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