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 * To obtain the license, point your browser to 28 * http://www.gnu.org/copyleft/gpl.html 29 * 30 * 31 * the project's page is at https://linuxtv.org 32 */ 33 34 35 #include "budget.h" 36 #include "ttpci-eeprom.h" 37 38 #define TS_WIDTH (2 * TS_SIZE) 39 #define TS_WIDTH_ACTIVY TS_SIZE 40 #define TS_WIDTH_DVBC TS_SIZE 41 #define TS_HEIGHT_MASK 0xf00 42 #define TS_HEIGHT_MASK_ACTIVY 0xc00 43 #define TS_HEIGHT_MASK_DVBC 0xe00 44 #define TS_MIN_BUFSIZE_K 188 45 #define TS_MAX_BUFSIZE_K 1410 46 #define TS_MAX_BUFSIZE_K_ACTIVY 564 47 #define TS_MAX_BUFSIZE_K_DVBC 1316 48 #define BUFFER_WARNING_WAIT (30*HZ) 49 50 int budget_debug; 51 static int dma_buffer_size = TS_MIN_BUFSIZE_K; 52 module_param_named(debug, budget_debug, int, 0644); 53 module_param_named(bufsize, dma_buffer_size, int, 0444); 54 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off)."); 55 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)"); 56 57 /**************************************************************************** 58 * TT budget / WinTV Nova 59 ****************************************************************************/ 60 61 static int stop_ts_capture(struct budget *budget) 62 { 63 dprintk(2, "budget: %p\n", budget); 64 65 saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off 66 SAA7146_IER_DISABLE(budget->dev, MASK_10); 67 return 0; 68 } 69 70 static int start_ts_capture(struct budget *budget) 71 { 72 struct saa7146_dev *dev = budget->dev; 73 74 dprintk(2, "budget: %p\n", budget); 75 76 if (!budget->feeding || !budget->fe_synced) 77 return 0; 78 79 saa7146_write(dev, MC1, MASK_20); // DMA3 off 80 81 memset(budget->grabbing, 0x00, budget->buffer_size); 82 83 saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000)); 84 85 budget->ttbp = 0; 86 87 /* 88 * Signal path on the Activy: 89 * 90 * tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory 91 * 92 * Since the tuner feeds 204 bytes packets into the SAA7146, 93 * DMA3 is configured to strip the trailing 16 FEC bytes: 94 * Pitch: 188, NumBytes3: 188, NumLines3: 1024 95 */ 96 97 switch(budget->card->type) { 98 case BUDGET_FS_ACTIVY: 99 saa7146_write(dev, DD1_INIT, 0x04000000); 100 saa7146_write(dev, MC2, (MASK_09 | MASK_25)); 101 saa7146_write(dev, BRS_CTRL, 0x00000000); 102 break; 103 case BUDGET_PATCH: 104 saa7146_write(dev, DD1_INIT, 0x00000200); 105 saa7146_write(dev, MC2, (MASK_10 | MASK_26)); 106 saa7146_write(dev, BRS_CTRL, 0x60000000); 107 break; 108 case BUDGET_CIN1200C_MK3: 109 case BUDGET_KNC1C_MK3: 110 case BUDGET_KNC1C_TDA10024: 111 case BUDGET_KNC1CP_MK3: 112 if (budget->video_port == BUDGET_VIDEO_PORTA) { 113 saa7146_write(dev, DD1_INIT, 0x06000200); 114 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 115 saa7146_write(dev, BRS_CTRL, 0x00000000); 116 } else { 117 saa7146_write(dev, DD1_INIT, 0x00000600); 118 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 119 saa7146_write(dev, BRS_CTRL, 0x60000000); 120 } 121 break; 122 default: 123 if (budget->video_port == BUDGET_VIDEO_PORTA) { 124 saa7146_write(dev, DD1_INIT, 0x06000200); 125 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 126 saa7146_write(dev, BRS_CTRL, 0x00000000); 127 } else { 128 saa7146_write(dev, DD1_INIT, 0x02000600); 129 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 130 saa7146_write(dev, BRS_CTRL, 0x60000000); 131 } 132 } 133 134 saa7146_write(dev, MC2, (MASK_08 | MASK_24)); 135 mdelay(10); 136 137 saa7146_write(dev, BASE_ODD3, 0); 138 if (budget->buffer_size > budget->buffer_height * budget->buffer_width) { 139 // using odd/even buffers 140 saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width); 141 } else { 142 // using a single buffer 143 saa7146_write(dev, BASE_EVEN3, 0); 144 } 145 saa7146_write(dev, PROT_ADDR3, budget->buffer_size); 146 saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90); 147 148 saa7146_write(dev, PITCH3, budget->buffer_width); 149 saa7146_write(dev, NUM_LINE_BYTE3, 150 (budget->buffer_height << 16) | budget->buffer_width); 151 152 saa7146_write(dev, MC2, (MASK_04 | MASK_20)); 153 154 SAA7146_ISR_CLEAR(budget->dev, MASK_10); /* VPE */ 155 SAA7146_IER_ENABLE(budget->dev, MASK_10); /* VPE */ 156 saa7146_write(dev, MC1, (MASK_04 | MASK_20)); /* DMA3 on */ 157 158 return 0; 159 } 160 161 static int budget_read_fe_status(struct dvb_frontend *fe, 162 enum fe_status *status) 163 { 164 struct budget *budget = (struct budget *) fe->dvb->priv; 165 int synced; 166 int ret; 167 168 if (budget->read_fe_status) 169 ret = budget->read_fe_status(fe, status); 170 else 171 ret = -EINVAL; 172 173 if (!ret) { 174 synced = (*status & FE_HAS_LOCK); 175 if (synced != budget->fe_synced) { 176 budget->fe_synced = synced; 177 spin_lock(&budget->feedlock); 178 if (synced) 179 start_ts_capture(budget); 180 else 181 stop_ts_capture(budget); 182 spin_unlock(&budget->feedlock); 183 } 184 } 185 return ret; 186 } 187 188 static void vpeirq(unsigned long data) 189 { 190 struct budget *budget = (struct budget *) data; 191 u8 *mem = (u8 *) (budget->grabbing); 192 u32 olddma = budget->ttbp; 193 u32 newdma = saa7146_read(budget->dev, PCI_VDP3); 194 u32 count; 195 196 /* Ensure streamed PCI data is synced to CPU */ 197 pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE); 198 199 /* nearest lower position divisible by 188 */ 200 newdma -= newdma % 188; 201 202 if (newdma >= budget->buffer_size) 203 return; 204 205 budget->ttbp = newdma; 206 207 if (budget->feeding == 0 || newdma == olddma) 208 return; 209 210 if (newdma > olddma) { /* no wraparound, dump olddma..newdma */ 211 count = newdma - olddma; 212 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188); 213 } else { /* wraparound, dump olddma..buflen and 0..newdma */ 214 count = budget->buffer_size - olddma; 215 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188); 216 count += newdma; 217 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188); 218 } 219 220 if (count > budget->buffer_warning_threshold) 221 budget->buffer_warnings++; 222 223 if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) { 224 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n", 225 budget->dev->name, __func__, budget->buffer_warnings, count); 226 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT; 227 budget->buffer_warnings = 0; 228 } 229 } 230 231 232 static int ttpci_budget_debiread_nolock(struct budget *budget, u32 config, 233 int addr, int count, int nobusyloop) 234 { 235 struct saa7146_dev *saa = budget->dev; 236 int result; 237 238 result = saa7146_wait_for_debi_done(saa, nobusyloop); 239 if (result < 0) 240 return result; 241 242 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff)); 243 saa7146_write(saa, DEBI_CONFIG, config); 244 saa7146_write(saa, DEBI_PAGE, 0); 245 saa7146_write(saa, MC2, (2 << 16) | 2); 246 247 result = saa7146_wait_for_debi_done(saa, nobusyloop); 248 if (result < 0) 249 return result; 250 251 result = saa7146_read(saa, DEBI_AD); 252 result &= (0xffffffffUL >> ((4 - count) * 8)); 253 return result; 254 } 255 256 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count, 257 int uselocks, int nobusyloop) 258 { 259 if (count > 4 || count <= 0) 260 return 0; 261 262 if (uselocks) { 263 unsigned long flags; 264 int result; 265 266 spin_lock_irqsave(&budget->debilock, flags); 267 result = ttpci_budget_debiread_nolock(budget, config, addr, 268 count, nobusyloop); 269 spin_unlock_irqrestore(&budget->debilock, flags); 270 return result; 271 } 272 return ttpci_budget_debiread_nolock(budget, config, addr, 273 count, nobusyloop); 274 } 275 276 static int ttpci_budget_debiwrite_nolock(struct budget *budget, u32 config, 277 int addr, int count, u32 value, int nobusyloop) 278 { 279 struct saa7146_dev *saa = budget->dev; 280 int result; 281 282 result = saa7146_wait_for_debi_done(saa, nobusyloop); 283 if (result < 0) 284 return result; 285 286 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff)); 287 saa7146_write(saa, DEBI_CONFIG, config); 288 saa7146_write(saa, DEBI_PAGE, 0); 289 saa7146_write(saa, DEBI_AD, value); 290 saa7146_write(saa, MC2, (2 << 16) | 2); 291 292 result = saa7146_wait_for_debi_done(saa, nobusyloop); 293 return result < 0 ? result : 0; 294 } 295 296 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr, 297 int count, u32 value, int uselocks, int nobusyloop) 298 { 299 if (count > 4 || count <= 0) 300 return 0; 301 302 if (uselocks) { 303 unsigned long flags; 304 int result; 305 306 spin_lock_irqsave(&budget->debilock, flags); 307 result = ttpci_budget_debiwrite_nolock(budget, config, addr, 308 count, value, nobusyloop); 309 spin_unlock_irqrestore(&budget->debilock, flags); 310 return result; 311 } 312 return ttpci_budget_debiwrite_nolock(budget, config, addr, 313 count, value, nobusyloop); 314 } 315 316 317 /**************************************************************************** 318 * DVB API SECTION 319 ****************************************************************************/ 320 321 static int budget_start_feed(struct dvb_demux_feed *feed) 322 { 323 struct dvb_demux *demux = feed->demux; 324 struct budget *budget = (struct budget *) demux->priv; 325 int status = 0; 326 327 dprintk(2, "budget: %p\n", budget); 328 329 if (!demux->dmx.frontend) 330 return -EINVAL; 331 332 spin_lock(&budget->feedlock); 333 feed->pusi_seen = false; /* have a clean section start */ 334 if (budget->feeding++ == 0) 335 status = start_ts_capture(budget); 336 spin_unlock(&budget->feedlock); 337 return status; 338 } 339 340 static int budget_stop_feed(struct dvb_demux_feed *feed) 341 { 342 struct dvb_demux *demux = feed->demux; 343 struct budget *budget = (struct budget *) demux->priv; 344 int status = 0; 345 346 dprintk(2, "budget: %p\n", budget); 347 348 spin_lock(&budget->feedlock); 349 if (--budget->feeding == 0) 350 status = stop_ts_capture(budget); 351 spin_unlock(&budget->feedlock); 352 return status; 353 } 354 355 static int budget_register(struct budget *budget) 356 { 357 struct dvb_demux *dvbdemux = &budget->demux; 358 int ret; 359 360 dprintk(2, "budget: %p\n", budget); 361 362 dvbdemux->priv = (void *) budget; 363 364 dvbdemux->filternum = 256; 365 dvbdemux->feednum = 256; 366 dvbdemux->start_feed = budget_start_feed; 367 dvbdemux->stop_feed = budget_stop_feed; 368 dvbdemux->write_to_decoder = NULL; 369 370 dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | 371 DMX_MEMORY_BASED_FILTERING); 372 373 dvb_dmx_init(&budget->demux); 374 375 budget->dmxdev.filternum = 256; 376 budget->dmxdev.demux = &dvbdemux->dmx; 377 budget->dmxdev.capabilities = 0; 378 379 dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter); 380 381 budget->hw_frontend.source = DMX_FRONTEND_0; 382 383 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend); 384 385 if (ret < 0) 386 return ret; 387 388 budget->mem_frontend.source = DMX_MEMORY_FE; 389 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend); 390 if (ret < 0) 391 return ret; 392 393 ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend); 394 if (ret < 0) 395 return ret; 396 397 dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx); 398 399 return 0; 400 } 401 402 static void budget_unregister(struct budget *budget) 403 { 404 struct dvb_demux *dvbdemux = &budget->demux; 405 406 dprintk(2, "budget: %p\n", budget); 407 408 dvb_net_release(&budget->dvb_net); 409 410 dvbdemux->dmx.close(&dvbdemux->dmx); 411 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend); 412 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend); 413 414 dvb_dmxdev_release(&budget->dmxdev); 415 dvb_dmx_release(&budget->demux); 416 } 417 418 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev, 419 struct saa7146_pci_extension_data *info, 420 struct module *owner, short *adapter_nums) 421 { 422 int ret = 0; 423 struct budget_info *bi = info->ext_priv; 424 int max_bufsize; 425 int height_mask; 426 427 memset(budget, 0, sizeof(struct budget)); 428 429 dprintk(2, "dev: %p, budget: %p\n", dev, budget); 430 431 budget->card = bi; 432 budget->dev = (struct saa7146_dev *) dev; 433 434 switch(budget->card->type) { 435 case BUDGET_FS_ACTIVY: 436 budget->buffer_width = TS_WIDTH_ACTIVY; 437 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY; 438 height_mask = TS_HEIGHT_MASK_ACTIVY; 439 break; 440 441 case BUDGET_KNC1C: 442 case BUDGET_KNC1CP: 443 case BUDGET_CIN1200C: 444 case BUDGET_KNC1C_MK3: 445 case BUDGET_KNC1C_TDA10024: 446 case BUDGET_KNC1CP_MK3: 447 case BUDGET_CIN1200C_MK3: 448 budget->buffer_width = TS_WIDTH_DVBC; 449 max_bufsize = TS_MAX_BUFSIZE_K_DVBC; 450 height_mask = TS_HEIGHT_MASK_DVBC; 451 break; 452 453 default: 454 budget->buffer_width = TS_WIDTH; 455 max_bufsize = TS_MAX_BUFSIZE_K; 456 height_mask = TS_HEIGHT_MASK; 457 } 458 459 if (dma_buffer_size < TS_MIN_BUFSIZE_K) 460 dma_buffer_size = TS_MIN_BUFSIZE_K; 461 else if (dma_buffer_size > max_bufsize) 462 dma_buffer_size = max_bufsize; 463 464 budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width; 465 if (budget->buffer_height > 0xfff) { 466 budget->buffer_height /= 2; 467 budget->buffer_height &= height_mask; 468 budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width; 469 } else { 470 budget->buffer_height &= height_mask; 471 budget->buffer_size = budget->buffer_height * budget->buffer_width; 472 } 473 budget->buffer_warning_threshold = budget->buffer_size * 80/100; 474 budget->buffer_warnings = 0; 475 budget->buffer_warning_time = jiffies; 476 477 dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n", 478 budget->dev->name, 479 budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single", 480 budget->buffer_width, budget->buffer_height); 481 printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size); 482 483 ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, 484 owner, &budget->dev->pci->dev, adapter_nums); 485 if (ret < 0) 486 return ret; 487 488 /* set dd1 stream a & b */ 489 saa7146_write(dev, DD1_STREAM_B, 0x00000000); 490 saa7146_write(dev, MC2, (MASK_09 | MASK_25)); 491 saa7146_write(dev, MC2, (MASK_10 | MASK_26)); 492 saa7146_write(dev, DD1_INIT, 0x02000000); 493 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 494 495 if (bi->type != BUDGET_FS_ACTIVY) 496 budget->video_port = BUDGET_VIDEO_PORTB; 497 else 498 budget->video_port = BUDGET_VIDEO_PORTA; 499 spin_lock_init(&budget->feedlock); 500 spin_lock_init(&budget->debilock); 501 502 /* the Siemens DVB needs this if you want to have the i2c chips 503 get recognized before the main driver is loaded */ 504 if (bi->type != BUDGET_FS_ACTIVY) 505 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */ 506 507 strscpy(budget->i2c_adap.name, budget->card->name, 508 sizeof(budget->i2c_adap.name)); 509 510 saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120); 511 strscpy(budget->i2c_adap.name, budget->card->name, 512 sizeof(budget->i2c_adap.name)); 513 514 if (i2c_add_adapter(&budget->i2c_adap) < 0) { 515 ret = -ENOMEM; 516 goto err_dvb_unregister; 517 } 518 519 ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac); 520 521 budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt); 522 if (NULL == budget->grabbing) { 523 ret = -ENOMEM; 524 goto err_del_i2c; 525 } 526 527 saa7146_write(dev, PCI_BT_V1, 0x001c0000); 528 /* upload all */ 529 saa7146_write(dev, GPIO_CTRL, 0x000000); 530 531 tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget); 532 533 /* frontend power on */ 534 if (bi->type != BUDGET_FS_ACTIVY) 535 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI); 536 537 if ((ret = budget_register(budget)) == 0) 538 return 0; /* Everything OK */ 539 540 /* An error occurred, cleanup resources */ 541 saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt); 542 543 err_del_i2c: 544 i2c_del_adapter(&budget->i2c_adap); 545 546 err_dvb_unregister: 547 dvb_unregister_adapter(&budget->dvb_adapter); 548 549 return ret; 550 } 551 552 void ttpci_budget_init_hooks(struct budget *budget) 553 { 554 if (budget->dvb_frontend && !budget->read_fe_status) { 555 budget->read_fe_status = budget->dvb_frontend->ops.read_status; 556 budget->dvb_frontend->ops.read_status = budget_read_fe_status; 557 } 558 } 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 tasklet_kill(&budget->vpe_tasklet); 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 } 578 579 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr) 580 { 581 struct budget *budget = (struct budget *) dev->ext_priv; 582 583 dprintk(8, "dev: %p, budget: %p\n", dev, budget); 584 585 if (*isr & MASK_10) 586 tasklet_schedule(&budget->vpe_tasklet); 587 } 588 589 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port) 590 { 591 struct budget *budget = (struct budget *) dev->ext_priv; 592 593 spin_lock(&budget->feedlock); 594 budget->video_port = video_port; 595 if (budget->feeding) { 596 stop_ts_capture(budget); 597 start_ts_capture(budget); 598 } 599 spin_unlock(&budget->feedlock); 600 } 601 602 EXPORT_SYMBOL_GPL(ttpci_budget_debiread); 603 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite); 604 EXPORT_SYMBOL_GPL(ttpci_budget_init); 605 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks); 606 EXPORT_SYMBOL_GPL(ttpci_budget_deinit); 607 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler); 608 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port); 609 EXPORT_SYMBOL_GPL(budget_debug); 610 611 MODULE_LICENSE("GPL"); 612