drivers/media/platform/vivid/vivid-vbi-cap.c

   1 /*
   2  * vivid-vbi-cap.c - vbi capture support functions.
   3  *
   4  * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
   5  *
   6  * This program is free software; you may redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  11  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  12  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  13  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  14  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  15  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  16  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  17  * SOFTWARE.
  18  */
  19
  20 #include <linux/errno.h>
  21 #include <linux/kernel.h>
  22 #include <linux/videodev2.h>
  23 #include <media/v4l2-common.h>
  24
  25 #include "vivid-core.h"
  26 #include "vivid-kthread-cap.h"
  27 #include "vivid-vbi-cap.h"
  28 #include "vivid-vbi-gen.h"
  29
  30 static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr)
  31 {
  32         struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen;
  33         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
  34
  35         vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr);
  36
  37         if (!is_60hz) {
  38                 if (dev->loop_video) {
  39                         if (dev->vbi_out_have_wss) {
  40                                 vbi_gen->data[12].data[0] = dev->vbi_out_wss[0];
  41                                 vbi_gen->data[12].data[1] = dev->vbi_out_wss[1];
  42                         } else {
  43                                 vbi_gen->data[12].id = 0;
  44                         }
  45                 } else {
  46                         switch (tpg_g_video_aspect(&dev->tpg)) {
  47                         case TPG_VIDEO_ASPECT_14X9_CENTRE:
  48                                 vbi_gen->data[12].data[0] = 0x01;
  49                                 break;
  50                         case TPG_VIDEO_ASPECT_16X9_CENTRE:
  51                                 vbi_gen->data[12].data[0] = 0x0b;
  52                                 break;
  53                         case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC:
  54                                 vbi_gen->data[12].data[0] = 0x07;
  55                                 break;
  56                         case TPG_VIDEO_ASPECT_4X3:
  57                         default:
  58                                 vbi_gen->data[12].data[0] = 0x08;
  59                                 break;
  60                         }
  61                 }
  62         } else if (dev->loop_video && is_60hz) {
  63                 if (dev->vbi_out_have_cc[0]) {
  64                         vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0];
  65                         vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1];
  66                 } else {
  67                         vbi_gen->data[0].id = 0;
  68                 }
  69                 if (dev->vbi_out_have_cc[1]) {
  70                         vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0];
  71                         vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1];
  72                 } else {
  73                         vbi_gen->data[1].id = 0;
  74                 }
  75         }
  76 }
  77
  78 static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi)
  79 {
  80         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
  81
  82         vbi->sampling_rate = 27000000;
  83         vbi->offset = 24;
  84         vbi->samples_per_line = 1440;
  85         vbi->sample_format = V4L2_PIX_FMT_GREY;
  86         vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5;
  87         vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5;
  88         vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18;
  89         vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0;
  90         vbi->reserved[0] = 0;
  91         vbi->reserved[1] = 0;
  92 }
  93
  94 void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
  95 {
  96         struct v4l2_vbi_format vbi;
  97         u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
  98
  99         vivid_g_fmt_vbi_cap(dev, &vbi);
 100         buf->vb.sequence = dev->vbi_cap_seq_count;
 101         if (dev->field_cap == V4L2_FIELD_ALTERNATE)
 102                 buf->vb.sequence /= 2;
 103
 104         vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
 105
 106         memset(vbuf, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0));
 107
 108         if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode))
 109                 vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
 110
 111         v4l2_get_timestamp(&buf->vb.timestamp);
 112         buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
 113 }
 114
 115
 116 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
 117                         struct vivid_buffer *buf)
 118 {
 119         struct v4l2_sliced_vbi_data *vbuf =
 120                         vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 121
 122         buf->vb.sequence = dev->vbi_cap_seq_count;
 123         if (dev->field_cap == V4L2_FIELD_ALTERNATE)
 124                 buf->vb.sequence /= 2;
 125
 126         vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
 127
 128         memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0));
 129         if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
 130                 unsigned i;
 131
 132                 for (i = 0; i < 25; i++)
 133                         vbuf[i] = dev->vbi_gen.data[i];
 134         }
 135
 136         v4l2_get_timestamp(&buf->vb.timestamp);
 137         buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
 138 }
 139
 140 static int vbi_cap_queue_setup(struct vb2_queue *vq, const void *parg,
 141                        unsigned *nbuffers, unsigned *nplanes,
 142                        unsigned sizes[], void *alloc_ctxs[])
 143 {
 144         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 145         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 146         unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
 147                 36 * sizeof(struct v4l2_sliced_vbi_data) :
 148                 1440 * 2 * (is_60hz ? 12 : 18);
 149
 150         if (!vivid_is_sdtv_cap(dev))
 151                 return -EINVAL;
 152
 153         sizes[0] = size;
 154
 155         if (vq->num_buffers + *nbuffers < 2)
 156                 *nbuffers = 2 - vq->num_buffers;
 157
 158         *nplanes = 1;
 159         return 0;
 160 }
 161
 162 static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
 163 {
 164         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 165         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 166         unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
 167                 36 * sizeof(struct v4l2_sliced_vbi_data) :
 168                 1440 * 2 * (is_60hz ? 12 : 18);
 169
 170         dprintk(dev, 1, "%s\n", __func__);
 171
 172         if (dev->buf_prepare_error) {
 173                 /*
 174                  * Error injection: test what happens if buf_prepare() returns
 175                  * an error.
 176                  */
 177                 dev->buf_prepare_error = false;
 178                 return -EINVAL;
 179         }
 180         if (vb2_plane_size(vb, 0) < size) {
 181                 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
 182                                 __func__, vb2_plane_size(vb, 0), size);
 183                 return -EINVAL;
 184         }
 185         vb2_set_plane_payload(vb, 0, size);
 186
 187         return 0;
 188 }
 189
 190 static void vbi_cap_buf_queue(struct vb2_buffer *vb)
 191 {
 192         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 193         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 194         struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
 195
 196         dprintk(dev, 1, "%s\n", __func__);
 197
 198         spin_lock(&dev->slock);
 199         list_add_tail(&buf->list, &dev->vbi_cap_active);
 200         spin_unlock(&dev->slock);
 201 }
 202
 203 static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
 204 {
 205         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 206         int err;
 207
 208         dprintk(dev, 1, "%s\n", __func__);
 209         dev->vbi_cap_seq_count = 0;
 210         if (dev->start_streaming_error) {
 211                 dev->start_streaming_error = false;
 212                 err = -EINVAL;
 213         } else {
 214                 err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
 215         }
 216         if (err) {
 217                 struct vivid_buffer *buf, *tmp;
 218
 219                 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
 220                         list_del(&buf->list);
 221                         vb2_buffer_done(&buf->vb.vb2_buf,
 222                                         VB2_BUF_STATE_QUEUED);
 223                 }
 224         }
 225         return err;
 226 }
 227
 228 /* abort streaming and wait for last buffer */
 229 static void vbi_cap_stop_streaming(struct vb2_queue *vq)
 230 {
 231         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 232
 233         dprintk(dev, 1, "%s\n", __func__);
 234         vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
 235 }
 236
 237 const struct vb2_ops vivid_vbi_cap_qops = {
 238         .queue_setup            = vbi_cap_queue_setup,
 239         .buf_prepare            = vbi_cap_buf_prepare,
 240         .buf_queue              = vbi_cap_buf_queue,
 241         .start_streaming        = vbi_cap_start_streaming,
 242         .stop_streaming         = vbi_cap_stop_streaming,
 243         .wait_prepare           = vb2_ops_wait_prepare,
 244         .wait_finish            = vb2_ops_wait_finish,
 245 };
 246
 247 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
 248                                         struct v4l2_format *f)
 249 {
 250         struct vivid_dev *dev = video_drvdata(file);
 251         struct v4l2_vbi_format *vbi = &f->fmt.vbi;
 252
 253         if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
 254                 return -EINVAL;
 255
 256         vivid_g_fmt_vbi_cap(dev, vbi);
 257         return 0;
 258 }
 259
 260 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
 261                                         struct v4l2_format *f)
 262 {
 263         struct vivid_dev *dev = video_drvdata(file);
 264         int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
 265
 266         if (ret)
 267                 return ret;
 268         if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
 269                 return -EBUSY;
 270         dev->stream_sliced_vbi_cap = false;
 271         dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 272         return 0;
 273 }
 274
 275 void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
 276 {
 277         vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
 278         vbi->service_set = service_set;
 279         memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
 280         memset(vbi->reserved, 0, sizeof(vbi->reserved));
 281
 282         if (vbi->service_set == 0)
 283                 return;
 284
 285         if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
 286                 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 287                 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 288         }
 289         if (vbi->service_set & V4L2_SLICED_WSS_625) {
 290                 unsigned i;
 291
 292                 for (i = 7; i <= 18; i++)
 293                         vbi->service_lines[0][i] =
 294                         vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
 295                 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
 296         }
 297 }
 298
 299 int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 300 {
 301         struct vivid_dev *dev = video_drvdata(file);
 302         struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
 303
 304         if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
 305                 return -EINVAL;
 306
 307         vivid_fill_service_lines(vbi, dev->service_set_cap);
 308         return 0;
 309 }
 310
 311 int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 312 {
 313         struct vivid_dev *dev = video_drvdata(file);
 314         struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
 315         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 316         u32 service_set = vbi->service_set;
 317
 318         if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
 319                 return -EINVAL;
 320
 321         service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
 322                                  V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 323         vivid_fill_service_lines(vbi, service_set);
 324         return 0;
 325 }
 326
 327 int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 328 {
 329         struct vivid_dev *dev = video_drvdata(file);
 330         struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
 331         int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
 332
 333         if (ret)
 334                 return ret;
 335         if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
 336                 return -EBUSY;
 337         dev->service_set_cap = vbi->service_set;
 338         dev->stream_sliced_vbi_cap = true;
 339         dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
 340         return 0;
 341 }
 342
 343 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
 344 {
 345         struct vivid_dev *dev = video_drvdata(file);
 346         struct video_device *vdev = video_devdata(file);
 347         bool is_60hz;
 348
 349         if (vdev->vfl_dir == VFL_DIR_RX) {
 350                 is_60hz = dev->std_cap & V4L2_STD_525_60;
 351                 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
 352                     cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
 353                         return -EINVAL;
 354         } else {
 355                 is_60hz = dev->std_out & V4L2_STD_525_60;
 356                 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
 357                     cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
 358                         return -EINVAL;
 359         }
 360
 361         cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
 362                                      V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 363         if (is_60hz) {
 364                 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 365                 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 366         } else {
 367                 unsigned i;
 368
 369                 for (i = 7; i <= 18; i++)
 370                         cap->service_lines[0][i] =
 371                         cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
 372                 cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
 373         }
 374         return 0;
 375 }