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 18static 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 66static 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 82void 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 101void 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 122static 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 144static 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 172static 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 185static 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 */ 211static 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 219static 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 226const 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 237int 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 250int 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 (f->type != V4L2_BUF_TYPE_VBI_CAPTURE && vb2_is_busy(&dev->vb_vbi_cap_q)) 259 return -EBUSY; 260 return 0; 261} 262 263void vivid_fill_service_lines(struct v4l2_sliced_vbi_format *vbi, u32 service_set) 264{ 265 vbi->io_size = sizeof(struct v4l2_sliced_vbi_data) * 36; 266 vbi->service_set = service_set; 267 memset(vbi->service_lines, 0, sizeof(vbi->service_lines)); 268 memset(vbi->reserved, 0, sizeof(vbi->reserved)); 269 270 if (vbi->service_set == 0) 271 return; 272 273 if (vbi->service_set & V4L2_SLICED_CAPTION_525) { 274 vbi->service_lines[0][21] = V4L2_SLICED_CAPTION_525; 275 vbi->service_lines[1][21] = V4L2_SLICED_CAPTION_525; 276 } 277 if (vbi->service_set & V4L2_SLICED_WSS_625) { 278 unsigned i; 279 280 for (i = 7; i <= 18; i++) 281 vbi->service_lines[0][i] = 282 vbi->service_lines[1][i] = V4L2_SLICED_TELETEXT_B; 283 vbi->service_lines[0][23] = V4L2_SLICED_WSS_625; 284 } 285} 286 287int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) 288{ 289 struct vivid_dev *dev = video_drvdata(file); 290 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; 291 292 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) 293 return -EINVAL; 294 295 vivid_fill_service_lines(vbi, dev->service_set_cap); 296 return 0; 297} 298 299int vidioc_try_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) 300{ 301 struct vivid_dev *dev = video_drvdata(file); 302 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; 303 bool is_60hz = dev->std_cap[dev->input] & V4L2_STD_525_60; 304 u32 service_set = vbi->service_set; 305 306 if (!vivid_is_sdtv_cap(dev) || !dev->has_sliced_vbi_cap) 307 return -EINVAL; 308 309 service_set &= is_60hz ? V4L2_SLICED_CAPTION_525 : 310 V4L2_SLICED_WSS_625 | V4L2_SLICED_TELETEXT_B; 311 vivid_fill_service_lines(vbi, service_set); 312 return 0; 313} 314 315int vidioc_s_fmt_sliced_vbi_cap(struct file *file, void *fh, struct v4l2_format *fmt) 316{ 317 struct vivid_dev *dev = video_drvdata(file); 318 struct v4l2_sliced_vbi_format *vbi = &fmt->fmt.sliced; 319 int ret = vidioc_try_fmt_sliced_vbi_cap(file, fh, fmt); 320 321 if (ret) 322 return ret; 323 if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE && vb2_is_busy(&dev->vb_vbi_cap_q)) 324 return -EBUSY; 325 dev->service_set_cap = vbi->service_set; 326 return 0; 327} 328 329int 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[dev->input] & 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} 362