drivers/media/dvb/ttpci/budget-core.c

   1 /*
   2  * budget-core.c: driver for the SAA7146 based Budget DVB cards
   3  *
   4  * Compiled from various sources by Michael Hunold <michael@mihu.de>
   5  *
   6  * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
   7  *
   8  * Copyright (C) 1999-2002 Ralph  Metzler
   9  *                       & Marcus Metzler for convergence integrated media GmbH
  10  *
  11  * 26feb2004 Support for FS Activy Card (Grundig tuner) by
  12  *           Michael Dreher <michael@5dot1.de>,
  13  *           Oliver Endriss <o.endriss@gmx.de>,
  14  *           Andreas 'randy' Weinberger
  15  *
  16  * This program is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU General Public License
  18  * as published by the Free Software Foundation; either version 2
  19  * of the License, or (at your option) any later version.
  20  *
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; if not, write to the Free Software
  30  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  31  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
  32  *
  33  *
  34  * the project's page is at http://www.linuxtv.org/
  35  */
  36
  37
  38 #include "budget.h"
  39 #include "ttpci-eeprom.h"
  40
  41 #define TS_WIDTH                (2 * TS_SIZE)
  42 #define TS_WIDTH_ACTIVY         TS_SIZE
  43 #define TS_WIDTH_DVBC           TS_SIZE
  44 #define TS_HEIGHT_MASK          0xf00
  45 #define TS_HEIGHT_MASK_ACTIVY   0xc00
  46 #define TS_HEIGHT_MASK_DVBC     0xe00
  47 #define TS_MIN_BUFSIZE_K        188
  48 #define TS_MAX_BUFSIZE_K        1410
  49 #define TS_MAX_BUFSIZE_K_ACTIVY 564
  50 #define TS_MAX_BUFSIZE_K_DVBC   1316
  51 #define BUFFER_WARNING_WAIT     (30*HZ)
  52
  53 int budget_debug;
  54 static int dma_buffer_size = TS_MIN_BUFSIZE_K;
  55 module_param_named(debug, budget_debug, int, 0644);
  56 module_param_named(bufsize, dma_buffer_size, int, 0444);
  57 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
  58 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
  59
  60 /****************************************************************************
  61  * TT budget / WinTV Nova
  62  ****************************************************************************/
  63
  64 static int stop_ts_capture(struct budget *budget)
  65 {
  66         dprintk(2, "budget: %p\n", budget);
  67
  68         saa7146_write(budget->dev, MC1, MASK_20);       // DMA3 off
  69         SAA7146_IER_DISABLE(budget->dev, MASK_10);
  70         return 0;
  71 }
  72
  73 static int start_ts_capture(struct budget *budget)
  74 {
  75         struct saa7146_dev *dev = budget->dev;
  76
  77         dprintk(2, "budget: %p\n", budget);
  78
  79         if (!budget->feeding || !budget->fe_synced)
  80                 return 0;
  81
  82         saa7146_write(dev, MC1, MASK_20);       // DMA3 off
  83
  84         memset(budget->grabbing, 0x00, budget->buffer_size);
  85
  86         saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
  87
  88         budget->ttbp = 0;
  89
  90         /*
  91          *  Signal path on the Activy:
  92          *
  93          *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
  94          *
  95          *  Since the tuner feeds 204 bytes packets into the SAA7146,
  96          *  DMA3 is configured to strip the trailing 16 FEC bytes:
  97          *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
  98          */
  99
 100         switch(budget->card->type) {
 101         case BUDGET_FS_ACTIVY:
 102                 saa7146_write(dev, DD1_INIT, 0x04000000);
 103                 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 104                 saa7146_write(dev, BRS_CTRL, 0x00000000);
 105                 break;
 106         case BUDGET_PATCH:
 107                 saa7146_write(dev, DD1_INIT, 0x00000200);
 108                 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 109                 saa7146_write(dev, BRS_CTRL, 0x60000000);
 110                 break;
 111         case BUDGET_CIN1200C_MK3:
 112         case BUDGET_KNC1C_MK3:
 113         case BUDGET_KNC1CP_MK3:
 114                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
 115                         saa7146_write(dev, DD1_INIT, 0x06000200);
 116                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 117                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 118                 } else {
 119                         saa7146_write(dev, DD1_INIT, 0x00000600);
 120                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 121                         saa7146_write(dev, BRS_CTRL, 0x60000000);
 122                 }
 123                 break;
 124         default:
 125                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
 126                         saa7146_write(dev, DD1_INIT, 0x06000200);
 127                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 128                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 129                 } else {
 130                         saa7146_write(dev, DD1_INIT, 0x02000600);
 131                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 132                         saa7146_write(dev, BRS_CTRL, 0x60000000);
 133                 }
 134         }
 135
 136         saa7146_write(dev, MC2, (MASK_08 | MASK_24));
 137         mdelay(10);
 138
 139         saa7146_write(dev, BASE_ODD3, 0);
 140         if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
 141                 // using odd/even buffers
 142                 saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
 143         } else {
 144                 // using a single buffer
 145                 saa7146_write(dev, BASE_EVEN3, 0);
 146         }
 147         saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
 148         saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
 149
 150         saa7146_write(dev, PITCH3, budget->buffer_width);
 151         saa7146_write(dev, NUM_LINE_BYTE3,
 152                         (budget->buffer_height << 16) | budget->buffer_width);
 153
 154         saa7146_write(dev, MC2, (MASK_04 | MASK_20));
 155
 156         SAA7146_ISR_CLEAR(budget->dev, MASK_10);        /* VPE */
 157         SAA7146_IER_ENABLE(budget->dev, MASK_10);       /* VPE */
 158         saa7146_write(dev, MC1, (MASK_04 | MASK_20));   /* DMA3 on */
 159
 160         return 0;
 161 }
 162
 163 static int budget_read_fe_status(struct dvb_frontend *fe, fe_status_t *status)
 164 {
 165         struct budget *budget = (struct budget *) fe->dvb->priv;
 166         int synced;
 167         int ret;
 168
 169         if (budget->read_fe_status)
 170                 ret = budget->read_fe_status(fe, status);
 171         else
 172                 ret = -EINVAL;
 173
 174         if (!ret) {
 175                 synced = (*status & FE_HAS_LOCK);
 176                 if (synced != budget->fe_synced) {
 177                         budget->fe_synced = synced;
 178                         spin_lock(&budget->feedlock);
 179                         if (synced)
 180                                 start_ts_capture(budget);
 181                         else
 182                                 stop_ts_capture(budget);
 183                         spin_unlock(&budget->feedlock);
 184                 }
 185         }
 186         return ret;
 187 }
 188
 189 static void vpeirq(unsigned long data)
 190 {
 191         struct budget *budget = (struct budget *) data;
 192         u8 *mem = (u8 *) (budget->grabbing);
 193         u32 olddma = budget->ttbp;
 194         u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
 195         u32 count;
 196
 197         /* Ensure streamed PCI data is synced to CPU */
 198         pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE);
 199
 200         /* nearest lower position divisible by 188 */
 201         newdma -= newdma % 188;
 202
 203         if (newdma >= budget->buffer_size)
 204                 return;
 205
 206         budget->ttbp = newdma;
 207
 208         if (budget->feeding == 0 || newdma == olddma)
 209                 return;
 210
 211         if (newdma > olddma) {  /* no wraparound, dump olddma..newdma */
 212                 count = newdma - olddma;
 213                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 214         } else {                /* wraparound, dump olddma..buflen and 0..newdma */
 215                 count = budget->buffer_size - olddma;
 216                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 217                 count += newdma;
 218                 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
 219         }
 220
 221         if (count > budget->buffer_warning_threshold)
 222                 budget->buffer_warnings++;
 223
 224         if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
 225                 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
 226                         budget->dev->name, __func__, budget->buffer_warnings, count);
 227                 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
 228                 budget->buffer_warnings = 0;
 229         }
 230 }
 231
 232
 233 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
 234                           int uselocks, int nobusyloop)
 235 {
 236         struct saa7146_dev *saa = budget->dev;
 237         int result = 0;
 238         unsigned long flags = 0;
 239
 240         if (count > 4 || count <= 0)
 241                 return 0;
 242
 243         if (uselocks)
 244                 spin_lock_irqsave(&budget->debilock, flags);
 245
 246         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 247                 if (uselocks)
 248                         spin_unlock_irqrestore(&budget->debilock, flags);
 249                 return result;
 250         }
 251
 252         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
 253         saa7146_write(saa, DEBI_CONFIG, config);
 254         saa7146_write(saa, DEBI_PAGE, 0);
 255         saa7146_write(saa, MC2, (2 << 16) | 2);
 256
 257         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 258                 if (uselocks)
 259                         spin_unlock_irqrestore(&budget->debilock, flags);
 260                 return result;
 261         }
 262
 263         result = saa7146_read(saa, DEBI_AD);
 264         result &= (0xffffffffUL >> ((4 - count) * 8));
 265
 266         if (uselocks)
 267                 spin_unlock_irqrestore(&budget->debilock, flags);
 268
 269         return result;
 270 }
 271
 272 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
 273                            int count, u32 value, int uselocks, int nobusyloop)
 274 {
 275         struct saa7146_dev *saa = budget->dev;
 276         unsigned long flags = 0;
 277         int result;
 278
 279         if (count > 4 || count <= 0)
 280                 return 0;
 281
 282         if (uselocks)
 283                 spin_lock_irqsave(&budget->debilock, flags);
 284
 285         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 286                 if (uselocks)
 287                         spin_unlock_irqrestore(&budget->debilock, flags);
 288                 return result;
 289         }
 290
 291         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
 292         saa7146_write(saa, DEBI_CONFIG, config);
 293         saa7146_write(saa, DEBI_PAGE, 0);
 294         saa7146_write(saa, DEBI_AD, value);
 295         saa7146_write(saa, MC2, (2 << 16) | 2);
 296
 297         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 298                 if (uselocks)
 299                         spin_unlock_irqrestore(&budget->debilock, flags);
 300                 return result;
 301         }
 302
 303         if (uselocks)
 304                 spin_unlock_irqrestore(&budget->debilock, flags);
 305         return 0;
 306 }
 307
 308
 309 /****************************************************************************
 310  * DVB API SECTION
 311  ****************************************************************************/
 312
 313 static int budget_start_feed(struct dvb_demux_feed *feed)
 314 {
 315         struct dvb_demux *demux = feed->demux;
 316         struct budget *budget = (struct budget *) demux->priv;
 317         int status = 0;
 318
 319         dprintk(2, "budget: %p\n", budget);
 320
 321         if (!demux->dmx.frontend)
 322                 return -EINVAL;
 323
 324         spin_lock(&budget->feedlock);
 325         feed->pusi_seen = 0; /* have a clean section start */
 326         if (budget->feeding++ == 0)
 327                 status = start_ts_capture(budget);
 328         spin_unlock(&budget->feedlock);
 329         return status;
 330 }
 331
 332 static int budget_stop_feed(struct dvb_demux_feed *feed)
 333 {
 334         struct dvb_demux *demux = feed->demux;
 335         struct budget *budget = (struct budget *) demux->priv;
 336         int status = 0;
 337
 338         dprintk(2, "budget: %p\n", budget);
 339
 340         spin_lock(&budget->feedlock);
 341         if (--budget->feeding == 0)
 342                 status = stop_ts_capture(budget);
 343         spin_unlock(&budget->feedlock);
 344         return status;
 345 }
 346
 347 static int budget_register(struct budget *budget)
 348 {
 349         struct dvb_demux *dvbdemux = &budget->demux;
 350         int ret;
 351
 352         dprintk(2, "budget: %p\n", budget);
 353
 354         dvbdemux->priv = (void *) budget;
 355
 356         dvbdemux->filternum = 256;
 357         dvbdemux->feednum = 256;
 358         dvbdemux->start_feed = budget_start_feed;
 359         dvbdemux->stop_feed = budget_stop_feed;
 360         dvbdemux->write_to_decoder = NULL;
 361
 362         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 363                                       DMX_MEMORY_BASED_FILTERING);
 364
 365         dvb_dmx_init(&budget->demux);
 366
 367         budget->dmxdev.filternum = 256;
 368         budget->dmxdev.demux = &dvbdemux->dmx;
 369         budget->dmxdev.capabilities = 0;
 370
 371         dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
 372
 373         budget->hw_frontend.source = DMX_FRONTEND_0;
 374
 375         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 376
 377         if (ret < 0)
 378                 return ret;
 379
 380         budget->mem_frontend.source = DMX_MEMORY_FE;
 381         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 382         if (ret < 0)
 383                 return ret;
 384
 385         ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 386         if (ret < 0)
 387                 return ret;
 388
 389         dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
 390
 391         return 0;
 392 }
 393
 394 static void budget_unregister(struct budget *budget)
 395 {
 396         struct dvb_demux *dvbdemux = &budget->demux;
 397
 398         dprintk(2, "budget: %p\n", budget);
 399
 400         dvb_net_release(&budget->dvb_net);
 401
 402         dvbdemux->dmx.close(&dvbdemux->dmx);
 403         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 404         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 405
 406         dvb_dmxdev_release(&budget->dmxdev);
 407         dvb_dmx_release(&budget->demux);
 408 }
 409
 410 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
 411                       struct saa7146_pci_extension_data *info,
 412                       struct module *owner, short *adapter_nums)
 413 {
 414         int ret = 0;
 415         struct budget_info *bi = info->ext_priv;
 416         int max_bufsize;
 417         int height_mask;
 418
 419         memset(budget, 0, sizeof(struct budget));
 420
 421         dprintk(2, "dev: %p, budget: %p\n", dev, budget);
 422
 423         budget->card = bi;
 424         budget->dev = (struct saa7146_dev *) dev;
 425
 426         switch(budget->card->type) {
 427         case BUDGET_FS_ACTIVY:
 428                 budget->buffer_width = TS_WIDTH_ACTIVY;
 429                 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
 430                 height_mask = TS_HEIGHT_MASK_ACTIVY;
 431                 break;
 432
 433         case BUDGET_KNC1C:
 434         case BUDGET_KNC1CP:
 435         case BUDGET_CIN1200C:
 436         case BUDGET_KNC1C_MK3:
 437         case BUDGET_KNC1CP_MK3:
 438         case BUDGET_CIN1200C_MK3:
 439                 budget->buffer_width = TS_WIDTH_DVBC;
 440                 max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
 441                 height_mask = TS_HEIGHT_MASK_DVBC;
 442                 break;
 443
 444         default:
 445                 budget->buffer_width = TS_WIDTH;
 446                 max_bufsize = TS_MAX_BUFSIZE_K;
 447                 height_mask = TS_HEIGHT_MASK;
 448         }
 449
 450         if (dma_buffer_size < TS_MIN_BUFSIZE_K)
 451                 dma_buffer_size = TS_MIN_BUFSIZE_K;
 452         else if (dma_buffer_size > max_bufsize)
 453                 dma_buffer_size = max_bufsize;
 454
 455         budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
 456         if (budget->buffer_height > 0xfff) {
 457                 budget->buffer_height /= 2;
 458                 budget->buffer_height &= height_mask;
 459                 budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
 460         } else {
 461                 budget->buffer_height &= height_mask;
 462                 budget->buffer_size = budget->buffer_height * budget->buffer_width;
 463         }
 464         budget->buffer_warning_threshold = budget->buffer_size * 80/100;
 465         budget->buffer_warnings = 0;
 466         budget->buffer_warning_time = jiffies;
 467
 468         dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
 469                 budget->dev->name,
 470                 budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
 471                 budget->buffer_width, budget->buffer_height);
 472         printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
 473
 474         ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,
 475                                    owner, &budget->dev->pci->dev, adapter_nums);
 476         if (ret < 0)
 477                 return ret;
 478
 479         /* set dd1 stream a & b */
 480         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 481         saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 482         saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 483         saa7146_write(dev, DD1_INIT, 0x02000000);
 484         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 485
 486         if (bi->type != BUDGET_FS_ACTIVY)
 487                 budget->video_port = BUDGET_VIDEO_PORTB;
 488         else
 489                 budget->video_port = BUDGET_VIDEO_PORTA;
 490         spin_lock_init(&budget->feedlock);
 491         spin_lock_init(&budget->debilock);
 492
 493         /* the Siemens DVB needs this if you want to have the i2c chips
 494            get recognized before the main driver is loaded */
 495         if (bi->type != BUDGET_FS_ACTIVY)
 496                 saa7146_write(dev, GPIO_CTRL, 0x500000);        /* GPIO 3 = 1 */
 497
 498         strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
 499
 500         saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
 501         strcpy(budget->i2c_adap.name, budget->card->name);
 502
 503         if (i2c_add_adapter(&budget->i2c_adap) < 0) {
 504                 ret = -ENOMEM;
 505                 goto err_dvb_unregister;
 506         }
 507
 508         ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
 509
 510         budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);
 511         if (NULL == budget->grabbing) {
 512                 ret = -ENOMEM;
 513                 goto err_del_i2c;
 514         }
 515
 516         saa7146_write(dev, PCI_BT_V1, 0x001c0000);
 517         /* upload all */
 518         saa7146_write(dev, GPIO_CTRL, 0x000000);
 519
 520         tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
 521
 522         /* frontend power on */
 523         if (bi->type != BUDGET_FS_ACTIVY)
 524                 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 525
 526         if ((ret = budget_register(budget)) == 0)
 527                 return 0; /* Everything OK */
 528
 529         /* An error occurred, cleanup resources */
 530         saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
 531
 532 err_del_i2c:
 533         i2c_del_adapter(&budget->i2c_adap);
 534
 535 err_dvb_unregister:
 536         dvb_unregister_adapter(&budget->dvb_adapter);
 537
 538         return ret;
 539 }
 540
 541 void ttpci_budget_init_hooks(struct budget *budget)
 542 {
 543         if (budget->dvb_frontend && !budget->read_fe_status) {
 544                 budget->read_fe_status = budget->dvb_frontend->ops.read_status;
 545                 budget->dvb_frontend->ops.read_status = budget_read_fe_status;
 546         }
 547 }
 548
 549 int ttpci_budget_deinit(struct budget *budget)
 550 {
 551         struct saa7146_dev *dev = budget->dev;
 552
 553         dprintk(2, "budget: %p\n", budget);
 554
 555         budget_unregister(budget);
 556
 557         tasklet_kill(&budget->vpe_tasklet);
 558
 559         saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
 560
 561         i2c_del_adapter(&budget->i2c_adap);
 562
 563         dvb_unregister_adapter(&budget->dvb_adapter);
 564
 565         return 0;
 566 }
 567
 568 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
 569 {
 570         struct budget *budget = (struct budget *) dev->ext_priv;
 571
 572         dprintk(8, "dev: %p, budget: %p\n", dev, budget);
 573
 574         if (*isr & MASK_10)
 575                 tasklet_schedule(&budget->vpe_tasklet);
 576 }
 577
 578 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
 579 {
 580         struct budget *budget = (struct budget *) dev->ext_priv;
 581
 582         spin_lock(&budget->feedlock);
 583         budget->video_port = video_port;
 584         if (budget->feeding) {
 585                 stop_ts_capture(budget);
 586                 start_ts_capture(budget);
 587         }
 588         spin_unlock(&budget->feedlock);
 589 }
 590
 591 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
 592 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
 593 EXPORT_SYMBOL_GPL(ttpci_budget_init);
 594 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
 595 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
 596 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
 597 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
 598 EXPORT_SYMBOL_GPL(budget_debug);
 599
 600 MODULE_LICENSE("GPL");