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         buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset;
 112 }
 113
 114
 115 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
 116                         struct vivid_buffer *buf)
 117 {
 118         struct v4l2_sliced_vbi_data *vbuf =
 119                         vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 120
 121         buf->vb.sequence = dev->vbi_cap_seq_count;
 122         if (dev->field_cap == V4L2_FIELD_ALTERNATE)
 123                 buf->vb.sequence /= 2;
 124
 125         vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
 126
 127         memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0));
 128         if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
 129                 unsigned i;
 130
 131                 for (i = 0; i < 25; i++)
 132                         vbuf[i] = dev->vbi_gen.data[i];
 133         }
 134
 135         buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset;
 136 }
 137
 138 static int vbi_cap_queue_setup(struct vb2_queue *vq,
 139                        unsigned *nbuffers, unsigned *nplanes,
 140                        unsigned sizes[], struct device *alloc_devs[])
 141 {
 142         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 143         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 144         unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
 145                 36 * sizeof(struct v4l2_sliced_vbi_data) :
 146                 1440 * 2 * (is_60hz ? 12 : 18);
 147
 148         if (!vivid_is_sdtv_cap(dev))
 149                 return -EINVAL;
 150
 151         sizes[0] = size;
 152
 153         if (vq->num_buffers + *nbuffers < 2)
 154                 *nbuffers = 2 - vq->num_buffers;
 155
 156         *nplanes = 1;
 157         return 0;
 158 }
 159
 160 static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
 161 {
 162         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 163         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 164         unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
 165                 36 * sizeof(struct v4l2_sliced_vbi_data) :
 166                 1440 * 2 * (is_60hz ? 12 : 18);
 167
 168         dprintk(dev, 1, "%s\n", __func__);
 169
 170         if (dev->buf_prepare_error) {
 171                 /*
 172                  * Error injection: test what happens if buf_prepare() returns
 173                  * an error.
 174                  */
 175                 dev->buf_prepare_error = false;
 176                 return -EINVAL;
 177         }
 178         if (vb2_plane_size(vb, 0) < size) {
 179                 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
 180                                 __func__, vb2_plane_size(vb, 0), size);
 181                 return -EINVAL;
 182         }
 183         vb2_set_plane_payload(vb, 0, size);
 184
 185         return 0;
 186 }
 187
 188 static void vbi_cap_buf_queue(struct vb2_buffer *vb)
 189 {
 190         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 191         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 192         struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
 193
 194         dprintk(dev, 1, "%s\n", __func__);
 195
 196         spin_lock(&dev->slock);
 197         list_add_tail(&buf->list, &dev->vbi_cap_active);
 198         spin_unlock(&dev->slock);
 199 }
 200
 201 static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
 202 {
 203         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 204         int err;
 205
 206         dprintk(dev, 1, "%s\n", __func__);
 207         dev->vbi_cap_seq_count = 0;
 208         if (dev->start_streaming_error) {
 209                 dev->start_streaming_error = false;
 210                 err = -EINVAL;
 211         } else {
 212                 err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
 213         }
 214         if (err) {
 215                 struct vivid_buffer *buf, *tmp;
 216
 217                 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
 218                         list_del(&buf->list);
 219                         vb2_buffer_done(&buf->vb.vb2_buf,
 220                                         VB2_BUF_STATE_QUEUED);
 221                 }
 222         }
 223         return err;
 224 }
 225
 226 /* abort streaming and wait for last buffer */
 227 static void vbi_cap_stop_streaming(struct vb2_queue *vq)
 228 {
 229         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 230
 231         dprintk(dev, 1, "%s\n", __func__);
 232         vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
 233 }
 234
 235 const struct vb2_ops vivid_vbi_cap_qops = {
 236         .queue_setup            = vbi_cap_queue_setup,
 237         .buf_prepare            = vbi_cap_buf_prepare,
 238         .buf_queue              = vbi_cap_buf_queue,
 239         .start_streaming        = vbi_cap_start_streaming,
 240         .stop_streaming         = vbi_cap_stop_streaming,
 241         .wait_prepare           = vb2_ops_wait_prepare,
 242         .wait_finish            = vb2_ops_wait_finish,
 243 };
 244
 245 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
 246                                         struct v4l2_format *f)
 247 {
 248         struct vivid_dev *dev = video_drvdata(file);
 249         struct v4l2_vbi_format *vbi = &f->fmt.vbi;
 250
 251         if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
 252                 return -EINVAL;
 253
 254         vivid_g_fmt_vbi_cap(dev, vbi);
 255         return 0;
 256 }
 257
 258 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
 259                                         struct v4l2_format *f)
 260 {
 261         struct vivid_dev *dev = video_drvdata(file);
 262         int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
 263
 264         if (ret)
 265                 return ret;
 266         if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
 267                 return -EBUSY;
 268         dev->stream_sliced_vbi_cap = false;
 269         dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 270         return 0;
 271 }
 272
 273 void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
 274 {
 275         vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
 276         vbi->service_set = service_set;
 277         memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
 278         memset(vbi->reserved, 0, sizeof(vbi->reserved));
 279
 280         if (vbi->service_set == 0)
 281                 return;
 282
 283         if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
 284                 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 285                 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 286         }
 287         if (vbi->service_set & V4L2_SLICED_WSS_625) {
 288                 unsigned i;
 289
 290                 for (i = 7; i <= 18; i++)
 291                         vbi->service_lines[0][i] =
 292                         vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
 293                 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
 294         }
 295 }
 296
 297 int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 298 {
 299         struct vivid_dev *dev = video_drvdata(file);
 300         struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
 301
 302         if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
 303                 return -EINVAL;
 304
 305         vivid_fill_service_lines(vbi, dev->service_set_cap);
 306         return 0;
 307 }
 308
 309 int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 310 {
 311         struct vivid_dev *dev = video_drvdata(file);
 312         struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
 313         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 314         u32 service_set = vbi->service_set;
 315
 316         if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
 317                 return -EINVAL;
 318
 319         service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
 320                                  V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 321         vivid_fill_service_lines(vbi, service_set);
 322         return 0;
 323 }
 324
 325 int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 326 {
 327         struct vivid_dev *dev = video_drvdata(file);
 328         struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
 329         int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
 330
 331         if (ret)
 332                 return ret;
 333         if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
 334                 return -EBUSY;
 335         dev->service_set_cap = vbi->service_set;
 336         dev->stream_sliced_vbi_cap = true;
 337         dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
 338         return 0;
 339 }
 340
 341 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
 342 {
 343         struct vivid_dev *dev = video_drvdata(file);
 344         struct video_device *vdev = video_devdata(file);
 345         bool is_60hz;
 346
 347         if (vdev->vfl_dir == VFL_DIR_RX) {
 348                 is_60hz = dev->std_cap & V4L2_STD_525_60;
 349                 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
 350                     cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
 351                         return -EINVAL;
 352         } else {
 353                 is_60hz = dev->std_out & V4L2_STD_525_60;
 354                 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
 355                     cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
 356                         return -EINVAL;
 357         }
 358
 359         cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
 360                                      V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 361         if (is_60hz) {
 362                 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 363                 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 364         } else {
 365                 unsigned i;
 366
 367                 for (i = 7; i <= 18; i++)
 368                         cap->service_lines[0][i] =
 369                         cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
 370                 cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
 371         }
 372         return 0;
 373 }