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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * vivid-vbi-cap.c - vbi capture support functions.
   4  *
   5  * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
   6  */
   7
   8 #include <linux/errno.h>
   9 #include <linux/kernel.h>
  10 #include <linux/videodev2.h>
  11 #include <media/v4l2-common.h>
  12
  13 #include "vivid-core.h"
  14 #include "vivid-kthread-cap.h"
  15 #include "vivid-vbi-cap.h"
  16 #include "vivid-vbi-gen.h"
  17
  18 static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr)
  19 {
  20         struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen;
  21         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
  22
  23         vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr);
  24
  25         if (!is_60hz) {
  26                 if (dev->loop_video) {
  27                         if (dev->vbi_out_have_wss) {
  28                                 vbi_gen->data[12].data[0] = dev->vbi_out_wss[0];
  29                                 vbi_gen->data[12].data[1] = dev->vbi_out_wss[1];
  30                         } else {
  31                                 vbi_gen->data[12].id = 0;
  32                         }
  33                 } else {
  34                         switch (tpg_g_video_aspect(&dev->tpg)) {
  35                         case TPG_VIDEO_ASPECT_14X9_CENTRE:
  36                                 vbi_gen->data[12].data[0] = 0x01;
  37                                 break;
  38                         case TPG_VIDEO_ASPECT_16X9_CENTRE:
  39                                 vbi_gen->data[12].data[0] = 0x0b;
  40                                 break;
  41                         case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC:
  42                                 vbi_gen->data[12].data[0] = 0x07;
  43                                 break;
  44                         case TPG_VIDEO_ASPECT_4X3:
  45                         default:
  46                                 vbi_gen->data[12].data[0] = 0x08;
  47                                 break;
  48                         }
  49                 }
  50         } else if (dev->loop_video && is_60hz) {
  51                 if (dev->vbi_out_have_cc[0]) {
  52                         vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0];
  53                         vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1];
  54                 } else {
  55                         vbi_gen->data[0].id = 0;
  56                 }
  57                 if (dev->vbi_out_have_cc[1]) {
  58                         vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0];
  59                         vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1];
  60                 } else {
  61                         vbi_gen->data[1].id = 0;
  62                 }
  63         }
  64 }
  65
  66 static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi)
  67 {
  68         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
  69
  70         vbi->sampling_rate = 27000000;
  71         vbi->offset = 24;
  72         vbi->samples_per_line = 1440;
  73         vbi->sample_format = V4L2_PIX_FMT_GREY;
  74         vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5;
  75         vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5;
  76         vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18;
  77         vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0;
  78         vbi->reserved[0] = 0;
  79         vbi->reserved[1] = 0;
  80 }
  81
  82 void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
  83 {
  84         struct v4l2_vbi_format vbi;
  85         u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
  86
  87         vivid_g_fmt_vbi_cap(dev, &vbi);
  88         buf->vb.sequence = dev->vbi_cap_seq_count;
  89         if (dev->field_cap == V4L2_FIELD_ALTERNATE)
  90                 buf->vb.sequence /= 2;
  91
  92         vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
  93
  94         memset(vbuf, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0));
  95
  96         if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode))
  97                 vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
  98
  99         buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset;
 100 }
 101
 102
 103 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
 104                         struct vivid_buffer *buf)
 105 {
 106         struct v4l2_sliced_vbi_data *vbuf =
 107                         vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 108
 109         buf->vb.sequence = dev->vbi_cap_seq_count;
 110         if (dev->field_cap == V4L2_FIELD_ALTERNATE)
 111                 buf->vb.sequence /= 2;
 112
 113         vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence);
 114
 115         memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0));
 116         if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode)) {
 117                 unsigned i;
 118
 119                 for (i = 0; i < 25; i++)
 120                         vbuf[i] = dev->vbi_gen.data[i];
 121         }
 122
 123         buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset;
 124 }
 125
 126 static int vbi_cap_queue_setup(struct vb2_queue *vq,
 127                        unsigned *nbuffers, unsigned *nplanes,
 128                        unsigned sizes[], struct device *alloc_devs[])
 129 {
 130         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 131         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 132         unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
 133                 36 * sizeof(struct v4l2_sliced_vbi_data) :
 134                 1440 * 2 * (is_60hz ? 12 : 18);
 135
 136         if (!vivid_is_sdtv_cap(dev))
 137                 return -EINVAL;
 138
 139         sizes[0] = size;
 140
 141         if (vq->num_buffers + *nbuffers < 2)
 142                 *nbuffers = 2 - vq->num_buffers;
 143
 144         *nplanes = 1;
 145         return 0;
 146 }
 147
 148 static int vbi_cap_buf_prepare(struct vb2_buffer *vb)
 149 {
 150         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 151         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 152         unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ?
 153                 36 * sizeof(struct v4l2_sliced_vbi_data) :
 154                 1440 * 2 * (is_60hz ? 12 : 18);
 155
 156         dprintk(dev, 1, "%s\n", __func__);
 157
 158         if (dev->buf_prepare_error) {
 159                 /*
 160                  * Error injection: test what happens if buf_prepare() returns
 161                  * an error.
 162                  */
 163                 dev->buf_prepare_error = false;
 164                 return -EINVAL;
 165         }
 166         if (vb2_plane_size(vb, 0) < size) {
 167                 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n",
 168                                 __func__, vb2_plane_size(vb, 0), size);
 169                 return -EINVAL;
 170         }
 171         vb2_set_plane_payload(vb, 0, size);
 172
 173         return 0;
 174 }
 175
 176 static void vbi_cap_buf_queue(struct vb2_buffer *vb)
 177 {
 178         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 179         struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
 180         struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb);
 181
 182         dprintk(dev, 1, "%s\n", __func__);
 183
 184         spin_lock(&dev->slock);
 185         list_add_tail(&buf->list, &dev->vbi_cap_active);
 186         spin_unlock(&dev->slock);
 187 }
 188
 189 static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count)
 190 {
 191         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 192         int err;
 193
 194         dprintk(dev, 1, "%s\n", __func__);
 195         dev->vbi_cap_seq_count = 0;
 196         if (dev->start_streaming_error) {
 197                 dev->start_streaming_error = false;
 198                 err = -EINVAL;
 199         } else {
 200                 err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming);
 201         }
 202         if (err) {
 203                 struct vivid_buffer *buf, *tmp;
 204
 205                 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) {
 206                         list_del(&buf->list);
 207                         vb2_buffer_done(&buf->vb.vb2_buf,
 208                                         VB2_BUF_STATE_QUEUED);
 209                 }
 210         }
 211         return err;
 212 }
 213
 214 /* abort streaming and wait for last buffer */
 215 static void vbi_cap_stop_streaming(struct vb2_queue *vq)
 216 {
 217         struct vivid_dev *dev = vb2_get_drv_priv(vq);
 218
 219         dprintk(dev, 1, "%s\n", __func__);
 220         vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming);
 221 }
 222
 223 const struct vb2_ops vivid_vbi_cap_qops = {
 224         .queue_setup            = vbi_cap_queue_setup,
 225         .buf_prepare            = vbi_cap_buf_prepare,
 226         .buf_queue              = vbi_cap_buf_queue,
 227         .start_streaming        = vbi_cap_start_streaming,
 228         .stop_streaming         = vbi_cap_stop_streaming,
 229         .wait_prepare           = vb2_ops_wait_prepare,
 230         .wait_finish            = vb2_ops_wait_finish,
 231 };
 232
 233 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
 234                                         struct v4l2_format *f)
 235 {
 236         struct vivid_dev *dev = video_drvdata(file);
 237         struct v4l2_vbi_format *vbi = &f->fmt.vbi;
 238
 239         if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap)
 240                 return -EINVAL;
 241
 242         vivid_g_fmt_vbi_cap(dev, vbi);
 243         return 0;
 244 }
 245
 246 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
 247                                         struct v4l2_format *f)
 248 {
 249         struct vivid_dev *dev = video_drvdata(file);
 250         int ret = vidioc_g_fmt_vbi_cap(file, priv, f);
 251
 252         if (ret)
 253                 return ret;
 254         if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
 255                 return -EBUSY;
 256         dev->stream_sliced_vbi_cap = false;
 257         dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE;
 258         return 0;
 259 }
 260
 261 void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set)
 262 {
 263         vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36;
 264         vbi->service_set = service_set;
 265         memset(vbi->service_lines, 0, sizeof(vbi->service_lines));
 266         memset(vbi->reserved, 0, sizeof(vbi->reserved));
 267
 268         if (vbi->service_set == 0)
 269                 return;
 270
 271         if (vbi->service_set & V4L2_SLICED_CAPTION_525) {
 272                 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 273                 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 274         }
 275         if (vbi->service_set & V4L2_SLICED_WSS_625) {
 276                 unsigned i;
 277
 278                 for (i = 7; i <= 18; i++)
 279                         vbi->service_lines[0][i] =
 280                         vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
 281                 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625;
 282         }
 283 }
 284
 285 int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 286 {
 287         struct vivid_dev *dev = video_drvdata(file);
 288         struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
 289
 290         if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
 291                 return -EINVAL;
 292
 293         vivid_fill_service_lines(vbi, dev->service_set_cap);
 294         return 0;
 295 }
 296
 297 int vidioc_try_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         bool is_60hz = dev->std_cap & V4L2_STD_525_60;
 302         u32 service_set = vbi->service_set;
 303
 304         if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap)
 305                 return -EINVAL;
 306
 307         service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 :
 308                                  V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 309         vivid_fill_service_lines(vbi, service_set);
 310         return 0;
 311 }
 312
 313 int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt)
 314 {
 315         struct vivid_dev *dev = video_drvdata(file);
 316         struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced;
 317         int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt);
 318
 319         if (ret)
 320                 return ret;
 321         if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q))
 322                 return -EBUSY;
 323         dev->service_set_cap = vbi->service_set;
 324         dev->stream_sliced_vbi_cap = true;
 325         dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
 326         return 0;
 327 }
 328
 329 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap)
 330 {
 331         struct vivid_dev *dev = video_drvdata(file);
 332         struct video_device *vdev = video_devdata(file);
 333         bool is_60hz;
 334
 335         if (vdev->vfl_dir == VFL_DIR_RX) {
 336                 is_60hz = dev->std_cap & V4L2_STD_525_60;
 337                 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap ||
 338                     cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
 339                         return -EINVAL;
 340         } else {
 341                 is_60hz = dev->std_out & V4L2_STD_525_60;
 342                 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out ||
 343                     cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT)
 344                         return -EINVAL;
 345         }
 346
 347         cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 :
 348                                      V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B;
 349         if (is_60hz) {
 350                 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 351                 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 352         } else {
 353                 unsigned i;
 354
 355                 for (i = 7; i <= 18; i++)
 356                         cap->service_lines[0][i] =
 357                         cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B;
 358                 cap->service_lines[0][23] = V4L2_SLICED_WSS_625;
 359         }
 360         return 0;
 361 }