1 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 2 3 #include <linux/kernel.h> 4 #include <linux/export.h> 5 #include <media/saa7146_vv.h> 6 7 static void calculate_output_format_register(struct saa7146_dev* saa, u32 palette, u32* clip_format) 8 { 9 /* clear out the necessary bits */ 10 *clip_format &= 0x0000ffff; 11 /* set these bits new */ 12 *clip_format |= (( ((palette&0xf00)>>8) << 30) | ((palette&0x00f) << 24) | (((palette&0x0f0)>>4) << 16)); 13 } 14 15 static void calculate_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync, u32* hps_ctrl) 16 { 17 *hps_ctrl &= ~(MASK_30 | MASK_31 | MASK_28); 18 *hps_ctrl |= (source << 30) | (sync << 28); 19 } 20 21 static void calculate_hxo_and_hyo(struct saa7146_vv *vv, u32* hps_h_scale, u32* hps_ctrl) 22 { 23 int hyo = 0, hxo = 0; 24 25 hyo = vv->standard->v_offset; 26 hxo = vv->standard->h_offset; 27 28 *hps_h_scale &= ~(MASK_B0 | 0xf00); 29 *hps_h_scale |= (hxo << 0); 30 31 *hps_ctrl &= ~(MASK_W0 | MASK_B2); 32 *hps_ctrl |= (hyo << 12); 33 } 34 35 /* helper functions for the calculation of the horizontal- and vertical 36 scaling registers, clip-format-register etc ... 37 these functions take pointers to the (most-likely read-out 38 original-values) and manipulate them according to the requested 39 changes. 40 */ 41 42 /* hps_coeff used for CXY and CXUV; scale 1/1 -> scale 1/64 */ 43 static struct { 44 u16 hps_coeff; 45 u16 weight_sum; 46 } hps_h_coeff_tab [] = { 47 {0x00, 2}, {0x02, 4}, {0x00, 4}, {0x06, 8}, {0x02, 8}, 48 {0x08, 8}, {0x00, 8}, {0x1E, 16}, {0x0E, 8}, {0x26, 8}, 49 {0x06, 8}, {0x42, 8}, {0x02, 8}, {0x80, 8}, {0x00, 8}, 50 {0xFE, 16}, {0xFE, 8}, {0x7E, 8}, {0x7E, 8}, {0x3E, 8}, 51 {0x3E, 8}, {0x1E, 8}, {0x1E, 8}, {0x0E, 8}, {0x0E, 8}, 52 {0x06, 8}, {0x06, 8}, {0x02, 8}, {0x02, 8}, {0x00, 8}, 53 {0x00, 8}, {0xFE, 16}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, 54 {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, 55 {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, 56 {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0xFE, 8}, {0x7E, 8}, 57 {0x7E, 8}, {0x3E, 8}, {0x3E, 8}, {0x1E, 8}, {0x1E, 8}, 58 {0x0E, 8}, {0x0E, 8}, {0x06, 8}, {0x06, 8}, {0x02, 8}, 59 {0x02, 8}, {0x00, 8}, {0x00, 8}, {0xFE, 16} 60 }; 61 62 /* table of attenuation values for horizontal scaling */ 63 static u8 h_attenuation[] = { 1, 2, 4, 8, 2, 4, 8, 16, 0}; 64 65 /* calculate horizontal scale registers */ 66 static int calculate_h_scale_registers(struct saa7146_dev *dev, 67 int in_x, int out_x, int flip_lr, 68 u32* hps_ctrl, u32* hps_v_gain, u32* hps_h_prescale, u32* hps_h_scale) 69 { 70 /* horizontal prescaler */ 71 u32 dcgx = 0, xpsc = 0, xacm = 0, cxy = 0, cxuv = 0; 72 /* horizontal scaler */ 73 u32 xim = 0, xp = 0, xsci =0; 74 /* vertical scale & gain */ 75 u32 pfuv = 0; 76 77 /* helper variables */ 78 u32 h_atten = 0, i = 0; 79 80 if ( 0 == out_x ) { 81 return -EINVAL; 82 } 83 84 /* mask out vanity-bit */ 85 *hps_ctrl &= ~MASK_29; 86 87 /* calculate prescale-(xspc)-value: [n .. 1/2) : 1 88 [1/2 .. 1/3) : 2 89 [1/3 .. 1/4) : 3 90 ... */ 91 if (in_x > out_x) { 92 xpsc = in_x / out_x; 93 } 94 else { 95 /* zooming */ 96 xpsc = 1; 97 } 98 99 /* if flip_lr-bit is set, number of pixels after 100 horizontal prescaling must be < 384 */ 101 if ( 0 != flip_lr ) { 102 103 /* set vanity bit */ 104 *hps_ctrl |= MASK_29; 105 106 while (in_x / xpsc >= 384 ) 107 xpsc++; 108 } 109 /* if zooming is wanted, number of pixels after 110 horizontal prescaling must be < 768 */ 111 else { 112 while ( in_x / xpsc >= 768 ) 113 xpsc++; 114 } 115 116 /* maximum prescale is 64 (p.69) */ 117 if ( xpsc > 64 ) 118 xpsc = 64; 119 120 /* keep xacm clear*/ 121 xacm = 0; 122 123 /* set horizontal filter parameters (CXY = CXUV) */ 124 cxy = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].hps_coeff; 125 cxuv = cxy; 126 127 /* calculate and set horizontal fine scale (xsci) */ 128 129 /* bypass the horizontal scaler ? */ 130 if ( (in_x == out_x) && ( 1 == xpsc ) ) 131 xsci = 0x400; 132 else 133 xsci = ( (1024 * in_x) / (out_x * xpsc) ) + xpsc; 134 135 /* set start phase for horizontal fine scale (xp) to 0 */ 136 xp = 0; 137 138 /* set xim, if we bypass the horizontal scaler */ 139 if ( 0x400 == xsci ) 140 xim = 1; 141 else 142 xim = 0; 143 144 /* if the prescaler is bypassed, enable horizontal 145 accumulation mode (xacm) and clear dcgx */ 146 if( 1 == xpsc ) { 147 xacm = 1; 148 dcgx = 0; 149 } else { 150 xacm = 0; 151 /* get best match in the table of attenuations 152 for horizontal scaling */ 153 h_atten = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].weight_sum; 154 155 for (i = 0; h_attenuation[i] != 0; i++) { 156 if (h_attenuation[i] >= h_atten) 157 break; 158 } 159 160 dcgx = i; 161 } 162 163 /* the horizontal scaling increment controls the UV filter 164 to reduce the bandwidth to improve the display quality, 165 so set it ... */ 166 if ( xsci == 0x400) 167 pfuv = 0x00; 168 else if ( xsci < 0x600) 169 pfuv = 0x01; 170 else if ( xsci < 0x680) 171 pfuv = 0x11; 172 else if ( xsci < 0x700) 173 pfuv = 0x22; 174 else 175 pfuv = 0x33; 176 177 178 *hps_v_gain &= MASK_W0|MASK_B2; 179 *hps_v_gain |= (pfuv << 24); 180 181 *hps_h_scale &= ~(MASK_W1 | 0xf000); 182 *hps_h_scale |= (xim << 31) | (xp << 24) | (xsci << 12); 183 184 *hps_h_prescale |= (dcgx << 27) | ((xpsc-1) << 18) | (xacm << 17) | (cxy << 8) | (cxuv << 0); 185 186 return 0; 187 } 188 189 static struct { 190 u16 hps_coeff; 191 u16 weight_sum; 192 } hps_v_coeff_tab [] = { 193 {0x0100, 2}, {0x0102, 4}, {0x0300, 4}, {0x0106, 8}, {0x0502, 8}, 194 {0x0708, 8}, {0x0F00, 8}, {0x011E, 16}, {0x110E, 16}, {0x1926, 16}, 195 {0x3906, 16}, {0x3D42, 16}, {0x7D02, 16}, {0x7F80, 16}, {0xFF00, 16}, 196 {0x01FE, 32}, {0x01FE, 32}, {0x817E, 32}, {0x817E, 32}, {0xC13E, 32}, 197 {0xC13E, 32}, {0xE11E, 32}, {0xE11E, 32}, {0xF10E, 32}, {0xF10E, 32}, 198 {0xF906, 32}, {0xF906, 32}, {0xFD02, 32}, {0xFD02, 32}, {0xFF00, 32}, 199 {0xFF00, 32}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, 200 {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, 201 {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, 202 {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x01FE, 64}, {0x817E, 64}, 203 {0x817E, 64}, {0xC13E, 64}, {0xC13E, 64}, {0xE11E, 64}, {0xE11E, 64}, 204 {0xF10E, 64}, {0xF10E, 64}, {0xF906, 64}, {0xF906, 64}, {0xFD02, 64}, 205 {0xFD02, 64}, {0xFF00, 64}, {0xFF00, 64}, {0x01FE, 128} 206 }; 207 208 /* table of attenuation values for vertical scaling */ 209 static u16 v_attenuation[] = { 2, 4, 8, 16, 32, 64, 128, 256, 0}; 210 211 /* calculate vertical scale registers */ 212 static int calculate_v_scale_registers(struct saa7146_dev *dev, enum v4l2_field field, 213 int in_y, int out_y, u32* hps_v_scale, u32* hps_v_gain) 214 { 215 int lpi = 0; 216 217 /* vertical scaling */ 218 u32 yacm = 0, ysci = 0, yacl = 0, ypo = 0, ype = 0; 219 /* vertical scale & gain */ 220 u32 dcgy = 0, cya_cyb = 0; 221 222 /* helper variables */ 223 u32 v_atten = 0, i = 0; 224 225 /* error, if vertical zooming */ 226 if ( in_y < out_y ) { 227 return -EINVAL; 228 } 229 230 /* linear phase interpolation may be used 231 if scaling is between 1 and 1/2 (both fields used) 232 or scaling is between 1/2 and 1/4 (if only one field is used) */ 233 234 if (V4L2_FIELD_HAS_BOTH(field)) { 235 if( 2*out_y >= in_y) { 236 lpi = 1; 237 } 238 } else if (field == V4L2_FIELD_TOP 239 || field == V4L2_FIELD_ALTERNATE 240 || field == V4L2_FIELD_BOTTOM) { 241 if( 4*out_y >= in_y ) { 242 lpi = 1; 243 } 244 out_y *= 2; 245 } 246 if( 0 != lpi ) { 247 248 yacm = 0; 249 yacl = 0; 250 cya_cyb = 0x00ff; 251 252 /* calculate scaling increment */ 253 if ( in_y > out_y ) 254 ysci = ((1024 * in_y) / (out_y + 1)) - 1024; 255 else 256 ysci = 0; 257 258 dcgy = 0; 259 260 /* calculate ype and ypo */ 261 ype = ysci / 16; 262 ypo = ype + (ysci / 64); 263 264 } else { 265 yacm = 1; 266 267 /* calculate scaling increment */ 268 ysci = (((10 * 1024 * (in_y - out_y - 1)) / in_y) + 9) / 10; 269 270 /* calculate ype and ypo */ 271 ypo = ype = ((ysci + 15) / 16); 272 273 /* the sequence length interval (yacl) has to be set according 274 to the prescale value, e.g. [n .. 1/2) : 0 275 [1/2 .. 1/3) : 1 276 [1/3 .. 1/4) : 2 277 ... */ 278 if ( ysci < 512) { 279 yacl = 0; 280 } else { 281 yacl = ( ysci / (1024 - ysci) ); 282 } 283 284 /* get filter coefficients for cya, cyb from table hps_v_coeff_tab */ 285 cya_cyb = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].hps_coeff; 286 287 /* get best match in the table of attenuations for vertical scaling */ 288 v_atten = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].weight_sum; 289 290 for (i = 0; v_attenuation[i] != 0; i++) { 291 if (v_attenuation[i] >= v_atten) 292 break; 293 } 294 295 dcgy = i; 296 } 297 298 /* ypo and ype swapped in spec ? */ 299 *hps_v_scale |= (yacm << 31) | (ysci << 21) | (yacl << 15) | (ypo << 8 ) | (ype << 1); 300 301 *hps_v_gain &= ~(MASK_W0|MASK_B2); 302 *hps_v_gain |= (dcgy << 16) | (cya_cyb << 0); 303 304 return 0; 305 } 306 307 /* simple bubble-sort algorithm with duplicate elimination */ 308 static int sort_and_eliminate(u32* values, int* count) 309 { 310 int low = 0, high = 0, top = 0; 311 int cur = 0, next = 0; 312 313 /* sanity checks */ 314 if( (0 > *count) || (NULL == values) ) { 315 return -EINVAL; 316 } 317 318 /* bubble sort the first @count items of the array @values */ 319 for( top = *count; top > 0; top--) { 320 for( low = 0, high = 1; high < top; low++, high++) { 321 if( values[low] > values[high] ) 322 swap(values[low], values[high]); 323 } 324 } 325 326 /* remove duplicate items */ 327 for( cur = 0, next = 1; next < *count; next++) { 328 if( values[cur] != values[next]) 329 values[++cur] = values[next]; 330 } 331 332 *count = cur + 1; 333 334 return 0; 335 } 336 337 static void calculate_clipping_registers_rect(struct saa7146_dev *dev, struct saa7146_fh *fh, 338 struct saa7146_video_dma *vdma2, u32* clip_format, u32* arbtr_ctrl, enum v4l2_field field) 339 { 340 struct saa7146_vv *vv = dev->vv_data; 341 __le32 *clipping = vv->d_clipping.cpu_addr; 342 343 int width = vv->ov.win.w.width; 344 int height = vv->ov.win.w.height; 345 int clipcount = vv->ov.nclips; 346 347 u32 line_list[32]; 348 u32 pixel_list[32]; 349 int numdwords = 0; 350 351 int i = 0, j = 0; 352 int cnt_line = 0, cnt_pixel = 0; 353 354 int x[32], y[32], w[32], h[32]; 355 356 /* clear out memory */ 357 memset(&line_list[0], 0x00, sizeof(u32)*32); 358 memset(&pixel_list[0], 0x00, sizeof(u32)*32); 359 memset(clipping, 0x00, SAA7146_CLIPPING_MEM); 360 361 /* fill the line and pixel-lists */ 362 for(i = 0; i < clipcount; i++) { 363 int l = 0, r = 0, t = 0, b = 0; 364 365 x[i] = vv->ov.clips[i].c.left; 366 y[i] = vv->ov.clips[i].c.top; 367 w[i] = vv->ov.clips[i].c.width; 368 h[i] = vv->ov.clips[i].c.height; 369 370 if( w[i] < 0) { 371 x[i] += w[i]; w[i] = -w[i]; 372 } 373 if( h[i] < 0) { 374 y[i] += h[i]; h[i] = -h[i]; 375 } 376 if( x[i] < 0) { 377 w[i] += x[i]; x[i] = 0; 378 } 379 if( y[i] < 0) { 380 h[i] += y[i]; y[i] = 0; 381 } 382 if( 0 != vv->vflip ) { 383 y[i] = height - y[i] - h[i]; 384 } 385 386 l = x[i]; 387 r = x[i]+w[i]; 388 t = y[i]; 389 b = y[i]+h[i]; 390 391 /* insert left/right coordinates */ 392 pixel_list[ 2*i ] = min_t(int, l, width); 393 pixel_list[(2*i)+1] = min_t(int, r, width); 394 /* insert top/bottom coordinates */ 395 line_list[ 2*i ] = min_t(int, t, height); 396 line_list[(2*i)+1] = min_t(int, b, height); 397 } 398 399 /* sort and eliminate lists */ 400 cnt_line = cnt_pixel = 2*clipcount; 401 sort_and_eliminate( &pixel_list[0], &cnt_pixel ); 402 sort_and_eliminate( &line_list[0], &cnt_line ); 403 404 /* calculate the number of used u32s */ 405 numdwords = max_t(int, (cnt_line+1), (cnt_pixel+1))*2; 406 numdwords = max_t(int, 4, numdwords); 407 numdwords = min_t(int, 64, numdwords); 408 409 /* fill up cliptable */ 410 for(i = 0; i < cnt_pixel; i++) { 411 clipping[2*i] |= cpu_to_le32(pixel_list[i] << 16); 412 } 413 for(i = 0; i < cnt_line; i++) { 414 clipping[(2*i)+1] |= cpu_to_le32(line_list[i] << 16); 415 } 416 417 /* fill up cliptable with the display infos */ 418 for(j = 0; j < clipcount; j++) { 419 420 for(i = 0; i < cnt_pixel; i++) { 421 422 if( x[j] < 0) 423 x[j] = 0; 424 425 if( pixel_list[i] < (x[j] + w[j])) { 426 427 if ( pixel_list[i] >= x[j] ) { 428 clipping[2*i] |= cpu_to_le32(1 << j); 429 } 430 } 431 } 432 for(i = 0; i < cnt_line; i++) { 433 434 if( y[j] < 0) 435 y[j] = 0; 436 437 if( line_list[i] < (y[j] + h[j]) ) { 438 439 if( line_list[i] >= y[j] ) { 440 clipping[(2*i)+1] |= cpu_to_le32(1 << j); 441 } 442 } 443 } 444 } 445 446 /* adjust arbitration control register */ 447 *arbtr_ctrl &= 0xffff00ff; 448 *arbtr_ctrl |= 0x00001c00; 449 450 vdma2->base_even = vv->d_clipping.dma_handle; 451 vdma2->base_odd = vv->d_clipping.dma_handle; 452 vdma2->prot_addr = vv->d_clipping.dma_handle+((sizeof(u32))*(numdwords)); 453 vdma2->base_page = 0x04; 454 vdma2->pitch = 0x00; 455 vdma2->num_line_byte = (0 << 16 | (sizeof(u32))*(numdwords-1) ); 456 457 /* set clipping-mode. this depends on the field(s) used */ 458 *clip_format &= 0xfffffff7; 459 if (V4L2_FIELD_HAS_BOTH(field)) { 460 *clip_format |= 0x00000008; 461 } else { 462 *clip_format |= 0x00000000; 463 } 464 } 465 466 /* disable clipping */ 467 static void saa7146_disable_clipping(struct saa7146_dev *dev) 468 { 469 u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); 470 471 /* mask out relevant bits (=lower word)*/ 472 clip_format &= MASK_W1; 473 474 /* upload clipping-registers*/ 475 saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format); 476 saa7146_write(dev, MC2, (MASK_05 | MASK_21)); 477 478 /* disable video dma2 */ 479 saa7146_write(dev, MC1, MASK_21); 480 } 481 482 static void saa7146_set_clipping_rect(struct saa7146_fh *fh) 483 { 484 struct saa7146_dev *dev = fh->dev; 485 struct saa7146_vv *vv = dev->vv_data; 486 enum v4l2_field field = vv->ov.win.field; 487 struct saa7146_video_dma vdma2; 488 u32 clip_format; 489 u32 arbtr_ctrl; 490 491 /* check clipcount, disable clipping if clipcount == 0*/ 492 if (vv->ov.nclips == 0) { 493 saa7146_disable_clipping(dev); 494 return; 495 } 496 497 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); 498 arbtr_ctrl = saa7146_read(dev, PCI_BT_V1); 499 500 calculate_clipping_registers_rect(dev, fh, &vdma2, &clip_format, &arbtr_ctrl, field); 501 502 /* set clipping format */ 503 clip_format &= 0xffff0008; 504 clip_format |= (SAA7146_CLIPPING_RECT << 4); 505 506 /* prepare video dma2 */ 507 saa7146_write(dev, BASE_EVEN2, vdma2.base_even); 508 saa7146_write(dev, BASE_ODD2, vdma2.base_odd); 509 saa7146_write(dev, PROT_ADDR2, vdma2.prot_addr); 510 saa7146_write(dev, BASE_PAGE2, vdma2.base_page); 511 saa7146_write(dev, PITCH2, vdma2.pitch); 512 saa7146_write(dev, NUM_LINE_BYTE2, vdma2.num_line_byte); 513 514 /* prepare the rest */ 515 saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format); 516 saa7146_write(dev, PCI_BT_V1, arbtr_ctrl); 517 518 /* upload clip_control-register, clipping-registers, enable video dma2 */ 519 saa7146_write(dev, MC2, (MASK_05 | MASK_21 | MASK_03 | MASK_19)); 520 saa7146_write(dev, MC1, (MASK_05 | MASK_21)); 521 } 522 523 static void saa7146_set_window(struct saa7146_dev *dev, int width, int height, enum v4l2_field field) 524 { 525 struct saa7146_vv *vv = dev->vv_data; 526 527 int source = vv->current_hps_source; 528 int sync = vv->current_hps_sync; 529 530 u32 hps_v_scale = 0, hps_v_gain = 0, hps_ctrl = 0, hps_h_prescale = 0, hps_h_scale = 0; 531 532 /* set vertical scale */ 533 hps_v_scale = 0; /* all bits get set by the function-call */ 534 hps_v_gain = 0; /* fixme: saa7146_read(dev, HPS_V_GAIN);*/ 535 calculate_v_scale_registers(dev, field, vv->standard->v_field*2, height, &hps_v_scale, &hps_v_gain); 536 537 /* set horizontal scale */ 538 hps_ctrl = 0; 539 hps_h_prescale = 0; /* all bits get set in the function */ 540 hps_h_scale = 0; 541 calculate_h_scale_registers(dev, vv->standard->h_pixels, width, vv->hflip, &hps_ctrl, &hps_v_gain, &hps_h_prescale, &hps_h_scale); 542 543 /* set hyo and hxo */ 544 calculate_hxo_and_hyo(vv, &hps_h_scale, &hps_ctrl); 545 calculate_hps_source_and_sync(dev, source, sync, &hps_ctrl); 546 547 /* write out new register contents */ 548 saa7146_write(dev, HPS_V_SCALE, hps_v_scale); 549 saa7146_write(dev, HPS_V_GAIN, hps_v_gain); 550 saa7146_write(dev, HPS_CTRL, hps_ctrl); 551 saa7146_write(dev, HPS_H_PRESCALE,hps_h_prescale); 552 saa7146_write(dev, HPS_H_SCALE, hps_h_scale); 553 554 /* upload shadow-ram registers */ 555 saa7146_write(dev, MC2, (MASK_05 | MASK_06 | MASK_21 | MASK_22) ); 556 } 557 558 /* calculate the new memory offsets for a desired position */ 559 static void saa7146_set_position(struct saa7146_dev *dev, int w_x, int w_y, int w_height, enum v4l2_field field, u32 pixelformat) 560 { 561 struct saa7146_vv *vv = dev->vv_data; 562 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev, pixelformat); 563 564 int b_depth = vv->ov_fmt->depth; 565 int b_bpl = vv->ov_fb.fmt.bytesperline; 566 /* The unsigned long cast is to remove a 64-bit compile warning since 567 it looks like a 64-bit address is cast to a 32-bit value, even 568 though the base pointer is really a 32-bit physical address that 569 goes into a 32-bit DMA register. 570 FIXME: might not work on some 64-bit platforms, but see the FIXME 571 in struct v4l2_framebuffer (videodev2.h) for that. 572 */ 573 u32 base = (u32)(unsigned long)vv->ov_fb.base; 574 575 struct saa7146_video_dma vdma1; 576 577 /* calculate memory offsets for picture, look if we shall top-down-flip */ 578 vdma1.pitch = 2*b_bpl; 579 if ( 0 == vv->vflip ) { 580 vdma1.base_even = base + (w_y * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); 581 vdma1.base_odd = vdma1.base_even + (vdma1.pitch / 2); 582 vdma1.prot_addr = vdma1.base_even + (w_height * (vdma1.pitch / 2)); 583 } 584 else { 585 vdma1.base_even = base + ((w_y+w_height) * (vdma1.pitch/2)) + (w_x * (b_depth / 8)); 586 vdma1.base_odd = vdma1.base_even - (vdma1.pitch / 2); 587 vdma1.prot_addr = vdma1.base_odd - (w_height * (vdma1.pitch / 2)); 588 } 589 590 if (V4L2_FIELD_HAS_BOTH(field)) { 591 } else if (field == V4L2_FIELD_ALTERNATE) { 592 /* fixme */ 593 vdma1.base_odd = vdma1.prot_addr; 594 vdma1.pitch /= 2; 595 } else if (field == V4L2_FIELD_TOP) { 596 vdma1.base_odd = vdma1.prot_addr; 597 vdma1.pitch /= 2; 598 } else if (field == V4L2_FIELD_BOTTOM) { 599 vdma1.base_odd = vdma1.base_even; 600 vdma1.base_even = vdma1.prot_addr; 601 vdma1.pitch /= 2; 602 } 603 604 if ( 0 != vv->vflip ) { 605 vdma1.pitch *= -1; 606 } 607 608 vdma1.base_page = sfmt->swap; 609 vdma1.num_line_byte = (vv->standard->v_field<<16)+vv->standard->h_pixels; 610 611 saa7146_write_out_dma(dev, 1, &vdma1); 612 } 613 614 static void saa7146_set_output_format(struct saa7146_dev *dev, unsigned long palette) 615 { 616 u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL); 617 618 /* call helper function */ 619 calculate_output_format_register(dev,palette,&clip_format); 620 621 /* update the hps registers */ 622 saa7146_write(dev, CLIP_FORMAT_CTRL, clip_format); 623 saa7146_write(dev, MC2, (MASK_05 | MASK_21)); 624 } 625 626 /* select input-source */ 627 void saa7146_set_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync) 628 { 629 struct saa7146_vv *vv = dev->vv_data; 630 u32 hps_ctrl = 0; 631 632 /* read old state */ 633 hps_ctrl = saa7146_read(dev, HPS_CTRL); 634 635 hps_ctrl &= ~( MASK_31 | MASK_30 | MASK_28 ); 636 hps_ctrl |= (source << 30) | (sync << 28); 637 638 /* write back & upload register */ 639 saa7146_write(dev, HPS_CTRL, hps_ctrl); 640 saa7146_write(dev, MC2, (MASK_05 | MASK_21)); 641 642 vv->current_hps_source = source; 643 vv->current_hps_sync = sync; 644 } 645 EXPORT_SYMBOL_GPL(saa7146_set_hps_source_and_sync); 646 647 int saa7146_enable_overlay(struct saa7146_fh *fh) 648 { 649 struct saa7146_dev *dev = fh->dev; 650 struct saa7146_vv *vv = dev->vv_data; 651 652 saa7146_set_window(dev, vv->ov.win.w.width, vv->ov.win.w.height, vv->ov.win.field); 653 saa7146_set_position(dev, vv->ov.win.w.left, vv->ov.win.w.top, vv->ov.win.w.height, vv->ov.win.field, vv->ov_fmt->pixelformat); 654 saa7146_set_output_format(dev, vv->ov_fmt->trans); 655 saa7146_set_clipping_rect(fh); 656 657 /* enable video dma1 */ 658 saa7146_write(dev, MC1, (MASK_06 | MASK_22)); 659 return 0; 660 } 661 662 void saa7146_disable_overlay(struct saa7146_fh *fh) 663 { 664 struct saa7146_dev *dev = fh->dev; 665 666 /* disable clipping + video dma1 */ 667 saa7146_disable_clipping(dev); 668 saa7146_write(dev, MC1, MASK_22); 669 } 670 671 void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) 672 { 673 int where = 0; 674 675 if( which < 1 || which > 3) { 676 return; 677 } 678 679 /* calculate starting address */ 680 where = (which-1)*0x18; 681 682 saa7146_write(dev, where, vdma->base_odd); 683 saa7146_write(dev, where+0x04, vdma->base_even); 684 saa7146_write(dev, where+0x08, vdma->prot_addr); 685 saa7146_write(dev, where+0x0c, vdma->pitch); 686 saa7146_write(dev, where+0x10, vdma->base_page); 687 saa7146_write(dev, where+0x14, vdma->num_line_byte); 688 689 /* upload */ 690 saa7146_write(dev, MC2, (MASK_02<<(which-1))|(MASK_18<<(which-1))); 691 /* 692 printk("vdma%d.base_even: 0x%08x\n", which,vdma->base_even); 693 printk("vdma%d.base_odd: 0x%08x\n", which,vdma->base_odd); 694 printk("vdma%d.prot_addr: 0x%08x\n", which,vdma->prot_addr); 695 printk("vdma%d.base_page: 0x%08x\n", which,vdma->base_page); 696 printk("vdma%d.pitch: 0x%08x\n", which,vdma->pitch); 697 printk("vdma%d.num_line_byte: 0x%08x\n", which,vdma->num_line_byte); 698 */ 699 } 700 701 static int calculate_video_dma_grab_packed(struct saa7146_dev* dev, struct saa7146_buf *buf) 702 { 703 struct saa7146_vv *vv = dev->vv_data; 704 struct saa7146_video_dma vdma1; 705 706 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); 707 708 int width = buf->fmt->width; 709 int height = buf->fmt->height; 710 int bytesperline = buf->fmt->bytesperline; 711 enum v4l2_field field = buf->fmt->field; 712 713 int depth = sfmt->depth; 714 715 DEB_CAP("[size=%dx%d,fields=%s]\n", 716 width, height, v4l2_field_names[field]); 717 718 if( bytesperline != 0) { 719 vdma1.pitch = bytesperline*2; 720 } else { 721 vdma1.pitch = (width*depth*2)/8; 722 } 723 vdma1.num_line_byte = ((vv->standard->v_field<<16) + vv->standard->h_pixels); 724 vdma1.base_page = buf->pt[0].dma | ME1 | sfmt->swap; 725 726 if( 0 != vv->vflip ) { 727 vdma1.prot_addr = buf->pt[0].offset; 728 vdma1.base_even = buf->pt[0].offset+(vdma1.pitch/2)*height; 729 vdma1.base_odd = vdma1.base_even - (vdma1.pitch/2); 730 } else { 731 vdma1.base_even = buf->pt[0].offset; 732 vdma1.base_odd = vdma1.base_even + (vdma1.pitch/2); 733 vdma1.prot_addr = buf->pt[0].offset+(vdma1.pitch/2)*height; 734 } 735 736 if (V4L2_FIELD_HAS_BOTH(field)) { 737 } else if (field == V4L2_FIELD_ALTERNATE) { 738 /* fixme */ 739 if ( vv->last_field == V4L2_FIELD_TOP ) { 740 vdma1.base_odd = vdma1.prot_addr; 741 vdma1.pitch /= 2; 742 } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { 743 vdma1.base_odd = vdma1.base_even; 744 vdma1.base_even = vdma1.prot_addr; 745 vdma1.pitch /= 2; 746 } 747 } else if (field == V4L2_FIELD_TOP) { 748 vdma1.base_odd = vdma1.prot_addr; 749 vdma1.pitch /= 2; 750 } else if (field == V4L2_FIELD_BOTTOM) { 751 vdma1.base_odd = vdma1.base_even; 752 vdma1.base_even = vdma1.prot_addr; 753 vdma1.pitch /= 2; 754 } 755 756 if( 0 != vv->vflip ) { 757 vdma1.pitch *= -1; 758 } 759 760 saa7146_write_out_dma(dev, 1, &vdma1); 761 return 0; 762 } 763 764 static int calc_planar_422(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3) 765 { 766 int height = buf->fmt->height; 767 int width = buf->fmt->width; 768 769 vdma2->pitch = width; 770 vdma3->pitch = width; 771 772 /* fixme: look at bytesperline! */ 773 774 if( 0 != vv->vflip ) { 775 vdma2->prot_addr = buf->pt[1].offset; 776 vdma2->base_even = ((vdma2->pitch/2)*height)+buf->pt[1].offset; 777 vdma2->base_odd = vdma2->base_even - (vdma2->pitch/2); 778 779 vdma3->prot_addr = buf->pt[2].offset; 780 vdma3->base_even = ((vdma3->pitch/2)*height)+buf->pt[2].offset; 781 vdma3->base_odd = vdma3->base_even - (vdma3->pitch/2); 782 } else { 783 vdma3->base_even = buf->pt[2].offset; 784 vdma3->base_odd = vdma3->base_even + (vdma3->pitch/2); 785 vdma3->prot_addr = (vdma3->pitch/2)*height+buf->pt[2].offset; 786 787 vdma2->base_even = buf->pt[1].offset; 788 vdma2->base_odd = vdma2->base_even + (vdma2->pitch/2); 789 vdma2->prot_addr = (vdma2->pitch/2)*height+buf->pt[1].offset; 790 } 791 792 return 0; 793 } 794 795 static int calc_planar_420(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3) 796 { 797 int height = buf->fmt->height; 798 int width = buf->fmt->width; 799 800 vdma2->pitch = width/2; 801 vdma3->pitch = width/2; 802 803 if( 0 != vv->vflip ) { 804 vdma2->prot_addr = buf->pt[2].offset; 805 vdma2->base_even = ((vdma2->pitch/2)*height)+buf->pt[2].offset; 806 vdma2->base_odd = vdma2->base_even - (vdma2->pitch/2); 807 808 vdma3->prot_addr = buf->pt[1].offset; 809 vdma3->base_even = ((vdma3->pitch/2)*height)+buf->pt[1].offset; 810 vdma3->base_odd = vdma3->base_even - (vdma3->pitch/2); 811 812 } else { 813 vdma3->base_even = buf->pt[2].offset; 814 vdma3->base_odd = vdma3->base_even + (vdma3->pitch); 815 vdma3->prot_addr = (vdma3->pitch/2)*height+buf->pt[2].offset; 816 817 vdma2->base_even = buf->pt[1].offset; 818 vdma2->base_odd = vdma2->base_even + (vdma2->pitch); 819 vdma2->prot_addr = (vdma2->pitch/2)*height+buf->pt[1].offset; 820 } 821 return 0; 822 } 823 824 static int calculate_video_dma_grab_planar(struct saa7146_dev* dev, struct saa7146_buf *buf) 825 { 826 struct saa7146_vv *vv = dev->vv_data; 827 struct saa7146_video_dma vdma1; 828 struct saa7146_video_dma vdma2; 829 struct saa7146_video_dma vdma3; 830 831 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); 832 833 int width = buf->fmt->width; 834 int height = buf->fmt->height; 835 enum v4l2_field field = buf->fmt->field; 836 837 BUG_ON(0 == buf->pt[0].dma); 838 BUG_ON(0 == buf->pt[1].dma); 839 BUG_ON(0 == buf->pt[2].dma); 840 841 DEB_CAP("[size=%dx%d,fields=%s]\n", 842 width, height, v4l2_field_names[field]); 843 844 /* fixme: look at bytesperline! */ 845 846 /* fixme: what happens for user space buffers here?. The offsets are 847 most likely wrong, this version here only works for page-aligned 848 buffers, modifications to the pagetable-functions are necessary...*/ 849 850 vdma1.pitch = width*2; 851 vdma1.num_line_byte = ((vv->standard->v_field<<16) + vv->standard->h_pixels); 852 vdma1.base_page = buf->pt[0].dma | ME1; 853 854 if( 0 != vv->vflip ) { 855 vdma1.prot_addr = buf->pt[0].offset; 856 vdma1.base_even = ((vdma1.pitch/2)*height)+buf->pt[0].offset; 857 vdma1.base_odd = vdma1.base_even - (vdma1.pitch/2); 858 } else { 859 vdma1.base_even = buf->pt[0].offset; 860 vdma1.base_odd = vdma1.base_even + (vdma1.pitch/2); 861 vdma1.prot_addr = (vdma1.pitch/2)*height+buf->pt[0].offset; 862 } 863 864 vdma2.num_line_byte = 0; /* unused */ 865 vdma2.base_page = buf->pt[1].dma | ME1; 866 867 vdma3.num_line_byte = 0; /* unused */ 868 vdma3.base_page = buf->pt[2].dma | ME1; 869 870 switch( sfmt->depth ) { 871 case 12: { 872 calc_planar_420(vv,buf,&vdma2,&vdma3); 873 break; 874 } 875 case 16: { 876 calc_planar_422(vv,buf,&vdma2,&vdma3); 877 break; 878 } 879 default: { 880 return -1; 881 } 882 } 883 884 if (V4L2_FIELD_HAS_BOTH(field)) { 885 } else if (field == V4L2_FIELD_ALTERNATE) { 886 /* fixme */ 887 vdma1.base_odd = vdma1.prot_addr; 888 vdma1.pitch /= 2; 889 vdma2.base_odd = vdma2.prot_addr; 890 vdma2.pitch /= 2; 891 vdma3.base_odd = vdma3.prot_addr; 892 vdma3.pitch /= 2; 893 } else if (field == V4L2_FIELD_TOP) { 894 vdma1.base_odd = vdma1.prot_addr; 895 vdma1.pitch /= 2; 896 vdma2.base_odd = vdma2.prot_addr; 897 vdma2.pitch /= 2; 898 vdma3.base_odd = vdma3.prot_addr; 899 vdma3.pitch /= 2; 900 } else if (field == V4L2_FIELD_BOTTOM) { 901 vdma1.base_odd = vdma1.base_even; 902 vdma1.base_even = vdma1.prot_addr; 903 vdma1.pitch /= 2; 904 vdma2.base_odd = vdma2.base_even; 905 vdma2.base_even = vdma2.prot_addr; 906 vdma2.pitch /= 2; 907 vdma3.base_odd = vdma3.base_even; 908 vdma3.base_even = vdma3.prot_addr; 909 vdma3.pitch /= 2; 910 } 911 912 if( 0 != vv->vflip ) { 913 vdma1.pitch *= -1; 914 vdma2.pitch *= -1; 915 vdma3.pitch *= -1; 916 } 917 918 saa7146_write_out_dma(dev, 1, &vdma1); 919 if( (sfmt->flags & FORMAT_BYTE_SWAP) != 0 ) { 920 saa7146_write_out_dma(dev, 3, &vdma2); 921 saa7146_write_out_dma(dev, 2, &vdma3); 922 } else { 923 saa7146_write_out_dma(dev, 2, &vdma2); 924 saa7146_write_out_dma(dev, 3, &vdma3); 925 } 926 return 0; 927 } 928 929 static void program_capture_engine(struct saa7146_dev *dev, int planar) 930 { 931 struct saa7146_vv *vv = dev->vv_data; 932 int count = 0; 933 934 unsigned long e_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_E_FID_A : CMD_E_FID_B; 935 unsigned long o_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_O_FID_A : CMD_O_FID_B; 936 937 /* wait for o_fid_a/b / e_fid_a/b toggle only if rps register 0 is not set*/ 938 WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | o_wait); 939 WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | e_wait); 940 941 /* set rps register 0 */ 942 WRITE_RPS0(CMD_WR_REG | (1 << 8) | (MC2/4)); 943 WRITE_RPS0(MASK_27 | MASK_11); 944 945 /* turn on video-dma1 */ 946 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); 947 WRITE_RPS0(MASK_06 | MASK_22); /* => mask */ 948 WRITE_RPS0(MASK_06 | MASK_22); /* => values */ 949 if( 0 != planar ) { 950 /* turn on video-dma2 */ 951 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); 952 WRITE_RPS0(MASK_05 | MASK_21); /* => mask */ 953 WRITE_RPS0(MASK_05 | MASK_21); /* => values */ 954 955 /* turn on video-dma3 */ 956 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); 957 WRITE_RPS0(MASK_04 | MASK_20); /* => mask */ 958 WRITE_RPS0(MASK_04 | MASK_20); /* => values */ 959 } 960 961 /* wait for o_fid_a/b / e_fid_a/b toggle */ 962 if ( vv->last_field == V4L2_FIELD_INTERLACED ) { 963 WRITE_RPS0(CMD_PAUSE | o_wait); 964 WRITE_RPS0(CMD_PAUSE | e_wait); 965 } else if ( vv->last_field == V4L2_FIELD_TOP ) { 966 WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09)); 967 WRITE_RPS0(CMD_PAUSE | o_wait); 968 } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { 969 WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09)); 970 WRITE_RPS0(CMD_PAUSE | e_wait); 971 } 972 973 /* turn off video-dma1 */ 974 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); 975 WRITE_RPS0(MASK_22 | MASK_06); /* => mask */ 976 WRITE_RPS0(MASK_22); /* => values */ 977 if( 0 != planar ) { 978 /* turn off video-dma2 */ 979 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); 980 WRITE_RPS0(MASK_05 | MASK_21); /* => mask */ 981 WRITE_RPS0(MASK_21); /* => values */ 982 983 /* turn off video-dma3 */ 984 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4)); 985 WRITE_RPS0(MASK_04 | MASK_20); /* => mask */ 986 WRITE_RPS0(MASK_20); /* => values */ 987 } 988 989 /* generate interrupt */ 990 WRITE_RPS0(CMD_INTERRUPT); 991 992 /* stop */ 993 WRITE_RPS0(CMD_STOP); 994 } 995 996 void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next) 997 { 998 struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); 999 struct saa7146_vv *vv = dev->vv_data; 1000 u32 vdma1_prot_addr; 1001 1002 DEB_CAP("buf:%p, next:%p\n", buf, next); 1003 1004 vdma1_prot_addr = saa7146_read(dev, PROT_ADDR1); 1005 if( 0 == vdma1_prot_addr ) { 1006 /* clear out beginning of streaming bit (rps register 0)*/ 1007 DEB_CAP("forcing sync to new frame\n"); 1008 saa7146_write(dev, MC2, MASK_27 ); 1009 } 1010 1011 saa7146_set_window(dev, buf->fmt->width, buf->fmt->height, buf->fmt->field); 1012 saa7146_set_output_format(dev, sfmt->trans); 1013 saa7146_disable_clipping(dev); 1014 1015 if ( vv->last_field == V4L2_FIELD_INTERLACED ) { 1016 } else if ( vv->last_field == V4L2_FIELD_TOP ) { 1017 vv->last_field = V4L2_FIELD_BOTTOM; 1018 } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) { 1019 vv->last_field = V4L2_FIELD_TOP; 1020 } 1021 1022 if( 0 != IS_PLANAR(sfmt->trans)) { 1023 calculate_video_dma_grab_planar(dev, buf); 1024 program_capture_engine(dev,1); 1025 } else { 1026 calculate_video_dma_grab_packed(dev, buf); 1027 program_capture_engine(dev,0); 1028 } 1029 1030 /* 1031 printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1)); 1032 printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1)); 1033 printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1)); 1034 printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1)); 1035 printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1)); 1036 printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1)); 1037 printk("vdma%d => vptr : 0x%08x\n", 1,saa7146_read(dev,PCI_VDP1)); 1038 */ 1039 1040 /* write the address of the rps-program */ 1041 saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle); 1042 1043 /* turn on rps */ 1044 saa7146_write(dev, MC1, (MASK_12 | MASK_28)); 1045 } 1046