard info\n");
 836                 return -EINVAL;
 837         }
 838
 839         /* set standard in the sub device */
 840         ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
 841         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 842                 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
 843                 return ret;
 844         }
 845         return 0;
 846 }
 847
 848 /**
 849  * vpif_enum_input() - ENUMINPUT handler
 850  * @file: file ptr
 851  * @priv: file handle
 852  * @input: ptr to input structure
 853  */
 854 static int vpif_enum_input(struct file *file, void *priv,
 855                                 struct v4l2_input *input)
 856 {
 857
 858         struct vpif_capture_config *config = vpif_dev->platform_data;
 859         struct video_device *vdev = video_devdata(file);
 860         struct channel_obj *ch = video_get_drvdata(vdev);
 861         struct vpif_capture_chan_config *chan_cfg;
 862
 863         chan_cfg = &config->chan_config[ch->channel_id];
 864
 865         if (input->index >= chan_cfg->input_count)
 866                 return -EINVAL;
 867
 868         memcpy(input, &chan_cfg->inputs[input->index].input,
 869                 sizeof(*input));
 870         return 0;
 871 }
 872
 873 /**
 874  * vpif_g_input() - Get INPUT handler
 875  * @file: file ptr
 876  * @priv: file handle
 877  * @index: ptr to input index
 878  */
 879 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
 880 {
 881         struct video_device *vdev = video_devdata(file);
 882         struct channel_obj *ch = video_get_drvdata(vdev);
 883
 884         *index = ch->input_idx;
 885         return 0;
 886 }
 887
 888 /**
 889  * vpif_s_input() - Set INPUT handler
 890  * @file: file ptr
 891  * @priv: file handle
 892  * @index: input index
 893  */
 894 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
 895 {
 896         struct vpif_capture_config *config = vpif_dev->platform_data;
 897         struct video_device *vdev = video_devdata(file);
 898         struct channel_obj *ch = video_get_drvdata(vdev);
 899         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 900         struct vpif_capture_chan_config *chan_cfg;
 901
 902         chan_cfg = &config->chan_config[ch->channel_id];
 903
 904         if (index >= chan_cfg->input_count)
 905                 return -EINVAL;
 906
 907         if (vb2_is_busy(&common->buffer_queue))
 908                 return -EBUSY;
 909
 910         return vpif_set_input(config, ch, index);
 911 }
 912
 913 /**
 914  * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
 915  * @file: file ptr
 916  * @priv: file handle
 917  * @fmt: ptr to V4L2 format descriptor
 918  */
 919 static int vpif_enum_fmt_vid_cap(struct file *file, void  *priv,
 920                                         struct v4l2_fmtdesc *fmt)
 921 {
 922         struct video_device *vdev = video_devdata(file);
 923         struct channel_obj *ch = video_get_drvdata(vdev);
 924
 925         if (fmt->index != 0) {
 926                 vpif_dbg(1, debug, "Invalid format index\n");
 927                 return -EINVAL;
 928         }
 929
 930         /* Fill in the information about format */
 931         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
 932                 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
 933         else
 934                 fmt->pixelformat = V4L2_PIX_FMT_NV16;
 935         return 0;
 936 }
 937
 938 /**
 939  * vpif_try_fmt_vid_cap() - TRY_FMT handler
 940  * @file: file ptr
 941  * @priv: file handle
 942  * @fmt: ptr to v4l2 format structure
 943  */
 944 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
 945                                 struct v4l2_format *fmt)
 946 {
 947         struct video_device *vdev = video_devdata(file);
 948         struct channel_obj *ch = video_get_drvdata(vdev);
 949         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 950         struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
 951
 952         common->fmt = *fmt;
 953         vpif_update_std_info(ch);
 954
 955         pixfmt->field = common->fmt.fmt.pix.field;
 956         pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
 957         pixfmt->bytesperline = common->fmt.fmt.pix.width;
 958         pixfmt->width = common->fmt.fmt.pix.width;
 959         pixfmt->height = common->fmt.fmt.pix.height;
 960         pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
 961         if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10) {
 962                 pixfmt->bytesperline = common->fmt.fmt.pix.width * 2;
 963                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 964         }
 965
 966         dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d pixelformat=0x%08x, field=%d, size=%d\n", __func__,
 967                 pixfmt->width, pixfmt->height,
 968                 pixfmt->bytesperline, pixfmt->pixelformat,
 969                 pixfmt->field, pixfmt->sizeimage);
 970
 971         return 0;
 972 }
 973
 974
 975 /**
 976  * vpif_g_fmt_vid_cap() - Set INPUT handler
 977  * @file: file ptr
 978  * @priv: file handle
 979  * @fmt: ptr to v4l2 format structure
 980  */
 981 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
 982                                 struct v4l2_format *fmt)
 983 {
 984         struct video_device *vdev = video_devdata(file);
 985         struct channel_obj *ch = video_get_drvdata(vdev);
 986         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 987         struct v4l2_pix_format *pix_fmt = &fmt->fmt.pix;
 988         struct v4l2_subdev_format format = {
 989                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
 990         };
 991         struct v4l2_mbus_framefmt *mbus_fmt = &format.format;
 992         int ret;
 993
 994         /* Check the validity of the buffer type */
 995         if (common->fmt.type != fmt->type)
 996                 return -EINVAL;
 997
 998         /* By default, use currently set fmt */
 999         *fmt = common->fmt;
1000
1001         /* If subdev has get_fmt, use that to override */
1002         ret = v4l2_subdev_call(ch->sd, pad, get_fmt, NULL, &format);
1003         if (!ret && mbus_fmt->code) {
1004                 v4l2_fill_pix_format(pix_fmt, mbus_fmt);
1005                 pix_fmt->bytesperline = pix_fmt->width;
1006                 if (mbus_fmt->code == MEDIA_BUS_FMT_SGRBG10_1X10) {
1007                         /* e.g. mt9v032 */
1008                         pix_fmt->pixelformat = V4L2_PIX_FMT_SGRBG10;
1009                         pix_fmt->bytesperline = pix_fmt->width * 2;
1010                 } else if (mbus_fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) {
1011                         /* e.g. tvp514x */
1012                         pix_fmt->pixelformat = V4L2_PIX_FMT_NV16;
1013                         pix_fmt->bytesperline = pix_fmt->width * 2;
1014                 } else {
1015                         dev_warn(vpif_dev, "%s: Unhandled media-bus format 0x%x\n",
1016                                  __func__, mbus_fmt->code);
1017                 }
1018                 pix_fmt->sizeimage = pix_fmt->bytesperline * pix_fmt->height;
1019                 dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d, pixelformat=0x%08x, code=0x%x, field=%d, size=%d\n", __func__,
1020                         pix_fmt->width, pix_fmt->height,
1021                         pix_fmt->bytesperline, pix_fmt->pixelformat,
1022                         mbus_fmt->code, pix_fmt->field, pix_fmt->sizeimage);
1023
1024                 common->fmt = *fmt;
1025                 vpif_update_std_info(ch);
1026         }
1027
1028         return 0;
1029 }
1030
1031 /**
1032  * vpif_s_fmt_vid_cap() - Set FMT handler
1033  * @file: file ptr
1034  * @priv: file handle
1035  * @fmt: ptr to v4l2 format structure
1036  */
1037 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
1038                                 struct v4l2_format *fmt)
1039 {
1040         struct video_device *vdev = video_devdata(file);
1041         struct channel_obj *ch = video_get_drvdata(vdev);
1042         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1043         int ret;
1044
1045         vpif_dbg(2, debug, "%s\n", __func__);
1046
1047         if (vb2_is_busy(&common->buffer_queue))
1048                 return -EBUSY;
1049
1050         ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1051         if (ret)
1052                 return ret;
1053
1054         /* store the format in the channel object */
1055         common->fmt = *fmt;
1056         return 0;
1057 }
1058
1059 /**
1060  * vpif_querycap() - QUERYCAP handler
1061  * @file: file ptr
1062  * @priv: file handle
1063  * @cap: ptr to v4l2_capability structure
1064  */
1065 static int vpif_querycap(struct file *file, void  *priv,
1066                                 struct v4l2_capability *cap)
1067 {
1068         struct vpif_capture_config *config = vpif_dev->platform_data;
1069
1070         strscpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1071         strscpy(cap->card, config->card_name, sizeof(cap->card));
1072
1073         return 0;
1074 }
1075
1076 /**
1077  * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1078  * @file: file ptr
1079  * @priv: file handle
1080  * @timings: input timings
1081  */
1082 static int
1083 vpif_enum_dv_timings(struct file *file, void *priv,
1084                      struct v4l2_enum_dv_timings *timings)
1085 {
1086         struct vpif_capture_config *config = vpif_dev->platform_data;
1087         struct video_device *vdev = video_devdata(file);
1088         struct channel_obj *ch = video_get_drvdata(vdev);
1089         struct vpif_capture_chan_config *chan_cfg;
1090         struct v4l2_input input;
1091         int ret;
1092
1093         if (!config->chan_config[ch->channel_id].inputs)
1094                 return -ENODATA;
1095
1096         chan_cfg = &config->chan_config[ch->channel_id];
1097         input = chan_cfg->inputs[ch->input_idx].input;
1098         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1099                 return -ENODATA;
1100
1101         timings->pad = 0;
1102
1103         ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1104         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1105                 return -EINVAL;
1106
1107         return ret;
1108 }
1109
1110 /**
1111  * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1112  * @file: file ptr
1113  * @priv: file handle
1114  * @timings: input timings
1115  */
1116 static int
1117 vpif_query_dv_timings(struct file *file, void *priv,
1118                       struct v4l2_dv_timings *timings)
1119 {
1120         struct vpif_capture_config *config = vpif_dev->platform_data;
1121         struct video_device *vdev = video_devdata(file);
1122         struct channel_obj *ch = video_get_drvdata(vdev);
1123         struct vpif_capture_chan_config *chan_cfg;
1124         struct v4l2_input input;
1125         int ret;
1126
1127         if (!config->chan_config[ch->channel_id].inputs)
1128                 return -ENODATA;
1129
1130         chan_cfg = &config->chan_config[ch->channel_id];
1131         input = chan_cfg->inputs[ch->input_idx].input;
1132         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1133                 return -ENODATA;
1134
1135         ret = v4l2_subdev_call(ch->sd, pad, query_dv_timings, 0, timings);
1136         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1137                 return -ENODATA;
1138
1139         return ret;
1140 }
1141
1142 /**
1143  * vpif_s_dv_timings() - S_DV_TIMINGS handler
1144  * @file: file ptr
1145  * @priv: file handle
1146  * @timings: digital video timings
1147  */
1148 static int vpif_s_dv_timings(struct file *file, void *priv,
1149                 struct v4l2_dv_timings *timings)
1150 {
1151         struct vpif_capture_config *config = vpif_dev->platform_data;
1152         struct video_device *vdev = video_devdata(file);
1153         struct channel_obj *ch = video_get_drvdata(vdev);
1154         struct vpif_params *vpifparams = &ch->vpifparams;
1155         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1156         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1157         struct video_obj *vid_ch = &ch->video;
1158         struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1159         struct vpif_capture_chan_config *chan_cfg;
1160         struct v4l2_input input;
1161         int ret;
1162
1163         if (!config->chan_config[ch->channel_id].inputs)
1164                 return -ENODATA;
1165
1166         chan_cfg = &config->chan_config[ch->channel_id];
1167         input = chan_cfg->inputs[ch->input_idx].input;
1168         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1169                 return -ENODATA;
1170
1171         if (timings->type != V4L2_DV_BT_656_1120) {
1172                 vpif_dbg(2, debug, "Timing type not defined\n");
1173                 return -EINVAL;
1174         }
1175
1176         if (vb2_is_busy(&common->buffer_queue))
1177                 return -EBUSY;
1178
1179         /* Configure subdevice timings, if any */
1180         ret = v4l2_subdev_call(ch->sd, pad, s_dv_timings, 0, timings);
1181         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1182                 ret = 0;
1183         if (ret < 0) {
1184                 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1185                 return ret;
1186         }
1187
1188         if (!(timings->bt.width && timings->bt.height &&
1189                                 (timings->bt.hbackporch ||
1190                                  timings->bt.hfrontporch ||
1191                                  timings->bt.hsync) &&
1192                                 timings->bt.vfrontporch &&
1193                                 (timings->bt.vbackporch ||
1194                                  timings->bt.vsync))) {
1195                 vpif_dbg(2, debug, "Timings for width, height, horizontal back porch, horizontal sync, horizontal front porch, vertical back porch, vertical sync and vertical back porch must be defined\n");
1196                 return -EINVAL;
1197         }
1198
1199         vid_ch->dv_timings = *timings;
1200
1201         /* Configure video port timings */
1202
1203         std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1204         std_info->sav2eav = bt->width;
1205
1206         std_info->l1 = 1;
1207         std_info->l3 = bt->vsync + bt->vbackporch + 1;
1208
1209         std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1210         if (bt->interlaced) {
1211                 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1212                         std_info->l5 = std_info->vsize/2 -
1213                                 (bt->vfrontporch - 1);
1214                         std_info->l7 = std_info->vsize/2 + 1;
1215                         std_info->l9 = std_info->l7 + bt->il_vsync +
1216                                 bt->il_vbackporch + 1;
1217                         std_info->l11 = std_info->vsize -
1218                                 (bt->il_vfrontporch - 1);
1219                 } else {
1220                         vpif_dbg(2, debug, "Required timing values for interlaced BT format missing\n");
1221                         return -EINVAL;
1222                 }
1223         } else {
1224                 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1225         }
1226         strscpy(std_info->name, "Custom timings BT656/1120",
1227                 sizeof(std_info->name));
1228         std_info->width = bt->width;
1229         std_info->height = bt->height;
1230         std_info->frm_fmt = bt->interlaced ? 0 : 1;
1231         std_info->ycmux_mode = 0;
1232         std_info->capture_format = 0;
1233         std_info->vbi_supported = 0;
1234         std_info->hd_sd = 1;
1235         std_info->stdid = 0;
1236
1237         vid_ch->stdid = 0;
1238         return 0;
1239 }
1240
1241 /**
1242  * vpif_g_dv_timings() - G_DV_TIMINGS handler
1243  * @file: file ptr
1244  * @priv: file handle
1245  * @timings: digital video timings
1246  */
1247 static int vpif_g_dv_timings(struct file *file, void *priv,
1248                 struct v4l2_dv_timings *timings)
1249 {
1250         struct vpif_capture_config *config = vpif_dev->platform_data;
1251         struct video_device *vdev = video_devdata(file);
1252         struct channel_obj *ch = video_get_drvdata(vdev);
1253         struct video_obj *vid_ch = &ch->video;
1254         struct vpif_capture_chan_config *chan_cfg;
1255         struct v4l2_input input;
1256
1257         if (!config->chan_config[ch->channel_id].inputs)
1258                 return -ENODATA;
1259
1260         chan_cfg = &config->chan_config[ch->channel_id];
1261         input = chan_cfg->inputs[ch->input_idx].input;
1262         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1263                 return -ENODATA;
1264
1265         *timings = vid_ch->dv_timings;
1266
1267         return 0;
1268 }
1269
1270 /*
1271  * vpif_log_status() - Status information
1272  * @file: file ptr
1273  * @priv: file handle
1274  *
1275  * Returns zero.
1276  */
1277 static int vpif_log_status(struct file *filep, void *priv)
1278 {
1279         /* status for sub devices */
1280         v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1281
1282         return 0;
1283 }
1284
1285 /* vpif capture ioctl operations */
1286 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1287         .vidioc_querycap                = vpif_querycap,
1288         .vidioc_enum_fmt_vid_cap        = vpif_enum_fmt_vid_cap,
1289         .vidioc_g_fmt_vid_cap           = vpif_g_fmt_vid_cap,
1290         .vidioc_s_fmt_vid_cap           = vpif_s_fmt_vid_cap,
1291         .vidioc_try_fmt_vid_cap         = vpif_try_fmt_vid_cap,
1292
1293         .vidioc_enum_input              = vpif_enum_input,
1294         .vidioc_s_input                 = vpif_s_input,
1295         .vidioc_g_input                 = vpif_g_input,
1296
1297         .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
1298         .vidioc_create_bufs             = vb2_ioctl_create_bufs,
1299         .vidioc_querybuf                = vb2_ioctl_querybuf,
1300         .vidioc_qbuf                    = vb2_ioctl_qbuf,
1301         .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
1302         .vidioc_expbuf                  = vb2_ioctl_expbuf,
1303         .vidioc_streamon                = vb2_ioctl_streamon,
1304         .vidioc_streamoff               = vb2_ioctl_streamoff,
1305
1306         .vidioc_querystd                = vpif_querystd,
1307         .vidioc_s_std                   = vpif_s_std,
1308         .vidioc_g_std                   = vpif_g_std,
1309
1310         .vidioc_enum_dv_timings         = vpif_enum_dv_timings,
1311         .vidioc_query_dv_timings        = vpif_query_dv_timings,
1312         .vidioc_s_dv_timings            = vpif_s_dv_timings,
1313         .vidioc_g_dv_timings            = vpif_g_dv_timings,
1314
1315         .vidioc_log_status              = vpif_log_status,
1316 };
1317
1318 /* vpif file operations */
1319 static const struct v4l2_file_operations vpif_fops = {
1320         .owner = THIS_MODULE,
1321         .open = v4l2_fh_open,
1322         .release = vb2_fop_release,
1323         .unlocked_ioctl = video_ioctl2,
1324         .mmap = vb2_fop_mmap,
1325         .poll = vb2_fop_poll
1326 };
1327
1328 /**
1329  * initialize_vpif() - Initialize vpif data structures
1330  *
1331  * Allocate memory for data structures and initialize them
1332  */
1333 static int initialize_vpif(void)
1334 {
1335         int err, i, j;
1336         int free_channel_objects_index;
1337
1338         /* Allocate memory for six channel objects */
1339         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1340                 vpif_obj.dev[i] =
1341                     kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1342                 /* If memory allocation fails, return error */
1343                 if (!vpif_obj.dev[i]) {
1344                         free_channel_objects_index = i;
1345                         err = -ENOMEM;
1346                         goto vpif_init_free_channel_objects;
1347                 }
1348         }
1349         return 0;
1350
1351 vpif_init_free_channel_objects:
1352         for (j = 0; j < free_channel_objects_index; j++)
1353                 kfree(vpif_obj.dev[j]);
1354         return err;
1355 }
1356
1357 static inline void free_vpif_objs(void)
1358 {
1359         int i;
1360
1361         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
1362                 kfree(vpif_obj.dev[i]);
1363 }
1364
1365 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1366                             struct v4l2_subdev *subdev,
1367                             struct v4l2_async_connection *asd)
1368 {
1369         int i;
1370
1371         for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) {
1372                 struct v4l2_async_connection *_asd = vpif_obj.config->asd[i];
1373                 const struct fwnode_handle *fwnode = _asd->match.fwnode;
1374
1375                 if (fwnode == subdev->fwnode) {
1376                         vpif_obj.sd[i] = subdev;
1377                         vpif_obj.config->chan_config->inputs[i].subdev_name =
1378                                 (char *)to_of_node(subdev->fwnode)->full_name;
1379                         vpif_dbg(2, debug,
1380                                  "%s: setting input %d subdev_name = %s\n",
1381                                  __func__, i,
1382                                 vpif_obj.config->chan_config->inputs[i].subdev_name);
1383                         return 0;
1384                 }
1385         }
1386
1387         for (i = 0; i < vpif_obj.config->subdev_count; i++)
1388                 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1389                             subdev->name)) {
1390                         vpif_obj.sd[i] = subdev;
1391                         return 0;
1392                 }
1393
1394         return -EINVAL;
1395 }
1396
1397 static int vpif_probe_complete(void)
1398 {
1399         struct common_obj *common;
1400         struct video_device *vdev;
1401         struct channel_obj *ch;
1402         struct vb2_queue *q;
1403         int j, err, k;
1404
1405         for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1406                 ch = vpif_obj.dev[j];
1407                 ch->channel_id = j;
1408                 common = &(ch->common[VPIF_VIDEO_INDEX]);
1409                 spin_lock_init(&common->irqlock);
1410                 mutex_init(&common->lock);
1411
1412                 /* select input 0 */
1413                 err = vpif_set_input(vpif_obj.config, ch, 0);
1414                 if (err)
1415                         goto probe_out;
1416
1417                 /* set initial format */
1418                 ch->video.stdid = V4L2_STD_525_60;
1419                 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1420                 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1421                 vpif_update_std_info(ch);
1422
1423                 /* Initialize vb2 queue */
1424                 q = &common->buffer_queue;
1425                 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1426                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1427                 q->drv_priv = ch;
1428                 q->ops = &video_qops;
1429                 q->mem_ops = &vb2_dma_contig_memops;
1430                 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1431                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1432                 q->min_queued_buffers = 1;
1433                 q->lock = &common->lock;
1434                 q->dev = vpif_dev;
1435
1436                 err = vb2_queue_init(q);
1437                 if (err) {
1438                         vpif_err("vpif_capture: vb2_queue_init() failed\n");
1439                         goto probe_out;
1440                 }
1441
1442                 INIT_LIST_HEAD(&common->dma_queue);
1443
1444                 /* Initialize the video_device structure */
1445                 vdev = &ch->video_dev;
1446                 strscpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1447                 vdev->release = video_device_release_empty;
1448                 vdev->fops = &vpif_fops;
1449                 vdev->ioctl_ops = &vpif_ioctl_ops;
1450                 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1451                 vdev->vfl_dir = VFL_DIR_RX;
1452                 vdev->queue = q;
1453                 vdev->lock = &common->lock;
1454                 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1455                 video_set_drvdata(&ch->video_dev, ch);
1456                 err = video_register_device(vdev,
1457                                             VFL_TYPE_VIDEO, (j ? 1 : 0));
1458                 if (err)
1459                         goto probe_out;
1460         }
1461
1462         v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1463         return 0;
1464
1465 probe_out:
1466         for (k = 0; k < j; k++) {
1467                 /* Get the pointer to the channel object */
1468                 ch = vpif_obj.dev[k];
1469                 /* Unregister video device */
1470                 video_unregister_device(&ch->video_dev);
1471         }
1472
1473         return err;
1474 }
1475
1476 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1477 {
1478         return vpif_probe_complete();
1479 }
1480
1481 static const struct v4l2_async_notifier_operations vpif_async_ops = {
1482         .bound = vpif_async_bound,
1483         .complete = vpif_async_complete,
1484 };
1485
1486 static struct vpif_capture_config *
1487 vpif_capture_get_pdata(struct platform_device *pdev,
1488                        struct v4l2_device *v4l2_dev)
1489 {
1490         struct device_node *endpoint;
1491         struct device_node *rem = NULL;
1492         struct vpif_capture_config *pdata;
1493         struct vpif_subdev_info *sdinfo;
1494         struct vpif_capture_chan_config *chan;
1495         unsigned int i;
1496
1497         v4l2_async_nf_init(&vpif_obj.notifier, v4l2_dev);
1498
1499         /*
1500          * DT boot: OF node from parent device contains
1501          * video ports & endpoints data.
1502          */
1503         if (pdev->dev.parent && pdev->dev.parent->of_node)
1504                 pdev->dev.of_node = pdev->dev.parent->of_node;
1505         if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
1506                 return pdev->dev.platform_data;
1507
1508         pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1509         if (!pdata)
1510                 return NULL;
1511         pdata->subdev_info =
1512                 devm_kcalloc(&pdev->dev,
1513                              VPIF_CAPTURE_NUM_CHANNELS,
1514                              sizeof(*pdata->subdev_info),
1515                              GFP_KERNEL);
1516
1517         if (!pdata->subdev_info)
1518                 return NULL;
1519
1520         i = 0;
1521         for_each_endpoint_of_node(pdev->dev.of_node, endpoint) {
1522                 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
1523                 unsigned int flags;
1524                 int err;
1525
1526                 rem = of_graph_get_remote_port_parent(endpoint);
1527                 if (!rem) {
1528                         dev_dbg(&pdev->dev, "Remote device at %pOF not found\n",
1529                                 endpoint);
1530                         goto done;
1531                 }
1532
1533                 sdinfo = &pdata->subdev_info[i];
1534                 chan = &pdata->chan_config[i];
1535                 chan->inputs = devm_kcalloc(&pdev->dev,
1536                                             VPIF_CAPTURE_NUM_CHANNELS,
1537                                             sizeof(*chan->inputs),
1538                                             GFP_KERNEL);
1539                 if (!chan->inputs)
1540                         goto err_cleanup;
1541
1542                 chan->input_count++;
1543                 chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA;
1544                 chan->inputs[i].input.std = V4L2_STD_ALL;
1545                 chan->inputs[i].input.capabilities = V4L2_IN_CAP_STD;
1546
1547                 err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
1548                                                  &bus_cfg);
1549                 if (err) {
1550                         dev_err(&pdev->dev, "Could not parse the endpoint\n");
1551                         of_node_put(rem);
1552                         goto done;
1553                 }
1554
1555                 dev_dbg(&pdev->dev, "Endpoint %pOF, bus_width = %d\n",
1556                         endpoint, bus_cfg.bus.parallel.bus_width);
1557
1558                 flags = bus_cfg.bus.parallel.flags;
1559
1560                 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
1561                         chan->vpif_if.hd_pol = 1;
1562
1563                 if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
1564                         chan->vpif_if.vd_pol = 1;
1565
1566                 dev_dbg(&pdev->dev, "Remote device %pOF found\n", rem);
1567                 sdinfo->name = rem->full_name;
1568
1569                 pdata->asd[i] = v4l2_async_nf_add_fwnode(&vpif_obj.notifier,
1570                                                          of_fwnode_handle(rem),
1571                                                          struct v4l2_async_connection);
1572                 if (IS_ERR(pdata->asd[i]))
1573                         goto err_cleanup;
1574
1575                 of_node_put(rem);
1576
1577                 i++;
1578                 if (i >= VPIF_CAPTURE_NUM_CHANNELS)
1579                         break;
1580         }
1581
1582 done:
1583         of_node_put(endpoint);
1584         pdata->asd_sizes[0] = i;
1585         pdata->subdev_count = i;
1586         pdata->card_name = "DA850/OMAP-L138 Video Capture";
1587
1588         return pdata;
1589
1590 err_cleanup:
1591         of_node_put(rem);
1592         of_node_put(endpoint);
1593         v4l2_async_nf_cleanup(&vpif_obj.notifier);
1594
1595         return NULL;
1596 }
1597
1598 /**
1599  * vpif_probe : This function probes the vpif capture driver
1600  * @pdev: platform device pointer
1601  *
1602  * This creates device entries by register itself to the V4L2 driver and
1603  * initializes fields of each channel objects
1604  */
1605 static __init int vpif_probe(struct platform_device *pdev)
1606 {
1607         struct vpif_subdev_info *subdevdata;
1608         struct i2c_adapter *i2c_adap;
1609         int subdev_count;
1610         int res_idx = 0;
1611         int i, err;
1612
1613         vpif_dev = &pdev->dev;
1614
1615         err = initialize_vpif();
1616         if (err) {
1617                 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1618                 return err;
1619         }
1620
1621         err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1622         if (err) {
1623                 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1624                 goto vpif_free;
1625         }
1626
1627         do {
1628                 int irq;
1629
1630                 err = platform_get_irq_optional(pdev, res_idx);
1631                 if (err < 0 && err != -ENXIO)
1632                         goto vpif_unregister;
1633                 if (err > 0)
1634                         irq = err;
1635                 else
1636                         break;
1637
1638                 err = devm_request_irq(&pdev->dev, irq, vpif_channel_isr,
1639                                        IRQF_SHARED, VPIF_DRIVER_NAME,
1640                                        (void *)(&vpif_obj.dev[res_idx]->channel_id));
1641                 if (err)
1642                         goto vpif_unregister;
1643         } while (++res_idx);
1644
1645         pdev->dev.platform_data =
1646                 vpif_capture_get_pdata(pdev, &vpif_obj.v4l2_dev);
1647         if (!pdev->dev.platform_data) {
1648                 err = -EINVAL;
1649                 dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
1650                 goto vpif_unregister;
1651         }
1652
1653         vpif_obj.config = pdev->dev.platform_data;
1654
1655         subdev_count = vpif_obj.config->subdev_count;
1656         vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL);
1657         if (!vpif_obj.sd) {
1658                 err = -ENOMEM;
1659                 goto probe_subdev_out;
1660         }
1661
1662         if (!vpif_obj.config->asd_sizes[0]) {
1663                 int i2c_id = vpif_obj.config->i2c_adapter_id;
1664
1665                 i2c_adap = i2c_get_adapter(i2c_id);
1666                 WARN_ON(!i2c_adap);
1667                 for (i = 0; i < subdev_count; i++) {
1668                         subdevdata = &vpif_obj.config->subdev_info[i];
1669                         vpif_obj.sd[i] =
1670                                 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1671                                                           i2c_adap,
1672                                                           &subdevdata->
1673                                                           board_info,
1674                                                           NULL);
1675
1676                         if (!vpif_obj.sd[i]) {
1677                                 vpif_err("Error registering v4l2 subdevice\n");
1678                                 err = -ENODEV;
1679                                 goto probe_subdev_out;
1680                         }
1681                         v4l2_info(&vpif_obj.v4l2_dev,
1682                                   "registered sub device %s\n",
1683                                    subdevdata->name);
1684                 }
1685                 err = vpif_probe_complete();
1686                 if (err)
1687                         goto probe_subdev_out;
1688         } else {
1689                 vpif_obj.notifier.ops = &vpif_async_ops;
1690                 err = v4l2_async_nf_register(&vpif_obj.notifier);
1691                 if (err) {
1692                         vpif_err("Error registering async notifier\n");
1693                         err = -EINVAL;
1694                         goto probe_subdev_out;
1695                 }
1696         }
1697
1698         return 0;
1699
1700 probe_subdev_out:
1701         v4l2_async_nf_cleanup(&vpif_obj.notifier);
1702         /* free sub devices memory */
1703         kfree(vpif_obj.sd);
1704 vpif_unregister:
1705         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1706 vpif_free:
1707         free_vpif_objs();
1708
1709         return err;
1710 }
1711
1712 /**
1713  * vpif_remove() - driver remove handler
1714  * @device: ptr to platform device structure
1715  *
1716  * The vidoe device is unregistered
1717  */
1718 static void vpif_remove(struct platform_device *device)
1719 {
1720         struct channel_obj *ch;
1721         int i;
1722
1723         v4l2_async_nf_unregister(&vpif_obj.notifier);
1724         v4l2_async_nf_cleanup(&vpif_obj.notifier);
1725         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1726
1727         kfree(vpif_obj.sd);
1728         /* un-register device */
1729         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1730                 /* Get the pointer to the channel object */
1731                 ch = vpif_obj.dev[i];
1732                 /* Unregister video device */
1733                 video_unregister_device(&ch->video_dev);
1734                 kfree(vpif_obj.dev[i]);
1735         }
1736 }
1737
1738 #ifdef CONFIG_PM_SLEEP
1739 /**
1740  * vpif_suspend: vpif device suspend
1741  * @dev: pointer to &struct device
1742  */
1743 static int vpif_suspend(struct device *dev)
1744 {
1745
1746         struct common_obj *common;
1747         struct channel_obj *ch;
1748         int i;
1749
1750         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1751                 /* Get the pointer to the channel object */
1752                 ch = vpif_obj.dev[i];
1753                 common = &ch->common[VPIF_VIDEO_INDEX];
1754
1755                 if (!vb2_start_streaming_called(&common->buffer_queue))
1756                         continue;
1757
1758                 mutex_lock(&common->lock);
1759                 /* Disable channel */
1760                 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1761                         enable_channel0(0);
1762                         channel0_intr_enable(0);
1763                 }
1764                 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1765                         ycmux_mode == 2) {
1766                         enable_channel1(0);
1767                         channel1_intr_enable(0);
1768                 }
1769                 mutex_unlock(&common->lock);
1770         }
1771
1772         return 0;
1773 }
1774
1775 /*
1776  * vpif_resume: vpif device suspend
1777  */
1778 static int vpif_resume(struct device *dev)
1779 {
1780         struct common_obj *common;
1781         struct channel_obj *ch;
1782         int i;
1783
1784         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1785                 /* Get the pointer to the channel object */
1786                 ch = vpif_obj.dev[i];
1787                 common = &ch->common[VPIF_VIDEO_INDEX];
1788
1789                 if (!vb2_start_streaming_called(&common->buffer_queue))
1790                         continue;
1791
1792                 mutex_lock(&common->lock);
1793                 /* Enable channel */
1794                 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1795                         enable_channel0(1);
1796                         channel0_intr_enable(1);
1797                 }
1798                 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1799                         ycmux_mode == 2) {
1800                         enable_channel1(1);
1801                         channel1_intr_enable(1);
1802                 }
1803                 mutex_unlock(&common->lock);
1804         }
1805
1806         return 0;
1807 }
1808 #endif
1809
1810 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1811
1812 static __refdata struct platform_driver vpif_driver = {
1813         .driver = {
1814                 .name   = VPIF_DRIVER_NAME,
1815                 .pm     = &vpif_pm_ops,
1816         },
1817         .probe = vpif_probe,
1818         .remove_new = vpif_remove,
1819 };
1820
1821 module_platform_driver(vpif_driver);