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.timestamp);
 134                         buf->vb.sequence = dmaq->count++;
 135                         list_del(&buf->queue);
 136                         vb2_buffer_done(&buf->vb.vb2_buf, 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 void *parg,
 145                            unsigned int *num_buffers, unsigned int *num_planes,
 146                            unsigned int sizes[], void *alloc_ctxs[])
 147 {
 148         const struct v4l2_format *fmt = parg;
 149         struct cx25821_channel *chan = q->drv_priv;
 150         unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3;
 151
 152         if (fmt && fmt->fmt.pix.sizeimage < size)
 153                 return -EINVAL;
 154
 155         *num_planes = 1;
 156         sizes[0] = fmt ? fmt->fmt.pix.sizeimage : size;
 157         alloc_ctxs[0] = chan->dev->alloc_ctx;
 158         return 0;
 159 }
 160
 161 static int cx25821_buffer_prepare(struct vb2_buffer *vb)
 162 {
 163         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 164         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 165         struct cx25821_dev *dev = chan->dev;
 166         struct cx25821_buffer *buf =
 167                 container_of(vbuf, struct cx25821_buffer, vb);
 168         struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
 169         u32 line0_offset;
 170         int bpl_local = LINE_SIZE_D1;
 171         int ret;
 172
 173         if (chan->pixel_formats == PIXEL_FRMT_411)
 174                 buf->bpl = (chan->fmt->depth * chan->width) >> 3;
 175         else
 176                 buf->bpl = (chan->fmt->depth >> 3) * chan->width;
 177
 178         if (vb2_plane_size(vb, 0) < chan->height * buf->bpl)
 179                 return -EINVAL;
 180         vb2_set_plane_payload(vb, 0, chan->height * buf->bpl);
 181         buf->vb.field = chan->field;
 182
 183         if (chan->pixel_formats == PIXEL_FRMT_411) {
 184                 bpl_local = buf->bpl;
 185         } else {
 186                 bpl_local = buf->bpl;   /* Default */
 187
 188                 if (chan->use_cif_resolution) {
 189                         if (dev->tvnorm & V4L2_STD_625_50)
 190                                 bpl_local = 352 << 1;
 191                         else
 192                                 bpl_local = chan->cif_width << 1;
 193                 }
 194         }
 195
 196         switch (chan->field) {
 197         case V4L2_FIELD_TOP:
 198                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 199                                 sgt->sgl, 0, UNSET,
 200                                 buf->bpl, 0, chan->height);
 201                 break;
 202         case V4L2_FIELD_BOTTOM:
 203                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 204                                 sgt->sgl, UNSET, 0,
 205                                 buf->bpl, 0, chan->height);
 206                 break;
 207         case V4L2_FIELD_INTERLACED:
 208                 /* All other formats are top field first */
 209                 line0_offset = 0;
 210                 dprintk(1, "top field first\n");
 211
 212                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 213                                 sgt->sgl, line0_offset,
 214                                 bpl_local, bpl_local, bpl_local,
 215                                 chan->height >> 1);
 216                 break;
 217         case V4L2_FIELD_SEQ_TB:
 218                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 219                                 sgt->sgl,
 220                                 0, buf->bpl * (chan->height >> 1),
 221                                 buf->bpl, 0, chan->height >> 1);
 222                 break;
 223         case V4L2_FIELD_SEQ_BT:
 224                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 225                                 sgt->sgl,
 226                                 buf->bpl * (chan->height >> 1), 0,
 227                                 buf->bpl, 0, chan->height >> 1);
 228                 break;
 229         default:
 230                 WARN_ON(1);
 231                 ret = -EINVAL;
 232                 break;
 233         }
 234
 235         dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
 236                 buf, buf->vb.vb2_buf.index, chan->width, chan->height,
 237                 chan->fmt->depth, chan->fmt->name,
 238                 (unsigned long)buf->risc.dma);
 239
 240         return ret;
 241 }
 242
 243 static void cx25821_buffer_finish(struct vb2_buffer *vb)
 244 {
 245         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 246         struct cx25821_buffer *buf =
 247                 container_of(vbuf, struct cx25821_buffer, vb);
 248         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 249         struct cx25821_dev *dev = chan->dev;
 250
 251         cx25821_free_buffer(dev, buf);
 252 }
 253
 254 static void cx25821_buffer_queue(struct vb2_buffer *vb)
 255 {
 256         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 257         struct cx25821_buffer *buf =
 258                 container_of(vbuf, struct cx25821_buffer, vb);
 259         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 260         struct cx25821_dev *dev = chan->dev;
 261         struct cx25821_buffer *prev;
 262         struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
 263
 264         buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12);
 265         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
 266         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12);
 267         buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
 268
 269         if (list_empty(&q->active)) {
 270                 list_add_tail(&buf->queue, &q->active);
 271         } else {
 272                 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
 273                 prev = list_entry(q->active.prev, struct cx25821_buffer,
 274                                 queue);
 275                 list_add_tail(&buf->queue, &q->active);
 276                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 277         }
 278 }
 279
 280 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count)
 281 {
 282         struct cx25821_channel *chan = q->drv_priv;
 283         struct cx25821_dev *dev = chan->dev;
 284         struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
 285         struct cx25821_buffer *buf = list_entry(dmaq->active.next,
 286                         struct cx25821_buffer, queue);
 287
 288         dmaq->count = 0;
 289         cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels);
 290         return 0;
 291 }
 292
 293 static void cx25821_stop_streaming(struct vb2_queue *q)
 294 {
 295         struct cx25821_channel *chan = q->drv_priv;
 296         struct cx25821_dev *dev = chan->dev;
 297         struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
 298         unsigned long flags;
 299
 300         cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */
 301         spin_lock_irqsave(&dev->slock, flags);
 302         while (!list_empty(&dmaq->active)) {
 303                 struct cx25821_buffer *buf = list_entry(dmaq->active.next,
 304                         struct cx25821_buffer, queue);
 305
 306                 list_del(&buf->queue);
 307                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 308         }
 309         spin_unlock_irqrestore(&dev->slock, flags);
 310 }
 311
 312 static struct vb2_ops cx25821_video_qops = {
 313         .queue_setup    = cx25821_queue_setup,
 314         .buf_prepare  = cx25821_buffer_prepare,
 315         .buf_finish = cx25821_buffer_finish,
 316         .buf_queue    = cx25821_buffer_queue,
 317         .wait_prepare = vb2_ops_wait_prepare,
 318         .wait_finish = vb2_ops_wait_finish,
 319         .start_streaming = cx25821_start_streaming,
 320         .stop_streaming = cx25821_stop_streaming,
 321 };
 322
 323 /* VIDEO IOCTLS */
 324
 325 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 326                             struct v4l2_fmtdesc *f)
 327 {
 328         if (unlikely(f->index >= ARRAY_SIZE(formats)))
 329                 return -EINVAL;
 330
 331         strlcpy(f->description, formats[f->index].name, sizeof(f->description));
 332         f->pixelformat = formats[f->index].fourcc;
 333
 334         return 0;
 335 }
 336
 337 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 338                                  struct v4l2_format *f)
 339 {
 340         struct cx25821_channel *chan = video_drvdata(file);
 341
 342         f->fmt.pix.width = chan->width;
 343         f->fmt.pix.height = chan->height;
 344         f->fmt.pix.field = chan->field;
 345         f->fmt.pix.pixelformat = chan->fmt->fourcc;
 346         f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
 347         f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
 348         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 349
 350         return 0;
 351 }
 352
 353 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 354                                    struct v4l2_format *f)
 355 {
 356         struct cx25821_channel *chan = video_drvdata(file);
 357         struct cx25821_dev *dev = chan->dev;
 358         const struct cx25821_fmt *fmt;
 359         enum v4l2_field field = f->fmt.pix.field;
 360         unsigned int maxh;
 361         unsigned w;
 362
 363         fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 364         if (NULL == fmt)
 365                 return -EINVAL;
 366         maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 367
 368         w = f->fmt.pix.width;
 369         if (field != V4L2_FIELD_BOTTOM)
 370                 field = V4L2_FIELD_TOP;
 371         if (w < 352) {
 372                 w = 176;
 373                 f->fmt.pix.height = maxh / 4;
 374         } else if (w < 720) {
 375                 w = 352;
 376                 f->fmt.pix.height = maxh / 2;
 377         } else {
 378                 w = 720;
 379                 f->fmt.pix.height = maxh;
 380                 field = V4L2_FIELD_INTERLACED;
 381         }
 382         f->fmt.pix.field = field;
 383         f->fmt.pix.width = w;
 384         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 385         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 386         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 387
 388         return 0;
 389 }
 390
 391 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 392                                 struct v4l2_format *f)
 393 {
 394         struct cx25821_channel *chan = video_drvdata(file);
 395         struct cx25821_dev *dev = chan->dev;
 396         int pix_format = PIXEL_FRMT_422;
 397         int err;
 398
 399         err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
 400
 401         if (0 != err)
 402                 return err;
 403
 404         chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 405         chan->field = f->fmt.pix.field;
 406         chan->width = f->fmt.pix.width;
 407         chan->height = f->fmt.pix.height;
 408
 409         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
 410                 pix_format = PIXEL_FRMT_411;
 411         else
 412                 pix_format = PIXEL_FRMT_422;
 413
 414         cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
 415
 416         /* check if cif resolution */
 417         if (chan->width == 320 || chan->width == 352)
 418                 chan->use_cif_resolution = 1;
 419         else
 420                 chan->use_cif_resolution = 0;
 421
 422         chan->cif_width = chan->width;
 423         medusa_set_resolution(dev, chan->width, SRAM_CH00);
 424         return 0;
 425 }
 426
 427 static int vidioc_log_status(struct file *file, void *priv)
 428 {
 429         struct cx25821_channel *chan = video_drvdata(file);
 430         struct cx25821_dev *dev = chan->dev;
 431         const struct sram_channel *sram_ch = chan->sram_channels;
 432         u32 tmp = 0;
 433
 434         tmp = cx_read(sram_ch->dma_ctl);
 435         pr_info("Video input 0 is %s\n",
 436                 (tmp & 0x11) ? "streaming" : "stopped");
 437         return 0;
 438 }
 439
 440
 441 static int cx25821_vidioc_querycap(struct file *file, void *priv,
 442                             struct v4l2_capability *cap)
 443 {
 444         struct cx25821_channel *chan = video_drvdata(file);
 445         struct cx25821_dev *dev = chan->dev;
 446         const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
 447                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
 448         const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE;
 449
 450         strcpy(cap->driver, "cx25821");
 451         strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
 452         sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
 453         if (chan->id >= VID_CHANNEL_NUM)
 454                 cap->device_caps = cap_output;
 455         else
 456                 cap->device_caps = cap_input;
 457         cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS;
 458         return 0;
 459 }
 460
 461 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
 462 {
 463         struct cx25821_channel *chan = video_drvdata(file);
 464
 465         *tvnorms = chan->dev->tvnorm;
 466         return 0;
 467 }
 468
 469 static int cx25821_vidioc_s_std(struct file *file, void *priv,
 470                                 v4l2_std_id tvnorms)
 471 {
 472         struct cx25821_channel *chan = video_drvdata(file);
 473         struct cx25821_dev *dev = chan->dev;
 474
 475         if (dev->tvnorm == tvnorms)
 476                 return 0;
 477
 478         dev->tvnorm = tvnorms;
 479         chan->width = 720;
 480         chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 481
 482         medusa_set_videostandard(dev);
 483
 484         return 0;
 485 }
 486
 487 static int cx25821_vidioc_enum_input(struct file *file, void *priv,
 488                               struct v4l2_input *i)
 489 {
 490         if (i->index)
 491                 return -EINVAL;
 492
 493         i->type = V4L2_INPUT_TYPE_CAMERA;
 494         i->std = CX25821_NORMS;
 495         strcpy(i->name, "Composite");
 496         return 0;
 497 }
 498
 499 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 500 {
 501         *i = 0;
 502         return 0;
 503 }
 504
 505 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
 506 {
 507         return i ? -EINVAL : 0;
 508 }
 509
 510 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
 511 {
 512         struct cx25821_channel *chan =
 513                 container_of(ctrl->handler, struct cx25821_channel, hdl);
 514         struct cx25821_dev *dev = chan->dev;
 515
 516         switch (ctrl->id) {
 517         case V4L2_CID_BRIGHTNESS:
 518                 medusa_set_brightness(dev, ctrl->val, chan->id);
 519                 break;
 520         case V4L2_CID_HUE:
 521                 medusa_set_hue(dev, ctrl->val, chan->id);
 522                 break;
 523         case V4L2_CID_CONTRAST:
 524                 medusa_set_contrast(dev, ctrl->val, chan->id);
 525                 break;
 526         case V4L2_CID_SATURATION:
 527                 medusa_set_saturation(dev, ctrl->val, chan->id);
 528                 break;
 529         default:
 530                 return -EINVAL;
 531         }
 532         return 0;
 533 }
 534
 535 static int cx25821_vidioc_enum_output(struct file *file, void *priv,
 536                               struct v4l2_output *o)
 537 {
 538         if (o->index)
 539                 return -EINVAL;
 540
 541         o->type = V4L2_INPUT_TYPE_CAMERA;
 542         o->std = CX25821_NORMS;
 543         strcpy(o->name, "Composite");
 544         return 0;
 545 }
 546
 547 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
 548 {
 549         *o = 0;
 550         return 0;
 551 }
 552
 553 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
 554 {
 555         return o ? -EINVAL : 0;
 556 }
 557
 558 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
 559                                    struct v4l2_format *f)
 560 {
 561         struct cx25821_channel *chan = video_drvdata(file);
 562         struct cx25821_dev *dev = chan->dev;
 563         const struct cx25821_fmt *fmt;
 564
 565         fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 566         if (NULL == fmt)
 567                 return -EINVAL;
 568         f->fmt.pix.width = 720;
 569         f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 570         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 571         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 572         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 573         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 574         return 0;
 575 }
 576
 577 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
 578                                 struct v4l2_format *f)
 579 {
 580         struct cx25821_channel *chan = video_drvdata(file);
 581         int err;
 582
 583         err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
 584
 585         if (0 != err)
 586                 return err;
 587
 588         chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 589         chan->field = f->fmt.pix.field;
 590         chan->width = f->fmt.pix.width;
 591         chan->height = f->fmt.pix.height;
 592         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
 593                 chan->pixel_formats = PIXEL_FRMT_411;
 594         else
 595                 chan->pixel_formats = PIXEL_FRMT_422;
 596         return 0;
 597 }
 598
 599 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
 600         .s_ctrl = cx25821_s_ctrl,
 601 };
 602
 603 static const struct v4l2_file_operations video_fops = {
 604         .owner = THIS_MODULE,
 605         .open = v4l2_fh_open,
 606         .release        = vb2_fop_release,
 607         .read           = vb2_fop_read,
 608         .poll           = vb2_fop_poll,
 609         .unlocked_ioctl = video_ioctl2,
 610         .mmap           = vb2_fop_mmap,
 611 };
 612
 613 static const struct v4l2_ioctl_ops video_ioctl_ops = {
 614         .vidioc_querycap = cx25821_vidioc_querycap,
 615         .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
 616         .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
 617         .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
 618         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
 619         .vidioc_reqbufs       = vb2_ioctl_reqbufs,
 620         .vidioc_prepare_buf   = vb2_ioctl_prepare_buf,
 621         .vidioc_create_bufs   = vb2_ioctl_create_bufs,
 622         .vidioc_querybuf      = vb2_ioctl_querybuf,
 623         .vidioc_qbuf          = vb2_ioctl_qbuf,
 624         .vidioc_dqbuf         = vb2_ioctl_dqbuf,
 625         .vidioc_streamon      = vb2_ioctl_streamon,
 626         .vidioc_streamoff     = vb2_ioctl_streamoff,
 627         .vidioc_g_std = cx25821_vidioc_g_std,
 628         .vidioc_s_std = cx25821_vidioc_s_std,
 629         .vidioc_enum_input = cx25821_vidioc_enum_input,
 630         .vidioc_g_input = cx25821_vidioc_g_input,
 631         .vidioc_s_input = cx25821_vidioc_s_input,
 632         .vidioc_log_status = vidioc_log_status,
 633         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
 634         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 635 };
 636
 637 static const struct video_device cx25821_video_device = {
 638         .name = "cx25821-video",
 639         .fops = &video_fops,
 640         .release = video_device_release_empty,
 641         .minor = -1,
 642         .ioctl_ops = &video_ioctl_ops,
 643         .tvnorms = CX25821_NORMS,
 644 };
 645
 646 static const struct v4l2_file_operations video_out_fops = {
 647         .owner = THIS_MODULE,
 648         .open = v4l2_fh_open,
 649         .release        = vb2_fop_release,
 650         .write          = vb2_fop_write,
 651         .poll           = vb2_fop_poll,
 652         .unlocked_ioctl = video_ioctl2,
 653         .mmap           = vb2_fop_mmap,
 654 };
 655
 656 static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
 657         .vidioc_querycap = cx25821_vidioc_querycap,
 658         .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
 659         .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
 660         .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
 661         .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
 662         .vidioc_g_std = cx25821_vidioc_g_std,
 663         .vidioc_s_std = cx25821_vidioc_s_std,
 664         .vidioc_enum_output = cx25821_vidioc_enum_output,
 665         .vidioc_g_output = cx25821_vidioc_g_output,
 666         .vidioc_s_output = cx25821_vidioc_s_output,
 667         .vidioc_log_status = vidioc_log_status,
 668 };
 669
 670 static const struct video_device cx25821_video_out_device = {
 671         .name = "cx25821-video",
 672         .fops = &video_out_fops,
 673         .release = video_device_release_empty,
 674         .minor = -1,
 675         .ioctl_ops = &video_out_ioctl_ops,
 676         .tvnorms = CX25821_NORMS,
 677 };
 678
 679 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
 680 {
 681         cx_clear(PCI_INT_MSK, 1);
 682
 683         if (video_is_registered(&dev->channels[chan_num].vdev)) {
 684                 video_unregister_device(&dev->channels[chan_num].vdev);
 685                 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
 686         }
 687 }
 688
 689 int cx25821_video_register(struct cx25821_dev *dev)
 690 {
 691         int err;
 692         int i;
 693
 694         /* initial device configuration */
 695         dev->tvnorm = V4L2_STD_NTSC_M;
 696
 697         spin_lock_init(&dev->slock);
 698
 699         for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) {
 700                 struct cx25821_channel *chan = &dev->channels[i];
 701                 struct video_device *vdev = &chan->vdev;
 702                 struct v4l2_ctrl_handler *hdl = &chan->hdl;
 703                 struct vb2_queue *q;
 704                 bool is_output = i > SRAM_CH08;
 705
 706                 if (i == SRAM_CH08) /* audio channel */
 707                         continue;
 708
 709                 if (!is_output) {
 710                         v4l2_ctrl_handler_init(hdl, 4);
 711                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 712                                         V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
 713                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 714                                         V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
 715                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 716                                         V4L2_CID_SATURATION, 0, 10000, 1, 5000);
 717                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 718                                         V4L2_CID_HUE, 0, 10000, 1, 5000);
 719                         if (hdl->error) {
 720                                 err = hdl->error;
 721                                 goto fail_unreg;
 722                         }
 723                         err = v4l2_ctrl_handler_setup(hdl);
 724                         if (err)
 725                                 goto fail_unreg;
 726                 } else {
 727                         chan->out = &dev->vid_out_data[i - SRAM_CH09];
 728                         chan->out->chan = chan;
 729                 }
 730
 731                 chan->sram_channels = &cx25821_sram_channels[i];
 732                 chan->width = 720;
 733                 chan->field = V4L2_FIELD_INTERLACED;
 734                 if (dev->tvnorm & V4L2_STD_625_50)
 735                         chan->height = 576;
 736                 else
 737                         chan->height = 480;
 738
 739                 if (chan->pixel_formats == PIXEL_FRMT_411)
 740                         chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
 741                 else
 742                         chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
 743
 744                 cx_write(chan->sram_channels->int_stat, 0xffffffff);
 745
 746                 INIT_LIST_HEAD(&chan->dma_vidq.active);
 747
 748                 q = &chan->vidq;
 749
 750                 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
 751                                       V4L2_BUF_TYPE_VIDEO_CAPTURE;
 752                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
 753                 q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
 754                 q->gfp_flags = GFP_DMA32;
 755                 q->min_buffers_needed = 2;
 756                 q->drv_priv = chan;
 757                 q->buf_struct_size = sizeof(struct cx25821_buffer);
 758                 q->ops = &cx25821_video_qops;
 759                 q->mem_ops = &vb2_dma_sg_memops;
 760                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 761                 q->lock = &dev->lock;
 762
 763                 if (!is_output) {
 764                         err = vb2_queue_init(q);
 765                         if (err < 0)
 766                                 goto fail_unreg;
 767                 }
 768
 769                 /* register v4l devices */
 770                 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
 771                 vdev->v4l2_dev = &dev->v4l2_dev;
 772                 if (!is_output)
 773                         vdev->ctrl_handler = hdl;
 774                 else
 775                         vdev->vfl_dir = VFL_DIR_TX;
 776                 vdev->lock = &dev->lock;
 777                 vdev->queue = q;
 778                 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
 779                 video_set_drvdata(vdev, chan);
 780
 781                 err = video_register_device(vdev, VFL_TYPE_GRABBER,
 782                                             video_nr[dev->nr]);
 783
 784                 if (err < 0)
 785                         goto fail_unreg;
 786         }
 787
 788         /* set PCI interrupt */
 789         cx_set(PCI_INT_MSK, 0xff);
 790
 791         return 0;
 792
 793 fail_unreg:
 794         while (i >= 0)
 795                 cx25821_video_unregister(dev, i--);
 796         return err;
 797 }