drivers/media/dvb/frontends/stv0299.c

   1 /*
   2     Driver for ST STV0299 demodulator
   3
   4     Copyright (C) 2001-2002 Convergence Integrated Media GmbH
   5         <ralph@convergence.de>,
   6         <holger@convergence.de>,
   7         <js@convergence.de>
   8
   9
  10     Philips SU1278/SH
  11
  12     Copyright (C) 2002 by Peter Schildmann <peter.schildmann@web.de>
  13
  14
  15     LG TDQF-S001F
  16
  17     Copyright (C) 2002 Felix Domke <tmbinc@elitedvb.net>
  18                      & Andreas Oberritter <obi@linuxtv.org>
  19
  20
  21     Support for Samsung TBMU24112IMB used on Technisat SkyStar2 rev. 2.6B
  22
  23     Copyright (C) 2003 Vadim Catana <skystar@moldova.cc>:
  24
  25     Support for Philips SU1278 on Technotrend hardware
  26
  27     Copyright (C) 2004 Andrew de Quincey <adq_dvb@lidskialf.net>
  28
  29     This program is free software; you can redistribute it and/or modify
  30     it under the terms of the GNU General Public License as published by
  31     the Free Software Foundation; either version 2 of the License, or
  32     (at your option) any later version.
  33
  34     This program is distributed in the hope that it will be useful,
  35     but WITHOUT ANY WARRANTY; without even the implied warranty of
  36     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  37     GNU General Public License for more details.
  38
  39     You should have received a copy of the GNU General Public License
  40     along with this program; if not, write to the Free Software
  41     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  42
  43 */
  44
  45 #include <linux/init.h>
  46 #include <linux/kernel.h>
  47 #include <linux/module.h>
  48 #include <linux/string.h>
  49 #include <linux/slab.h>
  50 #include <linux/jiffies.h>
  51 #include <asm/div64.h>
  52
  53 #include "dvb_frontend.h"
  54 #include "stv0299.h"
  55
  56 struct stv0299_state {
  57         struct i2c_adapter* i2c;
  58         const struct stv0299_config* config;
  59         struct dvb_frontend frontend;
  60
  61         u8 initialised:1;
  62         u32 tuner_frequency;
  63         u32 symbol_rate;
  64         fe_code_rate_t fec_inner;
  65         int errmode;
  66 };
  67
  68 #define STATUS_BER 0
  69 #define STATUS_UCBLOCKS 1
  70
  71 static int debug;
  72 static int debug_legacy_dish_switch;
  73 #define dprintk(args...) \
  74         do { \
  75                 if (debug) printk(KERN_DEBUG "stv0299: " args); \
  76         } while (0)
  77
  78
  79 static int stv0299_writeregI (struct stv0299_state* state, u8 reg, u8 data)
  80 {
  81         int ret;
  82         u8 buf [] = { reg, data };
  83         struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
  84
  85         ret = i2c_transfer (state->i2c, &msg, 1);
  86
  87         if (ret != 1)
  88                 dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, "
  89                         "ret == %i)\n", __func__, reg, data, ret);
  90
  91         return (ret != 1) ? -EREMOTEIO : 0;
  92 }
  93
  94 static int stv0299_write(struct dvb_frontend* fe, u8 *buf, int len)
  95 {
  96         struct stv0299_state* state = fe->demodulator_priv;
  97
  98         if (len != 2)
  99                 return -EINVAL;
 100
 101         return stv0299_writeregI(state, buf[0], buf[1]);
 102 }
 103
 104 static u8 stv0299_readreg (struct stv0299_state* state, u8 reg)
 105 {
 106         int ret;
 107         u8 b0 [] = { reg };
 108         u8 b1 [] = { 0 };
 109         struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
 110                            { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
 111
 112         ret = i2c_transfer (state->i2c, msg, 2);
 113
 114         if (ret != 2)
 115                 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n",
 116                                 __func__, reg, ret);
 117
 118         return b1[0];
 119 }
 120
 121 static int stv0299_readregs (struct stv0299_state* state, u8 reg1, u8 *b, u8 len)
 122 {
 123         int ret;
 124         struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = &reg1, .len = 1 },
 125                            { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } };
 126
 127         ret = i2c_transfer (state->i2c, msg, 2);
 128
 129         if (ret != 2)
 130                 dprintk("%s: readreg error (ret == %i)\n", __func__, ret);
 131
 132         return ret == 2 ? 0 : ret;
 133 }
 134
 135 static int stv0299_set_FEC (struct stv0299_state* state, fe_code_rate_t fec)
 136 {
 137         dprintk ("%s\n", __func__);
 138
 139         switch (fec) {
 140         case FEC_AUTO:
 141         {
 142                 return stv0299_writeregI (state, 0x31, 0x1f);
 143         }
 144         case FEC_1_2:
 145         {
 146                 return stv0299_writeregI (state, 0x31, 0x01);
 147         }
 148         case FEC_2_3:
 149         {
 150                 return stv0299_writeregI (state, 0x31, 0x02);
 151         }
 152         case FEC_3_4:
 153         {
 154                 return stv0299_writeregI (state, 0x31, 0x04);
 155         }
 156         case FEC_5_6:
 157         {
 158                 return stv0299_writeregI (state, 0x31, 0x08);
 159         }
 160         case FEC_7_8:
 161         {
 162                 return stv0299_writeregI (state, 0x31, 0x10);
 163         }
 164         default:
 165         {
 166                 return -EINVAL;
 167         }
 168     }
 169 }
 170
 171 static fe_code_rate_t stv0299_get_fec (struct stv0299_state* state)
 172 {
 173         static fe_code_rate_t fec_tab [] = { FEC_2_3, FEC_3_4, FEC_5_6,
 174                                              FEC_7_8, FEC_1_2 };
 175         u8 index;
 176
 177         dprintk ("%s\n", __func__);
 178
 179         index = stv0299_readreg (state, 0x1b);
 180         index &= 0x7;
 181
 182         if (index > 4)
 183                 return FEC_AUTO;
 184
 185         return fec_tab [index];
 186 }
 187
 188 static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout)
 189 {
 190         unsigned long start = jiffies;
 191
 192         dprintk ("%s\n", __func__);
 193
 194         while (stv0299_readreg(state, 0x0a) & 1) {
 195                 if (jiffies - start > timeout) {
 196                         dprintk ("%s: timeout!!\n", __func__);
 197                         return -ETIMEDOUT;
 198                 }
 199                 msleep(10);
 200         };
 201
 202         return 0;
 203 }
 204
 205 static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout)
 206 {
 207         unsigned long start = jiffies;
 208
 209         dprintk ("%s\n", __func__);
 210
 211         while ((stv0299_readreg(state, 0x0a) & 3) != 2 ) {
 212                 if (jiffies - start > timeout) {
 213                         dprintk ("%s: timeout!!\n", __func__);
 214                         return -ETIMEDOUT;
 215                 }
 216                 msleep(10);
 217         };
 218
 219         return 0;
 220 }
 221
 222 static int stv0299_set_symbolrate (struct dvb_frontend* fe, u32 srate)
 223 {
 224         struct stv0299_state* state = fe->demodulator_priv;
 225         u64 big = srate;
 226         u32 ratio;
 227
 228         // check rate is within limits
 229         if ((srate < 1000000) || (srate > 45000000)) return -EINVAL;
 230
 231         // calculate value to program
 232         big = big << 20;
 233         big += (state->config->mclk-1); // round correctly
 234         do_div(big, state->config->mclk);
 235         ratio = big << 4;
 236
 237         return state->config->set_symbol_rate(fe, srate, ratio);
 238 }
 239
 240 static int stv0299_get_symbolrate (struct stv0299_state* state)
 241 {
 242         u32 Mclk = state->config->mclk / 4096L;
 243         u32 srate;
 244         s32 offset;
 245         u8 sfr[3];
 246         s8 rtf;
 247
 248         dprintk ("%s\n", __func__);
 249
 250         stv0299_readregs (state, 0x1f, sfr, 3);
 251         stv0299_readregs (state, 0x1a, (u8 *)&rtf, 1);
 252
 253         srate = (sfr[0] << 8) | sfr[1];
 254         srate *= Mclk;
 255         srate /= 16;
 256         srate += (sfr[2] >> 4) * Mclk / 256;
 257         offset = (s32) rtf * (srate / 4096L);
 258         offset /= 128;
 259
 260         dprintk ("%s : srate = %i\n", __func__, srate);
 261         dprintk ("%s : ofset = %i\n", __func__, offset);
 262
 263         srate += offset;
 264
 265         srate += 1000;
 266         srate /= 2000;
 267         srate *= 2000;
 268
 269         return srate;
 270 }
 271
 272 static int stv0299_send_diseqc_msg (struct dvb_frontend* fe,
 273                                     struct dvb_diseqc_master_cmd *m)
 274 {
 275         struct stv0299_state* state = fe->demodulator_priv;
 276         u8 val;
 277         int i;
 278
 279         dprintk ("%s\n", __func__);
 280
 281         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 282                 return -ETIMEDOUT;
 283
 284         val = stv0299_readreg (state, 0x08);
 285
 286         if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x6))  /* DiSEqC mode */
 287                 return -EREMOTEIO;
 288
 289         for (i=0; i<m->msg_len; i++) {
 290                 if (stv0299_wait_diseqc_fifo (state, 100) < 0)
 291                         return -ETIMEDOUT;
 292
 293                 if (stv0299_writeregI (state, 0x09, m->msg[i]))
 294                         return -EREMOTEIO;
 295         }
 296
 297         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 298                 return -ETIMEDOUT;
 299
 300         return 0;
 301 }
 302
 303 static int stv0299_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
 304 {
 305         struct stv0299_state* state = fe->demodulator_priv;
 306         u8 val;
 307
 308         dprintk ("%s\n", __func__);
 309
 310         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 311                 return -ETIMEDOUT;
 312
 313         val = stv0299_readreg (state, 0x08);
 314
 315         if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x2))        /* burst mode */
 316                 return -EREMOTEIO;
 317
 318         if (stv0299_writeregI (state, 0x09, burst == SEC_MINI_A ? 0x00 : 0xff))
 319                 return -EREMOTEIO;
 320
 321         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 322                 return -ETIMEDOUT;
 323
 324         if (stv0299_writeregI (state, 0x08, val))
 325                 return -EREMOTEIO;
 326
 327         return 0;
 328 }
 329
 330 static int stv0299_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
 331 {
 332         struct stv0299_state* state = fe->demodulator_priv;
 333         u8 val;
 334
 335         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 336                 return -ETIMEDOUT;
 337
 338         val = stv0299_readreg (state, 0x08);
 339
 340         switch (tone) {
 341         case SEC_TONE_ON:
 342                 return stv0299_writeregI (state, 0x08, val | 0x3);
 343
 344         case SEC_TONE_OFF:
 345                 return stv0299_writeregI (state, 0x08, (val & ~0x3) | 0x02);
 346
 347         default:
 348                 return -EINVAL;
 349         }
 350 }
 351
 352 static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
 353 {
 354         struct stv0299_state* state = fe->demodulator_priv;
 355         u8 reg0x08;
 356         u8 reg0x0c;
 357
 358         dprintk("%s: %s\n", __func__,
 359                 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
 360                 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
 361
 362         reg0x08 = stv0299_readreg (state, 0x08);
 363         reg0x0c = stv0299_readreg (state, 0x0c);
 364
 365         /**
 366          *  H/V switching over OP0, OP1 and OP2 are LNB power enable bits
 367          */
 368         reg0x0c &= 0x0f;
 369         reg0x08 = (reg0x08 & 0x3f) | (state->config->lock_output << 6);
 370
 371         switch (voltage) {
 372         case SEC_VOLTAGE_13:
 373                 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0)
 374                         reg0x0c |= 0x10; /* OP1 off, OP0 on */
 375                 else
 376                         reg0x0c |= 0x40; /* OP1 on, OP0 off */
 377                 break;
 378         case SEC_VOLTAGE_18:
 379                 reg0x0c |= 0x50; /* OP1 on, OP0 on */
 380                 break;
 381         case SEC_VOLTAGE_OFF:
 382                 /* LNB power off! */
 383                 reg0x08 = 0x00;
 384                 reg0x0c = 0x00;
 385                 break;
 386         default:
 387                 return -EINVAL;
 388         };
 389
 390         if (state->config->op0_off)
 391                 reg0x0c &= ~0x10;
 392
 393         stv0299_writeregI(state, 0x08, reg0x08);
 394         return stv0299_writeregI(state, 0x0c, reg0x0c);
 395 }
 396
 397 static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long cmd)
 398 {
 399         struct stv0299_state* state = fe->demodulator_priv;
 400         u8 reg0x08;
 401         u8 reg0x0c;
 402         u8 lv_mask = 0x40;
 403         u8 last = 1;
 404         int i;
 405         struct timeval nexttime;
 406         struct timeval tv[10];
 407
 408         reg0x08 = stv0299_readreg (state, 0x08);
 409         reg0x0c = stv0299_readreg (state, 0x0c);
 410         reg0x0c &= 0x0f;
 411         stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
 412         if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0)
 413                 lv_mask = 0x10;
 414
 415         cmd = cmd << 1;
 416         if (debug_legacy_dish_switch)
 417                 printk ("%s switch command: 0x%04lx\n",__func__, cmd);
 418
 419         do_gettimeofday (&nexttime);
 420         if (debug_legacy_dish_switch)
 421                 memcpy (&tv[0], &nexttime, sizeof (struct timeval));
 422         stv0299_writeregI (state, 0x0c, reg0x0c | 0x50); /* set LNB to 18V */
 423
 424         dvb_frontend_sleep_until(&nexttime, 32000);
 425
 426         for (i=0; i<9; i++) {
 427                 if (debug_legacy_dish_switch)
 428                         do_gettimeofday (&tv[i+1]);
 429                 if((cmd & 0x01) != last) {
 430                         /* set voltage to (last ? 13V : 18V) */
 431                         stv0299_writeregI (state, 0x0c, reg0x0c | (last ? lv_mask : 0x50));
 432                         last = (last) ? 0 : 1;
 433                 }
 434
 435                 cmd = cmd >> 1;
 436
 437                 if (i != 8)
 438                         dvb_frontend_sleep_until(&nexttime, 8000);
 439         }
 440         if (debug_legacy_dish_switch) {
 441                 printk ("%s(%d): switch delay (should be 32k followed by all 8k\n",
 442                         __func__, fe->dvb->num);
 443                 for (i = 1; i < 10; i++)
 444                         printk ("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
 445         }
 446
 447         return 0;
 448 }
 449
 450 static int stv0299_init (struct dvb_frontend* fe)
 451 {
 452         struct stv0299_state* state = fe->demodulator_priv;
 453         int i;
 454         u8 reg;
 455         u8 val;
 456
 457         dprintk("stv0299: init chip\n");
 458
 459         for (i = 0; ; i += 2)  {
 460                 reg = state->config->inittab[i];
 461                 val = state->config->inittab[i+1];
 462                 if (reg == 0xff && val == 0xff)
 463                         break;
 464                 if (reg == 0x0c && state->config->op0_off)
 465                         val &= ~0x10;
 466                 stv0299_writeregI(state, reg, val);
 467         }
 468
 469         return 0;
 470 }
 471
 472 static int stv0299_read_status(struct dvb_frontend* fe, fe_status_t* status)
 473 {
 474         struct stv0299_state* state = fe->demodulator_priv;
 475
 476         u8 signal = 0xff - stv0299_readreg (state, 0x18);
 477         u8 sync = stv0299_readreg (state, 0x1b);
 478
 479         dprintk ("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync);
 480         *status = 0;
 481
 482         if (signal > 10)
 483                 *status |= FE_HAS_SIGNAL;
 484
 485         if (sync & 0x80)
 486                 *status |= FE_HAS_CARRIER;
 487
 488         if (sync & 0x10)
 489                 *status |= FE_HAS_VITERBI;
 490
 491         if (sync & 0x08)
 492                 *status |= FE_HAS_SYNC;
 493
 494         if ((sync & 0x98) == 0x98)
 495                 *status |= FE_HAS_LOCK;
 496
 497         return 0;
 498 }
 499
 500 static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber)
 501 {
 502         struct stv0299_state* state = fe->demodulator_priv;
 503
 504         if (state->errmode != STATUS_BER) return 0;
 505         *ber = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
 506
 507         return 0;
 508 }
 509
 510 static int stv0299_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 511 {
 512         struct stv0299_state* state = fe->demodulator_priv;
 513
 514         s32 signal =  0xffff - ((stv0299_readreg (state, 0x18) << 8)
 515                                | stv0299_readreg (state, 0x19));
 516
 517         dprintk ("%s : FE_READ_SIGNAL_STRENGTH : AGC2I: 0x%02x%02x, signal=0x%04x\n", __func__,
 518                  stv0299_readreg (state, 0x18),
 519                  stv0299_readreg (state, 0x19), (int) signal);
 520
 521         signal = signal * 5 / 4;
 522         *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal;
 523
 524         return 0;
 525 }
 526
 527 static int stv0299_read_snr(struct dvb_frontend* fe, u16* snr)
 528 {
 529         struct stv0299_state* state = fe->demodulator_priv;
 530
 531         s32 xsnr = 0xffff - ((stv0299_readreg (state, 0x24) << 8)
 532                            | stv0299_readreg (state, 0x25));
 533         xsnr = 3 * (xsnr - 0xa100);
 534         *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr;
 535
 536         return 0;
 537 }
 538
 539 static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 540 {
 541         struct stv0299_state* state = fe->demodulator_priv;
 542
 543         if (state->errmode != STATUS_UCBLOCKS) *ucblocks = 0;
 544         else *ucblocks = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
 545
 546         return 0;
 547 }
 548
 549 static int stv0299_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
 550 {
 551         struct stv0299_state* state = fe->demodulator_priv;
 552         int invval = 0;
 553
 554         dprintk ("%s : FE_SET_FRONTEND\n", __func__);
 555
 556         // set the inversion
 557         if (p->inversion == INVERSION_OFF) invval = 0;
 558         else if (p->inversion == INVERSION_ON) invval = 1;
 559         else {
 560                 printk("stv0299 does not support auto-inversion\n");
 561                 return -EINVAL;
 562         }
 563         if (state->config->invert) invval = (~invval) & 1;
 564         stv0299_writeregI(state, 0x0c, (stv0299_readreg(state, 0x0c) & 0xfe) | invval);
 565
 566         if (fe->ops.tuner_ops.set_params) {
 567                 fe->ops.tuner_ops.set_params(fe, p);
 568                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 569         }
 570
 571         stv0299_set_FEC (state, p->u.qpsk.fec_inner);
 572         stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate);
 573         stv0299_writeregI(state, 0x22, 0x00);
 574         stv0299_writeregI(state, 0x23, 0x00);
 575
 576         state->tuner_frequency = p->frequency;
 577         state->fec_inner = p->u.qpsk.fec_inner;
 578         state->symbol_rate = p->u.qpsk.symbol_rate;
 579
 580         return 0;
 581 }
 582
 583 static int stv0299_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
 584 {
 585         struct stv0299_state* state = fe->demodulator_priv;
 586         s32 derot_freq;
 587         int invval;
 588
 589         derot_freq = (s32)(s16) ((stv0299_readreg (state, 0x22) << 8)
 590                                 | stv0299_readreg (state, 0x23));
 591
 592         derot_freq *= (state->config->mclk >> 16);
 593         derot_freq += 500;
 594         derot_freq /= 1000;
 595
 596         p->frequency += derot_freq;
 597
 598         invval = stv0299_readreg (state, 0x0c) & 1;
 599         if (state->config->invert) invval = (~invval) & 1;
 600         p->inversion = invval ? INVERSION_ON : INVERSION_OFF;
 601
 602         p->u.qpsk.fec_inner = stv0299_get_fec (state);
 603         p->u.qpsk.symbol_rate = stv0299_get_symbolrate (state);
 604
 605         return 0;
 606 }
 607
 608 static int stv0299_sleep(struct dvb_frontend* fe)
 609 {
 610         struct stv0299_state* state = fe->demodulator_priv;
 611
 612         stv0299_writeregI(state, 0x02, 0x80);
 613         state->initialised = 0;
 614
 615         return 0;
 616 }
 617
 618 static int stv0299_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
 619 {
 620         struct stv0299_state* state = fe->demodulator_priv;
 621
 622         if (enable) {
 623                 stv0299_writeregI(state, 0x05, 0xb5);
 624         } else {
 625                 stv0299_writeregI(state, 0x05, 0x35);
 626         }
 627         udelay(1);
 628         return 0;
 629 }
 630
 631 static int stv0299_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
 632 {
 633         struct stv0299_state* state = fe->demodulator_priv;
 634
 635         fesettings->min_delay_ms = state->config->min_delay_ms;
 636         if (fesettings->parameters.u.qpsk.symbol_rate < 10000000) {
 637                 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 32000;
 638                 fesettings->max_drift = 5000;
 639         } else {
 640                 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 16000;
 641                 fesettings->max_drift = fesettings->parameters.u.qpsk.symbol_rate / 2000;
 642         }
 643         return 0;
 644 }
 645
 646 static void stv0299_release(struct dvb_frontend* fe)
 647 {
 648         struct stv0299_state* state = fe->demodulator_priv;
 649         kfree(state);
 650 }
 651
 652 static struct dvb_frontend_ops stv0299_ops;
 653
 654 struct dvb_frontend* stv0299_attach(const struct stv0299_config* config,
 655                                     struct i2c_adapter* i2c)
 656 {
 657         struct stv0299_state* state = NULL;
 658         int id;
 659
 660         /* allocate memory for the internal state */
 661         state = kmalloc(sizeof(struct stv0299_state), GFP_KERNEL);
 662         if (state == NULL) goto error;
 663
 664         /* setup the state */
 665         state->config = config;
 666         state->i2c = i2c;
 667         state->initialised = 0;
 668         state->tuner_frequency = 0;
 669         state->symbol_rate = 0;
 670         state->fec_inner = 0;
 671         state->errmode = STATUS_BER;
 672
 673         /* check if the demod is there */
 674         stv0299_writeregI(state, 0x02, 0x34); /* standby off */
 675         msleep(200);
 676         id = stv0299_readreg(state, 0x00);
 677
 678         /* register 0x00 contains 0xa1 for STV0299 and STV0299B */
 679         /* register 0x00 might contain 0x80 when returning from standby */
 680         if (id != 0xa1 && id != 0x80) goto error;
 681
 682         /* create dvb_frontend */
 683         memcpy(&state->frontend.ops, &stv0299_ops, sizeof(struct dvb_frontend_ops));
 684         state->frontend.demodulator_priv = state;
 685         return &state->frontend;
 686
 687 error:
 688         kfree(state);
 689         return NULL;
 690 }
 691
 692 static struct dvb_frontend_ops stv0299_ops = {
 693
 694         .info = {
 695                 .name                   = "ST STV0299 DVB-S",
 696                 .type                   = FE_QPSK,
 697                 .frequency_min          = 950000,
 698                 .frequency_max          = 2150000,
 699                 .frequency_stepsize     = 125,   /* kHz for QPSK frontends */
 700                 .frequency_tolerance    = 0,
 701                 .symbol_rate_min        = 1000000,
 702                 .symbol_rate_max        = 45000000,
 703                 .symbol_rate_tolerance  = 500,  /* ppm */
 704                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 705                       FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
 706                       FE_CAN_QPSK |
 707                       FE_CAN_FEC_AUTO
 708         },
 709
 710         .release = stv0299_release,
 711
 712         .init = stv0299_init,
 713         .sleep = stv0299_sleep,
 714         .write = stv0299_write,
 715         .i2c_gate_ctrl = stv0299_i2c_gate_ctrl,
 716
 717         .set_frontend = stv0299_set_frontend,
 718         .get_frontend = stv0299_get_frontend,
 719         .get_tune_settings = stv0299_get_tune_settings,
 720
 721         .read_status = stv0299_read_status,
 722         .read_ber = stv0299_read_ber,
 723         .read_signal_strength = stv0299_read_signal_strength,
 724         .read_snr = stv0299_read_snr,
 725         .read_ucblocks = stv0299_read_ucblocks,
 726
 727         .diseqc_send_master_cmd = stv0299_send_diseqc_msg,
 728         .diseqc_send_burst = stv0299_send_diseqc_burst,
 729         .set_tone = stv0299_set_tone,
 730         .set_voltage = stv0299_set_voltage,
 731         .dishnetwork_send_legacy_command = stv0299_send_legacy_dish_cmd,
 732 };
 733
 734 module_param(debug_legacy_dish_switch, int, 0444);
 735 MODULE_PARM_DESC(debug_legacy_dish_switch, "Enable timing analysis for Dish Network legacy switches");
 736
 737 module_param(debug, int, 0644);
 738 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
 739
 740 MODULE_DESCRIPTION("ST STV0299 DVB Demodulator driver");
 741 MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, "
 742               "Andreas Oberritter, Andrew de Quincey, Kenneth Aafly");
 743 MODULE_LICENSE("GPL");
 744
 745 EXPORT_SYMBOL(stv0299_attach);