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 "budget.h"
  38 #include "ttpci-eeprom.h"
  39
  40 int budget_debug = 0;
  41
  42 /****************************************************************************
  43  * TT budget / WinTV Nova
  44  ****************************************************************************/
  45
  46 static int stop_ts_capture(struct budget *budget)
  47 {
  48         DEB_EE(("budget: %p\n",budget));
  49
  50         if (--budget->feeding)
  51                 return budget->feeding;
  52
  53         saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off
  54         IER_DISABLE(budget->dev, MASK_10);
  55         return 0;
  56 }
  57
  58
  59 static int start_ts_capture (struct budget *budget)
  60 {
  61         struct saa7146_dev *dev=budget->dev;
  62
  63         DEB_EE(("budget: %p\n",budget));
  64
  65         if (budget->feeding)
  66                 return ++budget->feeding;
  67
  68         saa7146_write(dev, MC1, MASK_20); // DMA3 off
  69
  70         memset(budget->grabbing, 0x00, TS_HEIGHT*TS_WIDTH);
  71
  72         saa7146_write(dev, PCI_BT_V1, 0x001c0000 |
  73             (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
  74
  75         budget->tsf=0xff;
  76         budget->ttbp=0;
  77
  78         /*
  79          *  Signal path on the Activy:
  80          *
  81          *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
  82          *
  83          *  Since the tuner feeds 204 bytes packets into the SAA7146,
  84          *  DMA3 is configured to strip the trailing 16 FEC bytes:
  85          *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
  86          */
  87
  88         if (budget->card->type == BUDGET_FS_ACTIVY) {
  89                 saa7146_write(dev, DD1_INIT, 0x04000000);
  90                 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
  91                 saa7146_write(dev, BRS_CTRL, 0x00000000);
  92         } else {
  93                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
  94                         saa7146_write(dev, DD1_INIT, 0x06000200);
  95                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
  96                         saa7146_write(dev, BRS_CTRL, 0x00000000);
  97                 } else {
  98         saa7146_write(dev, DD1_INIT, 0x02000600);
  99         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 100         saa7146_write(dev, BRS_CTRL, 0x60000000);
 101                 }
 102         }
 103
 104         saa7146_write(dev, MC2, (MASK_08 | MASK_24));
 105         mdelay(10);
 106
 107         saa7146_write(dev, BASE_ODD3, 0);
 108         saa7146_write(dev, BASE_EVEN3, 0);
 109         saa7146_write(dev, PROT_ADDR3, TS_WIDTH*TS_HEIGHT);
 110         saa7146_write(dev, BASE_PAGE3, budget->pt.dma |ME1|0x90);
 111
 112         if (budget->card->type == BUDGET_FS_ACTIVY) {
 113                 saa7146_write(dev, PITCH3, TS_WIDTH/2);
 114                 saa7146_write(dev, NUM_LINE_BYTE3, ((TS_HEIGHT*2)<<16)|(TS_WIDTH/2));
 115         } else {
 116                 saa7146_write(dev, PITCH3, TS_WIDTH);
 117         saa7146_write(dev, NUM_LINE_BYTE3, (TS_HEIGHT<<16)|TS_WIDTH);
 118         }
 119
 120         saa7146_write(dev, MC2, (MASK_04 | MASK_20));
 121         saa7146_write(dev, MC1, (MASK_04 | MASK_20)); // DMA3 on
 122
 123         IER_ENABLE(budget->dev, MASK_10); // VPE
 124
 125         return ++budget->feeding;
 126 }
 127
 128
 129 static void vpeirq (unsigned long data)
 130 {
 131         struct budget *budget = (struct budget*) data;
 132         u8 *mem = (u8 *)(budget->grabbing);
 133         u32 olddma = budget->ttbp;
 134         u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
 135
 136         /* nearest lower position divisible by 188 */
 137         newdma -= newdma % 188;
 138
 139         if (newdma >= TS_BUFLEN)
 140                 return;
 141
 142         budget->ttbp = newdma;
 143
 144         if(budget->feeding == 0 || newdma == olddma)
 145                 return;
 146
 147         if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
 148                         dvb_dmx_swfilter_packets(&budget->demux,
 149                                 mem+olddma, (newdma-olddma) / 188);
 150         } else { /* wraparound, dump olddma..buflen and 0..newdma */
 151                         dvb_dmx_swfilter_packets(&budget->demux,
 152                                 mem+olddma, (TS_BUFLEN-olddma) / 188);
 153                         dvb_dmx_swfilter_packets(&budget->demux,
 154                                 mem, newdma / 188);
 155         }
 156 }
 157
 158
 159 /****************************************************************************
 160  * DVB API SECTION
 161  ****************************************************************************/
 162
 163 static int budget_start_feed(struct dvb_demux_feed *feed)
 164 {
 165         struct dvb_demux *demux = feed->demux;
 166         struct budget *budget = (struct budget*) demux->priv;
 167         int status;
 168
 169         DEB_EE(("budget: %p\n",budget));
 170
 171         if (!demux->dmx.frontend)
 172                 return -EINVAL;
 173
 174         spin_lock(&budget->feedlock);
 175         status = start_ts_capture (budget);
 176         spin_unlock(&budget->feedlock);
 177         return status;
 178 }
 179
 180 static int budget_stop_feed(struct dvb_demux_feed *feed)
 181 {
 182         struct dvb_demux *demux = feed->demux;
 183         struct budget *budget = (struct budget *) demux->priv;
 184         int status;
 185
 186         DEB_EE(("budget: %p\n",budget));
 187
 188         spin_lock(&budget->feedlock);
 189         status = stop_ts_capture (budget);
 190         spin_unlock(&budget->feedlock);
 191         return status;
 192 }
 193
 194
 195 static int budget_register(struct budget *budget)
 196 {
 197         struct dvb_demux *dvbdemux=&budget->demux;
 198         int ret;
 199
 200         DEB_EE(("budget: %p\n",budget));
 201
 202         dvbdemux->priv = (void *) budget;
 203
 204         dvbdemux->filternum = 256;
 205         dvbdemux->feednum = 256;
 206         dvbdemux->start_feed = budget_start_feed;
 207         dvbdemux->stop_feed = budget_stop_feed;
 208         dvbdemux->write_to_decoder = NULL;
 209
 210         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 211                                       DMX_MEMORY_BASED_FILTERING);
 212
 213         dvb_dmx_init(&budget->demux);
 214
 215         budget->dmxdev.filternum = 256;
 216         budget->dmxdev.demux = &dvbdemux->dmx;
 217         budget->dmxdev.capabilities = 0;
 218
 219         dvb_dmxdev_init(&budget->dmxdev, budget->dvb_adapter);
 220
 221         budget->hw_frontend.source = DMX_FRONTEND_0;
 222
 223         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 224
 225         if (ret < 0)
 226                 return ret;
 227
 228         budget->mem_frontend.source = DMX_MEMORY_FE;
 229         ret=dvbdemux->dmx.add_frontend (&dvbdemux->dmx,
 230                                         &budget->mem_frontend);
 231         if (ret<0)
 232                 return ret;
 233
 234         ret=dvbdemux->dmx.connect_frontend (&dvbdemux->dmx,
 235                                             &budget->hw_frontend);
 236         if (ret < 0)
 237                 return ret;
 238
 239         dvb_net_init(budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
 240
 241         return 0;
 242 }
 243
 244
 245 static void budget_unregister(struct budget *budget)
 246 {
 247         struct dvb_demux *dvbdemux=&budget->demux;
 248
 249         DEB_EE(("budget: %p\n",budget));
 250
 251         dvb_net_release(&budget->dvb_net);
 252
 253         dvbdemux->dmx.close(&dvbdemux->dmx);
 254         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 255         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 256
 257         dvb_dmxdev_release(&budget->dmxdev);
 258         dvb_dmx_release(&budget->demux);
 259 }
 260
 261
 262 static int master_xfer (struct dvb_i2c_bus *i2c, const struct i2c_msg msgs[], int num)
 263 {
 264         struct saa7146_dev *dev = i2c->data;
 265         return saa7146_i2c_transfer(dev, msgs, num, 6);
 266 }
 267
 268
 269 int ttpci_budget_init (struct budget *budget,
 270                        struct saa7146_dev* dev,
 271                        struct saa7146_pci_extension_data *info)
 272 {
 273         int length = TS_WIDTH*TS_HEIGHT;
 274         int ret = 0;
 275         struct budget_info *bi = info->ext_priv;
 276
 277         memset(budget, 0, sizeof(struct budget));
 278
 279         DEB_EE(("dev: %p, budget: %p\n", dev, budget));
 280
 281         budget->card = bi;
 282         budget->dev = (struct saa7146_dev *) dev;
 283
 284         dvb_register_adapter(&budget->dvb_adapter, budget->card->name, THIS_MODULE);
 285
 286         /* set dd1 stream a & b */
 287         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 288         saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 289         saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 290         saa7146_write(dev, DD1_INIT, 0x02000000);
 291         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 292
 293         if (bi->type != BUDGET_FS_ACTIVY)
 294                 budget->video_port = BUDGET_VIDEO_PORTB;
 295         else
 296                 budget->video_port = BUDGET_VIDEO_PORTA;
 297         spin_lock_init(&budget->feedlock);
 298
 299         /* the Siemens DVB needs this if you want to have the i2c chips
 300            get recognized before the main driver is loaded */
 301         if (bi->type != BUDGET_FS_ACTIVY)
 302                 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
 303
 304         saa7146_i2c_adapter_prepare(dev, NULL, 0, SAA7146_I2C_BUS_BIT_RATE_120);
 305
 306         budget->i2c_bus = dvb_register_i2c_bus (master_xfer, dev,
 307                                                 budget->dvb_adapter, 0);
 308
 309         if (!budget->i2c_bus) {
 310                 dvb_unregister_adapter (budget->dvb_adapter);
 311                 return -ENOMEM;
 312         }
 313
 314         ttpci_eeprom_parse_mac(budget->i2c_bus);
 315
 316         if( NULL == (budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci,length,&budget->pt))) {
 317                 ret = -ENOMEM;
 318                 goto err;
 319         }
 320
 321         saa7146_write(dev, PCI_BT_V1, 0x001c0000);
 322         /* upload all */
 323         saa7146_write(dev, GPIO_CTRL, 0x000000);
 324
 325         tasklet_init (&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
 326
 327         /* frontend power on */
 328         if (bi->type == BUDGET_FS_ACTIVY)
 329                 saa7146_setgpio(dev, 1, SAA7146_GPIO_OUTHI);
 330         else
 331                 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 332
 333         if (budget_register(budget) == 0) {
 334                 return 0;
 335         }
 336 err:
 337         if (budget->grabbing)
 338                 vfree(budget->grabbing);
 339
 340         dvb_unregister_i2c_bus (master_xfer,budget->i2c_bus->adapter,
 341                                 budget->i2c_bus->id);
 342
 343         dvb_unregister_adapter (budget->dvb_adapter);
 344
 345         return ret;
 346 }
 347
 348
 349 int ttpci_budget_deinit (struct budget *budget)
 350 {
 351         struct saa7146_dev *dev = budget->dev;
 352
 353         DEB_EE(("budget: %p\n", budget));
 354
 355         budget_unregister (budget);
 356
 357         dvb_unregister_i2c_bus (master_xfer, budget->i2c_bus->adapter,
 358                                 budget->i2c_bus->id);
 359
 360         dvb_unregister_adapter (budget->dvb_adapter);
 361
 362         tasklet_kill (&budget->vpe_tasklet);
 363
 364         saa7146_pgtable_free (dev->pci, &budget->pt);
 365
 366         vfree (budget->grabbing);
 367
 368         return 0;
 369 }
 370
 371 void ttpci_budget_irq10_handler (struct saa7146_dev* dev, u32 *isr)
 372 {
 373         struct budget *budget = (struct budget*)dev->ext_priv;
 374
 375         DEB_EE(("dev: %p, budget: %p\n",dev,budget));
 376
 377         if (*isr & MASK_10)
 378                 tasklet_schedule (&budget->vpe_tasklet);
 379 }
 380
 381 void ttpci_budget_set_video_port(struct saa7146_dev* dev, int video_port)
 382 {
 383         struct budget *budget = (struct budget*)dev->ext_priv;
 384
 385         spin_lock(&budget->feedlock);
 386         budget->video_port = video_port;
 387         if (budget->feeding) {
 388                 int oldfeeding = budget->feeding;
 389                 budget->feeding = 1;
 390                 stop_ts_capture(budget);
 391                 start_ts_capture(budget);
 392                 budget->feeding = oldfeeding;
 393         }
 394         spin_unlock(&budget->feedlock);
 395 }
 396
 397
 398
 399 EXPORT_SYMBOL_GPL(ttpci_budget_init);
 400 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
 401 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
 402 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
 403 EXPORT_SYMBOL_GPL(budget_debug);
 404
 405 MODULE_PARM(budget_debug,"i");
 406 MODULE_LICENSE("GPL");
 407
 408