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