drivers/media/usb/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  (c) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
  14
  15  Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
  16         (c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
  17         (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
  18
  19  This program is free software; you can redistribute it and/or modify
  20  it under the terms of the GNU General Public License as published by
  21  the Free Software Foundation; either version 2 of the License.
  22  */
  23
  24 #include <linux/kernel.h>
  25 #include <linux/slab.h>
  26 #include <linux/usb.h>
  27
  28 #include "em28xx.h"
  29 #include <media/v4l2-common.h>
  30 #include <dvb_demux.h>
  31 #include <dvb_net.h>
  32 #include <dmxdev.h>
  33 #include <media/tuner.h>
  34 #include "tuner-simple.h"
  35 #include <linux/gpio.h>
  36
  37 #include "lgdt330x.h"
  38 #include "lgdt3305.h"
  39 #include "zl10353.h"
  40 #include "s5h1409.h"
  41 #include "mt352.h"
  42 #include "mt352_priv.h" /* FIXME */
  43 #include "tda1002x.h"
  44 #include "tda18271.h"
  45 #include "s921.h"
  46 #include "drxd.h"
  47 #include "cxd2820r.h"
  48 #include "tda18271c2dd.h"
  49 #include "drxk.h"
  50 #include "tda10071.h"
  51 #include "a8293.h"
  52 #include "qt1010.h"
  53 #include "mb86a20s.h"
  54
  55 MODULE_DESCRIPTION("driver for em28xx based DVB cards");
  56 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
  57 MODULE_LICENSE("GPL");
  58
  59 static unsigned int debug;
  60 module_param(debug, int, 0644);
  61 MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
  62
  63 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  64
  65 #define dprintk(level, fmt, arg...) do {                        \
  66 if (debug >= level)                                             \
  67         printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
  68 } while (0)
  69
  70 struct em28xx_dvb {
  71         struct dvb_frontend        *fe[2];
  72
  73         /* feed count management */
  74         struct mutex               lock;
  75         int                        nfeeds;
  76
  77         /* general boilerplate stuff */
  78         struct dvb_adapter         adapter;
  79         struct dvb_demux           demux;
  80         struct dmxdev              dmxdev;
  81         struct dmx_frontend        fe_hw;
  82         struct dmx_frontend        fe_mem;
  83         struct dvb_net             net;
  84
  85         /* Due to DRX-K - probably need changes */
  86         int (*gate_ctrl)(struct dvb_frontend *, int);
  87         struct semaphore      pll_mutex;
  88         bool                    dont_attach_fe1;
  89         int                     lna_gpio;
  90 };
  91
  92
  93 static inline void print_err_status(struct em28xx *dev,
  94                                      int packet, int status)
  95 {
  96         char *errmsg = "Unknown";
  97
  98         switch (status) {
  99         case -ENOENT:
 100                 errmsg = "unlinked synchronuously";
 101                 break;
 102         case -ECONNRESET:
 103                 errmsg = "unlinked asynchronuously";
 104                 break;
 105         case -ENOSR:
 106                 errmsg = "Buffer error (overrun)";
 107                 break;
 108         case -EPIPE:
 109                 errmsg = "Stalled (device not responding)";
 110                 break;
 111         case -EOVERFLOW:
 112                 errmsg = "Babble (bad cable?)";
 113                 break;
 114         case -EPROTO:
 115                 errmsg = "Bit-stuff error (bad cable?)";
 116                 break;
 117         case -EILSEQ:
 118                 errmsg = "CRC/Timeout (could be anything)";
 119                 break;
 120         case -ETIME:
 121                 errmsg = "Device does not respond";
 122                 break;
 123         }
 124         if (packet < 0) {
 125                 dprintk(1, "URB status %d [%s].\n", status, errmsg);
 126         } else {
 127                 dprintk(1, "URB packet %d, status %d [%s].\n",
 128                         packet, status, errmsg);
 129         }
 130 }
 131
 132 static inline int em28xx_dvb_urb_data_copy(struct em28xx *dev, struct urb *urb)
 133 {
 134         int xfer_bulk, num_packets, i;
 135
 136         if (!dev)
 137                 return 0;
 138
 139         if (dev->disconnected)
 140                 return 0;
 141
 142         if (urb->status < 0)
 143                 print_err_status(dev, -1, urb->status);
 144
 145         xfer_bulk = usb_pipebulk(urb->pipe);
 146
 147         if (xfer_bulk) /* bulk */
 148                 num_packets = 1;
 149         else /* isoc */
 150                 num_packets = urb->number_of_packets;
 151
 152         for (i = 0; i < num_packets; i++) {
 153                 if (xfer_bulk) {
 154                         if (urb->status < 0) {
 155                                 print_err_status(dev, i, urb->status);
 156                                 if (urb->status != -EPROTO)
 157                                         continue;
 158                         }
 159                         dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
 160                                         urb->actual_length);
 161                 } else {
 162                         if (urb->iso_frame_desc[i].status < 0) {
 163                                 print_err_status(dev, i,
 164                                                  urb->iso_frame_desc[i].status);
 165                                 if (urb->iso_frame_desc[i].status != -EPROTO)
 166                                         continue;
 167                         }
 168                         dvb_dmx_swfilter(&dev->dvb->demux,
 169                                          urb->transfer_buffer +
 170                                          urb->iso_frame_desc[i].offset,
 171                                          urb->iso_frame_desc[i].actual_length);
 172                 }
 173         }
 174
 175         return 0;
 176 }
 177
 178 static int em28xx_start_streaming(struct em28xx_dvb *dvb)
 179 {
 180         int rc;
 181         struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
 182         struct em28xx *dev = i2c_bus->dev;
 183         int dvb_max_packet_size, packet_multiplier, dvb_alt;
 184
 185         if (dev->dvb_xfer_bulk) {
 186                 if (!dev->dvb_ep_bulk)
 187                         return -ENODEV;
 188                 dvb_max_packet_size = 512; /* USB 2.0 spec */
 189                 packet_multiplier = EM28XX_DVB_BULK_PACKET_MULTIPLIER;
 190                 dvb_alt = 0;
 191         } else { /* isoc */
 192                 if (!dev->dvb_ep_isoc)
 193                         return -ENODEV;
 194                 dvb_max_packet_size = dev->dvb_max_pkt_size_isoc;
 195                 if (dvb_max_packet_size < 0)
 196                         return dvb_max_packet_size;
 197                 packet_multiplier = EM28XX_DVB_NUM_ISOC_PACKETS;
 198                 dvb_alt = dev->dvb_alt_isoc;
 199         }
 200
 201         usb_set_interface(dev->udev, 0, dvb_alt);
 202         rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 203         if (rc < 0)
 204                 return rc;
 205
 206         dprintk(1, "Using %d buffers each with %d x %d bytes\n",
 207                 EM28XX_DVB_NUM_BUFS,
 208                 packet_multiplier,
 209                 dvb_max_packet_size);
 210
 211         return em28xx_init_usb_xfer(dev, EM28XX_DIGITAL_MODE,
 212                                     dev->dvb_xfer_bulk,
 213                                     EM28XX_DVB_NUM_BUFS,
 214                                     dvb_max_packet_size,
 215                                     packet_multiplier,
 216                                     em28xx_dvb_urb_data_copy);
 217 }
 218
 219 static int em28xx_stop_streaming(struct em28xx_dvb *dvb)
 220 {
 221         struct em28xx_i2c_bus *i2c_bus = dvb->adapter.priv;
 222         struct em28xx *dev = i2c_bus->dev;
 223
 224         em28xx_stop_urbs(dev);
 225
 226         return 0;
 227 }
 228
 229 static int em28xx_start_feed(struct dvb_demux_feed *feed)
 230 {
 231         struct dvb_demux *demux  = feed->demux;
 232         struct em28xx_dvb *dvb = demux->priv;
 233         int rc, ret;
 234
 235         if (!demux->dmx.frontend)
 236                 return -EINVAL;
 237
 238         mutex_lock(&dvb->lock);
 239         dvb->nfeeds++;
 240         rc = dvb->nfeeds;
 241
 242         if (dvb->nfeeds == 1) {
 243                 ret = em28xx_start_streaming(dvb);
 244                 if (ret < 0)
 245                         rc = ret;
 246         }
 247
 248         mutex_unlock(&dvb->lock);
 249         return rc;
 250 }
 251
 252 static int em28xx_stop_feed(struct dvb_demux_feed *feed)
 253 {
 254         struct dvb_demux *demux  = feed->demux;
 255         struct em28xx_dvb *dvb = demux->priv;
 256         int err = 0;
 257
 258         mutex_lock(&dvb->lock);
 259         dvb->nfeeds--;
 260
 261         if (0 == dvb->nfeeds)
 262                 err = em28xx_stop_streaming(dvb);
 263
 264         mutex_unlock(&dvb->lock);
 265         return err;
 266 }
 267
 268
 269
 270 /* ------------------------------------------------------------------ */
 271 static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
 272 {
 273         struct em28xx_i2c_bus *i2c_bus = fe->dvb->priv;
 274         struct em28xx *dev = i2c_bus->dev;
 275
 276         if (acquire)
 277                 return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 278         else
 279                 return em28xx_set_mode(dev, EM28XX_SUSPEND);
 280 }
 281
 282 /* ------------------------------------------------------------------ */
 283
 284 static struct lgdt330x_config em2880_lgdt3303_dev = {
 285         .demod_address = 0x0e,
 286         .demod_chip = LGDT3303,
 287 };
 288
 289 static struct lgdt3305_config em2870_lgdt3304_dev = {
 290         .i2c_addr           = 0x0e,
 291         .demod_chip         = LGDT3304,
 292         .spectral_inversion = 1,
 293         .deny_i2c_rptr      = 1,
 294         .mpeg_mode          = LGDT3305_MPEG_PARALLEL,
 295         .tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
 296         .tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
 297         .vsb_if_khz         = 3250,
 298         .qam_if_khz         = 4000,
 299 };
 300
 301 static struct s921_config sharp_isdbt = {
 302         .demod_address = 0x30 >> 1
 303 };
 304
 305 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
 306         .demod_address = (0x1e >> 1),
 307         .no_tuner = 1,
 308         .parallel_ts = 1,
 309         .if2 = 45600,
 310 };
 311
 312 static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
 313         .demod_address = 0x32 >> 1,
 314         .output_mode   = S5H1409_PARALLEL_OUTPUT,
 315         .gpio          = S5H1409_GPIO_OFF,
 316         .inversion     = S5H1409_INVERSION_OFF,
 317         .status_mode   = S5H1409_DEMODLOCKING,
 318         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
 319 };
 320
 321 static struct tda18271_std_map kworld_a340_std_map = {
 322         .atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
 323                       .if_lvl = 1, .rfagc_top = 0x37, },
 324         .qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
 325                       .if_lvl = 1, .rfagc_top = 0x37, },
 326 };
 327
 328 static struct tda18271_config kworld_a340_config = {
 329         .std_map           = &kworld_a340_std_map,
 330 };
 331
 332 static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
 333         .demod_address = (0x1e >> 1),
 334         .no_tuner = 1,
 335         .disable_i2c_gate_ctrl = 1,
 336         .parallel_ts = 1,
 337         .if2 = 45600,
 338 };
 339
 340 static struct drxd_config em28xx_drxd = {
 341         .demod_address = 0x70,
 342         .demod_revision = 0xa2,
 343         .pll_type = DRXD_PLL_NONE,
 344         .clock = 12000,
 345         .insert_rs_byte = 1,
 346         .IF = 42800000,
 347         .disable_i2c_gate_ctrl = 1,
 348 };
 349
 350 static struct drxk_config terratec_h5_drxk = {
 351         .adr = 0x29,
 352         .single_master = 1,
 353         .no_i2c_bridge = 1,
 354         .microcode_name = "dvb-usb-terratec-h5-drxk.fw",
 355         .qam_demod_parameter_count = 2,
 356         .load_firmware_sync = true,
 357 };
 358
 359 static struct drxk_config hauppauge_930c_drxk = {
 360         .adr = 0x29,
 361         .single_master = 1,
 362         .no_i2c_bridge = 1,
 363         .microcode_name = "dvb-usb-hauppauge-hvr930c-drxk.fw",
 364         .chunk_size = 56,
 365         .qam_demod_parameter_count = 2,
 366         .load_firmware_sync = true,
 367 };
 368
 369 static struct drxk_config terratec_htc_stick_drxk = {
 370         .adr = 0x29,
 371         .single_master = 1,
 372         .no_i2c_bridge = 1,
 373         .microcode_name = "dvb-usb-terratec-htc-stick-drxk.fw",
 374         .chunk_size = 54,
 375         .qam_demod_parameter_count = 2,
 376         /* Required for the antenna_gpio to disable LNA. */
 377         .antenna_dvbt = true,
 378         /* The windows driver uses the same. This will disable LNA. */
 379         .antenna_gpio = 0x6,
 380         .load_firmware_sync = true,
 381 };
 382
 383 static struct drxk_config maxmedia_ub425_tc_drxk = {
 384         .adr = 0x29,
 385         .single_master = 1,
 386         .no_i2c_bridge = 1,
 387         .load_firmware_sync = true,
 388 };
 389
 390 static struct drxk_config pctv_520e_drxk = {
 391         .adr = 0x29,
 392         .single_master = 1,
 393         .microcode_name = "dvb-demod-drxk-pctv.fw",
 394         .qam_demod_parameter_count = 2,
 395         .chunk_size = 58,
 396         .antenna_dvbt = true, /* disable LNA */
 397         .antenna_gpio = (1 << 2), /* disable LNA */
 398         .load_firmware_sync = true,
 399 };
 400
 401 static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
 402 {
 403         struct em28xx_dvb *dvb = fe->sec_priv;
 404         int status;
 405
 406         if (!dvb)
 407                 return -EINVAL;
 408
 409         if (enable) {
 410                 down(&dvb->pll_mutex);
 411                 status = dvb->gate_ctrl(fe, 1);
 412         } else {
 413                 status = dvb->gate_ctrl(fe, 0);
 414                 up(&dvb->pll_mutex);
 415         }
 416         return status;
 417 }
 418
 419 static void hauppauge_hvr930c_init(struct em28xx *dev)
 420 {
 421         int i;
 422
 423         struct em28xx_reg_seq hauppauge_hvr930c_init[] = {
 424                 {EM2874_R80_GPIO_P0_CTRL,       0xff,   0xff,   0x65},
 425                 {EM2874_R80_GPIO_P0_CTRL,       0xfb,   0xff,   0x32},
 426                 {EM2874_R80_GPIO_P0_CTRL,       0xff,   0xff,   0xb8},
 427                 { -1,                   -1,     -1,     -1},
 428         };
 429         struct em28xx_reg_seq hauppauge_hvr930c_end[] = {
 430                 {EM2874_R80_GPIO_P0_CTRL,       0xef,   0xff,   0x01},
 431                 {EM2874_R80_GPIO_P0_CTRL,       0xaf,   0xff,   0x65},
 432                 {EM2874_R80_GPIO_P0_CTRL,       0xef,   0xff,   0x76},
 433                 {EM2874_R80_GPIO_P0_CTRL,       0xef,   0xff,   0x01},
 434                 {EM2874_R80_GPIO_P0_CTRL,       0xcf,   0xff,   0x0b},
 435                 {EM2874_R80_GPIO_P0_CTRL,       0xef,   0xff,   0x40},
 436
 437                 {EM2874_R80_GPIO_P0_CTRL,       0xcf,   0xff,   0x65},
 438                 {EM2874_R80_GPIO_P0_CTRL,       0xef,   0xff,   0x65},
 439                 {EM2874_R80_GPIO_P0_CTRL,       0xcf,   0xff,   0x0b},
 440                 {EM2874_R80_GPIO_P0_CTRL,       0xef,   0xff,   0x65},
 441
 442                 { -1,                   -1,     -1,     -1},
 443         };
 444
 445         struct {
 446                 unsigned char r[4];
 447                 int len;
 448         } regs[] = {
 449                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 450                 {{ 0x01, 0x02 }, 2},
 451                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 452                 {{ 0x01, 0x00 }, 2},
 453                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 454                 {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
 455                 {{ 0x01, 0x00 }, 2},
 456                 {{ 0x01, 0x00, 0x73, 0xaf }, 4},
 457                 {{ 0x04, 0x00 }, 2},
 458                 {{ 0x00, 0x04 }, 2},
 459                 {{ 0x00, 0x04, 0x00, 0x0a }, 4},
 460                 {{ 0x04, 0x14 }, 2},
 461                 {{ 0x04, 0x14, 0x00, 0x00 }, 4},
 462         };
 463
 464         em28xx_gpio_set(dev, hauppauge_hvr930c_init);
 465         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
 466         msleep(10);
 467         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
 468         msleep(10);
 469
 470         dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
 471
 472         for (i = 0; i < ARRAY_SIZE(regs); i++)
 473                 i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
 474         em28xx_gpio_set(dev, hauppauge_hvr930c_end);
 475
 476         msleep(100);
 477
 478         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
 479         msleep(30);
 480
 481         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
 482         msleep(10);
 483
 484 }
 485
 486 static void terratec_h5_init(struct em28xx *dev)
 487 {
 488         int i;
 489         struct em28xx_reg_seq terratec_h5_init[] = {
 490                 {EM2820_R08_GPIO_CTRL,          0xff,   0xff,   10},
 491                 {EM2874_R80_GPIO_P0_CTRL,       0xf6,   0xff,   100},
 492                 {EM2874_R80_GPIO_P0_CTRL,       0xf2,   0xff,   50},
 493                 {EM2874_R80_GPIO_P0_CTRL,       0xf6,   0xff,   100},
 494                 { -1,                   -1,     -1,     -1},
 495         };
 496         struct em28xx_reg_seq terratec_h5_end[] = {
 497                 {EM2874_R80_GPIO_P0_CTRL,       0xe6,   0xff,   100},
 498                 {EM2874_R80_GPIO_P0_CTRL,       0xa6,   0xff,   50},
 499                 {EM2874_R80_GPIO_P0_CTRL,       0xe6,   0xff,   100},
 500                 { -1,                   -1,     -1,     -1},
 501         };
 502         struct {
 503                 unsigned char r[4];
 504                 int len;
 505         } regs[] = {
 506                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 507                 {{ 0x01, 0x02 }, 2},
 508                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 509                 {{ 0x01, 0x00 }, 2},
 510                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 511                 {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
 512                 {{ 0x01, 0x00 }, 2},
 513                 {{ 0x01, 0x00, 0x73, 0xaf }, 4},
 514                 {{ 0x04, 0x00 }, 2},
 515                 {{ 0x00, 0x04 }, 2},
 516                 {{ 0x00, 0x04, 0x00, 0x0a }, 4},
 517                 {{ 0x04, 0x14 }, 2},
 518                 {{ 0x04, 0x14, 0x00, 0x00 }, 4},
 519         };
 520
 521         em28xx_gpio_set(dev, terratec_h5_init);
 522         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
 523         msleep(10);
 524         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x45);
 525         msleep(10);
 526
 527         dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
 528
 529         for (i = 0; i < ARRAY_SIZE(regs); i++)
 530                 i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
 531         em28xx_gpio_set(dev, terratec_h5_end);
 532 };
 533
 534 static void terratec_htc_stick_init(struct em28xx *dev)
 535 {
 536         int i;
 537
 538         /*
 539          * GPIO configuration:
 540          * 0xff: unknown (does not affect DVB-T).
 541          * 0xf6: DRX-K (demodulator).
 542          * 0xe6: unknown (does not affect DVB-T).
 543          * 0xb6: unknown (does not affect DVB-T).
 544          */
 545         struct em28xx_reg_seq terratec_htc_stick_init[] = {
 546                 {EM2820_R08_GPIO_CTRL,          0xff,   0xff,   10},
 547                 {EM2874_R80_GPIO_P0_CTRL,       0xf6,   0xff,   100},
 548                 {EM2874_R80_GPIO_P0_CTRL,       0xe6,   0xff,   50},
 549                 {EM2874_R80_GPIO_P0_CTRL,       0xf6,   0xff,   100},
 550                 { -1,                   -1,     -1,     -1},
 551         };
 552         struct em28xx_reg_seq terratec_htc_stick_end[] = {
 553                 {EM2874_R80_GPIO_P0_CTRL,       0xb6,   0xff,   100},
 554                 {EM2874_R80_GPIO_P0_CTRL,       0xf6,   0xff,   50},
 555                 { -1,                   -1,     -1,     -1},
 556         };
 557
 558         /*
 559          * Init the analog decoder (not yet supported), but
 560          * it's probably still a good idea.
 561          */
 562         struct {
 563                 unsigned char r[4];
 564                 int len;
 565         } regs[] = {
 566                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 567                 {{ 0x01, 0x02 }, 2},
 568                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 569                 {{ 0x01, 0x00 }, 2},
 570                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 571         };
 572
 573         em28xx_gpio_set(dev, terratec_htc_stick_init);
 574
 575         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
 576         msleep(10);
 577         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
 578         msleep(10);
 579
 580         dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
 581
 582         for (i = 0; i < ARRAY_SIZE(regs); i++)
 583                 i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
 584
 585         em28xx_gpio_set(dev, terratec_htc_stick_end);
 586 };
 587
 588 static void terratec_htc_usb_xs_init(struct em28xx *dev)
 589 {
 590         int i;
 591
 592         struct em28xx_reg_seq terratec_htc_usb_xs_init[] = {
 593                 {EM2820_R08_GPIO_CTRL,          0xff,   0xff,   10},
 594                 {EM2874_R80_GPIO_P0_CTRL,       0xb2,   0xff,   100},
 595                 {EM2874_R80_GPIO_P0_CTRL,       0xb2,   0xff,   50},
 596                 {EM2874_R80_GPIO_P0_CTRL,       0xb6,   0xff,   100},
 597                 { -1,                   -1,     -1,     -1},
 598         };
 599         struct em28xx_reg_seq terratec_htc_usb_xs_end[] = {
 600                 {EM2874_R80_GPIO_P0_CTRL,       0xa6,   0xff,   100},
 601                 {EM2874_R80_GPIO_P0_CTRL,       0xa6,   0xff,   50},
 602                 {EM2874_R80_GPIO_P0_CTRL,       0xe6,   0xff,   100},
 603                 { -1,                   -1,     -1,     -1},
 604         };
 605
 606         /*
 607          * Init the analog decoder (not yet supported), but
 608          * it's probably still a good idea.
 609          */
 610         struct {
 611                 unsigned char r[4];
 612                 int len;
 613         } regs[] = {
 614                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 615                 {{ 0x01, 0x02 }, 2},
 616                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 617                 {{ 0x01, 0x00 }, 2},
 618                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 619                 {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
 620                 {{ 0x01, 0x00 }, 2},
 621                 {{ 0x01, 0x00, 0x73, 0xaf }, 4},
 622                 {{ 0x04, 0x00 }, 2},
 623                 {{ 0x00, 0x04 }, 2},
 624                 {{ 0x00, 0x04, 0x00, 0x0a }, 4},
 625                 {{ 0x04, 0x14 }, 2},
 626                 {{ 0x04, 0x14, 0x00, 0x00 }, 4},
 627         };
 628
 629         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
 630
 631         em28xx_gpio_set(dev, terratec_htc_usb_xs_init);
 632
 633         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x40);
 634         msleep(10);
 635         em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, 0x44);
 636         msleep(10);
 637
 638         dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1;
 639
 640         for (i = 0; i < ARRAY_SIZE(regs); i++)
 641                 i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
 642
 643         em28xx_gpio_set(dev, terratec_htc_usb_xs_end);
 644 };
 645
 646 static void pctv_520e_init(struct em28xx *dev)
 647 {
 648         /*
 649          * Init AVF4910B analog decoder. Looks like I2C traffic to
 650          * digital demodulator and tuner are routed via AVF4910B.
 651          */
 652         int i;
 653         struct {
 654                 unsigned char r[4];
 655                 int len;
 656         } regs[] = {
 657                 {{ 0x06, 0x02, 0x00, 0x31 }, 4},
 658                 {{ 0x01, 0x02 }, 2},
 659                 {{ 0x01, 0x02, 0x00, 0xc6 }, 4},
 660                 {{ 0x01, 0x00 }, 2},
 661                 {{ 0x01, 0x00, 0xff, 0xaf }, 4},
 662                 {{ 0x01, 0x00, 0x03, 0xa0 }, 4},
 663                 {{ 0x01, 0x00 }, 2},
 664                 {{ 0x01, 0x00, 0x73, 0xaf }, 4},
 665         };
 666
 667         dev->i2c_client[dev->def_i2c_bus].addr = 0x82 >> 1; /* 0x41 */
 668
 669         for (i = 0; i < ARRAY_SIZE(regs); i++)
 670                 i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], regs[i].r, regs[i].len);
 671 };
 672
 673 static int em28xx_pctv_290e_set_lna(struct dvb_frontend *fe)
 674 {
 675         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 676         struct em28xx *dev = fe->dvb->priv;
 677 #ifdef CONFIG_GPIOLIB
 678         struct em28xx_dvb *dvb = dev->dvb;
 679         int ret;
 680         unsigned long flags;
 681
 682         if (c->lna == 1)
 683                 flags = GPIOF_OUT_INIT_HIGH; /* enable LNA */
 684         else
 685                 flags = GPIOF_OUT_INIT_LOW; /* disable LNA */
 686
 687         ret = gpio_request_one(dvb->lna_gpio, flags, NULL);
 688         if (ret)
 689                 em28xx_errdev("gpio request failed %d\n", ret);
 690         else
 691                 gpio_free(dvb->lna_gpio);
 692
 693         return ret;
 694 #else
 695         dev_warn(&dev->udev->dev, "%s: LNA control is disabled (lna=%u)\n",
 696                         KBUILD_MODNAME, c->lna);
 697         return 0;
 698 #endif
 699 }
 700
 701 static int em28xx_mt352_terratec_xs_init(struct dvb_frontend *fe)
 702 {
 703         /* Values extracted from a USB trace of the Terratec Windows driver */
 704         static u8 clock_config[]   = { CLOCK_CTL,  0x38, 0x2c };
 705         static u8 reset[]          = { RESET,      0x80 };
 706         static u8 adc_ctl_1_cfg[]  = { ADC_CTL_1,  0x40 };
 707         static u8 agc_cfg[]        = { AGC_TARGET, 0x28, 0xa0 };
 708         static u8 input_freq_cfg[] = { INPUT_FREQ_1, 0x31, 0xb8 };
 709         static u8 rs_err_cfg[]     = { RS_ERR_PER_1, 0x00, 0x4d };
 710         static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };
 711         static u8 trl_nom_cfg[]    = { TRL_NOMINAL_RATE_1, 0x64, 0x00 };
 712         static u8 tps_given_cfg[]  = { TPS_GIVEN_1, 0x40, 0x80, 0x50 };
 713         static u8 tuner_go[]       = { TUNER_GO, 0x01};
 714
 715         mt352_write(fe, clock_config,   sizeof(clock_config));
 716         udelay(200);
 717         mt352_write(fe, reset,          sizeof(reset));
 718         mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));
 719         mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
 720         mt352_write(fe, input_freq_cfg, sizeof(input_freq_cfg));
 721         mt352_write(fe, rs_err_cfg,     sizeof(rs_err_cfg));
 722         mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
 723         mt352_write(fe, trl_nom_cfg,    sizeof(trl_nom_cfg));
 724         mt352_write(fe, tps_given_cfg,  sizeof(tps_given_cfg));
 725         mt352_write(fe, tuner_go,       sizeof(tuner_go));
 726         return 0;
 727 }
 728
 729 static struct mt352_config terratec_xs_mt352_cfg = {
 730         .demod_address = (0x1e >> 1),
 731         .no_tuner = 1,
 732         .if2 = 45600,
 733         .demod_init = em28xx_mt352_terratec_xs_init,
 734 };
 735
 736 static struct tda10023_config em28xx_tda10023_config = {
 737         .demod_address = 0x0c,
 738         .invert = 1,
 739 };
 740
 741 static struct cxd2820r_config em28xx_cxd2820r_config = {
 742         .i2c_address = (0xd8 >> 1),
 743         .ts_mode = CXD2820R_TS_SERIAL,
 744 };
 745
 746 static struct tda18271_config em28xx_cxd2820r_tda18271_config = {
 747         .output_opt = TDA18271_OUTPUT_LT_OFF,
 748         .gate = TDA18271_GATE_DIGITAL,
 749 };
 750
 751 static const struct tda10071_config em28xx_tda10071_config = {
 752         .demod_i2c_addr = 0x55, /* (0xaa >> 1) */
 753         .tuner_i2c_addr = 0x14,
 754         .i2c_wr_max = 64,
 755         .ts_mode = TDA10071_TS_SERIAL,
 756         .spec_inv = 0,
 757         .xtal = 40444000, /* 40.444 MHz */
 758         .pll_multiplier = 20,
 759 };
 760
 761 static const struct a8293_config em28xx_a8293_config = {
 762         .i2c_addr = 0x08, /* (0x10 >> 1) */
 763 };
 764
 765 static struct zl10353_config em28xx_zl10353_no_i2c_gate_dev = {
 766         .demod_address = (0x1e >> 1),
 767         .disable_i2c_gate_ctrl = 1,
 768         .no_tuner = 1,
 769         .parallel_ts = 1,
 770 };
 771 static struct qt1010_config em28xx_qt1010_config = {
 772         .i2c_address = 0x62
 773 };
 774
 775 static const struct mb86a20s_config c3tech_duo_mb86a20s_config = {
 776         .demod_address = 0x10,
 777         .is_serial = true,
 778 };
 779
 780 static struct tda18271_std_map mb86a20s_tda18271_config = {
 781         .dvbt_6   = { .if_freq = 4000, .agc_mode = 3, .std = 4,
 782                       .if_lvl = 1, .rfagc_top = 0x37, },
 783 };
 784
 785 static struct tda18271_config c3tech_duo_tda18271_config = {
 786         .std_map = &mb86a20s_tda18271_config,
 787         .gate    = TDA18271_GATE_DIGITAL,
 788         .small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
 789 };
 790
 791
 792 /* ------------------------------------------------------------------ */
 793
 794 static int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
 795 {
 796         struct dvb_frontend *fe;
 797         struct xc2028_config cfg;
 798
 799         memset(&cfg, 0, sizeof(cfg));
 800         cfg.i2c_adap  = &dev->i2c_adap[dev->def_i2c_bus];
 801         cfg.i2c_addr  = addr;
 802
 803         if (!dev->dvb->fe[0]) {
 804                 em28xx_errdev("/2: dvb frontend not attached. "
 805                                 "Can't attach xc3028\n");
 806                 return -EINVAL;
 807         }
 808
 809         fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
 810         if (!fe) {
 811                 em28xx_errdev("/2: xc3028 attach failed\n");
 812                 dvb_frontend_detach(dev->dvb->fe[0]);
 813                 dev->dvb->fe[0] = NULL;
 814                 return -EINVAL;
 815         }
 816
 817         em28xx_info("%s/2: xc3028 attached\n", dev->name);
 818
 819         return 0;
 820 }
 821
 822 /* ------------------------------------------------------------------ */
 823
 824 static int em28xx_register_dvb(struct em28xx_dvb *dvb, struct module *module,
 825                                struct em28xx *dev, struct device *device)
 826 {
 827         int result;
 828
 829         mutex_init(&dvb->lock);
 830
 831         /* register adapter */
 832         result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
 833                                       adapter_nr);
 834         if (result < 0) {
 835                 printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
 836                        dev->name, result);
 837                 goto fail_adapter;
 838         }
 839
 840         /* Ensure all frontends negotiate bus access */
 841         dvb->fe[0]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
 842         if (dvb->fe[1])
 843                 dvb->fe[1]->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
 844
 845         dvb->adapter.priv = &dev->i2c_bus[dev->def_i2c_bus];
 846
 847         /* register frontend */
 848         result = dvb_register_frontend(&dvb->adapter, dvb->fe[0]);
 849         if (result < 0) {
 850                 printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
 851                        dev->name, result);
 852                 goto fail_frontend0;
 853         }
 854
 855         /* register 2nd frontend */
 856         if (dvb->fe[1]) {
 857                 result = dvb_register_frontend(&dvb->adapter, dvb->fe[1]);
 858                 if (result < 0) {
 859                         printk(KERN_WARNING "%s: 2nd dvb_register_frontend failed (errno = %d)\n",
 860                                 dev->name, result);
 861                         goto fail_frontend1;
 862                 }
 863         }
 864
 865         /* register demux stuff */
 866         dvb->demux.dmx.capabilities =
 867                 DMX_TS_FILTERING | DMX_SECTION_FILTERING |
 868                 DMX_MEMORY_BASED_FILTERING;
 869         dvb->demux.priv       = dvb;
 870         dvb->demux.filternum  = 256;
 871         dvb->demux.feednum    = 256;
 872         dvb->demux.start_feed = em28xx_start_feed;
 873         dvb->demux.stop_feed  = em28xx_stop_feed;
 874
 875         result = dvb_dmx_init(&dvb->demux);
 876         if (result < 0) {
 877                 printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
 878                        dev->name, result);
 879                 goto fail_dmx;
 880         }
 881
 882         dvb->dmxdev.filternum    = 256;
 883         dvb->dmxdev.demux        = &dvb->demux.dmx;
 884         dvb->dmxdev.capabilities = 0;
 885         result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 886         if (result < 0) {
 887                 printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
 888                        dev->name, result);
 889                 goto fail_dmxdev;
 890         }
 891
 892         dvb->fe_hw.source = DMX_FRONTEND_0;
 893         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 894         if (result < 0) {
 895                 printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
 896                        dev->name, result);
 897                 goto fail_fe_hw;
 898         }
 899
 900         dvb->fe_mem.source = DMX_MEMORY_FE;
 901         result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 902         if (result < 0) {
 903                 printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
 904                        dev->name, result);
 905                 goto fail_fe_mem;
 906         }
 907
 908         result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 909         if (result < 0) {
 910                 printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
 911                        dev->name, result);
 912                 goto fail_fe_conn;
 913         }
 914
 915         /* register network adapter */
 916         dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
 917         return 0;
 918
 919 fail_fe_conn:
 920         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 921 fail_fe_mem:
 922         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 923 fail_fe_hw:
 924         dvb_dmxdev_release(&dvb->dmxdev);
 925 fail_dmxdev:
 926         dvb_dmx_release(&dvb->demux);
 927 fail_dmx:
 928         if (dvb->fe[1])
 929                 dvb_unregister_frontend(dvb->fe[1]);
 930         dvb_unregister_frontend(dvb->fe[0]);
 931 fail_frontend1:
 932         if (dvb->fe[1])
 933                 dvb_frontend_detach(dvb->fe[1]);
 934 fail_frontend0:
 935         dvb_frontend_detach(dvb->fe[0]);
 936         dvb_unregister_adapter(&dvb->adapter);
 937 fail_adapter:
 938         return result;
 939 }
 940
 941 static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
 942 {
 943         dvb_net_release(&dvb->net);
 944         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 945         dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 946         dvb_dmxdev_release(&dvb->dmxdev);
 947         dvb_dmx_release(&dvb->demux);
 948         if (dvb->fe[1])
 949                 dvb_unregister_frontend(dvb->fe[1]);
 950         dvb_unregister_frontend(dvb->fe[0]);
 951         if (dvb->fe[1] && !dvb->dont_attach_fe1)
 952                 dvb_frontend_detach(dvb->fe[1]);
 953         dvb_frontend_detach(dvb->fe[0]);
 954         dvb_unregister_adapter(&dvb->adapter);
 955 }
 956
 957 static int em28xx_dvb_init(struct em28xx *dev)
 958 {
 959         int result = 0, mfe_shared = 0;
 960         struct em28xx_dvb *dvb;
 961
 962         if (!dev->board.has_dvb) {
 963                 /* This device does not support the extension */
 964                 printk(KERN_INFO "em28xx_dvb: This device does not support the extension\n");
 965                 return 0;
 966         }
 967
 968         dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
 969
 970         if (dvb == NULL) {
 971                 em28xx_info("em28xx_dvb: memory allocation failed\n");
 972                 return -ENOMEM;
 973         }
 974         dev->dvb = dvb;
 975         dvb->fe[0] = dvb->fe[1] = NULL;
 976
 977         mutex_lock(&dev->lock);
 978         em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
 979         /* init frontend */
 980         switch (dev->model) {
 981         case EM2874_BOARD_LEADERSHIP_ISDBT:
 982                 dvb->fe[0] = dvb_attach(s921_attach,
 983                                 &sharp_isdbt, &dev->i2c_adap[dev->def_i2c_bus]);
 984
 985                 if (!dvb->fe[0]) {
 986                         result = -EINVAL;
 987                         goto out_free;
 988                 }
 989
 990                 break;
 991         case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850:
 992         case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
 993         case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
 994         case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
 995                 dvb->fe[0] = dvb_attach(lgdt330x_attach,
 996                                            &em2880_lgdt3303_dev,
 997                                            &dev->i2c_adap[dev->def_i2c_bus]);
 998                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
 999                         result = -EINVAL;
1000                         goto out_free;
1001                 }
1002                 break;
1003         case EM2880_BOARD_KWORLD_DVB_310U:
1004                 dvb->fe[0] = dvb_attach(zl10353_attach,
1005                                            &em28xx_zl10353_with_xc3028,
1006                                            &dev->i2c_adap[dev->def_i2c_bus]);
1007                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
1008                         result = -EINVAL;
1009                         goto out_free;
1010                 }
1011                 break;
1012         case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
1013         case EM2882_BOARD_TERRATEC_HYBRID_XS:
1014         case EM2880_BOARD_EMPIRE_DUAL_TV:
1015                 dvb->fe[0] = dvb_attach(zl10353_attach,
1016                                            &em28xx_zl10353_xc3028_no_i2c_gate,
1017                                            &dev->i2c_adap[dev->def_i2c_bus]);
1018                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
1019                         result = -EINVAL;
1020                         goto out_free;
1021                 }
1022                 break;
1023         case EM2880_BOARD_TERRATEC_HYBRID_XS:
1024         case EM2880_BOARD_TERRATEC_HYBRID_XS_FR:
1025         case EM2881_BOARD_PINNACLE_HYBRID_PRO:
1026         case EM2882_BOARD_DIKOM_DK300:
1027         case EM2882_BOARD_KWORLD_VS_DVBT:
1028                 dvb->fe[0] = dvb_attach(zl10353_attach,
1029                                            &em28xx_zl10353_xc3028_no_i2c_gate,
1030                                            &dev->i2c_adap[dev->def_i2c_bus]);
1031                 if (dvb->fe[0] == NULL) {
1032                         /* This board could have either a zl10353 or a mt352.
1033                            If the chip id isn't for zl10353, try mt352 */
1034                         dvb->fe[0] = dvb_attach(mt352_attach,
1035                                                    &terratec_xs_mt352_cfg,
1036                                                    &dev->i2c_adap[dev->def_i2c_bus]);
1037                 }
1038
1039                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
1040                         result = -EINVAL;
1041                         goto out_free;
1042                 }
1043                 break;
1044         case EM2870_BOARD_KWORLD_355U:
1045                 dvb->fe[0] = dvb_attach(zl10353_attach,
1046                                            &em28xx_zl10353_no_i2c_gate_dev,
1047                                            &dev->i2c_adap[dev->def_i2c_bus]);
1048                 if (dvb->fe[0] != NULL)
1049                         dvb_attach(qt1010_attach, dvb->fe[0],
1050                                    &dev->i2c_adap[dev->def_i2c_bus], &em28xx_qt1010_config);
1051                 break;
1052         case EM2883_BOARD_KWORLD_HYBRID_330U:
1053         case EM2882_BOARD_EVGA_INDTUBE:
1054                 dvb->fe[0] = dvb_attach(s5h1409_attach,
1055                                            &em28xx_s5h1409_with_xc3028,
1056                                            &dev->i2c_adap[dev->def_i2c_bus]);
1057                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
1058                         result = -EINVAL;
1059                         goto out_free;
1060                 }
1061                 break;
1062         case EM2882_BOARD_KWORLD_ATSC_315U:
1063                 dvb->fe[0] = dvb_attach(lgdt330x_attach,
1064                                            &em2880_lgdt3303_dev,
1065                                            &dev->i2c_adap[dev->def_i2c_bus]);
1066                 if (dvb->fe[0] != NULL) {
1067                         if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1068                                 &dev->i2c_adap[dev->def_i2c_bus], 0x61, TUNER_THOMSON_DTT761X)) {
1069                                 result = -EINVAL;
1070                                 goto out_free;
1071                         }
1072                 }
1073                 break;
1074         case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
1075         case EM2882_BOARD_PINNACLE_HYBRID_PRO_330E:
1076                 dvb->fe[0] = dvb_attach(drxd_attach, &em28xx_drxd, NULL,
1077                                            &dev->i2c_adap[dev->def_i2c_bus], &dev->udev->dev);
1078                 if (em28xx_attach_xc3028(0x61, dev) < 0) {
1079                         result = -EINVAL;
1080                         goto out_free;
1081                 }
1082                 break;
1083         case EM2870_BOARD_REDDO_DVB_C_USB_BOX:
1084                 /* Philips CU1216L NIM (Philips TDA10023 + Infineon TUA6034) */
1085                 dvb->fe[0] = dvb_attach(tda10023_attach,
1086                         &em28xx_tda10023_config,
1087                         &dev->i2c_adap[dev->def_i2c_bus], 0x48);
1088                 if (dvb->fe[0]) {
1089                         if (!dvb_attach(simple_tuner_attach, dvb->fe[0],
1090                                 &dev->i2c_adap[dev->def_i2c_bus], 0x60, TUNER_PHILIPS_CU1216L)) {
1091                                 result = -EINVAL;
1092                                 goto out_free;
1093                         }
1094                 }
1095                 break;
1096         case EM2870_BOARD_KWORLD_A340:
1097                 dvb->fe[0] = dvb_attach(lgdt3305_attach,
1098                                            &em2870_lgdt3304_dev,
1099                                            &dev->i2c_adap[dev->def_i2c_bus]);
1100                 if (dvb->fe[0] != NULL)
1101                         dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1102                                    &dev->i2c_adap[dev->def_i2c_bus], &kworld_a340_config);
1103                 break;
1104         case EM28174_BOARD_PCTV_290E:
1105                 /* set default GPIO0 for LNA, used if GPIOLIB is undefined */
1106                 dvb->lna_gpio = CXD2820R_GPIO_E | CXD2820R_GPIO_O |
1107                                 CXD2820R_GPIO_L;
1108                 dvb->fe[0] = dvb_attach(cxd2820r_attach,
1109                                         &em28xx_cxd2820r_config,
1110                                         &dev->i2c_adap[dev->def_i2c_bus],
1111                                         &dvb->lna_gpio);
1112                 if (dvb->fe[0]) {
1113                         /* FE 0 attach tuner */
1114                         if (!dvb_attach(tda18271_attach,
1115                                         dvb->fe[0],
1116                                         0x60,
1117                                         &dev->i2c_adap[dev->def_i2c_bus],
1118                                         &em28xx_cxd2820r_tda18271_config)) {
1119
1120                                 dvb_frontend_detach(dvb->fe[0]);
1121                                 result = -EINVAL;
1122                                 goto out_free;
1123                         }
1124
1125 #ifdef CONFIG_GPIOLIB
1126                         /* enable LNA for DVB-T, DVB-T2 and DVB-C */
1127                         result = gpio_request_one(dvb->lna_gpio,
1128                                         GPIOF_OUT_INIT_LOW, NULL);
1129                         if (result)
1130                                 em28xx_errdev("gpio request failed %d\n",
1131                                                 result);
1132                         else
1133                                 gpio_free(dvb->lna_gpio);
1134
1135                         result = 0; /* continue even set LNA fails */
1136 #endif
1137                         dvb->fe[0]->ops.set_lna = em28xx_pctv_290e_set_lna;
1138                 }
1139
1140                 break;
1141         case EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C:
1142         {
1143                 struct xc5000_config cfg;
1144                 hauppauge_hvr930c_init(dev);
1145
1146                 dvb->fe[0] = dvb_attach(drxk_attach,
1147                                         &hauppauge_930c_drxk, &dev->i2c_adap[dev->def_i2c_bus]);
1148                 if (!dvb->fe[0]) {
1149                         result = -EINVAL;
1150                         goto out_free;
1151                 }
1152                 /* FIXME: do we need a pll semaphore? */
1153                 dvb->fe[0]->sec_priv = dvb;
1154                 sema_init(&dvb->pll_mutex, 1);
1155                 dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1156                 dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1157
1158                 /* Attach xc5000 */
1159                 memset(&cfg, 0, sizeof(cfg));
1160                 cfg.i2c_address  = 0x61;
1161                 cfg.if_khz = 4000;
1162
1163                 if (dvb->fe[0]->ops.i2c_gate_ctrl)
1164                         dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1165                 if (!dvb_attach(xc5000_attach, dvb->fe[0], &dev->i2c_adap[dev->def_i2c_bus],
1166                                 &cfg)) {
1167                         result = -EINVAL;
1168                         goto out_free;
1169                 }
1170                 if (dvb->fe[0]->ops.i2c_gate_ctrl)
1171                         dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1172
1173                 break;
1174         }
1175         case EM2884_BOARD_TERRATEC_H5:
1176                 terratec_h5_init(dev);
1177
1178                 dvb->fe[0] = dvb_attach(drxk_attach, &terratec_h5_drxk, &dev->i2c_adap[dev->def_i2c_bus]);
1179                 if (!dvb->fe[0]) {
1180                         result = -EINVAL;
1181                         goto out_free;
1182                 }
1183                 /* FIXME: do we need a pll semaphore? */
1184                 dvb->fe[0]->sec_priv = dvb;
1185                 sema_init(&dvb->pll_mutex, 1);
1186                 dvb->gate_ctrl = dvb->fe[0]->ops.i2c_gate_ctrl;
1187                 dvb->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
1188
1189                 /* Attach tda18271 to DVB-C frontend */
1190                 if (dvb->fe[0]->ops.i2c_gate_ctrl)
1191                         dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 1);
1192                 if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0], &dev->i2c_adap[dev->def_i2c_bus], 0x60)) {
1193                         result = -EINVAL;
1194                         goto out_free;
1195                 }
1196                 if (dvb->fe[0]->ops.i2c_gate_ctrl)
1197                         dvb->fe[0]->ops.i2c_gate_ctrl(dvb->fe[0], 0);
1198
1199                 break;
1200         case EM2884_BOARD_C3TECH_DIGITAL_DUO:
1201                 dvb->fe[0] = dvb_attach(mb86a20s_attach,
1202                                            &c3tech_duo_mb86a20s_config,
1203                                            &dev->i2c_adap[dev->def_i2c_bus]);
1204                 if (dvb->fe[0] != NULL)
1205                         dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1206                                    &dev->i2c_adap[dev->def_i2c_bus],
1207                                    &c3tech_duo_tda18271_config);
1208                 break;
1209         case EM28174_BOARD_PCTV_460E:
1210                 /* attach demod */
1211                 dvb->fe[0] = dvb_attach(tda10071_attach,
1212                         &em28xx_tda10071_config, &dev->i2c_adap[dev->def_i2c_bus]);
1213
1214                 /* attach SEC */
1215                 if (dvb->fe[0])
1216                         dvb_attach(a8293_attach, dvb->fe[0], &dev->i2c_adap[dev->def_i2c_bus],
1217                                 &em28xx_a8293_config);
1218                 break;
1219         case EM2874_BOARD_DELOCK_61959:
1220         case EM2874_BOARD_MAXMEDIA_UB425_TC:
1221                 /* attach demodulator */
1222                 dvb->fe[0] = dvb_attach(drxk_attach, &maxmedia_ub425_tc_drxk,
1223                                 &dev->i2c_adap[dev->def_i2c_bus]);
1224
1225                 if (dvb->fe[0]) {
1226                         /* disable I2C-gate */
1227                         dvb->fe[0]->ops.i2c_gate_ctrl = NULL;
1228
1229                         /* attach tuner */
1230                         if (!dvb_attach(tda18271c2dd_attach, dvb->fe[0],
1231                                         &dev->i2c_adap[dev->def_i2c_bus], 0x60)) {
1232                                 dvb_frontend_detach(dvb->fe[0]);
1233                                 result = -EINVAL;
1234                                 goto out_free;
1235                         }
1236                 }
1237
1238                 /* TODO: we need drx-3913k firmware in order to support DVB-T */
1239                 em28xx_info("MaxMedia UB425-TC/Delock 61959: only DVB-C " \
1240                                 "supported by that driver version\n");
1241
1242                 break;
1243         case EM2884_BOARD_PCTV_510E:
1244         case EM2884_BOARD_PCTV_520E:
1245                 pctv_520e_init(dev);
1246
1247                 /* attach demodulator */
1248                 dvb->fe[0] = dvb_attach(drxk_attach, &pctv_520e_drxk,
1249                                 &dev->i2c_adap[dev->def_i2c_bus]);
1250
1251                 if (dvb->fe[0]) {
1252                         /* attach tuner */
1253                         if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1254                                         &dev->i2c_adap[dev->def_i2c_bus],
1255                                         &em28xx_cxd2820r_tda18271_config)) {
1256                                 dvb_frontend_detach(dvb->fe[0]);
1257                                 result = -EINVAL;
1258                                 goto out_free;
1259                         }
1260                 }
1261                 break;
1262         case EM2884_BOARD_CINERGY_HTC_STICK:
1263                 terratec_htc_stick_init(dev);
1264
1265                 /* attach demodulator */
1266                 dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1267                                         &dev->i2c_adap[dev->def_i2c_bus]);
1268                 if (!dvb->fe[0]) {
1269                         result = -EINVAL;
1270                         goto out_free;
1271                 }
1272
1273                 /* Attach the demodulator. */
1274                 if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1275                                 &dev->i2c_adap[dev->def_i2c_bus],
1276                                 &em28xx_cxd2820r_tda18271_config)) {
1277                         result = -EINVAL;
1278                         goto out_free;
1279                 }
1280                 break;
1281         case EM2884_BOARD_TERRATEC_HTC_USB_XS:
1282                 terratec_htc_usb_xs_init(dev);
1283
1284                 /* attach demodulator */
1285                 dvb->fe[0] = dvb_attach(drxk_attach, &terratec_htc_stick_drxk,
1286                                         &dev->i2c_adap[dev->def_i2c_bus]);
1287                 if (!dvb->fe[0]) {
1288                         result = -EINVAL;
1289                         goto out_free;
1290                 }
1291
1292                 /* Attach the demodulator. */
1293                 if (!dvb_attach(tda18271_attach, dvb->fe[0], 0x60,
1294                                 &dev->i2c_adap[dev->def_i2c_bus],
1295                                 &em28xx_cxd2820r_tda18271_config)) {
1296                         result = -EINVAL;
1297                         goto out_free;
1298                 }
1299                 break;
1300         default:
1301                 em28xx_errdev("/2: The frontend of your DVB/ATSC card"
1302                                 " isn't supported yet\n");
1303                 break;
1304         }
1305         if (NULL == dvb->fe[0]) {
1306                 em28xx_errdev("/2: frontend initialization failed\n");
1307                 result = -EINVAL;
1308                 goto out_free;
1309         }
1310         /* define general-purpose callback pointer */
1311         dvb->fe[0]->callback = em28xx_tuner_callback;
1312         if (dvb->fe[1])
1313                 dvb->fe[1]->callback = em28xx_tuner_callback;
1314
1315         /* register everything */
1316         result = em28xx_register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
1317
1318         if (result < 0)
1319                 goto out_free;
1320
1321         /* MFE lock */
1322         dvb->adapter.mfe_shared = mfe_shared;
1323
1324         em28xx_info("Successfully loaded em28xx-dvb\n");
1325 ret:
1326         em28xx_set_mode(dev, EM28XX_SUSPEND);
1327         mutex_unlock(&dev->lock);
1328         return result;
1329
1330 out_free:
1331         kfree(dvb);
1332         dev->dvb = NULL;
1333         goto ret;
1334 }
1335
1336 static inline void prevent_sleep(struct dvb_frontend_ops *ops)
1337 {
1338         ops->set_voltage = NULL;
1339         ops->sleep = NULL;
1340         ops->tuner_ops.sleep = NULL;
1341 }
1342
1343 static int em28xx_dvb_fini(struct em28xx *dev)
1344 {
1345         if (!dev->board.has_dvb) {
1346                 /* This device does not support the extension */
1347                 return 0;
1348         }
1349
1350         if (dev->dvb) {
1351                 struct em28xx_dvb *dvb = dev->dvb;
1352
1353                 if (dev->disconnected) {
1354                         /* We cannot tell the device to sleep
1355                          * once it has been unplugged. */
1356                         if (dvb->fe[0])
1357                                 prevent_sleep(&dvb->fe[0]->ops);
1358                         if (dvb->fe[1])
1359                                 prevent_sleep(&dvb->fe[1]->ops);
1360                 }
1361
1362                 em28xx_unregister_dvb(dvb);
1363                 kfree(dvb);
1364                 dev->dvb = NULL;
1365         }
1366
1367         return 0;
1368 }
1369
1370 static struct em28xx_ops dvb_ops = {
1371         .id   = EM28XX_DVB,
1372         .name = "Em28xx dvb Extension",
1373         .init = em28xx_dvb_init,
1374         .fini = em28xx_dvb_fini,
1375 };
1376
1377 static int __init em28xx_dvb_register(void)
1378 {
1379         return em28xx_register_extension(&dvb_ops);
1380 }
1381
1382 static void __exit em28xx_dvb_unregister(void)
1383 {
1384         em28xx_unregister_extension(&dvb_ops);
1385 }
1386
1387 module_init(em28xx_dvb_register);
1388 module_exit(em28xx_dvb_unregister);