drivers/media/common/saa7146/saa7146

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This source file includes following definitions.
calculate_output_format_register
calculate_hps_source_and_sync
calculate_hxo_and_hyo
calculate_h_scale_registers
calculate_v_scale_registers
sort_and_eliminate
calculate_clipping_registers_rect
saa7146_disable_clipping
saa7146_set_clipping_rect
saa7146_set_window
saa7146_set_position
saa7146_set_output_format
saa7146_set_hps_source_and_sync
saa7146_enable_overlay
saa7146_disable_overlay
saa7146_write_out_dma
calculate_video_dma_grab_packed
calc_planar_422
calc_planar_420
calculate_video_dma_grab_planar
program_capture_engine
saa7146_set_capture
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   3 
   4 #include <linux/kernel.h>
   5 #include <linux/export.h>
   6 #include <media/drv-intf/saa7146_vv.h>
   7 
   8 static void calculate_output_format_register(struct saa7146_dev* saa, u32 palette, u32* clip_format)
   9 {
  10         /* clear out the necessary bits */
  11         *clip_format &= 0x0000ffff;
  12         /* set these bits new */
  13         *clip_format |=  (( ((palette&0xf00)>>8) << 30) | ((palette&0x00f) << 24) | (((palette&0x0f0)>>4) << 16));
  14 }
  15 
  16 static void calculate_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync, u32* hps_ctrl)
  17 {
  18         *hps_ctrl &= ~(MASK_30 | MASK_31 | MASK_28);
  19         *hps_ctrl |= (source << 30) | (sync << 28);
  20 }
  21 
  22 static void calculate_hxo_and_hyo(struct saa7146_vv *vv, u32* hps_h_scale, u32* hps_ctrl)
  23 {
  24         int hyo = 0, hxo = 0;
  25 
  26         hyo = vv->standard->v_offset;
  27         hxo = vv->standard->h_offset;
  28 
  29         *hps_h_scale    &= ~(MASK_B0 | 0xf00);
  30         *hps_h_scale    |= (hxo <<  0);
  31 
  32         *hps_ctrl       &= ~(MASK_W0 | MASK_B2);
  33         *hps_ctrl       |= (hyo << 12);
  34 }
  35 
  36 /* helper functions for the calculation of the horizontal- and vertical
  37    scaling registers, clip-format-register etc ...
  38    these functions take pointers to the (most-likely read-out
  39    original-values) and manipulate them according to the requested
  40    changes.
  41 */
  42 
  43 /* hps_coeff used for CXY and CXUV; scale 1/1 -> scale 1/64 */
  44 static struct {
  45         u16 hps_coeff;
  46         u16 weight_sum;
  47 } hps_h_coeff_tab [] = {
  48         {0x00,   2}, {0x02,   4}, {0x00,   4}, {0x06,   8}, {0x02,   8},
  49         {0x08,   8}, {0x00,   8}, {0x1E,  16}, {0x0E,   8}, {0x26,   8},
  50         {0x06,   8}, {0x42,   8}, {0x02,   8}, {0x80,   8}, {0x00,   8},
  51         {0xFE,  16}, {0xFE,   8}, {0x7E,   8}, {0x7E,   8}, {0x3E,   8},
  52         {0x3E,   8}, {0x1E,   8}, {0x1E,   8}, {0x0E,   8}, {0x0E,   8},
  53         {0x06,   8}, {0x06,   8}, {0x02,   8}, {0x02,   8}, {0x00,   8},
  54         {0x00,   8}, {0xFE,  16}, {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}, {0xFE,   8},
  57         {0xFE,   8}, {0xFE,   8}, {0xFE,   8}, {0xFE,   8}, {0x7E,   8},
  58         {0x7E,   8}, {0x3E,   8}, {0x3E,   8}, {0x1E,   8}, {0x1E,   8},
  59         {0x0E,   8}, {0x0E,   8}, {0x06,   8}, {0x06,   8}, {0x02,   8},
  60         {0x02,   8}, {0x00,   8}, {0x00,   8}, {0xFE,  16}
  61 };
  62 
  63 /* table of attenuation values for horizontal scaling */
  64 static u8 h_attenuation[] = { 1, 2, 4, 8, 2, 4, 8, 16, 0};
  65 
  66 /* calculate horizontal scale registers */
  67 static int calculate_h_scale_registers(struct saa7146_dev *dev,
  68         int in_x, int out_x, int flip_lr,
  69         u32* hps_ctrl, u32* hps_v_gain, u32* hps_h_prescale, u32* hps_h_scale)
  70 {
  71         /* horizontal prescaler */
  72         u32 dcgx = 0, xpsc = 0, xacm = 0, cxy = 0, cxuv = 0;
  73         /* horizontal scaler */
  74         u32 xim = 0, xp = 0, xsci =0;
  75         /* vertical scale & gain */
  76         u32 pfuv = 0;
  77 
  78         /* helper variables */
  79         u32 h_atten = 0, i = 0;
  80 
  81         if ( 0 == out_x ) {
  82                 return -EINVAL;
  83         }
  84 
  85         /* mask out vanity-bit */
  86         *hps_ctrl &= ~MASK_29;
  87 
  88         /* calculate prescale-(xspc)-value:     [n   .. 1/2) : 1
  89                                                 [1/2 .. 1/3) : 2
  90                                                 [1/3 .. 1/4) : 3
  91                                                 ...             */
  92         if (in_x > out_x) {
  93                 xpsc = in_x / out_x;
  94         }
  95         else {
  96                 /* zooming */
  97                 xpsc = 1;
  98         }
  99 
 100         /* if flip_lr-bit is set, number of pixels after
 101            horizontal prescaling must be < 384 */
 102         if ( 0 != flip_lr ) {
 103 
 104                 /* set vanity bit */
 105                 *hps_ctrl |= MASK_29;
 106 
 107                 while (in_x / xpsc >= 384 )
 108                         xpsc++;
 109         }
 110         /* if zooming is wanted, number of pixels after
 111            horizontal prescaling must be < 768 */
 112         else {
 113                 while ( in_x / xpsc >= 768 )
 114                         xpsc++;
 115         }
 116 
 117         /* maximum prescale is 64 (p.69) */
 118         if ( xpsc > 64 )
 119                 xpsc = 64;
 120 
 121         /* keep xacm clear*/
 122         xacm = 0;
 123 
 124         /* set horizontal filter parameters (CXY = CXUV) */
 125         cxy = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].hps_coeff;
 126         cxuv = cxy;
 127 
 128         /* calculate and set horizontal fine scale (xsci) */
 129 
 130         /* bypass the horizontal scaler ? */
 131         if ( (in_x == out_x) && ( 1 == xpsc ) )
 132                 xsci = 0x400;
 133         else
 134                 xsci = ( (1024 * in_x) / (out_x * xpsc) ) + xpsc;
 135 
 136         /* set start phase for horizontal fine scale (xp) to 0 */
 137         xp = 0;
 138 
 139         /* set xim, if we bypass the horizontal scaler */
 140         if ( 0x400 == xsci )
 141                 xim = 1;
 142         else
 143                 xim = 0;
 144 
 145         /* if the prescaler is bypassed, enable horizontal
 146            accumulation mode (xacm) and clear dcgx */
 147         if( 1 == xpsc ) {
 148                 xacm = 1;
 149                 dcgx = 0;
 150         } else {
 151                 xacm = 0;
 152                 /* get best match in the table of attenuations
 153                    for horizontal scaling */
 154                 h_atten = hps_h_coeff_tab[( (xpsc - 1) < 63 ? (xpsc - 1) : 63 )].weight_sum;
 155 
 156                 for (i = 0; h_attenuation[i] != 0; i++) {
 157                         if (h_attenuation[i] >= h_atten)
 158                                 break;
 159                 }
 160 
 161                 dcgx = i;
 162         }
 163 
 164         /* the horizontal scaling increment controls the UV filter
 165            to reduce the bandwidth to improve the display quality,
 166            so set it ... */
 167         if ( xsci == 0x400)
 168                 pfuv = 0x00;
 169         else if ( xsci < 0x600)
 170                 pfuv = 0x01;
 171         else if ( xsci < 0x680)
 172                 pfuv = 0x11;
 173         else if ( xsci < 0x700)
 174                 pfuv = 0x22;
 175         else
 176                 pfuv = 0x33;
 177 
 178 
 179         *hps_v_gain  &= MASK_W0|MASK_B2;
 180         *hps_v_gain  |= (pfuv << 24);
 181 
 182         *hps_h_scale    &= ~(MASK_W1 | 0xf000);
 183         *hps_h_scale    |= (xim << 31) | (xp << 24) | (xsci << 12);
 184 
 185         *hps_h_prescale |= (dcgx << 27) | ((xpsc-1) << 18) | (xacm << 17) | (cxy << 8) | (cxuv << 0);
 186 
 187         return 0;
 188 }
 189 
 190 static struct {
 191         u16 hps_coeff;
 192         u16 weight_sum;
 193 } hps_v_coeff_tab [] = {
 194  {0x0100,   2},  {0x0102,   4},  {0x0300,   4},  {0x0106,   8},  {0x0502,   8},
 195  {0x0708,   8},  {0x0F00,   8},  {0x011E,  16},  {0x110E,  16},  {0x1926,  16},
 196  {0x3906,  16},  {0x3D42,  16},  {0x7D02,  16},  {0x7F80,  16},  {0xFF00,  16},
 197  {0x01FE,  32},  {0x01FE,  32},  {0x817E,  32},  {0x817E,  32},  {0xC13E,  32},
 198  {0xC13E,  32},  {0xE11E,  32},  {0xE11E,  32},  {0xF10E,  32},  {0xF10E,  32},
 199  {0xF906,  32},  {0xF906,  32},  {0xFD02,  32},  {0xFD02,  32},  {0xFF00,  32},
 200  {0xFF00,  32},  {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},  {0x01FE,  64},
 203  {0x01FE,  64},  {0x01FE,  64},  {0x01FE,  64},  {0x01FE,  64},  {0x817E,  64},
 204  {0x817E,  64},  {0xC13E,  64},  {0xC13E,  64},  {0xE11E,  64},  {0xE11E,  64},
 205  {0xF10E,  64},  {0xF10E,  64},  {0xF906,  64},  {0xF906,  64},  {0xFD02,  64},
 206  {0xFD02,  64},  {0xFF00,  64},  {0xFF00,  64},  {0x01FE, 128}
 207 };
 208 
 209 /* table of attenuation values for vertical scaling */
 210 static u16 v_attenuation[] = { 2, 4, 8, 16, 32, 64, 128, 256, 0};
 211 
 212 /* calculate vertical scale registers */
 213 static int calculate_v_scale_registers(struct saa7146_dev *dev, enum v4l2_field field,
 214         int in_y, int out_y, u32* hps_v_scale, u32* hps_v_gain)
 215 {
 216         int lpi = 0;
 217 
 218         /* vertical scaling */
 219         u32 yacm = 0, ysci = 0, yacl = 0, ypo = 0, ype = 0;
 220         /* vertical scale & gain */
 221         u32 dcgy = 0, cya_cyb = 0;
 222 
 223         /* helper variables */
 224         u32 v_atten = 0, i = 0;
 225 
 226         /* error, if vertical zooming */
 227         if ( in_y < out_y ) {
 228                 return -EINVAL;
 229         }
 230 
 231         /* linear phase interpolation may be used
 232            if scaling is between 1 and 1/2 (both fields used)
 233            or scaling is between 1/2 and 1/4 (if only one field is used) */
 234 
 235         if (V4L2_FIELD_HAS_BOTH(field)) {
 236                 if( 2*out_y >= in_y) {
 237                         lpi = 1;
 238                 }
 239         } else if (field == V4L2_FIELD_TOP
 240                 || field == V4L2_FIELD_ALTERNATE
 241                 || field == V4L2_FIELD_BOTTOM) {
 242                 if( 4*out_y >= in_y ) {
 243                         lpi = 1;
 244                 }
 245                 out_y *= 2;
 246         }
 247         if( 0 != lpi ) {
 248 
 249                 yacm = 0;
 250                 yacl = 0;
 251                 cya_cyb = 0x00ff;
 252 
 253                 /* calculate scaling increment */
 254                 if ( in_y > out_y )
 255                         ysci = ((1024 * in_y) / (out_y + 1)) - 1024;
 256                 else
 257                         ysci = 0;
 258 
 259                 dcgy = 0;
 260 
 261                 /* calculate ype and ypo */
 262                 ype = ysci / 16;
 263                 ypo = ype + (ysci / 64);
 264 
 265         } else {
 266                 yacm = 1;
 267 
 268                 /* calculate scaling increment */
 269                 ysci = (((10 * 1024 * (in_y - out_y - 1)) / in_y) + 9) / 10;
 270 
 271                 /* calculate ype and ypo */
 272                 ypo = ype = ((ysci + 15) / 16);
 273 
 274                 /* the sequence length interval (yacl) has to be set according
 275                    to the prescale value, e.g.  [n   .. 1/2) : 0
 276                                                 [1/2 .. 1/3) : 1
 277                                                 [1/3 .. 1/4) : 2
 278                                                 ... */
 279                 if ( ysci < 512) {
 280                         yacl = 0;
 281                 } else {
 282                         yacl = ( ysci / (1024 - ysci) );
 283                 }
 284 
 285                 /* get filter coefficients for cya, cyb from table hps_v_coeff_tab */
 286                 cya_cyb = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].hps_coeff;
 287 
 288                 /* get best match in the table of attenuations for vertical scaling */
 289                 v_atten = hps_v_coeff_tab[ (yacl < 63 ? yacl : 63 ) ].weight_sum;
 290 
 291                 for (i = 0; v_attenuation[i] != 0; i++) {
 292                         if (v_attenuation[i] >= v_atten)
 293                                 break;
 294                 }
 295 
 296                 dcgy = i;
 297         }
 298 
 299         /* ypo and ype swapped in spec ? */
 300         *hps_v_scale    |= (yacm << 31) | (ysci << 21) | (yacl << 15) | (ypo << 8 ) | (ype << 1);
 301 
 302         *hps_v_gain     &= ~(MASK_W0|MASK_B2);
 303         *hps_v_gain     |= (dcgy << 16) | (cya_cyb << 0);
 304 
 305         return 0;
 306 }
 307 
 308 /* simple bubble-sort algorithm with duplicate elimination */
 309 static int sort_and_eliminate(u32* values, int* count)
 310 {
 311         int low = 0, high = 0, top = 0;
 312         int cur = 0, next = 0;
 313 
 314         /* sanity checks */
 315         if( (0 > *count) || (NULL == values) ) {
 316                 return -EINVAL;
 317         }
 318 
 319         /* bubble sort the first @count items of the array @values */
 320         for( top = *count; top > 0; top--) {
 321                 for( low = 0, high = 1; high < top; low++, high++) {
 322                         if( values[low] > values[high] )
 323                                 swap(values[low], values[high]);
 324                 }
 325         }
 326 
 327         /* remove duplicate items */
 328         for( cur = 0, next = 1; next < *count; next++) {
 329                 if( values[cur] != values[next])
 330                         values[++cur] = values[next];
 331         }
 332 
 333         *count = cur + 1;
 334 
 335         return 0;
 336 }
 337 
 338 static void calculate_clipping_registers_rect(struct saa7146_dev *dev, struct saa7146_fh *fh,
 339         struct saa7146_video_dma *vdma2, u32* clip_format, u32* arbtr_ctrl, enum v4l2_field field)
 340 {
 341         struct saa7146_vv *vv = dev->vv_data;
 342         __le32 *clipping = vv->d_clipping.cpu_addr;
 343 
 344         int width = vv->ov.win.w.width;
 345         int height =  vv->ov.win.w.height;
 346         int clipcount = vv->ov.nclips;
 347 
 348         u32 line_list[32];
 349         u32 pixel_list[32];
 350         int numdwords = 0;
 351 
 352         int i = 0, j = 0;
 353         int cnt_line = 0, cnt_pixel = 0;
 354 
 355         int x[32], y[32], w[32], h[32];
 356 
 357         /* clear out memory */
 358         memset(&line_list[0],  0x00, sizeof(u32)*32);
 359         memset(&pixel_list[0], 0x00, sizeof(u32)*32);
 360         memset(clipping,  0x00, SAA7146_CLIPPING_MEM);
 361 
 362         /* fill the line and pixel-lists */
 363         for(i = 0; i < clipcount; i++) {
 364                 int l = 0, r = 0, t = 0, b = 0;
 365 
 366                 x[i] = vv->ov.clips[i].c.left;
 367                 y[i] = vv->ov.clips[i].c.top;
 368                 w[i] = vv->ov.clips[i].c.width;
 369                 h[i] = vv->ov.clips[i].c.height;
 370 
 371                 if( w[i] < 0) {
 372                         x[i] += w[i]; w[i] = -w[i];
 373                 }
 374                 if( h[i] < 0) {
 375                         y[i] += h[i]; h[i] = -h[i];
 376                 }
 377                 if( x[i] < 0) {
 378                         w[i] += x[i]; x[i] = 0;
 379                 }
 380                 if( y[i] < 0) {
 381                         h[i] += y[i]; y[i] = 0;
 382                 }
 383                 if( 0 != vv->vflip ) {
 384                         y[i] = height - y[i] - h[i];
 385                 }
 386 
 387                 l = x[i];
 388                 r = x[i]+w[i];
 389                 t = y[i];
 390                 b = y[i]+h[i];
 391 
 392                 /* insert left/right coordinates */
 393                 pixel_list[ 2*i   ] = min_t(int, l, width);
 394                 pixel_list[(2*i)+1] = min_t(int, r, width);
 395                 /* insert top/bottom coordinates */
 396                 line_list[ 2*i   ] = min_t(int, t, height);
 397                 line_list[(2*i)+1] = min_t(int, b, height);
 398         }
 399 
 400         /* sort and eliminate lists */
 401         cnt_line = cnt_pixel = 2*clipcount;
 402         sort_and_eliminate( &pixel_list[0], &cnt_pixel );
 403         sort_and_eliminate( &line_list[0], &cnt_line );
 404 
 405         /* calculate the number of used u32s */
 406         numdwords = max_t(int, (cnt_line+1), (cnt_pixel+1))*2;
 407         numdwords = max_t(int, 4, numdwords);
 408         numdwords = min_t(int, 64, numdwords);
 409 
 410         /* fill up cliptable */
 411         for(i = 0; i < cnt_pixel; i++) {
 412                 clipping[2*i] |= cpu_to_le32(pixel_list[i] << 16);
 413         }
 414         for(i = 0; i < cnt_line; i++) {
 415                 clipping[(2*i)+1] |= cpu_to_le32(line_list[i] << 16);
 416         }
 417 
 418         /* fill up cliptable with the display infos */
 419         for(j = 0; j < clipcount; j++) {
 420 
 421                 for(i = 0; i < cnt_pixel; i++) {
 422 
 423                         if( x[j] < 0)
 424                                 x[j] = 0;
 425 
 426                         if( pixel_list[i] < (x[j] + w[j])) {
 427 
 428                                 if ( pixel_list[i] >= x[j] ) {
 429                                         clipping[2*i] |= cpu_to_le32(1 << j);
 430                                 }
 431                         }
 432                 }
 433                 for(i = 0; i < cnt_line; i++) {
 434 
 435                         if( y[j] < 0)
 436                                 y[j] = 0;
 437 
 438                         if( line_list[i] < (y[j] + h[j]) ) {
 439 
 440                                 if( line_list[i] >= y[j] ) {
 441                                         clipping[(2*i)+1] |= cpu_to_le32(1 << j);
 442                                 }
 443                         }
 444                 }
 445         }
 446 
 447         /* adjust arbitration control register */
 448         *arbtr_ctrl &= 0xffff00ff;
 449         *arbtr_ctrl |= 0x00001c00;
 450 
 451         vdma2->base_even        = vv->d_clipping.dma_handle;
 452         vdma2->base_odd         = vv->d_clipping.dma_handle;
 453         vdma2->prot_addr        = vv->d_clipping.dma_handle+((sizeof(u32))*(numdwords));
 454         vdma2->base_page        = 0x04;
 455         vdma2->pitch            = 0x00;
 456         vdma2->num_line_byte    = (0 << 16 | (sizeof(u32))*(numdwords-1) );
 457 
 458         /* set clipping-mode. this depends on the field(s) used */
 459         *clip_format &= 0xfffffff7;
 460         if (V4L2_FIELD_HAS_BOTH(field)) {
 461                 *clip_format |= 0x00000008;
 462         } else {
 463                 *clip_format |= 0x00000000;
 464         }
 465 }
 466 
 467 /* disable clipping */
 468 static void saa7146_disable_clipping(struct saa7146_dev *dev)
 469 {
 470         u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL);
 471 
 472         /* mask out relevant bits (=lower word)*/
 473         clip_format &= MASK_W1;
 474 
 475         /* upload clipping-registers*/
 476         saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format);
 477         saa7146_write(dev, MC2, (MASK_05 | MASK_21));
 478 
 479         /* disable video dma2 */
 480         saa7146_write(dev, MC1, MASK_21);
 481 }
 482 
 483 static void saa7146_set_clipping_rect(struct saa7146_fh *fh)
 484 {
 485         struct saa7146_dev *dev = fh->dev;
 486         struct saa7146_vv *vv = dev->vv_data;
 487         enum v4l2_field field = vv->ov.win.field;
 488         struct  saa7146_video_dma vdma2;
 489         u32 clip_format;
 490         u32 arbtr_ctrl;
 491 
 492         /* check clipcount, disable clipping if clipcount == 0*/
 493         if (vv->ov.nclips == 0) {
 494                 saa7146_disable_clipping(dev);
 495                 return;
 496         }
 497 
 498         clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL);
 499         arbtr_ctrl = saa7146_read(dev, PCI_BT_V1);
 500 
 501         calculate_clipping_registers_rect(dev, fh, &vdma2, &clip_format, &arbtr_ctrl, field);
 502 
 503         /* set clipping format */
 504         clip_format &= 0xffff0008;
 505         clip_format |= (SAA7146_CLIPPING_RECT << 4);
 506 
 507         /* prepare video dma2 */
 508         saa7146_write(dev, BASE_EVEN2,          vdma2.base_even);
 509         saa7146_write(dev, BASE_ODD2,           vdma2.base_odd);
 510         saa7146_write(dev, PROT_ADDR2,          vdma2.prot_addr);
 511         saa7146_write(dev, BASE_PAGE2,          vdma2.base_page);
 512         saa7146_write(dev, PITCH2,              vdma2.pitch);
 513         saa7146_write(dev, NUM_LINE_BYTE2,      vdma2.num_line_byte);
 514 
 515         /* prepare the rest */
 516         saa7146_write(dev, CLIP_FORMAT_CTRL,clip_format);
 517         saa7146_write(dev, PCI_BT_V1, arbtr_ctrl);
 518 
 519         /* upload clip_control-register, clipping-registers, enable video dma2 */
 520         saa7146_write(dev, MC2, (MASK_05 | MASK_21 | MASK_03 | MASK_19));
 521         saa7146_write(dev, MC1, (MASK_05 | MASK_21));
 522 }
 523 
 524 static void saa7146_set_window(struct saa7146_dev *dev, int width, int height, enum v4l2_field field)
 525 {
 526         struct saa7146_vv *vv = dev->vv_data;
 527 
 528         int source = vv->current_hps_source;
 529         int sync = vv->current_hps_sync;
 530 
 531         u32 hps_v_scale = 0, hps_v_gain  = 0, hps_ctrl = 0, hps_h_prescale = 0, hps_h_scale = 0;
 532 
 533         /* set vertical scale */
 534         hps_v_scale = 0; /* all bits get set by the function-call */
 535         hps_v_gain  = 0; /* fixme: saa7146_read(dev, HPS_V_GAIN);*/
 536         calculate_v_scale_registers(dev, field, vv->standard->v_field*2, height, &hps_v_scale, &hps_v_gain);
 537 
 538         /* set horizontal scale */
 539         hps_ctrl        = 0;
 540         hps_h_prescale  = 0; /* all bits get set in the function */
 541         hps_h_scale     = 0;
 542         calculate_h_scale_registers(dev, vv->standard->h_pixels, width, vv->hflip, &hps_ctrl, &hps_v_gain, &hps_h_prescale, &hps_h_scale);
 543 
 544         /* set hyo and hxo */
 545         calculate_hxo_and_hyo(vv, &hps_h_scale, &hps_ctrl);
 546         calculate_hps_source_and_sync(dev, source, sync, &hps_ctrl);
 547 
 548         /* write out new register contents */
 549         saa7146_write(dev, HPS_V_SCALE, hps_v_scale);
 550         saa7146_write(dev, HPS_V_GAIN,  hps_v_gain);
 551         saa7146_write(dev, HPS_CTRL,    hps_ctrl);
 552         saa7146_write(dev, HPS_H_PRESCALE,hps_h_prescale);
 553         saa7146_write(dev, HPS_H_SCALE, hps_h_scale);
 554 
 555         /* upload shadow-ram registers */
 556         saa7146_write(dev, MC2, (MASK_05 | MASK_06 | MASK_21 | MASK_22) );
 557 }
 558 
 559 /* calculate the new memory offsets for a desired position */
 560 static void saa7146_set_position(struct saa7146_dev *dev, int w_x, int w_y, int w_height, enum v4l2_field field, u32 pixelformat)
 561 {
 562         struct saa7146_vv *vv = dev->vv_data;
 563         struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev, pixelformat);
 564 
 565         int b_depth = vv->ov_fmt->depth;
 566         int b_bpl = vv->ov_fb.fmt.bytesperline;
 567         /* The unsigned long cast is to remove a 64-bit compile warning since
 568            it looks like a 64-bit address is cast to a 32-bit value, even
 569            though the base pointer is really a 32-bit physical address that
 570            goes into a 32-bit DMA register.
 571            FIXME: might not work on some 64-bit platforms, but see the FIXME
 572            in struct v4l2_framebuffer (videodev2.h) for that.
 573          */
 574         u32 base = (u32)(unsigned long)vv->ov_fb.base;
 575 
 576         struct  saa7146_video_dma vdma1;
 577 
 578         /* calculate memory offsets for picture, look if we shall top-down-flip */
 579         vdma1.pitch     = 2*b_bpl;
 580         if ( 0 == vv->vflip ) {
 581                 vdma1.base_even = base + (w_y * (vdma1.pitch/2)) + (w_x * (b_depth / 8));
 582                 vdma1.base_odd  = vdma1.base_even + (vdma1.pitch / 2);
 583                 vdma1.prot_addr = vdma1.base_even + (w_height * (vdma1.pitch / 2));
 584         }
 585         else {
 586                 vdma1.base_even = base + ((w_y+w_height) * (vdma1.pitch/2)) + (w_x * (b_depth / 8));
 587                 vdma1.base_odd  = vdma1.base_even - (vdma1.pitch / 2);
 588                 vdma1.prot_addr = vdma1.base_odd - (w_height * (vdma1.pitch / 2));
 589         }
 590 
 591         if (V4L2_FIELD_HAS_BOTH(field)) {
 592         } else if (field == V4L2_FIELD_ALTERNATE) {
 593                 /* fixme */
 594                 vdma1.base_odd = vdma1.prot_addr;
 595                 vdma1.pitch /= 2;
 596         } else if (field == V4L2_FIELD_TOP) {
 597                 vdma1.base_odd = vdma1.prot_addr;
 598                 vdma1.pitch /= 2;
 599         } else if (field == V4L2_FIELD_BOTTOM) {
 600                 vdma1.base_odd = vdma1.base_even;
 601                 vdma1.base_even = vdma1.prot_addr;
 602                 vdma1.pitch /= 2;
 603         }
 604 
 605         if ( 0 != vv->vflip ) {
 606                 vdma1.pitch *= -1;
 607         }
 608 
 609         vdma1.base_page = sfmt->swap;
 610         vdma1.num_line_byte = (vv->standard->v_field<<16)+vv->standard->h_pixels;
 611 
 612         saa7146_write_out_dma(dev, 1, &vdma1);
 613 }
 614 
 615 static void saa7146_set_output_format(struct saa7146_dev *dev, unsigned long palette)
 616 {
 617         u32 clip_format = saa7146_read(dev, CLIP_FORMAT_CTRL);
 618 
 619         /* call helper function */
 620         calculate_output_format_register(dev,palette,&clip_format);
 621 
 622         /* update the hps registers */
 623         saa7146_write(dev, CLIP_FORMAT_CTRL, clip_format);
 624         saa7146_write(dev, MC2, (MASK_05 | MASK_21));
 625 }
 626 
 627 /* select input-source */
 628 void saa7146_set_hps_source_and_sync(struct saa7146_dev *dev, int source, int sync)
 629 {
 630         struct saa7146_vv *vv = dev->vv_data;
 631         u32 hps_ctrl = 0;
 632 
 633         /* read old state */
 634         hps_ctrl = saa7146_read(dev, HPS_CTRL);
 635 
 636         hps_ctrl &= ~( MASK_31 | MASK_30 | MASK_28 );
 637         hps_ctrl |= (source << 30) | (sync << 28);
 638 
 639         /* write back & upload register */
 640         saa7146_write(dev, HPS_CTRL, hps_ctrl);
 641         saa7146_write(dev, MC2, (MASK_05 | MASK_21));
 642 
 643         vv->current_hps_source = source;
 644         vv->current_hps_sync = sync;
 645 }
 646 EXPORT_SYMBOL_GPL(saa7146_set_hps_source_and_sync);
 647 
 648 int saa7146_enable_overlay(struct saa7146_fh *fh)
 649 {
 650         struct saa7146_dev *dev = fh->dev;
 651         struct saa7146_vv *vv = dev->vv_data;
 652 
 653         saa7146_set_window(dev, vv->ov.win.w.width, vv->ov.win.w.height, vv->ov.win.field);
 654         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);
 655         saa7146_set_output_format(dev, vv->ov_fmt->trans);
 656         saa7146_set_clipping_rect(fh);
 657 
 658         /* enable video dma1 */
 659         saa7146_write(dev, MC1, (MASK_06 | MASK_22));
 660         return 0;
 661 }
 662 
 663 void saa7146_disable_overlay(struct saa7146_fh *fh)
 664 {
 665         struct saa7146_dev *dev = fh->dev;
 666 
 667         /* disable clipping + video dma1 */
 668         saa7146_disable_clipping(dev);
 669         saa7146_write(dev, MC1, MASK_22);
 670 }
 671 
 672 void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma)
 673 {
 674         int where = 0;
 675 
 676         if( which < 1 || which > 3) {
 677                 return;
 678         }
 679 
 680         /* calculate starting address */
 681         where  = (which-1)*0x18;
 682 
 683         saa7146_write(dev, where,       vdma->base_odd);
 684         saa7146_write(dev, where+0x04,  vdma->base_even);
 685         saa7146_write(dev, where+0x08,  vdma->prot_addr);
 686         saa7146_write(dev, where+0x0c,  vdma->pitch);
 687         saa7146_write(dev, where+0x10,  vdma->base_page);
 688         saa7146_write(dev, where+0x14,  vdma->num_line_byte);
 689 
 690         /* upload */
 691         saa7146_write(dev, MC2, (MASK_02<<(which-1))|(MASK_18<<(which-1)));
 692 /*
 693         printk("vdma%d.base_even:     0x%08x\n", which,vdma->base_even);
 694         printk("vdma%d.base_odd:      0x%08x\n", which,vdma->base_odd);
 695         printk("vdma%d.prot_addr:     0x%08x\n", which,vdma->prot_addr);
 696         printk("vdma%d.base_page:     0x%08x\n", which,vdma->base_page);
 697         printk("vdma%d.pitch:         0x%08x\n", which,vdma->pitch);
 698         printk("vdma%d.num_line_byte: 0x%08x\n", which,vdma->num_line_byte);
 699 */
 700 }
 701 
 702 static int calculate_video_dma_grab_packed(struct saa7146_dev* dev, struct saa7146_buf *buf)
 703 {
 704         struct saa7146_vv *vv = dev->vv_data;
 705         struct saa7146_video_dma vdma1;
 706 
 707         struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
 708 
 709         int width = buf->fmt->width;
 710         int height = buf->fmt->height;
 711         int bytesperline = buf->fmt->bytesperline;
 712         enum v4l2_field field = buf->fmt->field;
 713 
 714         int depth = sfmt->depth;
 715 
 716         DEB_CAP("[size=%dx%d,fields=%s]\n",
 717                 width, height, v4l2_field_names[field]);
 718 
 719         if( bytesperline != 0) {
 720                 vdma1.pitch = bytesperline*2;
 721         } else {
 722                 vdma1.pitch = (width*depth*2)/8;
 723         }
 724         vdma1.num_line_byte     = ((vv->standard->v_field<<16) + vv->standard->h_pixels);
 725         vdma1.base_page         = buf->pt[0].dma | ME1 | sfmt->swap;
 726 
 727         if( 0 != vv->vflip ) {
 728                 vdma1.prot_addr = buf->pt[0].offset;
 729                 vdma1.base_even = buf->pt[0].offset+(vdma1.pitch/2)*height;
 730                 vdma1.base_odd  = vdma1.base_even - (vdma1.pitch/2);
 731         } else {
 732                 vdma1.base_even = buf->pt[0].offset;
 733                 vdma1.base_odd  = vdma1.base_even + (vdma1.pitch/2);
 734                 vdma1.prot_addr = buf->pt[0].offset+(vdma1.pitch/2)*height;
 735         }
 736 
 737         if (V4L2_FIELD_HAS_BOTH(field)) {
 738         } else if (field == V4L2_FIELD_ALTERNATE) {
 739                 /* fixme */
 740                 if ( vv->last_field == V4L2_FIELD_TOP ) {
 741                         vdma1.base_odd  = vdma1.prot_addr;
 742                         vdma1.pitch /= 2;
 743                 } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) {
 744                         vdma1.base_odd  = vdma1.base_even;
 745                         vdma1.base_even = vdma1.prot_addr;
 746                         vdma1.pitch /= 2;
 747                 }
 748         } else if (field == V4L2_FIELD_TOP) {
 749                 vdma1.base_odd  = vdma1.prot_addr;
 750                 vdma1.pitch /= 2;
 751         } else if (field == V4L2_FIELD_BOTTOM) {
 752                 vdma1.base_odd  = vdma1.base_even;
 753                 vdma1.base_even = vdma1.prot_addr;
 754                 vdma1.pitch /= 2;
 755         }
 756 
 757         if( 0 != vv->vflip ) {
 758                 vdma1.pitch *= -1;
 759         }
 760 
 761         saa7146_write_out_dma(dev, 1, &vdma1);
 762         return 0;
 763 }
 764 
 765 static int calc_planar_422(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3)
 766 {
 767         int height = buf->fmt->height;
 768         int width = buf->fmt->width;
 769 
 770         vdma2->pitch    = width;
 771         vdma3->pitch    = width;
 772 
 773         /* fixme: look at bytesperline! */
 774 
 775         if( 0 != vv->vflip ) {
 776                 vdma2->prot_addr        = buf->pt[1].offset;
 777                 vdma2->base_even        = ((vdma2->pitch/2)*height)+buf->pt[1].offset;
 778                 vdma2->base_odd         = vdma2->base_even - (vdma2->pitch/2);
 779 
 780                 vdma3->prot_addr        = buf->pt[2].offset;
 781                 vdma3->base_even        = ((vdma3->pitch/2)*height)+buf->pt[2].offset;
 782                 vdma3->base_odd         = vdma3->base_even - (vdma3->pitch/2);
 783         } else {
 784                 vdma3->base_even        = buf->pt[2].offset;
 785                 vdma3->base_odd         = vdma3->base_even + (vdma3->pitch/2);
 786                 vdma3->prot_addr        = (vdma3->pitch/2)*height+buf->pt[2].offset;
 787 
 788                 vdma2->base_even        = buf->pt[1].offset;
 789                 vdma2->base_odd         = vdma2->base_even + (vdma2->pitch/2);
 790                 vdma2->prot_addr        = (vdma2->pitch/2)*height+buf->pt[1].offset;
 791         }
 792 
 793         return 0;
 794 }
 795 
 796 static int calc_planar_420(struct saa7146_vv *vv, struct saa7146_buf *buf, struct saa7146_video_dma *vdma2, struct saa7146_video_dma *vdma3)
 797 {
 798         int height = buf->fmt->height;
 799         int width = buf->fmt->width;
 800 
 801         vdma2->pitch    = width/2;
 802         vdma3->pitch    = width/2;
 803 
 804         if( 0 != vv->vflip ) {
 805                 vdma2->prot_addr        = buf->pt[2].offset;
 806                 vdma2->base_even        = ((vdma2->pitch/2)*height)+buf->pt[2].offset;
 807                 vdma2->base_odd         = vdma2->base_even - (vdma2->pitch/2);
 808 
 809                 vdma3->prot_addr        = buf->pt[1].offset;
 810                 vdma3->base_even        = ((vdma3->pitch/2)*height)+buf->pt[1].offset;
 811                 vdma3->base_odd         = vdma3->base_even - (vdma3->pitch/2);
 812 
 813         } else {
 814                 vdma3->base_even        = buf->pt[2].offset;
 815                 vdma3->base_odd         = vdma3->base_even + (vdma3->pitch);
 816                 vdma3->prot_addr        = (vdma3->pitch/2)*height+buf->pt[2].offset;
 817 
 818                 vdma2->base_even        = buf->pt[1].offset;
 819                 vdma2->base_odd         = vdma2->base_even + (vdma2->pitch);
 820                 vdma2->prot_addr        = (vdma2->pitch/2)*height+buf->pt[1].offset;
 821         }
 822         return 0;
 823 }
 824 
 825 static int calculate_video_dma_grab_planar(struct saa7146_dev* dev, struct saa7146_buf *buf)
 826 {
 827         struct saa7146_vv *vv = dev->vv_data;
 828         struct saa7146_video_dma vdma1;
 829         struct saa7146_video_dma vdma2;
 830         struct saa7146_video_dma vdma3;
 831 
 832         struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
 833 
 834         int width = buf->fmt->width;
 835         int height = buf->fmt->height;
 836         enum v4l2_field field = buf->fmt->field;
 837 
 838         BUG_ON(0 == buf->pt[0].dma);
 839         BUG_ON(0 == buf->pt[1].dma);
 840         BUG_ON(0 == buf->pt[2].dma);
 841 
 842         DEB_CAP("[size=%dx%d,fields=%s]\n",
 843                 width, height, v4l2_field_names[field]);
 844 
 845         /* fixme: look at bytesperline! */
 846 
 847         /* fixme: what happens for user space buffers here?. The offsets are
 848            most likely wrong, this version here only works for page-aligned
 849            buffers, modifications to the pagetable-functions are necessary...*/
 850 
 851         vdma1.pitch             = width*2;
 852         vdma1.num_line_byte     = ((vv->standard->v_field<<16) + vv->standard->h_pixels);
 853         vdma1.base_page         = buf->pt[0].dma | ME1;
 854 
 855         if( 0 != vv->vflip ) {
 856                 vdma1.prot_addr = buf->pt[0].offset;
 857                 vdma1.base_even = ((vdma1.pitch/2)*height)+buf->pt[0].offset;
 858                 vdma1.base_odd  = vdma1.base_even - (vdma1.pitch/2);
 859         } else {
 860                 vdma1.base_even = buf->pt[0].offset;
 861                 vdma1.base_odd  = vdma1.base_even + (vdma1.pitch/2);
 862                 vdma1.prot_addr = (vdma1.pitch/2)*height+buf->pt[0].offset;
 863         }
 864 
 865         vdma2.num_line_byte     = 0; /* unused */
 866         vdma2.base_page         = buf->pt[1].dma | ME1;
 867 
 868         vdma3.num_line_byte     = 0; /* unused */
 869         vdma3.base_page         = buf->pt[2].dma | ME1;
 870 
 871         switch( sfmt->depth ) {
 872                 case 12: {
 873                         calc_planar_420(vv,buf,&vdma2,&vdma3);
 874                         break;
 875                 }
 876                 case 16: {
 877                         calc_planar_422(vv,buf,&vdma2,&vdma3);
 878                         break;
 879                 }
 880                 default: {
 881                         return -1;
 882                 }
 883         }
 884 
 885         if (V4L2_FIELD_HAS_BOTH(field)) {
 886         } else if (field == V4L2_FIELD_ALTERNATE) {
 887                 /* fixme */
 888                 vdma1.base_odd  = vdma1.prot_addr;
 889                 vdma1.pitch /= 2;
 890                 vdma2.base_odd  = vdma2.prot_addr;
 891                 vdma2.pitch /= 2;
 892                 vdma3.base_odd  = vdma3.prot_addr;
 893                 vdma3.pitch /= 2;
 894         } else if (field == V4L2_FIELD_TOP) {
 895                 vdma1.base_odd  = vdma1.prot_addr;
 896                 vdma1.pitch /= 2;
 897                 vdma2.base_odd  = vdma2.prot_addr;
 898                 vdma2.pitch /= 2;
 899                 vdma3.base_odd  = vdma3.prot_addr;
 900                 vdma3.pitch /= 2;
 901         } else if (field == V4L2_FIELD_BOTTOM) {
 902                 vdma1.base_odd  = vdma1.base_even;
 903                 vdma1.base_even = vdma1.prot_addr;
 904                 vdma1.pitch /= 2;
 905                 vdma2.base_odd  = vdma2.base_even;
 906                 vdma2.base_even = vdma2.prot_addr;
 907                 vdma2.pitch /= 2;
 908                 vdma3.base_odd  = vdma3.base_even;
 909                 vdma3.base_even = vdma3.prot_addr;
 910                 vdma3.pitch /= 2;
 911         }
 912 
 913         if( 0 != vv->vflip ) {
 914                 vdma1.pitch *= -1;
 915                 vdma2.pitch *= -1;
 916                 vdma3.pitch *= -1;
 917         }
 918 
 919         saa7146_write_out_dma(dev, 1, &vdma1);
 920         if( (sfmt->flags & FORMAT_BYTE_SWAP) != 0 ) {
 921                 saa7146_write_out_dma(dev, 3, &vdma2);
 922                 saa7146_write_out_dma(dev, 2, &vdma3);
 923         } else {
 924                 saa7146_write_out_dma(dev, 2, &vdma2);
 925                 saa7146_write_out_dma(dev, 3, &vdma3);
 926         }
 927         return 0;
 928 }
 929 
 930 static void program_capture_engine(struct saa7146_dev *dev, int planar)
 931 {
 932         struct saa7146_vv *vv = dev->vv_data;
 933         int count = 0;
 934 
 935         unsigned long e_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_E_FID_A : CMD_E_FID_B;
 936         unsigned long o_wait = vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? CMD_O_FID_A : CMD_O_FID_B;
 937 
 938         /* wait for o_fid_a/b / e_fid_a/b toggle only if rps register 0 is not set*/
 939         WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | o_wait);
 940         WRITE_RPS0(CMD_PAUSE | CMD_OAN | CMD_SIG0 | e_wait);
 941 
 942         /* set rps register 0 */
 943         WRITE_RPS0(CMD_WR_REG | (1 << 8) | (MC2/4));
 944         WRITE_RPS0(MASK_27 | MASK_11);
 945 
 946         /* turn on video-dma1 */
 947         WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
 948         WRITE_RPS0(MASK_06 | MASK_22);                  /* => mask */
 949         WRITE_RPS0(MASK_06 | MASK_22);                  /* => values */
 950         if( 0 != planar ) {
 951                 /* turn on video-dma2 */
 952                 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
 953                 WRITE_RPS0(MASK_05 | MASK_21);                  /* => mask */
 954                 WRITE_RPS0(MASK_05 | MASK_21);                  /* => values */
 955 
 956                 /* turn on video-dma3 */
 957                 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
 958                 WRITE_RPS0(MASK_04 | MASK_20);                  /* => mask */
 959                 WRITE_RPS0(MASK_04 | MASK_20);                  /* => values */
 960         }
 961 
 962         /* wait for o_fid_a/b / e_fid_a/b toggle */
 963         if ( vv->last_field == V4L2_FIELD_INTERLACED ) {
 964                 WRITE_RPS0(CMD_PAUSE | o_wait);
 965                 WRITE_RPS0(CMD_PAUSE | e_wait);
 966         } else if ( vv->last_field == V4L2_FIELD_TOP ) {
 967                 WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09));
 968                 WRITE_RPS0(CMD_PAUSE | o_wait);
 969         } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) {
 970                 WRITE_RPS0(CMD_PAUSE | (vv->current_hps_sync == SAA7146_HPS_SYNC_PORT_A ? MASK_10 : MASK_09));
 971                 WRITE_RPS0(CMD_PAUSE | e_wait);
 972         }
 973 
 974         /* turn off video-dma1 */
 975         WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
 976         WRITE_RPS0(MASK_22 | MASK_06);                  /* => mask */
 977         WRITE_RPS0(MASK_22);                            /* => values */
 978         if( 0 != planar ) {
 979                 /* turn off video-dma2 */
 980                 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
 981                 WRITE_RPS0(MASK_05 | MASK_21);                  /* => mask */
 982                 WRITE_RPS0(MASK_21);                            /* => values */
 983 
 984                 /* turn off video-dma3 */
 985                 WRITE_RPS0(CMD_WR_REG_MASK | (MC1/4));
 986                 WRITE_RPS0(MASK_04 | MASK_20);                  /* => mask */
 987                 WRITE_RPS0(MASK_20);                            /* => values */
 988         }
 989 
 990         /* generate interrupt */
 991         WRITE_RPS0(CMD_INTERRUPT);
 992 
 993         /* stop */
 994         WRITE_RPS0(CMD_STOP);
 995 }
 996 
 997 void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next)
 998 {
 999         struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
1000         struct saa7146_vv *vv = dev->vv_data;
1001         u32 vdma1_prot_addr;
1002 
1003         DEB_CAP("buf:%p, next:%p\n", buf, next);
1004 
1005         vdma1_prot_addr = saa7146_read(dev, PROT_ADDR1);
1006         if( 0 == vdma1_prot_addr ) {
1007                 /* clear out beginning of streaming bit (rps register 0)*/
1008                 DEB_CAP("forcing sync to new frame\n");
1009                 saa7146_write(dev, MC2, MASK_27 );
1010         }
1011 
1012         saa7146_set_window(dev, buf->fmt->width, buf->fmt->height, buf->fmt->field);
1013         saa7146_set_output_format(dev, sfmt->trans);
1014         saa7146_disable_clipping(dev);
1015 
1016         if ( vv->last_field == V4L2_FIELD_INTERLACED ) {
1017         } else if ( vv->last_field == V4L2_FIELD_TOP ) {
1018                 vv->last_field = V4L2_FIELD_BOTTOM;
1019         } else if ( vv->last_field == V4L2_FIELD_BOTTOM ) {
1020                 vv->last_field = V4L2_FIELD_TOP;
1021         }
1022 
1023         if( 0 != IS_PLANAR(sfmt->trans)) {
1024                 calculate_video_dma_grab_planar(dev, buf);
1025                 program_capture_engine(dev,1);
1026         } else {
1027                 calculate_video_dma_grab_packed(dev, buf);
1028                 program_capture_engine(dev,0);
1029         }
1030 
1031 /*
1032         printk("vdma%d.base_even:     0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1));
1033         printk("vdma%d.base_odd:      0x%08x\n", 1,saa7146_read(dev,BASE_ODD1));
1034         printk("vdma%d.prot_addr:     0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1));
1035         printk("vdma%d.base_page:     0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1));
1036         printk("vdma%d.pitch:         0x%08x\n", 1,saa7146_read(dev,PITCH1));
1037         printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1));
1038         printk("vdma%d => vptr      : 0x%08x\n", 1,saa7146_read(dev,PCI_VDP1));
1039 */
1040 
1041         /* write the address of the rps-program */
1042         saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle);
1043 
1044         /* turn on rps */
1045         saa7146_write(dev, MC1, (MASK_12 | MASK_28));
1046 }
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root/drivers/media/common/saa7146/saa7146_hlp.c

DEFINITIONS
