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         if (--budget->feeding)
  67                 return budget->feeding;
  68
  69         saa7146_write(budget->dev, MC1, MASK_20);       // DMA3 off
  70         SAA7146_IER_DISABLE(budget->dev, MASK_10);
  71         return 0;
  72 }
  73
  74 static int start_ts_capture(struct budget *budget)
  75 {
  76         struct saa7146_dev *dev = budget->dev;
  77
  78         dprintk(2, "budget: %p\n", budget);
  79
  80         if (budget->feeding)
  81                 return ++budget->feeding;
  82
  83         saa7146_write(dev, MC1, MASK_20);       // DMA3 off
  84
  85         memset(budget->grabbing, 0x00, budget->buffer_size);
  86
  87         saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
  88
  89         budget->ttbp = 0;
  90
  91         /*
  92          *  Signal path on the Activy:
  93          *
  94          *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
  95          *
  96          *  Since the tuner feeds 204 bytes packets into the SAA7146,
  97          *  DMA3 is configured to strip the trailing 16 FEC bytes:
  98          *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
  99          */
 100
 101         switch(budget->card->type) {
 102         case BUDGET_FS_ACTIVY:
 103                 saa7146_write(dev, DD1_INIT, 0x04000000);
 104                 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 105                 saa7146_write(dev, BRS_CTRL, 0x00000000);
 106                 break;
 107         case BUDGET_PATCH:
 108                 saa7146_write(dev, DD1_INIT, 0x00000200);
 109                 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 110                 saa7146_write(dev, BRS_CTRL, 0x60000000);
 111                 break;
 112         default:
 113                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
 114                         saa7146_write(dev, DD1_INIT, 0x06000200);
 115                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 116                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 117                 } else {
 118                         saa7146_write(dev, DD1_INIT, 0x02000600);
 119                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 120                         saa7146_write(dev, BRS_CTRL, 0x60000000);
 121                 }
 122         }
 123
 124         saa7146_write(dev, MC2, (MASK_08 | MASK_24));
 125         mdelay(10);
 126
 127         saa7146_write(dev, BASE_ODD3, 0);
 128         saa7146_write(dev, BASE_EVEN3, 0);
 129         saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
 130         saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
 131
 132         saa7146_write(dev, PITCH3, budget->buffer_width);
 133         saa7146_write(dev, NUM_LINE_BYTE3,
 134                         (budget->buffer_height << 16) | budget->buffer_width);
 135
 136         saa7146_write(dev, MC2, (MASK_04 | MASK_20));
 137
 138         SAA7146_ISR_CLEAR(budget->dev, MASK_10);        /* VPE */
 139         SAA7146_IER_ENABLE(budget->dev, MASK_10);       /* VPE */
 140         saa7146_write(dev, MC1, (MASK_04 | MASK_20));   /* DMA3 on */
 141
 142         return ++budget->feeding;
 143 }
 144
 145 static void vpeirq(unsigned long data)
 146 {
 147         struct budget *budget = (struct budget *) data;
 148         u8 *mem = (u8 *) (budget->grabbing);
 149         u32 olddma = budget->ttbp;
 150         u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
 151         u32 count;
 152
 153         /* nearest lower position divisible by 188 */
 154         newdma -= newdma % 188;
 155
 156         if (newdma >= budget->buffer_size)
 157                 return;
 158
 159         budget->ttbp = newdma;
 160
 161         if (budget->feeding == 0 || newdma == olddma)
 162                 return;
 163
 164         if (newdma > olddma) {  /* no wraparound, dump olddma..newdma */
 165                 count = newdma - olddma;
 166                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 167         } else {                /* wraparound, dump olddma..buflen and 0..newdma */
 168                 count = budget->buffer_size - olddma;
 169                 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
 170                 count += newdma;
 171                 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
 172         }
 173
 174         if (count > budget->buffer_warning_threshold)
 175                 budget->buffer_warnings++;
 176
 177         if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
 178                 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
 179                         budget->dev->name, __FUNCTION__, budget->buffer_warnings, count);
 180                 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
 181                 budget->buffer_warnings = 0;
 182         }
 183 }
 184
 185
 186 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
 187                           int uselocks, int nobusyloop)
 188 {
 189         struct saa7146_dev *saa = budget->dev;
 190         int result = 0;
 191         unsigned long flags = 0;
 192
 193         if (count > 4 || count <= 0)
 194                 return 0;
 195
 196         if (uselocks)
 197                 spin_lock_irqsave(&budget->debilock, flags);
 198
 199         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 200                 if (uselocks)
 201                         spin_unlock_irqrestore(&budget->debilock, flags);
 202                 return result;
 203         }
 204
 205         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
 206         saa7146_write(saa, DEBI_CONFIG, config);
 207         saa7146_write(saa, DEBI_PAGE, 0);
 208         saa7146_write(saa, MC2, (2 << 16) | 2);
 209
 210         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 211                 if (uselocks)
 212                         spin_unlock_irqrestore(&budget->debilock, flags);
 213                 return result;
 214         }
 215
 216         result = saa7146_read(saa, DEBI_AD);
 217         result &= (0xffffffffUL >> ((4 - count) * 8));
 218
 219         if (uselocks)
 220                 spin_unlock_irqrestore(&budget->debilock, flags);
 221
 222         return result;
 223 }
 224
 225 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
 226                            int count, u32 value, int uselocks, int nobusyloop)
 227 {
 228         struct saa7146_dev *saa = budget->dev;
 229         unsigned long flags = 0;
 230         int result;
 231
 232         if (count > 4 || count <= 0)
 233                 return 0;
 234
 235         if (uselocks)
 236                 spin_lock_irqsave(&budget->debilock, flags);
 237
 238         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 239                 if (uselocks)
 240                         spin_unlock_irqrestore(&budget->debilock, flags);
 241                 return result;
 242         }
 243
 244         saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
 245         saa7146_write(saa, DEBI_CONFIG, config);
 246         saa7146_write(saa, DEBI_PAGE, 0);
 247         saa7146_write(saa, DEBI_AD, value);
 248         saa7146_write(saa, MC2, (2 << 16) | 2);
 249
 250         if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
 251                 if (uselocks)
 252                         spin_unlock_irqrestore(&budget->debilock, flags);
 253                 return result;
 254         }
 255
 256         if (uselocks)
 257                 spin_unlock_irqrestore(&budget->debilock, flags);
 258         return 0;
 259 }
 260
 261
 262 /****************************************************************************
 263  * DVB API SECTION
 264  ****************************************************************************/
 265
 266 static int budget_start_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         if (!demux->dmx.frontend)
 275                 return -EINVAL;
 276
 277         spin_lock(&budget->feedlock);
 278         feed->pusi_seen = 0; /* have a clean section start */
 279         status = start_ts_capture(budget);
 280         spin_unlock(&budget->feedlock);
 281         return status;
 282 }
 283
 284 static int budget_stop_feed(struct dvb_demux_feed *feed)
 285 {
 286         struct dvb_demux *demux = feed->demux;
 287         struct budget *budget = (struct budget *) demux->priv;
 288         int status;
 289
 290         dprintk(2, "budget: %p\n", budget);
 291
 292         spin_lock(&budget->feedlock);
 293         status = stop_ts_capture(budget);
 294         spin_unlock(&budget->feedlock);
 295         return status;
 296 }
 297
 298 static int budget_register(struct budget *budget)
 299 {
 300         struct dvb_demux *dvbdemux = &budget->demux;
 301         int ret;
 302
 303         dprintk(2, "budget: %p\n", budget);
 304
 305         dvbdemux->priv = (void *) budget;
 306
 307         dvbdemux->filternum = 256;
 308         dvbdemux->feednum = 256;
 309         dvbdemux->start_feed = budget_start_feed;
 310         dvbdemux->stop_feed = budget_stop_feed;
 311         dvbdemux->write_to_decoder = NULL;
 312
 313         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 314                                       DMX_MEMORY_BASED_FILTERING);
 315
 316         dvb_dmx_init(&budget->demux);
 317
 318         budget->dmxdev.filternum = 256;
 319         budget->dmxdev.demux = &dvbdemux->dmx;
 320         budget->dmxdev.capabilities = 0;
 321
 322         dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
 323
 324         budget->hw_frontend.source = DMX_FRONTEND_0;
 325
 326         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 327
 328         if (ret < 0)
 329                 return ret;
 330
 331         budget->mem_frontend.source = DMX_MEMORY_FE;
 332         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 333         if (ret < 0)
 334                 return ret;
 335
 336         ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 337         if (ret < 0)
 338                 return ret;
 339
 340         dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
 341
 342         return 0;
 343 }
 344
 345 static void budget_unregister(struct budget *budget)
 346 {
 347         struct dvb_demux *dvbdemux = &budget->demux;
 348
 349         dprintk(2, "budget: %p\n", budget);
 350
 351         dvb_net_release(&budget->dvb_net);
 352
 353         dvbdemux->dmx.close(&dvbdemux->dmx);
 354         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 355         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 356
 357         dvb_dmxdev_release(&budget->dmxdev);
 358         dvb_dmx_release(&budget->demux);
 359 }
 360
 361 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
 362                       struct saa7146_pci_extension_data *info,
 363                       struct module *owner)
 364 {
 365         int ret = 0;
 366         struct budget_info *bi = info->ext_priv;
 367         int max_bufsize;
 368         int height_mask;
 369
 370         memset(budget, 0, sizeof(struct budget));
 371
 372         dprintk(2, "dev: %p, budget: %p\n", dev, budget);
 373
 374         budget->card = bi;
 375         budget->dev = (struct saa7146_dev *) dev;
 376
 377         if (budget->card->type == BUDGET_FS_ACTIVY) {
 378                 budget->buffer_width = TS_WIDTH_ACTIVY;
 379                 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
 380                 height_mask = TS_HEIGHT_MASK_ACTIVY;
 381         } else {
 382                 budget->buffer_width = TS_WIDTH;
 383                 max_bufsize = TS_MAX_BUFSIZE_K;
 384                 height_mask = TS_HEIGHT_MASK;
 385         }
 386
 387         if (dma_buffer_size < TS_MIN_BUFSIZE_K)
 388                 dma_buffer_size = TS_MIN_BUFSIZE_K;
 389         else if (dma_buffer_size > max_bufsize)
 390                 dma_buffer_size = max_bufsize;
 391
 392         budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
 393         budget->buffer_height &= height_mask;
 394         budget->buffer_size = budget->buffer_height * budget->buffer_width;
 395         budget->buffer_warning_threshold = budget->buffer_size * 80/100;
 396         budget->buffer_warnings = 0;
 397         budget->buffer_warning_time = jiffies;
 398
 399         dprintk(2, "%s: width = %d, height = %d\n",
 400                 budget->dev->name, budget->buffer_width, budget->buffer_height);
 401         printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
 402
 403         if ((ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, owner, &budget->dev->pci->dev)) < 0) {
 404                 return ret;
 405         }
 406
 407         /* set dd1 stream a & b */
 408         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 409         saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 410         saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 411         saa7146_write(dev, DD1_INIT, 0x02000000);
 412         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 413
 414         if (bi->type != BUDGET_FS_ACTIVY)
 415                 budget->video_port = BUDGET_VIDEO_PORTB;
 416         else
 417                 budget->video_port = BUDGET_VIDEO_PORTA;
 418         spin_lock_init(&budget->feedlock);
 419         spin_lock_init(&budget->debilock);
 420
 421         /* the Siemens DVB needs this if you want to have the i2c chips
 422            get recognized before the main driver is loaded */
 423         if (bi->type != BUDGET_FS_ACTIVY)
 424                 saa7146_write(dev, GPIO_CTRL, 0x500000);        /* GPIO 3 = 1 */
 425
 426 #ifdef I2C_ADAP_CLASS_TV_DIGITAL
 427         budget->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL;
 428 #else
 429         budget->i2c_adap.class = I2C_CLASS_TV_DIGITAL;
 430 #endif
 431
 432         strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
 433
 434         saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
 435         strcpy(budget->i2c_adap.name, budget->card->name);
 436
 437         if (i2c_add_adapter(&budget->i2c_adap) < 0) {
 438                 dvb_unregister_adapter(&budget->dvb_adapter);
 439                 return -ENOMEM;
 440         }
 441
 442         ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
 443
 444         if (NULL ==
 445             (budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt))) {
 446                 ret = -ENOMEM;
 447                 goto err;
 448         }
 449
 450         saa7146_write(dev, PCI_BT_V1, 0x001c0000);
 451         /* upload all */
 452         saa7146_write(dev, GPIO_CTRL, 0x000000);
 453
 454         tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
 455
 456         /* frontend power on */
 457         if (bi->type != BUDGET_FS_ACTIVY)
 458                 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 459
 460         if (budget_register(budget) == 0) {
 461                 return 0;
 462         }
 463 err:
 464         i2c_del_adapter(&budget->i2c_adap);
 465
 466         vfree(budget->grabbing);
 467
 468         dvb_unregister_adapter(&budget->dvb_adapter);
 469
 470         return ret;
 471 }
 472
 473 int ttpci_budget_deinit(struct budget *budget)
 474 {
 475         struct saa7146_dev *dev = budget->dev;
 476
 477         dprintk(2, "budget: %p\n", budget);
 478
 479         budget_unregister(budget);
 480
 481         i2c_del_adapter(&budget->i2c_adap);
 482
 483         dvb_unregister_adapter(&budget->dvb_adapter);
 484
 485         tasklet_kill(&budget->vpe_tasklet);
 486
 487         saa7146_pgtable_free(dev->pci, &budget->pt);
 488
 489         vfree(budget->grabbing);
 490
 491         return 0;
 492 }
 493
 494 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
 495 {
 496         struct budget *budget = (struct budget *) dev->ext_priv;
 497
 498         dprintk(8, "dev: %p, budget: %p\n", dev, budget);
 499
 500         if (*isr & MASK_10)
 501                 tasklet_schedule(&budget->vpe_tasklet);
 502 }
 503
 504 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
 505 {
 506         struct budget *budget = (struct budget *) dev->ext_priv;
 507
 508         spin_lock(&budget->feedlock);
 509         budget->video_port = video_port;
 510         if (budget->feeding) {
 511                 int oldfeeding = budget->feeding;
 512                 budget->feeding = 1;
 513                 stop_ts_capture(budget);
 514                 start_ts_capture(budget);
 515                 budget->feeding = oldfeeding;
 516         }
 517         spin_unlock(&budget->feedlock);
 518 }
 519
 520 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
 521 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
 522 EXPORT_SYMBOL_GPL(ttpci_budget_init);
 523 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
 524 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
 525 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
 526 EXPORT_SYMBOL_GPL(budget_debug);
 527
 528 MODULE_LICENSE("GPL");