drivers/media/dvb/ttpci/budget-core.c

   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/dvb/
  35  */
  36
  37 #include <linux/moduleparam.h>
  38
  39 #include "budget.h"
  40 #include "ttpci-eeprom.h"
  41
  42 #define TS_WIDTH                (2 * TS_SIZE)
  43 #define TS_WIDTH_ACTIVY         TS_SIZE
  44 #define TS_HEIGHT_MASK          0xf00
  45 #define TS_HEIGHT_MASK_ACTIVY   0xc00
  46 #define TS_MIN_BUFSIZE_K        188
  47 #define TS_MAX_BUFSIZE_K        1410
  48 #define TS_MAX_BUFSIZE_K_ACTIVY 564
  49 #define BUFFER_WARNING_WAIT     (30*HZ)
  50
  51 int budget_debug;
  52 static int dma_buffer_size = TS_MIN_BUFSIZE_K;
  53 module_param_named(debug, budget_debug, int, 0644);
  54 module_param_named(bufsize, dma_buffer_size, int, 0444);
  55 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
  56 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
  57
  58 /****************************************************************************
  59  * TT budget / WinTV Nova
  60  ****************************************************************************/
  61
  62 static int stop_ts_capture(struct budget *budget)
  63 {
  64         dprintk(2, "budget: %p\n", budget);
  65
  66         saa7146_write(budget->dev, MC1, MASK_20);       // DMA3 off
  67         SAA7146_IER_DISABLE(budget->dev, MASK_10);
  68         return 0;
  69 }
  70
  71 static int start_ts_capture(struct budget *budget)
  72 {
  73         struct saa7146_dev *dev = budget->dev;
  74
  75         dprintk(2, "budget: %p\n", budget);
  76
  77         if (!budget->feeding || !budget->fe_synced)
  78                 return 0;
  79
  80         saa7146_write(dev, MC1, MASK_20);       // DMA3 off
  81
  82         memset(budget->grabbing, 0x00, budget->buffer_size);
  83
  84         saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
  85
  86         budget->ttbp = 0;
  87
  88         /*
  89          *  Signal path on the Activy:
  90          *
  91          *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
  92          *
  93          *  Since the tuner feeds 204 bytes packets into the SAA7146,
  94          *  DMA3 is configured to strip the trailing 16 FEC bytes:
  95          *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
  96          */
  97
  98         switch(budget->card->type) {
  99         case BUDGET_FS_ACTIVY:
 100                 saa7146_write(dev, DD1_INIT, 0x04000000);
 101                 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 102                 saa7146_write(dev, BRS_CTRL, 0x00000000);
 103                 break;
 104         case BUDGET_PATCH:
 105                 saa7146_write(dev, DD1_INIT, 0x00000200);
 106                 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 107                 saa7146_write(dev, BRS_CTRL, 0x60000000);
 108                 break;
 109         default:
 110                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
 111                         saa7146_write(dev, DD1_INIT, 0x06000200);
 112                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 113                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 114                 } else {
 115                         saa7146_write(dev, DD1_INIT, 0x02000600);
 116                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 117                         saa7146_write(dev, BRS_CTRL, 0x60000000);
 118                 }
 119         }
 120
 121         saa7146_write(dev, MC2, (MASK_08 | MASK_24));
 122         mdelay(10);
 123
 124         saa7146_write(dev, BASE_ODD3, 0);
 125         saa7146_write(dev, BASE_EVEN3, 0);
 126         saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
 127         saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
 128
 129         saa7146_write(dev, PITCH3, budget->buffer_width);
 130         saa7146_write(dev, NUM_LINE_BYTE3,
 131                         (budget->buffer_height << 16) | budget->buffer_width);
 132
 133         saa7146_write(dev, MC2, (MASK_04 | MASK_20));
 134
 135         SAA7146_ISR_CLEAR(budget->dev, MASK_10);        /* VPE */
 136         SAA7146_IER_ENABLE(budget->dev, MASK_10);       /* VPE */
 137         saa7146_write(dev, MC1, (MASK_04 | MASK_20));   /* DMA3 on */
 138
 139         return 0;
 140 }
 141
 142 static int budget_read_fe_status(struct dvb_frontend *fe, fe_status_t *status)
 143 {
 144         struct budget *budget = (struct budget *) fe->dvb->priv;
 145         int synced;
 146         int ret;
 147
 148         if (budget->read_fe_status)
 149                 ret = budget->read_fe_status(fe, status);
 150         else
 151                 ret = -EINVAL;
 152
 153         if (!ret) {
 154                 synced = (*status & FE_HAS_LOCK);
 155                 if (synced != budget->fe_synced) {
 156                         budget->fe_synced = synced;
 157                         spin_lock(&budget->feedlock);
 158                         if (synced)
 159                                 start_ts_capture(budget);
 160                         else
 161                                 stop_ts_capture(budget);
 162                         spin_unlock(&budget->feedlock);
 163                 }
 164         }
 165         return ret;
 166 }
 167
 168 static void vpeirq(unsigned long data)
 169 {
 170         struct budget *budget = (struct budget *) data;
 171         u8 *mem = (u8 *) (budget->grabbing);
 172         u32 olddma = budget->ttbp;
 173         u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
 174         u32 count;
 175
 176         /* nearest lower position divisible by 188 */
 177         newdma -= newdma % 188;
 178
 179         if (newdma >= budget->buffer_size)
 180                 return;
 181
 182         budget->ttbp = newdma;
 183
 184         if (budget->feeding == 0 || newdma == olddma)
 185                 return;
 186
 187         if (newdma > olddma) {  /* no wraparound, dump olddma..newdma */
 188                 count = newdma - olddma;
 189                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 190         } else {                /* wraparound, dump olddma..buflen and 0..newdma */
 191                 count = budget->buffer_size - olddma;
 192                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 193                 count += newdma;
 194                 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
 195         }
 196
 197         if (count > budget->buffer_warning_threshold)
 198                 budget->buffer_warnings++;
 199
 200         if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
 201                 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
 202                         budget->dev->name, __FUNCTION__, budget->buffer_warnings, count);
 203                 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
 204                 budget->buffer_warnings = 0;
 205         }
 206 }
 207
 208
 209 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
 210                           int uselocks, int nobusyloop)
 211 {
 212         struct saa7146_dev *saa = budget->dev;
 213         int result = 0;
 214         unsigned long flags = 0;
 215
 216         if (count > 4 || count <= 0)
 217                 return 0;
 218
 219         if (uselocks)
 220                 spin_lock_irqsave(&budget->debilock, flags);
 221
 222         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 223                 if (uselocks)
 224                         spin_unlock_irqrestore(&budget->debilock, flags);
 225                 return result;
 226         }
 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         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 234                 if (uselocks)
 235                         spin_unlock_irqrestore(&budget->debilock, flags);
 236                 return result;
 237         }
 238
 239         result = saa7146_read(saa, DEBI_AD);
 240         result &= (0xffffffffUL >> ((4 - count) * 8));
 241
 242         if (uselocks)
 243                 spin_unlock_irqrestore(&budget->debilock, flags);
 244
 245         return result;
 246 }
 247
 248 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
 249                            int count, u32 value, int uselocks, int nobusyloop)
 250 {
 251         struct saa7146_dev *saa = budget->dev;
 252         unsigned long flags = 0;
 253         int result;
 254
 255         if (count > 4 || count <= 0)
 256                 return 0;
 257
 258         if (uselocks)
 259                 spin_lock_irqsave(&budget->debilock, flags);
 260
 261         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 262                 if (uselocks)
 263                         spin_unlock_irqrestore(&budget->debilock, flags);
 264                 return result;
 265         }
 266
 267         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
 268         saa7146_write(saa, DEBI_CONFIG, config);
 269         saa7146_write(saa, DEBI_PAGE, 0);
 270         saa7146_write(saa, DEBI_AD, value);
 271         saa7146_write(saa, MC2, (2 << 16) | 2);
 272
 273         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 274                 if (uselocks)
 275                         spin_unlock_irqrestore(&budget->debilock, flags);
 276                 return result;
 277         }
 278
 279         if (uselocks)
 280                 spin_unlock_irqrestore(&budget->debilock, flags);
 281         return 0;
 282 }
 283
 284
 285 /****************************************************************************
 286  * DVB API SECTION
 287  ****************************************************************************/
 288
 289 static int budget_start_feed(struct dvb_demux_feed *feed)
 290 {
 291         struct dvb_demux *demux = feed->demux;
 292         struct budget *budget = (struct budget *) demux->priv;
 293         int status = 0;
 294
 295         dprintk(2, "budget: %p\n", budget);
 296
 297         if (!demux->dmx.frontend)
 298                 return -EINVAL;
 299
 300         spin_lock(&budget->feedlock);
 301         feed->pusi_seen = 0; /* have a clean section start */
 302         if (budget->feeding++ == 0)
 303                 status = start_ts_capture(budget);
 304         spin_unlock(&budget->feedlock);
 305         return status;
 306 }
 307
 308 static int budget_stop_feed(struct dvb_demux_feed *feed)
 309 {
 310         struct dvb_demux *demux = feed->demux;
 311         struct budget *budget = (struct budget *) demux->priv;
 312         int status = 0;
 313
 314         dprintk(2, "budget: %p\n", budget);
 315
 316         spin_lock(&budget->feedlock);
 317         if (--budget->feeding == 0)
 318                 status = stop_ts_capture(budget);
 319         spin_unlock(&budget->feedlock);
 320         return status;
 321 }
 322
 323 static int budget_register(struct budget *budget)
 324 {
 325         struct dvb_demux *dvbdemux = &budget->demux;
 326         int ret;
 327
 328         dprintk(2, "budget: %p\n", budget);
 329
 330         dvbdemux->priv = (void *) budget;
 331
 332         dvbdemux->filternum = 256;
 333         dvbdemux->feednum = 256;
 334         dvbdemux->start_feed = budget_start_feed;
 335         dvbdemux->stop_feed = budget_stop_feed;
 336         dvbdemux->write_to_decoder = NULL;
 337
 338         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 339                                       DMX_MEMORY_BASED_FILTERING);
 340
 341         dvb_dmx_init(&budget->demux);
 342
 343         budget->dmxdev.filternum = 256;
 344         budget->dmxdev.demux = &dvbdemux->dmx;
 345         budget->dmxdev.capabilities = 0;
 346
 347         dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
 348
 349         budget->hw_frontend.source = DMX_FRONTEND_0;
 350
 351         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 352
 353         if (ret < 0)
 354                 return ret;
 355
 356         budget->mem_frontend.source = DMX_MEMORY_FE;
 357         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 358         if (ret < 0)
 359                 return ret;
 360
 361         ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 362         if (ret < 0)
 363                 return ret;
 364
 365         dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
 366
 367         return 0;
 368 }
 369
 370 static void budget_unregister(struct budget *budget)
 371 {
 372         struct dvb_demux *dvbdemux = &budget->demux;
 373
 374         dprintk(2, "budget: %p\n", budget);
 375
 376         dvb_net_release(&budget->dvb_net);
 377
 378         dvbdemux->dmx.close(&dvbdemux->dmx);
 379         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 380         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 381
 382         dvb_dmxdev_release(&budget->dmxdev);
 383         dvb_dmx_release(&budget->demux);
 384 }
 385
 386 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
 387                       struct saa7146_pci_extension_data *info,
 388                       struct module *owner)
 389 {
 390         int ret = 0;
 391         struct budget_info *bi = info->ext_priv;
 392         int max_bufsize;
 393         int height_mask;
 394
 395         memset(budget, 0, sizeof(struct budget));
 396
 397         dprintk(2, "dev: %p, budget: %p\n", dev, budget);
 398
 399         budget->card = bi;
 400         budget->dev = (struct saa7146_dev *) dev;
 401
 402         if (budget->card->type == BUDGET_FS_ACTIVY) {
 403                 budget->buffer_width = TS_WIDTH_ACTIVY;
 404                 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
 405                 height_mask = TS_HEIGHT_MASK_ACTIVY;
 406         } else {
 407                 budget->buffer_width = TS_WIDTH;
 408                 max_bufsize = TS_MAX_BUFSIZE_K;
 409                 height_mask = TS_HEIGHT_MASK;
 410         }
 411
 412         if (dma_buffer_size < TS_MIN_BUFSIZE_K)
 413                 dma_buffer_size = TS_MIN_BUFSIZE_K;
 414         else if (dma_buffer_size > max_bufsize)
 415                 dma_buffer_size = max_bufsize;
 416
 417         budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
 418         budget->buffer_height &= height_mask;
 419         budget->buffer_size = budget->buffer_height * budget->buffer_width;
 420         budget->buffer_warning_threshold = budget->buffer_size * 80/100;
 421         budget->buffer_warnings = 0;
 422         budget->buffer_warning_time = jiffies;
 423
 424         dprintk(2, "%s: width = %d, height = %d\n",
 425                 budget->dev->name, budget->buffer_width, budget->buffer_height);
 426         printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
 427
 428         if ((ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, owner, &budget->dev->pci->dev)) < 0) {
 429                 return ret;
 430         }
 431
 432         /* set dd1 stream a & b */
 433         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 434         saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 435         saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 436         saa7146_write(dev, DD1_INIT, 0x02000000);
 437         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 438
 439         if (bi->type != BUDGET_FS_ACTIVY)
 440                 budget->video_port = BUDGET_VIDEO_PORTB;
 441         else
 442                 budget->video_port = BUDGET_VIDEO_PORTA;
 443         spin_lock_init(&budget->feedlock);
 444         spin_lock_init(&budget->debilock);
 445
 446         /* the Siemens DVB needs this if you want to have the i2c chips
 447            get recognized before the main driver is loaded */
 448         if (bi->type != BUDGET_FS_ACTIVY)
 449                 saa7146_write(dev, GPIO_CTRL, 0x500000);        /* GPIO 3 = 1 */
 450
 451 #ifdef I2C_ADAP_CLASS_TV_DIGITAL
 452         budget->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL;
 453 #else
 454         budget->i2c_adap.class = I2C_CLASS_TV_DIGITAL;
 455 #endif
 456
 457         strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
 458
 459         saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
 460         strcpy(budget->i2c_adap.name, budget->card->name);
 461
 462         if (i2c_add_adapter(&budget->i2c_adap) < 0) {
 463                 dvb_unregister_adapter(&budget->dvb_adapter);
 464                 return -ENOMEM;
 465         }
 466
 467         ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
 468
 469         if (NULL ==
 470             (budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt))) {
 471                 ret = -ENOMEM;
 472                 goto err;
 473         }
 474
 475         saa7146_write(dev, PCI_BT_V1, 0x001c0000);
 476         /* upload all */
 477         saa7146_write(dev, GPIO_CTRL, 0x000000);
 478
 479         tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
 480
 481         /* frontend power on */
 482         if (bi->type != BUDGET_FS_ACTIVY)
 483                 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 484
 485         if (budget_register(budget) == 0) {
 486                 return 0;
 487         }
 488 err:
 489         i2c_del_adapter(&budget->i2c_adap);
 490
 491         vfree(budget->grabbing);
 492
 493         dvb_unregister_adapter(&budget->dvb_adapter);
 494
 495         return ret;
 496 }
 497
 498 void ttpci_budget_init_hooks(struct budget *budget)
 499 {
 500         if (budget->dvb_frontend && !budget->read_fe_status) {
 501                 budget->read_fe_status = budget->dvb_frontend->ops.read_status;
 502                 budget->dvb_frontend->ops.read_status = budget_read_fe_status;
 503         }
 504 }
 505
 506 int ttpci_budget_deinit(struct budget *budget)
 507 {
 508         struct saa7146_dev *dev = budget->dev;
 509
 510         dprintk(2, "budget: %p\n", budget);
 511
 512         budget_unregister(budget);
 513
 514         i2c_del_adapter(&budget->i2c_adap);
 515
 516         dvb_unregister_adapter(&budget->dvb_adapter);
 517
 518         tasklet_kill(&budget->vpe_tasklet);
 519
 520         saa7146_pgtable_free(dev->pci, &budget->pt);
 521
 522         vfree(budget->grabbing);
 523
 524         return 0;
 525 }
 526
 527 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
 528 {
 529         struct budget *budget = (struct budget *) dev->ext_priv;
 530
 531         dprintk(8, "dev: %p, budget: %p\n", dev, budget);
 532
 533         if (*isr & MASK_10)
 534                 tasklet_schedule(&budget->vpe_tasklet);
 535 }
 536
 537 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
 538 {
 539         struct budget *budget = (struct budget *) dev->ext_priv;
 540
 541         spin_lock(&budget->feedlock);
 542         budget->video_port = video_port;
 543         if (budget->feeding) {
 544                 stop_ts_capture(budget);
 545                 start_ts_capture(budget);
 546         }
 547         spin_unlock(&budget->feedlock);
 548 }
 549
 550 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
 551 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
 552 EXPORT_SYMBOL_GPL(ttpci_budget_init);
 553 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
 554 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
 555 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
 556 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
 557 EXPORT_SYMBOL_GPL(budget_debug);
 558
 559 MODULE_LICENSE("GPL");