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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * budget-core.ko: base-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 EXPORT_SYMBOL_GPL(budget_debug);
  38 static int dma_buffer_size = TS_MIN_BUFSIZE_K;
  39 module_param_named(debug, budget_debug, int, 0644);
  40 module_param_named(bufsize, dma_buffer_size, int, 0444);
  41 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
  42 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
  43
  44 /****************************************************************************
  45  * TT budget / WinTV Nova
  46  ****************************************************************************/
  47
  48 static int stop_ts_capture(struct budget *budget)
  49 {
  50         dprintk(2, "budget: %p\n", budget);
  51
  52         saa7146_write(budget->dev, MC1, MASK_20);       // DMA3 off
  53         SAA7146_IER_DISABLE(budget->dev, MASK_10);
  54         return 0;
  55 }
  56
  57 static int start_ts_capture(struct budget *budget)
  58 {
  59         struct saa7146_dev *dev = budget->dev;
  60
  61         dprintk(2, "budget: %p\n", budget);
  62
  63         if (!budget->feeding || !budget->fe_synced)
  64                 return 0;
  65
  66         saa7146_write(dev, MC1, MASK_20);       // DMA3 off
  67
  68         memset(budget->grabbing, 0x00, budget->buffer_size);
  69
  70         saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
  71
  72         budget->ttbp = 0;
  73
  74         /*
  75          *  Signal path on the Activy:
  76          *
  77          *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
  78          *
  79          *  Since the tuner feeds 204 bytes packets into the SAA7146,
  80          *  DMA3 is configured to strip the trailing 16 FEC bytes:
  81          *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
  82          */
  83
  84         switch (budget->card->type) {
  85         case BUDGET_FS_ACTIVY:
  86                 saa7146_write(dev, DD1_INIT, 0x04000000);
  87                 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
  88                 saa7146_write(dev, BRS_CTRL, 0x00000000);
  89                 break;
  90         case BUDGET_PATCH:
  91                 saa7146_write(dev, DD1_INIT, 0x00000200);
  92                 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
  93                 saa7146_write(dev, BRS_CTRL, 0x60000000);
  94                 break;
  95         case BUDGET_CIN1200C_MK3:
  96         case BUDGET_KNC1C_MK3:
  97         case BUDGET_KNC1C_TDA10024:
  98         case BUDGET_KNC1CP_MK3:
  99                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
 100                         saa7146_write(dev, DD1_INIT, 0x06000200);
 101                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 102                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 103                 } else {
 104                         saa7146_write(dev, DD1_INIT, 0x00000600);
 105                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 106                         saa7146_write(dev, BRS_CTRL, 0x60000000);
 107                 }
 108                 break;
 109         default:
 110                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
 111                         saa7146_write(dev, DD1_INIT, 0x06000200);
 112                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 113                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 114                 } else {
 115                         saa7146_write(dev, DD1_INIT, 0x02000600);
 116                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 117                         saa7146_write(dev, BRS_CTRL, 0x60000000);
 118                 }
 119         }
 120
 121         saa7146_write(dev, MC2, (MASK_08 | MASK_24));
 122         mdelay(10);
 123
 124         saa7146_write(dev, BASE_ODD3, 0);
 125         if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
 126                 // using odd/even buffers
 127                 saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
 128         } else {
 129                 // using a single buffer
 130                 saa7146_write(dev, BASE_EVEN3, 0);
 131         }
 132         saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
 133         saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
 134
 135         saa7146_write(dev, PITCH3, budget->buffer_width);
 136         saa7146_write(dev, NUM_LINE_BYTE3,
 137                         (budget->buffer_height << 16) | budget->buffer_width);
 138
 139         saa7146_write(dev, MC2, (MASK_04 | MASK_20));
 140
 141         SAA7146_ISR_CLEAR(budget->dev, MASK_10);        /* VPE */
 142         SAA7146_IER_ENABLE(budget->dev, MASK_10);       /* VPE */
 143         saa7146_write(dev, MC1, (MASK_04 | MASK_20));   /* DMA3 on */
 144
 145         return 0;
 146 }
 147
 148 static int budget_read_fe_status(struct dvb_frontend *fe,
 149                                  enum fe_status *status)
 150 {
 151         struct budget *budget = fe->dvb->priv;
 152         int synced;
 153         int ret;
 154
 155         if (budget->read_fe_status)
 156                 ret = budget->read_fe_status(fe, status);
 157         else
 158                 ret = -EINVAL;
 159
 160         if (!ret) {
 161                 synced = (*status & FE_HAS_LOCK);
 162                 if (synced != budget->fe_synced) {
 163                         budget->fe_synced = synced;
 164                         spin_lock(&budget->feedlock);
 165                         if (synced)
 166                                 start_ts_capture(budget);
 167                         else
 168                                 stop_ts_capture(budget);
 169                         spin_unlock(&budget->feedlock);
 170                 }
 171         }
 172         return ret;
 173 }
 174
 175 static void vpeirq(struct work_struct *t)
 176 {
 177         struct budget *budget = from_work(budget, t, vpe_bh_work);
 178         u8 *mem = (u8 *) (budget->grabbing);
 179         u32 olddma = budget->ttbp;
 180         u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
 181         u32 count;
 182
 183         /* Ensure streamed PCI data is synced to CPU */
 184         dma_sync_sg_for_cpu(&budget->dev->pci->dev, budget->pt.slist,
 185                             budget->pt.nents, DMA_FROM_DEVICE);
 186
 187         /* nearest lower position divisible by 188 */
 188         newdma -= newdma % 188;
 189
 190         if (newdma >= budget->buffer_size)
 191                 return;
 192
 193         budget->ttbp = newdma;
 194
 195         if (budget->feeding == 0 || newdma == olddma)
 196                 return;
 197
 198         if (newdma > olddma) {  /* no wraparound, dump olddma..newdma */
 199                 count = newdma - olddma;
 200                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 201         } else {                /* wraparound, dump olddma..buflen and 0..newdma */
 202                 count = budget->buffer_size - olddma;
 203                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 204                 count += newdma;
 205                 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
 206         }
 207
 208         if (count > budget->buffer_warning_threshold)
 209                 budget->buffer_warnings++;
 210
 211         if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
 212                 pr_warn("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
 213                         budget->dev->name, __func__, budget->buffer_warnings, count);
 214                 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
 215                 budget->buffer_warnings = 0;
 216         }
 217 }
 218
 219
 220 static int ttpci_budget_debiread_nolock(struct budget *budget, u32 config,
 221                 int addr, int count, int nobusyloop)
 222 {
 223         struct saa7146_dev *saa = budget->dev;
 224         int result;
 225
 226         result = saa7146_wait_for_debi_done(saa, nobusyloop);
 227         if (result < 0)
 228                 return result;
 229
 230         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
 231         saa7146_write(saa, DEBI_CONFIG, config);
 232         saa7146_write(saa, DEBI_PAGE, 0);
 233         saa7146_write(saa, MC2, (2 << 16) | 2);
 234
 235         result = saa7146_wait_for_debi_done(saa, nobusyloop);
 236         if (result < 0)
 237                 return result;
 238
 239         result = saa7146_read(saa, DEBI_AD);
 240         result &= (0xffffffffUL >> ((4 - count) * 8));
 241         return result;
 242 }
 243
 244 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
 245                           int uselocks, int nobusyloop)
 246 {
 247         if (count > 4 || count <= 0)
 248                 return 0;
 249
 250         if (uselocks) {
 251                 unsigned long flags;
 252                 int result;
 253
 254                 spin_lock_irqsave(&budget->debilock, flags);
 255                 result = ttpci_budget_debiread_nolock(budget, config, addr,
 256                                                       count, nobusyloop);
 257                 spin_unlock_irqrestore(&budget->debilock, flags);
 258                 return result;
 259         }
 260         return ttpci_budget_debiread_nolock(budget, config, addr,
 261                                             count, nobusyloop);
 262 }
 263 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
 264
 265 static int ttpci_budget_debiwrite_nolock(struct budget *budget, u32 config,
 266                 int addr, int count, u32 value, int nobusyloop)
 267 {
 268         struct saa7146_dev *saa = budget->dev;
 269         int result;
 270
 271         result = saa7146_wait_for_debi_done(saa, nobusyloop);
 272         if (result < 0)
 273                 return result;
 274
 275         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
 276         saa7146_write(saa, DEBI_CONFIG, config);
 277         saa7146_write(saa, DEBI_PAGE, 0);
 278         saa7146_write(saa, DEBI_AD, value);
 279         saa7146_write(saa, MC2, (2 << 16) | 2);
 280
 281         result = saa7146_wait_for_debi_done(saa, nobusyloop);
 282         return result < 0 ? result : 0;
 283 }
 284
 285 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
 286                            int count, u32 value, int uselocks, int nobusyloop)
 287 {
 288         if (count > 4 || count <= 0)
 289                 return 0;
 290
 291         if (uselocks) {
 292                 unsigned long flags;
 293                 int result;
 294
 295                 spin_lock_irqsave(&budget->debilock, flags);
 296                 result = ttpci_budget_debiwrite_nolock(budget, config, addr,
 297                                                 count, value, nobusyloop);
 298                 spin_unlock_irqrestore(&budget->debilock, flags);
 299                 return result;
 300         }
 301         return ttpci_budget_debiwrite_nolock(budget, config, addr,
 302                                              count, value, nobusyloop);
 303 }
 304 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
 305
 306
 307 /****************************************************************************
 308  * DVB API SECTION
 309  ****************************************************************************/
 310
 311 static int budget_start_feed(struct dvb_demux_feed *feed)
 312 {
 313         struct dvb_demux *demux = feed->demux;
 314         struct budget *budget = demux->priv;
 315         int status = 0;
 316
 317         dprintk(2, "budget: %p\n", budget);
 318
 319         if (!demux->dmx.frontend)
 320                 return -EINVAL;
 321
 322         spin_lock(&budget->feedlock);
 323         feed->pusi_seen = false; /* have a clean section start */
 324         if (budget->feeding++ == 0)
 325                 status = start_ts_capture(budget);
 326         spin_unlock(&budget->feedlock);
 327         return status;
 328 }
 329
 330 static int budget_stop_feed(struct dvb_demux_feed *feed)
 331 {
 332         struct dvb_demux *demux = feed->demux;
 333         struct budget *budget = demux->priv;
 334         int status = 0;
 335
 336         dprintk(2, "budget: %p\n", budget);
 337
 338         spin_lock(&budget->feedlock);
 339         if (--budget->feeding == 0)
 340                 status = stop_ts_capture(budget);
 341         spin_unlock(&budget->feedlock);
 342         return status;
 343 }
 344
 345 static int budget_register(struct budget *budget)
 346 {
 347         struct dvb_demux *dvbdemux = &budget->demux;
 348         int ret;
 349
 350         dprintk(2, "budget: %p\n", budget);
 351
 352         dvbdemux->priv = (void *) budget;
 353
 354         dvbdemux->filternum = 256;
 355         dvbdemux->feednum = 256;
 356         dvbdemux->start_feed = budget_start_feed;
 357         dvbdemux->stop_feed = budget_stop_feed;
 358         dvbdemux->write_to_decoder = NULL;
 359
 360         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 361                                       DMX_MEMORY_BASED_FILTERING);
 362
 363         dvb_dmx_init(&budget->demux);
 364
 365         budget->dmxdev.filternum = 256;
 366         budget->dmxdev.demux = &dvbdemux->dmx;
 367         budget->dmxdev.capabilities = 0;
 368
 369         dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
 370
 371         budget->hw_frontend.source = DMX_FRONTEND_0;
 372
 373         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 374
 375         if (ret < 0)
 376                 goto err_release_dmx;
 377
 378         budget->mem_frontend.source = DMX_MEMORY_FE;
 379         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 380         if (ret < 0)
 381                 goto err_release_dmx;
 382
 383         ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 384         if (ret < 0)
 385                 goto err_release_dmx;
 386
 387         dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
 388
 389         return 0;
 390
 391 err_release_dmx:
 392         dvb_dmxdev_release(&budget->dmxdev);
 393         dvb_dmx_release(&budget->demux);
 394         return ret;
 395 }
 396
 397 static void budget_unregister(struct budget *budget)
 398 {
 399         struct dvb_demux *dvbdemux = &budget->demux;
 400
 401         dprintk(2, "budget: %p\n", budget);
 402
 403         dvb_net_release(&budget->dvb_net);
 404
 405         dvbdemux->dmx.close(&dvbdemux->dmx);
 406         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 407         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 408
 409         dvb_dmxdev_release(&budget->dmxdev);
 410         dvb_dmx_release(&budget->demux);
 411 }
 412
 413 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
 414                       struct saa7146_pci_extension_data *info,
 415                       struct module *owner, short *adapter_nums)
 416 {
 417         int ret = 0;
 418         struct budget_info *bi = info->ext_priv;
 419         int max_bufsize;
 420         int height_mask;
 421
 422         memset(budget, 0, sizeof(struct budget));
 423
 424         dprintk(2, "dev: %p, budget: %p\n", dev, budget);
 425
 426         budget->card = bi;
 427         budget->dev = (struct saa7146_dev *) dev;
 428
 429         switch (budget->card->type) {
 430         case BUDGET_FS_ACTIVY:
 431                 budget->buffer_width = TS_WIDTH_ACTIVY;
 432                 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
 433                 height_mask = TS_HEIGHT_MASK_ACTIVY;
 434                 break;
 435
 436         case BUDGET_KNC1C:
 437         case BUDGET_KNC1CP:
 438         case BUDGET_CIN1200C:
 439         case BUDGET_KNC1C_MK3:
 440         case BUDGET_KNC1C_TDA10024:
 441         case BUDGET_KNC1CP_MK3:
 442         case BUDGET_CIN1200C_MK3:
 443                 budget->buffer_width = TS_WIDTH_DVBC;
 444                 max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
 445                 height_mask = TS_HEIGHT_MASK_DVBC;
 446                 break;
 447
 448         default:
 449                 budget->buffer_width = TS_WIDTH;
 450                 max_bufsize = TS_MAX_BUFSIZE_K;
 451                 height_mask = TS_HEIGHT_MASK;
 452         }
 453
 454         if (dma_buffer_size < TS_MIN_BUFSIZE_K)
 455                 dma_buffer_size = TS_MIN_BUFSIZE_K;
 456         else if (dma_buffer_size > max_bufsize)
 457                 dma_buffer_size = max_bufsize;
 458
 459         budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
 460         if (budget->buffer_height > 0xfff) {
 461                 budget->buffer_height /= 2;
 462                 budget->buffer_height &= height_mask;
 463                 budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
 464         } else {
 465                 budget->buffer_height &= height_mask;
 466                 budget->buffer_size = budget->buffer_height * budget->buffer_width;
 467         }
 468         budget->buffer_warning_threshold = budget->buffer_size * 80/100;
 469         budget->buffer_warnings = 0;
 470         budget->buffer_warning_time = jiffies;
 471
 472         dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
 473                 budget->dev->name,
 474                 budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
 475                 budget->buffer_width, budget->buffer_height);
 476         pr_info("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
 477
 478         ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,
 479                                    owner, &budget->dev->pci->dev, adapter_nums);
 480         if (ret < 0)
 481                 return ret;
 482
 483         /* set dd1 stream a & b */
 484         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 485         saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 486         saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 487         saa7146_write(dev, DD1_INIT, 0x02000000);
 488         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 489
 490         if (bi->type != BUDGET_FS_ACTIVY)
 491                 budget->video_port = BUDGET_VIDEO_PORTB;
 492         else
 493                 budget->video_port = BUDGET_VIDEO_PORTA;
 494         spin_lock_init(&budget->feedlock);
 495         spin_lock_init(&budget->debilock);
 496
 497         /*
 498          * the Siemens DVB needs this if you want to have the i2c chips
 499          * get recognized before the main driver is loaded
 500          */
 501         if (bi->type != BUDGET_FS_ACTIVY)
 502                 saa7146_write(dev, GPIO_CTRL, 0x500000);        /* GPIO 3 = 1 */
 503
 504         strscpy(budget->i2c_adap.name, budget->card->name,
 505                 sizeof(budget->i2c_adap.name));
 506
 507         saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
 508         strscpy(budget->i2c_adap.name, budget->card->name,
 509                 sizeof(budget->i2c_adap.name));
 510
 511         if (i2c_add_adapter(&budget->i2c_adap) < 0) {
 512                 ret = -ENOMEM;
 513                 goto err_dvb_unregister;
 514         }
 515
 516         ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
 517
 518         budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);
 519         if (budget->grabbing == NULL) {
 520                 ret = -ENOMEM;
 521                 goto err_del_i2c;
 522         }
 523
 524         saa7146_write(dev, PCI_BT_V1, 0x001c0000);
 525         /* upload all */
 526         saa7146_write(dev, GPIO_CTRL, 0x000000);
 527
 528         INIT_WORK(&budget->vpe_bh_work, vpeirq);
 529
 530         /* frontend power on */
 531         if (bi->type != BUDGET_FS_ACTIVY)
 532                 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 533
 534         ret = budget_register(budget);
 535         if (ret == 0)
 536                 return 0; /* Everything OK */
 537
 538         /* An error occurred, cleanup resources */
 539         saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
 540
 541 err_del_i2c:
 542         i2c_del_adapter(&budget->i2c_adap);
 543
 544 err_dvb_unregister:
 545         dvb_unregister_adapter(&budget->dvb_adapter);
 546
 547         return ret;
 548 }
 549 EXPORT_SYMBOL_GPL(ttpci_budget_init);
 550
 551 void ttpci_budget_init_hooks(struct budget *budget)
 552 {
 553         if (budget->dvb_frontend && !budget->read_fe_status) {
 554                 budget->read_fe_status = budget->dvb_frontend->ops.read_status;
 555                 budget->dvb_frontend->ops.read_status = budget_read_fe_status;
 556         }
 557 }
 558 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
 559
 560 int ttpci_budget_deinit(struct budget *budget)
 561 {
 562         struct saa7146_dev *dev = budget->dev;
 563
 564         dprintk(2, "budget: %p\n", budget);
 565
 566         budget_unregister(budget);
 567
 568         cancel_work_sync(&budget->vpe_bh_work);
 569
 570         saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
 571
 572         i2c_del_adapter(&budget->i2c_adap);
 573
 574         dvb_unregister_adapter(&budget->dvb_adapter);
 575
 576         return 0;
 577 }
 578 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
 579
 580 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 *isr)
 581 {
 582         struct budget *budget = dev->ext_priv;
 583
 584         dprintk(8, "dev: %p, budget: %p\n", dev, budget);
 585
 586         if (*isr & MASK_10)
 587                 queue_work(system_bh_wq, &budget->vpe_bh_work);
 588 }
 589 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
 590
 591 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
 592 {
 593         struct budget *budget = dev->ext_priv;
 594
 595         spin_lock(&budget->feedlock);
 596         budget->video_port = video_port;
 597         if (budget->feeding) {
 598                 stop_ts_capture(budget);
 599                 start_ts_capture(budget);
 600         }
 601         spin_unlock(&budget->feedlock);
 602 }
 603 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
 604
 605 MODULE_DESCRIPTION("base driver for the SAA7146 based Budget DVB cards");
 606 MODULE_LICENSE("GPL");