drivers/media/video/cx231xx/cx231xx-dvb.c

   1 /*
   2  DVB device driver for cx231xx
   3
   4  Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
   5                 Based on em28xx driver
   6
   7  This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/slab.h>
  24 #include <linux/usb.h>
  25
  26 #include "cx231xx.h"
  27 #include <media/v4l2-common.h>
  28 #include <media/videobuf-vmalloc.h>
  29
  30 #include "xc5000.h"
  31 #include "dvb_dummy_fe.h"
  32 #include "s5h1432.h"
  33 #include "tda18271.h"
  34 #include "s5h1411.h"
  35 #include "lgdt3305.h"
  36
  37 MODULE_DESCRIPTION("driver for cx231xx based DVB cards");
  38 MODULE_AUTHOR("Srinivasa Deevi <srinivasa.deevi@conexant.com>");
  39 MODULE_LICENSE("GPL");
  40
  41 static unsigned int debug;
  42 module_param(debug, int, 0644);
  43 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
  44
  45 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  46
  47 #define dprintk(level, fmt, arg...) do {                        \
  48 if (debug >= level)                                             \
  49         printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
  50 } while (0)
  51
  52 #define CX231XX_DVB_NUM_BUFS 5
  53 #define CX231XX_DVB_MAX_PACKETSIZE 564
  54 #define CX231XX_DVB_MAX_PACKETS 64
  55
  56 struct cx231xx_dvb {
  57         struct dvb_frontend *frontend;
  58
  59         /* feed count management */
  60         struct mutex lock;
  61         int nfeeds;
  62
  63         /* general boilerplate stuff */
  64         struct dvb_adapter adapter;
  65         struct dvb_demux demux;
  66         struct dmxdev dmxdev;
  67         struct dmx_frontend fe_hw;
  68         struct dmx_frontend fe_mem;
  69         struct dvb_net net;
  70 };
  71
  72 static struct s5h1432_config dvico_s5h1432_config = {
  73         .output_mode   = S5H1432_SERIAL_OUTPUT,
  74         .gpio          = S5H1432_GPIO_ON,
  75         .qam_if        = S5H1432_IF_4000,
  76         .vsb_if        = S5H1432_IF_4000,
  77         .inversion     = S5H1432_INVERSION_OFF,
  78         .status_mode   = S5H1432_DEMODLOCKING,
  79         .mpeg_timing   = S5H1432_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
  80 };
  81
  82 static struct tda18271_std_map cnxt_rde253s_tda18271_std_map = {
  83         .dvbt_6   = { .if_freq = 4000, .agc_mode = 3, .std = 4,
  84                       .if_lvl = 1, .rfagc_top = 0x37, },
  85         .dvbt_7   = { .if_freq = 4000, .agc_mode = 3, .std = 5,
  86                       .if_lvl = 1, .rfagc_top = 0x37, },
  87         .dvbt_8   = { .if_freq = 4000, .agc_mode = 3, .std = 6,
  88                       .if_lvl = 1, .rfagc_top = 0x37, },
  89 };
  90
  91 static struct tda18271_config cnxt_rde253s_tunerconfig = {
  92         .std_map = &cnxt_rde253s_tda18271_std_map,
  93         .gate    = TDA18271_GATE_ANALOG,
  94 };
  95
  96 static struct s5h1411_config tda18271_s5h1411_config = {
  97         .output_mode   = S5H1411_SERIAL_OUTPUT,
  98         .gpio          = S5H1411_GPIO_OFF,
  99         .vsb_if        = S5H1411_IF_3250,
 100         .qam_if        = S5H1411_IF_4000,
 101         .inversion     = S5H1411_INVERSION_ON,
 102         .status_mode   = S5H1411_DEMODLOCKING,
 103         .mpeg_timing   = S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
 104 };
 105 static struct s5h1411_config xc5000_s5h1411_config = {
 106         .output_mode   = S5H1411_SERIAL_OUTPUT,
 107         .gpio          = S5H1411_GPIO_OFF,
 108         .vsb_if        = S5H1411_IF_3250,
 109         .qam_if        = S5H1411_IF_3250,
 110         .inversion     = S5H1411_INVERSION_OFF,
 111         .status_mode   = S5H1411_DEMODLOCKING,
 112         .mpeg_timing   = S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
 113 };
 114
 115 static struct lgdt3305_config hcw_lgdt3305_config = {
 116         .i2c_addr           = 0x0e,
 117         .mpeg_mode          = LGDT3305_MPEG_SERIAL,
 118         .tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
 119         .tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
 120         .deny_i2c_rptr      = 1,
 121         .spectral_inversion = 1,
 122         .qam_if_khz         = 4000,
 123         .vsb_if_khz         = 3250,
 124 };
 125
 126 static struct tda18271_std_map hauppauge_tda18271_std_map = {
 127         .atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 4,
 128                       .if_lvl = 1, .rfagc_top = 0x58, },
 129         .qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 5,
 130                       .if_lvl = 1, .rfagc_top = 0x58, },
 131 };
 132
 133 static struct tda18271_config hcw_tda18271_config = {
 134         .std_map = &hauppauge_tda18271_std_map,
 135         .gate    = TDA18271_GATE_DIGITAL,
 136 };
 137
 138 static inline void print_err_status(struct cx231xx *dev, int packet, int status)
 139 {
 140         char *errmsg = "Unknown";
 141
 142         switch (status) {
 143         case -ENOENT:
 144                 errmsg = "unlinked synchronuously";
 145                 break;
 146         case -ECONNRESET:
 147                 errmsg = "unlinked asynchronuously";
 148                 break;
 149         case -ENOSR:
 150                 errmsg = "Buffer error (overrun)";
 151                 break;
 152         case -EPIPE:
 153                 errmsg = "Stalled (device not responding)";
 154                 break;
 155         case -EOVERFLOW:
 156                 errmsg = "Babble (bad cable?)";
 157                 break;
 158         case -EPROTO:
 159                 errmsg = "Bit-stuff error (bad cable?)";
 160                 break;
 161         case -EILSEQ:
 162                 errmsg = "CRC/Timeout (could be anything)";
 163                 break;
 164         case -ETIME:
 165                 errmsg = "Device does not respond";
 166                 break;
 167         }
 168         if (packet < 0) {
 169                 dprintk(1, "URB status %d [%s].\n", status, errmsg);
 170         } else {
 171                 dprintk(1, "URB packet %d, status %d [%s].\n",
 172                         packet, status, errmsg);
 173         }
 174 }
 175
 176 static inline int dvb_isoc_copy(struct cx231xx *dev, struct urb *urb)
 177 {
 178         int i;
 179
 180         if (!dev)
 181                 return 0;
 182
 183         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 184                 return 0;
 185
 186         if (urb->status < 0) {
 187                 print_err_status(dev, -1, urb->status);
 188                 if (urb->status == -ENOENT)
 189                         return 0;
 190         }
 191
 192         for (i = 0; i < urb->number_of_packets; i++) {
 193                 int status = urb->iso_frame_desc[i].status;
 194
 195                 if (status < 0) {
 196                         print_err_status(dev, i, status);
 197                         if (urb->iso_frame_desc[i].status != -EPROTO)
 198                                 continue;
 199                 }
 200
 201                 dvb_dmx_swfilter(&dev->dvb->demux,
 202                                  urb->transfer_buffer +
 203                                 urb->iso_frame_desc[i].offset,
 204                                 urb->iso_frame_desc[i].actual_length);
 205         }
 206
 207         return 0;
 208 }
 209
 210 static inline int dvb_bulk_copy(struct cx231xx *dev, struct urb *urb)
 211 {
 212         if (!dev)
 213                 return 0;
 214
 215         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 216                 return 0;
 217
 218         if (urb->status < 0) {
 219                 print_err_status(dev, -1, urb->status);
 220                 if (urb->status == -ENOENT)
 221                         return 0;
 222         }
 223
 224         /* Feed the transport payload into the kernel demux */
 225         dvb_dmx_swfilter(&dev->dvb->demux,
 226                 urb->transfer_buffer, urb->actual_length);
 227
 228         return 0;
 229 }
 230
 231 static int start_streaming(struct cx231xx_dvb *dvb)
 232 {
 233         int rc;
 234         struct cx231xx *dev = dvb->adapter.priv;
 235
 236         if (dev->USE_ISO) {
 237                 cx231xx_info("DVB transfer mode is ISO.\n");
 238 mutex_lock(&dev->i2c_lock);
 239                 cx231xx_enable_i2c_for_tuner(dev, I2C_1);
 240                 cx231xx_set_alt_setting(dev, INDEX_TS1, 4);
 241                 cx231xx_enable_i2c_for_tuner(dev, I2C_3);
 242 mutex_unlock(&dev->i2c_lock);
 243                 rc = cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
 244                 if (rc < 0)
 245                         return rc;
 246                 dev->mode_tv = 1;
 247                 return cx231xx_init_isoc(dev, CX231XX_DVB_MAX_PACKETS,
 248                                         CX231XX_DVB_NUM_BUFS,
 249                                         dev->ts1_mode.max_pkt_size,
 250                                         dvb_isoc_copy);
 251         } else {
 252                 cx231xx_info("DVB transfer mode is BULK.\n");
 253                 cx231xx_set_alt_setting(dev, INDEX_TS1, 0);
 254                 rc = cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
 255                 if (rc < 0)
 256                         return rc;
 257                 dev->mode_tv = 1;
 258                 return cx231xx_init_bulk(dev, CX231XX_DVB_MAX_PACKETS,
 259                                         CX231XX_DVB_NUM_BUFS,
 260                                         dev->ts1_mode.max_pkt_size,
 261                                         dvb_bulk_copy);
 262         }
 263
 264 }
 265
 266 static int stop_streaming(struct cx231xx_dvb *dvb)
 267 {
 268         struct cx231xx *dev = dvb->adapter.priv;
 269
 270         if (dev->USE_ISO)
 271                 cx231xx_uninit_isoc(dev);
 272         else
 273                 cx231xx_uninit_bulk(dev);
 274
 275         cx231xx_set_mode(dev, CX231XX_SUSPEND);
 276
 277         return 0;
 278 }
 279
 280 static int start_feed(struct dvb_demux_feed *feed)
 281 {
 282         struct dvb_demux *demux = feed->demux;
 283         struct cx231xx_dvb *dvb = demux->priv;
 284         int rc, ret;
 285
 286         if (!demux->dmx.frontend)
 287                 return -EINVAL;
 288
 289         mutex_lock(&dvb->lock);
 290         dvb->nfeeds++;
 291         rc = dvb->nfeeds;
 292
 293         if (dvb->nfeeds == 1) {
 294                 ret = start_streaming(dvb);
 295                 if (ret < 0)
 296                         rc = ret;
 297         }
 298
 299         mutex_unlock(&dvb->lock);
 300         return rc;
 301 }
 302
 303 static int stop_feed(struct dvb_demux_feed *feed)
 304 {
 305         struct dvb_demux *demux = feed->demux;
 306         struct cx231xx_dvb *dvb = demux->priv;
 307         int err = 0;
 308
 309         mutex_lock(&dvb->lock);
 310         dvb->nfeeds--;
 311
 312         if (0 == dvb->nfeeds)
 313                 err = stop_streaming(dvb);
 314
 315         mutex_unlock(&dvb->lock);
 316         return err;
 317 }
 318
 319 /* ------------------------------------------------------------------ */
 320 static int cx231xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
 321 {
 322         struct cx231xx *dev = fe->dvb->priv;
 323
 324         if (acquire)
 325                 return cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
 326         else
 327                 return cx231xx_set_mode(dev, CX231XX_SUSPEND);
 328 }
 329
 330 /* ------------------------------------------------------------------ */
 331
 332 static struct xc5000_config cnxt_rde250_tunerconfig = {
 333         .i2c_address = 0x61,
 334         .if_khz = 4000,
 335 };
 336 static struct xc5000_config cnxt_rdu250_tunerconfig = {
 337         .i2c_address = 0x61,
 338         .if_khz = 3250,
 339 };
 340
 341 /* ------------------------------------------------------------------ */
 342 #if 0
 343 static int attach_xc5000(u8 addr, struct cx231xx *dev)
 344 {
 345
 346         struct dvb_frontend *fe;
 347         struct xc5000_config cfg;
 348
 349         memset(&cfg, 0, sizeof(cfg));
 350         cfg.i2c_adap = &dev->i2c_bus[1].i2c_adap;
 351         cfg.i2c_addr = addr;
 352
 353         if (!dev->dvb->frontend) {
 354                 printk(KERN_ERR "%s/2: dvb frontend not attached. "
 355                        "Can't attach xc5000\n", dev->name);
 356                 return -EINVAL;
 357         }
 358
 359         fe = dvb_attach(xc5000_attach, dev->dvb->frontend, &cfg);
 360         if (!fe) {
 361                 printk(KERN_ERR "%s/2: xc5000 attach failed\n", dev->name);
 362                 dvb_frontend_detach(dev->dvb->frontend);
 363                 dev->dvb->frontend = NULL;
 364                 return -EINVAL;
 365         }
 366
 367         printk(KERN_INFO "%s/2: xc5000 attached\n", dev->name);
 368
 369         return 0;
 370 }
 371 #endif
 372
 373 int cx231xx_set_analog_freq(struct cx231xx *dev, u32 freq)
 374 {
 375         int status = 0;
 376
 377         if ((dev->dvb != NULL) && (dev->dvb->frontend != NULL)) {
 378
 379                 struct dvb_tuner_ops *dops = &dev->dvb->frontend->ops.tuner_ops;
 380
 381                 if (dops->set_analog_params != NULL) {
 382                         struct analog_parameters params;
 383
 384                         params.frequency = freq;
 385                         params.std = dev->norm;
 386                         params.mode = 0;        /* 0- Air; 1 - cable */
 387                         /*params.audmode = ;       */
 388
 389                         /* Set the analog parameters to set the frequency */
 390                         dops->set_analog_params(dev->dvb->frontend, &params);
 391                 }
 392
 393         }
 394
 395         return status;
 396 }
 397
 398 int cx231xx_reset_analog_tuner(struct cx231xx *dev)
 399 {
 400         int status = 0;
 401
 402         if ((dev->dvb != NULL) && (dev->dvb->frontend != NULL)) {
 403
 404                 struct dvb_tuner_ops *dops = &dev->dvb->frontend->ops.tuner_ops;
 405
 406                 if (dops->init != NULL && !dev->xc_fw_load_done) {
 407
 408                         cx231xx_info("Reloading firmware for XC5000\n");
 409                         status = dops->init(dev->dvb->frontend);
 410                         if (status == 0) {
 411                                 dev->xc_fw_load_done = 1;
 412                                 cx231xx_info
 413                                     ("XC5000 firmware download completed\n");
 414                         } else {
 415                                 dev->xc_fw_load_done = 0;
 416                                 cx231xx_info
 417                                     ("XC5000 firmware download failed !!!\n");
 418                         }
 419                 }
 420
 421         }
 422
 423         return status;
 424 }
 425
 426 /* ------------------------------------------------------------------ */
 427
 428 static int register_dvb(struct cx231xx_dvb *dvb,
 429                         struct module *module,
 430                         struct cx231xx *dev, struct device *device)
 431 {
 432         int result;
 433
 434         mutex_init(&dvb->lock);
 435
 436         /* register adapter */
 437         result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
 438                                       adapter_nr);
 439         if (result < 0) {
 440                 printk(KERN_WARNING
 441                        "%s: dvb_register_adapter failed (errno = %d)\n",
 442                        dev->name, result);
 443                 goto fail_adapter;
 444         }
 445
 446         /* Ensure all frontends negotiate bus access */
 447         dvb->frontend->ops.ts_bus_ctrl = cx231xx_dvb_bus_ctrl;
 448
 449         dvb->adapter.priv = dev;
 450
 451         /* register frontend */
 452         result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 453         if (result < 0) {
 454                 printk(KERN_WARNING
 455                        "%s: dvb_register_frontend failed (errno = %d)\n",
 456                        dev->name, result);
 457                 goto fail_frontend;
 458         }
 459
 460         /* register demux stuff */
 461         dvb->demux.dmx.capabilities =
 462             DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 463             DMX_MEMORY_BASED_FILTERING;
 464         dvb->demux.priv = dvb;
 465         dvb->demux.filternum = 256;
 466         dvb->demux.feednum = 256;
 467         dvb->demux.start_feed = start_feed;
 468         dvb->demux.stop_feed = stop_feed;
 469
 470         result = dvb_dmx_init(&dvb->demux);
 471         if (result < 0) {
 472                 printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
 473                        dev->name, result);
 474                 goto fail_dmx;
 475         }
 476
 477         dvb->dmxdev.filternum = 256;
 478         dvb->dmxdev.demux = &dvb->demux.dmx;
 479         dvb->dmxdev.capabilities = 0;
 480         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 481         if (result < 0) {
 482                 printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
 483                        dev->name, result);
 484                 goto fail_dmxdev;
 485         }
 486
 487         dvb->fe_hw.source = DMX_FRONTEND_0;
 488         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 489         if (result < 0) {
 490                 printk(KERN_WARNING
 491                        "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
 492                        dev->name, result);
 493                 goto fail_fe_hw;
 494         }
 495
 496         dvb->fe_mem.source = DMX_MEMORY_FE;
 497         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 498         if (result < 0) {
 499                 printk(KERN_WARNING
 500                        "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
 501                        dev->name, result);
 502                 goto fail_fe_mem;
 503         }
 504
 505         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 506         if (result < 0) {
 507                 printk(KERN_WARNING
 508                        "%s: connect_frontend failed (errno = %d)\n", dev->name,
 509                        result);
 510                 goto fail_fe_conn;
 511         }
 512
 513         /* register network adapter */
 514         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 515         return 0;
 516
 517 fail_fe_conn:
 518         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 519 fail_fe_mem:
 520         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 521 fail_fe_hw:
 522         dvb_dmxdev_release(&dvb->dmxdev);
 523 fail_dmxdev:
 524         dvb_dmx_release(&dvb->demux);
 525 fail_dmx:
 526         dvb_unregister_frontend(dvb->frontend);
 527 fail_frontend:
 528         dvb_frontend_detach(dvb->frontend);
 529         dvb_unregister_adapter(&dvb->adapter);
 530 fail_adapter:
 531         return result;
 532 }
 533
 534 static void unregister_dvb(struct cx231xx_dvb *dvb)
 535 {
 536         dvb_net_release(&dvb->net);
 537         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 538         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 539         dvb_dmxdev_release(&dvb->dmxdev);
 540         dvb_dmx_release(&dvb->demux);
 541         dvb_unregister_frontend(dvb->frontend);
 542         dvb_frontend_detach(dvb->frontend);
 543         dvb_unregister_adapter(&dvb->adapter);
 544 }
 545
 546 static int dvb_init(struct cx231xx *dev)
 547 {
 548         int result = 0;
 549         struct cx231xx_dvb *dvb;
 550
 551         if (!dev->board.has_dvb) {
 552                 /* This device does not support the extension */
 553                 return 0;
 554         }
 555
 556         dvb = kzalloc(sizeof(struct cx231xx_dvb), GFP_KERNEL);
 557
 558         if (dvb == NULL) {
 559                 printk(KERN_INFO "cx231xx_dvb: memory allocation failed\n");
 560                 return -ENOMEM;
 561         }
 562         dev->dvb = dvb;
 563         dev->cx231xx_set_analog_freq = cx231xx_set_analog_freq;
 564         dev->cx231xx_reset_analog_tuner = cx231xx_reset_analog_tuner;
 565
 566         mutex_lock(&dev->lock);
 567         cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
 568         cx231xx_demod_reset(dev);
 569         /* init frontend */
 570         switch (dev->model) {
 571         case CX231XX_BOARD_CNXT_CARRAERA:
 572         case CX231XX_BOARD_CNXT_RDE_250:
 573
 574                 dev->dvb->frontend = dvb_attach(s5h1432_attach,
 575                                         &dvico_s5h1432_config,
 576                                         &dev->i2c_bus[2].i2c_adap);
 577
 578                 if (dev->dvb->frontend == NULL) {
 579                         printk(DRIVER_NAME
 580                                ": Failed to attach s5h1432 front end\n");
 581                         result = -EINVAL;
 582                         goto out_free;
 583                 }
 584
 585                 /* define general-purpose callback pointer */
 586                 dvb->frontend->callback = cx231xx_tuner_callback;
 587
 588                 if (!dvb_attach(xc5000_attach, dev->dvb->frontend,
 589                                &dev->i2c_bus[1].i2c_adap,
 590                                &cnxt_rde250_tunerconfig)) {
 591                         result = -EINVAL;
 592                         goto out_free;
 593                 }
 594
 595                 break;
 596         case CX231XX_BOARD_CNXT_SHELBY:
 597         case CX231XX_BOARD_CNXT_RDU_250:
 598
 599                 dev->dvb->frontend = dvb_attach(s5h1411_attach,
 600                                                &xc5000_s5h1411_config,
 601                                                &dev->i2c_bus[2].i2c_adap);
 602
 603                 if (dev->dvb->frontend == NULL) {
 604                         printk(DRIVER_NAME
 605                                ": Failed to attach dummy front end\n");
 606                         result = -EINVAL;
 607                         goto out_free;
 608                 }
 609
 610                 /* define general-purpose callback pointer */
 611                 dvb->frontend->callback = cx231xx_tuner_callback;
 612
 613                 if (!dvb_attach(xc5000_attach, dev->dvb->frontend,
 614                                &dev->i2c_bus[1].i2c_adap,
 615                                &cnxt_rdu250_tunerconfig)) {
 616                         result = -EINVAL;
 617                         goto out_free;
 618                 }
 619                 break;
 620         case CX231XX_BOARD_CNXT_RDE_253S:
 621
 622                 dev->dvb->frontend = dvb_attach(s5h1432_attach,
 623                                         &dvico_s5h1432_config,
 624                                         &dev->i2c_bus[2].i2c_adap);
 625
 626                 if (dev->dvb->frontend == NULL) {
 627                         printk(DRIVER_NAME
 628                                ": Failed to attach s5h1432 front end\n");
 629                         result = -EINVAL;
 630                         goto out_free;
 631                 }
 632
 633                 /* define general-purpose callback pointer */
 634                 dvb->frontend->callback = cx231xx_tuner_callback;
 635
 636                 if (!dvb_attach(tda18271_attach, dev->dvb->frontend,
 637                                0x60, &dev->i2c_bus[1].i2c_adap,
 638                                &cnxt_rde253s_tunerconfig)) {
 639                         result = -EINVAL;
 640                         goto out_free;
 641                 }
 642                 break;
 643         case CX231XX_BOARD_CNXT_RDU_253S:
 644
 645                 dev->dvb->frontend = dvb_attach(s5h1411_attach,
 646                                                &tda18271_s5h1411_config,
 647                                                &dev->i2c_bus[2].i2c_adap);
 648
 649                 if (dev->dvb->frontend == NULL) {
 650                         printk(DRIVER_NAME
 651                                ": Failed to attach dummy front end\n");
 652                         result = -EINVAL;
 653                         goto out_free;
 654                 }
 655
 656                 /* define general-purpose callback pointer */
 657                 dvb->frontend->callback = cx231xx_tuner_callback;
 658
 659                 if (!dvb_attach(tda18271_attach, dev->dvb->frontend,
 660                                0x60, &dev->i2c_bus[1].i2c_adap,
 661                                &cnxt_rde253s_tunerconfig)) {
 662                         result = -EINVAL;
 663                         goto out_free;
 664                 }
 665                 break;
 666         case CX231XX_BOARD_HAUPPAUGE_EXETER:
 667
 668                 printk(KERN_INFO "%s: looking for tuner / demod on i2c bus: %d\n",
 669                        __func__, i2c_adapter_id(&dev->i2c_bus[1].i2c_adap));
 670
 671                 dev->dvb->frontend = dvb_attach(lgdt3305_attach,
 672                                                 &hcw_lgdt3305_config,
 673                                                 &dev->i2c_bus[1].i2c_adap);
 674
 675                 if (dev->dvb->frontend == NULL) {
 676                         printk(DRIVER_NAME
 677                                ": Failed to attach LG3305 front end\n");
 678                         result = -EINVAL;
 679                         goto out_free;
 680                 }
 681
 682                 /* define general-purpose callback pointer */
 683                 dvb->frontend->callback = cx231xx_tuner_callback;
 684
 685                 dvb_attach(tda18271_attach, dev->dvb->frontend,
 686                            0x60, &dev->i2c_bus[1].i2c_adap,
 687                            &hcw_tda18271_config);
 688                 break;
 689
 690
 691         default:
 692                 printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
 693                        " isn't supported yet\n", dev->name);
 694                 break;
 695         }
 696         if (NULL == dvb->frontend) {
 697                 printk(KERN_ERR
 698                        "%s/2: frontend initialization failed\n", dev->name);
 699                 result = -EINVAL;
 700                 goto out_free;
 701         }
 702
 703         /* register everything */
 704         result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
 705
 706         if (result < 0)
 707                 goto out_free;
 708
 709
 710         printk(KERN_INFO "Successfully loaded cx231xx-dvb\n");
 711
 712 ret:
 713         cx231xx_set_mode(dev, CX231XX_SUSPEND);
 714         mutex_unlock(&dev->lock);
 715         return result;
 716
 717 out_free:
 718         kfree(dvb);
 719         dev->dvb = NULL;
 720         goto ret;
 721 }
 722
 723 static int dvb_fini(struct cx231xx *dev)
 724 {
 725         if (!dev->board.has_dvb) {
 726                 /* This device does not support the extension */
 727                 return 0;
 728         }
 729
 730         if (dev->dvb) {
 731                 unregister_dvb(dev->dvb);
 732                 dev->dvb = NULL;
 733         }
 734
 735         return 0;
 736 }
 737
 738 static struct cx231xx_ops dvb_ops = {
 739         .id = CX231XX_DVB,
 740         .name = "Cx231xx dvb Extension",
 741         .init = dvb_init,
 742         .fini = dvb_fini,
 743 };
 744
 745 static int __init cx231xx_dvb_register(void)
 746 {
 747         return cx231xx_register_extension(&dvb_ops);
 748 }
 749
 750 static void __exit cx231xx_dvb_unregister(void)
 751 {
 752         cx231xx_unregister_extension(&dvb_ops);
 753 }
 754
 755 module_init(cx231xx_dvb_register);
 756 module_exit(cx231xx_dvb_unregister);