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[dev->input] & 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[dev->input] & 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[dev->input])) 97 vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf); 98 } 99 100 101 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev, 102 struct vivid_buffer *buf) 103 { 104 struct v4l2_sliced_vbi_data *vbuf = 105 vb2_plane_vaddr(&buf->vb.vb2_buf, 0); 106 107 buf->vb.sequence = dev->vbi_cap_seq_count; 108 if (dev->field_cap == V4L2_FIELD_ALTERNATE) 109 buf->vb.sequence /= 2; 110 111 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence); 112 113 memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0)); 114 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) { 115 unsigned i; 116 117 for (i = 0; i < 25; i++) 118 vbuf[i] = dev->vbi_gen.data[i]; 119 } 120 } 121 122 static int vbi_cap_queue_setup(struct vb2_queue *vq, 123 unsigned *nbuffers, unsigned *nplanes, 124 unsigned sizes[], struct device *alloc_devs[]) 125 { 126 struct vivid_dev *dev = vb2_get_drv_priv(vq); 127 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 128 unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? 129 36 * sizeof(struct v4l2_sliced_vbi_data) : 130 1440 * 2 * (is_60hz ? 12 : 18); 131 132 if (!vivid_is_sdtv_cap(dev)) 133 return -EINVAL; 134 135 sizes[0] = size; 136 137 if (vq->num_buffers + *nbuffers < 2) 138 *nbuffers = 2 - vq->num_buffers; 139 140 *nplanes = 1; 141 return 0; 142 } 143 144 static int vbi_cap_buf_prepare(struct vb2_buffer *vb) 145 { 146 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 147 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 148 unsigned size = vb->vb2_queue->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? 149 36 * sizeof(struct v4l2_sliced_vbi_data) : 150 1440 * 2 * (is_60hz ? 12 : 18); 151 152 dprintk(dev, 1, "%s\n", __func__); 153 154 if (dev->buf_prepare_error) { 155 /* 156 * Error injection: test what happens if buf_prepare() returns 157 * an error. 158 */ 159 dev->buf_prepare_error = false; 160 return -EINVAL; 161 } 162 if (vb2_plane_size(vb, 0) < size) { 163 dprintk(dev, 1, "%s data will not fit into plane (%lu < %u)\n", 164 __func__, vb2_plane_size(vb, 0), size); 165 return -EINVAL; 166 } 167 vb2_set_plane_payload(vb, 0, size); 168 169 return 0; 170 } 171 172 static void vbi_cap_buf_queue(struct vb2_buffer *vb) 173 { 174 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 175 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 176 struct vivid_buffer *buf = container_of(vbuf, struct vivid_buffer, vb); 177 178 dprintk(dev, 1, "%s\n", __func__); 179 180 spin_lock(&dev->slock); 181 list_add_tail(&buf->list, &dev->vbi_cap_active); 182 spin_unlock(&dev->slock); 183 } 184 185 static int vbi_cap_start_streaming(struct vb2_queue *vq, unsigned count) 186 { 187 struct vivid_dev *dev = vb2_get_drv_priv(vq); 188 int err; 189 190 dprintk(dev, 1, "%s\n", __func__); 191 dev->vbi_cap_seq_count = 0; 192 if (dev->start_streaming_error) { 193 dev->start_streaming_error = false; 194 err = -EINVAL; 195 } else { 196 err = vivid_start_generating_vid_cap(dev, &dev->vbi_cap_streaming); 197 } 198 if (err) { 199 struct vivid_buffer *buf, *tmp; 200 201 list_for_each_entry_safe(buf, tmp, &dev->vbi_cap_active, list) { 202 list_del(&buf->list); 203 vb2_buffer_done(&buf->vb.vb2_buf, 204 VB2_BUF_STATE_QUEUED); 205 } 206 } 207 return err; 208 } 209 210 /* abort streaming and wait for last buffer */ 211 static void vbi_cap_stop_streaming(struct vb2_queue *vq) 212 { 213 struct vivid_dev *dev = vb2_get_drv_priv(vq); 214 215 dprintk(dev, 1, "%s\n", __func__); 216 vivid_stop_generating_vid_cap(dev, &dev->vbi_cap_streaming); 217 } 218 219 static void vbi_cap_buf_request_complete(struct vb2_buffer *vb) 220 { 221 struct vivid_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 222 223 v4l2_ctrl_request_complete(vb->req_obj.req, &dev->ctrl_hdl_vbi_cap); 224 } 225 226 const struct vb2_ops vivid_vbi_cap_qops = { 227 .queue_setup = vbi_cap_queue_setup, 228 .buf_prepare = vbi_cap_buf_prepare, 229 .buf_queue = vbi_cap_buf_queue, 230 .start_streaming = vbi_cap_start_streaming, 231 .stop_streaming = vbi_cap_stop_streaming, 232 .buf_request_complete = vbi_cap_buf_request_complete, 233 .wait_prepare = vb2_ops_wait_prepare, 234 .wait_finish = vb2_ops_wait_finish, 235 }; 236 237 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, 238 struct v4l2_format *f) 239 { 240 struct vivid_dev *dev = video_drvdata(file); 241 struct v4l2_vbi_format *vbi = &f->fmt.vbi; 242 243 if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap) 244 return -EINVAL; 245 246 vivid_g_fmt_vbi_cap(dev, vbi); 247 return 0; 248 } 249 250 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, 251 struct v4l2_format *f) 252 { 253 struct vivid_dev *dev = video_drvdata(file); 254 int ret = vidioc_g_fmt_vbi_cap(file, priv, f); 255 256 if (ret) 257 return ret; 258 if (dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q)) 259 return -EBUSY; 260 dev->stream_sliced_vbi_cap = false; 261 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_VBI_CAPTURE; 262 return 0; 263 } 264 265 void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set) 266 { 267 vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36; 268 vbi->service_set = service_set; 269 memset(vbi->service_lines, 0, sizeof(vbi->service_lines)); 270 memset(vbi->reserved, 0, sizeof(vbi->reserved)); 271 272 if (vbi->service_set == 0) 273 return; 274 275 if (vbi->service_set & V4L2_SLICED_CAPTION_525) { 276 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525; 277 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525; 278 } 279 if (vbi->service_set & V4L2_SLICED_WSS_625) { 280 unsigned i; 281 282 for (i = 7; i <= 18; i++) 283 vbi->service_lines[0][i] = 284 vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B; 285 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625; 286 } 287 } 288 289 int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) 290 { 291 struct vivid_dev *dev = video_drvdata(file); 292 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; 293 294 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) 295 return -EINVAL; 296 297 vivid_fill_service_lines(vbi, dev->service_set_cap); 298 return 0; 299 } 300 301 int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) 302 { 303 struct vivid_dev *dev = video_drvdata(file); 304 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; 305 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 306 u32 service_set = vbi->service_set; 307 308 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) 309 return -EINVAL; 310 311 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 : 312 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; 313 vivid_fill_service_lines(vbi, service_set); 314 return 0; 315 } 316 317 int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) 318 { 319 struct vivid_dev *dev = video_drvdata(file); 320 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; 321 int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt); 322 323 if (ret) 324 return ret; 325 if (!dev->stream_sliced_vbi_cap && vb2_is_busy(&dev->vb_vbi_cap_q)) 326 return -EBUSY; 327 dev->service_set_cap = vbi->service_set; 328 dev->stream_sliced_vbi_cap = true; 329 dev->vbi_cap_dev.queue->type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE; 330 return 0; 331 } 332 333 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap) 334 { 335 struct vivid_dev *dev = video_drvdata(file); 336 struct video_device *vdev = video_devdata(file); 337 bool is_60hz; 338 339 if (vdev->vfl_dir == VFL_DIR_RX) { 340 is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 341 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap || 342 cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) 343 return -EINVAL; 344 } else { 345 is_60hz = dev->std_out & V4L2_STD_525_60; 346 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out || 347 cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) 348 return -EINVAL; 349 } 350 351 cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 : 352 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; 353 if (is_60hz) { 354 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525; 355 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525; 356 } else { 357 unsigned i; 358 359 for (i = 7; i <= 18; i++) 360 cap->service_lines[0][i] = 361 cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B; 362 cap->service_lines[0][23] = V4L2_SLICED_WSS_625; 363 } 364 return 0; 365 } 366