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         u32 ucblocks;
  67 };
  68
  69 #define STATUS_BER 0
  70 #define STATUS_UCBLOCKS 1
  71
  72 static int debug;
  73 static int debug_legacy_dish_switch;
  74 #define dprintk(args...) \
  75         do { \
  76                 if (debug) printk(KERN_DEBUG "stv0299: " args); \
  77         } while (0)
  78
  79
  80 static int stv0299_writeregI (struct stv0299_state* state, u8 reg, u8 data)
  81 {
  82         int ret;
  83         u8 buf [] = { reg, data };
  84         struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
  85
  86         ret = i2c_transfer (state->i2c, &msg, 1);
  87
  88         if (ret != 1)
  89                 dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, "
  90                         "ret == %i)\n", __func__, reg, data, ret);
  91
  92         return (ret != 1) ? -EREMOTEIO : 0;
  93 }
  94
  95 static int stv0299_write(struct dvb_frontend* fe, u8 *buf, int len)
  96 {
  97         struct stv0299_state* state = fe->demodulator_priv;
  98
  99         if (len != 2)
 100                 return -EINVAL;
 101
 102         return stv0299_writeregI(state, buf[0], buf[1]);
 103 }
 104
 105 static u8 stv0299_readreg (struct stv0299_state* state, u8 reg)
 106 {
 107         int ret;
 108         u8 b0 [] = { reg };
 109         u8 b1 [] = { 0 };
 110         struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
 111                            { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
 112
 113         ret = i2c_transfer (state->i2c, msg, 2);
 114
 115         if (ret != 2)
 116                 dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n",
 117                                 __func__, reg, ret);
 118
 119         return b1[0];
 120 }
 121
 122 static int stv0299_readregs (struct stv0299_state* state, u8 reg1, u8 *b, u8 len)
 123 {
 124         int ret;
 125         struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = &reg1, .len = 1 },
 126                            { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } };
 127
 128         ret = i2c_transfer (state->i2c, msg, 2);
 129
 130         if (ret != 2)
 131                 dprintk("%s: readreg error (ret == %i)\n", __func__, ret);
 132
 133         return ret == 2 ? 0 : ret;
 134 }
 135
 136 static int stv0299_set_FEC (struct stv0299_state* state, fe_code_rate_t fec)
 137 {
 138         dprintk ("%s\n", __func__);
 139
 140         switch (fec) {
 141         case FEC_AUTO:
 142         {
 143                 return stv0299_writeregI (state, 0x31, 0x1f);
 144         }
 145         case FEC_1_2:
 146         {
 147                 return stv0299_writeregI (state, 0x31, 0x01);
 148         }
 149         case FEC_2_3:
 150         {
 151                 return stv0299_writeregI (state, 0x31, 0x02);
 152         }
 153         case FEC_3_4:
 154         {
 155                 return stv0299_writeregI (state, 0x31, 0x04);
 156         }
 157         case FEC_5_6:
 158         {
 159                 return stv0299_writeregI (state, 0x31, 0x08);
 160         }
 161         case FEC_7_8:
 162         {
 163                 return stv0299_writeregI (state, 0x31, 0x10);
 164         }
 165         default:
 166         {
 167                 return -EINVAL;
 168         }
 169     }
 170 }
 171
 172 static fe_code_rate_t stv0299_get_fec (struct stv0299_state* state)
 173 {
 174         static fe_code_rate_t fec_tab [] = { FEC_2_3, FEC_3_4, FEC_5_6,
 175                                              FEC_7_8, FEC_1_2 };
 176         u8 index;
 177
 178         dprintk ("%s\n", __func__);
 179
 180         index = stv0299_readreg (state, 0x1b);
 181         index &= 0x7;
 182
 183         if (index > 4)
 184                 return FEC_AUTO;
 185
 186         return fec_tab [index];
 187 }
 188
 189 static int stv0299_wait_diseqc_fifo (struct stv0299_state* state, int timeout)
 190 {
 191         unsigned long start = jiffies;
 192
 193         dprintk ("%s\n", __func__);
 194
 195         while (stv0299_readreg(state, 0x0a) & 1) {
 196                 if (jiffies - start > timeout) {
 197                         dprintk ("%s: timeout!!\n", __func__);
 198                         return -ETIMEDOUT;
 199                 }
 200                 msleep(10);
 201         };
 202
 203         return 0;
 204 }
 205
 206 static int stv0299_wait_diseqc_idle (struct stv0299_state* state, int timeout)
 207 {
 208         unsigned long start = jiffies;
 209
 210         dprintk ("%s\n", __func__);
 211
 212         while ((stv0299_readreg(state, 0x0a) & 3) != 2 ) {
 213                 if (jiffies - start > timeout) {
 214                         dprintk ("%s: timeout!!\n", __func__);
 215                         return -ETIMEDOUT;
 216                 }
 217                 msleep(10);
 218         };
 219
 220         return 0;
 221 }
 222
 223 static int stv0299_set_symbolrate (struct dvb_frontend* fe, u32 srate)
 224 {
 225         struct stv0299_state* state = fe->demodulator_priv;
 226         u64 big = srate;
 227         u32 ratio;
 228
 229         // check rate is within limits
 230         if ((srate < 1000000) || (srate > 45000000)) return -EINVAL;
 231
 232         // calculate value to program
 233         big = big << 20;
 234         big += (state->config->mclk-1); // round correctly
 235         do_div(big, state->config->mclk);
 236         ratio = big << 4;
 237
 238         return state->config->set_symbol_rate(fe, srate, ratio);
 239 }
 240
 241 static int stv0299_get_symbolrate (struct stv0299_state* state)
 242 {
 243         u32 Mclk = state->config->mclk / 4096L;
 244         u32 srate;
 245         s32 offset;
 246         u8 sfr[3];
 247         s8 rtf;
 248
 249         dprintk ("%s\n", __func__);
 250
 251         stv0299_readregs (state, 0x1f, sfr, 3);
 252         stv0299_readregs (state, 0x1a, (u8 *)&rtf, 1);
 253
 254         srate = (sfr[0] << 8) | sfr[1];
 255         srate *= Mclk;
 256         srate /= 16;
 257         srate += (sfr[2] >> 4) * Mclk / 256;
 258         offset = (s32) rtf * (srate / 4096L);
 259         offset /= 128;
 260
 261         dprintk ("%s : srate = %i\n", __func__, srate);
 262         dprintk ("%s : ofset = %i\n", __func__, offset);
 263
 264         srate += offset;
 265
 266         srate += 1000;
 267         srate /= 2000;
 268         srate *= 2000;
 269
 270         return srate;
 271 }
 272
 273 static int stv0299_send_diseqc_msg (struct dvb_frontend* fe,
 274                                     struct dvb_diseqc_master_cmd *m)
 275 {
 276         struct stv0299_state* state = fe->demodulator_priv;
 277         u8 val;
 278         int i;
 279
 280         dprintk ("%s\n", __func__);
 281
 282         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 283                 return -ETIMEDOUT;
 284
 285         val = stv0299_readreg (state, 0x08);
 286
 287         if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x6))  /* DiSEqC mode */
 288                 return -EREMOTEIO;
 289
 290         for (i=0; i<m->msg_len; i++) {
 291                 if (stv0299_wait_diseqc_fifo (state, 100) < 0)
 292                         return -ETIMEDOUT;
 293
 294                 if (stv0299_writeregI (state, 0x09, m->msg[i]))
 295                         return -EREMOTEIO;
 296         }
 297
 298         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 299                 return -ETIMEDOUT;
 300
 301         return 0;
 302 }
 303
 304 static int stv0299_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
 305 {
 306         struct stv0299_state* state = fe->demodulator_priv;
 307         u8 val;
 308
 309         dprintk ("%s\n", __func__);
 310
 311         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 312                 return -ETIMEDOUT;
 313
 314         val = stv0299_readreg (state, 0x08);
 315
 316         if (stv0299_writeregI (state, 0x08, (val & ~0x7) | 0x2))        /* burst mode */
 317                 return -EREMOTEIO;
 318
 319         if (stv0299_writeregI (state, 0x09, burst == SEC_MINI_A ? 0x00 : 0xff))
 320                 return -EREMOTEIO;
 321
 322         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 323                 return -ETIMEDOUT;
 324
 325         if (stv0299_writeregI (state, 0x08, val))
 326                 return -EREMOTEIO;
 327
 328         return 0;
 329 }
 330
 331 static int stv0299_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
 332 {
 333         struct stv0299_state* state = fe->demodulator_priv;
 334         u8 val;
 335
 336         if (stv0299_wait_diseqc_idle (state, 100) < 0)
 337                 return -ETIMEDOUT;
 338
 339         val = stv0299_readreg (state, 0x08);
 340
 341         switch (tone) {
 342         case SEC_TONE_ON:
 343                 return stv0299_writeregI (state, 0x08, val | 0x3);
 344
 345         case SEC_TONE_OFF:
 346                 return stv0299_writeregI (state, 0x08, (val & ~0x3) | 0x02);
 347
 348         default:
 349                 return -EINVAL;
 350         }
 351 }
 352
 353 static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
 354 {
 355         struct stv0299_state* state = fe->demodulator_priv;
 356         u8 reg0x08;
 357         u8 reg0x0c;
 358
 359         dprintk("%s: %s\n", __func__,
 360                 voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
 361                 voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
 362
 363         reg0x08 = stv0299_readreg (state, 0x08);
 364         reg0x0c = stv0299_readreg (state, 0x0c);
 365
 366         /**
 367          *  H/V switching over OP0, OP1 and OP2 are LNB power enable bits
 368          */
 369         reg0x0c &= 0x0f;
 370         reg0x08 = (reg0x08 & 0x3f) | (state->config->lock_output << 6);
 371
 372         switch (voltage) {
 373         case SEC_VOLTAGE_13:
 374                 if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0)
 375                         reg0x0c |= 0x10; /* OP1 off, OP0 on */
 376                 else
 377                         reg0x0c |= 0x40; /* OP1 on, OP0 off */
 378                 break;
 379         case SEC_VOLTAGE_18:
 380                 reg0x0c |= 0x50; /* OP1 on, OP0 on */
 381                 break;
 382         case SEC_VOLTAGE_OFF:
 383                 /* LNB power off! */
 384                 reg0x08 = 0x00;
 385                 reg0x0c = 0x00;
 386                 break;
 387         default:
 388                 return -EINVAL;
 389         };
 390
 391         if (state->config->op0_off)
 392                 reg0x0c &= ~0x10;
 393
 394         stv0299_writeregI(state, 0x08, reg0x08);
 395         return stv0299_writeregI(state, 0x0c, reg0x0c);
 396 }
 397
 398 static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long cmd)
 399 {
 400         struct stv0299_state* state = fe->demodulator_priv;
 401         u8 reg0x08;
 402         u8 reg0x0c;
 403         u8 lv_mask = 0x40;
 404         u8 last = 1;
 405         int i;
 406         struct timeval nexttime;
 407         struct timeval tv[10];
 408
 409         reg0x08 = stv0299_readreg (state, 0x08);
 410         reg0x0c = stv0299_readreg (state, 0x0c);
 411         reg0x0c &= 0x0f;
 412         stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
 413         if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0)
 414                 lv_mask = 0x10;
 415
 416         cmd = cmd << 1;
 417         if (debug_legacy_dish_switch)
 418                 printk ("%s switch command: 0x%04lx\n",__func__, cmd);
 419
 420         do_gettimeofday (&nexttime);
 421         if (debug_legacy_dish_switch)
 422                 memcpy (&tv[0], &nexttime, sizeof (struct timeval));
 423         stv0299_writeregI (state, 0x0c, reg0x0c | 0x50); /* set LNB to 18V */
 424
 425         dvb_frontend_sleep_until(&nexttime, 32000);
 426
 427         for (i=0; i<9; i++) {
 428                 if (debug_legacy_dish_switch)
 429                         do_gettimeofday (&tv[i+1]);
 430                 if((cmd & 0x01) != last) {
 431                         /* set voltage to (last ? 13V : 18V) */
 432                         stv0299_writeregI (state, 0x0c, reg0x0c | (last ? lv_mask : 0x50));
 433                         last = (last) ? 0 : 1;
 434                 }
 435
 436                 cmd = cmd >> 1;
 437
 438                 if (i != 8)
 439                         dvb_frontend_sleep_until(&nexttime, 8000);
 440         }
 441         if (debug_legacy_dish_switch) {
 442                 printk ("%s(%d): switch delay (should be 32k followed by all 8k\n",
 443                         __func__, fe->dvb->num);
 444                 for (i = 1; i < 10; i++)
 445                         printk ("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
 446         }
 447
 448         return 0;
 449 }
 450
 451 static int stv0299_init (struct dvb_frontend* fe)
 452 {
 453         struct stv0299_state* state = fe->demodulator_priv;
 454         int i;
 455         u8 reg;
 456         u8 val;
 457
 458         dprintk("stv0299: init chip\n");
 459
 460         for (i = 0; ; i += 2)  {
 461                 reg = state->config->inittab[i];
 462                 val = state->config->inittab[i+1];
 463                 if (reg == 0xff && val == 0xff)
 464                         break;
 465                 if (reg == 0x0c && state->config->op0_off)
 466                         val &= ~0x10;
 467                 stv0299_writeregI(state, reg, val);
 468         }
 469
 470         return 0;
 471 }
 472
 473 static int stv0299_read_status(struct dvb_frontend* fe, fe_status_t* status)
 474 {
 475         struct stv0299_state* state = fe->demodulator_priv;
 476
 477         u8 signal = 0xff - stv0299_readreg (state, 0x18);
 478         u8 sync = stv0299_readreg (state, 0x1b);
 479
 480         dprintk ("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync);
 481         *status = 0;
 482
 483         if (signal > 10)
 484                 *status |= FE_HAS_SIGNAL;
 485
 486         if (sync & 0x80)
 487                 *status |= FE_HAS_CARRIER;
 488
 489         if (sync & 0x10)
 490                 *status |= FE_HAS_VITERBI;
 491
 492         if (sync & 0x08)
 493                 *status |= FE_HAS_SYNC;
 494
 495         if ((sync & 0x98) == 0x98)
 496                 *status |= FE_HAS_LOCK;
 497
 498         return 0;
 499 }
 500
 501 static int stv0299_read_ber(struct dvb_frontend* fe, u32* ber)
 502 {
 503         struct stv0299_state* state = fe->demodulator_priv;
 504
 505         if (state->errmode != STATUS_BER)
 506                 return -ENOSYS;
 507
 508         *ber = stv0299_readreg(state, 0x1e) | (stv0299_readreg(state, 0x1d) << 8);
 509
 510         return 0;
 511 }
 512
 513 static int stv0299_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 514 {
 515         struct stv0299_state* state = fe->demodulator_priv;
 516
 517         s32 signal =  0xffff - ((stv0299_readreg (state, 0x18) << 8)
 518                                | stv0299_readreg (state, 0x19));
 519
 520         dprintk ("%s : FE_READ_SIGNAL_STRENGTH : AGC2I: 0x%02x%02x, signal=0x%04x\n", __func__,
 521                  stv0299_readreg (state, 0x18),
 522                  stv0299_readreg (state, 0x19), (int) signal);
 523
 524         signal = signal * 5 / 4;
 525         *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal;
 526
 527         return 0;
 528 }
 529
 530 static int stv0299_read_snr(struct dvb_frontend* fe, u16* snr)
 531 {
 532         struct stv0299_state* state = fe->demodulator_priv;
 533
 534         s32 xsnr = 0xffff - ((stv0299_readreg (state, 0x24) << 8)
 535                            | stv0299_readreg (state, 0x25));
 536         xsnr = 3 * (xsnr - 0xa100);
 537         *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr;
 538
 539         return 0;
 540 }
 541
 542 static int stv0299_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 543 {
 544         struct stv0299_state* state = fe->demodulator_priv;
 545
 546         if (state->errmode != STATUS_UCBLOCKS)
 547                 return -ENOSYS;
 548
 549         state->ucblocks += stv0299_readreg(state, 0x1e);
 550         state->ucblocks += (stv0299_readreg(state, 0x1d) << 8);
 551         *ucblocks = state->ucblocks;
 552
 553         return 0;
 554 }
 555
 556 static int stv0299_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
 557 {
 558         struct stv0299_state* state = fe->demodulator_priv;
 559         int invval = 0;
 560
 561         dprintk ("%s : FE_SET_FRONTEND\n", __func__);
 562         if (state->config->set_ts_params)
 563                 state->config->set_ts_params(fe, 0);
 564
 565         // set the inversion
 566         if (p->inversion == INVERSION_OFF) invval = 0;
 567         else if (p->inversion == INVERSION_ON) invval = 1;
 568         else {
 569                 printk("stv0299 does not support auto-inversion\n");
 570                 return -EINVAL;
 571         }
 572         if (state->config->invert) invval = (~invval) & 1;
 573         stv0299_writeregI(state, 0x0c, (stv0299_readreg(state, 0x0c) & 0xfe) | invval);
 574
 575         if (fe->ops.tuner_ops.set_params) {
 576                 fe->ops.tuner_ops.set_params(fe, p);
 577                 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 578         }
 579
 580         stv0299_set_FEC (state, p->u.qpsk.fec_inner);
 581         stv0299_set_symbolrate (fe, p->u.qpsk.symbol_rate);
 582         stv0299_writeregI(state, 0x22, 0x00);
 583         stv0299_writeregI(state, 0x23, 0x00);
 584
 585         state->tuner_frequency = p->frequency;
 586         state->fec_inner = p->u.qpsk.fec_inner;
 587         state->symbol_rate = p->u.qpsk.symbol_rate;
 588
 589         return 0;
 590 }
 591
 592 static int stv0299_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters * p)
 593 {
 594         struct stv0299_state* state = fe->demodulator_priv;
 595         s32 derot_freq;
 596         int invval;
 597
 598         derot_freq = (s32)(s16) ((stv0299_readreg (state, 0x22) << 8)
 599                                 | stv0299_readreg (state, 0x23));
 600
 601         derot_freq *= (state->config->mclk >> 16);
 602         derot_freq += 500;
 603         derot_freq /= 1000;
 604
 605         p->frequency += derot_freq;
 606
 607         invval = stv0299_readreg (state, 0x0c) & 1;
 608         if (state->config->invert) invval = (~invval) & 1;
 609         p->inversion = invval ? INVERSION_ON : INVERSION_OFF;
 610
 611         p->u.qpsk.fec_inner = stv0299_get_fec (state);
 612         p->u.qpsk.symbol_rate = stv0299_get_symbolrate (state);
 613
 614         return 0;
 615 }
 616
 617 static int stv0299_sleep(struct dvb_frontend* fe)
 618 {
 619         struct stv0299_state* state = fe->demodulator_priv;
 620
 621         stv0299_writeregI(state, 0x02, 0x80);
 622         state->initialised = 0;
 623
 624         return 0;
 625 }
 626
 627 static int stv0299_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
 628 {
 629         struct stv0299_state* state = fe->demodulator_priv;
 630
 631         if (enable) {
 632                 stv0299_writeregI(state, 0x05, 0xb5);
 633         } else {
 634                 stv0299_writeregI(state, 0x05, 0x35);
 635         }
 636         udelay(1);
 637         return 0;
 638 }
 639
 640 static int stv0299_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
 641 {
 642         struct stv0299_state* state = fe->demodulator_priv;
 643
 644         fesettings->min_delay_ms = state->config->min_delay_ms;
 645         if (fesettings->parameters.u.qpsk.symbol_rate < 10000000) {
 646                 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 32000;
 647                 fesettings->max_drift = 5000;
 648         } else {
 649                 fesettings->step_size = fesettings->parameters.u.qpsk.symbol_rate / 16000;
 650                 fesettings->max_drift = fesettings->parameters.u.qpsk.symbol_rate / 2000;
 651         }
 652         return 0;
 653 }
 654
 655 static void stv0299_release(struct dvb_frontend* fe)
 656 {
 657         struct stv0299_state* state = fe->demodulator_priv;
 658         kfree(state);
 659 }
 660
 661 static struct dvb_frontend_ops stv0299_ops;
 662
 663 struct dvb_frontend* stv0299_attach(const struct stv0299_config* config,
 664                                     struct i2c_adapter* i2c)
 665 {
 666         struct stv0299_state* state = NULL;
 667         int id;
 668
 669         /* allocate memory for the internal state */
 670         state = kzalloc(sizeof(struct stv0299_state), GFP_KERNEL);
 671         if (state == NULL) goto error;
 672
 673         /* setup the state */
 674         state->config = config;
 675         state->i2c = i2c;
 676         state->initialised = 0;
 677         state->tuner_frequency = 0;
 678         state->symbol_rate = 0;
 679         state->fec_inner = 0;
 680         state->errmode = STATUS_BER;
 681
 682         /* check if the demod is there */
 683         stv0299_writeregI(state, 0x02, 0x34); /* standby off */
 684         msleep(200);
 685         id = stv0299_readreg(state, 0x00);
 686
 687         /* register 0x00 contains 0xa1 for STV0299 and STV0299B */
 688         /* register 0x00 might contain 0x80 when returning from standby */
 689         if (id != 0xa1 && id != 0x80) goto error;
 690
 691         /* create dvb_frontend */
 692         memcpy(&state->frontend.ops, &stv0299_ops, sizeof(struct dvb_frontend_ops));
 693         state->frontend.demodulator_priv = state;
 694         return &state->frontend;
 695
 696 error:
 697         kfree(state);
 698         return NULL;
 699 }
 700
 701 static struct dvb_frontend_ops stv0299_ops = {
 702
 703         .info = {
 704                 .name                   = "ST STV0299 DVB-S",
 705                 .type                   = FE_QPSK,
 706                 .frequency_min          = 950000,
 707                 .frequency_max          = 2150000,
 708                 .frequency_stepsize     = 125,   /* kHz for QPSK frontends */
 709                 .frequency_tolerance    = 0,
 710                 .symbol_rate_min        = 1000000,
 711                 .symbol_rate_max        = 45000000,
 712                 .symbol_rate_tolerance  = 500,  /* ppm */
 713                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 714                       FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
 715                       FE_CAN_QPSK |
 716                       FE_CAN_FEC_AUTO
 717         },
 718
 719         .release = stv0299_release,
 720
 721         .init = stv0299_init,
 722         .sleep = stv0299_sleep,
 723         .write = stv0299_write,
 724         .i2c_gate_ctrl = stv0299_i2c_gate_ctrl,
 725
 726         .set_frontend = stv0299_set_frontend,
 727         .get_frontend = stv0299_get_frontend,
 728         .get_tune_settings = stv0299_get_tune_settings,
 729
 730         .read_status = stv0299_read_status,
 731         .read_ber = stv0299_read_ber,
 732         .read_signal_strength = stv0299_read_signal_strength,
 733         .read_snr = stv0299_read_snr,
 734         .read_ucblocks = stv0299_read_ucblocks,
 735
 736         .diseqc_send_master_cmd = stv0299_send_diseqc_msg,
 737         .diseqc_send_burst = stv0299_send_diseqc_burst,
 738         .set_tone = stv0299_set_tone,
 739         .set_voltage = stv0299_set_voltage,
 740         .dishnetwork_send_legacy_command = stv0299_send_legacy_dish_cmd,
 741 };
 742
 743 module_param(debug_legacy_dish_switch, int, 0444);
 744 MODULE_PARM_DESC(debug_legacy_dish_switch, "Enable timing analysis for Dish Network legacy switches");
 745
 746 module_param(debug, int, 0644);
 747 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
 748
 749 MODULE_DESCRIPTION("ST STV0299 DVB Demodulator driver");
 750 MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, "
 751               "Andreas Oberritter, Andrew de Quincey, Kenneth Aafly");
 752 MODULE_LICENSE("GPL");
 753
 754 EXPORT_SYMBOL(stv0299_attach);