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 53int budget_debug; 54static int dma_buffer_size = TS_MIN_BUFSIZE_K; 55module_param_named(debug, budget_debug, int, 0644); 56module_param_named(bufsize, dma_buffer_size, int, 0444); 57MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off)."); 58MODULE_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 64static 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 73static 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 164static 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 190static 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 234static int ttpci_budget_debiread_nolock(struct budget *budget, u32 config, 235 int addr, int count, int nobusyloop) 236{ 237 struct saa7146_dev *saa = budget->dev; 238 int result; 239 240 result = saa7146_wait_for_debi_done(saa, nobusyloop); 241 if (result < 0) 242 return result; 243 244 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff)); 245 saa7146_write(saa, DEBI_CONFIG, config); 246 saa7146_write(saa, DEBI_PAGE, 0); 247 saa7146_write(saa, MC2, (2 << 16) | 2); 248 249 result = saa7146_wait_for_debi_done(saa, nobusyloop); 250 if (result < 0) 251 return result; 252 253 result = saa7146_read(saa, DEBI_AD); 254 result &= (0xffffffffUL >> ((4 - count) * 8)); 255 return result; 256} 257 258int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count, 259 int uselocks, int nobusyloop) 260{ 261 if (count > 4 || count <= 0) 262 return 0; 263 264 if (uselocks) { 265 unsigned long flags; 266 int result; 267 268 spin_lock_irqsave(&budget->debilock, flags); 269 result = ttpci_budget_debiread_nolock(budget, config, addr, 270 count, nobusyloop); 271 spin_unlock_irqrestore(&budget->debilock, flags); 272 return result; 273 } 274 return ttpci_budget_debiread_nolock(budget, config, addr, 275 count, nobusyloop); 276} 277 278static int ttpci_budget_debiwrite_nolock(struct budget *budget, u32 config, 279 int addr, int count, u32 value, int nobusyloop) 280{ 281 struct saa7146_dev *saa = budget->dev; 282 int result; 283 284 result = saa7146_wait_for_debi_done(saa, nobusyloop); 285 if (result < 0) 286 return result; 287 288 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff)); 289 saa7146_write(saa, DEBI_CONFIG, config); 290 saa7146_write(saa, DEBI_PAGE, 0); 291 saa7146_write(saa, DEBI_AD, value); 292 saa7146_write(saa, MC2, (2 << 16) | 2); 293 294 result = saa7146_wait_for_debi_done(saa, nobusyloop); 295 return result < 0 ? result : 0; 296} 297 298int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr, 299 int count, u32 value, int uselocks, int nobusyloop) 300{ 301 if (count > 4 || count <= 0) 302 return 0; 303 304 if (uselocks) { 305 unsigned long flags; 306 int result; 307 308 spin_lock_irqsave(&budget->debilock, flags); 309 result = ttpci_budget_debiwrite_nolock(budget, config, addr, 310 count, value, nobusyloop); 311 spin_unlock_irqrestore(&budget->debilock, flags); 312 return result; 313 } 314 return ttpci_budget_debiwrite_nolock(budget, config, addr, 315 count, value, nobusyloop); 316} 317 318 319/**************************************************************************** 320 * DVB API SECTION 321 ****************************************************************************/ 322 323static int budget_start_feed(struct dvb_demux_feed *feed) 324{ 325 struct dvb_demux *demux = feed->demux; 326 struct budget *budget = (struct budget *) demux->priv; 327 int status = 0; 328 329 dprintk(2, "budget: %p\n", budget); 330 331 if (!demux->dmx.frontend) 332 return -EINVAL; 333 334 spin_lock(&budget->feedlock); 335 feed->pusi_seen = 0; /* have a clean section start */ 336 if (budget->feeding++ == 0) 337 status = start_ts_capture(budget); 338 spin_unlock(&budget->feedlock); 339 return status; 340} 341 342static int budget_stop_feed(struct dvb_demux_feed *feed) 343{ 344 struct dvb_demux *demux = feed->demux; 345 struct budget *budget = (struct budget *) demux->priv; 346 int status = 0; 347 348 dprintk(2, "budget: %p\n", budget); 349 350 spin_lock(&budget->feedlock); 351 if (--budget->feeding == 0) 352 status = stop_ts_capture(budget); 353 spin_unlock(&budget->feedlock); 354 return status; 355} 356 357static int budget_register(struct budget *budget) 358{ 359 struct dvb_demux *dvbdemux = &budget->demux; 360 int ret; 361 362 dprintk(2, "budget: %p\n", budget); 363 364 dvbdemux->priv = (void *) budget; 365 366 dvbdemux->filternum = 256; 367 dvbdemux->feednum = 256; 368 dvbdemux->start_feed = budget_start_feed; 369 dvbdemux->stop_feed = budget_stop_feed; 370 dvbdemux->write_to_decoder = NULL; 371 372 dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | 373 DMX_MEMORY_BASED_FILTERING); 374 375 dvb_dmx_init(&budget->demux); 376 377 budget->dmxdev.filternum = 256; 378 budget->dmxdev.demux = &dvbdemux->dmx; 379 budget->dmxdev.capabilities = 0; 380 381 dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter); 382 383 budget->hw_frontend.source = DMX_FRONTEND_0; 384 385 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend); 386 387 if (ret < 0) 388 return ret; 389 390 budget->mem_frontend.source = DMX_MEMORY_FE; 391 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend); 392 if (ret < 0) 393 return ret; 394 395 ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend); 396 if (ret < 0) 397 return ret; 398 399 dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx); 400 401 return 0; 402} 403 404static void budget_unregister(struct budget *budget) 405{ 406 struct dvb_demux *dvbdemux = &budget->demux; 407 408 dprintk(2, "budget: %p\n", budget); 409 410 dvb_net_release(&budget->dvb_net); 411 412 dvbdemux->dmx.close(&dvbdemux->dmx); 413 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend); 414 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend); 415 416 dvb_dmxdev_release(&budget->dmxdev); 417 dvb_dmx_release(&budget->demux); 418} 419 420int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev, 421 struct saa7146_pci_extension_data *info, 422 struct module *owner, short *adapter_nums) 423{ 424 int ret = 0; 425 struct budget_info *bi = info->ext_priv; 426 int max_bufsize; 427 int height_mask; 428 429 memset(budget, 0, sizeof(struct budget)); 430 431 dprintk(2, "dev: %p, budget: %p\n", dev, budget); 432 433 budget->card = bi; 434 budget->dev = (struct saa7146_dev *) dev; 435 436 switch(budget->card->type) { 437 case BUDGET_FS_ACTIVY: 438 budget->buffer_width = TS_WIDTH_ACTIVY; 439 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY; 440 height_mask = TS_HEIGHT_MASK_ACTIVY; 441 break; 442 443 case BUDGET_KNC1C: 444 case BUDGET_KNC1CP: 445 case BUDGET_CIN1200C: 446 case BUDGET_KNC1C_MK3: 447 case BUDGET_KNC1C_TDA10024: 448 case BUDGET_KNC1CP_MK3: 449 case BUDGET_CIN1200C_MK3: 450 budget->buffer_width = TS_WIDTH_DVBC; 451 max_bufsize = TS_MAX_BUFSIZE_K_DVBC; 452 height_mask = TS_HEIGHT_MASK_DVBC; 453 break; 454 455 default: 456 budget->buffer_width = TS_WIDTH; 457 max_bufsize = TS_MAX_BUFSIZE_K; 458 height_mask = TS_HEIGHT_MASK; 459 } 460 461 if (dma_buffer_size < TS_MIN_BUFSIZE_K) 462 dma_buffer_size = TS_MIN_BUFSIZE_K; 463 else if (dma_buffer_size > max_bufsize) 464 dma_buffer_size = max_bufsize; 465 466 budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width; 467 if (budget->buffer_height > 0xfff) { 468 budget->buffer_height /= 2; 469 budget->buffer_height &= height_mask; 470 budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width; 471 } else { 472 budget->buffer_height &= height_mask; 473 budget->buffer_size = budget->buffer_height * budget->buffer_width; 474 } 475 budget->buffer_warning_threshold = budget->buffer_size * 80/100; 476 budget->buffer_warnings = 0; 477 budget->buffer_warning_time = jiffies; 478 479 dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n", 480 budget->dev->name, 481 budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single", 482 budget->buffer_width, budget->buffer_height); 483 printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size); 484 485 ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, 486 owner, &budget->dev->pci->dev, adapter_nums); 487 if (ret < 0) 488 return ret; 489 490 /* set dd1 stream a & b */ 491 saa7146_write(dev, DD1_STREAM_B, 0x00000000); 492 saa7146_write(dev, MC2, (MASK_09 | MASK_25)); 493 saa7146_write(dev, MC2, (MASK_10 | MASK_26)); 494 saa7146_write(dev, DD1_INIT, 0x02000000); 495 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26)); 496 497 if (bi->type != BUDGET_FS_ACTIVY) 498 budget->video_port = BUDGET_VIDEO_PORTB; 499 else 500 budget->video_port = BUDGET_VIDEO_PORTA; 501 spin_lock_init(&budget->feedlock); 502 spin_lock_init(&budget->debilock); 503 504 /* the Siemens DVB needs this if you want to have the i2c chips 505 get recognized before the main driver is loaded */ 506 if (bi->type != BUDGET_FS_ACTIVY) 507 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */ 508 509 strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name)); 510 511 saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120); 512 strcpy(budget->i2c_adap.name, budget->card->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 543err_del_i2c: 544 i2c_del_adapter(&budget->i2c_adap); 545 546err_dvb_unregister: 547 dvb_unregister_adapter(&budget->dvb_adapter); 548 549 return ret; 550} 551 552void 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 560int 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 579void 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 589void 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 602EXPORT_SYMBOL_GPL(ttpci_budget_debiread); 603EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite); 604EXPORT_SYMBOL_GPL(ttpci_budget_init); 605EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks); 606EXPORT_SYMBOL_GPL(ttpci_budget_deinit); 607EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler); 608EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port); 609EXPORT_SYMBOL_GPL(budget_debug); 610 611MODULE_LICENSE("GPL"); 612