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 #include "vivid-vid-common.h" 18 19 static void vivid_sliced_vbi_cap_fill(struct vivid_dev *dev, unsigned seqnr) 20 { 21 struct vivid_vbi_gen_data *vbi_gen = &dev->vbi_gen; 22 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 23 24 vivid_vbi_gen_sliced(vbi_gen, is_60hz, seqnr); 25 26 if (!is_60hz) { 27 if (vivid_vid_can_loop(dev)) { 28 if (dev->vbi_out_have_wss) { 29 vbi_gen->data[12].data[0] = dev->vbi_out_wss[0]; 30 vbi_gen->data[12].data[1] = dev->vbi_out_wss[1]; 31 } else { 32 vbi_gen->data[12].id = 0; 33 } 34 } else { 35 switch (tpg_g_video_aspect(&dev->tpg)) { 36 case TPG_VIDEO_ASPECT_14X9_CENTRE: 37 vbi_gen->data[12].data[0] = 0x01; 38 break; 39 case TPG_VIDEO_ASPECT_16X9_CENTRE: 40 vbi_gen->data[12].data[0] = 0x0b; 41 break; 42 case TPG_VIDEO_ASPECT_16X9_ANAMORPHIC: 43 vbi_gen->data[12].data[0] = 0x07; 44 break; 45 case TPG_VIDEO_ASPECT_4X3: 46 default: 47 vbi_gen->data[12].data[0] = 0x08; 48 break; 49 } 50 } 51 } else if (vivid_vid_can_loop(dev) && is_60hz) { 52 if (dev->vbi_out_have_cc[0]) { 53 vbi_gen->data[0].data[0] = dev->vbi_out_cc[0][0]; 54 vbi_gen->data[0].data[1] = dev->vbi_out_cc[0][1]; 55 } else { 56 vbi_gen->data[0].id = 0; 57 } 58 if (dev->vbi_out_have_cc[1]) { 59 vbi_gen->data[1].data[0] = dev->vbi_out_cc[1][0]; 60 vbi_gen->data[1].data[1] = dev->vbi_out_cc[1][1]; 61 } else { 62 vbi_gen->data[1].id = 0; 63 } 64 } 65 } 66 67 static void vivid_g_fmt_vbi_cap(struct vivid_dev *dev, struct v4l2_vbi_format *vbi) 68 { 69 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 70 71 vbi->sampling_rate = 27000000; 72 vbi->offset = 24; 73 vbi->samples_per_line = 1440; 74 vbi->sample_format = V4L2_PIX_FMT_GREY; 75 vbi->start[0] = is_60hz ? V4L2_VBI_ITU_525_F1_START + 9 : V4L2_VBI_ITU_625_F1_START + 5; 76 vbi->start[1] = is_60hz ? V4L2_VBI_ITU_525_F2_START + 9 : V4L2_VBI_ITU_625_F2_START + 5; 77 vbi->count[0] = vbi->count[1] = is_60hz ? 12 : 18; 78 vbi->flags = dev->vbi_cap_interlaced ? V4L2_VBI_INTERLACED : 0; 79 vbi->reserved[0] = 0; 80 vbi->reserved[1] = 0; 81 } 82 83 void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf) 84 { 85 struct v4l2_vbi_format vbi; 86 u8 *vbuf = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); 87 88 vivid_g_fmt_vbi_cap(dev, &vbi); 89 buf->vb.sequence = dev->vbi_cap_seq_count; 90 if (dev->field_cap == V4L2_FIELD_ALTERNATE) 91 buf->vb.sequence /= 2; 92 93 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence); 94 95 memset(vbuf, 0x10, vb2_plane_size(&buf->vb.vb2_buf, 0)); 96 97 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) 98 vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf); 99 } 100 101 102 void vivid_sliced_vbi_cap_process(struct vivid_dev *dev, 103 struct vivid_buffer *buf) 104 { 105 struct v4l2_sliced_vbi_data *vbuf = 106 vb2_plane_vaddr(&buf->vb.vb2_buf, 0); 107 108 buf->vb.sequence = dev->vbi_cap_seq_count; 109 if (dev->field_cap == V4L2_FIELD_ALTERNATE) 110 buf->vb.sequence /= 2; 111 112 vivid_sliced_vbi_cap_fill(dev, buf->vb.sequence); 113 114 memset(vbuf, 0, vb2_plane_size(&buf->vb.vb2_buf, 0)); 115 if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode[dev->input])) { 116 unsigned i; 117 118 for (i = 0; i < 25; i++) 119 vbuf[i] = dev->vbi_gen.data[i]; 120 } 121 } 122 123 static int vbi_cap_queue_setup(struct vb2_queue *vq, 124 unsigned *nbuffers, unsigned *nplanes, 125 unsigned sizes[], struct device *alloc_devs[]) 126 { 127 struct vivid_dev *dev = vb2_get_drv_priv(vq); 128 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 129 unsigned size = vq->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE ? 130 36 * sizeof(struct v4l2_sliced_vbi_data) : 131 1440 * 2 * (is_60hz ? 12 : 18); 132 133 if (!vivid_is_sdtv_cap(dev)) 134 return -EINVAL; 135 136 if (*nplanes) 137 return sizes[0] < size ? -EINVAL : 0; 138 sizes[0] = size; 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 }; 234 235 int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, 236 struct v4l2_format *f) 237 { 238 struct vivid_dev *dev = video_drvdata(file); 239 struct v4l2_vbi_format *vbi = &f->fmt.vbi; 240 241 if (!vivid_is_sdtv_cap(dev) || !dev->has_raw_vbi_cap) 242 return -EINVAL; 243 244 vivid_g_fmt_vbi_cap(dev, vbi); 245 return 0; 246 } 247 248 int vidioc_s_fmt_vbi_cap(struct file *file, void *priv, 249 struct v4l2_format *f) 250 { 251 struct vivid_dev *dev = video_drvdata(file); 252 int ret = vidioc_g_fmt_vbi_cap(file, priv, f); 253 254 if (ret) 255 return ret; 256 if (f->type != V4L2_BUF_TYPE_VBI_CAPTURE && vb2_is_busy(&dev->vb_vbi_cap_q)) 257 return -EBUSY; 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[dev->input] & 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 (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE && vb2_is_busy(&dev->vb_vbi_cap_q)) 322 return -EBUSY; 323 dev->service_set_cap = vbi->service_set; 324 return 0; 325 } 326 327 int vidioc_g_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_sliced_vbi_cap *cap) 328 { 329 struct vivid_dev *dev = video_drvdata(file); 330 struct video_device *vdev = video_devdata(file); 331 bool is_60hz; 332 333 if (vdev->vfl_dir == VFL_DIR_RX) { 334 is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 335 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap || 336 cap->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) 337 return -EINVAL; 338 } else { 339 is_60hz = dev->std_out & V4L2_STD_525_60; 340 if (!vivid_is_svid_out(dev) || !dev->has_sliced_vbi_out || 341 cap->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) 342 return -EINVAL; 343 } 344 345 cap->service_set = is_60hz ? V4L2_SLICED_CAPTION_525 : 346 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; 347 if (is_60hz) { 348 cap->service_lines[0][21] = V4L2_SLICED_CAPTION_525; 349 cap->service_lines[1][21] = V4L2_SLICED_CAPTION_525; 350 } else { 351 unsigned i; 352 353 for (i = 7; i <= 18; i++) 354 cap->service_lines[0][i] = 355 cap->service_lines[1][i] = V4L2_SLICED_TELETEXT_B; 356 cap->service_lines[0][23] = V4L2_SLICED_WSS_625; 357 } 358 return 0; 359 } 360