drivers/media/platform/davinci/vpif

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
to_vpif_buffer
vpif_buffer_prepare
vpif_buffer_queue_setup
vpif_buffer_queue
vpif_start_streaming
vpif_stop_streaming
vpif_process_buffer_complete
vpif_schedule_next_buffer
vpif_channel_isr
vpif_update_std_info
vpif_calculate_offsets
vpif_get_default_field
vpif_config_addr
vpif_input_to_subdev
vpif_set_input
vpif_querystd
vpif_g_std
vpif_s_std
vpif_enum_input
vpif_g_input
vpif_s_input
vpif_enum_fmt_vid_cap
vpif_try_fmt_vid_cap
vpif_g_fmt_vid_cap
vpif_s_fmt_vid_cap
vpif_querycap
vpif_enum_dv_timings
vpif_query_dv_timings
vpif_s_dv_timings
vpif_g_dv_timings
vpif_log_status
initialize_vpif
free_vpif_objs
vpif_async_bound
vpif_probe_complete
vpif_async_complete
vpif_capture_get_pdata
vpif_probe
vpif_remove
vpif_suspend
vpif_resume
   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_get_default_field() - Get default field type based on interface
 623  * @iface: ptr to vpif interface
 624  */
 625 static inline enum v4l2_field vpif_get_default_field(
 626                                 struct vpif_interface *iface)
 627 {
 628         return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
 629                                                 V4L2_FIELD_INTERLACED;
 630 }
 631 
 632 /**
 633  * vpif_config_addr() - function to configure buffer address in vpif
 634  * @ch: channel ptr
 635  * @muxmode: channel mux mode
 636  */
 637 static void vpif_config_addr(struct channel_obj *ch, int muxmode)
 638 {
 639         struct common_obj *common;
 640 
 641         vpif_dbg(2, debug, "vpif_config_addr\n");
 642 
 643         common = &(ch->common[VPIF_VIDEO_INDEX]);
 644 
 645         if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
 646                 common->set_addr = ch1_set_videobuf_addr;
 647         else if (2 == muxmode)
 648                 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
 649         else
 650                 common->set_addr = ch0_set_videobuf_addr;
 651 }
 652 
 653 /**
 654  * vpif_input_to_subdev() - Maps input to sub device
 655  * @vpif_cfg: global config ptr
 656  * @chan_cfg: channel config ptr
 657  * @input_index: Given input index from application
 658  *
 659  * lookup the sub device information for a given input index.
 660  * we report all the inputs to application. inputs table also
 661  * has sub device name for the each input
 662  */
 663 static int vpif_input_to_subdev(
 664                 struct vpif_capture_config *vpif_cfg,
 665                 struct vpif_capture_chan_config *chan_cfg,
 666                 int input_index)
 667 {
 668         struct vpif_subdev_info *subdev_info;
 669         const char *subdev_name;
 670         int i;
 671 
 672         vpif_dbg(2, debug, "vpif_input_to_subdev\n");
 673 
 674         if (!chan_cfg)
 675                 return -1;
 676         if (input_index >= chan_cfg->input_count)
 677                 return -1;
 678         subdev_name = chan_cfg->inputs[input_index].subdev_name;
 679         if (!subdev_name)
 680                 return -1;
 681 
 682         /* loop through the sub device list to get the sub device info */
 683         for (i = 0; i < vpif_cfg->subdev_count; i++) {
 684                 subdev_info = &vpif_cfg->subdev_info[i];
 685                 if (subdev_info && !strcmp(subdev_info->name, subdev_name))
 686                         return i;
 687         }
 688         return -1;
 689 }
 690 
 691 /**
 692  * vpif_set_input() - Select an input
 693  * @vpif_cfg: global config ptr
 694  * @ch: channel
 695  * @index: Given input index from application
 696  *
 697  * Select the given input.
 698  */
 699 static int vpif_set_input(
 700                 struct vpif_capture_config *vpif_cfg,
 701                 struct channel_obj *ch,
 702                 int index)
 703 {
 704         struct vpif_capture_chan_config *chan_cfg =
 705                         &vpif_cfg->chan_config[ch->channel_id];
 706         struct vpif_subdev_info *subdev_info = NULL;
 707         struct v4l2_subdev *sd = NULL;
 708         u32 input = 0, output = 0;
 709         int sd_index;
 710         int ret;
 711 
 712         sd_index = vpif_input_to_subdev(vpif_cfg, chan_cfg, index);
 713         if (sd_index >= 0) {
 714                 sd = vpif_obj.sd[sd_index];
 715                 subdev_info = &vpif_cfg->subdev_info[sd_index];
 716         } else {
 717                 /* no subdevice, no input to setup */
 718                 return 0;
 719         }
 720 
 721         /* first setup input path from sub device to vpif */
 722         if (sd && vpif_cfg->setup_input_path) {
 723                 ret = vpif_cfg->setup_input_path(ch->channel_id,
 724                                        subdev_info->name);
 725                 if (ret < 0) {
 726                         vpif_dbg(1, debug, "couldn't setup input path for the" \
 727                         " sub device %s, for input index %d\n",
 728                         subdev_info->name, index);
 729                         return ret;
 730                 }
 731         }
 732 
 733         if (sd) {
 734                 input = chan_cfg->inputs[index].input_route;
 735                 output = chan_cfg->inputs[index].output_route;
 736                 ret = v4l2_subdev_call(sd, video, s_routing,
 737                                 input, output, 0);
 738                 if (ret < 0 && ret != -ENOIOCTLCMD) {
 739                         vpif_dbg(1, debug, "Failed to set input\n");
 740                         return ret;
 741                 }
 742         }
 743         ch->input_idx = index;
 744         ch->sd = sd;
 745         /* copy interface parameters to vpif */
 746         ch->vpifparams.iface = chan_cfg->vpif_if;
 747 
 748         /* update tvnorms from the sub device input info */
 749         ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
 750         return 0;
 751 }
 752 
 753 /**
 754  * vpif_querystd() - querystd handler
 755  * @file: file ptr
 756  * @priv: file handle
 757  * @std_id: ptr to std id
 758  *
 759  * This function is called to detect standard at the selected input
 760  */
 761 static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
 762 {
 763         struct video_device *vdev = video_devdata(file);
 764         struct channel_obj *ch = video_get_drvdata(vdev);
 765         int ret;
 766 
 767         vpif_dbg(2, debug, "vpif_querystd\n");
 768 
 769         /* Call querystd function of decoder device */
 770         ret = v4l2_subdev_call(ch->sd, video, querystd, std_id);
 771 
 772         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
 773                 return -ENODATA;
 774         if (ret) {
 775                 vpif_dbg(1, debug, "Failed to query standard for sub devices\n");
 776                 return ret;
 777         }
 778 
 779         return 0;
 780 }
 781 
 782 /**
 783  * vpif_g_std() - get STD handler
 784  * @file: file ptr
 785  * @priv: file handle
 786  * @std: ptr to std id
 787  */
 788 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
 789 {
 790         struct vpif_capture_config *config = vpif_dev->platform_data;
 791         struct video_device *vdev = video_devdata(file);
 792         struct channel_obj *ch = video_get_drvdata(vdev);
 793         struct vpif_capture_chan_config *chan_cfg;
 794         struct v4l2_input input;
 795 
 796         vpif_dbg(2, debug, "vpif_g_std\n");
 797 
 798         if (!config->chan_config[ch->channel_id].inputs)
 799                 return -ENODATA;
 800 
 801         chan_cfg = &config->chan_config[ch->channel_id];
 802         input = chan_cfg->inputs[ch->input_idx].input;
 803         if (input.capabilities != V4L2_IN_CAP_STD)
 804                 return -ENODATA;
 805 
 806         *std = ch->video.stdid;
 807         return 0;
 808 }
 809 
 810 /**
 811  * vpif_s_std() - set STD handler
 812  * @file: file ptr
 813  * @priv: file handle
 814  * @std_id: ptr to std id
 815  */
 816 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
 817 {
 818         struct vpif_capture_config *config = vpif_dev->platform_data;
 819         struct video_device *vdev = video_devdata(file);
 820         struct channel_obj *ch = video_get_drvdata(vdev);
 821         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 822         struct vpif_capture_chan_config *chan_cfg;
 823         struct v4l2_input input;
 824         int ret;
 825 
 826         vpif_dbg(2, debug, "vpif_s_std\n");
 827 
 828         if (!config->chan_config[ch->channel_id].inputs)
 829                 return -ENODATA;
 830 
 831         chan_cfg = &config->chan_config[ch->channel_id];
 832         input = chan_cfg->inputs[ch->input_idx].input;
 833         if (input.capabilities != V4L2_IN_CAP_STD)
 834                 return -ENODATA;
 835 
 836         if (vb2_is_busy(&common->buffer_queue))
 837                 return -EBUSY;
 838 
 839         /* Call encoder subdevice function to set the standard */
 840         ch->video.stdid = std_id;
 841         memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
 842 
 843         /* Get the information about the standard */
 844         if (vpif_update_std_info(ch)) {
 845                 vpif_err("Error getting the standard info\n");
 846                 return -EINVAL;
 847         }
 848 
 849         /* set standard in the sub device */
 850         ret = v4l2_subdev_call(ch->sd, video, s_std, std_id);
 851         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 852                 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
 853                 return ret;
 854         }
 855         return 0;
 856 }
 857 
 858 /**
 859  * vpif_enum_input() - ENUMINPUT handler
 860  * @file: file ptr
 861  * @priv: file handle
 862  * @input: ptr to input structure
 863  */
 864 static int vpif_enum_input(struct file *file, void *priv,
 865                                 struct v4l2_input *input)
 866 {
 867 
 868         struct vpif_capture_config *config = vpif_dev->platform_data;
 869         struct video_device *vdev = video_devdata(file);
 870         struct channel_obj *ch = video_get_drvdata(vdev);
 871         struct vpif_capture_chan_config *chan_cfg;
 872 
 873         chan_cfg = &config->chan_config[ch->channel_id];
 874 
 875         if (input->index >= chan_cfg->input_count)
 876                 return -EINVAL;
 877 
 878         memcpy(input, &chan_cfg->inputs[input->index].input,
 879                 sizeof(*input));
 880         return 0;
 881 }
 882 
 883 /**
 884  * vpif_g_input() - Get INPUT handler
 885  * @file: file ptr
 886  * @priv: file handle
 887  * @index: ptr to input index
 888  */
 889 static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
 890 {
 891         struct video_device *vdev = video_devdata(file);
 892         struct channel_obj *ch = video_get_drvdata(vdev);
 893 
 894         *index = ch->input_idx;
 895         return 0;
 896 }
 897 
 898 /**
 899  * vpif_s_input() - Set INPUT handler
 900  * @file: file ptr
 901  * @priv: file handle
 902  * @index: input index
 903  */
 904 static int vpif_s_input(struct file *file, void *priv, unsigned int index)
 905 {
 906         struct vpif_capture_config *config = vpif_dev->platform_data;
 907         struct video_device *vdev = video_devdata(file);
 908         struct channel_obj *ch = video_get_drvdata(vdev);
 909         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 910         struct vpif_capture_chan_config *chan_cfg;
 911 
 912         chan_cfg = &config->chan_config[ch->channel_id];
 913 
 914         if (index >= chan_cfg->input_count)
 915                 return -EINVAL;
 916 
 917         if (vb2_is_busy(&common->buffer_queue))
 918                 return -EBUSY;
 919 
 920         return vpif_set_input(config, ch, index);
 921 }
 922 
 923 /**
 924  * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
 925  * @file: file ptr
 926  * @priv: file handle
 927  * @fmt: ptr to V4L2 format descriptor
 928  */
 929 static int vpif_enum_fmt_vid_cap(struct file *file, void  *priv,
 930                                         struct v4l2_fmtdesc *fmt)
 931 {
 932         struct video_device *vdev = video_devdata(file);
 933         struct channel_obj *ch = video_get_drvdata(vdev);
 934 
 935         if (fmt->index != 0) {
 936                 vpif_dbg(1, debug, "Invalid format index\n");
 937                 return -EINVAL;
 938         }
 939 
 940         /* Fill in the information about format */
 941         if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
 942                 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
 943         else
 944                 fmt->pixelformat = V4L2_PIX_FMT_NV16;
 945         return 0;
 946 }
 947 
 948 /**
 949  * vpif_try_fmt_vid_cap() - TRY_FMT handler
 950  * @file: file ptr
 951  * @priv: file handle
 952  * @fmt: ptr to v4l2 format structure
 953  */
 954 static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
 955                                 struct v4l2_format *fmt)
 956 {
 957         struct video_device *vdev = video_devdata(file);
 958         struct channel_obj *ch = video_get_drvdata(vdev);
 959         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 960         struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
 961 
 962         common->fmt = *fmt;
 963         vpif_update_std_info(ch);
 964 
 965         pixfmt->field = common->fmt.fmt.pix.field;
 966         pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
 967         pixfmt->bytesperline = common->fmt.fmt.pix.width;
 968         pixfmt->width = common->fmt.fmt.pix.width;
 969         pixfmt->height = common->fmt.fmt.pix.height;
 970         pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
 971         if (pixfmt->pixelformat == V4L2_PIX_FMT_SGRBG10) {
 972                 pixfmt->bytesperline = common->fmt.fmt.pix.width * 2;
 973                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 974         }
 975 
 976         dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d pixelformat=0x%08x, field=%d, size=%d\n", __func__,
 977                 pixfmt->width, pixfmt->height,
 978                 pixfmt->bytesperline, pixfmt->pixelformat,
 979                 pixfmt->field, pixfmt->sizeimage);
 980 
 981         return 0;
 982 }
 983 
 984 
 985 /**
 986  * vpif_g_fmt_vid_cap() - Set INPUT handler
 987  * @file: file ptr
 988  * @priv: file handle
 989  * @fmt: ptr to v4l2 format structure
 990  */
 991 static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
 992                                 struct v4l2_format *fmt)
 993 {
 994         struct video_device *vdev = video_devdata(file);
 995         struct channel_obj *ch = video_get_drvdata(vdev);
 996         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
 997         struct v4l2_pix_format *pix_fmt = &fmt->fmt.pix;
 998         struct v4l2_subdev_format format = {
 999                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1000         };
1001         struct v4l2_mbus_framefmt *mbus_fmt = &format.format;
1002         int ret;
1003 
1004         /* Check the validity of the buffer type */
1005         if (common->fmt.type != fmt->type)
1006                 return -EINVAL;
1007 
1008         /* By default, use currently set fmt */
1009         *fmt = common->fmt;
1010 
1011         /* If subdev has get_fmt, use that to override */
1012         ret = v4l2_subdev_call(ch->sd, pad, get_fmt, NULL, &format);
1013         if (!ret && mbus_fmt->code) {
1014                 v4l2_fill_pix_format(pix_fmt, mbus_fmt);
1015                 pix_fmt->bytesperline = pix_fmt->width;
1016                 if (mbus_fmt->code == MEDIA_BUS_FMT_SGRBG10_1X10) {
1017                         /* e.g. mt9v032 */
1018                         pix_fmt->pixelformat = V4L2_PIX_FMT_SGRBG10;
1019                         pix_fmt->bytesperline = pix_fmt->width * 2;
1020                 } else if (mbus_fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) {
1021                         /* e.g. tvp514x */
1022                         pix_fmt->pixelformat = V4L2_PIX_FMT_NV16;
1023                         pix_fmt->bytesperline = pix_fmt->width * 2;
1024                 } else {
1025                         dev_warn(vpif_dev, "%s: Unhandled media-bus format 0x%x\n",
1026                                  __func__, mbus_fmt->code);
1027                 }
1028                 pix_fmt->sizeimage = pix_fmt->bytesperline * pix_fmt->height;
1029                 dev_dbg(vpif_dev, "%s: %d x %d; pitch=%d, pixelformat=0x%08x, code=0x%x, field=%d, size=%d\n", __func__,
1030                         pix_fmt->width, pix_fmt->height,
1031                         pix_fmt->bytesperline, pix_fmt->pixelformat,
1032                         mbus_fmt->code, pix_fmt->field, pix_fmt->sizeimage);
1033 
1034                 common->fmt = *fmt;
1035                 vpif_update_std_info(ch);
1036         }
1037 
1038         return 0;
1039 }
1040 
1041 /**
1042  * vpif_s_fmt_vid_cap() - Set FMT handler
1043  * @file: file ptr
1044  * @priv: file handle
1045  * @fmt: ptr to v4l2 format structure
1046  */
1047 static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
1048                                 struct v4l2_format *fmt)
1049 {
1050         struct video_device *vdev = video_devdata(file);
1051         struct channel_obj *ch = video_get_drvdata(vdev);
1052         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1053         int ret;
1054 
1055         vpif_dbg(2, debug, "%s\n", __func__);
1056 
1057         if (vb2_is_busy(&common->buffer_queue))
1058                 return -EBUSY;
1059 
1060         ret = vpif_try_fmt_vid_cap(file, priv, fmt);
1061         if (ret)
1062                 return ret;
1063 
1064         /* store the format in the channel object */
1065         common->fmt = *fmt;
1066         return 0;
1067 }
1068 
1069 /**
1070  * vpif_querycap() - QUERYCAP handler
1071  * @file: file ptr
1072  * @priv: file handle
1073  * @cap: ptr to v4l2_capability structure
1074  */
1075 static int vpif_querycap(struct file *file, void  *priv,
1076                                 struct v4l2_capability *cap)
1077 {
1078         struct vpif_capture_config *config = vpif_dev->platform_data;
1079 
1080         strscpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
1081         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1082                  dev_name(vpif_dev));
1083         strscpy(cap->card, config->card_name, sizeof(cap->card));
1084 
1085         return 0;
1086 }
1087 
1088 /**
1089  * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1090  * @file: file ptr
1091  * @priv: file handle
1092  * @timings: input timings
1093  */
1094 static int
1095 vpif_enum_dv_timings(struct file *file, void *priv,
1096                      struct v4l2_enum_dv_timings *timings)
1097 {
1098         struct vpif_capture_config *config = vpif_dev->platform_data;
1099         struct video_device *vdev = video_devdata(file);
1100         struct channel_obj *ch = video_get_drvdata(vdev);
1101         struct vpif_capture_chan_config *chan_cfg;
1102         struct v4l2_input input;
1103         int ret;
1104 
1105         if (!config->chan_config[ch->channel_id].inputs)
1106                 return -ENODATA;
1107 
1108         chan_cfg = &config->chan_config[ch->channel_id];
1109         input = chan_cfg->inputs[ch->input_idx].input;
1110         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1111                 return -ENODATA;
1112 
1113         timings->pad = 0;
1114 
1115         ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
1116         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1117                 return -EINVAL;
1118 
1119         return ret;
1120 }
1121 
1122 /**
1123  * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1124  * @file: file ptr
1125  * @priv: file handle
1126  * @timings: input timings
1127  */
1128 static int
1129 vpif_query_dv_timings(struct file *file, void *priv,
1130                       struct v4l2_dv_timings *timings)
1131 {
1132         struct vpif_capture_config *config = vpif_dev->platform_data;
1133         struct video_device *vdev = video_devdata(file);
1134         struct channel_obj *ch = video_get_drvdata(vdev);
1135         struct vpif_capture_chan_config *chan_cfg;
1136         struct v4l2_input input;
1137         int ret;
1138 
1139         if (!config->chan_config[ch->channel_id].inputs)
1140                 return -ENODATA;
1141 
1142         chan_cfg = &config->chan_config[ch->channel_id];
1143         input = chan_cfg->inputs[ch->input_idx].input;
1144         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1145                 return -ENODATA;
1146 
1147         ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings);
1148         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1149                 return -ENODATA;
1150 
1151         return ret;
1152 }
1153 
1154 /**
1155  * vpif_s_dv_timings() - S_DV_TIMINGS handler
1156  * @file: file ptr
1157  * @priv: file handle
1158  * @timings: digital video timings
1159  */
1160 static int vpif_s_dv_timings(struct file *file, void *priv,
1161                 struct v4l2_dv_timings *timings)
1162 {
1163         struct vpif_capture_config *config = vpif_dev->platform_data;
1164         struct video_device *vdev = video_devdata(file);
1165         struct channel_obj *ch = video_get_drvdata(vdev);
1166         struct vpif_params *vpifparams = &ch->vpifparams;
1167         struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1168         struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1169         struct video_obj *vid_ch = &ch->video;
1170         struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
1171         struct vpif_capture_chan_config *chan_cfg;
1172         struct v4l2_input input;
1173         int ret;
1174 
1175         if (!config->chan_config[ch->channel_id].inputs)
1176                 return -ENODATA;
1177 
1178         chan_cfg = &config->chan_config[ch->channel_id];
1179         input = chan_cfg->inputs[ch->input_idx].input;
1180         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1181                 return -ENODATA;
1182 
1183         if (timings->type != V4L2_DV_BT_656_1120) {
1184                 vpif_dbg(2, debug, "Timing type not defined\n");
1185                 return -EINVAL;
1186         }
1187 
1188         if (vb2_is_busy(&common->buffer_queue))
1189                 return -EBUSY;
1190 
1191         /* Configure subdevice timings, if any */
1192         ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
1193         if (ret == -ENOIOCTLCMD || ret == -ENODEV)
1194                 ret = 0;
1195         if (ret < 0) {
1196                 vpif_dbg(2, debug, "Error setting custom DV timings\n");
1197                 return ret;
1198         }
1199 
1200         if (!(timings->bt.width && timings->bt.height &&
1201                                 (timings->bt.hbackporch ||
1202                                  timings->bt.hfrontporch ||
1203                                  timings->bt.hsync) &&
1204                                 timings->bt.vfrontporch &&
1205                                 (timings->bt.vbackporch ||
1206                                  timings->bt.vsync))) {
1207                 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");
1208                 return -EINVAL;
1209         }
1210 
1211         vid_ch->dv_timings = *timings;
1212 
1213         /* Configure video port timings */
1214 
1215         std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
1216         std_info->sav2eav = bt->width;
1217 
1218         std_info->l1 = 1;
1219         std_info->l3 = bt->vsync + bt->vbackporch + 1;
1220 
1221         std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
1222         if (bt->interlaced) {
1223                 if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1224                         std_info->l5 = std_info->vsize/2 -
1225                                 (bt->vfrontporch - 1);
1226                         std_info->l7 = std_info->vsize/2 + 1;
1227                         std_info->l9 = std_info->l7 + bt->il_vsync +
1228                                 bt->il_vbackporch + 1;
1229                         std_info->l11 = std_info->vsize -
1230                                 (bt->il_vfrontporch - 1);
1231                 } else {
1232                         vpif_dbg(2, debug, "Required timing values for interlaced BT format missing\n");
1233                         return -EINVAL;
1234                 }
1235         } else {
1236                 std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1237         }
1238         strscpy(std_info->name, "Custom timings BT656/1120",
1239                 sizeof(std_info->name));
1240         std_info->width = bt->width;
1241         std_info->height = bt->height;
1242         std_info->frm_fmt = bt->interlaced ? 0 : 1;
1243         std_info->ycmux_mode = 0;
1244         std_info->capture_format = 0;
1245         std_info->vbi_supported = 0;
1246         std_info->hd_sd = 1;
1247         std_info->stdid = 0;
1248 
1249         vid_ch->stdid = 0;
1250         return 0;
1251 }
1252 
1253 /**
1254  * vpif_g_dv_timings() - G_DV_TIMINGS handler
1255  * @file: file ptr
1256  * @priv: file handle
1257  * @timings: digital video timings
1258  */
1259 static int vpif_g_dv_timings(struct file *file, void *priv,
1260                 struct v4l2_dv_timings *timings)
1261 {
1262         struct vpif_capture_config *config = vpif_dev->platform_data;
1263         struct video_device *vdev = video_devdata(file);
1264         struct channel_obj *ch = video_get_drvdata(vdev);
1265         struct video_obj *vid_ch = &ch->video;
1266         struct vpif_capture_chan_config *chan_cfg;
1267         struct v4l2_input input;
1268 
1269         if (!config->chan_config[ch->channel_id].inputs)
1270                 return -ENODATA;
1271 
1272         chan_cfg = &config->chan_config[ch->channel_id];
1273         input = chan_cfg->inputs[ch->input_idx].input;
1274         if (input.capabilities != V4L2_IN_CAP_DV_TIMINGS)
1275                 return -ENODATA;
1276 
1277         *timings = vid_ch->dv_timings;
1278 
1279         return 0;
1280 }
1281 
1282 /*
1283  * vpif_log_status() - Status information
1284  * @file: file ptr
1285  * @priv: file handle
1286  *
1287  * Returns zero.
1288  */
1289 static int vpif_log_status(struct file *filep, void *priv)
1290 {
1291         /* status for sub devices */
1292         v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1293 
1294         return 0;
1295 }
1296 
1297 /* vpif capture ioctl operations */
1298 static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1299         .vidioc_querycap                = vpif_querycap,
1300         .vidioc_enum_fmt_vid_cap        = vpif_enum_fmt_vid_cap,
1301         .vidioc_g_fmt_vid_cap           = vpif_g_fmt_vid_cap,
1302         .vidioc_s_fmt_vid_cap           = vpif_s_fmt_vid_cap,
1303         .vidioc_try_fmt_vid_cap         = vpif_try_fmt_vid_cap,
1304 
1305         .vidioc_enum_input              = vpif_enum_input,
1306         .vidioc_s_input                 = vpif_s_input,
1307         .vidioc_g_input                 = vpif_g_input,
1308 
1309         .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
1310         .vidioc_create_bufs             = vb2_ioctl_create_bufs,
1311         .vidioc_querybuf                = vb2_ioctl_querybuf,
1312         .vidioc_qbuf                    = vb2_ioctl_qbuf,
1313         .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
1314         .vidioc_expbuf                  = vb2_ioctl_expbuf,
1315         .vidioc_streamon                = vb2_ioctl_streamon,
1316         .vidioc_streamoff               = vb2_ioctl_streamoff,
1317 
1318         .vidioc_querystd                = vpif_querystd,
1319         .vidioc_s_std                   = vpif_s_std,
1320         .vidioc_g_std                   = vpif_g_std,
1321 
1322         .vidioc_enum_dv_timings         = vpif_enum_dv_timings,
1323         .vidioc_query_dv_timings        = vpif_query_dv_timings,
1324         .vidioc_s_dv_timings            = vpif_s_dv_timings,
1325         .vidioc_g_dv_timings            = vpif_g_dv_timings,
1326 
1327         .vidioc_log_status              = vpif_log_status,
1328 };
1329 
1330 /* vpif file operations */
1331 static const struct v4l2_file_operations vpif_fops = {
1332         .owner = THIS_MODULE,
1333         .open = v4l2_fh_open,
1334         .release = vb2_fop_release,
1335         .unlocked_ioctl = video_ioctl2,
1336         .mmap = vb2_fop_mmap,
1337         .poll = vb2_fop_poll
1338 };
1339 
1340 /**
1341  * initialize_vpif() - Initialize vpif data structures
1342  *
1343  * Allocate memory for data structures and initialize them
1344  */
1345 static int initialize_vpif(void)
1346 {
1347         int err, i, j;
1348         int free_channel_objects_index;
1349 
1350         /* Allocate memory for six channel objects */
1351         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1352                 vpif_obj.dev[i] =
1353                     kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1354                 /* If memory allocation fails, return error */
1355                 if (!vpif_obj.dev[i]) {
1356                         free_channel_objects_index = i;
1357                         err = -ENOMEM;
1358                         goto vpif_init_free_channel_objects;
1359                 }
1360         }
1361         return 0;
1362 
1363 vpif_init_free_channel_objects:
1364         for (j = 0; j < free_channel_objects_index; j++)
1365                 kfree(vpif_obj.dev[j]);
1366         return err;
1367 }
1368 
1369 static inline void free_vpif_objs(void)
1370 {
1371         int i;
1372 
1373         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
1374                 kfree(vpif_obj.dev[i]);
1375 }
1376 
1377 static int vpif_async_bound(struct v4l2_async_notifier *notifier,
1378                             struct v4l2_subdev *subdev,
1379                             struct v4l2_async_subdev *asd)
1380 {
1381         int i;
1382 
1383         for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) {
1384                 struct v4l2_async_subdev *_asd = vpif_obj.config->asd[i];
1385                 const struct fwnode_handle *fwnode = _asd->match.fwnode;
1386 
1387                 if (fwnode == subdev->fwnode) {
1388                         vpif_obj.sd[i] = subdev;
1389                         vpif_obj.config->chan_config->inputs[i].subdev_name =
1390                                 (char *)to_of_node(subdev->fwnode)->full_name;
1391                         vpif_dbg(2, debug,
1392                                  "%s: setting input %d subdev_name = %s\n",
1393                                  __func__, i,
1394                                 vpif_obj.config->chan_config->inputs[i].subdev_name);
1395                         return 0;
1396                 }
1397         }
1398 
1399         for (i = 0; i < vpif_obj.config->subdev_count; i++)
1400                 if (!strcmp(vpif_obj.config->subdev_info[i].name,
1401                             subdev->name)) {
1402                         vpif_obj.sd[i] = subdev;
1403                         return 0;
1404                 }
1405 
1406         return -EINVAL;
1407 }
1408 
1409 static int vpif_probe_complete(void)
1410 {
1411         struct common_obj *common;
1412         struct video_device *vdev;
1413         struct channel_obj *ch;
1414         struct vb2_queue *q;
1415         int j, err, k;
1416 
1417         for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
1418                 ch = vpif_obj.dev[j];
1419                 ch->channel_id = j;
1420                 common = &(ch->common[VPIF_VIDEO_INDEX]);
1421                 spin_lock_init(&common->irqlock);
1422                 mutex_init(&common->lock);
1423 
1424                 /* select input 0 */
1425                 err = vpif_set_input(vpif_obj.config, ch, 0);
1426                 if (err)
1427                         goto probe_out;
1428 
1429                 /* set initial format */
1430                 ch->video.stdid = V4L2_STD_525_60;
1431                 memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
1432                 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1433                 vpif_update_std_info(ch);
1434 
1435                 /* Initialize vb2 queue */
1436                 q = &common->buffer_queue;
1437                 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1438                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1439                 q->drv_priv = ch;
1440                 q->ops = &video_qops;
1441                 q->mem_ops = &vb2_dma_contig_memops;
1442                 q->buf_struct_size = sizeof(struct vpif_cap_buffer);
1443                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1444                 q->min_buffers_needed = 1;
1445                 q->lock = &common->lock;
1446                 q->dev = vpif_dev;
1447 
1448                 err = vb2_queue_init(q);
1449                 if (err) {
1450                         vpif_err("vpif_capture: vb2_queue_init() failed\n");
1451                         goto probe_out;
1452                 }
1453 
1454                 INIT_LIST_HEAD(&common->dma_queue);
1455 
1456                 /* Initialize the video_device structure */
1457                 vdev = &ch->video_dev;
1458                 strscpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
1459                 vdev->release = video_device_release_empty;
1460                 vdev->fops = &vpif_fops;
1461                 vdev->ioctl_ops = &vpif_ioctl_ops;
1462                 vdev->v4l2_dev = &vpif_obj.v4l2_dev;
1463                 vdev->vfl_dir = VFL_DIR_RX;
1464                 vdev->queue = q;
1465                 vdev->lock = &common->lock;
1466                 vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1467                 video_set_drvdata(&ch->video_dev, ch);
1468                 err = video_register_device(vdev,
1469                                             VFL_TYPE_GRABBER, (j ? 1 : 0));
1470                 if (err)
1471                         goto probe_out;
1472         }
1473 
1474         v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
1475         return 0;
1476 
1477 probe_out:
1478         for (k = 0; k < j; k++) {
1479                 /* Get the pointer to the channel object */
1480                 ch = vpif_obj.dev[k];
1481                 common = &ch->common[k];
1482                 /* Unregister video device */
1483                 video_unregister_device(&ch->video_dev);
1484         }
1485         kfree(vpif_obj.sd);
1486         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1487 
1488         return err;
1489 }
1490 
1491 static int vpif_async_complete(struct v4l2_async_notifier *notifier)
1492 {
1493         return vpif_probe_complete();
1494 }
1495 
1496 static const struct v4l2_async_notifier_operations vpif_async_ops = {
1497         .bound = vpif_async_bound,
1498         .complete = vpif_async_complete,
1499 };
1500 
1501 static struct vpif_capture_config *
1502 vpif_capture_get_pdata(struct platform_device *pdev)
1503 {
1504         struct device_node *endpoint = NULL;
1505         struct device_node *rem = NULL;
1506         struct vpif_capture_config *pdata;
1507         struct vpif_subdev_info *sdinfo;
1508         struct vpif_capture_chan_config *chan;
1509         unsigned int i;
1510 
1511         v4l2_async_notifier_init(&vpif_obj.notifier);
1512 
1513         /*
1514          * DT boot: OF node from parent device contains
1515          * video ports & endpoints data.
1516          */
1517         if (pdev->dev.parent && pdev->dev.parent->of_node)
1518                 pdev->dev.of_node = pdev->dev.parent->of_node;
1519         if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
1520                 return pdev->dev.platform_data;
1521 
1522         pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1523         if (!pdata)
1524                 return NULL;
1525         pdata->subdev_info =
1526                 devm_kcalloc(&pdev->dev,
1527                              VPIF_CAPTURE_NUM_CHANNELS,
1528                              sizeof(*pdata->subdev_info),
1529                              GFP_KERNEL);
1530 
1531         if (!pdata->subdev_info)
1532                 return NULL;
1533 
1534         for (i = 0; i < VPIF_CAPTURE_NUM_CHANNELS; i++) {
1535                 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
1536                 unsigned int flags;
1537                 int err;
1538 
1539                 endpoint = of_graph_get_next_endpoint(pdev->dev.of_node,
1540                                                       endpoint);
1541                 if (!endpoint)
1542                         break;
1543 
1544                 rem = of_graph_get_remote_port_parent(endpoint);
1545                 if (!rem) {
1546                         dev_dbg(&pdev->dev, "Remote device at %pOF not found\n",
1547                                 endpoint);
1548                         goto done;
1549                 }
1550 
1551                 sdinfo = &pdata->subdev_info[i];
1552                 chan = &pdata->chan_config[i];
1553                 chan->inputs = devm_kcalloc(&pdev->dev,
1554                                             VPIF_CAPTURE_NUM_CHANNELS,
1555                                             sizeof(*chan->inputs),
1556                                             GFP_KERNEL);
1557                 if (!chan->inputs)
1558                         goto err_cleanup;
1559 
1560                 chan->input_count++;
1561                 chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA;
1562                 chan->inputs[i].input.std = V4L2_STD_ALL;
1563                 chan->inputs[i].input.capabilities = V4L2_IN_CAP_STD;
1564 
1565                 err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
1566                                                  &bus_cfg);
1567                 if (err) {
1568                         dev_err(&pdev->dev, "Could not parse the endpoint\n");
1569                         of_node_put(rem);
1570                         goto done;
1571                 }
1572 
1573                 dev_dbg(&pdev->dev, "Endpoint %pOF, bus_width = %d\n",
1574                         endpoint, bus_cfg.bus.parallel.bus_width);
1575 
1576                 flags = bus_cfg.bus.parallel.flags;
1577 
1578                 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
1579                         chan->vpif_if.hd_pol = 1;
1580 
1581                 if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
1582                         chan->vpif_if.vd_pol = 1;
1583 
1584                 dev_dbg(&pdev->dev, "Remote device %pOF found\n", rem);
1585                 sdinfo->name = rem->full_name;
1586 
1587                 pdata->asd[i] = v4l2_async_notifier_add_fwnode_subdev(
1588                         &vpif_obj.notifier, of_fwnode_handle(rem),
1589                         sizeof(struct v4l2_async_subdev));
1590                 if (IS_ERR(pdata->asd[i]))
1591                         goto err_cleanup;
1592 
1593                 of_node_put(rem);
1594         }
1595 
1596 done:
1597         of_node_put(endpoint);
1598         pdata->asd_sizes[0] = i;
1599         pdata->subdev_count = i;
1600         pdata->card_name = "DA850/OMAP-L138 Video Capture";
1601 
1602         return pdata;
1603 
1604 err_cleanup:
1605         of_node_put(rem);
1606         of_node_put(endpoint);
1607         v4l2_async_notifier_cleanup(&vpif_obj.notifier);
1608 
1609         return NULL;
1610 }
1611 
1612 /**
1613  * vpif_probe : This function probes the vpif capture driver
1614  * @pdev: platform device pointer
1615  *
1616  * This creates device entries by register itself to the V4L2 driver and
1617  * initializes fields of each channel objects
1618  */
1619 static __init int vpif_probe(struct platform_device *pdev)
1620 {
1621         struct vpif_subdev_info *subdevdata;
1622         struct i2c_adapter *i2c_adap;
1623         struct resource *res;
1624         int subdev_count;
1625         int res_idx = 0;
1626         int i, err;
1627 
1628         pdev->dev.platform_data = vpif_capture_get_pdata(pdev);
1629         if (!pdev->dev.platform_data) {
1630                 dev_warn(&pdev->dev, "Missing platform data.  Giving up.\n");
1631                 return -EINVAL;
1632         }
1633 
1634         vpif_dev = &pdev->dev;
1635 
1636         err = initialize_vpif();
1637         if (err) {
1638                 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1639                 goto cleanup;
1640         }
1641 
1642         err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1643         if (err) {
1644                 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1645                 goto vpif_free;
1646         }
1647 
1648         while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
1649                 err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
1650                                         IRQF_SHARED, VPIF_DRIVER_NAME,
1651                                         (void *)(&vpif_obj.dev[res_idx]->
1652                                         channel_id));
1653                 if (err) {
1654                         err = -EINVAL;
1655                         goto vpif_unregister;
1656                 }
1657                 res_idx++;
1658         }
1659 
1660         vpif_obj.config = pdev->dev.platform_data;
1661 
1662         subdev_count = vpif_obj.config->subdev_count;
1663         vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL);
1664         if (!vpif_obj.sd) {
1665                 err = -ENOMEM;
1666                 goto vpif_unregister;
1667         }
1668 
1669         if (!vpif_obj.config->asd_sizes[0]) {
1670                 int i2c_id = vpif_obj.config->i2c_adapter_id;
1671 
1672                 i2c_adap = i2c_get_adapter(i2c_id);
1673                 WARN_ON(!i2c_adap);
1674                 for (i = 0; i < subdev_count; i++) {
1675                         subdevdata = &vpif_obj.config->subdev_info[i];
1676                         vpif_obj.sd[i] =
1677                                 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1678                                                           i2c_adap,
1679                                                           &subdevdata->
1680                                                           board_info,
1681                                                           NULL);
1682 
1683                         if (!vpif_obj.sd[i]) {
1684                                 vpif_err("Error registering v4l2 subdevice\n");
1685                                 err = -ENODEV;
1686                                 goto probe_subdev_out;
1687                         }
1688                         v4l2_info(&vpif_obj.v4l2_dev,
1689                                   "registered sub device %s\n",
1690                                    subdevdata->name);
1691                 }
1692                 err = vpif_probe_complete();
1693                 if (err)
1694                         goto probe_subdev_out;
1695         } else {
1696                 vpif_obj.notifier.ops = &vpif_async_ops;
1697                 err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
1698                                                    &vpif_obj.notifier);
1699                 if (err) {
1700                         vpif_err("Error registering async notifier\n");
1701                         err = -EINVAL;
1702                         goto probe_subdev_out;
1703                 }
1704         }
1705 
1706         return 0;
1707 
1708 probe_subdev_out:
1709         /* free sub devices memory */
1710         kfree(vpif_obj.sd);
1711 vpif_unregister:
1712         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1713 vpif_free:
1714         free_vpif_objs();
1715 cleanup:
1716         v4l2_async_notifier_cleanup(&vpif_obj.notifier);
1717 
1718         return err;
1719 }
1720 
1721 /**
1722  * vpif_remove() - driver remove handler
1723  * @device: ptr to platform device structure
1724  *
1725  * The vidoe device is unregistered
1726  */
1727 static int vpif_remove(struct platform_device *device)
1728 {
1729         struct channel_obj *ch;
1730         int i;
1731 
1732         v4l2_async_notifier_unregister(&vpif_obj.notifier);
1733         v4l2_async_notifier_cleanup(&vpif_obj.notifier);
1734         v4l2_device_unregister(&vpif_obj.v4l2_dev);
1735 
1736         kfree(vpif_obj.sd);
1737         /* un-register device */
1738         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1739                 /* Get the pointer to the channel object */
1740                 ch = vpif_obj.dev[i];
1741                 /* Unregister video device */
1742                 video_unregister_device(&ch->video_dev);
1743                 kfree(vpif_obj.dev[i]);
1744         }
1745         return 0;
1746 }
1747 
1748 #ifdef CONFIG_PM_SLEEP
1749 /**
1750  * vpif_suspend: vpif device suspend
1751  * @dev: pointer to &struct device
1752  */
1753 static int vpif_suspend(struct device *dev)
1754 {
1755 
1756         struct common_obj *common;
1757         struct channel_obj *ch;
1758         int i;
1759 
1760         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1761                 /* Get the pointer to the channel object */
1762                 ch = vpif_obj.dev[i];
1763                 common = &ch->common[VPIF_VIDEO_INDEX];
1764 
1765                 if (!vb2_start_streaming_called(&common->buffer_queue))
1766                         continue;
1767 
1768                 mutex_lock(&common->lock);
1769                 /* Disable channel */
1770                 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1771                         enable_channel0(0);
1772                         channel0_intr_enable(0);
1773                 }
1774                 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1775                         ycmux_mode == 2) {
1776                         enable_channel1(0);
1777                         channel1_intr_enable(0);
1778                 }
1779                 mutex_unlock(&common->lock);
1780         }
1781 
1782         return 0;
1783 }
1784 
1785 /*
1786  * vpif_resume: vpif device suspend
1787  */
1788 static int vpif_resume(struct device *dev)
1789 {
1790         struct common_obj *common;
1791         struct channel_obj *ch;
1792         int i;
1793 
1794         for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1795                 /* Get the pointer to the channel object */
1796                 ch = vpif_obj.dev[i];
1797                 common = &ch->common[VPIF_VIDEO_INDEX];
1798 
1799                 if (!vb2_start_streaming_called(&common->buffer_queue))
1800                         continue;
1801 
1802                 mutex_lock(&common->lock);
1803                 /* Enable channel */
1804                 if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {
1805                         enable_channel0(1);
1806                         channel0_intr_enable(1);
1807                 }
1808                 if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
1809                         ycmux_mode == 2) {
1810                         enable_channel1(1);
1811                         channel1_intr_enable(1);
1812                 }
1813                 mutex_unlock(&common->lock);
1814         }
1815 
1816         return 0;
1817 }
1818 #endif
1819 
1820 static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume);
1821 
1822 static __refdata struct platform_driver vpif_driver = {
1823         .driver = {
1824                 .name   = VPIF_DRIVER_NAME,
1825                 .pm     = &vpif_pm_ops,
1826         },
1827         .probe = vpif_probe,
1828         .remove = vpif_remove,
1829 };
1830 
1831 module_platform_driver(vpif_driver);
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root/drivers/media/platform/davinci/vpif_capture.c

DEFINITIONS
