Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <media/saa7146_vv.h> |
| 2 | |
| 3 | static int max_memory = 32; |
| 4 | |
| 5 | module_param(max_memory, int, 0644); |
| 6 | MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)"); |
| 7 | |
| 8 | #define IS_CAPTURE_ACTIVE(fh) \ |
| 9 | (((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh)) |
| 10 | |
| 11 | #define IS_OVERLAY_ACTIVE(fh) \ |
| 12 | (((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh)) |
| 13 | |
| 14 | /* format descriptions for capture and preview */ |
| 15 | static struct saa7146_format formats[] = { |
| 16 | { |
| 17 | .name = "RGB-8 (3-3-2)", |
| 18 | .pixelformat = V4L2_PIX_FMT_RGB332, |
| 19 | .trans = RGB08_COMPOSED, |
| 20 | .depth = 8, |
| 21 | .flags = 0, |
| 22 | }, { |
| 23 | .name = "RGB-16 (5/B-6/G-5/R)", |
| 24 | .pixelformat = V4L2_PIX_FMT_RGB565, |
| 25 | .trans = RGB16_COMPOSED, |
| 26 | .depth = 16, |
| 27 | .flags = 0, |
| 28 | }, { |
| 29 | .name = "RGB-24 (B-G-R)", |
| 30 | .pixelformat = V4L2_PIX_FMT_BGR24, |
| 31 | .trans = RGB24_COMPOSED, |
| 32 | .depth = 24, |
| 33 | .flags = 0, |
| 34 | }, { |
| 35 | .name = "RGB-32 (B-G-R)", |
| 36 | .pixelformat = V4L2_PIX_FMT_BGR32, |
| 37 | .trans = RGB32_COMPOSED, |
| 38 | .depth = 32, |
| 39 | .flags = 0, |
| 40 | }, { |
| 41 | .name = "RGB-32 (R-G-B)", |
| 42 | .pixelformat = V4L2_PIX_FMT_RGB32, |
| 43 | .trans = RGB32_COMPOSED, |
| 44 | .depth = 32, |
| 45 | .flags = 0, |
| 46 | .swap = 0x2, |
| 47 | }, { |
| 48 | .name = "Greyscale-8", |
| 49 | .pixelformat = V4L2_PIX_FMT_GREY, |
| 50 | .trans = Y8, |
| 51 | .depth = 8, |
| 52 | .flags = 0, |
| 53 | }, { |
| 54 | .name = "YUV 4:2:2 planar (Y-Cb-Cr)", |
| 55 | .pixelformat = V4L2_PIX_FMT_YUV422P, |
| 56 | .trans = YUV422_DECOMPOSED, |
| 57 | .depth = 16, |
| 58 | .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, |
| 59 | }, { |
| 60 | .name = "YVU 4:2:0 planar (Y-Cb-Cr)", |
| 61 | .pixelformat = V4L2_PIX_FMT_YVU420, |
| 62 | .trans = YUV420_DECOMPOSED, |
| 63 | .depth = 12, |
| 64 | .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, |
| 65 | }, { |
| 66 | .name = "YUV 4:2:0 planar (Y-Cb-Cr)", |
| 67 | .pixelformat = V4L2_PIX_FMT_YUV420, |
| 68 | .trans = YUV420_DECOMPOSED, |
| 69 | .depth = 12, |
| 70 | .flags = FORMAT_IS_PLANAR, |
| 71 | }, { |
| 72 | .name = "YUV 4:2:2 (U-Y-V-Y)", |
| 73 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 74 | .trans = YUV422_COMPOSED, |
| 75 | .depth = 16, |
| 76 | .flags = 0, |
| 77 | } |
| 78 | }; |
| 79 | |
| 80 | /* unfortunately, the saa7146 contains a bug which prevents it from doing on-the-fly byte swaps. |
| 81 | due to this, it's impossible to provide additional *packed* formats, which are simply byte swapped |
| 82 | (like V4L2_PIX_FMT_YUYV) ... 8-( */ |
| 83 | |
| 84 | static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format); |
| 85 | |
| 86 | struct saa7146_format* format_by_fourcc(struct saa7146_dev *dev, int fourcc) |
| 87 | { |
| 88 | int i, j = NUM_FORMATS; |
| 89 | |
| 90 | for (i = 0; i < j; i++) { |
| 91 | if (formats[i].pixelformat == fourcc) { |
| 92 | return formats+i; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | DEB_D(("unknown pixelformat:'%4.4s'\n",(char *)&fourcc)); |
| 97 | return NULL; |
| 98 | } |
| 99 | |
| 100 | static int g_fmt(struct saa7146_fh *fh, struct v4l2_format *f) |
| 101 | { |
| 102 | struct saa7146_dev *dev = fh->dev; |
| 103 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 104 | |
| 105 | switch (f->type) { |
| 106 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| 107 | f->fmt.pix = fh->video_fmt; |
| 108 | return 0; |
| 109 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| 110 | f->fmt.win = fh->ov.win; |
| 111 | return 0; |
| 112 | case V4L2_BUF_TYPE_VBI_CAPTURE: |
| 113 | { |
| 114 | f->fmt.vbi = fh->vbi_fmt; |
| 115 | return 0; |
| 116 | } |
| 117 | default: |
| 118 | DEB_D(("invalid format type '%d'.\n",f->type)); |
| 119 | return -EINVAL; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | static int try_win(struct saa7146_dev *dev, struct v4l2_window *win) |
| 124 | { |
| 125 | struct saa7146_vv *vv = dev->vv_data; |
| 126 | enum v4l2_field field; |
| 127 | int maxw, maxh; |
| 128 | |
| 129 | DEB_EE(("dev:%p\n",dev)); |
| 130 | |
| 131 | if (NULL == vv->ov_fb.base) { |
| 132 | DEB_D(("no fb base set.\n")); |
| 133 | return -EINVAL; |
| 134 | } |
| 135 | if (NULL == vv->ov_fmt) { |
| 136 | DEB_D(("no fb fmt set.\n")); |
| 137 | return -EINVAL; |
| 138 | } |
| 139 | if (win->w.width < 48 || win->w.height < 32) { |
| 140 | DEB_D(("min width/height. (%d,%d)\n",win->w.width,win->w.height)); |
| 141 | return -EINVAL; |
| 142 | } |
| 143 | if (win->clipcount > 16) { |
| 144 | DEB_D(("clipcount too big.\n")); |
| 145 | return -EINVAL; |
| 146 | } |
| 147 | |
| 148 | field = win->field; |
| 149 | maxw = vv->standard->h_max_out; |
| 150 | maxh = vv->standard->v_max_out; |
| 151 | |
| 152 | if (V4L2_FIELD_ANY == field) { |
| 153 | field = (win->w.height > maxh/2) |
| 154 | ? V4L2_FIELD_INTERLACED |
| 155 | : V4L2_FIELD_TOP; |
| 156 | } |
| 157 | switch (field) { |
| 158 | case V4L2_FIELD_TOP: |
| 159 | case V4L2_FIELD_BOTTOM: |
| 160 | case V4L2_FIELD_ALTERNATE: |
| 161 | maxh = maxh / 2; |
| 162 | break; |
| 163 | case V4L2_FIELD_INTERLACED: |
| 164 | break; |
| 165 | default: { |
| 166 | DEB_D(("no known field mode '%d'.\n",field)); |
| 167 | return -EINVAL; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | win->field = field; |
| 172 | if (win->w.width > maxw) |
| 173 | win->w.width = maxw; |
| 174 | if (win->w.height > maxh) |
| 175 | win->w.height = maxh; |
| 176 | |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static int try_fmt(struct saa7146_fh *fh, struct v4l2_format *f) |
| 181 | { |
| 182 | struct saa7146_dev *dev = fh->dev; |
| 183 | struct saa7146_vv *vv = dev->vv_data; |
| 184 | int err; |
| 185 | |
| 186 | switch (f->type) { |
| 187 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| 188 | { |
| 189 | struct saa7146_format *fmt; |
| 190 | enum v4l2_field field; |
| 191 | int maxw, maxh; |
| 192 | int calc_bpl; |
| 193 | |
| 194 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n",dev,fh)); |
| 195 | |
| 196 | fmt = format_by_fourcc(dev,f->fmt.pix.pixelformat); |
| 197 | if (NULL == fmt) { |
| 198 | return -EINVAL; |
| 199 | } |
| 200 | |
| 201 | field = f->fmt.pix.field; |
| 202 | maxw = vv->standard->h_max_out; |
| 203 | maxh = vv->standard->v_max_out; |
| 204 | |
| 205 | if (V4L2_FIELD_ANY == field) { |
| 206 | field = (f->fmt.pix.height > maxh/2) |
| 207 | ? V4L2_FIELD_INTERLACED |
| 208 | : V4L2_FIELD_BOTTOM; |
| 209 | } |
| 210 | switch (field) { |
| 211 | case V4L2_FIELD_ALTERNATE: { |
| 212 | vv->last_field = V4L2_FIELD_TOP; |
| 213 | maxh = maxh / 2; |
| 214 | break; |
| 215 | } |
| 216 | case V4L2_FIELD_TOP: |
| 217 | case V4L2_FIELD_BOTTOM: |
| 218 | vv->last_field = V4L2_FIELD_INTERLACED; |
| 219 | maxh = maxh / 2; |
| 220 | break; |
| 221 | case V4L2_FIELD_INTERLACED: |
| 222 | vv->last_field = V4L2_FIELD_INTERLACED; |
| 223 | break; |
| 224 | default: { |
| 225 | DEB_D(("no known field mode '%d'.\n",field)); |
| 226 | return -EINVAL; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | f->fmt.pix.field = field; |
| 231 | if (f->fmt.pix.width > maxw) |
| 232 | f->fmt.pix.width = maxw; |
| 233 | if (f->fmt.pix.height > maxh) |
| 234 | f->fmt.pix.height = maxh; |
| 235 | |
| 236 | calc_bpl = (f->fmt.pix.width * fmt->depth)/8; |
| 237 | |
| 238 | if (f->fmt.pix.bytesperline < calc_bpl) |
| 239 | f->fmt.pix.bytesperline = calc_bpl; |
| 240 | |
| 241 | if (f->fmt.pix.bytesperline > (2*PAGE_SIZE * fmt->depth)/8) /* arbitrary constraint */ |
| 242 | f->fmt.pix.bytesperline = calc_bpl; |
| 243 | |
| 244 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; |
| 245 | DEB_D(("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n",f->fmt.pix.width,f->fmt.pix.height,f->fmt.pix.bytesperline,f->fmt.pix.sizeimage)); |
| 246 | |
| 247 | return 0; |
| 248 | } |
| 249 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| 250 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n",dev,fh)); |
| 251 | err = try_win(dev,&f->fmt.win); |
| 252 | if (0 != err) { |
| 253 | return err; |
| 254 | } |
| 255 | return 0; |
| 256 | default: |
| 257 | DEB_EE(("unknown format type '%d'\n",f->type)); |
| 258 | return -EINVAL; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | int saa7146_start_preview(struct saa7146_fh *fh) |
| 263 | { |
| 264 | struct saa7146_dev *dev = fh->dev; |
| 265 | struct saa7146_vv *vv = dev->vv_data; |
| 266 | int ret = 0, err = 0; |
| 267 | |
| 268 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 269 | |
| 270 | /* check if we have overlay informations */ |
| 271 | if( NULL == fh->ov.fh ) { |
| 272 | DEB_D(("no overlay data available. try S_FMT first.\n")); |
| 273 | return -EAGAIN; |
| 274 | } |
| 275 | |
| 276 | /* check if streaming capture is running */ |
| 277 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 278 | DEB_D(("streaming capture is active.\n")); |
| 279 | return -EBUSY; |
| 280 | } |
| 281 | |
| 282 | /* check if overlay is running */ |
| 283 | if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 284 | if (vv->video_fh == fh) { |
| 285 | DEB_D(("overlay is already active.\n")); |
| 286 | return 0; |
| 287 | } |
| 288 | DEB_D(("overlay is already active in another open.\n")); |
| 289 | return -EBUSY; |
| 290 | } |
| 291 | |
| 292 | if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) { |
| 293 | DEB_D(("cannot get necessary overlay resources\n")); |
| 294 | return -EBUSY; |
| 295 | } |
| 296 | |
| 297 | err = try_win(dev,&fh->ov.win); |
| 298 | if (0 != err) { |
| 299 | saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); |
| 300 | return -EBUSY; |
| 301 | } |
| 302 | |
| 303 | vv->ov_data = &fh->ov; |
| 304 | |
| 305 | DEB_D(("%dx%d+%d+%d %s field=%s\n", |
| 306 | fh->ov.win.w.width,fh->ov.win.w.height, |
| 307 | fh->ov.win.w.left,fh->ov.win.w.top, |
| 308 | vv->ov_fmt->name,v4l2_field_names[fh->ov.win.field])); |
| 309 | |
| 310 | if (0 != (ret = saa7146_enable_overlay(fh))) { |
| 311 | DEB_D(("enabling overlay failed: %d\n",ret)); |
| 312 | saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); |
| 313 | return ret; |
| 314 | } |
| 315 | |
| 316 | vv->video_status = STATUS_OVERLAY; |
| 317 | vv->video_fh = fh; |
| 318 | |
| 319 | return 0; |
| 320 | } |
| 321 | |
| 322 | int saa7146_stop_preview(struct saa7146_fh *fh) |
| 323 | { |
| 324 | struct saa7146_dev *dev = fh->dev; |
| 325 | struct saa7146_vv *vv = dev->vv_data; |
| 326 | |
| 327 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 328 | |
| 329 | /* check if streaming capture is running */ |
| 330 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 331 | DEB_D(("streaming capture is active.\n")); |
| 332 | return -EBUSY; |
| 333 | } |
| 334 | |
| 335 | /* check if overlay is running at all */ |
| 336 | if ((vv->video_status & STATUS_OVERLAY) == 0) { |
| 337 | DEB_D(("no active overlay.\n")); |
| 338 | return 0; |
| 339 | } |
| 340 | |
| 341 | if (vv->video_fh != fh) { |
| 342 | DEB_D(("overlay is active, but in another open.\n")); |
| 343 | return -EBUSY; |
| 344 | } |
| 345 | |
| 346 | vv->video_status = 0; |
| 347 | vv->video_fh = NULL; |
| 348 | |
| 349 | saa7146_disable_overlay(fh); |
| 350 | |
| 351 | saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); |
| 352 | |
| 353 | return 0; |
| 354 | } |
| 355 | |
| 356 | static int s_fmt(struct saa7146_fh *fh, struct v4l2_format *f) |
| 357 | { |
| 358 | struct saa7146_dev *dev = fh->dev; |
| 359 | struct saa7146_vv *vv = dev->vv_data; |
| 360 | |
| 361 | int err; |
| 362 | |
| 363 | switch (f->type) { |
| 364 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| 365 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n",dev,fh)); |
| 366 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 367 | DEB_EE(("streaming capture is active\n")); |
| 368 | return -EBUSY; |
| 369 | } |
| 370 | err = try_fmt(fh,f); |
| 371 | if (0 != err) |
| 372 | return err; |
| 373 | fh->video_fmt = f->fmt.pix; |
| 374 | DEB_EE(("set to pixelformat '%4.4s'\n",(char *)&fh->video_fmt.pixelformat)); |
| 375 | return 0; |
| 376 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: |
| 377 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n",dev,fh)); |
| 378 | err = try_win(dev,&f->fmt.win); |
| 379 | if (0 != err) |
| 380 | return err; |
| 381 | down(&dev->lock); |
| 382 | fh->ov.win = f->fmt.win; |
| 383 | fh->ov.nclips = f->fmt.win.clipcount; |
| 384 | if (fh->ov.nclips > 16) |
| 385 | fh->ov.nclips = 16; |
| 386 | if (copy_from_user(fh->ov.clips,f->fmt.win.clips,sizeof(struct v4l2_clip)*fh->ov.nclips)) { |
| 387 | up(&dev->lock); |
| 388 | return -EFAULT; |
| 389 | } |
| 390 | |
| 391 | /* fh->ov.fh is used to indicate that we have valid overlay informations, too */ |
| 392 | fh->ov.fh = fh; |
| 393 | |
| 394 | up(&dev->lock); |
| 395 | |
| 396 | /* check if our current overlay is active */ |
| 397 | if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 398 | saa7146_stop_preview(fh); |
| 399 | saa7146_start_preview(fh); |
| 400 | } |
| 401 | return 0; |
| 402 | default: |
| 403 | DEB_D(("unknown format type '%d'\n",f->type)); |
| 404 | return -EINVAL; |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | /********************************************************************************/ |
| 409 | /* device controls */ |
| 410 | |
| 411 | static struct v4l2_queryctrl controls[] = { |
| 412 | { |
| 413 | .id = V4L2_CID_BRIGHTNESS, |
| 414 | .name = "Brightness", |
| 415 | .minimum = 0, |
| 416 | .maximum = 255, |
| 417 | .step = 1, |
| 418 | .default_value = 128, |
| 419 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 420 | },{ |
| 421 | .id = V4L2_CID_CONTRAST, |
| 422 | .name = "Contrast", |
| 423 | .minimum = 0, |
| 424 | .maximum = 127, |
| 425 | .step = 1, |
| 426 | .default_value = 64, |
| 427 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 428 | },{ |
| 429 | .id = V4L2_CID_SATURATION, |
| 430 | .name = "Saturation", |
| 431 | .minimum = 0, |
| 432 | .maximum = 127, |
| 433 | .step = 1, |
| 434 | .default_value = 64, |
| 435 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 436 | },{ |
| 437 | .id = V4L2_CID_VFLIP, |
| 438 | .name = "Vertical flip", |
| 439 | .minimum = 0, |
| 440 | .maximum = 1, |
| 441 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 442 | },{ |
| 443 | .id = V4L2_CID_HFLIP, |
| 444 | .name = "Horizontal flip", |
| 445 | .minimum = 0, |
| 446 | .maximum = 1, |
| 447 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 448 | }, |
| 449 | }; |
| 450 | static int NUM_CONTROLS = sizeof(controls)/sizeof(struct v4l2_queryctrl); |
| 451 | |
| 452 | #define V4L2_CID_PRIVATE_LASTP1 (V4L2_CID_PRIVATE_BASE + 0) |
| 453 | |
| 454 | static struct v4l2_queryctrl* ctrl_by_id(int id) |
| 455 | { |
| 456 | int i; |
| 457 | |
| 458 | for (i = 0; i < NUM_CONTROLS; i++) |
| 459 | if (controls[i].id == id) |
| 460 | return controls+i; |
| 461 | return NULL; |
| 462 | } |
| 463 | |
| 464 | static int get_control(struct saa7146_fh *fh, struct v4l2_control *c) |
| 465 | { |
| 466 | struct saa7146_dev *dev = fh->dev; |
| 467 | struct saa7146_vv *vv = dev->vv_data; |
| 468 | |
| 469 | const struct v4l2_queryctrl* ctrl; |
| 470 | u32 value = 0; |
| 471 | |
| 472 | ctrl = ctrl_by_id(c->id); |
| 473 | if (NULL == ctrl) |
| 474 | return -EINVAL; |
| 475 | switch (c->id) { |
| 476 | case V4L2_CID_BRIGHTNESS: |
| 477 | value = saa7146_read(dev, BCS_CTRL); |
| 478 | c->value = 0xff & (value >> 24); |
| 479 | DEB_D(("V4L2_CID_BRIGHTNESS: %d\n",c->value)); |
| 480 | break; |
| 481 | case V4L2_CID_CONTRAST: |
| 482 | value = saa7146_read(dev, BCS_CTRL); |
| 483 | c->value = 0x7f & (value >> 16); |
| 484 | DEB_D(("V4L2_CID_CONTRAST: %d\n",c->value)); |
| 485 | break; |
| 486 | case V4L2_CID_SATURATION: |
| 487 | value = saa7146_read(dev, BCS_CTRL); |
| 488 | c->value = 0x7f & (value >> 0); |
| 489 | DEB_D(("V4L2_CID_SATURATION: %d\n",c->value)); |
| 490 | break; |
| 491 | case V4L2_CID_VFLIP: |
| 492 | c->value = vv->vflip; |
| 493 | DEB_D(("V4L2_CID_VFLIP: %d\n",c->value)); |
| 494 | break; |
| 495 | case V4L2_CID_HFLIP: |
| 496 | c->value = vv->hflip; |
| 497 | DEB_D(("V4L2_CID_HFLIP: %d\n",c->value)); |
| 498 | break; |
| 499 | default: |
| 500 | return -EINVAL; |
| 501 | } |
| 502 | |
| 503 | return 0; |
| 504 | } |
| 505 | |
| 506 | static int set_control(struct saa7146_fh *fh, struct v4l2_control *c) |
| 507 | { |
| 508 | struct saa7146_dev *dev = fh->dev; |
| 509 | struct saa7146_vv *vv = dev->vv_data; |
| 510 | |
| 511 | const struct v4l2_queryctrl* ctrl; |
| 512 | |
| 513 | ctrl = ctrl_by_id(c->id); |
| 514 | if (NULL == ctrl) { |
| 515 | DEB_D(("unknown control %d\n",c->id)); |
| 516 | return -EINVAL; |
| 517 | } |
| 518 | |
| 519 | down(&dev->lock); |
| 520 | |
| 521 | switch (ctrl->type) { |
| 522 | case V4L2_CTRL_TYPE_BOOLEAN: |
| 523 | case V4L2_CTRL_TYPE_MENU: |
| 524 | case V4L2_CTRL_TYPE_INTEGER: |
| 525 | if (c->value < ctrl->minimum) |
| 526 | c->value = ctrl->minimum; |
| 527 | if (c->value > ctrl->maximum) |
| 528 | c->value = ctrl->maximum; |
| 529 | break; |
| 530 | default: |
| 531 | /* nothing */; |
| 532 | }; |
| 533 | |
| 534 | switch (c->id) { |
| 535 | case V4L2_CID_BRIGHTNESS: { |
| 536 | u32 value = saa7146_read(dev, BCS_CTRL); |
| 537 | value &= 0x00ffffff; |
| 538 | value |= (c->value << 24); |
| 539 | saa7146_write(dev, BCS_CTRL, value); |
| 540 | saa7146_write(dev, MC2, MASK_22 | MASK_06 ); |
| 541 | break; |
| 542 | } |
| 543 | case V4L2_CID_CONTRAST: { |
| 544 | u32 value = saa7146_read(dev, BCS_CTRL); |
| 545 | value &= 0xff00ffff; |
| 546 | value |= (c->value << 16); |
| 547 | saa7146_write(dev, BCS_CTRL, value); |
| 548 | saa7146_write(dev, MC2, MASK_22 | MASK_06 ); |
| 549 | break; |
| 550 | } |
| 551 | case V4L2_CID_SATURATION: { |
| 552 | u32 value = saa7146_read(dev, BCS_CTRL); |
| 553 | value &= 0xffffff00; |
| 554 | value |= (c->value << 0); |
| 555 | saa7146_write(dev, BCS_CTRL, value); |
| 556 | saa7146_write(dev, MC2, MASK_22 | MASK_06 ); |
| 557 | break; |
| 558 | } |
| 559 | case V4L2_CID_HFLIP: |
| 560 | /* fixme: we can support changing VFLIP and HFLIP here... */ |
| 561 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 562 | DEB_D(("V4L2_CID_HFLIP while active capture.\n")); |
| 563 | up(&dev->lock); |
| 564 | return -EINVAL; |
| 565 | } |
| 566 | vv->hflip = c->value; |
| 567 | break; |
| 568 | case V4L2_CID_VFLIP: |
| 569 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 570 | DEB_D(("V4L2_CID_VFLIP while active capture.\n")); |
| 571 | up(&dev->lock); |
| 572 | return -EINVAL; |
| 573 | } |
| 574 | vv->vflip = c->value; |
| 575 | break; |
| 576 | default: { |
| 577 | return -EINVAL; |
| 578 | } |
| 579 | } |
| 580 | up(&dev->lock); |
| 581 | |
| 582 | if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 583 | saa7146_stop_preview(fh); |
| 584 | saa7146_start_preview(fh); |
| 585 | } |
| 586 | return 0; |
| 587 | } |
| 588 | |
| 589 | /********************************************************************************/ |
| 590 | /* common pagetable functions */ |
| 591 | |
| 592 | static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf) |
| 593 | { |
| 594 | struct pci_dev *pci = dev->pci; |
| 595 | struct scatterlist *list = buf->vb.dma.sglist; |
| 596 | int length = buf->vb.dma.sglen; |
| 597 | struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); |
| 598 | |
| 599 | DEB_EE(("dev:%p, buf:%p, sg_len:%d\n",dev,buf,length)); |
| 600 | |
| 601 | if( 0 != IS_PLANAR(sfmt->trans)) { |
| 602 | struct saa7146_pgtable *pt1 = &buf->pt[0]; |
| 603 | struct saa7146_pgtable *pt2 = &buf->pt[1]; |
| 604 | struct saa7146_pgtable *pt3 = &buf->pt[2]; |
| 605 | u32 *ptr1, *ptr2, *ptr3; |
| 606 | u32 fill; |
| 607 | |
| 608 | int size = buf->fmt->width*buf->fmt->height; |
| 609 | int i,p,m1,m2,m3,o1,o2; |
| 610 | |
| 611 | switch( sfmt->depth ) { |
| 612 | case 12: { |
| 613 | /* create some offsets inside the page table */ |
| 614 | m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; |
| 615 | m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1; |
| 616 | m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; |
| 617 | o1 = size%PAGE_SIZE; |
| 618 | o2 = (size+(size/4))%PAGE_SIZE; |
| 619 | DEB_CAP(("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",size,m1,m2,m3,o1,o2)); |
| 620 | break; |
| 621 | } |
| 622 | case 16: { |
| 623 | /* create some offsets inside the page table */ |
| 624 | m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; |
| 625 | m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; |
| 626 | m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1; |
| 627 | o1 = size%PAGE_SIZE; |
| 628 | o2 = (size+(size/2))%PAGE_SIZE; |
| 629 | DEB_CAP(("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",size,m1,m2,m3,o1,o2)); |
| 630 | break; |
| 631 | } |
| 632 | default: { |
| 633 | return -1; |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | ptr1 = pt1->cpu; |
| 638 | ptr2 = pt2->cpu; |
| 639 | ptr3 = pt3->cpu; |
| 640 | |
| 641 | /* walk all pages, copy all page addresses to ptr1 */ |
| 642 | for (i = 0; i < length; i++, list++) { |
| 643 | for (p = 0; p * 4096 < list->length; p++, ptr1++) { |
| 644 | *ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset); |
| 645 | } |
| 646 | } |
| 647 | /* |
| 648 | ptr1 = pt1->cpu; |
| 649 | for(j=0;j<40;j++) { |
| 650 | printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); |
| 651 | } |
| 652 | */ |
| 653 | |
| 654 | /* if we have a user buffer, the first page may not be |
| 655 | aligned to a page boundary. */ |
| 656 | pt1->offset = buf->vb.dma.sglist->offset; |
| 657 | pt2->offset = pt1->offset+o1; |
| 658 | pt3->offset = pt1->offset+o2; |
| 659 | |
| 660 | /* create video-dma2 page table */ |
| 661 | ptr1 = pt1->cpu; |
| 662 | for(i = m1; i <= m2 ; i++, ptr2++) { |
| 663 | *ptr2 = ptr1[i]; |
| 664 | } |
| 665 | fill = *(ptr2-1); |
| 666 | for(;i<1024;i++,ptr2++) { |
| 667 | *ptr2 = fill; |
| 668 | } |
| 669 | /* create video-dma3 page table */ |
| 670 | ptr1 = pt1->cpu; |
| 671 | for(i = m2; i <= m3; i++,ptr3++) { |
| 672 | *ptr3 = ptr1[i]; |
| 673 | } |
| 674 | fill = *(ptr3-1); |
| 675 | for(;i<1024;i++,ptr3++) { |
| 676 | *ptr3 = fill; |
| 677 | } |
| 678 | /* finally: finish up video-dma1 page table */ |
| 679 | ptr1 = pt1->cpu+m1; |
| 680 | fill = pt1->cpu[m1]; |
| 681 | for(i=m1;i<1024;i++,ptr1++) { |
| 682 | *ptr1 = fill; |
| 683 | } |
| 684 | /* |
| 685 | ptr1 = pt1->cpu; |
| 686 | ptr2 = pt2->cpu; |
| 687 | ptr3 = pt3->cpu; |
| 688 | for(j=0;j<40;j++) { |
| 689 | printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); |
| 690 | } |
| 691 | for(j=0;j<40;j++) { |
| 692 | printk("ptr2 %d: 0x%08x\n",j,ptr2[j]); |
| 693 | } |
| 694 | for(j=0;j<40;j++) { |
| 695 | printk("ptr3 %d: 0x%08x\n",j,ptr3[j]); |
| 696 | } |
| 697 | */ |
| 698 | } else { |
| 699 | struct saa7146_pgtable *pt = &buf->pt[0]; |
| 700 | return saa7146_pgtable_build_single(pci, pt, list, length); |
| 701 | } |
| 702 | |
| 703 | return 0; |
| 704 | } |
| 705 | |
| 706 | |
| 707 | /********************************************************************************/ |
| 708 | /* file operations */ |
| 709 | |
| 710 | static int video_begin(struct saa7146_fh *fh) |
| 711 | { |
| 712 | struct saa7146_dev *dev = fh->dev; |
| 713 | struct saa7146_vv *vv = dev->vv_data; |
| 714 | struct saa7146_format *fmt = NULL; |
| 715 | unsigned int resource; |
| 716 | int ret = 0, err = 0; |
| 717 | |
| 718 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 719 | |
| 720 | if ((vv->video_status & STATUS_CAPTURE) != 0) { |
| 721 | if (vv->video_fh == fh) { |
| 722 | DEB_S(("already capturing.\n")); |
| 723 | return 0; |
| 724 | } |
| 725 | DEB_S(("already capturing in another open.\n")); |
| 726 | return -EBUSY; |
| 727 | } |
| 728 | |
| 729 | if ((vv->video_status & STATUS_OVERLAY) != 0) { |
| 730 | DEB_S(("warning: suspending overlay video for streaming capture.\n")); |
| 731 | vv->ov_suspend = vv->video_fh; |
| 732 | err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ |
| 733 | if (0 != err) { |
| 734 | DEB_D(("suspending video failed. aborting\n")); |
| 735 | return err; |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); |
| 740 | /* we need to have a valid format set here */ |
| 741 | BUG_ON(NULL == fmt); |
| 742 | |
| 743 | if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { |
| 744 | resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; |
| 745 | } else { |
| 746 | resource = RESOURCE_DMA1_HPS; |
| 747 | } |
| 748 | |
| 749 | ret = saa7146_res_get(fh, resource); |
| 750 | if (0 == ret) { |
| 751 | DEB_S(("cannot get capture resource %d\n",resource)); |
| 752 | if (vv->ov_suspend != NULL) { |
| 753 | saa7146_start_preview(vv->ov_suspend); |
| 754 | vv->ov_suspend = NULL; |
| 755 | } |
| 756 | return -EBUSY; |
| 757 | } |
| 758 | |
| 759 | /* clear out beginning of streaming bit (rps register 0)*/ |
| 760 | saa7146_write(dev, MC2, MASK_27 ); |
| 761 | |
| 762 | /* enable rps0 irqs */ |
| 763 | SAA7146_IER_ENABLE(dev, MASK_27); |
| 764 | |
| 765 | vv->video_fh = fh; |
| 766 | vv->video_status = STATUS_CAPTURE; |
| 767 | |
| 768 | return 0; |
| 769 | } |
| 770 | |
| 771 | static int video_end(struct saa7146_fh *fh, struct file *file) |
| 772 | { |
| 773 | struct saa7146_dev *dev = fh->dev; |
| 774 | struct saa7146_vv *vv = dev->vv_data; |
| 775 | struct saa7146_format *fmt = NULL; |
| 776 | unsigned long flags; |
| 777 | unsigned int resource; |
| 778 | u32 dmas = 0; |
| 779 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 780 | |
| 781 | if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { |
| 782 | DEB_S(("not capturing.\n")); |
| 783 | return 0; |
| 784 | } |
| 785 | |
| 786 | if (vv->video_fh != fh) { |
| 787 | DEB_S(("capturing, but in another open.\n")); |
| 788 | return -EBUSY; |
| 789 | } |
| 790 | |
| 791 | fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); |
| 792 | /* we need to have a valid format set here */ |
| 793 | BUG_ON(NULL == fmt); |
| 794 | |
| 795 | if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { |
| 796 | resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; |
| 797 | dmas = MASK_22 | MASK_21 | MASK_20; |
| 798 | } else { |
| 799 | resource = RESOURCE_DMA1_HPS; |
| 800 | dmas = MASK_22; |
| 801 | } |
| 802 | spin_lock_irqsave(&dev->slock,flags); |
| 803 | |
| 804 | /* disable rps0 */ |
| 805 | saa7146_write(dev, MC1, MASK_28); |
| 806 | |
| 807 | /* disable rps0 irqs */ |
| 808 | SAA7146_IER_DISABLE(dev, MASK_27); |
| 809 | |
| 810 | /* shut down all used video dma transfers */ |
| 811 | saa7146_write(dev, MC1, dmas); |
| 812 | |
| 813 | spin_unlock_irqrestore(&dev->slock, flags); |
| 814 | |
| 815 | vv->video_fh = NULL; |
| 816 | vv->video_status = 0; |
| 817 | |
| 818 | saa7146_res_free(fh, resource); |
| 819 | |
| 820 | if (vv->ov_suspend != NULL) { |
| 821 | saa7146_start_preview(vv->ov_suspend); |
| 822 | vv->ov_suspend = NULL; |
| 823 | } |
| 824 | |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | /* |
| 829 | * This function is _not_ called directly, but from |
| 830 | * video_generic_ioctl (and maybe others). userspace |
| 831 | * copying is done already, arg is a kernel pointer. |
| 832 | */ |
| 833 | |
| 834 | int saa7146_video_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg) |
| 835 | { |
| 836 | struct saa7146_fh *fh = file->private_data; |
| 837 | struct saa7146_dev *dev = fh->dev; |
| 838 | struct saa7146_vv *vv = dev->vv_data; |
| 839 | |
| 840 | int err = 0, result = 0, ee = 0; |
| 841 | |
| 842 | struct saa7146_use_ops *ops; |
| 843 | struct videobuf_queue *q; |
| 844 | |
| 845 | /* check if extension handles the command */ |
| 846 | for(ee = 0; dev->ext_vv_data->ioctls[ee].flags != 0; ee++) { |
| 847 | if( cmd == dev->ext_vv_data->ioctls[ee].cmd ) |
| 848 | break; |
| 849 | } |
| 850 | |
| 851 | if( 0 != (dev->ext_vv_data->ioctls[ee].flags & SAA7146_EXCLUSIVE) ) { |
| 852 | DEB_D(("extension handles ioctl exclusive.\n")); |
| 853 | result = dev->ext_vv_data->ioctl(fh, cmd, arg); |
| 854 | return result; |
| 855 | } |
| 856 | if( 0 != (dev->ext_vv_data->ioctls[ee].flags & SAA7146_BEFORE) ) { |
| 857 | DEB_D(("extension handles ioctl before.\n")); |
| 858 | result = dev->ext_vv_data->ioctl(fh, cmd, arg); |
| 859 | if( -EAGAIN != result ) { |
| 860 | return result; |
| 861 | } |
| 862 | } |
| 863 | |
| 864 | /* fixme: add handle "after" case (is it still needed?) */ |
| 865 | |
| 866 | switch (fh->type) { |
| 867 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: { |
| 868 | ops = &saa7146_video_uops; |
| 869 | q = &fh->video_q; |
| 870 | break; |
| 871 | } |
| 872 | case V4L2_BUF_TYPE_VBI_CAPTURE: { |
| 873 | ops = &saa7146_vbi_uops; |
| 874 | q = &fh->vbi_q; |
| 875 | break; |
| 876 | } |
| 877 | default: |
| 878 | BUG(); |
| 879 | return 0; |
| 880 | } |
| 881 | |
| 882 | switch (cmd) { |
| 883 | case VIDIOC_QUERYCAP: |
| 884 | { |
| 885 | struct v4l2_capability *cap = arg; |
| 886 | memset(cap,0,sizeof(*cap)); |
| 887 | |
| 888 | DEB_EE(("VIDIOC_QUERYCAP\n")); |
| 889 | |
| 890 | strcpy(cap->driver, "saa7146 v4l2"); |
| 891 | strlcpy(cap->card, dev->ext->name, sizeof(cap->card)); |
| 892 | sprintf(cap->bus_info,"PCI:%s", pci_name(dev->pci)); |
| 893 | cap->version = SAA7146_VERSION_CODE; |
| 894 | cap->capabilities = |
| 895 | V4L2_CAP_VIDEO_CAPTURE | |
| 896 | V4L2_CAP_VIDEO_OVERLAY | |
| 897 | V4L2_CAP_READWRITE | |
| 898 | V4L2_CAP_STREAMING; |
| 899 | cap->capabilities |= dev->ext_vv_data->capabilities; |
| 900 | return 0; |
| 901 | } |
| 902 | case VIDIOC_G_FBUF: |
| 903 | { |
| 904 | struct v4l2_framebuffer *fb = arg; |
| 905 | |
| 906 | DEB_EE(("VIDIOC_G_FBUF\n")); |
| 907 | |
| 908 | *fb = vv->ov_fb; |
| 909 | fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; |
| 910 | return 0; |
| 911 | } |
| 912 | case VIDIOC_S_FBUF: |
| 913 | { |
| 914 | struct v4l2_framebuffer *fb = arg; |
| 915 | struct saa7146_format *fmt; |
| 916 | |
| 917 | DEB_EE(("VIDIOC_S_FBUF\n")); |
| 918 | |
| 919 | if(!capable(CAP_SYS_ADMIN) && |
| 920 | !capable(CAP_SYS_RAWIO)) |
| 921 | return -EPERM; |
| 922 | |
| 923 | /* check args */ |
| 924 | fmt = format_by_fourcc(dev,fb->fmt.pixelformat); |
| 925 | if (NULL == fmt) { |
| 926 | return -EINVAL; |
| 927 | } |
| 928 | |
| 929 | /* planar formats are not allowed for overlay video, clipping and video dma would clash */ |
| 930 | if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { |
| 931 | DEB_S(("planar pixelformat '%4.4s' not allowed for overlay\n",(char *)&fmt->pixelformat)); |
| 932 | } |
| 933 | |
| 934 | /* check if overlay is running */ |
| 935 | if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 936 | if (vv->video_fh != fh) { |
| 937 | DEB_D(("refusing to change framebuffer informations while overlay is active in another open.\n")); |
| 938 | return -EBUSY; |
| 939 | } |
| 940 | } |
| 941 | |
| 942 | down(&dev->lock); |
| 943 | |
| 944 | /* ok, accept it */ |
| 945 | vv->ov_fb = *fb; |
| 946 | vv->ov_fmt = fmt; |
| 947 | if (0 == vv->ov_fb.fmt.bytesperline) |
| 948 | vv->ov_fb.fmt.bytesperline = |
| 949 | vv->ov_fb.fmt.width*fmt->depth/8; |
| 950 | |
| 951 | up(&dev->lock); |
| 952 | |
| 953 | return 0; |
| 954 | } |
| 955 | case VIDIOC_ENUM_FMT: |
| 956 | { |
| 957 | struct v4l2_fmtdesc *f = arg; |
| 958 | int index; |
| 959 | |
| 960 | switch (f->type) { |
| 961 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
| 962 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: { |
| 963 | index = f->index; |
| 964 | if (index < 0 || index >= NUM_FORMATS) { |
| 965 | return -EINVAL; |
| 966 | } |
| 967 | memset(f,0,sizeof(*f)); |
| 968 | f->index = index; |
| 969 | strlcpy(f->description,formats[index].name,sizeof(f->description)); |
| 970 | f->pixelformat = formats[index].pixelformat; |
| 971 | break; |
| 972 | } |
| 973 | default: |
| 974 | return -EINVAL; |
| 975 | } |
| 976 | |
| 977 | DEB_EE(("VIDIOC_ENUM_FMT: type:%d, index:%d\n",f->type,f->index)); |
| 978 | return 0; |
| 979 | } |
| 980 | case VIDIOC_QUERYCTRL: |
| 981 | { |
| 982 | const struct v4l2_queryctrl *ctrl; |
| 983 | struct v4l2_queryctrl *c = arg; |
| 984 | |
| 985 | if ((c->id < V4L2_CID_BASE || |
| 986 | c->id >= V4L2_CID_LASTP1) && |
| 987 | (c->id < V4L2_CID_PRIVATE_BASE || |
| 988 | c->id >= V4L2_CID_PRIVATE_LASTP1)) |
| 989 | return -EINVAL; |
| 990 | |
| 991 | ctrl = ctrl_by_id(c->id); |
| 992 | if( NULL == ctrl ) { |
| 993 | return -EINVAL; |
| 994 | /* |
| 995 | c->flags = V4L2_CTRL_FLAG_DISABLED; |
| 996 | return 0; |
| 997 | */ |
| 998 | } |
| 999 | |
| 1000 | DEB_EE(("VIDIOC_QUERYCTRL: id:%d\n",c->id)); |
| 1001 | *c = *ctrl; |
| 1002 | return 0; |
| 1003 | } |
| 1004 | case VIDIOC_G_CTRL: { |
| 1005 | DEB_EE(("VIDIOC_G_CTRL\n")); |
| 1006 | return get_control(fh,arg); |
| 1007 | } |
| 1008 | case VIDIOC_S_CTRL: |
| 1009 | { |
| 1010 | DEB_EE(("VIDIOC_S_CTRL\n")); |
| 1011 | err = set_control(fh,arg); |
| 1012 | return err; |
| 1013 | } |
| 1014 | case VIDIOC_G_PARM: |
| 1015 | { |
| 1016 | struct v4l2_streamparm *parm = arg; |
| 1017 | if( parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ) { |
| 1018 | return -EINVAL; |
| 1019 | } |
| 1020 | memset(&parm->parm.capture,0,sizeof(struct v4l2_captureparm)); |
| 1021 | parm->parm.capture.readbuffers = 1; |
| 1022 | // fixme: only for PAL! |
| 1023 | parm->parm.capture.timeperframe.numerator = 1; |
| 1024 | parm->parm.capture.timeperframe.denominator = 25; |
| 1025 | return 0; |
| 1026 | } |
| 1027 | case VIDIOC_G_FMT: |
| 1028 | { |
| 1029 | struct v4l2_format *f = arg; |
| 1030 | DEB_EE(("VIDIOC_G_FMT\n")); |
| 1031 | return g_fmt(fh,f); |
| 1032 | } |
| 1033 | case VIDIOC_S_FMT: |
| 1034 | { |
| 1035 | struct v4l2_format *f = arg; |
| 1036 | DEB_EE(("VIDIOC_S_FMT\n")); |
| 1037 | return s_fmt(fh,f); |
| 1038 | } |
| 1039 | case VIDIOC_TRY_FMT: |
| 1040 | { |
| 1041 | struct v4l2_format *f = arg; |
| 1042 | DEB_EE(("VIDIOC_TRY_FMT\n")); |
| 1043 | return try_fmt(fh,f); |
| 1044 | } |
| 1045 | case VIDIOC_G_STD: |
| 1046 | { |
| 1047 | v4l2_std_id *id = arg; |
| 1048 | DEB_EE(("VIDIOC_G_STD\n")); |
| 1049 | *id = vv->standard->id; |
| 1050 | return 0; |
| 1051 | } |
| 1052 | /* the saa7146 supfhrts (used in conjunction with the saa7111a for example) |
| 1053 | PAL / NTSC / SECAM. if your hardware does not (or does more) |
| 1054 | -- override this function in your extension */ |
| 1055 | case VIDIOC_ENUMSTD: |
| 1056 | { |
| 1057 | struct v4l2_standard *e = arg; |
| 1058 | if (e->index < 0 ) |
| 1059 | return -EINVAL; |
| 1060 | if( e->index < dev->ext_vv_data->num_stds ) { |
| 1061 | DEB_EE(("VIDIOC_ENUMSTD: index:%d\n",e->index)); |
| 1062 | v4l2_video_std_construct(e, dev->ext_vv_data->stds[e->index].id, dev->ext_vv_data->stds[e->index].name); |
| 1063 | return 0; |
| 1064 | } |
| 1065 | return -EINVAL; |
| 1066 | } |
| 1067 | case VIDIOC_S_STD: |
| 1068 | { |
| 1069 | v4l2_std_id *id = arg; |
| 1070 | int found = 0; |
| 1071 | int i, err; |
| 1072 | |
| 1073 | DEB_EE(("VIDIOC_S_STD\n")); |
| 1074 | |
| 1075 | if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) { |
| 1076 | DEB_D(("cannot change video standard while streaming capture is active\n")); |
| 1077 | return -EBUSY; |
| 1078 | } |
| 1079 | |
| 1080 | if ((vv->video_status & STATUS_OVERLAY) != 0) { |
| 1081 | vv->ov_suspend = vv->video_fh; |
| 1082 | err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ |
| 1083 | if (0 != err) { |
| 1084 | DEB_D(("suspending video failed. aborting\n")); |
| 1085 | return err; |
| 1086 | } |
| 1087 | } |
| 1088 | |
| 1089 | down(&dev->lock); |
| 1090 | |
| 1091 | for(i = 0; i < dev->ext_vv_data->num_stds; i++) |
| 1092 | if (*id & dev->ext_vv_data->stds[i].id) |
| 1093 | break; |
| 1094 | if (i != dev->ext_vv_data->num_stds) { |
| 1095 | vv->standard = &dev->ext_vv_data->stds[i]; |
| 1096 | if( NULL != dev->ext_vv_data->std_callback ) |
| 1097 | dev->ext_vv_data->std_callback(dev, vv->standard); |
| 1098 | found = 1; |
| 1099 | } |
| 1100 | |
| 1101 | up(&dev->lock); |
| 1102 | |
| 1103 | if (vv->ov_suspend != NULL) { |
| 1104 | saa7146_start_preview(vv->ov_suspend); |
| 1105 | vv->ov_suspend = NULL; |
| 1106 | } |
| 1107 | |
| 1108 | if( 0 == found ) { |
| 1109 | DEB_EE(("VIDIOC_S_STD: standard not found.\n")); |
| 1110 | return -EINVAL; |
| 1111 | } |
| 1112 | |
| 1113 | DEB_EE(("VIDIOC_S_STD: set to standard to '%s'\n",vv->standard->name)); |
| 1114 | return 0; |
| 1115 | } |
| 1116 | case VIDIOC_OVERLAY: |
| 1117 | |
| 1118 | |
| 1119 | |
| 1120 | |
| 1121 | { |
| 1122 | int on = *(int *)arg; |
| 1123 | int err = 0; |
| 1124 | |
| 1125 | DEB_D(("VIDIOC_OVERLAY on:%d\n",on)); |
| 1126 | if (on != 0) { |
| 1127 | err = saa7146_start_preview(fh); |
| 1128 | } else { |
| 1129 | err = saa7146_stop_preview(fh); |
| 1130 | } |
| 1131 | return err; |
| 1132 | } |
| 1133 | case VIDIOC_REQBUFS: { |
| 1134 | struct v4l2_requestbuffers *req = arg; |
| 1135 | DEB_D(("VIDIOC_REQBUFS, type:%d\n",req->type)); |
| 1136 | return videobuf_reqbufs(q,req); |
| 1137 | } |
| 1138 | case VIDIOC_QUERYBUF: { |
| 1139 | struct v4l2_buffer *buf = arg; |
| 1140 | DEB_D(("VIDIOC_QUERYBUF, type:%d, offset:%d\n",buf->type,buf->m.offset)); |
| 1141 | return videobuf_querybuf(q,buf); |
| 1142 | } |
| 1143 | case VIDIOC_QBUF: { |
| 1144 | struct v4l2_buffer *buf = arg; |
| 1145 | int ret = 0; |
| 1146 | ret = videobuf_qbuf(q,buf); |
| 1147 | DEB_D(("VIDIOC_QBUF: ret:%d, index:%d\n",ret,buf->index)); |
| 1148 | return ret; |
| 1149 | } |
| 1150 | case VIDIOC_DQBUF: { |
| 1151 | struct v4l2_buffer *buf = arg; |
| 1152 | int ret = 0; |
| 1153 | ret = videobuf_dqbuf(q,buf,file->f_flags & O_NONBLOCK); |
| 1154 | DEB_D(("VIDIOC_DQBUF: ret:%d, index:%d\n",ret,buf->index)); |
| 1155 | return ret; |
| 1156 | } |
| 1157 | case VIDIOC_STREAMON: { |
| 1158 | int *type = arg; |
| 1159 | DEB_D(("VIDIOC_STREAMON, type:%d\n",*type)); |
| 1160 | |
| 1161 | err = video_begin(fh); |
| 1162 | if( 0 != err) { |
| 1163 | return err; |
| 1164 | } |
| 1165 | err = videobuf_streamon(q); |
| 1166 | return err; |
| 1167 | } |
| 1168 | case VIDIOC_STREAMOFF: { |
| 1169 | int *type = arg; |
| 1170 | |
| 1171 | DEB_D(("VIDIOC_STREAMOFF, type:%d\n",*type)); |
| 1172 | |
| 1173 | /* ugly: we need to copy some checks from video_end(), |
| 1174 | because videobuf_streamoff() relies on the capture running. |
| 1175 | check and fix this */ |
| 1176 | if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { |
| 1177 | DEB_S(("not capturing.\n")); |
| 1178 | return 0; |
| 1179 | } |
| 1180 | |
| 1181 | if (vv->video_fh != fh) { |
| 1182 | DEB_S(("capturing, but in another open.\n")); |
| 1183 | return -EBUSY; |
| 1184 | } |
| 1185 | |
| 1186 | err = videobuf_streamoff(q); |
| 1187 | if (0 != err) { |
| 1188 | DEB_D(("warning: videobuf_streamoff() failed.\n")); |
| 1189 | video_end(fh, file); |
| 1190 | } else { |
| 1191 | err = video_end(fh, file); |
| 1192 | } |
| 1193 | return err; |
| 1194 | } |
| 1195 | case VIDIOCGMBUF: |
| 1196 | { |
| 1197 | struct video_mbuf *mbuf = arg; |
| 1198 | struct videobuf_queue *q; |
| 1199 | int i; |
| 1200 | |
| 1201 | /* fixme: number of capture buffers and sizes for v4l apps */ |
| 1202 | int gbuffers = 2; |
| 1203 | int gbufsize = 768*576*4; |
| 1204 | |
| 1205 | DEB_D(("VIDIOCGMBUF \n")); |
| 1206 | |
| 1207 | q = &fh->video_q; |
| 1208 | down(&q->lock); |
| 1209 | err = videobuf_mmap_setup(q,gbuffers,gbufsize, |
| 1210 | V4L2_MEMORY_MMAP); |
| 1211 | if (err < 0) { |
| 1212 | up(&q->lock); |
| 1213 | return err; |
| 1214 | } |
| 1215 | memset(mbuf,0,sizeof(*mbuf)); |
| 1216 | mbuf->frames = gbuffers; |
| 1217 | mbuf->size = gbuffers * gbufsize; |
| 1218 | for (i = 0; i < gbuffers; i++) |
| 1219 | mbuf->offsets[i] = i * gbufsize; |
| 1220 | up(&q->lock); |
| 1221 | return 0; |
| 1222 | } |
| 1223 | default: |
| 1224 | return v4l_compat_translate_ioctl(inode,file,cmd,arg, |
| 1225 | saa7146_video_do_ioctl); |
| 1226 | } |
| 1227 | return 0; |
| 1228 | } |
| 1229 | |
| 1230 | /*********************************************************************************/ |
| 1231 | /* buffer handling functions */ |
| 1232 | |
| 1233 | static int buffer_activate (struct saa7146_dev *dev, |
| 1234 | struct saa7146_buf *buf, |
| 1235 | struct saa7146_buf *next) |
| 1236 | { |
| 1237 | struct saa7146_vv *vv = dev->vv_data; |
| 1238 | |
| 1239 | buf->vb.state = STATE_ACTIVE; |
| 1240 | saa7146_set_capture(dev,buf,next); |
| 1241 | |
| 1242 | mod_timer(&vv->video_q.timeout, jiffies+BUFFER_TIMEOUT); |
| 1243 | return 0; |
| 1244 | } |
| 1245 | |
| 1246 | static int buffer_prepare(struct videobuf_queue *q, |
| 1247 | struct videobuf_buffer *vb, enum v4l2_field field) |
| 1248 | { |
| 1249 | struct file *file = q->priv_data; |
| 1250 | struct saa7146_fh *fh = file->private_data; |
| 1251 | struct saa7146_dev *dev = fh->dev; |
| 1252 | struct saa7146_vv *vv = dev->vv_data; |
| 1253 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; |
| 1254 | int size,err = 0; |
| 1255 | |
| 1256 | DEB_CAP(("vbuf:%p\n",vb)); |
| 1257 | |
| 1258 | /* sanity checks */ |
| 1259 | if (fh->video_fmt.width < 48 || |
| 1260 | fh->video_fmt.height < 32 || |
| 1261 | fh->video_fmt.width > vv->standard->h_max_out || |
| 1262 | fh->video_fmt.height > vv->standard->v_max_out) { |
| 1263 | DEB_D(("w (%d) / h (%d) out of bounds.\n",fh->video_fmt.width,fh->video_fmt.height)); |
| 1264 | return -EINVAL; |
| 1265 | } |
| 1266 | |
| 1267 | size = fh->video_fmt.sizeimage; |
| 1268 | if (0 != buf->vb.baddr && buf->vb.bsize < size) { |
| 1269 | DEB_D(("size mismatch.\n")); |
| 1270 | return -EINVAL; |
| 1271 | } |
| 1272 | |
| 1273 | DEB_CAP(("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n", |
| 1274 | fh->video_fmt.width,fh->video_fmt.height,size,v4l2_field_names[fh->video_fmt.field])); |
| 1275 | if (buf->vb.width != fh->video_fmt.width || |
| 1276 | buf->vb.bytesperline != fh->video_fmt.bytesperline || |
| 1277 | buf->vb.height != fh->video_fmt.height || |
| 1278 | buf->vb.size != size || |
| 1279 | buf->vb.field != field || |
| 1280 | buf->vb.field != fh->video_fmt.field || |
| 1281 | buf->fmt != &fh->video_fmt) { |
| 1282 | saa7146_dma_free(dev,buf); |
| 1283 | } |
| 1284 | |
| 1285 | if (STATE_NEEDS_INIT == buf->vb.state) { |
| 1286 | struct saa7146_format *sfmt; |
| 1287 | |
| 1288 | buf->vb.bytesperline = fh->video_fmt.bytesperline; |
| 1289 | buf->vb.width = fh->video_fmt.width; |
| 1290 | buf->vb.height = fh->video_fmt.height; |
| 1291 | buf->vb.size = size; |
| 1292 | buf->vb.field = field; |
| 1293 | buf->fmt = &fh->video_fmt; |
| 1294 | buf->vb.field = fh->video_fmt.field; |
| 1295 | |
| 1296 | sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); |
| 1297 | |
| 1298 | if( 0 != IS_PLANAR(sfmt->trans)) { |
| 1299 | saa7146_pgtable_free(dev->pci, &buf->pt[0]); |
| 1300 | saa7146_pgtable_free(dev->pci, &buf->pt[1]); |
| 1301 | saa7146_pgtable_free(dev->pci, &buf->pt[2]); |
| 1302 | |
| 1303 | saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); |
| 1304 | saa7146_pgtable_alloc(dev->pci, &buf->pt[1]); |
| 1305 | saa7146_pgtable_alloc(dev->pci, &buf->pt[2]); |
| 1306 | } else { |
| 1307 | saa7146_pgtable_free(dev->pci, &buf->pt[0]); |
| 1308 | saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); |
| 1309 | } |
| 1310 | |
| 1311 | err = videobuf_iolock(dev->pci,&buf->vb, &vv->ov_fb); |
| 1312 | if (err) |
| 1313 | goto oops; |
| 1314 | err = saa7146_pgtable_build(dev,buf); |
| 1315 | if (err) |
| 1316 | goto oops; |
| 1317 | } |
| 1318 | buf->vb.state = STATE_PREPARED; |
| 1319 | buf->activate = buffer_activate; |
| 1320 | |
| 1321 | return 0; |
| 1322 | |
| 1323 | oops: |
| 1324 | DEB_D(("error out.\n")); |
| 1325 | saa7146_dma_free(dev,buf); |
| 1326 | |
| 1327 | return err; |
| 1328 | } |
| 1329 | |
| 1330 | static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) |
| 1331 | { |
| 1332 | struct file *file = q->priv_data; |
| 1333 | struct saa7146_fh *fh = file->private_data; |
| 1334 | |
| 1335 | if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS) |
| 1336 | *count = MAX_SAA7146_CAPTURE_BUFFERS; |
| 1337 | |
| 1338 | *size = fh->video_fmt.sizeimage; |
| 1339 | |
| 1340 | /* check if we exceed the "max_memory" parameter */ |
| 1341 | if( (*count * *size) > (max_memory*1048576) ) { |
| 1342 | *count = (max_memory*1048576) / *size; |
| 1343 | } |
| 1344 | |
| 1345 | DEB_CAP(("%d buffers, %d bytes each.\n",*count,*size)); |
| 1346 | |
| 1347 | return 0; |
| 1348 | } |
| 1349 | |
| 1350 | static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) |
| 1351 | { |
| 1352 | struct file *file = q->priv_data; |
| 1353 | struct saa7146_fh *fh = file->private_data; |
| 1354 | struct saa7146_dev *dev = fh->dev; |
| 1355 | struct saa7146_vv *vv = dev->vv_data; |
| 1356 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; |
| 1357 | |
| 1358 | DEB_CAP(("vbuf:%p\n",vb)); |
| 1359 | saa7146_buffer_queue(fh->dev,&vv->video_q,buf); |
| 1360 | } |
| 1361 | |
| 1362 | |
| 1363 | static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) |
| 1364 | { |
| 1365 | struct file *file = q->priv_data; |
| 1366 | struct saa7146_fh *fh = file->private_data; |
| 1367 | struct saa7146_dev *dev = fh->dev; |
| 1368 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; |
| 1369 | |
| 1370 | DEB_CAP(("vbuf:%p\n",vb)); |
| 1371 | saa7146_dma_free(dev,buf); |
| 1372 | } |
| 1373 | |
| 1374 | static struct videobuf_queue_ops video_qops = { |
| 1375 | .buf_setup = buffer_setup, |
| 1376 | .buf_prepare = buffer_prepare, |
| 1377 | .buf_queue = buffer_queue, |
| 1378 | .buf_release = buffer_release, |
| 1379 | }; |
| 1380 | |
| 1381 | /********************************************************************************/ |
| 1382 | /* file operations */ |
| 1383 | |
| 1384 | static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv) |
| 1385 | { |
| 1386 | INIT_LIST_HEAD(&vv->video_q.queue); |
| 1387 | |
| 1388 | init_timer(&vv->video_q.timeout); |
| 1389 | vv->video_q.timeout.function = saa7146_buffer_timeout; |
| 1390 | vv->video_q.timeout.data = (unsigned long)(&vv->video_q); |
| 1391 | vv->video_q.dev = dev; |
| 1392 | |
| 1393 | /* set some default values */ |
| 1394 | vv->standard = &dev->ext_vv_data->stds[0]; |
| 1395 | |
| 1396 | /* FIXME: what's this? */ |
| 1397 | vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A; |
| 1398 | vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A; |
| 1399 | } |
| 1400 | |
| 1401 | |
| 1402 | static int video_open(struct saa7146_dev *dev, struct file *file) |
| 1403 | { |
| 1404 | struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data; |
| 1405 | struct saa7146_format *sfmt; |
| 1406 | |
| 1407 | fh->video_fmt.width = 384; |
| 1408 | fh->video_fmt.height = 288; |
| 1409 | fh->video_fmt.pixelformat = V4L2_PIX_FMT_BGR24; |
| 1410 | fh->video_fmt.bytesperline = 0; |
| 1411 | fh->video_fmt.field = V4L2_FIELD_ANY; |
| 1412 | sfmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); |
| 1413 | fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8; |
| 1414 | |
| 1415 | videobuf_queue_init(&fh->video_q, &video_qops, |
| 1416 | dev->pci, &dev->slock, |
| 1417 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 1418 | V4L2_FIELD_INTERLACED, |
| 1419 | sizeof(struct saa7146_buf), |
| 1420 | file); |
| 1421 | |
| 1422 | init_MUTEX(&fh->video_q.lock); |
| 1423 | |
| 1424 | return 0; |
| 1425 | } |
| 1426 | |
| 1427 | |
| 1428 | static void video_close(struct saa7146_dev *dev, struct file *file) |
| 1429 | { |
| 1430 | struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data; |
| 1431 | struct saa7146_vv *vv = dev->vv_data; |
| 1432 | int err; |
| 1433 | |
| 1434 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 1435 | err = video_end(fh, file); |
| 1436 | } else if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 1437 | err = saa7146_stop_preview(fh); |
| 1438 | } |
| 1439 | |
| 1440 | /* hmm, why is this function declared void? */ |
| 1441 | /* return err */ |
| 1442 | } |
| 1443 | |
| 1444 | |
| 1445 | static void video_irq_done(struct saa7146_dev *dev, unsigned long st) |
| 1446 | { |
| 1447 | struct saa7146_vv *vv = dev->vv_data; |
| 1448 | struct saa7146_dmaqueue *q = &vv->video_q; |
| 1449 | |
| 1450 | spin_lock(&dev->slock); |
| 1451 | DEB_CAP(("called.\n")); |
| 1452 | |
| 1453 | /* only finish the buffer if we have one... */ |
| 1454 | if( NULL != q->curr ) { |
| 1455 | saa7146_buffer_finish(dev,q,STATE_DONE); |
| 1456 | } |
| 1457 | saa7146_buffer_next(dev,q,0); |
| 1458 | |
| 1459 | spin_unlock(&dev->slock); |
| 1460 | } |
| 1461 | |
| 1462 | static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos) |
| 1463 | { |
| 1464 | struct saa7146_fh *fh = file->private_data; |
| 1465 | struct saa7146_dev *dev = fh->dev; |
| 1466 | struct saa7146_vv *vv = dev->vv_data; |
| 1467 | ssize_t ret = 0; |
| 1468 | |
| 1469 | DEB_EE(("called.\n")); |
| 1470 | |
| 1471 | if ((vv->video_status & STATUS_CAPTURE) != 0) { |
| 1472 | /* fixme: should we allow read() captures while streaming capture? */ |
| 1473 | if (vv->video_fh == fh) { |
| 1474 | DEB_S(("already capturing.\n")); |
| 1475 | return -EBUSY; |
| 1476 | } |
| 1477 | DEB_S(("already capturing in another open.\n")); |
| 1478 | return -EBUSY; |
| 1479 | } |
| 1480 | |
| 1481 | ret = video_begin(fh); |
| 1482 | if( 0 != ret) { |
| 1483 | goto out; |
| 1484 | } |
| 1485 | |
| 1486 | ret = videobuf_read_one(&fh->video_q , data, count, ppos, |
| 1487 | file->f_flags & O_NONBLOCK); |
| 1488 | if (ret != 0) { |
| 1489 | video_end(fh, file); |
| 1490 | } else { |
| 1491 | ret = video_end(fh, file); |
| 1492 | } |
| 1493 | out: |
| 1494 | /* restart overlay if it was active before */ |
| 1495 | if (vv->ov_suspend != NULL) { |
| 1496 | saa7146_start_preview(vv->ov_suspend); |
| 1497 | vv->ov_suspend = NULL; |
| 1498 | } |
| 1499 | |
| 1500 | return ret; |
| 1501 | } |
| 1502 | |
| 1503 | struct saa7146_use_ops saa7146_video_uops = { |
| 1504 | .init = video_init, |
| 1505 | .open = video_open, |
| 1506 | .release = video_close, |
| 1507 | .irq_done = video_irq_done, |
| 1508 | .read = video_read, |
| 1509 | }; |