drivers/media/dvb/frontends/stv0900_core.c

   1 /*
   2  * stv0900_core.c
   3  *
   4  * Driver for ST STV0900 satellite demodulator IC.
   5  *
   6  * Copyright (C) ST Microelectronics.
   7  * Copyright (C) 2009 NetUP Inc.
   8  * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 #include <linux/kernel.h>
  27 #include <linux/module.h>
  28 #include <linux/string.h>
  29 #include <linux/slab.h>
  30 #include <linux/i2c.h>
  31
  32 #include "stv0900.h"
  33 #include "stv0900_reg.h"
  34 #include "stv0900_priv.h"
  35 #include "stv0900_init.h"
  36
  37 int stvdebug = 1;
  38 module_param_named(debug, stvdebug, int, 0644);
  39
  40 /* internal params node */
  41 struct stv0900_inode {
  42         /* pointer for internal params, one for each pair of demods */
  43         struct stv0900_internal         *internal;
  44         struct stv0900_inode            *next_inode;
  45 };
  46
  47 /* first internal params */
  48 static struct stv0900_inode *stv0900_first_inode;
  49
  50 /* find chip by i2c adapter and i2c address */
  51 static struct stv0900_inode *find_inode(struct i2c_adapter *i2c_adap,
  52                                                         u8 i2c_addr)
  53 {
  54         struct stv0900_inode *temp_chip = stv0900_first_inode;
  55
  56         if (temp_chip != NULL) {
  57                 /*
  58                  Search of the last stv0900 chip or
  59                  find it by i2c adapter and i2c address */
  60                 while ((temp_chip != NULL) &&
  61                         ((temp_chip->internal->i2c_adap != i2c_adap) ||
  62                         (temp_chip->internal->i2c_addr != i2c_addr)))
  63
  64                         temp_chip = temp_chip->next_inode;
  65
  66         }
  67
  68         return temp_chip;
  69 }
  70
  71 /* deallocating chip */
  72 static void remove_inode(struct stv0900_internal *internal)
  73 {
  74         struct stv0900_inode *prev_node = stv0900_first_inode;
  75         struct stv0900_inode *del_node = find_inode(internal->i2c_adap,
  76                                                 internal->i2c_addr);
  77
  78         if (del_node != NULL) {
  79                 if (del_node == stv0900_first_inode) {
  80                         stv0900_first_inode = del_node->next_inode;
  81                 } else {
  82                         while (prev_node->next_inode != del_node)
  83                                 prev_node = prev_node->next_inode;
  84
  85                         if (del_node->next_inode == NULL)
  86                                 prev_node->next_inode = NULL;
  87                         else
  88                                 prev_node->next_inode =
  89                                         prev_node->next_inode->next_inode;
  90                 }
  91
  92                 kfree(del_node);
  93         }
  94 }
  95
  96 /* allocating new chip */
  97 static struct stv0900_inode *append_internal(struct stv0900_internal *internal)
  98 {
  99         struct stv0900_inode *new_node = stv0900_first_inode;
 100
 101         if (new_node == NULL) {
 102                 new_node = kmalloc(sizeof(struct stv0900_inode), GFP_KERNEL);
 103                 stv0900_first_inode = new_node;
 104         } else {
 105                 while (new_node->next_inode != NULL)
 106                         new_node = new_node->next_inode;
 107
 108                 new_node->next_inode = kmalloc(sizeof(struct stv0900_inode),
 109                                                                 GFP_KERNEL);
 110                 if (new_node->next_inode != NULL)
 111                         new_node = new_node->next_inode;
 112                 else
 113                         new_node = NULL;
 114         }
 115
 116         if (new_node != NULL) {
 117                 new_node->internal = internal;
 118                 new_node->next_inode = NULL;
 119         }
 120
 121         return new_node;
 122 }
 123
 124 s32 ge2comp(s32 a, s32 width)
 125 {
 126         if (width == 32)
 127                 return a;
 128         else
 129                 return (a >= (1 << (width - 1))) ? (a - (1 << width)) : a;
 130 }
 131
 132 void stv0900_write_reg(struct stv0900_internal *intp, u16 reg_addr,
 133                                                                 u8 reg_data)
 134 {
 135         u8 data[3];
 136         int ret;
 137         struct i2c_msg i2cmsg = {
 138                 .addr  = intp->i2c_addr,
 139                 .flags = 0,
 140                 .len   = 3,
 141                 .buf   = data,
 142         };
 143
 144         data[0] = MSB(reg_addr);
 145         data[1] = LSB(reg_addr);
 146         data[2] = reg_data;
 147
 148         ret = i2c_transfer(intp->i2c_adap, &i2cmsg, 1);
 149         if (ret != 1)
 150                 dprintk("%s: i2c error %d\n", __func__, ret);
 151 }
 152
 153 u8 stv0900_read_reg(struct stv0900_internal *intp, u16 reg)
 154 {
 155         int ret;
 156         u8 b0[] = { MSB(reg), LSB(reg) };
 157         u8 buf = 0;
 158         struct i2c_msg msg[] = {
 159                 {
 160                         .addr   = intp->i2c_addr,
 161                         .flags  = 0,
 162                         .buf = b0,
 163                         .len = 2,
 164                 }, {
 165                         .addr   = intp->i2c_addr,
 166                         .flags  = I2C_M_RD,
 167                         .buf = &buf,
 168                         .len = 1,
 169                 },
 170         };
 171
 172         ret = i2c_transfer(intp->i2c_adap, msg, 2);
 173         if (ret != 2)
 174                 dprintk("%s: i2c error %d, reg[0x%02x]\n",
 175                                 __func__, ret, reg);
 176
 177         return buf;
 178 }
 179
 180 static void extract_mask_pos(u32 label, u8 *mask, u8 *pos)
 181 {
 182         u8 position = 0, i = 0;
 183
 184         (*mask) = label & 0xff;
 185
 186         while ((position == 0) && (i < 8)) {
 187                 position = ((*mask) >> i) & 0x01;
 188                 i++;
 189         }
 190
 191         (*pos) = (i - 1);
 192 }
 193
 194 void stv0900_write_bits(struct stv0900_internal *intp, u32 label, u8 val)
 195 {
 196         u8 reg, mask, pos;
 197
 198         reg = stv0900_read_reg(intp, (label >> 16) & 0xffff);
 199         extract_mask_pos(label, &mask, &pos);
 200
 201         val = mask & (val << pos);
 202
 203         reg = (reg & (~mask)) | val;
 204         stv0900_write_reg(intp, (label >> 16) & 0xffff, reg);
 205
 206 }
 207
 208 u8 stv0900_get_bits(struct stv0900_internal *intp, u32 label)
 209 {
 210         u8 val = 0xff;
 211         u8 mask, pos;
 212
 213         extract_mask_pos(label, &mask, &pos);
 214
 215         val = stv0900_read_reg(intp, label >> 16);
 216         val = (val & mask) >> pos;
 217
 218         return val;
 219 }
 220
 221 static enum fe_stv0900_error stv0900_initialize(struct stv0900_internal *intp)
 222 {
 223         s32 i;
 224
 225         if (intp == NULL)
 226                 return STV0900_INVALID_HANDLE;
 227
 228         intp->chip_id = stv0900_read_reg(intp, R0900_MID);
 229
 230         if (intp->errs != STV0900_NO_ERROR)
 231                 return intp->errs;
 232
 233         /*Startup sequence*/
 234         stv0900_write_reg(intp, R0900_P1_DMDISTATE, 0x5c);
 235         stv0900_write_reg(intp, R0900_P2_DMDISTATE, 0x5c);
 236         msleep(3);
 237         stv0900_write_reg(intp, R0900_P1_TNRCFG, 0x6c);
 238         stv0900_write_reg(intp, R0900_P2_TNRCFG, 0x6f);
 239         stv0900_write_reg(intp, R0900_P1_I2CRPT, 0x20);
 240         stv0900_write_reg(intp, R0900_P2_I2CRPT, 0x20);
 241         stv0900_write_reg(intp, R0900_NCOARSE, 0x13);
 242         msleep(3);
 243         stv0900_write_reg(intp, R0900_I2CCFG, 0x08);
 244
 245         switch (intp->clkmode) {
 246         case 0:
 247         case 2:
 248                 stv0900_write_reg(intp, R0900_SYNTCTRL, 0x20
 249                                 | intp->clkmode);
 250                 break;
 251         default:
 252                 /* preserve SELOSCI bit */
 253                 i = 0x02 & stv0900_read_reg(intp, R0900_SYNTCTRL);
 254                 stv0900_write_reg(intp, R0900_SYNTCTRL, 0x20 | i);
 255                 break;
 256         }
 257
 258         msleep(3);
 259         for (i = 0; i < 181; i++)
 260                 stv0900_write_reg(intp, STV0900_InitVal[i][0],
 261                                 STV0900_InitVal[i][1]);
 262
 263         if (stv0900_read_reg(intp, R0900_MID) >= 0x20) {
 264                 stv0900_write_reg(intp, R0900_TSGENERAL, 0x0c);
 265                 for (i = 0; i < 32; i++)
 266                         stv0900_write_reg(intp, STV0900_Cut20_AddOnVal[i][0],
 267                                         STV0900_Cut20_AddOnVal[i][1]);
 268         }
 269
 270         stv0900_write_reg(intp, R0900_P1_FSPYCFG, 0x6c);
 271         stv0900_write_reg(intp, R0900_P2_FSPYCFG, 0x6c);
 272
 273         stv0900_write_reg(intp, R0900_P1_PDELCTRL2, 0x01);
 274         stv0900_write_reg(intp, R0900_P2_PDELCTRL2, 0x21);
 275
 276         stv0900_write_reg(intp, R0900_P1_PDELCTRL3, 0x20);
 277         stv0900_write_reg(intp, R0900_P2_PDELCTRL3, 0x20);
 278
 279         stv0900_write_reg(intp, R0900_TSTRES0, 0x80);
 280         stv0900_write_reg(intp, R0900_TSTRES0, 0x00);
 281
 282         return STV0900_NO_ERROR;
 283 }
 284
 285 static u32 stv0900_get_mclk_freq(struct stv0900_internal *intp, u32 ext_clk)
 286 {
 287         u32 mclk = 90000000, div = 0, ad_div = 0;
 288
 289         div = stv0900_get_bits(intp, F0900_M_DIV);
 290         ad_div = ((stv0900_get_bits(intp, F0900_SELX1RATIO) == 1) ? 4 : 6);
 291
 292         mclk = (div + 1) * ext_clk / ad_div;
 293
 294         dprintk("%s: Calculated Mclk = %d\n", __func__, mclk);
 295
 296         return mclk;
 297 }
 298
 299 static enum fe_stv0900_error stv0900_set_mclk(struct stv0900_internal *intp, u32 mclk)
 300 {
 301         u32 m_div, clk_sel;
 302
 303         dprintk("%s: Mclk set to %d, Quartz = %d\n", __func__, mclk,
 304                         intp->quartz);
 305
 306         if (intp == NULL)
 307                 return STV0900_INVALID_HANDLE;
 308
 309         if (intp->errs)
 310                 return STV0900_I2C_ERROR;
 311
 312         clk_sel = ((stv0900_get_bits(intp, F0900_SELX1RATIO) == 1) ? 4 : 6);
 313         m_div = ((clk_sel * mclk) / intp->quartz) - 1;
 314         stv0900_write_bits(intp, F0900_M_DIV, m_div);
 315         intp->mclk = stv0900_get_mclk_freq(intp,
 316                                         intp->quartz);
 317
 318         /*Set the DiseqC frequency to 22KHz */
 319         /*
 320                 Formula:
 321                 DiseqC_TX_Freq= MasterClock/(32*F22TX_Reg)
 322                 DiseqC_RX_Freq= MasterClock/(32*F22RX_Reg)
 323         */
 324         m_div = intp->mclk / 704000;
 325         stv0900_write_reg(intp, R0900_P1_F22TX, m_div);
 326         stv0900_write_reg(intp, R0900_P1_F22RX, m_div);
 327
 328         stv0900_write_reg(intp, R0900_P2_F22TX, m_div);
 329         stv0900_write_reg(intp, R0900_P2_F22RX, m_div);
 330
 331         if ((intp->errs))
 332                 return STV0900_I2C_ERROR;
 333
 334         return STV0900_NO_ERROR;
 335 }
 336
 337 static u32 stv0900_get_err_count(struct stv0900_internal *intp, int cntr,
 338                                         enum fe_stv0900_demod_num demod)
 339 {
 340         u32 lsb, msb, hsb, err_val;
 341
 342         switch (cntr) {
 343         case 0:
 344         default:
 345                 hsb = stv0900_get_bits(intp, ERR_CNT12);
 346                 msb = stv0900_get_bits(intp, ERR_CNT11);
 347                 lsb = stv0900_get_bits(intp, ERR_CNT10);
 348                 break;
 349         case 1:
 350                 hsb = stv0900_get_bits(intp, ERR_CNT22);
 351                 msb = stv0900_get_bits(intp, ERR_CNT21);
 352                 lsb = stv0900_get_bits(intp, ERR_CNT20);
 353                 break;
 354         }
 355
 356         err_val = (hsb << 16) + (msb << 8) + (lsb);
 357
 358         return err_val;
 359 }
 360
 361 static int stv0900_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
 362 {
 363         struct stv0900_state *state = fe->demodulator_priv;
 364         struct stv0900_internal *intp = state->internal;
 365         enum fe_stv0900_demod_num demod = state->demod;
 366
 367         stv0900_write_bits(intp, I2CT_ON, enable);
 368
 369         return 0;
 370 }
 371
 372 static void stv0900_set_ts_parallel_serial(struct stv0900_internal *intp,
 373                                         enum fe_stv0900_clock_type path1_ts,
 374                                         enum fe_stv0900_clock_type path2_ts)
 375 {
 376
 377         dprintk("%s\n", __func__);
 378
 379         if (intp->chip_id >= 0x20) {
 380                 switch (path1_ts) {
 381                 case STV0900_PARALLEL_PUNCT_CLOCK:
 382                 case STV0900_DVBCI_CLOCK:
 383                         switch (path2_ts) {
 384                         case STV0900_SERIAL_PUNCT_CLOCK:
 385                         case STV0900_SERIAL_CONT_CLOCK:
 386                         default:
 387                                 stv0900_write_reg(intp, R0900_TSGENERAL,
 388                                                         0x00);
 389                                 break;
 390                         case STV0900_PARALLEL_PUNCT_CLOCK:
 391                         case STV0900_DVBCI_CLOCK:
 392                                 stv0900_write_reg(intp, R0900_TSGENERAL,
 393                                                         0x06);
 394                                 stv0900_write_bits(intp,
 395                                                 F0900_P1_TSFIFO_MANSPEED, 3);
 396                                 stv0900_write_bits(intp,
 397                                                 F0900_P2_TSFIFO_MANSPEED, 0);
 398                                 stv0900_write_reg(intp,
 399                                                 R0900_P1_TSSPEED, 0x14);
 400                                 stv0900_write_reg(intp,
 401                                                 R0900_P2_TSSPEED, 0x28);
 402                                 break;
 403                         }
 404                         break;
 405                 case STV0900_SERIAL_PUNCT_CLOCK:
 406                 case STV0900_SERIAL_CONT_CLOCK:
 407                 default:
 408                         switch (path2_ts) {
 409                         case STV0900_SERIAL_PUNCT_CLOCK:
 410                         case STV0900_SERIAL_CONT_CLOCK:
 411                         default:
 412                                 stv0900_write_reg(intp,
 413                                                 R0900_TSGENERAL, 0x0C);
 414                                 break;
 415                         case STV0900_PARALLEL_PUNCT_CLOCK:
 416                         case STV0900_DVBCI_CLOCK:
 417                                 stv0900_write_reg(intp,
 418                                                 R0900_TSGENERAL, 0x0A);
 419                                 dprintk("%s: 0x0a\n", __func__);
 420                                 break;
 421                         }
 422                         break;
 423                 }
 424         } else {
 425                 switch (path1_ts) {
 426                 case STV0900_PARALLEL_PUNCT_CLOCK:
 427                 case STV0900_DVBCI_CLOCK:
 428                         switch (path2_ts) {
 429                         case STV0900_SERIAL_PUNCT_CLOCK:
 430                         case STV0900_SERIAL_CONT_CLOCK:
 431                         default:
 432                                 stv0900_write_reg(intp, R0900_TSGENERAL1X,
 433                                                         0x10);
 434                                 break;
 435                         case STV0900_PARALLEL_PUNCT_CLOCK:
 436                         case STV0900_DVBCI_CLOCK:
 437                                 stv0900_write_reg(intp, R0900_TSGENERAL1X,
 438                                                         0x16);
 439                                 stv0900_write_bits(intp,
 440                                                 F0900_P1_TSFIFO_MANSPEED, 3);
 441                                 stv0900_write_bits(intp,
 442                                                 F0900_P2_TSFIFO_MANSPEED, 0);
 443                                 stv0900_write_reg(intp, R0900_P1_TSSPEED,
 444                                                         0x14);
 445                                 stv0900_write_reg(intp, R0900_P2_TSSPEED,
 446                                                         0x28);
 447                                 break;
 448                         }
 449
 450                         break;
 451                 case STV0900_SERIAL_PUNCT_CLOCK:
 452                 case STV0900_SERIAL_CONT_CLOCK:
 453                 default:
 454                         switch (path2_ts) {
 455                         case STV0900_SERIAL_PUNCT_CLOCK:
 456                         case STV0900_SERIAL_CONT_CLOCK:
 457                         default:
 458                                 stv0900_write_reg(intp, R0900_TSGENERAL1X,
 459                                                         0x14);
 460                                 break;
 461                         case STV0900_PARALLEL_PUNCT_CLOCK:
 462                         case STV0900_DVBCI_CLOCK:
 463                                 stv0900_write_reg(intp, R0900_TSGENERAL1X,
 464                                                         0x12);
 465                                 dprintk("%s: 0x12\n", __func__);
 466                                 break;
 467                         }
 468
 469                         break;
 470                 }
 471         }
 472
 473         switch (path1_ts) {
 474         case STV0900_PARALLEL_PUNCT_CLOCK:
 475                 stv0900_write_bits(intp, F0900_P1_TSFIFO_SERIAL, 0x00);
 476                 stv0900_write_bits(intp, F0900_P1_TSFIFO_DVBCI, 0x00);
 477                 break;
 478         case STV0900_DVBCI_CLOCK:
 479                 stv0900_write_bits(intp, F0900_P1_TSFIFO_SERIAL, 0x00);
 480                 stv0900_write_bits(intp, F0900_P1_TSFIFO_DVBCI, 0x01);
 481                 break;
 482         case STV0900_SERIAL_PUNCT_CLOCK:
 483                 stv0900_write_bits(intp, F0900_P1_TSFIFO_SERIAL, 0x01);
 484                 stv0900_write_bits(intp, F0900_P1_TSFIFO_DVBCI, 0x00);
 485                 break;
 486         case STV0900_SERIAL_CONT_CLOCK:
 487                 stv0900_write_bits(intp, F0900_P1_TSFIFO_SERIAL, 0x01);
 488                 stv0900_write_bits(intp, F0900_P1_TSFIFO_DVBCI, 0x01);
 489                 break;
 490         default:
 491                 break;
 492         }
 493
 494         switch (path2_ts) {
 495         case STV0900_PARALLEL_PUNCT_CLOCK:
 496                 stv0900_write_bits(intp, F0900_P2_TSFIFO_SERIAL, 0x00);
 497                 stv0900_write_bits(intp, F0900_P2_TSFIFO_DVBCI, 0x00);
 498                 break;
 499         case STV0900_DVBCI_CLOCK:
 500                 stv0900_write_bits(intp, F0900_P2_TSFIFO_SERIAL, 0x00);
 501                 stv0900_write_bits(intp, F0900_P2_TSFIFO_DVBCI, 0x01);
 502                 break;
 503         case STV0900_SERIAL_PUNCT_CLOCK:
 504                 stv0900_write_bits(intp, F0900_P2_TSFIFO_SERIAL, 0x01);
 505                 stv0900_write_bits(intp, F0900_P2_TSFIFO_DVBCI, 0x00);
 506                 break;
 507         case STV0900_SERIAL_CONT_CLOCK:
 508                 stv0900_write_bits(intp, F0900_P2_TSFIFO_SERIAL, 0x01);
 509                 stv0900_write_bits(intp, F0900_P2_TSFIFO_DVBCI, 0x01);
 510                 break;
 511         default:
 512                 break;
 513         }
 514
 515         stv0900_write_bits(intp, F0900_P2_RST_HWARE, 1);
 516         stv0900_write_bits(intp, F0900_P2_RST_HWARE, 0);
 517         stv0900_write_bits(intp, F0900_P1_RST_HWARE, 1);
 518         stv0900_write_bits(intp, F0900_P1_RST_HWARE, 0);
 519 }
 520
 521 void stv0900_set_tuner(struct dvb_frontend *fe, u32 frequency,
 522                                                         u32 bandwidth)
 523 {
 524         struct dvb_frontend_ops *frontend_ops = NULL;
 525         struct dvb_tuner_ops *tuner_ops = NULL;
 526
 527         if (&fe->ops)
 528                 frontend_ops = &fe->ops;
 529
 530         if (&frontend_ops->tuner_ops)
 531                 tuner_ops = &frontend_ops->tuner_ops;
 532
 533         if (tuner_ops->set_frequency) {
 534                 if ((tuner_ops->set_frequency(fe, frequency)) < 0)
 535                         dprintk("%s: Invalid parameter\n", __func__);
 536                 else
 537                         dprintk("%s: Frequency=%d\n", __func__, frequency);
 538
 539         }
 540
 541         if (tuner_ops->set_bandwidth) {
 542                 if ((tuner_ops->set_bandwidth(fe, bandwidth)) < 0)
 543                         dprintk("%s: Invalid parameter\n", __func__);
 544                 else
 545                         dprintk("%s: Bandwidth=%d\n", __func__, bandwidth);
 546
 547         }
 548 }
 549
 550 void stv0900_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
 551 {
 552         struct dvb_frontend_ops *frontend_ops = NULL;
 553         struct dvb_tuner_ops *tuner_ops = NULL;
 554
 555         if (&fe->ops)
 556                 frontend_ops = &fe->ops;
 557
 558         if (&frontend_ops->tuner_ops)
 559                 tuner_ops = &frontend_ops->tuner_ops;
 560
 561         if (tuner_ops->set_bandwidth) {
 562                 if ((tuner_ops->set_bandwidth(fe, bandwidth)) < 0)
 563                         dprintk("%s: Invalid parameter\n", __func__);
 564                 else
 565                         dprintk("%s: Bandwidth=%d\n", __func__, bandwidth);
 566
 567         }
 568 }
 569
 570 u32 stv0900_get_freq_auto(struct stv0900_internal *intp, int demod)
 571 {
 572         u32 freq, round;
 573         /*      Formulat :
 574         Tuner_Frequency(MHz)    = Regs / 64
 575         Tuner_granularity(MHz)  = Regs / 2048
 576         real_Tuner_Frequency    = Tuner_Frequency(MHz) - Tuner_granularity(MHz)
 577         */
 578         freq = (stv0900_get_bits(intp, TUN_RFFREQ2) << 10) +
 579                 (stv0900_get_bits(intp, TUN_RFFREQ1) << 2) +
 580                 stv0900_get_bits(intp, TUN_RFFREQ0);
 581
 582         freq = (freq * 1000) / 64;
 583
 584         round = (stv0900_get_bits(intp, TUN_RFRESTE1) >> 2) +
 585                 stv0900_get_bits(intp, TUN_RFRESTE0);
 586
 587         round = (round * 1000) / 2048;
 588
 589         return freq + round;
 590 }
 591
 592 void stv0900_set_tuner_auto(struct stv0900_internal *intp, u32 Frequency,
 593                                                 u32 Bandwidth, int demod)
 594 {
 595         u32 tunerFrequency;
 596         /* Formulat:
 597         Tuner_frequency_reg= Frequency(MHz)*64
 598         */
 599         tunerFrequency = (Frequency * 64) / 1000;
 600
 601         stv0900_write_bits(intp, TUN_RFFREQ2, (tunerFrequency >> 10));
 602         stv0900_write_bits(intp, TUN_RFFREQ1, (tunerFrequency >> 2) & 0xff);
 603         stv0900_write_bits(intp, TUN_RFFREQ0, (tunerFrequency & 0x03));
 604         /* Low Pass Filter = BW /2 (MHz)*/
 605         stv0900_write_bits(intp, TUN_BW, Bandwidth / 2000000);
 606         /* Tuner Write trig */
 607         stv0900_write_reg(intp, TNRLD, 1);
 608 }
 609
 610 static s32 stv0900_get_rf_level(struct stv0900_internal *intp,
 611                                 const struct stv0900_table *lookup,
 612                                 enum fe_stv0900_demod_num demod)
 613 {
 614         s32 agc_gain = 0,
 615                 imin,
 616                 imax,
 617                 i,
 618                 rf_lvl = 0;
 619
 620         dprintk("%s\n", __func__);
 621
 622         if ((lookup == NULL) || (lookup->size <= 0))
 623                 return 0;
 624
 625         agc_gain = MAKEWORD(stv0900_get_bits(intp, AGCIQ_VALUE1),
 626                                 stv0900_get_bits(intp, AGCIQ_VALUE0));
 627
 628         imin = 0;
 629         imax = lookup->size - 1;
 630         if (INRANGE(lookup->table[imin].regval, agc_gain,
 631                                         lookup->table[imax].regval)) {
 632                 while ((imax - imin) > 1) {
 633                         i = (imax + imin) >> 1;
 634
 635                         if (INRANGE(lookup->table[imin].regval,
 636                                         agc_gain,
 637                                         lookup->table[i].regval))
 638                                 imax = i;
 639                         else
 640                                 imin = i;
 641                 }
 642
 643                 rf_lvl = (s32)agc_gain - lookup->table[imin].regval;
 644                 rf_lvl *= (lookup->table[imax].realval -
 645                                 lookup->table[imin].realval);
 646                 rf_lvl /= (lookup->table[imax].regval -
 647                                 lookup->table[imin].regval);
 648                 rf_lvl += lookup->table[imin].realval;
 649         } else if (agc_gain > lookup->table[0].regval)
 650                 rf_lvl = 5;
 651         else if (agc_gain < lookup->table[lookup->size-1].regval)
 652                 rf_lvl = -100;
 653
 654         dprintk("%s: RFLevel = %d\n", __func__, rf_lvl);
 655
 656         return rf_lvl;
 657 }
 658
 659 static int stv0900_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 660 {
 661         struct stv0900_state *state = fe->demodulator_priv;
 662         struct stv0900_internal *internal = state->internal;
 663         s32 rflevel = stv0900_get_rf_level(internal, &stv0900_rf,
 664                                                                 state->demod);
 665
 666         rflevel = (rflevel + 100) * (65535 / 70);
 667         if (rflevel < 0)
 668                 rflevel = 0;
 669
 670         if (rflevel > 65535)
 671                 rflevel = 65535;
 672
 673         *strength = rflevel;
 674
 675         return 0;
 676 }
 677
 678 static s32 stv0900_carr_get_quality(struct dvb_frontend *fe,
 679                                         const struct stv0900_table *lookup)
 680 {
 681         struct stv0900_state *state = fe->demodulator_priv;
 682         struct stv0900_internal *intp = state->internal;
 683         enum fe_stv0900_demod_num demod = state->demod;
 684
 685         s32     c_n = -100,
 686                 regval,
 687                 imin,
 688                 imax,
 689                 i,
 690                 noise_field1,
 691                 noise_field0;
 692
 693         dprintk("%s\n", __func__);
 694
 695         if (stv0900_get_standard(fe, demod) == STV0900_DVBS2_STANDARD) {
 696                 noise_field1 = NOSPLHT_NORMED1;
 697                 noise_field0 = NOSPLHT_NORMED0;
 698         } else {
 699                 noise_field1 = NOSDATAT_NORMED1;
 700                 noise_field0 = NOSDATAT_NORMED0;
 701         }
 702
 703         if (stv0900_get_bits(intp, LOCK_DEFINITIF)) {
 704                 if ((lookup != NULL) && lookup->size) {
 705                         regval = 0;
 706                         msleep(5);
 707                         for (i = 0; i < 16; i++) {
 708                                 regval += MAKEWORD(stv0900_get_bits(intp,
 709                                                                 noise_field1),
 710                                                 stv0900_get_bits(intp,
 711                                                                 noise_field0));
 712                                 msleep(1);
 713                         }
 714
 715                         regval /= 16;
 716                         imin = 0;
 717                         imax = lookup->size - 1;
 718                         if (INRANGE(lookup->table[imin].regval,
 719                                         regval,
 720                                         lookup->table[imax].regval)) {
 721                                 while ((imax - imin) > 1) {
 722                                         i = (imax + imin) >> 1;
 723                                         if (INRANGE(lookup->table[imin].regval,
 724                                                     regval,
 725                                                     lookup->table[i].regval))
 726                                                 imax = i;
 727                                         else
 728                                                 imin = i;
 729                                 }
 730
 731                                 c_n = ((regval - lookup->table[imin].regval)
 732                                                 * (lookup->table[imax].realval
 733                                                 - lookup->table[imin].realval)
 734                                                 / (lookup->table[imax].regval
 735                                                 - lookup->table[imin].regval))
 736                                                 + lookup->table[imin].realval;
 737                         } else if (regval < lookup->table[imin].regval)
 738                                 c_n = 1000;
 739                 }
 740         }
 741
 742         return c_n;
 743 }
 744
 745 static int stv0900_read_ucblocks(struct dvb_frontend *fe, u32 * ucblocks)
 746 {
 747         struct stv0900_state *state = fe->demodulator_priv;
 748         struct stv0900_internal *intp = state->internal;
 749         enum fe_stv0900_demod_num demod = state->demod;
 750         u8 err_val1, err_val0;
 751         u32 header_err_val = 0;
 752
 753         *ucblocks = 0x0;
 754         if (stv0900_get_standard(fe, demod) == STV0900_DVBS2_STANDARD) {
 755                 /* DVB-S2 delineator errors count */
 756
 757                 /* retreiving number for errnous headers */
 758                 err_val1 = stv0900_read_reg(intp, BBFCRCKO1);
 759                 err_val0 = stv0900_read_reg(intp, BBFCRCKO0);
 760                 header_err_val = (err_val1 << 8) | err_val0;
 761
 762                 /* retreiving number for errnous packets */
 763                 err_val1 = stv0900_read_reg(intp, UPCRCKO1);
 764                 err_val0 = stv0900_read_reg(intp, UPCRCKO0);
 765                 *ucblocks = (err_val1 << 8) | err_val0;
 766                 *ucblocks += header_err_val;
 767         }
 768
 769         return 0;
 770 }
 771
 772 static int stv0900_read_snr(struct dvb_frontend *fe, u16 *snr)
 773 {
 774         s32 snrlcl = stv0900_carr_get_quality(fe,
 775                         (const struct stv0900_table *)&stv0900_s2_cn);
 776         snrlcl = (snrlcl + 30) * 384;
 777         if (snrlcl < 0)
 778                 snrlcl = 0;
 779
 780         if (snrlcl > 65535)
 781                 snrlcl = 65535;
 782
 783         *snr = snrlcl;
 784
 785         return 0;
 786 }
 787
 788 static u32 stv0900_get_ber(struct stv0900_internal *intp,
 789                                 enum fe_stv0900_demod_num demod)
 790 {
 791         u32 ber = 10000000, i;
 792         s32 demod_state;
 793
 794         demod_state = stv0900_get_bits(intp, HEADER_MODE);
 795
 796         switch (demod_state) {
 797         case STV0900_SEARCH:
 798         case STV0900_PLH_DETECTED:
 799         default:
 800                 ber = 10000000;
 801                 break;
 802         case STV0900_DVBS_FOUND:
 803                 ber = 0;
 804                 for (i = 0; i < 5; i++) {
 805                         msleep(5);
 806                         ber += stv0900_get_err_count(intp, 0, demod);
 807                 }
 808
 809                 ber /= 5;
 810                 if (stv0900_get_bits(intp, PRFVIT)) {
 811                         ber *= 9766;
 812                         ber = ber >> 13;
 813                 }
 814
 815                 break;
 816         case STV0900_DVBS2_FOUND:
 817                 ber = 0;
 818                 for (i = 0; i < 5; i++) {
 819                         msleep(5);
 820                         ber += stv0900_get_err_count(intp, 0, demod);
 821                 }
 822
 823                 ber /= 5;
 824                 if (stv0900_get_bits(intp, PKTDELIN_LOCK)) {
 825                         ber *= 9766;
 826                         ber = ber >> 13;
 827                 }
 828
 829                 break;
 830         }
 831
 832         return ber;
 833 }
 834
 835 static int stv0900_read_ber(struct dvb_frontend *fe, u32 *ber)
 836 {
 837         struct stv0900_state *state = fe->demodulator_priv;
 838         struct stv0900_internal *internal = state->internal;
 839
 840         *ber = stv0900_get_ber(internal, state->demod);
 841
 842         return 0;
 843 }
 844
 845 int stv0900_get_demod_lock(struct stv0900_internal *intp,
 846                         enum fe_stv0900_demod_num demod, s32 time_out)
 847 {
 848         s32 timer = 0,
 849                 lock = 0;
 850
 851         enum fe_stv0900_search_state    dmd_state;
 852
 853         while ((timer < time_out) && (lock == 0)) {
 854                 dmd_state = stv0900_get_bits(intp, HEADER_MODE);
 855                 dprintk("Demod State = %d\n", dmd_state);
 856                 switch (dmd_state) {
 857                 case STV0900_SEARCH:
 858                 case STV0900_PLH_DETECTED:
 859                 default:
 860                         lock = 0;
 861                         break;
 862                 case STV0900_DVBS2_FOUND:
 863                 case STV0900_DVBS_FOUND:
 864                         lock = stv0900_get_bits(intp, LOCK_DEFINITIF);
 865                         break;
 866                 }
 867
 868                 if (lock == 0)
 869                         msleep(10);
 870
 871                 timer += 10;
 872         }
 873
 874         if (lock)
 875                 dprintk("DEMOD LOCK OK\n");
 876         else
 877                 dprintk("DEMOD LOCK FAIL\n");
 878
 879         return lock;
 880 }
 881
 882 void stv0900_stop_all_s2_modcod(struct stv0900_internal *intp,
 883                                 enum fe_stv0900_demod_num demod)
 884 {
 885         s32 regflist,
 886         i;
 887
 888         dprintk("%s\n", __func__);
 889
 890         regflist = MODCODLST0;
 891
 892         for (i = 0; i < 16; i++)
 893                 stv0900_write_reg(intp, regflist + i, 0xff);
 894 }
 895
 896 void stv0900_activate_s2_modcod(struct stv0900_internal *intp,
 897                                 enum fe_stv0900_demod_num demod)
 898 {
 899         u32 matype,
 900                 mod_code,
 901                 fmod,
 902                 reg_index,
 903                 field_index;
 904
 905         dprintk("%s\n", __func__);
 906
 907         if (intp->chip_id <= 0x11) {
 908                 msleep(5);
 909
 910                 mod_code = stv0900_read_reg(intp, PLHMODCOD);
 911                 matype = mod_code & 0x3;
 912                 mod_code = (mod_code & 0x7f) >> 2;
 913
 914                 reg_index = MODCODLSTF - mod_code / 2;
 915                 field_index = mod_code % 2;
 916
 917                 switch (matype) {
 918                 case 0:
 919                 default:
 920                         fmod = 14;
 921                         break;
 922                 case 1:
 923                         fmod = 13;
 924                         break;
 925                 case 2:
 926                         fmod = 11;
 927                         break;
 928                 case 3:
 929                         fmod = 7;
 930                         break;
 931                 }
 932
 933                 if ((INRANGE(STV0900_QPSK_12, mod_code, STV0900_8PSK_910))
 934                                                 && (matype <= 1)) {
 935                         if (field_index == 0)
 936                                 stv0900_write_reg(intp, reg_index,
 937                                                         0xf0 | fmod);
 938                         else
 939                                 stv0900_write_reg(intp, reg_index,
 940                                                         (fmod << 4) | 0xf);
 941                 }
 942
 943         } else if (intp->chip_id >= 0x12) {
 944                 for (reg_index = 0; reg_index < 7; reg_index++)
 945                         stv0900_write_reg(intp, MODCODLST0 + reg_index, 0xff);
 946
 947                 stv0900_write_reg(intp, MODCODLSTE, 0xff);
 948                 stv0900_write_reg(intp, MODCODLSTF, 0xcf);
 949                 for (reg_index = 0; reg_index < 8; reg_index++)
 950                         stv0900_write_reg(intp, MODCODLST7 + reg_index, 0xcc);
 951
 952
 953         }
 954 }
 955
 956 void stv0900_activate_s2_modcod_single(struct stv0900_internal *intp,
 957                                         enum fe_stv0900_demod_num demod)
 958 {
 959         u32 reg_index;
 960
 961         dprintk("%s\n", __func__);
 962
 963         stv0900_write_reg(intp, MODCODLST0, 0xff);
 964         stv0900_write_reg(intp, MODCODLST1, 0xf0);
 965         stv0900_write_reg(intp, MODCODLSTF, 0x0f);
 966         for (reg_index = 0; reg_index < 13; reg_index++)
 967                 stv0900_write_reg(intp, MODCODLST2 + reg_index, 0);
 968
 969 }
 970
 971 static enum dvbfe_algo stv0900_frontend_algo(struct dvb_frontend *fe)
 972 {
 973         return DVBFE_ALGO_CUSTOM;
 974 }
 975
 976 static int stb0900_set_property(struct dvb_frontend *fe,
 977                                 struct dtv_property *tvp)
 978 {
 979         dprintk("%s(..)\n", __func__);
 980
 981         return 0;
 982 }
 983
 984 static int stb0900_get_property(struct dvb_frontend *fe,
 985                                 struct dtv_property *tvp)
 986 {
 987         dprintk("%s(..)\n", __func__);
 988
 989         return 0;
 990 }
 991
 992 void stv0900_start_search(struct stv0900_internal *intp,
 993                                 enum fe_stv0900_demod_num demod)
 994 {
 995         u32 freq;
 996         s16 freq_s16 ;
 997
 998         stv0900_write_bits(intp, DEMOD_MODE, 0x1f);
 999         if (intp->chip_id == 0x10)
1000                 stv0900_write_reg(intp, CORRELEXP, 0xaa);
1001
1002         if (intp->chip_id < 0x20)
1003                 stv0900_write_reg(intp, CARHDR, 0x55);
1004
1005         if (intp->chip_id <= 0x20) {
1006                 if (intp->symbol_rate[0] <= 5000000) {
1007                         stv0900_write_reg(intp, CARCFG, 0x44);
1008                         stv0900_write_reg(intp, CFRUP1, 0x0f);
1009                         stv0900_write_reg(intp, CFRUP0, 0xff);
1010                         stv0900_write_reg(intp, CFRLOW1, 0xf0);
1011                         stv0900_write_reg(intp, CFRLOW0, 0x00);
1012                         stv0900_write_reg(intp, RTCS2, 0x68);
1013                 } else {
1014                         stv0900_write_reg(intp, CARCFG, 0xc4);
1015                         stv0900_write_reg(intp, RTCS2, 0x44);
1016                 }
1017
1018         } else { /*cut 3.0 above*/
1019                 if (intp->symbol_rate[demod] <= 5000000)
1020                         stv0900_write_reg(intp, RTCS2, 0x68);
1021                 else
1022                         stv0900_write_reg(intp, RTCS2, 0x44);
1023
1024                 stv0900_write_reg(intp, CARCFG, 0x46);
1025                 if (intp->srch_algo[demod] == STV0900_WARM_START) {
1026                         freq = 1000 << 16;
1027                         freq /= (intp->mclk / 1000);
1028                         freq_s16 = (s16)freq;
1029                 } else {
1030                         freq = (intp->srch_range[demod] / 2000);
1031                         if (intp->symbol_rate[demod] <= 5000000)
1032                                 freq += 80;
1033                         else
1034                                 freq += 600;
1035
1036                         freq = freq << 16;
1037                         freq /= (intp->mclk / 1000);
1038                         freq_s16 = (s16)freq;
1039                 }
1040
1041                 stv0900_write_bits(intp, CFR_UP1, MSB(freq_s16));
1042                 stv0900_write_bits(intp, CFR_UP0, LSB(freq_s16));
1043                 freq_s16 *= (-1);
1044                 stv0900_write_bits(intp, CFR_LOW1, MSB(freq_s16));
1045                 stv0900_write_bits(intp, CFR_LOW0, LSB(freq_s16));
1046         }
1047
1048         stv0900_write_reg(intp, CFRINIT1, 0);
1049         stv0900_write_reg(intp, CFRINIT0, 0);
1050
1051         if (intp->chip_id >= 0x20) {
1052                 stv0900_write_reg(intp, EQUALCFG, 0x41);
1053                 stv0900_write_reg(intp, FFECFG, 0x41);
1054
1055                 if ((intp->srch_standard[demod] == STV0900_SEARCH_DVBS1) ||
1056                         (intp->srch_standard[demod] == STV0900_SEARCH_DSS) ||
1057                         (intp->srch_standard[demod] == STV0900_AUTO_SEARCH)) {
1058                         stv0900_write_reg(intp, VITSCALE,
1059                                                                 0x82);
1060                         stv0900_write_reg(intp, VAVSRVIT, 0x0);
1061                 }
1062         }
1063
1064         stv0900_write_reg(intp, SFRSTEP, 0x00);
1065         stv0900_write_reg(intp, TMGTHRISE, 0xe0);
1066         stv0900_write_reg(intp, TMGTHFALL, 0xc0);
1067         stv0900_write_bits(intp, SCAN_ENABLE, 0);
1068         stv0900_write_bits(intp, CFR_AUTOSCAN, 0);
1069         stv0900_write_bits(intp, S1S2_SEQUENTIAL, 0);
1070         stv0900_write_reg(intp, RTC, 0x88);
1071         if (intp->chip_id >= 0x20) {
1072                 if (intp->symbol_rate[demod] < 2000000) {
1073                         if (intp->chip_id <= 0x20)
1074                                 stv0900_write_reg(intp, CARFREQ, 0x39);
1075                         else  /*cut 3.0*/
1076                                 stv0900_write_reg(intp, CARFREQ, 0x89);
1077
1078                         stv0900_write_reg(intp, CARHDR, 0x40);
1079                 } else if (intp->symbol_rate[demod] < 10000000) {
1080                         stv0900_write_reg(intp, CARFREQ, 0x4c);
1081                         stv0900_write_reg(intp, CARHDR, 0x20);
1082                 } else {
1083                         stv0900_write_reg(intp, CARFREQ, 0x4b);
1084                         stv0900_write_reg(intp, CARHDR, 0x20);
1085                 }
1086
1087         } else {
1088                 if (intp->symbol_rate[demod] < 10000000)
1089                         stv0900_write_reg(intp, CARFREQ, 0xef);
1090                 else
1091                         stv0900_write_reg(intp, CARFREQ, 0xed);
1092         }
1093
1094         switch (intp->srch_algo[demod]) {
1095         case STV0900_WARM_START:
1096                 stv0900_write_reg(intp, DMDISTATE, 0x1f);
1097                 stv0900_write_reg(intp, DMDISTATE, 0x18);
1098                 break;
1099         case STV0900_COLD_START:
1100                 stv0900_write_reg(intp, DMDISTATE, 0x1f);
1101                 stv0900_write_reg(intp, DMDISTATE, 0x15);
1102                 break;
1103         default:
1104                 break;
1105         }
1106 }
1107
1108 u8 stv0900_get_optim_carr_loop(s32 srate, enum fe_stv0900_modcode modcode,
1109                                                         s32 pilot, u8 chip_id)
1110 {
1111         u8 aclc_value = 0x29;
1112         s32 i;
1113         const struct stv0900_car_loop_optim *cls2, *cllqs2, *cllas2;
1114
1115         dprintk("%s\n", __func__);
1116
1117         if (chip_id <= 0x12) {
1118                 cls2 = FE_STV0900_S2CarLoop;
1119                 cllqs2 = FE_STV0900_S2LowQPCarLoopCut30;
1120                 cllas2 = FE_STV0900_S2APSKCarLoopCut30;
1121         } else if (chip_id == 0x20) {
1122                 cls2 = FE_STV0900_S2CarLoopCut20;
1123                 cllqs2 = FE_STV0900_S2LowQPCarLoopCut20;
1124                 cllas2 = FE_STV0900_S2APSKCarLoopCut20;
1125         } else {
1126                 cls2 = FE_STV0900_S2CarLoopCut30;
1127                 cllqs2 = FE_STV0900_S2LowQPCarLoopCut30;
1128                 cllas2 = FE_STV0900_S2APSKCarLoopCut30;
1129         }
1130
1131         if (modcode < STV0900_QPSK_12) {
1132                 i = 0;
1133                 while ((i < 3) && (modcode != cllqs2[i].modcode))
1134                         i++;
1135
1136                 if (i >= 3)
1137                         i = 2;
1138         } else {
1139                 i = 0;
1140                 while ((i < 14) && (modcode != cls2[i].modcode))
1141                         i++;
1142
1143                 if (i >= 14) {
1144                         i = 0;
1145                         while ((i < 11) && (modcode != cllas2[i].modcode))
1146                                 i++;
1147
1148                         if (i >= 11)
1149                                 i = 10;
1150                 }
1151         }
1152
1153         if (modcode <= STV0900_QPSK_25) {
1154                 if (pilot) {
1155                         if (srate <= 3000000)
1156                                 aclc_value = cllqs2[i].car_loop_pilots_on_2;
1157                         else if (srate <= 7000000)
1158                                 aclc_value = cllqs2[i].car_loop_pilots_on_5;
1159                         else if (srate <= 15000000)
1160                                 aclc_value = cllqs2[i].car_loop_pilots_on_10;
1161                         else if (srate <= 25000000)
1162                                 aclc_value = cllqs2[i].car_loop_pilots_on_20;
1163                         else
1164                                 aclc_value = cllqs2[i].car_loop_pilots_on_30;
1165                 } else {
1166                         if (srate <= 3000000)
1167                                 aclc_value = cllqs2[i].car_loop_pilots_off_2;
1168                         else if (srate <= 7000000)
1169                                 aclc_value = cllqs2[i].car_loop_pilots_off_5;
1170                         else if (srate <= 15000000)
1171                                 aclc_value = cllqs2[i].car_loop_pilots_off_10;
1172                         else if (srate <= 25000000)
1173                                 aclc_value = cllqs2[i].car_loop_pilots_off_20;
1174                         else
1175                                 aclc_value = cllqs2[i].car_loop_pilots_off_30;
1176                 }
1177
1178         } else if (modcode <= STV0900_8PSK_910) {
1179                 if (pilot) {
1180                         if (srate <= 3000000)
1181                                 aclc_value = cls2[i].car_loop_pilots_on_2;
1182                         else if (srate <= 7000000)
1183                                 aclc_value = cls2[i].car_loop_pilots_on_5;
1184                         else if (srate <= 15000000)
1185                                 aclc_value = cls2[i].car_loop_pilots_on_10;
1186                         else if (srate <= 25000000)
1187                                 aclc_value = cls2[i].car_loop_pilots_on_20;
1188                         else
1189                                 aclc_value = cls2[i].car_loop_pilots_on_30;
1190                 } else {
1191                         if (srate <= 3000000)
1192                                 aclc_value = cls2[i].car_loop_pilots_off_2;
1193                         else if (srate <= 7000000)
1194                                 aclc_value = cls2[i].car_loop_pilots_off_5;
1195                         else if (srate <= 15000000)
1196                                 aclc_value = cls2[i].car_loop_pilots_off_10;
1197                         else if (srate <= 25000000)
1198                                 aclc_value = cls2[i].car_loop_pilots_off_20;
1199                         else
1200                                 aclc_value = cls2[i].car_loop_pilots_off_30;
1201                 }
1202
1203         } else {
1204                 if (srate <= 3000000)
1205                         aclc_value = cllas2[i].car_loop_pilots_on_2;
1206                 else if (srate <= 7000000)
1207                         aclc_value = cllas2[i].car_loop_pilots_on_5;
1208                 else if (srate <= 15000000)
1209                         aclc_value = cllas2[i].car_loop_pilots_on_10;
1210                 else if (srate <= 25000000)
1211                         aclc_value = cllas2[i].car_loop_pilots_on_20;
1212                 else
1213                         aclc_value = cllas2[i].car_loop_pilots_on_30;
1214         }
1215
1216         return aclc_value;
1217 }
1218
1219 u8 stv0900_get_optim_short_carr_loop(s32 srate,
1220                                 enum fe_stv0900_modulation modulation,
1221                                 u8 chip_id)
1222 {
1223         const struct stv0900_short_frames_car_loop_optim *s2scl;
1224         const struct stv0900_short_frames_car_loop_optim_vs_mod *s2sclc30;
1225         s32 mod_index = 0;
1226         u8 aclc_value = 0x0b;
1227
1228         dprintk("%s\n", __func__);
1229
1230         s2scl = FE_STV0900_S2ShortCarLoop;
1231         s2sclc30 = FE_STV0900_S2ShortCarLoopCut30;
1232
1233         switch (modulation) {
1234         case STV0900_QPSK:
1235         default:
1236                 mod_index = 0;
1237                 break;
1238         case STV0900_8PSK:
1239                 mod_index = 1;
1240                 break;
1241         case STV0900_16APSK:
1242                 mod_index = 2;
1243                 break;
1244         case STV0900_32APSK:
1245                 mod_index = 3;
1246                 break;
1247         }
1248
1249         if (chip_id >= 0x30) {
1250                 if (srate <= 3000000)
1251                         aclc_value = s2sclc30[mod_index].car_loop_2;
1252                 else if (srate <= 7000000)
1253                         aclc_value = s2sclc30[mod_index].car_loop_5;
1254                 else if (srate <= 15000000)
1255                         aclc_value = s2sclc30[mod_index].car_loop_10;
1256                 else if (srate <= 25000000)
1257                         aclc_value = s2sclc30[mod_index].car_loop_20;
1258                 else
1259                         aclc_value = s2sclc30[mod_index].car_loop_30;
1260
1261         } else if (chip_id >= 0x20) {
1262                 if (srate <= 3000000)
1263                         aclc_value = s2scl[mod_index].car_loop_cut20_2;
1264                 else if (srate <= 7000000)
1265                         aclc_value = s2scl[mod_index].car_loop_cut20_5;
1266                 else if (srate <= 15000000)
1267                         aclc_value = s2scl[mod_index].car_loop_cut20_10;
1268                 else if (srate <= 25000000)
1269                         aclc_value = s2scl[mod_index].car_loop_cut20_20;
1270                 else
1271                         aclc_value = s2scl[mod_index].car_loop_cut20_30;
1272
1273         } else {
1274                 if (srate <= 3000000)
1275                         aclc_value = s2scl[mod_index].car_loop_cut12_2;
1276                 else if (srate <= 7000000)
1277                         aclc_value = s2scl[mod_index].car_loop_cut12_5;
1278                 else if (srate <= 15000000)
1279                         aclc_value = s2scl[mod_index].car_loop_cut12_10;
1280                 else if (srate <= 25000000)
1281                         aclc_value = s2scl[mod_index].car_loop_cut12_20;
1282                 else
1283                         aclc_value = s2scl[mod_index].car_loop_cut12_30;
1284
1285         }
1286
1287         return aclc_value;
1288 }
1289
1290 static
1291 enum fe_stv0900_error stv0900_st_dvbs2_single(struct stv0900_internal *intp,
1292                                         enum fe_stv0900_demod_mode LDPC_Mode,
1293                                         enum fe_stv0900_demod_num demod)
1294 {
1295         enum fe_stv0900_error error = STV0900_NO_ERROR;
1296         s32 reg_ind;
1297
1298         dprintk("%s\n", __func__);
1299
1300         switch (LDPC_Mode) {
1301         case STV0900_DUAL:
1302         default:
1303                 if ((intp->demod_mode != STV0900_DUAL)
1304                         || (stv0900_get_bits(intp, F0900_DDEMOD) != 1)) {
1305                         stv0900_write_reg(intp, R0900_GENCFG, 0x1d);
1306
1307                         intp->demod_mode = STV0900_DUAL;
1308
1309                         stv0900_write_bits(intp, F0900_FRESFEC, 1);
1310                         stv0900_write_bits(intp, F0900_FRESFEC, 0);
1311
1312                         for (reg_ind = 0; reg_ind < 7; reg_ind++)
1313                                 stv0900_write_reg(intp,
1314                                                 R0900_P1_MODCODLST0 + reg_ind,
1315                                                 0xff);
1316                         for (reg_ind = 0; reg_ind < 8; reg_ind++)
1317                                 stv0900_write_reg(intp,
1318                                                 R0900_P1_MODCODLST7 + reg_ind,
1319                                                 0xcc);
1320
1321                         stv0900_write_reg(intp, R0900_P1_MODCODLSTE, 0xff);
1322                         stv0900_write_reg(intp, R0900_P1_MODCODLSTF, 0xcf);
1323
1324                         for (reg_ind = 0; reg_ind < 7; reg_ind++)
1325                                 stv0900_write_reg(intp,
1326                                                 R0900_P2_MODCODLST0 + reg_ind,
1327                                                 0xff);
1328                         for (reg_ind = 0; reg_ind < 8; reg_ind++)
1329                                 stv0900_write_reg(intp,
1330                                                 R0900_P2_MODCODLST7 + reg_ind,
1331                                                 0xcc);
1332
1333                         stv0900_write_reg(intp, R0900_P2_MODCODLSTE, 0xff);
1334                         stv0900_write_reg(intp, R0900_P2_MODCODLSTF, 0xcf);
1335                 }
1336
1337                 break;
1338         case STV0900_SINGLE:
1339                 if (demod == STV0900_DEMOD_2) {
1340                         stv0900_stop_all_s2_modcod(intp, STV0900_DEMOD_1);
1341                         stv0900_activate_s2_modcod_single(intp,
1342                                                         STV0900_DEMOD_2);
1343                         stv0900_write_reg(intp, R0900_GENCFG, 0x06);
1344                 } else {
1345                         stv0900_stop_all_s2_modcod(intp, STV0900_DEMOD_2);
1346                         stv0900_activate_s2_modcod_single(intp,
1347                                                         STV0900_DEMOD_1);
1348                         stv0900_write_reg(intp, R0900_GENCFG, 0x04);
1349                 }
1350
1351                 intp->demod_mode = STV0900_SINGLE;
1352
1353                 stv0900_write_bits(intp, F0900_FRESFEC, 1);
1354                 stv0900_write_bits(intp, F0900_FRESFEC, 0);
1355                 stv0900_write_bits(intp, F0900_P1_ALGOSWRST, 1);
1356                 stv0900_write_bits(intp, F0900_P1_ALGOSWRST, 0);
1357                 stv0900_write_bits(intp, F0900_P2_ALGOSWRST, 1);
1358                 stv0900_write_bits(intp, F0900_P2_ALGOSWRST, 0);
1359                 break;
1360         }
1361
1362         return error;
1363 }
1364
1365 static enum fe_stv0900_error stv0900_init_internal(struct dvb_frontend *fe,
1366                                         struct stv0900_init_params *p_init)
1367 {
1368         struct stv0900_state *state = fe->demodulator_priv;
1369         enum fe_stv0900_error error = STV0900_NO_ERROR;
1370         enum fe_stv0900_error demodError = STV0900_NO_ERROR;
1371         struct stv0900_internal *intp = NULL;
1372         int selosci, i;
1373
1374         struct stv0900_inode *temp_int = find_inode(state->i2c_adap,
1375                                                 state->config->demod_address);
1376
1377         dprintk("%s\n", __func__);
1378
1379         if ((temp_int != NULL) && (p_init->demod_mode == STV0900_DUAL)) {
1380                 state->internal = temp_int->internal;
1381                 (state->internal->dmds_used)++;
1382                 dprintk("%s: Find Internal Structure!\n", __func__);
1383                 return STV0900_NO_ERROR;
1384         } else {
1385                 state->internal = kmalloc(sizeof(struct stv0900_internal),
1386                                                                 GFP_KERNEL);
1387                 if (state->internal == NULL)
1388                         return STV0900_INVALID_HANDLE;
1389                 temp_int = append_internal(state->internal);
1390                 if (temp_int == NULL) {
1391                         kfree(state->internal);
1392                         state->internal = NULL;
1393                         return STV0900_INVALID_HANDLE;
1394                 }
1395                 state->internal->dmds_used = 1;
1396                 state->internal->i2c_adap = state->i2c_adap;
1397                 state->internal->i2c_addr = state->config->demod_address;
1398                 state->internal->clkmode = state->config->clkmode;
1399                 state->internal->errs = STV0900_NO_ERROR;
1400                 dprintk("%s: Create New Internal Structure!\n", __func__);
1401         }
1402
1403         if (state->internal == NULL) {
1404                 error = STV0900_INVALID_HANDLE;
1405                 return error;
1406         }
1407
1408         demodError = stv0900_initialize(state->internal);
1409         if (demodError == STV0900_NO_ERROR) {
1410                         error = STV0900_NO_ERROR;
1411         } else {
1412                 if (demodError == STV0900_INVALID_HANDLE)
1413                         error = STV0900_INVALID_HANDLE;
1414                 else
1415                         error = STV0900_I2C_ERROR;
1416
1417                 return error;
1418         }
1419
1420         intp = state->internal;
1421
1422         intp->demod_mode = p_init->demod_mode;
1423         stv0900_st_dvbs2_single(intp, intp->demod_mode, STV0900_DEMOD_1);
1424         intp->chip_id = stv0900_read_reg(intp, R0900_MID);
1425         intp->rolloff = p_init->rolloff;
1426         intp->quartz = p_init->dmd_ref_clk;
1427
1428         stv0900_write_bits(intp, F0900_P1_ROLLOFF_CONTROL, p_init->rolloff);
1429         stv0900_write_bits(intp, F0900_P2_ROLLOFF_CONTROL, p_init->rolloff);
1430
1431         intp->ts_config = p_init->ts_config;
1432         if (intp->ts_config == NULL)
1433                 stv0900_set_ts_parallel_serial(intp,
1434                                 p_init->path1_ts_clock,
1435                                 p_init->path2_ts_clock);
1436         else {
1437                 for (i = 0; intp->ts_config[i].addr != 0xffff; i++)
1438                         stv0900_write_reg(intp,
1439                                         intp->ts_config[i].addr,
1440                                         intp->ts_config[i].val);
1441
1442                 stv0900_write_bits(intp, F0900_P2_RST_HWARE, 1);
1443                 stv0900_write_bits(intp, F0900_P2_RST_HWARE, 0);
1444                 stv0900_write_bits(intp, F0900_P1_RST_HWARE, 1);
1445                 stv0900_write_bits(intp, F0900_P1_RST_HWARE, 0);
1446         }
1447
1448         intp->tuner_type[0] = p_init->tuner1_type;
1449         intp->tuner_type[1] = p_init->tuner2_type;
1450         /* tuner init */
1451         switch (p_init->tuner1_type) {
1452         case 3: /*FE_AUTO_STB6100:*/
1453                 stv0900_write_reg(intp, R0900_P1_TNRCFG, 0x3c);
1454                 stv0900_write_reg(intp, R0900_P1_TNRCFG2, 0x86);
1455                 stv0900_write_reg(intp, R0900_P1_TNRCFG3, 0x18);
1456                 stv0900_write_reg(intp, R0900_P1_TNRXTAL, 27); /* 27MHz */
1457                 stv0900_write_reg(intp, R0900_P1_TNRSTEPS, 0x05);
1458                 stv0900_write_reg(intp, R0900_P1_TNRGAIN, 0x17);
1459                 stv0900_write_reg(intp, R0900_P1_TNRADJ, 0x1f);
1460                 stv0900_write_reg(intp, R0900_P1_TNRCTL2, 0x0);
1461                 stv0900_write_bits(intp, F0900_P1_TUN_TYPE, 3);
1462                 break;
1463         /* case FE_SW_TUNER: */
1464         default:
1465                 stv0900_write_bits(intp, F0900_P1_TUN_TYPE, 6);
1466                 break;
1467         }
1468
1469         stv0900_write_bits(intp, F0900_P1_TUN_MADDRESS, p_init->tun1_maddress);
1470         switch (p_init->tuner1_adc) {
1471         case 1:
1472                 stv0900_write_reg(intp, R0900_TSTTNR1, 0x26);
1473                 break;
1474         default:
1475                 break;
1476         }
1477
1478         stv0900_write_reg(intp, R0900_P1_TNRLD, 1); /* hw tuner */
1479
1480         /* tuner init */
1481         switch (p_init->tuner2_type) {
1482         case 3: /*FE_AUTO_STB6100:*/
1483                 stv0900_write_reg(intp, R0900_P2_TNRCFG, 0x3c);
1484                 stv0900_write_reg(intp, R0900_P2_TNRCFG2, 0x86);
1485                 stv0900_write_reg(intp, R0900_P2_TNRCFG3, 0x18);
1486                 stv0900_write_reg(intp, R0900_P2_TNRXTAL, 27); /* 27MHz */
1487                 stv0900_write_reg(intp, R0900_P2_TNRSTEPS, 0x05);
1488                 stv0900_write_reg(intp, R0900_P2_TNRGAIN, 0x17);
1489                 stv0900_write_reg(intp, R0900_P2_TNRADJ, 0x1f);
1490                 stv0900_write_reg(intp, R0900_P2_TNRCTL2, 0x0);
1491                 stv0900_write_bits(intp, F0900_P2_TUN_TYPE, 3);
1492                 break;
1493         /* case FE_SW_TUNER: */
1494         default:
1495                 stv0900_write_bits(intp, F0900_P2_TUN_TYPE, 6);
1496                 break;
1497         }
1498
1499         stv0900_write_bits(intp, F0900_P2_TUN_MADDRESS, p_init->tun2_maddress);
1500         switch (p_init->tuner2_adc) {
1501         case 1:
1502                 stv0900_write_reg(intp, R0900_TSTTNR3, 0x26);
1503                 break;
1504         default:
1505                 break;
1506         }
1507
1508         stv0900_write_reg(intp, R0900_P2_TNRLD, 1); /* hw tuner */
1509
1510         stv0900_write_bits(intp, F0900_P1_TUN_IQSWAP, p_init->tun1_iq_inv);
1511         stv0900_write_bits(intp, F0900_P2_TUN_IQSWAP, p_init->tun2_iq_inv);
1512         stv0900_set_mclk(intp, 135000000);
1513         msleep(3);
1514
1515         switch (intp->clkmode) {
1516         case 0:
1517         case 2:
1518                 stv0900_write_reg(intp, R0900_SYNTCTRL, 0x20 | intp->clkmode);
1519                 break;
1520         default:
1521                 selosci = 0x02 & stv0900_read_reg(intp, R0900_SYNTCTRL);
1522                 stv0900_write_reg(intp, R0900_SYNTCTRL, 0x20 | selosci);
1523                 break;
1524         }
1525         msleep(3);
1526
1527         intp->mclk = stv0900_get_mclk_freq(intp, intp->quartz);
1528         if (intp->errs)
1529                 error = STV0900_I2C_ERROR;
1530
1531         return error;
1532 }
1533
1534 static int stv0900_status(struct stv0900_internal *intp,
1535                                         enum fe_stv0900_demod_num demod)
1536 {
1537         enum fe_stv0900_search_state demod_state;
1538         int locked = FALSE;
1539         u8 tsbitrate0_val, tsbitrate1_val;
1540         s32 bitrate;
1541
1542         demod_state = stv0900_get_bits(intp, HEADER_MODE);
1543         switch (demod_state) {
1544         case STV0900_SEARCH:
1545         case STV0900_PLH_DETECTED:
1546         default:
1547                 locked = FALSE;
1548                 break;
1549         case STV0900_DVBS2_FOUND:
1550                 locked = stv0900_get_bits(intp, LOCK_DEFINITIF) &&
1551                                 stv0900_get_bits(intp, PKTDELIN_LOCK) &&
1552                                 stv0900_get_bits(intp, TSFIFO_LINEOK);
1553                 break;
1554         case STV0900_DVBS_FOUND:
1555                 locked = stv0900_get_bits(intp, LOCK_DEFINITIF) &&
1556                                 stv0900_get_bits(intp, LOCKEDVIT) &&
1557                                 stv0900_get_bits(intp, TSFIFO_LINEOK);
1558                 break;
1559         }
1560
1561         dprintk("%s: locked = %d\n", __func__, locked);
1562
1563         if (stvdebug) {
1564                 /* Print TS bitrate */
1565                 tsbitrate0_val = stv0900_read_reg(intp, TSBITRATE0);
1566                 tsbitrate1_val = stv0900_read_reg(intp, TSBITRATE1);
1567                 /* Formula Bit rate = Mclk * px_tsfifo_bitrate / 16384 */
1568                 bitrate = (stv0900_get_mclk_freq(intp, intp->quartz)/1000000)
1569                         * (tsbitrate1_val << 8 | tsbitrate0_val);
1570                 bitrate /= 16384;
1571                 dprintk("TS bitrate = %d Mbit/sec \n", bitrate);
1572         };
1573
1574         return locked;
1575 }
1576
1577 static enum dvbfe_search stv0900_search(struct dvb_frontend *fe,
1578                                         struct dvb_frontend_parameters *params)
1579 {
1580         struct stv0900_state *state = fe->demodulator_priv;
1581         struct stv0900_internal *intp = state->internal;
1582         enum fe_stv0900_demod_num demod = state->demod;
1583         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1584
1585         struct stv0900_search_params p_search;
1586         struct stv0900_signal_info p_result = intp->result[demod];
1587
1588         enum fe_stv0900_error error = STV0900_NO_ERROR;
1589
1590         dprintk("%s: ", __func__);
1591
1592         if (!(INRANGE(100000, c->symbol_rate, 70000000)))
1593                 return DVBFE_ALGO_SEARCH_FAILED;
1594
1595         if (state->config->set_ts_params)
1596                 state->config->set_ts_params(fe, 0);
1597
1598         p_result.locked = FALSE;
1599         p_search.path = demod;
1600         p_search.frequency = c->frequency;
1601         p_search.symbol_rate = c->symbol_rate;
1602         p_search.search_range = 10000000;
1603         p_search.fec = STV0900_FEC_UNKNOWN;
1604         p_search.standard = STV0900_AUTO_SEARCH;
1605         p_search.iq_inversion = STV0900_IQ_AUTO;
1606         p_search.search_algo = STV0900_BLIND_SEARCH;
1607         /* Speeds up DVB-S searching */
1608         if (c->delivery_system == SYS_DVBS)
1609                 p_search.standard = STV0900_SEARCH_DVBS1;
1610
1611         intp->srch_standard[demod] = p_search.standard;
1612         intp->symbol_rate[demod] = p_search.symbol_rate;
1613         intp->srch_range[demod] = p_search.search_range;
1614         intp->freq[demod] = p_search.frequency;
1615         intp->srch_algo[demod] = p_search.search_algo;
1616         intp->srch_iq_inv[demod] = p_search.iq_inversion;
1617         intp->fec[demod] = p_search.fec;
1618         if ((stv0900_algo(fe) == STV0900_RANGEOK) &&
1619                                 (intp->errs == STV0900_NO_ERROR)) {
1620                 p_result.locked = intp->result[demod].locked;
1621                 p_result.standard = intp->result[demod].standard;
1622                 p_result.frequency = intp->result[demod].frequency;
1623                 p_result.symbol_rate = intp->result[demod].symbol_rate;
1624                 p_result.fec = intp->result[demod].fec;
1625                 p_result.modcode = intp->result[demod].modcode;
1626                 p_result.pilot = intp->result[demod].pilot;
1627                 p_result.frame_len = intp->result[demod].frame_len;
1628                 p_result.spectrum = intp->result[demod].spectrum;
1629                 p_result.rolloff = intp->result[demod].rolloff;
1630                 p_result.modulation = intp->result[demod].modulation;
1631         } else {
1632                 p_result.locked = FALSE;
1633                 switch (intp->err[demod]) {
1634                 case STV0900_I2C_ERROR:
1635                         error = STV0900_I2C_ERROR;
1636                         break;
1637                 case STV0900_NO_ERROR:
1638                 default:
1639                         error = STV0900_SEARCH_FAILED;
1640                         break;
1641                 }
1642         }
1643
1644         if ((p_result.locked == TRUE) && (error == STV0900_NO_ERROR)) {
1645                 dprintk("Search Success\n");
1646                 return DVBFE_ALGO_SEARCH_SUCCESS;
1647         } else {
1648                 dprintk("Search Fail\n");
1649                 return DVBFE_ALGO_SEARCH_FAILED;
1650         }
1651
1652 }
1653
1654 static int stv0900_read_status(struct dvb_frontend *fe, enum fe_status *status)
1655 {
1656         struct stv0900_state *state = fe->demodulator_priv;
1657
1658         dprintk("%s: ", __func__);
1659
1660         if ((stv0900_status(state->internal, state->demod)) == TRUE) {
1661                 dprintk("DEMOD LOCK OK\n");
1662                 *status = FE_HAS_CARRIER
1663                         | FE_HAS_VITERBI
1664                         | FE_HAS_SYNC
1665                         | FE_HAS_LOCK;
1666                 if (state->config->set_lock_led)
1667                         state->config->set_lock_led(fe, 1);
1668         } else {
1669                 *status = 0;
1670                 if (state->config->set_lock_led)
1671                         state->config->set_lock_led(fe, 0);
1672                 dprintk("DEMOD LOCK FAIL\n");
1673         }
1674
1675         return 0;
1676 }
1677
1678 static int stv0900_track(struct dvb_frontend *fe,
1679                         struct dvb_frontend_parameters *p)
1680 {
1681         return 0;
1682 }
1683
1684 static int stv0900_stop_ts(struct dvb_frontend *fe, int stop_ts)
1685 {
1686
1687         struct stv0900_state *state = fe->demodulator_priv;
1688         struct stv0900_internal *intp = state->internal;
1689         enum fe_stv0900_demod_num demod = state->demod;
1690
1691         if (stop_ts == TRUE)
1692                 stv0900_write_bits(intp, RST_HWARE, 1);
1693         else
1694                 stv0900_write_bits(intp, RST_HWARE, 0);
1695
1696         return 0;
1697 }
1698
1699 static int stv0900_diseqc_init(struct dvb_frontend *fe)
1700 {
1701         struct stv0900_state *state = fe->demodulator_priv;
1702         struct stv0900_internal *intp = state->internal;
1703         enum fe_stv0900_demod_num demod = state->demod;
1704
1705         stv0900_write_bits(intp, DISTX_MODE, state->config->diseqc_mode);
1706         stv0900_write_bits(intp, DISEQC_RESET, 1);
1707         stv0900_write_bits(intp, DISEQC_RESET, 0);
1708
1709         return 0;
1710 }
1711
1712 static int stv0900_init(struct dvb_frontend *fe)
1713 {
1714         dprintk("%s\n", __func__);
1715
1716         stv0900_stop_ts(fe, 1);
1717         stv0900_diseqc_init(fe);
1718
1719         return 0;
1720 }
1721
1722 static int stv0900_diseqc_send(struct stv0900_internal *intp , u8 *data,
1723                                 u32 NbData, enum fe_stv0900_demod_num demod)
1724 {
1725         s32 i = 0;
1726
1727         stv0900_write_bits(intp, DIS_PRECHARGE, 1);
1728         while (i < NbData) {
1729                 while (stv0900_get_bits(intp, FIFO_FULL))
1730                         ;/* checkpatch complains */
1731                 stv0900_write_reg(intp, DISTXDATA, data[i]);
1732                 i++;
1733         }
1734
1735         stv0900_write_bits(intp, DIS_PRECHARGE, 0);
1736         i = 0;
1737         while ((stv0900_get_bits(intp, TX_IDLE) != 1) && (i < 10)) {
1738                 msleep(10);
1739                 i++;
1740         }
1741
1742         return 0;
1743 }
1744
1745 static int stv0900_send_master_cmd(struct dvb_frontend *fe,
1746                                         struct dvb_diseqc_master_cmd *cmd)
1747 {
1748         struct stv0900_state *state = fe->demodulator_priv;
1749
1750         return stv0900_diseqc_send(state->internal,
1751                                 cmd->msg,
1752                                 cmd->msg_len,
1753                                 state->demod);
1754 }
1755
1756 static int stv0900_send_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst)
1757 {
1758         struct stv0900_state *state = fe->demodulator_priv;
1759         struct stv0900_internal *intp = state->internal;
1760         enum fe_stv0900_demod_num demod = state->demod;
1761         u8 data;
1762
1763
1764         switch (burst) {
1765         case SEC_MINI_A:
1766                 stv0900_write_bits(intp, DISTX_MODE, 3);/* Unmodulated */
1767                 data = 0x00;
1768                 stv0900_diseqc_send(intp, &data, 1, state->demod);
1769                 break;
1770         case SEC_MINI_B:
1771                 stv0900_write_bits(intp, DISTX_MODE, 2);/* Modulated */
1772                 data = 0xff;
1773                 stv0900_diseqc_send(intp, &data, 1, state->demod);
1774                 break;
1775         }
1776
1777         return 0;
1778 }
1779
1780 static int stv0900_recv_slave_reply(struct dvb_frontend *fe,
1781                                 struct dvb_diseqc_slave_reply *reply)
1782 {
1783         struct stv0900_state *state = fe->demodulator_priv;
1784         struct stv0900_internal *intp = state->internal;
1785         enum fe_stv0900_demod_num demod = state->demod;
1786         s32 i = 0;
1787
1788         reply->msg_len = 0;
1789
1790         while ((stv0900_get_bits(intp, RX_END) != 1) && (i < 10)) {
1791                 msleep(10);
1792                 i++;
1793         }
1794
1795         if (stv0900_get_bits(intp, RX_END)) {
1796                 reply->msg_len = stv0900_get_bits(intp, FIFO_BYTENBR);
1797
1798                 for (i = 0; i < reply->msg_len; i++)
1799                         reply->msg[i] = stv0900_read_reg(intp, DISRXDATA);
1800         }
1801
1802         return 0;
1803 }
1804
1805 static int stv0900_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t toneoff)
1806 {
1807         struct stv0900_state *state = fe->demodulator_priv;
1808         struct stv0900_internal *intp = state->internal;
1809         enum fe_stv0900_demod_num demod = state->demod;
1810
1811         dprintk("%s: %s\n", __func__, ((toneoff == 0) ? "On" : "Off"));
1812
1813         switch (toneoff) {
1814         case SEC_TONE_ON:
1815                 /*Set the DiseqC mode to 22Khz _continues_ tone*/
1816                 stv0900_write_bits(intp, DISTX_MODE, 0);
1817                 stv0900_write_bits(intp, DISEQC_RESET, 1);
1818                 /*release DiseqC reset to enable the 22KHz tone*/
1819                 stv0900_write_bits(intp, DISEQC_RESET, 0);
1820                 break;
1821         case SEC_TONE_OFF:
1822                 /*return diseqc mode to config->diseqc_mode.
1823                 Usually it's without _continues_ tone */
1824                 stv0900_write_bits(intp, DISTX_MODE,
1825                                 state->config->diseqc_mode);
1826                 /*maintain the DiseqC reset to disable the 22KHz tone*/
1827                 stv0900_write_bits(intp, DISEQC_RESET, 1);
1828                 stv0900_write_bits(intp, DISEQC_RESET, 0);
1829                 break;
1830         default:
1831                 return -EINVAL;
1832         }
1833
1834         return 0;
1835 }
1836
1837 static void stv0900_release(struct dvb_frontend *fe)
1838 {
1839         struct stv0900_state *state = fe->demodulator_priv;
1840
1841         dprintk("%s\n", __func__);
1842
1843         if (state->config->set_lock_led)
1844                 state->config->set_lock_led(fe, 0);
1845
1846         if ((--(state->internal->dmds_used)) <= 0) {
1847
1848                 dprintk("%s: Actually removing\n", __func__);
1849
1850                 remove_inode(state->internal);
1851                 kfree(state->internal);
1852         }
1853
1854         kfree(state);
1855 }
1856
1857 static int stv0900_sleep(struct dvb_frontend *fe)
1858 {
1859         struct stv0900_state *state = fe->demodulator_priv;
1860
1861         dprintk("%s\n", __func__);
1862
1863         if (state->config->set_lock_led)
1864                 state->config->set_lock_led(fe, 0);
1865
1866         return 0;
1867 }
1868
1869 static int stv0900_get_frontend(struct dvb_frontend *fe,
1870                                 struct dvb_frontend_parameters *p)
1871 {
1872         struct stv0900_state *state = fe->demodulator_priv;
1873         struct stv0900_internal *intp = state->internal;
1874         enum fe_stv0900_demod_num demod = state->demod;
1875         struct stv0900_signal_info p_result = intp->result[demod];
1876
1877         p->frequency = p_result.locked ? p_result.frequency : 0;
1878         p->u.qpsk.symbol_rate = p_result.locked ? p_result.symbol_rate : 0;
1879         return 0;
1880 }
1881
1882 static struct dvb_frontend_ops stv0900_ops = {
1883
1884         .info = {
1885                 .name                   = "STV0900 frontend",
1886                 .type                   = FE_QPSK,
1887                 .frequency_min          = 950000,
1888                 .frequency_max          = 2150000,
1889                 .frequency_stepsize     = 125,
1890                 .frequency_tolerance    = 0,
1891                 .symbol_rate_min        = 1000000,
1892                 .symbol_rate_max        = 45000000,
1893                 .symbol_rate_tolerance  = 500,
1894                 .caps                   = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
1895                                           FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 |
1896                                           FE_CAN_FEC_7_8 | FE_CAN_QPSK    |
1897                                           FE_CAN_2G_MODULATION |
1898                                           FE_CAN_FEC_AUTO
1899         },
1900         .release                        = stv0900_release,
1901         .init                           = stv0900_init,
1902         .get_frontend                   = stv0900_get_frontend,
1903         .sleep                          = stv0900_sleep,
1904         .get_frontend_algo              = stv0900_frontend_algo,
1905         .i2c_gate_ctrl                  = stv0900_i2c_gate_ctrl,
1906         .diseqc_send_master_cmd         = stv0900_send_master_cmd,
1907         .diseqc_send_burst              = stv0900_send_burst,
1908         .diseqc_recv_slave_reply        = stv0900_recv_slave_reply,
1909         .set_tone                       = stv0900_set_tone,
1910         .set_property                   = stb0900_set_property,
1911         .get_property                   = stb0900_get_property,
1912         .search                         = stv0900_search,
1913         .track                          = stv0900_track,
1914         .read_status                    = stv0900_read_status,
1915         .read_ber                       = stv0900_read_ber,
1916         .read_signal_strength           = stv0900_read_signal_strength,
1917         .read_snr                       = stv0900_read_snr,
1918         .read_ucblocks                  = stv0900_read_ucblocks,
1919 };
1920
1921 struct dvb_frontend *stv0900_attach(const struct stv0900_config *config,
1922                                         struct i2c_adapter *i2c,
1923                                         int demod)
1924 {
1925         struct stv0900_state *state = NULL;
1926         struct stv0900_init_params init_params;
1927         enum fe_stv0900_error err_stv0900;
1928
1929         state = kzalloc(sizeof(struct stv0900_state), GFP_KERNEL);
1930         if (state == NULL)
1931                 goto error;
1932
1933         state->demod            = demod;
1934         state->config           = config;
1935         state->i2c_adap         = i2c;
1936
1937         memcpy(&state->frontend.ops, &stv0900_ops,
1938                         sizeof(struct dvb_frontend_ops));
1939         state->frontend.demodulator_priv = state;
1940
1941         switch (demod) {
1942         case 0:
1943         case 1:
1944                 init_params.dmd_ref_clk         = config->xtal;
1945                 init_params.demod_mode          = config->demod_mode;
1946                 init_params.rolloff             = STV0900_35;
1947                 init_params.path1_ts_clock      = config->path1_mode;
1948                 init_params.tun1_maddress       = config->tun1_maddress;
1949                 init_params.tun1_iq_inv         = STV0900_IQ_NORMAL;
1950                 init_params.tuner1_adc          = config->tun1_adc;
1951                 init_params.tuner1_type         = config->tun1_type;
1952                 init_params.path2_ts_clock      = config->path2_mode;
1953                 init_params.ts_config           = config->ts_config_regs;
1954                 init_params.tun2_maddress       = config->tun2_maddress;
1955                 init_params.tuner2_adc          = config->tun2_adc;
1956                 init_params.tuner2_type         = config->tun2_type;
1957                 init_params.tun2_iq_inv         = STV0900_IQ_SWAPPED;
1958
1959                 err_stv0900 = stv0900_init_internal(&state->frontend,
1960                                                         &init_params);
1961
1962                 if (err_stv0900)
1963                         goto error;
1964
1965                 break;
1966         default:
1967                 goto error;
1968                 break;
1969         }
1970
1971         dprintk("%s: Attaching STV0900 demodulator(%d) \n", __func__, demod);
1972         return &state->frontend;
1973
1974 error:
1975         dprintk("%s: Failed to attach STV0900 demodulator(%d) \n",
1976                 __func__, demod);
1977         kfree(state);
1978         return NULL;
1979 }
1980 EXPORT_SYMBOL(stv0900_attach);
1981
1982 MODULE_PARM_DESC(debug, "Set debug");
1983
1984 MODULE_AUTHOR("Igor M. Liplianin");
1985 MODULE_DESCRIPTION("ST STV0900 frontend");
1986 MODULE_LICENSE("GPL");