drivers/media/pci/cx25821/cx25821-video.c

   1 /*
   2  *  Driver for the Conexant CX25821 PCIe bridge
   3  *
   4  *  Copyright (C) 2009 Conexant Systems Inc.
   5  *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
   6  *  Based on Steven Toth <stoth@linuxtv.org> cx25821 driver
   7  *  Parts adapted/taken from Eduardo Moscoso Rubino
   8  *  Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com>
   9  *
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the Free Software
  24  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  28
  29 #include "cx25821-video.h"
  30
  31 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
  32 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
  33 MODULE_LICENSE("GPL");
  34
  35 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
  36
  37 module_param_array(video_nr, int, NULL, 0444);
  38
  39 MODULE_PARM_DESC(video_nr, "video device numbers");
  40
  41 static unsigned int video_debug = VIDEO_DEBUG;
  42 module_param(video_debug, int, 0644);
  43 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  44
  45 static unsigned int irq_debug;
  46 module_param(irq_debug, int, 0644);
  47 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
  48
  49 #define FORMAT_FLAGS_PACKED       0x01
  50
  51 static const struct cx25821_fmt formats[] = {
  52         {
  53                 .name = "4:1:1, packed, Y41P",
  54                 .fourcc = V4L2_PIX_FMT_Y41P,
  55                 .depth = 12,
  56                 .flags = FORMAT_FLAGS_PACKED,
  57         }, {
  58                 .name = "4:2:2, packed, YUYV",
  59                 .fourcc = V4L2_PIX_FMT_YUYV,
  60                 .depth = 16,
  61                 .flags = FORMAT_FLAGS_PACKED,
  62         },
  63 };
  64
  65 static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
  66 {
  67         unsigned int i;
  68
  69         for (i = 0; i < ARRAY_SIZE(formats); i++)
  70                 if (formats[i].fourcc == fourcc)
  71                         return formats + i;
  72         return NULL;
  73 }
  74
  75 int cx25821_start_video_dma(struct cx25821_dev *dev,
  76                             struct cx25821_dmaqueue *q,
  77                             struct cx25821_buffer *buf,
  78                             const struct sram_channel *channel)
  79 {
  80         int tmp = 0;
  81
  82         /* setup fifo + format */
  83         cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma);
  84
  85         /* reset counter */
  86         cx_write(channel->gpcnt_ctl, 3);
  87
  88         /* enable irq */
  89         cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
  90         cx_set(channel->int_msk, 0x11);
  91
  92         /* start dma */
  93         cx_write(channel->dma_ctl, 0x11);       /* FIFO and RISC enable */
  94
  95         /* make sure upstream setting if any is reversed */
  96         tmp = cx_read(VID_CH_MODE_SEL);
  97         cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
  98
  99         return 0;
 100 }
 101
 102 int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
 103 {
 104         int handled = 0;
 105         u32 mask;
 106         const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
 107
 108         mask = cx_read(channel->int_msk);
 109         if (0 == (status & mask))
 110                 return handled;
 111
 112         cx_write(channel->int_stat, status);
 113
 114         /* risc op code error */
 115         if (status & (1 << 16)) {
 116                 pr_warn("%s, %s: video risc op code error\n",
 117                         dev->name, channel->name);
 118                 cx_clear(channel->dma_ctl, 0x11);
 119                 cx25821_sram_channel_dump(dev, channel);
 120         }
 121
 122         /* risc1 y */
 123         if (status & FLD_VID_DST_RISC1) {
 124                 struct cx25821_dmaqueue *dmaq =
 125                         &dev->channels[channel->i].dma_vidq;
 126                 struct cx25821_buffer *buf;
 127
 128                 spin_lock(&dev->slock);
 129                 if (!list_empty(&dmaq->active)) {
 130                         buf = list_entry(dmaq->active.next,
 131                                          struct cx25821_buffer, queue);
 132
 133                         v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
 134                         buf->vb.v4l2_buf.sequence = dmaq->count++;
 135                         list_del(&buf->queue);
 136                         vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
 137                 }
 138                 spin_unlock(&dev->slock);
 139                 handled++;
 140         }
 141         return handled;
 142 }
 143
 144 static int cx25821_queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
 145                            unsigned int *num_buffers, unsigned int *num_planes,
 146                            unsigned int sizes[], void *alloc_ctxs[])
 147 {
 148         struct cx25821_channel *chan = q->drv_priv;
 149         unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3;
 150
 151         if (fmt && fmt->fmt.pix.sizeimage < size)
 152                 return -EINVAL;
 153
 154         *num_planes = 1;
 155         sizes[0] = fmt ? fmt->fmt.pix.sizeimage : size;
 156         alloc_ctxs[0] = chan->dev->alloc_ctx;
 157         return 0;
 158 }
 159
 160 static int cx25821_buffer_prepare(struct vb2_buffer *vb)
 161 {
 162         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 163         struct cx25821_dev *dev = chan->dev;
 164         struct cx25821_buffer *buf =
 165                 container_of(vb, struct cx25821_buffer, vb);
 166         struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
 167         u32 line0_offset;
 168         int bpl_local = LINE_SIZE_D1;
 169         int ret;
 170
 171         if (chan->pixel_formats == PIXEL_FRMT_411)
 172                 buf->bpl = (chan->fmt->depth * chan->width) >> 3;
 173         else
 174                 buf->bpl = (chan->fmt->depth >> 3) * chan->width;
 175
 176         if (vb2_plane_size(vb, 0) < chan->height * buf->bpl)
 177                 return -EINVAL;
 178         vb2_set_plane_payload(vb, 0, chan->height * buf->bpl);
 179         buf->vb.v4l2_buf.field = chan->field;
 180
 181         if (chan->pixel_formats == PIXEL_FRMT_411) {
 182                 bpl_local = buf->bpl;
 183         } else {
 184                 bpl_local = buf->bpl;   /* Default */
 185
 186                 if (chan->use_cif_resolution) {
 187                         if (dev->tvnorm & V4L2_STD_625_50)
 188                                 bpl_local = 352 << 1;
 189                         else
 190                                 bpl_local = chan->cif_width << 1;
 191                 }
 192         }
 193
 194         switch (chan->field) {
 195         case V4L2_FIELD_TOP:
 196                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 197                                 sgt->sgl, 0, UNSET,
 198                                 buf->bpl, 0, chan->height);
 199                 break;
 200         case V4L2_FIELD_BOTTOM:
 201                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 202                                 sgt->sgl, UNSET, 0,
 203                                 buf->bpl, 0, chan->height);
 204                 break;
 205         case V4L2_FIELD_INTERLACED:
 206                 /* All other formats are top field first */
 207                 line0_offset = 0;
 208                 dprintk(1, "top field first\n");
 209
 210                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 211                                 sgt->sgl, line0_offset,
 212                                 bpl_local, bpl_local, bpl_local,
 213                                 chan->height >> 1);
 214                 break;
 215         case V4L2_FIELD_SEQ_TB:
 216                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 217                                 sgt->sgl,
 218                                 0, buf->bpl * (chan->height >> 1),
 219                                 buf->bpl, 0, chan->height >> 1);
 220                 break;
 221         case V4L2_FIELD_SEQ_BT:
 222                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 223                                 sgt->sgl,
 224                                 buf->bpl * (chan->height >> 1), 0,
 225                                 buf->bpl, 0, chan->height >> 1);
 226                 break;
 227         default:
 228                 WARN_ON(1);
 229                 ret = -EINVAL;
 230                 break;
 231         }
 232
 233         dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
 234                 buf, buf->vb.v4l2_buf.index, chan->width, chan->height,
 235                 chan->fmt->depth, chan->fmt->name,
 236                 (unsigned long)buf->risc.dma);
 237
 238         return ret;
 239 }
 240
 241 static void cx25821_buffer_finish(struct vb2_buffer *vb)
 242 {
 243         struct cx25821_buffer *buf =
 244                 container_of(vb, struct cx25821_buffer, vb);
 245         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 246         struct cx25821_dev *dev = chan->dev;
 247
 248         cx25821_free_buffer(dev, buf);
 249 }
 250
 251 static void cx25821_buffer_queue(struct vb2_buffer *vb)
 252 {
 253         struct cx25821_buffer *buf =
 254                 container_of(vb, struct cx25821_buffer, vb);
 255         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 256         struct cx25821_dev *dev = chan->dev;
 257         struct cx25821_buffer *prev;
 258         struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
 259
 260         buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12);
 261         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
 262         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12);
 263         buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
 264
 265         if (list_empty(&q->active)) {
 266                 list_add_tail(&buf->queue, &q->active);
 267         } else {
 268                 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
 269                 prev = list_entry(q->active.prev, struct cx25821_buffer,
 270                                 queue);
 271                 list_add_tail(&buf->queue, &q->active);
 272                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 273         }
 274 }
 275
 276 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count)
 277 {
 278         struct cx25821_channel *chan = q->drv_priv;
 279         struct cx25821_dev *dev = chan->dev;
 280         struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
 281         struct cx25821_buffer *buf = list_entry(dmaq->active.next,
 282                         struct cx25821_buffer, queue);
 283
 284         dmaq->count = 0;
 285         cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels);
 286         return 0;
 287 }
 288
 289 static void cx25821_stop_streaming(struct vb2_queue *q)
 290 {
 291         struct cx25821_channel *chan = q->drv_priv;
 292         struct cx25821_dev *dev = chan->dev;
 293         struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
 294         unsigned long flags;
 295
 296         cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */
 297         spin_lock_irqsave(&dev->slock, flags);
 298         while (!list_empty(&dmaq->active)) {
 299                 struct cx25821_buffer *buf = list_entry(dmaq->active.next,
 300                         struct cx25821_buffer, queue);
 301
 302                 list_del(&buf->queue);
 303                 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
 304         }
 305         spin_unlock_irqrestore(&dev->slock, flags);
 306 }
 307
 308 static struct vb2_ops cx25821_video_qops = {
 309         .queue_setup    = cx25821_queue_setup,
 310         .buf_prepare  = cx25821_buffer_prepare,
 311         .buf_finish = cx25821_buffer_finish,
 312         .buf_queue    = cx25821_buffer_queue,
 313         .wait_prepare = vb2_ops_wait_prepare,
 314         .wait_finish = vb2_ops_wait_finish,
 315         .start_streaming = cx25821_start_streaming,
 316         .stop_streaming = cx25821_stop_streaming,
 317 };
 318
 319 /* VIDEO IOCTLS */
 320
 321 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 322                             struct v4l2_fmtdesc *f)
 323 {
 324         if (unlikely(f->index >= ARRAY_SIZE(formats)))
 325                 return -EINVAL;
 326
 327         strlcpy(f->description, formats[f->index].name, sizeof(f->description));
 328         f->pixelformat = formats[f->index].fourcc;
 329
 330         return 0;
 331 }
 332
 333 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 334                                  struct v4l2_format *f)
 335 {
 336         struct cx25821_channel *chan = video_drvdata(file);
 337
 338         f->fmt.pix.width = chan->width;
 339         f->fmt.pix.height = chan->height;
 340         f->fmt.pix.field = chan->field;
 341         f->fmt.pix.pixelformat = chan->fmt->fourcc;
 342         f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
 343         f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
 344         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 345
 346         return 0;
 347 }
 348
 349 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 350                                    struct v4l2_format *f)
 351 {
 352         struct cx25821_channel *chan = video_drvdata(file);
 353         struct cx25821_dev *dev = chan->dev;
 354         const struct cx25821_fmt *fmt;
 355         enum v4l2_field field = f->fmt.pix.field;
 356         unsigned int maxh;
 357         unsigned w;
 358
 359         fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 360         if (NULL == fmt)
 361                 return -EINVAL;
 362         maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 363
 364         w = f->fmt.pix.width;
 365         if (field != V4L2_FIELD_BOTTOM)
 366                 field = V4L2_FIELD_TOP;
 367         if (w < 352) {
 368                 w = 176;
 369                 f->fmt.pix.height = maxh / 4;
 370         } else if (w < 720) {
 371                 w = 352;
 372                 f->fmt.pix.height = maxh / 2;
 373         } else {
 374                 w = 720;
 375                 f->fmt.pix.height = maxh;
 376                 field = V4L2_FIELD_INTERLACED;
 377         }
 378         f->fmt.pix.field = field;
 379         f->fmt.pix.width = w;
 380         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 381         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 382         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 383
 384         return 0;
 385 }
 386
 387 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 388                                 struct v4l2_format *f)
 389 {
 390         struct cx25821_channel *chan = video_drvdata(file);
 391         struct cx25821_dev *dev = chan->dev;
 392         int pix_format = PIXEL_FRMT_422;
 393         int err;
 394
 395         err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
 396
 397         if (0 != err)
 398                 return err;
 399
 400         chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 401         chan->field = f->fmt.pix.field;
 402         chan->width = f->fmt.pix.width;
 403         chan->height = f->fmt.pix.height;
 404
 405         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
 406                 pix_format = PIXEL_FRMT_411;
 407         else
 408                 pix_format = PIXEL_FRMT_422;
 409
 410         cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
 411
 412         /* check if cif resolution */
 413         if (chan->width == 320 || chan->width == 352)
 414                 chan->use_cif_resolution = 1;
 415         else
 416                 chan->use_cif_resolution = 0;
 417
 418         chan->cif_width = chan->width;
 419         medusa_set_resolution(dev, chan->width, SRAM_CH00);
 420         return 0;
 421 }
 422
 423 static int vidioc_log_status(struct file *file, void *priv)
 424 {
 425         struct cx25821_channel *chan = video_drvdata(file);
 426         struct cx25821_dev *dev = chan->dev;
 427         const struct sram_channel *sram_ch = chan->sram_channels;
 428         u32 tmp = 0;
 429
 430         tmp = cx_read(sram_ch->dma_ctl);
 431         pr_info("Video input 0 is %s\n",
 432                 (tmp & 0x11) ? "streaming" : "stopped");
 433         return 0;
 434 }
 435
 436
 437 static int cx25821_vidioc_querycap(struct file *file, void *priv,
 438                             struct v4l2_capability *cap)
 439 {
 440         struct cx25821_channel *chan = video_drvdata(file);
 441         struct cx25821_dev *dev = chan->dev;
 442         const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
 443                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
 444         const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE;
 445
 446         strcpy(cap->driver, "cx25821");
 447         strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
 448         sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
 449         if (chan->id >= VID_CHANNEL_NUM)
 450                 cap->device_caps = cap_output;
 451         else
 452                 cap->device_caps = cap_input;
 453         cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS;
 454         return 0;
 455 }
 456
 457 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
 458 {
 459         struct cx25821_channel *chan = video_drvdata(file);
 460
 461         *tvnorms = chan->dev->tvnorm;
 462         return 0;
 463 }
 464
 465 static int cx25821_vidioc_s_std(struct file *file, void *priv,
 466                                 v4l2_std_id tvnorms)
 467 {
 468         struct cx25821_channel *chan = video_drvdata(file);
 469         struct cx25821_dev *dev = chan->dev;
 470
 471         if (dev->tvnorm == tvnorms)
 472                 return 0;
 473
 474         dev->tvnorm = tvnorms;
 475         chan->width = 720;
 476         chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 477
 478         medusa_set_videostandard(dev);
 479
 480         return 0;
 481 }
 482
 483 static int cx25821_vidioc_enum_input(struct file *file, void *priv,
 484                               struct v4l2_input *i)
 485 {
 486         if (i->index)
 487                 return -EINVAL;
 488
 489         i->type = V4L2_INPUT_TYPE_CAMERA;
 490         i->std = CX25821_NORMS;
 491         strcpy(i->name, "Composite");
 492         return 0;
 493 }
 494
 495 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 496 {
 497         *i = 0;
 498         return 0;
 499 }
 500
 501 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
 502 {
 503         return i ? -EINVAL : 0;
 504 }
 505
 506 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
 507 {
 508         struct cx25821_channel *chan =
 509                 container_of(ctrl->handler, struct cx25821_channel, hdl);
 510         struct cx25821_dev *dev = chan->dev;
 511
 512         switch (ctrl->id) {
 513         case V4L2_CID_BRIGHTNESS:
 514                 medusa_set_brightness(dev, ctrl->val, chan->id);
 515                 break;
 516         case V4L2_CID_HUE:
 517                 medusa_set_hue(dev, ctrl->val, chan->id);
 518                 break;
 519         case V4L2_CID_CONTRAST:
 520                 medusa_set_contrast(dev, ctrl->val, chan->id);
 521                 break;
 522         case V4L2_CID_SATURATION:
 523                 medusa_set_saturation(dev, ctrl->val, chan->id);
 524                 break;
 525         default:
 526                 return -EINVAL;
 527         }
 528         return 0;
 529 }
 530
 531 static int cx25821_vidioc_enum_output(struct file *file, void *priv,
 532                               struct v4l2_output *o)
 533 {
 534         if (o->index)
 535                 return -EINVAL;
 536
 537         o->type = V4L2_INPUT_TYPE_CAMERA;
 538         o->std = CX25821_NORMS;
 539         strcpy(o->name, "Composite");
 540         return 0;
 541 }
 542
 543 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
 544 {
 545         *o = 0;
 546         return 0;
 547 }
 548
 549 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
 550 {
 551         return o ? -EINVAL : 0;
 552 }
 553
 554 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
 555                                    struct v4l2_format *f)
 556 {
 557         struct cx25821_channel *chan = video_drvdata(file);
 558         struct cx25821_dev *dev = chan->dev;
 559         const struct cx25821_fmt *fmt;
 560
 561         fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 562         if (NULL == fmt)
 563                 return -EINVAL;
 564         f->fmt.pix.width = 720;
 565         f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 566         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 567         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 568         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 569         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 570         return 0;
 571 }
 572
 573 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
 574                                 struct v4l2_format *f)
 575 {
 576         struct cx25821_channel *chan = video_drvdata(file);
 577         int err;
 578
 579         err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
 580
 581         if (0 != err)
 582                 return err;
 583
 584         chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 585         chan->field = f->fmt.pix.field;
 586         chan->width = f->fmt.pix.width;
 587         chan->height = f->fmt.pix.height;
 588         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
 589                 chan->pixel_formats = PIXEL_FRMT_411;
 590         else
 591                 chan->pixel_formats = PIXEL_FRMT_422;
 592         return 0;
 593 }
 594
 595 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
 596         .s_ctrl = cx25821_s_ctrl,
 597 };
 598
 599 static const struct v4l2_file_operations video_fops = {
 600         .owner = THIS_MODULE,
 601         .open = v4l2_fh_open,
 602         .release        = vb2_fop_release,
 603         .read           = vb2_fop_read,
 604         .poll           = vb2_fop_poll,
 605         .unlocked_ioctl = video_ioctl2,
 606         .mmap           = vb2_fop_mmap,
 607 };
 608
 609 static const struct v4l2_ioctl_ops video_ioctl_ops = {
 610         .vidioc_querycap = cx25821_vidioc_querycap,
 611         .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
 612         .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
 613         .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
 614         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
 615         .vidioc_reqbufs       = vb2_ioctl_reqbufs,
 616         .vidioc_prepare_buf   = vb2_ioctl_prepare_buf,
 617         .vidioc_create_bufs   = vb2_ioctl_create_bufs,
 618         .vidioc_querybuf      = vb2_ioctl_querybuf,
 619         .vidioc_qbuf          = vb2_ioctl_qbuf,
 620         .vidioc_dqbuf         = vb2_ioctl_dqbuf,
 621         .vidioc_streamon      = vb2_ioctl_streamon,
 622         .vidioc_streamoff     = vb2_ioctl_streamoff,
 623         .vidioc_g_std = cx25821_vidioc_g_std,
 624         .vidioc_s_std = cx25821_vidioc_s_std,
 625         .vidioc_enum_input = cx25821_vidioc_enum_input,
 626         .vidioc_g_input = cx25821_vidioc_g_input,
 627         .vidioc_s_input = cx25821_vidioc_s_input,
 628         .vidioc_log_status = vidioc_log_status,
 629         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
 630         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 631 };
 632
 633 static const struct video_device cx25821_video_device = {
 634         .name = "cx25821-video",
 635         .fops = &video_fops,
 636         .release = video_device_release_empty,
 637         .minor = -1,
 638         .ioctl_ops = &video_ioctl_ops,
 639         .tvnorms = CX25821_NORMS,
 640 };
 641
 642 static const struct v4l2_file_operations video_out_fops = {
 643         .owner = THIS_MODULE,
 644         .open = v4l2_fh_open,
 645         .release        = vb2_fop_release,
 646         .write          = vb2_fop_write,
 647         .poll           = vb2_fop_poll,
 648         .unlocked_ioctl = video_ioctl2,
 649         .mmap           = vb2_fop_mmap,
 650 };
 651
 652 static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
 653         .vidioc_querycap = cx25821_vidioc_querycap,
 654         .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
 655         .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
 656         .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
 657         .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
 658         .vidioc_g_std = cx25821_vidioc_g_std,
 659         .vidioc_s_std = cx25821_vidioc_s_std,
 660         .vidioc_enum_output = cx25821_vidioc_enum_output,
 661         .vidioc_g_output = cx25821_vidioc_g_output,
 662         .vidioc_s_output = cx25821_vidioc_s_output,
 663         .vidioc_log_status = vidioc_log_status,
 664 };
 665
 666 static const struct video_device cx25821_video_out_device = {
 667         .name = "cx25821-video",
 668         .fops = &video_out_fops,
 669         .release = video_device_release_empty,
 670         .minor = -1,
 671         .ioctl_ops = &video_out_ioctl_ops,
 672         .tvnorms = CX25821_NORMS,
 673 };
 674
 675 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
 676 {
 677         cx_clear(PCI_INT_MSK, 1);
 678
 679         if (video_is_registered(&dev->channels[chan_num].vdev)) {
 680                 video_unregister_device(&dev->channels[chan_num].vdev);
 681                 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
 682         }
 683 }
 684
 685 int cx25821_video_register(struct cx25821_dev *dev)
 686 {
 687         int err;
 688         int i;
 689
 690         /* initial device configuration */
 691         dev->tvnorm = V4L2_STD_NTSC_M;
 692
 693         spin_lock_init(&dev->slock);
 694
 695         for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) {
 696                 struct cx25821_channel *chan = &dev->channels[i];
 697                 struct video_device *vdev = &chan->vdev;
 698                 struct v4l2_ctrl_handler *hdl = &chan->hdl;
 699                 struct vb2_queue *q;
 700                 bool is_output = i > SRAM_CH08;
 701
 702                 if (i == SRAM_CH08) /* audio channel */
 703                         continue;
 704
 705                 if (!is_output) {
 706                         v4l2_ctrl_handler_init(hdl, 4);
 707                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 708                                         V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
 709                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 710                                         V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
 711                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 712                                         V4L2_CID_SATURATION, 0, 10000, 1, 5000);
 713                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 714                                         V4L2_CID_HUE, 0, 10000, 1, 5000);
 715                         if (hdl->error) {
 716                                 err = hdl->error;
 717                                 goto fail_unreg;
 718                         }
 719                         err = v4l2_ctrl_handler_setup(hdl);
 720                         if (err)
 721                                 goto fail_unreg;
 722                 } else {
 723                         chan->out = &dev->vid_out_data[i - SRAM_CH09];
 724                         chan->out->chan = chan;
 725                 }
 726
 727                 chan->sram_channels = &cx25821_sram_channels[i];
 728                 chan->width = 720;
 729                 chan->field = V4L2_FIELD_INTERLACED;
 730                 if (dev->tvnorm & V4L2_STD_625_50)
 731                         chan->height = 576;
 732                 else
 733                         chan->height = 480;
 734
 735                 if (chan->pixel_formats == PIXEL_FRMT_411)
 736                         chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
 737                 else
 738                         chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
 739
 740                 cx_write(chan->sram_channels->int_stat, 0xffffffff);
 741
 742                 INIT_LIST_HEAD(&chan->dma_vidq.active);
 743
 744                 q = &chan->vidq;
 745
 746                 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
 747                                       V4L2_BUF_TYPE_VIDEO_CAPTURE;
 748                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
 749                 q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
 750                 q->gfp_flags = GFP_DMA32;
 751                 q->min_buffers_needed = 2;
 752                 q->drv_priv = chan;
 753                 q->buf_struct_size = sizeof(struct cx25821_buffer);
 754                 q->ops = &cx25821_video_qops;
 755                 q->mem_ops = &vb2_dma_sg_memops;
 756                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 757                 q->lock = &dev->lock;
 758
 759                 if (!is_output) {
 760                         err = vb2_queue_init(q);
 761                         if (err < 0)
 762                                 goto fail_unreg;
 763                 }
 764
 765                 /* register v4l devices */
 766                 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
 767                 vdev->v4l2_dev = &dev->v4l2_dev;
 768                 if (!is_output)
 769                         vdev->ctrl_handler = hdl;
 770                 else
 771                         vdev->vfl_dir = VFL_DIR_TX;
 772                 vdev->lock = &dev->lock;
 773                 vdev->queue = q;
 774                 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
 775                 video_set_drvdata(vdev, chan);
 776
 777                 err = video_register_device(vdev, VFL_TYPE_GRABBER,
 778                                             video_nr[dev->nr]);
 779
 780                 if (err < 0)
 781                         goto fail_unreg;
 782         }
 783
 784         /* set PCI interrupt */
 785         cx_set(PCI_INT_MSK, 0xff);
 786
 787         return 0;
 788
 789 fail_unreg:
 790         while (i >= 0)
 791                 cx25821_video_unregister(dev, i--);
 792         return err;
 793 }