Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <media/saa7146_vv.h> |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 2 | #include <media/v4l2-chip-ident.h> |
Paul Gortmaker | 7a707b8 | 2011-07-03 14:03:12 -0400 | [diff] [blame^] | 3 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | |
| 5 | static int max_memory = 32; |
| 6 | |
| 7 | module_param(max_memory, int, 0644); |
| 8 | MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)"); |
| 9 | |
| 10 | #define IS_CAPTURE_ACTIVE(fh) \ |
| 11 | (((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh)) |
| 12 | |
| 13 | #define IS_OVERLAY_ACTIVE(fh) \ |
| 14 | (((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh)) |
| 15 | |
| 16 | /* format descriptions for capture and preview */ |
| 17 | static struct saa7146_format formats[] = { |
| 18 | { |
| 19 | .name = "RGB-8 (3-3-2)", |
| 20 | .pixelformat = V4L2_PIX_FMT_RGB332, |
| 21 | .trans = RGB08_COMPOSED, |
| 22 | .depth = 8, |
| 23 | .flags = 0, |
| 24 | }, { |
| 25 | .name = "RGB-16 (5/B-6/G-5/R)", |
| 26 | .pixelformat = V4L2_PIX_FMT_RGB565, |
| 27 | .trans = RGB16_COMPOSED, |
| 28 | .depth = 16, |
| 29 | .flags = 0, |
| 30 | }, { |
| 31 | .name = "RGB-24 (B-G-R)", |
| 32 | .pixelformat = V4L2_PIX_FMT_BGR24, |
| 33 | .trans = RGB24_COMPOSED, |
| 34 | .depth = 24, |
| 35 | .flags = 0, |
| 36 | }, { |
| 37 | .name = "RGB-32 (B-G-R)", |
| 38 | .pixelformat = V4L2_PIX_FMT_BGR32, |
| 39 | .trans = RGB32_COMPOSED, |
| 40 | .depth = 32, |
| 41 | .flags = 0, |
| 42 | }, { |
| 43 | .name = "RGB-32 (R-G-B)", |
| 44 | .pixelformat = V4L2_PIX_FMT_RGB32, |
| 45 | .trans = RGB32_COMPOSED, |
| 46 | .depth = 32, |
| 47 | .flags = 0, |
| 48 | .swap = 0x2, |
| 49 | }, { |
| 50 | .name = "Greyscale-8", |
| 51 | .pixelformat = V4L2_PIX_FMT_GREY, |
| 52 | .trans = Y8, |
| 53 | .depth = 8, |
| 54 | .flags = 0, |
| 55 | }, { |
| 56 | .name = "YUV 4:2:2 planar (Y-Cb-Cr)", |
| 57 | .pixelformat = V4L2_PIX_FMT_YUV422P, |
| 58 | .trans = YUV422_DECOMPOSED, |
| 59 | .depth = 16, |
| 60 | .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, |
| 61 | }, { |
| 62 | .name = "YVU 4:2:0 planar (Y-Cb-Cr)", |
| 63 | .pixelformat = V4L2_PIX_FMT_YVU420, |
| 64 | .trans = YUV420_DECOMPOSED, |
| 65 | .depth = 12, |
| 66 | .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, |
| 67 | }, { |
| 68 | .name = "YUV 4:2:0 planar (Y-Cb-Cr)", |
| 69 | .pixelformat = V4L2_PIX_FMT_YUV420, |
| 70 | .trans = YUV420_DECOMPOSED, |
| 71 | .depth = 12, |
| 72 | .flags = FORMAT_IS_PLANAR, |
| 73 | }, { |
| 74 | .name = "YUV 4:2:2 (U-Y-V-Y)", |
| 75 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 76 | .trans = YUV422_COMPOSED, |
| 77 | .depth = 16, |
| 78 | .flags = 0, |
| 79 | } |
| 80 | }; |
| 81 | |
| 82 | /* unfortunately, the saa7146 contains a bug which prevents it from doing on-the-fly byte swaps. |
| 83 | due to this, it's impossible to provide additional *packed* formats, which are simply byte swapped |
| 84 | (like V4L2_PIX_FMT_YUYV) ... 8-( */ |
| 85 | |
| 86 | static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format); |
| 87 | |
Mauro Carvalho Chehab | a757ee2 | 2010-12-02 01:57:03 -0200 | [diff] [blame] | 88 | struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | { |
| 90 | int i, j = NUM_FORMATS; |
| 91 | |
| 92 | for (i = 0; i < j; i++) { |
| 93 | if (formats[i].pixelformat == fourcc) { |
| 94 | return formats+i; |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | DEB_D(("unknown pixelformat:'%4.4s'\n",(char *)&fourcc)); |
| 99 | return NULL; |
| 100 | } |
| 101 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 102 | static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
| 104 | int saa7146_start_preview(struct saa7146_fh *fh) |
| 105 | { |
| 106 | struct saa7146_dev *dev = fh->dev; |
| 107 | struct saa7146_vv *vv = dev->vv_data; |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 108 | struct v4l2_format fmt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | int ret = 0, err = 0; |
| 110 | |
| 111 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 112 | |
| 113 | /* check if we have overlay informations */ |
| 114 | if( NULL == fh->ov.fh ) { |
| 115 | DEB_D(("no overlay data available. try S_FMT first.\n")); |
| 116 | return -EAGAIN; |
| 117 | } |
| 118 | |
| 119 | /* check if streaming capture is running */ |
| 120 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 121 | DEB_D(("streaming capture is active.\n")); |
| 122 | return -EBUSY; |
| 123 | } |
| 124 | |
| 125 | /* check if overlay is running */ |
| 126 | if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 127 | if (vv->video_fh == fh) { |
| 128 | DEB_D(("overlay is already active.\n")); |
| 129 | return 0; |
| 130 | } |
| 131 | DEB_D(("overlay is already active in another open.\n")); |
| 132 | return -EBUSY; |
| 133 | } |
| 134 | |
| 135 | if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) { |
| 136 | DEB_D(("cannot get necessary overlay resources\n")); |
| 137 | return -EBUSY; |
| 138 | } |
| 139 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 140 | fmt.fmt.win = fh->ov.win; |
| 141 | err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | if (0 != err) { |
| 143 | saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); |
| 144 | return -EBUSY; |
| 145 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 146 | fh->ov.win = fmt.fmt.win; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | vv->ov_data = &fh->ov; |
| 148 | |
| 149 | DEB_D(("%dx%d+%d+%d %s field=%s\n", |
| 150 | fh->ov.win.w.width,fh->ov.win.w.height, |
| 151 | fh->ov.win.w.left,fh->ov.win.w.top, |
| 152 | vv->ov_fmt->name,v4l2_field_names[fh->ov.win.field])); |
| 153 | |
| 154 | if (0 != (ret = saa7146_enable_overlay(fh))) { |
| 155 | DEB_D(("enabling overlay failed: %d\n",ret)); |
| 156 | saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); |
| 157 | return ret; |
| 158 | } |
| 159 | |
| 160 | vv->video_status = STATUS_OVERLAY; |
| 161 | vv->video_fh = fh; |
| 162 | |
| 163 | return 0; |
| 164 | } |
Adrian Bunk | 5d7dc8c | 2006-04-11 10:26:57 -0300 | [diff] [blame] | 165 | EXPORT_SYMBOL_GPL(saa7146_start_preview); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
| 167 | int saa7146_stop_preview(struct saa7146_fh *fh) |
| 168 | { |
| 169 | struct saa7146_dev *dev = fh->dev; |
| 170 | struct saa7146_vv *vv = dev->vv_data; |
| 171 | |
| 172 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 173 | |
| 174 | /* check if streaming capture is running */ |
| 175 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 176 | DEB_D(("streaming capture is active.\n")); |
| 177 | return -EBUSY; |
| 178 | } |
| 179 | |
| 180 | /* check if overlay is running at all */ |
| 181 | if ((vv->video_status & STATUS_OVERLAY) == 0) { |
| 182 | DEB_D(("no active overlay.\n")); |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | if (vv->video_fh != fh) { |
| 187 | DEB_D(("overlay is active, but in another open.\n")); |
| 188 | return -EBUSY; |
| 189 | } |
| 190 | |
| 191 | vv->video_status = 0; |
| 192 | vv->video_fh = NULL; |
| 193 | |
| 194 | saa7146_disable_overlay(fh); |
| 195 | |
| 196 | saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); |
| 197 | |
| 198 | return 0; |
| 199 | } |
Adrian Bunk | 5d7dc8c | 2006-04-11 10:26:57 -0300 | [diff] [blame] | 200 | EXPORT_SYMBOL_GPL(saa7146_stop_preview); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /********************************************************************************/ |
| 203 | /* device controls */ |
| 204 | |
| 205 | static struct v4l2_queryctrl controls[] = { |
| 206 | { |
| 207 | .id = V4L2_CID_BRIGHTNESS, |
| 208 | .name = "Brightness", |
| 209 | .minimum = 0, |
| 210 | .maximum = 255, |
| 211 | .step = 1, |
| 212 | .default_value = 128, |
| 213 | .type = V4L2_CTRL_TYPE_INTEGER, |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 214 | .flags = V4L2_CTRL_FLAG_SLIDER, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | },{ |
| 216 | .id = V4L2_CID_CONTRAST, |
| 217 | .name = "Contrast", |
| 218 | .minimum = 0, |
| 219 | .maximum = 127, |
| 220 | .step = 1, |
| 221 | .default_value = 64, |
| 222 | .type = V4L2_CTRL_TYPE_INTEGER, |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 223 | .flags = V4L2_CTRL_FLAG_SLIDER, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | },{ |
| 225 | .id = V4L2_CID_SATURATION, |
| 226 | .name = "Saturation", |
| 227 | .minimum = 0, |
| 228 | .maximum = 127, |
| 229 | .step = 1, |
| 230 | .default_value = 64, |
| 231 | .type = V4L2_CTRL_TYPE_INTEGER, |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 232 | .flags = V4L2_CTRL_FLAG_SLIDER, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | },{ |
| 234 | .id = V4L2_CID_VFLIP, |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 235 | .name = "Vertical Flip", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | .minimum = 0, |
| 237 | .maximum = 1, |
| 238 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 239 | },{ |
| 240 | .id = V4L2_CID_HFLIP, |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 241 | .name = "Horizontal Flip", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | .minimum = 0, |
| 243 | .maximum = 1, |
| 244 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 245 | }, |
| 246 | }; |
| 247 | static int NUM_CONTROLS = sizeof(controls)/sizeof(struct v4l2_queryctrl); |
| 248 | |
| 249 | #define V4L2_CID_PRIVATE_LASTP1 (V4L2_CID_PRIVATE_BASE + 0) |
| 250 | |
| 251 | static struct v4l2_queryctrl* ctrl_by_id(int id) |
| 252 | { |
| 253 | int i; |
| 254 | |
| 255 | for (i = 0; i < NUM_CONTROLS; i++) |
| 256 | if (controls[i].id == id) |
| 257 | return controls+i; |
| 258 | return NULL; |
| 259 | } |
| 260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | /********************************************************************************/ |
| 262 | /* common pagetable functions */ |
| 263 | |
| 264 | static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf) |
| 265 | { |
| 266 | struct pci_dev *pci = dev->pci; |
Mauro Carvalho Chehab | c1accaa | 2007-08-23 16:37:49 -0300 | [diff] [blame] | 267 | struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); |
| 268 | struct scatterlist *list = dma->sglist; |
| 269 | int length = dma->sglen; |
Mauro Carvalho Chehab | a757ee2 | 2010-12-02 01:57:03 -0200 | [diff] [blame] | 270 | struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
| 272 | DEB_EE(("dev:%p, buf:%p, sg_len:%d\n",dev,buf,length)); |
| 273 | |
| 274 | if( 0 != IS_PLANAR(sfmt->trans)) { |
| 275 | struct saa7146_pgtable *pt1 = &buf->pt[0]; |
| 276 | struct saa7146_pgtable *pt2 = &buf->pt[1]; |
| 277 | struct saa7146_pgtable *pt3 = &buf->pt[2]; |
Al Viro | a36ef6b | 2008-06-22 14:19:19 -0300 | [diff] [blame] | 278 | __le32 *ptr1, *ptr2, *ptr3; |
| 279 | __le32 fill; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
| 281 | int size = buf->fmt->width*buf->fmt->height; |
| 282 | int i,p,m1,m2,m3,o1,o2; |
| 283 | |
| 284 | switch( sfmt->depth ) { |
| 285 | case 12: { |
| 286 | /* create some offsets inside the page table */ |
| 287 | m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; |
| 288 | m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1; |
| 289 | m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; |
| 290 | o1 = size%PAGE_SIZE; |
| 291 | o2 = (size+(size/4))%PAGE_SIZE; |
| 292 | DEB_CAP(("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",size,m1,m2,m3,o1,o2)); |
| 293 | break; |
| 294 | } |
| 295 | case 16: { |
| 296 | /* create some offsets inside the page table */ |
| 297 | m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; |
| 298 | m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; |
| 299 | m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1; |
| 300 | o1 = size%PAGE_SIZE; |
| 301 | o2 = (size+(size/2))%PAGE_SIZE; |
| 302 | DEB_CAP(("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",size,m1,m2,m3,o1,o2)); |
| 303 | break; |
| 304 | } |
| 305 | default: { |
| 306 | return -1; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | ptr1 = pt1->cpu; |
| 311 | ptr2 = pt2->cpu; |
| 312 | ptr3 = pt3->cpu; |
| 313 | |
| 314 | /* walk all pages, copy all page addresses to ptr1 */ |
| 315 | for (i = 0; i < length; i++, list++) { |
| 316 | for (p = 0; p * 4096 < list->length; p++, ptr1++) { |
| 317 | *ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset); |
| 318 | } |
| 319 | } |
| 320 | /* |
| 321 | ptr1 = pt1->cpu; |
| 322 | for(j=0;j<40;j++) { |
| 323 | printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); |
| 324 | } |
| 325 | */ |
| 326 | |
| 327 | /* if we have a user buffer, the first page may not be |
| 328 | aligned to a page boundary. */ |
Hans Verkuil | 429e908 | 2008-07-27 14:08:54 -0300 | [diff] [blame] | 329 | pt1->offset = dma->sglist->offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | pt2->offset = pt1->offset+o1; |
| 331 | pt3->offset = pt1->offset+o2; |
| 332 | |
| 333 | /* create video-dma2 page table */ |
| 334 | ptr1 = pt1->cpu; |
| 335 | for(i = m1; i <= m2 ; i++, ptr2++) { |
| 336 | *ptr2 = ptr1[i]; |
| 337 | } |
| 338 | fill = *(ptr2-1); |
| 339 | for(;i<1024;i++,ptr2++) { |
| 340 | *ptr2 = fill; |
| 341 | } |
| 342 | /* create video-dma3 page table */ |
| 343 | ptr1 = pt1->cpu; |
| 344 | for(i = m2; i <= m3; i++,ptr3++) { |
| 345 | *ptr3 = ptr1[i]; |
| 346 | } |
| 347 | fill = *(ptr3-1); |
| 348 | for(;i<1024;i++,ptr3++) { |
| 349 | *ptr3 = fill; |
| 350 | } |
| 351 | /* finally: finish up video-dma1 page table */ |
| 352 | ptr1 = pt1->cpu+m1; |
| 353 | fill = pt1->cpu[m1]; |
| 354 | for(i=m1;i<1024;i++,ptr1++) { |
| 355 | *ptr1 = fill; |
| 356 | } |
| 357 | /* |
| 358 | ptr1 = pt1->cpu; |
| 359 | ptr2 = pt2->cpu; |
| 360 | ptr3 = pt3->cpu; |
| 361 | for(j=0;j<40;j++) { |
| 362 | printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); |
| 363 | } |
| 364 | for(j=0;j<40;j++) { |
| 365 | printk("ptr2 %d: 0x%08x\n",j,ptr2[j]); |
| 366 | } |
| 367 | for(j=0;j<40;j++) { |
| 368 | printk("ptr3 %d: 0x%08x\n",j,ptr3[j]); |
| 369 | } |
| 370 | */ |
| 371 | } else { |
| 372 | struct saa7146_pgtable *pt = &buf->pt[0]; |
| 373 | return saa7146_pgtable_build_single(pci, pt, list, length); |
| 374 | } |
| 375 | |
| 376 | return 0; |
| 377 | } |
| 378 | |
| 379 | |
| 380 | /********************************************************************************/ |
| 381 | /* file operations */ |
| 382 | |
| 383 | static int video_begin(struct saa7146_fh *fh) |
| 384 | { |
| 385 | struct saa7146_dev *dev = fh->dev; |
| 386 | struct saa7146_vv *vv = dev->vv_data; |
| 387 | struct saa7146_format *fmt = NULL; |
| 388 | unsigned int resource; |
| 389 | int ret = 0, err = 0; |
| 390 | |
| 391 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 392 | |
| 393 | if ((vv->video_status & STATUS_CAPTURE) != 0) { |
| 394 | if (vv->video_fh == fh) { |
| 395 | DEB_S(("already capturing.\n")); |
| 396 | return 0; |
| 397 | } |
| 398 | DEB_S(("already capturing in another open.\n")); |
| 399 | return -EBUSY; |
| 400 | } |
| 401 | |
| 402 | if ((vv->video_status & STATUS_OVERLAY) != 0) { |
| 403 | DEB_S(("warning: suspending overlay video for streaming capture.\n")); |
| 404 | vv->ov_suspend = vv->video_fh; |
| 405 | err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ |
| 406 | if (0 != err) { |
| 407 | DEB_D(("suspending video failed. aborting\n")); |
| 408 | return err; |
| 409 | } |
| 410 | } |
| 411 | |
Mauro Carvalho Chehab | a757ee2 | 2010-12-02 01:57:03 -0200 | [diff] [blame] | 412 | fmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | /* we need to have a valid format set here */ |
| 414 | BUG_ON(NULL == fmt); |
| 415 | |
| 416 | if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { |
| 417 | resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; |
| 418 | } else { |
| 419 | resource = RESOURCE_DMA1_HPS; |
| 420 | } |
| 421 | |
| 422 | ret = saa7146_res_get(fh, resource); |
| 423 | if (0 == ret) { |
| 424 | DEB_S(("cannot get capture resource %d\n",resource)); |
| 425 | if (vv->ov_suspend != NULL) { |
| 426 | saa7146_start_preview(vv->ov_suspend); |
| 427 | vv->ov_suspend = NULL; |
| 428 | } |
| 429 | return -EBUSY; |
| 430 | } |
| 431 | |
| 432 | /* clear out beginning of streaming bit (rps register 0)*/ |
| 433 | saa7146_write(dev, MC2, MASK_27 ); |
| 434 | |
| 435 | /* enable rps0 irqs */ |
| 436 | SAA7146_IER_ENABLE(dev, MASK_27); |
| 437 | |
| 438 | vv->video_fh = fh; |
| 439 | vv->video_status = STATUS_CAPTURE; |
| 440 | |
| 441 | return 0; |
| 442 | } |
| 443 | |
| 444 | static int video_end(struct saa7146_fh *fh, struct file *file) |
| 445 | { |
| 446 | struct saa7146_dev *dev = fh->dev; |
| 447 | struct saa7146_vv *vv = dev->vv_data; |
| 448 | struct saa7146_format *fmt = NULL; |
| 449 | unsigned long flags; |
| 450 | unsigned int resource; |
| 451 | u32 dmas = 0; |
| 452 | DEB_EE(("dev:%p, fh:%p\n",dev,fh)); |
| 453 | |
| 454 | if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { |
| 455 | DEB_S(("not capturing.\n")); |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | if (vv->video_fh != fh) { |
| 460 | DEB_S(("capturing, but in another open.\n")); |
| 461 | return -EBUSY; |
| 462 | } |
| 463 | |
Mauro Carvalho Chehab | a757ee2 | 2010-12-02 01:57:03 -0200 | [diff] [blame] | 464 | fmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | /* we need to have a valid format set here */ |
| 466 | BUG_ON(NULL == fmt); |
| 467 | |
| 468 | if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { |
| 469 | resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; |
| 470 | dmas = MASK_22 | MASK_21 | MASK_20; |
| 471 | } else { |
| 472 | resource = RESOURCE_DMA1_HPS; |
| 473 | dmas = MASK_22; |
| 474 | } |
| 475 | spin_lock_irqsave(&dev->slock,flags); |
| 476 | |
| 477 | /* disable rps0 */ |
| 478 | saa7146_write(dev, MC1, MASK_28); |
| 479 | |
| 480 | /* disable rps0 irqs */ |
| 481 | SAA7146_IER_DISABLE(dev, MASK_27); |
| 482 | |
| 483 | /* shut down all used video dma transfers */ |
| 484 | saa7146_write(dev, MC1, dmas); |
| 485 | |
| 486 | spin_unlock_irqrestore(&dev->slock, flags); |
| 487 | |
| 488 | vv->video_fh = NULL; |
| 489 | vv->video_status = 0; |
| 490 | |
| 491 | saa7146_res_free(fh, resource); |
| 492 | |
| 493 | if (vv->ov_suspend != NULL) { |
| 494 | saa7146_start_preview(vv->ov_suspend); |
| 495 | vv->ov_suspend = NULL; |
| 496 | } |
| 497 | |
| 498 | return 0; |
| 499 | } |
| 500 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 501 | static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | { |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 503 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 504 | |
| 505 | strcpy((char *)cap->driver, "saa7146 v4l2"); |
| 506 | strlcpy((char *)cap->card, dev->ext->name, sizeof(cap->card)); |
| 507 | sprintf((char *)cap->bus_info, "PCI:%s", pci_name(dev->pci)); |
| 508 | cap->version = SAA7146_VERSION_CODE; |
| 509 | cap->capabilities = |
| 510 | V4L2_CAP_VIDEO_CAPTURE | |
| 511 | V4L2_CAP_VIDEO_OVERLAY | |
| 512 | V4L2_CAP_READWRITE | |
| 513 | V4L2_CAP_STREAMING; |
| 514 | cap->capabilities |= dev->ext_vv_data->capabilities; |
| 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | static int vidioc_g_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb) |
| 519 | { |
| 520 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | struct saa7146_vv *vv = dev->vv_data; |
| 522 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 523 | *fb = vv->ov_fb; |
| 524 | fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; |
| 525 | return 0; |
| 526 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 528 | static int vidioc_s_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb) |
| 529 | { |
| 530 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 531 | struct saa7146_vv *vv = dev->vv_data; |
| 532 | struct saa7146_format *fmt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 534 | DEB_EE(("VIDIOC_S_FBUF\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 536 | if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO)) |
| 537 | return -EPERM; |
| 538 | |
| 539 | /* check args */ |
Mauro Carvalho Chehab | a757ee2 | 2010-12-02 01:57:03 -0200 | [diff] [blame] | 540 | fmt = saa7146_format_by_fourcc(dev, fb->fmt.pixelformat); |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 541 | if (NULL == fmt) |
| 542 | return -EINVAL; |
| 543 | |
| 544 | /* planar formats are not allowed for overlay video, clipping and video dma would clash */ |
| 545 | if (fmt->flags & FORMAT_IS_PLANAR) |
| 546 | DEB_S(("planar pixelformat '%4.4s' not allowed for overlay\n", |
| 547 | (char *)&fmt->pixelformat)); |
| 548 | |
| 549 | /* check if overlay is running */ |
| 550 | if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 551 | if (vv->video_fh != fh) { |
| 552 | DEB_D(("refusing to change framebuffer informations while overlay is active in another open.\n")); |
| 553 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | } |
| 555 | } |
| 556 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 557 | /* ok, accept it */ |
| 558 | vv->ov_fb = *fb; |
| 559 | vv->ov_fmt = fmt; |
Michael Hunold | 84a1d9c | 2010-03-13 11:45:46 -0300 | [diff] [blame] | 560 | |
| 561 | if (vv->ov_fb.fmt.bytesperline < vv->ov_fb.fmt.width) { |
| 562 | vv->ov_fb.fmt.bytesperline = vv->ov_fb.fmt.width * fmt->depth / 8; |
| 563 | DEB_D(("setting bytesperline to %d\n", vv->ov_fb.fmt.bytesperline)); |
| 564 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 565 | return 0; |
| 566 | } |
| 567 | |
| 568 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f) |
| 569 | { |
| 570 | if (f->index >= NUM_FORMATS) |
| 571 | return -EINVAL; |
| 572 | strlcpy((char *)f->description, formats[f->index].name, |
| 573 | sizeof(f->description)); |
| 574 | f->pixelformat = formats[f->index].pixelformat; |
| 575 | return 0; |
| 576 | } |
| 577 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 578 | static int vidioc_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *c) |
| 579 | { |
| 580 | const struct v4l2_queryctrl *ctrl; |
| 581 | |
| 582 | if ((c->id < V4L2_CID_BASE || |
| 583 | c->id >= V4L2_CID_LASTP1) && |
| 584 | (c->id < V4L2_CID_PRIVATE_BASE || |
| 585 | c->id >= V4L2_CID_PRIVATE_LASTP1)) |
| 586 | return -EINVAL; |
| 587 | |
| 588 | ctrl = ctrl_by_id(c->id); |
| 589 | if (ctrl == NULL) |
| 590 | return -EINVAL; |
| 591 | |
| 592 | DEB_EE(("VIDIOC_QUERYCTRL: id:%d\n", c->id)); |
| 593 | *c = *ctrl; |
| 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *c) |
| 598 | { |
| 599 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 600 | struct saa7146_vv *vv = dev->vv_data; |
| 601 | const struct v4l2_queryctrl *ctrl; |
| 602 | u32 value = 0; |
| 603 | |
| 604 | ctrl = ctrl_by_id(c->id); |
| 605 | if (NULL == ctrl) |
| 606 | return -EINVAL; |
| 607 | switch (c->id) { |
| 608 | case V4L2_CID_BRIGHTNESS: |
| 609 | value = saa7146_read(dev, BCS_CTRL); |
| 610 | c->value = 0xff & (value >> 24); |
| 611 | DEB_D(("V4L2_CID_BRIGHTNESS: %d\n", c->value)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | break; |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 613 | case V4L2_CID_CONTRAST: |
| 614 | value = saa7146_read(dev, BCS_CTRL); |
| 615 | c->value = 0x7f & (value >> 16); |
| 616 | DEB_D(("V4L2_CID_CONTRAST: %d\n", c->value)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | break; |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 618 | case V4L2_CID_SATURATION: |
| 619 | value = saa7146_read(dev, BCS_CTRL); |
| 620 | c->value = 0x7f & (value >> 0); |
| 621 | DEB_D(("V4L2_CID_SATURATION: %d\n", c->value)); |
| 622 | break; |
| 623 | case V4L2_CID_VFLIP: |
| 624 | c->value = vv->vflip; |
| 625 | DEB_D(("V4L2_CID_VFLIP: %d\n", c->value)); |
| 626 | break; |
| 627 | case V4L2_CID_HFLIP: |
| 628 | c->value = vv->hflip; |
| 629 | DEB_D(("V4L2_CID_HFLIP: %d\n", c->value)); |
| 630 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | default: |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 632 | return -EINVAL; |
| 633 | } |
| 634 | return 0; |
| 635 | } |
| 636 | |
| 637 | static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *c) |
| 638 | { |
| 639 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 640 | struct saa7146_vv *vv = dev->vv_data; |
| 641 | const struct v4l2_queryctrl *ctrl; |
| 642 | |
| 643 | ctrl = ctrl_by_id(c->id); |
| 644 | if (NULL == ctrl) { |
| 645 | DEB_D(("unknown control %d\n", c->id)); |
| 646 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | } |
| 648 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 649 | switch (ctrl->type) { |
| 650 | case V4L2_CTRL_TYPE_BOOLEAN: |
| 651 | case V4L2_CTRL_TYPE_MENU: |
| 652 | case V4L2_CTRL_TYPE_INTEGER: |
| 653 | if (c->value < ctrl->minimum) |
| 654 | c->value = ctrl->minimum; |
| 655 | if (c->value > ctrl->maximum) |
| 656 | c->value = ctrl->maximum; |
| 657 | break; |
| 658 | default: |
| 659 | /* nothing */; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 662 | switch (c->id) { |
| 663 | case V4L2_CID_BRIGHTNESS: { |
| 664 | u32 value = saa7146_read(dev, BCS_CTRL); |
| 665 | value &= 0x00ffffff; |
| 666 | value |= (c->value << 24); |
| 667 | saa7146_write(dev, BCS_CTRL, value); |
| 668 | saa7146_write(dev, MC2, MASK_22 | MASK_06); |
| 669 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 671 | case V4L2_CID_CONTRAST: { |
| 672 | u32 value = saa7146_read(dev, BCS_CTRL); |
| 673 | value &= 0xff00ffff; |
| 674 | value |= (c->value << 16); |
| 675 | saa7146_write(dev, BCS_CTRL, value); |
| 676 | saa7146_write(dev, MC2, MASK_22 | MASK_06); |
| 677 | break; |
| 678 | } |
| 679 | case V4L2_CID_SATURATION: { |
| 680 | u32 value = saa7146_read(dev, BCS_CTRL); |
| 681 | value &= 0xffffff00; |
| 682 | value |= (c->value << 0); |
| 683 | saa7146_write(dev, BCS_CTRL, value); |
| 684 | saa7146_write(dev, MC2, MASK_22 | MASK_06); |
| 685 | break; |
| 686 | } |
| 687 | case V4L2_CID_HFLIP: |
| 688 | /* fixme: we can support changing VFLIP and HFLIP here... */ |
| 689 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 690 | DEB_D(("V4L2_CID_HFLIP while active capture.\n")); |
Hans Verkuil | 5a5b964 | 2009-02-07 11:25:05 -0300 | [diff] [blame] | 691 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 693 | vv->hflip = c->value; |
| 694 | break; |
| 695 | case V4L2_CID_VFLIP: |
| 696 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 697 | DEB_D(("V4L2_CID_VFLIP while active capture.\n")); |
Hans Verkuil | 5a5b964 | 2009-02-07 11:25:05 -0300 | [diff] [blame] | 698 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 700 | vv->vflip = c->value; |
| 701 | break; |
| 702 | default: |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 703 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 706 | if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 707 | saa7146_stop_preview(fh); |
| 708 | saa7146_start_preview(fh); |
| 709 | } |
| 710 | return 0; |
| 711 | } |
| 712 | |
| 713 | static int vidioc_g_parm(struct file *file, void *fh, |
| 714 | struct v4l2_streamparm *parm) |
| 715 | { |
Trent Piepho | 717167e | 2009-03-04 01:21:03 -0300 | [diff] [blame] | 716 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 717 | struct saa7146_vv *vv = dev->vv_data; |
| 718 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 719 | parm->parm.capture.readbuffers = 1; |
Trent Piepho | 717167e | 2009-03-04 01:21:03 -0300 | [diff] [blame] | 720 | v4l2_video_std_frame_period(vv->standard->id, |
| 721 | &parm->parm.capture.timeperframe); |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 722 | return 0; |
| 723 | } |
| 724 | |
| 725 | static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) |
| 726 | { |
| 727 | f->fmt.pix = ((struct saa7146_fh *)fh)->video_fmt; |
| 728 | return 0; |
| 729 | } |
| 730 | |
| 731 | static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) |
| 732 | { |
| 733 | f->fmt.win = ((struct saa7146_fh *)fh)->ov.win; |
| 734 | return 0; |
| 735 | } |
| 736 | |
| 737 | static int vidioc_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f) |
| 738 | { |
| 739 | f->fmt.vbi = ((struct saa7146_fh *)fh)->vbi_fmt; |
| 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) |
| 744 | { |
| 745 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 746 | struct saa7146_vv *vv = dev->vv_data; |
| 747 | struct saa7146_format *fmt; |
| 748 | enum v4l2_field field; |
| 749 | int maxw, maxh; |
| 750 | int calc_bpl; |
| 751 | |
| 752 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh)); |
| 753 | |
Mauro Carvalho Chehab | a757ee2 | 2010-12-02 01:57:03 -0200 | [diff] [blame] | 754 | fmt = saa7146_format_by_fourcc(dev, f->fmt.pix.pixelformat); |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 755 | if (NULL == fmt) |
| 756 | return -EINVAL; |
| 757 | |
| 758 | field = f->fmt.pix.field; |
| 759 | maxw = vv->standard->h_max_out; |
| 760 | maxh = vv->standard->v_max_out; |
| 761 | |
| 762 | if (V4L2_FIELD_ANY == field) { |
| 763 | field = (f->fmt.pix.height > maxh / 2) |
| 764 | ? V4L2_FIELD_INTERLACED |
| 765 | : V4L2_FIELD_BOTTOM; |
| 766 | } |
| 767 | switch (field) { |
| 768 | case V4L2_FIELD_ALTERNATE: |
| 769 | vv->last_field = V4L2_FIELD_TOP; |
| 770 | maxh = maxh / 2; |
| 771 | break; |
| 772 | case V4L2_FIELD_TOP: |
| 773 | case V4L2_FIELD_BOTTOM: |
| 774 | vv->last_field = V4L2_FIELD_INTERLACED; |
| 775 | maxh = maxh / 2; |
| 776 | break; |
| 777 | case V4L2_FIELD_INTERLACED: |
| 778 | vv->last_field = V4L2_FIELD_INTERLACED; |
| 779 | break; |
| 780 | default: |
| 781 | DEB_D(("no known field mode '%d'.\n", field)); |
| 782 | return -EINVAL; |
| 783 | } |
| 784 | |
| 785 | f->fmt.pix.field = field; |
| 786 | if (f->fmt.pix.width > maxw) |
| 787 | f->fmt.pix.width = maxw; |
| 788 | if (f->fmt.pix.height > maxh) |
| 789 | f->fmt.pix.height = maxh; |
| 790 | |
| 791 | calc_bpl = (f->fmt.pix.width * fmt->depth) / 8; |
| 792 | |
| 793 | if (f->fmt.pix.bytesperline < calc_bpl) |
| 794 | f->fmt.pix.bytesperline = calc_bpl; |
| 795 | |
| 796 | if (f->fmt.pix.bytesperline > (2 * PAGE_SIZE * fmt->depth) / 8) /* arbitrary constraint */ |
| 797 | f->fmt.pix.bytesperline = calc_bpl; |
| 798 | |
| 799 | f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; |
| 800 | DEB_D(("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n", f->fmt.pix.width, |
| 801 | f->fmt.pix.height, f->fmt.pix.bytesperline, f->fmt.pix.sizeimage)); |
| 802 | |
| 803 | return 0; |
| 804 | } |
| 805 | |
| 806 | |
| 807 | static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) |
| 808 | { |
| 809 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 810 | struct saa7146_vv *vv = dev->vv_data; |
| 811 | struct v4l2_window *win = &f->fmt.win; |
| 812 | enum v4l2_field field; |
| 813 | int maxw, maxh; |
| 814 | |
| 815 | DEB_EE(("dev:%p\n", dev)); |
| 816 | |
| 817 | if (NULL == vv->ov_fb.base) { |
| 818 | DEB_D(("no fb base set.\n")); |
| 819 | return -EINVAL; |
| 820 | } |
| 821 | if (NULL == vv->ov_fmt) { |
| 822 | DEB_D(("no fb fmt set.\n")); |
| 823 | return -EINVAL; |
| 824 | } |
| 825 | if (win->w.width < 48 || win->w.height < 32) { |
| 826 | DEB_D(("min width/height. (%d,%d)\n", win->w.width, win->w.height)); |
| 827 | return -EINVAL; |
| 828 | } |
| 829 | if (win->clipcount > 16) { |
| 830 | DEB_D(("clipcount too big.\n")); |
| 831 | return -EINVAL; |
| 832 | } |
| 833 | |
| 834 | field = win->field; |
| 835 | maxw = vv->standard->h_max_out; |
| 836 | maxh = vv->standard->v_max_out; |
| 837 | |
| 838 | if (V4L2_FIELD_ANY == field) { |
| 839 | field = (win->w.height > maxh / 2) |
| 840 | ? V4L2_FIELD_INTERLACED |
| 841 | : V4L2_FIELD_TOP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 843 | switch (field) { |
| 844 | case V4L2_FIELD_TOP: |
| 845 | case V4L2_FIELD_BOTTOM: |
| 846 | case V4L2_FIELD_ALTERNATE: |
| 847 | maxh = maxh / 2; |
| 848 | break; |
| 849 | case V4L2_FIELD_INTERLACED: |
| 850 | break; |
| 851 | default: |
| 852 | DEB_D(("no known field mode '%d'.\n", field)); |
| 853 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 856 | win->field = field; |
| 857 | if (win->w.width > maxw) |
| 858 | win->w.width = maxw; |
| 859 | if (win->w.height > maxh) |
| 860 | win->w.height = maxh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 862 | return 0; |
| 863 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 865 | static int vidioc_s_fmt_vid_cap(struct file *file, void *__fh, struct v4l2_format *f) |
| 866 | { |
| 867 | struct saa7146_fh *fh = __fh; |
| 868 | struct saa7146_dev *dev = fh->dev; |
| 869 | struct saa7146_vv *vv = dev->vv_data; |
| 870 | int err; |
| 871 | |
| 872 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh)); |
| 873 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 874 | DEB_EE(("streaming capture is active\n")); |
| 875 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 877 | err = vidioc_try_fmt_vid_cap(file, fh, f); |
| 878 | if (0 != err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | return err; |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 880 | fh->video_fmt = f->fmt.pix; |
| 881 | DEB_EE(("set to pixelformat '%4.4s'\n", (char *)&fh->video_fmt.pixelformat)); |
| 882 | return 0; |
| 883 | } |
| 884 | |
| 885 | static int vidioc_s_fmt_vid_overlay(struct file *file, void *__fh, struct v4l2_format *f) |
| 886 | { |
| 887 | struct saa7146_fh *fh = __fh; |
| 888 | struct saa7146_dev *dev = fh->dev; |
| 889 | struct saa7146_vv *vv = dev->vv_data; |
| 890 | int err; |
| 891 | |
| 892 | DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n", dev, fh)); |
| 893 | err = vidioc_try_fmt_vid_overlay(file, fh, f); |
| 894 | if (0 != err) |
| 895 | return err; |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 896 | fh->ov.win = f->fmt.win; |
| 897 | fh->ov.nclips = f->fmt.win.clipcount; |
| 898 | if (fh->ov.nclips > 16) |
| 899 | fh->ov.nclips = 16; |
| 900 | if (copy_from_user(fh->ov.clips, f->fmt.win.clips, |
| 901 | sizeof(struct v4l2_clip) * fh->ov.nclips)) { |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 902 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 904 | |
| 905 | /* fh->ov.fh is used to indicate that we have valid overlay informations, too */ |
| 906 | fh->ov.fh = fh; |
| 907 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 908 | /* check if our current overlay is active */ |
| 909 | if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 910 | saa7146_stop_preview(fh); |
| 911 | saa7146_start_preview(fh); |
Mauro Carvalho Chehab | afd1a0c | 2005-12-12 00:37:27 -0800 | [diff] [blame] | 912 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 913 | return 0; |
| 914 | } |
| 915 | |
| 916 | static int vidioc_g_std(struct file *file, void *fh, v4l2_std_id *norm) |
| 917 | { |
| 918 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 919 | struct saa7146_vv *vv = dev->vv_data; |
| 920 | |
| 921 | *norm = vv->standard->id; |
| 922 | return 0; |
| 923 | } |
| 924 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | /* the saa7146 supfhrts (used in conjunction with the saa7111a for example) |
| 926 | PAL / NTSC / SECAM. if your hardware does not (or does more) |
| 927 | -- override this function in your extension */ |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 928 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | case VIDIOC_ENUMSTD: |
| 930 | { |
| 931 | struct v4l2_standard *e = arg; |
| 932 | if (e->index < 0 ) |
| 933 | return -EINVAL; |
| 934 | if( e->index < dev->ext_vv_data->num_stds ) { |
| 935 | DEB_EE(("VIDIOC_ENUMSTD: index:%d\n",e->index)); |
| 936 | v4l2_video_std_construct(e, dev->ext_vv_data->stds[e->index].id, dev->ext_vv_data->stds[e->index].name); |
| 937 | return 0; |
| 938 | } |
| 939 | return -EINVAL; |
| 940 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 941 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 943 | static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id *id) |
| 944 | { |
| 945 | struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; |
| 946 | struct saa7146_vv *vv = dev->vv_data; |
| 947 | int found = 0; |
| 948 | int err, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 950 | DEB_EE(("VIDIOC_S_STD\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 952 | if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) { |
| 953 | DEB_D(("cannot change video standard while streaming capture is active\n")); |
| 954 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 957 | if ((vv->video_status & STATUS_OVERLAY) != 0) { |
| 958 | vv->ov_suspend = vv->video_fh; |
| 959 | err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | if (0 != err) { |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 961 | DEB_D(("suspending video failed. aborting\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | return err; |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 963 | } |
| 964 | } |
Brandon Philips | 49ee718 | 2007-10-05 16:26:27 -0300 | [diff] [blame] | 965 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 966 | for (i = 0; i < dev->ext_vv_data->num_stds; i++) |
| 967 | if (*id & dev->ext_vv_data->stds[i].id) |
| 968 | break; |
| 969 | if (i != dev->ext_vv_data->num_stds) { |
| 970 | vv->standard = &dev->ext_vv_data->stds[i]; |
| 971 | if (NULL != dev->ext_vv_data->std_callback) |
| 972 | dev->ext_vv_data->std_callback(dev, vv->standard); |
| 973 | found = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 975 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 976 | if (vv->ov_suspend != NULL) { |
| 977 | saa7146_start_preview(vv->ov_suspend); |
| 978 | vv->ov_suspend = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | } |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 980 | |
| 981 | if (!found) { |
| 982 | DEB_EE(("VIDIOC_S_STD: standard not found.\n")); |
| 983 | return -EINVAL; |
| 984 | } |
| 985 | |
| 986 | DEB_EE(("VIDIOC_S_STD: set to standard to '%s'\n", vv->standard->name)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | return 0; |
| 988 | } |
| 989 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 990 | static int vidioc_overlay(struct file *file, void *fh, unsigned int on) |
| 991 | { |
| 992 | int err; |
| 993 | |
| 994 | DEB_D(("VIDIOC_OVERLAY on:%d\n", on)); |
| 995 | if (on) |
| 996 | err = saa7146_start_preview(fh); |
| 997 | else |
| 998 | err = saa7146_stop_preview(fh); |
| 999 | return err; |
| 1000 | } |
| 1001 | |
| 1002 | static int vidioc_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *b) |
| 1003 | { |
| 1004 | struct saa7146_fh *fh = __fh; |
| 1005 | |
| 1006 | if (b->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1007 | return videobuf_reqbufs(&fh->video_q, b); |
| 1008 | if (b->type == V4L2_BUF_TYPE_VBI_CAPTURE) |
| 1009 | return videobuf_reqbufs(&fh->vbi_q, b); |
| 1010 | return -EINVAL; |
| 1011 | } |
| 1012 | |
| 1013 | static int vidioc_querybuf(struct file *file, void *__fh, struct v4l2_buffer *buf) |
| 1014 | { |
| 1015 | struct saa7146_fh *fh = __fh; |
| 1016 | |
| 1017 | if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1018 | return videobuf_querybuf(&fh->video_q, buf); |
| 1019 | if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) |
| 1020 | return videobuf_querybuf(&fh->vbi_q, buf); |
| 1021 | return -EINVAL; |
| 1022 | } |
| 1023 | |
| 1024 | static int vidioc_qbuf(struct file *file, void *__fh, struct v4l2_buffer *buf) |
| 1025 | { |
| 1026 | struct saa7146_fh *fh = __fh; |
| 1027 | |
| 1028 | if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1029 | return videobuf_qbuf(&fh->video_q, buf); |
| 1030 | if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) |
| 1031 | return videobuf_qbuf(&fh->vbi_q, buf); |
| 1032 | return -EINVAL; |
| 1033 | } |
| 1034 | |
| 1035 | static int vidioc_dqbuf(struct file *file, void *__fh, struct v4l2_buffer *buf) |
| 1036 | { |
| 1037 | struct saa7146_fh *fh = __fh; |
| 1038 | |
| 1039 | if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1040 | return videobuf_dqbuf(&fh->video_q, buf, file->f_flags & O_NONBLOCK); |
| 1041 | if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) |
| 1042 | return videobuf_dqbuf(&fh->vbi_q, buf, file->f_flags & O_NONBLOCK); |
| 1043 | return -EINVAL; |
| 1044 | } |
| 1045 | |
| 1046 | static int vidioc_streamon(struct file *file, void *__fh, enum v4l2_buf_type type) |
| 1047 | { |
| 1048 | struct saa7146_fh *fh = __fh; |
| 1049 | int err; |
| 1050 | |
| 1051 | DEB_D(("VIDIOC_STREAMON, type:%d\n", type)); |
| 1052 | |
| 1053 | err = video_begin(fh); |
| 1054 | if (err) |
| 1055 | return err; |
| 1056 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1057 | return videobuf_streamon(&fh->video_q); |
| 1058 | if (type == V4L2_BUF_TYPE_VBI_CAPTURE) |
| 1059 | return videobuf_streamon(&fh->vbi_q); |
| 1060 | return -EINVAL; |
| 1061 | } |
| 1062 | |
| 1063 | static int vidioc_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type) |
| 1064 | { |
| 1065 | struct saa7146_fh *fh = __fh; |
| 1066 | struct saa7146_dev *dev = fh->dev; |
| 1067 | struct saa7146_vv *vv = dev->vv_data; |
| 1068 | int err; |
| 1069 | |
| 1070 | DEB_D(("VIDIOC_STREAMOFF, type:%d\n", type)); |
| 1071 | |
| 1072 | /* ugly: we need to copy some checks from video_end(), |
| 1073 | because videobuf_streamoff() relies on the capture running. |
| 1074 | check and fix this */ |
| 1075 | if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { |
| 1076 | DEB_S(("not capturing.\n")); |
| 1077 | return 0; |
| 1078 | } |
| 1079 | |
| 1080 | if (vv->video_fh != fh) { |
| 1081 | DEB_S(("capturing, but in another open.\n")); |
| 1082 | return -EBUSY; |
| 1083 | } |
| 1084 | |
| 1085 | err = -EINVAL; |
| 1086 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1087 | err = videobuf_streamoff(&fh->video_q); |
| 1088 | else if (type == V4L2_BUF_TYPE_VBI_CAPTURE) |
| 1089 | err = videobuf_streamoff(&fh->vbi_q); |
| 1090 | if (0 != err) { |
| 1091 | DEB_D(("warning: videobuf_streamoff() failed.\n")); |
| 1092 | video_end(fh, file); |
| 1093 | } else { |
| 1094 | err = video_end(fh, file); |
| 1095 | } |
| 1096 | return err; |
| 1097 | } |
| 1098 | |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 1099 | static int vidioc_g_chip_ident(struct file *file, void *__fh, |
| 1100 | struct v4l2_dbg_chip_ident *chip) |
| 1101 | { |
| 1102 | struct saa7146_fh *fh = __fh; |
| 1103 | struct saa7146_dev *dev = fh->dev; |
| 1104 | |
| 1105 | chip->ident = V4L2_IDENT_NONE; |
| 1106 | chip->revision = 0; |
Hans Verkuil | eae4d69 | 2009-02-07 20:15:22 -0300 | [diff] [blame] | 1107 | if (chip->match.type == V4L2_CHIP_MATCH_HOST && !chip->match.addr) { |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 1108 | chip->ident = V4L2_IDENT_SAA7146; |
| 1109 | return 0; |
| 1110 | } |
| 1111 | return v4l2_device_call_until_err(&dev->v4l2_dev, 0, |
| 1112 | core, g_chip_ident, chip); |
| 1113 | } |
| 1114 | |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 1115 | const struct v4l2_ioctl_ops saa7146_video_ioctl_ops = { |
| 1116 | .vidioc_querycap = vidioc_querycap, |
| 1117 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
Trent Piepho | 717167e | 2009-03-04 01:21:03 -0300 | [diff] [blame] | 1118 | .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_cap, |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 1119 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, |
| 1120 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, |
| 1121 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, |
| 1122 | .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay, |
| 1123 | .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay, |
| 1124 | .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay, |
| 1125 | .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, |
Hans Verkuil | 1b8dac1 | 2009-02-07 11:18:05 -0300 | [diff] [blame] | 1126 | .vidioc_g_chip_ident = vidioc_g_chip_ident, |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 1127 | |
| 1128 | .vidioc_overlay = vidioc_overlay, |
| 1129 | .vidioc_g_fbuf = vidioc_g_fbuf, |
| 1130 | .vidioc_s_fbuf = vidioc_s_fbuf, |
| 1131 | .vidioc_reqbufs = vidioc_reqbufs, |
| 1132 | .vidioc_querybuf = vidioc_querybuf, |
| 1133 | .vidioc_qbuf = vidioc_qbuf, |
| 1134 | .vidioc_dqbuf = vidioc_dqbuf, |
| 1135 | .vidioc_g_std = vidioc_g_std, |
| 1136 | .vidioc_s_std = vidioc_s_std, |
| 1137 | .vidioc_queryctrl = vidioc_queryctrl, |
| 1138 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 1139 | .vidioc_s_ctrl = vidioc_s_ctrl, |
| 1140 | .vidioc_streamon = vidioc_streamon, |
| 1141 | .vidioc_streamoff = vidioc_streamoff, |
| 1142 | .vidioc_g_parm = vidioc_g_parm, |
Hans Verkuil | b960074 | 2009-01-18 19:59:11 -0300 | [diff] [blame] | 1143 | }; |
| 1144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | /*********************************************************************************/ |
| 1146 | /* buffer handling functions */ |
| 1147 | |
| 1148 | static int buffer_activate (struct saa7146_dev *dev, |
| 1149 | struct saa7146_buf *buf, |
| 1150 | struct saa7146_buf *next) |
| 1151 | { |
| 1152 | struct saa7146_vv *vv = dev->vv_data; |
| 1153 | |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 1154 | buf->vb.state = VIDEOBUF_ACTIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | saa7146_set_capture(dev,buf,next); |
| 1156 | |
| 1157 | mod_timer(&vv->video_q.timeout, jiffies+BUFFER_TIMEOUT); |
| 1158 | return 0; |
| 1159 | } |
| 1160 | |
Johann Friedrichs | 311c70e | 2009-10-07 04:41:37 -0300 | [diff] [blame] | 1161 | static void release_all_pagetables(struct saa7146_dev *dev, struct saa7146_buf *buf) |
| 1162 | { |
| 1163 | saa7146_pgtable_free(dev->pci, &buf->pt[0]); |
| 1164 | saa7146_pgtable_free(dev->pci, &buf->pt[1]); |
| 1165 | saa7146_pgtable_free(dev->pci, &buf->pt[2]); |
| 1166 | } |
| 1167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | static int buffer_prepare(struct videobuf_queue *q, |
| 1169 | struct videobuf_buffer *vb, enum v4l2_field field) |
| 1170 | { |
| 1171 | struct file *file = q->priv_data; |
| 1172 | struct saa7146_fh *fh = file->private_data; |
| 1173 | struct saa7146_dev *dev = fh->dev; |
| 1174 | struct saa7146_vv *vv = dev->vv_data; |
| 1175 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; |
| 1176 | int size,err = 0; |
| 1177 | |
| 1178 | DEB_CAP(("vbuf:%p\n",vb)); |
| 1179 | |
| 1180 | /* sanity checks */ |
| 1181 | if (fh->video_fmt.width < 48 || |
| 1182 | fh->video_fmt.height < 32 || |
| 1183 | fh->video_fmt.width > vv->standard->h_max_out || |
| 1184 | fh->video_fmt.height > vv->standard->v_max_out) { |
| 1185 | DEB_D(("w (%d) / h (%d) out of bounds.\n",fh->video_fmt.width,fh->video_fmt.height)); |
| 1186 | return -EINVAL; |
| 1187 | } |
| 1188 | |
| 1189 | size = fh->video_fmt.sizeimage; |
| 1190 | if (0 != buf->vb.baddr && buf->vb.bsize < size) { |
| 1191 | DEB_D(("size mismatch.\n")); |
| 1192 | return -EINVAL; |
| 1193 | } |
| 1194 | |
| 1195 | DEB_CAP(("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n", |
| 1196 | fh->video_fmt.width,fh->video_fmt.height,size,v4l2_field_names[fh->video_fmt.field])); |
| 1197 | if (buf->vb.width != fh->video_fmt.width || |
| 1198 | buf->vb.bytesperline != fh->video_fmt.bytesperline || |
| 1199 | buf->vb.height != fh->video_fmt.height || |
| 1200 | buf->vb.size != size || |
| 1201 | buf->vb.field != field || |
| 1202 | buf->vb.field != fh->video_fmt.field || |
| 1203 | buf->fmt != &fh->video_fmt) { |
Mauro Carvalho Chehab | c7b0ac0 | 2006-03-10 12:29:15 -0300 | [diff] [blame] | 1204 | saa7146_dma_free(dev,q,buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | } |
| 1206 | |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 1207 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | struct saa7146_format *sfmt; |
| 1209 | |
| 1210 | buf->vb.bytesperline = fh->video_fmt.bytesperline; |
| 1211 | buf->vb.width = fh->video_fmt.width; |
| 1212 | buf->vb.height = fh->video_fmt.height; |
| 1213 | buf->vb.size = size; |
| 1214 | buf->vb.field = field; |
| 1215 | buf->fmt = &fh->video_fmt; |
| 1216 | buf->vb.field = fh->video_fmt.field; |
| 1217 | |
Mauro Carvalho Chehab | a757ee2 | 2010-12-02 01:57:03 -0200 | [diff] [blame] | 1218 | sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | |
Johann Friedrichs | 311c70e | 2009-10-07 04:41:37 -0300 | [diff] [blame] | 1220 | release_all_pagetables(dev, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | if( 0 != IS_PLANAR(sfmt->trans)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); |
| 1223 | saa7146_pgtable_alloc(dev->pci, &buf->pt[1]); |
| 1224 | saa7146_pgtable_alloc(dev->pci, &buf->pt[2]); |
| 1225 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); |
| 1227 | } |
| 1228 | |
Mauro Carvalho Chehab | c7b0ac0 | 2006-03-10 12:29:15 -0300 | [diff] [blame] | 1229 | err = videobuf_iolock(q,&buf->vb, &vv->ov_fb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | if (err) |
| 1231 | goto oops; |
| 1232 | err = saa7146_pgtable_build(dev,buf); |
| 1233 | if (err) |
| 1234 | goto oops; |
| 1235 | } |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 1236 | buf->vb.state = VIDEOBUF_PREPARED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | buf->activate = buffer_activate; |
| 1238 | |
| 1239 | return 0; |
| 1240 | |
| 1241 | oops: |
| 1242 | DEB_D(("error out.\n")); |
Mauro Carvalho Chehab | c7b0ac0 | 2006-03-10 12:29:15 -0300 | [diff] [blame] | 1243 | saa7146_dma_free(dev,q,buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | |
| 1245 | return err; |
| 1246 | } |
| 1247 | |
| 1248 | static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) |
| 1249 | { |
| 1250 | struct file *file = q->priv_data; |
| 1251 | struct saa7146_fh *fh = file->private_data; |
| 1252 | |
| 1253 | if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS) |
| 1254 | *count = MAX_SAA7146_CAPTURE_BUFFERS; |
| 1255 | |
| 1256 | *size = fh->video_fmt.sizeimage; |
| 1257 | |
| 1258 | /* check if we exceed the "max_memory" parameter */ |
| 1259 | if( (*count * *size) > (max_memory*1048576) ) { |
| 1260 | *count = (max_memory*1048576) / *size; |
| 1261 | } |
| 1262 | |
| 1263 | DEB_CAP(("%d buffers, %d bytes each.\n",*count,*size)); |
| 1264 | |
| 1265 | return 0; |
| 1266 | } |
| 1267 | |
| 1268 | static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) |
| 1269 | { |
| 1270 | struct file *file = q->priv_data; |
| 1271 | struct saa7146_fh *fh = file->private_data; |
| 1272 | struct saa7146_dev *dev = fh->dev; |
| 1273 | struct saa7146_vv *vv = dev->vv_data; |
| 1274 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; |
| 1275 | |
| 1276 | DEB_CAP(("vbuf:%p\n",vb)); |
| 1277 | saa7146_buffer_queue(fh->dev,&vv->video_q,buf); |
| 1278 | } |
| 1279 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) |
| 1281 | { |
| 1282 | struct file *file = q->priv_data; |
| 1283 | struct saa7146_fh *fh = file->private_data; |
| 1284 | struct saa7146_dev *dev = fh->dev; |
| 1285 | struct saa7146_buf *buf = (struct saa7146_buf *)vb; |
| 1286 | |
| 1287 | DEB_CAP(("vbuf:%p\n",vb)); |
Johann Friedrichs | 311c70e | 2009-10-07 04:41:37 -0300 | [diff] [blame] | 1288 | |
Mauro Carvalho Chehab | c7b0ac0 | 2006-03-10 12:29:15 -0300 | [diff] [blame] | 1289 | saa7146_dma_free(dev,q,buf); |
Mauro Carvalho Chehab | ba9e9f3 | 2010-02-01 21:23:46 -0200 | [diff] [blame] | 1290 | |
| 1291 | release_all_pagetables(dev, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | } |
| 1293 | |
| 1294 | static struct videobuf_queue_ops video_qops = { |
| 1295 | .buf_setup = buffer_setup, |
| 1296 | .buf_prepare = buffer_prepare, |
| 1297 | .buf_queue = buffer_queue, |
| 1298 | .buf_release = buffer_release, |
| 1299 | }; |
| 1300 | |
| 1301 | /********************************************************************************/ |
| 1302 | /* file operations */ |
| 1303 | |
| 1304 | static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv) |
| 1305 | { |
Mauro Carvalho Chehab | afd1a0c | 2005-12-12 00:37:27 -0800 | [diff] [blame] | 1306 | INIT_LIST_HEAD(&vv->video_q.queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | |
| 1308 | init_timer(&vv->video_q.timeout); |
| 1309 | vv->video_q.timeout.function = saa7146_buffer_timeout; |
| 1310 | vv->video_q.timeout.data = (unsigned long)(&vv->video_q); |
| 1311 | vv->video_q.dev = dev; |
| 1312 | |
| 1313 | /* set some default values */ |
| 1314 | vv->standard = &dev->ext_vv_data->stds[0]; |
| 1315 | |
| 1316 | /* FIXME: what's this? */ |
| 1317 | vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A; |
| 1318 | vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A; |
| 1319 | } |
| 1320 | |
| 1321 | |
| 1322 | static int video_open(struct saa7146_dev *dev, struct file *file) |
| 1323 | { |
Joe Perches | abf8438 | 2010-07-12 17:50:03 -0300 | [diff] [blame] | 1324 | struct saa7146_fh *fh = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | struct saa7146_format *sfmt; |
| 1326 | |
| 1327 | fh->video_fmt.width = 384; |
| 1328 | fh->video_fmt.height = 288; |
| 1329 | fh->video_fmt.pixelformat = V4L2_PIX_FMT_BGR24; |
| 1330 | fh->video_fmt.bytesperline = 0; |
| 1331 | fh->video_fmt.field = V4L2_FIELD_ANY; |
Mauro Carvalho Chehab | a757ee2 | 2010-12-02 01:57:03 -0200 | [diff] [blame] | 1332 | sfmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8; |
| 1334 | |
Guennadi Liakhovetski | 0705135 | 2008-04-22 14:42:13 -0300 | [diff] [blame] | 1335 | videobuf_queue_sg_init(&fh->video_q, &video_qops, |
| 1336 | &dev->pci->dev, &dev->slock, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 1338 | V4L2_FIELD_INTERLACED, |
| 1339 | sizeof(struct saa7146_buf), |
Hans Verkuil | 9af3971 | 2010-12-18 09:20:59 -0300 | [diff] [blame] | 1340 | file, &dev->v4l2_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | return 0; |
| 1343 | } |
| 1344 | |
| 1345 | |
| 1346 | static void video_close(struct saa7146_dev *dev, struct file *file) |
| 1347 | { |
Joe Perches | abf8438 | 2010-07-12 17:50:03 -0300 | [diff] [blame] | 1348 | struct saa7146_fh *fh = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | struct saa7146_vv *vv = dev->vv_data; |
Hartmut Birr | 2970c49 | 2007-04-22 06:57:26 -0300 | [diff] [blame] | 1350 | struct videobuf_queue *q = &fh->video_q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | int err; |
| 1352 | |
| 1353 | if (IS_CAPTURE_ACTIVE(fh) != 0) { |
| 1354 | err = video_end(fh, file); |
| 1355 | } else if (IS_OVERLAY_ACTIVE(fh) != 0) { |
| 1356 | err = saa7146_stop_preview(fh); |
| 1357 | } |
| 1358 | |
Brandon Philips | 19bc513 | 2007-11-13 20:05:38 -0300 | [diff] [blame] | 1359 | videobuf_stop(q); |
Hartmut Birr | 2970c49 | 2007-04-22 06:57:26 -0300 | [diff] [blame] | 1360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | /* hmm, why is this function declared void? */ |
| 1362 | /* return err */ |
| 1363 | } |
| 1364 | |
| 1365 | |
| 1366 | static void video_irq_done(struct saa7146_dev *dev, unsigned long st) |
| 1367 | { |
| 1368 | struct saa7146_vv *vv = dev->vv_data; |
| 1369 | struct saa7146_dmaqueue *q = &vv->video_q; |
| 1370 | |
| 1371 | spin_lock(&dev->slock); |
| 1372 | DEB_CAP(("called.\n")); |
| 1373 | |
| 1374 | /* only finish the buffer if we have one... */ |
| 1375 | if( NULL != q->curr ) { |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 1376 | saa7146_buffer_finish(dev,q,VIDEOBUF_DONE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | } |
| 1378 | saa7146_buffer_next(dev,q,0); |
| 1379 | |
| 1380 | spin_unlock(&dev->slock); |
| 1381 | } |
| 1382 | |
| 1383 | static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos) |
| 1384 | { |
| 1385 | struct saa7146_fh *fh = file->private_data; |
| 1386 | struct saa7146_dev *dev = fh->dev; |
| 1387 | struct saa7146_vv *vv = dev->vv_data; |
| 1388 | ssize_t ret = 0; |
| 1389 | |
| 1390 | DEB_EE(("called.\n")); |
| 1391 | |
| 1392 | if ((vv->video_status & STATUS_CAPTURE) != 0) { |
| 1393 | /* fixme: should we allow read() captures while streaming capture? */ |
| 1394 | if (vv->video_fh == fh) { |
| 1395 | DEB_S(("already capturing.\n")); |
| 1396 | return -EBUSY; |
| 1397 | } |
| 1398 | DEB_S(("already capturing in another open.\n")); |
| 1399 | return -EBUSY; |
| 1400 | } |
| 1401 | |
| 1402 | ret = video_begin(fh); |
| 1403 | if( 0 != ret) { |
| 1404 | goto out; |
| 1405 | } |
| 1406 | |
| 1407 | ret = videobuf_read_one(&fh->video_q , data, count, ppos, |
| 1408 | file->f_flags & O_NONBLOCK); |
| 1409 | if (ret != 0) { |
| 1410 | video_end(fh, file); |
| 1411 | } else { |
| 1412 | ret = video_end(fh, file); |
| 1413 | } |
| 1414 | out: |
| 1415 | /* restart overlay if it was active before */ |
| 1416 | if (vv->ov_suspend != NULL) { |
| 1417 | saa7146_start_preview(vv->ov_suspend); |
| 1418 | vv->ov_suspend = NULL; |
| 1419 | } |
| 1420 | |
| 1421 | return ret; |
| 1422 | } |
| 1423 | |
| 1424 | struct saa7146_use_ops saa7146_video_uops = { |
| 1425 | .init = video_init, |
| 1426 | .open = video_open, |
| 1427 | .release = video_close, |
| 1428 | .irq_done = video_irq_done, |
| 1429 | .read = video_read, |
| 1430 | }; |