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(unsigned long data) 175 { 176 struct budget *budget = (struct budget *) data; 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 pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE); 184 185 /* nearest lower position divisible by 188 */ 186 newdma -= newdma % 188; 187 188 if (newdma >= budget->buffer_size) 189 return; 190 191 budget->ttbp = newdma; 192 193 if (budget->feeding == 0 || newdma == olddma) 194 return; 195 196 if (newdma > olddma) { /* no wraparound, dump olddma..newdma */ 197 count = newdma - olddma; 198 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188); 199 } else { /* wraparound, dump olddma..buflen and 0..newdma */ 200 count = budget->buffer_size - olddma; 201 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188); 202 count += newdma; 203 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188); 204 } 205 206 if (count > budget->buffer_warning_threshold) 207 budget->buffer_warnings++; 208 209 if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) { 210 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n", 211 budget->dev->name, __func__, budget->buffer_warnings, count); 212 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT; 213 budget->buffer_warnings = 0; 214 } 215 } 216 217 218 static int ttpci_budget_debiread_nolock(struct budget *budget, u32 config, 219 int addr, int count, int nobusyloop) 220 { 221 struct saa7146_dev *saa = budget->dev; 222 int result; 223 224 result = saa7146_wait_for_debi_done(saa, nobusyloop); 225 if (result < 0) 226 return result; 227 228 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff)); 229 saa7146_write(saa, DEBI_CONFIG, config); 230 saa7146_write(saa, DEBI_PAGE, 0); 231 saa7146_write(saa, MC2, (2 << 16) | 2); 232 233 result = saa7146_wait_for_debi_done(saa, nobusyloop); 234 if (result < 0) 235 return result; 236 237 result = saa7146_read(saa, DEBI_AD); 238 result &= (0xffffffffUL >> ((4 - count) * 8)); 239 return result; 240 } 241 242 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count, 243 int uselocks, int nobusyloop) 244 { 245 if (count > 4 || count <= 0) 246 return 0; 247 248 if (uselocks) { 249 unsigned long flags; 250 int result; 251 252 spin_lock_irqsave(&budget->debilock, flags); 253 result = ttpci_budget_debiread_nolock(budget, config, addr, 254 count, nobusyloop); 255 spin_unlock_irqrestore(&budget->debilock, flags); 256 return result; 257 } 258 return ttpci_budget_debiread_nolock(budget, config, addr, 259 count, nobusyloop); 260 } 261 262 static int ttpci_budget_debiwrite_nolock(struct budget *budget, u32 config, 263 int addr, int count, u32 value, int nobusyloop) 264 { 265 struct saa7146_dev *saa = budget->dev; 266 int result; 267 268 result = saa7146_wait_for_debi_done(saa, nobusyloop); 269 if (result < 0) 270 return result; 271 272 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff)); 273 saa7146_write(saa, DEBI_CONFIG, config); 274 saa7146_write(saa, DEBI_PAGE, 0); 275 saa7146_write(saa, DEBI_AD, value); 276 saa7146_write(saa, MC2, (2 << 16) | 2); 277 278 result = saa7146_wait_for_debi_done(saa, nobusyloop); 279 return result < 0 ? result : 0; 280 } 281 282 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr, 283 int count, u32 value, int uselocks, int nobusyloop) 284 { 285 if (count > 4 || count <= 0) 286 return 0; 287 288 if (uselocks) { 289 unsigned long flags; 290 int result; 291 292 spin_lock_irqsave(&budget->debilock, flags); 293 result = ttpci_budget_debiwrite_nolock(budget, config, addr, 294 count, value, nobusyloop); 295 spin_unlock_irqrestore(&budget->debilock, flags); 296 return result; 297 } 298 return ttpci_budget_debiwrite_nolock(budget, config, addr, 299 count, value, nobusyloop); 300 } 301 302 303 /**************************************************************************** 304 * DVB API SECTION 305 ****************************************************************************/ 306 307 static int budget_start_feed(struct dvb_demux_feed *feed) 308 { 309 struct dvb_demux *demux = feed->demux; 310 struct budget *budget = (struct budget *) demux->priv; 311 int status = 0; 312 313 dprintk(2, "budget: %p\n", budget); 314 315 if (!demux->dmx.frontend) 316 return -EINVAL; 317 318 spin_lock(&budget->feedlock); 319 feed->pusi_seen = false; /* have a clean section start */ 320 if (budget->feeding++ == 0) 321 status = start_ts_capture(budget); 322 spin_unlock(&budget->feedlock); 323 return status; 324 } 325 326 static int budget_stop_feed(struct dvb_demux_feed *feed) 327 { 328 struct dvb_demux *demux = feed->demux; 329 struct budget *budget = (struct budget *) demux->priv; 330 int status = 0; 331 332 dprintk(2, "budget: %p\n", budget); 333 334 spin_lock(&budget->feedlock); 335 if (--budget->feeding == 0) 336 status = stop_ts_capture(budget); 337 spin_unlock(&budget->feedlock); 338 return status; 339 } 340 341 static int budget_register(struct budget *budget) 342 { 343 struct dvb_demux *dvbdemux = &budget->demux; 344 int ret; 345 346 dprintk(2, "budget: %p\n", budget); 347 348 dvbdemux->priv = (void *) budget; 349 350 dvbdemux->filternum = 256; 351 dvbdemux->feednum = 256; 352 dvbdemux->start_feed = budget_start_feed; 353 dvbdemux->stop_feed = budget_stop_feed; 354 dvbdemux->write_to_decoder = NULL; 355 356 dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | 357 DMX_MEMORY_BASED_FILTERING); 358 359 dvb_dmx_init(&budget->demux); 360 361 budget->dmxdev.filternum = 256; 362 budget->dmxdev.demux = &dvbdemux->dmx; 363 budget->dmxdev.capabilities = 0; 364 365 dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter); 366 367 budget->hw_frontend.source = DMX_FRONTEND_0; 368 369 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend); 370 371 if (ret < 0) 372 return ret; 373 374 budget->mem_frontend.source = DMX_MEMORY_FE; 375 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend); 376 if (ret < 0) 377 return ret; 378 379 ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend); 380 if (ret < 0) 381 return ret; 382 383 dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx); 384 385 return 0; 386 } 387 388 static void budget_unregister(struct budget *budget) 389 { 390 struct dvb_demux *dvbdemux = &budget->demux; 391 392 dprintk(2, "budget: %p\n", budget); 393 394 dvb_net_release(&budget->dvb_net); 395 396 dvbdemux->dmx.close(&dvbdemux->dmx); 397 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend); 398 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend); 399 400 dvb_dmxdev_release(&budget->dmxdev); 401 dvb_dmx_release(&budget->demux); 402 } 403 404 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev, 405 struct saa7146_pci_extension_data *info, 406 struct module *owner, short *adapter_nums) 407 { 408 int ret = 0; 409 struct budget_info *bi = info->ext_priv; 410 int max_bufsize; 411 int height_mask; 412 413 memset(budget, 0, sizeof(struct budget)); 414 415 dprintk(2, "dev: %p, budget: %p\n", dev, budget); 416 417 budget->card = bi; 418 budget->dev = (struct saa7146_dev *) dev; 419 420 switch(budget->card->type) { 421 case BUDGET_FS_ACTIVY: 422 budget->buffer_width = TS_WIDTH_ACTIVY; 423 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY; 424 height_mask = TS_HEIGHT_MASK_ACTIVY; 425 break; 426 427 case BUDGET_KNC1C: 428 case BUDGET_KNC1CP: 429 case BUDGET_CIN1200C: 430 case BUDGET_KNC1C_MK3: 431 case BUDGET_KNC1C_TDA10024: 432 case BUDGET_KNC1CP_MK3: 433 case BUDGET_CIN1200C_MK3: 434 budget->buffer_width = TS_WIDTH_DVBC; 435 max_bufsize = TS_MAX_BUFSIZE_K_DVBC; 436 height_mask = TS_HEIGHT_MASK_DVBC; 437 break; 438 439 default: 440 budget->buffer_width = TS_WIDTH; 441 max_bufsize = TS_MAX_BUFSIZE_K; 442 height_mask = TS_HEIGHT_MASK; 443 } 444 445 if (dma_buffer_size < TS_MIN_BUFSIZE_K) 446 dma_buffer_size = TS_MIN_BUFSIZE_K; 447 else if (dma_buffer_size > max_bufsize) 448 dma_buffer_size = max_bufsize; 449 450 budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width; 451 if (budget->buffer_height > 0xfff) { 452 budget->buffer_height /= 2; 453 budget->buffer_height &= height_mask; 454 budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width; 455 } else { 456 budget->buffer_height &= height_mask; 457 budget->buffer_size = budget->buffer_height * budget->buffer_width; 458 } 459 budget->buffer_warning_threshold = budget->buffer_size * 80/100; 460 budget->buffer_warnings = 0; 461 budget->buffer_warning_time = jiffies; 462 463 dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n", 464 budget->dev->name, 465 budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single", 466 budget->buffer_width, budget->buffer_height); 467 printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size); 468 469 ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, 470 owner, &budget->dev->pci->dev, adapter_nums); 471 if (ret < 0) 472 return ret; 473 474 /* set dd1 stream a & b */ 475 saa7146_write(dev, DD1_STREAM_B, 0x00000000); 476 saa7146_write(dev, MC2, (MASK_09 | MASK_25)); 477 saa7146_write(dev, MC2, (MASK_10 | MASK_26)); 478 saa7146_write(dev, DD1_INIT, 0x02000000); 479 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 480 481 if (bi->type != BUDGET_FS_ACTIVY) 482 budget->video_port = BUDGET_VIDEO_PORTB; 483 else 484 budget->video_port = BUDGET_VIDEO_PORTA; 485 spin_lock_init(&budget->feedlock); 486 spin_lock_init(&budget->debilock); 487 488 /* the Siemens DVB needs this if you want to have the i2c chips 489 get recognized before the main driver is loaded */ 490 if (bi->type != BUDGET_FS_ACTIVY) 491 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */ 492 493 strscpy(budget->i2c_adap.name, budget->card->name, 494 sizeof(budget->i2c_adap.name)); 495 496 saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120); 497 strscpy(budget->i2c_adap.name, budget->card->name, 498 sizeof(budget->i2c_adap.name)); 499 500 if (i2c_add_adapter(&budget->i2c_adap) < 0) { 501 ret = -ENOMEM; 502 goto err_dvb_unregister; 503 } 504 505 ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac); 506 507 budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt); 508 if (NULL == budget->grabbing) { 509 ret = -ENOMEM; 510 goto err_del_i2c; 511 } 512 513 saa7146_write(dev, PCI_BT_V1, 0x001c0000); 514 /* upload all */ 515 saa7146_write(dev, GPIO_CTRL, 0x000000); 516 517 tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget); 518 519 /* frontend power on */ 520 if (bi->type != BUDGET_FS_ACTIVY) 521 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI); 522 523 if ((ret = budget_register(budget)) == 0) 524 return 0; /* Everything OK */ 525 526 /* An error occurred, cleanup resources */ 527 saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt); 528 529 err_del_i2c: 530 i2c_del_adapter(&budget->i2c_adap); 531 532 err_dvb_unregister: 533 dvb_unregister_adapter(&budget->dvb_adapter); 534 535 return ret; 536 } 537 538 void ttpci_budget_init_hooks(struct budget *budget) 539 { 540 if (budget->dvb_frontend && !budget->read_fe_status) { 541 budget->read_fe_status = budget->dvb_frontend->ops.read_status; 542 budget->dvb_frontend->ops.read_status = budget_read_fe_status; 543 } 544 } 545 546 int ttpci_budget_deinit(struct budget *budget) 547 { 548 struct saa7146_dev *dev = budget->dev; 549 550 dprintk(2, "budget: %p\n", budget); 551 552 budget_unregister(budget); 553 554 tasklet_kill(&budget->vpe_tasklet); 555 556 saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt); 557 558 i2c_del_adapter(&budget->i2c_adap); 559 560 dvb_unregister_adapter(&budget->dvb_adapter); 561 562 return 0; 563 } 564 565 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr) 566 { 567 struct budget *budget = (struct budget *) dev->ext_priv; 568 569 dprintk(8, "dev: %p, budget: %p\n", dev, budget); 570 571 if (*isr & MASK_10) 572 tasklet_schedule(&budget->vpe_tasklet); 573 } 574 575 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port) 576 { 577 struct budget *budget = (struct budget *) dev->ext_priv; 578 579 spin_lock(&budget->feedlock); 580 budget->video_port = video_port; 581 if (budget->feeding) { 582 stop_ts_capture(budget); 583 start_ts_capture(budget); 584 } 585 spin_unlock(&budget->feedlock); 586 } 587 588 EXPORT_SYMBOL_GPL(ttpci_budget_debiread); 589 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite); 590 EXPORT_SYMBOL_GPL(ttpci_budget_init); 591 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks); 592 EXPORT_SYMBOL_GPL(ttpci_budget_deinit); 593 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler); 594 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port); 595 EXPORT_SYMBOL_GPL(budget_debug); 596 597 MODULE_LICENSE("GPL"); 598