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  * TODO : add support for VBI & HBI data service
  16  *        add static buffer allocation
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/of_graph.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/slab.h>
  24
  25 #include <media/v4l2-fwnode.h>
  26 #include <media/v4l2-ioctl.h>
  27 #include <media/i2c/tvp514x.h>
  28 #include <media/v4l2-mediabus.h>
  29
  30 #include <linux/videodev2.h>
  31
  32 #include "vpif.h"
  33 #include "vpif_capture.h"
  34
  35 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
  36 MODULE_LICENSE("GPL");
  37 MODULE_VERSION(VPIF_CAPTURE_VERSION);
  38
  39 #define vpif_err(fmt, arg...)   v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
  40 #define vpif_dbg(level, debug, fmt, arg...)     \
  41                 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
  42
  43 static int debug = 1;
  44
  45 module_param(debug, int, 0644);
  46
  47 MODULE_PARM_DESC(debug, "Debug level 0-1");
  48
  49 #define VPIF_DRIVER_NAME        "vpif_capture"
  50 MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
  51
  52 /* global variables */
  53 static struct vpif_device vpif_obj = { {NULL} };
  54 static struct device *vpif_dev;
  55 static void vpif_calculate_offsets(struct channel_obj *ch);
  56 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
  57
  58 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
  59
  60 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
  61 static int ycmux_mode;
  62
  63 static inline
  64 struct vpif_cap_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
  65 {
  66         return container_of(vb, struct vpif_cap_buffer, vb);
  67 }
  68
  69 /**
  70  * vpif_buffer_prepare :  callback function for buffer prepare
  71  * @vb: ptr to vb2_buffer
  72  *
  73  * This is the callback function for buffer prepare when vb2_qbuf()
  74  * function is called. The buffer is prepared and user space virtual address
  75  * or user address is converted into  physical address
  76  */
  77 static int vpif_buffer_prepare(struct vb2_buffer *vb)
  78 {
  79         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
  80         struct vb2_queue *q = vb->vb2_queue;
  81         struct channel_obj *ch = vb2_get_drv_priv(q);
  82         struct common_obj *common;
  83         unsigned long addr;
  84
  85         vpif_dbg(2, debug, "vpif_buffer_prepare\n");
  86
  87         common = &ch->common[VPIF_VIDEO_INDEX];
  88
  89         vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
  90         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
  91                 return -EINVAL;
  92
  93         vbuf->field = common->fmt.fmt.pix.field;
  94
  95         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
  96         if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
  97                 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
  98                 !IS_ALIGNED((addr + common->ctop_off), 8) ||
  99                 !IS_ALIGNED((addr + common->cbtm_off), 8)) {
 100                 vpif_dbg(1, debug, "offset is not aligned\n");
 101                 return -EINVAL;
 102         }
 103
 104         return 0;
 105 }
 106
 107 /**
 108  * vpif_buffer_queue_setup : Callback function for buffer setup.
 109  * @vq: vb2_queue ptr
 110  * @nbuffers: ptr to number of buffers requested by application
 111  * @nplanes:: contains number of distinct video planes needed to hold a frame
 112  * @sizes[]: contains the size (in bytes) of each plane.
 113  * @alloc_devs: ptr to allocation context
 114  *
 115  * This callback function is called when reqbuf() is called to adjust
 116  * the buffer count and buffer size
 117  */
 118 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
 119                                 unsigned int *nbuffers, unsigned int *nplanes,
 120                                 unsigned int sizes[], struct device *alloc_devs[])
 121 {
 122         struct channel_obj *ch = vb2_get_drv_priv(vq);
 123         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 124         unsigned size = common->fmt.fmt.pix.sizeimage;
 125
 126         vpif_dbg(2, debug, "vpif_buffer_setup\n");
 127
 128         if (*nplanes) {
 129                 if (sizes[0] < size)
 130                         return -EINVAL;
 131                 size = sizes[0];
 132         }
 133
 134         if (vq->num_buffers + *nbuffers < 3)
 135                 *nbuffers = 3 - vq->num_buffers;
 136
 137         *nplanes = 1;
 138         sizes[0] = size;
 139
 140         /* Calculate the offset for Y and C data in the buffer */
 141         vpif_calculate_offsets(ch);
 142
 143         return 0;
 144 }
 145
 146 /**
 147  * vpif_buffer_queue : Callback function to add buffer to DMA queue
 148  * @vb: ptr to vb2_buffer
 149  */
 150 static void vpif_buffer_queue(struct vb2_buffer *vb)
 151 {
 152         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 153         struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
 154         struct vpif_cap_buffer *buf = to_vpif_buffer(vbuf);
 155         struct common_obj *common;
 156         unsigned long flags;
 157
 158         common = &ch->common[VPIF_VIDEO_INDEX];
 159
 160         vpif_dbg(2, debug, "vpif_buffer_queue\n");
 161
 162         spin_lock_irqsave(&common->irqlock, flags);
 163         /* add the buffer to the DMA queue */
 164         list_add_tail(&buf->list, &common->dma_queue);
 165         spin_unlock_irqrestore(&common->irqlock, flags);
 166 }
 167
 168 /**
 169  * vpif_start_streaming : Starts the DMA engine for streaming
 170  * @vb: ptr to vb2_buffer
 171  * @count: number of buffers
 172  */
 173 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
 174 {
 175         struct vpif_capture_config *vpif_config_data =
 176                                         vpif_dev->platform_data;
 177         struct channel_obj *ch = vb2_get_drv_priv(vq);
 178         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 179         struct vpif_params *vpif = &ch->vpifparams;
 180         struct vpif_cap_buffer *buf, *tmp;
 181         unsigned long addr, flags;
 182         int ret;
 183
 184         /* Initialize field_id */
 185         ch->field_id = 0;
 186
 187         /* configure 1 or 2 channel mode */
 188         if (vpif_config_data->setup_input_channel_mode) {
 189                 ret = vpif_config_data->
 190                         setup_input_channel_mode(vpif->std_info.ycmux_mode);
 191                 if (ret < 0) {
 192                         vpif_dbg(1, debug, "can't set vpif channel mode\n");
 193                         goto err;
 194                 }
 195         }
 196
 197         ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
 198         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 199                 vpif_dbg(1, debug, "stream on failed in subdev\n");
 200                 goto err;
 201         }
 202
 203         /* Call vpif_set_params function to set the parameters and addresses */
 204         ret = vpif_set_video_params(vpif, ch->channel_id);
 205         if (ret < 0) {
 206                 vpif_dbg(1, debug, "can't set video params\n");
 207                 goto err;
 208         }
 209
 210         ycmux_mode = ret;
 211         vpif_config_addr(ch, ret);
 212
 213         /* Get the next frame from the buffer queue */
 214         spin_lock_irqsave(&common->irqlock, flags);
 215         common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
 216                                     struct vpif_cap_buffer, list);
 217         /* Remove buffer from the buffer queue */
 218         list_del(&common->cur_frm->list);
 219         spin_unlock_irqrestore(&common->irqlock, flags);
 220
 221         addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
 222
 223         common->set_addr(addr + common->ytop_off,
 224                          addr + common->ybtm_off,
 225                          addr + common->ctop_off,
 226                          addr + common->cbtm_off);
 227
 228         /**
 229          * Set interrupt for both the fields in VPIF Register enable channel in
 230          * VPIF register
 231          */
 232         channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
 233         if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
 234                 channel0_intr_assert();
 235                 channel0_intr_enable(1);
 236                 enable_channel0(1);
 237         }
 238         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
 239                 ycmux_mode == 2) {
 240                 channel1_intr_assert();
 241                 channel1_intr_enable(1);
 242                 enable_channel1(1);
 243         }
 244
 245         return 0;
 246
 247 err:
 248         spin_lock_irqsave(&common->irqlock, flags);
 249         list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
 250                 list_del(&buf->list);
 251                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
 252         }
 253         spin_unlock_irqrestore(&common->irqlock, flags);
 254
 255         return ret;
 256 }
 257
 258 /**
 259  * vpif_stop_streaming : Stop the DMA engine
 260  * @vq: ptr to vb2_queue
 261  *
 262  * This callback stops the DMA engine and any remaining buffers
 263  * in the DMA queue are released.
 264  */
 265 static void vpif_stop_streaming(struct vb2_queue *vq)
 266 {
 267         struct channel_obj *ch = vb2_get_drv_priv(vq);
 268         struct common_obj *common;
 269         unsigned long flags;
 270         int ret;
 271
 272         common = &ch->common[VPIF_VIDEO_INDEX];
 273
 274         /* Disable channel as per its device type and channel id */
 275         if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
 276                 enable_channel0(0);
 277                 channel0_intr_enable(0);
 278         }
 279         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
 280                 ycmux_mode == 2) {
 281                 enable_channel1(0);
 282                 channel1_intr_enable(0);
 283         }
 284
 285         ycmux_mode = 0;
 286
 287         ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
 288         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
 289                 vpif_dbg(1, debug, "stream off failed in subdev\n");
 290
 291         /* release all active buffers */
 292         if (common->cur_frm == common->next_frm) {
 293                 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
 294                                 VB2_BUF_STATE_ERROR);
 295         } else {
 296                 if (common->cur_frm)
 297                         vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
 298                                         VB2_BUF_STATE_ERROR);
 299                 if (common->next_frm)
 300                         vb2_buffer_done(&common->next_frm->vb.vb2_buf,
 301                                         VB2_BUF_STATE_ERROR);
 302         }
 303
 304         spin_lock_irqsave(&common->irqlock, flags);
 305         while (!list_empty(&common->dma_queue)) {
 306                 common->next_frm = list_entry(common->dma_queue.next,
 307                                                 struct vpif_cap_buffer, list);
 308                 list_del(&common->next_frm->list);
 309                 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
 310                                 VB2_BUF_STATE_ERROR);
 311         }
 312         spin_unlock_irqrestore(&common->irqlock, flags);
 313 }
 314
 315 static struct vb2_ops video_qops = {
 316         .queue_setup            = vpif_buffer_queue_setup,
 317         .buf_prepare            = vpif_buffer_prepare,
 318         .start_streaming        = vpif_start_streaming,
 319         .stop_streaming         = vpif_stop_streaming,
 320         .buf_queue              = vpif_buffer_queue,
 321         .wait_prepare           = vb2_ops_wait_prepare,
 322         .wait_finish            = vb2_ops_wait_finish,
 323 };
 324
 325 /**
 326  * vpif_process_buffer_complete: process a completed buffer
 327  * @common: ptr to common channel object
 328  *
 329  * This function time stamp the buffer and mark it as DONE. It also
 330  * wake up any process waiting on the QUEUE and set the next buffer
 331  * as current
 332  */
 333 static void vpif_process_buffer_complete(struct common_obj *common)
 334 {
 335         common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
 336         vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
 337         /* Make curFrm pointing to nextFrm */
 338         common->cur_frm = common->next_frm;
 339 }
 340
 341 /**
 342  * vpif_schedule_next_buffer: set next buffer address for capture
 343  * @common : ptr to common channel object
 344  *
 345  * This function will get next buffer from the dma queue and
 346  * set the buffer address in the vpif register for capture.
 347  * the buffer is marked active
 348  */
 349 static void vpif_schedule_next_buffer(struct common_obj *common)
 350 {
 351         unsigned long addr = 0;
 352
 353         spin_lock(&common->irqlock);
 354         common->next_frm = list_entry(common->dma_queue.next,
 355                                      struct vpif_cap_buffer, list);
 356         /* Remove that buffer from the buffer queue */
 357         list_del(&common->next_frm->list);
 358         spin_unlock(&common->irqlock);
 359         addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
 360
 361         /* Set top and bottom field addresses in VPIF registers */
 362         common->set_addr(addr + common->ytop_off,
 363                          addr + common->ybtm_off,
 364                          addr + common->ctop_off,
 365                          addr + common->cbtm_off);
 366 }
 367
 368 /**
 369  * vpif_channel_isr : ISR handler for vpif capture
 370  * @irq: irq number
 371  * @dev_id: dev_id ptr
 372  *
 373  * It changes status of the captured buffer, takes next buffer from the queue
 374  * and sets its address in VPIF registers
 375  */
 376 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
 377 {
 378         struct vpif_device *dev = &vpif_obj;
 379         struct common_obj *common;
 380         struct channel_obj *ch;
 381         int channel_id;
 382         int fid = -1, i;
 383
 384         channel_id = *(int *)(dev_id);
 385         if (!vpif_intr_status(channel_id))
 386                 return IRQ_NONE;
 387
 388         ch = dev->dev[channel_id];
 389
 390         for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
 391                 common = &ch->common[i];
 392                 /* skip If streaming is not started in this channel */
 393                 /* Check the field format */
 394                 if (1 == ch->vpifparams.std_info.frm_fmt ||
 395                     common->fmt.fmt.pix.field == V4L2_FIELD_NONE) {
 396                         /* Progressive mode */
 397                         spin_lock(&common->irqlock);
 398                         if (list_empty(&common->dma_queue)) {
 399                                 spin_unlock(&common->irqlock);
 400                                 continue;
 401                         }
 402                         spin_unlock(&common->irqlock);
 403
 404                         if (!channel_first_int[i][channel_id])
 405                                 vpif_process_buffer_complete(common);
 406
 407                         channel_first_int[i][channel_id] = 0;
 408
 409                         vpif_schedule_next_buffer(common);
 410
 411
 412                         channel_first_int[i][channel_id] = 0;
 413                 } else {
 414                         /**
 415                          * Interlaced mode. If it is first interrupt, ignore
 416                          * it
 417                          */
 418                         if (channel_first_int[i][channel_id]) {
 419                                 channel_first_int[i][channel_id] = 0;
 420                                 continue;
 421                         }
 422                         if (0 == i) {
 423                                 ch->field_id ^= 1;
 424                                 /* Get field id from VPIF registers */
 425                                 fid = vpif_channel_getfid(ch->channel_id);
 426                                 if (fid != ch->field_id) {
 427                                         /**
 428                                          * If field id does not match stored
 429                                          * field id, make them in sync
 430                                          */
 431                                         if (0 == fid)
 432                                                 ch->field_id = fid;
 433                                         return IRQ_HANDLED;
 434                                 }
 435                         }
 436                         /* device field id and local field id are in sync */
 437                         if (0 == fid) {
 438                                 /* this is even field */
 439                                 if (common->cur_frm == common->next_frm)
 440                                         continue;
 441
 442                                 /* mark the current buffer as done */
 443                                 vpif_process_buffer_complete(common);
 444                         } else if (1 == fid) {
 445                                 /* odd field */
 446                                 spin_lock(&common->irqlock);
 447                                 if (list_empty(&common->dma_queue) ||
 448                                     (common->cur_frm != common->next_frm)) {
 449                                         spin_unlock(&common->irqlock);
 450                                         continue;
 451                                 }
 452                                 spin_unlock(&common->irqlock);
 453
 454                                 vpif_schedule_next_buffer(common);
 455                         }
 456                 }
 457         }
 458         return IRQ_HANDLED;
 459 }
 460
 461 /**
 462  * vpif_update_std_info() - update standard related info
 463  * @ch: ptr to channel object
 464  *
 465  * For a given standard selected by application, update values
 466  * in the device data structures
 467  */
 468 static int vpif_update_std_info(struct channel_obj *ch)
 469 {
 470         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 471         struct vpif_params *vpifparams = &ch->vpifparams;
 472         const struct vpif_channel_config_params *config;
 473         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
 474         struct video_obj *vid_ch = &ch->video;
 475         int index;
 476         struct v4l2_pix_format *pixfmt = &common->fmt.fmt.pix;
 477
 478         vpif_dbg(2, debug, "vpif_update_std_info\n");
 479
 480         /*
 481          * if called after try_fmt or g_fmt, there will already be a size
 482          * so use that by default.
 483          */
 484         if (pixfmt->width && pixfmt->height) {
 485                 if (pixfmt->field == V4L2_FIELD_ANY ||
 486                     pixfmt->field == V4L2_FIELD_NONE)
 487                         pixfmt->field = V4L2_FIELD_NONE;
 488
 489                 vpifparams->iface.if_type = VPIF_IF_BT656;
 490                 if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10 ||
 491                     pixfmt->pixelformat == V4L2_PIX_FMT_SBGGR8)
 492                         vpifparams->iface.if_type = VPIF_IF_RAW_BAYER;
 493
 494                 if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10)
 495                         vpifparams->params.data_sz = 1; /* 10 bits/pixel.  */
 496
 497                 /*
 498                  * For raw formats from camera sensors, we don't need
 499                  * the std_info from table lookup, so nothing else to do here.
 500                  */
 501                 if (vpifparams->iface.if_type == VPIF_IF_RAW_BAYER) {
 502                         memset(std_info, 0, sizeof(struct vpif_channel_config_params));
 503                         vpifparams->std_info.capture_format = 1; /* CCD/raw mode */
 504                         return 0;
 505                 }
 506         }
 507
 508         for (index = 0; index < vpif_ch_params_count; index++) {
 509                 config = &vpif_ch_params[index];
 510                 if (config->hd_sd == 0) {
 511                         vpif_dbg(2, debug, "SD format\n");
 512                         if (config->stdid & vid_ch->stdid) {
 513                                 memcpy(std_info, config, sizeof(*config));
 514                                 break;
 515                         }
 516                 } else {
 517                         vpif_dbg(2, debug, "HD format\n");
 518                         if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
 519                                 sizeof(vid_ch->dv_timings))) {
 520                                 memcpy(std_info, config, sizeof(*config));
 521                                 break;
 522                         }
 523                 }
 524         }
 525
 526         /* standard not found */
 527         if (index == vpif_ch_params_count)
 528                 return -EINVAL;
 529
 530         common->fmt.fmt.pix.width = std_info->width;
 531         common->width = std_info->width;
 532         common->fmt.fmt.pix.height = std_info->height;
 533         common->height = std_info->height;
 534         common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
 535         common->fmt.fmt.pix.bytesperline = std_info->width;
 536         vpifparams->video_params.hpitch = std_info->width;
 537         vpifparams->video_params.storage_mode = std_info->frm_fmt;
 538
 539         if (vid_ch->stdid)
 540                 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 541         else
 542                 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
 543
 544         if (ch->vpifparams.std_info.frm_fmt)
 545                 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
 546         else
 547                 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
 548
 549         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
 550                 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
 551         else
 552                 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV16;
 553
 554         common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 555
 556         return 0;
 557 }
 558
 559 /**
 560  * vpif_calculate_offsets : This function calculates buffers offsets
 561  * @ch : ptr to channel object
 562  *
 563  * This function calculates buffer offsets for Y and C in the top and
 564  * bottom field
 565  */
 566 static void vpif_calculate_offsets(struct channel_obj *ch)
 567 {
 568         unsigned int hpitch, sizeimage;
 569         struct video_obj *vid_ch = &(ch->video);
 570         struct vpif_params *vpifparams = &ch->vpifparams;
 571         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 572         enum v4l2_field field = common->fmt.fmt.pix.field;
 573
 574         vpif_dbg(2, debug, "vpif_calculate_offsets\n");
 575
 576         if (V4L2_FIELD_ANY == field) {
 577                 if (vpifparams->std_info.frm_fmt)
 578                         vid_ch->buf_field = V4L2_FIELD_NONE;
 579                 else
 580                         vid_ch->buf_field = V4L2_FIELD_INTERLACED;
 581         } else
 582                 vid_ch->buf_field = common->fmt.fmt.pix.field;
 583
 584         sizeimage = common->fmt.fmt.pix.sizeimage;
 585
 586         hpitch = common->fmt.fmt.pix.bytesperline;
 587
 588         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 589             (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
 590                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 591                 common->ytop_off = 0;
 592                 common->ybtm_off = hpitch;
 593                 common->ctop_off = sizeimage / 2;
 594                 common->cbtm_off = sizeimage / 2 + hpitch;
 595         } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
 596                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 597                 common->ytop_off = 0;
 598                 common->ybtm_off = sizeimage / 4;
 599                 common->ctop_off = sizeimage / 2;
 600                 common->cbtm_off = common->ctop_off + sizeimage / 4;
 601         } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
 602                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 603                 common->ybtm_off = 0;
 604                 common->ytop_off = sizeimage / 4;
 605                 common->cbtm_off = sizeimage / 2;
 606                 common->ctop_off = common->cbtm_off + sizeimage / 4;
 607         }
 608         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 609             (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
 610                 vpifparams->video_params.storage_mode = 1;
 611         else
 612                 vpifparams->video_params.storage_mode = 0;
 613
 614         if (1 == vpifparams->std_info.frm_fmt)
 615                 vpifparams->video_params.hpitch =
 616                     common->fmt.fmt.pix.bytesperline;
 617         else {
 618                 if ((field == V4L2_FIELD_ANY)
 619                     || (field == V4L2_FIELD_INTERLACED))
 620                         vpifparams->video_params.hpitch =
 621                             common->fmt.fmt.pix.bytesperline * 2;
 622                 else
 623                         vpifparams->video_params.hpitch =
 624                             common->fmt.fmt.pix.bytesperline;
 625         }
 626
 627         ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
 628 }
 629
 630 /**
 631  * vpif_get_default_field() - Get default field type based on interface
 632  * @vpif_params - ptr to vpif params
 633  */
 634 static inline enum v4l2_field vpif_get_default_field(
 635                                 struct vpif_interface *iface)
 636 {
 637         return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
 638                                                 V4L2_FIELD_INTERLACED;
 639 }
 640
 641 /**
 642  * vpif_config_addr() - function to configure buffer address in vpif
 643  * @ch - channel ptr
 644  * @muxmode - channel mux mode
 645  */
 646 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
 647 {
 648         struct common_obj *common;
 649
 650         vpif_dbg(2, debug, "vpif_config_addr\n");
 651
 652         common = &(ch->common[VPIF_VIDEO_INDEX]);
 653
 654         if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
 655                 common->set_addr = ch1_set_videobuf_addr;
 656         else if (2 == muxmode)
 657                 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
 658         else
 659                 common->set_addr = ch0_set_videobuf_addr;
 660 }
 661
 662 /**
 663  * vpif_input_to_subdev() - Maps input to sub device
 664  * @vpif_cfg - global config ptr
 665  * @chan_cfg - channel config ptr
 666  * @input_index - Given input index from application
 667  *
 668  * lookup the sub device information for a given input index.
 669  * we report all the inputs to application. inputs table also
 670  * has sub device name for the each input
 671  */
 672 static int vpif_input_to_subdev(
 673                 struct vpif_capture_config *vpif_cfg,
 674                 struct vpif_capture_chan_config *chan_cfg,
 675                 int input_index)
 676 {
 677         struct vpif_subdev_info *subdev_info;
 678         const char *subdev_name;
 679         int i;
 680
 681         vpif_dbg(2, debug, "vpif_input_to_subdev\n");
 682
 683         if (!chan_cfg)
 684                 return -1;
 685         if (input_index >= chan_cfg->input_count)
 686                 return -1;
 687         subdev_name = chan_cfg->inputs[input_index].subdev_name;
 688         if (!subdev_name)
 689                 return -1;
 690
 691         /* loop through the sub device list to get the sub device info */
 692         for (i = 0; i < vpif_cfg->subdev_count; i++) {
 693                 subdev_info = &vpif_cfg->subdev_info[i];
 694                 if (subdev_info && !strcmp(subdev_info->name, subdev_name))
 695                         return i;
 696         }
 697         return -1;
 698 }
 699
 700 /**
 701  * vpif_set_input() - Select an input
 702  * @vpif_cfg - global config ptr
 703  * @ch - channel
 704  * @_index - Given input index from application
 705  *
 706  * Select the given input.
 707  */
 708 static int vpif_set_input(
 709                 struct vpif_capture_config *vpif_cfg,
 710                 struct channel_obj *ch,
 711                 int index)
 712 {
 713         struct vpif_capture_chan_config *chan_cfg =
 714                         &vpif_cfg->chan_config[ch->channel_id];
 715         struct vpif_subdev_info *subdev_info = NULL;
 716         struct v4l2_subdev *sd = NULL;
 717         u32 input = 0, output = 0;
 718         int sd_index;
 719         int ret;
 720
 721         sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
 722         if (sd_index >= 0) {
 723                 sd = vpif_obj.sd[sd_index];
 724                 subdev_info = &vpif_cfg->subdev_info[sd_index];
 725         } else {
 726                 /* no subdevice, no input to setup */
 727                 return 0;
 728         }
 729
 730         /* first setup input path from sub device to vpif */
 731         if (sd && vpif_cfg->setup_input_path) {
 732                 ret = vpif_cfg->setup_input_path(ch->channel_id,
 733                                        subdev_info->name);
 734                 if (ret < 0) {
 735                         vpif_dbg(1, debug, "couldn't setup input path for the" \
 736                         " sub device %s, for input index %d\n",
 737                         subdev_info->name, index);
 738                         return ret;
 739                 }
 740         }
 741
 742         if (sd) {
 743                 input = chan_cfg->inputs[index].input_route;
 744                 output = chan_cfg->inputs[index].output_route;
 745                 ret = v4l2_subdev_call(sd, video, s_routing,
 746                                 input, output, 0);
 747                 if (ret < 0 && ret != -ENOIOCTLCMD) {
 748                         vpif_dbg(1, debug, "Failed to set input\n");
 749                         return ret;
 750                 }
 751         }
 752         ch->input_idx = index;
 753         ch->sd = sd;
 754         /* copy interface parameters to vpif */
 755         ch->vpifparams.iface = chan_cfg->vpif_if;
 756
 757         /* update tvnorms from the sub device input info */
 758         ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
 759         return 0;
 760 }
 761
 762 /**
 763  * vpif_querystd() - querystd handler
 764  * @file: file ptr
 765  * @priv: file handle
 766  * @std_id: ptr to std id
 767  *
 768  * This function is called to detect standard at the selected input
 769  */
 770 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
 771 {
 772         struct video_device *vdev = video_devdata(file);
 773         struct channel_obj *ch = video_get_drvdata(vdev);
 774         int ret;
 775
 776         vpif_dbg(2, debug, "vpif_querystd\n");
 777
 778         /* Call querystd function of decoder device */
 779         ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
 780
 781         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
 782                 return -ENODATA;
 783         if (ret) {
 784                 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
 785                 return ret;
 786         }
 787
 788         return 0;
 789 }
 790
 791 /**
 792  * vpif_g_std() - get STD handler
 793  * @file: file ptr
 794  * @priv: file handle
 795  * @std_id: ptr to std id
 796  */
 797 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
 798 {
 799         struct vpif_capture_config *config = vpif_dev->platform_data;
 800         struct video_device *vdev = video_devdata(file);
 801         struct channel_obj *ch = video_get_drvdata(vdev);
 802         struct vpif_capture_chan_config *chan_cfg;
 803         struct v4l2_input input;
 804
 805         vpif_dbg(2, debug, "vpif_g_std\n");
 806
 807         if (!config->chan_config[ch->channel_id].inputs)
 808                 return -ENODATA;
 809
 810         chan_cfg = &config->chan_config[ch->channel_id];
 811         input = chan_cfg->inputs[ch->input_idx].input;
 812         if (input.capabilities != V4L2_IN_CAP_STD)
 813                 return -ENODATA;
 814
 815         *std = ch->video.stdid;
 816         return 0;
 817 }
 818
 819 /**
 820  * vpif_s_std() - set STD handler
 821  * @file: file ptr
 822  * @priv: file handle
 823  * @std_id: ptr to std id
 824  */
 825 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
 826 {
 827         struct vpif_capture_config *config = vpif_dev->platform_data;
 828         struct video_device *vdev = video_devdata(file);
 829         struct channel_obj *ch = video_get_drvdata(vdev);
 830         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 831         struct vpif_capture_chan_config *chan_cfg;
 832         struct v4l2_input input;
 833         int ret;
 834
 835         vpif_dbg(2, debug, "vpif_s_std\n");
 836
 837         if (!config->chan_config[ch->channel_id].inputs)
 838                 return -ENODATA;
 839
 840         chan_cfg = &config->chan_config[ch->channel_id];
 841         input = chan_cfg->inputs[ch->input_idx].input;
 842         if (input.capabilities != V4L2_IN_CAP_STD)
 843                 return -ENODATA;
 844
 845         if (vb2_is_busy(&common->buffer_queue))
 846                 return -EBUSY;
 847
 848         /* Call encoder subdevice function to set the standard */
 849         ch->video.stdid = std_id;
 850         memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
 851
 852         /* Get the information about the standard */
 853         if (vpif_update_std_info(ch)) {
 854                 vpif_err("Error getting the standard info\n");
 855                 return -EINVAL;
 856         }
 857
 858         /* set standard in the sub device */
 859         ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
 860         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 861                 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
 862                 return ret;
 863         }
 864         return 0;
 865 }
 866
 867 /**
 868  * vpif_enum_input() - ENUMINPUT handler
 869  * @file: file ptr
 870  * @priv: file handle
 871  * @input: ptr to input structure
 872  */
 873 static int vpif_enum_input(struct file *file, void *priv,
 874                                 struct v4l2_input *input)
 875 {
 876
 877         struct vpif_capture_config *config = vpif_dev->platform_data;
 878         struct video_device *vdev = video_devdata(file);
 879         struct channel_obj *ch = video_get_drvdata(vdev);
 880         struct vpif_capture_chan_config *chan_cfg;
 881
 882         chan_cfg = &config->chan_config[ch->channel_id];
 883
 884         if (input->index >= chan_cfg->input_count)
 885                 return -EINVAL;
 886
 887         memcpy(input, &chan_cfg->inputs[input->index].input,
 888                 sizeof(*input));
 889         return 0;
 890 }
 891
 892 /**
 893  * vpif_g_input() - Get INPUT handler
 894  * @file: file ptr
 895  * @priv: file handle
 896  * @index: ptr to input index
 897  */
 898 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
 899 {
 900         struct video_device *vdev = video_devdata(file);
 901         struct channel_obj *ch = video_get_drvdata(vdev);
 902
 903         *index = ch->input_idx;
 904         return 0;
 905 }
 906
 907 /**
 908  * vpif_s_input() - Set INPUT handler
 909  * @file: file ptr
 910  * @priv: file handle
 911  * @index: input index
 912  */
 913 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
 914 {
 915         struct vpif_capture_config *config = vpif_dev->platform_data;
 916         struct video_device *vdev = video_devdata(file);
 917         struct channel_obj *ch = video_get_drvdata(vdev);
 918         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 919         struct vpif_capture_chan_config *chan_cfg;
 920
 921         chan_cfg = &config->chan_config[ch->channel_id];
 922
 923         if (index >= chan_cfg->input_count)
 924                 return -EINVAL;
 925
 926         if (vb2_is_busy(&common->buffer_queue))
 927                 return -EBUSY;
 928
 929         return vpif_set_input(config, ch, index);
 930 }
 931
 932 /**
 933  * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
 934  * @file: file ptr
 935  * @priv: file handle
 936  * @index: input index
 937  */
 938 static int vpif_enum_fmt_vid_cap(struct file *file, void  *priv,
 939                                         struct v4l2_fmtdesc *fmt)
 940 {
 941         struct video_device *vdev = video_devdata(file);
 942         struct channel_obj *ch = video_get_drvdata(vdev);
 943
 944         if (fmt->index != 0) {
 945                 vpif_dbg(1, debug, "Invalid format index\n");
 946                 return -EINVAL;
 947         }
 948
 949         /* Fill in the information about format */
 950         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
 951                 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 952                 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
 953                 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
 954         } else {
 955                 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 956                 strcpy(fmt->description, "YCbCr4:2:2 Semi-Planar");
 957                 fmt->pixelformat = V4L2_PIX_FMT_NV16;
 958         }
 959         return 0;
 960 }
 961
 962 /**
 963  * vpif_try_fmt_vid_cap() - TRY_FMT handler
 964  * @file: file ptr
 965  * @priv: file handle
 966  * @fmt: ptr to v4l2 format structure
 967  */
 968 static int vpif_try_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 v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 974         struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
 975
 976         common->fmt = *fmt;
 977         vpif_update_std_info(ch);
 978
 979         pixfmt->field = common->fmt.fmt.pix.field;
 980         pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
 981         pixfmt->bytesperline = common->fmt.fmt.pix.width;
 982         pixfmt->width = common->fmt.fmt.pix.width;
 983         pixfmt->height = common->fmt.fmt.pix.height;
 984         pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
 985         if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10) {
 986                 pixfmt->bytesperline = common->fmt.fmt.pix.width * 2;
 987                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 988         }
 989         pixfmt->priv = 0;
 990
 991         dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d pixelformat=0x%08x, field=%d, size=%d\n", __func__,
 992                 pixfmt->width, pixfmt->height,
 993                 pixfmt->bytesperline, pixfmt->pixelformat,
 994                 pixfmt->field, pixfmt->sizeimage);
 995
 996         return 0;
 997 }
 998
 999
1000 /**
1001  * vpif_g_fmt_vid_cap() - Set INPUT handler
1002  * @file: file ptr
1003  * @priv: file handle
1004  * @fmt: ptr to v4l2 format structure
1005  */
1006 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
1007                                 struct v4l2_format *fmt)
1008 {
1009         struct video_device *vdev = video_devdata(file);
1010         struct channel_obj *ch = video_get_drvdata(vdev);
1011         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1012         struct v4l2_pix_format *pix_fmt = &fmt->fmt.pix;
1013         struct v4l2_subdev_format format = {
1014                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1015         };
1016         struct v4l2_mbus_framefmt *mbus_fmt = &format.format;
1017         int ret;
1018
1019         /* Check the validity of the buffer type */
1020         if (common->fmt.type != fmt->type)
1021                 return -EINVAL;
1022
1023         /* By default, use currently set fmt */
1024         *fmt = common->fmt;
1025
1026         /* If subdev has get_fmt, use that to override */
1027         ret = v4l2_subdev_call(ch->sd, pad, get_fmt, NULL, &format);
1028         if (!ret && mbus_fmt->code) {
1029                 v4l2_fill_pix_format(pix_fmt, mbus_fmt);
1030                 pix_fmt->bytesperline = pix_fmt->width;
1031                 if (mbus_fmt->code == MEDIA_BUS_FMT_SGRBG10_1X10) {
1032                         /* e.g. mt9v032 */
1033                         pix_fmt->pixelformat = V4L2_PIX_FMT_SGRBG10;
1034                         pix_fmt->bytesperline = pix_fmt->width * 2;
1035                 } else if (mbus_fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) {
1036                         /* e.g. tvp514x */
1037                         pix_fmt->pixelformat = V4L2_PIX_FMT_NV16;
1038                         pix_fmt->bytesperline = pix_fmt->width * 2;
1039                 } else {
1040                         dev_warn(vpif_dev, "%s: Unhandled media-bus format 0x%x\n",
1041                                  __func__, mbus_fmt->code);
1042                 }
1043                 pix_fmt->sizeimage = pix_fmt->bytesperline * pix_fmt->height;
1044                 dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d, pixelformat=0x%08x, code=0x%x, field=%d, size=%d\n", __func__,
1045                         pix_fmt->width, pix_fmt->height,
1046                         pix_fmt->bytesperline, pix_fmt->pixelformat,
1047                         mbus_fmt->code, pix_fmt->field, pix_fmt->sizeimage);
1048
1049                 common->fmt = *fmt;
1050                 vpif_update_std_info(ch);
1051         }
1052
1053         return 0;
1054 }
1055
1056 /**
1057  * vpif_s_fmt_vid_cap() - Set FMT handler
1058  * @file: file ptr
1059  * @priv: file handle
1060  * @fmt: ptr to v4l2 format structure
1061  */
1062 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
1063                                 struct v4l2_format *fmt)
1064 {
1065         struct video_device *vdev = video_devdata(file);
1066         struct channel_obj *ch = video_get_drvdata(vdev);
1067         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1068         int ret;
1069
1070         vpif_dbg(2, debug, "%s\n", __func__);
1071
1072         if (vb2_is_busy(&common->buffer_queue))
1073                 return -EBUSY;
1074
1075         ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1076         if (ret)
1077                 return ret;
1078
1079         /* store the format in the channel object */
1080         common->fmt = *fmt;
1081         return 0;
1082 }
1083
1084 /**
1085  * vpif_querycap() - QUERYCAP handler
1086  * @file: file ptr
1087  * @priv: file handle
1088  * @cap: ptr to v4l2_capability structure
1089  */
1090 static int vpif_querycap(struct file *file, void  *priv,
1091                                 struct v4l2_capability *cap)
1092 {
1093         struct vpif_capture_config *config = vpif_dev->platform_data;
1094
1095         cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1096         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1097         strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1098         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1099                  dev_name(vpif_dev));
1100         strlcpy(cap->card, config->card_name, sizeof(cap->card));
1101
1102         return 0;
1103 }
1104
1105 /**
1106  * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1107  * @file: file ptr
1108  * @priv: file handle
1109  * @timings: input timings
1110  */
1111 static int
1112 vpif_enum_dv_timings(struct file *file, void *priv,
1113                      struct v4l2_enum_dv_timings *timings)
1114 {
1115         struct vpif_capture_config *config = vpif_dev->platform_data;
1116         struct video_device *vdev = video_devdata(file);
1117         struct channel_obj *ch = video_get_drvdata(vdev);
1118         struct vpif_capture_chan_config *chan_cfg;
1119         struct v4l2_input input;
1120         int ret;
1121
1122         if (!config->chan_config[ch->channel_id].inputs)
1123                 return -ENODATA;
1124
1125         chan_cfg = &config->chan_config[ch->channel_id];
1126         input = chan_cfg->inputs[ch->input_idx].input;
1127         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1128                 return -ENODATA;
1129
1130         timings->pad = 0;
1131
1132         ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1133         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1134                 return -EINVAL;
1135
1136         return ret;
1137 }
1138
1139 /**
1140  * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1141  * @file: file ptr
1142  * @priv: file handle
1143  * @timings: input timings
1144  */
1145 static int
1146 vpif_query_dv_timings(struct file *file, void *priv,
1147                       struct v4l2_dv_timings *timings)
1148 {
1149         struct vpif_capture_config *config = vpif_dev->platform_data;
1150         struct video_device *vdev = video_devdata(file);
1151         struct channel_obj *ch = video_get_drvdata(vdev);
1152         struct vpif_capture_chan_config *chan_cfg;
1153         struct v4l2_input input;
1154         int ret;
1155
1156         if (!config->chan_config[ch->channel_id].inputs)
1157                 return -ENODATA;
1158
1159         chan_cfg = &config->chan_config[ch->channel_id];
1160         input = chan_cfg->inputs[ch->input_idx].input;
1161         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1162                 return -ENODATA;
1163
1164         ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1165         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1166                 return -ENODATA;
1167
1168         return ret;
1169 }
1170
1171 /**
1172  * vpif_s_dv_timings() - S_DV_TIMINGS handler
1173  * @file: file ptr
1174  * @priv: file handle
1175  * @timings: digital video timings
1176  */
1177 static int vpif_s_dv_timings(struct file *file, void *priv,
1178                 struct v4l2_dv_timings *timings)
1179 {
1180         struct vpif_capture_config *config = vpif_dev->platform_data;
1181         struct video_device *vdev = video_devdata(file);
1182         struct channel_obj *ch = video_get_drvdata(vdev);
1183         struct vpif_params *vpifparams = &ch->vpifparams;
1184         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1185         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1186         struct video_obj *vid_ch = &ch->video;
1187         struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1188         struct vpif_capture_chan_config *chan_cfg;
1189         struct v4l2_input input;
1190         int ret;
1191
1192         if (!config->chan_config[ch->channel_id].inputs)
1193                 return -ENODATA;
1194
1195         chan_cfg = &config->chan_config[ch->channel_id];
1196         input = chan_cfg->inputs[ch->input_idx].input;
1197         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1198                 return -ENODATA;
1199
1200         if (timings->type != V4L2_DV_BT_656_1120) {
1201                 vpif_dbg(2, debug, "Timing type not defined\n");
1202                 return -EINVAL;
1203         }
1204
1205         if (vb2_is_busy(&common->buffer_queue))
1206                 return -EBUSY;
1207
1208         /* Configure subdevice timings, if any */
1209         ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1210         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1211                 ret = 0;
1212         if (ret < 0) {
1213                 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1214                 return ret;
1215         }
1216
1217         if (!(timings->bt.width && timings->bt.height &&
1218                                 (timings->bt.hbackporch ||
1219                                  timings->bt.hfrontporch ||
1220                                  timings->bt.hsync) &&
1221                                 timings->bt.vfrontporch &&
1222                                 (timings->bt.vbackporch ||
1223                                  timings->bt.vsync))) {
1224                 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");
1225                 return -EINVAL;
1226         }
1227
1228         vid_ch->dv_timings = *timings;
1229
1230         /* Configure video port timings */
1231
1232         std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1233         std_info->sav2eav = bt->width;
1234
1235         std_info->l1 = 1;
1236         std_info->l3 = bt->vsync + bt->vbackporch + 1;
1237
1238         std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1239         if (bt->interlaced) {
1240                 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1241                         std_info->l5 = std_info->vsize/2 -
1242                                 (bt->vfrontporch - 1);
1243                         std_info->l7 = std_info->vsize/2 + 1;
1244                         std_info->l9 = std_info->l7 + bt->il_vsync +
1245                                 bt->il_vbackporch + 1;
1246                         std_info->l11 = std_info->vsize -
1247                                 (bt->il_vfrontporch - 1);
1248                 } else {
1249                         vpif_dbg(2, debug, "Required timing values for interlaced BT format missing\n");
1250                         return -EINVAL;
1251                 }
1252         } else {
1253                 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1254         }
1255         strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1256         std_info->width = bt->width;
1257         std_info->height = bt->height;
1258         std_info->frm_fmt = bt->interlaced ? 0 : 1;
1259         std_info->ycmux_mode = 0;
1260         std_info->capture_format = 0;
1261         std_info->vbi_supported = 0;
1262         std_info->hd_sd = 1;
1263         std_info->stdid = 0;
1264
1265         vid_ch->stdid = 0;
1266         return 0;
1267 }
1268
1269 /**
1270  * vpif_g_dv_timings() - G_DV_TIMINGS handler
1271  * @file: file ptr
1272  * @priv: file handle
1273  * @timings: digital video timings
1274  */
1275 static int vpif_g_dv_timings(struct file *file, void *priv,
1276                 struct v4l2_dv_timings *timings)
1277 {
1278         struct vpif_capture_config *config = vpif_dev->platform_data;
1279         struct video_device *vdev = video_devdata(file);
1280         struct channel_obj *ch = video_get_drvdata(vdev);
1281         struct video_obj *vid_ch = &ch->video;
1282         struct vpif_capture_chan_config *chan_cfg;
1283         struct v4l2_input input;
1284
1285         if (!config->chan_config[ch->channel_id].inputs)
1286                 return -ENODATA;
1287
1288         chan_cfg = &config->chan_config[ch->channel_id];
1289         input = chan_cfg->inputs[ch->input_idx].input;
1290         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1291                 return -ENODATA;
1292
1293         *timings = vid_ch->dv_timings;
1294
1295         return 0;
1296 }
1297
1298 /*
1299  * vpif_log_status() - Status information
1300  * @file: file ptr
1301  * @priv: file handle
1302  *
1303  * Returns zero.
1304  */
1305 static int vpif_log_status(struct file *filep, void *priv)
1306 {
1307         /* status for sub devices */
1308         v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1309
1310         return 0;
1311 }
1312
1313 /* vpif capture ioctl operations */
1314 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1315         .vidioc_querycap                = vpif_querycap,
1316         .vidioc_enum_fmt_vid_cap        = vpif_enum_fmt_vid_cap,
1317         .vidioc_g_fmt_vid_cap           = vpif_g_fmt_vid_cap,
1318         .vidioc_s_fmt_vid_cap           = vpif_s_fmt_vid_cap,
1319         .vidioc_try_fmt_vid_cap         = vpif_try_fmt_vid_cap,
1320
1321         .vidioc_enum_input              = vpif_enum_input,
1322         .vidioc_s_input                 = vpif_s_input,
1323         .vidioc_g_input                 = vpif_g_input,
1324
1325         .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
1326         .vidioc_create_bufs             = vb2_ioctl_create_bufs,
1327         .vidioc_querybuf                = vb2_ioctl_querybuf,
1328         .vidioc_qbuf                    = vb2_ioctl_qbuf,
1329         .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
1330         .vidioc_expbuf                  = vb2_ioctl_expbuf,
1331         .vidioc_streamon                = vb2_ioctl_streamon,
1332         .vidioc_streamoff               = vb2_ioctl_streamoff,
1333
1334         .vidioc_querystd                = vpif_querystd,
1335         .vidioc_s_std                   = vpif_s_std,
1336         .vidioc_g_std                   = vpif_g_std,
1337
1338         .vidioc_enum_dv_timings         = vpif_enum_dv_timings,
1339         .vidioc_query_dv_timings        = vpif_query_dv_timings,
1340         .vidioc_s_dv_timings            = vpif_s_dv_timings,
1341         .vidioc_g_dv_timings            = vpif_g_dv_timings,
1342
1343         .vidioc_log_status              = vpif_log_status,
1344 };
1345
1346 /* vpif file operations */
1347 static struct v4l2_file_operations vpif_fops = {
1348         .owner = THIS_MODULE,
1349         .open = v4l2_fh_open,
1350         .release = vb2_fop_release,
1351         .unlocked_ioctl = video_ioctl2,
1352         .mmap = vb2_fop_mmap,
1353         .poll = vb2_fop_poll
1354 };
1355
1356 /**
1357  * initialize_vpif() - Initialize vpif data structures
1358  *
1359  * Allocate memory for data structures and initialize them
1360  */
1361 static int initialize_vpif(void)
1362 {
1363         int err, i, j;
1364         int free_channel_objects_index;
1365
1366         /* Allocate memory for six channel objects */
1367         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1368                 vpif_obj.dev[i] =
1369                     kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1370                 /* If memory allocation fails, return error */
1371                 if (!vpif_obj.dev[i]) {
1372                         free_channel_objects_index = i;
1373                         err = -ENOMEM;
1374                         goto vpif_init_free_channel_objects;
1375                 }
1376         }
1377         return 0;
1378
1379 vpif_init_free_channel_objects:
1380         for (j = 0; j < free_channel_objects_index; j++)
1381                 kfree(vpif_obj.dev[j]);
1382         return err;
1383 }
1384
1385 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1386                             struct v4l2_subdev *subdev,
1387                             struct v4l2_async_subdev *asd)
1388 {
1389         int i;
1390
1391         for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) {
1392                 struct v4l2_async_subdev *_asd = vpif_obj.config->asd[i];
1393                 const struct fwnode_handle *fwnode = _asd->match.fwnode.fwnode;
1394
1395                 if (fwnode == subdev->fwnode) {
1396                         vpif_obj.sd[i] = subdev;
1397                         vpif_obj.config->chan_config->inputs[i].subdev_name =
1398                                 (char *)to_of_node(subdev->fwnode)->full_name;
1399                         vpif_dbg(2, debug,
1400                                  "%s: setting input %d subdev_name = %s\n",
1401                                  __func__, i,
1402                                  to_of_node(subdev->fwnode)->full_name);
1403                         return 0;
1404                 }
1405         }
1406
1407         for (i = 0; i < vpif_obj.config->subdev_count; i++)
1408                 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1409                             subdev->name)) {
1410                         vpif_obj.sd[i] = subdev;
1411                         return 0;
1412                 }
1413
1414         return -EINVAL;
1415 }
1416
1417 static int vpif_probe_complete(void)
1418 {
1419         struct common_obj *common;
1420         struct video_device *vdev;
1421         struct channel_obj *ch;
1422         struct vb2_queue *q;
1423         int j, err, k;
1424
1425         for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1426                 ch = vpif_obj.dev[j];
1427                 ch->channel_id = j;
1428                 common = &(ch->common[VPIF_VIDEO_INDEX]);
1429                 spin_lock_init(&common->irqlock);
1430                 mutex_init(&common->lock);
1431
1432                 /* select input 0 */
1433                 err = vpif_set_input(vpif_obj.config, ch, 0);
1434                 if (err)
1435                         goto probe_out;
1436
1437                 /* set initial format */
1438                 ch->video.stdid = V4L2_STD_525_60;
1439                 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1440                 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1441                 vpif_update_std_info(ch);
1442
1443                 /* Initialize vb2 queue */
1444                 q = &common->buffer_queue;
1445                 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1446                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1447                 q->drv_priv = ch;
1448                 q->ops = &video_qops;
1449                 q->mem_ops = &vb2_dma_contig_memops;
1450                 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1451                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1452                 q->min_buffers_needed = 1;
1453                 q->lock = &common->lock;
1454                 q->dev = vpif_dev;
1455
1456                 err = vb2_queue_init(q);
1457                 if (err) {
1458                         vpif_err("vpif_capture: vb2_queue_init() failed\n");
1459                         goto probe_out;
1460                 }
1461
1462                 INIT_LIST_HEAD(&common->dma_queue);
1463
1464                 /* Initialize the video_device structure */
1465                 vdev = &ch->video_dev;
1466                 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1467                 vdev->release = video_device_release_empty;
1468                 vdev->fops = &vpif_fops;
1469                 vdev->ioctl_ops = &vpif_ioctl_ops;
1470                 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1471                 vdev->vfl_dir = VFL_DIR_RX;
1472                 vdev->queue = q;
1473                 vdev->lock = &common->lock;
1474                 video_set_drvdata(&ch->video_dev, ch);
1475                 err = video_register_device(vdev,
1476                                             VFL_TYPE_GRABBER, (j ? 1 : 0));
1477                 if (err)
1478                         goto probe_out;
1479         }
1480
1481         v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1482         return 0;
1483
1484 probe_out:
1485         for (k = 0; k < j; k++) {
1486                 /* Get the pointer to the channel object */
1487                 ch = vpif_obj.dev[k];
1488                 common = &ch->common[k];
1489                 /* Unregister video device */
1490                 video_unregister_device(&ch->video_dev);
1491         }
1492         kfree(vpif_obj.sd);
1493         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1494
1495         return err;
1496 }
1497
1498 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1499 {
1500         return vpif_probe_complete();
1501 }
1502
1503 static struct vpif_capture_config *
1504 vpif_capture_get_pdata(struct platform_device *pdev)
1505 {
1506         struct device_node *endpoint = NULL;
1507         struct v4l2_fwnode_endpoint bus_cfg;
1508         struct vpif_capture_config *pdata;
1509         struct vpif_subdev_info *sdinfo;
1510         struct vpif_capture_chan_config *chan;
1511         unsigned int i;
1512
1513         /*
1514          * DT boot: OF node from parent device contains
1515          * video ports & endpoints data.
1516          */
1517         if (pdev->dev.parent && pdev->dev.parent->of_node)
1518                 pdev->dev.of_node = pdev->dev.parent->of_node;
1519         if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
1520                 return pdev->dev.platform_data;
1521
1522         pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1523         if (!pdata)
1524                 return NULL;
1525         pdata->subdev_info =
1526                 devm_kzalloc(&pdev->dev, sizeof(*pdata->subdev_info) *
1527                              VPIF_CAPTURE_NUM_CHANNELS, GFP_KERNEL);
1528
1529         if (!pdata->subdev_info)
1530                 return NULL;
1531
1532         for (i = 0; i < VPIF_CAPTURE_NUM_CHANNELS; i++) {
1533                 struct device_node *rem;
1534                 unsigned int flags;
1535                 int err;
1536
1537                 endpoint = of_graph_get_next_endpoint(pdev->dev.of_node,
1538                                                       endpoint);
1539                 if (!endpoint)
1540                         break;
1541
1542                 sdinfo = &pdata->subdev_info[i];
1543                 chan = &pdata->chan_config[i];
1544                 chan->inputs = devm_kzalloc(&pdev->dev,
1545                                             sizeof(*chan->inputs) *
1546                                             VPIF_CAPTURE_NUM_CHANNELS,
1547                                             GFP_KERNEL);
1548
1549                 chan->input_count++;
1550                 chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA;
1551                 chan->inputs[i].input.std = V4L2_STD_ALL;
1552                 chan->inputs[i].input.capabilities = V4L2_IN_CAP_STD;
1553
1554                 err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
1555                                                  &bus_cfg);
1556                 if (err) {
1557                         dev_err(&pdev->dev, "Could not parse the endpoint\n");
1558                         goto done;
1559                 }
1560                 dev_dbg(&pdev->dev, "Endpoint %s, bus_width = %d\n",
1561                         endpoint->full_name, bus_cfg.bus.parallel.bus_width);
1562                 flags = bus_cfg.bus.parallel.flags;
1563
1564                 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
1565                         chan->vpif_if.hd_pol = 1;
1566
1567                 if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
1568                         chan->vpif_if.vd_pol = 1;
1569
1570                 rem = of_graph_get_remote_port_parent(endpoint);
1571                 if (!rem) {
1572                         dev_dbg(&pdev->dev, "Remote device at %s not found\n",
1573                                 endpoint->full_name);
1574                         goto done;
1575                 }
1576
1577                 dev_dbg(&pdev->dev, "Remote device %s, %s found\n",
1578                         rem->name, rem->full_name);
1579                 sdinfo->name = rem->full_name;
1580
1581                 pdata->asd[i] = devm_kzalloc(&pdev->dev,
1582                                              sizeof(struct v4l2_async_subdev),
1583                                              GFP_KERNEL);
1584                 if (!pdata->asd[i]) {
1585                         of_node_put(rem);
1586                         pdata = NULL;
1587                         goto done;
1588                 }
1589
1590                 pdata->asd[i]->match_type = V4L2_ASYNC_MATCH_FWNODE;
1591                 pdata->asd[i]->match.fwnode.fwnode = of_fwnode_handle(rem);
1592                 of_node_put(rem);
1593         }
1594
1595 done:
1596         pdata->asd_sizes[0] = i;
1597         pdata->subdev_count = i;
1598         pdata->card_name = "DA850/OMAP-L138 Video Capture";
1599
1600         return pdata;
1601 }
1602
1603 /**
1604  * vpif_probe : This function probes the vpif capture driver
1605  * @pdev: platform device pointer
1606  *
1607  * This creates device entries by register itself to the V4L2 driver and
1608  * initializes fields of each channel objects
1609  */
1610 static __init int vpif_probe(struct platform_device *pdev)
1611 {
1612         struct vpif_subdev_info *subdevdata;
1613         struct i2c_adapter *i2c_adap;
1614         struct resource *res;
1615         int subdev_count;
1616         int res_idx = 0;
1617         int i, err;
1618
1619         pdev->dev.platform_data = vpif_capture_get_pdata(pdev);
1620         if (!pdev->dev.platform_data) {
1621                 dev_warn(&pdev->dev, "Missing platform data.  Giving up.\n");
1622                 return -EINVAL;
1623         }
1624
1625         if (!pdev->dev.platform_data) {
1626                 dev_warn(&pdev->dev, "Missing platform data.  Giving up.\n");
1627                 return -EINVAL;
1628         }
1629
1630         vpif_dev = &pdev->dev;
1631
1632         err = initialize_vpif();
1633         if (err) {
1634                 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1635                 return err;
1636         }
1637
1638         err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1639         if (err) {
1640                 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1641                 return err;
1642         }
1643
1644         while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1645                 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1646                                         IRQF_SHARED, VPIF_DRIVER_NAME,
1647                                         (void *)(&vpif_obj.dev[res_idx]->
1648                                         channel_id));
1649                 if (err) {
1650                         err = -EINVAL;
1651                         goto vpif_unregister;
1652                 }
1653                 res_idx++;
1654         }
1655
1656         vpif_obj.config = pdev->dev.platform_data;
1657
1658         subdev_count = vpif_obj.config->subdev_count;
1659         vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL);
1660         if (!vpif_obj.sd) {
1661                 err = -ENOMEM;
1662                 goto vpif_unregister;
1663         }
1664
1665         if (!vpif_obj.config->asd_sizes[0]) {
1666                 int i2c_id = vpif_obj.config->i2c_adapter_id;
1667
1668                 i2c_adap = i2c_get_adapter(i2c_id);
1669                 WARN_ON(!i2c_adap);
1670                 for (i = 0; i < subdev_count; i++) {
1671                         subdevdata = &vpif_obj.config->subdev_info[i];
1672                         vpif_obj.sd[i] =
1673                                 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1674                                                           i2c_adap,
1675                                                           &subdevdata->
1676                                                           board_info,
1677                                                           NULL);
1678
1679                         if (!vpif_obj.sd[i]) {
1680                                 vpif_err("Error registering v4l2 subdevice\n");
1681                                 err = -ENODEV;
1682                                 goto probe_subdev_out;
1683                         }
1684                         v4l2_info(&vpif_obj.v4l2_dev,
1685                                   "registered sub device %s\n",
1686                                    subdevdata->name);
1687                 }
1688                 vpif_probe_complete();
1689         } else {
1690                 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1691                 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1692                 vpif_obj.notifier.bound = vpif_async_bound;
1693                 vpif_obj.notifier.complete = vpif_async_complete;
1694                 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1695                                                    &vpif_obj.notifier);
1696                 if (err) {
1697                         vpif_err("Error registering async notifier\n");
1698                         err = -EINVAL;
1699                         goto probe_subdev_out;
1700                 }
1701         }
1702
1703         return 0;
1704
1705 probe_subdev_out:
1706         /* free sub devices memory */
1707         kfree(vpif_obj.sd);
1708 vpif_unregister:
1709         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1710
1711         return err;
1712 }
1713
1714 /**
1715  * vpif_remove() - driver remove handler
1716  * @device: ptr to platform device structure
1717  *
1718  * The vidoe device is unregistered
1719  */
1720 static int vpif_remove(struct platform_device *device)
1721 {
1722         struct channel_obj *ch;
1723         int i;
1724
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         return 0;
1737 }
1738
1739 #ifdef CONFIG_PM_SLEEP
1740 /**
1741  * vpif_suspend: vpif device suspend
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 = vpif_remove,
1819 };
1820
1821 module_platform_driver(vpif_driver);