git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/em28xx/em28xx-dvb.c

   1 /*
   2  DVB device driver for em28xx
   3
   4  (c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>
   5
   6  (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
   7         - Fixes for the driver to properly work with HVR-950
   8         - Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
   9         - Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
  10
  11  (c) 2008 Aidan Thornton <makosoft@googlemail.com>
  12
  13  Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
  14         (c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
  15         (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
  16
  17  This program is free software; you can redistribute it and/or modify
  18  it under the terms of the GNU General Public License as published by
  19  the Free Software Foundation; either version 2 of the License.
  20  */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/usb.h>
  24
  25 #include "em28xx.h"
  26 #include <media/v4l2-common.h>
  27 #include <media/videobuf-vmalloc.h>
  28
  29 #include "lgdt330x.h"
  30 #include "zl10353.h"
  31 #include "s5h1409.h"
  32
  33 MODULE_DESCRIPTION("driver for em28xx based DVB cards");
  34 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
  35 MODULE_LICENSE("GPL");
  36
  37 static unsigned int debug;
  38 module_param(debug, int, 0644);
  39 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
  40
  41 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  42
  43 #define dprintk(level, fmt, arg...) do {                        \
  44 if (debug >= level)                                             \
  45         printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
  46 } while (0)
  47
  48 #define EM28XX_DVB_NUM_BUFS 5
  49 #define EM28XX_DVB_MAX_PACKETSIZE 564
  50 #define EM28XX_DVB_MAX_PACKETS 64
  51
  52 struct em28xx_dvb {
  53         struct dvb_frontend        *frontend;
  54
  55         /* feed count management */
  56         struct mutex               lock;
  57         int                        nfeeds;
  58
  59         /* general boilerplate stuff */
  60         struct dvb_adapter         adapter;
  61         struct dvb_demux           demux;
  62         struct dmxdev              dmxdev;
  63         struct dmx_frontend        fe_hw;
  64         struct dmx_frontend        fe_mem;
  65         struct dvb_net             net;
  66 };
  67
  68
  69 static inline void print_err_status(struct em28xx *dev,
  70                                      int packet, int status)
  71 {
  72         char *errmsg = "Unknown";
  73
  74         switch (status) {
  75         case -ENOENT:
  76                 errmsg = "unlinked synchronuously";
  77                 break;
  78         case -ECONNRESET:
  79                 errmsg = "unlinked asynchronuously";
  80                 break;
  81         case -ENOSR:
  82                 errmsg = "Buffer error (overrun)";
  83                 break;
  84         case -EPIPE:
  85                 errmsg = "Stalled (device not responding)";
  86                 break;
  87         case -EOVERFLOW:
  88                 errmsg = "Babble (bad cable?)";
  89                 break;
  90         case -EPROTO:
  91                 errmsg = "Bit-stuff error (bad cable?)";
  92                 break;
  93         case -EILSEQ:
  94                 errmsg = "CRC/Timeout (could be anything)";
  95                 break;
  96         case -ETIME:
  97                 errmsg = "Device does not respond";
  98                 break;
  99         }
 100         if (packet < 0) {
 101                 dprintk(1, "URB status %d [%s].\n", status, errmsg);
 102         } else {
 103                 dprintk(1, "URB packet %d, status %d [%s].\n",
 104                         packet, status, errmsg);
 105         }
 106 }
 107
 108 static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
 109 {
 110         int i;
 111
 112         if (!dev)
 113                 return 0;
 114
 115         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 116                 return 0;
 117
 118         if (urb->status < 0) {
 119                 print_err_status(dev, -1, urb->status);
 120                 if (urb->status == -ENOENT)
 121                         return 0;
 122         }
 123
 124         for (i = 0; i < urb->number_of_packets; i++) {
 125                 int status = urb->iso_frame_desc[i].status;
 126
 127                 if (status < 0) {
 128                         print_err_status(dev, i, status);
 129                         if (urb->iso_frame_desc[i].status != -EPROTO)
 130                                 continue;
 131                 }
 132
 133                 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
 134                                  urb->iso_frame_desc[i].offset,
 135                                  urb->iso_frame_desc[i].actual_length);
 136         }
 137
 138         return 0;
 139 }
 140
 141 static int start_streaming(struct em28xx_dvb *dvb)
 142 {
 143         int rc;
 144         struct em28xx *dev = dvb->adapter.priv;
 145
 146         usb_set_interface(dev->udev, 0, 1);
 147         rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 148         if (rc < 0)
 149                 return rc;
 150
 151         return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
 152                                 EM28XX_DVB_NUM_BUFS, EM28XX_DVB_MAX_PACKETSIZE,
 153                                 dvb_isoc_copy);
 154 }
 155
 156 static int stop_streaming(struct em28xx_dvb *dvb)
 157 {
 158         struct em28xx *dev = dvb->adapter.priv;
 159
 160         em28xx_uninit_isoc(dev);
 161
 162         em28xx_set_mode(dev, EM28XX_SUSPEND);
 163
 164         return 0;
 165 }
 166
 167 static int start_feed(struct dvb_demux_feed *feed)
 168 {
 169         struct dvb_demux *demux  = feed->demux;
 170         struct em28xx_dvb *dvb = demux->priv;
 171         int rc, ret;
 172
 173         if (!demux->dmx.frontend)
 174                 return -EINVAL;
 175
 176         mutex_lock(&dvb->lock);
 177         dvb->nfeeds++;
 178         rc = dvb->nfeeds;
 179
 180         if (dvb->nfeeds == 1) {
 181                 ret = start_streaming(dvb);
 182                 if (ret < 0)
 183                         rc = ret;
 184         }
 185
 186         mutex_unlock(&dvb->lock);
 187         return rc;
 188 }
 189
 190 static int stop_feed(struct dvb_demux_feed *feed)
 191 {
 192         struct dvb_demux *demux  = feed->demux;
 193         struct em28xx_dvb *dvb = demux->priv;
 194         int err = 0;
 195
 196         mutex_lock(&dvb->lock);
 197         dvb->nfeeds--;
 198
 199         if (0 == dvb->nfeeds)
 200                 err = stop_streaming(dvb);
 201
 202         mutex_unlock(&dvb->lock);
 203         return err;
 204 }
 205
 206
 207
 208 /* ------------------------------------------------------------------ */
 209 static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
 210 {
 211         struct em28xx *dev = fe->dvb->priv;
 212
 213         if (acquire)
 214                 return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 215         else
 216                 return em28xx_set_mode(dev, EM28XX_SUSPEND);
 217 }
 218
 219 /* ------------------------------------------------------------------ */
 220
 221 static struct lgdt330x_config em2880_lgdt3303_dev = {
 222         .demod_address = 0x0e,
 223         .demod_chip = LGDT3303,
 224 };
 225
 226 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
 227         .demod_address = (0x1e >> 1),
 228         .no_tuner = 1,
 229         .parallel_ts = 1,
 230         .if2 = 45600,
 231 };
 232
 233 static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
 234         .demod_address = 0x32 >> 1,
 235         .output_mode   = S5H1409_PARALLEL_OUTPUT,
 236         .gpio          = S5H1409_GPIO_OFF,
 237         .inversion     = S5H1409_INVERSION_OFF,
 238         .status_mode   = S5H1409_DEMODLOCKING,
 239         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
 240 };
 241
 242 #ifdef EM28XX_DRX397XD_SUPPORT
 243 /* [TODO] djh - not sure yet what the device config needs to contain */
 244 static struct drx397xD_config em28xx_drx397xD_with_xc3028 = {
 245         .demod_address = (0xe0 >> 1),
 246 };
 247 #endif
 248
 249 /* ------------------------------------------------------------------ */
 250
 251 static int attach_xc3028(u8 addr, struct em28xx *dev)
 252 {
 253         struct dvb_frontend *fe;
 254         struct xc2028_config cfg;
 255
 256         memset(&cfg, 0, sizeof(cfg));
 257         cfg.i2c_adap  = &dev->i2c_adap;
 258         cfg.i2c_addr  = addr;
 259
 260         if (!dev->dvb->frontend) {
 261                 printk(KERN_ERR "%s/2: dvb frontend not attached. "
 262                                 "Can't attach xc3028\n",
 263                        dev->name);
 264                 return -EINVAL;
 265         }
 266
 267         fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
 268         if (!fe) {
 269                 printk(KERN_ERR "%s/2: xc3028 attach failed\n",
 270                        dev->name);
 271                 dvb_frontend_detach(dev->dvb->frontend);
 272                 dev->dvb->frontend = NULL;
 273                 return -EINVAL;
 274         }
 275
 276         printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
 277
 278         return 0;
 279 }
 280
 281 /* ------------------------------------------------------------------ */
 282
 283 static int register_dvb(struct em28xx_dvb *dvb,
 284                  struct module *module,
 285                  struct em28xx *dev,
 286                  struct device *device)
 287 {
 288         int result;
 289
 290         mutex_init(&dvb->lock);
 291
 292         /* register adapter */
 293         result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
 294                                       adapter_nr);
 295         if (result < 0) {
 296                 printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
 297                        dev->name, result);
 298                 goto fail_adapter;
 299         }
 300
 301         /* Ensure all frontends negotiate bus access */
 302         dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
 303
 304         dvb->adapter.priv = dev;
 305
 306         /* register frontend */
 307         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 308         if (result < 0) {
 309                 printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
 310                        dev->name, result);
 311                 goto fail_frontend;
 312         }
 313
 314         /* register demux stuff */
 315         dvb->demux.dmx.capabilities =
 316                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 317                 DMX_MEMORY_BASED_FILTERING;
 318         dvb->demux.priv       = dvb;
 319         dvb->demux.filternum  = 256;
 320         dvb->demux.feednum    = 256;
 321         dvb->demux.start_feed = start_feed;
 322         dvb->demux.stop_feed  = stop_feed;
 323
 324         result = dvb_dmx_init(&dvb->demux);
 325         if (result < 0) {
 326                 printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
 327                        dev->name, result);
 328                 goto fail_dmx;
 329         }
 330
 331         dvb->dmxdev.filternum    = 256;
 332         dvb->dmxdev.demux        = &dvb->demux.dmx;
 333         dvb->dmxdev.capabilities = 0;
 334         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 335         if (result < 0) {
 336                 printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
 337                        dev->name, result);
 338                 goto fail_dmxdev;
 339         }
 340
 341         dvb->fe_hw.source = DMX_FRONTEND_0;
 342         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 343         if (result < 0) {
 344                 printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
 345                        dev->name, result);
 346                 goto fail_fe_hw;
 347         }
 348
 349         dvb->fe_mem.source = DMX_MEMORY_FE;
 350         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 351         if (result < 0) {
 352                 printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
 353                        dev->name, result);
 354                 goto fail_fe_mem;
 355         }
 356
 357         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 358         if (result < 0) {
 359                 printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
 360                        dev->name, result);
 361                 goto fail_fe_conn;
 362         }
 363
 364         /* register network adapter */
 365         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 366         return 0;
 367
 368 fail_fe_conn:
 369         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 370 fail_fe_mem:
 371         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 372 fail_fe_hw:
 373         dvb_dmxdev_release(&dvb->dmxdev);
 374 fail_dmxdev:
 375         dvb_dmx_release(&dvb->demux);
 376 fail_dmx:
 377         dvb_unregister_frontend(dvb->frontend);
 378 fail_frontend:
 379         dvb_frontend_detach(dvb->frontend);
 380         dvb_unregister_adapter(&dvb->adapter);
 381 fail_adapter:
 382         return result;
 383 }
 384
 385 static void unregister_dvb(struct em28xx_dvb *dvb)
 386 {
 387         dvb_net_release(&dvb->net);
 388         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 389         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 390         dvb_dmxdev_release(&dvb->dmxdev);
 391         dvb_dmx_release(&dvb->demux);
 392         dvb_unregister_frontend(dvb->frontend);
 393         dvb_frontend_detach(dvb->frontend);
 394         dvb_unregister_adapter(&dvb->adapter);
 395 }
 396
 397
 398 static int dvb_init(struct em28xx *dev)
 399 {
 400         int result = 0;
 401         struct em28xx_dvb *dvb;
 402
 403         if (!dev->board.has_dvb) {
 404                 /* This device does not support the extension */
 405                 return 0;
 406         }
 407
 408         dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
 409
 410         if (dvb == NULL) {
 411                 printk(KERN_INFO "em28xx_dvb: memory allocation failed\n");
 412                 return -ENOMEM;
 413         }
 414         dev->dvb = dvb;
 415
 416         em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 417         /* init frontend */
 418         switch (dev->model) {
 419         case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
 420         case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
 421         case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
 422         case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
 423                 dvb->frontend = dvb_attach(lgdt330x_attach,
 424                                            &em2880_lgdt3303_dev,
 425                                            &dev->i2c_adap);
 426                 if (attach_xc3028(0x61, dev) < 0) {
 427                         result = -EINVAL;
 428                         goto out_free;
 429                 }
 430                 break;
 431         case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
 432         case EM2880_BOARD_TERRATEC_HYBRID_XS:
 433         case EM2880_BOARD_KWORLD_DVB_310U:
 434                 dvb->frontend = dvb_attach(zl10353_attach,
 435                                            &em28xx_zl10353_with_xc3028,
 436                                            &dev->i2c_adap);
 437                 if (attach_xc3028(0x61, dev) < 0) {
 438                         result = -EINVAL;
 439                         goto out_free;
 440                 }
 441                 break;
 442         case EM2883_BOARD_KWORLD_HYBRID_330U:
 443                 dvb->frontend = dvb_attach(s5h1409_attach,
 444                                            &em28xx_s5h1409_with_xc3028,
 445                                            &dev->i2c_adap);
 446                 if (attach_xc3028(0x61, dev) < 0) {
 447                         result = -EINVAL;
 448                         goto out_free;
 449                 }
 450                 break;
 451         case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
 452 #ifdef EM28XX_DRX397XD_SUPPORT
 453                 /* We don't have the config structure properly populated, so
 454                    this is commented out for now */
 455                 dvb->frontend = dvb_attach(drx397xD_attach,
 456                                            &em28xx_drx397xD_with_xc3028,
 457                                            &dev->i2c_adap);
 458                 if (attach_xc3028(0x61, dev) < 0) {
 459                         result = -EINVAL;
 460                         goto out_free;
 461                 }
 462                 break;
 463 #endif
 464         default:
 465                 printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
 466                                 " isn't supported yet\n",
 467                        dev->name);
 468                 break;
 469         }
 470         if (NULL == dvb->frontend) {
 471                 printk(KERN_ERR
 472                        "%s/2: frontend initialization failed\n",
 473                        dev->name);
 474                 result = -EINVAL;
 475                 goto out_free;
 476         }
 477         /* define general-purpose callback pointer */
 478         dvb->frontend->callback = em28xx_tuner_callback;
 479
 480         /* register everything */
 481         result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
 482
 483         if (result < 0)
 484                 goto out_free;
 485
 486         em28xx_set_mode(dev, EM28XX_SUSPEND);
 487         printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
 488         return 0;
 489
 490 out_free:
 491         em28xx_set_mode(dev, EM28XX_SUSPEND);
 492         kfree(dvb);
 493         dev->dvb = NULL;
 494         return result;
 495 }
 496
 497 static int dvb_fini(struct em28xx *dev)
 498 {
 499         if (!dev->board.has_dvb) {
 500                 /* This device does not support the extension */
 501                 return 0;
 502         }
 503
 504         if (dev->dvb) {
 505                 unregister_dvb(dev->dvb);
 506                 dev->dvb = NULL;
 507         }
 508
 509         return 0;
 510 }
 511
 512 static struct em28xx_ops dvb_ops = {
 513         .id   = EM28XX_DVB,
 514         .name = "Em28xx dvb Extension",
 515         .init = dvb_init,
 516         .fini = dvb_fini,
 517 };
 518
 519 static int __init em28xx_dvb_register(void)
 520 {
 521         return em28xx_register_extension(&dvb_ops);
 522 }
 523
 524 static void __exit em28xx_dvb_unregister(void)
 525 {
 526         em28xx_unregister_extension(&dvb_ops);
 527 }
 528
 529 module_init(em28xx_dvb_register);
 530 module_exit(em28xx_dvb_unregister);