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 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 31 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html 32 * 33 * 34 * the project's page is at http://www.linuxtv.org/ 35 */ 36 37 38 #include "budget.h" 39 #include "ttpci-eeprom.h" 40 41 #define TS_WIDTH (2 * TS_SIZE) 42 #define TS_WIDTH_ACTIVY TS_SIZE 43 #define TS_WIDTH_DVBC TS_SIZE 44 #define TS_HEIGHT_MASK 0xf00 45 #define TS_HEIGHT_MASK_ACTIVY 0xc00 46 #define TS_HEIGHT_MASK_DVBC 0xe00 47 #define TS_MIN_BUFSIZE_K 188 48 #define TS_MAX_BUFSIZE_K 1410 49 #define TS_MAX_BUFSIZE_K_ACTIVY 564 50 #define TS_MAX_BUFSIZE_K_DVBC 1316 51 #define BUFFER_WARNING_WAIT (30*HZ) 52 53 int budget_debug; 54 static int dma_buffer_size = TS_MIN_BUFSIZE_K; 55 module_param_named(debug, budget_debug, int, 0644); 56 module_param_named(bufsize, dma_buffer_size, int, 0444); 57 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off)."); 58 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)"); 59 60 /**************************************************************************** 61 * TT budget / WinTV Nova 62 ****************************************************************************/ 63 64 static int stop_ts_capture(struct budget *budget) 65 { 66 dprintk(2, "budget: %p\n", budget); 67 68 saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off 69 SAA7146_IER_DISABLE(budget->dev, MASK_10); 70 return 0; 71 } 72 73 static int start_ts_capture(struct budget *budget) 74 { 75 struct saa7146_dev *dev = budget->dev; 76 77 dprintk(2, "budget: %p\n", budget); 78 79 if (!budget->feeding || !budget->fe_synced) 80 return 0; 81 82 saa7146_write(dev, MC1, MASK_20); // DMA3 off 83 84 memset(budget->grabbing, 0x00, budget->buffer_size); 85 86 saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000)); 87 88 budget->ttbp = 0; 89 90 /* 91 * Signal path on the Activy: 92 * 93 * tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory 94 * 95 * Since the tuner feeds 204 bytes packets into the SAA7146, 96 * DMA3 is configured to strip the trailing 16 FEC bytes: 97 * Pitch: 188, NumBytes3: 188, NumLines3: 1024 98 */ 99 100 switch(budget->card->type) { 101 case BUDGET_FS_ACTIVY: 102 saa7146_write(dev, DD1_INIT, 0x04000000); 103 saa7146_write(dev, MC2, (MASK_09 | MASK_25)); 104 saa7146_write(dev, BRS_CTRL, 0x00000000); 105 break; 106 case BUDGET_PATCH: 107 saa7146_write(dev, DD1_INIT, 0x00000200); 108 saa7146_write(dev, MC2, (MASK_10 | MASK_26)); 109 saa7146_write(dev, BRS_CTRL, 0x60000000); 110 break; 111 case BUDGET_CIN1200C_MK3: 112 case BUDGET_KNC1C_MK3: 113 case BUDGET_KNC1C_TDA10024: 114 case BUDGET_KNC1CP_MK3: 115 if (budget->video_port == BUDGET_VIDEO_PORTA) { 116 saa7146_write(dev, DD1_INIT, 0x06000200); 117 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 118 saa7146_write(dev, BRS_CTRL, 0x00000000); 119 } else { 120 saa7146_write(dev, DD1_INIT, 0x00000600); 121 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 122 saa7146_write(dev, BRS_CTRL, 0x60000000); 123 } 124 break; 125 default: 126 if (budget->video_port == BUDGET_VIDEO_PORTA) { 127 saa7146_write(dev, DD1_INIT, 0x06000200); 128 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 129 saa7146_write(dev, BRS_CTRL, 0x00000000); 130 } else { 131 saa7146_write(dev, DD1_INIT, 0x02000600); 132 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 133 saa7146_write(dev, BRS_CTRL, 0x60000000); 134 } 135 } 136 137 saa7146_write(dev, MC2, (MASK_08 | MASK_24)); 138 mdelay(10); 139 140 saa7146_write(dev, BASE_ODD3, 0); 141 if (budget->buffer_size > budget->buffer_height * budget->buffer_width) { 142 // using odd/even buffers 143 saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width); 144 } else { 145 // using a single buffer 146 saa7146_write(dev, BASE_EVEN3, 0); 147 } 148 saa7146_write(dev, PROT_ADDR3, budget->buffer_size); 149 saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90); 150 151 saa7146_write(dev, PITCH3, budget->buffer_width); 152 saa7146_write(dev, NUM_LINE_BYTE3, 153 (budget->buffer_height << 16) | budget->buffer_width); 154 155 saa7146_write(dev, MC2, (MASK_04 | MASK_20)); 156 157 SAA7146_ISR_CLEAR(budget->dev, MASK_10); /* VPE */ 158 SAA7146_IER_ENABLE(budget->dev, MASK_10); /* VPE */ 159 saa7146_write(dev, MC1, (MASK_04 | MASK_20)); /* DMA3 on */ 160 161 return 0; 162 } 163 164 static int budget_read_fe_status(struct dvb_frontend *fe, fe_status_t *status) 165 { 166 struct budget *budget = (struct budget *) fe->dvb->priv; 167 int synced; 168 int ret; 169 170 if (budget->read_fe_status) 171 ret = budget->read_fe_status(fe, status); 172 else 173 ret = -EINVAL; 174 175 if (!ret) { 176 synced = (*status & FE_HAS_LOCK); 177 if (synced != budget->fe_synced) { 178 budget->fe_synced = synced; 179 spin_lock(&budget->feedlock); 180 if (synced) 181 start_ts_capture(budget); 182 else 183 stop_ts_capture(budget); 184 spin_unlock(&budget->feedlock); 185 } 186 } 187 return ret; 188 } 189 190 static void vpeirq(unsigned long data) 191 { 192 struct budget *budget = (struct budget *) data; 193 u8 *mem = (u8 *) (budget->grabbing); 194 u32 olddma = budget->ttbp; 195 u32 newdma = saa7146_read(budget->dev, PCI_VDP3); 196 u32 count; 197 198 /* Ensure streamed PCI data is synced to CPU */ 199 pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE); 200 201 /* nearest lower position divisible by 188 */ 202 newdma -= newdma % 188; 203 204 if (newdma >= budget->buffer_size) 205 return; 206 207 budget->ttbp = newdma; 208 209 if (budget->feeding == 0 || newdma == olddma) 210 return; 211 212 if (newdma > olddma) { /* no wraparound, dump olddma..newdma */ 213 count = newdma - olddma; 214 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188); 215 } else { /* wraparound, dump olddma..buflen and 0..newdma */ 216 count = budget->buffer_size - olddma; 217 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188); 218 count += newdma; 219 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188); 220 } 221 222 if (count > budget->buffer_warning_threshold) 223 budget->buffer_warnings++; 224 225 if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) { 226 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n", 227 budget->dev->name, __func__, budget->buffer_warnings, count); 228 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT; 229 budget->buffer_warnings = 0; 230 } 231 } 232 233 234 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count, 235 int uselocks, int nobusyloop) 236 { 237 struct saa7146_dev *saa = budget->dev; 238 int result = 0; 239 unsigned long flags = 0; 240 241 if (count > 4 || count <= 0) 242 return 0; 243 244 if (uselocks) 245 spin_lock_irqsave(&budget->debilock, flags); 246 247 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) { 248 if (uselocks) 249 spin_unlock_irqrestore(&budget->debilock, flags); 250 return result; 251 } 252 253 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff)); 254 saa7146_write(saa, DEBI_CONFIG, config); 255 saa7146_write(saa, DEBI_PAGE, 0); 256 saa7146_write(saa, MC2, (2 << 16) | 2); 257 258 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) { 259 if (uselocks) 260 spin_unlock_irqrestore(&budget->debilock, flags); 261 return result; 262 } 263 264 result = saa7146_read(saa, DEBI_AD); 265 result &= (0xffffffffUL >> ((4 - count) * 8)); 266 267 if (uselocks) 268 spin_unlock_irqrestore(&budget->debilock, flags); 269 270 return result; 271 } 272 273 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr, 274 int count, u32 value, int uselocks, int nobusyloop) 275 { 276 struct saa7146_dev *saa = budget->dev; 277 unsigned long flags = 0; 278 int result; 279 280 if (count > 4 || count <= 0) 281 return 0; 282 283 if (uselocks) 284 spin_lock_irqsave(&budget->debilock, flags); 285 286 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) { 287 if (uselocks) 288 spin_unlock_irqrestore(&budget->debilock, flags); 289 return result; 290 } 291 292 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff)); 293 saa7146_write(saa, DEBI_CONFIG, config); 294 saa7146_write(saa, DEBI_PAGE, 0); 295 saa7146_write(saa, DEBI_AD, value); 296 saa7146_write(saa, MC2, (2 << 16) | 2); 297 298 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) { 299 if (uselocks) 300 spin_unlock_irqrestore(&budget->debilock, flags); 301 return result; 302 } 303 304 if (uselocks) 305 spin_unlock_irqrestore(&budget->debilock, flags); 306 return 0; 307 } 308 309 310 /**************************************************************************** 311 * DVB API SECTION 312 ****************************************************************************/ 313 314 static int budget_start_feed(struct dvb_demux_feed *feed) 315 { 316 struct dvb_demux *demux = feed->demux; 317 struct budget *budget = (struct budget *) demux->priv; 318 int status = 0; 319 320 dprintk(2, "budget: %p\n", budget); 321 322 if (!demux->dmx.frontend) 323 return -EINVAL; 324 325 spin_lock(&budget->feedlock); 326 feed->pusi_seen = 0; /* have a clean section start */ 327 if (budget->feeding++ == 0) 328 status = start_ts_capture(budget); 329 spin_unlock(&budget->feedlock); 330 return status; 331 } 332 333 static int budget_stop_feed(struct dvb_demux_feed *feed) 334 { 335 struct dvb_demux *demux = feed->demux; 336 struct budget *budget = (struct budget *) demux->priv; 337 int status = 0; 338 339 dprintk(2, "budget: %p\n", budget); 340 341 spin_lock(&budget->feedlock); 342 if (--budget->feeding == 0) 343 status = stop_ts_capture(budget); 344 spin_unlock(&budget->feedlock); 345 return status; 346 } 347 348 static int budget_register(struct budget *budget) 349 { 350 struct dvb_demux *dvbdemux = &budget->demux; 351 int ret; 352 353 dprintk(2, "budget: %p\n", budget); 354 355 dvbdemux->priv = (void *) budget; 356 357 dvbdemux->filternum = 256; 358 dvbdemux->feednum = 256; 359 dvbdemux->start_feed = budget_start_feed; 360 dvbdemux->stop_feed = budget_stop_feed; 361 dvbdemux->write_to_decoder = NULL; 362 363 dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | 364 DMX_MEMORY_BASED_FILTERING); 365 366 dvb_dmx_init(&budget->demux); 367 368 budget->dmxdev.filternum = 256; 369 budget->dmxdev.demux = &dvbdemux->dmx; 370 budget->dmxdev.capabilities = 0; 371 372 dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter); 373 374 budget->hw_frontend.source = DMX_FRONTEND_0; 375 376 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend); 377 378 if (ret < 0) 379 return ret; 380 381 budget->mem_frontend.source = DMX_MEMORY_FE; 382 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend); 383 if (ret < 0) 384 return ret; 385 386 ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend); 387 if (ret < 0) 388 return ret; 389 390 dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx); 391 392 return 0; 393 } 394 395 static void budget_unregister(struct budget *budget) 396 { 397 struct dvb_demux *dvbdemux = &budget->demux; 398 399 dprintk(2, "budget: %p\n", budget); 400 401 dvb_net_release(&budget->dvb_net); 402 403 dvbdemux->dmx.close(&dvbdemux->dmx); 404 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend); 405 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend); 406 407 dvb_dmxdev_release(&budget->dmxdev); 408 dvb_dmx_release(&budget->demux); 409 } 410 411 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev, 412 struct saa7146_pci_extension_data *info, 413 struct module *owner, short *adapter_nums) 414 { 415 int ret = 0; 416 struct budget_info *bi = info->ext_priv; 417 int max_bufsize; 418 int height_mask; 419 420 memset(budget, 0, sizeof(struct budget)); 421 422 dprintk(2, "dev: %p, budget: %p\n", dev, budget); 423 424 budget->card = bi; 425 budget->dev = (struct saa7146_dev *) dev; 426 427 switch(budget->card->type) { 428 case BUDGET_FS_ACTIVY: 429 budget->buffer_width = TS_WIDTH_ACTIVY; 430 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY; 431 height_mask = TS_HEIGHT_MASK_ACTIVY; 432 break; 433 434 case BUDGET_KNC1C: 435 case BUDGET_KNC1CP: 436 case BUDGET_CIN1200C: 437 case BUDGET_KNC1C_MK3: 438 case BUDGET_KNC1C_TDA10024: 439 case BUDGET_KNC1CP_MK3: 440 case BUDGET_CIN1200C_MK3: 441 budget->buffer_width = TS_WIDTH_DVBC; 442 max_bufsize = TS_MAX_BUFSIZE_K_DVBC; 443 height_mask = TS_HEIGHT_MASK_DVBC; 444 break; 445 446 default: 447 budget->buffer_width = TS_WIDTH; 448 max_bufsize = TS_MAX_BUFSIZE_K; 449 height_mask = TS_HEIGHT_MASK; 450 } 451 452 if (dma_buffer_size < TS_MIN_BUFSIZE_K) 453 dma_buffer_size = TS_MIN_BUFSIZE_K; 454 else if (dma_buffer_size > max_bufsize) 455 dma_buffer_size = max_bufsize; 456 457 budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width; 458 if (budget->buffer_height > 0xfff) { 459 budget->buffer_height /= 2; 460 budget->buffer_height &= height_mask; 461 budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width; 462 } else { 463 budget->buffer_height &= height_mask; 464 budget->buffer_size = budget->buffer_height * budget->buffer_width; 465 } 466 budget->buffer_warning_threshold = budget->buffer_size * 80/100; 467 budget->buffer_warnings = 0; 468 budget->buffer_warning_time = jiffies; 469 470 dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n", 471 budget->dev->name, 472 budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single", 473 budget->buffer_width, budget->buffer_height); 474 printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size); 475 476 ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, 477 owner, &budget->dev->pci->dev, adapter_nums); 478 if (ret < 0) 479 return ret; 480 481 /* set dd1 stream a & b */ 482 saa7146_write(dev, DD1_STREAM_B, 0x00000000); 483 saa7146_write(dev, MC2, (MASK_09 | MASK_25)); 484 saa7146_write(dev, MC2, (MASK_10 | MASK_26)); 485 saa7146_write(dev, DD1_INIT, 0x02000000); 486 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 487 488 if (bi->type != BUDGET_FS_ACTIVY) 489 budget->video_port = BUDGET_VIDEO_PORTB; 490 else 491 budget->video_port = BUDGET_VIDEO_PORTA; 492 spin_lock_init(&budget->feedlock); 493 spin_lock_init(&budget->debilock); 494 495 /* the Siemens DVB needs this if you want to have the i2c chips 496 get recognized before the main driver is loaded */ 497 if (bi->type != BUDGET_FS_ACTIVY) 498 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */ 499 500 strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name)); 501 502 saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120); 503 strcpy(budget->i2c_adap.name, budget->card->name); 504 505 if (i2c_add_adapter(&budget->i2c_adap) < 0) { 506 ret = -ENOMEM; 507 goto err_dvb_unregister; 508 } 509 510 ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac); 511 512 budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt); 513 if (NULL == budget->grabbing) { 514 ret = -ENOMEM; 515 goto err_del_i2c; 516 } 517 518 saa7146_write(dev, PCI_BT_V1, 0x001c0000); 519 /* upload all */ 520 saa7146_write(dev, GPIO_CTRL, 0x000000); 521 522 tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget); 523 524 /* frontend power on */ 525 if (bi->type != BUDGET_FS_ACTIVY) 526 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI); 527 528 if ((ret = budget_register(budget)) == 0) 529 return 0; /* Everything OK */ 530 531 /* An error occurred, cleanup resources */ 532 saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt); 533 534 err_del_i2c: 535 i2c_del_adapter(&budget->i2c_adap); 536 537 err_dvb_unregister: 538 dvb_unregister_adapter(&budget->dvb_adapter); 539 540 return ret; 541 } 542 543 void ttpci_budget_init_hooks(struct budget *budget) 544 { 545 if (budget->dvb_frontend && !budget->read_fe_status) { 546 budget->read_fe_status = budget->dvb_frontend->ops.read_status; 547 budget->dvb_frontend->ops.read_status = budget_read_fe_status; 548 } 549 } 550 551 int ttpci_budget_deinit(struct budget *budget) 552 { 553 struct saa7146_dev *dev = budget->dev; 554 555 dprintk(2, "budget: %p\n", budget); 556 557 budget_unregister(budget); 558 559 tasklet_kill(&budget->vpe_tasklet); 560 561 saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt); 562 563 i2c_del_adapter(&budget->i2c_adap); 564 565 dvb_unregister_adapter(&budget->dvb_adapter); 566 567 return 0; 568 } 569 570 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr) 571 { 572 struct budget *budget = (struct budget *) dev->ext_priv; 573 574 dprintk(8, "dev: %p, budget: %p\n", dev, budget); 575 576 if (*isr & MASK_10) 577 tasklet_schedule(&budget->vpe_tasklet); 578 } 579 580 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port) 581 { 582 struct budget *budget = (struct budget *) dev->ext_priv; 583 584 spin_lock(&budget->feedlock); 585 budget->video_port = video_port; 586 if (budget->feeding) { 587 stop_ts_capture(budget); 588 start_ts_capture(budget); 589 } 590 spin_unlock(&budget->feedlock); 591 } 592 593 EXPORT_SYMBOL_GPL(ttpci_budget_debiread); 594 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite); 595 EXPORT_SYMBOL_GPL(ttpci_budget_init); 596 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks); 597 EXPORT_SYMBOL_GPL(ttpci_budget_deinit); 598 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler); 599 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port); 600 EXPORT_SYMBOL_GPL(budget_debug); 601 602 MODULE_LICENSE("GPL"); 603