drivers/media/platform/davinci/vpif_capture.c

   1 /*
   2  * Copyright (C) 2009 Texas Instruments Inc
   3  * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  *
  19  * TODO : add support for VBI & HBI data service
  20  *        add static buffer allocation
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/slab.h>
  27
  28 #include <media/v4l2-ioctl.h>
  29
  30 #include "vpif.h"
  31 #include "vpif_capture.h"
  32
  33 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
  34 MODULE_LICENSE("GPL");
  35 MODULE_VERSION(VPIF_CAPTURE_VERSION);
  36
  37 #define vpif_err(fmt, arg...)   v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
  38 #define vpif_dbg(level, debug, fmt, arg...)     \
  39                 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
  40
  41 static int debug = 1;
  42
  43 module_param(debug, int, 0644);
  44
  45 MODULE_PARM_DESC(debug, "Debug level 0-1");
  46
  47 #define VPIF_DRIVER_NAME        "vpif_capture"
  48
  49 /* global variables */
  50 static struct vpif_device vpif_obj = { {NULL} };
  51 static struct device *vpif_dev;
  52 static void vpif_calculate_offsets(struct channel_obj *ch);
  53 static void vpif_config_addr(struct channel_obj *ch, int muxmode);
  54
  55 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
  56
  57 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
  58 static int ycmux_mode;
  59
  60 static inline
  61 struct vpif_cap_buffer *to_vpif_buffer(struct vb2_v4l2_buffer *vb)
  62 {
  63         return container_of(vb, struct vpif_cap_buffer, vb);
  64 }
  65
  66 /**
  67  * vpif_buffer_prepare :  callback function for buffer prepare
  68  * @vb: ptr to vb2_buffer
  69  *
  70  * This is the callback function for buffer prepare when vb2_qbuf()
  71  * function is called. The buffer is prepared and user space virtual address
  72  * or user address is converted into  physical address
  73  */
  74 static int vpif_buffer_prepare(struct vb2_buffer *vb)
  75 {
  76         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
  77         struct vb2_queue *q = vb->vb2_queue;
  78         struct channel_obj *ch = vb2_get_drv_priv(q);
  79         struct common_obj *common;
  80         unsigned long addr;
  81
  82         vpif_dbg(2, debug, "vpif_buffer_prepare\n");
  83
  84         common = &ch->common[VPIF_VIDEO_INDEX];
  85
  86         vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
  87         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
  88                 return -EINVAL;
  89
  90         vbuf->field = common->fmt.fmt.pix.field;
  91
  92         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
  93         if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
  94                 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
  95                 !IS_ALIGNED((addr + common->ctop_off), 8) ||
  96                 !IS_ALIGNED((addr + common->cbtm_off), 8)) {
  97                 vpif_dbg(1, debug, "offset is not aligned\n");
  98                 return -EINVAL;
  99         }
 100
 101         return 0;
 102 }
 103
 104 /**
 105  * vpif_buffer_queue_setup : Callback function for buffer setup.
 106  * @vq: vb2_queue ptr
 107  * @nbuffers: ptr to number of buffers requested by application
 108  * @nplanes:: contains number of distinct video planes needed to hold a frame
 109  * @sizes[]: contains the size (in bytes) of each plane.
 110  * @alloc_devs: ptr to allocation context
 111  *
 112  * This callback function is called when reqbuf() is called to adjust
 113  * the buffer count and buffer size
 114  */
 115 static int vpif_buffer_queue_setup(struct vb2_queue *vq,
 116                                 unsigned int *nbuffers, unsigned int *nplanes,
 117                                 unsigned int sizes[], struct device *alloc_devs[])
 118 {
 119         struct channel_obj *ch = vb2_get_drv_priv(vq);
 120         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 121         unsigned size = common->fmt.fmt.pix.sizeimage;
 122
 123         vpif_dbg(2, debug, "vpif_buffer_setup\n");
 124
 125         if (*nplanes) {
 126                 if (sizes[0] < size)
 127                         return -EINVAL;
 128                 size = sizes[0];
 129         }
 130
 131         if (vq->num_buffers + *nbuffers < 3)
 132                 *nbuffers = 3 - vq->num_buffers;
 133
 134         *nplanes = 1;
 135         sizes[0] = size;
 136
 137         /* Calculate the offset for Y and C data in the buffer */
 138         vpif_calculate_offsets(ch);
 139
 140         return 0;
 141 }
 142
 143 /**
 144  * vpif_buffer_queue : Callback function to add buffer to DMA queue
 145  * @vb: ptr to vb2_buffer
 146  */
 147 static void vpif_buffer_queue(struct vb2_buffer *vb)
 148 {
 149         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 150         struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
 151         struct vpif_cap_buffer *buf = to_vpif_buffer(vbuf);
 152         struct common_obj *common;
 153         unsigned long flags;
 154
 155         common = &ch->common[VPIF_VIDEO_INDEX];
 156
 157         vpif_dbg(2, debug, "vpif_buffer_queue\n");
 158
 159         spin_lock_irqsave(&common->irqlock, flags);
 160         /* add the buffer to the DMA queue */
 161         list_add_tail(&buf->list, &common->dma_queue);
 162         spin_unlock_irqrestore(&common->irqlock, flags);
 163 }
 164
 165 /**
 166  * vpif_start_streaming : Starts the DMA engine for streaming
 167  * @vb: ptr to vb2_buffer
 168  * @count: number of buffers
 169  */
 170 static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
 171 {
 172         struct vpif_capture_config *vpif_config_data =
 173                                         vpif_dev->platform_data;
 174         struct channel_obj *ch = vb2_get_drv_priv(vq);
 175         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 176         struct vpif_params *vpif = &ch->vpifparams;
 177         struct vpif_cap_buffer *buf, *tmp;
 178         unsigned long addr, flags;
 179         int ret;
 180
 181         spin_lock_irqsave(&common->irqlock, flags);
 182
 183         /* Initialize field_id */
 184         ch->field_id = 0;
 185
 186         /* configure 1 or 2 channel mode */
 187         if (vpif_config_data->setup_input_channel_mode) {
 188                 ret = vpif_config_data->
 189                         setup_input_channel_mode(vpif->std_info.ycmux_mode);
 190                 if (ret < 0) {
 191                         vpif_dbg(1, debug, "can't set vpif channel mode\n");
 192                         goto err;
 193                 }
 194         }
 195
 196         ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
 197         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 198                 vpif_dbg(1, debug, "stream on failed in subdev\n");
 199                 goto err;
 200         }
 201
 202         /* Call vpif_set_params function to set the parameters and addresses */
 203         ret = vpif_set_video_params(vpif, ch->channel_id);
 204         if (ret < 0) {
 205                 vpif_dbg(1, debug, "can't set video params\n");
 206                 goto err;
 207         }
 208
 209         ycmux_mode = ret;
 210         vpif_config_addr(ch, ret);
 211
 212         /* Get the next frame from the buffer queue */
 213         common->cur_frm = common->next_frm = list_entry(common->dma_queue.next,
 214                                     struct vpif_cap_buffer, list);
 215         /* Remove buffer from the buffer queue */
 216         list_del(&common->cur_frm->list);
 217         spin_unlock_irqrestore(&common->irqlock, flags);
 218
 219         addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 0);
 220
 221         common->set_addr(addr + common->ytop_off,
 222                          addr + common->ybtm_off,
 223                          addr + common->ctop_off,
 224                          addr + common->cbtm_off);
 225
 226         /**
 227          * Set interrupt for both the fields in VPIF Register enable channel in
 228          * VPIF register
 229          */
 230         channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
 231         if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
 232                 channel0_intr_assert();
 233                 channel0_intr_enable(1);
 234                 enable_channel0(1);
 235         }
 236         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
 237                 ycmux_mode == 2) {
 238                 channel1_intr_assert();
 239                 channel1_intr_enable(1);
 240                 enable_channel1(1);
 241         }
 242
 243         return 0;
 244
 245 err:
 246         list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
 247                 list_del(&buf->list);
 248                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
 249         }
 250         spin_unlock_irqrestore(&common->irqlock, flags);
 251
 252         return ret;
 253 }
 254
 255 /**
 256  * vpif_stop_streaming : Stop the DMA engine
 257  * @vq: ptr to vb2_queue
 258  *
 259  * This callback stops the DMA engine and any remaining buffers
 260  * in the DMA queue are released.
 261  */
 262 static void vpif_stop_streaming(struct vb2_queue *vq)
 263 {
 264         struct channel_obj *ch = vb2_get_drv_priv(vq);
 265         struct common_obj *common;
 266         unsigned long flags;
 267         int ret;
 268
 269         common = &ch->common[VPIF_VIDEO_INDEX];
 270
 271         /* Disable channel as per its device type and channel id */
 272         if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
 273                 enable_channel0(0);
 274                 channel0_intr_enable(0);
 275         }
 276         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
 277                 ycmux_mode == 2) {
 278                 enable_channel1(0);
 279                 channel1_intr_enable(0);
 280         }
 281
 282         ycmux_mode = 0;
 283
 284         ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
 285         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
 286                 vpif_dbg(1, debug, "stream off failed in subdev\n");
 287
 288         /* release all active buffers */
 289         spin_lock_irqsave(&common->irqlock, flags);
 290         if (common->cur_frm == common->next_frm) {
 291                 vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
 292                                 VB2_BUF_STATE_ERROR);
 293         } else {
 294                 if (common->cur_frm != NULL)
 295                         vb2_buffer_done(&common->cur_frm->vb.vb2_buf,
 296                                         VB2_BUF_STATE_ERROR);
 297                 if (common->next_frm != NULL)
 298                         vb2_buffer_done(&common->next_frm->vb.vb2_buf,
 299                                         VB2_BUF_STATE_ERROR);
 300         }
 301
 302         while (!list_empty(&common->dma_queue)) {
 303                 common->next_frm = list_entry(common->dma_queue.next,
 304                                                 struct vpif_cap_buffer, list);
 305                 list_del(&common->next_frm->list);
 306                 vb2_buffer_done(&common->next_frm->vb.vb2_buf,
 307                                 VB2_BUF_STATE_ERROR);
 308         }
 309         spin_unlock_irqrestore(&common->irqlock, flags);
 310 }
 311
 312 static struct vb2_ops video_qops = {
 313         .queue_setup            = vpif_buffer_queue_setup,
 314         .buf_prepare            = vpif_buffer_prepare,
 315         .start_streaming        = vpif_start_streaming,
 316         .stop_streaming         = vpif_stop_streaming,
 317         .buf_queue              = vpif_buffer_queue,
 318         .wait_prepare           = vb2_ops_wait_prepare,
 319         .wait_finish            = vb2_ops_wait_finish,
 320 };
 321
 322 /**
 323  * vpif_process_buffer_complete: process a completed buffer
 324  * @common: ptr to common channel object
 325  *
 326  * This function time stamp the buffer and mark it as DONE. It also
 327  * wake up any process waiting on the QUEUE and set the next buffer
 328  * as current
 329  */
 330 static void vpif_process_buffer_complete(struct common_obj *common)
 331 {
 332         common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
 333         vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
 334         /* Make curFrm pointing to nextFrm */
 335         common->cur_frm = common->next_frm;
 336 }
 337
 338 /**
 339  * vpif_schedule_next_buffer: set next buffer address for capture
 340  * @common : ptr to common channel object
 341  *
 342  * This function will get next buffer from the dma queue and
 343  * set the buffer address in the vpif register for capture.
 344  * the buffer is marked active
 345  */
 346 static void vpif_schedule_next_buffer(struct common_obj *common)
 347 {
 348         unsigned long addr = 0;
 349
 350         spin_lock(&common->irqlock);
 351         common->next_frm = list_entry(common->dma_queue.next,
 352                                      struct vpif_cap_buffer, list);
 353         /* Remove that buffer from the buffer queue */
 354         list_del(&common->next_frm->list);
 355         spin_unlock(&common->irqlock);
 356         addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 0);
 357
 358         /* Set top and bottom field addresses in VPIF registers */
 359         common->set_addr(addr + common->ytop_off,
 360                          addr + common->ybtm_off,
 361                          addr + common->ctop_off,
 362                          addr + common->cbtm_off);
 363 }
 364
 365 /**
 366  * vpif_channel_isr : ISR handler for vpif capture
 367  * @irq: irq number
 368  * @dev_id: dev_id ptr
 369  *
 370  * It changes status of the captured buffer, takes next buffer from the queue
 371  * and sets its address in VPIF registers
 372  */
 373 static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
 374 {
 375         struct vpif_device *dev = &vpif_obj;
 376         struct common_obj *common;
 377         struct channel_obj *ch;
 378         int channel_id = 0;
 379         int fid = -1, i;
 380
 381         channel_id = *(int *)(dev_id);
 382         if (!vpif_intr_status(channel_id))
 383                 return IRQ_NONE;
 384
 385         ch = dev->dev[channel_id];
 386
 387         for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
 388                 common = &ch->common[i];
 389                 /* skip If streaming is not started in this channel */
 390                 /* Check the field format */
 391                 if (1 == ch->vpifparams.std_info.frm_fmt) {
 392                         /* Progressive mode */
 393                         spin_lock(&common->irqlock);
 394                         if (list_empty(&common->dma_queue)) {
 395                                 spin_unlock(&common->irqlock);
 396                                 continue;
 397                         }
 398                         spin_unlock(&common->irqlock);
 399
 400                         if (!channel_first_int[i][channel_id])
 401                                 vpif_process_buffer_complete(common);
 402
 403                         channel_first_int[i][channel_id] = 0;
 404
 405                         vpif_schedule_next_buffer(common);
 406
 407
 408                         channel_first_int[i][channel_id] = 0;
 409                 } else {
 410                         /**
 411                          * Interlaced mode. If it is first interrupt, ignore
 412                          * it
 413                          */
 414                         if (channel_first_int[i][channel_id]) {
 415                                 channel_first_int[i][channel_id] = 0;
 416                                 continue;
 417                         }
 418                         if (0 == i) {
 419                                 ch->field_id ^= 1;
 420                                 /* Get field id from VPIF registers */
 421                                 fid = vpif_channel_getfid(ch->channel_id);
 422                                 if (fid != ch->field_id) {
 423                                         /**
 424                                          * If field id does not match stored
 425                                          * field id, make them in sync
 426                                          */
 427                                         if (0 == fid)
 428                                                 ch->field_id = fid;
 429                                         return IRQ_HANDLED;
 430                                 }
 431                         }
 432                         /* device field id and local field id are in sync */
 433                         if (0 == fid) {
 434                                 /* this is even field */
 435                                 if (common->cur_frm == common->next_frm)
 436                                         continue;
 437
 438                                 /* mark the current buffer as done */
 439                                 vpif_process_buffer_complete(common);
 440                         } else if (1 == fid) {
 441                                 /* odd field */
 442                                 spin_lock(&common->irqlock);
 443                                 if (list_empty(&common->dma_queue) ||
 444                                     (common->cur_frm != common->next_frm)) {
 445                                         spin_unlock(&common->irqlock);
 446                                         continue;
 447                                 }
 448                                 spin_unlock(&common->irqlock);
 449
 450                                 vpif_schedule_next_buffer(common);
 451                         }
 452                 }
 453         }
 454         return IRQ_HANDLED;
 455 }
 456
 457 /**
 458  * vpif_update_std_info() - update standard related info
 459  * @ch: ptr to channel object
 460  *
 461  * For a given standard selected by application, update values
 462  * in the device data structures
 463  */
 464 static int vpif_update_std_info(struct channel_obj *ch)
 465 {
 466         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 467         struct vpif_params *vpifparams = &ch->vpifparams;
 468         const struct vpif_channel_config_params *config;
 469         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
 470         struct video_obj *vid_ch = &ch->video;
 471         int index;
 472
 473         vpif_dbg(2, debug, "vpif_update_std_info\n");
 474
 475         for (index = 0; index < vpif_ch_params_count; index++) {
 476                 config = &vpif_ch_params[index];
 477                 if (config->hd_sd == 0) {
 478                         vpif_dbg(2, debug, "SD format\n");
 479                         if (config->stdid & vid_ch->stdid) {
 480                                 memcpy(std_info, config, sizeof(*config));
 481                                 break;
 482                         }
 483                 } else {
 484                         vpif_dbg(2, debug, "HD format\n");
 485                         if (!memcmp(&config->dv_timings, &vid_ch->dv_timings,
 486                                 sizeof(vid_ch->dv_timings))) {
 487                                 memcpy(std_info, config, sizeof(*config));
 488                                 break;
 489                         }
 490                 }
 491         }
 492
 493         /* standard not found */
 494         if (index == vpif_ch_params_count)
 495                 return -EINVAL;
 496
 497         common->fmt.fmt.pix.width = std_info->width;
 498         common->width = std_info->width;
 499         common->fmt.fmt.pix.height = std_info->height;
 500         common->height = std_info->height;
 501         common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
 502         common->fmt.fmt.pix.bytesperline = std_info->width;
 503         vpifparams->video_params.hpitch = std_info->width;
 504         vpifparams->video_params.storage_mode = std_info->frm_fmt;
 505
 506         if (vid_ch->stdid)
 507                 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 508         else
 509                 common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
 510
 511         if (ch->vpifparams.std_info.frm_fmt)
 512                 common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
 513         else
 514                 common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
 515
 516         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
 517                 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
 518         else
 519                 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
 520
 521         common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 522
 523         return 0;
 524 }
 525
 526 /**
 527  * vpif_calculate_offsets : This function calculates buffers offsets
 528  * @ch : ptr to channel object
 529  *
 530  * This function calculates buffer offsets for Y and C in the top and
 531  * bottom field
 532  */
 533 static void vpif_calculate_offsets(struct channel_obj *ch)
 534 {
 535         unsigned int hpitch, sizeimage;
 536         struct video_obj *vid_ch = &(ch->video);
 537         struct vpif_params *vpifparams = &ch->vpifparams;
 538         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 539         enum v4l2_field field = common->fmt.fmt.pix.field;
 540
 541         vpif_dbg(2, debug, "vpif_calculate_offsets\n");
 542
 543         if (V4L2_FIELD_ANY == field) {
 544                 if (vpifparams->std_info.frm_fmt)
 545                         vid_ch->buf_field = V4L2_FIELD_NONE;
 546                 else
 547                         vid_ch->buf_field = V4L2_FIELD_INTERLACED;
 548         } else
 549                 vid_ch->buf_field = common->fmt.fmt.pix.field;
 550
 551         sizeimage = common->fmt.fmt.pix.sizeimage;
 552
 553         hpitch = common->fmt.fmt.pix.bytesperline;
 554
 555         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 556             (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
 557                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 558                 common->ytop_off = 0;
 559                 common->ybtm_off = hpitch;
 560                 common->ctop_off = sizeimage / 2;
 561                 common->cbtm_off = sizeimage / 2 + hpitch;
 562         } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
 563                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 564                 common->ytop_off = 0;
 565                 common->ybtm_off = sizeimage / 4;
 566                 common->ctop_off = sizeimage / 2;
 567                 common->cbtm_off = common->ctop_off + sizeimage / 4;
 568         } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
 569                 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
 570                 common->ybtm_off = 0;
 571                 common->ytop_off = sizeimage / 4;
 572                 common->cbtm_off = sizeimage / 2;
 573                 common->ctop_off = common->cbtm_off + sizeimage / 4;
 574         }
 575         if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
 576             (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
 577                 vpifparams->video_params.storage_mode = 1;
 578         else
 579                 vpifparams->video_params.storage_mode = 0;
 580
 581         if (1 == vpifparams->std_info.frm_fmt)
 582                 vpifparams->video_params.hpitch =
 583                     common->fmt.fmt.pix.bytesperline;
 584         else {
 585                 if ((field == V4L2_FIELD_ANY)
 586                     || (field == V4L2_FIELD_INTERLACED))
 587                         vpifparams->video_params.hpitch =
 588                             common->fmt.fmt.pix.bytesperline * 2;
 589                 else
 590                         vpifparams->video_params.hpitch =
 591                             common->fmt.fmt.pix.bytesperline;
 592         }
 593
 594         ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
 595 }
 596
 597 /**
 598  * vpif_get_default_field() - Get default field type based on interface
 599  * @vpif_params - ptr to vpif params
 600  */
 601 static inline enum v4l2_field vpif_get_default_field(
 602                                 struct vpif_interface *iface)
 603 {
 604         return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
 605                                                 V4L2_FIELD_INTERLACED;
 606 }
 607
 608 /**
 609  * vpif_config_addr() - function to configure buffer address in vpif
 610  * @ch - channel ptr
 611  * @muxmode - channel mux mode
 612  */
 613 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
 614 {
 615         struct common_obj *common;
 616
 617         vpif_dbg(2, debug, "vpif_config_addr\n");
 618
 619         common = &(ch->common[VPIF_VIDEO_INDEX]);
 620
 621         if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
 622                 common->set_addr = ch1_set_videobuf_addr;
 623         else if (2 == muxmode)
 624                 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
 625         else
 626                 common->set_addr = ch0_set_videobuf_addr;
 627 }
 628
 629 /**
 630  * vpif_input_to_subdev() - Maps input to sub device
 631  * @vpif_cfg - global config ptr
 632  * @chan_cfg - channel config ptr
 633  * @input_index - Given input index from application
 634  *
 635  * lookup the sub device information for a given input index.
 636  * we report all the inputs to application. inputs table also
 637  * has sub device name for the each input
 638  */
 639 static int vpif_input_to_subdev(
 640                 struct vpif_capture_config *vpif_cfg,
 641                 struct vpif_capture_chan_config *chan_cfg,
 642                 int input_index)
 643 {
 644         struct vpif_subdev_info *subdev_info;
 645         const char *subdev_name;
 646         int i;
 647
 648         vpif_dbg(2, debug, "vpif_input_to_subdev\n");
 649
 650         subdev_name = chan_cfg->inputs[input_index].subdev_name;
 651         if (subdev_name == NULL)
 652                 return -1;
 653
 654         /* loop through the sub device list to get the sub device info */
 655         for (i = 0; i < vpif_cfg->subdev_count; i++) {
 656                 subdev_info = &vpif_cfg->subdev_info[i];
 657                 if (!strcmp(subdev_info->name, subdev_name))
 658                         return i;
 659         }
 660         return -1;
 661 }
 662
 663 /**
 664  * vpif_set_input() - Select an input
 665  * @vpif_cfg - global config ptr
 666  * @ch - channel
 667  * @_index - Given input index from application
 668  *
 669  * Select the given input.
 670  */
 671 static int vpif_set_input(
 672                 struct vpif_capture_config *vpif_cfg,
 673                 struct channel_obj *ch,
 674                 int index)
 675 {
 676         struct vpif_capture_chan_config *chan_cfg =
 677                         &vpif_cfg->chan_config[ch->channel_id];
 678         struct vpif_subdev_info *subdev_info = NULL;
 679         struct v4l2_subdev *sd = NULL;
 680         u32 input = 0, output = 0;
 681         int sd_index;
 682         int ret;
 683
 684         sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
 685         if (sd_index >= 0) {
 686                 sd = vpif_obj.sd[sd_index];
 687                 subdev_info = &vpif_cfg->subdev_info[sd_index];
 688         }
 689
 690         /* first setup input path from sub device to vpif */
 691         if (sd && vpif_cfg->setup_input_path) {
 692                 ret = vpif_cfg->setup_input_path(ch->channel_id,
 693                                        subdev_info->name);
 694                 if (ret < 0) {
 695                         vpif_dbg(1, debug, "couldn't setup input path for the" \
 696                         " sub device %s, for input index %d\n",
 697                         subdev_info->name, index);
 698                         return ret;
 699                 }
 700         }
 701
 702         if (sd) {
 703                 input = chan_cfg->inputs[index].input_route;
 704                 output = chan_cfg->inputs[index].output_route;
 705                 ret = v4l2_subdev_call(sd, video, s_routing,
 706                                 input, output, 0);
 707                 if (ret < 0 && ret != -ENOIOCTLCMD) {
 708                         vpif_dbg(1, debug, "Failed to set input\n");
 709                         return ret;
 710                 }
 711         }
 712         ch->input_idx = index;
 713         ch->sd = sd;
 714         /* copy interface parameters to vpif */
 715         ch->vpifparams.iface = chan_cfg->vpif_if;
 716
 717         /* update tvnorms from the sub device input info */
 718         ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
 719         return 0;
 720 }
 721
 722 /**
 723  * vpif_querystd() - querystd handler
 724  * @file: file ptr
 725  * @priv: file handle
 726  * @std_id: ptr to std id
 727  *
 728  * This function is called to detect standard at the selected input
 729  */
 730 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
 731 {
 732         struct video_device *vdev = video_devdata(file);
 733         struct channel_obj *ch = video_get_drvdata(vdev);
 734         int ret = 0;
 735
 736         vpif_dbg(2, debug, "vpif_querystd\n");
 737
 738         /* Call querystd function of decoder device */
 739         ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
 740
 741         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
 742                 return -ENODATA;
 743         if (ret) {
 744                 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
 745                 return ret;
 746         }
 747
 748         return 0;
 749 }
 750
 751 /**
 752  * vpif_g_std() - get STD handler
 753  * @file: file ptr
 754  * @priv: file handle
 755  * @std_id: ptr to std id
 756  */
 757 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
 758 {
 759         struct vpif_capture_config *config = vpif_dev->platform_data;
 760         struct video_device *vdev = video_devdata(file);
 761         struct channel_obj *ch = video_get_drvdata(vdev);
 762         struct vpif_capture_chan_config *chan_cfg;
 763         struct v4l2_input input;
 764
 765         vpif_dbg(2, debug, "vpif_g_std\n");
 766
 767         if (config->chan_config[ch->channel_id].inputs == NULL)
 768                 return -ENODATA;
 769
 770         chan_cfg = &config->chan_config[ch->channel_id];
 771         input = chan_cfg->inputs[ch->input_idx].input;
 772         if (input.capabilities != V4L2_IN_CAP_STD)
 773                 return -ENODATA;
 774
 775         *std = ch->video.stdid;
 776         return 0;
 777 }
 778
 779 /**
 780  * vpif_s_std() - set STD handler
 781  * @file: file ptr
 782  * @priv: file handle
 783  * @std_id: ptr to std id
 784  */
 785 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
 786 {
 787         struct vpif_capture_config *config = vpif_dev->platform_data;
 788         struct video_device *vdev = video_devdata(file);
 789         struct channel_obj *ch = video_get_drvdata(vdev);
 790         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 791         struct vpif_capture_chan_config *chan_cfg;
 792         struct v4l2_input input;
 793         int ret;
 794
 795         vpif_dbg(2, debug, "vpif_s_std\n");
 796
 797         if (config->chan_config[ch->channel_id].inputs == NULL)
 798                 return -ENODATA;
 799
 800         chan_cfg = &config->chan_config[ch->channel_id];
 801         input = chan_cfg->inputs[ch->input_idx].input;
 802         if (input.capabilities != V4L2_IN_CAP_STD)
 803                 return -ENODATA;
 804
 805         if (vb2_is_busy(&common->buffer_queue))
 806                 return -EBUSY;
 807
 808         /* Call encoder subdevice function to set the standard */
 809         ch->video.stdid = std_id;
 810         memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
 811
 812         /* Get the information about the standard */
 813         if (vpif_update_std_info(ch)) {
 814                 vpif_err("Error getting the standard info\n");
 815                 return -EINVAL;
 816         }
 817
 818         /* set standard in the sub device */
 819         ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
 820         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 821                 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
 822                 return ret;
 823         }
 824         return 0;
 825 }
 826
 827 /**
 828  * vpif_enum_input() - ENUMINPUT handler
 829  * @file: file ptr
 830  * @priv: file handle
 831  * @input: ptr to input structure
 832  */
 833 static int vpif_enum_input(struct file *file, void *priv,
 834                                 struct v4l2_input *input)
 835 {
 836
 837         struct vpif_capture_config *config = vpif_dev->platform_data;
 838         struct video_device *vdev = video_devdata(file);
 839         struct channel_obj *ch = video_get_drvdata(vdev);
 840         struct vpif_capture_chan_config *chan_cfg;
 841
 842         chan_cfg = &config->chan_config[ch->channel_id];
 843
 844         if (input->index >= chan_cfg->input_count)
 845                 return -EINVAL;
 846
 847         memcpy(input, &chan_cfg->inputs[input->index].input,
 848                 sizeof(*input));
 849         return 0;
 850 }
 851
 852 /**
 853  * vpif_g_input() - Get INPUT handler
 854  * @file: file ptr
 855  * @priv: file handle
 856  * @index: ptr to input index
 857  */
 858 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
 859 {
 860         struct video_device *vdev = video_devdata(file);
 861         struct channel_obj *ch = video_get_drvdata(vdev);
 862
 863         *index = ch->input_idx;
 864         return 0;
 865 }
 866
 867 /**
 868  * vpif_s_input() - Set INPUT handler
 869  * @file: file ptr
 870  * @priv: file handle
 871  * @index: input index
 872  */
 873 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
 874 {
 875         struct vpif_capture_config *config = vpif_dev->platform_data;
 876         struct video_device *vdev = video_devdata(file);
 877         struct channel_obj *ch = video_get_drvdata(vdev);
 878         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 879         struct vpif_capture_chan_config *chan_cfg;
 880
 881         chan_cfg = &config->chan_config[ch->channel_id];
 882
 883         if (index >= chan_cfg->input_count)
 884                 return -EINVAL;
 885
 886         if (vb2_is_busy(&common->buffer_queue))
 887                 return -EBUSY;
 888
 889         return vpif_set_input(config, ch, index);
 890 }
 891
 892 /**
 893  * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
 894  * @file: file ptr
 895  * @priv: file handle
 896  * @index: input index
 897  */
 898 static int vpif_enum_fmt_vid_cap(struct file *file, void  *priv,
 899                                         struct v4l2_fmtdesc *fmt)
 900 {
 901         struct video_device *vdev = video_devdata(file);
 902         struct channel_obj *ch = video_get_drvdata(vdev);
 903
 904         if (fmt->index != 0) {
 905                 vpif_dbg(1, debug, "Invalid format index\n");
 906                 return -EINVAL;
 907         }
 908
 909         /* Fill in the information about format */
 910         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
 911                 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 912                 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
 913                 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
 914         } else {
 915                 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 916                 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
 917                 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
 918         }
 919         return 0;
 920 }
 921
 922 /**
 923  * vpif_try_fmt_vid_cap() - TRY_FMT handler
 924  * @file: file ptr
 925  * @priv: file handle
 926  * @fmt: ptr to v4l2 format structure
 927  */
 928 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
 929                                 struct v4l2_format *fmt)
 930 {
 931         struct video_device *vdev = video_devdata(file);
 932         struct channel_obj *ch = video_get_drvdata(vdev);
 933         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 934         struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
 935         struct vpif_params *vpif_params = &ch->vpifparams;
 936
 937         /*
 938          * to supress v4l-compliance warnings silently correct
 939          * the pixelformat
 940          */
 941         if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
 942                 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8)
 943                         pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
 944         } else {
 945                 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
 946                         pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
 947         }
 948
 949         common->fmt.fmt.pix.pixelformat = pixfmt->pixelformat;
 950
 951         vpif_update_std_info(ch);
 952
 953         pixfmt->field = common->fmt.fmt.pix.field;
 954         pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
 955         pixfmt->bytesperline = common->fmt.fmt.pix.width;
 956         pixfmt->width = common->fmt.fmt.pix.width;
 957         pixfmt->height = common->fmt.fmt.pix.height;
 958         pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
 959         pixfmt->priv = 0;
 960
 961         return 0;
 962 }
 963
 964
 965 /**
 966  * vpif_g_fmt_vid_cap() - Set INPUT handler
 967  * @file: file ptr
 968  * @priv: file handle
 969  * @fmt: ptr to v4l2 format structure
 970  */
 971 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
 972                                 struct v4l2_format *fmt)
 973 {
 974         struct video_device *vdev = video_devdata(file);
 975         struct channel_obj *ch = video_get_drvdata(vdev);
 976         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 977
 978         /* Check the validity of the buffer type */
 979         if (common->fmt.type != fmt->type)
 980                 return -EINVAL;
 981
 982         /* Fill in the information about format */
 983         *fmt = common->fmt;
 984         return 0;
 985 }
 986
 987 /**
 988  * vpif_s_fmt_vid_cap() - Set FMT handler
 989  * @file: file ptr
 990  * @priv: file handle
 991  * @fmt: ptr to v4l2 format structure
 992  */
 993 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
 994                                 struct v4l2_format *fmt)
 995 {
 996         struct video_device *vdev = video_devdata(file);
 997         struct channel_obj *ch = video_get_drvdata(vdev);
 998         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 999         int ret;
1000
1001         vpif_dbg(2, debug, "%s\n", __func__);
1002
1003         if (vb2_is_busy(&common->buffer_queue))
1004                 return -EBUSY;
1005
1006         ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1007         if (ret)
1008                 return ret;
1009
1010         /* store the format in the channel object */
1011         common->fmt = *fmt;
1012         return 0;
1013 }
1014
1015 /**
1016  * vpif_querycap() - QUERYCAP handler
1017  * @file: file ptr
1018  * @priv: file handle
1019  * @cap: ptr to v4l2_capability structure
1020  */
1021 static int vpif_querycap(struct file *file, void  *priv,
1022                                 struct v4l2_capability *cap)
1023 {
1024         struct vpif_capture_config *config = vpif_dev->platform_data;
1025
1026         cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1027         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1028         strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1029         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1030                  dev_name(vpif_dev));
1031         strlcpy(cap->card, config->card_name, sizeof(cap->card));
1032
1033         return 0;
1034 }
1035
1036 /**
1037  * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1038  * @file: file ptr
1039  * @priv: file handle
1040  * @timings: input timings
1041  */
1042 static int
1043 vpif_enum_dv_timings(struct file *file, void *priv,
1044                      struct v4l2_enum_dv_timings *timings)
1045 {
1046         struct vpif_capture_config *config = vpif_dev->platform_data;
1047         struct video_device *vdev = video_devdata(file);
1048         struct channel_obj *ch = video_get_drvdata(vdev);
1049         struct vpif_capture_chan_config *chan_cfg;
1050         struct v4l2_input input;
1051         int ret;
1052
1053         if (config->chan_config[ch->channel_id].inputs == NULL)
1054                 return -ENODATA;
1055
1056         chan_cfg = &config->chan_config[ch->channel_id];
1057         input = chan_cfg->inputs[ch->input_idx].input;
1058         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1059                 return -ENODATA;
1060
1061         timings->pad = 0;
1062
1063         ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1064         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1065                 return -EINVAL;
1066
1067         return ret;
1068 }
1069
1070 /**
1071  * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1072  * @file: file ptr
1073  * @priv: file handle
1074  * @timings: input timings
1075  */
1076 static int
1077 vpif_query_dv_timings(struct file *file, void *priv,
1078                       struct v4l2_dv_timings *timings)
1079 {
1080         struct vpif_capture_config *config = vpif_dev->platform_data;
1081         struct video_device *vdev = video_devdata(file);
1082         struct channel_obj *ch = video_get_drvdata(vdev);
1083         struct vpif_capture_chan_config *chan_cfg;
1084         struct v4l2_input input;
1085         int ret;
1086
1087         if (config->chan_config[ch->channel_id].inputs == NULL)
1088                 return -ENODATA;
1089
1090         chan_cfg = &config->chan_config[ch->channel_id];
1091         input = chan_cfg->inputs[ch->input_idx].input;
1092         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1093                 return -ENODATA;
1094
1095         ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1096         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1097                 return -ENODATA;
1098
1099         return ret;
1100 }
1101
1102 /**
1103  * vpif_s_dv_timings() - S_DV_TIMINGS handler
1104  * @file: file ptr
1105  * @priv: file handle
1106  * @timings: digital video timings
1107  */
1108 static int vpif_s_dv_timings(struct file *file, void *priv,
1109                 struct v4l2_dv_timings *timings)
1110 {
1111         struct vpif_capture_config *config = vpif_dev->platform_data;
1112         struct video_device *vdev = video_devdata(file);
1113         struct channel_obj *ch = video_get_drvdata(vdev);
1114         struct vpif_params *vpifparams = &ch->vpifparams;
1115         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1116         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1117         struct video_obj *vid_ch = &ch->video;
1118         struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1119         struct vpif_capture_chan_config *chan_cfg;
1120         struct v4l2_input input;
1121         int ret;
1122
1123         if (config->chan_config[ch->channel_id].inputs == NULL)
1124                 return -ENODATA;
1125
1126         chan_cfg = &config->chan_config[ch->channel_id];
1127         input = chan_cfg->inputs[ch->input_idx].input;
1128         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1129                 return -ENODATA;
1130
1131         if (timings->type != V4L2_DV_BT_656_1120) {
1132                 vpif_dbg(2, debug, "Timing type not defined\n");
1133                 return -EINVAL;
1134         }
1135
1136         if (vb2_is_busy(&common->buffer_queue))
1137                 return -EBUSY;
1138
1139         /* Configure subdevice timings, if any */
1140         ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1141         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1142                 ret = 0;
1143         if (ret < 0) {
1144                 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1145                 return ret;
1146         }
1147
1148         if (!(timings->bt.width && timings->bt.height &&
1149                                 (timings->bt.hbackporch ||
1150                                  timings->bt.hfrontporch ||
1151                                  timings->bt.hsync) &&
1152                                 timings->bt.vfrontporch &&
1153                                 (timings->bt.vbackporch ||
1154                                  timings->bt.vsync))) {
1155                 vpif_dbg(2, debug, "Timings for width, height, "
1156                                 "horizontal back porch, horizontal sync, "
1157                                 "horizontal front porch, vertical back porch, "
1158                                 "vertical sync and vertical back porch "
1159                                 "must be defined\n");
1160                 return -EINVAL;
1161         }
1162
1163         vid_ch->dv_timings = *timings;
1164
1165         /* Configure video port timings */
1166
1167         std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1168         std_info->sav2eav = bt->width;
1169
1170         std_info->l1 = 1;
1171         std_info->l3 = bt->vsync + bt->vbackporch + 1;
1172
1173         std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1174         if (bt->interlaced) {
1175                 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1176                         std_info->l5 = std_info->vsize/2 -
1177                                 (bt->vfrontporch - 1);
1178                         std_info->l7 = std_info->vsize/2 + 1;
1179                         std_info->l9 = std_info->l7 + bt->il_vsync +
1180                                 bt->il_vbackporch + 1;
1181                         std_info->l11 = std_info->vsize -
1182                                 (bt->il_vfrontporch - 1);
1183                 } else {
1184                         vpif_dbg(2, debug, "Required timing values for "
1185                                         "interlaced BT format missing\n");
1186                         return -EINVAL;
1187                 }
1188         } else {
1189                 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1190         }
1191         strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
1192         std_info->width = bt->width;
1193         std_info->height = bt->height;
1194         std_info->frm_fmt = bt->interlaced ? 0 : 1;
1195         std_info->ycmux_mode = 0;
1196         std_info->capture_format = 0;
1197         std_info->vbi_supported = 0;
1198         std_info->hd_sd = 1;
1199         std_info->stdid = 0;
1200
1201         vid_ch->stdid = 0;
1202         return 0;
1203 }
1204
1205 /**
1206  * vpif_g_dv_timings() - G_DV_TIMINGS handler
1207  * @file: file ptr
1208  * @priv: file handle
1209  * @timings: digital video timings
1210  */
1211 static int vpif_g_dv_timings(struct file *file, void *priv,
1212                 struct v4l2_dv_timings *timings)
1213 {
1214         struct vpif_capture_config *config = vpif_dev->platform_data;
1215         struct video_device *vdev = video_devdata(file);
1216         struct channel_obj *ch = video_get_drvdata(vdev);
1217         struct video_obj *vid_ch = &ch->video;
1218         struct vpif_capture_chan_config *chan_cfg;
1219         struct v4l2_input input;
1220
1221         if (config->chan_config[ch->channel_id].inputs == NULL)
1222                 return -ENODATA;
1223
1224         chan_cfg = &config->chan_config[ch->channel_id];
1225         input = chan_cfg->inputs[ch->input_idx].input;
1226         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1227                 return -ENODATA;
1228
1229         *timings = vid_ch->dv_timings;
1230
1231         return 0;
1232 }
1233
1234 /*
1235  * vpif_log_status() - Status information
1236  * @file: file ptr
1237  * @priv: file handle
1238  *
1239  * Returns zero.
1240  */
1241 static int vpif_log_status(struct file *filep, void *priv)
1242 {
1243         /* status for sub devices */
1244         v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1245
1246         return 0;
1247 }
1248
1249 /* vpif capture ioctl operations */
1250 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1251         .vidioc_querycap                = vpif_querycap,
1252         .vidioc_enum_fmt_vid_cap        = vpif_enum_fmt_vid_cap,
1253         .vidioc_g_fmt_vid_cap           = vpif_g_fmt_vid_cap,
1254         .vidioc_s_fmt_vid_cap           = vpif_s_fmt_vid_cap,
1255         .vidioc_try_fmt_vid_cap         = vpif_try_fmt_vid_cap,
1256
1257         .vidioc_enum_input              = vpif_enum_input,
1258         .vidioc_s_input                 = vpif_s_input,
1259         .vidioc_g_input                 = vpif_g_input,
1260
1261         .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
1262         .vidioc_create_bufs             = vb2_ioctl_create_bufs,
1263         .vidioc_querybuf                = vb2_ioctl_querybuf,
1264         .vidioc_qbuf                    = vb2_ioctl_qbuf,
1265         .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
1266         .vidioc_expbuf                  = vb2_ioctl_expbuf,
1267         .vidioc_streamon                = vb2_ioctl_streamon,
1268         .vidioc_streamoff               = vb2_ioctl_streamoff,
1269
1270         .vidioc_querystd                = vpif_querystd,
1271         .vidioc_s_std                   = vpif_s_std,
1272         .vidioc_g_std                   = vpif_g_std,
1273
1274         .vidioc_enum_dv_timings         = vpif_enum_dv_timings,
1275         .vidioc_query_dv_timings        = vpif_query_dv_timings,
1276         .vidioc_s_dv_timings            = vpif_s_dv_timings,
1277         .vidioc_g_dv_timings            = vpif_g_dv_timings,
1278
1279         .vidioc_log_status              = vpif_log_status,
1280 };
1281
1282 /* vpif file operations */
1283 static struct v4l2_file_operations vpif_fops = {
1284         .owner = THIS_MODULE,
1285         .open = v4l2_fh_open,
1286         .release = vb2_fop_release,
1287         .unlocked_ioctl = video_ioctl2,
1288         .mmap = vb2_fop_mmap,
1289         .poll = vb2_fop_poll
1290 };
1291
1292 /**
1293  * initialize_vpif() - Initialize vpif data structures
1294  *
1295  * Allocate memory for data structures and initialize them
1296  */
1297 static int initialize_vpif(void)
1298 {
1299         int err, i, j;
1300         int free_channel_objects_index;
1301
1302         /* Allocate memory for six channel objects */
1303         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1304                 vpif_obj.dev[i] =
1305                     kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1306                 /* If memory allocation fails, return error */
1307                 if (!vpif_obj.dev[i]) {
1308                         free_channel_objects_index = i;
1309                         err = -ENOMEM;
1310                         goto vpif_init_free_channel_objects;
1311                 }
1312         }
1313         return 0;
1314
1315 vpif_init_free_channel_objects:
1316         for (j = 0; j < free_channel_objects_index; j++)
1317                 kfree(vpif_obj.dev[j]);
1318         return err;
1319 }
1320
1321 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1322                             struct v4l2_subdev *subdev,
1323                             struct v4l2_async_subdev *asd)
1324 {
1325         int i;
1326
1327         for (i = 0; i < vpif_obj.config->subdev_count; i++)
1328                 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1329                             subdev->name)) {
1330                         vpif_obj.sd[i] = subdev;
1331                         return 0;
1332                 }
1333
1334         return -EINVAL;
1335 }
1336
1337 static int vpif_probe_complete(void)
1338 {
1339         struct common_obj *common;
1340         struct video_device *vdev;
1341         struct channel_obj *ch;
1342         struct vb2_queue *q;
1343         int j, err, k;
1344
1345         for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1346                 ch = vpif_obj.dev[j];
1347                 ch->channel_id = j;
1348                 common = &(ch->common[VPIF_VIDEO_INDEX]);
1349                 spin_lock_init(&common->irqlock);
1350                 mutex_init(&common->lock);
1351
1352                 /* select input 0 */
1353                 err = vpif_set_input(vpif_obj.config, ch, 0);
1354                 if (err)
1355                         goto probe_out;
1356
1357                 /* set initial format */
1358                 ch->video.stdid = V4L2_STD_525_60;
1359                 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1360                 vpif_update_std_info(ch);
1361
1362                 /* Initialize vb2 queue */
1363                 q = &common->buffer_queue;
1364                 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1365                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1366                 q->drv_priv = ch;
1367                 q->ops = &video_qops;
1368                 q->mem_ops = &vb2_dma_contig_memops;
1369                 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1370                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1371                 q->min_buffers_needed = 1;
1372                 q->lock = &common->lock;
1373                 q->dev = vpif_dev;
1374
1375                 err = vb2_queue_init(q);
1376                 if (err) {
1377                         vpif_err("vpif_capture: vb2_queue_init() failed\n");
1378                         goto probe_out;
1379                 }
1380
1381                 INIT_LIST_HEAD(&common->dma_queue);
1382
1383                 /* Initialize the video_device structure */
1384                 vdev = &ch->video_dev;
1385                 strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1386                 vdev->release = video_device_release_empty;
1387                 vdev->fops = &vpif_fops;
1388                 vdev->ioctl_ops = &vpif_ioctl_ops;
1389                 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1390                 vdev->vfl_dir = VFL_DIR_RX;
1391                 vdev->queue = q;
1392                 vdev->lock = &common->lock;
1393                 video_set_drvdata(&ch->video_dev, ch);
1394                 err = video_register_device(vdev,
1395                                             VFL_TYPE_GRABBER, (j ? 1 : 0));
1396                 if (err)
1397                         goto probe_out;
1398         }
1399
1400         v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1401         return 0;
1402
1403 probe_out:
1404         for (k = 0; k < j; k++) {
1405                 /* Get the pointer to the channel object */
1406                 ch = vpif_obj.dev[k];
1407                 common = &ch->common[k];
1408                 /* Unregister video device */
1409                 video_unregister_device(&ch->video_dev);
1410         }
1411         kfree(vpif_obj.sd);
1412         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1413
1414         return err;
1415 }
1416
1417 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1418 {
1419         return vpif_probe_complete();
1420 }
1421
1422 /**
1423  * vpif_probe : This function probes the vpif capture driver
1424  * @pdev: platform device pointer
1425  *
1426  * This creates device entries by register itself to the V4L2 driver and
1427  * initializes fields of each channel objects
1428  */
1429 static __init int vpif_probe(struct platform_device *pdev)
1430 {
1431         struct vpif_subdev_info *subdevdata;
1432         struct i2c_adapter *i2c_adap;
1433         struct resource *res;
1434         int subdev_count;
1435         int res_idx = 0;
1436         int i, err;
1437
1438         vpif_dev = &pdev->dev;
1439
1440         err = initialize_vpif();
1441         if (err) {
1442                 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1443                 return err;
1444         }
1445
1446         err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1447         if (err) {
1448                 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1449                 return err;
1450         }
1451
1452         while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1453                 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1454                                         IRQF_SHARED, VPIF_DRIVER_NAME,
1455                                         (void *)(&vpif_obj.dev[res_idx]->
1456                                         channel_id));
1457                 if (err) {
1458                         err = -EINVAL;
1459                         goto vpif_unregister;
1460                 }
1461                 res_idx++;
1462         }
1463
1464         vpif_obj.config = pdev->dev.platform_data;
1465
1466         subdev_count = vpif_obj.config->subdev_count;
1467         vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1468                                 GFP_KERNEL);
1469         if (vpif_obj.sd == NULL) {
1470                 vpif_err("unable to allocate memory for subdevice pointers\n");
1471                 err = -ENOMEM;
1472                 goto vpif_unregister;
1473         }
1474
1475         if (!vpif_obj.config->asd_sizes) {
1476                 i2c_adap = i2c_get_adapter(1);
1477                 for (i = 0; i < subdev_count; i++) {
1478                         subdevdata = &vpif_obj.config->subdev_info[i];
1479                         vpif_obj.sd[i] =
1480                                 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1481                                                           i2c_adap,
1482                                                           &subdevdata->
1483                                                           board_info,
1484                                                           NULL);
1485
1486                         if (!vpif_obj.sd[i]) {
1487                                 vpif_err("Error registering v4l2 subdevice\n");
1488                                 err = -ENODEV;
1489                                 goto probe_subdev_out;
1490                         }
1491                         v4l2_info(&vpif_obj.v4l2_dev,
1492                                   "registered sub device %s\n",
1493                                    subdevdata->name);
1494                 }
1495                 vpif_probe_complete();
1496         } else {
1497                 vpif_obj.notifier.subdevs = vpif_obj.config->asd;
1498                 vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
1499                 vpif_obj.notifier.bound = vpif_async_bound;
1500                 vpif_obj.notifier.complete = vpif_async_complete;
1501                 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1502                                                    &vpif_obj.notifier);
1503                 if (err) {
1504                         vpif_err("Error registering async notifier\n");
1505                         err = -EINVAL;
1506                         goto probe_subdev_out;
1507                 }
1508         }
1509
1510         return 0;
1511
1512 probe_subdev_out:
1513         /* free sub devices memory */
1514         kfree(vpif_obj.sd);
1515 vpif_unregister:
1516         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1517
1518         return err;
1519 }
1520
1521 /**
1522  * vpif_remove() - driver remove handler
1523  * @device: ptr to platform device structure
1524  *
1525  * The vidoe device is unregistered
1526  */
1527 static int vpif_remove(struct platform_device *device)
1528 {
1529         struct common_obj *common;
1530         struct channel_obj *ch;
1531         int i;
1532
1533         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1534
1535         kfree(vpif_obj.sd);
1536         /* un-register device */
1537         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1538                 /* Get the pointer to the channel object */
1539                 ch = vpif_obj.dev[i];
1540                 common = &ch->common[VPIF_VIDEO_INDEX];
1541                 /* Unregister video device */
1542                 video_unregister_device(&ch->video_dev);
1543                 kfree(vpif_obj.dev[i]);
1544         }
1545         return 0;
1546 }
1547
1548 #ifdef CONFIG_PM_SLEEP
1549 /**
1550  * vpif_suspend: vpif device suspend
1551  */
1552 static int vpif_suspend(struct device *dev)
1553 {
1554
1555         struct common_obj *common;
1556         struct channel_obj *ch;
1557         int i;
1558
1559         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1560                 /* Get the pointer to the channel object */
1561                 ch = vpif_obj.dev[i];
1562                 common = &ch->common[VPIF_VIDEO_INDEX];
1563
1564                 if (!vb2_start_streaming_called(&common->buffer_queue))
1565                         continue;
1566
1567                 mutex_lock(&common->lock);
1568                 /* Disable channel */
1569                 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1570                         enable_channel0(0);
1571                         channel0_intr_enable(0);
1572                 }
1573                 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1574                         ycmux_mode == 2) {
1575                         enable_channel1(0);
1576                         channel1_intr_enable(0);
1577                 }
1578                 mutex_unlock(&common->lock);
1579         }
1580
1581         return 0;
1582 }
1583
1584 /*
1585  * vpif_resume: vpif device suspend
1586  */
1587 static int vpif_resume(struct device *dev)
1588 {
1589         struct common_obj *common;
1590         struct channel_obj *ch;
1591         int i;
1592
1593         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1594                 /* Get the pointer to the channel object */
1595                 ch = vpif_obj.dev[i];
1596                 common = &ch->common[VPIF_VIDEO_INDEX];
1597
1598                 if (!vb2_start_streaming_called(&common->buffer_queue))
1599                         continue;
1600
1601                 mutex_lock(&common->lock);
1602                 /* Enable channel */
1603                 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1604                         enable_channel0(1);
1605                         channel0_intr_enable(1);
1606                 }
1607                 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1608                         ycmux_mode == 2) {
1609                         enable_channel1(1);
1610                         channel1_intr_enable(1);
1611                 }
1612                 mutex_unlock(&common->lock);
1613         }
1614
1615         return 0;
1616 }
1617 #endif
1618
1619 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1620
1621 static __refdata struct platform_driver vpif_driver = {
1622         .driver = {
1623                 .name   = VPIF_DRIVER_NAME,
1624                 .pm     = &vpif_pm_ops,
1625         },
1626         .probe = vpif_probe,
1627         .remove = vpif_remove,
1628 };
1629
1630 module_platform_driver(vpif_driver);