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/moduleparam.h>
  49 #include <linux/string.h>
  50 #include <linux/slab.h>
  51 #include <linux/jiffies.h>
  52 #include <asm/div64.h>
  53
  54 #include "dvb_frontend.h"
  55 #include "stv0299.h"
  56
  57 struct stv0299_state {
  58         struct i2c_adapter* i2c;
  59         struct dvb_frontend_ops ops;
  60         const struct stv0299_config* config;
  61         struct dvb_frontend frontend;
  62
  63         u8 initialised:1;
  64         u32 tuner_frequency;
  65         u32 symbol_rate;
  66         fe_code_rate_t fec_inner;
  67         int errmode;
  68 };
  69
  70 #define STATUS_BER 0
  71 #define STATUS_UCBLOCKS 1
  72
  73 static int debug;
  74 static int debug_legacy_dish_switch;
  75 #define dprintk(args...) \
  76         do { \
  77                 if (debug) printk(KERN_DEBUG "stv0299: " args); \
  78         } while (0)
  79
  80
  81 static int stv0299_writeregI (struct stv0299_state* state, u8 reg, u8 data)
  82 {
  83         int ret;
  84         u8 buf [] = { reg, data };
  85         struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
  86
  87         ret = i2c_transfer (state->i2c, &msg, 1);
  88
  89         if (ret != 1)
  90                 dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, "
  91                         "ret == %i)\n", __FUNCTION__, reg, data, ret);
  92
  93         return (ret != 1) ? -EREMOTEIO : 0;
  94 }
  95
  96 int stv0299_writereg (struct dvb_frontend* fe, u8 reg, u8 data)
  97 {
  98         struct stv0299_state* state = fe->demodulator_priv;
  99
 100         return stv0299_writeregI(state, reg, data);
 101 }
 102
 103 static u8 stv0299_readreg (struct stv0299_state* state, u8 reg)
 104 {
 105         int ret;
 106         u8 b0 [] = { reg };
 107         u8 b1 [] = { 0 };
 108         struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
 109                            { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
 110
 111         ret = i2c_transfer (state->i2c, msg, 2);
 112
 113         if (ret != 2)
 114                 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n",
 115                                 __FUNCTION__, reg, ret);
 116
 117         return b1[0];
 118 }
 119
 120 static int stv0299_readregs (struct stv0299_state* state, u8 reg1, u8 *b, u8 len)
 121 {
 122         int ret;
 123         struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = &reg1, .len = 1 },
 124                            { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } };
 125
 126         ret = i2c_transfer (state->i2c, msg, 2);
 127
 128         if (ret != 2)
 129                 dprintk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
 130
 131         return ret == 2 ? 0 : ret;
 132 }
 133
 134 int stv0299_enable_plli2c (struct dvb_frontend* fe)
 135 {
 136         struct stv0299_state* state = fe->demodulator_priv;
 137
 138         return stv0299_writeregI(state, 0x05, 0xb5);    /*  enable i2c repeater on stv0299  */
 139 }
 140
 141 static int stv0299_set_FEC (struct stv0299_state* state, fe_code_rate_t fec)
 142 {
 143         dprintk ("%s\n", __FUNCTION__);
 144
 145         switch (fec) {
 146         case FEC_AUTO:
 147         {
 148                 return stv0299_writeregI (state, 0x31, 0x1f);
 149         }
 150         case FEC_1_2:
 151         {
 152                 return stv0299_writeregI (state, 0x31, 0x01);
 153         }
 154         case FEC_2_3:
 155         {
 156                 return stv0299_writeregI (state, 0x31, 0x02);
 157         }
 158         case FEC_3_4:
 159         {
 160                 return stv0299_writeregI (state, 0x31, 0x04);
 161         }
 162         case FEC_5_6:
 163         {
 164                 return stv0299_writeregI (state, 0x31, 0x08);
 165         }
 166         case FEC_7_8:
 167         {
 168                 return stv0299_writeregI (state, 0x31, 0x10);
 169         }
 170         default:
 171         {
 172                 return -EINVAL;
 173         }
 174     }
 175 }
 176
 177 static fe_code_rate_t stv0299_get_fec (struct stv0299_state* state)
 178 {
 179         static fe_code_rate_t fec_tab [] = { FEC_2_3, FEC_3_4, FEC_5_6,
 180                                              FEC_7_8, FEC_1_2 };
 181         u8 index;
 182
 183         dprintk ("%s\n", __FUNCTION__);
 184
 185         index = stv0299_readreg (state, 0x1b);
 186         index &= 0x7;
 187
 188         if (index > 4)
 189                 return FEC_AUTO;
 190
 191         return fec_tab [index];
 192 }
 193
 194 static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout)
 195 {
 196         unsigned long start = jiffies;
 197
 198         dprintk ("%s\n", __FUNCTION__);
 199
 200         while (stv0299_readreg(state, 0x0a) & 1) {
 201                 if (jiffies - start > timeout) {
 202                         dprintk ("%s: timeout!!\n", __FUNCTION__);
 203                         return -ETIMEDOUT;
 204                 }
 205                 msleep(10);
 206         };
 207
 208         return 0;
 209 }
 210
 211 static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout)
 212 {
 213         unsigned long start = jiffies;
 214
 215         dprintk ("%s\n", __FUNCTION__);
 216
 217         while ((stv0299_readreg(state, 0x0a) & 3) != 2 ) {
 218                 if (jiffies - start > timeout) {
 219                         dprintk ("%s: timeout!!\n", __FUNCTION__);
 220                         return -ETIMEDOUT;
 221                 }
 222                 msleep(10);
 223         };
 224
 225         return 0;
 226 }
 227
 228 static int stv0299_set_symbolrate (struct dvb_frontend* fe, u32 srate)
 229 {
 230         struct stv0299_state* state = fe->demodulator_priv;
 231         u64 big = srate;
 232         u32 ratio;
 233
 234         // check rate is within limits
 235         if ((srate < 1000000) || (srate > 45000000)) return -EINVAL;
 236
 237         // calculate value to program
 238         big = big << 20;
 239         big += (state->config->mclk-1); // round correctly
 240         do_div(big, state->config->mclk);
 241         ratio = big << 4;
 242
 243         return state->config->set_symbol_rate(fe, srate, ratio);
 244 }
 245
 246 static int stv0299_get_symbolrate (struct stv0299_state* state)
 247 {
 248         u32 Mclk = state->config->mclk / 4096L;
 249         u32 srate;
 250         s32 offset;
 251         u8 sfr[3];
 252         s8 rtf;
 253
 254         dprintk ("%s\n", __FUNCTION__);
 255
 256         stv0299_readregs (state, 0x1f, sfr, 3);
 257         stv0299_readregs (state, 0x1a, &rtf, 1);
 258
 259         srate = (sfr[0] << 8) | sfr[1];
 260         srate *= Mclk;
 261         srate /= 16;
 262         srate += (sfr[2] >> 4) * Mclk / 256;
 263         offset = (s32) rtf * (srate / 4096L);
 264         offset /= 128;
 265
 266         dprintk ("%s : srate = %i\n", __FUNCTION__, srate);
 267         dprintk ("%s : ofset = %i\n", __FUNCTION__, offset);
 268
 269         srate += offset;
 270
 271         srate += 1000;
 272         srate /= 2000;
 273         srate *= 2000;
 274
 275         return srate;
 276 }
 277
 278 static int stv0299_send_diseqc_msg (struct dvb_frontend* fe,
 279                                     struct dvb_diseqc_master_cmd *m)
 280 {
 281         struct stv0299_state* state = fe->demodulator_priv;
 282         u8 val;
 283         int i;
 284
 285         dprintk ("%s\n", __FUNCTION__);
 286
 287         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 288                 return -ETIMEDOUT;
 289
 290         val = stv0299_readreg (state, 0x08);
 291
 292         if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x6))  /* DiSEqC mode */
 293                 return -EREMOTEIO;
 294
 295         for (i=0; i<m->msg_len; i++) {
 296                 if (stv0299_wait_diseqc_fifo (state, 100) < 0)
 297                         return -ETIMEDOUT;
 298
 299                 if (stv0299_writeregI (state, 0x09, m->msg[i]))
 300                         return -EREMOTEIO;
 301         }
 302
 303         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 304                 return -ETIMEDOUT;
 305
 306         return 0;
 307 }
 308
 309 static int stv0299_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
 310 {
 311         struct stv0299_state* state = fe->demodulator_priv;
 312         u8 val;
 313
 314         dprintk ("%s\n", __FUNCTION__);
 315
 316         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 317                 return -ETIMEDOUT;
 318
 319         val = stv0299_readreg (state, 0x08);
 320
 321         if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x2))        /* burst mode */
 322                 return -EREMOTEIO;
 323
 324         if (stv0299_writeregI (state, 0x09, burst == SEC_MINI_A ? 0x00 : 0xff))
 325                 return -EREMOTEIO;
 326
 327         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 328                 return -ETIMEDOUT;
 329
 330         if (stv0299_writeregI (state, 0x08, val))
 331                 return -EREMOTEIO;
 332
 333         return 0;
 334 }
 335
 336 static int stv0299_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
 337 {
 338         struct stv0299_state* state = fe->demodulator_priv;
 339         u8 val;
 340
 341         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 342                 return -ETIMEDOUT;
 343
 344         val = stv0299_readreg (state, 0x08);
 345
 346         switch (tone) {
 347         case SEC_TONE_ON:
 348                 return stv0299_writeregI (state, 0x08, val | 0x3);
 349
 350         case SEC_TONE_OFF:
 351                 return stv0299_writeregI (state, 0x08, (val & ~0x3) | 0x02);
 352
 353         default:
 354                 return -EINVAL;
 355         }
 356 }
 357
 358 static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
 359 {
 360         struct stv0299_state* state = fe->demodulator_priv;
 361         u8 reg0x08;
 362         u8 reg0x0c;
 363
 364         dprintk("%s: %s\n", __FUNCTION__,
 365                 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
 366                 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
 367
 368         reg0x08 = stv0299_readreg (state, 0x08);
 369         reg0x0c = stv0299_readreg (state, 0x0c);
 370
 371         /**
 372          *  H/V switching over OP0, OP1 and OP2 are LNB power enable bits
 373          */
 374         reg0x0c &= 0x0f;
 375
 376         if (voltage == SEC_VOLTAGE_OFF) {
 377                 stv0299_writeregI (state, 0x0c, 0x00); /*       LNB power off! */
 378                 return stv0299_writeregI (state, 0x08, 0x00); /*        LNB power off! */
 379         }
 380
 381         stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
 382
 383         switch (voltage) {
 384         case SEC_VOLTAGE_13:
 385                 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) reg0x0c |= 0x10;
 386                 else reg0x0c |= 0x40;
 387
 388                 return stv0299_writeregI(state, 0x0c, reg0x0c);
 389
 390         case SEC_VOLTAGE_18:
 391                 return stv0299_writeregI(state, 0x0c, reg0x0c | 0x50);
 392         default:
 393                 return -EINVAL;
 394         };
 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",__FUNCTION__, 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                         __FUNCTION__, 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
 455         dprintk("stv0299: init chip\n");
 456
 457         for (i=0; !(state->config->inittab[i] == 0xff && state->config->inittab[i+1] == 0xff); i+=2)
 458                 stv0299_writeregI(state, state->config->inittab[i], state->config->inittab[i+1]);
 459
 460         if (state->config->pll_init) {
 461                 stv0299_writeregI(state, 0x05, 0xb5);   /*  enable i2c repeater on stv0299  */
 462                 state->config->pll_init(fe, state->i2c);
 463                 stv0299_writeregI(state, 0x05, 0x35);   /*  disable i2c repeater on stv0299  */
 464         }
 465
 466         return 0;
 467 }
 468
 469 static int stv0299_read_status(struct dvb_frontend* fe, fe_status_t* status)
 470 {
 471         struct stv0299_state* state = fe->demodulator_priv;
 472
 473         u8 signal = 0xff - stv0299_readreg (state, 0x18);
 474         u8 sync = stv0299_readreg (state, 0x1b);
 475
 476         dprintk ("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __FUNCTION__, sync);
 477         *status = 0;
 478
 479         if (signal > 10)
 480                 *status |= FE_HAS_SIGNAL;
 481
 482         if (sync & 0x80)
 483                 *status |= FE_HAS_CARRIER;
 484
 485         if (sync & 0x10)
 486                 *status |= FE_HAS_VITERBI;
 487
 488         if (sync & 0x08)
 489                 *status |= FE_HAS_SYNC;
 490
 491         if ((sync & 0x98) == 0x98)
 492                 *status |= FE_HAS_LOCK;
 493
 494         return 0;
 495 }
 496
 497 static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber)
 498 {
 499         struct stv0299_state* state = fe->demodulator_priv;
 500
 501         if (state->errmode != STATUS_BER) return 0;
 502         *ber = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
 503
 504         return 0;
 505 }
 506
 507 static int stv0299_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 508 {
 509         struct stv0299_state* state = fe->demodulator_priv;
 510
 511         s32 signal =  0xffff - ((stv0299_readreg (state, 0x18) << 8)
 512                                | stv0299_readreg (state, 0x19));
 513
 514         dprintk ("%s : FE_READ_SIGNAL_STRENGTH : AGC2I: 0x%02x%02x, signal=0x%04x\n", __FUNCTION__,
 515                  stv0299_readreg (state, 0x18),
 516                  stv0299_readreg (state, 0x19), (int) signal);
 517
 518         signal = signal * 5 / 4;
 519         *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal;
 520
 521         return 0;
 522 }
 523
 524 static int stv0299_read_snr(struct dvb_frontend* fe, u16* snr)
 525 {
 526         struct stv0299_state* state = fe->demodulator_priv;
 527
 528         s32 xsnr = 0xffff - ((stv0299_readreg (state, 0x24) << 8)
 529                            | stv0299_readreg (state, 0x25));
 530         xsnr = 3 * (xsnr - 0xa100);
 531         *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr;
 532
 533         return 0;
 534 }
 535
 536 static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 537 {
 538         struct stv0299_state* state = fe->demodulator_priv;
 539
 540         if (state->errmode != STATUS_UCBLOCKS) *ucblocks = 0;
 541         else *ucblocks = (stv0299_readreg (state, 0x1d) << 8) | stv0299_readreg (state, 0x1e);
 542
 543         return 0;
 544 }
 545
 546 static int stv0299_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
 547 {
 548         struct stv0299_state* state = fe->demodulator_priv;
 549         int invval = 0;
 550
 551         dprintk ("%s : FE_SET_FRONTEND\n", __FUNCTION__);
 552
 553         // set the inversion
 554         if (p->inversion == INVERSION_OFF) invval = 0;
 555         else if (p->inversion == INVERSION_ON) invval = 1;
 556         else {
 557                 printk("stv0299 does not support auto-inversion\n");
 558                 return -EINVAL;
 559         }
 560         if (state->config->invert) invval = (~invval) & 1;
 561         stv0299_writeregI(state, 0x0c, (stv0299_readreg(state, 0x0c) & 0xfe) | invval);
 562
 563         stv0299_writeregI(state, 0x05, 0xb5);   /*  enable i2c repeater on stv0299  */
 564         state->config->pll_set(fe, state->i2c, p);
 565         stv0299_writeregI(state, 0x05, 0x35);   /*  disable i2c repeater on stv0299  */
 566
 567         stv0299_set_FEC (state, p->u.qpsk.fec_inner);
 568         stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate);
 569         stv0299_writeregI(state, 0x22, 0x00);
 570         stv0299_writeregI(state, 0x23, 0x00);
 571
 572         state->tuner_frequency = p->frequency;
 573         state->fec_inner = p->u.qpsk.fec_inner;
 574         state->symbol_rate = p->u.qpsk.symbol_rate;
 575
 576         return 0;
 577 }
 578
 579 static int stv0299_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
 580 {
 581         struct stv0299_state* state = fe->demodulator_priv;
 582         s32 derot_freq;
 583         int invval;
 584
 585         derot_freq = (s32)(s16) ((stv0299_readreg (state, 0x22) << 8)
 586                                 | stv0299_readreg (state, 0x23));
 587
 588         derot_freq *= (state->config->mclk >> 16);
 589         derot_freq += 500;
 590         derot_freq /= 1000;
 591
 592         p->frequency += derot_freq;
 593
 594         invval = stv0299_readreg (state, 0x0c) & 1;
 595         if (state->config->invert) invval = (~invval) & 1;
 596         p->inversion = invval ? INVERSION_ON : INVERSION_OFF;
 597
 598         p->u.qpsk.fec_inner = stv0299_get_fec (state);
 599         p->u.qpsk.symbol_rate = stv0299_get_symbolrate (state);
 600
 601         return 0;
 602 }
 603
 604 static int stv0299_sleep(struct dvb_frontend* fe)
 605 {
 606         struct stv0299_state* state = fe->demodulator_priv;
 607
 608         stv0299_writeregI(state, 0x02, 0x80);
 609         state->initialised = 0;
 610
 611         return 0;
 612 }
 613
 614 static int stv0299_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
 615 {
 616         struct stv0299_state* state = fe->demodulator_priv;
 617
 618         fesettings->min_delay_ms = state->config->min_delay_ms;
 619         if (fesettings->parameters.u.qpsk.symbol_rate < 10000000) {
 620                 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 32000;
 621                 fesettings->max_drift = 5000;
 622         } else {
 623                 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 16000;
 624                 fesettings->max_drift = fesettings->parameters.u.qpsk.symbol_rate / 2000;
 625         }
 626         return 0;
 627 }
 628
 629 static void stv0299_release(struct dvb_frontend* fe)
 630 {
 631         struct stv0299_state* state = fe->demodulator_priv;
 632         kfree(state);
 633 }
 634
 635 static struct dvb_frontend_ops stv0299_ops;
 636
 637 struct dvb_frontend* stv0299_attach(const struct stv0299_config* config,
 638                                     struct i2c_adapter* i2c)
 639 {
 640         struct stv0299_state* state = NULL;
 641         int id;
 642
 643         /* allocate memory for the internal state */
 644         state = kmalloc(sizeof(struct stv0299_state), GFP_KERNEL);
 645         if (state == NULL) goto error;
 646
 647         /* setup the state */
 648         state->config = config;
 649         state->i2c = i2c;
 650         memcpy(&state->ops, &stv0299_ops, sizeof(struct dvb_frontend_ops));
 651         state->initialised = 0;
 652         state->tuner_frequency = 0;
 653         state->symbol_rate = 0;
 654         state->fec_inner = 0;
 655         state->errmode = STATUS_BER;
 656
 657         /* check if the demod is there */
 658         stv0299_writeregI(state, 0x02, 0x34); /* standby off */
 659         msleep(200);
 660         id = stv0299_readreg(state, 0x00);
 661
 662         /* register 0x00 contains 0xa1 for STV0299 and STV0299B */
 663         /* register 0x00 might contain 0x80 when returning from standby */
 664         if (id != 0xa1 && id != 0x80) goto error;
 665
 666         /* create dvb_frontend */
 667         state->frontend.ops = &state->ops;
 668         state->frontend.demodulator_priv = state;
 669         return &state->frontend;
 670
 671 error:
 672         kfree(state);
 673         return NULL;
 674 }
 675
 676 static struct dvb_frontend_ops stv0299_ops = {
 677
 678         .info = {
 679                 .name                   = "ST STV0299 DVB-S",
 680                 .type                   = FE_QPSK,
 681                 .frequency_min          = 950000,
 682                 .frequency_max          = 2150000,
 683                 .frequency_stepsize     = 125,   /* kHz for QPSK frontends */
 684                 .frequency_tolerance    = 0,
 685                 .symbol_rate_min        = 1000000,
 686                 .symbol_rate_max        = 45000000,
 687                 .symbol_rate_tolerance  = 500,  /* ppm */
 688                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 689                       FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
 690                       FE_CAN_QPSK |
 691                       FE_CAN_FEC_AUTO
 692         },
 693
 694         .release = stv0299_release,
 695
 696         .init = stv0299_init,
 697         .sleep = stv0299_sleep,
 698
 699         .set_frontend = stv0299_set_frontend,
 700         .get_frontend = stv0299_get_frontend,
 701         .get_tune_settings = stv0299_get_tune_settings,
 702
 703         .read_status = stv0299_read_status,
 704         .read_ber = stv0299_read_ber,
 705         .read_signal_strength = stv0299_read_signal_strength,
 706         .read_snr = stv0299_read_snr,
 707         .read_ucblocks = stv0299_read_ucblocks,
 708
 709         .diseqc_send_master_cmd = stv0299_send_diseqc_msg,
 710         .diseqc_send_burst = stv0299_send_diseqc_burst,
 711         .set_tone = stv0299_set_tone,
 712         .set_voltage = stv0299_set_voltage,
 713         .dishnetwork_send_legacy_command = stv0299_send_legacy_dish_cmd,
 714 };
 715
 716 module_param(debug_legacy_dish_switch, int, 0444);
 717 MODULE_PARM_DESC(debug_legacy_dish_switch, "Enable timing analysis for Dish Network legacy switches");
 718
 719 module_param(debug, int, 0644);
 720 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
 721
 722 MODULE_DESCRIPTION("ST STV0299 DVB Demodulator driver");
 723 MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, "
 724               "Andreas Oberritter, Andrew de Quincey, Kenneth Aafløy");
 725 MODULE_LICENSE("GPL");
 726
 727 EXPORT_SYMBOL(stv0299_enable_plli2c);
 728 EXPORT_SYMBOL(stv0299_writereg);
 729 EXPORT_SYMBOL(stv0299_attach);