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