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         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 |
  78             (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
  79
  80         budget->tsf=0xff;
  81         budget->ttbp=0;
  82
  83         /*
  84          *  Signal path on the Activy:
  85          *
  86          *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
  87          *
  88          *  Since the tuner feeds 204 bytes packets into the SAA7146,
  89          *  DMA3 is configured to strip the trailing 16 FEC bytes:
  90          *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
  91          */
  92
  93         if (budget->card->type == 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         } else {
  98                 if (budget->video_port == BUDGET_VIDEO_PORTA) {
  99                         saa7146_write(dev, DD1_INIT, 0x06000200);
 100                         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 101                         saa7146_write(dev, BRS_CTRL, 0x00000000);
 102                 } else {
 103         saa7146_write(dev, DD1_INIT, 0x02000600);
 104         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 105         saa7146_write(dev, BRS_CTRL, 0x60000000);
 106                 }
 107         }
 108
 109         saa7146_write(dev, MC2, (MASK_08 | MASK_24));
 110         mdelay(10);
 111
 112         saa7146_write(dev, BASE_ODD3, 0);
 113         saa7146_write(dev, BASE_EVEN3, 0);
 114         saa7146_write(dev, PROT_ADDR3, TS_WIDTH*TS_HEIGHT);
 115         saa7146_write(dev, BASE_PAGE3, budget->pt.dma |ME1|0x90);
 116
 117         if (budget->card->type == BUDGET_FS_ACTIVY) {
 118                 saa7146_write(dev, PITCH3, TS_WIDTH/2);
 119                 saa7146_write(dev, NUM_LINE_BYTE3, ((TS_HEIGHT*2)<<16)|(TS_WIDTH/2));
 120         } else {
 121                 saa7146_write(dev, PITCH3, TS_WIDTH);
 122         saa7146_write(dev, NUM_LINE_BYTE3, (TS_HEIGHT<<16)|TS_WIDTH);
 123         }
 124
 125         saa7146_write(dev, MC2, (MASK_04 | MASK_20));
 126         saa7146_write(dev, MC1, (MASK_04 | MASK_20)); // DMA3 on
 127
 128         IER_ENABLE(budget->dev, MASK_10); // VPE
 129
 130         return ++budget->feeding;
 131 }
 132
 133
 134 static void vpeirq (unsigned long data)
 135 {
 136         struct budget *budget = (struct budget*) data;
 137         u8 *mem = (u8 *)(budget->grabbing);
 138         u32 olddma = budget->ttbp;
 139         u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
 140
 141         /* nearest lower position divisible by 188 */
 142         newdma -= newdma % 188;
 143
 144         if (newdma >= TS_BUFLEN)
 145                 return;
 146
 147         budget->ttbp = newdma;
 148
 149         if(budget->feeding == 0 || newdma == olddma)
 150                 return;
 151
 152         if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
 153                         dvb_dmx_swfilter_packets(&budget->demux,
 154                                 mem+olddma, (newdma-olddma) / 188);
 155         } else { /* wraparound, dump olddma..buflen and 0..newdma */
 156                         dvb_dmx_swfilter_packets(&budget->demux,
 157                                 mem+olddma, (TS_BUFLEN-olddma) / 188);
 158                         dvb_dmx_swfilter_packets(&budget->demux,
 159                                 mem, newdma / 188);
 160         }
 161 }
 162
 163
 164 /****************************************************************************
 165  * DVB API SECTION
 166  ****************************************************************************/
 167
 168 static int budget_start_feed(struct dvb_demux_feed *feed)
 169 {
 170         struct dvb_demux *demux = feed->demux;
 171         struct budget *budget = (struct budget*) demux->priv;
 172         int status;
 173
 174         dprintk(2, "budget: %p\n", budget);
 175
 176         if (!demux->dmx.frontend)
 177                 return -EINVAL;
 178
 179         spin_lock(&budget->feedlock);
 180         status = start_ts_capture (budget);
 181         spin_unlock(&budget->feedlock);
 182         return status;
 183 }
 184
 185 static int budget_stop_feed(struct dvb_demux_feed *feed)
 186 {
 187         struct dvb_demux *demux = feed->demux;
 188         struct budget *budget = (struct budget *) demux->priv;
 189         int status;
 190
 191         dprintk(2, "budget: %p\n", budget);
 192
 193         spin_lock(&budget->feedlock);
 194         status = stop_ts_capture (budget);
 195         spin_unlock(&budget->feedlock);
 196         return status;
 197 }
 198
 199
 200 static int budget_register(struct budget *budget)
 201 {
 202         struct dvb_demux *dvbdemux=&budget->demux;
 203         int ret;
 204
 205         dprintk(2, "budget: %p\n", budget);
 206
 207         dvbdemux->priv = (void *) budget;
 208
 209         dvbdemux->filternum = 256;
 210         dvbdemux->feednum = 256;
 211         dvbdemux->start_feed = budget_start_feed;
 212         dvbdemux->stop_feed = budget_stop_feed;
 213         dvbdemux->write_to_decoder = NULL;
 214
 215         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 216                                       DMX_MEMORY_BASED_FILTERING);
 217
 218         dvb_dmx_init(&budget->demux);
 219
 220         budget->dmxdev.filternum = 256;
 221         budget->dmxdev.demux = &dvbdemux->dmx;
 222         budget->dmxdev.capabilities = 0;
 223
 224         dvb_dmxdev_init(&budget->dmxdev, budget->dvb_adapter);
 225
 226         budget->hw_frontend.source = DMX_FRONTEND_0;
 227
 228         ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 229
 230         if (ret < 0)
 231                 return ret;
 232
 233         budget->mem_frontend.source = DMX_MEMORY_FE;
 234         ret=dvbdemux->dmx.add_frontend (&dvbdemux->dmx,
 235                                         &budget->mem_frontend);
 236         if (ret<0)
 237                 return ret;
 238
 239         ret=dvbdemux->dmx.connect_frontend (&dvbdemux->dmx,
 240                                             &budget->hw_frontend);
 241         if (ret < 0)
 242                 return ret;
 243
 244         dvb_net_init(budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
 245
 246         return 0;
 247 }
 248
 249
 250 static void budget_unregister(struct budget *budget)
 251 {
 252         struct dvb_demux *dvbdemux=&budget->demux;
 253
 254         dprintk(2, "budget: %p\n", budget);
 255
 256         dvb_net_release(&budget->dvb_net);
 257
 258         dvbdemux->dmx.close(&dvbdemux->dmx);
 259         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
 260         dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
 261
 262         dvb_dmxdev_release(&budget->dmxdev);
 263         dvb_dmx_release(&budget->demux);
 264 }
 265
 266 /* fixme: can this be unified among all saa7146 based dvb cards? */
 267 static int client_register(struct i2c_client *client)
 268 {
 269         struct saa7146_dev *dev = (struct saa7146_dev*)i2c_get_adapdata(client->adapter);
 270         struct budget *budget = (struct budget*)dev->ext_priv;
 271
 272         if (client->driver->command)
 273                 return client->driver->command(client, FE_REGISTER, budget->dvb_adapter);
 274         return 0;
 275 }
 276
 277 static int client_unregister(struct i2c_client *client)
 278 {
 279         struct saa7146_dev *dev = (struct saa7146_dev*)i2c_get_adapdata(client->adapter);
 280         struct budget *budget = (struct budget*)dev->ext_priv;
 281
 282         if (client->driver->command)
 283                 return client->driver->command(client, FE_UNREGISTER, budget->dvb_adapter);
 284         return 0;
 285 }
 286
 287 int ttpci_budget_init (struct budget *budget,
 288                        struct saa7146_dev* dev,
 289                        struct saa7146_pci_extension_data *info)
 290 {
 291         int length = TS_WIDTH*TS_HEIGHT;
 292         int ret = 0;
 293         struct budget_info *bi = info->ext_priv;
 294
 295         memset(budget, 0, sizeof(struct budget));
 296
 297         dprintk(2, "dev: %p, budget: %p\n", dev, budget);
 298
 299         budget->card = bi;
 300         budget->dev = (struct saa7146_dev *) dev;
 301
 302         dvb_register_adapter(&budget->dvb_adapter, budget->card->name, THIS_MODULE);
 303
 304         /* set dd1 stream a & b */
 305         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 306         saa7146_write(dev, MC2, (MASK_09 | MASK_25));
 307         saa7146_write(dev, MC2, (MASK_10 | MASK_26));
 308         saa7146_write(dev, DD1_INIT, 0x02000000);
 309         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 310
 311         if (bi->type != BUDGET_FS_ACTIVY)
 312                 budget->video_port = BUDGET_VIDEO_PORTB;
 313         else
 314                 budget->video_port = BUDGET_VIDEO_PORTA;
 315         spin_lock_init(&budget->feedlock);
 316
 317         /* the Siemens DVB needs this if you want to have the i2c chips
 318            get recognized before the main driver is loaded */
 319         if (bi->type != BUDGET_FS_ACTIVY)
 320                 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
 321
 322         budget->i2c_adap = (struct i2c_adapter) {
 323                 .client_register = client_register,
 324                 .client_unregister = client_unregister,
 325 #ifdef I2C_ADAP_CLASS_TV_DIGITAL
 326                 .class = I2C_ADAP_CLASS_TV_DIGITAL,
 327 #else
 328                 .class = I2C_CLASS_TV_DIGITAL,
 329 #endif
 330         };
 331
 332         strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
 333
 334         saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
 335         strcpy(budget->i2c_adap.name, budget->card->name);
 336
 337         if (i2c_add_adapter(&budget->i2c_adap) < 0) {
 338                 dvb_unregister_adapter (budget->dvb_adapter);
 339                 return -ENOMEM;
 340         }
 341
 342         ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter->proposed_mac);
 343
 344         if( NULL == (budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci,length,&budget->pt))) {
 345                 ret = -ENOMEM;
 346                 goto err;
 347         }
 348
 349         saa7146_write(dev, PCI_BT_V1, 0x001c0000);
 350         /* upload all */
 351         saa7146_write(dev, GPIO_CTRL, 0x000000);
 352
 353         tasklet_init (&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
 354
 355         /* frontend power on */
 356         if (bi->type == BUDGET_FS_ACTIVY)
 357                 saa7146_setgpio(dev, 1, SAA7146_GPIO_OUTHI);
 358         else
 359                 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 360
 361         if (budget_register(budget) == 0) {
 362                 return 0;
 363         }
 364 err:
 365         i2c_del_adapter(&budget->i2c_adap);
 366
 367         if (budget->grabbing)
 368                 vfree(budget->grabbing);
 369
 370         dvb_unregister_adapter (budget->dvb_adapter);
 371
 372         return ret;
 373 }
 374
 375
 376 int ttpci_budget_deinit (struct budget *budget)
 377 {
 378         struct saa7146_dev *dev = budget->dev;
 379
 380         dprintk(2, "budget: %p\n", budget);
 381
 382         budget_unregister (budget);
 383
 384         i2c_del_adapter(&budget->i2c_adap);
 385
 386         dvb_unregister_adapter (budget->dvb_adapter);
 387
 388         tasklet_kill (&budget->vpe_tasklet);
 389
 390         saa7146_pgtable_free (dev->pci, &budget->pt);
 391
 392         vfree (budget->grabbing);
 393
 394         return 0;
 395 }
 396
 397 void ttpci_budget_irq10_handler (struct saa7146_dev* dev, u32 *isr)
 398 {
 399         struct budget *budget = (struct budget*)dev->ext_priv;
 400
 401         dprintk(8, "dev: %p, budget: %p\n",dev,budget);
 402
 403         if (*isr & MASK_10)
 404                 tasklet_schedule (&budget->vpe_tasklet);
 405 }
 406
 407 void ttpci_budget_set_video_port(struct saa7146_dev* dev, int video_port)
 408 {
 409         struct budget *budget = (struct budget*)dev->ext_priv;
 410
 411         spin_lock(&budget->feedlock);
 412         budget->video_port = video_port;
 413         if (budget->feeding) {
 414                 int oldfeeding = budget->feeding;
 415                 budget->feeding = 1;
 416                 stop_ts_capture(budget);
 417                 start_ts_capture(budget);
 418                 budget->feeding = oldfeeding;
 419         }
 420         spin_unlock(&budget->feedlock);
 421 }
 422
 423
 424
 425 EXPORT_SYMBOL_GPL(ttpci_budget_init);
 426 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
 427 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
 428 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
 429 EXPORT_SYMBOL_GPL(budget_debug);
 430
 431 MODULE_LICENSE("GPL");
 432