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         { -750, -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         { -950, 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         u32 reg;
 641
 642         /* Read registers (in burst mode)       */
 643         stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O   */
 644
 645         /* Initial calculations */
 646         master_clk                      = stb0899_get_mclk(state);
 647         internal->t_agc1                = 0;
 648         internal->t_agc2                = 0;
 649         internal->master_clk            = master_clk;
 650         internal->mclk                  = master_clk / 65536L;
 651         internal->rolloff               = stb0899_get_alpha(state);
 652
 653         /* DVBS2 Initial calculations   */
 654         /* Set AGC value to the middle  */
 655         internal->agc_gain              = 8154;
 656         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL);
 657         STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain);
 658         stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg);
 659
 660         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA);
 661         internal->rrc_alpha             = STB0899_GETFIELD(RRC_ALPHA, reg);
 662
 663         internal->center_freq           = 0;
 664         internal->av_frame_coarse       = 10;
 665         internal->av_frame_fine         = 20;
 666         internal->step_size             = 2;
 667 /*
 668         if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO))
 669                 pParams->IQLocked = 0;
 670         else
 671                 pParams->IQLocked = 1;
 672 */
 673 }
 674
 675 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout)
 676 {
 677         u8 reg = 0;
 678         unsigned long start = jiffies;
 679
 680         while (1) {
 681                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
 682                 if (!STB0899_GETFIELD(FIFOFULL, reg))
 683                         break;
 684                 if ((jiffies - start) > timeout) {
 685                         dprintk(state->verbose, FE_ERROR, 1, "timed out !!");
 686                         return -ETIMEDOUT;
 687                 }
 688         }
 689
 690         return 0;
 691 }
 692
 693 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
 694 {
 695         struct stb0899_state *state = fe->demodulator_priv;
 696         u8 reg, i;
 697
 698         if (cmd->msg_len > 8)
 699                 return -EINVAL;
 700
 701         /* enable FIFO precharge        */
 702         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 703         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1);
 704         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 705         for (i = 0; i < cmd->msg_len; i++) {
 706                 /* wait for FIFO empty  */
 707                 if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0)
 708                         return -ETIMEDOUT;
 709
 710                 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]);
 711         }
 712         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 713         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);
 714         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 715         msleep(100);
 716         return 0;
 717 }
 718
 719 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout)
 720 {
 721         u8 reg = 0;
 722         unsigned long start = jiffies;
 723
 724         while (!STB0899_GETFIELD(RXEND, reg)) {
 725                 reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
 726                 if (jiffies - start > timeout) {
 727                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
 728                         return -ETIMEDOUT;
 729                 }
 730                 msleep(10);
 731         }
 732
 733         return 0;
 734 }
 735
 736 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)
 737 {
 738         struct stb0899_state *state = fe->demodulator_priv;
 739         u8 reg, length = 0, i;
 740         int result;
 741
 742         if (stb0899_wait_diseqc_rxidle(state, 100) < 0)
 743                 return -ETIMEDOUT;
 744
 745         reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
 746         if (STB0899_GETFIELD(RXEND, reg)) {
 747
 748                 reg = stb0899_read_reg(state, STB0899_DISRX_ST1);
 749                 length = STB0899_GETFIELD(FIFOBYTENBR, reg);
 750
 751                 if (length > sizeof (reply->msg)) {
 752                         result = -EOVERFLOW;
 753                         goto exit;
 754                 }
 755                 reply->msg_len = length;
 756
 757                 /* extract data */
 758                 for (i = 0; i < length; i++)
 759                         reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO);
 760         }
 761
 762         return 0;
 763 exit:
 764
 765         return result;
 766 }
 767
 768 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout)
 769 {
 770         u8 reg = 0;
 771         unsigned long start = jiffies;
 772
 773         while (!STB0899_GETFIELD(TXIDLE, reg)) {
 774                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
 775                 if (jiffies - start > timeout) {
 776                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
 777                         return -ETIMEDOUT;
 778                 }
 779                 msleep(10);
 780         }
 781         return 0;
 782 }
 783
 784 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst)
 785 {
 786         struct stb0899_state *state = fe->demodulator_priv;
 787         u8 reg, old_state;
 788
 789         /* wait for diseqc idle */
 790         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
 791                 return -ETIMEDOUT;
 792
 793         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 794         old_state = reg;
 795         /* set to burst mode    */
 796         STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03);
 797         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01);
 798         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 799         switch (burst) {
 800         case SEC_MINI_A:
 801                 /* unmodulated  */
 802                 stb0899_write_reg(state, STB0899_DISFIFO, 0x00);
 803                 break;
 804         case SEC_MINI_B:
 805                 /* modulated    */
 806                 stb0899_write_reg(state, STB0899_DISFIFO, 0xff);
 807                 break;
 808         }
 809         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 810         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00);
 811         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 812         /* wait for diseqc idle */
 813         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
 814                 return -ETIMEDOUT;
 815
 816         /* restore state        */
 817         stb0899_write_reg(state, STB0899_DISCNTRL1, old_state);
 818
 819         return 0;
 820 }
 821
 822 static int stb0899_diseqc_init(struct stb0899_state *state)
 823 {
 824 /*
 825         struct dvb_diseqc_slave_reply rx_data;
 826 */
 827         u8 f22_tx, reg;
 828
 829         u32 mclk, tx_freq = 22000;/* count = 0, i; */
 830         reg = stb0899_read_reg(state, STB0899_DISCNTRL2);
 831         STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0);
 832         stb0899_write_reg(state, STB0899_DISCNTRL2, reg);
 833
 834         /* disable Tx spy       */
 835         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 836         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1);
 837         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 838
 839         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 840         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0);
 841         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 842
 843         mclk = stb0899_get_mclk(state);
 844         f22_tx = mclk / (tx_freq * 32);
 845         stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq     */
 846         state->rx_freq = 20000;
 847
 848         return 0;
 849 }
 850
 851 static int stb0899_sleep(struct dvb_frontend *fe)
 852 {
 853         struct stb0899_state *state = fe->demodulator_priv;
 854 /*
 855         u8 reg;
 856 */
 857         dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))");
 858         /* post process event */
 859         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
 860
 861         return 0;
 862 }
 863
 864 static int stb0899_wakeup(struct dvb_frontend *fe)
 865 {
 866         int rc;
 867         struct stb0899_state *state = fe->demodulator_priv;
 868
 869         if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI)))
 870                 return rc;
 871         /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */
 872         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00)))
 873                 return rc;
 874         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00)))
 875                 return rc;
 876
 877         /* post process event */
 878         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1);
 879
 880         return 0;
 881 }
 882
 883 static int stb0899_init(struct dvb_frontend *fe)
 884 {
 885         int i;
 886         struct stb0899_state *state = fe->demodulator_priv;
 887         struct stb0899_config *config = state->config;
 888
 889         dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... ");
 890
 891         /* init device          */
 892         dprintk(state->verbose, FE_DEBUG, 1, "init device");
 893         for (i = 0; config->init_dev[i].address != 0xffff; i++)
 894                 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data);
 895
 896         dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod");
 897         /* init S2 demod        */
 898         for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++)
 899                 stb0899_write_s2reg(state, STB0899_S2DEMOD,
 900                                     config->init_s2_demod[i].base_address,
 901                                     config->init_s2_demod[i].offset,
 902                                     config->init_s2_demod[i].data);
 903
 904         dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod");
 905         /* init S1 demod        */
 906         for (i = 0; config->init_s1_demod[i].address != 0xffff; i++)
 907                 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data);
 908
 909         dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC");
 910         /* init S2 fec          */
 911         for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++)
 912                 stb0899_write_s2reg(state, STB0899_S2FEC,
 913                                     config->init_s2_fec[i].base_address,
 914                                     config->init_s2_fec[i].offset,
 915                                     config->init_s2_fec[i].data);
 916
 917         dprintk(state->verbose, FE_DEBUG, 1, "init TST");
 918         /* init test            */
 919         for (i = 0; config->init_tst[i].address != 0xffff; i++)
 920                 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data);
 921
 922         stb0899_init_calc(state);
 923         stb0899_diseqc_init(state);
 924
 925         return 0;
 926 }
 927
 928 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val)
 929 {
 930         int res = 0;
 931         int min = 0, med;
 932
 933         if (val < tab[min].read)
 934                 res = tab[min].real;
 935         else if (val >= tab[max].read)
 936                 res = tab[max].real;
 937         else {
 938                 while ((max - min) > 1) {
 939                         med = (max + min) / 2;
 940                         if (val >= tab[min].read && val < tab[med].read)
 941                                 max = med;
 942                         else
 943                                 min = med;
 944                 }
 945                 res = ((val - tab[min].read) *
 946                        (tab[max].real - tab[min].real) /
 947                        (tab[max].read - tab[min].read)) +
 948                         tab[min].real;
 949         }
 950
 951         return res;
 952 }
 953
 954 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 955 {
 956         struct stb0899_state *state             = fe->demodulator_priv;
 957         struct stb0899_internal *internal       = &state->internal;
 958
 959         int val;
 960         u32 reg;
 961         *strength = 0;
 962         switch (state->delsys) {
 963         case SYS_DVBS:
 964         case SYS_DSS:
 965                 if (internal->lock) {
 966                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
 967                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
 968
 969                                 reg = stb0899_read_reg(state, STB0899_AGCIQIN);
 970                                 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg);
 971
 972                                 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val);
 973                                 *strength += 750;
 974                                 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm",
 975                                         val & 0xff, *strength);
 976                         }
 977                 }
 978                 break;
 979         case SYS_DVBS2:
 980                 if (internal->lock) {
 981                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN);
 982                         val = STB0899_GETFIELD(IF_AGC_GAIN, reg);
 983
 984                         *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val);
 985                         *strength += 950;
 986                         dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm",
 987                                 val & 0x3fff, *strength);
 988                 }
 989                 break;
 990         default:
 991                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
 992                 return -EINVAL;
 993         }
 994
 995         return 0;
 996 }
 997
 998 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr)
 999 {
1000         struct stb0899_state *state             = fe->demodulator_priv;
1001         struct stb0899_internal *internal       = &state->internal;
1002
1003         unsigned int val, quant, quantn = -1, est, estn = -1;
1004         u8 buf[2];
1005         u32 reg;
1006
1007         *snr = 0;
1008         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1009         switch (state->delsys) {
1010         case SYS_DVBS:
1011         case SYS_DSS:
1012                 if (internal->lock) {
1013                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1014
1015                                 stb0899_read_regs(state, STB0899_NIRM, buf, 2);
1016                                 val = MAKEWORD16(buf[0], buf[1]);
1017
1018                                 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val);
1019                                 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n",
1020                                         buf[0], buf[1], val, *snr);
1021                         }
1022                 }
1023                 break;
1024         case SYS_DVBS2:
1025                 if (internal->lock) {
1026                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1);
1027                         quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg);
1028                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2);
1029                         est = STB0899_GETFIELD(ESN0_EST, reg);
1030                         if (est == 1)
1031                                 val = 301; /* C/N = 30.1 dB */
1032                         else if (est == 2)
1033                                 val = 270; /* C/N = 27.0 dB */
1034                         else {
1035                                 /* quantn = 100 * log(quant^2) */
1036                                 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100);
1037                                 /* estn = 100 * log(est) */
1038                                 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est);
1039                                 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */
1040                                 val = (quantn - estn) / 10;
1041                         }
1042                         *snr = val;
1043                         dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm",
1044                                 quant, quantn, est, estn, val);
1045                 }
1046                 break;
1047         default:
1048                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1049                 return -EINVAL;
1050         }
1051
1052         return 0;
1053 }
1054
1055 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status)
1056 {
1057         struct stb0899_state *state             = fe->demodulator_priv;
1058         struct stb0899_internal *internal       = &state->internal;
1059         u8 reg;
1060         *status = 0;
1061
1062         switch (state->delsys) {
1063         case SYS_DVBS:
1064         case SYS_DSS:
1065                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS");
1066                 if (internal->lock) {
1067                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1068                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1069                                 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK");
1070                                 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
1071
1072                                 reg = stb0899_read_reg(state, STB0899_PLPARM);
1073                                 if (STB0899_GETFIELD(VITCURPUN, reg)) {
1074                                         dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC");
1075                                         *status |= FE_HAS_VITERBI | FE_HAS_SYNC;
1076                                         /* post process event */
1077                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1078                                 }
1079                         }
1080                 }
1081                 break;
1082         case SYS_DVBS2:
1083                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2");
1084                 if (internal->lock) {
1085                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2);
1086                         if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) {
1087                                 *status |= FE_HAS_CARRIER;
1088                                 dprintk(state->verbose, FE_DEBUG, 1,
1089                                         "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER");
1090
1091                                 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1);
1092                                 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) {
1093                                         *status |= FE_HAS_LOCK;
1094                                         dprintk(state->verbose, FE_DEBUG, 1,
1095                                                 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK");
1096
1097                                 }
1098                                 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) {
1099                                         *status |= FE_HAS_VITERBI;
1100                                         dprintk(state->verbose, FE_DEBUG, 1,
1101                                                 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI");
1102                                 }
1103                                 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) {
1104                                         *status |= FE_HAS_SYNC;
1105                                         dprintk(state->verbose, FE_DEBUG, 1,
1106                                                 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC");
1107                                         /* post process event */
1108                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1109                                 }
1110                         }
1111                 }
1112                 break;
1113         default:
1114                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1115                 return -EINVAL;
1116         }
1117         return 0;
1118 }
1119
1120 /*
1121  * stb0899_get_error
1122  * viterbi error for DVB-S/DSS
1123  * packet error for DVB-S2
1124  * Bit Error Rate or Packet Error Rate * 10 ^ 7
1125  */
1126 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber)
1127 {
1128         struct stb0899_state *state             = fe->demodulator_priv;
1129         struct stb0899_internal *internal       = &state->internal;
1130
1131         u8  lsb, msb;
1132         u32 i;
1133
1134         *ber = 0;
1135
1136         switch (state->delsys) {
1137         case SYS_DVBS:
1138         case SYS_DSS:
1139                 if (internal->lock) {
1140                         /* average 5 BER values */
1141                         for (i = 0; i < 5; i++) {
1142                                 msleep(100);
1143                                 lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1144                                 msb = stb0899_read_reg(state, STB0899_ECNT1M);
1145                                 *ber += MAKEWORD16(msb, lsb);
1146                         }
1147                         *ber /= 5;
1148                         /* Viterbi Check        */
1149                         if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) {
1150                                 /* Error Rate           */
1151                                 *ber *= 9766;
1152                                 /* ber = ber * 10 ^ 7   */
1153                                 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1154                                 *ber /= 8;
1155                         }
1156                 }
1157                 break;
1158         case SYS_DVBS2:
1159                 if (internal->lock) {
1160                         /* Average 5 PER values */
1161                         for (i = 0; i < 5; i++) {
1162                                 msleep(100);
1163                                 lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1164                                 msb = stb0899_read_reg(state, STB0899_ECNT1M);
1165                                 *ber += MAKEWORD16(msb, lsb);
1166                         }
1167                         /* ber = ber * 10 ^ 7   */
1168                         *ber *= 10000000;
1169                         *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1170                 }
1171                 break;
1172         default:
1173                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1174                 return -EINVAL;
1175         }
1176
1177         return 0;
1178 }
1179
1180 static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
1181 {
1182         struct stb0899_state *state = fe->demodulator_priv;
1183
1184         switch (voltage) {
1185         case SEC_VOLTAGE_13:
1186                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1187                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1188                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00);
1189                 break;
1190         case SEC_VOLTAGE_18:
1191                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02);
1192                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1193                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1194                 break;
1195         case SEC_VOLTAGE_OFF:
1196                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1197                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82);
1198                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1199                 break;
1200         default:
1201                 return -EINVAL;
1202         }
1203
1204         return 0;
1205 }
1206
1207 static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
1208 {
1209         struct stb0899_state *state = fe->demodulator_priv;
1210         struct stb0899_internal *internal = &state->internal;
1211
1212         u8 div, reg;
1213
1214         /* wait for diseqc idle */
1215         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
1216                 return -ETIMEDOUT;
1217
1218         switch (tone) {
1219         case SEC_TONE_ON:
1220                 div = (internal->master_clk / 100) / 5632;
1221                 div = (div + 5) / 10;
1222                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66);
1223                 reg = stb0899_read_reg(state, STB0899_ACRPRESC);
1224                 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03);
1225                 stb0899_write_reg(state, STB0899_ACRPRESC, reg);
1226                 stb0899_write_reg(state, STB0899_ACRDIV1, div);
1227                 break;
1228         case SEC_TONE_OFF:
1229                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20);
1230                 break;
1231         default:
1232                 return -EINVAL;
1233         }
1234         return 0;
1235 }
1236
1237 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
1238 {
1239         int i2c_stat;
1240         struct stb0899_state *state = fe->demodulator_priv;
1241
1242         i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT);
1243         if (i2c_stat < 0)
1244                 goto err;
1245
1246         if (enable) {
1247                 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ...");
1248                 i2c_stat |=  STB0899_I2CTON;
1249                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1250                         goto err;
1251         } else {
1252                 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ...");
1253                 i2c_stat &= ~STB0899_I2CTON;
1254                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1255                         goto err;
1256         }
1257         return 0;
1258 err:
1259         dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed");
1260         return -EREMOTEIO;
1261 }
1262
1263
1264 static inline void CONVERT32(u32 x, char *str)
1265 {
1266         *str++  = (x >> 24) & 0xff;
1267         *str++  = (x >> 16) & 0xff;
1268         *str++  = (x >>  8) & 0xff;
1269         *str++  = (x >>  0) & 0xff;
1270         *str    = '\0';
1271 }
1272
1273 int stb0899_get_dev_id(struct stb0899_state *state)
1274 {
1275         u8 chip_id, release;
1276         u16 id;
1277         u32 demod_ver = 0, fec_ver = 0;
1278         char demod_str[5] = { 0 };
1279         char fec_str[5] = { 0 };
1280
1281         id = stb0899_read_reg(state, STB0899_DEV_ID);
1282         dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id);
1283         chip_id = STB0899_GETFIELD(CHIP_ID, id);
1284         release = STB0899_GETFIELD(CHIP_REL, id);
1285
1286         dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]",
1287                 chip_id, release);
1288
1289         CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str);
1290
1291         demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID);
1292         dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);
1293         CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);
1294         fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);
1295         if (! (chip_id > 0)) {
1296                 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");
1297
1298                 return -ENODEV;
1299         }
1300         dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver);
1301
1302         return 0;
1303 }
1304
1305 static void stb0899_set_delivery(struct stb0899_state *state)
1306 {
1307         u8 reg;
1308         u8 stop_clk[2];
1309
1310         stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1);
1311         stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2);
1312
1313         switch (state->delsys) {
1314         case SYS_DVBS:
1315                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S");
1316                 /* FECM/Viterbi ON      */
1317                 reg = stb0899_read_reg(state, STB0899_FECM);
1318                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1319                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1320                 stb0899_write_reg(state, STB0899_FECM, reg);
1321
1322                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1323                 stb0899_write_reg(state, STB0899_TSULC, 0x40);
1324                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1325                 stb0899_write_reg(state, STB0899_TSLPL, 0x12);
1326
1327                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1328                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1329                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1330
1331                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1332                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1333                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1334
1335                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1336                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1337
1338                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1);
1339                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1340
1341                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1342                 break;
1343         case SYS_DVBS2:
1344                 /* FECM/Viterbi OFF     */
1345                 reg = stb0899_read_reg(state, STB0899_FECM);
1346                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1347                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0);
1348                 stb0899_write_reg(state, STB0899_FECM, reg);
1349
1350                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1351                 stb0899_write_reg(state, STB0899_TSULC, 0x42);
1352                 stb0899_write_reg(state, STB0899_RSLLC, 0x40);
1353                 stb0899_write_reg(state, STB0899_TSLPL, 0x02);
1354
1355                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1356                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0);
1357                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1358
1359                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1360                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0);
1361                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0);
1362
1363                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0);
1364                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0);
1365
1366                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0);
1367                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1368
1369                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0);
1370                 break;
1371         case SYS_DSS:
1372                 /* FECM/Viterbi ON      */
1373                 reg = stb0899_read_reg(state, STB0899_FECM);
1374                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1);
1375                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1376                 stb0899_write_reg(state, STB0899_FECM, reg);
1377
1378                 stb0899_write_reg(state, STB0899_RSULC, 0xa1);
1379                 stb0899_write_reg(state, STB0899_TSULC, 0x61);
1380                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1381
1382                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1383                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1384                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1385
1386                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1387                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1388                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1389
1390                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1391                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1392
1393                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1394
1395                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1396                 break;
1397         default:
1398                 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1399                 break;
1400         }
1401         STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0);
1402         stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2);
1403 }
1404
1405 /*
1406  * stb0899_set_iterations
1407  * set the LDPC iteration scale function
1408  */
1409 static void stb0899_set_iterations(struct stb0899_state *state)
1410 {
1411         struct stb0899_internal *internal = &state->internal;
1412         struct stb0899_config *config = state->config;
1413
1414         s32 iter_scale;
1415         u32 reg;
1416
1417         iter_scale = 17 * (internal->master_clk / 1000);
1418         iter_scale += 410000;
1419         iter_scale /= (internal->srate / 1000000);
1420         iter_scale /= 1000;
1421
1422         if (iter_scale > config->ldpc_max_iter)
1423                 iter_scale = config->ldpc_max_iter;
1424
1425         reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER);
1426         STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
1427         stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
1428 }
1429
1430 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe)
1431 {
1432         struct stb0899_state *state = fe->demodulator_priv;
1433         struct stb0899_params *i_params = &state->params;
1434         struct stb0899_internal *internal = &state->internal;
1435         struct stb0899_config *config = state->config;
1436         struct dtv_frontend_properties *props = &fe->dtv_property_cache;
1437
1438         u32 SearchRange, gain;
1439
1440         i_params->freq  = props->frequency;
1441         i_params->srate = props->symbol_rate;
1442         state->delsys = props->delivery_system;
1443         dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys);
1444
1445         SearchRange = 10000000;
1446         dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate);
1447         /* checking Search Range is meaningless for a fixed 3 Mhz                       */
1448         if (INRANGE(i_params->srate, 1000000, 45000000)) {
1449                 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE");
1450                 stb0899_set_delivery(state);
1451
1452                 if (state->config->tuner_set_rfsiggain) {
1453                         if (internal->srate > 15000000)
1454                                 gain =  8; /* 15Mb < srate < 45Mb, gain = 8dB   */
1455                         else if (internal->srate > 5000000)
1456                                 gain = 12; /*  5Mb < srate < 15Mb, gain = 12dB  */
1457                         else
1458                                 gain = 14; /*  1Mb < srate <  5Mb, gain = 14db  */
1459                         state->config->tuner_set_rfsiggain(fe, gain);
1460                 }
1461
1462                 if (i_params->srate <= 5000000)
1463                         stb0899_set_mclk(state, config->lo_clk);
1464                 else
1465                         stb0899_set_mclk(state, config->hi_clk);
1466
1467                 switch (state->delsys) {
1468                 case SYS_DVBS:
1469                 case SYS_DSS:
1470                         dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system");
1471                         internal->freq  = i_params->freq;
1472                         internal->srate = i_params->srate;
1473                         /*
1474                          * search = user search range +
1475                          *          500Khz +
1476                          *          2 * Tuner_step_size +
1477                          *          10% of the symbol rate
1478                          */
1479                         internal->srch_range    = SearchRange + 1500000 + (i_params->srate / 5);
1480                         internal->derot_percent = 30;
1481
1482                         /* What to do for tuners having no bandwidth setup ?    */
1483                         /* enable tuner I/O */
1484                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1485
1486                         if (state->config->tuner_set_bandwidth)
1487                                 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10);
1488                         if (state->config->tuner_get_bandwidth)
1489                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1490
1491                         /* disable tuner I/O */
1492                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1493
1494                         /* Set DVB-S1 AGC               */
1495                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11);
1496
1497                         /* Run the search algorithm     */
1498                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo ..");
1499                         if (stb0899_dvbs_algo(state)    == RANGEOK) {
1500                                 internal->lock          = 1;
1501                                 dprintk(state->verbose, FE_DEBUG, 1,
1502                                         "-------------------------------------> DVB-S LOCK !");
1503
1504 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors     */
1505 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1506 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1507 //                              dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status);
1508 //                              dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl);
1509
1510                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1511                         } else {
1512                                 internal->lock          = 0;
1513
1514                                 return DVBFE_ALGO_SEARCH_FAILED;
1515                         }
1516                         break;
1517                 case SYS_DVBS2:
1518                         internal->freq                  = i_params->freq;
1519                         internal->srate                 = i_params->srate;
1520                         internal->srch_range            = SearchRange;
1521
1522                         /* enable tuner I/O */
1523                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1524
1525                         if (state->config->tuner_set_bandwidth)
1526                                 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange));
1527                         if (state->config->tuner_get_bandwidth)
1528                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1529
1530                         /* disable tuner I/O */
1531                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1532
1533 //                      pParams->SpectralInv            = pSearch->IQ_Inversion;
1534
1535                         /* Set DVB-S2 AGC               */
1536                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c);
1537
1538                         /* Set IterScale =f(MCLK,SYMB)  */
1539                         stb0899_set_iterations(state);
1540
1541                         /* Run the search algorithm     */
1542                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo ..");
1543                         if (stb0899_dvbs2_algo(state)   == DVBS2_FEC_LOCK) {
1544                                 internal->lock          = 1;
1545                                 dprintk(state->verbose, FE_DEBUG, 1,
1546                                         "-------------------------------------> DVB-S2 LOCK !");
1547
1548 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors      */
1549 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1550 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1551
1552                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1553                         } else {
1554                                 internal->lock          = 0;
1555
1556                                 return DVBFE_ALGO_SEARCH_FAILED;
1557                         }
1558                         break;
1559                 default:
1560                         dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1561                         return DVBFE_ALGO_SEARCH_INVALID;
1562                 }
1563         }
1564
1565         return DVBFE_ALGO_SEARCH_ERROR;
1566 }
1567
1568 static int stb0899_get_frontend(struct dvb_frontend *fe)
1569 {
1570         struct dtv_frontend_properties *p = &fe->dtv_property_cache;
1571         struct stb0899_state *state             = fe->demodulator_priv;
1572         struct stb0899_internal *internal       = &state->internal;
1573
1574         dprintk(state->verbose, FE_DEBUG, 1, "Get params");
1575         p->symbol_rate = internal->srate;
1576
1577         return 0;
1578 }
1579
1580 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe)
1581 {
1582         return DVBFE_ALGO_CUSTOM;
1583 }
1584
1585 static struct dvb_frontend_ops stb0899_ops = {
1586         .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS },
1587         .info = {
1588                 .name                   = "STB0899 Multistandard",
1589                 .frequency_min          = 950000,
1590                 .frequency_max          = 2150000,
1591                 .frequency_stepsize     = 0,
1592                 .frequency_tolerance    = 0,
1593                 .symbol_rate_min        =  5000000,
1594                 .symbol_rate_max        = 45000000,
1595
1596                 .caps                   = FE_CAN_INVERSION_AUTO |
1597                                           FE_CAN_FEC_AUTO       |
1598                                           FE_CAN_2G_MODULATION  |
1599                                           FE_CAN_QPSK
1600         },
1601
1602         .release                        = stb0899_release,
1603         .init                           = stb0899_init,
1604         .sleep                          = stb0899_sleep,
1605 //      .wakeup                         = stb0899_wakeup,
1606
1607         .i2c_gate_ctrl                  = stb0899_i2c_gate_ctrl,
1608
1609         .get_frontend_algo              = stb0899_frontend_algo,
1610         .search                         = stb0899_search,
1611         .get_frontend                   = stb0899_get_frontend,
1612
1613
1614         .read_status                    = stb0899_read_status,
1615         .read_snr                       = stb0899_read_snr,
1616         .read_signal_strength           = stb0899_read_signal_strength,
1617         .read_ber                       = stb0899_read_ber,
1618
1619         .set_voltage                    = stb0899_set_voltage,
1620         .set_tone                       = stb0899_set_tone,
1621
1622         .diseqc_send_master_cmd         = stb0899_send_diseqc_msg,
1623         .diseqc_recv_slave_reply        = stb0899_recv_slave_reply,
1624         .diseqc_send_burst              = stb0899_send_diseqc_burst,
1625 };
1626
1627 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c)
1628 {
1629         struct stb0899_state *state = NULL;
1630         enum stb0899_inversion inversion;
1631
1632         state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);
1633         if (state == NULL)
1634                 goto error;
1635
1636         inversion                               = config->inversion;
1637         state->verbose                          = &verbose;
1638         state->config                           = config;
1639         state->i2c                              = i2c;
1640         state->frontend.ops                     = stb0899_ops;
1641         state->frontend.demodulator_priv        = state;
1642         state->internal.inversion               = inversion;
1643
1644         stb0899_wakeup(&state->frontend);
1645         if (stb0899_get_dev_id(state) == -ENODEV) {
1646                 printk("%s: Exiting .. !\n", __func__);
1647                 goto error;
1648         }
1649
1650         printk("%s: Attaching STB0899 \n", __func__);
1651         return &state->frontend;
1652
1653 error:
1654         kfree(state);
1655         return NULL;
1656 }
1657 EXPORT_SYMBOL(stb0899_attach);
1658 MODULE_PARM_DESC(verbose, "Set Verbosity level");
1659 MODULE_AUTHOR("Manu Abraham");
1660 MODULE_DESCRIPTION("STB0899 Multi-Std frontend");
1661 MODULE_LICENSE("GPL");