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 int budget_debug;
  43
  44 module_param_named(debug, budget_debug, int, 0644);
  45 MODULE_PARM_DESC(budget_debug, "Turn on/off budget debugging (default:off).");
  46
  47 /****************************************************************************
  48  * TT budget / WinTV Nova
  49  ****************************************************************************/
  50
  51 static int stop_ts_capture(struct budget *budget)
  52 {
  53         dprintk(2, "budget: %p\n", budget);
  54
  55         if (--budget->feeding)
  56                 return budget->feeding;
  57
  58         saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off
  59         SAA7146_IER_DISABLE(budget->dev, MASK_10);
  60         return 0;
  61 }
  62
  63
  64 static int start_ts_capture (struct budget *budget)
  65 {
  66         struct saa7146_dev *dev=budget->dev;
  67
  68         dprintk(2, "budget: %p\n", budget);
  69
  70         if (budget->feeding)
  71                 return ++budget->feeding;
  72
  73         saa7146_write(dev, MC1, MASK_20); // DMA3 off
  74
  75         memset(budget->grabbing, 0x00, TS_HEIGHT*TS_WIDTH);
  76
  77         saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
  78
  79         budget->tsf=0xff;
  80         budget->ttbp=0;
  81
  82         /*
  83          *  Signal path on the Activy:
  84          *
  85          *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
  86          *
  87          *  Since the tuner feeds 204 bytes packets into the SAA7146,
  88          *  DMA3 is configured to strip the trailing 16 FEC bytes:
  89          *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
  90          */
  91
  92         switch(budget->card->type) {
  93         case BUDGET_FS_ACTIVY:
  94                 saa7146_write(dev, DD1_INIT, 0x04000000);
  95                 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
  96                 saa7146_write(dev, BRS_CTRL, 0x00000000);
  97                 break;
  98         case BUDGET_PATCH:
  99                 saa7146_write(dev, DD1_INIT, 0x00000200);
 100                 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 101                 saa7146_write(dev, BRS_CTRL, 0x60000000);
 102                 break;
 103         default:
 104                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
 105                         saa7146_write(dev, DD1_INIT, 0x06000200);
 106                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 107                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 108                 } else {
 109         saa7146_write(dev, DD1_INIT, 0x02000600);
 110         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 111         saa7146_write(dev, BRS_CTRL, 0x60000000);
 112                 }
 113         }
 114
 115         saa7146_write(dev, MC2, (MASK_08 | MASK_24));
 116         mdelay(10);
 117
 118         saa7146_write(dev, BASE_ODD3, 0);
 119         saa7146_write(dev, BASE_EVEN3, 0);
 120         saa7146_write(dev, PROT_ADDR3, TS_WIDTH*TS_HEIGHT);
 121         saa7146_write(dev, BASE_PAGE3, budget->pt.dma |ME1|0x90);
 122
 123         if (budget->card->type == BUDGET_FS_ACTIVY) {
 124                 saa7146_write(dev, PITCH3, TS_WIDTH/2);
 125                 saa7146_write(dev, NUM_LINE_BYTE3, ((TS_HEIGHT*2)<<16)|(TS_WIDTH/2));
 126         } else {
 127                 saa7146_write(dev, PITCH3, TS_WIDTH);
 128         saa7146_write(dev, NUM_LINE_BYTE3, (TS_HEIGHT<<16)|TS_WIDTH);
 129         }
 130
 131         saa7146_write(dev, MC2, (MASK_04 | MASK_20));
 132
 133         SAA7146_ISR_CLEAR(budget->dev, MASK_10);        /* VPE */
 134         SAA7146_IER_ENABLE(budget->dev, MASK_10);       /* VPE */
 135         saa7146_write(dev, MC1, (MASK_04 | MASK_20));   /* DMA3 on */
 136
 137         return ++budget->feeding;
 138 }
 139
 140
 141 static void vpeirq (unsigned long data)
 142 {
 143         struct budget *budget = (struct budget*) data;
 144         u8 *mem = (u8 *)(budget->grabbing);
 145         u32 olddma = budget->ttbp;
 146         u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
 147
 148         /* nearest lower position divisible by 188 */
 149         newdma -= newdma % 188;
 150
 151         if (newdma >= TS_BUFLEN)
 152                 return;
 153
 154         budget->ttbp = newdma;
 155
 156         if(budget->feeding == 0 || newdma == olddma)
 157                 return;
 158
 159         if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
 160                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, (newdma - olddma) / 188);
 161         } else { /* wraparound, dump olddma..buflen and 0..newdma */
 162                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, (TS_BUFLEN - olddma) / 188);
 163                 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
 164         }
 165         }
 166
 167
 168 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
 169                           int uselocks, int nobusyloop)
 170 {
 171         struct saa7146_dev *saa = budget->dev;
 172         int result = 0;
 173         unsigned long flags = 0;
 174
 175         if (count > 4 || count <= 0)
 176                 return 0;
 177
 178         if (uselocks)
 179                 spin_lock_irqsave(&budget->debilock, flags);
 180
 181         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 182                 if (uselocks)
 183                         spin_unlock_irqrestore(&budget->debilock, flags);
 184                 return result;
 185         }
 186
 187         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
 188         saa7146_write(saa, DEBI_CONFIG, config);
 189         saa7146_write(saa, DEBI_PAGE, 0);
 190         saa7146_write(saa, MC2, (2 << 16) | 2);
 191
 192         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 193                 if (uselocks)
 194                         spin_unlock_irqrestore(&budget->debilock, flags);
 195                 return result;
 196         }
 197
 198         result = saa7146_read(saa, DEBI_AD);
 199         result &= (0xffffffffUL >> ((4 - count) * 8));
 200
 201         if (uselocks)
 202                 spin_unlock_irqrestore(&budget->debilock, flags);
 203
 204         return result;
 205 }
 206
 207 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
 208                            int count, u32 value, int uselocks, int nobusyloop)
 209 {
 210         struct saa7146_dev *saa = budget->dev;
 211         unsigned long flags = 0;
 212         int result;
 213
 214         if (count > 4 || count <= 0)
 215                 return 0;
 216
 217         if (uselocks)
 218                 spin_lock_irqsave(&budget->debilock, flags);
 219
 220         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 221                 if (uselocks)
 222                         spin_unlock_irqrestore(&budget->debilock, flags);
 223                 return result;
 224         }
 225
 226         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
 227         saa7146_write(saa, DEBI_CONFIG, config);
 228         saa7146_write(saa, DEBI_PAGE, 0);
 229         saa7146_write(saa, DEBI_AD, value);
 230         saa7146_write(saa, MC2, (2 << 16) | 2);
 231
 232         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 233                 if (uselocks)
 234                         spin_unlock_irqrestore(&budget->debilock, flags);
 235                 return result;
 236         }
 237
 238         if (uselocks)
 239                 spin_unlock_irqrestore(&budget->debilock, flags);
 240         return 0;
 241 }
 242
 243
 244 /****************************************************************************
 245  * DVB API SECTION
 246  ****************************************************************************/
 247
 248 static int budget_start_feed(struct dvb_demux_feed *feed)
 249 {
 250         struct dvb_demux *demux = feed->demux;
 251         struct budget *budget = (struct budget*) demux->priv;
 252         int status;
 253
 254         dprintk(2, "budget: %p\n", budget);
 255
 256         if (!demux->dmx.frontend)
 257                 return -EINVAL;
 258
 259         spin_lock(&budget->feedlock);
 260         feed->pusi_seen = 0; /* have a clean section start */
 261         status = start_ts_capture (budget);
 262         spin_unlock(&budget->feedlock);
 263         return status;
 264 }
 265
 266 static int budget_stop_feed(struct dvb_demux_feed *feed)
 267 {
 268         struct dvb_demux *demux = feed->demux;
 269         struct budget *budget = (struct budget *) demux->priv;
 270         int status;
 271
 272         dprintk(2, "budget: %p\n", budget);
 273
 274         spin_lock(&budget->feedlock);
 275         status = stop_ts_capture (budget);
 276         spin_unlock(&budget->feedlock);
 277         return status;
 278 }
 279
 280
 281 static int budget_register(struct budget *budget)
 282 {
 283         struct dvb_demux *dvbdemux=&budget->demux;
 284         int ret;
 285
 286         dprintk(2, "budget: %p\n", budget);
 287
 288         dvbdemux->priv = (void *) budget;
 289
 290         dvbdemux->filternum = 256;
 291         dvbdemux->feednum = 256;
 292         dvbdemux->start_feed = budget_start_feed;
 293         dvbdemux->stop_feed = budget_stop_feed;
 294         dvbdemux->write_to_decoder = NULL;
 295
 296         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 297                                       DMX_MEMORY_BASED_FILTERING);
 298
 299         dvb_dmx_init(&budget->demux);
 300
 301         budget->dmxdev.filternum = 256;
 302         budget->dmxdev.demux = &dvbdemux->dmx;
 303         budget->dmxdev.capabilities = 0;
 304
 305         dvb_dmxdev_init(&budget->dmxdev, budget->dvb_adapter);
 306
 307         budget->hw_frontend.source = DMX_FRONTEND_0;
 308
 309         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 310
 311         if (ret < 0)
 312                 return ret;
 313
 314         budget->mem_frontend.source = DMX_MEMORY_FE;
 315         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 316         if (ret<0)
 317                 return ret;
 318
 319         ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 320         if (ret < 0)
 321                 return ret;
 322
 323         dvb_net_init(budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
 324
 325         return 0;
 326 }
 327
 328
 329 static void budget_unregister(struct budget *budget)
 330 {
 331         struct dvb_demux *dvbdemux=&budget->demux;
 332
 333         dprintk(2, "budget: %p\n", budget);
 334
 335         dvb_net_release(&budget->dvb_net);
 336
 337         dvbdemux->dmx.close(&dvbdemux->dmx);
 338         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 339         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 340
 341         dvb_dmxdev_release(&budget->dmxdev);
 342         dvb_dmx_release(&budget->demux);
 343 }
 344
 345 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
 346                       struct saa7146_pci_extension_data *info,
 347                       struct module *owner)
 348 {
 349         int length = TS_WIDTH*TS_HEIGHT;
 350         int ret = 0;
 351         struct budget_info *bi = info->ext_priv;
 352
 353         memset(budget, 0, sizeof(struct budget));
 354
 355         dprintk(2, "dev: %p, budget: %p\n", dev, budget);
 356
 357         budget->card = bi;
 358         budget->dev = (struct saa7146_dev *) dev;
 359
 360         dvb_register_adapter(&budget->dvb_adapter, budget->card->name, owner);
 361
 362         /* set dd1 stream a & b */
 363         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 364         saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 365         saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 366         saa7146_write(dev, DD1_INIT, 0x02000000);
 367         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 368
 369         if (bi->type != BUDGET_FS_ACTIVY)
 370                 budget->video_port = BUDGET_VIDEO_PORTB;
 371         else
 372                 budget->video_port = BUDGET_VIDEO_PORTA;
 373         spin_lock_init(&budget->feedlock);
 374         spin_lock_init(&budget->debilock);
 375
 376         /* the Siemens DVB needs this if you want to have the i2c chips
 377            get recognized before the main driver is loaded */
 378         if (bi->type != BUDGET_FS_ACTIVY)
 379                 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
 380
 381 #ifdef I2C_ADAP_CLASS_TV_DIGITAL
 382         budget->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL;
 383 #else
 384         budget->i2c_adap.class = I2C_CLASS_TV_DIGITAL;
 385 #endif
 386
 387         strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
 388
 389         saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
 390         strcpy(budget->i2c_adap.name, budget->card->name);
 391
 392         if (i2c_add_adapter(&budget->i2c_adap) < 0) {
 393                 dvb_unregister_adapter (budget->dvb_adapter);
 394                 return -ENOMEM;
 395         }
 396
 397         ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter->proposed_mac);
 398
 399         if (NULL ==
 400             (budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, length, &budget->pt))) {
 401                 ret = -ENOMEM;
 402                 goto err;
 403         }
 404
 405         saa7146_write(dev, PCI_BT_V1, 0x001c0000);
 406         /* upload all */
 407         saa7146_write(dev, GPIO_CTRL, 0x000000);
 408
 409         tasklet_init (&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
 410
 411         /* frontend power on */
 412         if (bi->type == BUDGET_FS_ACTIVY)
 413                 saa7146_setgpio(dev, 1, SAA7146_GPIO_OUTHI);
 414         else
 415                 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 416
 417         if (budget_register(budget) == 0) {
 418                 return 0;
 419         }
 420 err:
 421         i2c_del_adapter(&budget->i2c_adap);
 422
 423         if (budget->grabbing)
 424                 vfree(budget->grabbing);
 425
 426         dvb_unregister_adapter (budget->dvb_adapter);
 427
 428         return ret;
 429 }
 430
 431
 432 int ttpci_budget_deinit (struct budget *budget)
 433 {
 434         struct saa7146_dev *dev = budget->dev;
 435
 436         dprintk(2, "budget: %p\n", budget);
 437
 438         budget_unregister (budget);
 439
 440         i2c_del_adapter(&budget->i2c_adap);
 441
 442         dvb_unregister_adapter (budget->dvb_adapter);
 443
 444         tasklet_kill (&budget->vpe_tasklet);
 445
 446         saa7146_pgtable_free (dev->pci, &budget->pt);
 447
 448         vfree (budget->grabbing);
 449
 450         return 0;
 451 }
 452
 453 void ttpci_budget_irq10_handler (struct saa7146_dev* dev, u32 *isr)
 454 {
 455         struct budget *budget = (struct budget*)dev->ext_priv;
 456
 457         dprintk(8, "dev: %p, budget: %p\n",dev,budget);
 458
 459         if (*isr & MASK_10)
 460                 tasklet_schedule (&budget->vpe_tasklet);
 461 }
 462
 463 void ttpci_budget_set_video_port(struct saa7146_dev* dev, int video_port)
 464 {
 465         struct budget *budget = (struct budget*)dev->ext_priv;
 466
 467         spin_lock(&budget->feedlock);
 468         budget->video_port = video_port;
 469         if (budget->feeding) {
 470                 int oldfeeding = budget->feeding;
 471                 budget->feeding = 1;
 472                 stop_ts_capture(budget);
 473                 start_ts_capture(budget);
 474                 budget->feeding = oldfeeding;
 475         }
 476         spin_unlock(&budget->feedlock);
 477 }
 478
 479 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
 480 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
 481 EXPORT_SYMBOL_GPL(ttpci_budget_init);
 482 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
 483 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
 484 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
 485 EXPORT_SYMBOL_GPL(budget_debug);
 486
 487 MODULE_LICENSE("GPL");
 488