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

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