SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/dvb/frontends/stb0899_drv.c

   1 /*
   2         STB0899 Multistandard Frontend driver
   3         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   4
   5         Copyright (C) ST Microelectronics
   6
   7         This program is free software; you can redistribute it and/or modify
   8         it under the terms of the GNU General Public License as published by
   9         the Free Software Foundation; either version 2 of the License, or
  10         (at your option) any later version.
  11
  12         This program is distributed in the hope that it will be useful,
  13         but WITHOUT ANY WARRANTY; without even the implied warranty of
  14         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15         GNU General Public License for more details.
  16
  17         You should have received a copy of the GNU General Public License
  18         along with this program; if not, write to the Free Software
  19         Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include <linux/init.h>
  23 #include <linux/kernel.h>
  24 #include <linux/module.h>
  25 #include <linux/slab.h>
  26 #include <linux/string.h>
  27
  28 #include <linux/dvb/frontend.h>
  29 #include "dvb_frontend.h"
  30
  31 #include "stb0899_drv.h"
  32 #include "stb0899_priv.h"
  33 #include "stb0899_reg.h"
  34
  35 static unsigned int verbose = 0;//1;
  36 module_param(verbose, int, 0644);
  37
  38 /* C/N in dB/10, NIRM/NIRL */
  39 static const struct stb0899_tab stb0899_cn_tab[] = {
  40         { 200,  2600 },
  41         { 190,  2700 },
  42         { 180,  2860 },
  43         { 170,  3020 },
  44         { 160,  3210 },
  45         { 150,  3440 },
  46         { 140,  3710 },
  47         { 130,  4010 },
  48         { 120,  4360 },
  49         { 110,  4740 },
  50         { 100,  5190 },
  51         { 90,   5670 },
  52         { 80,   6200 },
  53         { 70,   6770 },
  54         { 60,   7360 },
  55         { 50,   7970 },
  56         { 40,   8250 },
  57         { 30,   9000 },
  58         { 20,   9450 },
  59         { 15,   9600 },
  60 };
  61
  62 /* DVB-S AGCIQ_VALUE vs. signal level in dBm/10.
  63  * As measured, connected to a modulator.
  64  * -8.0 to -50.0 dBm directly connected,
  65  * -52.0 to -74.8 with extra attenuation.
  66  * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm.
  67  * Crude linear extrapolation below -84.8dBm and above -8.0dBm.
  68  */
  69 static const struct stb0899_tab stb0899_dvbsrf_tab[] = {
  70         { -950, -128 },
  71         { -748,  -94 },
  72         { -745,  -92 },
  73         { -735,  -90 },
  74         { -720,  -87 },
  75         { -670,  -77 },
  76         { -640,  -70 },
  77         { -610,  -62 },
  78         { -600,  -60 },
  79         { -590,  -56 },
  80         { -560,  -41 },
  81         { -540,  -25 },
  82         { -530,  -17 },
  83         { -520,  -11 },
  84         { -500,    1 },
  85         { -490,    6 },
  86         { -480,   10 },
  87         { -440,   22 },
  88         { -420,   27 },
  89         { -400,   31 },
  90         { -380,   34 },
  91         { -340,   40 },
  92         { -320,   43 },
  93         { -280,   48 },
  94         { -250,   52 },
  95         { -230,   55 },
  96         { -180,   61 },
  97         { -140,   66 },
  98         {  -90,   73 },
  99         {  -80,   74 },
 100         {  500,  127 }
 101 };
 102
 103 /* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10.
 104  * As measured, connected to a modulator.
 105  * -8.0 to -50.1 dBm directly connected,
 106  * -53.0 to -76.6 with extra attenuation.
 107  * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm.
 108  * Crude linear extrapolation below -76.6dBm and above -8.0dBm.
 109  */
 110 static const struct stb0899_tab stb0899_dvbs2rf_tab[] = {
 111         {  700,     0 },
 112         {  -80,  3217 },
 113         { -150,  3893 },
 114         { -190,  4217 },
 115         { -240,  4621 },
 116         { -280,  4945 },
 117         { -320,  5273 },
 118         { -350,  5545 },
 119         { -370,  5741 },
 120         { -410,  6147 },
 121         { -450,  6671 },
 122         { -490,  7413 },
 123         { -501,  7665 },
 124         { -530,  8767 },
 125         { -560, 10219 },
 126         { -580, 10939 },
 127         { -590, 11518 },
 128         { -600, 11723 },
 129         { -650, 12659 },
 130         { -690, 13219 },
 131         { -730, 13645 },
 132         { -750, 13909 },
 133         { -766, 14153 },
 134         { -999, 16383 }
 135 };
 136
 137 /* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/
 138 static struct stb0899_tab stb0899_quant_tab[] = {
 139         {    0,     0 },
 140         {    0,   100 },
 141         {  600,   200 },
 142         {  950,   299 },
 143         { 1200,   398 },
 144         { 1400,   501 },
 145         { 1560,   603 },
 146         { 1690,   700 },
 147         { 1810,   804 },
 148         { 1910,   902 },
 149         { 2000,  1000 },
 150         { 2080,  1096 },
 151         { 2160,  1202 },
 152         { 2230,  1303 },
 153         { 2350,  1496 },
 154         { 2410,  1603 },
 155         { 2460,  1698 },
 156         { 2510,  1799 },
 157         { 2600,  1995 },
 158         { 2650,  2113 },
 159         { 2690,  2213 },
 160         { 2720,  2291 },
 161         { 2760,  2399 },
 162         { 2800,  2512 },
 163         { 2860,  2692 },
 164         { 2930,  2917 },
 165         { 2960,  3020 },
 166         { 3010,  3199 },
 167         { 3040,  3311 },
 168         { 3060,  3388 },
 169         { 3120,  3631 },
 170         { 3190,  3936 },
 171         { 3400,  5012 },
 172         { 3610,  6383 },
 173         { 3800,  7943 },
 174         { 4210, 12735 },
 175         { 4500, 17783 },
 176         { 4690, 22131 },
 177         { 4810, 25410 }
 178 };
 179
 180 /* DVB-S2 Es/N0 estimate in dB/100 vs read value */
 181 static struct stb0899_tab stb0899_est_tab[] = {
 182         {    0,      0 },
 183         {    0,      1 },
 184         {  301,      2 },
 185         { 1204,     16 },
 186         { 1806,     64 },
 187         { 2408,    256 },
 188         { 2709,    512 },
 189         { 3010,   1023 },
 190         { 3311,   2046 },
 191         { 3612,   4093 },
 192         { 3823,   6653 },
 193         { 3913,   8185 },
 194         { 4010,  10233 },
 195         { 4107,  12794 },
 196         { 4214,  16368 },
 197         { 4266,  18450 },
 198         { 4311,  20464 },
 199         { 4353,  22542 },
 200         { 4391,  24604 },
 201         { 4425,  26607 },
 202         { 4457,  28642 },
 203         { 4487,  30690 },
 204         { 4515,  32734 },
 205         { 4612,  40926 },
 206         { 4692,  49204 },
 207         { 4816,  65464 },
 208         { 4913,  81846 },
 209         { 4993,  98401 },
 210         { 5060, 114815 },
 211         { 5118, 131220 },
 212         { 5200, 158489 },
 213         { 5300, 199526 },
 214         { 5400, 251189 },
 215         { 5500, 316228 },
 216         { 5600, 398107 },
 217         { 5720, 524807 },
 218         { 5721, 526017 },
 219 };
 220
 221 static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
 222 {
 223         int ret;
 224
 225         u8 b0[] = { reg >> 8, reg & 0xff };
 226         u8 buf;
 227
 228         struct i2c_msg msg[] = {
 229                 {
 230                         .addr   = state->config->demod_address,
 231                         .flags  = 0,
 232                         .buf    = b0,
 233                         .len    = 2
 234                 },{
 235                         .addr   = state->config->demod_address,
 236                         .flags  = I2C_M_RD,
 237                         .buf    = &buf,
 238                         .len    = 1
 239                 }
 240         };
 241
 242         ret = i2c_transfer(state->i2c, msg, 2);
 243         if (ret != 2) {
 244                 if (ret != -ERESTARTSYS)
 245                         dprintk(state->verbose, FE_ERROR, 1,
 246                                 "Read error, Reg=[0x%02x], Status=%d",
 247                                 reg, ret);
 248
 249                 return ret < 0 ? ret : -EREMOTEIO;
 250         }
 251         if (unlikely(*state->verbose >= FE_DEBUGREG))
 252                 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x",
 253                         reg, buf);
 254
 255         return (unsigned int)buf;
 256 }
 257
 258 int stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
 259 {
 260         int result;
 261
 262         result = _stb0899_read_reg(state, reg);
 263         /*
 264          * Bug ID 9:
 265          * access to 0xf2xx/0xf6xx
 266          * must be followed by read from 0xf2ff/0xf6ff.
 267          */
 268         if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
 269             (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
 270                 _stb0899_read_reg(state, (reg | 0x00ff));
 271
 272         return result;
 273 }
 274
 275 u32 _stb0899_read_s2reg(struct stb0899_state *state,
 276                         u32 stb0899_i2cdev,
 277                         u32 stb0899_base_addr,
 278                         u16 stb0899_reg_offset)
 279 {
 280         int status;
 281         u32 data;
 282         u8 buf[7] = { 0 };
 283         u16 tmpaddr;
 284
 285         u8 buf_0[] = {
 286                 GETBYTE(stb0899_i2cdev, BYTE1),         /* 0xf3 S2 Base Address (MSB)   */
 287                 GETBYTE(stb0899_i2cdev, BYTE0),         /* 0xfc S2 Base Address (LSB)   */
 288                 GETBYTE(stb0899_base_addr, BYTE0),      /* 0x00 Base Address (LSB)      */
 289                 GETBYTE(stb0899_base_addr, BYTE1),      /* 0x04 Base Address (LSB)      */
 290                 GETBYTE(stb0899_base_addr, BYTE2),      /* 0x00 Base Address (MSB)      */
 291                 GETBYTE(stb0899_base_addr, BYTE3),      /* 0x00 Base Address (MSB)      */
 292         };
 293         u8 buf_1[] = {
 294                 0x00,   /* 0xf3 Reg Offset      */
 295                 0x00,   /* 0x44 Reg Offset      */
 296         };
 297
 298         struct i2c_msg msg_0 = {
 299                 .addr   = state->config->demod_address,
 300                 .flags  = 0,
 301                 .buf    = buf_0,
 302                 .len    = 6
 303         };
 304
 305         struct i2c_msg msg_1 = {
 306                 .addr   = state->config->demod_address,
 307                 .flags  = 0,
 308                 .buf    = buf_1,
 309                 .len    = 2
 310         };
 311
 312         struct i2c_msg msg_r = {
 313                 .addr   = state->config->demod_address,
 314                 .flags  = I2C_M_RD,
 315                 .buf    = buf,
 316                 .len    = 4
 317         };
 318
 319         tmpaddr = stb0899_reg_offset & 0xff00;
 320         if (!(stb0899_reg_offset & 0x8))
 321                 tmpaddr = stb0899_reg_offset | 0x20;
 322
 323         buf_1[0] = GETBYTE(tmpaddr, BYTE1);
 324         buf_1[1] = GETBYTE(tmpaddr, BYTE0);
 325
 326         status = i2c_transfer(state->i2c, &msg_0, 1);
 327         if (status < 1) {
 328                 if (status != -ERESTARTSYS)
 329                         printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
 330                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
 331
 332                 goto err;
 333         }
 334
 335         /* Dummy        */
 336         status = i2c_transfer(state->i2c, &msg_1, 1);
 337         if (status < 1)
 338                 goto err;
 339
 340         status = i2c_transfer(state->i2c, &msg_r, 1);
 341         if (status < 1)
 342                 goto err;
 343
 344         buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
 345         buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
 346
 347         /* Actual       */
 348         status = i2c_transfer(state->i2c, &msg_1, 1);
 349         if (status < 1) {
 350                 if (status != -ERESTARTSYS)
 351                         printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
 352                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
 353                 goto err;
 354         }
 355
 356         status = i2c_transfer(state->i2c, &msg_r, 1);
 357         if (status < 1) {
 358                 if (status != -ERESTARTSYS)
 359                         printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
 360                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
 361                 return status < 0 ? status : -EREMOTEIO;
 362         }
 363
 364         data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]);
 365         if (unlikely(*state->verbose >= FE_DEBUGREG))
 366                 printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
 367                        __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data);
 368
 369         return data;
 370
 371 err:
 372         return status < 0 ? status : -EREMOTEIO;
 373 }
 374
 375 int stb0899_write_s2reg(struct stb0899_state *state,
 376                         u32 stb0899_i2cdev,
 377                         u32 stb0899_base_addr,
 378                         u16 stb0899_reg_offset,
 379                         u32 stb0899_data)
 380 {
 381         int status;
 382
 383         /* Base Address Setup   */
 384         u8 buf_0[] = {
 385                 GETBYTE(stb0899_i2cdev, BYTE1),         /* 0xf3 S2 Base Address (MSB)   */
 386                 GETBYTE(stb0899_i2cdev, BYTE0),         /* 0xfc S2 Base Address (LSB)   */
 387                 GETBYTE(stb0899_base_addr, BYTE0),      /* 0x00 Base Address (LSB)      */
 388                 GETBYTE(stb0899_base_addr, BYTE1),      /* 0x04 Base Address (LSB)      */
 389                 GETBYTE(stb0899_base_addr, BYTE2),      /* 0x00 Base Address (MSB)      */
 390                 GETBYTE(stb0899_base_addr, BYTE3),      /* 0x00 Base Address (MSB)      */
 391         };
 392         u8 buf_1[] = {
 393                 0x00,   /* 0xf3 Reg Offset      */
 394                 0x00,   /* 0x44 Reg Offset      */
 395                 0x00,   /* data                 */
 396                 0x00,   /* data                 */
 397                 0x00,   /* data                 */
 398                 0x00,   /* data                 */
 399         };
 400
 401         struct i2c_msg msg_0 = {
 402                 .addr   = state->config->demod_address,
 403                 .flags  = 0,
 404                 .buf    = buf_0,
 405                 .len    = 6
 406         };
 407
 408         struct i2c_msg msg_1 = {
 409                 .addr   = state->config->demod_address,
 410                 .flags  = 0,
 411                 .buf    = buf_1,
 412                 .len    = 6
 413         };
 414
 415         buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
 416         buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
 417         buf_1[2] = GETBYTE(stb0899_data, BYTE0);
 418         buf_1[3] = GETBYTE(stb0899_data, BYTE1);
 419         buf_1[4] = GETBYTE(stb0899_data, BYTE2);
 420         buf_1[5] = GETBYTE(stb0899_data, BYTE3);
 421
 422         if (unlikely(*state->verbose >= FE_DEBUGREG))
 423                 printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
 424                        __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data);
 425
 426         status = i2c_transfer(state->i2c, &msg_0, 1);
 427         if (unlikely(status < 1)) {
 428                 if (status != -ERESTARTSYS)
 429                         printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
 430                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
 431                 goto err;
 432         }
 433         status = i2c_transfer(state->i2c, &msg_1, 1);
 434         if (unlikely(status < 1)) {
 435                 if (status != -ERESTARTSYS)
 436                         printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
 437                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
 438
 439                 return status < 0 ? status : -EREMOTEIO;
 440         }
 441
 442         return 0;
 443
 444 err:
 445         return status < 0 ? status : -EREMOTEIO;
 446 }
 447
 448 int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count)
 449 {
 450         int status;
 451
 452         u8 b0[] = { reg >> 8, reg & 0xff };
 453
 454         struct i2c_msg msg[] = {
 455                 {
 456                         .addr   = state->config->demod_address,
 457                         .flags  = 0,
 458                         .buf    = b0,
 459                         .len    = 2
 460                 },{
 461                         .addr   = state->config->demod_address,
 462                         .flags  = I2C_M_RD,
 463                         .buf    = buf,
 464                         .len    = count
 465                 }
 466         };
 467
 468         status = i2c_transfer(state->i2c, msg, 2);
 469         if (status != 2) {
 470                 if (status != -ERESTARTSYS)
 471                         printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n",
 472                                __func__, reg, count, status);
 473                 goto err;
 474         }
 475         /*
 476          * Bug ID 9:
 477          * access to 0xf2xx/0xf6xx
 478          * must be followed by read from 0xf2ff/0xf6ff.
 479          */
 480         if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
 481             (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
 482                 _stb0899_read_reg(state, (reg | 0x00ff));
 483
 484         if (unlikely(*state->verbose >= FE_DEBUGREG)) {
 485                 int i;
 486
 487                 printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg);
 488                 for (i = 0; i < count; i++) {
 489                         printk(" %02x", buf[i]);
 490                 }
 491                 printk("\n");
 492         }
 493
 494         return 0;
 495 err:
 496         return status < 0 ? status : -EREMOTEIO;
 497 }
 498
 499 int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count)
 500 {
 501         int ret;
 502         u8 buf[2 + count];
 503         struct i2c_msg i2c_msg = {
 504                 .addr   = state->config->demod_address,
 505                 .flags  = 0,
 506                 .buf    = buf,
 507                 .len    = 2 + count
 508         };
 509
 510         buf[0] = reg >> 8;
 511         buf[1] = reg & 0xff;
 512         memcpy(&buf[2], data, count);
 513
 514         if (unlikely(*state->verbose >= FE_DEBUGREG)) {
 515                 int i;
 516
 517                 printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg);
 518                 for (i = 0; i < count; i++)
 519                         printk(" %02x", data[i]);
 520                 printk("\n");
 521         }
 522         ret = i2c_transfer(state->i2c, &i2c_msg, 1);
 523
 524         /*
 525          * Bug ID 9:
 526          * access to 0xf2xx/0xf6xx
 527          * must be followed by read from 0xf2ff/0xf6ff.
 528          */
 529         if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
 530                 stb0899_read_reg(state, (reg | 0x00ff));
 531
 532         if (ret != 1) {
 533                 if (ret != -ERESTARTSYS)
 534                         dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d",
 535                                 reg, data[0], count, ret);
 536                 return ret < 0 ? ret : -EREMOTEIO;
 537         }
 538
 539         return 0;
 540 }
 541
 542 int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data)
 543 {
 544         return stb0899_write_regs(state, reg, &data, 1);
 545 }
 546
 547 /*
 548  * stb0899_get_mclk
 549  * Get STB0899 master clock frequency
 550  * ExtClk: external clock frequency (Hz)
 551  */
 552 static u32 stb0899_get_mclk(struct stb0899_state *state)
 553 {
 554         u32 mclk = 0, div = 0;
 555
 556         div = stb0899_read_reg(state, STB0899_NCOARSE);
 557         mclk = (div + 1) * state->config->xtal_freq / 6;
 558         dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk);
 559
 560         return mclk;
 561 }
 562
 563 /*
 564  * stb0899_set_mclk
 565  * Set STB0899 master Clock frequency
 566  * Mclk: demodulator master clock
 567  * ExtClk: external clock frequency (Hz)
 568  */
 569 static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk)
 570 {
 571         struct stb0899_internal *internal = &state->internal;
 572         u8 mdiv = 0;
 573
 574         dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config);
 575         mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1;
 576         dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv);
 577
 578         stb0899_write_reg(state, STB0899_NCOARSE, mdiv);
 579         internal->master_clk = stb0899_get_mclk(state);
 580
 581         dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk);
 582 }
 583
 584 static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable)
 585 {
 586         struct stb0899_config *config           = state->config;
 587         const struct stb0899_postproc *postproc = config->postproc;
 588
 589         /* post process event */
 590         if (postproc) {
 591                 if (enable) {
 592                         if (postproc[ctl].level == STB0899_GPIOPULLUP)
 593                                 stb0899_write_reg(state, postproc[ctl].gpio, 0x02);
 594                         else
 595                                 stb0899_write_reg(state, postproc[ctl].gpio, 0x82);
 596                 } else {
 597                         if (postproc[ctl].level == STB0899_GPIOPULLUP)
 598                                 stb0899_write_reg(state, postproc[ctl].gpio, 0x82);
 599                         else
 600                                 stb0899_write_reg(state, postproc[ctl].gpio, 0x02);
 601                 }
 602         }
 603         return 0;
 604 }
 605
 606 static void stb0899_release(struct dvb_frontend *fe)
 607 {
 608         struct stb0899_state *state = fe->demodulator_priv;
 609
 610         dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend");
 611         /* post process event */
 612         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
 613         kfree(state);
 614 }
 615
 616 /*
 617  * stb0899_get_alpha
 618  * return: rolloff
 619  */
 620 static int stb0899_get_alpha(struct stb0899_state *state)
 621 {
 622         u8 mode_coeff;
 623
 624         mode_coeff = stb0899_read_reg(state, STB0899_DEMOD);
 625
 626         if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1)
 627                 return 20;
 628         else
 629                 return 35;
 630 }
 631
 632 /*
 633  * stb0899_init_calc
 634  */
 635 static void stb0899_init_calc(struct stb0899_state *state)
 636 {
 637         struct stb0899_internal *internal = &state->internal;
 638         int master_clk;
 639         u8 agc[2];
 640         u8 agc1cn;
 641         u32 reg;
 642
 643         /* Read registers (in burst mode)       */
 644         agc1cn = stb0899_read_reg(state, STB0899_AGC1CN);
 645         stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O   */
 646
 647         /* Initial calculations */
 648         master_clk                      = stb0899_get_mclk(state);
 649         internal->t_agc1                = 0;
 650         internal->t_agc2                = 0;
 651         internal->master_clk            = master_clk;
 652         internal->mclk                  = master_clk / 65536L;
 653         internal->rolloff               = stb0899_get_alpha(state);
 654
 655         /* DVBS2 Initial calculations   */
 656         /* Set AGC value to the middle  */
 657         internal->agc_gain              = 8154;
 658         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL);
 659         STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain);
 660         stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg);
 661
 662         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA);
 663         internal->rrc_alpha             = STB0899_GETFIELD(RRC_ALPHA, reg);
 664
 665         internal->center_freq           = 0;
 666         internal->av_frame_coarse       = 10;
 667         internal->av_frame_fine         = 20;
 668         internal->step_size             = 2;
 669 /*
 670         if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO))
 671                 pParams->IQLocked = 0;
 672         else
 673                 pParams->IQLocked = 1;
 674 */
 675 }
 676
 677 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout)
 678 {
 679         u8 reg = 0;
 680         unsigned long start = jiffies;
 681
 682         while (1) {
 683                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
 684                 if (!STB0899_GETFIELD(FIFOFULL, reg))
 685                         break;
 686                 if ((jiffies - start) > timeout) {
 687                         dprintk(state->verbose, FE_ERROR, 1, "timed out !!");
 688                         return -ETIMEDOUT;
 689                 }
 690         }
 691
 692         return 0;
 693 }
 694
 695 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
 696 {
 697         struct stb0899_state *state = fe->demodulator_priv;
 698         u8 reg, i;
 699
 700         if (cmd->msg_len > 8)
 701                 return -EINVAL;
 702
 703         /* enable FIFO precharge        */
 704         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 705         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1);
 706         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 707         for (i = 0; i < cmd->msg_len; i++) {
 708                 /* wait for FIFO empty  */
 709                 if (stb0899_wait_diseqc_fifo_empty(state, 10) < 0)
 710                         return -ETIMEDOUT;
 711
 712                 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]);
 713         }
 714         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 715         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);
 716         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 717
 718         return 0;
 719 }
 720
 721 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout)
 722 {
 723         u8 reg = 0;
 724         unsigned long start = jiffies;
 725
 726         while (!STB0899_GETFIELD(RXEND, reg)) {
 727                 reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
 728                 if (jiffies - start > timeout) {
 729                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
 730                         return -ETIMEDOUT;
 731                 }
 732                 msleep(10);
 733         }
 734
 735         return 0;
 736 }
 737
 738 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)
 739 {
 740         struct stb0899_state *state = fe->demodulator_priv;
 741         u8 reg, length = 0, i;
 742         int result;
 743
 744         if (stb0899_wait_diseqc_rxidle(state, 100) < 0)
 745                 return -ETIMEDOUT;
 746
 747         reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
 748         if (STB0899_GETFIELD(RXEND, reg)) {
 749
 750                 reg = stb0899_read_reg(state, STB0899_DISRX_ST1);
 751                 length = STB0899_GETFIELD(FIFOBYTENBR, reg);
 752
 753                 if (length > sizeof (reply->msg)) {
 754                         result = -EOVERFLOW;
 755                         goto exit;
 756                 }
 757                 reply->msg_len = length;
 758
 759                 /* extract data */
 760                 for (i = 0; i < length; i++)
 761                         reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO);
 762         }
 763
 764         return 0;
 765 exit:
 766
 767         return result;
 768 }
 769
 770 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout)
 771 {
 772         u8 reg = 0;
 773         unsigned long start = jiffies;
 774
 775         while (!STB0899_GETFIELD(TXIDLE, reg)) {
 776                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
 777                 if (jiffies - start > timeout) {
 778                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
 779                         return -ETIMEDOUT;
 780                 }
 781                 msleep(10);
 782         }
 783         return 0;
 784 }
 785
 786 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst)
 787 {
 788         struct stb0899_state *state = fe->demodulator_priv;
 789         u8 reg, old_state;
 790
 791         /* wait for diseqc idle */
 792         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
 793                 return -ETIMEDOUT;
 794
 795         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 796         old_state = reg;
 797         /* set to burst mode    */
 798         STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03);
 799         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01);
 800         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 801         switch (burst) {
 802         case SEC_MINI_A:
 803                 /* unmodulated  */
 804                 stb0899_write_reg(state, STB0899_DISFIFO, 0x00);
 805                 break;
 806         case SEC_MINI_B:
 807                 /* modulated    */
 808                 stb0899_write_reg(state, STB0899_DISFIFO, 0xff);
 809                 break;
 810         }
 811         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 812         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00);
 813         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 814         /* wait for diseqc idle */
 815         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
 816                 return -ETIMEDOUT;
 817
 818         /* restore state        */
 819         stb0899_write_reg(state, STB0899_DISCNTRL1, old_state);
 820
 821         return 0;
 822 }
 823
 824 static int stb0899_diseqc_init(struct stb0899_state *state)
 825 {
 826         struct dvb_diseqc_master_cmd tx_data;
 827 /*
 828         struct dvb_diseqc_slave_reply rx_data;
 829 */
 830         u8 f22_tx, f22_rx, reg;
 831
 832         u32 mclk, tx_freq = 22000;/* count = 0, i; */
 833         tx_data.msg[0] = 0xe2;
 834         tx_data.msg_len = 3;
 835         reg = stb0899_read_reg(state, STB0899_DISCNTRL2);
 836         STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0);
 837         stb0899_write_reg(state, STB0899_DISCNTRL2, reg);
 838
 839         /* disable Tx spy       */
 840         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 841         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1);
 842         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 843
 844         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 845         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0);
 846         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 847
 848         mclk = stb0899_get_mclk(state);
 849         f22_tx = mclk / (tx_freq * 32);
 850         stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq     */
 851         state->rx_freq = 20000;
 852         f22_rx = mclk / (state->rx_freq * 32);
 853
 854         return 0;
 855 }
 856
 857 static int stb0899_sleep(struct dvb_frontend *fe)
 858 {
 859         struct stb0899_state *state = fe->demodulator_priv;
 860 /*
 861         u8 reg;
 862 */
 863         dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))");
 864         /* post process event */
 865         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
 866
 867         return 0;
 868 }
 869
 870 static int stb0899_wakeup(struct dvb_frontend *fe)
 871 {
 872         int rc;
 873         struct stb0899_state *state = fe->demodulator_priv;
 874
 875         if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI)))
 876                 return rc;
 877         /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */
 878         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00)))
 879                 return rc;
 880         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00)))
 881                 return rc;
 882
 883         /* post process event */
 884         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1);
 885
 886         return 0;
 887 }
 888
 889 static int stb0899_init(struct dvb_frontend *fe)
 890 {
 891         int i;
 892         struct stb0899_state *state = fe->demodulator_priv;
 893         struct stb0899_config *config = state->config;
 894
 895         dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... ");
 896
 897         /* init device          */
 898         dprintk(state->verbose, FE_DEBUG, 1, "init device");
 899         for (i = 0; config->init_dev[i].address != 0xffff; i++)
 900                 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data);
 901
 902         dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod");
 903         /* init S2 demod        */
 904         for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++)
 905                 stb0899_write_s2reg(state, STB0899_S2DEMOD,
 906                                     config->init_s2_demod[i].base_address,
 907                                     config->init_s2_demod[i].offset,
 908                                     config->init_s2_demod[i].data);
 909
 910         dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod");
 911         /* init S1 demod        */
 912         for (i = 0; config->init_s1_demod[i].address != 0xffff; i++)
 913                 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data);
 914
 915         dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC");
 916         /* init S2 fec          */
 917         for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++)
 918                 stb0899_write_s2reg(state, STB0899_S2FEC,
 919                                     config->init_s2_fec[i].base_address,
 920                                     config->init_s2_fec[i].offset,
 921                                     config->init_s2_fec[i].data);
 922
 923         dprintk(state->verbose, FE_DEBUG, 1, "init TST");
 924         /* init test            */
 925         for (i = 0; config->init_tst[i].address != 0xffff; i++)
 926                 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data);
 927
 928         stb0899_init_calc(state);
 929         stb0899_diseqc_init(state);
 930
 931         return 0;
 932 }
 933
 934 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val)
 935 {
 936         int res = 0;
 937         int min = 0, med;
 938
 939         if (val < tab[min].read)
 940                 res = tab[min].real;
 941         else if (val >= tab[max].read)
 942                 res = tab[max].real;
 943         else {
 944                 while ((max - min) > 1) {
 945                         med = (max + min) / 2;
 946                         if (val >= tab[min].read && val < tab[med].read)
 947                                 max = med;
 948                         else
 949                                 min = med;
 950                 }
 951                 res = ((val - tab[min].read) *
 952                        (tab[max].real - tab[min].real) /
 953                        (tab[max].read - tab[min].read)) +
 954                         tab[min].real;
 955         }
 956
 957         return res;
 958 }
 959
 960 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 961 {
 962         struct stb0899_state *state             = fe->demodulator_priv;
 963         struct stb0899_internal *internal       = &state->internal;
 964
 965         int val;
 966         u32 reg;
 967         switch (state->delsys) {
 968         case SYS_DVBS:
 969         case SYS_DSS:
 970                 if (internal->lock) {
 971                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
 972                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
 973
 974                                 reg = stb0899_read_reg(state, STB0899_AGCIQIN);
 975                                 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg);
 976
 977                                 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val);
 978                                 *strength += 750;
 979                                 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm",
 980                                         val & 0xff, *strength);
 981                         }
 982                 }
 983                 break;
 984         case SYS_DVBS2:
 985                 if (internal->lock) {
 986                         reg = STB0899_READ_S2REG(STB0899_DEMOD, IF_AGC_GAIN);
 987                         val = STB0899_GETFIELD(IF_AGC_GAIN, reg);
 988
 989                         *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val);
 990                         *strength += 750;
 991                         dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm",
 992                                 val & 0x3fff, *strength);
 993                 }
 994                 break;
 995         default:
 996                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
 997                 return -EINVAL;
 998         }
 999
1000         return 0;
1001 }
1002
1003 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr)
1004 {
1005         struct stb0899_state *state             = fe->demodulator_priv;
1006         struct stb0899_internal *internal       = &state->internal;
1007
1008         unsigned int val, quant, quantn = -1, est, estn = -1;
1009         u8 buf[2];
1010         u32 reg;
1011
1012         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1013         switch (state->delsys) {
1014         case SYS_DVBS:
1015         case SYS_DSS:
1016                 if (internal->lock) {
1017                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1018
1019                                 stb0899_read_regs(state, STB0899_NIRM, buf, 2);
1020                                 val = MAKEWORD16(buf[0], buf[1]);
1021
1022                                 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val);
1023                                 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n",
1024                                         buf[0], buf[1], val, *snr);
1025                         }
1026                 }
1027                 break;
1028         case SYS_DVBS2:
1029                 if (internal->lock) {
1030                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1);
1031                         quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg);
1032                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2);
1033                         est = STB0899_GETFIELD(ESN0_EST, reg);
1034                         if (est == 1)
1035                                 val = 301; /* C/N = 30.1 dB */
1036                         else if (est == 2)
1037                                 val = 270; /* C/N = 27.0 dB */
1038                         else {
1039                                 /* quantn = 100 * log(quant^2) */
1040                                 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100);
1041                                 /* estn = 100 * log(est) */
1042                                 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est);
1043                                 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */
1044                                 val = (quantn - estn) / 10;
1045                         }
1046                         *snr = val;
1047                         dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm",
1048                                 quant, quantn, est, estn, val);
1049                 }
1050                 break;
1051         default:
1052                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1053                 return -EINVAL;
1054         }
1055
1056         return 0;
1057 }
1058
1059 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status)
1060 {
1061         struct stb0899_state *state             = fe->demodulator_priv;
1062         struct stb0899_internal *internal       = &state->internal;
1063         u8 reg;
1064         *status = 0;
1065
1066         switch (state->delsys) {
1067         case SYS_DVBS:
1068         case SYS_DSS:
1069                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS");
1070                 if (internal->lock) {
1071                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1072                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1073                                 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK");
1074                                 *status |= FE_HAS_CARRIER | FE_HAS_LOCK;
1075
1076                                 reg = stb0899_read_reg(state, STB0899_PLPARM);
1077                                 if (STB0899_GETFIELD(VITCURPUN, reg)) {
1078                                         dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC");
1079                                         *status |= FE_HAS_VITERBI | FE_HAS_SYNC;
1080                                         /* post process event */
1081                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1082                                 }
1083                         }
1084                 }
1085                 break;
1086         case SYS_DVBS2:
1087                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2");
1088                 if (internal->lock) {
1089                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2);
1090                         if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) {
1091                                 *status |= FE_HAS_CARRIER;
1092                                 dprintk(state->verbose, FE_DEBUG, 1,
1093                                         "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER");
1094
1095                                 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1);
1096                                 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) {
1097                                         *status |= FE_HAS_LOCK;
1098                                         dprintk(state->verbose, FE_DEBUG, 1,
1099                                                 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK");
1100
1101                                 }
1102                                 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) {
1103                                         *status |= FE_HAS_VITERBI;
1104                                         dprintk(state->verbose, FE_DEBUG, 1,
1105                                                 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI");
1106                                 }
1107                                 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) {
1108                                         *status |= FE_HAS_SYNC;
1109                                         dprintk(state->verbose, FE_DEBUG, 1,
1110                                                 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC");
1111                                         /* post process event */
1112                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1113                                 }
1114                         }
1115                 }
1116                 break;
1117         default:
1118                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1119                 return -EINVAL;
1120         }
1121         return 0;
1122 }
1123
1124 /*
1125  * stb0899_get_error
1126  * viterbi error for DVB-S/DSS
1127  * packet error for DVB-S2
1128  * Bit Error Rate or Packet Error Rate * 10 ^ 7
1129  */
1130 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber)
1131 {
1132         struct stb0899_state *state             = fe->demodulator_priv;
1133         struct stb0899_internal *internal       = &state->internal;
1134
1135         u8  lsb, msb;
1136         u32 i;
1137
1138         *ber = 0;
1139
1140         switch (state->delsys) {
1141         case SYS_DVBS:
1142         case SYS_DSS:
1143                 if (internal->lock) {
1144                         /* average 5 BER values */
1145                         for (i = 0; i < 5; i++) {
1146                                 msleep(100);
1147                                 lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1148                                 msb = stb0899_read_reg(state, STB0899_ECNT1M);
1149                                 *ber += MAKEWORD16(msb, lsb);
1150                         }
1151                         *ber /= 5;
1152                         /* Viterbi Check        */
1153                         if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) {
1154                                 /* Error Rate           */
1155                                 *ber *= 9766;
1156                                 /* ber = ber * 10 ^ 7   */
1157                                 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1158                                 *ber /= 8;
1159                         }
1160                 }
1161                 break;
1162         case SYS_DVBS2:
1163                 if (internal->lock) {
1164                         /* Average 5 PER values */
1165                         for (i = 0; i < 5; i++) {
1166                                 msleep(100);
1167                                 lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1168                                 msb = stb0899_read_reg(state, STB0899_ECNT1M);
1169                                 *ber += MAKEWORD16(msb, lsb);
1170                         }
1171                         /* ber = ber * 10 ^ 7   */
1172                         *ber *= 10000000;
1173                         *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1174                 }
1175                 break;
1176         default:
1177                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1178                 return -EINVAL;
1179         }
1180
1181         return 0;
1182 }
1183
1184 static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
1185 {
1186         struct stb0899_state *state = fe->demodulator_priv;
1187
1188         switch (voltage) {
1189         case SEC_VOLTAGE_13:
1190                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1191                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1192                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00);
1193                 break;
1194         case SEC_VOLTAGE_18:
1195                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02);
1196                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1197                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1198                 break;
1199         case SEC_VOLTAGE_OFF:
1200                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1201                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82);
1202                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1203                 break;
1204         default:
1205                 return -EINVAL;
1206         }
1207
1208         return 0;
1209 }
1210
1211 static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
1212 {
1213         struct stb0899_state *state = fe->demodulator_priv;
1214         struct stb0899_internal *internal = &state->internal;
1215
1216         u8 div, reg;
1217
1218         /* wait for diseqc idle */
1219         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
1220                 return -ETIMEDOUT;
1221
1222         switch (tone) {
1223         case SEC_TONE_ON:
1224                 div = (internal->master_clk / 100) / 5632;
1225                 div = (div + 5) / 10;
1226                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66);
1227                 reg = stb0899_read_reg(state, STB0899_ACRPRESC);
1228                 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03);
1229                 stb0899_write_reg(state, STB0899_ACRPRESC, reg);
1230                 stb0899_write_reg(state, STB0899_ACRDIV1, div);
1231                 break;
1232         case SEC_TONE_OFF:
1233                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20);
1234                 break;
1235         default:
1236                 return -EINVAL;
1237         }
1238         return 0;
1239 }
1240
1241 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
1242 {
1243         int i2c_stat;
1244         struct stb0899_state *state = fe->demodulator_priv;
1245
1246         i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT);
1247         if (i2c_stat < 0)
1248                 goto err;
1249
1250         if (enable) {
1251                 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ...");
1252                 i2c_stat |=  STB0899_I2CTON;
1253                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1254                         goto err;
1255         } else {
1256                 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ...");
1257                 i2c_stat &= ~STB0899_I2CTON;
1258                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1259                         goto err;
1260         }
1261         return 0;
1262 err:
1263         dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed");
1264         return -EREMOTEIO;
1265 }
1266
1267
1268 static inline void CONVERT32(u32 x, char *str)
1269 {
1270         *str++  = (x >> 24) & 0xff;
1271         *str++  = (x >> 16) & 0xff;
1272         *str++  = (x >>  8) & 0xff;
1273         *str++  = (x >>  0) & 0xff;
1274         *str    = '\0';
1275 }
1276
1277 int stb0899_get_dev_id(struct stb0899_state *state)
1278 {
1279         u8 chip_id, release;
1280         u16 id;
1281         u32 demod_ver = 0, fec_ver = 0;
1282         char demod_str[5] = { 0 };
1283         char fec_str[5] = { 0 };
1284
1285         id = stb0899_read_reg(state, STB0899_DEV_ID);
1286         dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id);
1287         chip_id = STB0899_GETFIELD(CHIP_ID, id);
1288         release = STB0899_GETFIELD(CHIP_REL, id);
1289
1290         dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]",
1291                 chip_id, release);
1292
1293         CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str);
1294
1295         demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID);
1296         dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);
1297         CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);
1298         fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);
1299         if (! (chip_id > 0)) {
1300                 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");
1301
1302                 return -ENODEV;
1303         }
1304         dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver);
1305
1306         return 0;
1307 }
1308
1309 static void stb0899_set_delivery(struct stb0899_state *state)
1310 {
1311         u8 reg;
1312         u8 stop_clk[2];
1313
1314         stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1);
1315         stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2);
1316
1317         switch (state->delsys) {
1318         case SYS_DVBS:
1319                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S");
1320                 /* FECM/Viterbi ON      */
1321                 reg = stb0899_read_reg(state, STB0899_FECM);
1322                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1323                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1324                 stb0899_write_reg(state, STB0899_FECM, reg);
1325
1326                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1327                 stb0899_write_reg(state, STB0899_TSULC, 0x40);
1328                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1329                 stb0899_write_reg(state, STB0899_TSLPL, 0x12);
1330
1331                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1332                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1333                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1334
1335                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1336                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1337                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1338
1339                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1340                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1341
1342                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1);
1343                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1344
1345                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1346                 break;
1347         case SYS_DVBS2:
1348                 /* FECM/Viterbi OFF     */
1349                 reg = stb0899_read_reg(state, STB0899_FECM);
1350                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1351                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0);
1352                 stb0899_write_reg(state, STB0899_FECM, reg);
1353
1354                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1355                 stb0899_write_reg(state, STB0899_TSULC, 0x42);
1356                 stb0899_write_reg(state, STB0899_RSLLC, 0x40);
1357                 stb0899_write_reg(state, STB0899_TSLPL, 0x02);
1358
1359                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1360                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0);
1361                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1362
1363                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1364                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0);
1365                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0);
1366
1367                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0);
1368                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0);
1369
1370                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0);
1371                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1372
1373                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0);
1374                 break;
1375         case SYS_DSS:
1376                 /* FECM/Viterbi ON      */
1377                 reg = stb0899_read_reg(state, STB0899_FECM);
1378                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1);
1379                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1380                 stb0899_write_reg(state, STB0899_FECM, reg);
1381
1382                 stb0899_write_reg(state, STB0899_RSULC, 0xa1);
1383                 stb0899_write_reg(state, STB0899_TSULC, 0x61);
1384                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1385
1386                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1387                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1388                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1389
1390                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1391                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1392                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1393
1394                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1395                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1396
1397                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1398
1399                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1400                 break;
1401         default:
1402                 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1403                 break;
1404         }
1405         STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0);
1406         stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2);
1407 }
1408
1409 /*
1410  * stb0899_set_iterations
1411  * set the LDPC iteration scale function
1412  */
1413 static void stb0899_set_iterations(struct stb0899_state *state)
1414 {
1415         struct stb0899_internal *internal = &state->internal;
1416         struct stb0899_config *config = state->config;
1417
1418         s32 iter_scale;
1419         u32 reg;
1420
1421         iter_scale = 17 * (internal->master_clk / 1000);
1422         iter_scale += 410000;
1423         iter_scale /= (internal->srate / 1000000);
1424         iter_scale /= 1000;
1425
1426         if (iter_scale > config->ldpc_max_iter)
1427                 iter_scale = config->ldpc_max_iter;
1428
1429         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, MAX_ITER);
1430         STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
1431         stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
1432 }
1433
1434 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
1435 {
1436         struct stb0899_state *state = fe->demodulator_priv;
1437         struct stb0899_params *i_params = &state->params;
1438         struct stb0899_internal *internal = &state->internal;
1439         struct stb0899_config *config = state->config;
1440         struct dtv_frontend_properties *props = &fe->dtv_property_cache;
1441
1442         u32 SearchRange, gain;
1443
1444         i_params->freq  = p->frequency;
1445         i_params->srate = p->u.qpsk.symbol_rate;
1446         state->delsys = props->delivery_system;
1447         dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys);
1448
1449         SearchRange = 10000000;
1450         dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate);
1451         /* checking Search Range is meaningless for a fixed 3 Mhz                       */
1452         if (INRANGE(i_params->srate, 1000000, 45000000)) {
1453                 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE");
1454                 stb0899_set_delivery(state);
1455
1456                 if (state->config->tuner_set_rfsiggain) {
1457                         if (internal->srate > 15000000)
1458                                 gain =  8; /* 15Mb < srate < 45Mb, gain = 8dB   */
1459                         else if (internal->srate > 5000000)
1460                                 gain = 12; /*  5Mb < srate < 15Mb, gain = 12dB  */
1461                         else
1462                                 gain = 14; /*  1Mb < srate <  5Mb, gain = 14db  */
1463                         state->config->tuner_set_rfsiggain(fe, gain);
1464                 }
1465
1466                 if (i_params->srate <= 5000000)
1467                         stb0899_set_mclk(state, config->lo_clk);
1468                 else
1469                         stb0899_set_mclk(state, config->hi_clk);
1470
1471                 switch (state->delsys) {
1472                 case SYS_DVBS:
1473                 case SYS_DSS:
1474                         dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system");
1475                         internal->freq  = i_params->freq;
1476                         internal->srate = i_params->srate;
1477                         /*
1478                          * search = user search range +
1479                          *          500Khz +
1480                          *          2 * Tuner_step_size +
1481                          *          10% of the symbol rate
1482                          */
1483                         internal->srch_range    = SearchRange + 1500000 + (i_params->srate / 5);
1484                         internal->derot_percent = 30;
1485
1486                         /* What to do for tuners having no bandwidth setup ?    */
1487                         /* enable tuner I/O */
1488                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1489
1490                         if (state->config->tuner_set_bandwidth)
1491                                 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10);
1492                         if (state->config->tuner_get_bandwidth)
1493                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1494
1495                         /* disable tuner I/O */
1496                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1497
1498                         /* Set DVB-S1 AGC               */
1499                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11);
1500
1501                         /* Run the search algorithm     */
1502                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo ..");
1503                         if (stb0899_dvbs_algo(state)    == RANGEOK) {
1504                                 internal->lock          = 1;
1505                                 dprintk(state->verbose, FE_DEBUG, 1,
1506                                         "-------------------------------------> DVB-S LOCK !");
1507
1508 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors     */
1509 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1510 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1511 //                              dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status);
1512 //                              dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl);
1513
1514                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1515                         } else {
1516                                 internal->lock          = 0;
1517
1518                                 return DVBFE_ALGO_SEARCH_FAILED;
1519                         }
1520                         break;
1521                 case SYS_DVBS2:
1522                         internal->freq                  = i_params->freq;
1523                         internal->srate                 = i_params->srate;
1524                         internal->srch_range            = SearchRange;
1525
1526                         /* enable tuner I/O */
1527                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1528
1529                         if (state->config->tuner_set_bandwidth)
1530                                 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange));
1531                         if (state->config->tuner_get_bandwidth)
1532                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1533
1534                         /* disable tuner I/O */
1535                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1536
1537 //                      pParams->SpectralInv            = pSearch->IQ_Inversion;
1538
1539                         /* Set DVB-S2 AGC               */
1540                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c);
1541
1542                         /* Set IterScale =f(MCLK,SYMB)  */
1543                         stb0899_set_iterations(state);
1544
1545                         /* Run the search algorithm     */
1546                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo ..");
1547                         if (stb0899_dvbs2_algo(state)   == DVBS2_FEC_LOCK) {
1548                                 internal->lock          = 1;
1549                                 dprintk(state->verbose, FE_DEBUG, 1,
1550                                         "-------------------------------------> DVB-S2 LOCK !");
1551
1552 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors      */
1553 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1554 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1555
1556                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1557                         } else {
1558                                 internal->lock          = 0;
1559
1560                                 return DVBFE_ALGO_SEARCH_FAILED;
1561                         }
1562                         break;
1563                 default:
1564                         dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1565                         return DVBFE_ALGO_SEARCH_INVALID;
1566                 }
1567         }
1568
1569         return DVBFE_ALGO_SEARCH_ERROR;
1570 }
1571 /*
1572  * stb0899_track
1573  * periodically check the signal level against a specified
1574  * threshold level and perform derotator centering.
1575  * called once we have a lock from a successful search
1576  * event.
1577  *
1578  * Will be called periodically called to maintain the
1579  * lock.
1580  *
1581  * Will be used to get parameters as well as info from
1582  * the decoded baseband header
1583  *
1584  * Once a new lock has established, the internal state
1585  * frequency (internal->freq) is updated
1586  */
1587 static int stb0899_track(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
1588 {
1589         return 0;
1590 }
1591
1592 static int stb0899_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
1593 {
1594         struct stb0899_state *state             = fe->demodulator_priv;
1595         struct stb0899_internal *internal       = &state->internal;
1596
1597         dprintk(state->verbose, FE_DEBUG, 1, "Get params");
1598         p->u.qpsk.symbol_rate = internal->srate;
1599
1600         return 0;
1601 }
1602
1603 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe)
1604 {
1605         return DVBFE_ALGO_CUSTOM;
1606 }
1607
1608 static struct dvb_frontend_ops stb0899_ops = {
1609
1610         .info = {
1611                 .name                   = "STB0899 Multistandard",
1612                 .type                   = FE_QPSK,
1613                 .frequency_min          = 950000,
1614                 .frequency_max          = 2150000,
1615                 .frequency_stepsize     = 0,
1616                 .frequency_tolerance    = 0,
1617                 .symbol_rate_min        =  5000000,
1618                 .symbol_rate_max        = 45000000,
1619
1620                 .caps                   = FE_CAN_INVERSION_AUTO |
1621                                           FE_CAN_FEC_AUTO       |
1622                                           FE_CAN_2G_MODULATION  |
1623                                           FE_CAN_QPSK
1624         },
1625
1626         .release                        = stb0899_release,
1627         .init                           = stb0899_init,
1628         .sleep                          = stb0899_sleep,
1629 //      .wakeup                         = stb0899_wakeup,
1630
1631         .i2c_gate_ctrl                  = stb0899_i2c_gate_ctrl,
1632
1633         .get_frontend_algo              = stb0899_frontend_algo,
1634         .search                         = stb0899_search,
1635         .track                          = stb0899_track,
1636         .get_frontend                   = stb0899_get_frontend,
1637
1638
1639         .read_status                    = stb0899_read_status,
1640         .read_snr                       = stb0899_read_snr,
1641         .read_signal_strength           = stb0899_read_signal_strength,
1642         .read_ber                       = stb0899_read_ber,
1643
1644         .set_voltage                    = stb0899_set_voltage,
1645         .set_tone                       = stb0899_set_tone,
1646
1647         .diseqc_send_master_cmd         = stb0899_send_diseqc_msg,
1648         .diseqc_recv_slave_reply        = stb0899_recv_slave_reply,
1649         .diseqc_send_burst              = stb0899_send_diseqc_burst,
1650 };
1651
1652 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c)
1653 {
1654         struct stb0899_state *state = NULL;
1655         enum stb0899_inversion inversion;
1656
1657         state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);
1658         if (state == NULL)
1659                 goto error;
1660
1661         inversion                               = config->inversion;
1662         state->verbose                          = &verbose;
1663         state->config                           = config;
1664         state->i2c                              = i2c;
1665         state->frontend.ops                     = stb0899_ops;
1666         state->frontend.demodulator_priv        = state;
1667         state->internal.inversion               = inversion;
1668
1669         stb0899_wakeup(&state->frontend);
1670         if (stb0899_get_dev_id(state) == -ENODEV) {
1671                 printk("%s: Exiting .. !\n", __func__);
1672                 goto error;
1673         }
1674
1675         printk("%s: Attaching STB0899 \n", __func__);
1676         return &state->frontend;
1677
1678 error:
1679         kfree(state);
1680         return NULL;
1681 }
1682 EXPORT_SYMBOL(stb0899_attach);
1683 MODULE_PARM_DESC(verbose, "Set Verbosity level");
1684 MODULE_AUTHOR("Manu Abraham");
1685 MODULE_DESCRIPTION("STB0899 Multi-Std frontend");
1686 MODULE_LICENSE("GPL");