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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * budget-core.c: driver for the SAA7146 based Budget DVB cards
   4  *
   5  * Compiled from various sources by Michael Hunold <michael@mihu.de>
   6  *
   7  * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
   8  *
   9  * Copyright (C) 1999-2002 Ralph  Metzler
  10  *                       & Marcus Metzler for convergence integrated media GmbH
  11  *
  12  * 26feb2004 Support for FS Activy Card (Grundig tuner) by
  13  *           Michael Dreher <michael@5dot1.de>,
  14  *           Oliver Endriss <o.endriss@gmx.de>,
  15  *           Andreas 'randy' Weinberger
  16  *
  17  * the project's page is at https://linuxtv.org
  18  */
  19
  20
  21 #include "budget.h"
  22 #include "ttpci-eeprom.h"
  23
  24 #define TS_WIDTH                (2 * TS_SIZE)
  25 #define TS_WIDTH_ACTIVY         TS_SIZE
  26 #define TS_WIDTH_DVBC           TS_SIZE
  27 #define TS_HEIGHT_MASK          0xf00
  28 #define TS_HEIGHT_MASK_ACTIVY   0xc00
  29 #define TS_HEIGHT_MASK_DVBC     0xe00
  30 #define TS_MIN_BUFSIZE_K        188
  31 #define TS_MAX_BUFSIZE_K        1410
  32 #define TS_MAX_BUFSIZE_K_ACTIVY 564
  33 #define TS_MAX_BUFSIZE_K_DVBC   1316
  34 #define BUFFER_WARNING_WAIT     (30*HZ)
  35
  36 int budget_debug;
  37 static int dma_buffer_size = TS_MIN_BUFSIZE_K;
  38 module_param_named(debug, budget_debug, int, 0644);
  39 module_param_named(bufsize, dma_buffer_size, int, 0444);
  40 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
  41 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
  42
  43 /****************************************************************************
  44  * TT budget / WinTV Nova
  45  ****************************************************************************/
  46
  47 static int stop_ts_capture(struct budget *budget)
  48 {
  49         dprintk(2, "budget: %p\n", budget);
  50
  51         saa7146_write(budget->dev, MC1, MASK_20);       // DMA3 off
  52         SAA7146_IER_DISABLE(budget->dev, MASK_10);
  53         return 0;
  54 }
  55
  56 static int start_ts_capture(struct budget *budget)
  57 {
  58         struct saa7146_dev *dev = budget->dev;
  59
  60         dprintk(2, "budget: %p\n", budget);
  61
  62         if (!budget->feeding || !budget->fe_synced)
  63                 return 0;
  64
  65         saa7146_write(dev, MC1, MASK_20);       // DMA3 off
  66
  67         memset(budget->grabbing, 0x00, budget->buffer_size);
  68
  69         saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
  70
  71         budget->ttbp = 0;
  72
  73         /*
  74          *  Signal path on the Activy:
  75          *
  76          *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
  77          *
  78          *  Since the tuner feeds 204 bytes packets into the SAA7146,
  79          *  DMA3 is configured to strip the trailing 16 FEC bytes:
  80          *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
  81          */
  82
  83         switch(budget->card->type) {
  84         case BUDGET_FS_ACTIVY:
  85                 saa7146_write(dev, DD1_INIT, 0x04000000);
  86                 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
  87                 saa7146_write(dev, BRS_CTRL, 0x00000000);
  88                 break;
  89         case BUDGET_PATCH:
  90                 saa7146_write(dev, DD1_INIT, 0x00000200);
  91                 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
  92                 saa7146_write(dev, BRS_CTRL, 0x60000000);
  93                 break;
  94         case BUDGET_CIN1200C_MK3:
  95         case BUDGET_KNC1C_MK3:
  96         case BUDGET_KNC1C_TDA10024:
  97         case BUDGET_KNC1CP_MK3:
  98                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
  99                         saa7146_write(dev, DD1_INIT, 0x06000200);
 100                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 101                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 102                 } else {
 103                         saa7146_write(dev, DD1_INIT, 0x00000600);
 104                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 105                         saa7146_write(dev, BRS_CTRL, 0x60000000);
 106                 }
 107                 break;
 108         default:
 109                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
 110                         saa7146_write(dev, DD1_INIT, 0x06000200);
 111                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 112                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 113                 } else {
 114                         saa7146_write(dev, DD1_INIT, 0x02000600);
 115                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 116                         saa7146_write(dev, BRS_CTRL, 0x60000000);
 117                 }
 118         }
 119
 120         saa7146_write(dev, MC2, (MASK_08 | MASK_24));
 121         mdelay(10);
 122
 123         saa7146_write(dev, BASE_ODD3, 0);
 124         if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
 125                 // using odd/even buffers
 126                 saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
 127         } else {
 128                 // using a single buffer
 129                 saa7146_write(dev, BASE_EVEN3, 0);
 130         }
 131         saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
 132         saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
 133
 134         saa7146_write(dev, PITCH3, budget->buffer_width);
 135         saa7146_write(dev, NUM_LINE_BYTE3,
 136                         (budget->buffer_height << 16) | budget->buffer_width);
 137
 138         saa7146_write(dev, MC2, (MASK_04 | MASK_20));
 139
 140         SAA7146_ISR_CLEAR(budget->dev, MASK_10);        /* VPE */
 141         SAA7146_IER_ENABLE(budget->dev, MASK_10);       /* VPE */
 142         saa7146_write(dev, MC1, (MASK_04 | MASK_20));   /* DMA3 on */
 143
 144         return 0;
 145 }
 146
 147 static int budget_read_fe_status(struct dvb_frontend *fe,
 148                                  enum fe_status *status)
 149 {
 150         struct budget *budget = (struct budget *) fe->dvb->priv;
 151         int synced;
 152         int ret;
 153
 154         if (budget->read_fe_status)
 155                 ret = budget->read_fe_status(fe, status);
 156         else
 157                 ret = -EINVAL;
 158
 159         if (!ret) {
 160                 synced = (*status & FE_HAS_LOCK);
 161                 if (synced != budget->fe_synced) {
 162                         budget->fe_synced = synced;
 163                         spin_lock(&budget->feedlock);
 164                         if (synced)
 165                                 start_ts_capture(budget);
 166                         else
 167                                 stop_ts_capture(budget);
 168                         spin_unlock(&budget->feedlock);
 169                 }
 170         }
 171         return ret;
 172 }
 173
 174 static void vpeirq(struct tasklet_struct *t)
 175 {
 176         struct budget *budget = from_tasklet(budget, t, vpe_tasklet);
 177         u8 *mem = (u8 *) (budget->grabbing);
 178         u32 olddma = budget->ttbp;
 179         u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
 180         u32 count;
 181
 182         /* Ensure streamed PCI data is synced to CPU */
 183         dma_sync_sg_for_cpu(&budget->dev->pci->dev, budget->pt.slist,
 184                             budget->pt.nents, DMA_FROM_DEVICE);
 185
 186         /* nearest lower position divisible by 188 */
 187         newdma -= newdma % 188;
 188
 189         if (newdma >= budget->buffer_size)
 190                 return;
 191
 192         budget->ttbp = newdma;
 193
 194         if (budget->feeding == 0 || newdma == olddma)
 195                 return;
 196
 197         if (newdma > olddma) {  /* no wraparound, dump olddma..newdma */
 198                 count = newdma - olddma;
 199                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 200         } else {                /* wraparound, dump olddma..buflen and 0..newdma */
 201                 count = budget->buffer_size - olddma;
 202                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 203                 count += newdma;
 204                 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
 205         }
 206
 207         if (count > budget->buffer_warning_threshold)
 208                 budget->buffer_warnings++;
 209
 210         if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
 211                 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
 212                         budget->dev->name, __func__, budget->buffer_warnings, count);
 213                 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
 214                 budget->buffer_warnings = 0;
 215         }
 216 }
 217
 218
 219 static int ttpci_budget_debiread_nolock(struct budget *budget, u32 config,
 220                 int addr, int count, int nobusyloop)
 221 {
 222         struct saa7146_dev *saa = budget->dev;
 223         int result;
 224
 225         result = saa7146_wait_for_debi_done(saa, nobusyloop);
 226         if (result < 0)
 227                 return result;
 228
 229         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
 230         saa7146_write(saa, DEBI_CONFIG, config);
 231         saa7146_write(saa, DEBI_PAGE, 0);
 232         saa7146_write(saa, MC2, (2 << 16) | 2);
 233
 234         result = saa7146_wait_for_debi_done(saa, nobusyloop);
 235         if (result < 0)
 236                 return result;
 237
 238         result = saa7146_read(saa, DEBI_AD);
 239         result &= (0xffffffffUL >> ((4 - count) * 8));
 240         return result;
 241 }
 242
 243 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
 244                           int uselocks, int nobusyloop)
 245 {
 246         if (count > 4 || count <= 0)
 247                 return 0;
 248
 249         if (uselocks) {
 250                 unsigned long flags;
 251                 int result;
 252
 253                 spin_lock_irqsave(&budget->debilock, flags);
 254                 result = ttpci_budget_debiread_nolock(budget, config, addr,
 255                                                       count, nobusyloop);
 256                 spin_unlock_irqrestore(&budget->debilock, flags);
 257                 return result;
 258         }
 259         return ttpci_budget_debiread_nolock(budget, config, addr,
 260                                             count, nobusyloop);
 261 }
 262
 263 static int ttpci_budget_debiwrite_nolock(struct budget *budget, u32 config,
 264                 int addr, int count, u32 value, int nobusyloop)
 265 {
 266         struct saa7146_dev *saa = budget->dev;
 267         int result;
 268
 269         result = saa7146_wait_for_debi_done(saa, nobusyloop);
 270         if (result < 0)
 271                 return result;
 272
 273         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
 274         saa7146_write(saa, DEBI_CONFIG, config);
 275         saa7146_write(saa, DEBI_PAGE, 0);
 276         saa7146_write(saa, DEBI_AD, value);
 277         saa7146_write(saa, MC2, (2 << 16) | 2);
 278
 279         result = saa7146_wait_for_debi_done(saa, nobusyloop);
 280         return result < 0 ? result : 0;
 281 }
 282
 283 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
 284                            int count, u32 value, int uselocks, int nobusyloop)
 285 {
 286         if (count > 4 || count <= 0)
 287                 return 0;
 288
 289         if (uselocks) {
 290                 unsigned long flags;
 291                 int result;
 292
 293                 spin_lock_irqsave(&budget->debilock, flags);
 294                 result = ttpci_budget_debiwrite_nolock(budget, config, addr,
 295                                                 count, value, nobusyloop);
 296                 spin_unlock_irqrestore(&budget->debilock, flags);
 297                 return result;
 298         }
 299         return ttpci_budget_debiwrite_nolock(budget, config, addr,
 300                                              count, value, nobusyloop);
 301 }
 302
 303
 304 /****************************************************************************
 305  * DVB API SECTION
 306  ****************************************************************************/
 307
 308 static int budget_start_feed(struct dvb_demux_feed *feed)
 309 {
 310         struct dvb_demux *demux = feed->demux;
 311         struct budget *budget = demux->priv;
 312         int status = 0;
 313
 314         dprintk(2, "budget: %p\n", budget);
 315
 316         if (!demux->dmx.frontend)
 317                 return -EINVAL;
 318
 319         spin_lock(&budget->feedlock);
 320         feed->pusi_seen = false; /* have a clean section start */
 321         if (budget->feeding++ == 0)
 322                 status = start_ts_capture(budget);
 323         spin_unlock(&budget->feedlock);
 324         return status;
 325 }
 326
 327 static int budget_stop_feed(struct dvb_demux_feed *feed)
 328 {
 329         struct dvb_demux *demux = feed->demux;
 330         struct budget *budget = demux->priv;
 331         int status = 0;
 332
 333         dprintk(2, "budget: %p\n", budget);
 334
 335         spin_lock(&budget->feedlock);
 336         if (--budget->feeding == 0)
 337                 status = stop_ts_capture(budget);
 338         spin_unlock(&budget->feedlock);
 339         return status;
 340 }
 341
 342 static int budget_register(struct budget *budget)
 343 {
 344         struct dvb_demux *dvbdemux = &budget->demux;
 345         int ret;
 346
 347         dprintk(2, "budget: %p\n", budget);
 348
 349         dvbdemux->priv = (void *) budget;
 350
 351         dvbdemux->filternum = 256;
 352         dvbdemux->feednum = 256;
 353         dvbdemux->start_feed = budget_start_feed;
 354         dvbdemux->stop_feed = budget_stop_feed;
 355         dvbdemux->write_to_decoder = NULL;
 356
 357         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 358                                       DMX_MEMORY_BASED_FILTERING);
 359
 360         dvb_dmx_init(&budget->demux);
 361
 362         budget->dmxdev.filternum = 256;
 363         budget->dmxdev.demux = &dvbdemux->dmx;
 364         budget->dmxdev.capabilities = 0;
 365
 366         dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
 367
 368         budget->hw_frontend.source = DMX_FRONTEND_0;
 369
 370         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 371
 372         if (ret < 0)
 373                 goto err_release_dmx;
 374
 375         budget->mem_frontend.source = DMX_MEMORY_FE;
 376         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 377         if (ret < 0)
 378                 goto err_release_dmx;
 379
 380         ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 381         if (ret < 0)
 382                 goto err_release_dmx;
 383
 384         dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
 385
 386         return 0;
 387
 388 err_release_dmx:
 389         dvb_dmxdev_release(&budget->dmxdev);
 390         dvb_dmx_release(&budget->demux);
 391         return ret;
 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_KNC1C_TDA10024:
 438         case BUDGET_KNC1CP_MK3:
 439         case BUDGET_CIN1200C_MK3:
 440                 budget->buffer_width = TS_WIDTH_DVBC;
 441                 max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
 442                 height_mask = TS_HEIGHT_MASK_DVBC;
 443                 break;
 444
 445         default:
 446                 budget->buffer_width = TS_WIDTH;
 447                 max_bufsize = TS_MAX_BUFSIZE_K;
 448                 height_mask = TS_HEIGHT_MASK;
 449         }
 450
 451         if (dma_buffer_size < TS_MIN_BUFSIZE_K)
 452                 dma_buffer_size = TS_MIN_BUFSIZE_K;
 453         else if (dma_buffer_size > max_bufsize)
 454                 dma_buffer_size = max_bufsize;
 455
 456         budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
 457         if (budget->buffer_height > 0xfff) {
 458                 budget->buffer_height /= 2;
 459                 budget->buffer_height &= height_mask;
 460                 budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
 461         } else {
 462                 budget->buffer_height &= height_mask;
 463                 budget->buffer_size = budget->buffer_height * budget->buffer_width;
 464         }
 465         budget->buffer_warning_threshold = budget->buffer_size * 80/100;
 466         budget->buffer_warnings = 0;
 467         budget->buffer_warning_time = jiffies;
 468
 469         dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
 470                 budget->dev->name,
 471                 budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
 472                 budget->buffer_width, budget->buffer_height);
 473         printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
 474
 475         ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,
 476                                    owner, &budget->dev->pci->dev, adapter_nums);
 477         if (ret < 0)
 478                 return ret;
 479
 480         /* set dd1 stream a & b */
 481         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 482         saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 483         saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 484         saa7146_write(dev, DD1_INIT, 0x02000000);
 485         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 486
 487         if (bi->type != BUDGET_FS_ACTIVY)
 488                 budget->video_port = BUDGET_VIDEO_PORTB;
 489         else
 490                 budget->video_port = BUDGET_VIDEO_PORTA;
 491         spin_lock_init(&budget->feedlock);
 492         spin_lock_init(&budget->debilock);
 493
 494         /* the Siemens DVB needs this if you want to have the i2c chips
 495            get recognized before the main driver is loaded */
 496         if (bi->type != BUDGET_FS_ACTIVY)
 497                 saa7146_write(dev, GPIO_CTRL, 0x500000);        /* GPIO 3 = 1 */
 498
 499         strscpy(budget->i2c_adap.name, budget->card->name,
 500                 sizeof(budget->i2c_adap.name));
 501
 502         saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
 503         strscpy(budget->i2c_adap.name, budget->card->name,
 504                 sizeof(budget->i2c_adap.name));
 505
 506         if (i2c_add_adapter(&budget->i2c_adap) < 0) {
 507                 ret = -ENOMEM;
 508                 goto err_dvb_unregister;
 509         }
 510
 511         ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
 512
 513         budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);
 514         if (NULL == budget->grabbing) {
 515                 ret = -ENOMEM;
 516                 goto err_del_i2c;
 517         }
 518
 519         saa7146_write(dev, PCI_BT_V1, 0x001c0000);
 520         /* upload all */
 521         saa7146_write(dev, GPIO_CTRL, 0x000000);
 522
 523         tasklet_setup(&budget->vpe_tasklet, vpeirq);
 524
 525         /* frontend power on */
 526         if (bi->type != BUDGET_FS_ACTIVY)
 527                 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 528
 529         if ((ret = budget_register(budget)) == 0)
 530                 return 0; /* Everything OK */
 531
 532         /* An error occurred, cleanup resources */
 533         saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
 534
 535 err_del_i2c:
 536         i2c_del_adapter(&budget->i2c_adap);
 537
 538 err_dvb_unregister:
 539         dvb_unregister_adapter(&budget->dvb_adapter);
 540
 541         return ret;
 542 }
 543
 544 void ttpci_budget_init_hooks(struct budget *budget)
 545 {
 546         if (budget->dvb_frontend && !budget->read_fe_status) {
 547                 budget->read_fe_status = budget->dvb_frontend->ops.read_status;
 548                 budget->dvb_frontend->ops.read_status = budget_read_fe_status;
 549         }
 550 }
 551
 552 int ttpci_budget_deinit(struct budget *budget)
 553 {
 554         struct saa7146_dev *dev = budget->dev;
 555
 556         dprintk(2, "budget: %p\n", budget);
 557
 558         budget_unregister(budget);
 559
 560         tasklet_kill(&budget->vpe_tasklet);
 561
 562         saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
 563
 564         i2c_del_adapter(&budget->i2c_adap);
 565
 566         dvb_unregister_adapter(&budget->dvb_adapter);
 567
 568         return 0;
 569 }
 570
 571 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
 572 {
 573         struct budget *budget = (struct budget *) dev->ext_priv;
 574
 575         dprintk(8, "dev: %p, budget: %p\n", dev, budget);
 576
 577         if (*isr & MASK_10)
 578                 tasklet_schedule(&budget->vpe_tasklet);
 579 }
 580
 581 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
 582 {
 583         struct budget *budget = (struct budget *) dev->ext_priv;
 584
 585         spin_lock(&budget->feedlock);
 586         budget->video_port = video_port;
 587         if (budget->feeding) {
 588                 stop_ts_capture(budget);
 589                 start_ts_capture(budget);
 590         }
 591         spin_unlock(&budget->feedlock);
 592 }
 593
 594 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
 595 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
 596 EXPORT_SYMBOL_GPL(ttpci_budget_init);
 597 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
 598 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
 599 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
 600 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
 601 EXPORT_SYMBOL_GPL(budget_debug);
 602
 603 MODULE_LICENSE("GPL");