Pileus Git - ~andy/linux/blob - drivers/media/video/em28xx/em28xx-dvb.c

   1 /*
   2  DVB device driver for em28xx
   3
   4  (c) 2008-2011 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/slab.h>
  24 #include <linux/usb.h>
  25
  26 #include "em28xx.h"
  27 #include <media/v4l2-common.h>
  28 #include <media/videobuf-vmalloc.h>
  29 #include <media/tuner.h>
  30 #include "tuner-simple.h"
  31
  32 #include "lgdt330x.h"
  33 #include "lgdt3305.h"
  34 #include "zl10353.h"
  35 #include "s5h1409.h"
  36 #include "mt352.h"
  37 #include "mt352_priv.h" /* FIXME */
  38 #include "tda1002x.h"
  39 #include "tda18271.h"
  40 #include "s921.h"
  41 #include "drxd.h"
  42 #include "cxd2820r.h"
  43 #include "tda18271c2dd.h"
  44 #include "drxk.h"
  45 #include "tda10071.h"
  46 #include "a8293.h"
  47 #include "qt1010.h"
  48
  49 MODULE_DESCRIPTION("driver for em28xx based DVB cards");
  50 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
  51 MODULE_LICENSE("GPL");
  52
  53 static unsigned int debug;
  54 module_param(debug, int, 0644);
  55 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
  56
  57 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  58
  59 #define dprintk(level, fmt, arg...) do {                        \
  60 if (debug >= level)                                             \
  61         printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
  62 } while (0)
  63
  64 struct em28xx_dvb {
  65         struct dvb_frontend        *fe[2];
  66
  67         /* feed count management */
  68         struct mutex               lock;
  69         int                        nfeeds;
  70
  71         /* general boilerplate stuff */
  72         struct dvb_adapter         adapter;
  73         struct dvb_demux           demux;
  74         struct dmxdev              dmxdev;
  75         struct dmx_frontend        fe_hw;
  76         struct dmx_frontend        fe_mem;
  77         struct dvb_net             net;
  78
  79         /* Due to DRX-K - probably need changes */
  80         int (*gate_ctrl)(struct dvb_frontend *, int);
  81         struct semaphore      pll_mutex;
  82         bool                    dont_attach_fe1;
  83 };
  84
  85
  86 static inline void print_err_status(struct em28xx *dev,
  87                                      int packet, int status)
  88 {
  89         char *errmsg = "Unknown";
  90
  91         switch (status) {
  92         case -ENOENT:
  93                 errmsg = "unlinked synchronuously";
  94                 break;
  95         case -ECONNRESET:
  96                 errmsg = "unlinked asynchronuously";
  97                 break;
  98         case -ENOSR:
  99                 errmsg = "Buffer error (overrun)";
 100                 break;
 101         case -EPIPE:
 102                 errmsg = "Stalled (device not responding)";
 103                 break;
 104         case -EOVERFLOW:
 105                 errmsg = "Babble (bad cable?)";
 106                 break;
 107         case -EPROTO:
 108                 errmsg = "Bit-stuff error (bad cable?)";
 109                 break;
 110         case -EILSEQ:
 111                 errmsg = "CRC/Timeout (could be anything)";
 112                 break;
 113         case -ETIME:
 114                 errmsg = "Device does not respond";
 115                 break;
 116         }
 117         if (packet < 0) {
 118                 dprintk(1, "URB status %d [%s].\n", status, errmsg);
 119         } else {
 120                 dprintk(1, "URB packet %d, status %d [%s].\n",
 121                         packet, status, errmsg);
 122         }
 123 }
 124
 125 static inline int em28xx_dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
 126 {
 127         int i;
 128
 129         if (!dev)
 130                 return 0;
 131
 132         if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
 133                 return 0;
 134
 135         if (urb->status < 0) {
 136                 print_err_status(dev, -1, urb->status);
 137                 if (urb->status == -ENOENT)
 138                         return 0;
 139         }
 140
 141         for (i = 0; i < urb->number_of_packets; i++) {
 142                 int status = urb->iso_frame_desc[i].status;
 143
 144                 if (status < 0) {
 145                         print_err_status(dev, i, status);
 146                         if (urb->iso_frame_desc[i].status != -EPROTO)
 147                                 continue;
 148                 }
 149
 150                 dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
 151                                  urb->iso_frame_desc[i].offset,
 152                                  urb->iso_frame_desc[i].actual_length);
 153         }
 154
 155         return 0;
 156 }
 157
 158 static int em28xx_start_streaming(struct em28xx_dvb *dvb)
 159 {
 160         int rc;
 161         struct em28xx *dev = dvb->adapter.priv;
 162         int max_dvb_packet_size;
 163
 164         usb_set_interface(dev->udev, 0, dev->dvb_alt);
 165         rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 166         if (rc < 0)
 167                 return rc;
 168
 169         max_dvb_packet_size = dev->dvb_max_pkt_size;
 170         if (max_dvb_packet_size < 0)
 171                 return max_dvb_packet_size;
 172         dprintk(1, "Using %d buffers each with %d x %d bytes\n",
 173                 EM28XX_DVB_NUM_BUFS,
 174                 EM28XX_DVB_MAX_PACKETS,
 175                 max_dvb_packet_size);
 176
 177         return em28xx_init_isoc(dev, EM28XX_DIGITAL_MODE,
 178                                 EM28XX_DVB_MAX_PACKETS, EM28XX_DVB_NUM_BUFS,
 179                                 max_dvb_packet_size, em28xx_dvb_isoc_copy);
 180 }
 181
 182 static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
 183 {
 184         struct em28xx *dev = dvb->adapter.priv;
 185
 186         em28xx_capture_start(dev, 0);
 187
 188         em28xx_set_mode(dev, EM28XX_SUSPEND);
 189
 190         return 0;
 191 }
 192
 193 static int em28xx_start_feed(struct dvb_demux_feed *feed)
 194 {
 195         struct dvb_demux *demux  = feed->demux;
 196         struct em28xx_dvb *dvb = demux->priv;
 197         int rc, ret;
 198
 199         if (!demux->dmx.frontend)
 200                 return -EINVAL;
 201
 202         mutex_lock(&dvb->lock);
 203         dvb->nfeeds++;
 204         rc = dvb->nfeeds;
 205
 206         if (dvb->nfeeds == 1) {
 207                 ret = em28xx_start_streaming(dvb);
 208                 if (ret < 0)
 209                         rc = ret;
 210         }
 211
 212         mutex_unlock(&dvb->lock);
 213         return rc;
 214 }
 215
 216 static int em28xx_stop_feed(struct dvb_demux_feed *feed)
 217 {
 218         struct dvb_demux *demux  = feed->demux;
 219         struct em28xx_dvb *dvb = demux->priv;
 220         int err = 0;
 221
 222         mutex_lock(&dvb->lock);
 223         dvb->nfeeds--;
 224
 225         if (0 == dvb->nfeeds)
 226                 err = em28xx_stop_streaming(dvb);
 227
 228         mutex_unlock(&dvb->lock);
 229         return err;
 230 }
 231
 232
 233
 234 /* ------------------------------------------------------------------ */
 235 static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
 236 {
 237         struct em28xx *dev = fe->dvb->priv;
 238
 239         if (acquire)
 240                 return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 241         else
 242                 return em28xx_set_mode(dev, EM28XX_SUSPEND);
 243 }
 244
 245 /* ------------------------------------------------------------------ */
 246
 247 static struct lgdt330x_config em2880_lgdt3303_dev = {
 248         .demod_address = 0x0e,
 249         .demod_chip = LGDT3303,
 250 };
 251
 252 static struct lgdt3305_config em2870_lgdt3304_dev = {
 253         .i2c_addr           = 0x0e,
 254         .demod_chip         = LGDT3304,
 255         .spectral_inversion = 1,
 256         .deny_i2c_rptr      = 1,
 257         .mpeg_mode          = LGDT3305_MPEG_PARALLEL,
 258         .tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
 259         .tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
 260         .vsb_if_khz         = 3250,
 261         .qam_if_khz         = 4000,
 262 };
 263
 264 static struct s921_config sharp_isdbt = {
 265         .demod_address = 0x30 >> 1
 266 };
 267
 268 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
 269         .demod_address = (0x1e >> 1),
 270         .no_tuner = 1,
 271         .parallel_ts = 1,
 272         .if2 = 45600,
 273 };
 274
 275 static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
 276         .demod_address = 0x32 >> 1,
 277         .output_mode   = S5H1409_PARALLEL_OUTPUT,
 278         .gpio          = S5H1409_GPIO_OFF,
 279         .inversion     = S5H1409_INVERSION_OFF,
 280         .status_mode   = S5H1409_DEMODLOCKING,
 281         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
 282 };
 283
 284 static struct tda18271_std_map kworld_a340_std_map = {
 285         .atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
 286                       .if_lvl = 1, .rfagc_top = 0x37, },
 287         .qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
 288                       .if_lvl = 1, .rfagc_top = 0x37, },
 289 };
 290
 291 static struct tda18271_config kworld_a340_config = {
 292         .std_map           = &kworld_a340_std_map,
 293 };
 294
 295 static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
 296         .demod_address = (0x1e >> 1),
 297         .no_tuner = 1,
 298         .disable_i2c_gate_ctrl = 1,
 299         .parallel_ts = 1,
 300         .if2 = 45600,
 301 };
 302
 303 static struct drxd_config em28xx_drxd = {
 304         .demod_address = 0x70,
 305         .demod_revision = 0xa2,
 306         .pll_type = DRXD_PLL_NONE,
 307         .clock = 12000,
 308         .insert_rs_byte = 1,
 309         .IF = 42800000,
 310         .disable_i2c_gate_ctrl = 1,
 311 };
 312
 313 struct drxk_config terratec_h5_drxk = {
 314         .adr = 0x29,
 315         .single_master = 1,
 316         .no_i2c_bridge = 1,
 317         .microcode_name = "dvb-usb-terratec-h5-drxk.fw",
 318 };
 319
 320 struct drxk_config hauppauge_930c_drxk = {
 321         .adr = 0x29,
 322         .single_master = 1,
 323         .no_i2c_bridge = 1,
 324         .microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
 325         .chunk_size = 56,
 326 };
 327
 328 struct drxk_config maxmedia_ub425_tc_drxk = {
 329         .adr = 0x29,
 330         .single_master = 1,
 331         .no_i2c_bridge = 1,
 332 };
 333
 334 struct drxk_config pctv_520e_drxk = {
 335         .adr = 0x29,
 336         .single_master = 1,
 337         .microcode_name = "dvb-demod-drxk-pctv.fw",
 338         .chunk_size = 58,
 339 };
 340
 341 struct drxk_config pctv_520e_drxk = {
 342         .adr = 0x29,
 343         .single_master = 1,
 344         .microcode_name = "dvb-demod-drxk-pctv.fw",
 345         .chunk_size = 58,
 346 };
 347
 348 static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
 349 {
 350         struct em28xx_dvb *dvb = fe->sec_priv;
 351         int status;
 352
 353         if (!dvb)
 354                 return -EINVAL;
 355
 356         if (enable) {
 357                 down(&dvb->pll_mutex);
 358                 status = dvb->gate_ctrl(fe, 1);
 359         } else {
 360                 status = dvb->gate_ctrl(fe, 0);
 361                 up(&dvb->pll_mutex);
 362         }
 363         return status;
 364 }
 365
 366 static void hauppauge_hvr930c_init(struct em28xx *dev)
 367 {
 368         int i;
 369
 370         struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
 371                 {EM2874_R80_GPIO,       0xff,   0xff,   0x65},
 372                 {EM2874_R80_GPIO,       0xfb,   0xff,   0x32},
 373                 {EM2874_R80_GPIO,       0xff,   0xff,   0xb8},
 374                 { -1,                   -1,     -1,     -1},
 375         };
 376         struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
 377                 {EM2874_R80_GPIO,       0xef,   0xff,   0x01},
 378                 {EM2874_R80_GPIO,       0xaf,   0xff,   0x65},
 379                 {EM2874_R80_GPIO,       0xef,   0xff,   0x76},
 380                 {EM2874_R80_GPIO,       0xef,   0xff,   0x01},
 381                 {EM2874_R80_GPIO,       0xcf,   0xff,   0x0b},
 382                 {EM2874_R80_GPIO,       0xef,   0xff,   0x40},
 383
 384                 {EM2874_R80_GPIO,       0xcf,   0xff,   0x65},
 385                 {EM2874_R80_GPIO,       0xef,   0xff,   0x65},
 386                 {EM2874_R80_GPIO,       0xcf,   0xff,   0x0b},
 387                 {EM2874_R80_GPIO,       0xef,   0xff,   0x65},
 388
 389                 { -1,                   -1,     -1,     -1},
 390         };
 391
 392         struct {
 393                 unsigned char r[4];
 394                 int len;
 395         } regs[] = {
 396                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 397                 {{ 0x01, 0x02 }, 2},
 398                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 399                 {{ 0x01, 0x00 }, 2},
 400                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 401                 {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
 402                 {{ 0x01, 0x00 }, 2},
 403                 {{ 0x01, 0x00, 0x73, 0xaf }, 4},
 404                 {{ 0x04, 0x00 }, 2},
 405                 {{ 0x00, 0x04 }, 2},
 406                 {{ 0x00, 0x04, 0x00, 0x0a }, 4},
 407                 {{ 0x04, 0x14 }, 2},
 408                 {{ 0x04, 0x14, 0x00, 0x00 }, 4},
 409         };
 410
 411         em28xx_gpio_set(dev, hauppauge_hvr930c_init);
 412         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
 413         msleep(10);
 414         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
 415         msleep(10);
 416
 417         dev->i2c_client.addr = 0x82 >> 1;
 418
 419         for (i = 0; i < ARRAY_SIZE(regs); i++)
 420                 i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);
 421         em28xx_gpio_set(dev, hauppauge_hvr930c_end);
 422
 423         msleep(100);
 424
 425         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
 426         msleep(30);
 427
 428         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
 429         msleep(10);
 430
 431 }
 432
 433 static void terratec_h5_init(struct em28xx *dev)
 434 {
 435         int i;
 436         struct em28xx_reg_seq terratec_h5_init[] = {
 437                 {EM28XX_R08_GPIO,       0xff,   0xff,   10},
 438                 {EM2874_R80_GPIO,       0xf6,   0xff,   100},
 439                 {EM2874_R80_GPIO,       0xf2,   0xff,   50},
 440                 {EM2874_R80_GPIO,       0xf6,   0xff,   100},
 441                 { -1,                   -1,     -1,     -1},
 442         };
 443         struct em28xx_reg_seq terratec_h5_end[] = {
 444                 {EM2874_R80_GPIO,       0xe6,   0xff,   100},
 445                 {EM2874_R80_GPIO,       0xa6,   0xff,   50},
 446                 {EM2874_R80_GPIO,       0xe6,   0xff,   100},
 447                 { -1,                   -1,     -1,     -1},
 448         };
 449         struct {
 450                 unsigned char r[4];
 451                 int len;
 452         } regs[] = {
 453                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 454                 {{ 0x01, 0x02 }, 2},
 455                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 456                 {{ 0x01, 0x00 }, 2},
 457                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 458                 {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
 459                 {{ 0x01, 0x00 }, 2},
 460                 {{ 0x01, 0x00, 0x73, 0xaf }, 4},
 461                 {{ 0x04, 0x00 }, 2},
 462                 {{ 0x00, 0x04 }, 2},
 463                 {{ 0x00, 0x04, 0x00, 0x0a }, 4},
 464                 {{ 0x04, 0x14 }, 2},
 465                 {{ 0x04, 0x14, 0x00, 0x00 }, 4},
 466         };
 467
 468         em28xx_gpio_set(dev, terratec_h5_init);
 469         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
 470         msleep(10);
 471         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
 472         msleep(10);
 473
 474         dev->i2c_client.addr = 0x82 >> 1;
 475
 476         for (i = 0; i < ARRAY_SIZE(regs); i++)
 477                 i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);
 478         em28xx_gpio_set(dev, terratec_h5_end);
 479 };
 480
 481 static void pctv_520e_init(struct em28xx *dev)
 482 {
 483         /*
 484          * Init TDA8295(?) analog demodulator. Looks like I2C traffic to
 485          * digital demodulator and tuner are routed via TDA8295.
 486          */
 487         int i;
 488         struct {
 489                 unsigned char r[4];
 490                 int len;
 491         } regs[] = {
 492                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 493                 {{ 0x01, 0x02 }, 2},
 494                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 495                 {{ 0x01, 0x00 }, 2},
 496                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 497                 {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
 498                 {{ 0x01, 0x00 }, 2},
 499                 {{ 0x01, 0x00, 0x73, 0xaf }, 4},
 500         };
 501
 502         dev->i2c_client.addr = 0x82 >> 1; /* 0x41 */
 503
 504         for (i = 0; i < ARRAY_SIZE(regs); i++)
 505                 i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);
 506 };
 507
 508 static void pctv_520e_init(struct em28xx *dev)
 509 {
 510         /*
 511          * Init TDA8295(?) analog demodulator. Looks like I2C traffic to
 512          * digital demodulator and tuner are routed via TDA8295.
 513          */
 514         int i;
 515         struct {
 516                 unsigned char r[4];
 517                 int len;
 518         } regs[] = {
 519                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 520                 {{ 0x01, 0x02 }, 2},
 521                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 522                 {{ 0x01, 0x00 }, 2},
 523                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 524                 {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
 525                 {{ 0x01, 0x00 }, 2},
 526                 {{ 0x01, 0x00, 0x73, 0xaf }, 4},
 527         };
 528
 529         dev->i2c_client.addr = 0x82 >> 1; /* 0x41 */
 530
 531         for (i = 0; i < ARRAY_SIZE(regs); i++)
 532                 i2c_master_send(&dev->i2c_client, regs[i].r, regs[i].len);
 533 };
 534
 535 static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
 536 {
 537         /* Values extracted from a USB trace of the Terratec Windows driver */
 538         static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
 539         static u8 reset[]          = { RESET,      0x80 };
 540         static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
 541         static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
 542         static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
 543         static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
 544         static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
 545         static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
 546         static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
 547         static u8 tuner_go[]       = { TUNER_GO, 0x01};
 548
 549         mt352_write(fe, clock_config,   sizeof(clock_config));
 550         udelay(200);
 551         mt352_write(fe, reset,          sizeof(reset));
 552         mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
 553         mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
 554         mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
 555         mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
 556         mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
 557         mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
 558         mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
 559         mt352_write(fe, tuner_go,       sizeof(tuner_go));
 560         return 0;
 561 }
 562
 563 static struct mt352_config terratec_xs_mt352_cfg = {
 564         .demod_address = (0x1e >> 1),
 565         .no_tuner = 1,
 566         .if2 = 45600,
 567         .demod_init = em28xx_mt352_terratec_xs_init,
 568 };
 569
 570 static struct tda10023_config em28xx_tda10023_config = {
 571         .demod_address = 0x0c,
 572         .invert = 1,
 573 };
 574
 575 static struct cxd2820r_config em28xx_cxd2820r_config = {
 576         .i2c_address = (0xd8 >> 1),
 577         .ts_mode = CXD2820R_TS_SERIAL,
 578
 579         /* enable LNA for DVB-T2 and DVB-C */
 580         .gpio_dvbt2[0] = CXD2820R_GPIO_E | CXD2820R_GPIO_O | CXD2820R_GPIO_L,
 581         .gpio_dvbc[0] = CXD2820R_GPIO_E | CXD2820R_GPIO_O | CXD2820R_GPIO_L,
 582 };
 583
 584 static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
 585         .output_opt = TDA18271_OUTPUT_LT_OFF,
 586         .gate = TDA18271_GATE_DIGITAL,
 587 };
 588
 589 static const struct tda10071_config em28xx_tda10071_config = {
 590         .i2c_address = 0x55, /* (0xaa >> 1) */
 591         .i2c_wr_max = 64,
 592         .ts_mode = TDA10071_TS_SERIAL,
 593         .spec_inv = 0,
 594         .xtal = 40444000, /* 40.444 MHz */
 595         .pll_multiplier = 20,
 596 };
 597
 598 static const struct a8293_config em28xx_a8293_config = {
 599         .i2c_addr = 0x08, /* (0x10 >> 1) */
 600 };
 601
 602 static struct zl10353_config em28xx_zl10353_no_i2c_gate_dev = {
 603         .demod_address = (0x1e >> 1),
 604         .disable_i2c_gate_ctrl = 1,
 605         .no_tuner = 1,
 606         .parallel_ts = 1,
 607 };
 608 static struct qt1010_config em28xx_qt1010_config = {
 609         .i2c_address = 0x62
 610
 611 };
 612
 613 /* ------------------------------------------------------------------ */
 614
 615 static int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
 616 {
 617         struct dvb_frontend *fe;
 618         struct xc2028_config cfg;
 619
 620         memset(&cfg, 0, sizeof(cfg));
 621         cfg.i2c_adap  = &dev->i2c_adap;
 622         cfg.i2c_addr  = addr;
 623
 624         if (!dev->dvb->fe[0]) {
 625                 em28xx_errdev("/2: dvb frontend not attached. "
 626                                 "Can't attach xc3028\n");
 627                 return -EINVAL;
 628         }
 629
 630         fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
 631         if (!fe) {
 632                 em28xx_errdev("/2: xc3028 attach failed\n");
 633                 dvb_frontend_detach(dev->dvb->fe[0]);
 634                 dev->dvb->fe[0] = NULL;
 635                 return -EINVAL;
 636         }
 637
 638         em28xx_info("%s/2: xc3028 attached\n", dev->name);
 639
 640         return 0;
 641 }
 642
 643 /* ------------------------------------------------------------------ */
 644
 645 static int em28xx_register_dvb(struct em28xx_dvb *dvb, struct module *module,
 646                                struct em28xx *dev, struct device *device)
 647 {
 648         int result;
 649
 650         mutex_init(&dvb->lock);
 651
 652         /* register adapter */
 653         result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
 654                                       adapter_nr);
 655         if (result < 0) {
 656                 printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
 657                        dev->name, result);
 658                 goto fail_adapter;
 659         }
 660
 661         /* Ensure all frontends negotiate bus access */
 662         dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
 663         if (dvb->fe[1])
 664                 dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
 665
 666         dvb->adapter.priv = dev;
 667
 668         /* register frontend */
 669         result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
 670         if (result < 0) {
 671                 printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
 672                        dev->name, result);
 673                 goto fail_frontend0;
 674         }
 675
 676         /* register 2nd frontend */
 677         if (dvb->fe[1]) {
 678                 result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
 679                 if (result < 0) {
 680                         printk(KERN_WARNING "%s: 2nd dvb_register_frontend failed (errno = %d)\n",
 681                                 dev->name, result);
 682                         goto fail_frontend1;
 683                 }
 684         }
 685
 686         /* register demux stuff */
 687         dvb->demux.dmx.capabilities =
 688                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 689                 DMX_MEMORY_BASED_FILTERING;
 690         dvb->demux.priv       = dvb;
 691         dvb->demux.filternum  = 256;
 692         dvb->demux.feednum    = 256;
 693         dvb->demux.start_feed = em28xx_start_feed;
 694         dvb->demux.stop_feed  = em28xx_stop_feed;
 695
 696         result = dvb_dmx_init(&dvb->demux);
 697         if (result < 0) {
 698                 printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
 699                        dev->name, result);
 700                 goto fail_dmx;
 701         }
 702
 703         dvb->dmxdev.filternum    = 256;
 704         dvb->dmxdev.demux        = &dvb->demux.dmx;
 705         dvb->dmxdev.capabilities = 0;
 706         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 707         if (result < 0) {
 708                 printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
 709                        dev->name, result);
 710                 goto fail_dmxdev;
 711         }
 712
 713         dvb->fe_hw.source = DMX_FRONTEND_0;
 714         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 715         if (result < 0) {
 716                 printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
 717                        dev->name, result);
 718                 goto fail_fe_hw;
 719         }
 720
 721         dvb->fe_mem.source = DMX_MEMORY_FE;
 722         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 723         if (result < 0) {
 724                 printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
 725                        dev->name, result);
 726                 goto fail_fe_mem;
 727         }
 728
 729         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 730         if (result < 0) {
 731                 printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
 732                        dev->name, result);
 733                 goto fail_fe_conn;
 734         }
 735
 736         /* register network adapter */
 737         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 738         return 0;
 739
 740 fail_fe_conn:
 741         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 742 fail_fe_mem:
 743         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 744 fail_fe_hw:
 745         dvb_dmxdev_release(&dvb->dmxdev);
 746 fail_dmxdev:
 747         dvb_dmx_release(&dvb->demux);
 748 fail_dmx:
 749         if (dvb->fe[1])
 750                 dvb_unregister_frontend(dvb->fe[1]);
 751         dvb_unregister_frontend(dvb->fe[0]);
 752 fail_frontend1:
 753         if (dvb->fe[1])
 754                 dvb_frontend_detach(dvb->fe[1]);
 755 fail_frontend0:
 756         dvb_frontend_detach(dvb->fe[0]);
 757         dvb_unregister_adapter(&dvb->adapter);
 758 fail_adapter:
 759         return result;
 760 }
 761
 762 static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
 763 {
 764         dvb_net_release(&dvb->net);
 765         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 766         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 767         dvb_dmxdev_release(&dvb->dmxdev);
 768         dvb_dmx_release(&dvb->demux);
 769         if (dvb->fe[1])
 770                 dvb_unregister_frontend(dvb->fe[1]);
 771         dvb_unregister_frontend(dvb->fe[0]);
 772         if (dvb->fe[1] && !dvb->dont_attach_fe1)
 773                 dvb_frontend_detach(dvb->fe[1]);
 774         dvb_frontend_detach(dvb->fe[0]);
 775         dvb_unregister_adapter(&dvb->adapter);
 776 }
 777
 778 static int em28xx_dvb_init(struct em28xx *dev)
 779 {
 780         int result = 0, mfe_shared = 0;
 781         struct em28xx_dvb *dvb;
 782
 783         if (!dev->board.has_dvb) {
 784                 /* This device does not support the extension */
 785                 printk(KERN_INFO "em28xx_dvb: This device does not support the extension\n");
 786                 return 0;
 787         }
 788
 789         dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
 790
 791         if (dvb == NULL) {
 792                 em28xx_info("em28xx_dvb: memory allocation failed\n");
 793                 return -ENOMEM;
 794         }
 795         dev->dvb = dvb;
 796         dvb->fe[0] = dvb->fe[1] = NULL;
 797
 798         mutex_lock(&dev->lock);
 799         em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 800         /* init frontend */
 801         switch (dev->model) {
 802         case EM2874_BOARD_LEADERSHIP_ISDBT:
 803                 dvb->fe[0] = dvb_attach(s921_attach,
 804                                 &sharp_isdbt, &dev->i2c_adap);
 805
 806                 if (!dvb->fe[0]) {
 807                         result = -EINVAL;
 808                         goto out_free;
 809                 }
 810
 811                 break;
 812         case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
 813         case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
 814         case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
 815         case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
 816                 dvb->fe[0] = dvb_attach(lgdt330x_attach,
 817                                            &em2880_lgdt3303_dev,
 818                                            &dev->i2c_adap);
 819                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
 820                         result = -EINVAL;
 821                         goto out_free;
 822                 }
 823                 break;
 824         case EM2880_BOARD_KWORLD_DVB_310U:
 825                 dvb->fe[0] = dvb_attach(zl10353_attach,
 826                                            &em28xx_zl10353_with_xc3028,
 827                                            &dev->i2c_adap);
 828                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
 829                         result = -EINVAL;
 830                         goto out_free;
 831                 }
 832                 break;
 833         case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
 834         case EM2882_BOARD_TERRATEC_HYBRID_XS:
 835         case EM2880_BOARD_EMPIRE_DUAL_TV:
 836                 dvb->fe[0] = dvb_attach(zl10353_attach,
 837                                            &em28xx_zl10353_xc3028_no_i2c_gate,
 838                                            &dev->i2c_adap);
 839                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
 840                         result = -EINVAL;
 841                         goto out_free;
 842                 }
 843                 break;
 844         case EM2880_BOARD_TERRATEC_HYBRID_XS:
 845         case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
 846         case EM2881_BOARD_PINNACLE_HYBRID_PRO:
 847         case EM2882_BOARD_DIKOM_DK300:
 848         case EM2882_BOARD_KWORLD_VS_DVBT:
 849                 dvb->fe[0] = dvb_attach(zl10353_attach,
 850                                            &em28xx_zl10353_xc3028_no_i2c_gate,
 851                                            &dev->i2c_adap);
 852                 if (dvb->fe[0] == NULL) {
 853                         /* This board could have either a zl10353 or a mt352.
 854                            If the chip id isn't for zl10353, try mt352 */
 855                         dvb->fe[0] = dvb_attach(mt352_attach,
 856                                                    &terratec_xs_mt352_cfg,
 857                                                    &dev->i2c_adap);
 858                 }
 859
 860                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
 861                         result = -EINVAL;
 862                         goto out_free;
 863                 }
 864                 break;
 865         case EM2870_BOARD_KWORLD_355U:
 866                 dvb->fe[0] = dvb_attach(zl10353_attach,
 867                                            &em28xx_zl10353_no_i2c_gate_dev,
 868                                            &dev->i2c_adap);
 869                 if (dvb->fe[0] != NULL)
 870                         dvb_attach(qt1010_attach, dvb->fe[0],
 871                                    &dev->i2c_adap, &em28xx_qt1010_config);
 872                 break;
 873         case EM2883_BOARD_KWORLD_HYBRID_330U:
 874         case EM2882_BOARD_EVGA_INDTUBE:
 875                 dvb->fe[0] = dvb_attach(s5h1409_attach,
 876                                            &em28xx_s5h1409_with_xc3028,
 877                                            &dev->i2c_adap);
 878                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
 879                         result = -EINVAL;
 880                         goto out_free;
 881                 }
 882                 break;
 883         case EM2882_BOARD_KWORLD_ATSC_315U:
 884                 dvb->fe[0] = dvb_attach(lgdt330x_attach,
 885                                            &em2880_lgdt3303_dev,
 886                                            &dev->i2c_adap);
 887                 if (dvb->fe[0] != NULL) {
 888                         if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
 889                                 &dev->i2c_adap, 0x61, TUNER_THOMSON_DTT761X)) {
 890                                 result = -EINVAL;
 891                                 goto out_free;
 892                         }
 893                 }
 894                 break;
 895         case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
 896         case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
 897                 dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
 898                                            &dev->i2c_adap, &dev->udev->dev);
 899                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
 900                         result = -EINVAL;
 901                         goto out_free;
 902                 }
 903                 break;
 904         case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
 905                 /* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
 906                 dvb->fe[0] = dvb_attach(tda10023_attach,
 907                         &em28xx_tda10023_config,
 908                         &dev->i2c_adap, 0x48);
 909                 if (dvb->fe[0]) {
 910                         if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
 911                                 &dev->i2c_adap, 0x60, TUNER_PHILIPS_CU1216L)) {
 912                                 result = -EINVAL;
 913                                 goto out_free;
 914                         }
 915                 }
 916                 break;
 917         case EM2870_BOARD_KWORLD_A340:
 918                 dvb->fe[0] = dvb_attach(lgdt3305_attach,
 919                                            &em2870_lgdt3304_dev,
 920                                            &dev->i2c_adap);
 921                 if (dvb->fe[0] != NULL)
 922                         dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
 923                                    &dev->i2c_adap, &kworld_a340_config);
 924                 break;
 925         case EM28174_BOARD_PCTV_290E:
 926                 dvb->fe[0] = dvb_attach(cxd2820r_attach,
 927                                         &em28xx_cxd2820r_config,
 928                                         &dev->i2c_adap);
 929                 if (dvb->fe[0]) {
 930                         /* FE 0 attach tuner */
 931                         if (!dvb_attach(tda18271_attach,
 932                                         dvb->fe[0],
 933                                         0x60,
 934                                         &dev->i2c_adap,
 935                                         &em28xx_cxd2820r_tda18271_config)) {
 936
 937                                 dvb_frontend_detach(dvb->fe[0]);
 938                                 result = -EINVAL;
 939                                 goto out_free;
 940                         }
 941                 }
 942                 break;
 943         case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
 944         {
 945                 struct xc5000_config cfg;
 946                 hauppauge_hvr930c_init(dev);
 947
 948                 dvb->fe[0] = dvb_attach(drxk_attach,
 949                                         &hauppauge_930c_drxk, &dev->i2c_adap);
 950                 if (!dvb->fe[0]) {
 951                         result = -EINVAL;
 952                         goto out_free;
 953                 }
 954                 /* FIXME: do we need a pll semaphore? */
 955                 dvb->fe[0]->sec_priv = dvb;
 956                 sema_init(&dvb->pll_mutex, 1);
 957                 dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
 958                 dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
 959
 960                 /* Attach xc5000 */
 961                 memset(&cfg, 0, sizeof(cfg));
 962                 cfg.i2c_address  = 0x61;
 963                 cfg.if_khz = 4000;
 964
 965                 if (dvb->fe[0]->ops.i2c_gate_ctrl)
 966                         dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
 967                 if (!dvb_attach(xc5000_attach, dvb->fe[0], &dev->i2c_adap,
 968                                 &cfg)) {
 969                         result = -EINVAL;
 970                         goto out_free;
 971                 }
 972                 if (dvb->fe[0]->ops.i2c_gate_ctrl)
 973                         dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
 974
 975                 break;
 976         }
 977         case EM2884_BOARD_TERRATEC_H5:
 978         case EM2884_BOARD_CINERGY_HTC_STICK:
 979                 terratec_h5_init(dev);
 980
 981                 dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk, &dev->i2c_adap);
 982                 if (!dvb->fe[0]) {
 983                         result = -EINVAL;
 984                         goto out_free;
 985                 }
 986                 /* FIXME: do we need a pll semaphore? */
 987                 dvb->fe[0]->sec_priv = dvb;
 988                 sema_init(&dvb->pll_mutex, 1);
 989                 dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
 990                 dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
 991
 992                 /* Attach tda18271 to DVB-C frontend */
 993                 if (dvb->fe[0]->ops.i2c_gate_ctrl)
 994                         dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
 995                 if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0], &dev->i2c_adap, 0x60)) {
 996                         result = -EINVAL;
 997                         goto out_free;
 998                 }
 999                 if (dvb->fe[0]->ops.i2c_gate_ctrl)
1000                         dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1001
1002                 break;
1003         case EM28174_BOARD_PCTV_460E:
1004                 /* attach demod */
1005                 dvb->fe[0] = dvb_attach(tda10071_attach,
1006                         &em28xx_tda10071_config, &dev->i2c_adap);
1007
1008                 /* attach SEC */
1009                 if (dvb->fe[0])
1010                         dvb_attach(a8293_attach, dvb->fe[0], &dev->i2c_adap,
1011                                 &em28xx_a8293_config);
1012                 break;
1013         case EM2874_BOARD_MAXMEDIA_UB425_TC:
1014                 /* attach demodulator */
1015                 dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
1016                                 &dev->i2c_adap);
1017
1018                 if (dvb->fe[0]) {
1019                         /* disable I2C-gate */
1020                         dvb->fe[0]->ops.i2c_gate_ctrl = NULL;
1021
1022                         /* attach tuner */
1023                         if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0],
1024                                         &dev->i2c_adap, 0x60)) {
1025                                 dvb_frontend_detach(dvb->fe[0]);
1026                                 result = -EINVAL;
1027                                 goto out_free;
1028                         }
1029                 }
1030
1031                 /* TODO: we need drx-3913k firmware in order to support DVB-T */
1032                 em28xx_info("MaxMedia UB425-TC: only DVB-C supported by that " \
1033                                 "driver version\n");
1034
1035                 break;
1036         case EM2884_BOARD_PCTV_520E:
1037                 pctv_520e_init(dev);
1038
1039                 /* attach demodulator */
1040                 dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
1041                                 &dev->i2c_adap);
1042
1043                 if (dvb->fe[0]) {
1044                         /* attach tuner */
1045                         if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1046                                         &dev->i2c_adap,
1047                                         &em28xx_cxd2820r_tda18271_config)) {
1048                                 dvb_frontend_detach(dvb->fe[0]);
1049                                 result = -EINVAL;
1050                                 goto out_free;
1051                         }
1052                 }
1053                 break;
1054         case EM2884_BOARD_PCTV_510E:
1055         case EM2884_BOARD_PCTV_520E:
1056                 pctv_520e_init(dev);
1057
1058                 /* attach demodulator */
1059                 dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
1060                                 &dev->i2c_adap);
1061
1062                 if (dvb->fe[0]) {
1063                         /* attach tuner */
1064                         if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1065                                         &dev->i2c_adap,
1066                                         &em28xx_cxd2820r_tda18271_config)) {
1067                                 dvb_frontend_detach(dvb->fe[0]);
1068                                 result = -EINVAL;
1069                                 goto out_free;
1070                         }
1071                 }
1072                 break;
1073         default:
1074                 em28xx_errdev("/2: The frontend of your DVB/ATSC card"
1075                                 " isn't supported yet\n");
1076                 break;
1077         }
1078         if (NULL == dvb->fe[0]) {
1079                 em28xx_errdev("/2: frontend initialization failed\n");
1080                 result = -EINVAL;
1081                 goto out_free;
1082         }
1083         /* define general-purpose callback pointer */
1084         dvb->fe[0]->callback = em28xx_tuner_callback;
1085         if (dvb->fe[1])
1086                 dvb->fe[1]->callback = em28xx_tuner_callback;
1087
1088         /* register everything */
1089         result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
1090
1091         if (result < 0)
1092                 goto out_free;
1093
1094         /* MFE lock */
1095         dvb->adapter.mfe_shared = mfe_shared;
1096
1097         em28xx_info("Successfully loaded em28xx-dvb\n");
1098 ret:
1099         em28xx_set_mode(dev, EM28XX_SUSPEND);
1100         mutex_unlock(&dev->lock);
1101         return result;
1102
1103 out_free:
1104         kfree(dvb);
1105         dev->dvb = NULL;
1106         goto ret;
1107 }
1108
1109 static inline void prevent_sleep(struct dvb_frontend_ops *ops)
1110 {
1111         ops->set_voltage = NULL;
1112         ops->sleep = NULL;
1113         ops->tuner_ops.sleep = NULL;
1114 }
1115
1116 static int em28xx_dvb_fini(struct em28xx *dev)
1117 {
1118         if (!dev->board.has_dvb) {
1119                 /* This device does not support the extension */
1120                 return 0;
1121         }
1122
1123         if (dev->dvb) {
1124                 struct em28xx_dvb *dvb = dev->dvb;
1125
1126                 if (dev->state & DEV_DISCONNECTED) {
1127                         /* We cannot tell the device to sleep
1128                          * once it has been unplugged. */
1129                         if (dvb->fe[0])
1130                                 prevent_sleep(&dvb->fe[0]->ops);
1131                         if (dvb->fe[1])
1132                                 prevent_sleep(&dvb->fe[1]->ops);
1133                 }
1134
1135                 em28xx_unregister_dvb(dvb);
1136                 kfree(dvb);
1137                 dev->dvb = NULL;
1138         }
1139
1140         return 0;
1141 }
1142
1143 static struct em28xx_ops dvb_ops = {
1144         .id   = EM28XX_DVB,
1145         .name = "Em28xx dvb Extension",
1146         .init = em28xx_dvb_init,
1147         .fini = em28xx_dvb_fini,
1148 };
1149
1150 static int __init em28xx_dvb_register(void)
1151 {
1152         return em28xx_register_extension(&dvb_ops);
1153 }
1154
1155 static void __exit em28xx_dvb_unregister(void)
1156 {
1157         em28xx_unregister_extension(&dvb_ops);
1158 }
1159
1160 module_init(em28xx_dvb_register);
1161 module_exit(em28xx_dvb_unregister);