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 = 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 = 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 = 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"); 604